Johnson screen

Johnson Screen

Johnson screen are made by wrapping wire helically around supports that are resistance welded together. This forms various V-shape slots with narrow opening on the top and wide opening on the bottom. As a result, wedge wire screens offer high flow rate, excellent chemical stability and great corrosion resistance performance.

Whether you need a screen for filtration or separation, it is an excellent choice. With their high quality and reliability, you can rest assured that you’re getting the best possible product for your money.

  • Large flow area
  • Uniform water distribution
  • High mechanical strength
  • Temperature resistance

DEZE is Your Prime Johnson Screen Manufacturer Selection In China.

Our screens are continuously welded by special welding equipment, so you can get the perfect fit for your application. Plus, our screens are highly power efficient, saving you around 20-25% on your energy bill. When it comes to quality and performance, it is the clear choice.

Specifications

Material

galvanized low carton (LCG), stainless steel

Slot size

achieved upon request

Length

up to 6 meters

Note: other specifications available as per request

Johnson screen is the perfect solution for those who are looking for a durable, corrosion-resistant option for their filtering needs. Made with high quality stainless steel wires, this screen is built to last and withstand even the most acidic and alkaline environments. Whether you need to filter recycled caustic soda, hydrochloric acid, or sulfuric acid, this screen can do it all while remaining economically and safely in operation.

The unique V-shaped openings of the wedge wire allow for small particles to pass through while keeping larger particles out, making it an ideal choice for a variety of applications. Whether you’re looking for a screen for your home filtration system or for industrial use, the screen is the perfect solution.

Johnson wedge wire screen
Johnson screen

Applications

  • Our wedge wire screens are perfect for everything from vibrating screen decks to surface water intake screens.
  • We also offer fish diversion screen panels, hatchery screens, grain drying screens, malt kin or germination floors, and more.
  • And our architectural wedge wire screen is perfect for use in a variety of settings.
  • Plus, our wedge wire grating is perfect for media retention nozzle, rotary drum screen, header and hub laterals, support grid/lauter tun screen, and wedge wire trommel applications.

For the best in wedge wire screening products, trust Johnson Screens.

What is the best material for johnson screen?

johnson type wedge wire screen is made from a variety of materials, each with unique properties for different applications. But the best material for it should depend on the specific requirements of the application, including the type of fluid or material being processed, temperature and pressure conditions, and the desired level of corrosion resistance and durability. Widely used in pulp and paper, food processing, mining and wastewater treatment and other industries.

1.Stainless steel because of its high corrosion resistance and strength, so it is the common material of Johnson wedge mesh. It is also easy to clean and maintain, making it suitable for applications that require frequent cleaning, such as food processing and pharmaceuticals. Stainless steel can be further divided into different grades, each with different corrosion resistance and strength. For example, 316 stainless steel is a high-grade material with excellent resistance to chemical and salt water corrosion.

2.Titanium is another material that is increasingly used in Johnson wedge-shaped mesh screens. It is also light and has a high strength-to-weight ratio, making it suitable for applications requiring high strength and durability. Titanium is particularly useful in desalination, where high salinity can lead to corrosion of other materials.

3.Hashi alloy is a nickel-based alloy with excellent corrosion resistance, especially in high temperature and acidic environments. Monel, on the other hand, is a nickel-copper alloy with excellent corrosion resistance in seawater and acidic environments. Hastelloy and Monel are preferred in extremely high temperatures, acidic or alkaline conditions, and in some applications where abrasive materials are available.

In short, the specific requirements of the application determine the best material for the Johnson wedge screen. Stainless steel is a popular choice because of its high corrosion resistance and ease of maintenance, while titanium is increasingly used in industries that require high corrosion resistance. In high temperature, acid-base environment, Hastelloy and Monel alloys are preferred under extreme conditions.

FAQ

Most frequent questions and answers

A Johnson wedge wire screen is a type of industrial filtering device that uses a series of V-shaped wires to create a continuous slot opening. The screen is typically made of stainless steel and is used in various industries, including water treatment, food processing, and mining.

 

The working principle of a Johnson wedge wire screen is based on the flow of fluids through the screen. The screen is positioned in a filter housing, and the fluid to be filtered is pumped through the screen. As the fluid flows through the screen, the V-shaped wires create a series of narrow slots or openings that allow the fluid to pass through while trapping any solid particles or impurities.

Johnson wedge wire screens are commonly used in industrial applications due to their numerous advantages over other types of screens. Here are some of the benefits:

 

  1. Durability: Johnson wedge wire screens are made of high-quality stainless steel, making them highly durable and resistant to corrosion, erosion, and wear. They can withstand high temperatures and pressures, making them suitable for use in harsh environments.

 

  1. High flow rates: The unique design of Johnson wedge wire screens allows for high flow rates while retaining particles of a specific size. This makes them ideal for applications where a high throughput of fluids is required.

 

  1. Easy to clean: Johnson wedge wire screens are easy to clean, which reduces downtime and maintenance costs. They can be cleaned by backwashing, brushing, or chemical cleaning, depending on the application.

 

  1. Precise filtration:The precise filtration of Johnson wedge wire screens makes them ideal for applications where a specific particle size needs to be retained or removed. They are commonly used in the food and beverage industry, where the quality of the product is essential.

 

  1. Versatility: Johnson wedge wire screens can be customized to meet specific application requirements. They can be manufactured in different sizes, shapes, and configurations, making them suitable for a wide range of industrial applications.

 

  1. Reduced energy consumption: Johnson wedge wire screens have a low pressure drop, which means that they require less energy to operate than other types of screens. This can result in significant energy savings over time.

 

  1. Environmentally friendly: Johnson wedge wire screens are environmentally friendly because they can be recycled, and they do not require any chemicals or additives to operate.

Selecting the right Johnson wedge wire screen for a specific industrial application can be a challenging task, but there are several factors to consider to make an informed decision.

 

* First, consider the material of the wedge wire screen. The material must be compatible with the medium that will pass through it, and it must be able to withstand the operating conditions, including temperature, pressure, and chemical exposure.

 

* Next, consider the slot size and open area of the screen. The slot size should be selected based on the size of the particles or solids that need to be separated, and the open area should be optimized to minimize pressure drop while maintaining efficient separation.

 

* The shape and orientation of the wedge wire should also be considered. The angle and spacing of the wires can affect the flow rate, self-cleaning ability, and strength of the screen.

 

* Finally, consider the manufacturing quality of the screen. A well-manufactured screen will have consistent slot sizes, precise dimensions, and resistance to wear and corrosion.

Some common issues that can arise with Johnson wedge wire screens include clogging, corrosion, scaling, and damage from high pressure or abrasive materials.

 

*Clogging can be addressed by regular cleaning and maintenance, or by using a backwashing system to remove buildup.

 

* Corrosion can be prevented by using materials that are resistant to corrosion and by applying protective coatings.

 

*Scaling can be reduced by adjusting the pH level of the fluid passing through the screen.

* Damage from high pressure or abrasive materials can be addressed by using screens with a higher strength and durability, or by adjusting the pressure or flow rate of the fluid.

 

Regular inspection and maintenance can also help to identify and address any issues before they become major problems.

The following are the steps to take to maintain and clean this type of screen:

 

  1. Regular inspection: Regularly inspect the screen for signs of wear and tear, damage, or clogging.

 

  1. Cleaning: Use a mild detergent and water to clean the screen. Avoid using abrasive cleaners or brushes that can damage the screen.

 

  1. Disinfection: If the screen is used in a medical or food processing facility, disinfect it regularly using appropriate disinfectants.

 

  1. Lubrication: Lubricate the screen’s moving parts, such as the hinges and bearings, to prevent rust and corrosion.

 

  1. Storage: Store the screen in a dry and clean place to prevent rust, corrosion, or damage.

Yes, wedge wire screens can be customized to meet specific industrial requirements. This can significantly impact the performance of the screens as it allows for a more precise fit for the application.

 

Customization can include the size and shape of the screen, the wire size and spacing, the material used, and the support structure. By tailoring the screens to the specific needs of the application, performance can be improved in terms of efficiency, durability, and accuracy. For example, in wastewater treatment, customized wedge wire screens can be designed to remove specific contaminants or to handle varying flow rates.

 

Overall, customization of wedge wire screens can lead to better performance, increased productivity, and cost savings in the long run.

 

Installing a wedge wire screen in an industrial setting involves several steps.

 

* First, the screen should be inspected for any defects or damages to ensure that it is in good condition.

* Then, the screen should be positioned and secured in the designated location, ensuring that it is level and flush with the surrounding equipment.

The screen should be connected to the appropriate piping or filtration system, and any necessary adjustments should be made to ensure proper flow and performance.

 

When installing a wedge wire screen, it is important to take precautions to ensure safety. This includes wearing appropriate personal protective equipment, such as gloves and safety glasses, and following all relevant safety guidelines and procedures.

 

Additionally, it is important to ensure that the screen is properly secured and that all connections are tight to prevent leaks or other hazards. Regular maintenance and inspection of the screen can also help to ensure safe and efficient operation over time.

Wedge wire screens are commonly used in various industries due to their durability, high-quality filtration capabilities, and customizability. Some of the industries that commonly use wedge wire screens include:

 

  1. Water Treatment Industry: Wedge wire screens are used in water treatment plants to filter out impurities and particles from water sources.

 

  1. Food Processing Industry: These screens are used to separate solids and liquids in the food processing industry. They are also used to filter out impurities in beverages and dairy products.

 

  1. Oil and Gas Industry: Wedge wire screens are used in the oil and gas industry to separate wellbore fluids from solids, sand, and other impurities.

 

  1. Mining Industry: These screens are used to filter out impurities and separate minerals from waste materials in the mining industry.

 

  1. Pulp and Paper Industry: Wedge wire screens are used to remove impurities and fibers from pulp and paper products.

 

Some specific applications of wedge wire screens in these industries include water intake screens, vibrating screens for separation, and sieve bend screens for dewatering and sizing.

The cost of Johnson wedge screens can vary depending on the size, material, and application. However, compared to other types of industrial screens, Johnson wedge screens are often considered a premium option and can be more expensive.

 

Despite the higher initial cost, Johnson wedge screens offer several benefits that may make them worth the investment. They have a longer lifespan than other types of screens, reducing the need for frequent replacement and maintenance. They also offer superior filtration and flow rates, resulting in improved efficiency and productivity.

When choosing a supplier for Johnson wedge screens, it is important to consider several factors to ensure quality and reliability.

 

Firstly, look for a supplier with a strong reputation and experience in the industry. They should also have a wide range of wedge screens to choose from, with different sizes and materials available.

 

Additionally, the supplier should have strict quality control standards in place and be able to provide certifications and test reports for their products. It is also important to consider the supplier’s delivery times, pricing, and customer service. To ensure quality and reliability, it is recommended to conduct a site visit to the supplier’s manufacturing facility and check their processes and equipment.

 

Moreover, it is recommended to request samples or conduct product testing before placing a large order.

The maximum operating temperature for a Johnson wedge screen depends on the material it is made of.

 

Typically, stainless steel wedge screens can withstand temperatures up to 800°F (427°C), while other materials like titanium can withstand temperatures up to 1,200°F (649°C). The maximum operating pressure for a Johnson wedge screen also varies depending on the size and material of the screen.

 

Generally, wedge screens can withstand pressure up to 150 psi (10 bar) or more. It is important to consult the manufacturer’s specifications for the specific screen being used to ensure safe and effective operation.

Generally speaking, Johnson wedge screens can be used for filtration of a wide range of materials, including hazardous ones, depending on the material’s size, shape, and chemical properties. It is crucial to consult with a qualified engineer or filtration expert to determine the appropriate screen type and material for a specific application involving hazardous materials.

The lifespan of a stainless steel wedge wire screen varies depending on factors such as the application and maintenance, but generally, it can last for several years.

Compared to other types of industrial screens, such as wire mesh filter and perforated metal screens, stainless steel wedge wire screens have a longer lifespan due to their durable and corrosion-resistant properties. They are also less prone to clogging and can handle high-pressure and high-temperature applications, making them a more cost-effective option in the long run.

It depends on the extent of the damage. Minor damage such as small holes or scratches can be repaired by patching or filling the affected area.

 

However, if the damage is significant, such as large holes or cracks, it may be more cost-effective to replace the entire screen.

 

Additionally, if the screen has become worn over time due to erosion or corrosion, it may also need to be replaced to ensure optimal performance.

The design of a Stainless steel wedge wire screen can impact its performance and efficiency in several ways. The size and shape of the wire profile, the spacing between the wires, and the angle of the wedges can affect the screen’s open area, flow rate, and particle retention capacity. A well-designed screen will have a high open area to allow for maximum flow while retaining the desired particles. It will also have a strong structure to withstand high pressures and prevent clogging. The proper design will ensure maximum efficiency and longevity of the screen.

Johnson wedge wire screens are typically made using stainless steel materials, including 304 and 316 grades. Other materials such as high-temperature alloys or carbon steel may also be used depending on the specific application. The wire used to make the screens is typically round or triangular in cross-section and is welded to support rods to create a strong and durable mesh structure. The screens can be customized to fit a wide range of applications, including water treatment, oil and gas production, and food and beverage processing.

Both “Johnson Wedge Wire Screen” and “Johnson Screen Pipe” are types of industrial screens used for filtration and separation purposes. However, there is a difference in their design and application.

 

Johnson Wedge Wire Screen is a flat panel screen with wedge-shaped openings that allow for high-precision filtration.

 

On the other hand, Johnson Screen Pipe is a tubular screen with perforated holes that are used for well drilling, oil and gas exploration, and water treatment applications.

Johnson wedge wire screen and Johnson screens  are both types of industrial screens used in various applications such as filtration, separation, and sizing. However, there are differences between them.

 

Johnson screens refer to a range of wire-wrapped screens that are made from a variety of materials such as stainless steel, brass, or copper. These screens are manufactured by wrapping wire around a series of support rods to create a cylindrical or flat panel screen.

 

On the other hand, Johnson wedge wire screens are made from V-shaped wire that is welded onto support rods to create a continuous slot screen. The V-shaped wire creates a self-cleaning effect as particles larger than the slot width are caught on the outside while the water and smaller particles pass through the slot.

 

In summary, while both Johnson screens and Johnson wedge wire screens are used for similar applications, their design and manufacturing processes differ significantly.

Johnson screens are widely used in industries such as mining and water treatment due to their unique features and benefits:

 

Features:

  1. High strength and durability: Johnson screens are made of high-quality stainless steel, making them extremely durable and resistant to corrosion.
  2. Precise openings: The precise and uniform slot openings ensure consistent flow rates and prevent clogging.
  3. Customizable: Johnson screens can be customized to meet specific requirements of different industries.
  4. Low maintenance: Due to their durability and resistance to corrosion, Johnson screens require minimal maintenance.

 

Benefits:

  1. Efficient filtration: Johnson screens provide efficient filtration with minimal pressure loss, reducing energy consumption and operating costs.
  2. Long-lasting: Johnson screens have a long lifespan, reducing the need for frequent replacements and maintenance.
  3. Versatile: Johnson screens can be used for a variety of applications, including water treatment, dewatering, and mineral processing.
  4. Environmental-friendly: Johnson screens are made of stainless steel, which is recyclable and environmentally friendly.

When selecting between Johnson wedge wire screen and Johnson screens for a particular application, several factors should be considered.

 

These include the nature of the fluid or gas being processed, the required flow rate, the size of the particles being filtered, and the operating temperature and pressure.

 

Other factors to consider are the required durability and lifespan of the screen, the level of maintenance required, and the installation and maintenance costs.

 

Additionally, the compatibility of the screen material with the process fluid or gas should also be considered. By taking into account these factors, the most appropriate type of screen can be selected for the particular application, ensuring optimal performance and longevity.

To ensure optimal performance of Johnson vee wire screens and Johnson screens, regular maintenance is necessary. Some of the maintenance requirements include:

  1. Regular cleaning of the screens to remove any accumulated debris, sediment or fouling material.

 

  1. Inspecting the screens for any signs of damage, such as cracks, corrosion or wear and tear.

 

  1. Replacing any damaged or worn out screens to prevent any reduction in performance.

 

  1. Lubricating any moving parts to ensure smooth operation and prevent any rust or corrosion.

 

  1. Regularly checking the pressure and flow rate to ensure the screens are operating within their design limits.

 

  1. Monitoring the screens for any signs of clogging or fouling and taking appropriate action to prevent any loss of performance.

 

  1. Keeping records of the maintenance activities performed and scheduling regular inspections and maintenance to ensure long-term performance and reliability.

Johnson wedge wire screens and Johnson intake screens  are both types of industrial screens used in various applications. The primary difference between the two is their purpose and design.

Johnson wedge wire screens are used mainly for filtration and separation processes. They are designed with narrow slots or openings that allow liquids to pass through while retaining solid particles. These screens are often used in wastewater treatment, food and beverage processing, and mining operations.

On the other hand, Johnson intake screens are designed to protect pumps and other equipment from debris and other contaminants in water sources such as rivers, lakes, and oceans. These screens are typically installed on the intake pipes of pumps and are designed with larger openings to allow water to pass through while trapping larger debris such as sticks, leaves, and rocks.

In summary, Johnson wedge wire screens are used for filtration and separation, while Johnson intake screens are used for protecting equipment from debris in water sources.

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