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Knife Gate Valves Easy To Install And Dismantle

Sep 05, 2017

1. Overview

Knife Gate Valve also known as knife gate valve, knife-type slurry valve, its headstock is the gate, the movement direction of the gate and the direction of the fluid perpendicular to by cutting the fiber material of the blade-shaped gate to cut off the media, the gate has two sealing surface, the most common mode gate valve two sealing surface forming wedge-shaped, wedge-shaped angle with the valve parameters, usually 50, Wedge-shaped knife gate valve can be made into a whole, called a rigid gate plate, can also be made to produce micro-deformation of the brake board to improve its process, to make up for the sealing surface angle in the processing process of the deviation, this kind of gate is called the Elastic Gate plate. The valve body does not actually exist in the chamber, the brake plate in the side-guide groove, and from the bottom of the lug pressure on the seat, if you need to achieve a higher dielectric tightness, you can choose O-shaped seal valve seat to achieve two-way sealing. The knife gate valve has the small installation space, the work pressure is low, is not easy to accumulate the sundries, the price is low.

When the knife gate is closed, the sealing surface can be sealed only by medium pressure. That is, depending on the pressure of the media to press the sealing surface of the gate to the other side of the valve seat to ensure sealing surface, which is the self seal. Most of the knife-type gate valves are forced sealed, that is, when the valve is closed, it is forced to press the gate to the seat by force To ensure seal surface sealing. These valves should be installed horizontally in piping.

2. Drive mode

Manual, Electric, pneumatic, hydraulic, bevel gear, electro-hydraulic and hydrodynamic and other driving modes. Knife type Gate valve profile: Clear rod, dark pole two kinds. Knife-type Gate valve material: Cast iron, cast steel, carbon steel, stainless steel, fluorine lining. Knife-type Gate valve seals: Hard seal, soft seal, single-sided seal, double-sided sealing, such as a variety of materials sealed.

Ultra-thin knife gate valve with small size, small flow resistance, light weight, easy to install, easy disassembly and other advantages to completely solve the common gate valve, flat gate valve, ball valve, globe valve, regulating valve, butterfly valve and other types of valve flow resistance, heavy weight, installation difficult, covers a large area, such as difficult problems. After the knife gate valve appears, a large number of general-purpose cut-type valves and regulating valves have been replaced. Today, the largest amount of global knife gate valve is the United States and Japan.

3. Scope of Use

1. Mining, iron and steel industry-for coal, residue pulp, etc.

2. Purification device-used for waste water, mud, dirt and water with suspended substance;

3. Paper industry-for any concentration of pulp, water mixtures;

4. Power plant ash--for ash slurry.

4. Structure

(1) Valve body, (2) bracket,

(3) Handwheel: Ductile Iron

(4) Valve Core: Stainless steel

(5) Rubber Gasket

(6) PTFE Orifice Plate

(7) Packing: PTFE sealing RING

(8) Pressure lid: Stainless Steel

(9) Wire rod, (10) Stem Nut: Stainless Steel

(11) Hat: $number

5. Performance

1. For near-remote control, can also be implemented in accordance with the requirements of users remote location display and remote control.

2. Light weight: The main body is made of carbon steel, weight is less than traditional gate valve weight of about 20%-30%, easy installation and maintenance.

3. The use of the valve can improve the transmission pipeline system closure sealing performance, to maximize the elimination of leakage, to improve production efficiency, protect the environment will play a positive role in promoting.

4. Cover the use of high wear-resistant, corrosion-resistant ceramic materials, the use of mosaic technology, high corrosion resistance, good wear resistance, so that the valve life long, cost-effective compared with the ordinary valve 10 times times.

6. Characteristics

One, lifting the gate sealing surface, can scrape off the sealing surface of the adhesive, automatic cleaning debris.

Second, stainless steel brake plate can prevent corrosion caused by the leakage of seals.

Third, hard all gold sealing surface can guarantee the sealing wear-resisting performance and the request.

Four, valve body sealing surface does not have the groove, does not produce accumulates the material, can guarantee opens the nimble.

Five, short structure length, can save raw materials, installation space and effectively support the strength of the pipeline.

Six, scientific seal packing letter design, make the seal safe and effective, durable.

The seven or three-angled bracket saves the raw materials and ensures the required mechanical properties.

Eight, the valve body on the guide block to make the correct movement of the brake plate, four of the extrusion block to ensure effective sealing of the gate.

Nine, the valve body reinforcement design enhances the valve body strength.

Ten, stainless steel stem durability, double head bolts to make opening and closing more quickly.

Xi, can be arbitrary selection of driving mechanism.

12, more than 50 caliber, the use of fully closed structure, more effective to open and prevent leakage.

13, fluorine rubber sealing surface can achieve sealing effect, improve the use of temperature.

14, rubber sealing surface directly vulcanization in the valve body, will not fall off.