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Valve body of multifunctional knife gate valve

A knife gate valve, multi-functional technology, applied in valve details, valve device, valve shell structure and other directions, can solve the problems of cumbersome operation, waste of resources, difficult casting, etc., achieve uniform and straight body cavity, simplify casting process, and reduce production costs Effect

Inactive Publication Date: 2012-07-04
WENZHOU TIELONG VALVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] As the main part of the knife gate valve, the valve body is often formed by casting. In the casting production process of the valve body casting, molds are needed. Usually, a valve body with a valve structure needs an independent mold to make it. If A valve has several structural shapes, so several sets of molds are required, and different industrial and mining needs require valves of different structures to meet, and corresponding valve bodies are also required to meet the requirements, because manufacturers need to cast a wide variety of valve products , and all need one-to-one corresponding molds to meet the casting requirements of the valve body, resulting in a large amount of molds, a large stacking space, difficulties in finding, and difficulties in warehouse management
[0004] The thin structure and narrow body cavity of the knife gate valve make the casting process more difficult, especially for precision casting wax film casting products. The narrow cavity and complex corner shape in the body cavity are easy to block slag and collapse, making it difficult to cast, resulting in product scrapping
At the same time, after completing the casting of one type of valve body, when the next type of valve body is to be manufactured, the original mold must be disassembled, and the required mold must be reinstalled, which increases the valve body casting process, and the operation is cumbersome, resulting in low production efficiency , Not only that, due to the large amount of molds, it also causes a waste of resources and increases the production cost of valve products

Method used

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  • Valve body of multifunctional knife gate valve
  • Valve body of multifunctional knife gate valve
  • Valve body of multifunctional knife gate valve

Examples

Experimental program
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Effect test

Embodiment 2

[0024] see figure 1 and Figure 5 , as an embodiment of the present invention, the one-way sealed knife gate valve includes a multifunctional knife gate valve body 11, a sealing valve seat 21, a wedge valve seat 22, a gate plate 14, a packing 16, a gland 17, and bolts 18, The body cavity 5 of the valve body 11 is provided with a gate plate 14, one side of the gate plate 14 is equipped with a sealing valve seat 21, and the other side is equipped with a wedge valve seat 22, the sealing valve seat 21 realizes the internal sealing of the pipeline, and the wedge valve seat 22 assists The sealing between the gate plate 14 and the sealing valve seat 21 makes the sealing more compact. The stuffing box 2 of the valve body 11 is provided with a packing 16, and the upper end of the stuffing box 2 is provided with a gland 17. By twisting the bolt 18, the gland 17 holds the packing 16 is pressed tightly against the gate plate 14 to realize the upper sealing effect of the knife gate valve....

Embodiment 3

[0026] see figure 1 and Figure 6 , as an embodiment of the present invention, the one-way hard-sealed knife gate valve includes a multifunctional knife gate valve body 11, a gate plate 14, a movable sealing valve seat 15, a packing 16, a gland 17, bolts 18, and wedges 31, The body cavity 5 of the valve body 11 is provided with a gate 14, one side of the gate 14 is equipped with a movable sealing valve seat 15, and the other side is surfacing with upper and lower wedges 31, and the stuffing box 2 of the valve body 11 is provided with a stuffing 16, and the stuffing box 2 The upper end is provided with a gland 17, and by twisting the bolt 18, the gland 17 presses the filler 16 tightly against the gate plate 14 to realize the upper sealing function of the knife gate valve. The operating handwheel drives the valve stem to rotate so that the valve stem nut drives the gate plate to move up and down. When the gate plate is closed, the inclined surface at the bottom of the gate plat...

Embodiment 4

[0028] see figure 1 and Figure 7 , as an embodiment of the present invention, the two-way sealing high temperature resistant knife gate valve includes a multifunctional knife gate valve body 11, gate plate 14, packing 16, gland 17, bolts 18, metal sealing strip 41, metal valve seat 42, Seal ring 44, valve body 11 body cavity 5 is provided with gate plate 14, metal valve seat 42 and metal valve seat 43 are installed on both sides of gate plate 14 to achieve high temperature resistance, valve body 11 seal strip installation groove 6 is equipped with metal seal strip 41. A sealing ring 44 is provided at the bottom of the metal sealing strip 41 to ensure the sealing effect at the bottom of the sealing strip 41. The stuffing box 2 of the valve body 11 is provided with a packing 16, and the upper end of the stuffing box 2 is provided with a gland 17. By twisting the bolt 18, Make the gland 17 press the filler 16 tightly against the gate plate 14 to realize the upper sealing effect...

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PUM

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Abstract

The invention discloses a valve body of a multifunctional knife gate valve, which comprises support connecting seats, a packing box, a flange bolt threaded hole boss, a flange surface, a body cavity, a sealing strip mounting groove and a valve seat mounting base. The valve body is characterized in that the support connecting seats are arranged on two sides of the packing box, the packing box, the body cavity and the flange surface are sequentially connected, the sealing strip mounting groove is disposed on the periphery of the body cavity, the flange bolt threaded hole boss is arranged at the upper end of the flange surface, the valve seat mounting base is disposed at the lower end of the flange surface, and the body cavity is provided with a straight space. The body cavity is uniform and straight, accordingly, the valve body can be separated from a mold easily in a casting process, the appearance of the valve body is smooth and fine, during usage, the valve body and different configured fittings can be combined to form knife gate valves with different structures and functions, the valve is multipurpose, is quick and convenient in operation and has the advantage of multiple functions, production efficiency is improved, and production cost is lowered.

Description

technical field [0001] The invention relates to the technical field of valves, in particular to the field of valve body molds, in particular to a multifunctional knife gate valve body. Background technique [0002] Knife gate valves, also known as knife gate valves and knife-type slurry valves, have a wide range of applications, from coal preparation, gangue discharge, and slag discharge in mining power plants to urban sewage treatment, from general industrial pipelines to food, sanitation, medicine, etc. And other professional piping systems. The knife gate valve occupies a leading position in the market due to its small size, small flow resistance, light weight, easy installation, and easy disassembly. [0003] As the main part of the knife gate valve, the valve body is often formed by casting. In the casting production process of the valve body casting, molds are needed. Usually, a valve body with a valve structure needs an independent mold to make. If A valve has sever...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K27/04F16K41/02
Inventor 余安铭
Owner WENZHOU TIELONG VALVE