A sealing structure of a flapper-type reversing valve

Abstract

The utility model relates to powder material conveying technical field especially a sealing structure of baffle type reversing valve, including valve body subassembly, the left and right upper side wall of valve body subassembly all are installed with top sealing strip through a plurality of sealing bolts, the inside wall of front and back of valve body subassembly all are installed with four front and back sealing strips through a plurality of sealing bolts, the outside wall of valve body subassembly is installed with the driving assembly of external connection, and the driving end drive connection of external driving assembly is driven to have the pivot, the outside wall of pivot is installed with two layers of reversing baffle, and the middle fixed mounting of two layers reversing baffle has a layer of sealing gasket. The utility model is through the elastic gasket automatic pressure of reversing baffle closure, and the contact on top sealing strip and front and back sealing strip forms good adhesion, to realize the sealing effect under smaller pressure to the improvement of the previous hard seal's shortcoming.

Description

Technical Field

[0001] This utility model relates to the field of powder material conveying technology, and in particular to a sealing structure of a baffle-type reversing valve. Background Technology

[0002] Currently, most baffle-type directional control valves use a hard seal method where the baffle and the valve body sealing strip are in direct contact, which has the following drawbacks:

[0003] 1. Poor sealing between metals, prone to leakage under high pressure conditions;

[0004] 2. Direct contact with the sealing surface leads to wear and tear after prolonged use, resulting in seal failure.

[0005] 3. High frictional resistance during reversal can easily lead to jamming.

[0006] To solve the above problems, it is necessary to propose a sealing structure specifically for baffle-type directional valves. Utility Model Content

[0007] The purpose of this invention is to address the shortcomings of the existing hard sealing method in baffle-type directional valves, and to propose a sealing structure for baffle-type directional valves.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A sealing structure for a baffle-type directional valve is designed, comprising a valve body assembly, characterized in that...

[0010] Two top sealing strips are installed on the left and right upper side walls of the valve body assembly using several sealing bolts, and four front and rear sealing strips are installed on the front and rear inner side walls of the valve body assembly using several sealing bolts.

[0011] An external drive assembly is mounted on the outer wall of the valve body assembly, and the drive end of the external drive assembly is driven by a rotating shaft.

[0012] Two reversing baffles are installed on the outer side wall of the shaft, and a sealing gasket is fixedly installed between the two reversing baffles.

[0013] Preferably, the sealing gasket is fixedly disposed in the middle of the two reversing baffles, and the length and width of the sealing gasket are both greater than the two reversing baffles.

[0014] Preferably, the two reversing baffles form a soft seal with the top sealing strip and the front and rear sealing strips through sealing gaskets.

[0015] Preferably, the front and rear sealing strips are fixedly installed on the front and rear inner walls of the valve body assembly by a number of sealing bolts, and the front and rear sealing strips form a soft seal with the sealing gasket surface.

[0016] Preferably, the top sealing strip is fixedly installed on the upper inner wall of the valve body assembly by a number of sealing bolts, and the top sealing strip forms a soft seal with the sealing gasket surface.

[0017] Preferably, the four front and rear sealing strips are arranged in two groups of two, with the front and rear strips respectively installed on the front and rear inner walls of the valve body assembly.

[0018] The sealing structure of the baffle-type reversing valve proposed in this utility model has the following advantages: This utility model achieves a soft seal by using sealing gaskets on the reversing baffle to contact the top sealing strip and the front and rear sealing strips respectively. Simultaneously, because the sealing gaskets have a ring structure, they possess good elasticity and flexibility. When the reversing baffle is closed, the elastic gaskets automatically tighten, forming a good fit with the top and front and rear sealing strips, thereby achieving a sealing effect under relatively low pressure, thus overcoming the shortcomings of previous hard seals. Attached Figure Description

[0019] Figure 1 This is a cross-sectional schematic diagram of the sealing structure of a baffle-type directional valve proposed in this utility model.

[0020] Figure 2 This is an enlarged schematic diagram of the surface contact soft seal structure of the sealing structure of the baffle-type reversing valve proposed in this utility model.

[0021] Figure 3 This is a three-dimensional structural diagram of the sealing structure of a baffle-type directional valve proposed in this utility model;

[0022] Figure 4 This is a perspective view of the sealing structure of a baffle-type directional valve proposed in this utility model.

[0023] Figure 5 This is a top view schematic diagram of the sealing structure of the baffle-type directional valve proposed in this utility model.

[0024] In the picture:

[0025] 10. Valve body assembly; 11. Top sealing strip; 12. Front and rear sealing strips;

[0026] 20. Drive assembly; 21. Shaft; 22. Reversing baffle;

[0027] 30. Sealing gasket. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0029] Reference Figure 1-5 A sealing structure for a baffle-type directional control valve, comprising a valve body assembly 10, characterized in that,

[0030] Top sealing strips 11 are installed on the left and right upper side walls of the valve body assembly 10 by a number of sealing bolts, and four front and rear sealing strips 12 are installed on the front and rear inner side walls of the valve body assembly 10 by a number of sealing bolts.

[0031] An external drive assembly 20 is mounted on the outer side wall of the valve body assembly 10, and the drive end of the external drive assembly 20 is driven by a rotating shaft 21.

[0032] Two reversing baffles 22 are installed on the outer side wall of the rotating shaft 21, and a sealing gasket 30 is fixedly installed between the two reversing baffles 22.

[0033] As an optimized solution of this embodiment, the sealing gasket 30 is fixedly disposed in the middle of the two reversing baffles 22, and the length and width of the sealing gasket 30 are both greater than the two reversing baffles 22.

[0034] As an optimized solution in this embodiment, the two layers of reversing baffles 22 form a surface contact soft seal with the top sealing strip 11 and the front and rear sealing strips 12 through the sealing gaskets 30.

[0035] As an optimized solution of this embodiment, the front and rear sealing strips 12 are fixedly installed on the front and rear inner walls of the valve body assembly 10 by a number of sealing bolts, and the front and rear sealing strips 12 and the sealing gasket 30 form a soft seal in contact.

[0036] As an optimized solution of this embodiment, the top sealing strip 11 is fixedly installed on the upper inner side wall of the valve body assembly 10 by a number of sealing bolts, and the top sealing strip 11 and the sealing gasket 30 form a soft seal.

[0037] As an optimized solution of this embodiment, the four front and rear sealing strips 12 are arranged in two groups of two, and the two groups are respectively installed on the front and rear inner sidewalls of the valve body assembly 10.

[0038] As an optimized solution in this embodiment, the present invention achieves a soft seal by providing a sealing gasket 30 on the reversing baffle 22 that contacts the top sealing strip 11 and the front and rear sealing strips 12 respectively. Simultaneously, due to the good elasticity and flexibility of the sealing gasket 30, the elastic gasket 30 automatically tightens when the reversing baffle 22 is closed, forming a good fit with the top sealing strip 11 and the front and rear sealing strips 12, thereby achieving a sealing effect under relatively low pressure.

[0039] The overall workflow of this utility model is as follows:

[0040] First, a sealing gasket 30 is installed between the two reversing baffles 22, and the length and width of the sealing gasket 30 are both greater than those of the reversing baffles 22. Two top sealing strips 11 are installed on the left and right inner walls of the valve body assembly 10, and two front and rear sealing strips 12 are installed on the front and rear inner walls of the valve body assembly 10, respectively. The top sealing strips 11 and the front and rear sealing strips 12 are all installed on the valve body assembly 10 using several sealing bolts.

[0041] When the external drive assembly 20 drives the rotating shaft 21 to change the direction of the two reversing baffles 22, the sealing gasket 30 between the two reversing baffles 22 forms a soft seal with the top sealing strip 11 and the front and rear sealing strips 12 on one side, which can improve the shortcomings of the previous hard seal.

[0042] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A sealing structure for a baffle-type directional control valve, comprising a valve body assembly, characterized in that, Two top sealing strips are installed on the left and right upper side walls of the valve body assembly using several sealing bolts, and four front and rear sealing strips are installed on the front and rear inner side walls of the valve body assembly using several sealing bolts. An external drive assembly is mounted on the outer wall of the valve body assembly, and the drive end of the external drive assembly is driven by a rotating shaft. Two reversing baffles are installed on the outer side wall of the shaft, and a sealing gasket is fixedly installed between the two reversing baffles.

2. The sealing structure of the baffle-type directional valve according to claim 1, characterized in that, The sealing gasket is fixedly installed in the middle of the two reversing baffles, and the length and width of the sealing gasket are both greater than the two reversing baffles.

3. The sealing structure of the baffle-type directional valve according to claim 1, characterized in that, The two reversing baffles form a soft seal with the top sealing strip and the front and rear sealing strips through sealing gaskets.

4. The sealing structure of the baffle-type directional valve according to claim 1, characterized in that, The front and rear sealing strips are fixedly installed on the inner walls of the front and rear sides of the valve body assembly by a number of sealing bolts, and the front and rear sealing strips form a soft seal with the sealing gasket surface.

5. The sealing structure of the baffle-type directional valve according to claim 1, characterized in that, The top sealing strip is fixedly installed on the upper inner wall of the valve body assembly by several sealing bolts, and the top sealing strip forms a soft seal with the sealing gasket surface.

6. The sealing structure of the baffle-type directional valve according to claim 1, characterized in that, The four front and rear sealing strips are arranged in two groups of two, with the front and rear strips respectively installed on the front and rear inner walls of the valve body assembly.

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