Ash lock valve head of crushed coal pressurized gasification furnace

Abstract

The utility model relates to the technical field of crushed coal processing equipment, in particular to an ash lock valve head of a crushed coal pressurized gasification furnace, which comprises a valve body, a valve rod, a buffer component, a sealing component and the valve rod arranged in the valve body, the buffering assembly is arranged at one end of the valve rod and comprises a connecting piece, the connecting piece is arranged at one end of the valve rod, a positioning piece is arranged on the outer side of the connecting piece, and a buffering piece is arranged at the bottom of the positioning piece; the sealing assembly is arranged at the bottom of the valve body; the problems that when an existing partial ash lock is closed, a valve head and a valve seat make contact, long-time collision and friction easily cause damage to the valve head or the valve seat, the service life is affected, meanwhile, ash leakage easily occurs in a gap generated by abrasion of the valve head and the valve seat, and the working efficiency is affected are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of crushed coal processing equipment, in particular to an ash lock valve head for a crushed coal pressurized gasification furnace. Background Art

[0002] Crushed coal pressurized gasification technology is widely used in the coal chemical industry. The crushed coal pressurized gasification device consists of a gasifier, a coal lock and an ash lock. The ash lock is used for ash removal from the gasifier and plays a connecting role with the coal lock, facilitating pressurization and pressure relief cycle operations.

[0003] When the existing partial ash lock is closed, the valve head contacts the valve seat. Long-term collision and friction can easily cause damage to the valve head or valve seat, affecting the service life. At the same time, the gap caused by the wear of the valve head and valve seat is prone to ash leakage, affecting work efficiency. Utility Model Content

[0004] The utility model aims to provide an ash lock valve head for a crushed coal pressurized gasification furnace to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a crushed coal pressurized gasification furnace ash lock valve head, including a valve body, a valve stem, a buffer assembly and a sealing assembly, a valve stem arranged inside the valve body; a buffer assembly arranged at one end of the valve stem, the buffer assembly including a connecting piece, the connecting piece is arranged at one end of the valve stem, a positioning piece is arranged on the outside of the connecting piece, and a buffer piece is arranged at the bottom of the positioning piece; a sealing assembly is arranged at the bottom of the valve body.

[0006] Preferably, the connecting member comprises a valve head body arranged at one end of the valve stem, and a buffer sleeve is arranged on the outer side of the valve head body.

[0007] Preferably, the positioning member includes a valve seat arranged outside the buffer sleeve, and the top of the valve seat is fixedly connected to a positioning shell.

[0008] Preferably, the buffer member comprises a buffer rod fixedly connected to the bottom of the positioning shell, and a spring is arranged on the outer side of the buffer rod.

[0009] Preferably, the sealing assembly includes a fixing member arranged at the bottom of the valve body, and a protective member is arranged inside the valve body.

[0010] Preferably, the fixing member comprises a base arranged at the bottom of the valve body, the top of the base is welded to the spring, and a sealing ring is arranged on the inner side of the base.

[0011] Preferably, the protective member includes a sealing ring arranged on the inner side of the valve seat, and a protective cover arranged on the outer side of the valve seat.

[0012] Preferably, the valve body includes bolts arranged inside, and a sealing sleeve is arranged on the inner side of the valve body.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] The utility model performs preliminary buffering of the contact between the valve head body and the valve seat through the buffer sleeve. When the valve stem drives the valve head body to contact the valve seat and generate impact force, the spring is compressed under the action of the positioning shell and the buffer rod. The impact force is further buffered by the action of the spring elastic force and deformation, which effectively reduces the wear caused by the collision and prolongs the service life. The gap between the valve body and the valve stem is filled by the sealing sleeve. Under the action of the sealing ring, the sealing effect of the valve seat, the buffer sleeve and the valve head body is improved. When the valve stem drives the valve head body to move into the valve seat, the protective cover synchronously moves to the outside of the positioning shell and the inside of the base. The sealing between the protective cover and the base is improved by the sealing ring, so that the protective cover can seal the positioning shell, the valve head body and the valve seat as a whole, effectively preventing ash leakage and ensuring the smooth progress of the crushed coal pressurization work. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A structural schematic diagram of a preferred embodiment of an ash lock valve head of a crushed coal pressurized gasification furnace provided by the utility model;

[0016] Figure 2 A schematic diagram of the structure of the buffer assembly provided by the utility model;

[0017] Figure 3 A schematic diagram of the structure of the base and the sealing ring provided by the utility model;

[0018] Figure 4 This is a schematic structural diagram of the sealing ring and protective cover provided by the utility model.

[0019] In the figure: 1. valve body; 2. valve stem; 3. buffer assembly; 31. connecting piece; 311. valve head body; 312. buffer sleeve; 32. positioning piece; 321. valve seat; 322. positioning shell; 33. buffer piece; 331. buffer rod; 332. spring; 4. sealing assembly; 41. fixing piece; 411. base; 412. sealing ring; 42. protective piece; 421. sealing ring; 422. protective cover; 5. bolt; 6. sealing sleeve. DETAILED DESCRIPTION

[0020] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0021] See also Figure 1-4As shown, a crushed coal pressurized gasification furnace ash lock valve head comprises a valve body 1, a valve stem 2, a buffer assembly 3 and a sealing assembly 4, wherein the valve stem 2 is arranged inside the valve body 1;

[0022] refer to Figure 1 and Figure 2 As shown, a buffer assembly 3 is arranged at one end of the valve stem 2, and the buffer assembly 3 includes a connecting member 31, and the connecting member 31 is arranged at one end of the valve stem 2. A positioning member 32 is arranged on the outer side of the connecting member 31, and a buffer member 33 is arranged at the bottom of the positioning member 32.

[0023] The connecting member 31 includes a valve head body 311 disposed at one end of the valve stem 2 , and a buffer sleeve 312 is disposed on the outer side of the valve head body 311 .

[0024] The positioning member 32 includes a valve seat 321 disposed outside the buffer sleeve 312 , and a positioning shell 322 is fixedly connected to the top of the valve seat 321 .

[0025] The buffer member 33 includes a buffer rod 331 fixedly connected to the bottom of the positioning shell 322 , and a spring 332 is disposed on the outer side of the buffer rod 331 .

[0026] The outer side of the valve head body 311 is protected by the buffer sleeve 312 to effectively avoid friction damage. When the valve stem 2 drives the valve head to move and enters the valve seat 321, the pressure generated causes the positioning shell 322 to press down, and then the spring 332 is compressed under the connection of the buffer rod 331. Under the action of the elastic force and deformation of the spring 332, the impact force is buffered to avoid damage to the valve head body 311 and the valve seat 321 caused by excessive impact force, thereby ensuring the normal operation of the device.

[0027] refer to Figure 3 and Figure 4 As shown, a sealing assembly 4 is arranged at the bottom of the valve body 1.

[0028] The sealing assembly 4 includes a fixing member 41 disposed at the bottom of the valve body 1 , and a protective member 42 is disposed inside the valve body 1 .

[0029] The fixing member 41 includes a base 411 disposed at the bottom of the valve body 1 , the top of the base 411 is welded to the spring 332 , and a sealing ring 412 is disposed on the inner side of the base 411 .

[0030] The protection member 42 includes a sealing ring 421 disposed on the inner side of the valve seat 321 , and a protection cover 422 disposed on the outer side of the valve seat 321 .

[0031] The valve body 1 includes bolts 5 arranged inside, and a sealing sleeve 6 is arranged on the inner side of the valve body 1 .

[0032] The sealing effect between the valve stem 2 and the valve body 1 is improved by the sealing sleeve 6. When the valve stem 2 drives the valve head body 311 to move into the valve seat 321, the sealing ring 421 enhances the tightness between the valve head body 311 and the valve seat 321. The valve stem 2 simultaneously drives the protective cover 422 to move, so that the protective cover 422 is placed on the outer side of the positioning shell 322 and the inner side of the base 411. Under the action of the sealing ring 412, the sealing between the protective cover 422 and the base 411 is enhanced, thereby sealing and protecting the valve head body 311, the valve seat 321 and the positioning shell 322, thereby ensuring the sealing effect and preventing ash leakage.

[0033] Working principle: When in use, the sealing sleeve 6 is placed on the inner side of the valve body 1 to improve the sealing effect between the valve body 1 and the valve stem 2. The protective cover 422 is inserted into the outer side of the valve stem 2 for fixing, and the protective cover 422 is located above the valve head body 311. Under the action of the bolt 5, the base 411 is conveniently fixed to the valve body 1, and under the action of the spring 332 and the positioning shell 322, the base 411 supports the valve seat 321. When the valve stem 2 drives the valve head body 311 to move into the valve seat 321, it is buffered under the action of the buffer sleeve 312. At the same time, under the action of the impact force generated by it, the positioning shell 322, in cooperation with the buffer rod 331, supports the spring 332. 2 is compressed, and the impact force is buffered under the elastic force and deformation of the spring 332, so as to effectively reduce the wear caused by the collision. The sealing performance of the valve seat 321 and the buffer sleeve 312 is improved through the sealing ring 421. When the valve stem 2 drives the valve head body 311 to move, the protective cover 422 is also driven to move. When the valve head body 311 is placed in the valve seat 321, the protective cover 422 moves to the outside of the positioning shell 322 and the inside of the base 411. Under the action of the sealing ring 412, the sealing performance between the protective cover 422 and the base 411 is improved, so as to seal the valve head body 311, the valve seat 321 and the positioning shell 322, so as to promote the smooth progress of the crushed coal pressurization work.

[0034] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A crushed coal pressurized gasification furnace ash lock valve head, comprising a valve body (1), characterized in that: Also includes: A valve stem (2) disposed inside the valve body (1); a buffer assembly (3) arranged at one end of the valve stem (2), the buffer assembly (3) comprising a connecting member (31), the connecting member (31) being arranged at one end of the valve stem (2), a positioning member (32) being arranged on the outer side of the connecting member (31), and a buffer member (33) being arranged at the bottom of the positioning member (32); A sealing component (4) is arranged at the bottom of the valve body (1).

2. The ash lock valve head of a crushed coal pressurized gasification furnace according to claim 1, characterized in that: The connecting member (31) comprises a valve head body (311) arranged at one end of the valve stem (2), and a buffer sleeve (312) is arranged on the outer side of the valve head body (311).

3. The ash lock valve head of a crushed coal pressurized gasification furnace according to claim 1, characterized in that: The positioning member (32) comprises a valve seat (321) arranged outside the buffer sleeve (312), and the top of the valve seat (321) is fixedly connected to a positioning shell (322).

4. The ash lock valve head of a crushed coal pressurized gasification furnace according to claim 1, characterized in that: The buffer member (33) comprises a buffer rod (331) fixedly connected to the bottom of the positioning shell (322), and a spring (332) is arranged on the outer side of the buffer rod (331).

5. The ash lock valve head of a crushed coal pressurized gasification furnace according to claim 1, characterized in that: The sealing assembly (4) comprises a fixing member (41) arranged at the bottom of the valve body (1), and a protective member (42) is arranged inside the valve body (1).

6. The ash lock valve head of a crushed coal pressurized gasification furnace according to claim 5, characterized in that: The fixing member (41) comprises a base (411) arranged at the bottom of the valve body (1), the top of the base (411) is welded to the spring (332), and a sealing ring (412) is arranged on the inner side of the base (411).

7. The ash lock valve head of a crushed coal pressurized gasification furnace according to claim 5, characterized in that: The protective member (42) comprises a sealing ring (421) arranged on the inner side of the valve seat (321), and a protective cover (422) arranged on the outer side of the valve seat (321).

8. The ash lock valve head of a crushed coal pressurized gasification furnace according to claim 1, characterized in that: The valve body (1) comprises a bolt (5) arranged inside, and a sealing sleeve (6) is arranged on the inner side of the valve body (1).

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