Air brake structure for machining

Abstract

The utility model discloses an air brake structure for machining. The air brake structure comprises a brake valve shell. The electric telescopic cylinder is mounted on the gate valve shell; the valve rod is arranged at the output end of the electric telescopic cylinder; the shell is slidably mounted at the lower end of the valve rod. The two gate plates are oppositely arranged and movably installed on the two sides of the shell in the transverse direction. The strip-shaped through holes are oppositely formed in the side wall of the shell; the abutting block is installed in the two strip-shaped through openings in a sliding mode and connected with the bottom of the valve rod. A plurality of springs are arranged and are connected with the propping block; the abutting rollers are oppositely arranged on the side walls, close to each other, of the two gate plates. The utility model relates to the technical field of valves, the abutting block descends to abut against the abutting roller and drive the two gate plates to be far away from each other in the horizontal direction, and in the long-term closing and opening process of the pneumatic gate valve, the two gate plates can be reset when the two gate plates are close to each other. And the problem that the sealing performance of a sealing surface is affected due to abrasion caused by friction between the gate plate and the interior of the valve is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, and specifically relates to an airlock structure for processing. Background Art

[0002] Pneumatic gate valves are valves driven by compressed air. When the gate valve is closed, the sealing surface can be sealed only by the medium pressure, that is, the sealing surface of the gate plate is pressed against the valve seat on the other side by the medium pressure to ensure the sealing of the sealing surface. This is self-sealing. Most gate valves use forced sealing, that is, when the valve is closed, the gate plate is forced to be pressed against the valve seat by external force to ensure the sealing of the sealing surface.

[0003] However, in the prior art, the pneumatic gate valve is prone to wear of the gate plate and the inside of the valve due to friction during long-term closing and opening, thereby affecting the sealing performance of the sealing surface. For this reason, an airlock structure for processing is provided. Utility Model Content

[0004] The utility model aims to provide an airlock structure for processing, so as to solve the problem that the gate plate and the inside of the valve are easily worn due to friction during the long-term closing and opening of the pneumatic gate valve, thereby affecting the sealing performance of the sealing surface.

[0005] To achieve the above purpose, the utility model provides the following technical solution: an airlock structure for processing, comprising:

[0006] Gate valve housing;

[0007] An electric telescopic cylinder, mounted on the gate valve housing;

[0008] A valve stem, which is arranged at the output end of the electric telescopic cylinder and extends into the inner side of the gate valve housing;

[0009] A housing, slidably mounted on the lower end of the valve stem;

[0010] Two gate plates are arranged opposite to each other and are movably installed on both sides of the shell in a transverse direction;

[0011] Two strip-shaped openings are provided and are arranged oppositely on the side walls of the shell;

[0012] An abutment block is slidably mounted in the two strip-shaped openings and connected to the bottom of the valve stem;

[0013] A plurality of springs are provided, evenly distributed at the bottom of the housing, and connected to the abutment block;

[0014] A resisting roller is relatively arranged on the side walls of the two gate plates close to each other and can resist the resisting block;

[0015] The resetting unit is arranged between the abutment block and the gate plate, and is used for resetting the two gate plates when they are close to each other.

[0016] Preferably, a plurality of guide rods are provided on the side wall of the shell and on the upper and lower sides of the strip-shaped opening, and a plurality of guide grooves corresponding to the guide rods are provided on the side wall of the gate plate. The ends of the guide rods extend into the guide grooves and are provided with baffles.

[0017] Preferably, the reset unit comprises a strip groove arranged on the side wall of the gate plate, a triangular reset block which can extend into the strip groove is arranged on the abutment block, and an inclined groove which can be slidably connected to the inclined surface of the triangular reset block is arranged on the top of the strip groove.

[0018] Preferably, the abutment blocks are provided in two groups, and the two groups of abutment blocks are fixedly connected.

[0019] Preferably, the two side contact ends of the contact block are arranged as inclined surfaces and / or arc-shaped surfaces.

[0020] Preferably, a rotating roller is provided on the top of the gate plate.

[0021] Preferably, a sealing ring is provided at the sealing end of the gate plate.

[0022] Preferably, a guide column is provided at the upper end of the gate valve housing, and a guide shaft matched with the guide column is provided on the side wall of the housing.

[0023] Compared with the prior art, the utility model has the following beneficial effects: the utility model is a processing airlock structure. When in use, the electric telescopic cylinder is started to drive the valve stem, shell and gate plate to descend, so that the bottom of the shell contacts the bottom surface of the gate valve shell. In the process of the electric telescopic cylinder driving the valve stem to continue to descend, the contact block is driven to descend and contact the contact roller and drive the two gate plates to move away from each other in the horizontal direction. In the long-term closing and opening process of the pneumatic gate valve, the problem of the sealing surface being affected by the wear of the gate plate and the inside of the valve due to friction is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0025] Figure 2 It is a left sectional structural schematic diagram of the gate valve core of the utility model;

[0026] Figure 3 for Figure 1 Schematic diagram of the local enlarged structure at A.

[0027] In the figure: 1. gate valve housing; 2. electric telescopic cylinder; 3. valve stem; 4. housing; 5. gate plate; 6. strip opening; 7. resistance block; 8. spring; 9. resistance roller; 10. reset unit; 10-1. strip groove; 10-2. triangular reset block; 10-3. inclined groove; 11. guide rod; 12. guide groove; 13. baffle; 14. rotating roller; 15. sealing ring; 16. guide column; 17. guide shaft. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See also Figure 1-3 The utility model provides a technical solution: a processing airlock structure, comprising: a gate valve housing 1; an electric telescopic cylinder 2 installed on the gate valve housing 1; a valve stem 3 is arranged at the output end of the electric telescopic cylinder 2 and extends into the inner side of the gate valve housing 1; a housing 4 is slidably installed at the lower end of the valve stem 3; two gate plates 5 are relatively arranged and movably installed on both sides of the housing 4 in the transverse direction; two strip-shaped openings 6 are arranged and relatively arranged on the side walls of the housing 4; a resistance block 7 is slidably installed in the two strip-shaped openings 6 and connected to the bottom of the valve stem 3; a plurality of springs 8 are arranged, evenly distributed at the bottom of the housing 4, and connected to the resistance block 7; a resistance roller 9 is relatively arranged on the two gate plates 5 are on the side walls close to each other, and can be in contact with the contact block 7; the reset unit 10 is arranged between the contact block 7 and the gate plate 5, and is used for resetting the two gate plates 5 close to each other. When in use, the electric telescopic cylinder 2 is started to drive the valve stem 3, the shell 4 and the gate plate 5 to descend, so that the bottom of the shell 4 is in contact with the bottom surface of the gate valve shell 1. In the process of the electric telescopic cylinder 2 driving the valve stem 3 to continue to descend, the contact block 7 is driven to descend and contact with the contact roller 9 and drive the two gate plates 5 to move away from each other in the horizontal direction. In the long-term closing and opening process of the pneumatic gate valve, the problem of the sealing surface being affected due to wear of the gate plate 5 and the inside of the valve due to friction is avoided.

[0030] Specifically, a plurality of guide rods 11 are relatively provided on the side walls of the shell 4 and located on the upper and lower sides of the strip-shaped opening 6, and a plurality of guide grooves 12 corresponding to the guide rods 11 are provided on the side walls of the gate plate 5. The ends of the guide rods 11 extend into the guide grooves 12 and are provided with baffles 13. By extending the guide rods 11 on the shell 4 into the guide grooves 12 on the gate plate 5, the gate plate 5 shell is able to move laterally, and the shell 4 and the gate plate 5 are laterally movable by setting the baffles 13.

[0031] Specifically, the reset unit 10 includes a strip groove 10-1 arranged on the side wall of the gate plate 5, a triangular reset block 10-2 which can be extended into the strip groove 10-1 is provided on the abutment block 7, and an inclined groove 10-3 which can be slidably connected with the inclined surface of the triangular reset block 10-2 is provided on the top of the strip groove 10-1. When in use, when the electric telescopic cylinder 2 drives the valve stem 3, the shell 4 and the gate plate 5 to rise, when the top of the gate plate 5 contacts the inner wall of the valve, the electric telescopic cylinder 2 drives the valve stem 3 and the shell 4 to continue to rise, so that the triangular reset block 10-2 and the inclined groove 10-3 slide relative to each other, so that the two gate plates 5 are close to each other, thereby realizing the reset of the two gate plates 5.

[0032] Specifically, two groups of resistance blocks 7 are provided, and the two groups of resistance blocks 7 are fixedly connected. The two groups of resistance blocks 7 apply pressure to the upper and lower ends of the gate plate 5 at the same time, thereby ensuring the uniformity of the force applied to the gate plate 5 .

[0033] Specifically, the two side contact ends of the contact block 7 are set as inclined surfaces and / or curved surfaces. When the contact block 7 contacts the contact roller 9, the contact roller 9 moves relatively along the inclined surfaces and / or curved surfaces of the contact block 7, thereby driving the two gate plates 5 away from each other for sealing.

[0034] Specifically, a rotating roller 14 is provided on the top of the gate plate 5 , and when the two gate plates 5 are lifted and lowered for resetting, friction between the top of the gate plate 5 and the inner wall of the valve is avoided, thereby ensuring the service life of the gate plate 5 .

[0035] Specifically, a sealing ring 15 is provided at the sealing end of the gate plate 5 , and the gate plate 5 is in contact and sealed with the inside of the valve through the sealing ring 15 provided on the sealing end, thereby ensuring the sealing of the gate plate 5 .

[0036] Specifically, a guide column 16 is provided at the upper end of the gate valve housing 1. Two guide columns 16 are provided, which are respectively located on both sides of the shell 4. A guide shaft 17 adapted to the guide column 16 is provided on the side wall of the shell 4. The shell 4 slides on the guide column 16 through the guide shafts 17 at both ends, thereby ensuring the stability of the shell 4 during the up and down movement and avoiding the position of the shell 4 from being offset.

[0037] Working principle: During the use of the utility model, the electric telescopic cylinder 2 is started to drive the valve stem 3, the shell 4 and the gate plate 5 to descend, so that the bottom of the shell 4 contacts the bottom surface of the gate valve housing 1. In the process of the electric telescopic cylinder 2 driving the valve stem 3 to continue to descend, the contact block 7 is driven to descend and contact the contact roller 9 and drive the two gate plates 5 to move away from each other in the horizontal direction for sealing.

[0038] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the instructions and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An airlock structure for processing, characterized in that: include: Gate valve housing (1); An electric telescopic cylinder (2) is mounted on the gate valve housing (1); A valve stem (3) is arranged at the output end of the electric telescopic cylinder (2) and extends into the inner side of the gate valve housing (1); A housing (4) slidably mounted on the lower end of the valve stem (3); Two gate plates (5) are arranged opposite to each other and are movably installed on both sides of the housing (4) in a transverse direction; Two strip-shaped openings (6) are provided and are arranged opposite to each other on the side walls of the housing (4); A resistance block (7) is slidably mounted in the two strip-shaped openings (6) and is connected to the bottom of the valve stem (3); A plurality of springs (8) are provided, evenly distributed at the bottom of the housing (4) and connected to the abutment block (7); A resisting roller (9) is arranged on the side walls of the two gate plates (5) which are close to each other and can resist the resisting block (7); The resetting unit (10) is arranged between the abutment block (7) and the gate plate (5) and is used for resetting the two gate plates (5) when they are close to each other.

2. The airlock structure for processing according to claim 1, characterized in that: A plurality of guide rods (11) are arranged on the side wall of the shell (4) and located on the upper and lower sides of the strip-shaped opening (6), and a plurality of guide grooves (12) corresponding to the guide rods (11) are arranged on the side wall of the gate plate (5). The ends of the guide rods (11) extend into the guide grooves (12) and are provided with baffles (13).

3. The airlock structure for processing according to claim 1, characterized in that: The reset unit (10) comprises a strip groove (10-1) arranged on the side wall of the gate plate (5); a triangular reset block (10-2) which can extend into the strip groove (10-1) is arranged on the abutment block (7); and an inclined groove (10-3) which can be slidably connected to the inclined surface of the triangular reset block (10-2) is arranged on the top of the strip groove (10-1).

4. The airlock structure for processing according to claim 1, characterized in that: The abutment blocks (7) are provided in two groups, and the two groups of abutment blocks (7) are fixedly connected.

5. The airlock structure for processing according to claim 1, characterized in that: The two side contact ends of the contact block (7) are arranged as inclined surfaces and / or arcuate surfaces.

6. The airlock structure for processing according to claim 1, characterized in that: A rotating roller (14) is provided on the top of the gate plate (5).

7. The airlock structure for processing according to claim 1, characterized in that: A sealing ring (15) is provided at the sealing end of the gate plate (5).

8. The airlock structure for processing according to claim 1, characterized in that: A guide column (16) is provided at the upper end of the gate valve housing (1), and a guide shaft (17) matched with the guide column (16) is provided on the side wall of the housing (4).

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