Air-tight seal type lift valve structure

Abstract

The utility model discloses an air-tight seal type lift valve structure which comprises a box body, a connecting air pipe is installed at the bottom of the outer wall of the box body, a butt joint seat is connected to the bottom of the inner wall of the box body and communicated with the connecting air pipe, a valve plate is connected to the butt joint seat, and a positioning structure used for limiting the valve plate is arranged on the butt joint seat. The top of the valve plate is connected with compression springs, and the upper end of each compression spring is connected to the mounting plate. According to the air-tight sealing type lifting valve structure, stored energy is released, the rough surface roller is driven to rotate, the electric telescopic rod is assisted in lifting, the influence of the gravity of the valve plate on the lifting process of the electric telescopic rod is reduced, the service life of the electric telescopic rod is prolonged, in addition, the rough surface rod plays a role in auxiliary positioning in the whole lifting process, and the service life of the electric telescopic rod is prolonged. And the stability and the perpendicularity of parts such as the mounting plate in the descending process are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of lift valve equipment, and particularly relates to a gas-sealed lift valve structure. Background Technique

[0002] A poppet valve, that is, a cylinder lift valve, is sometimes called a cone valve, a mushroom valve, or a mushroom-shaped valve. A poppet valve is a valve used to control fluid flow, and it realizes the up-and-down operation through a cylinder or an electric push rod. During the use of the poppet valve, the tight fit degree between the valve plate and the butt joint is crucial for the sealing performance and service life of the valve.

[0003] In the prior art, during the descending process of the poppet valve, due to the gravity assistance of the valve plate, the descending operation can be carried out more easily. However, during the ascending process, the cylinder needs to overcome the gravity of the valve plate during the retracting process, which poses relatively high requirements on the force and durability of the cylinder. Under the condition of uneven force for a long time, the cylinder may be damaged, affecting its normal use.

[0004] Aiming at the above problems, it is urgent to innovate and design on the basis of the original poppet valve. Content of the Utility Model

[0005] The technical solution of the utility model provides a solution significantly different from the prior art for the technical problem that the solution of the prior art is too single, so as to solve the problems put forward in the above background technique.

[0006] To achieve the above object, the utility model provides the following technical solution: a gas-sealed lift valve structure, including a box body, a connecting air duct is installed at the bottom of the outer wall of the box body, and a butt joint is connected to the bottom of the inner wall of the box body, and the butt joint is communicated with the connecting air duct. A valve plate is connected to the butt joint, and a positioning structure for limiting the valve plate is arranged on the butt joint. A compression spring is connected to the top of the valve plate, and the upper end of each compression spring is connected to a mounting plate. The extending end of an electric telescopic rod is connected to the top of the mounting plate, and the electric telescopic rod is installed on the outer wall of the top of the box body. And a sealing box sleeved on the outer wall of the extending end of the electric telescopic rod is installed inside the top of the box body. A boosting structure for assisting the lifting and descending of the valve plate is symmetrically arranged in the box body with respect to the butt joint.

[0007] Preferably, the positioning structure includes an opening, a positioning block, a return spring, a groove and a trigger block. At least two openings are symmetrically arranged at equal angles on the butt joint, and a positioning block is slidably connected in each opening in a clamping manner. And a return spring is connected between each positioning block and the butt joint. A plurality of grooves are correspondingly arranged on the side of the valve plate with respect to the openings, and a plurality of trigger blocks are correspondingly connected to the bottom of the mounting plate with respect to the positioning blocks.

[0008] Preferably, both sides of the top of the positioning block are set to arc-shaped structures, and the positioning block and the groove are in snap-fit sliding connection.

[0009] Preferably, the inner side of the lower end of the trigger block is set to an arc-shaped structure, and the trigger block and the positioning block are in mutual contact.

[0010] Preferably, the boosting structure includes a rough-surface rod, a box body, a connecting shaft, a rough-surface roller and a scroll spring. At least two rough-surface rods are symmetrically connected in the box body at equal angles with respect to the center line of the docking seat, and a box body is sleeved outside each rough-surface rod. A connecting shaft is provided on each side of the rough-surface rod in each box body, one end of each connecting shaft is rotatably connected to the box body, and a scroll spring is provided between the other end of each connecting shaft and the box body. A rough-surface roller for fitting the rough-surface rod is installed on the outer wall of each connecting shaft.

[0011] Preferably, the part of the outer wall of the rough-surface rod in contact with the rough-surface roller is set to be rough-surfaced, and the outer layer of the rough-surface roller is made of rough-surface rubber material.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows: In this airtight lift valve structure, through the setting and mutual cooperation of the docking seat, the valve plate, the positioning structure and the boosting structure, during the downward closing stroke of the valve, energy is stored through the boosting structure. When the valve is in the upward opening stroke, the stored energy is released to drive the rotation of the rough-surface roller to assist the electric telescopic rod in lifting, reducing the influence of the gravity of the valve plate on the lifting process of the electric telescopic rod and extending the service life of the electric telescopic rod. In addition, the rough-surface rod plays an auxiliary positioning role during the entire lifting process, ensuring the stability and verticality of components such as the mounting plate during the downward process.

[0013] In addition, when the valve plate and the docking seat are docked and closed, as the electric telescopic rod continues to push the mounting plate downward, the positioning structure on the docking seat is triggered to snap and limit the valve plate. On the one hand, it plays a positioning effect to ensure the sealed docking of the valve plate and the docking seat. On the other hand, it avoids the gap problem caused by insufficient cylinder pressure, thereby ensuring the sealing performance of the valve and preventing leakage.

[0014] Through these designs, while improving the operation efficiency, this lift valve structure also enhances the durability and safety of the valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front view sectional structure schematic diagram of the valve plate of the present utility model in a state close to the docking seat;

[0016] Figure 2 It is a front view sectional structure schematic diagram of the valve plate of the present utility model in a state far from the docking seat;

[0017] Figure 3 For the present utility modelFigure 1 Schematic diagram of the enlarged structure at A in the middle;

[0018] Figure 4 This is a schematic cross-sectional structure diagram of the box body of the present utility model.

[0019] In the figure: 1, box body; 2, connecting air duct; 3, docking seat; 4, valve plate; 5, positioning structure; 501, opening; 502, positioning block; 503, return spring; 504, groove; 505, trigger block; 6, pressing spring; 7, mounting plate; 8, electric telescopic rod; 9, sealed box; 10, assisting structure; 1001, rough surface rod; 1002, box body; 1003, connecting shaft; 1004, rough surface roller; 1005, scroll spring. Specific implementation manners

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer to Figures 1-4 , the present utility model provides a technical solution: an airtight lifting valve structure, including a box body 1, a connecting air duct 2, a docking seat 3, a valve plate 4, a positioning structure 5, an opening 501, a positioning block 502, a return spring 503, a groove 504, a trigger block 505, a pressing spring 6, a mounting plate 7, an electric telescopic rod 8, a sealed box 9, an assisting structure 10, a rough surface rod 1001, a box body 1002, a connecting shaft 1003, a rough surface roller 1004, and a scroll spring 1005. The connecting air duct 2 is installed at the bottom of the outer wall of the box body 1, and the bottom of the inner wall of the box body 1 is connected with the docking seat 3, and the docking seat 3 is communicated with the connecting air duct 2. The valve plate 4 is connected to the docking seat 3, and a positioning structure 5 for limiting the valve plate 4 is provided on the docking seat 3. The top of the valve plate 4 is connected with a pressing spring 6, and the upper end of each pressing spring 6 is connected to the mounting plate 7. The top of the mounting plate 7 is connected with the extending end of the electric telescopic rod 8, and the electric telescopic rod 8 is installed on the outer wall of the top of the box body 1. And a sealed box 9 sleeved on the outer wall of the extending end of the electric telescopic rod 8 is installed inside the top of the box body 1. The assisting structure 10 for assisting the lifting and lowering of the valve plate 4 is symmetrically arranged in the box body 1 with respect to the docking seat 3.

[0022] The positioning structure 5 includes an opening 501, a positioning block 502, a return spring 503, a groove 504, and a trigger block 505. At least two openings 501 are symmetrically arranged at equal angles on the docking seat 3, and a positioning block 502 is snap-fitted and slidably connected in each opening 501. A return spring 503 is connected between each positioning block 502 and the docking seat 3. A number of grooves 504 are correspondingly opened on the side of the valve plate 4 corresponding to the opening 501, and a number of trigger blocks 505 are correspondingly connected to the bottom of the mounting plate 7 corresponding to the positioning block 502.

[0023] Both sides of the top of the positioning block 502 are set as arc-shaped structures, and the positioning block 502 and the groove 504 are snap-fitted and slidably connected.

[0024] The inner side of the lower end of the trigger block 505 is set as an arc-shaped structure, and the trigger block 505 and the positioning block 502 are mutually attached.

[0025] The boosting structure 10 includes a rough-surface rod 1001, a box body 1002, a connecting shaft 1003, a rough-surface roller 1004, and a scroll spring 1005. At least two rough-surface rods 1001 are symmetrically connected at equal angles about the center line of the docking seat 3 in the box body 1. A box body 1002 is sleeved outside each rough-surface rod 1001. A connecting shaft 1003 is provided on both sides of each rough-surface rod 1001 in each box body 1002. One end of each connecting shaft 1003 is rotatably connected to the box body 1002, and a scroll spring 1005 is provided between the other end of each connecting shaft 1003 and the box body 1002. A rough-surface roller 1004 for fitting the rough-surface rod 1001 is installed on the outer wall of each connecting shaft 1003.

[0026] The contact part between the outer wall of the rough-surface rod 1001 and the rough-surface roller 1004 is set as a rough-surface shape, and the outer layer of the rough-surface roller 1004 is made of rough-surface rubber material.

[0027] Working principle: According to Figure 1 As shown, first, the box body 1 and the connecting air duct 2 are correspondingly installed. When the valve needs to be closed, the electric telescopic rod 8 drives the mounting plate 7 and the valve plate 4 to descend and close with the docking seat 3. During this process, the rough-surface roller 1004 in the box body 1002 contacts the rough-surface rod 1001, driving the rough-surface roller 1004 and the connecting shaft 1003 to rotate forward, triggering the scroll spring 1005 to store energy.

[0028] As the valve plate 4 and the docking seat 3 are closed, the electric telescopic rod 8 continues to push the mounting plate 7 downward, so that the trigger block 505 contacts the positioning block 502, squeezing the positioning block 502 to be snap-fitted with the groove 504 on the valve plate 4, positioning and limiting the valve plate 4.

[0029] When the valve is opened, the electric telescopic rod 8 drives the mounting plate 7 to lift, the trigger block 505 disengages from the limit of the positioning block 502, and the return spring 503 drives the positioning block 502 to reset, thus not affecting the subsequent separation of the valve plate 4 and the docking seat 3. During the lifting process, the scroll spring 1005 is released from restraint, driving the connecting shaft 1003 and the rough surface roller 1004 to reverse, assisting the electric telescopic rod 8 to drive the mounting plate 7 to lift. This is the working principle of the airtight lifting valve structure.

[0030] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gas-sealed lift valve structure, comprising a box body (1), characterized in that: A connecting air duct (2) is installed at the bottom of the outer wall of the box body (1), and a docking seat (3) is connected to the bottom of the inner wall of the box body (1), and the docking seat (3) is communicated with the connecting air duct (2). A valve plate (4) is connected to the docking seat (3), and a positioning structure (5) for limiting the valve plate (4) is arranged on the docking seat (3). A pressing spring (6) is connected to the top of the valve plate (4), and the upper end of each pressing spring (6) is connected to a mounting plate (7). The top of the mounting plate (7) is connected to the extending end of an electric telescopic rod (8), and the electric telescopic rod (8) is installed on the outer wall of the top of the box body (1). And a sealing box (9) sleeved on the outer wall of the extending end of the electric telescopic rod (8) is installed inside the top of the box body (1). Auxiliary structures (10) for assisting the lifting and lowering of the valve plate (4) are symmetrically arranged in the box body (1) with respect to the docking seat (3). The auxiliary structure (10) includes a rough surface rod (1001), a box body (1002), a connecting shaft (1003), a rough surface roller (1004) and a scroll spring (1005). At least two rough surface rods (1001) are symmetrically connected in the box body (1) at equal angles with respect to the center line of the docking seat (3), and a box body (1002) is sleeved outside each rough surface rod (1001). One connecting shaft (1003) is arranged on each side of the rough surface rod (1001) inside each box body (1002), and one end of each connecting shaft (1003) is rotatably connected to the box body (1002), and a scroll spring (1005) is arranged between the other end of each connecting shaft (1003) and the box body (1002). A rough surface roller (1004) for fitting the rough surface rod (1001) is installed on the outer wall of each connecting shaft (1003).

2. The airtight lifting valve structure according to claim 1, characterized in that: The positioning structure (5) includes an opening (501), a positioning block (502), a return spring (503), a groove (504) and a trigger block (505). At least two openings (501) are symmetrically opened at equal angles on the docking seat (3), and a positioning block (502) is snap-fitted and slidably connected in each opening (501), and a return spring (503) is connected between each positioning block (502) and the docking seat (3). A number of grooves (504) are correspondingly opened on the side of the valve plate (4) with respect to the openings (501), and a number of trigger blocks (505) are correspondingly connected to the bottom of the mounting plate (7) with respect to the positioning blocks (502).

3. The airtight lifting valve structure according to claim 2, characterized in that: Both sides of the top of the positioning block (502) are arranged in an arc structure, and the positioning block (502) and the groove (504) are snap-fitted and slidably connected.

4. The airtight lifting valve structure according to claim 2, characterized in that: The inner side of the lower end of the trigger block (505) is arranged in an arc structure, and the trigger block (505) and the positioning block (502) are mutually attached.

5. A gas-tight lifting valve structure according to claim 1, characterized in that: The contact part between the outer wall of the rough surface rod (1001) and the rough surface roller (1004) is arranged in a rough surface shape, and the outer layer of the rough surface roller (1004) is made of rough surface rubber material.

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