High-leakproofness vacuum valve

Abstract

The utility model relates to a vacuum valve, which belongs to the technical field of valves, in particular to a high-tightness vacuum valve, which comprises a pipe body and a valve body fixedly communicated with the top end of the side wall of the pipe body. The air cylinder is fixedly installed on the wall face of the top end of the valve body, and a fixing rod is fixedly installed at the output end of the air cylinder; the sealing assembly is arranged in the pipe body and the valve body, the sealing assembly comprises a moving plate, the moving plate is fixedly installed on the wall face of the bottom end of the fixing rod, and a first connecting rod is fixedly installed on the wall face of the bottom end of the moving plate; the movable plate moves to enable the first connecting rod to drive the second connecting rod to move, the second connecting rod extrudes the baffle to enable the baffle to be close to the annular plate, the left side wall face of the annular plate and the inner side wall of the annular plate are just completely attached to the stepped side wall of the baffle, double sealing is achieved, and the sealing effect is enhanced; the problem that an existing high-leakproofness vacuum valve is poor in sealing effect is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a high-sealing vacuum valve. Background Art

[0002] Valves are pipe accessories used to open and close pipes, control flow direction, and adjust and control the parameters of the conveying medium. In a vacuum system, the components used to seal and keep the vacuum equipment in a vacuum state for a long time and to isolate the interlayer of the equipment from the flow of air are called vacuum valves. Most existing vacuum valves are tightened by screws to seal the inside of the vacuum valve. If left for a long time, they will become loose and cause air leakage.

[0003] The Chinese patent with publication number CN215891343U discloses a vacuum valve, including a vacuum valve body, a pressing component fixedly installed in the inner cavity of the vacuum valve body, a sealing device fixedly installed at the bottom of the pressing component, a concave block fixedly installed at the bottom of the inner cavity of the vacuum valve body, threads are arranged on both sides of the inner cavity of the vacuum valve body, and the pressing component includes a fixed block, and a concave threaded pipe is rotatably installed in the inner cavity of the fixed block. During the use of the vacuum valve, the valve can be easily closed by pressing the protruding block rod downward, thereby reducing the closing time of the valve, thereby reducing the material flowing out of the valve, ensuring the stability of the amount of material transmission, and effectively realizing the rapid sealing of the inside of the valve, avoiding the problem of shaking of the valve after long-term use, thereby improving the practicality of the valve, and at the same time improving the sealing of the valve, preventing the material from continuing to flow out, and increasing the service life of the valve.

[0004] The vacuum valve of the above technical solution can be easily closed by pressing the bump rod downward during use. However, the spring block moves due to the downward movement of the bump rod, and the movement of the spring block drives the outer surface of the rubber block to engage with the inner surface of the concave block. At this time, the rubber block will be squeezed by the bump rod and deformed, resulting in a misfit when sealing the vacuum valve, resulting in a poor sealing effect. Utility Model Content

[0005] In order to solve the above technical problems, the utility model proposes a high-sealing vacuum valve, in which the movable plate moves so that the first connecting rod drives the second connecting rod to move, and the second connecting rod squeezes the baffle so that the baffle is close to the annular plate, and the left side wall of the annular plate and the inner side wall of the annular plate are exactly in full fit with the stepped side wall of the baffle, thereby achieving double sealing and enhancing the sealing effect.

[0006] The technical solution to achieve the purpose of the utility model is: a high-sealing vacuum valve, including a tube body, the top end of the side wall of the tube body is fixedly connected to the valve body, and also includes;

[0007] A cylinder, wherein the cylinder is fixedly mounted on the top wall of the valve body, and a fixing rod is fixedly mounted on the output end of the cylinder, and the fixing rod penetrates the valve body and extends to the inside of the valve body;

[0008] A sealing assembly is arranged inside the tube body and the valve body, and the sealing assembly includes a movable plate, which is fixedly mounted on the bottom end wall of the fixed rod, and the side wall of the movable plate fits with the inner side wall of the valve body, and a first connecting rod is fixedly mounted on the bottom end wall of the movable plate, and a second connecting rod is hingedly connected to the bottom end wall of the first connecting rod, and a baffle is hingedly connected to the other end of the second connecting rod, and the side wall of the baffle fits with the inner side wall of the tube body, and an annular plate is fixedly mounted on the inner side wall of the tube body.

[0009] In some embodiments, a longitudinal section of the baffle is stepped, and the baffle corresponds to the annular plate.

[0010] In some embodiments, two slide grooves are formed on the inner side wall of the tube body, and two sliders are fixedly mounted on the side wall of the baffle, and the two sliders are slidably mounted on the inner side walls of the two slide grooves respectively.

[0011] In some embodiments, a through hole is formed on the top wall of the valve body.

[0012] In some embodiments, a rubber pad is fixedly mounted on the side wall of the movable plate, and a rubber pad is also fixedly mounted on the side wall of the baffle plate close to the annular plate.

[0013] Compared with the prior art, the utility model has the following significant advantages:

[0014] First, in the utility model, the cylinder is started, the cylinder drives the fixed rod to move downward, the movement of the movable plate drives the moving plate to move, the movement of the movable plate causes the first connecting rod to drive the second connecting rod to move, the second connecting rod squeezes the baffle plate, so that the baffle plate is close to the annular plate, when the baffle plate fits the annular plate, the left wall surface of the annular plate and the inner side wall of the annular plate are just completely fitted with the stepped side wall of the baffle plate, double sealing, and enhanced sealing effect; solves the problem of poor sealing effect of existing high-sealing vacuum valves;

[0015] Second, in the utility model, when the second connecting rod drives the baffle to move, the slider always moves along the direction of the slide slot, so that the baffle always moves horizontally, preventing the baffle from being subjected to uneven force, and making the movement of the baffle more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further explained below in conjunction with the accompanying drawings and embodiments:

[0017] Figure 1 This is a schematic diagram of the overall structure of the high-sealing vacuum valve of the utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the utility model high-sealing vacuum valve;

[0019] Figure 3 It is a structural schematic diagram of the high-sealing vacuum valve sealing component of the utility model in a sealed state.

[0020] Description of reference numerals:

[0021] 1. Tube body; 11. Slide groove; 2. Valve body; 3. Cylinder; 31. Fixed rod; 32. Moving plate; 33. First connecting rod; 34. Second connecting rod; 4. Ring plate; 5. Baffle; 51. Slider. DETAILED DESCRIPTION

[0022] The utility model is described in detail below, and the technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0023] The utility model provides a high-sealing vacuum valve through improvement. The technical solution of the utility model is:

[0024] like Figure 1 - Figure 3As shown, a high-sealing vacuum valve comprises a tube body 1, the top end of the side wall of the tube body 1 is fixedly connected to the valve body 2, and also comprises a cylinder 3 and a sealing assembly; the cylinder 3 is fixedly mounted on the top wall of the valve body 2, and a fixing rod 31 is fixedly mounted on the output end of the cylinder 3, and the fixing rod 31 penetrates the valve body 2 and extends to the inside of the valve body 2; the sealing assembly is arranged inside the tube body 1 and the valve body 2, and the sealing assembly comprises a moving plate 32, the moving plate 32 is fixedly mounted on the bottom end wall of the fixing rod 31, the side wall of the moving plate 32 fits with the inner side wall of the valve body 2, a rubber pad is fixedly mounted on the side wall of the moving plate 32, a first connecting rod 33 is fixedly mounted on the bottom end wall of the moving plate 32, a second connecting rod 34 is hingedly connected to the bottom end wall of the first connecting rod 33, and a baffle 5 is hingedly connected to the other end of the second connecting rod 34, and the side wall of the baffle 5 fits with the inner side wall of the tube body 1, and the longitudinal section of the baffle 5 The surface is stepped, and an annular plate 4 is fixedly installed on the inner side wall of the tube body 1, and the baffle plate 5 corresponds to the annular plate 4. A rubber pad is also fixedly installed on the side wall of the baffle plate 5 close to the annular plate 4. The sealing effect is enhanced by the shape setting of the baffle plate 5 and the annular plate 4. A through hole is opened on the top wall of the valve body 2. The air pressure inside the valve body 2 is ensured by the setting of the through hole to prevent the fixed rod 31 from being unable to drive the movable plate 32 to move; start the cylinder 3, the cylinder 3 drives the fixed rod 31 to move downward, and the movable plate 32 moves to drive the movable plate 32 to move. The movement of the movable plate 32 causes the first connecting rod 33 to drive the second connecting rod 34 to move, and the second connecting rod 34 squeezes the baffle 5, so that the baffle 5 is close to the annular plate 4. When the baffle 5 fits the annular plate 4, the left side wall of the annular plate 4 and the inner side wall of the annular plate 4 are just completely fitted with the stepped side wall of the baffle 5, double sealing, and enhanced sealing effect.

[0025] like Figure 2 and Figure 3 As shown, in one embodiment, two slide grooves 11 are provided on the inner side wall of the tube body 1, and the two slide grooves 11 are on the same horizontal plane. Two sliders 51 are fixedly installed on the side wall of the baffle 5, and the two sliders 51 are respectively slidably installed on the inner side walls of the two slide grooves 11. The baffle 5 is limited by the setting of the slide grooves 11 and the sliders 51; in the process of the second connecting rod 34 driving the baffle 5 to move, the slider 51 always moves along the direction of the slide groove 11, so that the baffle 5 always maintains horizontal movement during movement, prevents the baffle 5 from being subjected to uneven force, and makes the movement of the baffle 5 more stable.

[0026] The specific working method is: start the cylinder 3, the cylinder 3 drives the fixed rod 31 to move downward, the moving plate 32 moves to drive the moving plate 32 to move, the movement of the moving plate 32 makes the first connecting rod 33 drive the second connecting rod 34 to move, the second connecting rod 34 squeezes the baffle 5, so that the baffle 5 is close to the annular plate 4, when the baffle 5 fits the annular plate 4, the left side wall of the annular plate 4 and the inner side wall of the annular plate 4 just fit completely with the stepped side wall of the baffle 5, double sealing, and strengthening the sealing effect, when the moving plate 32 moves up, the first connecting rod 33 moves up to drive the second connecting rod 34 to rotate, pull the baffle 5, so that the baffle 5 moves toward the direction of the first connecting rod 33, so that the baffle 5 is away from the annular plate 4, and the material in the tube body 1 flows from between the tube body 1 and the valve body 2, and flows from above the baffle 5, so as to transport the material.

[0027] The technical means disclosed in the utility model are not limited to the technical means disclosed in the above technical means, but also include technical solutions composed of equivalent replacement of the above technical features. Matters not covered in the utility model belong to the common knowledge of those skilled in the art.

Claims

1. A high-sealing vacuum valve, comprising a tube body (1), the top end of the side wall of the tube body (1) being fixedly connected to a valve body (2), characterized in that: Also includes; A cylinder (3), wherein the cylinder (3) is fixedly mounted on the top wall of the valve body (2), and a fixing rod (31) is fixedly mounted on the output end of the cylinder (3), and the fixing rod (31) penetrates the valve body (2) and extends into the interior of the valve body (2); A sealing assembly is arranged inside a tube body (1) and a valve body (2), the sealing assembly comprising a movable plate (32), the movable plate (32) being fixedly mounted on the bottom end wall of a fixed rod (31), the side wall of the movable plate (32) being in contact with the inner side wall of the valve body (2), a first connecting rod (33) being fixedly mounted on the bottom end wall of the movable plate (32), a second connecting rod (34) being hingedly connected to the bottom end wall of the first connecting rod (33), a baffle plate (5) being hingedly connected to the other end of the second connecting rod (34), the side wall of the baffle plate (5) being in contact with the inner side wall of the tube body (1), and an annular plate (4) being fixedly mounted on the inner side wall of the tube body (1).

2. A high-tightness vacuum valve according to claim 1, characterized in that: The longitudinal section of the baffle plate (5) is stepped, and the baffle plate (5) corresponds to the annular plate (4).

3. A high-sealing vacuum valve according to claim 1, characterized in that: The inner side wall of the tube body (1) is provided with two slide grooves (11), and the side wall of the baffle plate (5) is fixedly mounted with two sliders (51), and the two sliders (51) are respectively slidably mounted on the inner side walls of the two slide grooves (11).

4. A high-tightness vacuum valve according to claim 1, characterized in that: A through hole is provided on the top wall surface of the valve body (2).

5. The high-sealing vacuum valve according to claim 1, characterized in that: A rubber pad is fixedly mounted on the side wall of the movable plate (32), and a rubber pad is also fixedly mounted on the side wall of the baffle plate (5) close to the annular plate (4).

Images