A lever exhaust valve

Abstract

The utility model relates to the technical field of exhaust valves, and specifically discloses a lever exhaust valve, including a gas box, a hole is opened at the upper end of the gas box, a mounting seat is fixedly installed at the upper end of the gas box, a U-shaped frame in a vertical state is fixedly installed at the upper rear end of the mounting seat; a screw is rotatably installed at the upper end of the U-shaped frame, a first spring is fixedly installed at the lower end of the screw, a connecting rod is connected to the lower end of the first spring, a second spring is connected to the lower rear end of the connecting rod, and the lower end of the second spring is fixedly installed on the mounting seat; a third spring is connected to the front end of the connecting rod, and a sealing seat is connected to the lower end of the third spring. With the cooperation of the screw, the sealing seat, the first air outlet and other structures, pressure relief operations of different degrees can be performed at all times, so that the device can completely seal the air outlet on the one hand, and on the other hand, when facing a substance that is always releasing pressure, the air outlet can be opened according to the degree of the substance.

Description

Technical Field

[0001] The utility model relates to the technical field of exhaust valves, in particular to a lever exhaust valve. Background Art

[0002] The lever exhaust valve is a device used to automatically remove air from a pipe or container. It is usually installed vertically at the highest point of the system. After the gas gathers, the lever exhaust valve can use the lever principle to open the originally blocked vent hole under the action of the lever, so that the accumulated gas can be discharged.

[0003] Although the traditional lever exhaust valves on the market can adapt to various scenarios, most of them directly block the air outlet, which leads to certain limitations of the lever exhaust valves on the market and makes their working range smaller; such as the commonly seen float exhaust valves on the market, the float rises during use, driving the sealing ring to move up and down, so as to achieve the blocking of the exhaust hole; but some projects on the market may encounter the following situations during operation; such as due to changes in system pressure, temperature or medium type, the valve may need to be adjusted to meet the new working conditions, which will require small-scale exhaust operations, such as in some chemical reaction devices, due to overheating or excessive pressure during operation, it is necessary to relieve pressure at all times to ensure work safety; and most of the traditional lever exhaust valves on the market are in a sealed state for exhaust, and all the exhaust holes are directly opened for exhaust, which makes the equipment limited. Summary of the invention

[0004] The purpose of the utility model is to provide a lever exhaust valve, which can cope with the operation of different substances with the cooperation of structures such as a screw, a first air outlet, a second air outlet, and a third air outlet, so that the scope of use of the equipment is increased and is no longer limited to all sealing conditions to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the utility model provides the following technical solution: a lever exhaust valve, comprising a gas box, a hole is opened at the upper end of the gas box, a mounting seat is fixedly installed at the upper end of the gas box, and a U-shaped frame in a vertical state is fixedly installed at the rear of the upper end of the mounting seat;

[0006] A screw rod is rotatably mounted on the upper end of the U-shaped frame, a first spring is fixedly mounted on the lower end of the screw rod, a connecting rod is connected to the lower end of the first spring, a second spring is connected to the lower rear end of the connecting rod, and the lower end of the second spring is fixedly mounted on the mounting seat;

[0007] The front end of the connecting rod is connected to a third spring, the lower end of the third spring is connected to a sealing seat, and the sealing seat is slidably installed inside the hole;

[0008] The sealing seat is provided with a first air outlet hole, a second air outlet hole and a third air outlet hole of an L-shaped structure on the circumferential surface thereof, a first motor is fixedly installed inside the sealing seat, and a plurality of sealing plates are fixedly installed on the output shaft of the first motor.

[0009] Preferably, both ends of the gas box are fixedly connected with pipelines, and the pipelines are communicated with the interior of the gas box.

[0010] Preferably, a vent hole is provided at the front end of the mounting seat, the vent hole is communicated with the hole, a first groove is provided at the lower end surface of the mounting seat, and a sealing ring groove is provided at the inner upper end of the first groove.

[0011] Preferably, a rubber gasket is fixedly mounted on the upper end of the sealing seat, a sealing ring is fixedly mounted on the upper end of the sealing seat, the sealing ring is located on the inner side of the rubber gasket, and the sealing ring can be mounted inside the sealing ring groove.

[0012] Preferably, slide grooves are fixedly installed on both sides of the interior of the U-shaped frame, a first support plate is rotatably installed on the lower end of the screw rod, and left and right ends of the first support plate are slidably installed inside the slide grooves.

[0013] Preferably, a second support plate is fixedly mounted on the lower end of the first spring, a third support plate is fixedly mounted on the upper end of the second spring, and one end of the connecting rod is mounted between the second support plate and the third support plate.

[0014] Preferably, a vertical stand is fixedly mounted on the right side of the upper end of the mounting seat, a horizontal limit column is fixedly mounted on the left side of the upper end of the stand, and the connecting rod is rotatably mounted on the circumferential surface of the limit column.

[0015] Preferably, a connecting seat is installed between the lower end of the third spring and the upper end of the first motor.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The utility model can perform pressure relief operations of different degrees at all times with the cooperation of the screw, the sealing seat, the first air outlet and other structures, so that on the one hand, the device can completely seal the air outlets, and on the other hand, when facing a substance that is constantly releasing pressure, the air outlets can be opened according to the degree of the substance, so that the use range of the equipment is increased and is no longer limited to all sealing conditions.

[0018] 2. The utility model can adjust the position and height of the sealing seat under the action of the screw, which solves the problem of all the traditional lever exhaust valves on the market being opened at one time, so that the sealing seat can be adjusted to a suitable height for operation according to different scenarios during the use of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is the main structure diagram of the utility model;

[0021] Figure 2 This is a structural diagram of the gas box of the utility model;

[0022] Figure 3 It is a schematic diagram of the mounting seat of the utility model;

[0023] Figure 4 It is a cross-sectional view of the mounting seat of the utility model;

[0024] Figure 5 This is a structural diagram of a U-shaped frame and a connecting rod of the utility model;

[0025] Figure 6 This is a structural diagram of the sealing seat of the utility model;

[0026] Figure 7 It is a cross-sectional view of the sealing seat of the utility model;

[0027] Description of reference numerals:

[0028] 1. Gas box; 111. Hole; 2. Pipe; 3. Mounting seat; 311. Vent; 31. First groove; 32. Sealing ring groove; 33. Vertical plate; 34. Limiting column; 4. U-shaped frame; 41. Slide groove; 5. Screw; 6. First support plate; 7. First spring; 8. Second support plate; 9. Third support plate; 10. Second spring; 11. Connecting rod; 12. Connecting seat; 13. Third spring; 14. Sealing seat; 141. First air outlet; 142. Second air outlet; 143. Third air outlet; 15. Rubber gasket; 16. Sealing ring; 17. First motor; 171. Sealing plate. DETAILED DESCRIPTION

[0029] 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.

[0030] See also Figures 1 to 7 The utility model provides a technical solution: it includes a gas box 1, the upper end of the gas box 1 is provided with a hole 111, the upper end of the gas box 1 is fixedly installed with a mounting seat 3, and the upper rear end of the mounting seat 3 is fixedly installed with a U-shaped frame 4 in a vertical state; the upper end of the U-shaped frame 4 is rotatably installed with a screw rod 5, and the lower end of the screw rod 5 is fixedly installed with a first spring 7, the lower end of the first spring 7 is connected with a connecting rod 11, and the lower rear end of the connecting rod 11 is connected with a second spring 10, and the lower end of the second spring 10 is fixedly installed on the mounting seat 3; the front end of the connecting rod 11 is connected with a third spring 13, and the lower end of the third spring 13 is connected with a sealing seat 14, and the sealing seat 14 is slidably installed in the hole 111; the circumferential surface of the sealing seat 14 is provided with a first outlet of an L-shaped structure The air hole 141, the second air outlet hole 142, and the third air outlet hole 143, the first motor 17 is fixedly installed inside the sealing seat 14, and a plurality of sealing plates 171 are fixedly installed on the output shaft of the first motor 17; the two ends of the gas box 1 are fixedly connected with the pipeline 2, and the pipeline 2 is connected with the inside of the gas box 1; the front end of the mounting seat 3 is provided with a vent hole 311, and the vent hole 311 is connected with the hole 111, and the lower end surface of the mounting seat 3 is provided with a first groove 31, and the upper end of the first groove 31 is provided with a sealing ring groove 32; the upper end of the sealing seat 14 is fixedly installed with a rubber gasket 15, and the upper end of the sealing seat 14 is fixedly installed with a sealing ring 16, and the sealing ring 16 is located on the inner side of the rubber gasket 15, and the sealing ring 16 can be installed in the sealing ring groove 32.

[0031] By adopting the above technical solution, the conventional lever exhaust valve on the market, when operating, is mostly in the following situation: mechanically or manually move one end of the lever upward or downward, so that the sealing column can move in the opposite direction under the action of the lever principle, and then open the air outlet. This leads to certain limitations of the conventional lever exhaust valve on the market. When facing materials or operations that need to release pressure at all times, it is impossible to adjust the flow rate of the exhaust valve according to the different materials, and it is impossible to adjust the opening and closing degree of the valve according to the different materials. The structure of the device is as follows: it includes a gas box 1, a pipeline 2 The left and right ends of the gas box 1 are fixedly installed with pipes 2 of the same structure. The pipes 2 are connected to the inside of the gas box 1. The pipes 2 can allow gas to flow into the inside of the gas box 1. Since the internal space of the gas box 1 is limited, pressure relief is required when the gas density is high. Therefore, a mounting seat 3 is fixedly installed on the upper end surface of the gas box 1. Bolts are fixedly installed on the four corners of the mounting seat 3. The lower ends of the bolts are fixedly connected to the upper end of the gas box 1 to prevent the mounting seat 3 from moving or being unsafe. Secondly, a hole 111 is fixedly installed on the upper end of the gas box 1, and a ventilating hole 111 is provided on the mounting seat 3. The diameter of the vent hole 311 is the same as that of the hole 111, so the gas inside the gas box 1 passes through the hole 111 and then through the vent hole 311, and then floats to the outside; the lower end surface of the mounting seat 3 is located outside the vent hole 311 and is provided with a first groove 31, and a sealing ring groove 32 is provided at the upper end of the first groove 31, and the diameter of the sealing ring groove 32 is larger than the vent hole 311; secondly, a sealing seat 14 is slidably installed inside the hole 111, a rubber gasket 15 is fixedly installed at the upper end of the sealing seat 14, and a sealing ring 16 is fixedly installed at the upper end of the sealing seat 14; and on the sealing seat 1 4 is provided with a first air outlet hole 141, a second air outlet hole 142, and a third air outlet hole 143 of an L-shaped structure, wherein the first air outlet hole 141 is lower than the second air outlet hole 142, the second air outlet hole 142 is lower than the third air outlet hole 143, and the diameter of the third air outlet hole 143 is larger than the second air outlet hole 142, and the diameter of the second air outlet hole 142 is larger than the first air outlet hole 141; and a first motor 17 in a vertical state is fixedly installed inside the sealing seat 14, the output shaft of the first motor 17 is located outside the sealing seat 14, and a plurality of sealing plates 171 are fixedly installed on the circumferential surface of the output shaft of the first motor 17.

[0032] During use, the lower end of the sealing seat 14 is flush with the lower end of the hole 111, so that the sealing seat 14 can seal the hole 111, so that the internal gas of the gas box 1 cannot be discharged. Then, the sealing seat 14 moves downward. At this time, the first air outlet 141 is connected with the interior of the gas box 1, and the gas inside the gas box 1 will enter the interior of the first air outlet 141, and then be discharged from the top outlet of the first air outlet 141. After the sealing seat 14 continues to descend, the second air outlet 142 is connected with the interior of the gas box 1. At this time, the gas inside the gas box 1 will enter the first air outlet 141 and the second air outlet 142, and then be discharged from the outlets of the first air outlet 141 and the second air outlet 142. The same sealing seat 14 continues to descend. At this time, the third air outlet 143 is connected with the interior of the gas box 1, and then the The first motor 17 is started, and the output shaft of the first motor 17 rotates synchronously with the sealing plate 171, and the sealing plate 171 blocks the first air outlet 141 and the second air outlet 142. At this time, only the third air outlet 143 is connected to the inside of the gas box 1. At this time, the gas inside the gas box 1 enters the inside of the third air outlet 143, and then is discharged from the top outlet of the third air outlet 143; according to the above-mentioned structural coordination, with the coordination of the sealing seat 14, the first air outlet 141, the second air outlet 142, the third air outlet 143 and other structures, it is possible to achieve sealing of different substances and exhaust of different substances, which solves the problem that traditional lever exhaust valves on the market can only be fully opened or fully blocked, and realizes that the exhaust valve can achieve exhaust operation at different times according to different substances, thereby increasing the application range of the exhaust valve.

[0033] Specifically, Figure 1 and Figure 7 As shown, the U-shaped frame 4 is fixedly installed with slide grooves 41 on both sides thereof, the first support plate 6 is rotatably installed on the lower end of the screw rod 5, the left and right ends of the first support plate 6 are slidably installed inside the slide groove 41, the second support plate 8 is fixedly installed on the lower end of the first spring 7, the third support plate 9 is fixedly installed on the upper end of the second spring 10, one end of the connecting rod 11 is installed between the second support plate 8 and the third support plate 9, a vertical stand 33 is fixedly installed on the right side of the upper end of the mounting seat 3, a horizontal limit column 34 is fixedly installed on the left side of the upper end of the stand 33, and the connecting rod 11 is rotatably installed on the circumferential surface of the limit column 34; a connecting seat 12 is installed between the lower end of the third spring 13 and the upper end of the first motor 17.

[0034] By adopting the above technical scheme, the traditional lever exhaust valve on the market will use mechanical devices or manual pressure relief operations when operating. However, due to the lever principle, mechanical or manual pressure relief can only open all the air outlets, and it is impossible to adjust the flow rate and density of gas discharge according to different substances; the structure of the device is as follows: a U-shaped frame 4 in a vertical state is fixedly installed on the upper rear end of the mounting seat 3, the U-shaped frame 4 and the mounting seat 3 are in a mutually perpendicular state, and a slide groove 41 is fixedly installed on the inner wall of the U-shaped frame 4; a screw rod 5 is rotatably installed on the upper end of the U-shaped frame 4, wherein the lower end of the screw rod 5 is located inside the U-shaped frame 4, and the lower end of the screw rod 5 is rotatably connected to a first support plate 6, and a first spring 7 is fixedly installed on the lower end surface of the first support plate 6, and a second support plate 8 is fixedly installed on the lower end of the first spring 7. Secondly, the upper end surface of the mounting seat 3 is located at the U A second spring 10 in a vertical state is fixedly installed inside the frame 4, and a third support plate 9 is fixedly installed on the upper end of the second spring 10, and one end of a connecting rod 11 is placed between the second support plate 8 and the third support plate 9; a vertical plate 33 is fixedly installed on the upper end surface of the mounting seat 3 near the right edge, and a limiting column 34 is fixedly installed on the upper end of the left side surface of the vertical plate 33, and the center position of the connecting rod 11 is rotatably installed on the circumferential surface of the limiting column 34, and a third spring 13 is fixedly installed on the front end of the connecting rod 11, and a connecting seat 12 is fixedly installed on the lower end of the third spring 13, and the lower end of the connecting seat 12 is rotatably connected to the output shaft of the first motor 17, wherein the left and right ends of the first support plate 6, the second support plate 8, and the third support plate 9 protrude outward and are slidably installed in the inside of the slide groove 41, this structure is to prevent the screw 5 from rotating synchronously with the first support plate 6,

[0035] During use, the lower end of the screw rod 5 moves downward, and the lower end of the screw rod 5 will make the first support plate 6 descend synchronously. When the first support plate 6 descends, it squeezes the first spring 7, and the lower end of the first spring 7 will push the second support plate 8, and when the second support plate 8 moves downward, it will push the connecting rod 11, so that the connecting rod 11 will rotate around the limit column 34 as the center, and when the connecting rod 11 rotates counterclockwise, the rear end will make the third support plate 9 move downward, and the third support plate 9 will contract the second spring 10; secondly, the front end of the connecting rod 11 will move upward, and the connecting rod 11 will move upward with the third spring 13, and the third spring 13 will automatically contract. At this time, the lower end of the third spring 13 will move upward with the sealing seat 14, and during the upward movement of the sealing seat 14, the sealing ring 16 will be combined with the sealing ring groove 32, so that the hole 111 is in a sealed state; then the reverse operation is performed according to the above steps. At this time, the connecting rod 11 will push the third spring 13. The third spring 13 moves downward, and during the downward movement of the third spring 13, due to the limited degree of contraction of the third spring 13, the third spring 13 will push the sealing seat 14 to move downward, and during the downward movement of the sealing seat 14, the first air outlet 141, the second air outlet 142, and the third air outlet 143 will be opened in sequence, and then the first air outlet 141, the second air outlet 142, and the third air outlet 143 are blocked according to the above steps, so that the first air outlet 141, the second air outlet 142, and the third air outlet 143 can cope with the pressure relief operation of different substances; the device can adjust the height of the sealing seat 14 under the action of the screw 5, the connecting rod 11 and other structures, so that the first air outlet 141, the second air outlet 142, and the third air outlet 143 can be kept at a fixed height for a long time, so that the device can achieve pressure relief or sealing at all times when corresponding to different substances, which solves the problem that traditional mechanical levers on the market can only open all the air outlets.

[0036] Working principle: First, manually adjust the screw 5, the screw 5 moves upward, the screw 5 moves synchronously with the first support plate 6, the first support plate 6 moves upward synchronously with the first spring 7, and the first spring 7 moves synchronously with the second support plate 8 at the lower end.

[0037] At this time, the upper end of the second spring 10 will push the third support plate 9 to move upward, and at this time, the third support plate 9 will push the connecting rod 11 to rotate.

[0038] When the connecting rod 11 rotates, the front end of the connecting rod 11 moves downward with the third spring 13, and the third spring 13 pushes the sealing seat 14 to move downward, so that the first air outlet 141, the second air outlet 142, and the third air outlet 143 on the sealing seat 14 are opened.

[0039] Finally, during use, the first motor 17 is started, and the output shaft of the first motor 17 rotates synchronously with the sealing plate 171 , and the sealing plate 171 blocks the first air outlet 141 and the second air outlet 142 .

[0040] In addition, by performing the above steps in reverse, the first gas outlet 141 , the second gas outlet 142 , and the third gas outlet 143 can be disconnected from the gas box 1 , so that the gas inside the gas box 1 cannot flow out.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A lever exhaust valve, comprising a gas box (1), wherein a hole (111) is formed at the upper end of the gas box (1), characterized in that: A mounting seat (3) is fixedly mounted on the upper end of the gas box (1), and a U-shaped frame (4) in a vertical state is fixedly mounted on the rear portion of the upper end of the mounting seat (3); A screw rod (5) is rotatably mounted on the upper end of the U-shaped frame (4); a first spring (7) is fixedly mounted on the lower end of the screw rod (5); a connecting rod (11) is connected to the lower end of the first spring (7); a second spring (10) is connected to the lower rear end of the connecting rod (11); and the lower end of the second spring (10) is fixedly mounted on the mounting seat (3); The front end of the connecting rod (11) is connected to a third spring (13), the lower end of the third spring (13) is connected to a sealing seat (14), and the sealing seat (14) is slidably mounted inside the hole (111); A first air outlet hole (141), a second air outlet hole (142), and a third air outlet hole (143) of an L-shaped structure are provided on the circumferential surface of the sealing seat (14); a first motor (17) is fixedly mounted inside the sealing seat (14); and a plurality of sealing plates (171) are fixedly mounted on the output shaft of the first motor (17).

2. A lever exhaust valve according to claim 1, characterized in that: Pipelines (2) are fixedly connected to both ends of the gas box (1), and the pipelines (2) are connected to the interior of the gas box (1).

3. A lever exhaust valve according to claim 1, characterized in that: The front end of the mounting seat (3) is provided with a vent hole (311), the vent hole (311) is connected with the hole (111), the lower end surface of the mounting seat (3) is provided with a first groove (31), and the upper end of the first groove (31) is provided with a sealing ring groove (32).

4. A lever exhaust valve according to claim 1, characterized in that: A rubber gasket (15) is fixedly mounted on the upper end of the sealing seat (14), a sealing ring (16) is fixedly mounted on the upper end of the sealing seat (14), the sealing ring (16) is located on the inner side of the rubber gasket (15), and the sealing ring (16) can be mounted inside the sealing ring groove (32).

5. A lever exhaust valve according to claim 4, characterized in that: Slide grooves (41) are fixedly installed on both sides of the interior of the U-shaped frame (4), and a first support plate (6) is rotatably installed on the lower end of the screw rod (5), and the left and right ends of the first support plate (6) are slidably installed inside the slide grooves (41).

6. A lever exhaust valve according to claim 1, characterized in that: A second support plate (8) is fixedly mounted on the lower end of the first spring (7), a third support plate (9) is fixedly mounted on the upper end of the second spring (10), and one end of the connecting rod (11) is mounted between the second support plate (8) and the third support plate (9).

7. The lever exhaust valve according to claim 1, characterized in that: A vertical stand plate (33) is fixedly mounted on the right side of the upper end of the mounting seat (3), a horizontal limit column (34) is fixedly mounted on the left side of the upper end of the stand plate (33), and the connecting rod (11) is rotatably mounted on the circumferential surface of the limit column (34).

8. The lever exhaust valve according to claim 1, characterized in that: A connecting seat (12) is installed between the lower end of the third spring (13) and the upper end of the first motor (17).

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