Pneumatic stop valve easy to assemble

Abstract

The utility model discloses a pneumatic cut-off valve easy to assemble, which comprises a pipeline and a valve body arranged on the pipeline, a liquid inlet hole and a liquid outlet hole are arranged in the pipeline, and the liquid inlet hole and the liquid outlet hole are communicated through a longitudinal circulation hole. A blocking plate capable of sealing the through hole is connected in the liquid outlet hole in an up-down sliding manner; according to the utility model, the blockage plate is controlled to ascend and descend to control the circulation of the through hole, and the blockage plate, the piston and the connecting rod are mounted through threaded connection and are easy to disassemble and assemble; the clamping groove and the sliding groove are formed in the liquid outlet hole, so that a worker can conveniently slide the piston into the clamping groove through the sliding groove and position the piston, and the piston is easily in threaded connection with the connecting rod; the piston in the pneumatic lifting device can ascend and descend in a pneumatic mode, when an air inlet and outlet system fails, a worker can control the through hole to be in a blocked state by manually screwing the shifting disc, and reliability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic cut-off valves, in particular to a pneumatic cut-off valve which is easy to assemble. Background Art

[0002] A pneumatic shut-off valve is a valve that uses pneumatic means to push the valve to cut off and open the pipeline.

[0003] The pneumatic shut-off valve includes a valve body, a valve, and a pneumatic actuator. Among them, the valve body is more difficult to install. As shown in a special groove clamp self-locking pneumatic shut-off valve disclosed in application No. 202020380454.7, when the valve is assembled as a whole, the staff is required to first insert the control valve stem into the lower valve body, and then manually insert the channel sealing gasket and other seals into the lower valve body and install them at the end of the control valve stem. This process is relatively cumbersome and requires the staff to perform it in an invisible state, which is difficult. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides an easy-to-assemble pneumatic shut-off valve, which is used to solve the problem that the prior pneumatic shut-off valve assembly process is relatively complicated.

[0005] The utility model provides the following technical solution: an easily assembled pneumatic shut-off valve, comprising a pipeline and a valve body arranged on the pipeline, wherein a liquid inlet hole and a liquid outlet hole are arranged in the pipeline, the liquid inlet hole and the liquid outlet hole are connected through a longitudinal flow hole, and a plugging plate capable of closing the through hole is slidably connected up and down in the liquid outlet hole;

[0006] A connecting plate is provided on the outer curved surface of the pipeline, the valve body is fixed on the connecting plate, a valve cavity is provided in the valve body, a piston is connected to the valve cavity for sliding up and down, the piston and the blocking plate are connected by a connecting rod, the connecting rod is threadedly connected to the piston and the blocking plate, a spring is provided on the outer sleeve of the connecting rod, the spring is located in the valve cavity and is used to support the piston;

[0007] The valve body is also provided with an air inlet and outlet system for pushing the piston to move up and down.

[0008] Preferably, the blocking plate is arc-shaped, and a baffle abutting against the blocking plate to prevent the blocking plate from rotating is provided on the side surface of the liquid outlet.

[0009] Preferably, a slot penetrating upward and matching the shape of the blocking plate is provided in the side surface of the through hole.

[0010] Preferably, the liquid outlet hole penetrates to the right, and the front-to-back width of the blocking plate is the narrowest. A slide groove is provided in the curved surface of the liquid inlet hole, which penetrates to the right and is connected to the card slot. The front-to-back width of the slide groove is adapted to the front-to-back width of the blocking plate.

[0011] Preferably, the air inlet and outlet system comprises an air inlet hole and an air outlet hole arranged in the upper side surface of the valve cavity, the air inlet hole is connected to the air inlet pipe, and an air valve is arranged in the air outlet hole.

[0012] Preferably, a pressure rod extending to the upper side of the valve body is slidably connected up and down in the valve cavity, and the pressure rod abuts against the piston at the uppermost side.

[0013] Preferably, a threaded portion is integrally formed at the upper end of the pressure rod, an internally threaded barrel is rotatably connected to the upper side surface of the valve body, the internally threaded barrel is threadedly connected to the threaded portion, and a dial is provided at the upper end of the internally threaded barrel.

[0014] Preferably, an air inlet hole is provided in the side surface of the valve cavity, and a one-way valve for one-way flow into the valve cavity is provided in the air inlet hole.

[0015] Preferably, a rubber plate is respectively provided on the lower side of the pressure rod and the upper side of the piston.

[0016] The utility model provides a pneumatic shut-off valve which is easy to assemble and has the following beneficial effects:

[0017] The invention uses a new type of internal device to control the flow of the through hole by controlling the lifting of the blocking plate, and the blocking plate, the piston and the connecting rod are installed by threaded connection, which is easy to disassemble and assemble;

[0018] The liquid outlet of the utility model is provided with a clamping groove and a sliding groove, which is convenient for the staff to slide the piston into the clamping groove through the sliding groove and position it, and makes it easy to be threadedly connected with the connecting rod;

[0019] The piston in the utility model can be lifted and lowered pneumatically, and when the air inlet and outlet systems fail, the staff can also control the through hole to be in a blocked state by manually turning the dial, so the reliability is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the appearance of the utility model;

[0021] Figure 2 It is a structural schematic diagram of the utility model.

[0022] In the figure:

[0023] 11. Pipeline; 12. Valve body; 13. Through hole; 14. Blocking plate; 15. Connecting plate; 16. Valve chamber; 17. Piston; 18. Connecting rod; 19. Slide groove; 20. Press rod; 21. Internally threaded cylinder; 22. Toggle plate; 23. One-way valve; 24. Baffle; 25. Slot. DETAILED DESCRIPTION

[0024] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0027] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; 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, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] Reference Figure 1-Figure 2According to an embodiment of the utility model, an easily assembled pneumatic shut-off valve comprises a pipeline 11 and a valve body 12 arranged on the pipeline 11, wherein a liquid inlet hole and a liquid outlet hole are arranged in the pipeline 11, wherein the liquid inlet hole and the liquid outlet hole are connected via a longitudinal flow hole 13, and a blocking plate 14 capable of closing the through hole 13 is slidably connected up and down in the liquid outlet hole. Specifically, flanges connected to other pipe fittings are arranged at both ends of the pipeline 11, wherein the medium enters the liquid inlet hole through the pipe fitting and flows out after passing through the through hole 13 and the liquid outlet hole. When it is necessary to cut off the flow of the medium, the blocking plate 14 is pressed down and closes the through hole 13.

[0029] A connecting plate 15 is provided on the outer curved surface of the pipe 11, and the valve body 12 is fixed on the connecting plate 15. In the present embodiment, the lifting and lowering of the piston 17 is controlled by pneumatic means. Specifically, a valve cavity 16 is provided in the valve body 12, and a piston 17 is connected to the valve cavity 16 for sliding up and down. The piston 17 and the blocking plate 14 are connected by a connecting rod 18. The valve body 12 is also provided with an air inlet and outlet system for pushing the piston 17 to move up and down.

[0030] The air inlet and outlet system includes an air inlet hole and an air outlet hole provided in the upper side of the valve cavity 16, each of the air inlet hole and the air outlet hole is provided with an air valve, the air inlet hole is connected to the air inlet pipe, and the air inlet pipe can be connected to the air compressor, and the connecting rod 18 is covered with a spring, which is located in the valve cavity 16 and is used to support the piston 17;

[0031] That is, when air is taken in by the air inlet, the piston 17 will press down the blocking plate 14 through the connecting rod 18 until the blocking plate 14 closes the through hole 13. When air is discharged from the air outlet, the spring will drive the piston 17 and the blocking plate 14 to rebound. At this time, the through hole 13 is no longer closed, and the medium can flow normally.

[0032] To facilitate installation, the connecting rod 18 is threadedly connected to the piston 17 and the blocking plate 14. In addition, the blocking plate 14 is elliptical, and a baffle 24 abutting against the blocking plate 14 is provided on the side of the liquid outlet. The baffle 24 can limit the rotation of the blocking plate 14 to avoid obstruction when the connecting rod 18 is screwed into the blocking plate 14.

[0033] In addition, a slot 25 adapted to the shape of the blocking plate 14 is provided in the side of the through hole 13, the liquid outlet is extended to the right, and the front-to-back width of the blocking plate 14 is the narrowest, and a slide groove 19 is provided in the side of the liquid inlet hole, which is extended to the right and connected to the slot 25, and the front-to-back width of the slide groove 19 is adapted to the front-to-back width of the blocking plate 14.

[0034] With such a design, the staff can slide the blocking plate 14 to the left into the slot 25 through the slide groove 19, and then the staff can insert the connecting rod 18 into the liquid outlet and screw it into the blocking plate 14. The design of the slot 25 and the slide groove 19 makes it easy to position the blocking plate 14 and facilitate threaded connection with the connecting rod 18. The design of the baffle 24 prevents the blocking plate 14 from rotating during the connection process with the connecting rod 18.

[0035] In the second embodiment of the pneumatic shut-off valve that is easy to assemble, it also includes a method for manually controlling the blocking plate 14, specifically, a pressure rod 20 extending to the upper side of the valve body 12 is slidably connected to the inside of the valve cavity 16, and the pressure rod 20 abuts against the piston 17 at the uppermost side. The upper end of the pressure rod 20 is integrally formed with a threaded portion, and an internal threaded barrel 21 is rotatably connected to the upper side surface of the valve body 12. The internal threaded barrel 21 is threadedly connected to the threaded portion, and a toggle plate 22 is provided on the internal threaded barrel 21. When the air inlet and outlet system fails, the staff can rotate the toggle plate 22 and drive the pressure rod 20 to move downward through the internal threaded barrel 21. During this process, the pressure rod 20 will press down the piston 17 and the blocking plate 14 and close the through hole 13.

[0036] In this embodiment, the threaded portion extends to the upper side of the internal threaded barrel 21 , so that a worker can observe the height of the pressing rod 20 by observing the length of the threaded portion.

[0037] In addition, an air inlet hole is provided in the side of the valve cavity 16 , and a one-way valve 23 for one-way flow into the valve cavity 16 is provided in the air inlet hole to prevent negative pressure from being generated in the valve cavity 16 when the piston 17 is pressed down by the pressure rod 20 .

[0038] In addition, a rubber plate for increasing friction is respectively provided on the lower side of the pressure rod 20 and the upper side of the piston 17. The establishment of the rubber plate prevents the pressure rod 20 and the piston 17 from rotating relative to each other when the pressure rod 20 abuts against the piston 17, and when the piston 17 is not located at the uppermost side, the dial 22 and the pressure rod 20 will produce idle rotation.

[0039] The above description is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any changes or modifications made by any technician in the field of the present invention are included in the patent scope of the present invention.

Claims

1. An easily assembled pneumatic shut-off valve, comprising a pipeline (11) and a valve body (12) arranged on the pipeline (11), characterized in that: The pipe (11) is provided with a liquid inlet hole and a liquid outlet hole, the liquid inlet hole and the liquid outlet hole are connected via a longitudinal flow hole (13), and a blocking plate (14) capable of closing the through hole (13) is slidably connected up and down in the liquid outlet hole; A connecting plate (15) is provided on the outer curved surface of the pipe (11), the valve body (12) is fixed on the connecting plate (15), a valve cavity (16) is provided in the valve body (12), a piston (17) is slidably connected in the valve cavity (16) up and down, the piston (17) and the blocking plate (14) are connected via a connecting rod (18), the connecting rod (18) is threadedly connected to the piston (17) and the blocking plate (14), a spring is provided on the outer sleeve of the connecting rod (18), the spring is located in the valve cavity (16) and is used to support the piston (17); The valve body (12) is also provided with an air inlet and outlet system for pushing the piston (17) to move up and down.

2. An easily assembled pneumatic shut-off valve according to claim 1, characterized in that: The blocking plate (14) is arc-shaped, and a baffle (24) is provided on the side of the liquid outlet hole, the baffle being in contact with the blocking plate (14) to prevent the baffle from rotating.

3. An easily assembled pneumatic shut-off valve according to claim 2, characterized in that: A slot (25) penetrating upward and matching the shape of the blocking plate (14) is provided in the side surface of the through hole (13).

4. An easily assembled pneumatic shut-off valve according to claim 3, characterized in that: The liquid outlet hole is through-connected to the right, and the front-to-back width of the blocking plate (14) is the narrowest. A slide groove (19) is provided in the curved surface of the liquid inlet hole, which is through-connected to the right and connected to the clamping groove (25). The front-to-back width of the slide groove (19) is adapted to the front-to-back width of the blocking plate (14).

5. The pneumatic shut-off valve that is easy to assemble according to claim 1 is characterized in that: The air inlet and outlet system comprises an air inlet hole and an air outlet hole arranged in the upper side of the valve cavity (16); the air inlet hole is connected to the air inlet pipe, and an air valve is arranged in the air outlet hole.

6. The pneumatic shut-off valve that is easy to assemble according to claim 1, characterized in that: A pressure rod (20) extending to the upper side of the valve body (12) is slidably connected up and down in the valve cavity (16), and the pressure rod (20) abuts against the piston (17) located at the uppermost side.

7. An easily assembled pneumatic shut-off valve according to claim 6, characterized in that: The upper end of the pressure rod (20) is integrally formed with a threaded portion, an internally threaded barrel (21) is rotatably connected to the upper side surface of the valve body (12), the internally threaded barrel (21) is threadedly connected to the threaded portion, and a dial (22) is provided at the upper end of the internally threaded barrel (21).

8. An easily assembled pneumatic shut-off valve according to claim 7, characterized in that: An air inlet hole is provided in the side surface of the valve cavity (16), and a one-way valve (23) for one-way flow into the valve cavity (16) is provided in the air inlet hole.

9. The pneumatic shut-off valve that is easy to assemble according to claim 7, characterized in that: A rubber plate is respectively provided on the lower side of the pressure rod (20) and the upper side of the piston (17).

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