Swing valve with purging function

Abstract

The utility model relates to the technical field of valves, in particular to a swing valve with a purging function, which comprises a lower valve body, an upper valve seat, an air cylinder, a connector, a rocker arm, a rotating shaft, a swing arm, a ring-type purging device and a sealing valve plate. A telescopic rod of the air cylinder is connected with a connector, the connector drives a rotating shaft to rotate through a rocker arm, the rotating shaft is connected with a swing arm, the swing arm drives the sealing valve plate to act, and an annular blowing device is arranged outside the lower valve body in a connected mode. According to the swing valve with the purging function, air or other cleaning media can be injected into the valve cavity through the arranged annular purging device, accumulated materials in the valve cavity are removed, the materials are prevented from being accumulated and blocking the valve cavity, and normal operation of the valve is kept; accumulated materials in the valve cavity can be removed in time, smooth conveying of the materials is kept, and the efficiency and stability of logistics transportation are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, and more specifically to a swing valve with a self-blowing function. Background Art

[0002] The swing valve is an important component in the dense phase positive pressure pneumatic conveying system. It is generally used in thermal power plants, metallurgy, medicine, chemical industry and other industries to transport various types of dust, particles and semi-fluid media. The swing valve opens and closes the valve by rotating the valve plate swing arm through the rotating shaft.

[0003] An existing electric three-way swing valve, with announcement number CN 215334628 U, includes an upper valve seat, a lower valve body, an electric actuator, a coupling box, a first rocker arm, a connecting rod, a swing arm, and a valve plate. A lower valve body is fixed at the bottom of the upper valve seat, and the interior of the assembly formed by the upper valve seat and the lower valve body is a cavity. A feed inlet is provided on the lower valve body, and two discharge ports are provided on the upper valve seat. A first discharge pipe and a second discharge pipe corresponding to the two discharge ports are fixed on the upper valve seat. An electric actuator is fixed on the upper valve seat, and the electric actuator is connected to a coupling box. The output end of the coupling box is a first rotating shaft, and a first rocker arm is fixed at the end of the first rotating shaft. In the process of material transportation, the utility model is prone to material accumulation in the valve cavity, affecting the normal material transportation efficiency; in some dirty or particulate media, the interior of the swing valve is prone to blockage and pollution, resulting in the valve being unable to open and close normally, affecting the normal operation of the system. Summary of the invention

[0004] In order to overcome the above-mentioned defects of the prior art, the purpose of the utility model is to provide a swing valve with a self-contained purge function, by adding a purge device to clean the valve cavity to prevent internal blockage.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a swing valve with built-in purge function, comprising a lower valve body, an upper valve seat, a cylinder, a connecting head, a rocker arm, a rotating shaft, a swing arm, a ring-type purge device, and a sealing valve plate. The lower valve body is fixedly connected to the upper valve seat by bolts, a cylinder is provided on one side of the upper valve seat, the telescopic rod of the cylinder is connected to the connecting head, the connecting head drives the rotating shaft to rotate through the rocker arm, the rotating shaft is connected to the swing arm, the swing arm drives the sealing valve plate to move, and the lower valve body is connected to a ring-type purge device.

[0006] Preferably, the lower valve body and the upper valve seat have a cavity inside, the lower valve body is provided with a discharge port, and the center of the upper valve seat is provided with a feed port.

[0007] Preferably, the feed port is adapted to the discharge port, a sealing valve plate is provided at the feed port, and the sealing valve plate is connected to a swing arm.

[0008] Preferably, the connecting head is hingedly connected to the rocker arm, the other side of the rocker arm is rotatably connected to a rotating shaft, the rotating shaft is rotatably connected to the upper valve seat, and one end of the rotating shaft passes through the upper valve seat and extends into the lower valve body.

[0009] Preferably, a swing arm is provided at one end of the rotating shaft, and the swing arm is fixedly connected to the rotating shaft, and the swing arm can control the sealing valve plate to swing around the rotating shaft.

[0010] Preferably, a compression spring is provided at the connection between the swing arm and the sealing valve plate.

[0011] Preferably, the annular purge device comprises a plurality of three-way pipe fittings and connecting pipes, connecting pipes are provided between adjacent three-way pipe fittings, the three-way pipe fittings are inwardly connected to the lower valve body, and the three-way pipe fitting at the inlet of the annular purge device is connected to a one-way valve.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model provides a swing valve with a self-blowing function. The ring-type blower device can inject air or other cleaning media into the valve cavity to remove the accumulated materials in the valve cavity, prevent the materials from accumulating and blocking the valve cavity, and maintain the normal operation of the valve;

[0014] 2. The utility model is a swing valve with a self-blowing function. The swing valve with a ring-type purge system can timely clear the accumulated materials in the valve cavity, maintain the smooth transportation of materials, and improve the efficiency and stability of logistics transportation;

[0015] 3. The utility model provides a ring-type purge system for the swing valve with a built-in purge function, which makes the valve maintenance more convenient. The valve cavity can be cleaned by controlling the purge system, thus saving maintenance time and cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front view of a swing valve with a purge function of the utility model;

[0017] Figure 2 It is a side sectional view of a swing valve with a self-purging function of the utility model;

[0018] Figure 3 This is a sectional view of the AA section of a swing valve with a self-purging function of the utility model;

[0019] In the figure: 1-lower valve body, 2-upper valve seat, 3-cylinder, 4-connector, 5-rocker arm, 6-rotating shaft, 7-swing arm, 8-compression spring, 9-ring purge device, 91-tee pipe fitting, 92-connecting pipe, 10-sealing valve plate, 11-discharge port, 12-feed port. DETAILED DESCRIPTION

[0020] 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.

[0021] See also Figure 1-3 In the embodiment of the utility model, a swing valve with a self-blowing function includes a lower valve body 1, an upper valve seat 2, a cylinder 3, a connector 4, a rocker arm 5, a rotating shaft 6, a swing arm 7, a ring-type purge device 9, and a sealing valve plate 10. The lower valve body 1 and the upper valve seat 2 are internally a cavity. The lower valve body 1 is fixedly connected to the upper valve seat 2 by bolts. The feed port 12 is adapted to the discharge port 11. A sealing valve plate 10 is provided at the feed port 12. The sealing valve plate 10 is connected to the swing arm 7. The lower valve body 1 is provided with a discharge port 11. The center of the upper valve seat 2 is provided with a feed port 12. A cylinder 3 is provided on one side of the upper valve seat 2. The telescopic rod of the cylinder 3 is connected to the connector 4. The connector 4 is hinged to the rocker arm 5. The other side of the rocker arm 5 is rotatably connected to the rotating shaft 6. The rotating shaft 6 can rotate Connected to the upper valve seat 2, one end of the rotating shaft 6 passes through the upper valve seat 2 and extends into the lower valve body 1, one end of the rotating shaft 6 is provided with a swing arm 7, the swing arm 7 is fixedly connected to the rotating shaft 6, the swing arm 7 can control the sealing valve plate 10 to swing around the rotating shaft 6, the connecting head 4 drives the rotating shaft 6 to rotate through the rocker arm 5, the rotating shaft 6 is connected to the swing arm 7, the swing arm 7 drives the sealing valve plate 10 to move, a compression spring 8 is provided at the connection between the swing arm 7 and the sealing valve plate 10, the lower valve body 1 is externally connected with an annular purge device 9, the annular purge device 9 includes a plurality of three-way pipe fittings 91 and connecting pipes 92, a connecting pipe 92 is provided between adjacent three-way pipe fittings 91, the three-way pipe fitting 91 is inwardly connected to the lower valve body 1, and the three-way pipe fitting 91 at the inlet of the annular purge device 9 is connected to a one-way valve.

[0022] Working principle:

[0023] During the use of the swing valve with a self-purging function of the utility model, the cylinder 3 pushes the rocker arm 5 through the connecting head 4, the rocker arm 5 drives the rotating shaft 6 and the swing arm 7, and the swing arm 7 drives the sealing valve plate 5 to realize the opening and closing of the valve. The back of the sealing valve plate 5 is provided with a compression spring 8, and the spring force always makes the sealing surface of the sealing valve plate 5 fit tightly with the sealing ring to prevent the material from entering between the sealing surfaces. When the material accumulates and clogs the valve cavity, the annular purge device 9 on the outside of the lower valve body 1 is opened through the valve air intake, and air is supplied to the valve cavity through the one-way valve and the three-way pipe fitting 91, and the valve cavity is purged in a switching manner to blow away the material remaining in the valve cavity. The one-way valve can prevent the airflow in the valve cavity from flowing back.

[0024] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention falls within the protection scope of the present invention.

Claims

1. A swing valve with a built-in purge function, characterized in that: The invention comprises a lower valve body (1), an upper valve seat (2), a cylinder (3), a connecting head (4), a rocker arm (5), a rotating shaft (6), a swing arm (7), a ring-type purge device (9), and a sealing valve plate (10), wherein the lower valve body (1) is fixedly connected to the upper valve seat (2) by bolts, a cylinder (3) is provided on one side of the upper valve seat (2), a telescopic rod of the cylinder (3) is connected to the connecting head (4), the connecting head (4) drives the rotating shaft (6) to rotate via the rocker arm (5), and the rotating shaft ( 6) connecting a swing arm (7), the swing arm (7) driving the sealing valve plate (10) to move, the lower valve body (1) is externally connected to an annular purge device (9), the annular purge device (9) comprises a plurality of three-way pipe fittings (91) and connecting pipes (92), connecting pipes (92) are provided between adjacent three-way pipe fittings (91), the three-way pipe fitting (91) is inwardly connected to the lower valve body (1), and the three-way pipe fitting (91) at the inlet of the annular purge device (9) is connected to a one-way valve.

2. A swing valve with a self-purging function as claimed in claim 1, characterized in that: The lower valve body (1) and the upper valve seat (2) have a cavity inside, the lower valve body (1) is provided with a discharge port (11), and the center of the upper valve seat (2) is provided with a feed port (12).

3. A swing valve with a self-purging function as claimed in claim 2, characterized in that: The feed port (12) is adapted to fit the discharge port (11), a sealing valve plate (10) is provided at the feed port (12), and the sealing valve plate (10) is connected to the swing arm (7).

4. A swing valve with a self-purging function as claimed in claim 1, characterized in that: The connecting head (4) is hingedly connected to the rocker arm (5); the other side of the rocker arm (5) is rotatably connected to a rotating shaft (6); the rotating shaft (6) is rotatably connected to the upper valve seat (2); one end of the rotating shaft (6) passes through the upper valve seat (2) and extends into the lower valve body (1).

5. The swing valve with self-purging function as claimed in claim 1, characterized in that: A swing arm (7) is provided at one end of the rotating shaft (6). The swing arm (7) is fixedly connected to the rotating shaft (6). The swing arm (7) can control the sealing valve plate (10) to swing around the rotating shaft (6).

6. A swing valve with a self-purging function as claimed in claim 1, characterized in that: A compression spring (8) is provided at the connection between the swing arm (7) and the sealing valve plate (10).

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