Diaphragm structure of pneumatic control valve

Abstract

The utility model discloses a diaphragm structure of a pneumatic control valve. The diaphragm structure comprises an upper diaphragm piece, a lower installation seat is arranged at the bottom of the upper diaphragm piece, one end of a reinforcing arm is fixedly connected with a reinforcing ring, a fixing ring is arranged on the side of the upper diaphragm piece, and a lower diaphragm piece is arranged at the bottom of the upper diaphragm piece. The double-diaphragm piece structural design is adopted, the diaphragm piece is installed in the two sealing grooves during installation and can be integrally installed, the installation convenience is improved, meanwhile, the strip-shaped embedded groove is formed in the edge side of the upper diaphragm piece, the reinforcing arms and the reinforcing rings are arranged on the outer side of the upper installation base and the outer side of the lower installation base, and therefore the sealing performance of the diaphragm piece is improved. After the upper diaphragm piece is mounted between the upper mounting seat and the lower mounting seat, the reinforcing arm is arranged in the strip-shaped embedding groove, so that the overall strength of the upper diaphragm piece is enhanced, the reinforcing ring at one end of the reinforcing arm is arranged in the fixing ring, and when the side of the diaphragm is fixed through the fixing ring, due to the fact that the reinforcing ring is arranged in the fixing ring, the stability is high, and the service life of the diaphragm piece is prolonged. The supporting strength is high.

Description

Technical Field

[0001] The utility model relates to a diaphragm structure of an air-controlled valve, belonging to the technical field of valves. Background Art

[0002] Pneumatic control valves refer to various pneumatic components that control the pressure, flow and flow direction of airflow in pneumatic systems and ensure the normal operation of pneumatic actuators or mechanisms. Components that control and adjust compressed air pressure are called pressure control valves. Components that control and adjust the flow of compressed air are called flow control valves. Components that change and control the flow direction of airflow are called directional control valves. The Quick and Easy Automation Selection includes various SMC products. In addition to the above three types of control valves, there are also logic elements that can realize certain logical functions, including jet elements with no moving parts inside the components and pneumatic logic elements with moving parts. In terms of structural principle, logic elements are basically the same as directional control valves, but with smaller volume and diameter. They are generally used to realize the logical operation function of signals. With the miniaturization of pneumatic components and the large-scale application of PLC control in pneumatic systems, the application scope of pneumatic logic elements is gradually decreasing. According to the control method, pneumatic control can be divided into two categories: intermittent control and continuous control. In intermittent control systems, pressure control valves, flow control valves and directional control valves are usually used to implement program actions; in continuous control systems, in addition to pressure and flow control valves, servo and proportional control valves are also used to continuously control the system.

[0003] The solenoid valve diaphragm, also called the pulse valve diaphragm, is one of the accessories for the normal operation of the injection air circuit "switch" of the pulse bag dust collector cleaning system and the valve body. When the solenoid valve diaphragm in the prior art is in use, the strength of the diaphragm body is not enough, which will affect the service life of the diaphragm in the solenoid valve, and the positioning holes on the side of the diaphragm are not strengthened. The positioning holes are easily damaged under long-term pressurized fixation. Utility Model Content

[0004] The purpose of the utility model is to provide a diaphragm structure of an air-controlled valve to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A diaphragm structure of an air-controlled valve comprises an upper diaphragm member, a lower diaphragm member, an upper mounting seat and a lower mounting seat, wherein an upper mounting seat is arranged on the top of the upper diaphragm member, a lower mounting seat is arranged on the bottom of the upper diaphragm member, reinforcing arms are arranged on the sides of the upper mounting seat and the lower mounting seat, one end of the reinforcing arm is fixedly connected with a reinforcing ring, the top and bottom ends of the upper diaphragm member are arranged with a strip-shaped embedding groove, a fixing ring is arranged on the side of the upper diaphragm member, and the fixing ring is arranged at the end of the strip-shaped embedding groove, the reinforcing arm is placed inside the strip-shaped embedding groove, the reinforcing ring is inside the fixing ring, the bottom of the upper diaphragm member is arranged with a lower diaphragm member, and a rubber column is sleeved on the outside of the connecting rod.

[0007] In the above-mentioned diaphragm structure of an air-controlled valve, fixing holes are provided on both sides of the reinforcing arm, plastic plates are provided on both sides of the top of the strip-shaped embedding groove, limiting screws are threadedly provided on both sides of the top of the plastic plate, and the bottom end of the limiting screw passes through the plastic plate and is threadedly connected to the inside of the fixing hole.

[0008] In the above-mentioned diaphragm structure of the air-controlled valve, a plurality of limiting columns are evenly arranged on the top side of the lower mounting seat, a plurality of limiting holes are opened at the bottom end of the upper mounting seat, and the limiting columns are placed inside the limiting holes.

[0009] In the above-mentioned diaphragm structure of an air-controlled valve, a top groove is provided at the top center of the upper mounting seat, a locking bolt is fixedly connected to the top center of the lower mounting seat, and the top end of the locking bolt passes through the upper mounting seat and is placed inside the top groove.

[0010] In the above-mentioned diaphragm structure of the air-controlled valve, a gasket and a locking nut are arranged inside the top groove, and the top end of the locking bolt passes through the gasket and is threadedly sleeved with the locking nut.

[0011] In the above-mentioned diaphragm structure of an air-controlled valve, a metal inner plate is arranged at the center of the lower diaphragm member, a threaded mounting hole is opened inside the metal inner plate, a connecting rod is fixedly connected to the bottom end of the lower mounting seat, a threaded head is fixedly connected to the bottom end of the connecting rod, and the threaded head is threadedly connected to the inside of the threaded mounting hole.

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

[0013] The utility model discloses a diaphragm structure of an air-controlled valve, in which a lower diaphragm is connected to the bottom of an upper diaphragm by a connecting rod and a threaded head, and a double diaphragm structure design is adopted. During installation, the diaphragm is installed inside two sealing grooves and can be installed as a whole, thereby improving the convenience of installation. At the same time, the utility model also provides a strip-shaped embedded groove on the side of the upper diaphragm, and reinforcing arms and reinforcing rings are provided on the outer sides of the upper mounting seat and the lower mounting seat. When the upper diaphragm is installed between the upper mounting seat and the lower mounting seat, the reinforcing arm is placed inside the strip-shaped embedded groove, thereby strengthening the overall strength of the upper diaphragm, and the reinforcing ring at one end of the reinforcing arm is placed inside the fixing ring. When the side of the diaphragm is fixed by the fixing ring, since the reinforcing environmental protection is provided inside the fixing ring, the fixing strength is high, the installation force that can be supported is high, and the stability is strong after installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural schematic diagram of a diaphragm structure of an air-controlled valve of the utility model;

[0015] Figure 2 The utility model is a schematic diagram of the lower mounting seat structure of the diaphragm structure of the air control valve.

[0016] In the figure: 1. upper diaphragm member; 2. lower diaphragm member; 3. upper mounting seat; 4. strip embedded groove; 5. plastic plate; 6. fixing ring; 7. rubber column; 8. lower mounting seat; 9. top groove; 10. locking nut; 11. gasket; 12. reinforcing arm; 13. reinforcing ring; 14. locking bolt; 15. limiting column; 16. connecting rod; 17. metal inner plate; 18. threaded head. DETAILED DESCRIPTION

[0017] 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.

[0018] See also Figure 1-2 The utility model provides a technical solution for the diaphragm structure of an air-controlled valve:

[0019] A diaphragm structure of an air-controlled valve comprises an upper diaphragm member 1, a lower diaphragm member 2, an upper mounting seat 3 and a lower mounting seat 8, wherein the upper diaphragm member 1 is provided with an upper mounting seat 3 on the top, the lower mounting seat 8 is provided with a bottom of the upper diaphragm member 1, the sides of the upper mounting seat 3 and the sides of the lower mounting seat 8 are provided with reinforcing arms 12, one end of the reinforcing arm 12 is fixedly connected with a reinforcing ring 13, the top and bottom ends of the upper diaphragm member 1 are provided with a strip-shaped embedded groove 4, the side of the upper diaphragm member 1 is provided with a fixing ring 6, and the fixing ring 6 is arranged at the end of the strip-shaped embedded groove 4, the reinforcing arm 12 is arranged inside the strip-shaped embedded groove 4, the reinforcing ring 13 is arranged inside the fixing ring 6, the bottom of the upper diaphragm member 1 is provided with a lower diaphragm member 2, and the outer part of the connecting rod 16 is provided with a rubber column 7.

[0020] according to Figure 1 and Figure 2 As shown, the present application provides a diaphragm structure of an air-controlled valve. Specifically, fixing holes are provided on both sides of the reinforcing arm 12, plastic plates 5 are provided on both sides of the top of the strip-shaped embedding groove 4, and limit screws are threadedly provided on both sides of the top of the plastic plate 5, and the bottom end of the limit screw passes through the plastic plate 5 and is threadedly connected to the inside of the fixing hole.

[0021] according to Figure 1 and Figure 2 As shown, the present application provides a diaphragm structure of an air-controlled valve. Specifically, a plurality of limiting columns 15 are evenly arranged on the top side of the lower mounting seat 8, a plurality of limiting holes are opened at the bottom end of the upper mounting seat 3, and the limiting columns 15 are placed inside the limiting holes.

[0022] according to Figure 1 and Figure 2 As shown, the present application provides a diaphragm structure of an air-controlled valve. Specifically, a top groove 9 is provided at the top center of an upper mounting seat 3, a locking bolt 14 is fixedly connected at the top center of a lower mounting seat 8, and the top end of the locking bolt 14 passes through the upper mounting seat 3 and is placed inside the top groove 9.

[0023] according to Figure 1 and Figure 2 As shown, the present application provides a diaphragm structure of an air-controlled valve. Specifically, a gasket 11 and a locking nut 10 are provided inside a top groove 9 , and the top end of a locking bolt 14 passes through the gasket 11 and is threadedly sleeved with the locking nut 10 .

[0024] according to Figure 1 and Figure 2 As shown, the present application provides a diaphragm structure of an air-controlled valve. Specifically, a metal inner plate 17 is provided at the center of the lower diaphragm member 2, a threaded mounting hole is opened inside the metal inner plate 17, a connecting rod 16 is fixedly connected to the bottom end of the lower mounting seat 8, a threaded head 18 is fixedly connected to the bottom end of the connecting rod 16, and the threaded head 18 is threadedly connected to the inside of the threaded mounting hole.

[0025] Working principle: The utility model provides a diaphragm structure of an air-controlled valve. The utility model connects a lower diaphragm member 2 to an upper diaphragm member 1 at the bottom through a connecting rod 16 and a threaded head 18. A double diaphragm member structure design is adopted. During installation, the two sealing grooves installed inside the air-controlled valve can be installed as a whole, thereby improving the convenience of installation. At the same time, the utility model also provides a strip-shaped embedded groove 4 on the side of the upper diaphragm member 1, and the outer sides of the upper mounting seat 3 and the lower mounting seat 8 are provided with a reinforcing arm 12 and a reinforcing ring 13. When the upper diaphragm member 1 is installed between the upper mounting seat 3 and the lower mounting seat 8, the reinforcing arm 12 is placed inside the strip-shaped embedded groove 4 and is locked and fixed by a plastic plate 5, thereby strengthening the overall strength of the upper diaphragm member 1, and the reinforcing ring 13 at one end of the reinforcing arm 12 is placed inside the fixing ring 6. When the side of the diaphragm is fixed by the fixing ring 6, since the reinforcing ring 13 is provided inside the fixing ring 6, the structural fixing strength of the utility model is high, the installation force that can be supported is high, and the stability is strong after installation.

[0026] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. The specific embodiments described in this article are only used to illustrate the spirit of the utility model. The technicians in the technical field of the utility model can make various modifications or supplements to the specific embodiments described or replace them in a similar way, but they will not deviate from the spirit of the utility model or exceed the scope defined by the attached claims.

Claims

1. A diaphragm structure of an air-controlled valve, comprising an upper diaphragm member (1), a lower diaphragm member (2), an upper mounting seat (3) and a lower mounting seat (8), characterized in that: An upper mounting seat (3) is arranged at the top of the upper diaphragm member (1), a lower mounting seat (8) is arranged at the bottom of the upper diaphragm member (1), reinforcing arms (12) are arranged on the sides of the upper mounting seat (3) and the lower mounting seat (8), one end of the reinforcing arm (12) is fixedly connected to a reinforcing ring (13), the top and bottom ends of the upper diaphragm member (1) are provided with a strip-shaped embedded groove (4), a fixing ring (6) is arranged on the side of the upper diaphragm member (1), and the fixing ring (6) is arranged at the end of the strip-shaped embedded groove (4), the reinforcing arm (12) is placed inside the strip-shaped embedded groove (4), the reinforcing ring (13) is located inside the fixing ring (6), and the bottom of the upper diaphragm member (1) is provided with a lower diaphragm member (2).

2. The diaphragm structure of a gas-controlled valve according to claim 1, characterized in that: Fixing holes are provided on both sides of the reinforcing arm (12), and plastic plates (5) are provided on both sides of the top of the strip-shaped embedding groove (4). Limiting screws are threadedly provided on both sides of the top of the plastic plate (5), and the bottom end of the limiting screw passes through the plastic plate (5) and is threadedly connected to the inside of the fixing hole.

3. The diaphragm structure of a gas-controlled valve according to claim 1, characterized in that: A plurality of limiting columns (15) are evenly arranged on the top side of the lower mounting seat (8), a plurality of limiting holes are opened at the bottom end of the upper mounting seat (3), and the limiting columns (15) are placed inside the limiting holes.

4. The diaphragm structure of a gas-controlled valve according to claim 1, characterized in that: A top groove (9) is provided at the top center of the upper mounting seat (3), and a locking bolt (14) is fixedly connected to the top center of the lower mounting seat (8), and the top end of the locking bolt (14) passes through the upper mounting seat (3) and is placed inside the top groove (9).

5. The diaphragm structure of the air-controlled valve according to claim 4, characterized in that: A gasket (11) and a locking nut (10) are arranged inside the top groove (9), and the top end of the locking bolt (14) passes through the gasket (11) and is threadedly sleeved with the locking nut (10).

6. The diaphragm structure of a gas-controlled valve according to claim 1, characterized in that: A metal inner plate (17) is provided at the center of the lower diaphragm member (2), a threaded mounting hole is provided inside the metal inner plate (17), a connecting rod (16) is fixedly connected to the bottom end of the lower mounting seat (8), a threaded head (18) is fixedly connected to the bottom end of the connecting rod (16), and the threaded head (18) is threadedly connected to the inside of the threaded mounting hole, and a rubber column (7) is sleeved on the outside of the connecting rod (16).

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