Dual valve group

Abstract

The utility model belongs to valve technical field discloses double valve group, including the valve group of symmetrical setting, each valve group includes cylinder body, installs left end cover and right end cover of both ends of cylinder body, the cavity structure of piston and piston rod in built -in cylinder body, is installed with connecting plate on the cylinder body, and is equipped with two air holes that communicate with the inside of cylinder body on the connecting plate, is installed with solenoid valve and silencer on the connecting plate, the outer periphery of piston is equipped with support ring, packing and sealing ring, and piston rod penetrates left end cover place, and is equipped with the bushing, left end cover and right end cover are fixedly connected with cylinder body through fastening bolt solenoid valve is connected two air holes of connecting plate respectively through gas circuit pipeline, and the direction of compressed air's in and out can be controlled. The utility model through the cooperation of symmetrical valve group structure, integrated gas circuit and synchronous control circuit, realize millisecond level synchronous action of double station detection unit, solved traditional equipment response delay and data comparison not intuitive problem, and can improve detection efficiency significantly.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a dual-valve assembly. Background Technology

[0002] A dual valve manifold (DBB) is a safety isolation device used in piping or equipment systems. Its core function is to block the flow of media through double sealing and to provide a vent between the two shut-off valves to ensure operational safety.

[0003] Existing industrial testing devices mostly use a single testing unit for individual testing, which results in low testing efficiency and unintuitive comparative data. Traditional pneumatic testing equipment has a complex structural design, and the linkage control of solenoid valves and actuators has a response delay. Furthermore, it lacks the function of real-time data comparison between standard parts and test parts. Although some testing devices have a dual-station structure, they have the following problems: 1) The two testing units work independently and cannot achieve synchronous comparison; 2) The pneumatic system design is redundant, resulting in high maintenance costs. Therefore, we propose a dual-valve group. Summary of the Invention

[0004] To address the technical problems existing in the current testing equipment described in the background section, this utility model provides the following technical solution: The dual-valve assembly includes symmetrically arranged valve groups. Each valve group includes a cylinder body, a left end cap and a right end cap installed at both ends of the cylinder body, a cavity structure containing a piston and piston rod inside the cylinder body, a connecting plate installed on the cylinder body, and two air holes communicating with the inside of the cylinder body on the connecting plate. A solenoid valve and a muffler are installed on the connecting plate.

[0005] As a technical solution of the dual valve group of this utility model, the piston is provided with a support ring, a sealing gasket and a sealing ring on its outer periphery, and the piston rod passes through the left end cover and is provided with a bushing.

[0006] As a technical solution of the dual valve group of this utility model, the left end cover and the right end cover are fixedly connected to the cylinder body by fastening bolts.

[0007] As a technical solution of the dual-valve assembly of this utility model, the solenoid valve is connected to two air holes of the connecting plate through an air passage pipe, and can control the direction of compressed air in and out.

[0008] As a technical solution of the dual valve group described in this utility model, the solenoid valve of the valve group adopts a synchronous control circuit.

[0009] As a technical solution of the dual valve group of this utility model, the muffler is installed at the end of the exhaust channel of the connecting plate.

[0010] Compared with the prior art, the present invention has at least the following beneficial effects: 1. This utility model achieves millisecond-level synchronous operation of dual-station detection units through the coordinated use of symmetrical valve group structure, integrated air circuit and synchronous control circuit, which solves the problems of response delay and unintuitive data comparison in traditional equipment, and can significantly improve detection efficiency.

[0011] 2. This utility model, through the combination of multiple sealing design, modular assembly and optimized gas path layout, can significantly reduce the risk of leakage and component wear, thereby reducing the maintenance frequency. At the same time, combined with the silencer design, it can further meet environmental protection and safety requirements. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein: Figure 1 This is a cross-sectional structural diagram of the present invention.

[0013] Figure 2 This is a schematic diagram of the connection structure between the connecting plate and the solenoid valve of this utility model.

[0014] Figure 3 This is a schematic diagram of the cylinder body of this utility model assembled onto the connecting plate.

[0015] Explanation of reference numerals in the attached figures: In the diagram: 1. Left end cap; 2. Bushing; 3. Piston rod; 4. Piston; 5. Cylinder body; 6. Support ring; 7. Right end cap; 8. Sealing gasket; 9. Sealing ring; 10. Connecting plate; 11. Solenoid valve; 12. Silencer. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0018] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0019] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0020] Reference Figures 1-3 The system provides a dual-valve assembly, which includes symmetrically arranged valve groups. Each valve group includes a cylinder body 5, a left end cover 1 and a right end cover 7 installed at both ends of the cylinder body 5, a piston 4 built into the cylinder body 5, and a piston rod 3 cavity structure. A connecting plate 10 is installed on the cylinder body 5, and the connecting plate 10 has two air holes communicating with the inside of the cylinder body 5 (the air holes are a compressed air source hole and an exhaust channel hole, respectively). A solenoid valve 11 and a muffler 12 are installed on the connecting plate 10. In application, the symmetrical valve group design and the integrated air circuit of the connecting plate 10 simplify the air circuit layout, reduce the number of pipe connection points, reduce the risk of leakage and maintenance costs. At the same time, the solenoid valve 11 and the muffler 12 are directly installed on the connecting plate 10, which shortens the air circuit response time and improves the synchronization of the actuator action.

[0021] Reference Figure 1 The piston 4 is fitted with a support ring 6, a sealing gasket 8 (such as a fluororubber sealing gasket), and a sealing ring 9 (such as an O-ring). The piston rod 3 passes through the left end cover 1 and is fitted with a bushing 2 (such as a copper bushing). In application, the triple combination of the support ring 6, the sealing gasket 8, and the sealing ring 9 enhances the sealing reliability and prevents media leakage. At the same time, the design of the bushing 2 reduces the frictional wear between the piston rod 3 and the left end cover 1, extends the service life of the components, and ensures the smoothness of the movement.

[0022] Reference Figure 1 The left end cover 1 and the right end cover 7 are fixedly connected to the cylinder body 5 by fastening bolts. In application, the modular assembly design facilitates quick disassembly and maintenance, reduces downtime, and the fastening bolt connection ensures the sealing of the cylinder body 5, adapting to the requirements of high-pressure working conditions.

[0023] Reference Figure 2 and Figure 3The solenoid valve 11 is connected to two air holes of the connecting plate 10 through air passage pipes. The solenoid valve 11 is connected to the air holes through quick-connect fittings and can control the direction of compressed air in and out. In application, the solenoid valve 11 accurately controls the direction of compressed air in and out, realizes rapid opening and closing of the valve group, so as to reduce response delay and improve detection efficiency.

[0024] Reference Figure 2 The solenoid valve 11 of the valve group adopts a synchronous control circuit. The coil of the solenoid valve 11 is connected in parallel to the same external PLC output module. The synchronization error of the control signal is ≤1ms, ensuring that the opening and closing actions of the two valve groups are completely consistent. In the application, the solenoid valve 11 is driven synchronously by the circuit to ensure real-time comparison between the standard part and the test part, and improves the intuitiveness of the data. At the same time, it solves the problem of the two detection units working independently.

[0025] Reference Figure 2 The muffler 12 is installed at the end of the exhaust channel of the connecting plate 10. The muffler 12 adopts a porous sintered copper structure and the noise reduction is ≥15dB. In application, the muffler design at the end of the exhaust channel reduces the working noise, meets the industrial environment safety standards, and improves the operating experience.

[0026] The working principle of this utility model is as follows: System startup preparation operation: First, connect the external air source (0.6-0.8MPa) to the air hole (compressed air source hole) of the connecting plate 10, and then the external PLC outputs 24V DC to the solenoid valve 11 synchronous control circuit. Valve opening and closing operation: Valve opening operation: When the external PLC sends a high-level signal, the solenoid valve 11 will switch to the left position in sync, compressed air will enter the right chamber of the cylinder 5, the piston 4 will move to the left, and the valve will open. Door closing operation: When the external PLC sends a low-level signal, the solenoid valve 11 switches to the right position, the gas enters the left chamber, the piston 4 moves to the right to reset, the valve closes, and the exhaust gas is discharged through the silencer 12. Safety inspection and maintenance operation: When detecting leakage, after closing the valve, connect the pressure gauge through the vent of the connecting plate 10. If the pressure drop is ≤0.01MPa within a certain period of time (e.g., 5 minutes), it is qualified. During maintenance, regularly disassemble the bushing 2 for lubrication and check the wear of the sealing ring 9.

[0027] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A dual-valve assembly, characterized in that: The valve group includes symmetrically arranged valve groups. Each valve group includes a cylinder (5), a left end cap (1) and a right end cap (7) installed at both ends of the cylinder (5), a piston (4) built into the cylinder (5), and a cavity structure for the piston rod (3). A connecting plate (10) is installed on the cylinder (5), and the connecting plate (10) is provided with two air holes communicating with the inside of the cylinder (5). A solenoid valve (11) and a muffler (12) are installed on the connecting plate (10).

2. The dual-valve assembly according to claim 1, characterized in that: The piston (4) is fitted with a support ring (6), a sealing gasket (8) and a sealing ring (9) on its outer periphery, and the piston rod (3) passes through the left end cap (1) and is provided with a bushing (2).

3. The dual-valve assembly according to claim 1, characterized in that: The left end cap (1) and the right end cap (7) are fixedly connected to the cylinder body (5) by fastening bolts.

4. The dual-valve assembly according to claim 1, characterized in that: The solenoid valve (11) is connected to two air holes of the connecting plate (10) through an air passage pipe, and can control the direction of compressed air in and out.

5. The dual-valve assembly according to claim 1, characterized in that: The solenoid valve (11) of the valve group adopts a synchronous control circuit.

6. The dual-valve assembly according to claim 1, characterized in that: The muffler (12) is installed at the end of the exhaust channel of the connecting plate (10).

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