A high frequency piston cylinder

Abstract

The utility model relates to valve fittings technical field, especially a high frequency piston formula air cylinder, including air cylinder main part, telescopic link can shift setting on air cylinder main part, still be provided with the connecting device of being convenient for with valve rod connection on telescopic link, the mounting sleeve for installing on valve body is set up through the clamping device on air cylinder main part.

Description

Technical Field

[0001] This utility model relates to the field of valve fittings technology, and in particular to a high-frequency piston cylinder. Background Technology

[0002] Control valves are crucial process control components used in industrial automation systems to precisely regulate (control) the flow rate, pressure, temperature, or level of media (liquids, gases, steam, etc.) in pipelines. Control valves are typically controlled by a cylinder connected to the valve stem. If the cylinder malfunctions, the user cannot effectively control the valve, requiring replacement or repair. However, control valve stems vary in length, and different cylinders may not be compatible with damaged valves. Therefore, maintenance and replacement require carrying multiple cylinders, which is inconvenient. Utility Model Content

[0003] Therefore, in view of the above problems, this utility model proposes a high-frequency piston cylinder.

[0004] To achieve the above objectives, the present invention provides a high-frequency piston cylinder, including a cylinder body, a telescopic rod slidably disposed on the cylinder body, and a connecting device for connecting to a valve stem on the telescopic rod. The cylinder body is provided with a mounting sleeve for mounting on a valve body via a locking device.

[0005] A further improvement is that the engaging device includes: mounting rods symmetrically arranged on the cylinder body and positioning rods symmetrically arranged on the mounting sleeve, with an adjustment and positioning device provided between the mounting rods and the positioning rods.

[0006] A further improvement is that the adjustment and positioning device includes: several slots on the positioning rod, a positioning block on the mounting rod that matches the slots, a first threaded hole on the positioning rod, a through hole on the positioning rod that passes through several slots in sequence and corresponds to the first threaded hole, and a positioning screw locked in the first threaded hole.

[0007] A further improvement is that the positioning block has a countersunk hole corresponding to the positioning screw.

[0008] A further improvement is that the positioning rod is also equipped with a limiting block to prevent the positioning block from sliding out of the slot during installation.

[0009] A further improvement is that the connecting device includes: a floating joint for connecting to the valve stem, a locking groove formed on the telescopic rod, and two clamping plates symmetrically arranged between the telescopic rod and the floating joint, wherein the clamping plates are matched with the floating joint and the locking groove.

[0010] A further improvement is that each mounting rod is provided with a side plate, each clamping plate is provided with an extension plate, and the extension plate is provided with a guide groove that matches the side plate.

[0011] A further improvement is that an opening gauge is provided on the side plate, and a pointer is provided on the clamping plate.

[0012] A further improvement is that the mounting rod is also provided with several second threaded holes.

[0013] A further improvement is that a lifting ring is also provided on the cylinder body.

[0014] The advantages and beneficial effects of this utility model are as follows:

[0015] With a simple structure and convenient use, the cylinder body is connected to the mounting sleeve through a snap-fit ​​device, which allows the user to adjust the distance between the cylinder body and the mounting sleeve according to the actual length of the valve stem, thereby adapting to valves of various sizes, improving the cylinder's compatibility, installation efficiency, and ease of use. Attached Figure Description

[0016] Figure 1 This is a front view schematic diagram of a high-frequency piston cylinder according to the present invention;

[0017] Figure 2 This is a schematic diagram of a high-frequency piston cylinder mounting sleeve and mounting rod of the present invention.

[0018] Figure 3 This is an enlarged schematic diagram of part A of a high-frequency piston cylinder according to this utility model;

[0019] In the diagram: 101, cylinder body; 102, telescopic rod; 103, mounting sleeve; 104, mounting rod; 105, positioning rod; 106, slot; 107, positioning block; 108, first threaded hole; 109, through hole; 110, positioning screw; 111, countersunk hole; 112, limit block; 113, floating joint; 114, clamping plate; 115, side plate; 116, extension plate; 117, guide groove; 118, opening gauge; 119, pointer; 120, second threaded hole; 121, lifting ring. Detailed Implementation

[0020] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0021] like Figures 1-3As shown, a high-frequency piston cylinder includes a cylinder body 101 and a telescopic rod 102 slidably disposed on the cylinder body 101. The telescopic rod 102 is also provided with a connecting device for connecting to a valve stem. The cylinder body 101 is provided with a mounting sleeve 103 for mounting on a valve body via a locking device.

[0022] To facilitate connection with the mounting sleeve 103, the engaging device includes: mounting rods 104 symmetrically arranged on the cylinder body 101 and positioning rods 105 symmetrically arranged on the mounting sleeve 103, with an adjustment and positioning device provided between the mounting rods 104 and the positioning rods 105.

[0023] To facilitate adjustment of the relative position between the cylinder body 101 and the mounting sleeve 103, the adjustment and positioning device includes: several slots 106 formed on the positioning rod 105; a positioning block 107 on the mounting rod 104 that matches the slots 106; a first threaded hole 108 formed on the positioning rod 105; a through hole 109 formed on the positioning rod 105 that passes through several slots 106 in sequence and corresponds to the first threaded hole 108; and a positioning screw 110 locked in the first threaded hole 108.

[0024] To improve positioning stability, the positioning block 107 is provided with a countersunk hole 111 corresponding to the positioning screw 110.

[0025] To facilitate the installation of the mounting rod 104 on the positioning rod 105, the positioning rod 105 is also provided with a limiting block 112 to prevent the positioning block 107 from sliding out of the slot 106 during installation.

[0026] To facilitate connection with the valve stem and improve stability when using the cylinder, and to facilitate high-frequency use, the connection device includes: a floating joint 113 for connecting with the valve stem, a locking groove on the telescopic rod 102, and two clamping plates 114 symmetrically arranged between the telescopic rod 102 and the floating joint 113, wherein the clamping plates 114 are matched with the floating joint 113 and the locking groove.

[0027] To further improve the stability of the cylinder during use, each mounting rod 104 is provided with a side plate 115, and each clamping plate 114 is provided with an extension plate 116. The extension plate 116 is provided with a guide groove 117 that matches the side plate 115.

[0028] To facilitate observation of the valve opening status, an opening gauge 118 is provided on the side plate 115, and a pointer 119 is provided on the clamping plate 114.

[0029] To facilitate the installation of components that drive the cylinder on the mounting rod 104, the mounting rod 104 is also provided with several second threaded holes 120.

[0030] To facilitate the movement of the valve equipped with the cylinder, a lifting ring 121 is also provided on the cylinder body 101.

[0031] Working principle: During installation, first install the mounting sleeve 103 on the valve body, then select a suitable height, insert the positioning block 107 into the slot 106, and then lock the positioning screw 110 so that it abuts against the recessed hole 111 to prevent the mounting rod 104 from disengaging from the positioning rod 105, and the installation is completed.

[0032] When in use, the telescopic rod 102 moves, and through the action of the clamping plate, it synchronously drives the floating joint 113 and the valve stem to move up and down, thereby realizing the control of the valve opening.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions above are only illustrative of the principles of this utility model. Various changes and modifications may be made to this utility model without departing from the spirit and scope of this utility model. All such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A high-frequency piston cylinder, comprising a cylinder body and a telescopic rod slidably disposed on the cylinder body, wherein the telescopic rod is further provided with a connecting device for easy connection with a valve stem, characterized in that: The cylinder body is provided with a mounting sleeve for mounting on the valve body via a locking device.

2. A high-frequency piston cylinder according to claim 1, characterized in that: The engaging device includes: mounting rods symmetrically arranged on the cylinder body and positioning rods symmetrically arranged on the mounting sleeve, with an adjustment and positioning device provided between the mounting rods and the positioning rods.

3. A high-frequency piston cylinder according to claim 2, characterized in that: The adjustment and positioning device includes: several slots on the positioning rod, a positioning block on the mounting rod that matches the slots, a first threaded hole on the positioning rod, a through hole on the positioning rod that passes through several slots in sequence and corresponds to the first threaded hole, and a positioning screw locked in the first threaded hole.

4. A high-frequency piston cylinder according to claim 3, characterized in that: The positioning block has a countersunk hole corresponding to the positioning screw.

5. A high-frequency piston cylinder according to claim 3, characterized in that: The positioning rod is also equipped with a limiting block to prevent the positioning block from sliding out of the slot during installation.

6. A high-frequency piston cylinder according to claim 2, characterized in that: The connecting device includes: a floating joint for connecting to the valve stem, a locking groove on the telescopic rod, and two clamping plates symmetrically arranged between the telescopic rod and the floating joint, wherein the clamping plates are matched with the floating joint and the locking groove.

7. A high-frequency piston cylinder according to claim 6, characterized in that: Each mounting rod is provided with a side plate, and each clamping plate is provided with an extension plate, the extension plate having a guide groove that matches the side plate.

8. A high-frequency piston cylinder according to claim 7, characterized in that: An opening gauge is provided on the side plate, and a pointer is provided on the clamping plate.

9. A high-frequency piston cylinder according to claim 2, characterized in that: The mounting rod is also provided with several second threaded holes.

10. A high-frequency piston cylinder according to claim 1, characterized in that: The cylinder body is also equipped with a lifting ring.

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