Angular travel micro flow regulating valve

Abstract

The utility model relates to the technical field of regulating valves, in particular to an angular travel micro-flow regulating valve which comprises an air cylinder, a positioner installed at the upper end of the air cylinder and a pressure reducing valve installed at the upper left end of the air cylinder, a support is arranged at the lower end of the air cylinder, and a connecting shaft is arranged at the position, close to the air cylinder, in the support. A clamping block is installed at the lower end of the connecting shaft, a valve deck is installed at the lower end of the support, a valve body is installed at the lower end of the valve deck, a valve element rod which extends into the support and is connected with the clamping block is arranged in the valve body and the valve deck, and a valve seat is arranged at the bottom in the valve body. The thrust pad is designed and used for preventing the valve element rod from flying out. The sealing device is simple in structure, good in sealing effect and small in leakage rate due to the arrangement of the filler; a profiling V-shaped groove is designed in the valve element, so that the adjusting valve is high in adjusting precision, large in adjusting range and capable of accurately controlling fine and small flow.

Description

Technical Field

[0001] The utility model relates to the technical field of regulating valves, in particular to an angular stroke micro-flow regulating valve. Background Art

[0002] Control valves play a crucial role in the automated control of modern factories, where production depends on the correct distribution and control of flowing media. Existing quarter-turn control valves have complex structures, low adjustment accuracy, and a narrow adjustment range, making them incapable of precisely controlling even small flow rates. Utility Model Content

[0003] The utility model aims to provide an angular stroke small flow regulating valve.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] An angular stroke micro-flow regulating valve includes a cylinder, a positioner installed at the upper end of the cylinder, and a pressure reducing valve installed at the upper left end of the cylinder. A bracket is provided at the lower end of the cylinder, a connecting shaft is provided at the output end of the cylinder, a clamping block is provided at the lower end of the connecting shaft, a valve cover is provided at the lower end of the bracket, a valve body is provided at the lower end of the valve cover, a valve core rod extending into the bracket and connected to the clamping block is provided in the valve body and the valve cover, and a valve seat is provided at the inner bottom of the valve body.

[0006] Preferably, the valve cover is provided with a thrust pad near the valve body, and the valve cover is provided with a packing pressure plate, a packing gland, a packing spacer and packing in sequence from top to bottom near the valve core rod.

[0007] Preferably, a pin is provided at the connection between the valve cover and the valve seat, and the connecting shaft, the clamping block and the valve core rod are connected in sequence.

[0008] Preferably, the thrust pad is wide at the bottom and narrow at the top, and is used to prevent the valve core rod from flying out.

[0009] Preferably, a contoured V-shaped groove is provided on the outer circle of the valve core rod for regulating the flow during the switching process.

[0010] Preferably, a clamping groove is provided on the end wall of the connection between the valve seat and the valve core rod, which is used for clamping the valve core rod and for limiting the opening and closing of the valve core rod.

[0011] The utility model has at least the following beneficial effects:

[0012] 1. The thrust pad is used to prevent the valve core rod from flying out;

[0013] 2. A contoured V-shaped groove is provided at the bottom end wall of the valve core rod, which is used to connect with the opening of the valve seat. A hole is provided at the valve seat to form a gap with the valve core rod for regulating the flow during the switching process. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 It is a schematic diagram of the utility model.

[0016] In the figure: 1. Positioner; 2. Pressure reducing valve; 3. Cylinder; 4. Connecting shaft; 5. Clamp; 6. Bracket; 7. Packing plate; 8. Packing gland; 9. Packing spacer; 10. Packing; 11. Valve cover; 12. Thrust pad; 13. Pin; 14. Valve core rod; 15. Valve seat; 16. Valve body. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0018] See also Figure 1 The utility model provides a technical solution for an angular stroke micro flow regulating valve:

[0019] like Figure 1 As shown, the angular stroke micro flow regulating valve includes a cylinder 3, a positioner 1 installed at the upper end of the cylinder 3, a pressure reducing valve 2 installed at the upper left end of the cylinder 3, a bracket 6 installed at the lower end of the cylinder 3, a connecting shaft 4 installed at the output end of the cylinder 3, a clamping block 5 installed at the lower end of the connecting shaft 4, a valve cover 11 installed at the lower end of the bracket 6, a valve body 16 installed at the lower end of the valve cover 11, and a packing pressure plate 7, a packing gland 8, and a packing spacer 9 are installed in sequence from top to bottom near the valve core rod 14 of the valve cover 11. And packing 10, valve body 16, valve cover 11 is provided with valve core rod 14 extending into bracket 6 and connected to clamp block 5, connecting shaft 4, clamp block 5, valve core rod 14 are connected in sequence, valve body 16 is provided with valve seat 15 at the bottom, valve core rod 14 is provided with a contoured V-shaped notch at the bottom end wall, used to connect with the opening of valve seat 15, valve seat 15 is provided with a hole, and valve core rod 14 is provided with a gap to form a gap for regulating flow during the switching process;

[0020] A thrust pad 12 is provided on the valve cover 11 near the valve body 16. A pin 13 is provided at the connection between the valve cover 11 and the valve seat 15. The thrust pad 12 is wide at the bottom and narrow at the top. The thrust pad 12 is used to prevent the valve core rod 14 from flying out.

[0021] A clamping groove is provided on the end wall of the connection between the valve seat 15 and the valve core rod 14 at the bottom of the stroke, which is used to clamp the valve core rod 14, making it more convenient during assembly.

[0022] Working principle:

[0023] The valve core rod 14 is driven by the positioner 1, the pressure reducing valve 2 and the cylinder 3. When driving, the connecting shaft 4 and the clamping block 5 are driven first, and then the valve core rod 14 is driven to move. The valve core rod 14 cooperates between the valve body 16 and the valve seat 15. When moving, the gap is changed to control the flow rate.

[0024] The packing gland 8 , the packing spacer 9 , and the packing 10 are used to increase the sealing between the valve core stem 14 and the valve cover 11 , and the pin 13 increases the firmness of the connection between the valve seat 15 and the valve body 16 .

[0025] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and improvements are possible without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed for the present invention is defined by the appended claims and their equivalents.

Claims

1. An angular stroke micro-flow regulating valve, comprising a cylinder (3), a positioner (1) mounted on the upper end of the cylinder (3), and a pressure reducing valve (2) mounted on the upper left end of the cylinder (3), characterized in that: A bracket (6) is arranged at the lower end of the cylinder (3), a connecting shaft (4) is arranged at the output end of the cylinder (3), a clamping block (5) is arranged at the lower end of the connecting shaft (4), a valve cover (11) is arranged at the lower end of the bracket (6), a valve body (16) is arranged at the lower end of the valve cover (11), a valve core rod (14) extending into the bracket (6) and connected to the clamping block (5) is arranged in the valve body (16) and the valve cover (11), and a valve seat (15) is arranged at the bottom of the valve body (16).

2. The angular stroke micro flow regulating valve according to claim 1, characterized in that: The valve cover (11) is provided with a thrust pad (12) near the valve body (16), and the valve cover (11) is provided with a packing pressure plate (7), a packing pressure cover (8), a packing spacer (9) and a packing (10) in order from top to bottom near the valve core rod (14).

3. The angular stroke micro flow regulating valve according to claim 1, characterized in that: A pin (13) is provided at the connection between the valve cover (11) and the valve seat (15), and the connecting shaft (4), the clamping block (5) and the valve core rod (14) are connected in sequence.

4. The angular stroke micro flow regulating valve according to claim 2, characterized in that: The thrust pad (12) is wide at the bottom and narrow at the top, and is used to prevent the valve core rod (14) from flying out.

5. The angular stroke micro flow regulating valve according to claim 1, characterized in that: A contoured V-shaped groove is provided on the outer circle of the valve core rod (14) for regulating the flow rate during the switching process.

6. The angular stroke micro flow regulating valve according to claim 1, characterized in that: The end wall of the connection between the valve seat (15) and the valve core rod (14) is provided with a clamping groove, which is used for clamping the valve core rod (14) and for limiting the opening and closing of the valve core rod (14).

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