Valve core and valve seat concave-convex surface matching angular travel regulating valve

Abstract

The utility model relates to a valve core and valve seat concave-convex surface matching angular travel regulating valve, which comprises a valve body, a valve core, a valve seat concave-convex surface matching angular travel regulating valve, a valve core, a valve seat concave-convex surface matching angular travel regulating valve, a valve core and a valve seat concave-convex surface matching angular travel regulating valve, the valve cover is arranged at the top of the valve body, and the valve rod is rotationally arranged in the valve cover; the valve element is arranged at the end, located in the inner cavity, of the valve rod. The valve seat is arranged in the valve body and makes contact with the bottom of the valve element. A first circulation hole is formed in the valve element in a penetrating mode. A second circulating hole is formed in the valve seat in a penetrating manner; according to the scheme, the valve rod is driven by the executing mechanism to rotate, the valve element is driven to rotate, and when the first circulating hole and the second circulating hole rotate to be in the coinciding state, a medium can enter from the inlet and be discharged from the outlet; when the first circulation hole and the second circulation hole rotate to a staggered state, a sealing surface is formed between the valve element and the valve seat, and the valve is closed; and the executing mechanism only needs to rotate, so that the requirement on the executing mechanism is reduced.

Description

Technical Field

[0001] The utility model relates particularly to an angular stroke regulating valve with a valve core and a valve seat with concave and convex surfaces matched. Background Art

[0002] Traditional control valves are linear valves, with their spools moving in a straight line, regulating flow by changing the flow area between the spool and the valve seat. While they offer advantages such as high regulation accuracy and minimal leakage, they also require large actuator thrust and experience slow response. For harsh operating conditions with high differential pressures, improperly designed linear control valves can cause spool vibration and disengagement, placing higher demands on actuator output force and guide structures.

[0003] In summary, how to avoid valve core vibration and falling off and reduce the requirements for the actuator has become an urgent problem that researchers in this field need to solve. Utility Model Content

[0004] The technical problem to be solved by the utility model is: how to avoid the phenomenon of valve core vibration and falling off, and reduce the requirements of the actuator;

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] The utility model is an angular stroke regulating valve with a valve core and a valve seat with concave and convex surfaces, comprising: a valve body, an inlet is formed on its side, an outlet is formed on its bottom, and an inner cavity communicating with the inlet and the outlet; a valve cover is arranged on the top of the valve body, and a valve stem is rotatably arranged in the valve cover; a valve core, and the valve core is provided at one end of the valve stem located in the inner cavity; a valve seat is arranged in the valve body and contacts the bottom of the valve core; wherein a first flow hole is formed through the valve core; and a second flow hole is formed through the valve seat; when the valve stem drives the valve core to rotate until the first flow hole and the second flow hole are connected, the valve is opened;

[0007] Compared with traditional valves that drive the valve core to rise and fall, the valve stem in this solution rotates under the drive of the actuator, driving the valve core to rotate. When the first flow hole and the second flow hole rotate to the overlapping state, the medium can enter from the inlet and be discharged from the outlet; when the first flow hole and the second flow hole rotate to the staggered state, a sealing surface is formed between the valve core and the valve seat, and the valve is closed; the actuator only needs to perform a rotation operation, which reduces the requirements for the actuator.

[0008] In order to limit the vertical axis movement of the valve seat, the utility model adopts a flow sleeve arranged between the valve cover and the valve seat;

[0009] A flow window is provided on the flow sleeve. When the medium passes through the flow window, the medium is counteracted, reducing the impact force. The top of the flow sleeve contacts the valve cover, and the bottom contacts the valve seat, pressing the valve seat onto the valve body, limiting the upper and lower axis movement of the valve seat. In this way, the valve core and the valve seat will not vibrate, preventing vibration of the entire valve structure.

[0010] In order to achieve the positioning between the valve core and the valve seat, improve the sealing between the valve core and the valve seat, and reduce the internal leakage, the utility model adopts the upper surface of the valve seat to be provided with an annular groove and a central groove; the outer edge bottom of the valve core is provided with a positioning ring matching the annular groove; the bottom center of the valve core is provided with a central ring matching the central groove;

[0011] In this solution, the ring groove cooperates with the positioning ring, and the center ring cooperates with the center groove, so that the valve seat and the valve core are sealed through the concave and convex surfaces, which improves the sealing performance of the valve and reduces the internal leakage of the valve.

[0012] In order to explain how the valve core is connected to the valve stem and how to reduce the friction of the valve core during angular travel, the utility model adopts a spline groove connected to the end of the valve stem at the center of the upper surface of the valve core; a friction-reducing groove is opened upward at the center of the lower surface of the valve core;

[0013] In this solution, transmission is achieved between the valve stem and the valve core through the cooperation of the spline groove. The contact area between the valve core and the valve seat is reduced by providing a friction-reducing groove, the sealing pressure ratio is increased, and the sealing performance between the valve seat and the valve core is improved.

[0014] The beneficial effects of the present invention: The present invention is an angular stroke regulating valve in which the concave and convex surfaces of the valve core and valve seat are matched. The valve stem in this scheme rotates under the drive of the actuator, driving the valve core to rotate. When the first flow hole and the second flow hole are rotated to the overlapping state, the medium can enter from the inlet and be discharged from the outlet; when the first flow hole and the second flow hole are rotated to the staggered state, a sealing surface is formed between the valve core and the valve seat, and the valve is closed; the actuator only needs to perform a rotating operation, which reduces the requirements for the actuator. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 It is the matching diagram of valve seat and valve core;

[0018] Figure 3 It is a structural diagram of the valve seat;

[0019] In the figure: 1-valve body, 11-inlet, 12-outlet, 13-inner cavity, 2-valve cover, 3-valve stem, 4-valve core, 41-first flow hole, 42-positioning ring, 43-center ring, 44-spline groove, 45-friction reduction groove, 5-valve seat, 51-second flow hole, 52-ring groove, 53 center groove, 6-flow sleeve. DETAILED DESCRIPTION

[0020] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.

[0021] like Figure 1-3 As shown, the utility model is an angular stroke regulating valve with a valve core and a valve seat with concave and convex surfaces, comprising: a valve body 1, with an inlet 11 formed on its side, an outlet 12 formed on its bottom, and an inner cavity 13 communicating with the inlet 11 and the outlet 12; a valve cover 2, which is arranged on the top of the valve body 1, and a valve stem 3, which is rotatably arranged in the valve cover 2; a valve core 4, with the valve core 4 being provided at one end of the valve stem 3 located in the inner cavity 13; a valve seat 5, which is arranged in the valve body 1 and contacts the bottom of the valve core 4; wherein a first flow hole 41 is formed through the valve core 4; and a second flow hole 51 is formed through the valve seat 5; when the valve stem 3 drives the valve core 4 to rotate until the first flow hole 41 and the second flow hole 51 are connected, the valve is opened;

[0022] Compared with traditional valves that drive the valve core to rise and fall, the valve stem 3 in this solution rotates under the drive of the actuator, driving the valve core 4 to rotate. When the first flow hole 41 and the second flow hole 51 rotate to the overlapping state, the medium can enter from the inlet 11 and be discharged from the outlet 12; when the first flow hole 41 and the second flow hole 51 rotate to the staggered state, a sealing surface is formed between the valve core 4 and the valve seat 5, and the valve is closed; the actuator only needs to perform a rotation operation, which reduces the requirements for the actuator.

[0023] like Figure 1 As shown, in order to limit the vertical axis movement of the valve seat, the utility model adopts a flow sleeve 6 provided between the valve cover 2 and the valve seat 5;

[0024] A flow window is provided on the flow sleeve 6. When the medium passes through the flow window, the medium is counteracted, reducing the impact force. The top of the flow sleeve 6 contacts the valve cover 2, and the bottom contacts the valve seat 5, pressing the valve seat 5 onto the valve body 1, limiting the upper and lower axial movement of the valve seat 5, so that the valve core 4 and the valve seat 5 will not vibrate, preventing vibration of the entire valve structure.

[0025] like Figure 2-3As shown, in order to achieve positioning between the valve core and the valve seat, improve the sealing between the valve core and the valve seat, and reduce internal leakage, the utility model adopts the valve seat 5 to be provided with an annular groove 52 and a center groove 53 on the upper surface; the outer edge bottom of the valve core 4 is provided with a positioning ring 42 that matches the annular groove 52; and the bottom center of the valve core 4 is provided with a center ring 43 that matches the center groove 53.

[0026] In this solution, the annular groove 52 cooperates with the positioning ring 42, and the center ring 43 cooperates with the center groove 53, so that the valve seat 5 and the valve core 4 are sealed by the concave and convex surfaces, thereby improving the valve sealing and reducing the internal leakage of the valve.

[0027] like Figure 2 As shown, in order to illustrate how the valve core is connected to the valve stem and how to reduce the friction of the valve core during angular travel, the utility model adopts a spline groove 44 connected to the end of the valve stem 3 at the center of the upper surface of the valve core 4; a friction-reducing groove 45 is opened upward at the center of the lower surface of the valve core 4;

[0028] In this solution, transmission is achieved between the valve stem 3 and the valve core 4 through the cooperation of the spline groove 44. By providing the friction-reducing groove 45, the contact area between the valve core 4 and the valve seat 5 is reduced, the sealing pressure ratio is increased, and the sealing performance between the valve seat 5 and the valve core 4 is improved.

[0029] Based on the above-mentioned ideal embodiment of the present invention, and in accordance with the above description, relevant personnel can make various changes and modifications without departing from the technical scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, but must be determined according to the scope of the claims.

Claims

1. The concave and convex surfaces of the valve core and valve seat are matched with the angular stroke regulating valve, which is characterized by: include: The valve body has an inlet on its side, an outlet at its bottom, and an inner cavity communicating with the inlet and the outlet; A valve cover is provided on top of the valve body. a valve stem rotatably disposed within the valve cover; A valve core is provided at one end of the valve stem located in the inner cavity; a valve seat, which is disposed in the valve body and contacts the bottom of the valve core; Wherein, a first flow hole is formed through the valve core; A second flow hole is formed through the valve seat; When the valve stem drives the valve core to rotate until the first flow hole and the second flow hole are in a communicating state, the valve opens.

2. The angle-stroke regulating valve with concave-convex surface matching of the valve core and valve seat according to claim 1, characterized in that: A flow sleeve is arranged between the valve cover and the valve seat.

3. The angle-stroke regulating valve with concave-convex surface matching of the valve core and valve seat according to claim 1, characterized in that: The upper surface of the valve seat is provided with an annular groove and a central groove; A positioning ring matching the annular groove is provided at the bottom of the outer edge of the valve core; A center ring matching the center groove is provided at the bottom center of the valve core.

4. The angular stroke regulating valve with concave and convex surfaces of the valve core and valve seat according to claim 3, characterized in that: A spline groove connected to the end of the valve stem is provided at the center of the upper surface of the valve core; A friction reducing groove is opened upward at the center of the lower surface of the valve core.

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