Control valve with automatic flow adjusting function

Abstract

The utility model belongs to the technical field of valves, and particularly relates to a control valve with an automatic flow regulation function, which is characterized in that a valve rod is mounted in a valve body, a conical valve clack is arranged at the lower end of the valve rod, a water inlet, a water outlet and a flow passage are respectively arranged in the valve body, and a flow regulation part is movably arranged at the lower end of the conical valve clack; a flow adjusting piece is installed at the upper end of the valve body, a flow adjusting opening is formed in the side face of the flow adjusting piece, a lower end cover is installed at the lower end of the valve body, and a spring is connected between the lower end of the flow adjusting piece and the lower end cover in an abutting mode. The flow adjusting piece moves downwards under pressure, the spring is compressed, the flow adjusting opening becomes small, the flow at the water outlet keeps constant and does not change suddenly, when the pressure at the water inlet returns to normal, the spring will push the flow adjusting piece to move and reset automatically, and therefore the automatic balance adjusting effect of the flow of the valve body is achieved, the structure is simple, and operation is convenient. And the cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a control valve with an automatic flow regulation function. Background Art

[0002] Usually, during the operation of air conditioning and heating systems, there is a common phenomenon of hydraulic imbalance in the medium in the pipelines. That is, there is a discrepancy between the actual flow rate of the medium in the pipelines at the user end of the heating or cooling system and the design flow rate. This phenomenon will cause uneven heating and cooling in the building, unstable and inaccurate temperature control, which not only fails to achieve the purpose of regulating temperature and improving physical sensation, but also causes huge energy waste.

[0003] Therefore, in the prior art, a flow control valve is designed to keep the flow through the valve constant. For example, Chinese utility model patent number CN03244608.X discloses a flow control valve. However, the structure is relatively complex, and thus further improvements are needed. Utility Model Content

[0004] The purpose of the utility model is to provide a control valve with an automatic flow regulation function, which solves the problem of the complex structure of the existing valve through a flow regulation component.

[0005] The purpose of the present utility model is achieved as follows: a control valve with an automatic flow regulation function, comprising a valve body, a valve stem installed in the valve body, a conical valve disc provided at the lower end of the valve stem, a water inlet and a water outlet respectively provided at both ends of the valve body, an overflow channel provided between the water inlet and the water outlet, a partition provided in the overflow channel, an annular abutment platform for the conical valve disc to abut against the middle part of the partition, an overflow hole provided in the annular abutment platform, a flow regulating member movably provided at the lower end of the conical valve disc, a flow regulating port provided on the side of the flow regulating member, a lower end cover installed at the lower end of the valve body, a spring abutting between the lower end of the flow regulating member and the lower end cover.

[0006] Preferably, a screw is provided at the lower end of the valve stem, and a screw hole cooperating with the screw is provided in the conical valve disc.

[0007] Preferably, a sealing ring is installed on the upper end surface of the conical valve disc, and a fixing plate is installed on the upper end surface of the sealing ring.

[0008] Preferably, the flow regulating member is provided with the flow hole, and the diameter of the sealing ring is larger than the diameter of the flow hole so as to abut against the upper end surface of the annular abutment platform to close the flow hole.

[0009] Preferably, the flow regulating port includes a square hole and a triangular hole.

[0010] Preferably, a detection port is opened on the side of the valve body, and a temperature and pressure sensor is installed in the detection port.

[0011] Preferably, the partition includes an upper check portion and a lower check portion, the upper check portion is located on a side close to the water inlet, and the lower check portion is located on a side close to the water outlet.

[0012] Compared with the prior art, the present invention has the following outstanding and beneficial technical effects:

[0013] The utility model adopts the design of the flow regulating member, so that in actual use, when the pressure at the water inlet is greater than the pressure at the water outlet, the flow regulating member moves downward under pressure and the spring is compressed, so that the flow regulating port becomes smaller, thereby keeping the flow at the water outlet constant and preventing sudden changes. When the pressure at the water inlet returns to normal, the spring will push the flow regulating member to move and automatically reset, thereby achieving an automatic balancing and regulating effect of the valve body flow. The structure is simple and the cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0015] Figure 2 It is a schematic cross-sectional structural diagram of the present utility model.

[0016] Figure 3 This is a schematic diagram of the exploded structure of parts of the utility model.

[0017] Figure 4 Schematic diagram of the structure of the flow regulating component.

[0018] Figure 5 It is a schematic diagram of the cross-sectional structure of the valve body.

[0019] Figure markings: 1-valve body; 2-valve stem; 3-conical valve disc; 4-water inlet; 5-water outlet; 6-flow channel; 7-partition; 8-annular abutment; 9-flow hole; 10-flow adjustment member; 11-flow adjustment port; 12-lower end cover; 13-spring; 14-screw; 15-screw hole; 16-sealing ring; 17-fixing plate; 18-square hole; 19-triangular hole; 20-detection port; 21-temperature and pressure sensor; 22-upper check part; 23-lower check part. DETAILED DESCRIPTION

[0020] The specific implementation of the present invention is further described in detail below with reference to the accompanying drawings.

[0021] like Figure 1-5As shown, a control valve with automatic flow regulation function includes a valve body 1, a valve stem 2 is installed in the valve body 1, and a conical valve disc 3 is provided at the lower end of the valve stem 2. A water inlet 4 and a water outlet 5 are respectively provided at both ends of the valve body 1, and a flow channel 6 is provided between the water inlet 4 and the water outlet 5. A partition 7 is provided in the flow channel 6, and an annular abutment platform 8 for the conical valve disc 3 to abut is formed in the middle of the partition 7. A flow hole 9 is provided in the annular abutment platform 8. In actual use, by rotating the valve stem 2, the up and down movement position of the conical valve disc 3 can be controlled, thereby controlling the opening and closing of the flow channel 6 and the size of the flow in the flow channel, so as to manually control the size of the flow in the valve body. The lower end of the conical valve disc 3 is movably provided with a flow regulating member 10, and a flow regulating port 11 is provided on the side of the flow regulating member 10. A lower end cover 12 is installed at the lower end of the valve body 1, and a spring 13 is abutted between the lower end of the flow regulating member 10 and the lower end cover 12.

[0022] The utility model adopts the design of the flow regulating member 10, so that in actual use, when the pressure at the water inlet 4 is greater than the pressure at the water outlet 5, the flow regulating member 10 moves downward under pressure and the spring is compressed, so that the flow regulating port becomes smaller, thereby keeping the flow at the water outlet 5 constant and preventing sudden changes. When the pressure at the water inlet 4 returns to normal, the spring will push the flow regulating member 10 to move and automatically reset, thereby achieving an automatic balancing and regulating effect of the valve body flow. The structure is simple and the cost is low.

[0023] Combine Figure 2 and Figure 3 A screw 14 is provided at the lower end of the valve stem 2, and a screw hole 15 is provided in the conical valve disc 3 to cooperate with the screw 14. The conical valve disc is connected to the valve stem 2 through a thread. The connection structure is simple and easy to assemble and disassemble.

[0024] Combine Figure 2 and Figure 3 The upper end surface of the conical valve disc 3 is installed with a sealing ring 16 to improve the sealing performance. The upper end surface of the sealing ring 16 is installed with a fixing plate 17, so that it is further fixed to the outer periphery of the screw and is not easy to loosen.

[0025] The flow regulating member 10 defines the flow hole 9 , and the diameter of the sealing ring 16 is larger than that of the flow hole 9 so as to abut against the upper end surface of the annular abutting platform 8 to close the flow hole 9 .

[0026] Look specifically Figure 4 The flow regulating port 11 includes a square hole 18 and a triangular hole 19. When the flow regulating member 10 is pressed and moves downward, the flow is first quickly adjusted through the square hole 18, and then the flow is adjusted through the triangular hole 19, which has higher sensitivity and more precise control.

[0027] A detection port 20 is provided on the side of the valve body 1 , and a temperature and pressure sensor 21 is installed in the detection port 20 , which can detect the temperature and pressure in the valve body in real time.

[0028] Look specifically Figure 5 The partition 7 includes an upper check portion 22 and a lower check portion 23 . The upper check portion 22 is located on a side close to the water inlet 4 , and the lower check portion 23 is located on a side close to the water outlet 5 .

[0029] 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 are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention 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 in this invention is defined by the appended claims and their equivalents.

Claims

1. A control valve with automatic flow regulation function, characterized in that: The utility model comprises a valve body (1), wherein a valve stem (2) is installed in the valve body (1), a conical valve disc (3) is provided at the lower end of the valve stem (2), a water inlet (4) and a water outlet (5) are respectively provided at both ends of the valve body (1), a flow passage (6) is provided between the water inlet (4) and the water outlet (5), a partition (7) is provided in the flow passage (6), an annular abutting platform (8) for the conical valve disc (3) to abut is formed in the middle of the partition (7), an overflow hole (9) is provided in the annular abutting platform (8), a flow regulating member (10) is movably provided at the lower end of the conical valve disc (3), a flow regulating port (11) is provided on the side of the flow regulating member (10), a lower end cover (12) is installed at the lower end of the valve body (1), and a spring (13) is abutted between the lower end of the flow regulating member (10) and the lower end cover (12).

2. The control valve with automatic flow regulation function according to claim 1, characterized in that: A screw rod (14) is provided at the lower end of the valve stem (2), and a screw hole (15) cooperating with the screw rod (14) is provided in the conical valve flap (3).

3. The control valve with automatic flow regulation function according to claim 2, characterized in that: A sealing ring (16) is installed on the upper end surface of the conical valve flap (3), and a fixing plate (17) is installed on the upper end surface of the sealing ring (16).

4. The control valve with automatic flow regulation function according to claim 3, characterized in that: The flow regulating member (10) is provided with the flow hole (9), and the diameter of the sealing ring (16) is larger than the diameter of the flow hole (9) so as to abut against the upper end surface of the annular abutting platform (8) to close the flow hole (9).

5. The control valve with automatic flow regulation function according to claim 1, characterized in that: The flow regulating port (11) comprises a square hole (18) and a triangular hole (19).

6. The control valve with automatic flow regulation function according to claim 1, characterized in that: A detection port (20) is provided on the side of the valve body (1), and a temperature and pressure sensor (21) is installed in the detection port (20).

7. The control valve with automatic flow regulation function according to claim 1, characterized in that: The partition (7) comprises an upper check portion (22) and a lower check portion (23), wherein the upper check portion (22) is located on a side close to the water inlet (4), and the lower check portion (23) is located on a side close to the water outlet (5).

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