A regulating valve for precisely regulating flow

Abstract

The utility model belongs to the technical field of fluid conveying equipment, especially a regulating valve for precisely regulating flow, including a valve body, the valve body is a three-way structure, one port of which is an inlet, one port is an outlet, and one port is an installation port, and a valve cavity is arranged inside the valve body; a valve stem is slidably arranged at the connection between the inlet and the valve cavity in the installation port, a valve cover is threadedly connected to the outer side of the valve body corresponding to the installation port, a valve seat is arranged in the valve cavity, one end of the valve stem is matched with the valve seat, and a handwheel with a scale is arranged after the other end passes through the valve cover, and the valve stem is threadedly connected to the valve cover, and a scale matched with the scale is arranged at the end adjacent to the handwheel. Turning the handwheel drives the valve stem to rotate, and adjusting the distance between the valve stem and the valve seat achieves the effect of regulating the flow. The scale on the handwheel cooperates with the scale on the valve cover to intuitively display the distance the handwheel controls the valve stem to move, and the distance the valve stem can move, so as to facilitate accurate judgment of the flow of the regulating valve.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid conveying equipment, in particular to a regulating valve for precisely regulating flow. Background Art

[0002] A regulating valve is a valve that regulates the flow of fluid. When the fluid flows to the valve seat, the valve seat and the valve stem cooperate to open or close the regulating valve. At the same time, the valve stem and the valve seat can also play a flow regulation function. The flow is regulated by controlling the size of the gap between the valve stem and the valve seat. However, the control valve currently used can only be roughly adjusted when regulating the flow, and cannot be finely adjusted. It is also impossible to intuitively check the distance the valve stem moves, and thus it is impossible to confirm the adjustable range.

[0003] In view of the above problems, the utility model document proposes a regulating valve for precisely regulating flow. Utility Model Content

[0004] The utility model provides a regulating valve for precisely regulating flow, which improves the flow control accuracy of the regulating valve and facilitates viewing the adjustable range of the valve stem.

[0005] The utility model provides the following technical solutions:

[0006] A regulating valve for precisely adjusting flow rate, comprises a valve body, wherein the valve body is a three-way structure, one port of which is an inlet channel, one port is an outlet channel, and one port is an installation port, a valve cavity is arranged inside the valve body, the inlet channel, the outlet channel and the installation port are all connected with the valve cavity; a valve stem is slidably arranged at the connection between the inlet channel and the valve cavity in the installation port corresponding to the connection between the inlet channel and the valve cavity, a valve cover is threadedly connected to the outer side of the valve body corresponding to the installation port, a valve seat is arranged in the valve cavity, and the valve seat is located at the connection between the inlet channel and the valve cavity, one end of the valve stem cooperates with the valve seat, and the other end passes through the valve cover and is connected to a handwheel with a scale, and the valve stem is threadedly connected to the valve cover, one end of the handwheel with the scale is provided with a makeshift groove, the end of the valve cover adjacent to the handwheel is arranged in the makeshift groove, and the end is provided with a scale matching the scale.

[0007] Furthermore, a mounting clamp is provided in the mounting port, and the valve seat is clamped on the mounting clamp.

[0008] Furthermore, a sealing gasket is provided between the valve seat and the mounting fixture.

[0009] Furthermore, a stuffing pad is provided in the installation port above the valve seat, the installation port is filled with stuffing above the stuffing pad, a pressure cover is provided above the stuffing, the top of the pressure cover abuts against the inner wall of the valve cover, and the valve stem passes through the pressure cover, the stuffing and the stuffing pad.

[0010] Furthermore, the end of the valve stem matching the valve seat is conical.

[0011] Furthermore, the ports of the valve body corresponding to the inlet and outlet are provided with ferrule nuts.

[0012] Furthermore, the outer side wall of the valve body corresponding to the installation port is also threadedly connected with a first panel nut, and the first panel nut is adjacent to the end face of the valve cover.

[0013] Furthermore, the outer side wall of the valve cover is also threadedly connected with a second panel nut, and the second panel nut is adjacent to one end of the handwheel provided with a dial.

[0014] In the utility model, the flow rate is adjusted by rotating the handwheel to drive the valve stem to rotate, and then adjusting the cooperation between the valve stem and the valve seat. The dial on the handwheel cooperates with the scale on the valve cover to intuitively display the distance the handwheel controls the movement of the valve stem and the distance the valve stem can move, which is convenient for accurately judging the flow of the regulating valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the three-dimensional structure of a regulating valve for precisely regulating flow provided by an embodiment of the utility model;

[0016] Figure 2 The present invention is a schematic cross-sectional view of a regulating valve for precisely regulating flow provided in an embodiment of the present invention.

[0017] Reference numerals:

[0018] 1. Valve body; 2. Inlet channel; 3. Outlet channel; 4. Installation port; 5. Valve cavity; 6. Sealing gasket; 7. Valve seat; 8. Packing pad; 9. Packing; 10. Gland; 11. Valve cover; 12. Valve stem; 13. Handwheel; 14. Second panel nut; 15. First panel nut; 16. Ferrule nut; 17. Scale; 18. Dial. DETAILED DESCRIPTION

[0019] The embodiments of the present invention are described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0020] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms, "connection" and "installation" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. In addition, "connection" can be a direct connection or an indirect connection through an intermediate medium. Among them, "fixed" means that they are connected to each other and the relative position relationship after connection remains unchanged. The directional terms mentioned in the embodiments of the present utility model, such as "inside", "outside", "top", "bottom", etc., are only reference to the directions of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present utility model, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present utility model.

[0021] In the embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0022] In the embodiment of the present invention, "and / or" is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0023] References to "one embodiment" or "some embodiments" etc. described in this specification mean that one or more embodiments of the utility model include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0024] Example:

[0025] Reference Figure 1 and Figure 2As shown, a regulating valve for precisely adjusting flow rate comprises a valve body 1, the valve body 1 is a three-way structure, one port of which is an inlet channel 2, one port is an outlet channel 3, and one port is an installation port 4. A valve cavity 5 is arranged inside the valve body 1, and the inlet channel 2, the outlet channel 3 and the installation port 4 are all connected with the valve cavity 5; a valve stem 12 is slidably arranged at the connection between the inlet channel 2 and the valve cavity 5 in the installation port 4, a valve cover 11 is threadedly connected to the outer side of the valve body 1 corresponding to the installation port 4, a valve seat 7 is arranged in the valve cavity 5, and the valve seat 7 is located at the connection between the inlet channel 2 and the valve cavity 5, one end of the valve stem 12 cooperates with the valve seat 7, and the other end passes through the valve cover 11 and is connected to a hand wheel 13 with a dial 18, and the valve stem 12 is threadedly connected to the valve cover 11, one end of the hand wheel 13 with the dial 18 is provided with a make way groove, and the end of the valve cover 11 adjacent to the hand wheel 13 is arranged in the make way groove, and the end is provided with a scale 17 matching the dial 18.

[0026] The connection and disconnection between the inlet channel 2 and the valve cavity 5 are controlled by the cooperation between the valve stem 12 and the valve seat 7. The valve stem 12 is driven to rotate in the valve cover 11 by the hand wheel 13, so that the valve stem 12 moves in the valve body 1. The movement of the valve stem 12 will adjust the gap between the end of the valve stem 12 and the valve seat 7, thereby adjusting the flow rate of the medium entering the valve cavity 5 from the inlet channel 2. When the hand wheel 13 is rotated, the dial 18 will rotate on the scale 17 on the valve cover 11, so that the moving distance of the valve stem 12 can be intuitively seen, which is convenient for accurately controlling the flow rate of the regulating valve. At the same time, the movable distance of the valve stem 12 can be checked through the scale 17, which is convenient for accurately judging the flow rate of the regulating valve.

[0027] An installation clamping platform is provided in the installation port 4, and the valve seat 7 is clamped on the installation clamping platform.

[0028] The valve seat 7 is supported by installing a clamping table, which facilitates the installation of the valve seat 7 and ensures that the position of the valve seat 7 pushed by the valve stem 12 will not change, thereby ensuring the normal operation of the regulating valve.

[0029] A sealing gasket 6 is provided between the valve seat 7 and the mounting fixture.

[0030] The sealing effect between the valve seat 7 and the mounting clamp is improved by the sealing gasket 6 to prevent the medium from leaking from the gap between the valve seat 7 and the mounting clamp after the valve stem 12 cooperates with the valve seat 7 to close the regulating valve, thereby affecting the use effect of the regulating valve. The sealing performance between the regulating valve seat 7 and the mounting clamp is improved by the sealing gasket 6 to ensure the normal use of the regulating valve.

[0031] A packing pad 8 is provided in the installation port 4 above the valve seat 7. The installation port 4 is filled with a packing 9 above the packing pad 8. A pressure cover 10 is provided above the packing 9. The top of the pressure cover 10 abuts against the inner wall of the valve cover 11. The valve stem 12 passes through the pressure cover 10, the packing 9 and the packing pad 8.

[0032] A packing 9 is filled above the valve seat 7. The packing 9 is supported by a packing pad 8. The valve cover 11 presses the gland 10, and then the packing 9 is pressed against the packing pad 8. The packing 9 improves the sealing performance of the valve stem 12 in the regulating valve when it moves, and prevents medium leakage from the gap between the valve stem 12 and the valve body 1 when the regulating valve is in the open state, thereby ensuring the normal use of the regulating valve.

[0033] The end of the valve stem 12 that matches the valve seat 7 is tapered.

[0034] The end of the valve stem 12 is tapered, which further improves the flow regulation accuracy. When the valve stem 12 moves, the distance between the valve stem 12 and the valve seat 7 is gradually adjusted as the valve stem 12 moves, so that the regulating valve can be gradually opened or closed, which is convenient for flow regulation and further makes the flow regulation of the regulating valve more accurate.

[0035] The ports of the valve body 1 corresponding to the inlet channel 2 and the outlet channel 3 are both provided with a ferrule nut 16 .

[0036] The ferrule nut 16 facilitates the connection of external pipelines at the ports of the inlet channel 2 and the outlet channel 3 of the valve body 1, thereby facilitating the installation and use of the regulating valve and improving the installation efficiency of the regulating valve.

[0037] The outer side wall of the valve body 1 corresponding to the installation port 4 is also threadedly connected with a first panel nut 15 , and the first panel nut 15 is adjacent to the end surface of the valve cover 11 .

[0038] The first panel nut 15 can be used to adjust the locking position of the valve cover 11 to prevent the packing 9 from being severely squeezed, and to lock the valve cover 11 to prevent it from rotating at will, which would affect the stability and sealing of the regulating valve.

[0039] The outer side wall of the valve cover 11 is also threadedly connected with a second panel nut 14 , and the second panel nut 14 is adjacent to one end of the hand wheel 13 provided with a dial 18 .

[0040] The second panel nut 14 can limit the moving distance of the handwheel 13, thereby preventing the handwheel 13 from rotating excessively, causing the valve stem 12 to move too far, and causing the extrusion transition from the valve stem 12 to the valve seat 7, which may cause damage to the valve seat 7, affecting the sealing of the valve seat 7 and further affecting the service life of the regulating valve.

[0041] Place the sealing gasket 6 on the installation card table, and then clamp the valve seat 7 above the sealing gasket 6, and then prevent the packing pad 8, fill the packing 9 on the packing pad 8, and then place the pressure cover 10 on the packing 9, and then tighten the valve cover 11 to the outside of the installation port 4 through a threaded connection, and press and fix the pressure cover 10 through the valve cover 11, and then fix the packing 9 and the valve seat 7, and at the same time connect one end of the valve stem 12 to the handwheel 13, and the other end of the cone is inserted into the valve body 1 from the valve cover 11, and the valve stem 12 is threadedly connected to the valve cover 11, so that the tapered end of the valve stem 12 matches the valve seat 7.

[0042] When in use, by rotating the handwheel 13, the valve stem 12 can be driven to move up and down in the valve body 1. The movement distance of the valve stem 12 and the movable distance of the valve stem 12 can be checked through the cooperation of the scale 17 on the valve cover 11 and the dial 18 on the handwheel 13, so as to judge the distance between the valve stem 12 and the valve seat 7, and then judge the flow of the regulating valve. At the same time, through the cooperation of the scale 17 and the dial 18 and the cooperation of the tapered end of the valve stem 12 and the valve seat 7, the accuracy of flow regulation is improved.

[0043] The above are only specific implementations of the utility model, but the protection scope of the utility model is not limited to them. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model; in the absence of conflicts, the embodiments of the utility model and the features in the embodiments can be combined with each other. Therefore, the protection scope of the utility model shall be based on the protection scope of the claims.

Claims

1. A regulating valve for precisely regulating flow, characterized in that: The utility model comprises a valve body, which is a three-way structure, one port of which is an inlet channel, one port is an outlet channel, and one port is an installation port. A valve cavity is arranged inside the valve body, and the inlet channel, the outlet channel and the installation port are all connected with the valve cavity. A valve stem is slidably arranged at the connection between the inlet channel and the valve cavity in the installation port corresponding to the connection between the inlet channel and the valve cavity, a valve cover is threadedly connected to the outer side of the valve body corresponding to the installation port, a valve seat is arranged in the valve cavity, and the valve seat is located at the connection between the inlet channel and the valve cavity, one end of the valve stem cooperates with the valve seat, and the other end passes through the valve cover and is connected with a handwheel with a dial, and the valve stem is threadedly connected with the valve cover, and one end of the handwheel provided with the dial is provided with a makeshift groove, and the end of the valve cover adjacent to the handwheel is arranged in the makeshift groove, and the end is provided with a scale matching the dial.

2. A regulating valve for precise flow control according to claim 1, characterized in that: An installation clamping platform is arranged in the installation port, and the valve seat is clamped on the installation clamping platform.

3. A regulating valve for precise flow control according to claim 2, characterized in that: A sealing gasket is provided between the valve seat and the mounting clamp.

4. A regulating valve for precise flow control according to claim 3, characterized in that: A packing pad is provided in the installation port above the valve seat. The installation port is filled with packing above the packing pad. A pressure cover is provided above the packing. The top of the pressure cover abuts against the inner wall of the valve cover. The valve stem passes through the pressure cover, the packing and the packing pad.

5. A regulating valve for precise flow control according to claim 4, characterized in that: The end of the valve stem matching the valve seat is conical.

6. A regulating valve for precise flow control according to claim 5, characterized in that: The ports of the valve body corresponding to the inlet and outlet channels are provided with ferrule nuts.

7. A regulating valve for precise flow control according to claim 6, characterized in that: The outer side wall of the valve body corresponding to the installation port is also threadedly connected with a first panel nut, and the first panel nut is adjacent to the end surface of the valve cover.

8. A regulating valve for precise flow control according to claim 7, characterized in that: The outer side wall of the valve cover is also threadedly connected with a second panel nut, and the second panel nut is adjacent to one end of the hand wheel with a dial.

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