A balancing valve

Abstract

The utility model provides a balance valve, including the valve body with the installation mouth, the valve body is equipped with the water inlet cavity and the water outlet cavity in the both ends of installation mouth intercommunication, can detachable seal connection one valve cap in the installation mouth, be equipped with the valve bonnet outside valve cap, be equipped with hand wheel with valve bonnet upper end rotation, be equipped with screw rod with valve cap inner rotation, screw rod upper end is connected with hand wheel with valve cap and is taken out, still include sealing fixed component, sealing fixed component includes connecting piece, fixed part, sealing piece, connecting piece upper end is equipped with the joint part, screw rod lower extreme is equipped with with joint part cooperation's installation groove, and is equipped with the installation hole with the symmetry at installation groove, fixed part fixedly is equipped with in the installation hole to limit connecting piece axial movement, connecting piece side wall is equipped with with sealing piece cooperation's sleeve joint's connecting part, the utility model discloses optimized structure, under long -term use, the axial position between screw rod and connecting piece is not easy to loosen, has improved the practicality of balance valve.

Description

Technical Field

[0001] This utility model relates to a balancing valve. Background Technology

[0002] A balancing valve is a special type of valve. The valve itself is not special; the difference lies in its function and application. In certain industries, due to significant pressure or flow differences between different parts of a pipeline or container, valves are installed between the corresponding pipelines or containers to reduce or balance these differences and regulate the relative pressure balance on both sides. However, after prolonged use, the internal sealing structure of existing balancing valves is prone to loosening, and the accuracy of the handwheel in regulating fluid pressure and flow decreases. Therefore, the current technology needs further improvement and development. Summary of the Invention

[0003] To address the shortcomings mentioned above, this utility model provides a balancing valve.

[0004] To achieve the above objectives, this utility model provides a balancing valve, comprising a valve body with an installation port, wherein the valve body has an inlet chamber and an outlet chamber that communicate with each other at both ends of the installation port, a valve cap is detachably and sealingly connected to the installation port, a valve cover is provided outside the valve cap, a handwheel is rotatably provided at the upper end of the valve cover, a lead screw is rotatably provided inside the valve cap, and the upper end of the lead screw passes through the valve cap and connects to the handwheel; it also includes a sealing and fixing assembly, which includes a connector, a fixing member, and a sealing member, wherein the upper end of the connector has a snap-fit ​​part, the lower end of the lead screw has an installation groove that mates with the snap-fit ​​part, and symmetrical installation holes are provided at the installation groove, the fixing member is fixedly provided in the installation holes to restrict the axial movement of the connector, and the side wall of the connector has a connecting part that mates with the sealing member to limit the sealing member between the lead screw and the connecting part, and to allow the sealing member to move up and down along the axis with the lead screw under the action of the handwheel to open or close the flow of the inlet chamber and the outlet chamber.

[0005] Furthermore, the mounting groove includes a main receiving groove for the snap-fit ​​part to rotate around the screw axis and a secondary receiving groove that communicates with the main receiving groove and allows the snap-fit ​​part to pass through. The height of the main receiving groove matches the height of the snap-fit ​​part, the diameter of the main receiving groove matches the length of the snap-fit ​​part, the mounting hole is provided corresponding to the secondary receiving groove, and the end of the fixing member passes into the secondary receiving groove and is threadedly connected to the mounting hole.

[0006] Furthermore, the connecting part is provided with a first step and a second step from bottom to top. The outer diameter of the first step is larger than the outer diameter of the second step. The sealing element includes a gasket and a pressure plate. The gasket is sleeved outside the second step and its lower wall surface abuts against the first step. The pressure plate is sleeved outside the second step and has an annular groove corresponding to the second step. The upper and lower walls of the pressure plate abut against the lower wall surface of the screw and the upper wall surface of the gasket, respectively. The valve body is provided with an abutment part, which cooperates with the gasket to open or close the flow of the inlet chamber and the outlet chamber.

[0007] Furthermore, the lower wall of the gasket is provided with multiple annular conical grooves, and the upper wall of the abutment portion is provided with an annular conical truncated cone corresponding to the annular conical grooves.

[0008] Furthermore, the valve cap and the mounting port are connected by threads, and a first sealing ring is provided between them. The valve cap is provided with a first annular mounting groove, and the first sealing ring is fitted onto the first annular mounting groove.

[0009] Furthermore, the valve cap and the lead screw are connected by threads, and multiple second sealing rings are provided between them. The valve cap is provided with multiple second annular mounting grooves, and the second sealing rings are fitted onto the second annular mounting grooves one by one.

[0010] Furthermore, the valve body is equipped with a temperature measuring connector and a pressure measuring connector at the water inlet chamber.

[0011] The advantages of this utility model compared to the prior art are as follows: This utility model optimizes the structure, and under long-term use, the axial position between the lead screw and the connecting part is not easy to loosen, thus improving the practicality of the balance valve. Attached Figure Description

[0012] Figure 1 This is a cross-sectional view of a balancing valve according to the present invention; Figure 2 for Figure 1 Enlarged view of point A in the middle. Detailed Implementation

[0013] like Figure 1As shown in the figure, a balancing valve according to an embodiment of the present invention includes a valve body 1, which has an installation port 1-1. The valve body 1 has an inlet chamber 1-2 and an outlet chamber 1-3 that communicate with each other at both ends of the installation port 1-1. A valve cap 2 is detachably and sealingly connected to the installation port 1-1. Specifically, the valve cap 2 is threadedly connected to the installation port 1-1, and a first sealing ring 12 is provided between the valve cap 2 and the installation port 1-1. A first annular mounting groove 2-1 is provided outside the valve cap 2, and the first sealing ring 12 is fitted onto the first annular mounting groove 2-1 to improve the connection between the valve cap 2 and the installation port 1-1. The valve cap 2 is sealed; at the same time, a valve cover 3 is provided outside the valve cap 2, and a handwheel 4 is rotatably provided at the upper end of the valve cover 3. A screw 5 is rotatably provided inside the valve cap 2. The upper end of the screw 5 passes through the valve cap 2 and connects to the handwheel 4. Specifically, the valve cap 2 and the screw 5 are connected by threads. Multiple second sealing rings 13 are provided between the valve cap 2 and the screw 5. Multiple second annular mounting grooves 2-2 are provided inside the valve cap 2. The second sealing rings 13 are fitted one-to-one on the second annular mounting grooves 5-1. When in use, the screw 5 can be driven to rotate by the handwheel 4 and move along its axis in the movable cavity 4-1 inside the handwheel 4 under the action of the threads.

[0014] Furthermore, such as Figure 1 , Figure 2 As shown, this embodiment also includes a sealing and fixing assembly 6, which includes a connector 7, a fixing member 8, and a sealing member 9. The upper end of the connector 7 is provided with a snap-fit ​​part 7-1, and the lower end of the screw 5 is provided with an installation groove 5-1 that cooperates with the snap-fit ​​part 7-1, and symmetrically provided with installation holes 5-2 at the installation groove 5-1. The fixing member 8 is fixedly installed in the installation hole 5-2 to restrict the axial movement of the connector 7. The side wall of the connector 7 is provided with a connecting part 7-2 that cooperates with the sealing member 9, so that the sealing member 9 is limited between the screw 5 and the connecting part 7-2, and the sealing member 9 can move up and down along the axis with the screw 5 under the action of the handwheel 4 to open or close the flow of the inlet chamber 1-2 and the outlet chamber 1-3. Moreover, under long-term use, the axial position between the screw 5 and the connector 7 is not easy to loosen, and the handwheel 4 provides stable adjustment of fluid pressure and flow, which improves the practicality of the balance valve.

[0015] Furthermore, such as Figure 1 , Figure 2As shown, the mounting groove 5-1 in this embodiment includes a main receiving groove 5-11 and a secondary receiving groove 5-12. The secondary receiving groove 5-12 is connected to the main receiving groove 5-11 and allows the snap-fit ​​part 7-1 to pass through. After the snap-fit ​​part 7-1 enters the main receiving groove 5-11 through the secondary receiving groove 5-12, it can rotate around the axis of the lead screw 5 within the main receiving groove 5-11. Correspondingly, when the handwheel 4 drives the lead screw 5 to rotate, the lead screw 5 can rotate relative to the connecting member 7 and drive the connecting member 7 to move along the axis of the lead screw 5. The height of the main receiving groove 5-11 matches the height of the snap-fit ​​part 7-1, and the diameter of the main receiving groove 5-11 matches the length of the snap-fit ​​part 7-1. The handwheel 4 can precisely control the fluid pressure and flow rate. At the same time, the mounting hole 5-2 is provided corresponding to the secondary receiving groove 5-12. The end of the fixing member 8 passes through the secondary receiving groove 5-12 and is threadedly connected to the mounting hole 5-2 to restrict the snap-fit ​​part 7-1 from moving out of the secondary receiving groove 5-12 when it rotates.

[0016] Furthermore, such as Figure 1 , Figure 2 As shown, in this embodiment, the connecting part 7-2 is provided with a first step 7-21 and a second step 7-22 from bottom to top. The outer diameter of the first step 7-21 is larger than the outer diameter of the second step 7-22. The sealing element 9 includes a gasket 10 and a water pressure plate 11. The gasket 10 and the water pressure plate 11 have slight elasticity and are rigidly installed outside the connecting part 7-2. The gasket 10 is sleeved outside the second step 7-22 and its lower wall surface abuts against the first step 7-21. The water pressure plate 11 is sleeved outside the second step 7-22 and has an annular groove 11-1 corresponding to the second step 7-22. The lower part of the water pressure plate 11... The upper wall of the gasket 10 abuts against the wall, and when the snap-fit ​​part 7-1 on the connector 7 is installed into the mounting groove 5-1, the upper wall of the pressure plate 11 abuts against the lower wall of the screw 5; at the same time, the valve body 1 is provided with an abutment part 1-4, which cooperates with the gasket 10 to open or close the flow of the inlet chamber 1-2 and the outlet chamber 1-3, and the lower wall of the gasket 10 is provided with multiple annular conical grooves 10-1, and the upper wall of the abutment part 1-4 is provided with multiple annular truncated cones 1-41, which engage with the annular conical grooves 10-1 one by one to improve the sealing between the gasket 10 and the abutment part 1-4.

[0017] Furthermore, such as Figure 1 As shown, in this embodiment, the valve body 1 is provided with a temperature measuring connector 14 and a pressure measuring connector 15 at the water inlet chamber 1-2. The temperature and pressure in the water inlet chamber 1-2 of the balance valve body 1 can be measured by the temperature measuring connector 14 and the pressure measuring connector 15 respectively. The operator operates the handwheel 4 to adjust the flow rate according to the measured pressure, thereby achieving the purpose of pressure reduction.

[0018] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A balancing valve, comprising a valve body (1) having an installation port (1-1), wherein the valve body (1) has an inlet chamber (1-2) and an outlet chamber (1-3) communicating with each other at both ends of the installation port (1-1), a valve cap (2) is detachably and sealingly connected inside the installation port (1-1), a valve cover (3) is provided outside the valve cap (2), a handwheel (4) is rotatably provided at the upper end of the valve cover (3), a lead screw (5) is rotatably provided inside the valve cap (2), and the upper end of the lead screw (5) passes through the valve cap (2) and connects to the handwheel (4), characterized in that: It also includes a sealing and fixing assembly (6), which includes a connector (7), a fixing member (8), and a sealing member (9). The upper end of the connector (7) is provided with a snap-fit ​​part (7-1), and the lower end of the screw (5) is provided with an installation groove (5-1) that cooperates with the snap-fit ​​part (7-1) and symmetrically provided with installation holes (5-2) at the installation groove (5-1). The fixing member (8) is fixedly installed in the installation hole (5-2) to restrict the axial movement of the connector (7). The side wall of the connector (7) is provided with a connecting part (7-2) that cooperates with the sealing member (9) so that the sealing member (9) is limited between the screw (5) and the connecting part (7-2), and so that the sealing member (9) can move up and down along the axis with the screw (5) under the action of the handwheel (4) to open or close the flow of the inlet chamber (1-2) and the outlet chamber (1-3).

2. A balancing valve according to claim 1, characterized in that: The mounting groove (5-1) includes a main receiving groove (5-11) for the snap-fit ​​part (7-1) to rotate around the axis of the lead screw (5) and a secondary receiving groove (5-12) that communicates with the main receiving groove (5-11) and allows the snap-fit ​​part (7-1) to pass through. The height of the main receiving groove (5-11) matches the height of the snap-fit ​​part (7-1), and the diameter of the main receiving groove (5-11) matches the length of the snap-fit ​​part (7-1). The mounting hole (5-2) is provided corresponding to the secondary receiving groove (5-12). The end of the fastener (8) passes into the secondary receiving groove (5-12) and is threadedly connected to the mounting hole (5-2).

3. A balancing valve according to claim 1, characterized in that: The connecting part (7-2) is provided with a first step (7-21) and a second step (7-22) from bottom to top. The outer diameter of the first step (7-21) is larger than the outer diameter of the second step (7-22). The sealing element (9) includes a gasket (10) and a pressure plate (11). The gasket (10) is sleeved outside the second step (7-22) and its lower wall surface abuts against the first step (7-21). The pressure plate (11) is sleeved outside the second step (7-22) and has an annular groove (11-1) corresponding to the second step (7-22). The upper and lower walls of the pressure plate (11) abut against the lower wall surface of the screw (5) and the upper wall surface of the gasket (10) respectively. The valve body (1) is provided with an abutment part (1-4) to cooperate with the gasket (10) to open or close the flow of the inlet chamber (1-2) and the outlet chamber (1-3).

4. A balancing valve according to claim 3, characterized in that: The lower wall of the gasket (10) is provided with a plurality of annular conical grooves (10-1), and the upper wall of the abutment part (1-4) is provided with an annular cone (1-41) corresponding to the annular conical grooves (10-1).

5. A balancing valve according to claim 1, characterized in that: The valve cap (2) is connected to the mounting port (1-1) by a thread, and a first sealing ring (12) is provided between them. The valve cap (2) is provided with a first annular mounting groove (2-1), and the first sealing ring (12) is fitted on the first annular mounting groove (2-1).

6. A balancing valve according to claim 1, characterized in that: The valve cap (2) and the lead screw (5) are connected by threads and a plurality of second sealing rings (13) are provided between them. The valve cap (2) is provided with a plurality of second annular mounting grooves (2-2), and the second sealing rings (13) are fitted one by one onto the second annular mounting grooves (2-2).

7. A balancing valve according to claim 1, characterized in that: The valve body (1) is provided with a temperature measuring connector (14) and a pressure measuring connector (15) at the water inlet chamber (1-2).

Images