Pressure double-regulation three-bridge valve

Abstract

The utility model relates to the field of valves, and discloses a pressure double-adjusting three-bridge valve which comprises a three-bridge valve body, a main through pipe is connected to the middle of the front side of the three-bridge valve body, branch through pipes are connected to the two sides of the three-bridge valve body, and a pressure double-adjusting assembly is arranged on the upper surface of the three-bridge valve body. When an operator rotates the double adjusting knobs, the adjusting screw rod rotates along with the double adjusting knobs, the pressure adjusting block is driven to move up and down due to the fact that the adjusting screw rod is in threaded connection with the pressure adjusting block, movement of the pressure adjusting block is transmitted to the flow limiting valve rod through the pressure adjusting arm, and the flow limiting valve rod moves up and down in the branch through pipe. The pressure of the two channels can be adjusted only through one operation point by means of the double adjusting knobs, the internal pressure of the two branch through pipes can be adjusted at the same time, and convenience is achieved.

Description

Technical Field

[0001] This utility model relates to the field of valves, and in particular to a pressure dual-regulating three-bridge valve. Background Technology

[0002] A three-bridge valve is a fluid control valve commonly used in pipeline systems in industries such as petroleum, chemical, and pharmaceutical. This type of valve is called "three-bridge" because its valve body has three channels or "bridges." Of the three channels, one is the main channel, and the others are branch channels.

[0003] In practice, because a three-way valve has three channels, the pressure of each channel usually needs to be adjusted separately. This usually involves two operating points, making the operation process cumbersome and increasing the operator's labor intensity and operation time. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a pressure-regulating three-bridge valve, which solves the problem that traditional three-bridge valves typically require individual adjustment of the pressure of each sub-channel.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a pressure-regulating three-bridge valve, comprising a three-bridge valve body, a main pipe connected to the middle of the front side of the three-bridge valve body, branch pipes connected to both sides of the three-bridge valve body, a pressure-regulating assembly provided on the upper surface of the three-bridge valve body, the pressure-regulating assembly comprising a connecting column, a connecting plate, an adjusting screw, a dual adjusting knob, a pressure adjusting block, a pressure adjusting arm, and a flow-limiting valve stem, the lower end of the connecting column being fixedly connected to the upper surface of the three-bridge valve body, the connecting plate being fixedly connected to the front side of the upper end of the connecting column, the adjusting screw being rotatably connected to the lower surface of the connecting plate, the lower end of the adjusting screw being rotatably connected to the upper surface of the three-bridge valve body, the pressure adjusting block being threadedly connected to the outer side of the adjusting screw, pressure adjusting arms being fixedly connected to both ends of the pressure adjusting block, and flow-limiting valve stems being fixedly connected to the lower surfaces of the ends of the two pressure adjusting arms away from the pressure adjusting block, the lower ends of the two flow-limiting valve stems respectively penetrating inside the two branch pipes.

[0006] Preferably, a dual adjustment knob is rotatably connected to the upper surface of the connecting plate, and the dual adjustment knob is drivenly connected to the adjustment screw.

[0007] Preferably, the sealing column passes through the middle of the flow limiting valve stem, and the lower end of the sealing column is fixedly connected to the upper surface of the branch pipe.

[0008] Preferably, both the main pipe and the branch pipe are fixedly connected to a pipe interface at their front ends, and the pipe interface is provided with threads inside.

[0009] Preferably, a connecting pipe is connected to the middle of the rear side of the three-bridge valve body.

[0010] Preferably, a flow limiting groove is provided at the bottom of both of the branch pipes, and the flow limiting groove is located directly below the flow limiting valve stem.

[0011] Preferably, pressure sensors are provided on the upper surfaces of both branch pipes, and the detection ends of the two pressure sensors are respectively located inside the two branch pipes.

[0012] Preferably, a valve wheel is provided on the upper surface of the connecting pipe.

[0013] Beneficial effects

[0014] This invention provides a pressure-regulating three-bridge valve. Compared with the prior art, it has the following advantages:

[0015] 1. In this utility model, by setting a pressure dual adjustment component, when the operator rotates the dual adjustment knob, the adjustment screw rotates accordingly. Since the adjustment screw and the pressure adjustment block are connected by a thread, the pressure adjustment block is driven to move up and down. The movement of the pressure adjustment block is transmitted to the flow limiting valve rod through the pressure adjustment arm, so that the flow limiting valve rod moves up and down inside the branch pipe, thereby adjusting the flow cross-sectional area of ​​the branch pipe and realizing the adjustment of fluid pressure. By using the dual adjustment knob, the pressure adjustment of the two channels can be completed with only one operation point, and the pressure inside the two branch pipes can be adjusted simultaneously, which is more convenient.

[0016] 2. In this utility model, by setting a flow-limiting groove, the gap between the flow-limiting valve rod and the flow-limiting groove changes when the flow-limiting valve rod moves up and down, thereby changing the flow area of ​​the fluid through the branch pipe, thus realizing the control of the fluid flow rate. Combined with the pressure change detected by the pressure sensor, it can effectively prevent the pressure of the three-bridge valve from being too high or too low, and ensure the safety of the three-bridge valve operation. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the front side of a pressure dual-regulating three-bridge valve proposed in this utility model;

[0018] Figure 2 This is a three-dimensional structural diagram of the rear side of a pressure dual-regulating three-bridge valve proposed in this utility model;

[0019] Figure 3 This is a schematic cross-sectional view of a portion of the branch pipe in a pressure dual-regulating three-bridge valve proposed in this utility model.

[0020] Figure 4 This utility model proposes a pressure dual-regulating three-bridge valve Figure 3 A magnified view of A in the middle.

[0021] Legend:

[0022] 1. Three-bridge valve body; 2. Connecting pipe; 3. Main pipe; 4. Branch pipe; 5. Pressure dual adjustment assembly; 501. Connecting column; 502. Connecting plate; 503. Adjusting screw; 504. Dual adjustment knob; 505. Pressure regulating block; 506. Pressure regulating arm; 507. Flow limiting valve stem; 6. Pressure sensor; 7. Pipe interface; 8. Valve wheel; 9. Sealing column; 10. Flow limiting groove. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-4 This utility model provides two technical solutions, specifically including the following embodiments:

[0025] Example 1:

[0026] A pressure-regulating three-bridge valve includes a three-bridge valve body 1. A main pipe 3 is connected to the middle of the front side of the three-bridge valve body 1, and branch pipes 4 are connected to both sides of the three-bridge valve body 1. A pressure-regulating assembly 5 is provided on the upper surface of the three-bridge valve body 1. The pressure-regulating assembly 5 includes a connecting post 501, a connecting plate 502, an adjusting screw 503, a dual-adjustment knob 504, a pressure regulating block 505, a pressure regulating arm 506, and a flow-limiting valve stem 507. The lower end of the connecting post 501 is fixedly connected to the upper surface of the three-bridge valve body 1. The connecting plate 502 is fixedly connected to the front side of the upper end of the connecting post 501. The adjusting screw 503 is rotatably connected to the lower surface of the connecting plate 502. The lower end of the adjusting screw 503 is rotatably connected to the upper surface of the three-bridge valve body 1. A pressure valve is threaded on the outer side of the adjusting screw 503. The regulating block 505 has pressure regulating arms 506 fixedly connected to both ends. Flow limiting valve stems 507 are fixedly connected to the lower surface of the ends of the two pressure regulating arms 506 away from the pressure regulating block 505. The pressure regulating block 505 has a thread in the middle. The rear end of the pressure regulating block 505 is slidably connected to the front side of the connecting column 501. The lower ends of the two flow limiting valve stems 507 are respectively installed inside the two branch pipes 4. A double adjusting knob 504 is rotatably connected to the upper surface of the connecting plate 502. The double adjusting knob 504 is connected to the adjusting screw 503. A sealing column 9 is installed through the middle of the flow limiting valve stem 507. A sealing layer is provided on the inner side of the sealing column 9 to prevent fluid leakage. The lower end of the sealing column 9 is fixedly connected to the upper surface of the branch pipe 4.

[0027] During operation, when the operator rotates the dual adjustment knob 504, the adjustment screw 503 rotates accordingly. Since the adjustment screw 503 is threadedly connected to the pressure regulating block 505, it drives the pressure regulating block 505 to move up and down. The movement of the pressure regulating block 505 is transmitted to the flow limiting valve stem 507 through the pressure regulating arm 506, causing the flow limiting valve stem 507 to move up and down inside the branch pipe 4, thereby adjusting the flow cross-sectional area of ​​the branch pipe 4 and realizing the regulation of fluid pressure. By using the dual adjustment knob 504, the pressure regulation of both channels can be completed with only one operation point, and the pressure inside the two branch pipes 4 can be adjusted simultaneously, which is quite convenient.

[0028] Example 2:

[0029] Based on Embodiment 1, both the main pipe 3 and the branch pipe 4 are fixedly connected to pipe interfaces 7 at their front ends. The pipe interfaces 7 are threaded inside. A connecting pipe 2 is connected to the middle of the rear side of the three-way valve body 1. A flow limiting groove 10 is provided at the bottom of the interior of each of the two branch pipes 4. The flow limiting groove 10 is located directly below the flow limiting valve stem 507. A pressure sensor 6 is provided on the upper surface of each of the two branch pipes 4. The detection ends of the two pressure sensors 6 are respectively located inside the two branch pipes 4. When the flow limiting valve stem 507 moves up and down, the gap between the flow limiting valve stem 507 and the flow limiting groove 10 changes, thereby changing the flow area of ​​the fluid through the branch pipe 4, thereby realizing the control of the fluid flow rate. Combined with the pressure change detected by the pressure sensor 6, it can effectively prevent the pressure of the three-way valve from being too high or too low, ensuring the safety of the three-way valve operation. A valve wheel 8 is provided on the upper surface of the connecting pipe 2. It should be noted that the valve wheel 8 and other corresponding structures used to adjust the flow rate of the entire three-way valve are relatively mature in the prior art. Here, only the prior art is used, so it will not be described in detail.

[0030] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A pressure-regulating three-bridge valve, comprising a three-bridge valve body (1), characterized in that: The three-bridge valve body (1) has a main pipe (3) connected to the middle of its front side, and branch pipes (4) connected to both sides of the three-bridge valve body (1). A pressure dual-adjustment assembly (5) is provided on the upper surface of the three-bridge valve body (1). The pressure dual-adjustment assembly (5) includes a connecting column (501), a connecting plate (502), an adjusting screw (503), a dual-adjustment knob (504), a pressure adjusting block (505), a pressure adjusting arm (506), and a flow limiting valve stem (507). The lower end of the connecting column (501) is fixedly connected to the upper surface of the three-bridge valve body (1), and the front side of the upper end of the connecting column (501) is fixedly connected to the connecting plate. (502), the lower surface of the connecting plate (502) is rotatably connected to an adjusting screw (503), the lower end of the adjusting screw (503) is rotatably connected to the upper surface of the three-bridge valve body (1), the outer side of the adjusting screw (503) is threaded with a pressure adjusting block (505), the left and right ends of the pressure adjusting block (505) are fixedly connected with pressure adjusting arms (506), the lower surface of the two pressure adjusting arms (506) away from the pressure adjusting block (505) is fixedly connected with a flow limiting valve rod (507), the lower ends of the two flow limiting valve rods (507) are respectively inserted into the two branch pipes (4).

2. The pressure dual-regulating three-bridge valve according to claim 1, characterized in that: The upper surface of the connecting plate (502) is rotatably connected to a double adjustment knob (504), which is connected to the adjustment screw (503) in a transmission manner.

3. The pressure dual-regulating three-bridge valve according to claim 1, characterized in that: The flow limiting valve stem (507) has a sealing column (9) running through its middle, and the lower end of the sealing column (9) is fixedly connected to the upper surface of the branch pipe (4).

4. The pressure dual-regulating three-bridge valve according to claim 1, characterized in that: The front ends of the main pipe (3) and the branch pipe (4) are both fixedly connected to pipe interfaces (7), and the pipe interfaces (7) are threaded inside.

5. A pressure-regulating three-bridge valve according to claim 1, characterized in that: The three-bridge valve body (1) is connected to a connecting pipe (2) in the middle of its rear side.

6. The pressure dual-regulating three-bridge valve according to claim 1, characterized in that: Both of the branch pipes (4) are provided with flow limiting grooves (10) at their bottom ends, and the flow limiting grooves (10) are located directly below the flow limiting valve stem (507).

7. The pressure dual-regulating three-bridge valve according to claim 1, characterized in that: Pressure sensors (6) are provided on the upper surface of both of the two branch pipes (4), and the detection ends of the two pressure sensors (6) are respectively located inside the two branch pipes (4).

8. A pressure dual-regulating three-bridge valve according to claim 5, characterized in that: A valve wheel (8) is provided on the upper surface of the connector (2).

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