Three-way test valve for pressure reducing valve group

Abstract

The three-way test valve comprises a main pipeline and a branch pipeline, the two ends of the main pipeline are provided with a water inlet and a water outlet respectively, the branch pipeline is located below the main pipeline and connected with the middle of the bottom face of the main pipeline, and the top of the main pipeline is provided with a detection hole and a pressure relief hole. The pressure relief hole is located in the side, close to the water outlet, of the branch pipeline and internally provided with a safety valve. During use, the three-way pressure gauge valve arranged in the detection hole can detect the water pressure in the pressure reducing valve group, so that an operator can visually know the water pressure in the pressure reducing valve group through a pressure gauge on the three-way pressure gauge valve and adjust the pressure reducing valve group according to the water pressure. During use, the safety valve arranged in the pressure relief hole can discharge part of water in the pressure reducing valve set when the water pressure is higher than a preset value, so that the purpose of reducing the water pressure is achieved, and the pressure reducing valve set is not prone to being damaged.

Description

Technical Field

[0001] The utility model relates to a pressure reducing valve group accessory, in particular to a three-way test valve for the pressure reducing valve group. Background Art

[0002] At present, a Chinese patent with the announcement number CN219119902U discloses a new type of stainless steel pressure reducing valve group, including two pressure reducing valve bodies, two tees and four connecting pipes. The two ends of the pressure reducing valve body are symmetrically formed with connecting ends, the outer wall of the connecting end is welded with a connecting part, and the top and bottom of the connecting part are rotatably installed with a connecting rod. The connecting pipe is welded with a hook rod at the top and bottom of the outer wall near the pressure reducing valve body, and the outer wall of the pressure reducing valve body is provided with a connecting mechanism extending to the inside of the connecting part. The connecting mechanism includes two butt-joint pipes, two transmission blocks, four movable seats and four bidirectional screws, two butt-joint pipes are slidably installed inside the connecting pipes, two movable seats are fixedly welded on both sides of the outer wall of one butt-joint pipe, two transmission blocks are rotatably installed on the outer walls of both sides of the pressure reducing valve body, two bidirectional screws are symmetrically welded and fixed on both ends of one transmission block, and the one action is threadedly connected to the outer wall of the bidirectional screw. However, during the use of the pressure reducing valve body, it is impossible to detect the water pressure inside the pressure reducing valve group, so it will be difficult for the operator to adjust the pressure reducing valve group according to the water pressure inside the pressure reducing valve group. Summary of the invention

[0003] In view of this, the purpose of the utility model is to provide a three-way test valve for a pressure reducing valve group, which has the advantage that the operator can intuitively understand the internal water pressure of the pressure reducing valve group and adjust the pressure reducing valve group according to the water pressure.

[0004] In order to solve the above technical problems, the technical solution of the utility model is: a three-way test valve for a pressure reducing valve group, comprising a main pipeline and a branch pipeline, wherein two ends of the main pipeline are respectively provided with a water inlet and a water outlet, and the water inlet and the water outlet are both connected with the inner hole of the main pipeline, the branch pipeline is located below the main pipeline, and the branch pipeline is connected to the middle part of the bottom surface of the main pipeline, the inner hole of the branch pipeline is connected with the inner hole of the main pipeline, and a detection hole and a pressure relief hole are provided on the top of the main pipeline, the detection hole is located on the side of the branch pipeline close to the water inlet, a three-way pressure gauge valve is installed in the detection hole, the pressure relief hole is located on the side of the branch pipeline close to the water outlet, and a safety valve is installed in the pressure relief hole.

[0005] Through the above technical solution, when in use, the three-way pressure gauge valve arranged in the detection hole can detect the water pressure in the pressure reducing valve group, so that the operator can intuitively understand the water pressure inside the pressure reducing valve group through the pressure gauge on the three-way pressure gauge valve, and adjust the pressure reducing valve group according to the water pressure. When in use, the safety valve arranged in the pressure relief hole can discharge part of the water in the pressure reducing valve group when the water pressure is higher than the preset value, so as to reduce the water pressure and make the pressure reducing valve group less likely to be damaged.

[0006] Preferably, the inner walls of the detection hole and the pressure relief hole are both provided with internal threads, the bottoms of the three-way pressure gauge valve and the safety valve are both provided with connecting pipes, and the outer walls of the connecting pipes are provided with external threads, and the external threads are used to screw and fix with the internal threads of the detection hole or the pressure relief hole.

[0007] Through the above technical solution, the three-way pressure gauge valve and the safety valve are both threadedly connected to the main pipeline through the connecting pipe, which has the advantages of high connection stability and convenient disassembly and assembly.

[0008] Preferably, the tops of the detection hole and the pressure relief hole are both provided with receiving grooves, and the top of the connecting pipe is provided with an outer flange, and the outer flange is received in the receiving groove.

[0009] Through the above technical solution, the outer flange and the receiving groove cooperate with each other to limit the screw-in length of the connecting pipe, making the installation process of the connecting pipe more precise.

[0010] Preferably, a sealing ring is sleeved on the outer side of the connecting pipe, and the outer flange presses and fixes the sealing ring at the bottom of the receiving groove.

[0011] Through the above technical solution, the outer flange presses and fixes the sealing ring at the bottom of the receiving groove. After the sealing ring is deformed under pressure, the gap between the outer flange and the main pipeline can be sealed, thereby improving the sealing performance of the above three-way test valve.

[0012] Preferably, a retaining ring is provided at the bottom edge of the outer flange, and the retaining ring squeezes the sealing ring and is embedded in the sealing ring.

[0013] Through the above technical solution, the retaining ring can be used to limit the outer ring of the sealing ring, so that after the sealing ring is compressed and deformed, it can extend more toward one side of the connecting pipe to more effectively seal the gap between the connecting pipe and the main pipeline.

[0014] Preferably, the bottoms of the detection hole and the pressure relief hole are both threadedly connected with mounting rings, and the tops of the mounting rings are provided with anti-loosening springs, and the anti-loosening springs are tightly pressed against the connecting pipe.

[0015] Through the above technical solution, the anti-loosening spring can apply an upward elastic force to the connecting pipe to prevent the connecting pipe from loosening.

[0016] Preferably, a buffer ring is provided on the top of the anti-loosening spring, and the anti-loosening spring drives the buffer ring and the connecting pipe to be pressed tightly together through elastic force.

[0017] Through the above technical solution, a buffer ring is arranged between the anti-loosening spring and the connecting pipe, which can effectively reduce the pressure on the bottom of the connecting pipe, making it difficult for scratches to appear on the bottom of the connecting pipe.

[0018] Preferably, a limiting groove is axially provided at the inner groove wall at the bottom of the detection hole and the pressure relief hole, and a limiting block is provided at the outer wall of the buffer ring, and the limiting block is slidably connected in the limiting groove.

[0019] Through the above technical solution, the limiting groove and the limiting block cooperate with each other to limit the rotation of the buffer ring, thereby ensuring that the anti-loosening spring is not easily twisted. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of an embodiment;

[0021] Figure 2 for Figure 1 Enlarged view of part A.

[0022] Figure numerals: 1. main pipeline; 2. branch pipeline; 3. water inlet; 4. water outlet; 5. detection hole; 6. pressure relief hole; 7. three-way pressure gauge valve; 8. safety valve; 9. connecting pipe; 10. storage groove; 11. outer flange; 12. sealing ring; 13. retaining ring; 14. mounting ring; 15. anti-loosening spring; 16. buffer ring; 17. limit groove; 18. limit block. DETAILED DESCRIPTION

[0023] The specific implementation modes of the present invention are further described below in conjunction with the accompanying drawings to make the technical solutions of the present invention easier to understand and grasp.

[0024] A three-way test valve for a pressure reducing valve group, such as Figure 1 , Figure 2 As shown, it includes a main pipeline 1 and a branch pipeline 2. A water inlet 3 and a water outlet 4 are respectively provided at both ends of the main pipeline 1, and the water inlet 3 and the water outlet 4 are both connected to the inner hole of the main pipeline 1. The branch pipeline 2 is located below the main pipeline 1, and the branch pipeline 2 is connected to the middle of the bottom surface of the main pipeline 1, and the inner hole of the branch pipeline 2 is connected to the inner hole of the main pipeline 1.

[0025] A detection hole 5 and a pressure relief hole 6 are provided at the top of the main pipeline 1. The detection hole 5 is located on the side of the branch pipeline 2 close to the water inlet 3. A three-way pressure gauge valve 7 is installed in the detection hole 5. The pressure relief hole 6 is located on the side of the branch pipeline 2 close to the water outlet 4. A safety valve 8 is installed in the pressure relief hole 6.

[0026] Internal threads are provided on the inner walls of the detection hole 5 and the pressure relief hole 6, and connecting pipes 9 are provided at the bottoms of the three-way pressure gauge valve 7 and the safety valve 8. External threads are provided on the outer walls of the connecting pipes 9, and the external threads are used to screw and fix with the internal threads of the detection hole 5 or the pressure relief hole 6.

[0027] The tops of the detection hole 5 and the pressure relief hole 6 are both provided with a receiving groove 10, and the top of the connecting pipe 9 is provided with an outer flange 11, which is received in the receiving groove 10. A sealing ring 12 is sleeved on the outside of the connecting pipe 9, and the outer flange 11 presses and fixes the sealing ring 12 at the bottom of the receiving groove 10. A retaining ring 13 is provided at the bottom edge of the outer flange 11, and the retaining ring 13 squeezes the sealing ring 12 and is embedded in the sealing ring 12.

[0028] The bottom of the detection hole 5 and the pressure relief hole 6 are both threadedly connected with a mounting ring 14, the top of the mounting ring 14 is provided with an anti-loosening spring 15, and the top of the anti-loosening spring 15 is provided with a buffer ring 16. The anti-loosening spring 15 drives the buffer ring 16 to press against the connecting pipe 9 through elastic force.

[0029] A limiting groove 17 is axially provided at the inner groove wall at the bottom of the detection hole 5 and the pressure relief hole 6. In this embodiment, the limiting grooves 17 are two in number and are symmetrically distributed on both sides of the detection hole 5 and the pressure relief hole 6. Two limiting blocks 18 are symmetrically provided at the outer wall of the buffer ring 16, and the two limiting blocks 18 are slidably connected in the two limiting grooves 17, respectively.

[0030] Of course, the above are only typical examples of the present invention. In addition, the present invention may have many other specific implementations. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A three-way test valve for a pressure reducing valve assembly, comprising a main pipeline (1) and a branch pipeline (2), wherein two ends of the main pipeline (1) are respectively provided with a water inlet (3) and a water outlet (4), and the water inlet (3) and the water outlet (4) are both connected to the inner hole of the main pipeline (1), the branch pipeline (2) is located below the main pipeline (1), and the branch pipeline (2) is connected to the middle of the bottom surface of the main pipeline (1), and the inner hole of the branch pipeline (2) is connected to the inner hole of the main pipeline (1), wherein: The top of the main pipeline (1) is provided with a detection hole (5) and a pressure relief hole (6); the detection hole (5) is located on the side of the branch pipeline (2) close to the water inlet (3); a three-way pressure gauge valve (7) is installed in the detection hole (5); the pressure relief hole (6) is located on the side of the branch pipeline (2) close to the water outlet (4); a safety valve (8) is installed in the pressure relief hole (6).

2. The three-way test valve for a pressure reducing valve group according to claim 1 is characterized in that: The inner walls of the detection hole (5) and the pressure relief hole (6) are both provided with internal threads, the bottoms of the three-way pressure gauge valve (7) and the safety valve (8) are both provided with connecting pipes (9), and the outer walls of the connecting pipes (9) are provided with external threads, and the external threads are used to be screwed and fixed with the internal threads of the detection hole (5) or the pressure relief hole (6).

3. The three-way test valve for a pressure reducing valve group according to claim 2 is characterized in that: The tops of the detection hole (5) and the pressure relief hole (6) are both provided with a receiving groove (10), and the top of the connecting pipe (9) is provided with an outer flange (11), and the outer flange (11) is received in the receiving groove (10).

4. The three-way test valve for a pressure reducing valve group according to claim 3 is characterized in that: A sealing ring (12) is sleeved on the outer side of the connecting pipe (9), and the outer flange (11) presses and fixes the sealing ring (12) at the bottom of the receiving groove (10).

5. The three-way test valve for a pressure reducing valve group according to claim 4 is characterized in that: A retaining ring (13) is provided at the bottom edge of the outer flange (11), and the retaining ring (13) squeezes the sealing ring (12) and is embedded in the sealing ring (12).

6. The three-way test valve for a pressure reducing valve group according to claim 2 is characterized in that: The bottoms of the detection hole (5) and the pressure relief hole (6) are both threadedly connected with mounting rings (14), and the top of the mounting ring (14) is provided with an anti-loosening spring (15), and the anti-loosening spring (15) is tightly pressed against the connecting pipe (9).

7. The three-way test valve for a pressure reducing valve group according to claim 6 is characterized in that: A buffer ring (16) is arranged on the top of the anti-loosening spring (15), and the anti-loosening spring (15) drives the buffer ring (16) to press against the connecting pipe (9) through elastic force.

8. The three-way test valve for a pressure reducing valve assembly according to claim 7, characterized in that: A limiting groove (17) is axially provided at the inner groove wall at the bottom of the detection hole (5) and the pressure relief hole (6), and a limiting block (18) is provided at the outer wall of the buffer ring (16), and the limiting block (18) is slidably connected in the limiting groove (17).

Images