Pressure reducing valve

Abstract

The utility model provides a pressure reducing valve belongs to valve technical field. It solved the existing pressure reducing valve to have the setting check function, but because cannot make to strict control backflow, often will go to the back seepage flow situation problem. This pressure reducing valve, including the valve main part, be provided with the water inlet pipeline and the water outlet pipeline on the valve main part, the lower extreme fixed setting of valve main part has the connecting portion, be provided with the adjusting part on the valve main part, the connecting portion is detachably sealed and is connected with the mounting spare, be provided with the water pass -through between the connecting portion and the water outlet pipeline, be provided with the cylinder spare for filtering on the mounting spare, a plurality of water pass -through holes for water are set up on the outside wall of cylinder spare, be provided with the filter screen for filtering on the water pass -through hole, the upper end fixed setting of cylinder spare has the fixed ring, the upper end portion of cylinder spare inner chamber is provided with the check valve subassembly with double check function. The utility model has the advantage that has double check function.

Description

Technical Field

[0001] This utility model belongs to the field of valve technology, and specifically relates to a pressure reducing valve. Background Technology

[0002] The function of a pressure reducing valve is to adjust a higher input pressure to a specified output pressure (i.e., outlet pressure) and maintain a stable output pressure, unaffected by changes in air flow rate or fluctuations in air source pressure.

[0003] Some existing pressure reducing valves are equipped with a check valve function, but because they cannot strictly control backflow, backflow often occurs. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a pressure reducing valve with dual check function.

[0005] The objective of this utility model can be achieved through the following technical solution: A pressure reducing valve includes a valve body, on which an inlet pipe for water intake and an outlet pipe for water output are provided. A connecting part is fixedly provided at the lower end of the valve body. The valve body is characterized by having an adjusting component provided on it relative to the outlet pipe. An mounting component is detachably and sealingly connected to the connecting part, and the mounting component is threaded onto the connecting part. A water outlet is provided between the connecting part and the outlet pipe. A filter cylinder is provided on the mounting component. Several water passage holes are opened on the outer wall of the cylinder, and filter screens are provided on the water passage holes. A fixing ring is fixedly provided at the upper end of the cylinder, and the fixing ring cooperates with the water outlet. A check valve assembly with dual check function is provided at the upper end of the internal cavity of the cylinder.

[0006] In the aforementioned pressure reducing valve, the check valve assembly includes a first check valve, a fixing part, a second check valve, and a connecting spring. The cylinder is provided with a first fixing part and a second fixing part. The first check valve is disposed on the fixing part, and the front end of the first check valve abuts against the first fixing part. The second check valve is disposed on the fixing part, and the front end of the second check valve abuts against the second fixing part.

[0007] In the aforementioned pressure reducing valve, the fixing member has a slot for the first check member to slide up and down. The first check member is a T-shaped structure with one end located in the slot, and the second check member slides up and down on the outside of the fixing member.

[0008] In the aforementioned pressure reducing valve, connecting springs are provided between the first check element and the second fixing part, as well as between the second check element and the cylinder.

[0009] In the aforementioned pressure reducing valve, the fixing part two has several through holes for water passage.

[0010] Compared with existing technologies, this pressure reducing valve has an installation component between the inlet and outlet pipes. All liquids entering the outlet pipe need to be filtered through the installation component. At the same time, the installation component has a check valve, giving the pressure reducing valve a double check valve effect. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] In the diagram, 1. Valve body; 2. Inlet pipe; 3. Outlet pipe; 4. Connecting part; 5. Adjusting component; 6. Mounting component; 7. Cylinder; 8. Filter screen; 9. Retaining ring; 10. Check valve assembly; 11. Check valve component one; 12. Fixing component; 13. Check valve component two; 14. Connecting spring; 15. Fixing part one; 16. Fixing part two. Detailed Implementation

[0013] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0014] like Figure 1 As shown, this pressure reducing valve includes a valve body 1, on which an inlet pipe 2 for water inlet and an outlet pipe 3 for water outlet are provided. A connecting part 4 is fixedly provided at the lower end of the valve body 1. An adjusting part 5 is provided on the valve body 1 relative to the outlet pipe 3. An mounting part 6 is detachably and sealingly connected to the connecting part 4, and the mounting part 6 is threadedly connected to the connecting part 4. A water outlet is provided between the connecting part 4 and the outlet pipe 3. A filter cylinder 7 is provided on the mounting part 6. Several water passage holes are opened on the outer wall of the cylinder 7 for water passage. A filter screen 8 is provided on the water passage holes for filtration. A fixing ring 9 is fixedly provided at the upper end of the cylinder 7, and the fixing ring 9 cooperates with the water outlet. A check assembly 10 with a double check function is provided at the upper end of the internal cavity of the cylinder 7.

[0015] To elaborate further, when liquid enters from the inlet pipe 2, it is filtered through the water passage on the side wall of the mounting part 6 and enters the inner cavity of the cylinder 7. Due to the water pressure, the first check valve 11 and the second check valve 13 move upward and enter the outlet pipe 3 through the water passage. When the inlet pipe 2 stops supplying water, the first check valve 11 and the second check valve 13 lose the effect of water pressure, and the connecting spring 14 rebounds, re-sealing the first fixing part 15 and the second fixing part 16 to prevent the liquid from flowing back into the outlet pipe 3.

[0016] To elaborate further, the check valve assembly 10 includes a first check valve 11, a fixing member 12, a second check valve 13, and a connecting spring 14. The cylindrical member 7 is provided with a first fixing part 15 and a second fixing part. The first check valve 11 is disposed on the fixing member 12, and the front end of the first check valve 11 abuts against the first fixing part 15. The second check valve 13 is disposed on the fixing member 12, and the front end of the second check valve 13 abuts against the second fixing part 16.

[0017] To elaborate further, the fixing member 12 has a slot for the first check member 11 to slide up and down. The first check member 11 is T-shaped, with one end set in the slot. The second check member 13 slides up and down on the outside of the fixing member 12.

[0018] To elaborate further, connecting springs 14 are provided between the first check valve 11 and the second fixing part 16, as well as between the second check valve 13 and the cylinder 7.

[0019] To elaborate further, the fixing part 216 has several through holes for water passage.

[0020] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0021] Although this document frequently uses terms such as valve body 1, inlet pipe 2, outlet pipe 3, connecting part 4, adjusting part 5, mounting part 6, cylinder 7, filter screen 8, fixing ring 9, check assembly 10, check part one 11, fixing part 12, check part two 13, connecting spring 14, fixing part one 15, and fixing part two 16, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A pressure reducing valve, comprising a valve body (1), wherein the valve body (1) is provided with an inlet pipe (2) for water inlet and an outlet pipe (3) for water outlet, and a connecting part (4) is fixedly provided at the lower end of the valve body (1), characterized in that, An adjusting element (5) is provided on the valve body (1) and relative to the outlet pipe (3). An installation element (6) is detachably and sealed on the connecting part (4), and the installation element (6) is threaded to the connecting part (4). A water outlet is provided between the connecting part (4) and the outlet pipe (3). A filter cylinder (7) is provided on the installation element (6). Several water passage holes for water passage are opened on the outer wall of the cylinder (7). A filter screen (8) for filtration is provided on the water passage holes. A fixing ring (9) is fixedly provided at the upper end of the cylinder (7), and the fixing ring (9) cooperates with the water outlet. A check component (10) with double check function is provided at the upper end of the internal cavity of the cylinder (7).

2. A pressure reducing valve according to claim 1, characterized in that, The check valve assembly (10) includes a first check valve (11), a fixing part (12), a second check valve (13), and a connecting spring (14). The cylinder (7) is provided with a first fixing part (15) and a second fixing part (16). The first check valve (11) is disposed on the fixing part (12), and the front end of the first check valve (11) abuts against the first fixing part (15). The second check valve (13) is disposed on the fixing part (12), and the front end of the second check valve (13) abuts against the second fixing part (16).

3. A pressure reducing valve according to claim 2, characterized in that, The fixing member (12) has a slot for the first check member (11) to slide up and down. The first check member (11) is a T-shaped structure with one end set in the slot. The second check member (13) slides up and down on the outside of the fixing member (12).

4. A pressure reducing valve according to claim 2, characterized in that, A connecting spring (14) is provided between the first check piece (11) and the second fixing part (16), as well as between the second check piece (13) and the cylinder (7).

5. A pressure reducing valve according to claim 2, characterized in that, The fixing part 2 (16) is provided with several through holes for water to pass through.

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