Pressure reducing valve with damping function

Abstract

The utility model belongs to pressure reducing valve technical field especially relates to a pressure reducing valve with shock -absorbing function, include: valve body, the bottom surface fixed communication of valve body has the water inlet pipe, the right side fixed communication of valve body has the drain pipe, the inner bottom wall fixed connection of valve body has the valve seat, the inner wall of valve seat is connected with the sealing piston valve core. Through setting's first telescopic spring, second telescopic spring, valve seat, sealing piston valve core, hydraulic oil cavity, hydraulic telescopic support, reflux air cavity and air hole, can utilize the cooperation of first telescopic spring and second telescopic spring, realize this sealing piston valve core's elastic telescopic support and open and close, and utilize hydraulic oil cavity, hydraulic telescopic support, reflux air cavity and air hole's cooperation, can constitute hydraulic damping system, realize sealing piston valve core's elasticity and hydraulic damping shock -absorbing double protection, avoid sealing piston valve core's elastic fatigue failure, facilitate this pressure reducing valve's effective stable use.

Description

Technical Field

[0001] This utility model belongs to the field of pressure reducing valve technology, and in particular relates to a pressure reducing valve with shock absorption function. Background Technology

[0002] A pressure reducing valve is a valve that reduces the inlet pressure to a desired outlet pressure by adjusting the inlet pressure and relies on the energy of the medium itself to automatically maintain a stable outlet pressure. From a fluid mechanics perspective, a pressure reducing valve is a throttling element with variable local resistance. That is, by changing the throttling area, the flow velocity and kinetic energy of the fluid are changed, resulting in different pressure losses, thereby achieving the purpose of pressure reduction.

[0003] For example, Chinese patent CN215410498U discloses a pressure reducing valve with shock absorption function, including a pressure reducing valve, a fixed sleeve fixedly connected to the bottom of the pressure reducing valve, and a threaded rod threadedly connected to the bottom of the inner cavity of the fixed sleeve.

[0004] The aforementioned patent has the following problems:

[0005] This patented pressure reducing valve has some drawbacks in use. Its shock absorption relies on internal shock-absorbing pads and springs to achieve the elastic expansion and contraction of the valve core. However, after prolonged use, the shock-absorbing springs are prone to elastic mechanical fatigue, reducing their elastic force and thus decreasing the stability of the pressure reducing valve. Therefore, we propose a pressure reducing valve with shock absorption functionality. Utility Model Content

[0006] The purpose of this invention is to provide a pressure reducing valve with shock absorption function to solve the problems mentioned in the background art.

[0007] In view of this, the present invention provides a pressure reducing valve with shock absorption function, comprising: a valve body, wherein a water inlet pipe is fixedly connected to the bottom surface of the valve body, a drain pipe is fixedly connected to the right side surface of the valve body, a valve seat is fixedly connected to the inner bottom wall of the valve body, a sealing piston valve core is snapped into the inner wall of the valve seat, a first telescopic spring is fixedly connected to the upper surface of the sealing piston valve core, the top end of the first telescopic spring is fixedly connected to the inner top wall of the valve body, a hydraulic oil chamber is opened inside the top end of the valve body, a hydraulic telescopic support rod is fixedly embedded in the inner top wall of the valve body, the top end of the hydraulic telescopic support rod is located inside the hydraulic oil chamber, the bottom end of the hydraulic telescopic support rod passes through the first telescopic spring and is fixedly connected to the upper surface of the sealing piston valve core, and a return air chamber is opened inside the top end of the valve body, wherein annularly arranged air holes are opened on the inner wall of the return air chamber.

[0008] In the above technical solution, further, the upper surface of the sealing piston valve core is fixedly connected with a second telescopic spring arranged in a ring, and the top end of each second telescopic spring is fixedly connected to the inner top wall of the valve body.

[0009] In the above technical solution, a lifting ring is further fixedly connected to the upper surface of the valve body, and the lifting ring is located in the middle of the valve body.

[0010] In the above technical solution, a mounting bracket is fixedly connected to the left side of the valve body, and two mounting holes are opened on the left side of the mounting bracket.

[0011] In the above technical solution, a model mark is further provided on the front of the valve body, and the model mark is located in the middle of the valve body.

[0012] In the above technical solution, the left end of the water inlet pipe and the right end of the drain pipe are both fixedly connected to connecting flanges, and a set of connecting holes are opened on the outer surface of each connecting flange.

[0013] The beneficial effects of this utility model are:

[0014] This pressure-reducing valve with shock absorption function, through the arrangement of a first telescopic spring, a second telescopic spring, a valve seat, a sealed piston valve core, a hydraulic oil chamber, a hydraulic telescopic support rod, a return air chamber, and an air hole, can achieve elastic telescopic support and opening and closing of the sealed piston valve core by utilizing the cooperation of the first and second telescopic springs. Furthermore, by utilizing the cooperation of the hydraulic oil chamber, the hydraulic telescopic support rod, the return air chamber, and the air hole, a hydraulic damping system can be formed, achieving dual protection of the sealed piston valve core through elasticity and hydraulic damping vibration reduction, avoiding elastic fatigue failure of the sealed piston valve core, and facilitating the effective and stable use of this pressure-reducing valve. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a pressure reducing valve with shock absorption function according to this utility model.

[0016] Figure 2 This is a schematic diagram of the internal cross-sectional structure of the valve body in this utility model;

[0017] Figure 3 This is a top sectional view of the valve body in this utility model;

[0018] Figure 4 This is a side sectional view of the valve body in this utility model.

[0019] The markings in the diagram are as follows:

[0020] 1. Valve body; 2. Inlet pipe; 3. Drain pipe; 4. Connecting flange; 41. Connecting hole; 5. Model mark; 6. Mounting bracket; 61. Mounting hole; 7. Lifting ring; 8. Valve seat; 9. Sealing piston valve core; 10. Hydraulic telescopic support rod; 11. First telescopic spring; 12. Return air chamber; 121. Air hole; 13. Hydraulic oil chamber; 14. Second telescopic spring. Detailed Implementation

[0021] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.

[0022] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0023] Example 1: This example provides a pressure reducing valve with shock absorption function, including: a valve body 1, a water inlet pipe 2 fixedly connected to the bottom surface of the valve body 1, a drain pipe 3 fixedly connected to the right side surface of the valve body 1, a valve seat 8 fixedly connected to the inner bottom wall of the valve body 1, a sealing piston valve core 9 snapped into the inner wall of the valve seat 8, a first telescopic spring 11 fixedly connected to the upper surface of the sealing piston valve core 9, the top end of the first telescopic spring 11 fixedly connected to the inner top wall of the valve body 1, a hydraulic oil chamber 13 opened inside the top end of the valve body 1, a hydraulic telescopic support rod 10 fixedly embedded in the inner top wall of the valve body 1, the top end of the hydraulic telescopic support rod 10 located inside the hydraulic oil chamber 13, the bottom end of the hydraulic telescopic support rod 10 passing through the first telescopic spring 11 and fixedly connected to the upper surface of the sealing piston valve core 9, a return air chamber 12 opened inside the top end of the valve body 1, and annularly arranged air holes 121 opened on the inner wall of the return air chamber 12.

[0024] The first telescopic spring 11 is used to achieve the elastic opening and closing of the sealed piston valve core 9. The hydraulic oil chamber 13, the hydraulic telescopic support rod 10, the return air chamber 12 and the air hole 121 are combined to form a hydraulic damping system, which provides dual protection for the sealed piston valve core 9 through elasticity and hydraulic damping vibration reduction, so as to achieve safe and stable opening and closing of the sealed piston valve core 9, and thus achieve the effective and stable use of this pressure reducing valve.

[0025] Example 2: This example provides a pressure reducing valve with shock absorption function. In addition to the technical solution of the above example, it also has the following technical features: the upper surface of the sealing piston valve core 9 is fixedly connected with a ring of second telescopic springs 14, and the top end of each second telescopic spring 14 is fixedly connected to the inner top wall of the valve body 1.

[0026] The second telescopic spring 14 can assist the elastic opening and closing of the sealing piston valve core 9, increasing the stability of the opening and closing of the sealing piston valve core 9.

[0027] Example 3: This example provides a pressure reducing valve with shock absorption function. In addition to the technical solutions of the above examples, it also has the following technical features: a lifting ring 7 is fixedly connected to the upper surface of the valve body 1, and the lifting ring 7 is located in the middle of the valve body 1.

[0028] The valve body 1 can be easily lifted by the lifting ring 7, which facilitates the installation and operation of the pressure reducing valve.

[0029] Example 4: This example provides a pressure reducing valve with shock absorption function. In addition to the technical solutions of the above examples, it also has the following technical features: a mounting bracket 6 is fixedly connected to the left side of the valve body 1, and two mounting holes 61 are opened on the left side of the mounting bracket 6.

[0030] The valve body 1 can be installed and fixed by the mounting bracket 6 and the mounting hole 61, which facilitates the stable use of this pressure reducing valve.

[0031] Example 5: This example provides a pressure reducing valve with shock absorption function. In addition to the technical solutions of the above examples, it also has the following technical features: the front of the valve body 1 is provided with model number 5, which is located in the middle of the valve body 1.

[0032] The model number 5 indicates the model number of this pressure reducing valve, making it easier for installers to understand and use.

[0033] Example 6: This example provides a pressure reducing valve with shock absorption function. In addition to the technical solution of the above example, it also has the following technical features: the left end of the water inlet pipe 2 and the right end of the drain pipe 3 are both fixedly connected to a connecting flange 4, and a set of connecting holes 41 are opened on the outer surface of each connecting flange 4.

[0034] The connection flange 4 and the connection hole 41 allow for external pipe connection between the inlet pipe 2 and the drain pipe 3, facilitating the installation and operation of this pressure reducing valve.

[0035] Working principle:

[0036] In use, the pressure reducing valve is first lifted by hoisting equipment onto the hoisting ring 7. The valve body 1 is then installed and fixed using the mounting bracket 6 and mounting hole 61. The internal components of the pressure reducing valve are then assembled into the valve body 1. The inlet pipe 2 and drain pipe 3 are then connected to the external pipeline through the connection flange 4 and connection hole 41. During use, the first telescopic spring 11 and the second telescopic spring 14 work together to achieve the elastic expansion and contraction of the sealing piston valve core 9 inside the pressure reducing valve. The hydraulic oil chamber 13, the hydraulic telescopic support rod 10, the return air chamber 12, and the air hole 121 work together to form a hydraulic damping system, which provides dual protection for the sealing piston valve core 9 through elasticity and hydraulic damping vibration reduction. This ensures the safe and stable opening and closing of the sealing piston valve core 9, thereby achieving the effective and stable use of the pressure reducing valve.

[0037] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A pressure reducing valve with shock absorption function, characterized in that, include: A valve body (1) has an inlet pipe (2) fixedly connected to its bottom surface and a drain pipe (3) fixedly connected to its right side surface. A valve seat (8) is fixedly connected to the inner bottom wall of the valve body (1). A sealing piston valve core (9) is snapped into the inner wall of the valve seat (8). A first telescopic spring (11) is fixedly connected to the upper surface of the sealing piston valve core (9). The top end of the first telescopic spring (11) is fixedly connected to the inner top wall of the valve body (1). The top end of the valve body (1) is... The valve body (1) has a hydraulic oil chamber (13) and a hydraulic telescopic support rod (10) is fixedly embedded in the inner top wall of the valve body (1). The top end of the hydraulic telescopic support rod (10) is located inside the hydraulic oil chamber (13). The bottom end of the hydraulic telescopic support rod (10) passes through the first telescopic spring (11) and is fixedly connected to the upper surface of the sealing piston valve core (9). The valve body (1) has a return air chamber (12) inside the top end. The return air chamber (12) has annularly arranged air holes (121) on its inner wall.

2. A pressure reducing valve with shock absorption function according to claim 1, characterized in that, The upper surface of the sealing piston valve core (9) is fixedly connected with a second telescopic spring (14) arranged in a ring, and the top end of each second telescopic spring (14) is fixedly connected to the inner top wall of the valve body (1).

3. A pressure reducing valve with shock absorption function according to claim 1, characterized in that, A lifting ring (7) is fixedly connected to the upper surface of the valve body (1), and the lifting ring (7) is located in the middle of the valve body (1).

4. A pressure reducing valve with shock absorption function according to claim 1, characterized in that, The valve body (1) is fixedly connected to a mounting bracket (6), and the mounting bracket (6) has two mounting holes (61) on its left side.

5. A pressure reducing valve with shock absorption function according to claim 1, characterized in that, The valve body (1) has a model mark (5) on its front side, and the model mark (5) is located in the middle of the valve body (1).

6. A pressure reducing valve with shock absorption function according to claim 1, characterized in that, The left end of the water inlet pipe (2) and the right end of the drain pipe (3) are both fixedly connected to a connecting flange (4), and a set of connecting holes (41) are opened on the outer surface of each connecting flange (4).

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