A bipolar pressure reducing valve connection structure

Abstract

The utility model belongs to the technical field of pressure reducing valves, and specifically relates to a bipolar pressure reducing valve connection structure, including a valve body, a first-stage pressure reducing head is arranged on the right side of the valve body, a second-stage pressure reducing head is arranged on the left side of the valve body, an air inlet head is fixedly connected to the front side of the valve body, a connecting pipe is plugged into the outer side of the air inlet head, and a mounting block is fixedly connected to the front side of the valve body. The utility model is provided with a mounting block, a limiting sleeve and other components, so that when the connecting pipe and the air inlet head are plugged in, the limiting sleeve and the connecting pipe can be threaded by rotating the limiting sleeve, so that the limiting sleeve has a limiting effect on the connecting pipe, so that the connecting pipe and the air inlet head remain stable when plugged in, and solves the problem that when the bipolar pressure reducing valve is used, when the connecting pipe sends high-pressure fluid to the air inlet head, the connection between the air inlet head and the connecting pipe is easily unstable, resulting in leakage of high-pressure fluid.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure reducing valves, in particular to a bipolar pressure reducing valve connection structure. Background Art

[0002] A pressure reducing valve is a valve device used to control fluid pressure. Its main function is to reduce high-pressure fluid to a set lower pressure. A bipolar pressure reducing valve reduces the incoming pressure twice, thereby reducing the vibration of the pressure gauge. According to the utility model with patent authorization announcement number CN216867632U, a composite bipolar pressure reducing valve is disclosed. The valve includes an inlet housing as the main structure of the valve. The first-stage pressure reducing valve structure is assembled by successive crimping, including a first-stage pressure reducing valve seat inserted into the inlet end of the inlet housing, a first-stage pressure reducing valve stem pressing the end face of the first-stage pressure reducing valve seat, a first-stage regulating first spring is assembled between the first-stage pressure reducing valve stem pressing the first-stage pressure reducing valve seat, and the valve sub-housing presses the first-stage pressure reducing valve stem and connects with the inlet housing through threads, finally realizing the first-stage pressure reducing valve structure assembly. When the bipolar pressure reducing valve is used, when the connecting pipe delivers high-pressure fluid to the air inlet head, it is easy to cause the connection between the air inlet head and the connecting pipe to be unstable, resulting in leakage of high-pressure fluid. Utility Model Content

[0003] The utility model aims to provide a bipolar pressure reducing valve connection structure, which solves the problem that when the bipolar pressure reducing valve is used, the connection between the air intake head and the connecting pipe is easily unstable when the connecting pipe sends high-pressure fluid to the air intake head, resulting in leakage of the high-pressure fluid.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a bipolar pressure reducing valve connection structure, comprising a valve body, a first-stage pressure reducing head is arranged on the right side of the valve body, a second-stage pressure reducing head is arranged on the left side of the valve body, an air inlet head is fixedly connected to the front side of the valve body, a connecting pipe is inserted into the outer side of the air inlet head, a mounting block is fixedly connected to the front side of the valve body, the mounting block is slidably connected to the air inlet head, the interior of the mounting block is rotatably connected to a limiting block, the end of the limiting block away from the mounting block is fixedly connected to a limiting sleeve, the outer side of the mounting block contacts with a connecting rod, the outer side of the mounting block is fixedly connected to a fixing block, the interior of the connecting rod is fixedly connected to A fixing rod is connected, a first spring is arranged on the outside of the fixing rod, one end of the connecting rod away from the first-stage pressure reducing head is fixedly connected to a limiting frame, the limiting frame is in contact with the mounting block, a clamping block is fixedly connected to a side of the limiting frame close to the limiting sleeve, a sleeve is fixedly connected to the inside of the first-stage pressure reducing head and the second-stage pressure reducing head, an air hole is opened on the outside of the sleeve, a damping pad is slidably connected to the inside of the sleeve, a support rod is fixedly connected to the lower end of the damping pad, the support rod is slidably connected to the sleeve, a second spring is arranged on the outside of the support rod, one end of the second spring is fixedly connected to the sleeve, and the other end of the second spring is fixedly connected to the damping pad.

[0005] Preferably, a protrusion is fixedly connected to the outer side of the limit block, an annular groove is provided inside the mounting block, and a protrusion is slidably connected inside the annular groove. The design of the protrusion can play a limiting role on the limit block.

[0006] Preferably, the limiting sleeve is in contact with the mounting block, and the limiting sleeve is connected to the connecting pipe via threads. The design of the limiting sleeve can ensure that the connection between the connecting pipe and the air intake head remains stable.

[0007] Preferably, the fixing block is slidably connected to the connecting rod. The fixing block is slidably connected to the fixing rod. The design of the fixing block can limit the connecting rod.

[0008] Preferably, one end of the first spring contacts the fixed block, and the other end of the first spring contacts the connecting rod. The design of the first spring can drive the limiting frame to limit the limiting sleeve.

[0009] Preferably, a slot is provided on the outer side of the limiting sleeve, and a block is slidably connected to the inside of the slot. The slot can be designed to cooperate with the block to limit the limiting sleeve 44.

[0010] Preferably, there are multiple card slots, which are distributed in a ring shape on the limiting sleeve. Through the design of the card slots, the card blocks can cooperate with each other to limit the limiting sleeve.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] 1. The utility model is provided with a mounting block, a limiting sleeve and other components, so that when the connecting pipe and the air inlet head are plugged in, the limiting sleeve and the connecting pipe can be threaded by rotating the limiting sleeve, so that the limiting sleeve limits the connecting pipe, so that the connecting pipe and the air inlet head remain stable when plugged in, and solves the problem that when the bipolar pressure reducing valve is used, the connection between the air inlet head and the connecting pipe is easily unstable when the connecting pipe sends high-pressure fluid to the air inlet head, resulting in leakage of high-pressure fluid.

[0013] 2. The utility model is provided with components such as a connecting rod, a limit frame, and a block. The first spring can drive the connecting rod to move, so that the connecting rod drives the block on the limit frame to slide into the groove on the limit sleeve, which can limit the limit sleeve, so that the limit sleeve can remain stable when limiting the connecting pipe, thereby keeping the connection between the connecting pipe and the air intake head stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The overall structure of the utility model is three-dimensional Figure 1 ;

[0015] Figure 2The overall structure of the utility model is three-dimensional Figure 2 ;

[0016] Figure 3 For the utility model Figure 1 A side cross-sectional view of

[0017] Figure 4 For the utility model Figure 2 A magnified view of the structure of part A;

[0018] Figure 5 For the utility model Figure 3 Enlarged view of the structure of part B.

[0019] In the figure: 1. valve body; 11. first-stage pressure reducing head; 12. second-stage pressure reducing head; 2. air inlet head; 3. connecting pipe; 4. mounting block; 41. limiting block; 42. protrusion; 43. annular groove; 44. limiting sleeve; 5. connecting rod; 51. fixing block; 52. fixing rod; 53. first spring; 54. limiting frame; 55. clamping block; 56. clamping groove; 6. sleeve; 61. air hole; 62. damping pad; 63. support rod; 64. second spring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-5 A bipolar pressure reducing valve connection structure comprises a valve body 1, a first-stage pressure reducing head 11 is arranged on the right side of the valve body 1, a second-stage pressure reducing head 12 is arranged on the left side of the valve body 1, an air inlet head 2 is fixedly connected to the front of the valve body 1, a connecting pipe 3 is plugged into the outer side of the air inlet head 2, a mounting block 4 is fixedly connected to the front of the valve body 1, the mounting block 4 is slidably connected to the air inlet head 2, a limiting block 41 is rotatably connected inside the mounting block 4, a protrusion 42 is fixedly connected to the outer side of the limiting block 41, an annular groove 43 is opened inside the mounting block 4, and the protrusion 42 is slidably connected inside the annular groove 43, and the limiting block 41 can be limited by the design of the protrusion 42.

[0022] See also Figure 2-5The end of the limit block 41 away from the mounting block 4 is fixedly connected to the limit sleeve 44, the limit sleeve 44 contacts the mounting block 4, the limit sleeve 44 is threadedly connected to the connecting pipe 3, and the design of the limit sleeve 44 can ensure that the connecting pipe 3 and the air intake head 2 are plugged in and remain stable. The outer side of the mounting block 4 contacts with a connecting rod 5, the outer side of the mounting block 4 is fixedly connected with a fixing block 51, the inside of the connecting rod 5 is fixedly connected with a fixing rod 52, the fixing block 51 is slidably connected to the connecting rod 5, and the fixing block 51 is slidably connected to the fixing rod 52. The design of the fixing block 51 can limit the connecting rod 5.

[0023] See also Figure 2-5 A first spring 53 is arranged on the outer side of the fixing rod 52, one end of the first spring 53 contacts the fixing block 51, and the other end of the first spring 53 contacts the connecting rod 5. Through the design of the first spring 53, the limiting frame 54 can be driven to limit the limiting sleeve 44. The end of the connecting rod 5 away from the first-stage pressure reducing head 11 is fixedly connected to the limiting frame 54, and the limiting frame 54 contacts the mounting block 4. A clamping block 55 is fixedly connected to the side of the limiting frame 54 close to the limiting sleeve 44. A clamping groove 56 is provided on the outer side of the limiting sleeve 44. There are multiple clamping grooves 56, and the multiple clamping grooves 56 are distributed in an annular shape on the limiting sleeve 44. Through the design of the clamping groove 56, the clamping block 55 can be cooperated with to limit the limiting sleeve 44. The first pressure reducing head 11 and the second pressure reducing head 12 are internally slidably connected with a block 55, the first pressure reducing head 11 and the second pressure reducing head 12 are internally fixedly connected with a sleeve 6, an air hole 61 is provided on the outer side of the sleeve 6, and a damping pad 62 is internally slidably connected with the sleeve 6. The lower end of the damping pad 62 is fixedly connected with a support rod 63, and the support rod 63 is slidably connected to the sleeve 6. A second spring 64 is arranged on the outer side of the support rod 63, one end of the second spring 64 is fixedly connected to the sleeve 6, and the other end of the second spring 64 is fixedly connected to the damping pad 62. The strength of the second spring 64 in the sleeve 6 of the first pressure reducing head 11 and the second pressure reducing head 12 is different, and is adjusted according to actual needs. For example, the strength of the second spring 64 in the sleeve 6 of the first pressure reducing head 11 is 500 N / m, and the strength of the second spring 64 in the sleeve 6 of the second pressure reducing head 12 is 1000 N / m, so as to meet the decompression effect of the first pressure reducing head 11 and the second pressure reducing head 12.

[0024] The specific implementation process of the utility model is as follows: when in use, by moving the limiting frame 54 in the direction away from the limiting sleeve 44, the limiting frame 54 drives the connecting rod 5 to slide on the fixing block 51, and the connecting rod 5 squeezes the first spring 53, and the limiting frame 54 drives the clamping block 55 to slide out of the clamping groove 56 on the limiting sleeve 44, by plugging the connecting pipe 3 with the air intake head 2, and then rotating the limiting sleeve 44, the limiting sleeve 44 and the connecting pipe 3 are threaded, so that the limiting sleeve 44 is connected to the connecting pipe 3 The limiting function can keep the connection pipe 3 and the air inlet head 2 stable when plugged, and avoid the phenomenon that the connection pipe 3 is loose and leaks when the connection pipe 3 sends high-pressure air into the air inlet head 2; then loosen the limiting frame 54, the elastic force of the first spring 53 will drive the connecting rod 5 to move, so that the connecting rod 5 drives the limiting frame 54 to move, so that the limiting frame 54 drives the block 55 to slide into the card groove 56 on the limiting sleeve 44, so that the limiting sleeve 44 can limit the connection pipe 3 and keep it stable;

[0025] When the first-stage pressure reducing head 11 and the second-stage pressure reducing head 12 are filled with high-pressure fluid, the high-pressure fluid flows into the sleeve 6, driving the damping pad 62 to move in the sleeve 6, so that the damping pad 62 squeezes the second spring 64 and moves the damping pad 62 to the lower end of the air hole 61, thereby relieving the pressure.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bipolar pressure reducing valve connection structure, comprising a valve body (1), characterized in that: A first-stage pressure reducing head (11) is arranged on the right side of the valve body (1), and a second-stage pressure reducing head (12) is arranged on the left side of the valve body (1); an air inlet head (2) is fixedly connected to the front side of the valve body (1), and a connecting pipe (3) is inserted on the outside of the air inlet head (2); a mounting block (4) is fixedly connected to the front side of the valve body (1), and the mounting block (4) is slidably connected to the air inlet head (2); a limit block (41) is rotatably connected to the inside of the mounting block (4), and an end of the limit block (41) away from the mounting block (4) is fixedly connected to a limit sleeve (44); a connecting rod (5) is in contact with the outside of the mounting block (4), and a fixing block (51) is fixedly connected to the outside of the mounting block (4); a fixing rod (52) is fixedly connected to the inside of the connecting rod (5), and a first spring (53) is arranged on the outside of the fixing rod (52); One end of the connecting rod (5) away from the first-stage pressure reducing head (11) is fixedly connected to a limiting frame (54), the limiting frame (54) is in contact with the mounting block (4), and a clamping block (55) is fixedly connected to a side of the limiting frame (54) close to the limiting sleeve (44). The first-stage pressure reducing head (11) and the second-stage pressure reducing head (12) are fixedly connected to a sleeve (6), an air hole (61) is provided on the outside of the sleeve (6), a damping pad (62) is slidably connected to the inside of the sleeve (6), a support rod (63) is fixedly connected to the lower end of the damping pad (62), the support rod (63) is slidably connected to the sleeve (6), a second spring (64) is provided on the outside of the support rod (63), one end of the second spring (64) is fixedly connected to the sleeve (6), and the other end of the second spring (64) is fixedly connected to the damping pad (62).

2. A bipolar pressure reducing valve connection structure according to claim 1, characterized in that: A protrusion (42) is fixedly connected to the outer side of the limiting block (41), an annular groove (43) is provided inside the mounting block (4), and a protrusion (42) is slidably connected inside the annular groove (43).

3. A bipolar pressure reducing valve connection structure according to claim 1, characterized in that: The limiting sleeve (44) is in contact with the mounting block (4), and the limiting sleeve (44) is connected to the connecting pipe (3) via threads.

4. A bipolar pressure reducing valve connection structure according to claim 1, characterized in that: The fixing block (51) is slidably connected to the connecting rod (5), and the fixing block (51) is slidably connected to the fixing rod (52).

5. A bipolar pressure reducing valve connection structure according to claim 1, characterized in that: One end of the first spring (53) contacts the fixing block (51), and the other end of the first spring (53) contacts the connecting rod (5).

6. A bipolar pressure reducing valve connection structure according to claim 1, characterized in that: A clamping groove (56) is provided on the outer side of the limiting sleeve (44), and a clamping block (55) is slidably connected inside the clamping groove (56).

7. A bipolar pressure reducing valve connection structure according to claim 6, characterized in that: There are a plurality of the card slots (56), and the plurality of card slots (56) are distributed in a ring shape on the limiting sleeve (44).

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