Air inlet adjusting structure of negative pressure adjuster

Abstract

The invention relates to an air inlet adjusting structure of a negative pressure adjuster. The air inlet adjusting structure comprises an adjuster body, a pressure relief nut and a rotating set. The adjuster body comprises a valve body and a protruding cylinder connected with the valve body, the valve body is provided with an airflow channel, and the protruding cylinder is provided with a mounting hole and an air inlet communicated with the airflow channel. The pressure relief nut is arranged in the mounting hole and comprises a pressure relief hole and an air outlet communicated with the pressure relief hole. The rotating group comprises a screw cap and a knob connected with the screw cap, the screw cap covers the convex cylinder and can rotate relative to the valve body, and the knob is arranged in the pressure relief nut in a penetrating manner and is driven by the screw cap to selectively leave the air outlet; therefore, the gas flow entering the gas flow channel is adjusted, and the gas flow rate and noise are reduced.

Description

Technical Field

[0001] The invention relates to a negative pressure regulator, and in particular to an air intake regulating structure of the negative pressure regulator. Background Art

[0002] A negative pressure device is a device commonly used in treatment and medical care. It attracts and stimulates acupuncture points on the skin surface through negative pressure to promote blood circulation and relieve discomfort, so as to achieve the purpose of regulating body functions.

[0003] Furthermore, when using a negative pressure device, a negative pressure regulator is usually used to adjust the pressure. However, the current negative pressure regulator has a significant disadvantage of excessive noise during use, which not only affects the user's comfort, but may also interfere with the treatment process and treatment environment. Summary of the invention

[0004] An object of the present invention is to provide an air intake regulating structure of a negative pressure regulator, so as to adjust the gas flow rate entering the air flow channel, thereby reducing the gas flow rate and noise.

[0005] In order to achieve the above-mentioned purpose, the present invention is an air intake regulating structure of a negative pressure regulator, including a regulator body, a pressure relief nut and a rotating group. The regulator body includes a valve body and a convex cylinder connected to the valve body, the valve body has an air flow channel, and the convex cylinder has a mounting hole and an air inlet hole connected to the air flow channel. The pressure relief nut is arranged in the mounting hole, including a pressure relief hole and an air outlet connected to the pressure relief hole. The rotating group includes a rotary cover and a knob connected to the rotary cover, the rotary cover covers the convex cylinder and can rotate relative to the valve body, the knob is inserted into the pressure relief nut, and is driven by the rotary cover to selectively leave the air outlet; wherein, external gas flows into the pressure relief hole from the air inlet, and flows into the air flow channel when the knob leaves the air outlet, thereby controlling the flow of gas flowing into the air flow channel.

[0006] In one embodiment of the present invention, the valve body includes a main pipe communicating with the air flow channel and a pair of branch pipes, the pair of branch pipes being located at two opposite sides of the main pipe.

[0007] In one embodiment of the present invention, there are a plurality of air inlet holes, and the plurality of air inlet holes are arranged at intervals on the convex cylinder.

[0008] In one embodiment of the present invention, the air intake regulating structure of the negative pressure regulator further includes a first airtight ring, and the first airtight ring is clamped between the outer wall surface of the knob and the inner wall surface of the pressure relief nut.

[0009] In one embodiment of the present invention, the air intake regulating structure of the negative pressure regulator further includes a second airtight ring, and the second airtight ring is clamped between the outer wall surface of the pressure relief nut and the inner wall surface of the convex cylinder.

[0010] In one embodiment of the present invention, the pressure relief nut has a convex ring, and the second airtight ring abuts against one side of the convex ring.

[0011] In one embodiment of the present invention, an air flow gap is left between the rotating cover and the convex cylinder.

[0012] In one embodiment of the present invention, the pressure relief hole is adjacent to and communicates with the air inlet hole.

[0013] In one embodiment of the present invention, the rotary cover includes a flange, and a ring groove is disposed on a side of the flange facing the valve body.

[0014] In one embodiment of the present invention, the valve body is provided with an annular rib corresponding to the annular groove, and a reflux gap is maintained between the annular rib and the annular groove.

[0015] Compared with the prior art, the negative pressure regulator of the present invention comprises a regulator body, a pressure relief nut and a rotating group; further, the knob of the rotating group is inserted into the pressure relief nut, and is driven by the rotating cover to extend and retract at the air outlet of the pressure relief nut and selectively leave the air outlet, thereby controlling the inflow and outflow of gas into the air flow channel and adjusting the flow rate of external air into the valve body, thereby adjusting the air flow rate flowing into the negative pressure cup connected to the negative pressure regulator, thereby achieving the effect of reducing the gas flow rate and reducing noise, thereby increasing the practicality of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the application of the air intake regulating structure of the negative pressure regulator of the present invention.

[0017] Figure 2 It is a three-dimensional appearance schematic diagram of the air intake regulating structure of the negative pressure regulator of the present invention.

[0018] Figure 3 It is a three-dimensional exploded schematic diagram of the air intake regulating structure of the negative pressure regulator of the present invention.

[0019] Figure 4 It is a combined cross-sectional view of the air intake regulating structure of the negative pressure regulator of the present invention.

[0020] Figure 5 It is a gas flow schematic diagram of the air intake regulating structure of the negative pressure regulator of the present invention.

[0021] Figure 6 It is a three-dimensional exploded schematic diagram of another embodiment of the air intake regulating structure of the negative pressure regulator of the present invention.

[0022] Figure 7 A combined cross-sectional view of another embodiment of the air intake regulating structure of the negative pressure regulator of the present invention.

[0023] In the figure: 1, 1a: negative pressure regulator; 2: negative pressure cup; 3: negative pressure meter; 10, 10a: regulator body; 100, 100a: air flow channel; 101a: reflux gap; 11, 11a: valve body; 110a: container groove; 111: main pipe; 111a: annular rib; 112: branch pipe; 12, 12a: convex cylinder; 121, 121a: mounting hole; 122, 122a: air inlet hole; 20 , 20a: pressure relief nut; 21, 21a: pressure relief hole; 22, 22a: air outlet; 23: convex ring; 30, 30a: rotating group; 300, 300a: air flow gap; 301: bottom gap; 301a: gap; 31, 31a: screw cover; 310a: ring groove; 311a: flange; 32, 32a: knob; 320: groove; 40: first airtight ring; 50: second airtight ring. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0025] Please refer to Figure 1 , is an application schematic diagram of the negative pressure regulator of the present invention. The negative pressure regulator 1 of the present invention is used to adjust the negative pressure in a negative pressure cup 2. In actual use, the negative pressure cup 2 is connected to a negative pressure meter 3, and the negative pressure regulator 1 is arranged between the negative pressure cup 2 and the negative pressure meter 3. In addition, when the negative pressure meter 3 is in operation, negative pressure air is generated and sent into the negative pressure cup 2. The air pressure in the negative pressure cup 2 can be adjusted to the upper limit value of the negative pressure in the negative pressure cup 2 through the negative pressure regulator 1.

[0026] It should be noted that the operation generated by the negative pressure cup 2 can adjust the pressure in the negative pressure cup 2 through the negative pressure regulator 1, thereby reducing the noise during the operation of the negative pressure cup 2.

[0027] Please refer to Figures 2 to 4 , which are a three-dimensional appearance schematic diagram, a three-dimensional exploded schematic diagram and a combined cross-sectional view of the negative pressure regulator of the present invention. The present invention is an air intake adjustment structure of a negative pressure regulator 1, including a regulator body 10, a pressure relief nut 20 and a rotating group 30. The pressure relief nut 20 is disposed on the regulator body 10. The rotating group 30 is rotatably combined in the pressure relief nut 20, and can control the gas flow from the pressure relief nut 20 into the regulator body 10. The air intake adjustment structure of the negative pressure regulator 1 is described in more detail as follows.

[0028] The regulator body 10 includes a valve body 11 and a convex cylinder 12 connected to the valve body 11. The valve body 11 has an air flow channel 100. The convex cylinder 12 has a mounting hole 121 and an air inlet 122 connected to the air flow channel 100.

[0029] In this embodiment, the valve body 11 includes a main pipe 111 and a pair of branch pipes 112 connected to the air flow channel 100. The pair of branch pipes 112 are located on two opposite sides of the main pipe 111, but this embodiment is not limited in actual implementation. In addition, the number of the air inlet holes 122 is multiple. The multiple air inlet holes 122 are arranged on the convex cylinder 12 at intervals.

[0030] The pressure relief nut 20 is disposed in the mounting hole 121. The pressure relief nut 20 is a nut element made of metal material, but is not limited thereto. The pressure relief nut 20 includes a pressure relief hole 21 and an air outlet 22 connected to the pressure relief hole 21. Preferably, the pressure relief hole 21 is adjacent to the air inlet 122 and connected thereto.

[0031] Furthermore, the rotating assembly 30 includes a rotating cover 31 and a knob 32 connected to the rotating cover 31. The rotating cover 31 covers the convex cylinder 12 and can rotate relative to the valve body 11.

[0032] The knob 32 is inserted into the pressure relief nut 20, and driven by the rotary cover 31 to extend and retract at the gas outlet 22 and selectively leave the gas outlet 22, thereby limiting the gas entering the pressure relief nut 20 from flowing out of the gas outlet 22. When the knob 32 leaves the gas outlet 22, the gas retained in the pressure relief nut 20 flows into the gas flow channel 100.

[0033] Specifically, the air intake regulating structure of the negative pressure regulator 1 further includes a first airtight ring 40 and a second airtight ring 50. The first airtight ring 40 is clamped between the outer wall surface of the knob 32 and the inner wall surface of the pressure relief nut 20. Preferably, the outer wall surface of the knob 32 has a groove 320. The first airtight ring 40 is disposed in the groove 320.

[0034] Furthermore, the second airtight ring 50 is clamped between the outer wall surface of the pressure relief nut 20 and the inner wall surface of the convex cylinder 12. Preferably, the pressure relief nut 20 has a convex ring 23. The second airtight ring 50 abuts against one side of the convex ring 23.

[0035] It is worth noting that when the rotating assembly 30 is screwed with the pressure relief nut 20 through the knob 32, an airflow gap 300 is left between the rotating cover 31 and the convex cylinder 12. In addition, a bottom gap 301 is left between the bottom edge of the rotating cover 31 and the valve body 11. Accordingly, external air can flow into the airflow gap 300 from the bottom gap 301, and then flow into the convex cylinder 12 from the airflow gap 300 through the air inlet hole 122, and then flow into the pressure relief nut 20 through the pressure relief hole 21.

[0036] Please refer to Figure 5, which is a gas flow diagram of the negative pressure regulator of the present invention. The negative pressure regulator 1 of the present invention is used to adjust the flow rate of external air flowing into the valve body 11. When the negative pressure regulator 1 is used, the rotary cover 31 is rotated, and the bottom edge of the rotary cover 31 moves away from the valve body 11 to enlarge the bottom gap 301, so as to facilitate more external gas to flow into the airflow gap 300.

[0037] Subsequently, external air will flow into the convex cylinder 12 through the air inlet hole 122 , and then flow into the pressure relief nut 20 through the pressure relief hole 21 .

[0038] Furthermore, when the rotary cover 31 rotates, the knob 32 is driven to leave the air outlet 22 and retract the pressure relief nut 20. At this time, the air flowing into the pressure relief nut 20 flows out of the air outlet 22 and enters the valve body 11.

[0039] It should be noted that the air flow channel 100 is connected to the pair of branch pipes 112, and the pair of branch pipes 112 is connected to the negative pressure cup 2 (see also Figure 1 ). Accordingly, the air pressure in the negative pressure cup 2 can be adjusted by the negative pressure regulator 1 to adjust the gas flow entering the air flow channel 100, thereby reducing the gas flow rate in the air flow channel 100 and reducing noise, thereby achieving the effect of adjusting the upper limit value of the negative pressure.

[0040] Please refer to Figure 6 and Figure 7 , which is a three-dimensional exploded schematic diagram and combined cross-sectional view of another embodiment of the air intake regulating structure of the negative pressure regulator of the present invention. This embodiment is substantially the same as the previous embodiment. The air intake regulating structure of the negative pressure regulator 1a includes a regulator body 10a, a pressure relief nut 20a and a rotating group 30a. The regulator body 10a includes a valve body 11a and a convex cylinder 12a, and the valve body 11a has an air flow channel 100a. The convex cylinder 12a has a mounting hole 121a and an air inlet 122a. The pressure relief nut 20a includes a pressure relief hole 21a and an air outlet 22a. The rotating group 30a includes a rotary cover 31a and a knob 32a. In addition, the difference between this embodiment and the previous embodiment lies in the setting of the air flow path.

[0041] Specifically, the rotary cover 31a includes a flange 311a, and the flange 311a is provided with an annular groove 310a on a side facing the valve body 11a. In addition, the valve body 11a is provided with a receiving groove 110a on a side facing the pressure relief nut 20a, and a ring rib 111a is provided in the receiving groove 110a corresponding to the annular groove 310a. An airflow gap 300a is left between the rotary cover 31a and the convex cylinder 12a.

[0042] When the rotary cover 31a covers the convex cylinder 12a, the flange 311a of the rotary cover 31a is placed in the flange 311a, and a gap 301a exists between the outer edge surface of the flange 311a and the inner wall surface of the groove 110a. In addition, a reflux gap 101a is maintained between the annular rib 111a and the annular groove 310a.

[0043] Accordingly, external air flows into the receiving groove 110a from the gap 301a, and then flows along the return gap 101a through the annular groove 310a and the annular rib 111a to enter the airflow gap 300a. Then, the air flows from the airflow gap 300a through the air inlet 122a and the pressure relief hole 21a and flows into the airflow channel 100a from the air outlet 22a.

[0044] It should be noted that the external air flows into the air flow channel 100a from the gap 300a, thereby reducing the negative pressure of the cup 2 (see also Figure 1 ) The negative pressure limit inside. Since the flow path of the external air is narrow and curved, the flow speed is slow, so it will not produce noise due to hitting obstacles, thus achieving the effect of reducing noise.

[0045] The above-described embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Equivalent substitutions or changes made by those skilled in the art based on the present invention are within the protection scope of the present invention. The protection scope of the present invention shall be subject to the claims.

Claims

1. An air intake regulating structure of a negative pressure regulator, characterized in that: include: A regulator body, comprising a valve body and a convex cylinder connected to the valve body, the valve body having an air flow channel, the convex cylinder having a mounting hole and an air inlet hole connected to the air flow channel; a pressure relief nut, disposed in the mounting hole, the pressure relief nut comprising a pressure relief hole and an air outlet connected to the pressure relief hole; and A rotating assembly, comprising a rotating cover and a knob connected to the rotating cover, the rotating cover covers the convex cylinder and can rotate relative to the valve body, the knob is inserted into the pressure relief nut and driven by the rotating cover to selectively leave the air outlet; The external gas flows into the pressure relief hole from the air inlet, and flows into the air flow channel when the knob leaves the air outlet, thereby controlling the gas flow rate flowing into the air flow channel.

2. The air intake regulating structure of the negative pressure regulator according to claim 1, characterized in that: The valve body comprises a main pipe connected to the air flow channel and a pair of branch pipes, wherein the pair of branch pipes are located at two opposite sides of the main pipe.

3. The air intake regulating structure of the negative pressure regulator according to claim 1, characterized in that: The number of the air inlet holes is multiple, and the multiple air inlet holes are arranged on the convex cylinder at intervals.

4. The air intake regulating structure of the negative pressure regulator according to claim 1, characterized in that: It further includes a first airtight ring, which is clamped between the outer wall surface of the knob and the inner wall surface of the pressure relief nut.

5. The air intake regulating structure of the negative pressure regulator according to claim 1, characterized in that: It further comprises a second airtight ring, which is clamped between the outer wall surface of the pressure relief nut and the inner wall surface of the convex cylinder.

6. The air intake regulating structure of the negative pressure regulator according to claim 5, characterized in that: The pressure relief nut has a convex ring, and the second airtight ring abuts against one side of the convex ring.

7. The air intake regulating structure of the negative pressure regulator according to claim 1, characterized in that: An air flow gap is left between the rotating cover and the convex cylinder.

8. The air intake regulating structure of the negative pressure regulator according to claim 1, characterized in that: The pressure relief hole is adjacent to and communicated with the air inlet hole.

9. The air intake regulating structure of the negative pressure regulator according to claim 1, characterized in that: The rotary cover comprises a flange, and a ring groove is arranged on a side of the flange facing the valve body.

10. The air intake regulating structure of the negative pressure regulator according to claim 9, characterized in that: The valve body is provided with an annular rib corresponding to the annular groove, and a reflux gap is maintained between the annular rib and the annular groove.

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