TWM648924U - Air intake adjustment structure of negative pressure regulator - Google Patents

Abstract

This invention is an air intake adjustment structure of a negative pressure regulator, including the regulator body, a pressure relief nut and a rotating group. The regulator body includes a valve body and a convex tube connected to the valve body. The valve body has an air flow channel, and the convex tube has an installation hole and an air inlet hole connected to the air flow channel. The pressure relief nut is arranged in the installation hole and includes a pressure relief hole and an air outlet connected to the pressure relief hole. The rotation group includes a screw cap and a knob connected to the screw cap. The screw cap covers the convex tube and can rotate relative to the valve body. The knob is inserted in the pressure relief nut and is driven by the screw cap to selectively leave the air outlet; thereby Adjust the gas flow entering the air flow channel to reduce gas flow velocity and noise.

Description

Air intake adjustment structure of negative pressure regulator

The invention relates to a negative pressure regulator, in particular to an air intake adjustment structure of a negative pressure regulator.

A negative pressure meter is a device commonly used for treatment and medical care. It uses negative pressure to attract and stimulate acupuncture points on the skin surface to promote blood circulation and relieve discomfort, so as to regulate body functions.

Furthermore, when using a negative pressure meter, a negative pressure regulator is generally 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 the treatment environment.

In view of this, the author has devoted himself to research on the above-mentioned existing technology and cooperated with the application of academic theory to try his best to solve the above-mentioned problems, which has become the goal of the author's improvement.

One purpose of this creation is to provide an air inlet adjustment structure of a negative pressure regulator, thereby adjusting the gas flow entering the air flow channel, thereby reducing the gas flow rate and noise.

In order to achieve the above purpose, this invention is an air intake adjustment 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 tube connected to the valve body. The valve body has an air flow channel, and the convex tube has an installation hole and an air inlet hole connected to the air flow channel. The pressure relief nut is arranged in the installation hole and includes a pressure relief hole and an air outlet connected to the pressure relief hole. The rotation group includes a screw cap and a knob connected to the screw cap. The screw cap covers the convex tube and can rotate relative to the valve body. The knob is inserted in the pressure relief nut and is driven by the screw cap to selectively leave the air outlet; among them, External air flows from the air inlet hole into the pressure relief hole, and flows into the air flow channel when the knob leaves the air outlet, thereby controlling the gas flow into the air flow channel.

In an 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 on two opposite sides of the main pipe.

In an embodiment of the present invention, the number of air inlet holes is plural, and the plurality of air inlet holes are spaced on the convex tube.

In an embodiment of the present invention, the air inlet adjustment structure of the negative pressure regulator further includes a first air-tight ring, and the first air-tight ring is clamped between the outer wall surface of the knob and the inner wall surface of the pressure relief nut.

In an embodiment of the present invention, the air inlet adjustment structure of the negative pressure regulator further includes a second air-tight ring, and the second air-tight ring is clamped between the outer wall surface of the pressure relief nut and the inner wall surface of the convex cylinder.

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

In an embodiment of the invention, the pressure relief hole is connected adjacent to the air inlet hole.

In one embodiment of the invention, the screw cap includes a flange, and the flange is provided with an annular groove on a side facing the valve body.

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

Compared with the prior art, the negative pressure regulator of this invention includes the regulator body, a pressure relief nut and a rotating group; in addition, the knob of the rotating group is inserted into the pressure relief nut and is driven by the screw cap to relieve pressure. The air outlet of the nut extends and retracts to selectively leave the air outlet, thereby controlling the inflow and outflow of gas into the air flow channel, and adjusting the flow of external air into the valve body, thereby adjusting the negative pressure flowing into the negative pressure regulator. Pressure the air flow in the cup, thereby achieving the effect of reducing the gas flow rate and reducing noise, increasing the practicality of this creation.

1. 1a: Negative pressure regulator

2: Negative pressure cup

3: Negative pressure meter

10, 10a: Adjuster body

100, 100a: air flow channel

101a:Reflow gap

11, 11a: valve body

110a: Container

111:Supervisor

111a: Ring rib

112: In charge

12, 12a: convex tube

121, 121a: Installation holes

122, 122a: air inlet

20, 20a: Pressure relief nut

21, 21a: Pressure relief hole

22, 22a: air outlet

23:Protruding ring

30, 30a: Rotation group

300, 300a: air flow gap

301: Bottom gap

301a: Gap

31, 31a: screw cap

310a: Ring groove

311a: Flange

32, 32a: Knob

320:Gutter

40: First airtight ring

50:Second airtight ring

Figure 1 is a schematic diagram of the application of the negative pressure regulator of this invention.

Figure 2 is a schematic diagram of the three-dimensional appearance of the negative pressure regulator of this invention.

Figure 3 is a three-dimensional exploded schematic diagram of the negative pressure regulator of this invention.

Figure 4 is a combined cross-sectional view of the negative pressure regulator of this invention.

Figure 5 is a schematic diagram of the gas flow of the negative pressure regulator of this invention.

Figure 6 is a three-dimensional exploded schematic diagram of another embodiment of the air intake adjustment structure of the negative pressure regulator of the present invention.

Figure 7 is a combined cross-sectional view of another embodiment of the air intake adjustment structure of the negative pressure regulator of the present invention.

The detailed description and technical content of this creation are described below with the accompanying drawings. However, the attached drawings are only for reference and illustration and are not used to limit this creation.

Please refer to Figure 1, which is a schematic diagram of the application of the negative pressure regulator of this invention. The negative pressure regulator 1 of this 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 instrument 3, and the negative pressure regulator 1 is disposed between the negative pressure cup 2 and the negative pressure instrument 3. In addition, when the negative pressure meter 3 is running, negative pressure air will be generated and sent to the negative pressure cup 2 . The air pressure in the negative pressure cup 2 can be adjusted through the negative pressure regulator 1 to adjust the upper limit of the negative pressure in the negative pressure cup 2 .

It should be noted that the pressure in the negative pressure cup 2 can be adjusted through the negative pressure regulator 1 during the operation of the negative pressure cup 2, thereby reducing the noise during the operation of the negative pressure cup 2.

Please also refer to Figures 2 to 4, which are three-dimensional appearance diagrams, three-dimensional exploded diagrams and assembled cross-sectional views of the negative pressure regulator of this invention. The invention is an air intake adjustment structure of a negative pressure regulator 1 which includes a regulator body 10 , a pressure relief nut 20 and a rotating group 30 . The pressure relief nut 20 is provided 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 . A more detailed description of the air intake adjustment structure of the negative pressure regulator 1 is as follows.

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

In this embodiment, the valve body 11 includes a main pipe 111 and a pair of branch pipes 112 communicating with the air flow channel 100 . The pair of branch pipes 112 are located on two opposite sides of the main pipe 111, but the actual implementation is not limited to this implementation mode. In addition, the number of the air inlet holes 122 is plural. A plurality of air inlet holes 122 are arranged on the boss 12 at intervals.

The pressure relief nut 20 is disposed in the mounting hole 121 . The pressure relief nut 20 is a nut component 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 with the pressure relief hole 21 . Preferably, the pressure relief hole 21 is connected adjacent to the air inlet hole 122 .

Furthermore, the rotating group 30 includes a rotating cap 31 and a knob 32 connected to the rotating cap 31 . The screw cap 31 covers the boss 12 and can rotate relative to the valve body 11 .

The knob 32 is inserted into the pressure relief nut 20 , and is driven by the screw cap 31 to extend and retract at the air outlet 22 and selectively leave the air outlet 22 , thereby restricting access to the pressure relief nut 20 The gas in the air outlet 22 flows out. When the knob 32 leaves the air outlet 22 , the gas trapped in the pressure relief nut 20 flows into the air flow channel 100 .

Specifically, the air intake adjustment structure of the negative pressure regulator 1 further includes a first air sealing ring 40 and a second air sealing 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 .

In addition, 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 boss 12 . Preferably, the pressure relief nut 20 has a convex ring 23 . The second airtight ring 50 abuts one side of the convex ring 23 .

It is worth noting that when the rotating group 30 screws the pressure relief nut 20 through the knob 32, an airflow gap 300 will remain between the screw cap 31 and the boss 12. In addition, a bottom gap 301 is left between the bottom edge of the screw cap 31 and the valve body 11 . Accordingly, external air can flow into the airflow gap 300 from the bottom gap 301, then flow into the boss 12 from the airflow gap 300 through the air inlet hole 122, and then flow into the pressure relief nut through the pressure relief hole 21. 20 in.

Please refer to Figure 5 again, which is a schematic diagram of the gas flow of the negative pressure regulator of this invention. The negative pressure regulator 1 of this 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 screw cap 31 is rotated, and the bottom edge of the screw cap 31 will move away from the valve body 11 to enlarge the bottom gap 301 to facilitate the flow of more external air into the valve body 11 . Airflow clearance 300. Subsequently, the external air will flow into the boss 12 through the air inlet hole 122, and then flow into the pressure relief nut 20 through the pressure relief hole 21.

Furthermore, when the screw cap 31 rotates, the knob 32 will be driven away from the air outlet 22 and the pressure relief nut 20 will be retracted. At this time, the air flowing into the pressure relief nut 20 will flow out of the air outlet 22 and enter the valve body 11 .

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 adjust the gas flow rate entering the air flow channel 100 through the negative pressure regulator 1, thereby reducing the gas flow rate in the air flow channel 100 and reducing noise, thereby adjusting the negative pressure. The effect of the upper limit value.

Please refer to Figures 6 and 7 again, which are a three-dimensional exploded schematic diagram and a combined cross-sectional view of another embodiment of the air intake adjustment structure of the negative pressure regulator of the present invention. This embodiment is substantially the same as the previous embodiment. The air intake adjustment 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 boss 12a, and the valve body 11a has an air flow channel 100a. The boss 12a has a mounting hole 121a and an air inlet hole 122a. The pressure relief nut 20a includes a pressure relief hole 21a and an air outlet 22a. The rotating group 30a includes a rotating cap 31a and a knob 32a. In addition, the difference between this embodiment and the previous embodiment lies in the arrangement of the air flow path.

Specifically, the screw cap 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 side of the valve body 11a facing the pressure relief nut 20a A receiving groove 110a is provided on the surface, and an annular rib 111a is provided in the receiving groove 110a corresponding to the annular groove 310a. There is an airflow gap 300a between the screw cap 31a and the convex tube 12a.

In addition, when the screw cap 31a covers the boss 12a, the flange 311a of the screw cap 31a is placed in the accommodating groove 110a, and there will be a gap between the outer edge surface of the flange 311a and the inner wall surface of the accommodating groove 110a. 301a. In addition, a return gap 101a is maintained between the annular rib 111a and the annular groove 310a.

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

It should be noted that external air flows into the air flow channel 100a from the gap 301a, thereby reducing the upper limit of the negative pressure inside the negative pressure cup 2 (see also FIG. 1). Since the circulation path of the external air is narrow and narrow, the flow speed is relatively slow, so noise will not be generated due to hitting obstacles, so the effect of reducing noise can be achieved.

The above descriptions are only preferred embodiments of this invention and are not used to determine the patent scope of this invention. Other equivalent changes that apply the patent spirit of this invention should all fall within the patent scope of this invention.

1: Negative pressure regulator

10:Adjuster body

100:Air flow channel

11: Valve body

12:Protruding tube

121:Installation hole

122:Air intake hole

20: Pressure relief nut

21: Pressure relief hole

22:Air outlet

23:Protruding ring

30: Rotation group

300: Airflow gap

301: Bottom gap

31:screw cap

32: Knob

320:Gutter

40: First airtight ring

50:Second airtight ring

Claims (10)

An air intake adjustment structure of a negative pressure regulator includes: a regulator body, including a valve body and a convex tube connected to the valve body. The valve body has an air flow channel, and the convex tube has an air flow channel connected to the air flow channel. a mounting hole and an air inlet; a pressure relief nut disposed in the mounting hole, the pressure relief nut including a pressure relief hole and an air outlet connected to the pressure relief hole; and a rotating group including a screw cap and A knob is connected to the screw cap. The screw cap covers the boss and can rotate relative to the valve body. The knob is inserted into the pressure relief nut and is driven by the screw cap to selectively leave the air outlet. ; Wherein, external air flows from the air inlet hole into the pressure relief hole, 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. The air inlet adjustment structure of the negative pressure regulator as described in claim 1, wherein the valve body includes a main pipe and a pair of branch pipes connected to the air flow channel, and the pair of branch pipes are located on two opposite sides of the main pipe. The air inlet adjustment structure of the negative pressure regulator according to claim 1, wherein the number of the air inlet holes is plural, and the plurality of air inlet holes are spaced on the convex tube. The air inlet adjustment structure of the negative pressure regulator as described in claim 1 further includes a first air-tight ring, which is clamped between the outer wall surface of the knob and the inner wall surface of the pressure relief nut. between. The air inlet adjustment structure of the negative pressure regulator according to claim 1, further comprising a second airtight ring, the second airtight ring is clamped between the outer wall surface of the pressure relief nut and the inner wall surface of the boss. between. The air inlet adjustment structure of the negative pressure regulator according to claim 5, wherein the pressure relief nut has a convex ring, and the second airtight ring abuts one side of the convex ring. The air inlet adjustment structure of the negative pressure regulator as described in claim 1, wherein an airflow gap is left between the screw cap and the convex tube. The air inlet adjustment structure of the negative pressure regulator as described in claim 1, wherein the pressure relief hole is connected adjacent to the air inlet. The air inlet adjustment structure of the negative pressure regulator according to claim 1, wherein the screw cap includes a flange, and the flange is provided with an annular groove on a side facing the valve body. The air inlet adjustment structure of the negative pressure regulator according to claim 9, wherein the valve body is provided with an annular rib corresponding to the annular groove, and a return gap is maintained between the annular rib and the annular groove.

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