阅读说明：本技术 用于拔罐负压仪的调压阀 (Pressure regulating valve for cupping negative pressure instrument ) 是由 刘时达 刘柏樟 于 2019-10-09 设计创作，主要内容包括：本发明涉及一种用于拔罐负压仪的调压阀,包括调压阀旋盖和调压阀阀体,该调压阀阀体内部有金属螺母结构,该金属螺母结构上有数个螺母泄压孔；使用时将该调压阀旋盖拴紧,止挡该金属螺母结构上的螺母泄压孔流通,让该调压阀阀体内部为气密状态负压力道最大；当真空压力过大,旋转该调压阀旋盖使该螺母泄压孔与外部流通,使外部空气流通进调压阀阀体而达到调节负压力道的效果；该金属螺母结构组装座最外侧设有一消音盖组装座以组装消音盖,其中有流通空气的小孔以流通外部空气时在缓冲降低气音流通的音量；该调压阀阀体具有进行吸放空气的负压连通孔,并以快塞旋盖连通或塞堵该负压连通孔；另该调压阀阀体内设置有该过滤棉,以吸附空气中的杂质。(The invention relates to a pressure regulating valve for a cupping negative pressure instrument, which comprises a pressure regulating valve screw cap and a pressure regulating valve body, wherein a metal nut structure is arranged in the pressure regulating valve body, and a plurality of nut pressure relief holes are formed in the metal nut structure; when in use, the screw cover of the pressure regulating valve is fastened to stop the circulation of the nut pressure relief hole on the metal nut structure, so that the negative pressure inside the valve body of the pressure regulating valve is in an airtight state and is maximum; when the vacuum pressure is too high, the screw cap of the pressure regulating valve is rotated to enable the pressure relief hole of the nut to be communicated with the outside, so that the outside air is communicated into the valve body of the pressure regulating valve to achieve the effect of regulating the negative pressure channel; the outermost side of the metal nut structure assembling seat is provided with a silencing cover assembling seat for assembling a silencing cover, wherein small holes for circulating air are arranged in the silencing cover for buffering and reducing the volume of ventilation sound when external air circulates; the valve body of the pressure regulating valve is provided with a negative pressure communicating hole for sucking and discharging air, and is communicated or plugged by a quick plugging screw cap; in addition, the valve body of the pressure regulating valve is internally provided with the filter cotton to adsorb impurities in the air.)

1. A pressure regulating valve for a cupping negative pressure instrument, comprising:

the device comprises a pressure regulating valve screw cap, a metal screw structure, a silencing cap assembling seat, a metal nut structure, a pressure regulating valve body, a quick plug screw cap, filter cotton and a filter cotton fixing cap; the pressure regulating valve body is internally provided with a metal nut structure assembling seat which is assembled with the metal nut structure into a whole, the pressure regulating valve screw cap is assembled with the metal screw structure into a whole, the pressure regulating valve screw cap and the pressure regulating valve body can be rotationally combined through the metal nut structure and the metal screw structure, the pressure regulating valve screw cap can be rotated to adjust the air flow quantity in the pressure regulating valve body so as to adjust the action of a negative pressure channel, the silencing cap can be combined with the silencing cap assembling seat and cover a stop ring circulation hole on the metal nut structure assembling seat so as to reduce the air sound generated when the air flows to the interior of the pressure regulating valve body, the quick plug screw cap is covered on the pressure regulating valve body and is provided with a negative pressure communication hole for an air suction channel, and the quick plug screw cap is rotated to adjust the negative pressure communication hole to be communicated or plugged so that the quick plug screw cap does not need to be taken down to avoid loss, the filter cotton is arranged in a filter tank of the pressure regulating valve body of the pressure regulating valve, and is fixed in the pressure regulating valve body by a filter cotton fixing cover, so that the air sucked by the negative pressure communication hole passes through the filter cotton, the essential oil and the body oil are adsorbed on the filter cotton and then discharged, and the suction force is prevented from being damaged.

2. The pressure-regulating valve for use in a cupping negative pressure gauge, as set forth in claim 1, wherein the pressure-regulating valve is connected in series between the cupping negative pressure gauge and the negative pressure cup in use, so that the cupping negative pressure gauge first passes through the pressure-regulating valve and then into the negative pressure cup to pump air out to generate negative pressure, and the strength of the negative pressure inside the negative pressure cup can be controlled by rotating the cap of the pressure-regulating valve.

3. The pressure-regulating valve for cupping negative pressure instrument of claim 2, wherein a plurality of nut pressure-releasing holes are formed around the metal nut structure inside the metal nut structure assembly seat, the cap of the pressure-regulating valve is rotatably assembled with the valve body of the pressure-regulating valve to the tightest, the metal screw structure can block the nut pressure-releasing holes of the metal nut structure, so that air cannot flow into the valve body of the pressure-regulating valve, the inside of the valve body of the pressure-regulating valve is airtight, the negative pressure path is maximized, the cap of the pressure-regulating valve is unscrewed to make the metal screw structure slowly rotate upwards, and the nut pressure-releasing holes of the metal nut structure are exposed, so that a small amount of air flows into the valve body from the nut pressure-releasing holes, thereby affecting the negative pressure path of the cup body of the cupping negative pressure instrument, and changing the size of the exposed nut pressure-releasing holes by rotating the cap of the pressure-, thereby influencing the amount of air flowing into the valve body of the pressure regulating valve and further adjusting the negative pressure.

4. The pressure-regulating valve for a cupping negative pressure gauge according to claim 3, wherein the metal nut structure assembly seat is provided therein with a metal nut structure placement hole for assembly and insertion of the metal nut structure, and the metal nut structure placement hole is provided with a placement hole ventilation hole communicating with the nut ventilation hole of the metal nut structure, so that air can smoothly ventilate into the pressure-regulating valve body.

5. The pressure-regulating valve for cupping negative pressure instrument of claim 4, wherein the metal nut structure assembly seat is provided with a screw cap stop ring, the screw cap of the pressure-regulating valve can be rotated downward until it abuts against the screw cap stop ring, and can not be rotated downward any more, the screw cap of the pressure-regulating valve can be rotated within a limited range to adjust the negative pressure, and the screw cap stop ring is provided with a stop ring through hole communicated with the nut pressure-releasing hole of the metal nut structure inside the valve body of the pressure-regulating valve, for smooth air circulation inside the valve body of the pressure-regulating valve.

6. The pressure-regulating valve for cupping negative pressure instrument of claim 3, wherein the metal nut structure assembly seat is provided with a silencing cover assembly seat for assembling the silencing cover, so that the stop ring flow hole of the screw cover stop ring is in the space between the silencing cover and the silencing cover assembly seat, and air flows from the gap between the silencing cover and the pressure-regulating valve screw cover to the space between the silencing cover and the silencing cover assembly seat for buffering and then flows to the nut pressure-releasing hole of the metal nut structure at the innermost layer of the pressure-regulating valve body, so as to reduce the air sound generated by rapid air circulation when negative pressure is relieved.

7. The pressure-regulating valve for a cupping negative pressure instrument as claimed in claim 1, wherein the pressure-regulating valve body is provided with a plurality of the negative pressure communication holes, each of the negative pressure communication holes is externally provided with a quick-plug cap combination screw, and the quick-plug cap is internally screwed and assembled on the quick-plug cap combination screw to plug the unused negative pressure communication hole, thereby preventing air from flowing into the pressure-regulating valve body from the unused negative pressure communication hole to affect negative pressure massage.

8. The pressure-regulating valve for negative pressure instrument for cupping of claim 7, wherein the quick-plug cap is provided with a plurality of sucking/discharging communication holes for communicating with the valve body of the pressure-regulating valve, and when the quick-plug cap is unscrewed by the user, the negative communication hole of the valve body of the pressure-regulating valve can communicate with the sucking/discharging communication hole of the quick-plug cap to perform negative pressure sucking/discharging massage.

9. The pressure regulating valve for negative pressure cupping apparatus as recited in claim 7, wherein the quick-plug cap is disposed inside the quick-plug cap, and when the quick-plug cap is rotated to the tightest, the quick-plug cap blocks the negative pressure communication hole to achieve the effect of plugging.

10. The pressure regulating valve for cupping negative pressure instrument as recited in claim 7, wherein a quick-plug gasket groove is formed between the quick-plug cap and the negative pressure communication hole, and a soft pressure-relief-preventing gasket is disposed in the quick-plug gasket groove to prevent the negative pressure from being affected by a gap generated when the quick-plug plugs the negative pressure communication hole.

11. The pressure-regulating valve for cupping negative pressure instrument as recited in claim 1, wherein the metal nut structure assembly seat is detachably disposed above the pressure-regulating valve filtering tank of the pressure-regulating valve body, and the metal nut structure assembly seat can be separated from the pressure-regulating valve filtering tank to wash the pressure-regulating valve filtering tank with water or replace the filter cotton.

12. The pressure regulating valve for a cupping negative pressure gauge of claim 11, wherein the filter cotton fixing cap is provided with a plurality of holes, so that air passes through the filter cotton to adsorb essential oil and body fat, and the rest air passes through the annular holes of the filter cotton fixing cap and flows out from the middle, thereby achieving the filtering effect.

13. The pressure-regulating valve for a cupping negative pressure gauge according to claim 11, wherein a silicone gasket is disposed around the metal nut structure assembly seat to prevent a gap from being generated at an assembly joint after the metal nut structure assembly seat is mounted in the pressure-regulating valve body.

Technical Field

The invention relates to the technical field of health-care devices, in particular to a pressure regulating valve for a cupping negative pressure instrument.

Background

The cupping negative pressure instrument is a health care device with simple operation, which is widely popularized in the market at present, the operation of the cupping negative pressure instrument is that a cup is connected by a communicating pipe, an air pump inside the instrument operates to achieve the effect of continuously sucking air and vacuum, and a pressure release valve releases a small amount of vacuum pressure when air suction stops, so that the vacuum pressure in the cup body generates a tight and loose action, thereby achieving the massage effect on a human body.

Although the conventional cupping negative pressure instrument can achieve a certain massage effect, in practical application, because different users have different feelings and achievement effects on the negative pressure, the conventional cupping negative pressure instrument cannot meet the requirements of different users, and needs to be improved to obtain a method for adjusting the negative pressure according to different preferences of the users.

In the operation process, the conventional cupping negative pressure instrument usually has a plurality of negative pressure communication holes to simultaneously connect a plurality of communication pipes with the cupping cup for negative pressure operation, and when some negative pressure communication holes do not need to be operated, the soft plug body is usually used for plugging.

In addition, in the operation process of negative pressure massage, because the body of the user is difficult to generate moisture or needs to apply essential oil, the conventional cupping negative pressure instrument is easy to suck the substances to influence the suction force during the suction and release actions, and therefore, the normal use of the body needs to be maintained by filtering.

Accordingly, the conventional techniques still have disadvantages and need to be improved.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, provides the pressure regulating valve for the cupping negative pressure instrument, solves the problem that the requirements of different users cannot be met, improves the massage effect, reduces the machine body faults, is convenient to use and improves the satisfaction degree of the users.

The technical scheme for realizing the purpose is as follows:

the invention provides a pressure regulating valve for a cupping negative pressure instrument, which comprises:

the device comprises a pressure regulating valve screw cap, a metal screw structure, a silencing cap assembling seat, a metal nut structure, a pressure regulating valve body, a quick plug screw cap, filter cotton and a filter cotton fixing cap; the pressure regulating valve body is internally provided with a metal nut structure assembling seat which is assembled with the metal nut structure into a whole, the pressure regulating valve screw cap is assembled with the metal screw structure into a whole, the pressure regulating valve screw cap and the pressure regulating valve body can be rotationally combined through the metal nut structure and the metal screw structure, the pressure regulating valve screw cap can be rotated to adjust the air flow quantity in the pressure regulating valve body so as to adjust the action of a negative pressure channel, the silencing cap can be combined with the silencing cap assembling seat and cover a stop ring circulation hole on the metal nut structure assembling seat so as to reduce the air sound generated when the air flows to the interior of the pressure regulating valve body, the quick plug screw cap is covered on the pressure regulating valve body and is provided with a negative pressure communication hole for an air suction channel, and the quick plug screw cap is rotated to adjust the negative pressure communication hole to be communicated or plugged so that the quick plug screw cap does not need to be taken down to avoid loss, the filter cotton is arranged in a filter tank of the pressure regulating valve body of the pressure regulating valve, and is fixed in the pressure regulating valve body by a filter cotton fixing cover, so that the air sucked by the negative pressure communication hole passes through the filter cotton, the essential oil and the body oil are adsorbed on the filter cotton and then discharged, and the suction force is prevented from being damaged.

The invention adopts the pressure regulating valve for the cupping negative pressure instrument, the metal screw structure in the screw cap of the pressure regulating valve and the metal nut structure in the valve body of the pressure regulating valve can be driven to be connected to be tightest by rotating the screw cap of the pressure regulating valve, the metal screw structure can block the small hole on the metal nut structure in the valve body of the pressure regulating valve in the tightest state, so that the air can not flow to the valve body of the pressure regulating valve, the negative pressure channel can not be maintained to be strongest, when the metal screw structure and the metal nut structure are loosened, the metal screw structure moves upwards to expose the small hole of the metal nut structure out of the gap, so that the air can flow to the interior of the valve body of the pressure regulating valve through the gap, further the negative pressure channel is reduced, the amount of the air flowing to the interior of the pressure regulating valve body is controlled by rotating the screw cap of the pressure regulating valve, the size of the negative pressure channel is adjusted, the massage effect is improved, the body faults are reduced, the use is convenient, and the satisfaction degree of a user is improved.

The invention is further improved in that the pressure regulating valve is connected in series between the cupping negative pressure instrument and the negative pressure cup body when in use, so that the cupping negative pressure instrument firstly passes through the pressure regulating valve and then enters the negative pressure cup body to pump air out to generate negative pressure, and the strength of the negative pressure inside the negative pressure cup body can be controlled by rotating the rotary cover of the pressure regulating valve.

The invention is further improved for the pressure regulating valve of the cupping negative pressure instrument, the periphery of the metal nut structure in the metal nut structure assembling seat is provided with a plurality of nut pressure relief holes, the screw cover of the pressure regulating valve and the valve body of the pressure regulating valve are combined to be the tightest in rotation, the nut pressure relief hole of the metal nut structure can be blocked by the metal screw structure, so that air can not flow into the valve body of the pressure regulating valve, the inner part of the valve body of the pressure regulating valve is in an airtight state, the negative pressure path is maximized, the screw cover of the pressure regulating valve is loosened to enable the metal screw structure to slowly rotate upwards, the nut pressure relief hole of the metal nut structure is exposed, and trace air flows into the valve body of the pressure regulating valve from the nut pressure relief hole, thereby the negative pressure path of the cup body of the cupping negative pressure instrument is influenced, the exposed size of the nut hole is changed by rotating the screw cover of the pressure regulating valve, thereby, thereby adjusting the negative pressure.

The invention further improves the pressure regulating valve for the cupping negative pressure instrument, a metal nut structure placing hole is arranged in the metal nut structure assembling seat and used for assembling and plugging the metal nut structure, and the metal nut structure placing hole is provided with a placing hole circulating hole communicated with the nut pressure releasing hole of the metal nut structure, so that air can be smoothly circulated into the pressure regulating valve body.

The invention further improves the pressure regulating valve for the cupping negative pressure instrument, the metal nut structure assembling seat is provided with a spiral cover stop ring, the spiral cover of the pressure regulating valve can rotate downwards until the spiral cover is tightly close to the spiral cover stop ring and can not be screwed downwards, the spiral cover of the pressure regulating valve can rotate within a limited range to regulate the negative pressure, and the spiral cover stop ring is provided with a stop ring circulation hole communicated with the nut pressure relief hole of the metal nut structure in the valve body of the pressure regulating valve, so that air can smoothly circulate to the interior of the valve body of the pressure regulating valve.

The invention is further improved for the pressure regulating valve of the cupping negative pressure instrument, the metal nut structure assembling seat is provided with a silencing cover assembling seat which is used for assembling the silencing cover, the stop ring flowing hole of the stop ring of the screw cover is arranged in the space between the silencing cover and the silencing cover assembling seat, so that air flows from the gap between the silencing cover and the screw cover of the pressure regulating valve to the space between the silencing cover and the silencing cover assembling seat for buffering, and then flows to the nut pressure releasing hole of the metal nut structure at the innermost layer of the valve body of the pressure regulating valve, thereby reducing the air sound generated by rapid air circulation in negative pressure relief.

The invention is further improved for the pressure regulating valve of the cupping negative pressure instrument, the valve body of the pressure regulating valve is provided with a plurality of negative pressure communicating holes, each negative pressure communicating hole is externally provided with a quick plug and screw cap combined thread, the quick plug and screw cap is screwed and assembled on the quick plug and screw cap combined thread by internal threads to plug the unused negative pressure communicating holes, and the negative pressure massage is prevented from being influenced by the fact that air flows into the valve body of the pressure regulating valve from the unused negative pressure communicating holes.

The invention is further improved in that the quick plug screw cap is provided with a plurality of suction and discharge communication holes for communicating the valve body of the pressure regulating valve, when a user loosens the quick plug screw cap, the negative pressure communication hole of the valve body of the pressure regulating valve can be communicated with the suction and discharge communication holes of the quick plug screw cap for negative pressure suction and discharge massage.

The invention further improves the pressure regulating valve for the cupping negative pressure instrument, wherein a quick plug is arranged in the quick plug screw cap, and when the quick plug screw cap rotates to the tightest degree, the quick plug can plug the negative pressure communication hole so as to achieve the effect of plugging.

The invention further improves the pressure regulating valve for the cupping negative pressure instrument, wherein a quick-plug structure gasket groove is arranged between the quick-plug screw cap and the negative pressure communication hole, and a soft pressure relief preventing gasket is arranged in the quick-plug structure gasket groove to prevent the negative pressure from being influenced by the generation of a gap when the quick-plug blocks the negative pressure communication hole.

The invention is further improved in that the metal nut structure assembly seat is detachably arranged above the pressure regulating valve filter tank of the pressure regulating valve body, and can be separated from the pressure regulating valve filter tank so as to clean the pressure regulating valve filter tank with water or replace the filter cotton.

The invention further improves the pressure regulating valve for the cupping negative pressure instrument, the filter cotton fixing cover is provided with a plurality of holes, so that the air firstly passes through the filter cotton to adsorb essential oil and body oil, and the residual air passes through the annular holes of the filter cotton fixing cover and then flows out from the middle, thereby achieving the filtering effect.

The invention further improves the pressure regulating valve for the cupping negative pressure instrument, and a silica gel washer is arranged around the metal nut structure assembling seat, so that after the metal nut structure assembling seat is arranged in the valve body of the pressure regulating valve, gaps are prevented from being generated at the assembling joint.

Drawings

Fig. 1 is an exploded perspective view of a pressure regulating valve for a negative pressure cupping apparatus according to the present invention.

Fig. 2 is a perspective combination view of a pressure regulating valve for a cupping negative pressure instrument according to the present invention.

Fig. 3 is a sectional exploded view of a pressure regulating valve for a negative pressure cupping apparatus according to the present invention.

Fig. 4 is a sectional combination view of the pressure regulating valve for the negative pressure cupping apparatus according to the present invention.

Fig. 5 is a using situation diagram of the pressure regulating valve for the cupping negative pressure instrument.

Detailed Description

The invention is further described with reference to the following figures and specific examples.

The invention adopts the pressure regulating valve for the cupping negative pressure instrument, the metal screw structure in the screw cap of the pressure regulating valve and the metal nut structure in the valve body of the pressure regulating valve can be driven to be connected to be tightest by rotating the screw cap of the pressure regulating valve, the metal screw structure can block the small hole on the metal nut structure in the valve body of the pressure regulating valve in the tightest state, so that the air can not flow to the valve body of the pressure regulating valve, the negative pressure channel can not be maintained to be strongest, when the metal screw structure and the metal nut structure are loosened, the metal screw structure moves upwards to expose the small hole of the metal nut structure out of the gap, so that the air can flow to the interior of the valve body of the pressure regulating valve through the gap, further the negative pressure channel is reduced, the amount of the air flowing to the interior of the pressure regulating valve body is controlled by rotating the screw cap of the pressure regulating valve, the size of the negative pressure channel is adjusted, the massage effect is improved, the body faults are reduced, the use is convenient, and the satisfaction degree of a user is improved. The pressure regulating valve for a cupping negative pressure instrument according to the present invention will be described with reference to the accompanying drawings.

Referring to fig. 1, fig. 1 is an exploded perspective view of a pressure regulating valve for a cupping negative pressure instrument according to the present invention. The pressure regulating valve for a cupping negative pressure instrument according to the present invention will be described with reference to fig. 1.

Referring to fig. 1 to 4, the pressure regulating valve 100 for a cupping negative pressure instrument according to the present invention is divided into four components, including a pressure regulating valve cover 1, a pressure regulating valve body 2, a metal nut structure 3 and a silencing cover 4.

In a preferred embodiment of the present invention, the pressure regulating valve body 2 is provided with a pressure regulating valve filtering tank 22, a metal nut structure assembly seat 21 is provided above the pressure regulating valve filtering tank 22, so that the metal nut structure 3 is tightly mounted in the metal nut structure placement hole 211 in the metal nut structure assembly seat 21, and cannot be removed after being placed, and is integrated with the metal nut structure assembly seat 21, and the metal nut structure 3 is provided with a plurality of nut pressure relief holes 31 communicated with the placement hole flow holes 212 of the metal nut structure placement hole 211.

Furthermore, the user inserts the metal screw structure 12 disposed at the bottom of the cover 1 into the metal nut structure 3 mounted in the seat 21, and rotates the cover 1 to drive the metal screw structure 12 to screw into the metal nut structure 3, so that the interior of the valve body 2 is airtight.

Furthermore, the user covers the silencing cover 4 and assembles the silencing cover assembly seat 215 arranged on the metal nut structure assembly seat 21, so that the cover rim 11 of the pressure regulating valve cover 1 and the stop ring flow hole 214 of the metal nut structure assembly seat 21 are positioned in the space between the silencing cover 4 and the silencing cover assembly seat 215, thereby reducing the air sound generated by the air flowing to the interior of the pressure regulating valve body 2.

Referring to fig. 5, a user connects a communication pipe 5 in series to the negative pressure communication hole 23 of the pressure regulating valve body 2 covering the noise reduction cover 4, connects the other end of the communication pipe 5 below in series to a negative pressure instrument (not shown), and connects a plurality of negative pressure cup bodies (not shown) in series to the same number of communication pipes 5 through the plurality of negative pressure communication holes 23 around the pressure regulating valve body 2, so that the pressure regulating valve 100 is connected between the negative pressure cup bodies and the negative pressure instrument.

Furthermore, the outside of the negative pressure communication hole 23 is covered with a quick plug screw cap 6, so that the user can rotate the quick plug screw cap 6 to adjust the communication or plugging of the negative pressure communication hole 23, so that the quick plug screw cap 6 can be operated without being taken down, thereby avoiding the problem that the soft plug body adopted in the prior art is easy to lose.

Furthermore, each negative pressure communication hole 23 is provided with a quick plug cap combination screw 231, and an internal thread 61 is arranged in the quick plug cap 6, so that the quick plug cap 6 can be screwed and assembled on the quick plug cap combination screw 231 to plug the unused negative pressure communication hole 23, and air can be prevented from flowing into the pressure regulating valve body 2 from the unused negative pressure communication hole 23 to affect the negative pressure massage.

Specifically, the quick-plug screw cap 6 is provided with a plurality of suction/discharge communication holes 62 for communicating with the pressure regulating valve body 2, when the quick-plug screw cap 6 is loosened by a user, the negative pressure communication hole 23 of the pressure regulating valve body 2 can communicate with the suction/discharge communication hole 62 of the quick-plug screw cap 6 to perform negative pressure suction/discharge massage.

Specifically, the quick plug 63 is disposed inside the quick plug screw cap 6, and when the quick plug screw cap 6 is rotated to the tightest position, the quick plug 63 can plug the negative pressure communication hole 23, so as to achieve the effect of plugging.

Preferably, a gasket groove 64 of quick plug structure is provided between the quick plug screw cap 6 and the negative pressure communication hole 23, and a soft pressure-release-preventing gasket 65 is provided in the gasket groove 64 of quick plug structure to prevent the negative pressure from being affected by the gap generated when the quick plug 63 plugs the negative pressure communication hole 23.

Furthermore, the filter cotton 7 is disposed in the pressure regulating valve filtering tank 22, and the filter cotton 7 is fixed in the pressure regulating valve body 2 by the filter cotton fixing cover 221, so that the air sucked into the negative pressure communicating hole 23 flows through the filter cotton 7, and the essential oil and the body fat are adsorbed on the filter cotton 7 and then discharged, thereby preventing the suction force of the pressure regulating valve 100 from being reduced.

Specifically, the metal nut structure assembly seat 21 is detachably disposed above the pressure regulating valve filtering tank 22 of the pressure regulating valve body 2, so that a user can separate the metal nut structure assembly seat 21 from the pressure regulating valve filtering tank 22 to wash the pressure regulating valve filtering tank 22 with water or replace the filter cotton 7.

Preferably, the filter cotton fixing cover 221 is provided with a plurality of annular holes 222, so that air firstly passes through the filter cotton 7 to adsorb essential oil and body fat, and the rest air passes through the annular holes 222 of the filter cotton fixing cover 221 and then is sucked into the negative pressure instrument through the middle circular hole 223 to achieve the filtering effect.

Preferably, a silicone washer 24 is disposed around the metal nut structure assembly seat 21, so that the metal nut structure assembly seat 21 prevents a gap from being generated at an assembly joint after being installed in the pressure regulating valve body 2.

The specific operation mode of the practical implementation of the using method provided by the invention is as follows:

the user starts the negative pressure instrument, the negative pressure instrument draws out the air in the negative pressure cup through the communication tube 5 and the pressure regulating valve 100, so that the inside of the negative pressure cup is in a negative pressure state, and each part of the body is covered by the negative pressure cup for negative pressure rhythmic massage, the screw cap 1 of the pressure regulating valve is rotated during the use process to drive the metal screw structure 12 to rotate upwards in the metal nut structure 3, and the nut pressure relief hole 31 originally blocked by the metal screw structure 12 is slowly exposed, so that the air flows from the flow gap 41 between the silencing cover 4 and the pressure regulating valve screw cap 1 to the stop ring flow hole 214 arranged on the screw cap stop ring 213 of the metal nut structure assembly seat 21, then flows to the placing hole flow hole 212, finally flows from the nut pressure relief hole 31 to the pressure regulating valve body 2 in a micro-flow manner, and further influences the negative pressure passage of the negative pressure instrument from the pressure regulating valve 100 to the inside of the negative pressure cup, the user can control the upward rotation height of the metal screw structure 12 by rotating the screw cap 1 of the pressure regulating valve, so as to influence the exposure degree of the pressure relief hole 31 of the nut, and further adjust the negative pressure in the negative pressure cup;

after the use, the user can take off the silencing cover 4, disassemble the pressure regulating valve cover 1 from the pressure regulating valve body 2 in a rotating way, clean the three components and remove the dirt inside, so as to facilitate the next use.

While the present invention has been described in detail and with reference to the embodiments thereof as illustrated in the accompanying drawings, it will be apparent to one skilled in the art that various changes and modifications can be made therein. Therefore, certain details of the embodiments are not to be interpreted as limiting, and the scope of the invention is to be determined by the appended claims.