Pressure regulating valve for cupping negative pressure device

Abstract

The present invention relates to a pressure regulating valve for a cupping negative pressure instrument, which includes a pressure regulating valve screw cap and a pressure regulating valve body. There is a metal nut structure inside the pressure regulating valve body, and there are several nut pressure relief holes on the metal nut structure; during use, the pressure regulating valve screw cap is tightened to block the circulation of the nut pressure relief holes on the metal nut structure, so that the inside of the pressure regulating valve body is in an airtight state and the negative pressure channel is maximized; when the vacuum pressure is too high, rotate the pressure regulating valve screw cap to make the nut pressure relief holes communicate with the outside, so that external air flows into the pressure regulating valve body to achieve the effect of adjusting the negative pressure channel; a silencer cover assembly seat is provided on the outermost side of the metal nut structure assembly seat to assemble a silencer cover, and there are small holes for circulating air to buffer and reduce the volume of air sound when circulating external air; the pressure regulating valve body has a negative pressure communication hole for sucking and discharging air, and the negative pressure communication hole is connected or blocked by a quick plug screw cap; in addition, a filter cotton is arranged inside the pressure regulating valve body to adsorb impurities in the air.

Description

Technical Field

[0001] The present invention relates to the technical field of health care devices, and particularly refers to a pressure regulating valve for a cupping negative pressure instrument. Background Art

[0002] A cupping negative pressure instrument is a health care device with simple operation and has been widely promoted on the market. The operation of the cupping negative pressure instrument is to connect the cupping cup through a connecting pipe, and the internal air pump of the instrument operates to achieve a continuous suction vacuum effect, and the pressure relief valve discharges a small amount of vacuum pressure when the suction stops, so that the vacuum pressure in the cupping cup body produces a tightening and relaxing action, thereby achieving a massage effect on the human body.

[0003] Although the conventional cupping negative pressure instrument can achieve a certain massage effect, in actual use, because different users have different feelings and achieved effects on the negative pressure, the conventional cupping negative pressure instrument cannot meet the needs of different users, and thus must be improved to obtain a method for adjusting the negative pressure according to the different preferences of users.

[0004] During the operation process, the conventional cupping negative pressure instrument usually has a plurality of negative pressure connecting holes to simultaneously connect multiple connecting pipes and the cupping cup for negative pressure operation. When some negative pressure connecting holes do not need to act, they are usually blocked with a soft plug. Since the soft plug is not a structure of the conventional cupping negative pressure instrument, it is very easy to be lost during use or storage, and it takes time to obtain a substitute.

[0005] In addition, during the operation of negative pressure massage, since the user's body will inevitably produce moisture or need to apply essential oil, when the conventional cupping negative pressure instrument performs the suction and release actions, it is very easy to inhale these substances and affect the suction, so it is necessary to filter them to maintain the normal use of the machine.

[0006] It can be seen that the conventional technology still has disadvantages and needs to be studied and improved by the industry. Summary of the Invention

[0007] The purpose of the present invention is to overcome the defects of the prior art, provide a pressure regulating valve for a cupping negative pressure instrument, solve the problem of not being able to meet the needs of different users, improve the massage efficacy, reduce the machine failure, facilitate use, and improve the satisfaction of users.

[0008] The technical solution to achieve the above purpose is:

[0009] The present invention provides a pressure regulating valve for a cupping negative pressure instrument, including:

[0010] Pressure regulating valve screw cap, metal screw structure, silencer cap, silencer cap assembly seat, metal nut structure, pressure regulating valve body, quick plug screw cap, filter cotton and filter cotton fixing cap; A metal nut structure assembly seat is provided inside the pressure regulating valve body, and the metal nut structure assembly seat is assembled with the metal nut structure as a whole. The pressure regulating valve screw cap and the metal screw structure are combined as a whole. Through the metal nut structure and the metal screw structure, the pressure regulating valve screw cap and the pressure regulating valve body can be rotationally combined. Rotating the pressure regulating valve screw cap can adjust the air flow rate inside the pressure regulating valve body to perform the action of adjusting the negative pressure channel. The silencer cap can be combined with the silencer cap assembly seat and cover the stop ring flow hole on the metal nut structure assembly seat to reduce the air sound generated when air flows into the pressure regulating valve body. The quick plug screw cap covers the negative pressure communication hole provided on the pressure regulating valve body for the air suction and discharge channel. By rotating the quick plug screw cap, the negative pressure communication hole can be adjusted to be connected or blocked, so that the quick plug screw cap does not need to be removed to avoid loss. The filter cotton is in the pressure regulating filter slot of the pressure regulating valve body and is fixed in the pressure regulating valve body with a filter cotton fixing cap, so that the air inhaled through the negative pressure communication hole passes through the filter cotton, adsorbs essential oil and body oil on the filter cotton and then discharges, preventing the suction force from being damaged;

[0011] The pressure regulating valve body is provided with a plurality of the negative pressure communication holes, and a quick plug screw cap combination thread is provided outside each of the negative pressure communication holes, so that the quick plug screw cap is screwed into and assembled on the quick plug screw cap combination thread with an internal thread to block the unused negative pressure communication hole and prevent air from flowing into the pressure regulating valve body through the unused negative pressure communication hole, affecting negative pressure massage;

[0012] The metal nut structure assembly seat is detachably arranged above the pressure regulating filter slot of the pressure regulating valve body, and the metal nut structure assembly seat can be separated from the pressure regulating filter slot to wash the pressure regulating filter slot with water or replace the filter cotton;

[0013] A silica gel gasket is arranged around the metal nut structure assembly seat, so that after the metal nut structure assembly seat is installed in the pressure regulating valve body, gaps at the assembly joint are prevented.

[0014] The present invention adopts a pressure regulating valve for a cupping negative pressure instrument. By rotating the cover of the pressure regulating valve, the metal screw structure inside the cover of the pressure regulating valve can be driven to rotate and engage with the metal nut structure inside the valve body of the pressure regulating valve until it is tightened to the maximum. In the tightened state, the metal screw structure can block the small hole on the metal nut structure inside the valve body of the pressure regulating valve, preventing air from flowing into the valve body of the pressure regulating valve, so that the negative pressure channel remains the strongest without being affected. When the metal screw structure and the metal nut structure are loosened, the metal screw structure will move upward, exposing a gap in the small hole of the metal nut structure, allowing air to flow through the gap into the valve body of the pressure regulating valve, thereby reducing the negative pressure channel. Furthermore, by rotating the cover of the pressure regulating valve, the amount of air flowing into the valve body of the pressure regulating valve can be controlled, adjusting the size of the negative pressure channel, solving the problem of not being able to meet the needs of different users, enhancing the massage effect, reducing machine failures, being convenient to use, and improving user satisfaction.

[0015] A further improvement of the pressure regulating valve for a cupping negative pressure instrument according to the present invention is that when in use, the pressure regulating valve is connected in series between the cupping negative pressure instrument and the negative pressure cup body, so that the cupping negative pressure instrument first passes through the pressure regulating valve and then to the negative pressure cup body to extract air to generate negative pressure, and the strength of the negative pressure channel inside the negative pressure cup body can be controlled by rotating the cover of the pressure regulating valve.

[0016] A further improvement of the pressure regulating valve for a cupping negative pressure instrument according to the present invention is that a plurality of nut pressure relief holes are provided around the metal nut structure inside the assembly seat of the metal nut structure. When the cover of the pressure regulating valve and the valve body of the pressure regulating valve are rotated and combined to the tightest state, the metal screw structure can block the nut pressure relief holes of the metal nut structure, preventing air from flowing into the valve body of the pressure regulating valve, making the inside of the valve body of the pressure regulating valve in an airtight state, maximizing the negative pressure channel. Loosening the cover of the pressure regulating valve causes the metal screw structure to slowly rotate upward, and the nut pressure relief holes of the metal nut structure are exposed, allowing a small amount of air to flow through the nut pressure relief holes into the valve body of the pressure regulating valve, thereby affecting the negative pressure channel of the cupping negative pressure instrument for extracting the negative pressure cup body. By rotating the cover of the pressure regulating valve, the size of the exposed nut pressure relief holes is changed, thereby affecting the amount of air flowing into the valve body of the pressure regulating valve, and further adjusting the negative pressure channel.

[0017] A further improvement of the pressure regulating valve for a cupping negative pressure instrument according to the present invention is that a metal nut structure placement hole is provided inside the assembly seat of the metal nut structure for assembling and inserting the metal nut structure, and the placement hole is provided with a placement hole flow-through hole communicating with the nut pressure relief hole of the metal nut structure, so that air can smoothly flow into the valve body of the pressure regulating valve.

[0018] A further improvement of the pressure regulating valve for a cupping negative pressure instrument according to the present invention lies in that the metal nut structure assembly seat is provided with a rotary cover stop ring, which enables the rotary cover of the pressure regulating valve to rotate downward until it abuts against the rotary cover stop ring and then cannot be screwed in further, allowing the rotary cover of the pressure regulating valve to rotate within a limited range to adjust the negative pressure channel. Moreover, the rotary cover stop ring is provided with a stop ring flow-through hole communicating with the nut pressure relief hole of the metal nut structure inside the valve body of the pressure regulating valve, for allowing air to smoothly flow into the interior of the valve body of the pressure regulating valve.

[0019] A further improvement of the pressure regulating valve for a cupping negative pressure instrument according to the present invention lies in that the metal nut structure assembly seat is provided with a silencer cover assembly seat for assembling the silencer cover, such that the stop ring flow-through hole of the rotary cover stop ring is located in the space between the silencer cover and the silencer cover assembly seat, enabling air to flow from the gap between the silencer cover and the rotary cover of the pressure regulating valve into the space between the silencer cover and the silencer cover assembly seat for buffering, and then flowing into the nut pressure relief hole of the metal nut structure at the innermost layer of the valve body of the pressure regulating valve, so as to reduce and slow down the air sound generated by the rapid flow of air during negative pressure.

[0020] A further improvement of the pressure regulating valve for a cupping negative pressure instrument according to the present invention lies in that the quick plug rotary cover is provided with a plurality of suction and discharge communication holes for communicating with the valve body of the pressure regulating valve. When the user loosens the quick plug rotary cover, 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 rotary cover to perform negative pressure suction and discharge massage.

[0021] A further improvement of the pressure regulating valve for a cupping negative pressure instrument according to the present invention lies in that the quick plug rotary cover is internally provided with a quick plug stopper. When the quick plug rotary cover is rotated to the tightest position, the quick plug stopper will block the negative pressure communication hole to achieve a plugging effect.

[0022] A further improvement of the pressure regulating valve for a cupping negative pressure instrument according to the present invention lies in that there is a quick plug structure gasket groove between the quick plug rotary cover and the negative pressure communication hole, and a soft anti-pressure relief gasket is arranged in the quick plug structure gasket groove to prevent air leakage due to gaps when the quick plug stopper blocks the negative pressure communication hole and thus affect the negative pressure.

[0023] A further improvement of the pressure regulating valve for a cupping negative pressure instrument according to the present invention lies in that the filter cotton fixing cover is provided with a plurality of annular holes, such that air first passes through the filter cotton to adsorb essential oils and body oils, and the remaining air then flows out from the middle through the annular holes of the filter cotton fixing cover, achieving a filtering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a three-dimensional exploded view of the pressure regulating valve for a cupping negative pressure instrument according to the present invention.

[0025] Figure 2 is a three-dimensional assembled view of the pressure regulating valve for a cupping negative pressure instrument according to the present invention.

[0026] Figure 3 This is a sectional exploded view of the pressure regulating valve for the cupping negative pressure instrument of the present invention.

[0027] Figure 4 This is a sectional combined view of the pressure regulating valve for the cupping negative pressure instrument of the present invention.

[0028] Figure 5 This is a usage scenario diagram of the pressure regulating valve for the cupping negative pressure instrument of the present invention. Detailed implementation manners

[0029] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0030] The present invention adopts a pressure regulating valve for a cupping negative pressure instrument. By rotating the pressure regulating valve cap, the metal screw structure inside the pressure regulating valve cap can be driven to rotate and engage with the metal nut structure inside the pressure regulating valve body until it is tightened to the maximum. In the tightened state, the metal screw structure can block the small hole on the metal nut structure inside the pressure regulating valve body, preventing air from flowing into the pressure regulating valve body, so that the negative pressure channel is maintained at the strongest without being affected. When the metal screw structure and the metal nut structure are loosened, the metal screw structure will move upward to expose a gap in the small hole of the metal nut structure, allowing air to flow through the gap into the pressure regulating valve body, thereby reducing the negative pressure channel. Furthermore, by rotating the pressure regulating valve cap, the amount of air flowing into the pressure regulating valve body can be controlled, and the size of the negative pressure channel can be adjusted, solving the problem of not being able to meet the needs of different users, improving the massage effect, reducing machine failures, facilitating use, and enhancing user satisfaction. The pressure regulating valve for the cupping negative pressure instrument of the present invention will be described below in conjunction with the accompanying drawings.

[0031] Refer to Figure 1 , Figure 1 This is a three-dimensional exploded view of the pressure regulating valve for the cupping negative pressure instrument of the present invention. The following will describe the pressure regulating valve for the cupping negative pressure instrument of the present invention in conjunction with Figure 1 the accompanying drawings.

[0032] As Figures 1 to 4 shown, the pressure regulating valve 100 for the cupping negative pressure instrument of the present invention can be divided into four components, including a pressure regulating valve cap 1, a pressure regulating valve body 2, a metal nut structure 3, and a silencing cover 4.

[0033] As a preferred embodiment of the present invention, a pressure regulating valve filter groove 22 is provided inside the pressure regulating valve body 2. Above the pressure regulating valve filter groove 22, there is a metal nut structure assembly seat 21, so that the metal nut structure 3 is tightly installed in the metal nut structure placement hole 211 inside the metal nut structure assembly seat 21. After placement, it cannot be pulled out and is combined with the metal nut structure assembly seat 21 as a whole. The metal nut structure 3 is provided with a plurality of nut pressure relief holes 31 communicating with the placement hole flow through hole 212 of the metal nut structure placement hole 211.

[0034] Furthermore, the user inserts the metal screw structure 12 provided at the bottom of the pressure regulating valve cap 1 into the metal nut structure 3 installed in the metal nut structure assembly seat 21, and rotates the pressure regulating valve cap 1 to drive the metal screw structure 12 to be screwed and tightened into the metal nut structure 3, so that the inside of the pressure regulating valve body 2 is in an airtight state.

[0035] Furthermore, the user covers the silencer cover 4 and assembles it on the silencer cover assembly seat 215 provided on the metal nut structure assembly seat 21, so that the cover edge 11 of the pressure regulating valve cap 1 and the stop ring flow through hole 214 of the metal nut structure assembly seat 21 are in the space between the silencer cover 4 and the silencer cover assembly seat 215 to reduce the air sound generated when air flows into the inside of the pressure regulating valve body 2.

[0036] Combined Figure 5 As shown, the user connects the connecting pipe 5 in series to the negative pressure connecting hole 23 of the pressure regulating valve body 2 with the silencer cover 4 covered, and connects the other end of the lower connecting pipe 5 in series to a negative pressure instrument (not shown in the figure). And through a plurality of the negative pressure connecting holes 23 around the pressure regulating valve body 2, the same number of the connecting pipes 5 can be connected in series, and a plurality of negative pressure cups (not shown in the figure) can be connected in series, so that the pressure regulating valve 100 is connected between the negative pressure cup and the negative pressure instrument.

[0037] Furthermore, a quick plug cap 6 is covered outside the negative pressure connecting hole 23. The user can rotate the quick plug cap 6 to adjust the connection or blockage of the negative pressure connecting hole 23, so that the quick plug cap 6 can be operated without being removed, avoiding the problem that the soft plug body in the prior art is easy to lose.

[0038] Furthermore, a quick plug cap combination thread 231 is provided at each of the negative pressure connecting holes 23, and an internal thread 61 is provided inside the quick plug cap 6 to screw the quick plug cap 6 onto the quick plug cap combination thread 231 for assembly to block the unused negative pressure connecting hole 23 and prevent air from flowing into the pressure regulating valve body 2 through the unused negative pressure connecting hole 23, affecting the negative pressure massage.

[0039] Specifically, the quick plug screw cap 6 is provided with a plurality of air suction and discharge communication holes 62 for communicating with the pressure regulating valve body 2. When the user loosens the quick plug screw cap 6, the negative pressure communication hole 23 of the pressure regulating valve body 2 can communicate with the air suction and discharge communication holes 62 of the quick plug screw cap 6 to perform negative pressure suction and massage.

[0040] Specifically, a quick plug stopper 63 is provided inside the quick plug screw cap 6. When the quick plug screw cap 6 is rotated to the tightest position, the quick plug stopper 63 will block the negative pressure communication hole 23 to achieve the plugging effect.

[0041] Preferably, a quick plug structure gasket groove 64 is provided between the quick plug screw cap 6 and the negative pressure communication hole 23, and a soft anti-pressure relief gasket 65 is arranged in the quick plug structure gasket groove 64 to prevent the negative pressure from being affected by the gaps generated when the quick plug stopper 63 plugs the negative pressure communication hole 23.

[0042] Furthermore, a filter cotton 7 is arranged in the pressure regulating valve filter groove 22, and the filter cotton 7 is fixed in the pressure regulating valve body 2 by a filter cotton fixing cover 221, so that the air inhaled through the negative pressure communication hole 23 flows through the filter cotton 7, adsorbing essential oil and body oil on the filter cotton 7 and then discharging them, preventing the suction of the pressure regulating valve 100 from being damaged and reduced.

[0043] Specifically, the metal nut structure assembly seat 21 is detachably arranged above the pressure regulating valve filter groove 22 of the pressure regulating valve body 2. Therefore, the user can separate the metal nut structure assembly seat 21 from the pressure regulating valve filter groove 22 to wash the pressure regulating valve filter groove 22 with water or replace the filter cotton 7.

[0044] Preferably, a plurality of annular holes 222 are provided on the filter cotton fixing cover 221, so that the air first passes through the filter cotton 7 to adsorb essential oil and body oil, and the remaining air then passes through the annular holes 222 of the filter cotton fixing cover 221 and is then inhaled into the negative pressure instrument through the central circular hole 223 to achieve the filtering effect.

[0045] More preferably, a silicone gasket 24 is arranged around the metal nut structure assembly seat 21 to prevent gaps from being generated at the assembly joint after the metal nut structure assembly seat 21 is installed in the pressure regulating valve body 2.

[0046] The specific operation method provided by the present invention is actually implemented as follows:

[0047] The user starts the negative pressure instrument. The negative pressure instrument extracts the air inside the negative pressure cup body through the connecting pipe 5 and the pressure regulating valve 100, making the inside of the negative pressure cup body in a negative pressure state, and uses the negative pressure cup body to cover various parts of the body for negative pressure rhythm massage. During the use process, by rotating the pressure regulating valve cap 1, the metal screw structure 12 can be driven to rotate upward in the metal nut structure 3, and the nut pressure relief hole 31 originally blocked by the metal screw structure 12 is gradually exposed, so that air flows from the flow gap 41 between the silencing cover 4 and the pressure regulating valve cap 1 to the stop ring flow hole 214 provided by the stop ring 213 of the metal nut structure assembly seat 21, then flows to the placement hole flow hole 212, and finally slightly flows from the nut pressure relief hole 31 into the pressure regulating valve body 2, thereby affecting the negative pressure path from the negative pressure instrument through the pressure regulating valve 100 to the inside of the negative pressure cup body. The user can control the upward rotation height of the metal screw structure 12 by rotating the pressure regulating valve cap 1, affecting the degree of exposure of the nut pressure relief hole 31, and thus adjusting the size of the negative pressure path inside the negative pressure cup body;

[0048] After the user finishes using, the silencing cover 4 can be removed, and the pressure regulating valve cap 1 can be rotated and disassembled from the pressure regulating valve body 2, and the above three components can be cleaned to remove the dirt inside for convenient use next time.

[0049] The present invention has been described in detail with reference to the accompanying drawings and embodiments. Those of ordinary skill in the art can make various variations of the present invention according to the above description. Therefore, some details in the embodiments should not constitute a limitation to the present invention, and the protection scope of the present invention will be defined by the scope defined in the appended claims.

Claims

1. A pressure regulating valve for a cupping negative pressure instrument, characterized in that, Including: Pressure regulating valve screw cap, metal screw structure, silencer cap, silencer cap assembly seat, metal nut structure, pressure regulating valve body, quick plug screw cap, filter cotton and filter cotton fixing cap; There is a metal nut structure assembly seat in the pressure regulating valve body, and the metal nut structure assembly seat is assembled with the metal nut structure as a whole. The pressure regulating valve screw cap and the metal screw structure are combined as a whole. Through the metal nut structure and the metal screw structure, the pressure regulating valve screw cap and the pressure regulating valve body can be rotationally combined. Rotating the pressure regulating valve screw cap can adjust the air flow rate in the pressure regulating valve body to perform the action of adjusting the negative pressure channel. The silencer cap can be combined with the silencer cap assembly seat and cover the stop ring through hole on the metal nut structure assembly seat to reduce the air sound generated when air flows into the pressure regulating valve body. The quick plug screw cap covers the negative pressure communication hole provided on the pressure regulating valve body for the air suction and discharge channel. By rotating the quick plug screw cap, the negative pressure communication hole can be adjusted to be connected or blocked, so that the quick plug screw cap does not need to be removed to avoid loss. The filter cotton is in the pressure regulating filter slot of the pressure regulating valve body and is fixed in the pressure regulating valve body with a filter cotton fixing cap. The air inhaled through the negative pressure communication hole passes through the filter cotton, adsorbing essential oil and body oil on the filter cotton and then discharging it to prevent the suction force from being damaged; The pressure regulating valve body is provided with a plurality of the negative pressure communication holes, and a quick plug screw cap combination thread is provided outside each of the negative pressure communication holes, so that the quick plug screw cap is screwed in with internal threads and assembled on the quick plug screw cap combination thread to block the unused negative pressure communication hole and prevent air from flowing into the pressure regulating valve body through the unused negative pressure communication hole, affecting negative pressure massage; The metal nut structure assembly seat is detachably arranged above the pressure regulating filter slot of the pressure regulating valve body, and the metal nut structure assembly seat can be separated from the pressure regulating filter slot to wash the pressure regulating filter slot with water or replace the filter cotton; A silicone gasket is arranged around the metal nut structure assembly seat to prevent gaps from occurring at the assembly joint after the metal nut structure assembly seat is installed in the pressure regulating valve body.

2. The pressure regulating valve for a cupping negative pressure instrument according to claim 1, wherein, When in use, the pressure regulating valve is connected in series between the cupping negative pressure instrument and the negative pressure cup body, so that the cupping negative pressure instrument first passes through the pressure regulating valve and then to the negative pressure cup body to extract air to generate negative pressure, and the strength of the negative pressure channel inside the negative pressure cup body can be controlled by rotating the pressure regulating valve screw cap.

3. The pressure regulating valve for a cupping negative pressure instrument according to claim 2, wherein, A plurality of nut pressure relief holes are provided around the metal nut structure inside the metal nut structure assembly seat. When the pressure regulating valve cap and the pressure regulating valve body are rotated and combined to the tightest state, the metal screw structure can block the nut pressure relief holes of the metal nut structure, preventing air from flowing into the pressure regulating valve body, making the inside of the pressure regulating valve body airtight, maximizing the negative pressure channel. When the pressure regulating valve cap is loosened, the metal screw structure slowly rotates upward, and the nut pressure relief holes of the metal nut structure are exposed, allowing a small amount of air to flow through the nut pressure relief holes into the pressure regulating valve body, thereby affecting the negative pressure channel for the cupping negative pressure device to extract the negative pressure cup body. By rotating the pressure regulating valve cap, the size of the exposed nut pressure relief holes is changed, thereby affecting the amount of air flowing into the pressure regulating valve body, and further adjusting the negative pressure channel.

4. The pressure regulating valve for a cupping negative pressure device according to claim 3, wherein, A metal nut structure placement hole is provided inside the metal nut structure assembly seat for assembling and inserting the metal nut structure, and the metal nut structure placement hole is provided with a placement hole flow-through hole communicating with the nut pressure relief hole of the metal nut structure, enabling air to flow smoothly into the pressure regulating valve body.

5. The pressure regulating valve for a cupping negative pressure instrument according to claim 4, wherein, The metal nut structure assembly seat is provided with a cap stop ring. When the pressure regulating valve cap is rotated downward until it abuts against the cap stop ring, it cannot be further screwed downward. The pressure regulating valve cap can be rotated within a limited range to adjust the negative pressure channel. The cap stop ring is provided with a stop ring flow-through hole communicating with the nut pressure relief hole of the metal nut structure inside the pressure regulating valve body, for allowing air to flow smoothly into the pressure regulating valve body.

6. The pressure regulating valve for a cupping negative pressure instrument according to claim 5, characterized in that, The metal nut structure assembly seat is provided with a silencer cap assembly seat for assembling the silencer cap, such that the stop ring flow-through hole of the cap stop ring is within the space between the silencer cap and the silencer cap assembly seat, enabling air to flow through the gap between the silencer cap and the pressure regulating valve cap into the space between the silencer cap and the silencer cap assembly seat for buffering, and then flowing to the nut pressure relief hole of the metal nut structure at the innermost layer of the pressure regulating valve body to reduce and slow down the air sound generated by the rapid air flow during negative pressure.

7. The pressure regulating valve for a cupping negative pressure instrument according to claim 1, characterized in that, The quick plug cap is provided with a plurality of suction and discharge communication holes for communicating with the pressure regulating valve body. When the user loosens the quick plug cap, the negative pressure communication hole of the pressure regulating valve body can communicate with the suction and discharge communication holes of the quick plug cap to perform negative pressure suction and discharge massage.

8. The pressure regulating valve for a cupping negative pressure instrument according to claim 1, characterized in that, A quick plug stopper is provided inside the quick plug cap. When the quick plug cap is rotated to the tightest state, the quick plug stopper will block the negative pressure communication hole to achieve a plugging effect.

9. The pressure regulating valve for a cupping negative pressure instrument according to claim 8, characterized in that, There is a quick plug structure gasket groove between the quick plug cap and the negative pressure communication hole, and a soft anti-pressure relief gasket is provided in the quick plug structure gasket groove to prevent air leakage due to gaps when the quick plug stopper blocks the negative pressure communication hole and affect the negative pressure.

10. The pressure regulating valve for the cupping negative pressure device according to claim 1, characterized in that, A plurality of annular holes are provided on the filter cotton fixing cover, enabling air to first pass through the filter cotton to adsorb essential oils and body oils, and the remaining air then flows out through the annular holes of the filter cotton fixing cover from the middle to achieve a filtering effect.

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