CN216813749U - Variable-flow quick connector based on low-temperature impact analgesia instrument - Google Patents

Abstract

The utility model discloses a variable flow quick connector based on a low-temperature impact analgesic apparatus, which comprises: the left end of the push rod piston is circumferentially attached to the second cavity, a compression spring is arranged between the left end of the push rod piston and the left end of the second cavity, and the push rod piston is provided with an air vent along the axial direction; the male connector and the female connector are circumferentially attached and fixed with the third cavity in a connected state, the left end of the male connector can penetrate through the third cavity to be abutted to the push rod piston, the male connector is provided with a fourth cavity in the axial direction and a fifth cavity communicated with the fourth cavity in the radial direction, and a liftable control valve is arranged in the fifth cavity. This device can improve the gas cylinder joint dismouting effect of low temperature impact analgesia appearance.

Description

Variable-flow quick connector based on low-temperature impact analgesia instrument

Technical Field

The utility model relates to the technical field of low-temperature impact analgesia instruments, in particular to a variable-flow quick connector based on a low-temperature impact analgesia instrument.

Background

The low-temperature impact analgesic apparatus is a gasification equipment using liquid carbon dioxide, and the equipment adopts a nervous low-temperature stimulation technology. Liquid carbon dioxide is sprayed out from the gas cylinder through a pipeline connected with the gas cylinder joint 07 by the treatment handle to be used for treating the affected part, wherein the carbon dioxide is high pressure (50bar) and ultralow temperature (-78 ℃).

At present, a connector connected with a valve 06 of a carbon dioxide gas cylinder of a low-temperature impact analgesic apparatus has a single function and only has a connecting function. A common gas cylinder connector 07 is composed of a connector nut 01, an inner connector 02, a sliding sleeve 03, a sealing ring 04 and a clamp spring 05, as shown in fig. 1. The sliding sleeve 03 can be rotated to drive the joint nut 01 to rotate, so that the joint nut 01 is in threaded connection with the 06 interface of the gas cylinder valve, the sealing ring 04 at the 02 part of the inner joint is in close contact with the gas cylinder valve 06 under the compression effect of the joint nut 01 to achieve the effects of connection and sealing, the clamp spring 05 is used for limiting the movement of the sliding sleeve 03, the sliding sleeve 03 is prevented from being separated from the nut after the joint is installed, and the connection state is as shown in fig. 2.

The gas cylinder joint 07 is connected and then located in a gas cylinder handle 08, and due to the existence of the gas cylinder handle 08, the distance between the sliding sleeve 03 and the gas cylinder body is short, so that the operation of disassembling and assembling the joint is difficult. When the gas cylinder is replaced, the gas cylinder valve 06 is difficult to close, and the situation that the gas cylinder valve 06 is not closed tightly is easy to occur, so that liquid carbon dioxide is sprayed out to cause frostbite of a human body; in the treatment process, the flow of the liquid carbon dioxide cannot be accurately controlled, and corresponding treatment operations cannot be accurately performed on patients with different injury degrees.

In summary, how to improve the gas cylinder connector dismounting effect of the low-temperature impact analgesic apparatus and realize accurate treatment is a problem to be solved urgently by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims to provide a variable flow rate quick connector based on a low-temperature impact analgesia instrument, which adopts a quick connector structure, solves the problem of inconvenient connector assembly and disassembly in the past, and improves the gas cylinder connector assembly and disassembly effect of the low-temperature impact analgesia instrument. In addition, the device can accurately control and adjust the output flow of the carbon dioxide.

In order to achieve the above purpose, the utility model provides the following technical scheme:

a variable flow quick connector based on a low-temperature impact analgesia instrument comprises: the gas cylinder connector comprises a female connector and a male connector, wherein the female connector is used for being connected with a gas cylinder and comprises an outer connector, a push rod piston and a connecting sleeve, a first cavity is arranged at the left end of the outer connector, a second cavity axially communicated with the first cavity is arranged at the right end of the outer connector, the first cavity is used for installing a valve of the gas cylinder, the push rod piston can move in the second cavity, the connecting sleeve is arranged at the right end of the outer connector and provided with a third cavity for accommodating the male connector, the left end of the push rod piston is circumferentially attached to the second cavity, a compression spring is arranged between the left end of the push rod piston and the left end of the second cavity, and the push rod piston is axially provided with an air vent;

the male connector and the female connector can be attached and fixed with the third cavity in the circumferential direction in a connection state, the left end of the male connector can penetrate through the third cavity and abut against the right end of the push rod piston, the male connector is axially provided with a fourth cavity and a fifth cavity communicated with the fourth cavity in the radial direction, a liftable control valve is arranged in the fifth cavity, and the end of the control valve can be plugged in the fourth cavity in an initial state.

Preferably, the first cavity is in threaded connection with the valve, a sealing ring is arranged at the threaded connection position of the first cavity, the connecting sleeve is in threaded connection with the outer joint, and the sealing ring is arranged at the threaded connection position of the connecting sleeve.

Preferably, a first spring seat is arranged at the left end of the second cavity, a first flow through hole is formed in the first spring seat, a second spring seat is arranged at the left end of the push rod piston, a second flow through hole is formed in the second spring seat, and the first spring seat and the second spring seat are matched and fixed with the compression spring.

Preferably, be equipped with in the adapter sleeve be used for with the right-hand member sealing contact's of push rod piston left side conical surface, be used for with the left end sealing contact's of male joint right side conical surface, spacing draw-in groove and spacing hole, the male joint runs through along vertical direction and is equipped with spacing post, under spacing post and the alignment state of spacing draw-in groove, can insert spacing downthehole.

Preferably, the right end of the push rod piston is provided with a first conical surface attached to the left conical surface, the first conical surface is provided with a sealing ring, the male joint is provided with a second conical surface attached to the right conical surface, and the second conical surface is provided with a sealing ring.

Preferably, the left end of the male connector is provided with a top round table used for pushing the push rod piston to move, and the top round table is circumferentially provided with at least one communicating hole communicated with the fourth cavity.

Preferably, at least one sealing ring attached to the third cavity is arranged on the outer periphery of the male connector.

Preferably, the right end of the male connector is provided with a filter plug for filtering impurities.

Preferably, the control valve is a solenoid valve.

Preferably, the solenoid valve includes a ball valve for plugging the fourth cavity, a coil, a fixed core, a fixed spring seat disposed at the fixed core, a movable spring seat disposed at the movable core, and a spring disposed between the fixed spring seat and the movable spring seat, the ball valve is disposed at the bottom of the movable core, and a sealing ring is disposed at the joint of the ball valve and the movable spring seat.

When the variable flow quick connector based on the low-temperature impact analgesic apparatus provided by the utility model is used, the compression spring and the push rod piston can be placed into the second cavity from the right side of the external connector, the connecting sleeve is installed at the right end of the external connector to form a female connector part, and then the first cavity is connected with the valve of the gas cylinder. And finally, the control valve is installed in a fifth cavity, the end part of the right end of the male joint is connected with a next-stage high-pressure hose, and the end part of the control valve in the initial state can plug the fourth cavity of the male joint.

After the device is connected, liquid carbon dioxide can flow out of a valve of the gas cylinder, pass through the first cavity, the second cavity and the vent hole of the female connector and then enter the fourth cavity of the male connector, and the end part of the control valve in the initial state can block the fourth cavity, so that the liquid carbon dioxide cannot pass through the fourth cavity temporarily. When the low-temperature impact analgesia instrument equipment starts to operate, the control valve can be controlled to move upwards so that the end part of the control valve is not completely attached to block the fourth cavity any more, the fourth cavity is conducted, and carbon dioxide can flow into the next-stage high-pressure hose from the fourth cavity to perform related treatment operation on a patient. The conveying process of the carbon dioxide can be controlled by controlling the lifting displacement of the control valve. For example, when the temperature of the body surface of the patient is lower than the set temperature range, the control valve can be controlled to move downwards to reduce the flow of the carbon dioxide, and conversely, the flow of the carbon dioxide can be increased.

In conclusion, the variable flow quick connector based on the low-temperature impact analgesic apparatus provided by the utility model adopts a quick connector structure, so that the problem that the connector is inconvenient to disassemble and assemble in the past is solved, and the disassembling and assembling effects of the gas cylinder connector of the low-temperature impact analgesic apparatus are improved. In addition, the device can accurately control and adjust the output flow of the carbon dioxide.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic diagram of a prior art gas cylinder connector;

FIG. 2 is a schematic view of a prior art connection of a cylinder connector and a cylinder valve;

in fig. 1 and 2:

01 is a joint nut, 02 is an inner joint, 03 is a sliding sleeve, 04 is a sealing ring, 05 is a snap spring, 06 is a valve, 07 is a gas cylinder joint, 08 is a gas cylinder handle;

FIG. 3 is a schematic structural diagram of a variable flow rate quick connector based on a low temperature impact analgesic apparatus provided by the present invention;

FIG. 4 is a schematic structural diagram of the external joint;

FIG. 5 is a schematic view of the outer joint and the push rod piston;

FIG. 6 is a schematic structural view of the plunger piston;

FIG. 7 is a front view of FIG. 6;

fig. 8 is a schematic structural view of the connecting sleeve;

FIG. 9 is a front sectional view of FIG. 8;

FIG. 10 is a schematic structural view of a male connector;

FIG. 11 is a front sectional view of FIG. 10;

FIG. 12 is a schematic view of the female connector;

FIG. 13 is a schematic view of the male and female connector as they are initially assembled;

FIG. 14 is a schematic view of the male and female connectors in place;

fig. 15 is a schematic diagram of the structure of the control valve at the start of operation.

In fig. 3-15:

the structure comprises a female joint 1, a male joint 2, an outer joint 3, a push rod piston 4, a connecting sleeve 5, a first cavity 6, a second cavity 7, a third cavity 8, a compression spring 9, a vent hole 10, a fourth cavity 11, a fifth cavity 12, a control valve 13, a sealing ring 14, a first spring seat 15, a second spring seat 16, a left conical surface 17, a right conical surface 18, a limiting clamping groove 19, a limiting hole 20, a first conical surface 21, a second conical surface 22, a top round table 23, a communicating hole 24, a filter plug 25, a limiting column 26, a ball valve 27, a coil 28, a fixed core 29, a fixed spring seat 30, a movable core 31 and a movable spring seat 32.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The core of the utility model is to provide a variable flow quick connector based on a low-temperature impact analgesic apparatus, which adopts a quick connector structure, solves the problem of inconvenient disassembly and assembly of the conventional connector, and improves the disassembly and assembly effect of a gas cylinder connector of the low-temperature impact analgesic apparatus. In addition, the device can accurately control and adjust the output flow of the carbon dioxide.

Please refer to fig. 3 to fig. 15.

This embodiment provides a variable flow quick connector based on low temperature strikes analgesia appearance, includes: the gas cylinder connector comprises a female connector 1 and a male connector 2, the female connector 1 comprises an outer connector 3, a push rod piston 4 and a connecting sleeve 5, a first cavity 6 is arranged at the left end of the outer connector 3, a second cavity 7 axially communicated with the first cavity 6 is arranged at the right end of the outer connector 3, the first cavity 6 is used for installing a valve of the gas cylinder, the push rod piston 4 can move in the second cavity 7, the connecting sleeve 5 is arranged at the right end of the outer connector 3, the connecting sleeve 5 is provided with a third cavity 8 used for containing the male connector 2, the left end of the push rod piston 4 is circumferentially attached to the second cavity 7, a compression spring 9 is arranged between the left end of the second cavity 7 and the left end of the push rod piston 4, and the push rod piston 4 is axially provided with an air vent 10; can be fixed with 8 circumference laminating of third cavity under male joint 2 and the connected state of female joint 1, the left end of male joint 2 can pass the right-hand member butt of third cavity 8 with push rod piston 4, male joint 2 is equipped with fourth cavity 11 along the axial, radially is equipped with the fifth cavity 12 with fourth cavity 11 intercommunication, is equipped with the control valve 13 of liftable in the fifth cavity 12, and the fourth cavity 11 can be blocked up to the tip of control valve 13 under the initial condition.

In the actual application process, the shapes, structures, sizes, positions and the like of the outer joint 3, the push rod piston 4, the connecting sleeve 5 and the male joint 2 can be determined according to actual conditions and actual requirements.

When the variable flow quick connector based on the low-temperature impact analgesic apparatus provided by the utility model is used, the compression spring 9 and the push rod piston 4 can be placed into the second cavity 7 from the right side of the outer connector 3, the connecting sleeve 5 is installed at the right end of the outer connector 3 to form the female connector 1 part, and the first cavity 6 is connected with the valve of the gas cylinder. Afterwards, the male connector 2 can be inserted into the third cavity 8 of the connecting sleeve 5, so that the left end of the male connector 2 penetrates through the third cavity 8, abuts against the right end of the push rod piston 4 to enter the second cavity 7, the male connector 2 and the female connector 1 are connected and then are circumferentially attached and fixed to the third cavity 8, finally, the control valve 13 is installed in the fifth cavity 12, the right end of the male connector 2 is connected with the next-stage high-pressure hose, and the end of the control valve 13 in the initial state can block the fourth cavity 11 of the male connector 2.

After the device is connected, liquid carbon dioxide can flow out of a valve of the gas cylinder, pass through the first cavity 6, the second cavity 7 and the vent hole 10 of the female connector 1 and then enter the fourth cavity 11 of the male connector 2, and the end of the control valve 13 in an initial state can block the fourth cavity 11, so that the liquid carbon dioxide cannot pass through the fourth cavity 11 temporarily. When the low-temperature impact analgesic apparatus starts to operate, the control valve 13 can be controlled to move upwards, so that the end part of the control valve 13 is not completely attached to and blocked with the fourth cavity 11 any more, the fourth cavity 11 is conducted, and carbon dioxide can flow into the next-stage high-pressure hose from the fourth cavity 11 to perform relevant treatment operation on a patient. The carbon dioxide delivery process can be controlled by controlling the lifting displacement of the control valve 13. For example, when the temperature of the body surface of the patient is lower than the set temperature range, the control valve 13 may be controlled to move downward to decrease the flow rate of carbon dioxide, and vice versa to increase the flow rate of carbon dioxide.

In conclusion, the variable flow quick connector based on the low-temperature impact analgesic apparatus provided by the utility model adopts a quick connector structure, so that the problem that the connector is inconvenient to disassemble and assemble in the past is solved, and the disassembling and assembling effects of the gas cylinder connector of the low-temperature impact analgesic apparatus are improved. In addition, the device can accurately control and adjust the output flow of the carbon dioxide.

On the basis of the above embodiment, preferably, the first cavity 6 is in threaded connection with the valve, and the threaded connection of the first cavity 6 is provided with the sealing ring 14, so as to ensure the connection sealing effect between the outer joint 3 and the valve. The connecting sleeve 5 is in threaded connection with the outer joint 3, and a sealing ring 14 is arranged at the threaded connection position of the connecting sleeve 5 so as to ensure the connection sealing effect of the connecting sleeve 5 and the outer joint 3.

Preferably, a first spring seat 15 is arranged at the left end of the second cavity 7, a first flow through hole is formed in the first spring seat 15, a second spring seat 16 is arranged at the left end of the push rod piston 4, a second flow through hole is formed in the second spring seat 16, and the first spring seat 15 and the second spring seat 16 are matched and fixed with the compression spring 9. The first and second flow holes can ensure the communication effect of the first and second cavities 6 and 7 and the vent hole 10. The compression spring 9 is arranged, so that the male connector 2 can push the right end of the push rod piston 4 to move towards the left side, and the push rod piston 4 can be reset after the male connector 2 is taken out.

Preferably, the connecting sleeve 5 is internally provided with a left conical surface 17 for being in sealing contact with the right end of the push rod piston 4, a right conical surface 18 for being in sealing contact with the left end of the male connector 2, a limiting clamping groove 19 and a limiting hole 20, the male connector 2 is provided with a limiting column 26 in a penetrating manner along the vertical direction, and the limiting column 26 can be inserted into the limiting hole 20 in an aligned state with the limiting clamping groove 19.

Preferably, the right end of the push rod piston 4 is provided with a first conical surface 21 attached to the left conical surface 17, the first conical surface 21 is provided with a sealing ring 14, the male connector 2 is provided with a second conical surface 22 attached to the right conical surface 18, and the second conical surface 22 is provided with the sealing ring 14.

It should be noted that when the assembly operation of the female joint 1 is performed, the push rod piston 4 will abut against the connecting sleeve 5 under the action of the compression spring 9, that is, the first conical surface 21 will be in sealing contact with the left conical surface 17. When the female connector 1 and the male connector 2 are connected, the male connector 2 can push the push rod piston 4 to move, so that the first conical surface 21 can be separated from the left-side conical surface 17 until the second conical surface 22 is in sealing fit with the right-side conical surface 18, which means that the female connector 1 and the male connector 2 are assembled in place, the limiting clamping groove 19 and the limiting column 26 at the moment can be aligned with each other, and then the male connector 2 can be rotated to insert the limiting column 26 into the limiting hole 20, so that the connection and fixing operation of the female connector 1 and the male connector 2 is realized.

On the basis of the above embodiment, preferably, the left end of the male connector 2 is provided with a top circular truncated cone 23 for pushing the push rod piston 4 to move, and the top circular truncated cone 23 is circumferentially provided with at least one communication hole 24 communicated with the fourth cavity 11. The top round platform 23 is mainly used for pushing the right end of the push rod piston 4 to move, so that the push rod piston 4 is separated from the left side conical surface 17 of the connecting sleeve 5. The communication hole 24 is mainly used for communicating with the fourth chamber 11 so as to circulate and convey liquid carbon dioxide.

Preferably, at least one sealing ring 14 attached to the third cavity 8 is disposed on the outer periphery of the male connector 2 to effectively prevent the carbon dioxide leakage.

Preferably, the right end of the male connector 2 is provided with a filter plug 25 for filtering foreign substances. The filter plug 25 not only can effectively filter impurities in the carbon dioxide, but also can stabilize the pressure of the carbon dioxide liquid in the pipeline. That is, during the use process, the carbon dioxide can flow into the next stage high pressure hose after passing through the filter plug 25 from the fourth cavity 11, so as to ensure the purity of the carbon dioxide.

Preferably, the control valve 13 is a solenoid valve. The solenoid valve can control the cross section size of the fourth cavity 11, thereby achieving the purpose of controlling the flow of carbon dioxide.

Preferably, the electromagnetic valve includes a ball valve 27 for sealing the fourth cavity 11, a coil 28, a fixed core 29, a fixed spring seat 30 disposed at the fixed core 29, a movable core 31, a movable spring seat 32 disposed at the movable core 31, and a spring disposed between the fixed spring seat 30 and the movable spring seat 32, the ball valve 27 is disposed at the bottom of the movable core 31, and a sealing ring 14 is disposed at the junction of the ball valve 27 and the movable spring seat 32.

It should be noted that when the device is in operation, current flows through the coil 28 of the solenoid valve to make the solenoid valve generate magnetism, and after overcoming the gravity of the ball valve 27, the ball valve 27 can be moved upwards to conduct the fourth cavity 11, so as to realize the carbon dioxide delivery operation. The output flow of carbon dioxide can be controlled by controlling the amount of current flowing through solenoid coil 28.

In order to further explain the usage of the variable flow quick connector based on the low temperature impact analgesic apparatus provided by the present invention, the following description is made.

Firstly, the assembly operation of the female joint 1 can be carried out, namely the sealing ring 14 can be installed at the threaded connection position of the first cavity 6, then the compression spring 9 and the push rod piston 4 provided with the sealing ring 14 are placed into the second cavity 7 from the right side of the outer joint 3, then the connecting sleeve 5 is in threaded connection with the right end of the outer joint 3 to form the female joint 1 part of the quick-connection joint, and at the moment, the sealing ring 14 of the push rod piston 4 can be pressed and sealed with the left conical surface 17 of the connecting sleeve 5. And, the valve of gas cylinder can carry out threaded connection with first cavity 6, and the valve can extrude with the sealing washer 14 of first cavity 6 and form sealed effect.

Thereafter, the connecting operation of the female connector 1 and the male connector 2 may be performed. The top round platform 23 of the male joint 2 can enter the third cavity 8 of the connecting sleeve 5, and after the top round platform 23 contacts the push rod piston 4, the three sealing rings 14 of the male joint 2 can contact the third cavity 8 of the connecting sleeve 5 to form a closed space. With the continuous pushing of the top round platform 23, the right end of the push rod piston 4 can be separated from the left conical surface 17 of the connecting sleeve 5, and the sealing ring 14 is arranged on the outer periphery of the male connector 2, so that liquid carbon dioxide can be prevented from leaking to the outside through the inner cavity of the connecting sleeve 5. When the sealing ring 14 of the second conical surface 22 contacts with the right conical surface 18 of the connecting sleeve 5, it indicates that the male joint 2 and the female joint 1 are assembled in place, and the limiting clamping groove 19 and the limiting column 26 are aligned with each other, so that the limiting column 26 and the limiting clamping groove 19 can be inserted into the limiting hole 20 after being aligned with each other, so as to complete the joint connection operation.

After the male connector 2 and the female connector 1 are connected, liquid carbon dioxide can flow out of the valve of the gas cylinder, pass through the first cavity 6, the second cavity 7 and the vent hole 10, and then enter the fourth cavity 11 of the male connector 2. The ball valve 27 of the solenoid valve is naturally attached to the fourth chamber 11 so that the carbon dioxide cannot flow out temporarily.

When the device is in operation, current flows through the solenoid 28, which causes the solenoid to become magnetic, and the ball 27 moves upward after overcoming the weight of the ball 27, thereby allowing carbon dioxide to be conducted. The output flow of carbon dioxide can be effectively controlled by controlling the current flowing through the solenoid valve coil 28.

If the output flow of the carbon dioxide needs to be changed in real time, an infrared thermometer for measuring the body surface temperature of the patient can be installed, when the temperature of the patient is lower than the set temperature range, the current flowing through the solenoid valve coil 28 can be reduced, the ball valve 27 is moved downwards, and therefore the flow of the carbon dioxide is reduced, and otherwise, the flow of the carbon dioxide can be increased. Therefore, the device can control the output flow of the carbon dioxide according to the actual use condition, and the flow control comprises fixed flow setting and instantaneous flow regulation, so that the application range of the device is effectively enlarged.

The device adopts a quick-insertion structure, and solves the problem that the conventional connector is inconvenient to disassemble and assemble. Moreover, the device adopts multi-stage sealing arrangement, the convenience of assembly and disassembly of the device can be improved, the sealing performance of the device can be ensured, and the phenomenon that the operating personnel are frostbitten due to carbon dioxide leakage caused by inconvenient disassembly is avoided.

It should be noted that, in the present document, the first cavity 6, the second cavity 7, the third cavity 8, the fourth cavity 11, the fifth cavity 12, the first spring seat 15, the second spring seat 16, the first tapered surface 21, the second tapered surface 22, and the first flow through hole and the second flow through hole are mentioned, wherein the first, the second, the third, the fourth, and the fifth are only used for distinguishing the position differences and are not sequentially distinguished.

It should be noted that the directions and positional relationships indicated by "left and right", "top and bottom" and the like in the present application are based on the directions and positional relationships shown in the drawings, and are only for the convenience of simplifying the description and facilitating the understanding, but do not indicate or imply that the device or element referred to must have a specific direction, be configured and operated in a specific direction, and thus, should not be construed as limiting the present invention.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. Any combination of all the embodiments provided by the present invention is within the scope of the present invention, and will not be described herein.

The variable flow quick connector based on the low-temperature impact analgesic apparatus provided by the utility model is described in detail above. The principles and embodiments of the present invention have been described herein using specific examples, which are presented only to assist in understanding the method and its core concepts of the present invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims (10)

1. The utility model provides a fast bayonet joint of variable flow based on low temperature strikes analgesia appearance which characterized in that includes: a female joint (1) and a male joint (2) which are used for being connected with a gas cylinder, wherein the female joint (1) comprises an outer joint (3), a push rod piston (4) and a connecting sleeve (5), the left end of the outer joint (3) is provided with a first cavity (6), the right end is provided with a second cavity (7) which is axially communicated with the first cavity (6), the first cavity (6) is used for installing a valve of the gas cylinder, the push rod piston (4) can move in the second cavity (7), the connecting sleeve (5) is arranged at the right end of the outer joint (3), the connecting sleeve (5) is provided with a third cavity (8) for accommodating the male joint (2), the left end of the push rod piston (4) is attached to the second cavity (7) in the circumferential direction, a compression spring (9) is arranged between the left end of the push rod piston and the left end of the second cavity (7), and a vent hole (10) is formed in the push rod piston (4) in the axial direction;

male joint (2) with female joint (1) connected state down can with the laminating of third cavity (8) circumference is fixed, the left end of male joint (2) can pass third cavity (8) with the right-hand member butt of push rod piston (4), male joint (2) along the axial be equipped with fourth cavity (11), along radially be equipped with fifth cavity (12) of fourth cavity (11) intercommunication, be equipped with liftable control valve (13) in fifth cavity (12), under the initial condition the tip of control valve (13) can be shutoff fourth cavity (11).

2. The low-temperature impact analgesia instrument-based variable flow quick connector according to claim 1, wherein the first cavity (6) is in threaded connection with the valve, a sealing ring (14) is arranged at the threaded connection position of the first cavity (6), the connecting sleeve (5) is in threaded connection with the outer connector (3), and a sealing ring (14) is arranged at the threaded connection position of the connecting sleeve (5).

3. The low-temperature impact analgesia instrument-based variable flow quick connector is characterized in that a first spring seat (15) is arranged at the left end of the second cavity (7), a first flow through hole is formed in the first spring seat (15), a second spring seat (16) is arranged at the left end of the push rod piston (4), a second flow through hole is formed in the second spring seat (16), and the first spring seat (15) and the second spring seat (16) are matched and used for fixing the compression spring (9).

4. The low-temperature impact analgesia instrument-based variable flow quick connector according to claim 1, wherein a left conical surface (17) for being in sealing contact with the right end of the push rod piston (4), a right conical surface (18) for being in sealing contact with the left end of the male connector (2), a limiting clamping groove (19) and a limiting hole (20) are arranged in the connecting sleeve (5), a limiting column (26) is arranged in the male connector (2) along the vertical direction, and the limiting column (26) can be inserted into the limiting hole (20) in the state of being aligned with the limiting clamping groove (19).

5. The low-temperature impact analgesia instrument-based variable flow quick connector as claimed in claim 4, wherein the right end of the push rod piston (4) is provided with a first conical surface (21) attached to the left conical surface (17), the first conical surface (21) is provided with a sealing ring (14), the male connector (2) is provided with a second conical surface (22) attached to the right conical surface (18), and the second conical surface (22) is provided with the sealing ring (14).

6. The variable flow quick connector based on the low-temperature impact analgesic apparatus as claimed in any one of claims 1 to 5, wherein the left end of the male connector (2) is provided with a top circular truncated cone (23) for pushing the push rod piston (4) to move, and the top circular truncated cone (23) is circumferentially provided with at least one communication hole (24) which is communicated with the fourth cavity (11).

7. The variable flow rate quick connector based on the low temperature impact analgesic apparatus of any one of claims 1 to 5, characterized in that at least one sealing ring (14) attached to the third cavity (8) is provided on the outer circumference of the male connector (2).

8. The variable flow rate quick connector based on the low temperature impact analgesic apparatus in accordance with any one of claims 1 to 5, wherein the right end of the male connector (2) is provided with a filter plug (25) for filtering impurities.

9. The variable flow quick connector based on the low temperature impact analgesic apparatus in accordance with any one of claims 1 to 5, characterized in that the control valve (13) is a solenoid valve.

10. The variable flow quick connector based on the low-temperature impact analgesic apparatus as claimed in claim 9, wherein the electromagnetic valve includes a ball valve (27) for sealing the fourth cavity (11), a coil (28), a fixed core (29), a fixed spring seat (30) disposed at the fixed core (29), a movable core (31), a movable spring seat (32) disposed at the movable core (31), and a spring disposed between the fixed spring seat (30) and the movable spring seat (32), the ball valve (27) is disposed at the bottom of the movable core (31), and a sealing ring (14) is disposed at the connection between the ball valve and the movable spring seat.

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