Self-adapting flow regulating device for refrigerant filling

Abstract

The application discloses a kind of self-adapting flow regulating devices for refrigerant filling, belong to refrigerant filling technical field, including cylinder, cavity is equipped in cylinder and two ends are respectively pipeline connection with inlet pipeline and outlet pipeline, and one end of cylinder near outlet pipeline is equipped with hydraulic cylinder.The self-adapting flow regulating device for refrigerant filling of the application, by the driving of hydraulic cylinder and hydraulic push rod to piston column, make piston column carry out piston movement in the cavity of cylinder, cooperate with the plugging and adjusting of liquid outlet plugging ball, liquid inlet plugging ball to transmission pipeline, inlet pipeline, can control refrigerant fluid to adapt according to the filling demand of refrigeration equipment, to carry out quantitative filling, accurately control the flow of refrigerant, improve filling efficiency, ensure the flow stability of refrigerant, avoid excess or deficiency, reduce the waste of refrigerant fluid, guarantee filling quality, optimize flow control, ensure the accuracy and efficiency of filling process, improve filling quality and efficiency, finally reach the best filling effect.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of refrigerant filling, and particularly relates to a self-adaptive flow regulating device for refrigerant filling. BACKGROUND

[0002] The refrigerant filling machine is a special equipment for filling refrigerant into refrigeration equipment, and is mainly used in the production process of refrigeration equipment such as household air conditioner, refrigerator, freezer, water dispenser, ice cream machine, central air conditioner, automobile air conditioner, train air conditioner, heat pump water heater and heat pipe heat exchanger, to fill refrigerant, and is an important equipment in the production process of refrigeration equipment.

[0003] In the process of filling refrigerant into refrigeration equipment by the refrigerant filling machine, a booster pump is usually used to suck low-pressure refrigerant and output it into the refrigeration equipment after pressure boosting. This way enables the refrigerant to flow and transport over a long distance through pressure. However, there is no structure to control the flow of the filled refrigerant, and the flow of the refrigerant cannot be accurately controlled. The refrigeration equipment requires accurate and stable refrigerant flow, and the flow of the refrigerant driven by the booster pump often cannot correspond to the filling demand of the refrigeration equipment, thereby causing the flow of the filled refrigerant to be too large or too small, and resulting in the risk of insufficient or excessive refrigerant, and reducing the accuracy and efficiency in the refrigerant filling process. SUMMARY

[0004] The purpose of the present application is to provide a self-adaptive flow regulating device for refrigerant filling, which aims to solve the above-mentioned problems existing in the prior art.

[0005] In order to achieve the above-mentioned purpose, the following technical solutions are adopted in the present application:

[0006] A self-adaptive flow regulating device for refrigerant filling, comprising a cylinder, the cylinder has a cavity inside and is connected with an inlet pipeline and an outlet pipeline at both ends through pipelines, a hydraulic cylinder is assembled at one end of the cylinder close to the outlet pipeline, the hydraulic cylinder has a hydraulic push rod and the hydraulic push rod penetrates and inserts into the cavity of the cylinder, a sleeve is integrally arranged at the end of the hydraulic push rod, an outlet spring is assembled in the sleeve, and an outlet blocking ball is fixedly installed at the end of the outlet spring;

[0007] An outlet groove is provided on the outer circumferential wall of the sleeve, the end of the sleeve is also fixedly connected with a piston column, a transmission pipeline is provided in the middle of the piston column, and the cavity of the cylinder is divided into two parts, i.e., a liquid inlet cavity and a liquid outlet cavity, by the piston column;

[0008] A liquid inlet spring is assembled at the bottom of the inlet pipeline, a liquid inlet blocking ball is fixedly installed at the top end of the liquid inlet spring, and a liquid inlet pipeline is provided between the liquid inlet cavity and the inlet pipeline.

[0009] In a preferred embodiment of the present application, the diameter of the outlet liquid blocking ball is larger than the diameter of the outlet pipeline, and the extension length of the outlet liquid spring is larger than the length of the sleeve.

[0010] In a preferred embodiment of the present application, the diameter of the inlet liquid blocking ball is larger than the diameter of the inlet pipeline, and the inlet liquid spring drives the inlet liquid blocking ball to block the inlet pipeline through elastic support.

[0011] In a preferred embodiment of the present application, the inlet pipeline is arranged at the bottom of the inlet liquid cavity, and the horizontal height of the inlet pipeline is lower than that of the inlet liquid blocking ball, and the diameter of the inlet pipeline is smaller than that of the inlet liquid blocking ball.

[0012] In a preferred embodiment of the present application, a gap exists between the outlet liquid blocking ball and the inner wall of the outlet liquid spring for the flow of refrigerant fluid.

[0013] In a preferred embodiment of the present application, the inlet pipeline is connected with a refrigerant filling machine, and the outlet pipeline is connected with a refrigeration device.

[0014] In a preferred embodiment of the present application, the extension length of the hydraulic push rod is smaller than the distance between the inlet pipeline and the outlet pipeline.

[0015] In a preferred embodiment of the present application, the length of the piston column is larger than the caliber of the outlet pipeline, and the outlet pipeline still maintains the pipeline connection with the outlet pipeline in the minimum contraction state of the piston column.

[0016] In a preferred embodiment of the present application, the cylinder is arranged horizontally, the hydraulic push rod is horizontally extended and retracted, and is horizontally limited by the pipe wall at the end of the cylinder.

[0017] In a preferred embodiment of the present application, the piston column is attached to the inner wall of the cavity of the cylinder and performs piston movement, and the outer circumferential wall of the piston column is further equipped with a sealing ring.

[0018] Overall, the above technical solutions conceived by the present application have the following beneficial effects compared with the prior art:

[0019] The adaptive flow regulating device for refrigerant filling of the application drives the piston column through the hydraulic cylinder and hydraulic push rod to make the piston column perform piston movement in the cavity of the cylinder body, cooperates the liquid outlet blocking ball and the liquid inlet blocking ball to block and regulate the transmission pipeline and the inlet pipeline, and completes the transfer and filling operation of the refrigerant fluid between the liquid inlet cavity, the liquid outlet cavity, the inlet pipeline and the outlet pipeline. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the application;

[0021] Figure 2 It is a schematic diagram of the side view cross-sectional structure of the application;

[0022] Figure 3 It is a schematic diagram of the cross-sectional structure of the application;

[0023] Figure 4 It is a schematic diagram of the split structure of the application.

[0024] In all the drawings, the same reference signs represent the same technical features, specifically: 1, cylinder body; 2, inlet pipeline; 3, outlet pipeline; 4, hydraulic cylinder; 5, hydraulic rod; 6, sleeve; 7, liquid outlet spring; 8, liquid outlet blocking ball; 9, piston column; 10, transmission pipeline; 11, liquid outlet groove; 12, liquid inlet cavity; 13, liquid outlet cavity; 14, liquid inlet spring; 15, liquid inlet blocking ball; 16, liquid inlet pipeline; 17, sealing ring. DETAILED DESCRIPTION

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the application will be briefly introduced below in combination with the drawings and the description of the embodiments or the prior art. Obviously, the following description of the drawings structure is only some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor. It should be noted that the description of these embodiment modes is used to help understand the application, but does not constitute a limitation on the application.

[0026] Embodiment:

[0027] As shown in Figures 1-4 , the embodiment provides a self-adaptive flow regulating device for refrigerant filling, which comprises a cylinder 1, the cylinder 1 has a cavity inside and is connected with an inlet pipeline 2 and an outlet pipeline 3 at both ends through pipelines, a hydraulic cylinder 4 is assembled at one end of the cylinder 1 close to the outlet pipeline 3, the hydraulic cylinder 4 has a hydraulic push rod 5 and the hydraulic push rod 5 is inserted into the cavity of the cylinder 1, a sleeve 6 is integrally arranged at the end of the hydraulic push rod 5, an outlet spring 7 is assembled in the sleeve 6, and an outlet blocking ball 8 is fixedly installed at the end of the outlet spring 7.

[0028] An outlet groove 11 is arranged on the outer circumferential wall of the sleeve 6 through slotting, a piston column 9 is further fixedly connected at the end of the sleeve 6, a transmission pipeline 10 is arranged in the middle of the piston column 9, and the cavity of the cylinder 1 is divided into two parts, i.e., a liquid inlet cavity 12 and a liquid outlet cavity 13 by the piston column 9.

[0029] A liquid inlet spring 14 is assembled at the bottom of the inlet pipeline 2, a liquid inlet blocking ball 15 is fixedly installed at the top end of the liquid inlet spring 14, and a liquid inlet pipeline 16 is arranged between the liquid inlet cavity 12 and the inlet pipeline 2.

[0030] In a specific application scenario, when the self-adaptive flow regulating device for refrigerant filling is operated, the piston column 9 is driven by the hydraulic cylinder 4 and the hydraulic push rod 5 to perform piston movement in the cavity of the cylinder 1, and the transmission pipeline 10 and the inlet pipeline 2 are adjusted and blocked by the outlet blocking ball 8 and the liquid inlet blocking ball 15, so that the transfer and filling operation of the refrigerant fluid between the liquid inlet cavity 12, the liquid outlet cavity 13, the inlet pipeline 2 and the outlet pipeline 3 is completed. Since the size of the internal cavity of the cylinder 1 is fixed and the extension and retraction driving stroke of the hydraulic push rod 5 driven by the hydraulic cylinder 4 is fixed, the refrigerant fluid transfer flow between the liquid inlet cavity 12 and the liquid outlet cavity 13 is fixed each time, and the filling flow of the outlet pipeline 3 is fixed each time, so that quantitative filling is performed. The self-adaptive flow regulating device for refrigerant filling of the present application is further described below in combination with the application scenario.

[0031] Further, referring to Figures 1-4 , the diameter of the outlet blocking ball 8 is greater than the diameter of the transmission pipeline 10, and the extension length of the outlet spring 7 is greater than the length of the sleeve 6.

[0032] In this embodiment, when the adaptive flow regulating device for refrigerant filling is in operation, in order to make the outflow sealing ball 8 stably and effectively seal the transmission pipeline 10, the diameter of the outflow sealing ball 8 is set to be larger than the diameter of the transmission pipeline 10, so that the outflow sealing ball 8 cannot pass through the transmission pipeline 10, thereby avoiding the risk of sealing failure of the outflow sealing ball 8 to the transmission pipeline 10. At the same time, in order to enable the elasticity of the outflow spring 7 to continuously support the outflow sealing ball 8 and maintain the sealing stability of the outflow sealing ball 8, the extension length of the outflow spring 7 is set to be larger than the length of the sleeve 6, so that the outflow spring 7 can continuously maintain the elastic support to the outflow sealing ball 8 to maintain the sealing to the transmission pipeline 10, thereby facilitating the subsequent transfer operation of the refrigerant fluid between the inflow cavity 12 and the outflow cavity 13.

[0033] More specifically, referring to Figures 1-4 , the diameter of the inflow sealing ball 15 is larger than the diameter of the inlet pipeline 2, and the inflow spring 14 drives the inflow sealing ball 15 to seal the inlet pipeline 2 by elastic support.

[0034] In this embodiment, when the adaptive flow regulating device for refrigerant filling is in operation, in order to maintain the sealing stability of the inflow sealing ball 15 to the inlet pipeline 2 and prevent excessive refrigerant fluid from entering the inflow cavity 12 through the inlet pipeline 2, the diameter of the inflow sealing ball 15 is set to be larger than the diameter of the inlet pipeline 2, so that the inflow sealing ball 15 cannot enter the inlet pipeline 2, thereby preventing the sealing failure of the inflow sealing ball 15 to the inlet pipeline 2 and avoiding the risk of excessive refrigerant fluid rushing into the inflow cavity 12 and causing chaos. The inflow spring 14 drives the inflow sealing ball 15 to stably seal the inlet pipeline 2 by elastic support.

[0035] More preferably, referring to Figures 1-4 , the inflow pipeline 16 is arranged at the bottom of the inflow cavity 12, and the horizontal height of the inflow pipeline 16 is lower than that of the inflow sealing ball 15. The diameter of the inflow pipeline 16 is smaller than that of the inflow sealing ball 15.

[0036] In this embodiment, since the communication state between the inlet pipeline 2 and the inflow pipeline 16 needs to be controlled by the inflow spring 14 and the inflow sealing ball 15, in order to avoid the horizontal height of the inflow pipeline 16 being too high or even exceeding the horizontal height of the inflow sealing ball 15, which leads to the sealing failure of the inflow sealing ball 15 and the unimpeded entry of excessive refrigerant fluid into the inflow cavity 12 through the inflow pipeline 16, causing chaos of the refrigerant fluid that needs to be controlled, the horizontal height of the inflow pipeline 16 is limited, so that the inflow spring 14 and the inflow sealing ball 15 can stably control the sealing function, thereby maintaining the stability of the flow control of the refrigerant fluid.

[0037] Further preferably, referring to Figures 1-4 , there is a gap between the outflow sealing ball 8 and the inner wall of the outflow spring 7 for the flow of refrigerant fluid.

[0038] In the embodiment, during the refrigerant filling operation, the refrigerant fluid needs to be transferred between the liquid inlet cavity 12 and the liquid outlet cavity 13. In order to keep the transfer stable and the transfer channel unblocked, a gap is provided between the liquid outlet blocking ball 8 and the inner wall of the liquid outlet spring 7, so as to avoid the risk that the refrigerant fluid cannot enter the sleeve 6 after the liquid outlet blocking ball 8 unblocks the transmission pipeline 10 and still blocks the channel in the sleeve 6, and keep the channel stable for the refrigerant fluid to pass through the sleeve 6 into the liquid outlet groove 11 and the liquid outlet cavity 13, and keep the transfer function of the refrigerant filling operation stable.

[0039] Further, referring to Figures 1-4 , the inlet pipeline 2 is connected with a refrigerant filling machine, and the outlet pipeline 3 is connected with a refrigeration equipment.

[0040] In the embodiment, the object of the refrigerant filling is between the refrigerant filling machine and the refrigeration equipment. In order to keep the function of flow regulation by the refrigerant filling self-adaptive flow regulating device, and further realize the stability of the refrigerant filling operation, the inlet pipeline 2 is connected with the refrigerant filling machine, and the outlet pipeline 3 is connected with the refrigeration equipment, so that the flow control of the refrigerant fluid is completed in the circulation and transfer process of the inlet pipeline 2 and the outlet pipeline 3, to achieve the function of quantitative filling.

[0041] Further, referring to Figures 1-4 , the extension length of the hydraulic push rod 5 is less than the distance between the inlet pipeline 2 and the outlet pipeline 3.

[0042] In the embodiment, in order to avoid that the extension length of the hydraulic push rod 5 is too long, and in the process of the piston driving of the piston column 9 by the hydraulic cylinder 4 through the hydraulic push rod 5, the piston column 9 slides excessively and collides and impacts with the inner wall of the cylinder 1, causing wear and damage of the cylinder 1, and further reducing the service life and stability of the cylinder 1, the extension length of the hydraulic push rod 5 is set to be less than the distance between the inlet pipeline 2 and the outlet pipeline 3, so as to limit the extension length of the hydraulic push rod 5, so that the piston column 9 keeps a safe distance from both ends of the cavity of the cylinder 1 during the piston movement, avoiding the risk of collision, and improving the service life of the cylinder 1.

[0043] Further, referring to Figures 1-4 , the length of the piston column 9 is greater than the caliber of the outlet pipeline 3, and the outlet pipeline 3 still keeps the pipeline connection with the outlet pipeline 3 in the minimum contraction state of the piston column 9.

[0044] In this embodiment, in order to avoid the piston column 9 from shrinking excessively during the piston movement, the outlet pipe 3 is directly connected with the liquid inlet cavity 12, which causes the refrigerant fluid in the liquid inlet cavity 12 to be directly output through the outlet pipe 3, thereby causing the flow control of the refrigerant fluid to fail, the length of the piston column 9 is greater than the diameter of the outlet pipe 3, and the outlet pipe 3 still maintains the pipe connection with the outlet pipe 3 in the minimum shrinkage state of the piston column 9, the space of the liquid inlet cavity 12 and the liquid outlet cavity 13 is kept independent, the refrigerant fluid is prevented from being mixed, and the flow control function of the refrigerant filling self-adaptive flow regulating device is kept stable.

[0045] Further, referring to Figures 1-4 , the barrel 1 is horizontally arranged, and the hydraulic push rod 5 is horizontally telescoped and horizontally limited by the pipe wall at the end of the barrel 1.

[0046] In this embodiment, during the filling operation of the refrigerant filling self-adaptive flow regulating device, the negative pressure generated by the piston column 9 during the piston movement is mainly used to pull the liquid inlet sealing ball 15, in order to avoid the influence of the negative pressure traction of the refrigerant fluid in the cavity of the barrel 1 on the piston column 9 due to its own gravity in a non-horizontal state, thereby losing the accuracy of the flow control of the refrigerant fluid, the barrel 1 is arranged horizontally, and is horizontally limited by the pipe wall at the end of the barrel 1, so as to keep the stability of the hydraulic cylinder 4 to the hydraulic push rod 5 and the sleeve 6 during the telescoping process, prevent the sliding deviation of the piston column 9, and thereby keep the piston movement of the piston column 9 stable.

[0047] More specifically, referring to Figures 1-4 , the piston column 9 is attached to the inner wall of the cavity of the barrel 1 and performs piston movement, and the outer circumferential wall of the piston column 9 is also provided with a sealing ring 17.

[0048] In this embodiment, in order to stably generate negative pressure traction during the piston movement of the piston column 9 in the cavity of the barrel 1, the sealing ring 17 is also provided on the outer circumferential wall of the piston column 9, so as to improve the sealing between the piston column 9 and the inner wall of the cavity of the barrel 1, thereby preventing air from leaking between the piston column 9 and the inner wall of the cavity of the barrel 1, reducing the negative pressure traction of the piston column 9, and at the same time, the sealing ring 17 can better prevent the mixing of the refrigerant fluid between the liquid inlet cavity 12 and the liquid outlet cavity 13, keep the independence between the liquid inlet cavity 12 and the liquid outlet cavity 13, and stabilize the transfer operation of the refrigerant fluid.

[0049] Working principle:

[0050] The refrigerant filling self-adaptive flow regulating device of the present application, after the refrigerant fluid in the refrigerant pipe machine enters the inlet pipe 2 connected by the pipe, the inlet pipe 2 is elastically supported and driven by the liquid inlet spring 14 at the bottom of the inlet pipe 2 to lift the liquid inlet sealing ball 15 to block the bottom outlet of the inlet pipe 2, so that the refrigerant fluid is temporarily stored in the inlet pipe 2;

[0051] At the same time, the hydraulic cylinder 4 is retracted by driving the hydraulic push rod 5, which drives the sleeve 6 and the piston rod 9 fixedly connected at the end of the hydraulic push rod 5 to retract synchronously, so that the piston rod 9 performs piston movement in the cavity of the cylinder body 1 and gradually moves away from the inlet pipe 2, and the space of the liquid inlet cavity 12 gradually increases, and the space of the liquid outlet cavity 13 gradually decreases. The liquid outlet spring 7 assembled in the sleeve 6 also drives the liquid outlet blocking ball 8 to block the transmission pipe 10 through elasticity, so as to cooperate with the liquid inlet blocking ball 15 to block the inlet pipe 2, so that the liquid inlet cavity 12 forms a sealed space, thereby forming negative pressure in the process of the piston rod 9 moving away from the inlet pipe 2, pulling the liquid inlet blocking ball 15 and the liquid inlet spring 14 to descend, and then restoring the connection between the inlet pipe 2 and the liquid inlet cavity 12, and allowing the refrigerant fluid in the inlet pipe 2 to enter the liquid inlet cavity 12 as the piston rod 9 retracts;

[0052] When the piston rod 9 is extended by driving the hydraulic cylinder 4 through the hydraulic push rod 5, the liquid inlet cavity 12 loses the negative pressure traction on the liquid inlet blocking ball 15, and the liquid inlet spring 14 drives the liquid inlet blocking ball 15 to reset and restore the blocking of the inlet pipe 2 through the release of elasticity. At this time, the liquid inlet cavity 12 restores to a sealed space, but as the piston rod 9 continues to extend, the refrigerant fluid in the liquid inlet cavity 12 will flow into the outlet transmission pipe 10 which is the only remaining outlet at this time under pressure, and when the pressure is greater than the elastic force of the liquid outlet spring 7, the liquid outlet spring 7 will be driven to retract and store energy, and the liquid outlet blocking ball 8 will be separated from the transmission pipe 10, thereby removing the blocking of the transmission pipe 10 by the liquid outlet blocking ball 8, allowing the refrigerant fluid in the liquid inlet cavity 12 to flow into the sleeve 6 through the gap between the liquid outlet blocking ball 8 and the inner wall of the sleeve 6, and forming a pipeline connection through the liquid outlet groove 11 penetratingly opened on the outer wall of the sleeve 6, so that the refrigerant fluid in the liquid inlet cavity 12 flows into the liquid outlet cavity 13 through the transmission pipe 10, the sleeve 6 and the liquid outlet groove 11, completing the refrigerant fluid transfer between the liquid inlet cavity 12 and the liquid outlet cavity 13 once;

[0053] After completing the refrigerant fluid transfer between the liquid inlet cavity 12 and the liquid outlet cavity 13 once, the piston rod 9 will reset and retract again under the drive of the hydraulic cylinder 4 and the hydraulic push rod 5. At this time, the refrigerant fluid in the liquid inlet cavity 12 has been transferred to the liquid outlet cavity 13, so that the liquid outlet spring 7 cannot continue to be pressed, and the liquid outlet spring 7 resets elastically and drives the liquid outlet blocking ball 8 to restore the blocking of the transmission pipe 10, so that the liquid outlet cavity 13 is left with only the outlet pipe 3 as an outlet, thereby allowing the refrigerant fluid in the liquid outlet cavity 13 to be squeezed during the retraction of the piston rod 9, so that the refrigerant fluid can only pass through the outlet pipe 3 to the refrigeration equipment to be filled, completing the filling of the refrigerant fluid once, and repeating the filling operation of the refrigerant fluid as the piston rod 9 continues to move;

[0054] Since the internal cavity size of the cylinder body 1 is fixed, and the extension and retraction driving stroke of the hydraulic cylinder 4 to the hydraulic push rod 5 is fixed, the refrigerant fluid transfer flow between the liquid inlet cavity 12 and the liquid outlet cavity 13 is fixed each time, and the filling flow of the outlet pipeline 3 is fixed each time, and the refrigerant filling self-adaptive flow adjusting device can adjust the filling flow of the refrigerant fluid, control the refrigerant fluid to adapt to the filling demand, and carry out quantitative filling, so as to improve the filling quality and efficiency, and avoid refrigerant waste.

[0055] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the scope of protection of the present application. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A self-adapting flow regulating device for refrigerant filling, comprising a cylinder (1) having a cavity in the cylinder (1) and being connected with an inlet pipe (2) and an outlet pipe (3) at both ends respectively, characterized in that : The barrel (1) is equipped with a hydraulic cylinder (4) near one end of the outlet pipe (3), the hydraulic cylinder (4) has a hydraulic push rod (5) and the hydraulic push rod (5) is inserted into the cavity of the barrel (1), the end of the hydraulic push rod (5) is integrally provided with a sleeve (6), the sleeve (6) is equipped with a liquid outlet spring (7), the end of the liquid outlet spring (7) is fixedly provided with a liquid outlet blocking ball (8). The outer circumferential wall of the sleeve (6) is provided with a liquid outlet groove (11) through the groove, the end of the sleeve (6) is further fixedly connected with a piston column (9), the middle part of the piston column (9) is provided with a transmission pipe (10), the cavity of the barrel (1) is divided into two parts, a liquid inlet cavity (12) and a liquid outlet cavity (13) by the piston column (9); the bottom of the inlet pipe (2) is equipped with a liquid inlet spring (14), the top end of the liquid inlet spring (14) is fixedly provided with a liquid inlet blocking ball (15), a liquid inlet pipe (16) is arranged between the liquid inlet cavity (12) and the inlet pipe (2); The liquid inlet pipe (16) is arranged at the bottom of the liquid inlet cavity (12), and the horizontal height of the liquid inlet pipe (16) is lower than that of the liquid inlet blocking ball (15), the diameter of the liquid inlet pipe (16) is smaller than that of the liquid inlet blocking ball (15); The diameter of the liquid outlet blocking ball (8) is greater than that of the transmission pipe (10), and the extension length of the liquid outlet spring (7) is greater than the length of the sleeve (6); The diameter of the liquid inlet blocking ball (15) is greater than that of the inlet pipe (2), and the liquid inlet spring (14) drives the liquid inlet blocking ball (15) to block the inlet pipe (2) through elastic support.

2. The self-adapting flow regulating device for refrigerant filling according to claim 1, characterized in that, There is a gap between the liquid outlet blocking ball (8) and the inner wall of the liquid outlet spring (7) for the flow of refrigerant fluid.

3. The self-adapting flow regulating device for refrigerant filling according to claim 1, wherein The inlet pipe (2) is connected with a refrigerant filling machine, and the outlet pipe (3) is connected with a refrigeration equipment.

4. The self-adapting flow regulating device for refrigerant filling according to claim 1, wherein The extension length of the hydraulic push rod (5) is less than the distance between the inlet pipe (2) and the outlet pipe (3).

5. The self-adapting flow regulating device for refrigerant filling according to claim 1, wherein The length of the piston column (9) is greater than the caliber of the outlet pipe (3), and the outlet pipe (3) still remains connected with the outlet pipe (3) when the piston column (9) is in the minimum contraction state.

6. The self-adapting flow regulating device for refrigerant filling according to claim 1, wherein The barrel (1) is arranged horizontally, the hydraulic push rod (5) is horizontally extended and limited by the pipe wall at the end of the barrel (1).

7. The self-adapting flow regulating device for refrigerant filling according to claim 1, wherein The piston column (9) is attached to the inner wall of the cavity of the barrel (1) and performs piston movement, and the outer circumferential wall of the piston column (9) is further equipped with a sealing ring (17).

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