CN114477054B

CN114477054B - Refrigerant production filling equipment and use method thereof

Info

Publication number: CN114477054B
Application number: CN202210194898.5A
Authority: CN
Inventors: 叶荣生; 邢君来
Original assignee: Quzhou Yongding Science And Technology Consulting Co ltd
Current assignee: Quzhou Yongding Science And Technology Consulting Co ltd
Priority date: 2022-03-01
Filing date: 2022-03-01
Publication date: 2023-01-03
Anticipated expiration: 2042-03-01
Also published as: CN114477054A

Abstract

The invention discloses refrigerant production filling equipment and a using method thereof, and belongs to the field of refrigerant production. A refrigerant production filling device comprises a working head arranged on a working platform, an external pipe sleeve, a pair of limiting main parts and at least one pressurizing part; a flow guide pipe is arranged on the working head, a flow guide cavity for discharging a refrigerant is formed among the working head, the flow guide pipe and the outer attached pipe sleeve, and an electromagnetic valve is arranged in the flow guide pipe; the external pipe sleeve is wrapped outside the flow guide pipe, and the bottom of the external pipe sleeve is provided with a flow guide port; the outer pipe sleeve is additionally arranged outside the guide pipe, so that the performance that the refrigerant cannot overflow due to misoperation or other reasons after the refrigerant is discharged from the guide pipe is improved, and meanwhile, the outer pipe sleeve can be inserted into the empty filling bottle from the bottle opening of the empty filling bottle during refrigerant filling, so that the guide pipe and the outer pipe sleeve can be comprehensively positioned inside the filling bottle during the refrigerant discharging, and the possibility of refrigerant overflow is reduced.

Description

Refrigerant production filling equipment and use method thereof

Technical Field

The invention relates to the field of refrigerant production, in particular to refrigerant production filling equipment and a using method thereof.

Background

At present, chemical industry enterprise is when the filling of production refrigerant, still use the mode of artifical filling, take the filling title from the pallet with the empty filling bottle of filling usefulness, open the valve of filling bottle, sheathe in the filling mouth, filling refrigerant in the filling bottle, close filling bottle valve after, manual operation equipment detects the quality of filling to the filling bottle, unified transport is stored after accomplishing, current refrigerant production flow adopts the mode intensity of labour of artifical transport and filling great, filling bottle is if not complete stability just carries out the filling, then can have certain filling risk, and probably the workman can be leaked out the refrigerant frostbite at the filling in-process, lead to the filling inefficiency.

Disclosure of Invention

The invention aims to provide a refrigerant production filling device and a using method thereof, aiming at solving the problems in the prior art, the device is provided with an externally attached pipe sleeve outside a guide pipe, so that the performance that the refrigerant cannot overflow due to misoperation or other reasons after the guide pipe discharges the refrigerant is improved, and meanwhile, the outer pipe sleeve can be inserted into the empty filling bottle from the bottle opening of the filling bottle during refrigerant filling, so that the guide pipe and the outer pipe sleeve can be completely positioned in the filling bottle during refrigerant discharging, and the possibility of refrigerant overflow is reduced.

In order to solve the above problems, the present invention adopts the following technical solutions.

A refrigerant production filling device and a using method thereof comprise a working head, a working platform, an external pipe sleeve, a pair of limiting main parts and at least one pressurizing part, wherein the working head is arranged on a working platform; a flow guide pipe is arranged on the working head, a flow guide cavity for discharging a refrigerant is formed among the working head, the flow guide pipe and the outer attached pipe sleeve, and an electromagnetic valve is arranged in the flow guide pipe; the external pipe sleeve is wrapped outside the flow guide pipe, and the bottom of the external pipe sleeve is provided with a flow guide port; the working platform is arranged on the outer layer of the external pipe sleeve, the top end part of the working platform extends to two ends on a straight line, and a working cavity covering the external pipe sleeve is formed in the middle of the working platform in a penetrating manner; the pair of limiting main parts are symmetrically arranged at the bottoms of the extension parts at the two ends of the working platform, each limiting main part comprises a fixed type protection clamp and a movable type protection clamp, the movable type protection clamps are positioned at the periphery of the fixed type protection clamps, and protection air cushions are arranged in the end faces, close to the center side of the working platform, of the fixed type protection clamps and the movable type protection clamps; at least one pressure piece is fixed in work platform, and is equipped with the switching groove with pressure piece sealing connection in the work platform, and the interior symmetry of work platform is equipped with the pressurization main part that transmits the extrusion force to the protection air cushion in from the switching groove.

Further, the external pipe sleeve comprises a fixed sleeve and an external pipe sleeve; the fixed sleeve is arranged on the outer layer of the external attached pipe sleeve, and a spring is connected between the top end of the fixed sleeve and the bottom end of the working head; the outer sleeve is rotationally connected to the bottom of the fixed sleeve, and the outer sleeve is rotationally matched with the working cavity; the flow guide port is arranged at the bottom of the outer sleeve and is divided into a main discharge port and at least two auxiliary discharge ports, the main discharge port is arranged along the discharge direction of the refrigerant, the main discharge port is internally provided with a first liquid discharge switch valve, the at least two auxiliary discharge ports are distributed on the outer sleeve in an annular array mode, and the auxiliary discharge ports are internally provided with a second liquid discharge switch valve.

Furthermore, this has the external screw thread outer surface, and the external screw thread is located the middle part of outer pipe box, is equipped with the internal thread with external screw thread complex in the working chamber top.

Furthermore, the opening size of the main discharge port is larger than that of the auxiliary discharge port; the first liquid discharge switch valve and the second liquid discharge switch valve are opened through the change of fluid pressure, and the required pressure when the first liquid discharge switch valve is opened is larger than the required pressure when the second liquid discharge switch valve is opened.

Furthermore, one end of the pressurizing piece, which is far away from the working platform, is fixedly connected with the outer surface of the fixed sleeve, and the pressurizing piece adopts a corrugated inflating pad.

Further, the pressurizing main part comprises a main transmission port, at least one auxiliary transmission port and a buffer cavity; the protective air cushion is divided into a first air cushion and a second air cushion according to the positions of the fixed protective clamp and the movable protective clamp; the main transmission port is arranged in the working platform and is connected between the switching groove and the first air cushion, a first connecting piece is arranged in the side, close to the first air cushion, of the main transmission port, a second connecting pipe which is matched with the first connecting piece in a magnetic attraction mode is arranged in the side, close to the main transmission port, of the first air cushion, and a first exhaust valve is arranged in the first connecting piece; at least one auxiliary transmission port is symmetrically connected between the switching groove and the cache cavity relative to the main transmission port, a second exhaust valve is arranged in the auxiliary transmission port, and the pressure required by the opening of the second exhaust valve is greater than that required by the opening of the first exhaust valve; the buffer cavity is arranged in the working platform and is communicated with the first air cushion, and a third exhaust valve communicated with the buffer cavity is arranged in the fixed protective clamp; a corrugated pipe is connected between the second air cushion and the buffer cavity.

Furthermore, the fixed type protection clamp slides in the working platform along the refrigerant discharging direction, a first sealing plate and a second sealing plate are respectively arranged in end faces on two sides of the fixed type protection clamp, the first sealing plate is used for isolating a gap between the first air cushion and the first connecting piece, and the second sealing plate is used for isolating a gap between the fixed type protection clamp and the cache cavity so as to ensure the sealing performance of gas in the working platform; the bottom surface of the working platform is connected with the movable protective clamp through an articulated piece, a rotating shaft with a torsion spring is arranged in the articulated piece, and the rotating shaft is fixedly connected with the movable protective clamp; the buffer memory intracavity slides and is equipped with the extrusion piece, and the articulated elements symmetry is equipped with a pair of installation sleeve in the pivot, and the installation sleeve twines the stretch cord outward, and stretch cord one end is passed the extrusion piece and is connected to fixed protection and press from both sides the top.

Furthermore, the buffer cavity is arranged in an inclined manner, and the inclined direction of the buffer cavity is towards the working head, so that gas can be discharged better and the gas in the buffer cavity can be discharged comprehensively as much as possible.

Further, the work platform is convex, and a central portion thereof protrudes in the discharge direction; the inner wall of the protruding part of the working cavity is internally provided with an air bag, the magnetic absorption in the bottom end face of the working cavity is connected with a receiving part, the bottom wall of the transfer groove is internally provided with at least two air guide pipes in an annular array, and one end of each air guide pipe is connected between the inner wall of the working cavity and the air bag.

The use method of the refrigerant production filling equipment comprises the following steps:

s1: the working head is firstly arranged on a workbench, so that the guide pipe is communicated with a pipeline for transmitting the refrigerant;

s2: the working head falls down to be close to the refrigerant filling bottle, so that the outer pipe sleeve is displaced to the mouth of the empty filling bottle, the outer wall of the filling bottle is clamped and stabilized by the fixed type protective clamp or the movable type protective clamp according to the size of the filling bottle in the continuous falling process, and the pressurizing piece transmits gas into the protective air cushion through the pressurizing main piece so as to increase the clamping force;

s3: the electromagnetic valve is opened to enable the refrigerant to flow into the filling bottle through the main discharge port, the working head is gradually lifted along with the increase of the inflow time of the refrigerant, the refrigerant is rotationally discharged from the auxiliary discharge ports at the two ends, and the refrigerant is filled in the filling bottle;

s4: after the filling bottle is filled, the electromagnetic valve is closed, so that the limiting main part is separated from the clamping between the limiting main part and the filling bottle, the air bag can seal the auxiliary discharge ports at the two ends, and the working head waits for the next empty filling bottle.

Compared with the prior art, the invention has the advantages that:

(1) This scheme is through attaching the pipe box outward outside the honeycomb duct to this increases the performance that the honeycomb duct refrigerant can not spill over because of misoperation or other reasons behind the discharge refrigerant, simultaneously, can also be when the refrigerant filling, it is inside through inserting outer pipe box from the bottleneck of empty filling bottle to make honeycomb duct and outer pipe box can be comprehensive when the discharge refrigerant inside the filling bottle, reduce the excessive possibility of refrigerant.

(2) The arrangement of the main discharge port and the auxiliary discharge port provides discharge processes in two directions for the refrigerant, and when the bottom of the empty filling bottle is filled, the outlet of the auxiliary discharge port can be temporarily closed due to the downward pressing of the guide pipe, so that the refrigerant can be discharged from the main discharge port only and fills the bottom of the empty filling bottle. The working head is gradually lifted along with the discharging time of the refrigerant, so that the refrigerant is discharged from the auxiliary discharge port, and the refrigerant discharged from the auxiliary discharge port can be rotationally discharged due to the fact that the outer sleeve and the working cavity form spiral rotation, so that the filling bottles are completely filled.

(3) This scheme presss from both sides and movable protection through fixed protection and presss from both sides and carry out the centre gripping to the empty filling bottle of different diameters respectively, presss from both sides or movable protection through fixed protection and presss from both sides before outer pipe box gets into empty filling bottle bottleneck, and the central point of adjusting empty filling bottle puts and ensures that the bottleneck position communicates with each other with outer pipe box.

(4) According to the scheme, the protective air cushion is additionally arranged in the limiting main part, so that the surface shape of the empty filling bottle is damaged due to overlarge clamping force in the process of ensuring that the limiting main part clamps the empty filling bottle; or because of the centre gripping dynamics undersize and empty filling bottle diameter is less, and do not form fine with holding the effect, can increase the shock-absorbing capacity through the protection air cushion under the aeration effect of pressurization spare to and increase the centre gripping stability to pressurization spare.

(5) This scheme is through setting up the buffer memory chamber, on the one hand, can be used for carrying out temporary storage and holding to unnecessary gas in the pressure member, and on the other hand can carry out gaseous replenishment when being used for the gas in the protection air cushion not enough to increase the stability of empty filling bottle when the filling.

(6) The auxiliary discharge port is blocked by the air bag in the normal state, so that the refrigerant is prevented from flowing out of the auxiliary discharge port after filling, the refrigerant remained at the outlet of the auxiliary discharge port is blocked and guided, and the air bag in the normal state can guide the refrigerant into the accommodating part. When the guide pipe is pressed down, the air bag is expanded through the pressurization state of the pressurization piece, so that the air bag is in contact with the external thread on the outer sleeve and guides the refrigerant into the accommodating piece as much as possible, and the refrigerant is prevented from dripping and frostbite workers.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic perspective view of a first perspective of the present invention;

FIG. 3 is a perspective view of a second perspective of the present invention;

FIG. 4 is a schematic perspective view of the balloon of the present invention in cross-section;

FIG. 5 is a schematic cross-sectional perspective view of a pressing member according to the present invention;

FIG. 6 is a schematic cross-sectional view of a first perspective of the position limiting main part of the present invention;

FIG. 7 is an enlarged schematic view of the present invention at A;

FIG. 8 is a schematic cross-sectional view of a second perspective of the position limiting main part of the present invention;

fig. 9 is a schematic cross-sectional view of a third perspective of the main limiting member according to the present invention.

The reference numbers in the figures illustrate:

the device comprises a working head 1, a flow guide pipe 11, an electromagnetic valve 12, a working platform 2, a working cavity 21, an external pipe sleeve 3, a fixed sleeve 31, an external pipe sleeve 32, a main exhaust port 33, an auxiliary exhaust port 34, a limiting main part 4, a fixed protection clamp 41, a first sealing plate 411, a second sealing plate 412, a movable protection clamp 42, a hinge 421, an installation sleeve 422, an extrusion block 423, an elastic rope 424, a pressurizing part 5, a switching groove 51, a main transmission port 52, a first connecting piece 521, a first exhaust valve 522, a third exhaust valve 523, an auxiliary transmission port 53, a second exhaust valve 531, a corrugated pipe 532, a buffer cavity 54, an air bag 6, a containing part 61, an air guide pipe 62, a protection air cushion 7, a first air cushion 71 and a second air cushion 72.

Detailed Description

Referring to fig. 1-9, a refrigerant filling apparatus and method for using the same includes a working head 1 mounted on a working platform, a working platform 2, an external pipe sleeve 3, a pair of main limiting members 4, and at least one pressurizing member 5; a flow guide pipe 11 is arranged on the working head 1, a flow guide cavity for discharging a refrigerant is formed among the working head 1, the flow guide pipe 11 and the external pipe sleeve 3, and an electromagnetic valve 12 is arranged in the flow guide pipe 11; the outer attached pipe sleeve 3 is wrapped outside the flow guide pipe 11, and the bottom of the outer attached pipe sleeve 3 is provided with a flow guide port; the working platform 2 is arranged on the outer layer of the external pipe sleeve 3, the top end part of the working platform 2 extends towards two ends on a straight line, and a working cavity 21 covering the external pipe sleeve 3 is formed in the middle of the working platform 2 in a penetrating manner; the pair of limiting main parts 4 are symmetrically arranged at the bottoms of the extension parts at the two ends of the working platform 2, each limiting main part 4 comprises a fixed type protection clamp 41 and a movable type protection clamp 42, each movable type protection clamp 42 is positioned at the periphery of the corresponding fixed type protection clamp 41, and the fixed type protection clamp 41 and the movable type protection clamp 42 are provided with protection air cushions 7 close to the side end faces of the center of the working platform 2; at least one pressure piece 5 is fixed in the working platform 2, an adapter groove 51 which is connected with the pressure piece 5 in a sealing way is arranged in the working platform 2, and pressure main pieces which transmit the extrusion force to the protective air cushion 7 from the adapter groove 51 are symmetrically arranged in the working platform 2.

Referring to fig. 1-3, the external sleeve 3 includes a fixed sleeve 31 and an external sleeve 32; the fixed sleeve 31 is arranged on the outer layer of the outer attached pipe sleeve 3, and a spring is connected between the top end of the fixed sleeve 31 and the bottom end of the working head 1; the outer sleeve 32 is rotationally connected to the bottom of the fixed sleeve 31, and the outer sleeve 32 is rotationally matched with the working cavity 21; the diversion port is arranged at the bottom of the outer pipe sleeve 32 and is divided into a main discharge port 33 and at least two auxiliary discharge ports 34, the main discharge port 33 is arranged along the discharge direction of the refrigerant, a first liquid discharge switch valve is arranged in the main discharge port 33, at least two auxiliary discharge ports 34 are distributed on the outer pipe sleeve 32 in an annular array mode, and a second liquid discharge switch valve is arranged in the auxiliary discharge port 34. Referring to fig. 3-4, the outer surface of the outer jacket 32 has an external thread, and the external thread is located in the middle of the outer jacket 32, and an internal thread matching the external thread is disposed in the top of the working chamber 21. Referring to fig. 2-3, the opening size of the main discharge port 33 is larger than the opening size of the sub discharge port 34; the first liquid discharge switch valve and the second liquid discharge switch valve are opened through the change of fluid pressure, and the required pressure when the first liquid discharge switch valve is opened is larger than the required pressure when the second liquid discharge switch valve is opened.

Referring to fig. 1-4, an end of the pressing member 5 away from the working platform 2 is fixedly connected to an outer surface of the fixing sleeve 31, and the pressing member 5 is a corrugated inflating pad.

Referring to fig. 5-7, the pressurized main part includes a main transfer port 52, at least one secondary transfer port 53, and a buffer chamber 54; the protective air cushion 7 is divided into a first air cushion 71 and a second air cushion 72 according to the positions of the fixed protective clamp 41 and the movable protective clamp 42; the main transmission port 52 is arranged in the working platform 2, the main transmission port 52 is connected between the transfer groove 51 and the first air cushion 71, a first connecting piece 521 is arranged in the side, close to the first air cushion 71, of the main transmission port 52, a second connecting pipe magnetically matched with the first connecting piece 521 is arranged in the side, close to the main transmission port 52, of the first air cushion 71, and a first exhaust valve 522 is arranged in the first connecting piece 521; at least one auxiliary transmission port 53 is symmetrically connected between the transfer groove 51 and the buffer cavity 54 relative to the main transmission port 52, a second exhaust valve 531 is arranged in the auxiliary transmission port 53, and the pressure required by opening the second exhaust valve 531 is greater than the pressure required by opening the first exhaust valve 522; the buffer cavity 54 is arranged in the working platform 2, the buffer cavity 54 is communicated with the first air cushion 71, and a third exhaust valve 523 communicated with the buffer cavity 54 is arranged in the fixed protective clamp 41; a bellows 532 is connected between the second air spring 72 and the buffer chamber 54.

Referring to fig. 6-8, the fixed protective clip 41 and the movable protective clip 42 are both arc-shaped, the fixed protective clip 41 slides in the working platform 2 along the refrigerant discharging direction, a first sealing plate 411 and a second sealing plate 412 are respectively disposed in the end surfaces of both sides of the fixed protective clip 41, the first sealing plate 411 is used for isolating the gap between the first air cushion 71 and the first connecting member 521, and the second sealing plate 412 is used for isolating the gap between the fixed protective clip 41 and the buffer chamber 54, so as to ensure the sealing performance of the gas in the working platform 2; the bottom surface of the working platform 2 is connected with the movable protective clamp 42 through a hinge 421, a rotating shaft with a torsion spring is arranged in the hinge 421, and the rotating shaft is fixedly connected with the movable protective clamp 42; the buffer cavity 54 is provided with a pressing block 423 in a sliding manner, the rotating shaft is provided with a pair of mounting sleeves 422 symmetrically relative to the hinge 421, elastic ropes 423 are wound outside the mounting sleeves 422, and one end of each elastic rope 423 penetrates through the pressing block 423 and is connected to the top of the fixed type protection clamp 41. The buffer chamber 54 is disposed in an inclined manner, and the inclined direction of the buffer chamber 54 is toward the working head 1, so as to better discharge the gas and discharge the gas in the buffer chamber 54 as completely as possible.

Referring to fig. 4, the work platform 2 is convex, and a central portion thereof protrudes in the discharge direction; be equipped with gasbag 6 in the inner wall of working chamber 21 protruding portion, the magnetism is inhaled in the working chamber 21 bottom end face and is connected with holding piece 61, and two at least air ducts 62 of annular array in the diapire of switching groove 51, air duct 62 one end are connected to between working chamber 21 inner wall and the gasbag 6.

The worker firstly installs the working head 1 on the workbench to communicate the guide pipe 11 with the pipeline for transmitting the refrigerant. Afterwards, when the staff puts the empty filling bottle on the workstation, accessible operation working head 1 removes towards the empty filling bottle bottleneck for spacing main part 4 takes precedence and empty filling bottle surface contact.

At this time, the clamping of the limiting main part 4 to the empty filling bottle is adjusted according to the diameter of the empty filling bottle, if the diameter of the empty filling bottle is small, the fixed type protective clamps 41 on the two sides are close to the inner wall of the working cavity 21 side and can be contacted with the outer surface of the empty filling bottle, and the bottle mouth of the empty filling bottle is sequentially positioned. When the working head 1 is brought close to the empty filling bottle, the protruding part on the working platform 2 and the outer sleeve 32 enter the empty filling bottle along the mouth of the empty filling bottle until the extending parts at the two ends of the working platform 2 are contacted with the top of the empty filling bottle. At this time, when the working head 1 is pressed down, the air in the pressurizing member 5 is squeezed into the adapting groove 51, and since the pressure required for opening the first exhaust valve 522 is smaller than the pressure required for opening the second exhaust valve 531, the air enters the first air cushion 71 through the main transfer port 52 and the second connecting pipe magnetically engaged with the first connecting member 521, the first air cushion 71 is inflated to clamp the empty filling bottle, and the redundant air enters the buffer chamber 54 through the third exhaust valve 523, the auxiliary transfer port 53 and the second exhaust valve 531 to be temporarily collected.

When the outer jacket 32 is gradually moved into the empty filling bottle, the outer jacket 32 rotates in the process of moving down due to the threaded fit between the external threads on the outer jacket 32 and the internal threads on the working chamber 21 until the flow guide tube 11 moves down to the outer surface thereof to close the auxiliary discharge port 34, and meanwhile, the spring is in a compression deformation state. During the movement of the working head 1, the air bag 6 expands due to the air pressure extrusion force of the pressurizing member 5, so that the air bag 6 can be in contact with the external thread on the outer sleeve 32, refrigerant obtained by the contact of the air bag 6 and the auxiliary discharge port 34 is removed under the rotation action of the external thread, and the refrigerant is collected in the container 61. Then, the operator moves the refrigerant in the refrigerant conveying pipeline to the outer jacket 32 along the flow guide pipe 11 by opening the electromagnetic valve 12, and fills the refrigerant into the filling bottle from the first liquid discharge switch valve. The working head 1 is gradually lifted along with the discharge time of the refrigerant, so that the outer surface of the flow guide pipe 11 gradually moves upwards to open the auxiliary discharge port 34 again, the refrigerant originally discharged from the main discharge port 33 is discharged from the auxiliary discharge ports 34 at two sides along with the change of the lifting degree of the working head 1, and the outer pipe sleeve 32 rotates, so that the refrigerant discharged from the second liquid discharge switch valve can gradually fill the filling bottle from the periphery of the inner wall of the filling bottle, the original filling path is changed, and the refrigerant around the first liquid discharge switch valve can be drained firstly without causing the leakage of the redundant refrigerant.

When the diameter of the outer surface of the filling bottle is large, when the working head 1 moves downward, the fixed type protection clamp 41 moves upward due to contacting with the filling bottle, the elastic rope 424 drives the mounting sleeve 422 to rotate toward the working chamber 21, so that the rotating shaft drives the movable type protection clamp 42 to rotate together to clamp the outer surface of the filling bottle, and the gas in the pressurizing member 5 is transmitted into the second air cushion 72 along the corrugated pipe 532 through the auxiliary transmission port 53 and the buffer chamber 54. In the process of moving the fixed type protective clamp 41 upwards, the first sealing plate 411 closes the through port of the first connecting member 521, and the second sealing plate 412 closes the communication between the first air cushion 71 and the buffer chamber 54, and simultaneously, the elastic rope 424 drives the squeezing block 423 to move upwards in an inclined manner, so that the air in the buffer chamber 54 enters the second air cushion 72 as much as possible, and the second air cushion 72 stabilizes the filling bottle.

After filling, the electromagnetic valve 12 is closed, the outer jacket 32 and the projection of the work platform 2 temporarily stay at the mouth of the filling bottle, and the pressurizing member 5 gradually and completely withdraws the previously released gas, so that the airbag 6 contacts the secondary outlet 34 and guides the residual refrigerant outside the secondary outlet 34 into the receiving member 61. Finally, the working platform 2 is completely separated from the filling bottle, and the next empty filling bottle is waited.

Claims

1. A refrigerant production filling equipment which characterized in that: comprises a working head (1) arranged on a working table, a working platform (2), an externally attached pipe sleeve (3), a pair of limiting main parts (4) and at least one pressurizing part (5);

a flow guide pipe (11) is arranged on the working head (1), a flow guide cavity for discharging a refrigerant is formed among the working head (1), the flow guide pipe (11) and the outer attached pipe sleeve (3), and an electromagnetic valve (12) is arranged in the flow guide pipe (11);

the outer attached pipe sleeve (3) is wrapped outside the guide pipe (11), and the bottom of the outer attached pipe sleeve (3) is provided with a guide port; the working platform (2) is arranged on the outer layer of the external pipe sleeve (3), the top end part of the working platform (2) extends towards two ends on a straight line, and a working cavity (21) covering the external pipe sleeve (3) is formed in the middle of the working platform (2) in a penetrating manner; the pair of limiting main parts (4) are symmetrically arranged at the bottoms of the extension parts at the two ends of the working platform (2), each limiting main part (4) comprises a fixed type protection clamp (41) and a movable type protection clamp (42), each movable type protection clamp (42) is positioned at the periphery of the fixed type protection clamp (41), and protection air cushions (7) are arranged in the side end faces, close to the center of the working platform (2), of the fixed type protection clamp (41) and the movable type protection clamp (42); at least one pressurizing piece (5) is fixed in the working platform (2), a switching groove (51) which is connected with the pressurizing piece (5) in a sealing way is arranged in the working platform (2), and a pressurizing main piece which transmits the extrusion force from the switching groove (51) to the protective air cushion (7) is symmetrically arranged in the working platform (2);

the external pipe sleeve (3) comprises a fixed sleeve (31) and an external pipe sleeve (32);

the fixed sleeve (31) is arranged on the outer layer of the external pipe sleeve (3), and a spring is connected between the top end of the fixed sleeve (31) and the bottom end of the working head (1);

the outer sleeve (32) is rotationally connected to the bottom of the fixed sleeve (31), and the outer sleeve (32) is rotationally matched with the working cavity (21);

the flow guide port is arranged at the bottom of the outer sleeve (32), the flow guide port is divided into a main discharge port (33) and at least two auxiliary discharge ports (34), and the main discharge port (33) is arranged along the discharge direction of the refrigerant; a first liquid discharge switch valve is arranged in the main discharge port (33), at least two auxiliary discharge ports (34) are distributed on the outer pipe sleeve (32) in an annular array, and a second liquid discharge switch valve is arranged in the auxiliary discharge ports (34);

the outer surface of the outer pipe sleeve (32) is provided with an external thread, the external thread is positioned in the middle of the outer pipe sleeve (32), and an internal thread matched with the external thread is arranged in the top of the working cavity (21).

2. The refrigerant producing and filling apparatus according to claim 1, wherein: the opening size of the main discharge port (33) is larger than that of the auxiliary discharge port (34); the first liquid discharge switch valve and the second liquid discharge switch valve are opened through the change of fluid pressure, and the required pressure when the first liquid discharge switch valve is opened is larger than the required pressure when the second liquid discharge switch valve is opened.

3. The refrigerant producing and filling apparatus according to claim 1, wherein: one end of the pressurizing piece (5) far away from the working platform (2) is fixedly connected with the outer surface of the fixed sleeve (31), and the pressurizing piece (5) adopts a corrugated inflating pad.

4. The refrigerant producing and filling apparatus according to claim 1, wherein: the pressurized main part comprises a main transfer port (52), at least one secondary transfer port (53) and a buffer chamber (54);

the protective air cushion (7) is divided into a first air cushion (71) and a second air cushion (72) according to the positions of the fixed protective clamp (41) and the movable protective clamp (42);

the main transmission port (52) is arranged in the working platform (2), the main transmission port (52) is connected between the transfer groove (51) and the first air cushion (71), a first connecting piece (521) is arranged in the side, close to the first air cushion (71), of the main transmission port (52), a second connecting pipe which is matched with the first connecting piece (521) in a magnetic attraction mode is arranged in the side, close to the main transmission port (52), of the first air cushion (71), and a first exhaust valve (522) is arranged in the first connecting piece (521);

at least one auxiliary transmission port (53) is symmetrically connected between the transfer groove (51) and the buffer cavity (54) relative to the main transmission port (52), a second exhaust valve (531) is arranged in the auxiliary transmission port (53), and the pressure required by opening the second exhaust valve (531) is greater than the pressure required by opening the first exhaust valve (522);

the buffer cavity (54) is arranged in the working platform (2), the buffer cavity (54) is communicated with the first air cushion (71), and a third exhaust valve (523) communicated with the buffer cavity (54) is arranged in the fixed type protection clamp (41); a bellows (532) is connected between the second cushion (72) and the buffer chamber (54).

5. The refrigerant producing and filling apparatus according to claim 4, wherein: the fixed type protection clamp (41) slides in the working platform (2) along the refrigerant discharging direction, and a first sealing plate (411) and a second sealing plate (412) are respectively arranged in the end surfaces of two sides of the fixed type protection clamp (41);

the bottom surface of the working platform (2) is connected with the movable protective clamp (42) through a hinge piece (421), a rotating shaft with a torsion spring is arranged in the hinge piece (421), and the rotating shaft is fixedly connected with the movable protective clamp (42); an extrusion block (423) is arranged in the cache cavity (54) in a sliding mode, a pair of installation sleeves (422) is symmetrically arranged on the rotating shaft relative to the hinge piece (421), elastic ropes (424) are wound outside the installation sleeves (422), and one end of each elastic rope (424) penetrates through the extrusion block (423) and is connected to the top of the fixed type protection clamp (41).

6. The refrigerant producing and filling apparatus according to claim 4, wherein: the buffer cavity (54) is arranged in an inclined shape, and the inclined direction of the buffer cavity (54) faces to the working head (1).

7. The refrigerant producing and filling apparatus according to claim 1, wherein: the working platform (2) is convex, and the central part of the working platform protrudes along the discharging direction; be equipped with gasbag (6) in the inner wall of working chamber (21) protruding portion, working chamber (21) bottom end face internal magnetism is inhaled and is connected with holding piece (61), two at least air duct (62) of annular array in the diapire of switching groove (51), and air duct (62) one end is connected to between working chamber (21) inner wall and gasbag (6).

8. Use of a refrigerant filling apparatus according to any one of claims 1 to 7, wherein: the method comprises the following steps:

s1: the working head (1) is firstly installed on a workbench, so that the guide pipe (11) is communicated with a pipeline for transmitting a refrigerant;

s2: the working head (1) falls to be close to a refrigerant filling bottle, so that the outer pipe sleeve (32) is displaced to the mouth of an empty filling bottle, the outer wall of the filling bottle is clamped and the filling bottle is stabilized through the fixed type protective clamp (41) or the movable type protective clamp (42) according to the size of the filling bottle in the continuous falling process, and the pressurizing piece (5) transmits gas into the protective air cushion (7) through the pressurizing main piece so as to increase the clamping force;

s3: the electromagnetic valve (12) is opened to enable the refrigerant to flow into the filling bottle through the main discharge port (33), the working head (1) is gradually lifted along with the increase of the inflow time of the refrigerant, the refrigerant is rotationally discharged from the auxiliary discharge ports (34) at the two ends, and the interior of the filling bottle is filled;

s4: after filling bottles are filled, the electromagnetic valve (12) is closed to enable the limiting main part (4) to be separated from clamping with the filling bottles, the air bag (6) can close the auxiliary discharge ports (34) at two ends, and the working head (1) waits for the next empty filling bottle.