CN214666307U - Interface assembly - Google Patents

Abstract

The utility model provides an interface module, include: the coil pipe connecting seat is embedded in the outer cylinder and used for the coil pipe to penetrate through; the movable joint is partially sleeved at the inlet and outlet ends of the flowing medium of the coil pipe, the tail end of the movable joint is connected with the welding pipe, the tail end of the welding pipe is connected with two oppositely arranged flange plates, and a short pipe used for being connected with the tail end of the welding pipe is embedded in the flange plate close to the tail end of the welding pipe; and the connecting piece is sleeved at the tail end of the movable joint and is used for embedding the welding pipe therein so as to connect the movable joint and the welding pipe. The utility model provides a thereby can't carry out quick assembly disassembly to the business turn over end of coil pipe among the prior art and carry out the problem that the user of being convenient for overhauld heat exchange device not.

Description

Interface assembly

Technical Field

The utility model relates to an interface assembly field, more specifically relates to an interface module.

Background

The heat exchanger generally comprises a shell and a coil, and when the heat exchanger performs heat exchange, heat exchange is performed in the heat exchanger through a heat exchange medium flowing through the coil and a heat exchange medium flowing out of the coil.

Generally, the inlet end or the outlet end of the coil is fixed by welding or the like after the coil extends out of the shell, so that a user is inconvenient to disassemble, assemble and maintain the heat exchange device.

In view of the above, there is a need for an improved interface mechanism for coiled tubing in the prior art to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to disclose an interface module, solve among the prior art unable problem of carrying out quick assembly disassembly to the business turn over end of coil pipe.

In order to achieve the above object, the present invention provides an interface assembly, including:

the coil pipe connecting seat is embedded in the outer cylinder and used for the coil pipe to penetrate through;

the movable joint is partially sleeved at the inlet and outlet ends of the flowing medium of the coil pipe, the tail end of the movable joint is connected with a welding pipe, the tail end of the welding pipe is connected with two oppositely arranged flange plates, and a short pipe used for being connected with the tail end of the welding pipe is embedded in the flange plate close to the tail end of the welding pipe; and the number of the first and second groups,

and the connecting piece is sleeved at the tail end of the movable joint and is used for embedding the welding pipe therein so as to connect the movable joint and the welding pipe.

As a further improvement of the present invention, the flange is formed with a medium circulation hole, and is close to the flange orientation at the end of the welding pipe one side of the short pipe is followed the edge of the medium circulation hole is formed with a vertical annular projection for the short pipe to be embedded in.

As a further improvement, the outer diameter is smaller than between two relative ring flanges that set up the annular gasket of the outer diameter of ring flange, just annular gasket's through-hole size with the medium flow through-hole's of ring flange size is the same.

As a further improvement of the utility model, the anchor ring of ring flange is formed with a plurality of mounting holes, and the position of a plurality of mounting holes of two ring flanges is relative to the mounting hole that the position is relative in supplying stud subassembly vertically to run through two ring flanges.

As a further improvement of the utility model, the coil pipe joint chair runs through the bottom of urceolus, just the coil pipe joint chair stretches into extremely one end in the urceolus forms to keeping away from the stop part that the longitudinal axis direction of coil pipe joint chair extended and laminated with the internal face of urceolus bottom, the coil pipe joint chair is followed another pot head that the urceolus stretches out is equipped with the locating part with the outer wall butt of urceolus bottom.

As a further improvement of the present invention, the locating part is configured as a lock nut, and at least the coil pipe connecting seat is exposed from the side wall surface outside the bottom of the outer cylinder to a thread wall surface.

As a further improvement, the outer wall that inlays in the coil pipe joint chair bottom the urceolus forms the ring channel that is used for arranging first sealing washer, the outer wall of coil pipe joint chair with the second sealing washer has been arranged between the barrier.

As a further improvement of the utility model, the connecting piece configuration is coupling nut, just the end of union inlay in coupling nut in order with coupling nut's internal face threaded connection, the top of welded pipe inlay in the coupling nut.

As a further improvement of the utility model, coupling nut's terminal end face be formed with the internal diameter with the spacing portion of annular that the horizontal end face size of welded pipe matches, the horizontal terminal surface of welded pipe be formed with to keep away from the longitudinal axis direction extend with the annular extension of the laminating of the spacing portion of annular.

As a further improvement of the utility model, a screwed pipe is penetrated through the bottom of the outer barrel, and the ball valve with the screw plug embedded at the tail end is arranged at the tail end of the screwed pipe.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a flowing medium business turn over end stretches out the urceolus back cover through inserting the coil pipe joint chair that inlays in the urceolus and establishes the union to dock union and welded pipe together through the connecting piece, and the terminal nozzle stub with the embedding ring flange of welded pipe links to each other, is connected with welded pipe with the ring flange that realizes two relative settings. Therefore, the utility model discloses an interface module simple structure, easy dismounting can realize carrying out the dismouting to the interface module of flow medium business turn over end (like flow medium entrance point or flow medium exit end) fast to improve heat transfer device's work efficiency. The problem of among the prior art can't carry out quick assembly disassembly to the business turn over end of coil pipe is solved.

Drawings

Fig. 1 is a schematic exploded view of a heat exchange device according to an embodiment of the present invention;

FIG. 2 is a schematic perspective view of a heat exchange device according to one embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of a heat exchange device according to one embodiment of the present invention;

FIG. 4 is a schematic enlarged view at A in FIG. 1;

FIG. 5 is a schematic enlarged view at B in FIG. 3;

FIG. 6 is a schematic enlarged view at C in FIG. 5;

FIG. 7 is a schematic block diagram of a top cover of one embodiment of the present invention;

fig. 8 is a schematic structural view of a guide shell according to an embodiment of the present invention.

Detailed Description

The present invention is described in detail with reference to the embodiments shown in the drawings, but it should be understood that these embodiments are not intended to limit the present invention, and those skilled in the art should understand that the functions, methods, or structural equivalents or substitutions made by these embodiments are within the scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", "positive", "negative", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Please refer to fig. 1 to fig. 3, which illustrate a specific embodiment of a heat exchange device of the present invention.

Please refer to fig. 1 to 8 for a heat exchange device according to an embodiment of the present invention.

As described with reference to fig. 1 to 8, the present embodiment provides a heat exchange device, including: an outer cylinder 10; the guide cylinder 20 is longitudinally suspended in the outer cylinder 10 and forms a preset distance with two transverse end surfaces of the outer cylinder 10, and a longitudinal axis 200 of the guide cylinder 20 is parallel to or overlapped with a longitudinal axis 100 of the outer cylinder 10. In the embodiment of fig. 1, the longitudinal axis 200 of the guide shell 20 overlaps the longitudinal axis 100 of the outer shell 10. When the longitudinal axis 200 of the guide cylinder 20 is parallel to and does not overlap with the longitudinal axis 100 of the outer cylinder 10, the guide cylinder 20 is disposed at a position offset from the central axis (i.e., the longitudinal axis 100) of the outer cylinder 10, which is not shown in the drawings. The outer cylinder 10 is provided with a refrigerant inlet 101 for conveying a heat exchange medium therein and a refrigerant outlet 102 for discharging the heat exchange medium; the heat exchange device further comprises a coil 30 surrounding the outer wall of the guide cylinder 20 and forming a preset interval with the outer side of the guide cylinder 20 and the inner side of the outer cylinder 10 (the coil 30 is generally spirally wound on the outer side wall of the guide cylinder 20), wherein the flowing medium inlet end 301 and the flowing medium outlet end 302 of the coil 30 respectively extend out from two transverse end surfaces of the outer cylinder 10.

The coolant import that the heat transfer device urceolus 10 of this embodiment was seted up carries heat transfer medium in to urceolus 10, because the effect of draft tube 20, make heat transfer medium flow through the region between the coil pipe that encircles the draft tube 20 outer wall and the draft tube 20 outside, and the region between coil pipe 30 and the urceolus 10 inboard, discharge through the coolant export that urceolus 10 was seted up, and heat transfer medium flows through and constitutes to predetermine spaced region between the coil pipe that encircles the draft tube 20 outer wall and the draft tube 20 outside, and when constituting to predetermine spaced region between coil pipe 30 and the urceolus 10 inboard, can effectively carry out the heat transfer to the medium that flows in the coil pipe 30, and the heat exchange efficiency is improved. Therefore, the problem that the heat exchange efficiency of the heat exchanger in the prior art is low is solved. The guide shell 20 is suspended in the outer cylinder 10 to form a predetermined distance from the two lateral end surfaces of the outer cylinder 10, so that the guide shell 20 can avoid the pipe holes 301 'and 302' provided on the two lateral end surfaces of the outer cylinder 10 and used for extending the flowing medium inlet end 301 and the flowing medium outlet end 302 of the coil 30 respectively.

In the above embodiment, the end surface of the guide cylinder 20 near the refrigerant outlet 102 is formed with a cover 201, and the start end surface of the guide cylinder 20 opposite to the end surface of the guide cylinder 20 is opened with an opening 202.

So set up, because the block effect of closing cap 201 that draft tube 20 terminal surface formed for heat transfer medium in the draft tube 20 cavity can only get into the region between coil pipe 30 and the draft tube 20 outside, the region between coil pipe 30 and the urceolus 10 inboard through uncovered 202, promptly, make the heat transfer medium that gets into in the urceolus 10 by refrigerant import 101 circulate to refrigerant export 102 through the region (also be close to the space that coil pipe 30 coiled the encirclement) in the draft tube 20 outside, in order to discharge through refrigerant export 102. From this, can reduce heat exchange medium's flow area for heat exchange medium circulates in the region (being close to the space that coil 30 coiled the encirclement) of draft tube 20 outside, with further promotion to the effect of the heat transfer of flow medium in coil 30.

Wherein, the cover 201 is formed with at least one vent hole 204 for only ventilating air in the guide cylinder 20. The vents 204 may be configured one, two, three, four, etc. The plurality of air holes 204 are generally configured as circular through holes, rectangular through holes, oval through holes, polygonal through holes, etc., and the sizes of the plurality of air holes 204 may be the same or approximately the same, or different from each other, but the sizes of the plurality of air holes 204 are within the working requirement. Specifically, when the vent hole 204 is configured as a circular through hole, the radial dimension of the vent hole 204 may be configured to be 0.5 to 2mm, and particularly may be configured to be 0.5 to 1 mm. With the arrangement, the heat exchange medium in the guide shell 20 is subjected to great resistance, so that the heat exchange medium can only flow out of the opening 202 formed in the initial end surface of the guide shell 20 and cannot flow out of the vent holes 204, and the gas in the guide shell 20 can be effectively discharged through the action of the vent holes 204.

Further, the outer cylindrical housing 10 is formed at a lateral distal end face thereof with a top cover 103 (the top cover 103 is formed with a tube hole 301 through which the flowing medium inlet end 301 of the coil 30 is projected), and a lateral leading end face of the outer cylindrical housing 10 is covered with a bottom cover 105. The cover 201 is formed with a connecting rod 203 longitudinally extending to the inner side surface of the top cover 103 to be connected with the top cover 103.

In one embodiment, the top cover 103 further forms a refrigerant outlet 102 and an air outlet 104 for discharging air in the outer tub 10. The air outlet 104 can be provided with a plug screw 1041, and the plug screw 1041 is sleeved with a sealing ring 1042 to improve the sealing performance of the air outlet 104, and when the air in the outer cylinder 10 needs to be discharged, the plug screw 1041 is removed, the heat exchange medium enters the outer cylinder 10 until the outer cylinder 10 is fully soaked and overflows from the air outlet 104 of the outer cylinder top cover 103, so that the gas can be discharged, and the plug screw 1041 is mounted after the gas is discharged.

It should be understood that the guide cylinder 20 is connected to the inner side of the top cover 103 through the connecting rod 203, so that the guide cylinder 20 is suspended in the outer cylinder 10, and thus, a preset distance is formed between the guide cylinder 20 and the top cover 103 formed at the transverse end surface of the outer cylinder 103, and the sealing cover 201 on the guide cylinder 20 is ensured to avoid the pipe hole 301 'through which the flowing medium inlet end 301 of the coil 30 extends, so that the flowing medium inlet end 301 does not only extend from the pipe hole 301' of the top cover 103, and the air in the outer cylinder 10 is not influenced to be discharged through the air outlet 104, and the heat exchange medium in the outer cylinder 10 is not influenced to be discharged through the refrigerant outlet 102.

In another embodiment, the top cover 103 is formed with only a tube hole 301' through which the flowing medium inlet end 301 of the coil 30 extends and an air outlet hole 104 for discharging air in the outer tub 10, and the refrigerant inlet 101 is formed in a sidewall of the outer tub 10, and the refrigerant inlet 101 is not shown in the figure and is formed in a sidewall of the outer tub 10. In addition, the refrigerant outlet 102 may be formed on a sidewall of the outer tube 10, and a longitudinal position of the refrigerant inlet 101 is lower than a longitudinal position of the refrigerant outlet 102. The bottom cover 105 may be formed with a refrigerant inlet 101. the bottom cover 105 is not shown to be formed with a refrigerant inlet 101.

In any of the above embodiments, the flowing medium access end of the coil 30 specifically includes: a flowing medium inlet end 301 and a flowing medium outlet end 302, and both the flowing medium inlet end 301 and the flowing medium outlet end 302 are provided with an interface assembly.

The interface assembly configured at the flowing medium outlet end 302 is taken as an example for explanation, and the interface assembly of this embodiment includes: a coil pipe seat 401 embedded in the outer cylinder 10 and through which the coil pipe 30 passes (specifically, the coil pipe seat 401 may pass through the bottom cover 105); the movable joint 402 is partially sleeved on the flowing medium outlet end 302 of the coil pipe 30, the end of the movable joint 402 is connected with the welded pipe 403, and the end of the welded pipe 403 is connected with two oppositely arranged flanges 404. Wherein a short tube 405 for connecting to the end of the welded pipe 403 is embedded in the flange 404 near the end of the welded pipe 403. The interface assembly also includes a connector 406 that is sleeved over the end of the union 402 and into which the welded tube 403 is inserted to connect the union 402 with the welded tube 403.

The flowing medium outlet end 302 of the present embodiment extends out of the outer cylinder 10 through the coil pipe joint 401 embedded in the outer cylinder 10, and then is sleeved with the union 402, and the union 402 is butted with the welded pipe 403 through the connecting piece 406, and the end of the welded pipe 403 is connected with the short pipe 405 embedded in the flange 404, so as to connect the two oppositely arranged flanges with the welded pipe. Therefore, the interface assembly of the embodiment is simple in structure and convenient to disassemble and assemble, so that the interface assembly of the flowing medium outlet end 302 can be rapidly disassembled and assembled, and the working efficiency of the heat exchange device is improved. The problem of among the prior art can't carry out quick assembly disassembly to the business turn over end of coil pipe thereby the user of being inconvenient for overhauls heat transfer device is solved.

It will be appreciated that the flange 404 is formed with a medium flow opening 4041 and that the side of the flange towards the stub 405 near the end of the welded tube 403 is formed with a longitudinal annular projection 4042 along the edge of the medium flow opening 4041 in which the stub 405 is embedded. The ring surfaces of the two flanges 404 are respectively formed with a plurality of mounting holes 4043, and the mounting holes 4043 of the two flanges 404 are opposite in position, so that the stud components 4044 longitudinally penetrate through the mounting holes 4043 opposite in position in the two flanges 404, thereby realizing the connection of the two flanges 404. The annular gasket 407 with the outer diameter smaller than that of the flange plates 404 is arranged between the two oppositely arranged flange plates 404, and the through hole of the annular gasket 407 is the same as the medium flow through hole 4041 of the flange plates 404 in size so as to avoid the oppositely arranged mounting holes 4043 in the two flange plates 404, so that the stud components 4044 do not penetrate through the oppositely arranged mounting holes 4043 in the two flange plates 404 longitudinally to realize the connection of the two oppositely arranged flange plates 404.

Further, the coil pipe connecting seat 401 penetrates through the bottom of the outer cylinder 10, and one end of the coil pipe connecting seat 401, which extends into the outer cylinder 10, forms a blocking portion 4011 which extends in the direction of the longitudinal axis far away from the coil pipe connecting seat 401 and is attached to the inner wall surface of the bottom of the outer cylinder (specifically, the bottom cover 105 of the outer cylinder), so that the coil pipe connecting seat 401 is fixed by the matching of the inner wall surface of the bottom of the outer cylinder and the blocking portion 4011. The other end of the coil pipe socket 401 extending from the outer cylinder 10 is sleeved with a stopper 4012 abutting against the outer wall surface of the bottom of the outer cylinder. The limiting member 4012 is configured as a lock nut, and at least a side wall surface of the coil pipe joint block 401 exposed outside the bottom of the outer cylinder (specifically, the bottom cover 105 of the outer cylinder) is configured as a threaded wall surface to be in threaded connection with the lock nut, so as to facilitate quick assembly and disassembly of the coil pipe joint block 401.

The outer wall that inlays in coil pipe connection seat 401 in urceolus bottom (specifically be the bottom 105 of urceolus) forms the ring channel 4013 that is used for arranging first sealing washer 4014, has arranged second sealing washer 4015 between coil pipe connection seat 401's outer wall and the stopper 4011 to through the setting of first sealing washer 4014, second sealing washer 4015, improve coil pipe connection seat 401 and to the sealed effect of urceolus 10. The bottom cover 105 of the outer cylinder is penetrated by a threaded pipe 501, the end of the threaded pipe 501 is sleeved with a ball valve 502, and the end of the ball valve 502 is embedded with a plug screw 503 so as to facilitate the discharge of the heat exchange medium in the outer cylinder 10 through the ball valve 502.

The connecting member 406 is configured as a connecting nut, and the end of the union 402 is embedded in the connecting nut to be screwed with the inner wall surface of the connecting nut, and the tip of the welded pipe 403 is embedded in the connecting nut. The end face of the coupling nut is formed with an annular retaining portion 4061 having an inner diameter matched to the size of the transverse end face of the welded tube 403, and the transverse end face of the welded tube 403 is formed with an annular extension 4031 extending in a direction away from the longitudinal axis of the welded tube 403 to fit the annular retaining portion 4061, so as to facilitate the fixed mounting of the connector 406 to the welded tube 403 by the cooperation of the annular retaining portion 4061 and the annular extension 4031.

It should be noted that the interface component of the present embodiment may also be used for the flowing medium inlet end 301 of the coil 30, and specific schemes or contents may refer to the schemes of the interface component described in the above embodiments, which are not described in detail herein.

Of course, the flowing medium inlet end 301 of the coil 30 of this embodiment may be fitted with another interface mounting assembly, as shown in FIG. 1, comprising: the welding joint 601 is partially sleeved on the flowing medium inlet end 301, the end of the welding joint 601 is connected with two oppositely arranged flowing medium outlet flanges 602, a gasket 603 with the outer diameter smaller than that of the flowing medium outlet flange 602 is clamped between the two flowing medium outlet flanges 602 to avoid the mounting hole 6021 assembled on the ring surface of the flowing medium outlet flange 602, so that the stud assembly 604 can penetrate through the mounting hole 6021 formed on the ring surface of the two flowing medium outlet flanges 602 to realize the fixed connection of the two flowing medium outlet flanges 602.

The refrigerant outlet 102 of the top cover 103 is connected with an elbow pipe 701, the tail end of the elbow pipe 701 is connected with two refrigerant outlet flanges 702, and a gasket 703 with the outer diameter smaller than that of the refrigerant outlet flanges 702 is clamped between the two refrigerant outlet flanges 702 to avoid a mounting hole 7021 assembled on the ring surface of the refrigerant outlet flanges 702, so that the stud assembly 704 can conveniently penetrate through the mounting hole 7021 formed on the ring surface of the two refrigerant outlet flanges 702, and the two refrigerant outlet flanges 702 are fixedly connected.

Wherein, a heat exchanger flange 1031 is arranged below the top cover 103, and the heat exchanger flange 1031 is sleeved on the tail end of the outer cylinder 10. The top cover 103 is formed with a plurality of mounting holes 1032 along the outer circumference thereof, and a plurality of mounting holes 1033 corresponding to the plurality of mounting holes 1032 of the top cover 103 are formed on the ring surface of the heat exchanger flange 1031, so that the top cover 103 and the heat exchanger flange 1031 can be connected by longitudinally and sequentially penetrating the mounting holes 1032 and the mounting holes 1033 corresponding to the mounting holes 1032 through the stud assemblies 1034. Wherein an annular gasket 1035 is arranged between the top cover 103 and the heat exchanger flange 1031 to improve the sealing of the top cover 103 to the outer cylinder 10.

In addition, a short pipe 801 can be connected to the refrigerant inlet 101, the end of the short pipe 801 is connected to two refrigerant inlet flanges 802, and a gasket 803 with the outer diameter smaller than that of the refrigerant inlet flanges 802 is clamped between the two refrigerant inlet flanges 802 to avoid a mounting hole 8021 assembled on the ring surface of the refrigerant inlet flanges 802, so that the stud assembly 804 can conveniently penetrate through the mounting hole 8021 formed on the ring surface of the two refrigerant inlet flanges 802, and the two refrigerant inlet flanges 802 can be fixedly connected. The outer wall of the outer tub 10 is fitted with a mounting bracket 90 to facilitate the mounting of the heat exchanging apparatus by the mounting bracket 90.

It should be noted that the "heat exchange medium" in the present embodiment may be a cooling medium such as "water", and the corresponding flowing medium in the coil 30 is configured as a flowing medium with a relatively high temperature, such as "hot oil". For the same purpose of heat exchange, the "heat exchange medium" may be configured as a flowing medium with a higher temperature, such as "hot oil", and the corresponding flowing medium in the coil 30 is configured as a cooling medium, such as "water". Thus, the heat exchange device according to any of the above embodiments achieves the purpose of efficiently exchanging heat between the heat exchange medium in the outer cylinder 10 and the flowing medium flowing through the coil 30.

The above list of details is only for the practical implementation of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the technical spirit of the present invention should be included in the scope of the present invention.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (10)

1. An interface assembly, comprising:

the coil pipe connecting seat is embedded in the outer cylinder and used for the coil pipe to penetrate through;

the movable joint is partially sleeved at the inlet and outlet ends of the flowing medium of the coil pipe, the tail end of the movable joint is connected with a welding pipe, the tail end of the welding pipe is connected with two oppositely arranged flange plates, and a short pipe used for being connected with the tail end of the welding pipe is embedded in the flange plate close to the tail end of the welding pipe; and the number of the first and second groups,

and the connecting piece is sleeved at the tail end of the movable joint and is used for embedding the welding pipe therein so as to connect the movable joint and the welding pipe.

2. The interface assembly of claim 1,

the flange plate is provided with a medium circulation hole, and a longitudinal annular bulge part for embedding the short pipe is formed on one side, facing the short pipe, of the flange plate close to the tail end of the welding pipe along the edge of the medium circulation hole.

3. The interface assembly of claim 2,

and an annular gasket with the outer diameter smaller than that of the flange plate is arranged between the two oppositely arranged flange plates, and the size of a through hole of the annular gasket is the same as that of a medium flow through hole of the flange plate.

4. The interface assembly of claim 2,

a plurality of mounting holes are formed in the ring surface of the flange plates, and the mounting holes of the two flange plates are opposite in position so that the stud assembly can longitudinally penetrate through the mounting holes in the two flange plates, wherein the mounting holes are opposite in position.

5. Interface assembly according to any one of claims 1-4,

the coil pipe joint chair runs through the bottom of urceolus, just the coil pipe joint chair stretches into to one end in the urceolus forms to keeping away from the stop part that the longitudinal axis direction of coil pipe joint chair extended and laminated with the internal face of urceolus bottom, the coil pipe joint chair is followed another pot head that the urceolus stretches out is equipped with the locating part with the outer wall butt of urceolus bottom.

6. The interface assembly of claim 5,

the limiting part is configured as a lock nut, and at least the side wall surface of the coil pipe connecting seat exposed outside the bottom of the outer cylinder is configured as a thread wall surface.

7. The interface assembly of claim 5,

the coil pipe adapter is embedded in the outer wall of the bottom of the outer barrel to form an annular groove for arranging a first sealing ring, and a second sealing ring is arranged between the outer wall of the coil pipe adapter and the blocking part.

8. Interface assembly according to any one of claims 1-4,

the connecting piece is configured to be a connecting nut, the tail end of the movable joint is embedded in the connecting nut to be in threaded connection with the inner wall surface of the connecting nut, and the top end of the welding pipe is embedded in the connecting nut.

9. The interface assembly of claim 8,

the tail end face of the connecting nut is provided with an annular limiting portion, the inner diameter of the annular limiting portion is matched with the size of the transverse end face of the welding pipe, and an annular extending portion which extends in the direction away from the longitudinal axis direction and is attached to the annular limiting portion is formed on the transverse end face of the welding pipe.

10. Interface assembly according to any one of claims 1-4,

a threaded pipe penetrates through the bottom of the outer barrel, and a ball valve with a plug screw embedded at the tail end is sleeved at the tail end of the threaded pipe.

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