CN112682588B

CN112682588B - Air conditioner hose and preparation method thereof

Info

Publication number: CN112682588B
Application number: CN202011603011.0A
Authority: CN
Inventors: 文琦超; 文勇; 李兵; 文杰; 孙武建; 邱锋
Original assignee: SICHUAN CHUANHUAN TECHNOLOGY CO LTD
Current assignee: SICHUAN CHUANHUAN TECHNOLOGY CO LTD
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2022-11-01
Anticipated expiration: 2040-12-29
Also published as: CN112682588A

Abstract

The invention relates to the field of air conditioner accessories and discloses an air conditioner hose which comprises a hose body, wherein the hose body comprises a first rubber layer, a wire clamping layer, a second rubber layer and a corrugated pipe layer which are sequentially and tightly sleeved from outside to inside. The high-flexibility low-permeability high-temperature-resistance carbon dioxide refrigerant has high flexibility, low permeability and high temperature resistance, can be well adapted to carbon dioxide refrigerants, has good compression-resistant and explosion-proof performance, and is safe and environment-friendly. A preparation method of an air-conditioning hose can prepare the air-conditioning hose matched with a carbon dioxide refrigerant.

Description

Air conditioner hose and preparation method thereof

Technical Field

The invention relates to the field of air conditioner accessories, in particular to an air conditioner hose and a preparation method thereof.

Background

The carbon dioxide has good thermal performance and environmental protection characteristic, so when the carbon dioxide is used for preparing air-conditioning refrigerant, and HFCs (high frequency refrigerant) with R134a inside and a mixture thereof are replaced by the environment-friendly carbon dioxide refrigerant R744 for refrigeration, the refrigeration performance is excellent, the permeability is extremely low, the bearable pressure is extremely high, and the zero emission is close. However, the existing air-conditioning hose cannot be well matched with the performance of the refrigerant, so that the air-conditioning hose with high flexibility, low permeability, high temperature resistance and pressure resistance and explosion resistance needs to be invented.

The present application is made in view of this.

Summary of the invention

The invention aims to provide an air conditioner hose which has high flexibility, low permeability and high temperature resistance, can be well adapted to carbon dioxide refrigerants, has good compression resistance and explosion resistance, and is safe and environment-friendly.

Another object of the present invention is to provide a method for manufacturing an air conditioning hose, which can manufacture an air conditioning hose adapted to a carbon dioxide refrigerant.

The embodiment of the application is realized by the following technical scheme:

the utility model provides an air conditioner hose, includes the body, and the body includes from outer to interior first rubber layer, thread clamping layer, second rubber layer and the bellows layer of establishing of strict cover in proper order.

Furthermore, the first rubber layer and the second rubber layer are extruded and formed, and adhesives are coated on two sides of the wire clamping layer.

Furthermore, the preparation raw materials of the first rubber layer and the second rubber layer comprise ethylene propylene rubber and an auxiliary agent, wherein the auxiliary agent comprises an anti-aging agent, a vulcanizing agent, a vulcanization accelerator, a plasticizer and a reinforcing agent.

Furthermore, the preparation raw materials of the yarn clamping layer comprise vinylon fibers and aramid fibers, and the diameters of the vinylon fibers and the aramid fibers are 1460-1510D.

Further, the body tip is equipped with the joint, connects and is equipped with coaxial coupling's a section of thick bamboo and main part of inserting, and the main part is opened has the inner chamber and with insert a section of thick bamboo intercommunication, and the main part external diameter is greater than and inserts a section of thick bamboo external diameter, the main part has connect sealed section of thick bamboo outward soon, and sealed section of thick bamboo is close to the one end of inserting a section of thick bamboo and even has the sealing ring, and the sealing ring internal diameter matches with the body external diameter, insert a section of thick bamboo and body tip inner wall interference grafting, body tip outer wall outwards extends and forms sealed edge, and sealed edge clamp is located between sealing ring and the main part.

Further, insert a section of thick bamboo outer wall and be equipped with a plurality of snap rings, establish to the conical surface one side that the main part was kept away from to the snap ring, establish to the plane one side that is close to the main part, body tip inner wall is opened has the draw-in groove that corresponds one-to-one and mate with a plurality of snap rings.

Furthermore, a plurality of sealing ring grooves are coaxially formed in one side, close to the sealing ring, of the sealing edge, and sealing inserting rings which correspond to the sealing ring grooves in a one-to-one mode and are matched with the sealing ring grooves are arranged on one side, close to the sealing edge, of the sealing ring in a protruding mode.

Further, the outer wall that the one end of inserting a section of thick bamboo was kept away from to the sealing cylinder outwards extends and forms spacing edge, and the sealing cylinder overcoat is equipped with a fixed cylinder, and the one end that the fixed cylinder is close to inserting a section of thick bamboo even has the spacing ring, and the spacing ring internal diameter matches with the sealing cylinder external diameter, seted up the locking annular in the fixed cylinder, the fixed disk is endotheca equipped with to the fixed cylinder, and fixed disk week side is equipped with a plurality of fixed pins along radially, and the fixed pin passes through reset spring and fixed disk sliding connection, and the fixed pin matches with the locking annular, and is a plurality of when the fixed pin all is located the locking annular, the one end that the section of thick bamboo was kept away from to the fixed disk and main part is supported tightly, spacing ring and spacing edge support tightly.

Further, the coaxial explosion-proof stopper that is equipped with of main part inner chamber, the explosion-proof stopper is close to the one end of inserting the section of thick bamboo and establishes to the conical surface, and can with insert the inside interference grafting of section of thick bamboo, the explosion-proof stopper keeps away from the concave groove that blocks that is equipped with the cambered surface of terminal surface of inserting the section of thick bamboo, and the explosion-proof stopper lateral wall evenly links along radial a plurality of bracing pieces, and a plurality of bracing pieces all with the contact of main part inner chamber wall, main part inner chamber sliding sleeve is equipped with the support ring, support ring one side and a plurality of bracing piece contact, and the opposite side is close to one side of inserting the section of thick bamboo through a plurality of hydraulic stem and main part and is connected, closely press from both sides between explosion-proof stopper and the fixed disk and be equipped with the passageway dish, the passageway dish is established with main part inner chamber wall sealing sleeve, and is opened and is equipped with a plurality of material passing holes, fixed disk middle part fretwork is equipped with the filter screen.

A preparation method of an air conditioner hose comprises the following steps: batching rubber, extruding a second rubber layer, weaving a wire clamping layer outside the second rubber layer, storing at constant temperature, drawing out a mold core, stripping and vulcanizing, penetrating a corrugated pipe layer in the second rubber layer, extruding a first rubber layer outside the wire clamping layer, cutting, detecting and detecting air tightness.

The air conditioner hose provided by the invention has the beneficial effects that:

(1) Through setting up the bellows layer as the inlayer, the hyposmosis and the high compliance and the ductility of body have been guaranteed, through setting up the cord clamping layer, the resistance to compression explosion-proof ability of body has been guaranteed, the circumference and the axial tensile strength of body have effectively been promoted, effectively prevent the body fracture, through setting up first rubber layer and second rubber layer, compromise pliability and the compressive strength that has promoted the body on the one hand, on the other hand can effectively promote the temperature resistance of body, guaranteed that the body can use at-40-165 ℃, and can deal with the temperature sudden change in the service temperature range.

(2) Through setting up the joint, be convenient for the body and external environment are connected, specifically, through setting up the section of thick bamboo of inserting on connecting, make the section of thick bamboo of inserting and body tip inner wall interference grafting, seal the junction from the body is inside, further through setting up the main part, make the main part with insert a coaxial coupling, and the external diameter that sets up the main part is greater than the section of thick bamboo external diameter of inserting, form the annular platform that is used for pressing from both sides tightly at the main part and the section of thick bamboo junction of inserting, connect sealed section of thick bamboo soon outside the main part after that, set up the sealing ring on sealed section of thick bamboo, make the sealing ring can be close to annular platform through connect soon, and set up sealed edge at the body tip, make sealed edge clamp locate between sealing ring and the annular platform, further take-up the body with the joint from the outside on the one hand, with insert section of thick bamboo fit inside and outside, make body and joint fastening connection, on the other hand because the body is soft, the sealing ring is the stereoplasm, adopt the mode of soft or hard contact can effectively promote the gas tightness of clamping department.

(3) Through setting up the snap ring inserting a section of thick bamboo outer wall, one side that makes the snap ring keep away from the main part is the conical surface, and the opposite side is the plane to set up the draw-in groove in the body, when inserting a section of thick bamboo and inserting in the body, the conical surface can make the snap ring insert smoothly, when the snap ring card goes into the draw-in groove, the plane can prevent effectively that the snap ring from following the roll-off in the draw-in groove, and then prevents effectively that an inserted section of thick bamboo from extracting in the body, on the other hand, the cooperation of snap ring and draw-in groove can further promote the body and insert the gas tightness between the section of thick bamboo.

(4) Through setting up a plurality of seal ring grooves and sealed inserting the ring, utilize grafting of both with sealed along with the plane contact cooperation optimization between the sealing ring for corrugated surface contact cooperation, further promote the gas tightness between the two.

(5) Through setting up the fixed cylinder, set up the spacing ring on the fixed cylinder, set up spacing edge on the sealed cylinder, utilize the spacing ring to compress tightly spacing edge, thereby it is spacing to carry out the axial to the sealed cylinder, furthermore, through setting up locking annular groove and fixed disk, set up the fixed pin on the fixed disk, it makes fixed disk and main part support tightly to utilize pegging graft of fixed pin and locking annular groove, thereby make spacing ring and spacing edge support tightly, thereby it is spacing to carry out the axial to the sealed cylinder, prevent effectively that it from taking place the derotation, guarantee then that sealed edge supports tightly with the sealing ring, guarantee to insert a section of thick bamboo and body and insert tightly, thereby holistic structural stability has been promoted. Through setting up fixed pin and fixed disk through reset spring sliding fit to set up the push rod at the fixed pin lateral wall, promote the push rod and can make the fixed pin return in the fixed disk, thereby make things convenient for the fixed disk to take out from the solid fixed cylinder.

(6) Through setting up the anti-explosion plug, make its one end that is close to the section of thick bamboo of inserting be the conical surface, and set up a plurality of bracing pieces and make anti-explosion plug and main part inner chamber sliding fit, make the anti-explosion plug can be close to and the interference inserts in the section of thick bamboo of inserting, and set up support ring and a plurality of hydraulic stem counterwork anti-explosion plug, prevent it and insert a section of thick bamboo grafting easily, when the pressure of the refrigerant that lets in maintains in normal working range, the refrigerant is followed the clearance between a plurality of bracing pieces and is gone into the main part inner chamber, further let in the body through inserting a section of thick bamboo, when the refrigerant pressure that lets in is too big, it strikes the anti-explosion plug, make the anti-explosion plug counterwork hydraulic stem be close to and insert in the section of thick bamboo, it is stifled the body to burst to insert a section of thick bamboo, thereby effectively prevent that too big refrigerant of pressure from letting in the body and bursting. The explosion-proof plug is provided with the blocking groove with the cambered surface, which is concavely arranged on the end surface of the explosion-proof plug, which is far away from the insertion cylinder, so that the refrigerant can push the explosion-proof plug conveniently.

(7) Through setting up the passageway matter dish to set up a plurality of mistake matter holes on the passageway matter dish, reduce the sectional area, promote the velocity of flow and the hydraulic pressure of refrigerant, through installing the mass filtering net in the middle part of the fixed disk, carry out prefiltering to the refrigerant that lets in, prevent that impurity from causing the influence to joint and body.

The invention provides a preparation method of an air-conditioning hose, which can prepare the air-conditioning hose adaptive to the carbon dioxide refrigerant.

Drawings

To more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.

Fig. 1 is a schematic half-sectional view of an air conditioning hose according to an embodiment of the present invention;

fig. 2 is a half-sectional view schematically illustrating a joint of an air conditioning hose according to an embodiment of the present invention.

Icon: 10-a first rubber layer; 11-a wire clamping layer; 12-a second rubber layer; 121-card slot; 13-a corrugated tube layer; 14-sealing edge; 141-a seal ring groove; 20-inserting a cylinder; 201-a snap ring; 21-a body; 22-a sealed cylinder; 221-limit edge; 23-a sealing ring; 231-sealing insert ring; 24-a stationary cartridge; 241-a spacing ring; 242-locking ring groove; 25-fixing the disc; 251-a fixed pin; 252-a return spring; 253-mass filter; 30-a blast-proof plug; 301-blocking the groove; 31-a support bar; 32-support ring; 33-hydraulic rods; 34-a flux disk; 341-chromatography pores.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, as presented in the figures, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the product of the application is used, the description is only for convenience and simplicity, and the indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation and be operated, and thus, should not be construed as limiting the present application.

In the description of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Examples

Referring to fig. 1 and 2, the present embodiment provides an air conditioning hose, which includes a hose body, and the hose body includes a first rubber layer 10, a wire clamping layer 11, a second rubber layer 12, and a bellows layer 13, which are tightly sleeved from outside to inside in sequence. Through setting up bellows layer 13 as the inlayer, the hyposmosis and the high compliance and the ductility of body have been guaranteed, through setting up cord layer 11, the resistance to compression explosion-proof ability of body has been guaranteed, the circumference and the axial tensile strength of body have effectively been promoted, effectively prevent the body fracture, through setting up first rubber layer 10 and second rubber layer 12, compromise pliability and the compressive property that has promoted the body on the one hand, on the other hand can effectively promote the temperature resistance of body, guaranteed that the body can use at-40-165 ℃, and can deal with the temperature sudden change in the service temperature range.

The corrugated pipe layer 13 is a stainless steel metal corrugated pipe, and the thickness of the pipe wall is 1mm.

Specifically, in order to improve the temperature resistance and the integrity of the pipe body, the first rubber layer 10 and the second rubber layer 12 are extruded, and adhesives are coated on two sides of the wire clamping layer 11. The raw materials for preparing the first rubber layer 10 and the second rubber layer 12 comprise ethylene propylene rubber and auxiliaries, wherein the auxiliaries comprise an anti-aging agent, a vulcanizing agent, a vulcanization accelerator, a plasticizer and a reinforcing agent.

Further, the preparation raw materials of the yarn-clamping layer 11 comprise vinylon fibers and aramid fibers, and the diameters of the vinylon fibers and the aramid fibers are 1460-1510D.

In order to facilitate the connection of the pipe body and the external environment and ensure the air tightness of the connection, the end part of the pipe body is provided with a joint, the joint is provided with an inserting cylinder 20 and a main body 21 which are coaxially connected, the main body 21 is also cylindrical, the main body 21 is provided with an inner cavity, the inner cavity is communicated with the inside of the inserting cylinder 20, the outer diameter of the main body 21 is larger than the outer diameter of the inserting cylinder 20, the main body 21 is externally and spirally connected with a sealing cylinder 22, one end, close to the inserting cylinder 20, of the sealing cylinder 22 is connected with a sealing ring 23, the inner diameter of the sealing ring 23 is matched with the outer diameter of the pipe body, the inserting cylinder 20 is in interference insertion connection with the inner wall of the end part of the pipe body, the outer wall of the end part of the pipe body extends outwards to form a sealing edge 14, and the sealing edge 14 is clamped between the sealing ring 23 and the main body 21. Through setting up the joint, be convenient for the body and external environment to be connected, specifically, through setting up the section of thick bamboo 20 on connecting, make section of thick bamboo 20 and the interference of body tip inner wall peg graft, seal the junction from the body inside, further through setting up main part 21, make main part 21 and section of thick bamboo 20 coaxial coupling, and the external diameter that sets up main part 21 is greater than the section of thick bamboo 20 external diameter of inserting, form the ring-shaped platform that is used for pressing from both sides at main part 21 and section of thick bamboo 20 junction, connect sealed section of thick bamboo 22 soon outside main part 21, set up sealing ring 23 on sealed section of thick bamboo 22, make sealing ring 23 be close to ring-shaped platform through screwing in, and set up sealed along 14 at the body tip, make sealed along 14 locate between sealing ring 23 and the ring-shaped platform, on the one hand further take up the body and connect from the outside, with section of thick bamboo 20 inside and outside cooperation, make the body and joint fastening connection, on the other hand because the body is soft, sealing ring 23 is the stereoplasm, adopt the mode of soft and hard clamp can effectively promote the gas tightness of the tight department of pressing from both sides.

In order to further improve the insertion performance of the insertion tube 20 and the tube body, the outer wall of the insertion tube 20 is provided with a plurality of clamping rings 201, one side of each clamping ring 201, which is far away from the main body 21, is provided with a conical surface, one side of each clamping ring 201, which is close to the main body 21, is provided with a plane, and the inner wall of the end part of the tube body is provided with clamping grooves 121 which correspond to and are matched with the clamping rings 201 one by one. Through set up snap ring 201 at a section of thick bamboo 20 outer wall of inserting, one side that makes snap ring 201 keep away from main part 21 is the conical surface, the opposite side is the plane, and set up draw-in groove 121 in the body, when a section of thick bamboo 20 inserts in the body, the conical surface can make snap ring 201 insert smoothly, when snap ring 201 card goes into draw-in groove 121, the plane can effectively prevent that snap ring 201 from sliding out in draw-in groove 121, and then effectively prevent to insert a section of thick bamboo 20 and extract from the body, on the other hand, the cooperation of snap ring 201 and draw-in groove 121 can further promote the body and insert the gas tightness between a section of thick bamboo 20.

In order to further improve the air tightness between the sealing edge 14 and the sealing ring 23, a plurality of sealing ring grooves 141 are coaxially formed on one side of the sealing edge 14 close to the sealing ring 23 by taking the axis of the pipe body as an axis, and sealing insert rings 231 which are in one-to-one correspondence with the plurality of sealing ring grooves 141 and are matched with one another are arranged on one side of the sealing ring 23 close to the sealing edge 14 in a protruding mode. By arranging the plurality of sealing ring grooves 141 and the sealing insert ring 231, the plane contact fit between the sealing edge 14 and the sealing ring 23 is optimized to be the corrugated surface contact fit by the insertion of the sealing ring grooves 141 and the sealing insert ring 231, and the air tightness between the sealing ring grooves and the sealing edge is further improved.

In order to improve the structural stability of the joint and prevent the sealing ring 23 from being incapable of tightly squeezing the sealing edge 14 due to the reverse rotation in the use process of the sealing barrel 22, the air tightness is reduced, the outer wall of one end, away from the insertion barrel 20, of the sealing barrel 22 extends outwards to form a limiting edge 221, the sealing barrel 22 is externally sleeved with a fixing barrel 24, one end, close to the insertion barrel 20, of the fixing barrel 24 is connected with a limiting ring 241, the inner diameter of the limiting ring 241 is matched with the outer diameter of the sealing barrel 22, a locking ring groove 242 is formed in the fixing barrel 24, a fixing disk 25 is sleeved in the fixing barrel 24, a plurality of fixing pins 251 are arranged on the periphery of the fixing disk 25 along the radial direction, the fixing pins 251 are in sliding connection with the fixing disk 25 through reset springs 252, the fixing pins 251 are connected with push rods, the push rods vertically extend out of the surface of the fixing disk 25 and are in sliding fit with the fixing disk 25, and the fixing pins 251 can be retracted through the push rods, so that the fixing disk 25 can be conveniently taken out. The fixing pins 251 are matched with the locking ring groove 242, when the fixing pins 251 are all located in the locking ring groove 242, the fixing disk 25 is tightly abutted to one end of the main body 21 far away from the plug-in barrel 20, and the limiting ring 241 is tightly abutted to the limiting edge 221. Through setting up the fixed cylinder 24, set up spacing ring 241 on the fixed cylinder 24, set up spacing edge 221 on the sealed cylinder 22, utilize spacing ring 241 to compress tightly spacing edge 221, thereby it is spacing to carry out the axial to the sealed cylinder 22, furthermore, through setting up locking ring groove 242 and fixed disk 25, set up fixed pin 251 on the fixed disk 25, it makes fixed disk 25 and main part 21 support tightly to utilize the grafting of fixed pin 251 and locking ring groove 242, thereby make spacing ring 241 and spacing edge 221 support tightly, thereby it is spacing to carry out the axial to the sealed cylinder 22, effectively prevent it from taking place the derotation, then guarantee to seal along 14 and sealing ring 23 support tightly, guarantee to insert a section of thick bamboo 20 and insert tightly with the body, thereby holistic structural stability has been promoted. The fixing pin 251 is slidably engaged with the fixing disc 25 through the return spring 252, and the push rod is disposed on the side wall of the fixing pin 251, so that the fixing pin 251 can be retracted into the fixing disc 25 by pushing the push rod, thereby facilitating the taking out of the fixing disc 25 from the fixing cylinder 24.

In order to prevent the pipe body from bursting due to overlarge pressure of a refrigerant which rushes into the pipe body in the using process, an inner cavity of the main body 21 is coaxially provided with an anti-explosion plug 30, one end, close to the insertion tube 20, of the anti-explosion plug 30 is set to be a conical surface and can be inserted into the insertion tube 20 in an interference manner, the end surface, far away from the insertion tube 20, of the anti-explosion plug 30 is concavely provided with a blocking groove 301 with a cambered surface, the side wall of the anti-explosion plug 30 is uniformly connected with a plurality of supporting rods 31 along the radial direction, the plurality of supporting rods 31 are in contact with the inner cavity wall of the main body 21, the inner cavity of the main body 21 is slidably sleeved with a supporting ring 32, one side of the supporting ring 32 is in contact with the plurality of supporting rods 31, the other side of the anti-explosion plug 30 is connected with one side, close to the insertion tube 20, through a plurality of hydraulic rods 33, an electrolyte disk 34 is tightly clamped between the anti-explosion plug 30 and a fixed disk 25, the electrolyte disk 34 is hermetically sleeved with the inner cavity wall of the main body 21, the electrolyte disk 34 is provided with a plurality of electrolyte holes 341, and the fixed disk 25 is hollowed out in the middle part of the fixed disk 25 and is provided with a filter screen 253. The anti-explosion plug 30 is arranged, one end of the anti-explosion plug 30, which is close to the insertion barrel 20, is a conical surface, the support rods 31 are arranged, the anti-explosion plug 30 is in sliding fit with the inner cavity of the main body 21, the anti-explosion plug 30 can be close to and inserted into the insertion barrel 20 in an interference mode, the support ring 32 and the hydraulic rods 33 are arranged to resist the anti-explosion plug 30 and prevent the anti-explosion plug from being easily inserted into the insertion barrel 20, when the pressure of introduced refrigerant is maintained in a normal working range, the refrigerant flows into the inner cavity of the main body 21 from gaps among the support rods 31 and further flows into the pipe body through the insertion barrel 20, when the pressure of the introduced refrigerant is too high, the anti-explosion plug 30 impacts the anti-explosion plug 30 to resist the hydraulic rods 33 and is inserted into the insertion barrel 20 to block the insertion barrel 20, and therefore, the pipe body is effectively prevented from bursting caused by the fact that the refrigerant with too high pressure flows into the pipe body. Keep away from the concave groove 301 that hinders that is equipped with the cambered surface of the terminal surface of inserting a section of thick bamboo 20 through setting up explosion-proof plug 30, the refrigerant of being convenient for promotes explosion-proof plug 30, through setting up through matter dish 34 to set up a plurality of passing through matter holes 341 on through matter dish 34, reduce the sectional area, promote the velocity of flow and the hydraulic pressure of refrigerant, through installing at fixed disk 25 middle part and strain matter net 253, prefilter the refrigerant that lets in, prevent that impurity from causing the influence to joint and body.

The embodiment also provides a preparation method of the air conditioner hose, which comprises the following steps: mixing materials, extruding a second rubber layer 12, weaving a wire clamping layer 11 outside the second rubber layer 12, storing at constant temperature, extracting a mold core, stripping, vulcanizing, penetrating a corrugated pipe layer 13 into the second rubber layer 12, extruding a first rubber layer 10 outside the wire clamping layer 11, cutting, detecting and carrying out airtight detection. The method can prepare the air-conditioning hose adaptive to the carbon dioxide refrigerant.

In summary, the invention provides an air-conditioning hose, which has the advantages that the corrugated pipe layer is arranged as the inner layer, so that the low permeability, high flexibility and ductility of the hose body are ensured, the compression-resistant and explosion-proof performance of the hose body is ensured by arranging the wire clamping layer, the tensile performance in the circumferential direction and the axial direction of the hose body is effectively improved, and the hose body is effectively prevented from cracking, and the first rubber layer and the second rubber layer are arranged, so that the flexibility and the compression-resistant performance of the hose body are improved, the temperature-resistant performance of the hose body can be effectively improved, the hose body can be used at-40-165 ℃, and the temperature sudden change in the use temperature range can be coped with. Through setting up the joint, be convenient for the body and external environment are connected, specifically, through setting up the section of thick bamboo of inserting on connecting, make the section of thick bamboo of inserting and body tip inner wall interference grafting, seal the junction from the body is inside, further through setting up the main part, make the main part with insert a coaxial coupling, and the external diameter that sets up the main part is greater than the section of thick bamboo external diameter of inserting, form the annular platform that is used for pressing from both sides tightly at the main part and the section of thick bamboo junction of inserting, connect sealed section of thick bamboo soon outside the main part after that, set up the sealing ring on sealed section of thick bamboo, make the sealing ring can be close to annular platform through connect soon, and set up sealed edge at the body tip, make sealed edge clamp locate between sealing ring and the annular platform, further take-up the body with the joint from the outside on the one hand, with insert section of thick bamboo fit inside and outside, make body and joint fastening connection, on the other hand because the body is soft, the sealing ring is the stereoplasm, adopt the mode of soft or hard contact can effectively promote the gas tightness of clamping department. Through setting up the snap ring inserting a section of thick bamboo outer wall, one side that makes the snap ring keep away from the main part is the conical surface, and the opposite side is the plane to set up the draw-in groove in the body, when inserting a section of thick bamboo and insert in the body, the conical surface can make the snap ring insert smoothly, when the snap ring card goes into the draw-in groove, the plane can prevent effectively that the snap ring from following the roll-off in the draw-in groove, and then effectively prevents to insert a section of thick bamboo and extract in following the body, on the other hand, the cooperation of snap ring and draw-in groove can further promote the body and insert the gas tightness between the section of thick bamboo. Through setting up a plurality of seal ring grooves and sealed insert the ring, utilize grafting of the two with sealed along with the plane contact cooperation optimization between the sealing ring for corrugated surface contact cooperation, further promote the gas tightness between the two. Through setting up the fixed cylinder, set up the spacing ring on the fixed cylinder, set up spacing edge on the sealed cylinder, utilize the spacing ring to compress tightly spacing edge, thereby it is spacing to carry out the axial to the sealed cylinder, furthermore, through setting up locking annular groove and fixed disk, set up the fixed pin on the fixed disk, it makes fixed disk and main part support tightly to utilize pegging graft of fixed pin and locking annular groove, thereby make spacing ring and spacing edge support tightly, thereby it is spacing to carry out the axial to the sealed cylinder, prevent effectively that it from taking place the derotation, guarantee then that sealed edge supports tightly with the sealing ring, guarantee to insert a section of thick bamboo and body and insert tightly, thereby holistic structural stability has been promoted. Through setting up the fixed pin and passing through reset spring sliding fit with the fixed disk to set up the push rod at the fixed pin lateral wall, promote the push rod and can make the fixed pin return in the fixed disk, thereby make things convenient for the fixed disk to take out from the solid fixed cylinder. Through setting up the anti-explosion plug, make its one end that is close to the section of thick bamboo of inserting be the conical surface, and set up a plurality of bracing pieces and make anti-explosion plug and main part inner chamber sliding fit, make the anti-explosion plug can be close to and interference insertion insert in the section of thick bamboo, and set up support ring and a plurality of hydraulic stem and confront the anti-explosion plug, prevent it from pegging graft with the section of thick bamboo of inserting easily, when the pressure of the refrigerant that lets in maintains in normal operating range, the refrigerant is followed the clearance between a plurality of bracing pieces and is gone into the main part inner chamber, further let in the pipe through the section of thick bamboo of inserting, when the refrigerant pressure that lets in is too big, it strikes the anti-explosion plug, make the anti-explosion plug confront the hydraulic stem and be close to and insert in the section of thick bamboo of inserting, it is stifled to the pipe body to die to insert, thereby effectively prevent that too big refrigerant of pressure from letting in the pipe body and bursting. Keep away from the concave groove that hinders that is equipped with the cambered surface of the terminal surface of inserting a section of thick bamboo through setting up the explosion-proof plug, the refrigerant of being convenient for promotes the explosion-proof plug, through setting up the expert's matter dish to set up a plurality of mistake matter holes on the expert's matter dish, reduce the sectional area, promote the velocity of flow and the hydraulic pressure of refrigerant, through installing the filter mass net at the fixed disk middle part, prefilter the refrigerant that lets in, prevent that impurity from causing the influence to joint and body. The invention also provides a preparation method of the air-conditioning hose, which can prepare the air-conditioning hose adaptive to the carbon dioxide refrigerant.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An air conditioner hose is characterized by comprising a hose body, wherein the hose body comprises a first rubber layer (10), a wire clamping layer (11), a second rubber layer (12) and a corrugated pipe layer (13) which are sequentially and tightly sleeved from outside to inside;

the end part of the pipe body is provided with a connector, the connector is provided with an inserting cylinder (20) and a main body (21) which are coaxially connected, the main body (21) is provided with an inner cavity and communicated with the inserting cylinder (20), the outer diameter of the main body (21) is larger than the outer diameter of the inserting cylinder (20), the main body (21) is externally screwed with a sealing cylinder (22), one end, close to the inserting cylinder (20), of the sealing cylinder (22) is connected with a sealing ring (23), the inner diameter of the sealing ring (23) is matched with the outer diameter of the pipe body, the inserting cylinder (20) is in interference insertion connection with the inner wall of the end part of the pipe body, the outer wall of the end part of the pipe body extends outwards to form a sealing edge (14), and the sealing edge (14) is clamped between the sealing ring (23) and the main body (21);

the outer wall that the one end of inserting section of thick bamboo (20) was kept away from in sealing barrel (22) outwards extends and forms spacing (221), and sealing barrel (22) overcoat is equipped with solid fixed cylinder (24), and solid fixed cylinder (24) are close to the one end of inserting section of thick bamboo (20) and even have spacing ring (241), and spacing ring (241) internal diameter and sealing barrel (22) external diameter phase-match, seted up in solid fixed cylinder (24) locking ring groove (242), gu fixed cylinder (24) endotheca is equipped with fixed disk (25), and fixed disk (25) week side is along radially being equipped with a plurality of fixed pins (251), and fixed pin (251) are through reset spring (252) and fixed disk (25) sliding connection, and fixed pin (251) match with locking ring groove (242), and are a plurality of when fixed pin (251) all are located locking ring groove (242), the one end that inserting section of thick bamboo (20) was kept away from in fixed disk (25) and main part (21) is supported tightly, spacing ring (241) are supported tightly along (221).

2. Air-conditioning hose according to claim 1, characterized in that the first rubber layer (10) and the second rubber layer (12) are extruded and the cord layer (11) is coated with adhesive on both sides.

3. The air-conditioning hose according to claim 1, wherein the first rubber layer (10) and the second rubber layer (12) are prepared from ethylene propylene rubber and auxiliaries, and the auxiliaries comprise an antioxidant, a vulcanizing agent, a vulcanization accelerator, a plasticizer and a reinforcing agent.

4. The air-conditioning hose according to claim 1, characterized in that the preparation raw material of the wire-clamping layer (11) comprises vinylon fibers and aramid fibers, and the diameters of the vinylon fibers and the aramid fibers are 1460-1510D.

5. The air-conditioning hose according to claim 1, wherein the outer wall of the insertion tube (20) is provided with a plurality of clamping rings (201), one side of each clamping ring (201) far away from the main body (21) is provided with a conical surface, one side of each clamping ring (201) close to the main body (21) is provided with a plane, and the inner wall of the end part of the tube body is provided with clamping grooves (121) which are in one-to-one correspondence and match with the plurality of clamping rings (201).

6. The air-conditioning hose according to claim 1, wherein a plurality of sealing ring grooves (141) are coaxially formed on one side of the sealing edge (14) close to the sealing ring (23), and sealing insert rings (231) which are in one-to-one correspondence and match with the plurality of sealing ring grooves (141) are arranged on one side of the sealing ring (23) close to the sealing edge (14) in a protruding manner.

7. The air-conditioning hose according to claim 1, characterized in that the inner cavity of the main body (21) is coaxially provided with an explosion-proof plug (30), one end of the explosion-proof plug (30) close to the insertion tube (20) is provided with a conical surface and can be inserted into the insertion tube (20) in an interference manner, the end surface of the explosion-proof plug (30) far away from the insertion tube (20) is concavely provided with a blocking groove (301) with a cambered surface, the side wall of the explosion-proof plug (30) is uniformly connected with a plurality of support rods (31) along the radial direction, the plurality of support rods (31) are all contacted with the inner cavity wall of the main body (21),

a supporting ring (32) is sleeved in the inner cavity of the main body (21) in a sliding manner, one side of the supporting ring (32) is in contact with the supporting rods (31), the other side of the supporting ring is connected with one side of the main body (21) close to the inserting cylinder (20) through a plurality of hydraulic rods (33),

the explosion-proof plug is equipped with through matter dish (34) between (30) and fixed disk (25) closely press from both sides, and through matter dish (34) and main part (21) inner chamber wall seal cover establish, through matter dish (34) open have a plurality of through-mass holes (341), fixed disk (25) middle part fretwork is equipped with and filters matter net (253).

8. A method for preparing an air conditioning hose according to any one of claims 1 to 7, comprising the steps of: batching, extruding a second rubber layer (12), weaving a wire clamping layer (11) outside the second rubber layer (12), storing at constant temperature, extracting a mold core, stripping and vulcanizing, penetrating a corrugated pipe layer (13) in the second rubber layer (12), extruding a first rubber layer (10) outside the wire clamping layer (11), cutting, detecting and carrying out airtight detection.