CN214579553U - Connecting joint capable of discharging high-pressure fluid - Google Patents

Abstract

The utility model discloses a can arrange high-pressure fluid's coupling joint, it includes a joint body, a drainage body and a drainage subassembly, wherein the joint body has a first connecting port and a second connecting port, define a communicating chamber between first connecting port and the second connecting port, wherein the drainage body forms a drainage channel and a drainage port, drainage channel is connected in drainage port and the communicating chamber, wherein the drainage subassembly is movably arranged in drainage channel, and the drainage subassembly is sealed in the drainage port by can deblocking, when the drainage port is sealed by the drainage subassembly, but the coupling joint of the high-pressure fluid of can arranging is in the state of the sealed high-pressure fluid that prevents the high-pressure fluid that lets in the communicating chamber from flowing from the drainage port, and when the drainage subassembly removes from the drainage port, the high-pressure fluid in the communication chamber is discharged from the discharge port through the discharge passage.

Description

Connecting joint capable of discharging high-pressure fluid

Technical Field

The utility model relates to a connect, especially relate to a but arrange high-pressure fluid's attach fitting.

Background

The pipeline is a transmission channel of fluid medium of some mechanical equipment. Typically, the conduit is not a single integral passage and it is often necessary to connect a plurality of conduits together by various types of fittings to form the intended fluid transfer path.

In this case, these joints can serve to communicate different pipes. In some cases, however, it is desirable to vent the fluid in the communicating conduits to allow for safe replacement of the fluid and removal of the conduits. For example, in some fuel cells, when the fuel cell needs to be maintained, the fuel cell sometimes needs to be disassembled, but high-pressure fluid such as hydrogen in some fuel cells cannot be directly discharged into the air. On the one hand, the pressure of hydrogen in the fuel cell is relatively large, and generally reaches 1.5 MPa. When the air pressure is directly sprayed out, solid particles are mixed, thereby bringing threat to the personal safety of operators.

In addition, these fluids sometimes need to be recycled, so it is best to have them be collected in a predetermined manner as they are being directed out.

The connecting joint in the prior art can only play a role of connecting a pipeline, cannot realize a function of discharging fluid, and cannot collect the discharged fluid according to a preset mode.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a but discharge high-pressure fluid's attach fitting, wherein but discharge high-pressure fluid's attach fitting can switch under sealed high-pressure fluid and discharge high-pressure fluid's two kinds of states to when the high-pressure fluid that will flow through needs derive, only need with but discharge high-pressure fluid's attach fitting switch to discharge high-pressure fluid's state can.

An object of the utility model is to provide a but arrange high-pressure fluid's attach fitting, wherein but arrange high-pressure fluid's attach fitting can derive high-pressure fluid according to predetermined flow direction.

An object of the utility model is to provide a but discharge high-pressure fluid's attach fitting, wherein but discharge high-pressure fluid's attach fitting simple structure, the user of being convenient for will but discharge high-pressure fluid's attach fitting is in switch between sealed high-pressure fluid's the state and the state of discharge high-pressure fluid.

An object of the utility model is to provide a but arrange high-pressure fluid's attach fitting, wherein high-pressure fluid can be the high-pressure gas more than 1.5Mpa or hydraulic pressure high-pressure fluid more than 1.5 Mpa.

An object of the utility model is to provide a but arrange high-pressure fluid's attach fitting, wherein but arrange high-pressure fluid's attach fitting can avoid the direct injection of exhaust high-pressure fluid to operating personnel to the personal safety who has avoided operating personnel receives the threat.

An object of the utility model is to provide a but arrange high-pressure fluid's attach fitting, wherein but arrange high-pressure fluid's attach fitting is in when sealed high-pressure fluid's the state, can avoid leading to fluidic leakage because of the coefficient of thermal expansion difference of preparation material.

An object of the utility model is to provide a but high-pressure fluid's attach fitting is arranged, wherein operating personnel can be through control but high-pressure fluid's attach fitting is in but the fluid discharge's of the attach fitting of high-pressure fluid is arranged the time of discharge high-pressure fluid volume of control flow through.

An object of the utility model is to provide a but arrange high-pressure fluid's attach fitting, wherein but arrange high-pressure fluid's attach fitting can allow operating personnel one-hand operation, and operating personnel makes can arrange high-pressure fluid's attach fitting when switching under sealed high-pressure fluid and the two kinds of states of discharge high-pressure fluid, need not with the help of other instruments.

In order to realize the utility model discloses above at least one purpose, the utility model provides a can arrange high-pressure fluid's attach fitting, wherein can arrange high-pressure fluid's attach fitting includes:

a connector body, wherein the connector body has a first connector port and a second connector port, and a communication cavity is defined between the first connector port and the second connector port;

a drainage body, wherein the drainage body forms a drainage channel and a drainage port, the drainage channel being in communication with the drainage port and the communication chamber; and

a drainage assembly, wherein the drainage assembly is movably disposed in the drainage channel and is releasably sealed to the drainage port, when the drainage port is sealed by the drainage assembly, the high-pressure fluid drainable connection joint is in a state of sealing high-pressure fluid that prevents high-pressure fluid that is communicated with the communication chamber from flowing out of the drainage port, and when the drainage assembly is moved away from the drainage port, high-pressure fluid in the communication chamber flows out of the drainage port through the drainage channel.

According to an embodiment of the present invention, the drainage assembly includes an elastic member and a sealing core, the elastic member is held in the drainage channel of the drainage body in a compressed manner, and the sealing core is movably disposed in the drainage channel along an extending direction of the drainage channel and is sealed at the drainage port.

According to the utility model discloses an embodiment, the one end of elastic component by spacing in the inner wall of drainage passageway, just sealed core is supported with can promoting to press in the other end of elastic component, wherein sealed core is sealed in the drainage mouth, so that can arrange high-pressure fluid's attach fitting is in the state of sealed high-pressure fluid.

According to an embodiment of the present invention, the drainage body forms a communication channel coaxial with the drainage channel, wherein the communication channel is communicated with the drainage port.

According to the utility model discloses an embodiment, sealed core with can be inserted a drainage pipe of intercommunication passageway supports to press and the mode that removes seals in drainage port.

According to an embodiment of the present invention, the sealing core passes through the drainage port and extends into the communication passage.

According to an embodiment of the present invention, the sealing core has a body portion and a cone portion, the end portion of the body portion integrally extends to form the cone portion, the cone portion is pressed by the elastic member to seal the drainage port, and part of the cone portion passes through the drainage port and is inserted into the communication passage.

According to an embodiment of the present invention, the drainage assembly comprises a guiding member, wherein the guiding member has a ring portion, wherein the ring portion forms an annular hole, the guiding member is disposed in the drainage channel, the body portion is disposed to pass through the annular hole, and the cone portion is fixed to the annular hole in an interference fit manner.

According to an embodiment of the invention, the guide member has a guide portion, wherein the guide portion extends from the annular portion in the axial direction of the drainage channel, and the guide portion is attached to the inner wall of the drainage channel.

According to another aspect of the present invention, there is provided a method of discharging high pressure fluid, wherein the method comprises the steps of:

(S1) directing the high-pressure fluid in a communication chamber formed by a joint body to a communication passage communicating with a discharge port through a discharge passage formed by a discharge body and the discharge port communicating with the discharge passage by pushing a discharge pipe against a seal core sealingly held at the discharge port, so that the high-pressure fluid in the communication chamber flows into the communication passage via the discharge port; and

(S2) releasing the drainage tube, and pushing the sealing core to sealingly press fit to the drainage port by an elastic restoring force of an elastic member pressing the sealing core against the drainage port.

Further objects and advantages of the invention will be fully apparent from the ensuing description.

These and other objects, features and advantages of the present invention will become more fully apparent from the following detailed description.

Drawings

Fig. 1 shows a perspective view of a connection joint for discharging high-pressure fluid according to the present invention.

Fig. 2 shows an exploded view of an angle of the inventive high pressure fluid drainable connector.

Fig. 3 shows an exploded view of another angle of the inventive high pressure fluid drainable connector.

Fig. 4 is a sectional view showing the high-pressure fluid dischargeable connection joint of the present invention in a state of discharging high-pressure fluid.

Fig. 5 is a sectional view showing a part of the structure of the connection joint for discharging high-pressure fluid according to the present invention in a state of sealing the high-pressure fluid.

Figure 6 shows a perspective view of the sealing core of the sealing assembly of the present invention.

Figure 7 shows a perspective view of the wire member of the seal assembly of the present invention.

Fig. 8 shows a perspective view of the drain pipe according to the present invention.

Detailed Description

The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents and other technical solutions without departing from the spirit and scope of the invention.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in a generic and descriptive sense only and not for purposes of limitation, as the terms are used in the description to indicate that the referenced device or element must have the specified orientation, be constructed and operated in the specified orientation, and not for the purposes of limitation.

A high pressure fluid discharging connection joint 100 according to a preferred embodiment of the present invention will be described in detail below with reference to fig. 1 to 8, wherein the high pressure fluid discharging connection joint 100 can be used to communicate at least two pipes, so as to communicate fluid in at least two of the communicated pipes, especially high pressure fluid in the pipes.

It will be understood by those skilled in the art that the high pressure fluid may be a high pressure gas or a high pressure liquid, and the present invention is not limited in this respect. In at least one embodiment of the present invention, the high pressure fluid is high pressure gas or high pressure liquid, which is not a limitation of the present invention.

Specifically, the high-pressure fluid drainable connection joint 100 includes a joint body 10, wherein the joint body 10 has a first connection port 101 and a second connection port 102. A communication cavity 1001 is defined between the first connection port 101 and the second connection port 102. When the first connection port 101 and the second connection port 102 are respectively communicated with a pipe, the two communicated pipes are communicated with each other through the communication cavity 1001, and high-pressure fluid in the two pipes is caused to flow through the communication cavity 1001. As shown in fig. 5.

Further, the connection joint 100 capable of discharging high-pressure fluid comprises a drainage body 20, wherein the drainage body 20 forms a drainage channel 201 and a drainage port 202. The drainage channel 201 is connected to the drainage port 202 and the communication chamber 1001.

The high pressure fluid drainable connector 100 further includes a drain assembly 30. The drainage assembly 30 is movably disposed in the drainage channel 201, and the drainage assembly 30 is releasably sealed to the drainage port 202. When the drainage port 202 is sealed by the drainage assembly 30, the high-pressure fluid drainable connection joint 100 is in a high-pressure fluid-tight state, and fluid communication between at least two of the pipes can be achieved. When the drainage assembly 30 is moved, the high-pressure fluid in the communication chamber 1001 can be led out from the drainage port 202 through the drainage channel 201.

The drainage assembly 30 includes an elastic member 31 and a sealing core 32. The elastic element 31 is held in a compressed manner in the drainage channel 201 of the drainage body 20. The sealing core 32 is movably disposed in the drainage channel 201 along the extending direction of the drainage channel 201, and is sealed to the drainage port 202.

Specifically, one end of the elastic member 31 is limited on the inner wall of the drainage channel 201, and the sealing core 32 is pushed against the other end of the elastic member 31, and the sealing core 32 is sealed on the drainage port 202. At this time, the connection joint 100, which can discharge high-pressure fluid, is in a state of sealing the high-pressure fluid. As shown in fig. 5.

When the sealing core 32 is pressed to further press against the elastic member 31 to cause the elastic member 31 to contract, the sealing core 32 slides towards the elastic member 31 for a predetermined distance, so as to unseal the drainage port 202, and thus allow the high-pressure fluid in the communication cavity 1001 to flow out from the drainage port 202 through the drainage channel 201, at which time, the high-pressure fluid dischargeable connection joint 100 is in a state of discharging the high-pressure fluid. As shown in fig. 4.

It is worth mentioning that the drainage body 20 further forms a communication channel 203 coaxial with the drainage channel 201. The communication passage 203 is communicated with the discharge port 202 so that when the high-pressure fluid flows out from the discharge port 202 via the discharge passage 201, the high-pressure fluid can further flow to the communication passage 203.

Preferably, at least one ring-shaped sealing ring 40 is disposed on the inner wall of the communication passage 203, so that when a discharge pipe is inserted into the communication passage 203, the space between the outer wall of the discharge pipe and the inner wall forming the communication passage 203 is sealed by the ring-shaped sealing ring 40.

After the drainage tube is inserted into the communication channel 203, the end of the drainage tube presses against the sealing core 32, so that the sealing core 32 moves towards the elastic member 31 to compress the elastic member 31, and the drainage port 202 is unsealed. At this time, since the gap between the inner wall forming the communication passage 203 and the drain pipe is sealed by the ring seal 40, the fluid discharged from the drain port 202 can directly flow into the drain pipe communicating with the communication passage 203 to be discharged as a line formed by the drain pipe.

In one embodiment, the annular sealing ring 40 is not disposed in the communication passage 203, and the annular sealing ring 40 is fitted to an outer wall of the drain pipe inserted into the communication passage 203.

It can be understood by those skilled in the art that the connection joint 100 capable of discharging high-pressure fluid according to the present embodiment enables an operator to discharge high-pressure fluid in the communication cavity 1001 without using other tools, and only inserts the discharge tube directly into the communication channel 203 to push the sealing core 32 to move so as to unseal the discharge port 202.

It is worth mentioning that since the high pressure fluid can be led out from the drain pipe, the high pressure fluid can be led out in a predetermined manner without posing a threat to the personal safety of the operator.

Preferably, the drainage body 20 includes a drainage portion 21 and a docking portion 22. The drain 21 is formed integrally from the joint body 10, and forms the drain passage 201 communicating with the communication chamber 1001. The drain 21 forms a mounting opening 204. The elastic element 31 and the sealing core 32 are arranged to be inserted into the drainage channel 201 from the mounting opening 204.

The docking portion 22 has a docking end 221 and a docking end 222. The docking end 221 of the docking portion 22 forms a pair of interfaces 2201, wherein the connection end 222 of the docking portion 22 forms an interface 2202. The abutting portion 22 forms the communication passage 203 between the abutting end 221 and the connecting end 222.

The docking end 221 is welded to the drain 21 such that the mounting port 204 is in sealed communication with the docking port 2201. Preferably, the joint body 10 and the drainage body 20 are made of the same material, so that after the abutting end 221 is welded to the drainage portion 21, the abutting end 221 and the drainage portion 21 do not cause fluid leakage due to different thermal expansion coefficients. More preferably, the connector body 10 and the drainage body 20 are both made of the same plastic.

Preferably, the inner wall of the communication channel 203 at a predetermined distance from the abutting end 221 extends radially to form an annular ledge 223, wherein the annular ledge 223 forms a through opening, wherein the through opening is defined as the drainage opening 202. The discharge port 202 has a cross-sectional diameter smaller than at least a portion of the sealing core 32 to form a seal with the annular ledge 223 when the sealing core 32 is pressed against the discharge port 202.

That is, after the abutting end 221 is welded to the drainage portion 21, the sealing core 32 installed in the drainage channel 201 from the assembling port 204 is pressed by the annular flange 223, so that the elastic member 31 maintains the compressed state, and the sealing core 32 seals the drainage port 202 under the elastic force of the elastic member 31.

More preferably, the seal core 32 has a body portion 321 and a tapered portion 322. The end of the body 321 integrally extends to form the tapered portion 322. When the elastic member 31 is implemented as a coil spring, the coil spring is sleeved on the body 321 and presses against the tapered portion 322.

In the present embodiment, the conical portion 322 is pressed by the elastic member 31 to seal the drainage port 202, and a portion of the conical portion 322 passes through the drainage port 202 and is inserted into the communication channel 203. In this way, after the drainage tube from the outside is inserted into the communication channel 203, the end inserted into the communication channel 203 can press against the tapered portion 322 inserted into the communication channel 203, so that the tapered portion 322 can move toward the direction of compressing the elastic member 31, thereby unsealing the drainage port 202. Thus, the drain port 202 is switched between the sealed and unsealed states without the need for an operator to resort to an operator tool. In particular, when the drainage port 202 is in the unsealing state for a predetermined time, the tapered portion 322 will automatically return to the state of sealing the drainage port 202 by the operator only by removing the pressure applied to the tapered portion 322, so that the drainage port 202 can be kept sealed.

In other words, at this time, an operator may control the amount of high pressure fluid that is discharged by controlling the time that the discharge port 202 is in the unsealed state.

Preferably, the drainage assembly 30 further comprises a guiding member 33, wherein the guiding member 33 has a ring portion 331, wherein the ring portion 331 forms an annular hole 33101. The guide member 33 is disposed at the drainage channel 201. The body portion 321 is disposed through the annular hole 33101, and the cone portion 322 is fixed to the annular hole 33101 in an interference fit manner, so that when the cone portion 322 is pressed by the drainage tube to compress the elastic member 31, the guide member 33 slides together with the seal core 32 toward a direction of compressing the elastic member 31.

The guiding member 33 further has a guiding portion 332, wherein the guiding portion 332 extends from the annular portion 331 in an axial direction of the drainage channel 201, and the guiding portion 332 is abutted against the inner wall of the drainage channel 201, so that when the guiding member 33 slides together with the sealing core 32 toward the elastic member 31, the sealing core 32 is not excessively deviated from the axial direction of the drainage channel 201 due to the abutting of the guiding portion 332 of the guiding member 33 against the inner wall of the drainage channel 201, and the sealing core 32 can rapidly return to a state of sealing the drainage port 202 when the pressure against the sealing core 32 is removed.

Preferably, the side wall of the annular portion 331 integrally extends along the extending direction of the drainage channel 201 to form at least three guiding ribs, wherein the guiding ribs form the guiding portions 332. In addition, a nesting space 3301 is formed between the guiding parts 332 to accommodate the elastic member 31.

Further, the high pressure fluid drainable connector 100 further includes a limiting member 50, wherein the limiting member 50 is disposed on the drainage body 20 for limiting the drainage pipe inserted into the communication channel 203.

When the drain pipe is inserted into the communication channel 203, the drain pipe is locked by the limiting assembly 50 without being subjected to an external force. At this time, the discharge pipe and the inner wall forming the communication passage 203 are sealed by the annular seal ring 40, and at the same time, the discharge port 202 is sealed by the seal core 32.

When the high-pressure fluid in the communication cavity 1001 needs to be discharged from the drainage channel 201, an operator only needs to manually move the drainage tube toward the sealing core 32, so as to enable the sealing core 32 to be pressed by the end of the drainage tube to move away from the drainage port 202, thereby unsealing the drainage port 202. Then, a pressure difference is formed between the high-pressure fluid in the communication chamber 1001 and the communication passage 203, so that the high-pressure fluid in the communication chamber 1001 flows to the communication passage 203 and then flows into the drain pipe, and is led out by the drain pipe in a predetermined manner.

The limiting assembly 50 includes a clamp spring 51. At least one locking window 205 is disposed on a side wall of the drainage body 20 forming the communication channel 203. Specifically, the card window 205 is provided to the docking portion 22.

The latch spring 51 has a latch portion 511 and a resilient arm 512. The elastic arm 512 is implemented to be made of a flexible material having a predetermined strength, wherein the engaging part 511 is implemented to be made of a hard material. A bayonet 5101 is formed between the elastic arm 512 and the engaging portion 511.

The resilient arms 512 extend radially toward the bayonet 5101 to form at least one pair of ledges 513. When the engaging portion 511 is pressed in the radial direction, the elastic arm 512 is deformed, so that the bayonet 5101 is increased. When the pressure pressing the engaging portion 511 is removed, the bayonet 5101 tends to decrease.

The engaging portion 511 is radially movably held in the catch window 205. Thus, when the drain tube is inserted into the communication channel 203, the annular snap-fit on the outer wall of the drain tube can radially press the resilient arms 512, thereby deforming the resilient arms 512 such that the annular snap-fit on the outer wall of the drain tube can pass over the pair of snap-fit rims 513 on the resilient arms 512. Therefore, the drain pipe is restricted by the clamp spring 51 and cannot be pulled out from the communication passage 203. When the drainage port 202 needs to be unsealed, the drainage pipe is only required to be further pressed towards the sealing core 32, and the sealing core 32 is pressed by the end of the drainage pipe to move away from the drainage port 202, so that the high-pressure fluid flows to the communication channel 203.

Further, the stop assembly 50 further includes a stop member 52. The stopper member 52 is disposed on the inner wall of the communication passage 203 between the circlip 51 and the annular seal ring 40. This prevents the engagement portion 511 of the snap spring 51 from being excessively pressed to press the entire compression spring into the communication passage 203 in the radial direction. On the other hand, the annular clamp on the outer wall of the drainage tube is blocked from excessively pressing the sealing core 32 away from the drainage port 202.

Preferably, the high pressure fluid drainable connection fitting 100 includes the drain pipe 60. The outer wall of the drainage pipe 60 is provided with the annular snap 601. The drain tube 60 has an insertion end 61 and a connecting tube end 62. A lead-out channel 602 is formed between the insertion end 61 and the connecting tube end 62.

The insertion end 61 of the drain pipe 60 is inserted into the communication channel 203, and after the annular snap projection 601 on the drain pipe 60 is engaged with the snap spring 51, the lead-out channel 602 and the communication channel 203 are hermetically conducted.

Preferably, an inner wall of the lead-out channel 602 near the insertion end 61 forms an abutting portion 63, wherein a branch opening 603 is formed between the abutting portion 63 and the inner wall of the lead-out channel 602, wherein the branch opening 603 is communicated with the lead-out channel 602 and the communication channel 203. The abutting portion 63 extends from the leading-out passage 602 to the insertion end 61, so that when the drain pipe 60 is pushed toward the seal core 32, the seal core 32 can be pressed by the abutting portion 63, and the diversion port 603 is not sealed by the seal core 32, whereby the high-pressure fluid led out from the communication chamber 1001 can be smoothly led out from the leading-out passage 602.

Further, the outer wall of the connecting pipe end 62 of the drainage pipe 60 is integrally formed with a bamboo joint-shaped limiting clamp projection for abutting against a conduit.

Preferably, the high-pressure fluid dischargeable connection joint 100 further includes at least two sheaths 70, wherein each of the sheaths 70 is sleeved on the first connection port 101 and the second connection port 102 of the joint body 10.

According to another aspect of the present invention, the present invention discloses a method for discharging high pressure fluid, wherein the method comprises the steps of:

(S1) directing the high-pressure fluid in a communicating chamber 1001 formed by a joint body 10 to a communicating passage 203 communicating with a drain port 202 through a drain passage 201 formed by a drain body 20 and the drain port 202 communicating with the drain passage 201 by pushing a drain pipe 60 against a seal core 32 sealingly held at the drain port 202 in a pressure-tight manner, so that the high-pressure fluid in the communicating chamber 1001 flows into the communicating passage 203 via the drain port 202 to place the high-pressure fluid dischargeable junction joint 100 in a state of discharging the high-pressure fluid; and

(S2) releasing the drainage pipe 60, and pushing the sealing core 32 to sealingly press against the drainage port 202 by the elastic restoring force of an elastic member 31 pressing the sealing core 32 against the drainage port 202, so that the high-pressure fluid drainable connection joint 100 is in a high-pressure fluid sealing state.

It will be appreciated by persons skilled in the art that the embodiments of the invention shown in the foregoing description are given by way of example only and are not limiting of the invention. The objects of the present invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the embodiments without departing from the principles, embodiments of the present invention may have any deformation or modification.

Claims (10)

1. A high-pressure fluid drainable connector fitting, comprising:

a connector body, wherein the connector body has a first connector port and a second connector port, and a communication cavity is defined between the first connector port and the second connector port;

a drainage body, wherein the drainage body forms a drainage channel and a drainage port, the drainage channel being in communication with the drainage port and the communication chamber; and

a drainage assembly, wherein the drainage assembly is movably disposed in the drainage channel and is releasably sealed to the drainage port, when the drainage port is sealed by the drainage assembly, the high-pressure fluid drainable connection joint is in a state of sealing high-pressure fluid that prevents high-pressure fluid that is communicated with the communication chamber from flowing out of the drainage port, and when the drainage assembly is moved away from the drainage port, high-pressure fluid in the communication chamber flows out of the drainage port through the drainage channel.

2. The connector fitting according to claim 1, wherein the drainage assembly comprises a resilient member and a sealing core, the resilient member is compressively retained in the drainage channel of the drainage body, and the sealing core is movably disposed in the drainage channel along an extending direction of the drainage channel and is sealed to the drainage port.

3. The high-pressure fluid drainable connection joint as claimed in claim 2, wherein one end of the elastic member is limited to the inner wall of the drainage channel, and the sealing core is pushed against the other end of the elastic member, wherein the sealing core is sealed to the drainage port, so that the high-pressure fluid drainable connection joint is in a state of sealing high-pressure fluid.

4. The connector fitting according to any one of claims 2 to 3, wherein the drainage body forms a communication channel coaxial with the drainage channel, wherein the communication channel is connected to the drainage port.

5. The high-pressure fluid dischargeable connection joint according to claim 4, wherein said seal core is sealed to said discharge port in such a manner as to be capable of being moved by being pressed against by a discharge pipe inserted into said communication passage.

6. The high-pressure fluid drainable connector as claimed in claim 5, wherein the sealing core extends through the drainage port into the communication passage.

7. The connection joint for high-pressure fluid discharge according to claim 5, wherein the seal core has a body portion and a tapered portion, the end portion of the body portion integrally extends to form the tapered portion, the tapered portion is pressed by the elastic member to seal the discharge port, and a portion of the tapered portion is inserted into the communication passage through the discharge port.

8. The high pressure fluid drainable connector as claimed in claim 7, wherein the drainage assembly includes a guide member, wherein the guide member has an annular portion, wherein the annular portion defines an annular aperture, wherein the guide member is disposed in the drainage passage, wherein the body portion is disposed through the annular aperture, and wherein the cone portion is secured to the annular aperture in an interference fit.

9. The high-pressure fluid drainable connector as claimed in claim 8, wherein the guide member has a guide portion, wherein the guide portion extends from the annular portion in an axial direction with respect to the discharge passage, and wherein the guide portion is abutted against an inner wall of the discharge passage.

10. The high-pressure fluid drainable connection fitting as claimed in claim 1, wherein the high-pressure fluid drainable connection fitting includes at least two sheaths, each of which is sleeved at the first connection port and the second connection port of the fitting body.

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