CN219994696U - Anti-leakage ball valve with butt joint pipe and anti-leakage ball valve - Google Patents

Abstract

The utility model discloses a leakage-proof ball valve with a butt joint pipe and a leakage-proof ball valve thereof, wherein the leakage-proof ball valve with the butt joint pipe comprises at least one butt joint pipe and a leakage-proof ball valve, the butt joint pipe is provided with a butt joint channel, the leakage-proof ball valve comprises a valve body and at least one leakage-proof component, the valve body comprises a flow control piece, an introduction piece and at least one discharge piece, the introduction piece is provided with a guide channel, the discharge piece is provided with a discharge channel, the leakage-proof component comprises a flow guide piece, a leakage-proof piece and at least one elastic piece, the flow guide piece is provided with at least one flow guide space, at least one inlet and at least one outer discharge port, the flow guide piece comprises a flow guide part and a blocking part, the leakage-proof piece is provided with a butt joint channel and an opening and closing port, and the leakage-proof piece is movably arranged on the periphery of the flow guide piece and is in sealing connection with the inner wall of the discharge channel. The utility model can avoid the condition of fluid leakage during the replacement of the butt joint pipe and improve the sealing performance of the butt joint pipe.

Description

Anti-leakage ball valve with butt joint pipe and anti-leakage ball valve

Technical Field

The utility model relates to the technical field of valves, in particular to a leakage-proof ball valve with a butt joint pipe and the leakage-proof ball valve.

Background

The valve is a control component in a fluid delivery system, the valve typically having an inflow channel and at least one outflow channel, the spool of the valve being capable of controlling the inflow channel and the outflow channel to switch between an on state and an off state. When the inflow channel and the outflow channel are communicated, the fluid enters the inflow channel and is guided to the outflow channel by the action of external driving, and finally is discharged from the outflow channel. It is apparent that when the valve cartridge blocks the inflow passage and the outflow passage, a part of the fluid in the outflow passage is lost from the external force and stays in the outflow passage.

In addition, the outflow channel of the valve is usually communicated with a pair of connecting pipes, and the need for replacing the connecting pipes exists due to corrosion damage of the connecting pipes or the requirement of fluid guiding orientation, so that when the connecting pipes are detached from the valve, the outflow channel can be communicated with the external environment, and fluid in the outflow channel is leaked.

Disclosure of Invention

The utility model has the advantages that the leakage-proof ball valve with the butt joint pipe and the leakage-proof ball valve thereof are provided, the leakage of fluid during the replacement of the butt joint pipe can be avoided, and the use tightness is improved.

To achieve at least one of the above advantages, the present utility model provides a leakage-preventing ball valve with a nipple, the leakage-preventing ball valve with a nipple comprising:

at least one docking tube having a docking channel;

a leak-proof ball valve, the leak-proof ball valve comprising:

the valve body comprises a flow control part, an introduction part and at least one discharge part, the flow control part is arranged between the introduction part and the discharge part, the introduction part is provided with an introduction channel, the discharge part is provided with a discharge channel, the flow control part can be used for communicating or blocking the introduction channel and the discharge channel, the butt joint pipe is detachably and hermetically connected with the discharge part, and the butt joint channel is communicated with the discharge channel when the butt joint pipe is in sealed connection with the discharge part;

at least one leakage prevention assembly mounted to the lead-out channel, the leakage prevention assembly comprising:

the guide piece is arranged at a preset position of the guide-out channel and is provided with at least one guide space, at least one guide inlet and at least one outer discharge port, the guide inlet and the outer discharge port are communicated with the guide space, the guide space is communicated with the guide-out channel through the guide inlet, the guide piece comprises a guide part and a blocking part, the blocking part is formed by extending the guide part, and the blocking part and the guide part form the guide space;

the size of the connecting channel is not smaller than that of the guide part, the guide space is communicated with the connecting channel through the outer discharge port, the size of the opening and closing port is matched with the blocking part, the leakage prevention part is movably arranged on the periphery of the guide part and is in sealing connection with the inner wall of the guide out channel, the blocking part is arranged to be capable of sealing and blocking the opening when the guide out channel and the guide in channel are blocked by the flow control part and the butt joint pipe is detached from the guide out channel, and the leakage prevention part can be pushed by the butt joint pipe inserted into the guide out channel to move along the outer surface of the guide out channel so that the blocking part extends out of the opening and closing port through the connecting channel, and at the moment, the guide space is communicated with the butt joint channel through the outer discharge port;

at least one elastic piece, the elastic piece is installed in the piece that prevents letting out, the elastic piece is set up can prevent letting out the piece by the butt joint pipe promotes and moves the time take place elastic deformation, just prevent letting out the piece can be when the butt joint pipe with the deriving piece is detached receive the elasticity effect of elastic piece and reset in order to with the jam portion mutually support in order to block up the mouth that opens and shuts.

According to an embodiment of the utility model, the cross-sectional dimension of the flow guiding portion is smaller than the cross-sectional dimension of the interface channel.

According to an embodiment of the present utility model, the anti-leakage ball valve further includes at least one sealing assembly, and the sealing assembly includes a first sealing member formed between the blocking portion and the inner wall of the anti-leakage member when the blocking portion blocks the opening and closing opening.

According to an embodiment of the utility model, the sealing assembly further comprises a second sealing member, which is formed between the docking tube and the lead-out member when the docking tube is plugged with the lead-out member.

According to an embodiment of the present utility model, the guide member further includes a fixing portion, the fixing portion is formed by extending from an end of the guide portion away from the blocking portion, the introducing port is formed at the fixing portion, the guide portion and the blocking portion together form the guide space, a part of an inner wall of the guide member extends toward a center of the guide channel to form a step, the step is located on a side of the guide portion near the fixing portion, and the fixing portion is limited to a predetermined position of the guide channel by abutting against the step.

According to an embodiment of the present utility model, the guide member further includes a positioning structure, where the positioning structure includes at least one protrusion and at least one groove, the protrusion and the groove are disposed correspondingly, one of the protrusion and the groove is disposed on the fixing portion and/or the guide portion, and the other one of the protrusion and the groove is disposed on the step, and the guide member is positioned and mounted on the step through a cooperation between the protrusion and the groove.

According to an embodiment of the utility model, the docking tube comprises a docking portion and a connecting portion, the docking channel is formed at the docking portion, the connecting portion is located at the periphery of the docking portion and forms a circle of groove with the outer wall of the docking portion, and the guiding-out piece is connected with the docking tube in a mode of sleeving the docking portion and being clamped in the circle groove.

According to an embodiment of the present utility model, the anti-leakage ball valve further comprises at least one mounting assembly, the mounting assembly comprises a connector, the connector is connected to the outside of the guiding-out piece, and the butt joint pipe is in threaded connection with the connector through the connecting portion so as to be mounted on the guiding-out piece.

According to an embodiment of the present utility model, the mounting assembly further includes a bearing, the abutting member is mounted on an outer ring of the bearing, the bearing is sleeved on the guiding member, an end of the abutting tube away from the guiding member deviates from an extending direction of the guiding channel, and the abutting tube can rotate by being matched with the bearing with an axis of the guiding member as a rotation center.

To achieve at least one of the above advantages, the present utility model provides a leakage-preventing ball valve detachably and sealingly connected to at least one pair of joint pipes, the joint pipes having a joint passage, the leakage-preventing ball valve comprising:

the valve body comprises a flow control part, an introduction part and at least one discharge part, the flow control part is arranged between the introduction part and the discharge part, the introduction part is provided with an introduction channel, the discharge part is provided with a discharge channel, the flow control part can be used for communicating or blocking the introduction channel and the discharge channel, the butt joint pipe is detachably and hermetically connected with the discharge part, and the butt joint channel is communicated with the discharge channel when the butt joint pipe is in sealed connection with the discharge part;

at least one leakage prevention assembly mounted to the lead-out channel, the leakage prevention assembly comprising:

the guide piece is arranged at a preset position of the guide-out channel and is provided with at least one guide space, at least one guide inlet and at least one outer discharge port, the guide inlet and the outer discharge port are communicated with the guide space, the guide space is communicated with the guide-out channel through the guide inlet, the guide piece comprises a guide part and a blocking part, the blocking part is formed by extending the guide part, and the blocking part and the guide part form the guide space;

the size of the connecting channel is not smaller than that of the guide part, the guide space is communicated with the connecting channel through the outer discharge port, the size of the opening and closing port is matched with the blocking part, the leakage prevention part is movably arranged on the periphery of the guide part and is in sealing connection with the inner wall of the guide out channel, the blocking part is arranged to be capable of sealing and blocking the opening when the guide out channel and the guide in channel are blocked by the flow control part and the butt joint pipe is detached from the guide out channel, and the leakage prevention part can be pushed by the butt joint pipe inserted into the guide out channel to move along the outer surface of the guide out channel so that the blocking part extends out of the opening and closing port through the connecting channel, and at the moment, the guide space is communicated with the butt joint channel through the outer discharge port;

at least one elastic piece, the elastic piece is installed in the piece that prevents letting out, the elastic piece is set up can prevent letting out the piece by the butt joint pipe promotes and moves the time take place elastic deformation, just prevent letting out the piece can be when the butt joint pipe with the deriving piece is detached receive the elasticity effect of elastic piece and reset in order to with the jam portion mutually support in order to block up the mouth that opens and shuts.

Drawings

Fig. 1 shows a schematic structural view of the anti-leakage ball valve with the butt joint pipe.

Fig. 2 shows a partial sectional view of the anti-leakage ball valve with the butt joint pipe according to the present utility model.

Fig. 3 shows a sectional view of the structure of the anti-leakage ball valve with the butt joint pipe according to the present utility model before moving.

Fig. 4 shows a sectional view of the structure of the anti-leakage ball valve with the butt joint pipe according to the present utility model after movement.

Fig. 5 shows another partial perspective view of the anti-leakage ball valve with the butt joint pipe according to the present utility model.

Fig. 6 shows an exploded view of another partial structure of the anti-leakage ball valve with the nipple according to the present utility model.

Detailed Description

The following description is presented to enable one of ordinary skill in the art to make and use the utility model. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art. The basic principles of the utility model 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 utility model.

It will be appreciated by those skilled in the art that in the present disclosure, the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. refer to an orientation or positional relationship based on that shown in the drawings, which is merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore the above terms should not be construed as limiting the present utility model.

It will be understood that the terms "a" and "an" should be interpreted as referring to "at least one" or "one or more," i.e., in one embodiment, the number of elements may be one, while in another embodiment, the number of elements may be plural, and the term "a" should not be interpreted as limiting the number.

Referring to fig. 1 to 4, a leak-proof ball valve with a nipple according to a preferred embodiment of the present utility model will be described in detail below, the leak-proof ball valve with a nipple including a leak-proof ball valve including a valve body 10, the valve body 10 including a flow control member 11, an introduction member 12 and at least one discharge member 13, the flow control member 11 being installed between the introduction member 12 and the discharge member 13, the introduction member 12 having an introduction channel 1201, the discharge member 13 having a discharge channel 1301, the flow control member 11 being configured to communicate or block the introduction channel 1201 with the discharge channel 1301 to control the flow of fluid from the introduction channel 1201 to the discharge channel 1301.

Referring to fig. 2 to 3, further, the anti-leakage ball valve with the docking tube further includes at least one docking tube 20, and the docking tube 20 is detachably and hermetically connected to the lead-out 13. The docking tube 20 has a docking channel 201, and the docking channel 201 communicates with the lead-out channel 1301 when the docking tube 20 is in sealing engagement with the lead-out member 13.

As will be appreciated by those skilled in the art, when the flow control member 11 controls the introduction channel 1201 and the discharge channel 1301 to change from the communication state to the blocking state, a part of the fluid is retained in the discharge channel 1301 and cannot be discharged, which makes the discharge channel 1301 communicate with the outside when the docking pipe 20 is detached, and there is a case where the fluid in the discharge channel 1301 leaks.

Referring to fig. 3 to 6, the anti-leakage ball valve further includes at least one anti-leakage component 30, the anti-leakage component 30 is mounted on the outlet channel 1301, and the anti-leakage component 30 is configured to prevent fluid in the outlet channel 1301 from leaking when the outlet channel 1301 and the inlet channel 1201 are blocked by the flow control member 11 and the docking pipe 20 is detached from the outlet member 13.

The leakage prevention assembly 30 includes a guide member 31, and the guide member 31 is disposed at a predetermined position of the guide-out channel 1301. The guide member 31 has at least one guide space 3101, at least one inlet 3102 and at least one outlet 3103, the inlet 3102 and the outlet 3103 are both in communication with the guide space 3101, and the guide space 3101 is in communication with the outlet channel 1301 through the inlet 3102.

Referring to fig. 5 to 6, the guide member 31 includes a guide portion 311 and a blocking portion 312, the blocking portion 312 is formed by extending the guide portion 311, and the blocking portion 312 and the guide portion 311 form the guide space 3101.

The leakage preventing assembly 30 includes a leakage preventing member 32, the leakage preventing member 32 has a connecting channel 3201 and an opening 3202 communicating with the connecting channel 3201, the size of the connecting channel 3201 is not smaller than the size of the guiding portion 311, the guiding space 3101 communicates with the connecting channel 3201 through the outer discharging hole 3103, and the size of the opening and closing opening 3202 is adapted to the blocking portion 312. The leakage preventing member 32 is movably disposed at the outer circumference of the guide member 31 and is hermetically connected to the inner wall of the guide-out channel 1301. The blocking portion 312 is provided to seal and block the opening 3202 when the outlet channel 1301 and the inlet channel 1201 are blocked by the flow control member 11 and the docking pipe 20 is detached from the outlet member 13, so as to block the fluid in the docking channel 3201 from leaking.

Preferably, the cross-sectional dimension of the diversion portion 311 is smaller than the cross-sectional dimension of the connection channel 3201, so that when the blocking portion 312 blocks the opening and closing port 3202, the leakage prevention assembly 30 can hold more fluid, so that the leakage prevention member 32 is prevented from moving towards the direction of separating from the diversion member 31 due to the excessive fluid pressure in the guiding-out channel 1301, and the outer discharge port 3103 is communicated with the outside to leak fluid.

The leakage preventing member 32 may be pushed by the docking tube 20 inserted into the guiding channel 1301 to move along the outer surface of the guiding member 31, so that the blocking portion 312 extends out of the opening/closing opening 3202 from the connecting channel 3201, and at this time, the guiding space 3101 is communicated with the docking channel 201 through the outer discharging opening 3103, so as to replace the docking tube 20. In this process, the outlet channel 1301 is always isolated from the outside, so as to effectively prevent the occurrence of leakage of fluid caused by replacement of the docking tube 20.

Referring to fig. 3 to 6, the leakage preventing assembly 30 includes at least one elastic member 33, the elastic member 33 is mounted on the leakage preventing member 32, and the elastic member 33 is configured to be elastically deformed when the leakage preventing member 32 is pushed to move by the docking pipe 20. The leakage preventing member 32 can be reset by the elastic action of the elastic member 33 when the docking tube 20 is detached from the guiding member 13, so as to cooperate with the blocking portion 312 to block the opening and closing port 3202, thereby preventing fluid leakage.

Preferably, the elastic member 33 is implemented as a spring.

Referring to fig. 3 to 6, the anti-leakage ball valve further includes at least one sealing assembly 40, the sealing assembly 40 includes at least one first sealing member 41, and when the blocking portion 312 blocks the opening 3202, the first sealing member 41 is formed between the blocking portion 312 and the inner wall of the anti-leakage member 32, so as to prevent the fluid in the connecting channel 3201 from leaking out through the opening 3202.

Referring to fig. 3 to 4, further, the sealing assembly 40 further includes at least one second sealing member 42, wherein the second sealing member 42 is formed between the docking tube 20 and the guiding member 13 when the docking tube 20 is inserted into the guiding member 13, so as to prevent fluid from flowing out of a gap between the docking tube 20 and the guiding member 13.

Preferably, both the first seal 41 and the second seal 42 are embodied as sealing rings.

Referring to fig. 2, 5 and 6, the guide member 31 preferably further includes a fixing portion 313, and the fixing portion 313 is formed by extending an end of the guide portion 311 away from the blocking portion 312. The inlet 3102 is formed in the fixing portion 313, and the fixing portion 313, the guide portion 311, and the blocking portion 312 together form the guide space 3101. A part of the inner wall of the guiding member 13 extends toward the center of the guiding channel 1301 to form a step 131, the step 131 is located at one side of the guiding portion 311 near the fixing portion 313, and the fixing portion 313 abuts against the step 131 to be limited at a predetermined position of the guiding channel 1301, so that the guiding member 31 moves together while the abutting tube 20 pushes the anti-leakage member 32 to move.

Preferably, the elastic member 33 is located at the outer circumference of the guide portion 311 and connected to the fixing portion 313 and the leakage preventing member 32. In this way, the leakage preventing member 32 can remain connected to the flow guiding member 31 by the elastic member 33.

Referring to fig. 2 and 5, the guiding element 31 further includes a positioning structure 314, where the positioning structure 314 includes at least one protrusion 3141 and at least one groove 3142, the protrusion 3141 and the groove 3142 are disposed correspondingly, one of them is disposed on the fixing portion 313 and/or the guiding portion 311, and the other is disposed on the step 131. The guide member 31 is positioned and mounted on the step 131 through the cooperation of the protrusion 3141 and the groove 3142, so as to prevent the guide member 31 from influencing the use effect of the leakage preventing assembly 30 due to the deviation of the assembly position.

Preferably, the recess 3142 is formed at the step 131, and the protrusion 3141 is disposed at an end of the guide portion 311 near the fixing portion 313. When the fixing portion 313 abuts against the step 131, the protrusion 3141 is engaged with the groove 3142, so that the guide 31 is positioned and mounted on the guide-out channel 1301.

Referring to fig. 3 to 4, the docking tube 20 includes a docking portion 21 and a connection portion 22, the docking channel 201 is formed at the docking portion 21, and the connection portion 22 is located at an outer circumference of the docking portion 21 and forms a ring of grooves 202 with an outer wall of the docking portion 21. The guiding member 13 is connected to the docking tube 20 by being sleeved on the docking portion 21 and being clamped in the ring groove 202, so as to increase the tightness of connection between the guiding member 13 and the docking tube 20.

Referring to fig. 3 to 4, the anti-leakage ball valve further includes at least one mounting assembly 50, the mounting assembly 50 includes a connector 51, the connector 51 is connected to the outside of the guide-out member 13, and the docking tube 20 is screwed to the guide-out member 13 through the connection portion 22 and the connector 51.

The mounting assembly 50 further includes a bearing 52, the connector 51 is mounted on an outer ring of the bearing 52, and the bearing 52 is sleeved on the guiding-out member 13. The end of the docking tube 20 away from the guiding-out piece 13 deviates from the extending direction of the guiding-out channel 1301, and the docking tube 20 can rotate by cooperating with the bearing 52 with the axis of the guiding-out piece 13 as the rotation center, so as to adjust the direction of the docking tube 20 discharging the fluid, so as to meet the requirement of the actual fluid discharging angle or the actual pipeline connection requirement.

The working method of the anti-leakage ball valve with the butt joint pipe is provided, and comprises the following steps:

the docking pipe 20 is spliced in the guiding channel 1301 and pushes the leakage preventing member 32 to move along the guiding portion 311 of the guiding member 31 to be far away from the blocking portion 312, so that the blocking portion 312 extends out of the opening and closing opening 3202 from the connecting channel 3201 of the leakage preventing member 32, at this time, the guiding space 3101 of the guiding member 31 is communicated with the docking channel 201 of the docking pipe 20 through the outer discharging opening 3103, and the elastic member 33 connected with the leakage preventing member 32 is elastically changed;

when the docking pipe 20 is detached, the leakage preventing member 32 is reset by the elastic force of the elastic member 33, and at this time, the blocking portion 312 seals and blocks the opening 3202, so as to block the fluid in the outlet channel 1301 from leaking.

Preferably, the working method of the anti-leakage ball valve with the butt joint pipe further comprises the following steps:

when the docking portion 21 of the docking tube 20 is inserted into the guiding-out channel 1301, the guiding-out member 13 is clamped in a ring groove 202 formed by the outer wall of the docking portion 21 and the connecting portion 22, and the connecting portion 22 is connected to the docking member 51 in a threaded manner, at this time, the docking tube 20 can rotate by cooperating with the bearing 52 sleeved on the guiding-out member 13 with the axis of the guiding-out member 13 as a rotation center, so as to adjust the orientation of the docking tube 20 away from one end of the guiding-out member 13.

It will be appreciated by persons skilled in the art that the embodiments of the utility model described above and shown in the drawings are by way of example only and are not limiting. The advantages of the present utility model have been fully and effectively realized. The functional and structural principles of the present utility model have been shown and described in the examples and embodiments of the utility model may be modified or practiced without departing from the principles described.

Claims (10)

1. Anti-leakage ball valve with butt joint pipe, its characterized in that, anti-leakage ball valve with butt joint pipe includes:

at least one docking tube having a docking channel;

a leak-proof ball valve, the leak-proof ball valve comprising:

the valve body comprises a flow control part, an introduction part and at least one discharge part, the flow control part is arranged between the introduction part and the discharge part, the introduction part is provided with an introduction channel, the discharge part is provided with a discharge channel, the flow control part can be used for communicating or blocking the introduction channel and the discharge channel, the butt joint pipe is detachably and hermetically connected with the discharge part, and the butt joint channel is communicated with the discharge channel when the butt joint pipe is in sealed connection with the discharge part;

at least one leakage prevention assembly mounted to the lead-out channel, the leakage prevention assembly comprising:

the guide piece is arranged at a preset position of the guide-out channel and is provided with at least one guide space, at least one guide inlet and at least one outer discharge port, the guide inlet and the outer discharge port are communicated with the guide space, the guide space is communicated with the guide-out channel through the guide inlet, the guide piece comprises a guide part and a blocking part, the blocking part is formed by extending the guide part, and the blocking part and the guide part form the guide space;

the size of the connecting channel is not smaller than that of the guide part, the guide space is communicated with the connecting channel through the outer discharge port, the size of the opening and closing port is matched with the blocking part, the leakage prevention part is movably arranged on the periphery of the guide part and is in sealing connection with the inner wall of the guide out channel, the blocking part is arranged to be capable of sealing and blocking the opening when the guide out channel and the guide in channel are blocked by the flow control part and the butt joint pipe is detached from the guide out channel, and the leakage prevention part can be pushed by the butt joint pipe inserted into the guide out channel to move along the outer surface of the guide out channel so that the blocking part extends out of the opening and closing port through the connecting channel, and at the moment, the guide space is communicated with the butt joint channel through the outer discharge port;

at least one elastic piece, the elastic piece is installed in the piece that prevents letting out, the elastic piece is set up can prevent letting out the piece by the butt joint pipe promotes and moves the time take place elastic deformation, just prevent letting out the piece can be when the butt joint pipe with the deriving piece is detached receive the elasticity effect of elastic piece and reset in order to with the jam portion mutually support in order to block up the mouth that opens and shuts.

2. The leak-proof ball valve with a butt joint pipe according to claim 1, wherein the cross-sectional dimension of the flow guide portion is smaller than the cross-sectional dimension of the joint passage.

3. The leak-proof ball valve with a nipple of claim 1, further comprising at least one seal assembly including a first seal formed between the blocking portion and an inner wall of the leak-proof member when the blocking portion blocks the opening and closing opening.

4. The leak-proof ball valve with a nipple of claim 3, wherein the seal assembly further comprises a second seal formed between the nipple and the lead-out member when the nipple is mated with the lead-out member.

5. The anti-leakage ball valve with the butt joint pipe according to claim 1, wherein the guide piece further comprises a fixing portion, the fixing portion is formed by extending one end of the guide portion away from the blocking portion, the guide inlet is formed in the fixing portion, the guide portion and the blocking portion jointly form the guide space, a part of inner wall of the guide piece extends towards the center of the guide channel to form a step, the step is located on one side, close to the fixing portion, of the guide portion, and the fixing portion is limited to a preset position of the guide channel through abutting against the step.

6. The anti-leakage ball valve with the butt joint pipe according to claim 5, wherein the flow guiding piece further comprises a positioning structure, the positioning structure comprises at least one protrusion and at least one groove, the protrusion and the groove are correspondingly arranged, any one of the protrusion and the groove is arranged at the fixing part and/or the flow guiding part, the other one of the protrusion and the groove is arranged at the step, and the flow guiding piece is positioned and installed at the step through the cooperation of the protrusion and the groove.

7. The anti-leakage ball valve with the butt joint pipe according to claim 1, wherein the butt joint pipe comprises a butt joint part and a connecting part, the butt joint channel is formed in the butt joint part, the connecting part is positioned on the periphery of the butt joint part and forms a circle of groove with the outer wall of the butt joint part, and the guiding-out piece is connected with the butt joint pipe in a mode of sleeving the butt joint part and being clamped in the circle groove.

8. The leak-proof ball valve with a docking tube of claim 7, further comprising at least one mounting assembly, the mounting assembly comprising a mating member, the mating member being connected to an exterior of the lead-out member, the docking tube being threadably connected to the lead-out member by the connection portion and the mating member.

9. The anti-leakage ball valve with a butt joint pipe according to claim 8, wherein the mounting assembly further comprises a bearing, the connecting piece is mounted on an outer ring of the bearing, the bearing is sleeved on the guiding-out piece, one end of the butt joint pipe away from the guiding-out piece deviates from the extending direction of the guiding-out channel, and the butt joint pipe can rotate by being matched with the bearing by taking the axis of the guiding-out piece as a rotation center.

10. A leak-proof ball valve detachably sealingly connected to at least one pair of connection pipes, said connection pipes having a connection passage, said leak-proof ball valve comprising:

the valve body comprises a flow control part, an introduction part and at least one discharge part, the flow control part is arranged between the introduction part and the discharge part, the introduction part is provided with an introduction channel, the discharge part is provided with a discharge channel, the flow control part can be used for communicating or blocking the introduction channel and the discharge channel, the butt joint pipe is detachably and hermetically connected with the discharge part, and the butt joint channel is communicated with the discharge channel when the butt joint pipe is in sealed connection with the discharge part;

at least one leakage prevention assembly mounted to the lead-out channel, the leakage prevention assembly comprising:

the guide piece is arranged at a preset position of the guide-out channel and is provided with at least one guide space, at least one guide inlet and at least one outer discharge port, the guide inlet and the outer discharge port are communicated with the guide space, the guide space is communicated with the guide-out channel through the guide inlet, the guide piece comprises a guide part and a blocking part, the blocking part is formed by extending the guide part, and the blocking part and the guide part form the guide space;

the size of the connecting channel is not smaller than that of the guide part, the guide space is communicated with the connecting channel through the outer discharge port, the size of the opening and closing port is matched with the blocking part, the leakage prevention part is movably arranged on the periphery of the guide part and is in sealing connection with the inner wall of the guide out channel, the blocking part is arranged to be capable of sealing and blocking the opening when the guide out channel and the guide in channel are blocked by the flow control part and the butt joint pipe is detached from the guide out channel, and the leakage prevention part can be pushed by the butt joint pipe inserted into the guide out channel to move along the outer surface of the guide out channel so that the blocking part extends out of the opening and closing port through the connecting channel, and at the moment, the guide space is communicated with the butt joint channel through the outer discharge port;

at least one elastic piece, the elastic piece is installed in the piece that prevents letting out, the elastic piece is set up can prevent letting out the piece by the butt joint pipe promotes and moves the time take place elastic deformation, just prevent letting out the piece can be when the butt joint pipe with the deriving piece is detached receive the elasticity effect of elastic piece and reset in order to with the jam portion mutually support in order to block up the mouth that opens and shuts.