Passenger train water supply connector with water supply switch function

Abstract

The invention relates to the technical field of passenger train water feeding, in particular to a passenger train water feeding connector with a water feeding switch function, which comprises a connector pipe body, the interior of the connector pipe body is divided into two independent cavities along the long axis direction of the connector pipe body, a water pipe connector assembly is arranged at one end of the connector pipe body, and a train water filling nozzle holding assembly is arranged at the other end of the connector pipe body. A medium outlet and a medium inlet are formed in the side walls, close to each other, of the two cavities respectively, the medium outlet is communicated with a flow channel of the water pipe connector assembly, the medium inlet is communicated with a flow channel of the train water filling nozzle enclasping assembly, and a movable operating valve wrapping the medium outlet and the medium inlet is installed on the connector pipe body in a sealed mode. The movable operating valve is used for moving along the connector pipe body and enabling the medium outlet and the medium inlet to be communicated or disconnected. The device has the advantages that the device can be conveniently and quickly butted with a water pipe and a train water filling nozzle, and meanwhile, flexible switching between a water feeding state and a pause state can be realized through operation of the movable operating valve.

Description

Technical Field

[0001] The invention relates to the technical field of water supply for passenger trains, and in particular to a water supply joint for passenger trains with a water supply switch function. Background Art

[0002] Each carriage of a high-speed train is equipped with a water tank and a dedicated water inlet. After the train arrives at the station, the water filling process is often done manually. Generally, the train water inlet is connected to the water faucet between tracks through a water supply hose, and the water supply faucet is controlled to complete the water filling operation with the train. One end of the water supply hose is connected to the water faucet, and the other end is provided with a water supply joint that matches the train water inlet.

[0003] At present, conventional water supply joints are not equipped with switch mechanisms, that is, the water injection switch is realized by controlling the water valve at the water supply tap, especially the existing old water supply taps. When injecting water, it is necessary to manually drag the water supply joint and the water supply hose to the water injection port of the bus, manually connect and tighten the water supply joint and the water injection port, and then manually move to the water supply tap to open the water valve. It is often necessary for staff to go back and forth between the water injection port of the bus and the water supply tap, which is troublesome to operate. At the same time, in case of emergency, it is impossible to switch the water injection in time. Even some intelligent water supply taps currently installed do not have a switch mechanism at the water supply joint, and the water supply operation generally needs to be carried out with the help of remote control. If there is a failure of electrical accessories, the water injection switch operation cannot be carried out in time.

[0004] Based on this, it is necessary to develop a passenger train water supply connector with a water supply switch function to overcome the above technical problems. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a water supply connector for a passenger train with a water supply switch function, which effectively overcomes the defects of the prior art.

[0006] The technical solution of the present invention to solve the above technical problems is as follows:

[0007] A passenger train water supply joint with a water supply switch function comprises a joint tube body, the interior of the joint tube body is divided into two independent cavities along its long axis direction, one end of the joint tube body is provided with a water pipe joint assembly, the other end of the joint tube body is provided with a train water filling port clamping assembly, side walls of the two cavities close to each other are respectively provided with a medium outlet and a medium inlet, the medium outlet is communicated with a flow channel of the water pipe joint assembly, the medium inlet is communicated with a flow channel of the train water filling port clamping assembly, a movable operating valve component covering the medium outlet and the medium inlet is sealed on the joint tube body, the movable operating valve component is used to move along the joint tube body and connect or disconnect the medium outlet and the medium inlet.

[0008] On the basis of the above technical solutions, the present invention can be further improved as follows.

[0009] Furthermore, limiting rings are respectively provided at positions on the side wall of the above joint pipe body close to both ends, and the above-mentioned mobile control valve member is arranged between the two above-mentioned limiting rings.

[0010] Furthermore, the above-mentioned mobile control valve member includes a control sleeve. The control sleeve is sleeved outside the above joint pipe body, and annular seals that are in sealed contact with the surface of the above joint pipe body are respectively embedded on the inner sides of both ends. An annular cavity is recessed on the inner wall of the control sleeve. The control sleeve can move along the joint pipe body to be respectively close to or in contact with the above-mentioned limiting rings at both ends, so that the above-mentioned medium outlet and medium inlet are communicated with the annular cavity, or one end inner wall of the control sleeve closes the above-mentioned medium outlet.

[0011] Furthermore, the above water pipe joint assembly includes a clamping sleeve. The outer surface of one end of the above joint pipe body is set as a conical surface that is easy for a water pipe to be inserted. A first external thread is provided between the conical surface and the limiting ring close to it. The inner surface of one end of the clamping sleeve is provided with an internal thread. One end of the clamping sleeve is screwed onto the first external thread at one end of the joint pipe body. A ring groove is provided on the inner surface of the other end of the clamping sleeve corresponding to the position of the conical surface. Spiral engaging groove lines are respectively provided on the surfaces of the conical surface and the ring groove.

[0012] Furthermore, the part of the above joint pipe body corresponding to the position between the first external thread and the limiting ring is set as a smooth abutting part. On the relative two sides of one end of the clamping sleeve close to the end, first screw holes that penetrate it radially are respectively provided, and first set screws that abut against the above-mentioned abutting part are respectively screwed in the first screw holes.

[0013] Furthermore, the above train water injection port clamping assembly includes a connecting sleeve, an outer rubber cylinder and a deformable inner rubber sleeve. One end of the connecting sleeve is open, and an internal thread through hole is provided through the middle of the other end. A second external thread is provided on the outer surface of the other end of the above joint pipe body. The other end of the connecting sleeve is screwed onto the second external thread. One end of the outer rubber cylinder extends into the open end of the connecting sleeve, and the end is close to the inner wall of the other end of the connecting sleeve. One end of the outer rubber cylinder is fixedly connected to the inner wall of the connecting sleeve. One end of the inner rubber sleeve is provided with an outwardly turned limiting flange. The inner rubber sleeve is arranged in the outer rubber cylinder. The limiting flange is embedded between one end of the outer rubber cylinder and the inner wall of the other end of the connecting sleeve. The other end of the inner rubber sleeve is fixedly connected to the inner wall of the other end of the outer rubber cylinder. An annular gap is formed between the outer rubber cylinder and the inner rubber sleeve.

[0014] Furthermore, a limiting ring is integrally provided on the inner surface of the end of the other end of the above outer rubber cylinder, and the end of the other end of the inner rubber sleeve abuts against the limiting ring.

[0015] Furthermore, an annular connecting portion is integrally provided at one end of the connecting sleeve. The connecting portion abuts against the limiting ring. Second screw holes radially penetrating through the connecting portion are respectively provided on opposite sides of the connecting portion, and second set screws abutting against the joint pipe body are respectively screwed into the second screw holes.

[0016] Furthermore, the inner rubber sleeve is a conical sleeve body, and its conical bottom end is far away from the joint pipe body.

[0017] Furthermore, a plurality of medium outlets and medium inlets are respectively provided, and are evenly spaced along the circumferential direction of the joint pipe body.

[0018] The beneficial effects of the present invention are as follows: the structure design is simple and reasonable, which can be conveniently and quickly docked with a water pipe and a train water injection port. At the same time, the flexible switching between the two states of water supply and pause can be realized by operating the mobile control valve member. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 FIG. is a schematic structural diagram of a water supply joint for a passenger train with a water supply switch function according to the present invention;

[0020] Figure 2 FIG. is a cross-sectional schematic diagram of a water supply joint for a passenger train with a water supply switch function according to the present invention.

[0021] In the drawings, the list of components represented by each reference numeral is as follows:

[0022] 1. Joint pipe body; 2. Mobile control valve member; 11. Cavity; 12. Water pipe joint assembly; 13. Train water injection port clamping assembly; 14. Limiting ring; 15. Conical surface; 16. Stopping portion; 21. Control sleeve; 22. Sealing member; 111. Medium outlet; 112. Medium inlet; 121. Clamping pipe sleeve; 131. Connecting sleeve; 132. Outer rubber cylinder; 133. Inner rubber sleeve; 211. Ring cavity; 1211. Ring groove; 1312. Connecting portion; 1322. Limiting ring; 1331. Limiting flange. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The principles and features of the present invention will be described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0024] Embodiment

[0025] As Figure 1 and 2As shown in the figure, the water filling joint of the passenger train with the function of water filling switch in this embodiment includes a joint pipe body 1. The inside of the joint pipe body 1 is divided into two independent cavities 11 along its long axis direction. One end of the joint pipe body 1 is provided with a water pipe joint assembly 12, and the other end of the joint pipe body 1 is provided with a train water filling port clamping assembly 13. Medium outlets 111 and medium inlets 112 are respectively opened on the side walls of the two cavities 11 close to each other. The medium outlet 111 is communicated with the flow channel of the water pipe joint assembly 12, and the medium inlet 112 is communicated with the flow channel of the train water filling port clamping assembly 13. A movable control valve member 2 that covers the medium outlet 111 and the medium inlet 112 is sealed and installed on the joint pipe body 1. The movable control valve member 2 is used to move along the joint pipe body 1 and make the medium outlet 111 and the medium inlet 112 communicate or disconnect.

[0026] When the water filling joint of the passenger train with the function of water filling switch in this embodiment is in use, it is installed at one end of the water filling hose (specifically, the water pipe joint assembly 12 is assembled and communicated with one end of the water filling hose). Before water injection, the movable control valve member 2 can be operated at the water filling faucet to disconnect the medium outlet 111 and the medium inlet 112, and the water valve of the water filling faucet is opened. Then, the water filling hose is dragged to the passenger car water filling port and docked at the train water filling port through the train water filling port clamping assembly 13 and tightened manually. Next, the movable control valve member 2 can be operated to move, so that the medium outlet 111 and the medium inlet 112 are communicated, and water can be injected into the water tank of the passenger car through the water filling port. After the water injection is completed, the movable control valve member 2 can be directly operated to disconnect the medium outlet 111 and the medium inlet 112, stop the water injection, and manually pull out the train water filling port clamping assembly 13 from the water filling port without first shutting down the water valve at the water filling faucet. The whole operation process does not require the staff to move back and forth. The overall structure design is simple and reasonable, and it can be conveniently and quickly docked with the water pipe and the train water filling port. At the same time, the operation of the movable control valve member can realize the flexible switching between the two states of water filling and suspension.

[0027] As a preferred embodiment, limiting rings 14 are respectively provided at positions on the side wall of the joint pipe body 1 close to both ends, and the movable control valve member 2 is arranged between the two limiting rings 14.

[0028] In the above embodiment, the two limiting rings 14 limit the maximum moving stroke of the movable control valve member 2 in the long axis direction of the joint pipe body 1, ensuring the good movement of the movable control valve member 2.

[0029] As a preferred embodiment, the above-mentioned mobile control valve member 2 includes a control sleeve 21. The control sleeve 21 is sleeved outside the joint pipe body 1, and annular seals 22 that are in sealed contact with the surface of the joint pipe body 1 are respectively embedded on the inner sides of both ends thereof. A ring cavity 211 is recessed on the inner wall of the control sleeve 21. The control sleeve 21 can move along the joint pipe body 1 to be respectively close to or in contact with the limiting rings 14 at both ends, so that the medium outlet 111 and the medium inlet 112 communicate with the ring cavity 211, or one end inner wall of the control sleeve 21 closes the medium outlet 111.

[0030] In the above-mentioned embodiment, by moving the control sleeve 21 along the long axis direction of the joint pipe body 1, the ring cavity 211 can be respectively communicated with the medium outlet 111 and the medium inlet 112, or one end of the control sleeve 21 can be closed to block the medium outlet 111 to stop water injection. The operation is relatively simple and convenient.

[0031] As a preferred embodiment, the above-mentioned water pipe joint assembly 12 includes a clamping sleeve 121. The outer surface of one end of the joint pipe body 1 is provided with a tapered surface 15 that is easy for a water pipe to be inserted. A first external thread is provided between the tapered surface 15 and the adjacent limiting ring 14. The inner surface of one end of the clamping sleeve 121 is provided with an internal thread. One end of the clamping sleeve 121 is screwed onto the first external thread at one end of the joint pipe body 1. A ring groove 1211 is provided on the inner surface of the other end of the clamping sleeve 121 corresponding to the tapered surface 15. Spiral engaging groove lines a are respectively provided on the surfaces of the tapered surface 15 and the ring groove 1211.

[0032] In the above-mentioned embodiment, when the upper water hose is assembled with one end of the joint pipe body 1, first, the clamping sleeve 121 is sleeved on one end of the upper water hose. Then, one end of the upper water hose is extruded and sleeved outside the tapered surface 15. Next, the clamping sleeve 121 is moved to the outside of the tapered surface 15, and then the clamping sleeve 121 is rotated so that the internal thread at one end thereof is screwed with the first external thread at one end of the joint pipe body 1 until it is screwed in. During the screwing-in process, one end of the upper water hose will be extruded and clamped between the tapered surface 15 and the ring groove 1211 of the clamping sleeve 121. Among them, the design of the engaging groove lines can enable a part of the upper water hose to be embedded in the engaging groove lines under the extrusion action, so that the upper water hose is tightly connected to one end of the joint pipe body 1.

[0033] As a preferred embodiment, the part of the joint pipe body 1 corresponding to the position between the first external thread and the limiting ring 14 is provided with a smooth abutting portion 16. Opposite sides of one end of the clamping sleeve 121 close to the end are respectively provided with first screw holes that penetrate it radially, and first set screws that abut against the abutting portion 16 are respectively screwed in the first screw holes.

[0034] In the above embodiments, after the clamping sleeve 121 is screwed tightly, the first set screw in the first screw hole is tightened so that the first set screw abuts against the surface of the abutting portion 16, further strengthening the firmness of the assembly of the clamping sleeve 121 at one end of the joint pipe body 1.

[0035] As a preferred embodiment, the above-mentioned train water injection port clamping assembly 13 includes a connecting sleeve 131, an outer rubber cylinder 132 and a deformable inner rubber sleeve 133. One end of the connecting sleeve 131 is open, and a threaded through hole is provided in the middle of the other end. The outer surface of the other end of the joint pipe body 1 is provided with a second external thread. The other end of the connecting sleeve 131 is screwed onto the second external thread. One end of the outer rubber cylinder 132 extends into the open end of the connecting sleeve 131, and the end is close to the inner wall of the other end of the connecting sleeve 131. One end of the outer rubber cylinder 132 is fixedly connected to the inner wall of the connecting sleeve 131. One end of the inner rubber sleeve 133 is provided with an outward-turned limiting flange 1331. The inner rubber sleeve 133 is arranged in the outer rubber cylinder 132. The limiting flange 1331 is embedded between one end of the outer rubber cylinder 132 and the inner wall of the other end of the connecting sleeve 131. The other end of the inner rubber sleeve 133 is fixedly connected to the inner wall of the other end of the outer rubber cylinder 132. A ring gap is formed between the outer rubber cylinder 132 and the inner rubber sleeve 133.

[0036] In the above embodiments, the outer rubber cylinder 132 is a rigid cylinder body, and one end is fixedly connected to the inner wall of the open end of the connecting sleeve 131. The limiting flange 1331 is tightly embedded and assembled through the gap formed between one end of the outer rubber cylinder 132 and the inner wall of the other end of the connecting sleeve 131. Then, in cooperation with the fixed connection between the other end of the inner rubber sleeve 133 and the inner wall of the other end of the outer rubber cylinder 132, the inner rubber sleeve 133 is firmly installed inside the outer rubber cylinder 132. Among them, the material of the inner rubber sleeve 133 is relatively soft. When the inner rubber sleeve 133 is expanded manually outside the water injection port, the inner rubber sleeve 133 is extruded and deformed outward, and is tightly held outside the water injection port under the restriction of the outer rubber cylinder 132. The structural design is relatively simple and reasonable.

[0037] In this embodiment, a limiting ring 1322 is integrally provided on the inner surface of the end of the other end of the outer rubber cylinder 132, and the end of the other end of the inner rubber sleeve 133 abuts against the limiting ring 1322. This structural design restricts both ends of the inner rubber sleeve 133 and prevents it from easily detaching.

[0038] As a preferred embodiment, an annular connecting portion 1312 is integrally provided at the end of one end of the connecting sleeve 131. The connecting portion 1312 abuts against the limiting ring 14. Second screw holes radially penetrating through the connecting portion 1312 are respectively provided on opposite sides of the connecting portion 1312, and second set screws abutting against the joint pipe body 1 are respectively screwed into the second screw holes.

[0039] In the above-described embodiments, after the connecting sleeve 131 is screwed onto the other end of the joint pipe body 1, by tightening the second set screw in the second screw hole, the second set screw abuts against the outer surface of the other end of the joint pipe body 1, further strengthening the firmness of the assembly of the connecting sleeve 131 at the other end of the joint pipe body 1.

[0040] In this embodiment, the above inner rubber sleeve 133 is a conical sleeve body, and its conical bottom end is away from the above joint pipe body 1. The shape of the inner rubber sleeve 133 is adapted to the shape of the water injection port (conical), which is convenient for inserting and sleeving.

[0041] In this embodiment, a plurality of the above medium outlets 111 and medium inlets 112 are respectively provided and are evenly spaced along the circumferential direction of the above joint pipe body 1. This design ensures that during the water injection process, water flows evenly through the joint pipe body 1 from multiple circumferential directions.

[0042] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0043] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0044] In the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the horizontal height of the first feature is less than that of the second feature.

[0046] In the description of this specification, the description with reference to terms such as "an embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0047] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A passenger train water supply connector with water supply switch function, characterized in that: The invention comprises a joint pipe body (1), the interior of the joint pipe body (1) being divided into two independent cavities (11) along its long axis direction, one end of the joint pipe body (1) being provided with a water pipe joint assembly (12), and the other end of the joint pipe body (1) being provided with a train water injection port clamping assembly (13), and the side walls of the two cavities (11) close to each other are respectively provided with a medium outlet (111) and a medium inlet (112), the medium outlet (111) being connected to the flow channel of the water pipe joint assembly (12), and the medium inlet (112) being connected to the flow channel of the train water injection port clamping assembly (13), and the joint pipe body (1) being sealed with a movable control valve component (2) covering the medium outlet (111) and the medium inlet (112), the movable control valve component (2) being used to move along the joint pipe body (1) and to connect or disconnect the medium outlet (111) and the medium inlet (112).

2. A passenger train water supply connector with water supply switch function according to claim 1, characterized in that: Positions of the side walls of the joint pipe body (1) close to both ends are respectively provided with limiting rings (14), and the movable control valve component (2) is arranged between the two limiting rings (14).

3. A passenger train water supply connector with water supply switch function according to claim 2, characterized in that: The movable control valve component (2) comprises a control sleeve (21), the control sleeve (21) being sleeved outside the joint pipe body (1), and annular sealing components (22) are respectively embedded on the inner sides of both ends of the control sleeve and are in sealing contact with the surface of the joint pipe body (1). An annular cavity (211) is recessed on the inner wall of the control sleeve (21), and the control sleeve (21) can be moved along the joint pipe body (1) to approach or contact the limiting rings (14) at both ends, so that the medium outlet (111) and the medium inlet (112) are connected to the annular cavity (211), or the inner wall of one end of the control sleeve (21) closes the medium outlet (111).

4. A passenger train water supply connector with water supply switch function according to claim 2, characterized in that: The water pipe joint assembly (12) comprises a clamping sleeve (121), the outer surface of one end of the joint pipe body (1) is provided as a conical surface (15) for easy insertion of a water pipe, a first external thread is provided between the conical surface (15) and a limiting ring (14) close thereto, an internal thread is provided on the inner surface of one end of the clamping sleeve (121), one end of the clamping sleeve (121) is screwed into the first external thread at one end of the joint pipe body (1), an annular groove (1211) is provided on the inner surface of the other end of the clamping sleeve (121) at a position corresponding to the conical surface (15), and the surfaces of the conical surface (15) and the annular groove (1211) are respectively provided with spiral bite groove lines.

5. A passenger train water supply connector with water supply switch function according to claim 4, characterized in that: The joint pipe body (1) is provided with a stop portion (16) having a smooth surface at a portion between the first external thread and the limiting ring (14), and one end of the clamping sleeve (121) is provided with first screw holes radially penetrating therethrough on opposite sides close to the end, and the first screw holes are respectively screwed with first fixing screws that abut against the stop portion (16).

6. A passenger train water supply connector with water supply switch function according to claim 2, characterized in that: The train water injection port clamping assembly (13) comprises a connecting sleeve (131), an outer rubber sleeve (132) and a deformable inner rubber sleeve (133); one end of the connecting sleeve (131) is open, and the middle of the other end is provided with an internal threaded through hole; the outer surface of the other end of the joint pipe body (1) is provided with a second external thread; the other end of the connecting sleeve (131) is screwed into the second external thread; one end of the outer rubber sleeve (132) extends into the open end of the connecting sleeve (131), and the end is close to the inner wall of the other end of the connecting sleeve (131); One end of the tube (132) is connected and fixed to the inner wall of the connecting sleeve (131), one end of the inner rubber sleeve (133) is provided with an outward-turned limiting flange (1331), the inner rubber sleeve (133) is arranged in the outer rubber tube (132), the limiting flange (1331) is embedded between one end of the outer rubber tube (132) and the inner wall of the other end of the connecting sleeve (131), the other end of the inner rubber sleeve (133) is connected and fixed to the inner wall of the other end of the outer rubber tube (132), and an annular gap is formed between the outer rubber tube (132) and the inner rubber sleeve (133).

7. A passenger train water supply connector with water supply switch function according to claim 6, characterized in that: A limiting ring (1322) is integrally provided on the inner surface of the other end of the outer rubber cylinder (132), and the other end of the inner rubber sleeve (133) abuts against the limiting ring (1322).

8. A passenger train water supply connector with water supply switch function according to claim 6, characterized in that: An annular connecting portion (1312) is integrally provided at one end of the connecting sleeve (131), and the connecting portion (1312) abuts against the limiting ring (14). Second screw holes radially penetrating therethrough are respectively provided on opposite sides of the connecting portion (1312), and second fixing screws abutting against the joint pipe body (1) are respectively screwed into the second screw holes.

9. A passenger train water supply connector with water supply switch function according to claim 6, characterized in that: The inner rubber sleeve (133) is a conical sleeve, and the bottom end of the cone is away from the joint pipe body (1).

10. A passenger train water supply connector with water supply switch function according to any one of claims 1 to 9, characterized in that: The medium outlets (111) and the medium inlets (112) are respectively provided in plurality and are evenly spaced and distributed along the circumference of the joint pipe body (1).

Images