A sealing and dustproof device for water injection port of passenger car

Abstract

The invention discloses a sealing and dustproof device for a water injection port of a passenger car, which ensures that the water injection pipe is not frozen and not polluted by dust, and ensures that the water injection pipe is clean and hygienic; by arranging a clamp, it is convenient to install a cover plate at a later time, and it is also convenient to disassemble; the inner walls of the first arc-shaped connecting plate and the second arc-shaped connecting plate are provided with anti-skid pads and convex strips to improve the anti-skid property of the clamp and improve the stability; the hinged reset mechanism facilitates the opening and closing of the cover plate, and is used to apply elastic force to the cover plate in the direction of opening and closing; the limit plates on the connecting flanges on both sides limit the flipping angle of the cover plate, and prevent the torsion spring from being excessively deformed due to the flipping transition, causing the hinged reset mechanism to fail; the locking block 1 on the inner wall of the lever is attracted to the locking block 2 when the cover plate is closed, so as to prevent the cover plate from being accidentally opened easily; the opening and closing of the bottom of the cover plate and the sealing sheet provided with a cross-shaped drain port facilitate the discharge of internal water vapor, balance the internal and external air pressures when the internal air pressure is too high, and prevent the internal high air pressure from pushing the cover plate open.

Description

Technical Field

[0001] The invention relates to the technical field of drainage sealing, and in particular to a sealing and dustproof device for a water injection port of a passenger car. Background Art

[0002] In order to ensure the supply of water on the train, passenger cars are usually equipped with water filling ports so that the water can be quickly replenished in the short time when stopping at the station. Railway passenger cars operate in a wide area, and the climate, temperature, and air flow fluctuate greatly. To ensure smooth operation at each water filling point, the water nozzles are not frozen, not polluted by dust, and the water nozzles are kept clean and hygienic. Therefore, dust covers and cover plates that are easy to open and lock are generally designed at the water filling points. However, the existing dust covers and cover plates do not have a reset mechanism, which leads to frequent forgetting to close the dust covers and cover plates. In addition, the dust covers and cover plates seal the water filling ports. Sometimes the internal air pressure is higher than the external air pressure, which will push the dust covers and cover plates open, posing a safety hazard. Summary of the invention

[0003] The purpose of the present invention is to provide a sealing and dustproof device for a water injection port of a passenger car in view of the deficiencies in the prior art.

[0004] The technical solution of the present invention to solve the above problem is: a sealing dustproof device for a water injection port of a passenger car, comprising a clamp sleeved on a water injection pipe, a cover plate which can be opened and closed and is connected to the clamp through a hinged reset mechanism;

[0005] The hoop comprises a first arc-shaped connecting plate and a second arc-shaped connecting plate, the inner wall of which is in contact with the water injection pipe, one end of the first arc-shaped connecting plate and the second arc-shaped connecting plate are hingedly connected by a hinge, and the other ends of the first arc-shaped connecting plate and the second arc-shaped connecting plate are respectively provided with connecting flanges, and the two connecting flanges are connected by bolts and nuts;

[0006] The hinged reset mechanism includes a torsion spring and two rings which are sleeved on the bolt and arranged between the two connecting flanges. The two rings are respectively connected to one end of the cover plate through a connecting rod. The limit rod at one end of the torsion spring is fixed to the connecting flange on one side, and the limit rod at the other end is fixed to the cover plate.

[0007] The cover plate is a columnar structure with an opening at the top, a raised portion is provided at the bottom of the cover plate, an opening is provided at the center of the raised portion, a sealing mechanism is provided inside the cover plate, the sealing mechanism includes an annular sealing ring arranged outside the raised portion, a sealing sheet arranged on the upper part of the inner wall of the annular sealing ring, and a cross-shaped drainage port is provided on the sealing sheet.

[0008] Furthermore, limiting plates are provided on the connecting flanges on both sides.

[0009] Furthermore, the limit plate is used to limit the flipping angle of the cover plate, which is 0-135°.

[0010] Furthermore, when the cover plate is covered on the water injection port, the height of the cover plate is slightly higher than the height of the water injection port.

[0011] Furthermore, a lever is provided at one end of the cover plate which is symmetrical to the hinged reset mechanism.

[0012] Furthermore, the inner wall of the lever is provided with a locking block 2 which cooperates with the main water pipe or the clamp.

[0013] Furthermore, the inner walls of the first arc-shaped connecting plate and the second arc-shaped connecting plate are provided with convex strips for limiting, and the outer wall of the water injection pipe is provided with grooves matching with the convex strips.

[0014] Furthermore, anti-slip pads are provided on the inner walls of the first arc-shaped connecting plate and the second arc-shaped connecting plate.

[0015] The present invention has the beneficial effects:

[0016] The present invention provides a sealing and dustproof device for the water injection port of a passenger car, which ensures that the water injection pipe is not frozen and not contaminated by dust, and ensures that the water injection pipe is clean and hygienic; by arranging a clamp, it is convenient to install the cover plate at a later time, and it is also convenient to disassemble; the inner walls of the first arc-shaped connecting plate and the second arc-shaped connecting plate are provided with anti-skid pads and convex strips to improve the anti-skid property of the clamp and improve the stability; the hinged reset mechanism facilitates the opening and closing of the cover plate, and is used to apply elastic force to the cover plate in the direction of opening and closing; the limit plates on the connecting flanges on both sides limit the flipping angle of the cover plate, and prevent the torsion spring from causing excessive deformation due to the flipping transition and causing the hinged reset mechanism to fail; the inner wall of the lever is attracted by the locking block when the cover plate is closed, so as to prevent the cover plate from being accidentally opened easily; the opening and closing of the bottom of the cover plate and the sealing sheet with a cross-shaped drain port facilitate the discharge of internal water vapor, balance the internal and external air pressure when the internal air pressure is too high, and prevent the internal high air pressure from pushing the cover plate open. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure when the cover is opened;

[0018] Figure 2 This is a schematic diagram of the structure when the cover is closed and the cross-shaped drain port is opened;

[0019] Figure 3 This is a schematic diagram of the connection structure between the clamp and the water injection pipe in Example 1;

[0020] Figure 4 This is a schematic diagram of the connection structure between the clamp and the water injection pipe in Example 2;

[0021] Figure 5 It is a structural schematic diagram of the sealing mechanism;

[0022] In the figure: 1-holding hoop, 2-cover plate, 3-first arc-shaped connecting plate, 4-second arc-shaped connecting plate, 5-hinge, 6-connecting flange, 7-bolt, 8-anti-slip gasket, 9-torsion spring, 10-collar, 11-limiting plate, 12-protrusion, 13-opening, 14-annular sealing ring, 15-sealing sheet, 16-cross-shaped drain outlet, 17-shift lever, 18-, 19-locking block II, 20-water injection pipe, 21-convex strip, 22-groove. DETAILED DESCRIPTION

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0024] Embodiment 1:

[0025] A sealing and dustproof device for a water injection port of a passenger car comprises a clamp sleeved on a water injection pipe, and a cover plate which is openably arranged at the water injection port and connected to the clamp through a hinged reset mechanism;

[0026] The clamp comprises a first arc-shaped connecting plate and a second arc-shaped connecting plate, the inner wall of which is in contact with the water injection pipe. One end of the first arc-shaped connecting plate and the second arc-shaped connecting plate are hingedly connected by a hinge. The other ends of the first arc-shaped connecting plate and the second arc-shaped connecting plate are respectively provided with connecting flanges. The two connecting flanges are connected by bolts and nuts, which is convenient for later installation of the cover plate and also convenient for disassembly. The inner walls of the first arc-shaped connecting plate and the second arc-shaped connecting plate are provided with anti-skid pads to improve the anti-skid property of the clamp and improve the stability.

[0027] The hinge reset mechanism includes a torsion spring and two rings sleeved on the bolt and arranged between the two connecting flanges. The two rings are respectively connected to one end of the cover plate through a connecting rod. The limit rod at one end of the torsion spring is fixed to the connecting flange on one side, and the limit rod at the other end is fixed to the cover plate. The hinge reset mechanism is used to apply elastic force to the cover plate in the direction of opening closing. The connecting flanges on both sides are provided with limit plates to limit the flipping angle of the cover plate, prevent the torsion spring from causing excessive deformation due to the flipping transition, causing the hinge reset mechanism to fail, and limit the maximum flipping of the cover plate to 135°;

[0028] The cover plate is a columnar structure with an opening at the top. When the cover plate is covered at the water injection port, the height of the cover plate is slightly higher than the height of the water injection port. A protrusion is provided at the bottom of the cover plate, and an opening is provided at the center of the protrusion. A sealing mechanism is provided inside the cover plate, and the sealing mechanism includes an annular sealing ring arranged outside the protrusion, and a sealing sheet arranged on the upper part of the inner wall of the annular sealing ring. A cross-shaped drain port is provided on the sealing sheet, and the cross-shaped drain port can only be opened outward. The opening and closing of the bottom of the cover plate and the sealing sheet with the cross-shaped drain port facilitate the discharge of internal water vapor, balance the internal and external air pressure when the internal air pressure is too high, and prevent the internal high air pressure from pushing the cover plate open;

[0029] A lever is provided at one end of the cover plate symmetrical to the hinged reset mechanism, and a locking block 2 cooperating with the main water pipe or the clamp is provided on the inner wall of the lever to prevent the cover plate from being accidentally opened easily.

[0030] Embodiment 2:

[0031] The difference between this embodiment and embodiment 1 is that convex strips for limiting are provided on the inner walls of the first arc-shaped connecting plate and the second arc-shaped connecting plate, and grooves matching with the convex strips are provided on the outer wall of the water injection pipe, so as to further improve the anti-slip property and stability of the clamp.

[0032] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A sealing and dustproof device for a water injection port of a passenger car, characterized in that: The invention comprises a clamp sleeved on the water injection pipe, a cover plate which can be opened and closed and is arranged at the water injection port and is connected to the clamp by a hinged reset mechanism; the clamp comprises a first arc-shaped connecting plate and a second arc-shaped connecting plate whose inner wall is in contact with the water injection pipe, one end of the first arc-shaped connecting plate and the second arc-shaped connecting plate are hingedly connected by a hinge, and the other ends of the first arc-shaped connecting plate and the second arc-shaped connecting plate are respectively provided with connecting flanges, and the two connecting flanges are connected by bolts and nuts; the hinged reset mechanism comprises a torsion spring and two rings which are sleeved on the bolts and arranged between the two connecting flanges, and the two rings are respectively connected by A connecting rod is connected to one end of the cover plate, a limiting rod at one end of the torsion spring is fixed on a connecting flange on one side, and a limiting rod at the other end is fixed on the cover plate; the cover plate is a columnar structure with an opening at the top, a raised portion is provided at the bottom of the cover plate, an opening is provided at the center of the raised portion, a sealing mechanism is provided inside the cover plate, the sealing mechanism includes an annular sealing ring arranged outside the raised portion, a sealing sheet arranged on the upper part of the inner wall of the annular sealing ring, and a cross-shaped exhaust port is provided on the sealing sheet; limiting plates are provided on the connecting flanges on both sides; a lever is provided at one end of the cover plate that is symmetrical to the hinged reset mechanism.

2. A passenger car water injection port sealing and dustproof device as claimed in claim 1, characterized in that: The limit plate is used to limit the flipping angle of the cover plate to 0-135°.

3. A passenger car water injection port sealing and dustproof device as claimed in claim 1, characterized in that: When the cover plate is covered at the water injection port, the height of the cover plate is slightly higher than the height of the water injection port.

4. A passenger car water injection port sealing and dustproof device as claimed in claim 1, characterized in that: A locking block 1 is provided on the inner wall of the lever, and a locking block 2 cooperating with the locking block 1 is provided on the water injection pipe or the clamp.

5. A passenger car water injection port sealing and dustproof device as claimed in claim 1, characterized in that: The inner walls of the first arc-shaped connecting plate and the second arc-shaped connecting plate are provided with convex strips for limiting position, and the outer wall of the water injection pipe is provided with grooves matching with the convex strips.

6. A passenger car water injection port sealing and dustproof device according to claim 1 or 5, characterized in that: Anti-slip pads are provided on the inner walls of the first arc-shaped connecting plate and the second arc-shaped connecting plate.

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