Reducer joint for flushing water pipe of water tank

Abstract

The utility model discloses a reducing joint for a water tank flushing pipe. The reducing joint comprises a first joint and a second joint, the inner diameter of the first connector is different from that of the second connector, a first inner cavity is formed in the first connector, and a second inner cavity is formed in the second connector. A plurality of first anti-skid teeth are arranged on the outer surface of the first joint in the radial direction to form a first anti-skid tooth array; and a plurality of third anti-skid teeth are arranged on the outer surface of the second joint along the radial direction to form a third anti-skid tooth array. The surfaces of the connectors at the two ends are provided with anti-skid tooth arrays, and when the anti-skid tooth arrays are connected with a water pipe and / or a water tank drainage port, the anti-skid tooth arrays make contact with the inner wall to form a water blocking structure to achieve sealing of the joints. And the outer diameters of the first anti-skid teeth and the third anti-skid teeth at the two ends are gradually increased towards the middle, so that connection with a water pipe or a water tank water outlet is facilitated.

Description

Technical Field

[0001] The embodiments of the utility model belong to the technical field of water pipe joints, and more specifically, relate to a reducer joint for a water tank flushing water pipe. Background Art

[0002] Usually, water tanks are installed on EMUs to provide drinking water for passengers. During long-term use, a large amount of impurities will accumulate in the water tanks and their pipelines, which will affect the water quality and cause blockages in the EMU water tanks, pipelines, and solenoid valves. In order to ensure the safety of drinking water for passengers and further implement the requirements that the water quality of the water tank outlet is free of hardening and impurities, and the water-using equipment operates normally without scale stagnation, it is necessary to deeply rinse and clean the scale in the water tank. At present, when using the upper water pipe to backwash the water tank from the bottom drain port of the EMU water tank upward, in order to prevent the problem of damage to equipment and personal safety caused by the inability to connect the upper water pipe and the bottom drain port of the EMU water tank during the backwashing process, a reducer is needed to connect them.

[0003] At present, most of the reducers on the market are pipes with different diameters at both ends, connected by a transition section in the middle. The Chinese patent with announcement number CN204083627U discloses a new type of injection-molded polyethylene plastic reducer pipe fitting, which belongs to the field of plastic pipe fitting technology and aims to solve the problems of unreasonable overall structural design of existing injection-molded polyethylene (PE) plastic reducer pipe fittings, large resistance coefficient of the pipe fittings themselves, and high energy consumption of system operation. The reducer body it uses is composed of a one-time injection molding of the main pipe section and the branch pipe section connected by a reducer transition section. The inner and outer corners of the connection between the main pipe section and the reducer transition section and the inner and outer corners of the connection between the reducer transition section and the branch pipe section are all smooth transition arc angles. It can solve the connection between two water pipes with different diameters.

[0004] However, the Chinese patent with announcement number CN204083627U does not have relevant connection devices at both ends, which does not meet the requirements of quick installation and quick removal of water tank flushing. There is a risk of falling off under pressure when facing the high-strength water pressure of water tank flushing, causing personal injury to the operator. Therefore, there is an urgent need for a reducer for water tank flushing water pipe, which is used to connect the upper water pipe and the drain port at the bottom of the water tank to flush and clean the inside of the water tank. Utility Model Content

[0005] In view of the above defects or improvement needs of the prior art, the utility model provides a reducer joint for flushing water pipes of water tanks, which uses one end of the two joints to connect the water inlet pipe and the other end to connect the drain outlet of the water tank to flush and clean the water tank. When connecting and disassembling, only simple plugging and unplugging operations are required, thereby realizing quick connection and quick disassembly between the water inlet pipe and the water tank, ensuring the stability of the connection between the water inlet pipe and the drain outlet of the water tank, and avoiding loose connections at the joints, which may cause the connection port to fall off due to high pressure, causing personal injury to the operator and affecting the flushing effect.

[0006] In order to achieve the above-mentioned purpose, the embodiment of the utility model provides a reducer joint for a water tank flushing water pipe, comprising a first joint and a second joint;

[0007] The inner diameters of the first joint and the second joint are different, a first inner cavity is provided inside the first joint, and a second inner cavity is provided inside the second joint;

[0008] The outer surface of the first joint is provided with a plurality of first anti-slip teeth in the radial direction to form a first anti-slip tooth array;

[0009] A plurality of third anti-slip teeth are radially arranged on the outer surface of the second joint to form a third anti-slip tooth array.

[0010] Furthermore, the outer diameter of the first anti-slip tooth is a conical surface, and is annularly arranged on the outer surface of the first joint, and the outer diameter of the first anti-slip tooth gradually increases from the end to the middle connection;

[0011] The outer diameter of the third anti-slip tooth is a conical surface, and is annularly arranged on the outer surface of the second joint. The outer diameter of the third anti-slip tooth gradually increases from the end to the middle connection.

[0012] Furthermore, the first connector and the second connector are connected as one body through an annular plate, and both ends are transparent;

[0013] The outer diameter of the first joint is the same as the outer diameter of the annular plate, and the inner diameter of the second joint is the same as the inner diameter of the annular plate.

[0014] Furthermore, a connecting portion is provided between the first joint and the second joint.

[0015] Furthermore, the connecting portion is funnel-shaped and serves as a buffer when the channel between the first joint and the second joint becomes narrower.

[0016] Furthermore, the connecting portion is of continuous step type, and two adjacent steps are connected by a funnel-shaped tube, which serves as a multiple buffer zone when the channel in the first joint and the second joint becomes narrow.

[0017] Furthermore, the main body of the connecting part is a curved pipe, one end of which is connected to the first joint through a funnel-shaped pipe, and the other end of which is also connected to the second joint through a funnel-shaped pipe, forming buffer zones at the two funnel-shaped pipes.

[0018] Furthermore, a first sub-joint is provided on the first joint, and a second sub-joint is provided on the second joint.

[0019] Furthermore, a plurality of second anti-slip teeth are radially arranged on the outer surface of the first auxiliary joint to form a second anti-slip tooth array, and the outer surface of the second anti-slip teeth is a conical surface;

[0020] A first annular outer cavity is formed between the first sub-joint and the outer surface of the first joint. When the water pipe or the water tank drain outlet is connected, it is selected to be connected to the first joint or the first sub-joint according to its actual size. When connected to the first joint, the water pipe or the water tank drain outlet is placed in the first outer cavity.

[0021] Furthermore, the outer surface of the second auxiliary joint is provided with a plurality of fourth anti-slip teeth along the radial direction to form a fourth anti-slip tooth array, and the outer surface of the fourth anti-slip teeth is a conical surface;

[0022] An annular second outer cavity is formed between the second sub-joint and the outer surface of the second joint. When connecting the water pipe or the water tank drain outlet, the water pipe or the water tank drain outlet is selected to be connected to the second joint or the second sub-joint according to its actual size. When connected to the second joint, the water pipe or the water tank drain outlet is placed in the second outer cavity.

[0023] In general, the above technical solutions conceived by the utility model can achieve the following beneficial effects compared with the prior art:

[0024] 1. The utility model is a reducer for flushing water pipes of water tanks. Anti-skid tooth arrays are provided on the surfaces of both ends of the joints. When connected with the water pipe and / or the water tank drain, they contact with the inner wall to form a water-blocking structure to achieve sealing at the connection. The outer diameters of the first anti-skid teeth and the third anti-skid teeth at both ends gradually increase toward the middle, which is convenient for connection with the water pipe or the water tank drain.

[0025] 2. The utility model is a reducer for flushing water pipes of water tanks. A funnel-shaped connecting portion is arranged at the connection between the first joint and the second joint. When the channels in the joints at both ends become narrower, the water flows in the buffer zone, thereby reducing the buffering force on the reducer and enhancing the buffering force of the reducer.

[0026] 3. The utility model is a reducer for flushing water pipes of water tanks. A first sub-joint is provided on the first joint, and a second sub-joint is provided on the second joint. The two sub-joints enable the reducer to meet the connection requirements of water pipes or water tank drains of more sizes, thereby further enhancing the versatility of the reducer. The two sub-joints are respectively shorter than the first joint and the second joint, and a cavity is provided between them, so that no interference will be caused when the first joint or the second joint is used. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic structural diagram of a reducer for a water tank flushing water pipe in Example 1 of the utility model;

[0028] Figure 2 This is a structural cross-sectional view of a reducer used for a water tank flushing water pipe in Example 1 of the utility model;

[0029] Figure 3 This is a schematic structural diagram of a reducer for a water tank flushing water pipe in Example 2 of the utility model;

[0030] Figure 4 This is a structural cross-sectional view of a reducer used for a water tank flushing water pipe in Example 2 of the utility model;

[0031] Figure 5 This is a schematic structural diagram of a reducer for a water tank flushing water pipe in Example 3 of the utility model;

[0032] Figure 6 This is a structural cross-sectional view of a reducer used for a water tank flushing water pipe in Example 3 of the utility model;

[0033] Figure 7 This is a structural cross-sectional view of a reducer used for a water tank flushing water pipe in Example 4 of the utility model;

[0034] Figure 8 This is a schematic structural diagram of a reducer for a water tank flushing water pipe in Example 5 of the utility model;

[0035] Fig. 9 This is a structural cross-sectional view of a reducer used for a water tank flushing water pipe in Example 5 of the utility model;

[0036] Fig.10 This is a schematic structural diagram of a reducer for a water tank flushing water pipe in Example 6 of the utility model;

[0037] Fig.11 This is a structural cross-sectional view of a reducer used for a water tank flushing water pipe in Example 6 of the utility model.

[0038] In all the drawings, the same figure marks represent the same technical features, specifically: 1-first joint, 11-first inner cavity, 12-first anti-slip tooth, 13-first auxiliary joint, 14-second anti-slip tooth, 15-first outer cavity, 2-second joint, 21-second inner cavity, 22-third anti-slip tooth, 23-second auxiliary joint, 24-fourth anti-slip tooth, 25-second outer cavity, 3-connecting part. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. In addition, the technical features involved in each embodiment of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0040] Example 1

[0041] like Figure 1 , 2 As shown, the embodiment of the utility model provides a reducer for flushing water pipes of a water tank, including a first joint 1 and a second joint 2. The inner diameters of the first joint 1 and the second joint 2 are different, and are used to connect water pipes of different diameters. One end of the two joints is connected to the water inlet pipe, and the other end is connected to the drain of the water tank to flush and clean the water tank. When connecting and disassembling, only a simple plug-in operation is required to achieve quick connection and quick disassembly between the water inlet pipe and the water tank, ensure the stability of the connection between the water inlet pipe and the drain of the water tank, avoid loose connection at the connection, and avoid the connection port falling off due to high pressure, causing personal injury to the operator and affecting the flushing effect.

[0042] The first inner cavity 11 in the first connector 1 is connected to the second inner cavity 21 in the second connector 2. The two have the same inner diameter and the ends are directly connected, that is, the first inner cavity 11 and the second inner cavity 21 have the same cross-sectional size, and the first connector 1 and the second connector 2 are concentrically arranged.

[0043] The outer surface of the first joint 1 is provided with a plurality of first anti-skid teeth 12 along the radial direction to form a first anti-skid tooth array, and the outer surface of the second joint 2 is provided with a plurality of third anti-skid teeth 22 along the radial direction to form a third anti-skid tooth array. The outer diameter of the first anti-skid teeth 12 is a conical surface, which is arranged in an annular shape on the outer surface of the first joint 1, and the outer diameter of the first anti-skid teeth 12 gradually increases from the end to the middle connection. The outer diameter of the third anti-skid teeth 22 is a conical surface, which is arranged in an annular shape on the outer surface of the second joint 2, and the outer diameter of the third anti-skid teeth 22 gradually increases from the end to the middle connection. Two groups of anti-skid tooth arrays are provided on the surface of the two end joints, and when connected with the water pipe and / or the water tank drain, they contact with the inner wall to form a water-blocking structure to achieve sealing at the connection. The outer diameters of the first anti-skid teeth 12 and the third anti-skid teeth 22 at both ends gradually increase toward the middle, which is convenient for connection with the water pipe or the water tank drain.

[0044] The inner surfaces of the first joint 1 and the second joint 2 are also provided with threads for connecting to water pipes with external threads at the ports, so as to enhance the versatility of the reducer.

[0045] When in use, the first connector 1 or the second connector 2 is connected to the port of the water pipe, and the other end is connected to the drain outlet of the water tank. Flushing is performed manually with assistance, and the device can be directly pulled out after flushing is completed.

[0046] Example 2

[0047] like Figure 3 , 4 As shown, the first inner cavity 11 in the first joint 1 is connected to the second inner cavity 21 in the second joint 2, and the two are connected as a whole by an annular plate, and both ends are transparent, the outer diameter of the first joint 1 is the same as the outer diameter of the annular plate, and the inner diameter of the second joint 2 is the same as the inner diameter of the annular plate. The first joint 1, the second joint 2 and the annular plate are integrally formed to ensure that there is no gap between the structures.

[0048] Example 3

[0049] like Figure 5 , 6 As shown, a connecting portion 3 is further provided between the first joint 1 and the second joint 2 of the embodiment of the utility model, wherein the inner diameter and outer diameter of one end of the connecting portion 3 are the same as the inner diameter and outer diameter of the first joint 1, and the inner diameter and outer diameter of the other end are the same as the inner diameter and outer diameter of the second joint 2. The first joint 1, the second joint 2 and the connecting portion 3 are integrally formed.

[0050] Preferably, a funnel-shaped connecting portion 3 is provided at the connection between the first joint 1 and the second joint 2, which serves as a buffer zone when the channels in the joints at both ends become narrower. When water flows from the first joint 1 to the second joint 2, it is buffered in the buffer zone, thereby reducing the buffering force on the reducer and enhancing the buffering force of the reducer.

[0051] Example 4

[0052] like Figure 7 As shown, the connection part 3 of the embodiment of the utility model is a continuous step type, and two adjacent steps are connected by a funnel-shaped tube, the inner diameter of one end of the connection part 3 is the same as the inner diameter and outer diameter of the first joint 1, and the inner diameter and outer diameter of the other end are the same as the inner diameter and outer diameter of the second joint 2. The first joint 1, the second joint 2 and the connection part 3 are integrally formed.

[0053] Preferably, a continuous stepped connection portion 3 is provided at the connection between the first joint 1 and the second joint 2, and serves as a buffer zone when the channel in the joints at both ends becomes narrower. When water flows from the first joint 1 to the second joint 2, it is buffered multiple times in the buffer zone as continuous steps are formed, thereby further reducing the buffering force of the reducer and enhancing the buffering force of the reducer.

[0054] Example 5

[0055] like Figure 8 , 9 As shown, the main body of the connecting part 3 of the embodiment of the utility model is a curved pipe, one end of which is connected to the first joint 1 through a funnel-shaped tube, and the other end is also connected to the second joint 2 through a funnel-shaped tube, and the connection between the first joint 1 and the curved pipe and the connection between the curved pipe and the second joint 2 both form a buffer zone.

[0056] Preferably, the bend on the connecting portion 3 changes the direction of the reducer, making the direct connection direction between the water pipe and the water tank drain outlet more flexible, facilitating the operator's operation under specific working conditions, reducing the difficulty of operation, and enhancing the operating efficiency.

[0057] Example 6

[0058] like Fig.10 , 11 As shown, the first joint 1 of the embodiment of the utility model is also provided with a first sub-joint 13. The bottom of the first sub-joint 13 is connected to one end of the connecting part 3. It is a tube with an inner diameter greater than the outer diameter of the first joint 1 and a shorter length than the first joint 1. The outer surface of the first sub-joint 13 is provided with a plurality of second anti-slip teeth 14 along the radial direction to form a second anti-slip tooth array. The outer surface of the second anti-slip teeth 14 is a conical surface, which is arranged in an annular shape on the outer surface of the first sub-joint 13. The outer diameter of the second anti-slip teeth 14 gradually increases from the end to the middle connection. An annular first outer cavity 15 is formed between the first sub-joint 13 and the outer surface of the first joint 1. When the water pipe or the water tank drain is connected, it is selected to be connected to the first joint 1 or the first sub-joint 13 according to its actual size. When connected to the first joint 1, the water pipe or the water tank drain is placed in the first outer cavity 15.

[0059] The second joint 2 is also provided with a second sub-joint 23, the bottom of which is connected to the other end of the connecting part 3, and is a tube with an inner diameter greater than the outer diameter of the second joint 2, and a length shorter than the second joint 2. The outer surface of the second sub-joint 23 is provided with a plurality of fourth anti-slip teeth 24 along the radial direction to form a fourth anti-slip tooth array, and the outer surface of the fourth anti-slip teeth 24 is a conical surface, which is arranged in an annular shape on the outer surface of the second sub-joint 23, and the outer diameter of the fourth anti-slip teeth 24 gradually increases from the end to the middle connection. An annular second outer cavity 25 is formed between the second sub-joint 23 and the outer surface of the second joint 2, and when the water pipe or the water tank drain is connected, it is selected to connect with the second joint 2 or the second sub-joint 23 according to its actual size, and when connected with the second joint 2, the water pipe or the water tank drain is placed in the second outer cavity 25.

[0060] The inner surfaces of the first auxiliary joint 13 and the second auxiliary joint 23 are both provided with threads for connecting to a water pipe with external threads at the port.

[0061] Preferably, the thread and the arrangement of the sub-joints at both ends provide the reducer with connection ports of different sizes, so that when it faces water pipes or water tank drains of more sizes, it can meet its connection requirements, further enhancing the versatility of the reducer. The first sub-joint 13 and the second sub-joint 23 are respectively shorter than the first joint 1 and the second joint 2, and a cavity is provided between them, so that no interference will occur when the first joint 1 and the second joint 2 are used.

[0062] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A reducer for a water tank flushing water pipe, characterized in that: It comprises a first joint (1) and a second joint (2); The inner diameters of the first joint (1) and the second joint (2) are different; a first inner cavity (11) is provided inside the first joint (1), and a second inner cavity (21) is provided inside the second joint (2); The outer surface of the first joint (1) is provided with a plurality of first anti-slip teeth (12) in a radial direction to form a first anti-slip tooth array; The outer surface of the second joint (2) is provided with a plurality of third anti-slip teeth (22) along the radial direction to form a third anti-slip tooth array.

2. A reducer for a water tank flushing water pipe according to claim 1, characterized in that: The outer diameter of the first anti-slip teeth (12) is a conical surface, and is arranged in a ring shape on the outer surface of the first joint (1), and the outer diameter of the first anti-slip teeth (12) gradually increases from the end to the middle connection; The outer diameter of the third anti-slip teeth (22) is a conical surface and is arranged in a ring shape on the outer surface of the second joint (2). The outer diameter of the third anti-slip teeth (22) gradually increases from the end to the middle connection.

3. A reducer for a water tank flushing water pipe according to claim 1, characterized in that: The first joint (1) and the second joint (2) are connected as one body via an annular plate, and both ends are transparent; The outer diameter of the first joint (1) is the same as the outer diameter of the annular plate, and the inner diameter of the second joint (2) is the same as the inner diameter of the annular plate.

4. A reducer for a water tank flushing water pipe according to claim 1, characterized in that: A connecting portion (3) is also provided between the first joint (1) and the second joint (2).

5. A reducer for a water tank flushing water pipe according to claim 4, characterized in that: The connecting portion (3) is funnel-shaped and serves as a buffer zone when the passages between the first joint (1) and the second joint (2) become narrower.

6. A reducer for a water tank flushing water pipe according to claim 4, characterized in that: The connecting portion (3) is of continuous step type, and two adjacent steps are connected by a funnel-shaped tube, which serves as a multiple buffer zone when the channels in the first joint (1) and the second joint (2) become narrower.

7. A reducer for a water tank flushing water pipe according to claim 4, characterized in that: The main part of the connecting portion (3) is a curved pipe, one end of which is connected to the first joint (1) via a funnel-shaped pipe, and the other end of which is also connected to the second joint (2) via a funnel-shaped pipe, forming buffer zones at the two funnel-shaped pipes.

8. A reducer for a water tank flushing water pipe according to any one of claims 1 to 7, characterized in that: The first joint (1) is also provided with a first auxiliary joint (13), and the second joint (2) is also provided with a second auxiliary joint (23).

9. A reducer for a water tank flushing water pipe according to claim 8, characterized in that: The outer surface of the first auxiliary joint (13) is provided with a plurality of second anti-slip teeth (14) along the radial direction to form a second anti-slip tooth array, and the outer surface of the second anti-slip teeth (14) is a conical surface; An annular first outer cavity (15) is formed between the first auxiliary joint (13) and the outer surface of the first joint (1); when a water pipe or a water tank drain outlet is connected, it is selected to be connected to the first joint (1) or the first auxiliary joint (13) according to its actual size; when connected to the first joint (1), the water pipe or the water tank drain outlet is placed in the first outer cavity (15).

10. A reducer for a water tank flushing water pipe according to claim 8, characterized in that: The outer surface of the second auxiliary joint (23) is provided with a plurality of fourth anti-slip teeth (24) along the radial direction to form a fourth anti-slip tooth array, and the outer surface of the fourth anti-slip teeth (24) is a conical surface; An annular second outer cavity (25) is formed between the second auxiliary joint (23) and the outer surface of the second joint (2); when a water pipe or a water tank drain outlet is connected, it is selected to be connected to the second joint (2) or the second auxiliary joint (23) according to its actual size; when connected to the second joint (2), the water pipe or the water tank drain outlet is placed in the second outer cavity (25).

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