Water inlet connector

Abstract

The utility model discloses a water inlet connector, which belongs to the technical field of pipe fitting connectors, and adopts the technical scheme that the water inlet connector comprises a connector main body, a check valve is detachably arranged in the connector main body, a limiting step is arranged in the connector main body, a limiting piece is detachably connected in the connector main body, and the limiting step is matched with the limiting piece to limit the check valve. A filter part used for filtering water flow is detachably connected in the connector body, a fluid channel is arranged in the connector body, the water flow in the fluid channel sequentially flows through the filter part and the check valve, and the water inlet connector can simplify the disassembly and assembly process of the check valve.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of pipe fittings, especially relates to a water inlet joint. BACKGROUND

[0002] As an important equipment for improving the comfort of outdoor living, the house car has high portability and flexibility, and provides a temporary accommodation environment for travel, vacation or entertainment.

[0003] The water inlet joint on the house car is one of the indispensable components in the water supply system of the house car, and is used for connecting the water tank of the house car and the external water source. In order to prevent backflow during water supply, a check valve is usually arranged in the water inlet joint. However, with the increase of use time, the function of the built-in check valve is easy to fail. At present, the check valve in the water inlet joint cannot be usually disassembled or the disassembly process is very cumbersome, which causes great difficulty for the user to replace or maintain the check valve in the later period, and seriously affects the use of the user. UTILITY MODEL CONTENTS

[0004] The utility model aims at the above-mentioned problems existing in the prior art, and provides a water inlet joint. The technical problem to be solved by the utility model is how to simplify the disassembly process of the check valve.

[0005] The above technical purpose of the utility model can be realized through the following technical scheme: a water inlet joint, comprising a joint main body, a check valve is detachably arranged in the joint main body, a limiting step is arranged in the joint main body, a limiting piece is detachably connected in the joint main body, the limiting step and the limiting piece cooperate to limit the check valve, a filter piece for filtering water flow is detachably connected in the joint main body, a fluid channel is arranged in the joint main body, and the water flow in the fluid channel flows through the filter piece and the check valve in sequence.

[0006] In the above-mentioned water inlet joint, the limiting piece comprises a snap spring, and a clamping groove for clamping the snap spring is arranged in the joint main body.

[0007] In the above-mentioned water inlet joint, the step surface of the limiting step abuts against the end surface of the check valve.

[0008] In the above-mentioned water inlet joint, a positioning step for limiting the filter piece is arranged in the joint main body.

[0009] In the above-mentioned water inlet joint, the filter piece comprises a cap-shaped rubber filter screen, and the cap-shaped rubber filter screen is clamped in the joint main body.

[0010] In the water inlet joint, a fixing base is threadedly connected to the joint body, the joint body is provided with a positioning disc, and the fixing base and the positioning disc can clamp a mounting plane.

[0011] In the water inlet joint, a sealing ring is arranged between the check valve and the joint body, an inner ring of the sealing ring abuts against an outer sidewall of the check valve, and an outer ring of the sealing ring abuts against an inner sidewall of the joint body.

[0012] In the water inlet joint, at least two rubber gaskets and a gasket are sleeved on the joint body, the two rubber gaskets and the gasket are located between the fixing base and the positioning disc, an end surface of the gasket abuts against an end surface of the fixing base, an end surface of one of the rubber gaskets abuts against an end surface of the gasket, and an end surface of the other rubber gasket abuts against an end surface of the positioning disc.

[0013] In the water inlet joint, a plugging head is detachably connected to the joint body, and the plugging head is used for plugging an inlet of the fluid passage.

[0014] In the water inlet joint, the joint body comprises a threaded connection pipe, a tightening cap and a union cap, the tightening cap is arranged in the union cap and is threadedly connected with the threaded connection pipe, and a limiting flange is arranged on the tightening cap and is used for limiting the union cap in the axial direction.

[0015] In summary, the utility model has the beneficial effects that:

[0016] When the check valve is disassembled, only the filter is disassembled, then the limiting piece is disassembled, the check valve can be directly taken out for replacement or maintenance, when the check valve is installed, only the check valve is directly put into the joint body, then the limiting piece is installed into the joint body, the limiting step in the joint body is limited with the limiting piece, the filter is finally installed into the joint body, the operation is simple, the check valve is disassembled and assembled conveniently, and the user can maintain or replace later. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is a structure schematic view of the embodiment;

[0018] Fig. 2 It is a sectional view of the embodiment;

[0019] Fig. 3 It is a sectional view of the joint body of the embodiment;

[0020] Fig. 4 It is an explosion view of the embodiment.

[0021] Reference numerals: 1. Connector body; 2. Check valve; 3. Limiting step; 4. Snap ring; 5. Cap-shaped rubber filter screen; 6. Fluid channel; 7. Slot; 8. Positioning step; 9. Fixing seat; 10. Positioning plate; 11. Sealing ring; 12. Rubber gasket; 13. Gasket; 14. Sealing head; 15. Threaded connecting pipe; 16. Tightening cap; 17. Union cap; 18. Limiting flange. Detailed Implementation

[0022] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0023] A water inlet connector, such as Figs. 1 to 4 As shown, the connector body 1 includes a threaded connecting pipe 15, a tightening cap 16, and a union cap 17. The tightening cap 16 passes through the union cap 17 and is threadedly connected to the threaded connecting pipe 15. A limiting flange 18 is provided on the tightening cap 16. The limiting flange 18 is used to limit the union cap 17 along its axial direction. The end face of the limiting flange 18 abuts against the union cap 17. The connecting pipe is connected to the union cap 17 through the tightening cap 16. The union cap 17 can rotate circumferentially, which makes it convenient for users to connect external water supply pipes to the union cap 17 to achieve water supply.

[0024] A check valve 2 is detachably installed inside the connector body 1. The check valve 2 is existing technology, and its specific structure and principle will not be described in detail.

[0025] A limiting step 3 is provided inside the connector body 1. In this embodiment, the limiting step 3 is located on the inner side wall of the clamping cap 16. The step surface of the limiting step 3 abuts against the end face of one end of the check valve 2, thereby restricting the position of the check valve 2, ensuring the stability of the installation position of the check valve 2, making it easier for users to determine the installation position of the check valve 2, and making the installation of the check valve 2 more convenient.

[0026] The connector body 1 is detachably connected to a limiting component, which includes a retaining spring 4. The connector body 1 has a retaining groove 7 for the retaining spring 4 to engage. The retaining groove 7 is annular. In this embodiment, the retaining groove 7 is located on the inner side wall of the clamping cap 16. It should be noted that when disassembling or assembling the retaining spring 4, it is only necessary to apply external force with a tool to make the retaining spring 4 disengage or engage with the retaining groove 7. The operation is simple and the disassembly and assembly are convenient. The limiting step 3 cooperates with the limiting component to limit the check valve 2. The end face of the retaining spring 4 abuts against the end face of the other end of the check valve 2, thereby ensuring the stability of the check valve 2.

[0027] As an alternative, a limiting ring can be used as the limiting component. The limiting ring is threaded into the connector body 1, and can be disassembled and assembled by rotating the limiting ring.

[0028] Further, the sealing ring 11 is arranged between the check valve 2 and the joint body 1, the inner ring of the sealing ring 11 abuts against the outer side wall of the check valve 2, and the outer ring of the sealing ring 11 abuts against the inner side wall of the joint body 1, thereby ensuring the sealing between the check valve 2 and the joint body 1, avoiding leakage, and further improving the stability of the check valve 2 due to the fact that the sealing ring 11 is made of rubber.

[0029] The filter element for filtering water flow is detachably connected in the joint body 1, in this embodiment, the filter element comprises a cap-shaped rubber filter screen 5 which is clamped in the joint body 1, and when the cap-shaped rubber filter screen 5 is disassembled, the cap-shaped rubber filter screen 5 can be taken out of or installed into the joint body 1 by external force.

[0030] Further, the joint body 1 is provided with a positioning step 8 for limiting the filter element, in this embodiment, the end face of the clamping cap 16 cooperates with the loose cap 17 to form the positioning step 8, and the end face of the cap-shaped rubber filter screen 5 abuts against the step face of the positioning step 8, thereby limiting the position of the cap-shaped rubber filter screen 5, facilitating the user to determine the installation position of the cap-shaped rubber filter screen 5, and making the installation of the cap-shaped rubber filter screen 5 more convenient.

[0031] As other solutions, the filter element can also use other types of filter screens or filter cartridges with filter screens.

[0032] The joint body 1 is provided with a fluid channel 6, water flow flows into the fluid channel 6 from the inlet, and then flows through the filter element and the check valve 2 in sequence, and finally flows out from the outlet of the fluid channel 6, the water first flows through the filter element for filtering, and then flows to the check valve 2, the filter element retains impurities in the water, and protects the check valve 2 from being damaged by impurities.

[0033] When the check valve 2 needs to be replaced or repaired, the cap-shaped rubber filter screen 5 is first taken out of the joint body 1 by external force, then the clamping spring 4 is disengaged from the clamping groove 7 by applying external force with a tool, and then the check valve 2 can be directly taken out of the joint body 1; when the check valve 2 is installed, the check valve 2 can be directly placed into the joint body 1 until the end face of one end of the check valve 2 abuts against the step face of the limiting step 3, then the clamping spring 4 is installed into the clamping groove 7 by applying external force with a tool, and finally the cap-shaped rubber filter screen 5 is installed into the joint body 1 so that the end face of the cap-shaped rubber filter screen 5 abuts against the step face of the positioning step 8, the check valve 2 is simple to disassemble and assemble, the disassembly and assembly process is simple, and it is convenient for the user to maintain or replace later.

[0034] The threaded connection pipe 15 of the joint body 1 is threadedly connected with a fixing seat 9, and the joint body 1 is provided with a positioning disc 10, and the fixing seat 9 and the positioning disc 10 can clamp a flat surface.

[0035] During installation, the joint body 1 is passed through the installation plane, and then the fixing base 9 is rotated to move the fixing base 9 along the axial direction of the joint body 1 until the fixing base 9 cooperates with the positioning disc 10 to clamp the installation plane, thereby achieving the fixation of the water inlet joint, which is simple in operation and convenient and fast in installation.

[0036] Further, the joint body 1 is sleeved with at least two rubber gaskets 12 and a gasket 13, the two rubber gaskets 12 and the gasket 13 are located between the fixing base 9 and the positioning disc 10, the end face of the positioning disc 10 is provided with a containing groove matched with the rubber gasket 12, the end face of the gasket 13 abuts against the end face of the fixing base 9, the end face of one of the rubber gaskets 12 abuts against the end face of the gasket 13, and the end face of the other rubber gasket 12 abuts against the end face of the positioning disc 10, the two rubber gaskets 12 are in contact with the installation plane to increase the friction, thereby improving the stability of the joint body 1, and the fixing base 9 and the positioning disc 10 can avoid direct contact with the installation plane, thereby avoiding abrasion caused by friction and prolonging the service life of the water inlet joint.

[0037] Further, the end faces of the two rubber gaskets 12 in contact with the installation plane are provided with a plurality of annular protrusions, thereby further increasing the friction.

[0038] The joint body 1 is detachably connected with a plugging head 14, the plugging head 14 is used for plugging the inlet of the fluid passage 6, in the embodiment, the plugging head 14 is threadedly connected with the live cap 17, and as an alternative, the plugging head 14 can be connected with the live cap 17 in a clamping manner.

[0039] It should be noted that the inlet of the fluid passage 6 is plugged by the plugging head 14, thereby avoiding the entry of external impurities into the fluid passage 6.

[0040] The specific embodiments described herein are merely illustrative of the spirit of the utility model; those skilled in the art to which the utility model belongs can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the utility model or exceed the range defined by the appended claims.

Claims

1. A water inlet fitting, characterized by: The utility model provides a filter joint, which comprises a joint body (1), a check valve (2) is detachably arranged in the joint body (1), a limiting step (3) is arranged in the joint body (1), a limiting piece is detachably connected in the joint body (1), the limiting step (3) is matched with the limiting piece and limits the check valve (2), a filter piece for filtering water flow is detachably connected in the joint body (1), a fluid channel (6) is arranged in the joint body (1), and water flow in the fluid channel (6) flows through the filter piece and the check valve (2) in sequence.

2. A water inlet fitting according to claim 1, characterised in that: The limiting piece comprises a circlip (4), and a clamping groove (7) for clamping the circlip (4) is formed in the joint body (1).

3. A water inlet fitting according to claim 1, wherein: The step surface of the limiting step (3) abuts against the end surface of the check valve (2).

4. The water inlet joint of claim 1, wherein: The joint body (1) is provided with a positioning step (8) for limiting the filter piece.

5. A water inlet fitting according to claim 4, wherein: The filter piece comprises a cap-shaped rubber filter screen (5), and the cap-shaped rubber filter screen (5) is clamped in the joint body (1).

6. A water inlet fitting according to claim 1, wherein: The joint body (1) is provided with a fixing base (9) and a positioning disc (10), the fixing base (9) is threadedly connected to the joint body (1), the fixing base (9) and the positioning disc (10) are matched to clamp a mounting plane.

7. A water inlet fitting according to claim 1, wherein: A sealing ring (11) is arranged between the check valve (2) and the joint body (1), the inner ring of the sealing ring (11) abuts against the outer side wall of the check valve (2), and the outer ring of the sealing ring (11) abuts against the inner side wall of the joint body (1).

8. A water inlet fitting according to claim 6, wherein: At least two rubber gaskets (12) and a gasket (13) are sleeved on the joint body (1), the two rubber gaskets (12) and the gasket (13) are located between the fixing base (9) and the positioning disc (10), the end surface of the gasket (13) abuts against the end surface of the fixing base (9), the end surface of one of the rubber gaskets (12) abuts against the end surface of the gasket (13), and the end surface of the other rubber gasket (12) abuts against the end surface of the positioning disc (10).

9. The water inlet fitting of claim 1, wherein: A plugging head (14) is detachably connected to the joint body (1), and the plugging head (14) is used for plugging the inlet of the fluid channel (6).

10. The water inlet fitting of claim 1, wherein: The joint body (1) comprises a threaded connecting pipe (15), a clamping cap (16) and a loose cap (17), the clamping cap (16) is arranged in the loose cap (17) and is threadedly connected with the threaded connecting pipe (15), and a limiting flange (18) is arranged on the clamping cap (16) and is used for limiting the loose cap (17) along the axial direction of the loose cap (17).

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