Water-saving spray head for cleaning shielding door

Abstract

The utility model relates to the technical field of shielding doors, in particular to a water-saving spray head for cleaning a shielding door, which comprises a spray head main body, a valve body is fixedly connected with a water inlet end of the spray head main body, the valve body is connected with a liquid supply device through a conveying pipe and is connected with a recovery device through a return pipe, a valve ball unit is arranged in the valve body, and the valve ball unit is connected with the spray head main body. The spray head main body is communicated with the return pipe through the valve ball unit so as to recycle redundant detergent; wherein the valve ball unit comprises a valve rod, a locking assembly is arranged between the valve rod and the valve body, the locking assembly is used for fixing the valve rod, the spray head body communicates with the conveying pipe and can spray detergent to the shielding door for cleaning, and then the spray head body communicates with the backflow pipe in a manner of rotating the valve ball. In addition, the valve rod can be fixed through the locking assembly, and the function of preventing mistaken touch is achieved.

Description

Technical Field

[0001] This utility model relates to the field of shielded door technology, and in particular to a water-saving spray head for cleaning shielded doors. Background Technology

[0002] Platform screen doors are devices installed on the side of the subway platform near the tracks to separate the platform area from the track area. When a train arrives, the electric doors on the glass curtain wall open to allow passengers to board and alight.

[0003] Platform screen doors require cleaning via spray nozzles during prolonged use or their production process. For example, Chinese Patent Publication No. CN216757418U discloses a subway platform screen door cleaning device, comprising a lifting mechanism and a spraying mechanism. The lifting mechanism includes a base, with a first motor fixedly mounted on the top of the base via a vertical plate. The output shaft of the first motor is fixedly connected to a driving bevel gear, and a driven bevel gear meshes with the outer side of the driving bevel gear. A cylinder is fixedly embedded inside the driven bevel gear, and the bottom of the cylinder is rotatably connected to the base. This subway platform screen door cleaning device, through the lifting and spraying mechanisms, allows a water pump to transport water from a storage tank to a hollow shell via pipes and hoses, enabling the spray nozzles to clean the platform screen doors. Furthermore, the first motor, through the driving and driven bevel gears, drives the cylinder to rotate, which in turn allows the support plate to move the hollow shell and the spray nozzles up and down. This design not only reduces manpower consumption but also improves cleaning efficiency.

[0004] In practice, detergent is sprayed onto the shielding door through the nozzle for rinsing. Usually, after rinsing, it is necessary to rinse with rinsing water. However, the nozzle needs to spray the remaining washing water in the delivery pipe or storage tank before it can spray the rinsing water. Therefore, the excess detergent cannot be recycled, which leads to the waste of water resources. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies where excess detergent cannot be recycled, and to propose a water-saving spray nozzle for cleaning shielded doors.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] Design a water-saving spray head for cleaning shielded doors, including a spray head body, a valve body fixedly connected to the water inlet end of the spray head body, the valve body being connected to a liquid supply device through a delivery pipe and to a recovery device through a return pipe, the valve body having a valve ball unit inside, and the spray head body communicating with the return pipe through the valve ball unit to recover excess detergent;

[0008] The valve ball unit includes a valve stem, and a locking assembly is provided between the valve stem and the valve body. The locking assembly is used to fix the valve stem.

[0009] Furthermore, the valve ball unit also includes a valve ball, which is disposed inside the valve body. The valve ball has a hollow structure, and its internal cavity connects to the side walls to form an inlet, an outlet, and a return port, respectively.

[0010] Furthermore, in the initial state, the inlet and outlet are connected to the delivery pipe and the inlet end of the nozzle body, respectively, and the return port is offset from the return pipe to block the outlet of the return pipe.

[0011] Furthermore, the locking assembly includes a protrusion, the top of the valve body is provided with the protrusion communicating with the internal cavity, the valve stem is rotatably connected in the protrusion, one end of the valve stem is fixedly connected to the valve ball, and the other end extends outward and is bent to form a stop.

[0012] Furthermore, it also includes a support part, which passes through the protrusion through the central through hole and is fixedly connected to the top of the valve body. A pair of guide posts are fixedly connected to the top of the support part, and a stop member is slidably connected to the top of the pair of guide posts through a compression spring.

[0013] Furthermore, a pair of limiting grooves are provided around the periphery of the stop member, the pair of limiting grooves are distributed at right angles, and the limiting grooves can engage with the stop part. The stop member also abuts against the top protrusion of the guide post.

[0014] The present invention provides a water-saving spray head for cleaning shielded doors, which has the following advantages: The present invention adjusts the inlet, outlet, and return port by rotating the valve core via the valve stem, enabling individual connection between the spray head body and the delivery pipe or return pipe. Under normal use, the spray head body connected to the delivery pipe can spray detergent to clean the shielded door. If excess detergent remains in the delivery pipe or storage tank, rotating the valve ball connects the spray head body to the return pipe, allowing for the recovery of excess detergent and thus water conservation. Furthermore, the locking assembly can fix the valve stem, preventing accidental activation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the valve body of this utility model;

[0017] Figure 3 This is a cross-sectional view of the valve ball unit of this utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the ball valve of this utility model;

[0019] Figure 5 This is a schematic diagram of the locking assembly of this utility model;

[0020] Figure 6 for Figure 5 A magnified structural diagram of area A.

[0021] In the diagram: 1. Nozzle body; 2. Valve body; 3. Delivery pipe; 4. Return pipe; 5. Valve ball unit; 51. Valve stem; 52. Valve ball; 521. Inlet; 522. Outlet; 523. Return port; 6. Locking assembly; 61. Protrusion; 62. Stop; 63. Support; 64. Guide post; 65. Compression spring; 66. Stop; 661. Limiting groove. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Reference Figure 1-6 A water-saving spray head for cleaning shielded doors includes a spray head body 1. A valve body 2 is fixedly connected to the water inlet end of the spray head body 1. The valve body 2 is connected to a liquid supply device through a delivery pipe 3 and to a recovery device through a return pipe 4. A valve ball unit 5 is provided inside the valve body 2. The spray head body 1 is connected to the return pipe 4 through the valve ball unit 5 to recover excess detergent.

[0024] The valve ball unit 5 includes a valve stem 51, and a locking assembly 6 is provided between the valve stem 51 and the valve body 2. The locking assembly 6 is used to fix the valve stem 51.

[0025] In some embodiments, the liquid supply device, together with the delivery pipe 3, is used to deliver detergent to the nozzle body, while the recovery device is used to recover excess detergent through the return pipe 4.

[0026] Furthermore, when the nozzle body 1 sprays both detergent and rinsing water, the nozzle body 1 can spray detergent by closing the return pipe 4 and connecting it to the delivery pipe 3 through the valve ball unit 5. Then, the return pipe 4 is connected to the valve ball unit 5 to close the delivery pipe 3, and the excess detergent can be recovered along the return pipe 4 by the push of the rinsing water.

[0027] Furthermore, both the delivery pipe 3 and the return pipe 4 are preferably flexible hoses to facilitate the use of the nozzle body 1.

[0028] Furthermore, the valve ball unit 5 also includes a valve ball 52, which is disposed inside the valve body 2. The valve ball 52 has a hollow structure, and its internal cavity connects to the side wall to form an inlet 521, an outlet 522, and a return port 523, respectively.

[0029] Furthermore, in the initial state, the inlet 521 and the outlet 522 are connected to the inlet end of the delivery pipe 3 and the nozzle body 1, respectively, and the return port 523 is offset from the return pipe 4 to block the outlet of the return pipe 4.

[0030] It is worth mentioning that the specific structure of the valve ball unit 5 can refer to the ball valve in the existing technology, such as... Figure 3 As shown, in the initial state, the water inlet 521 and the water outlet 522 are connected to the water inlet of the delivery pipe 3 and the nozzle body 1, respectively, and the detergent is delivered normally at this time.

[0031] Furthermore, such as Figure 4 As shown, after the valve stem 51 rotates and the valve ball 52 rotates 90 degrees to the left, the inlet 521 is connected to the return pipe 4, and the outlet 522 corresponds to the inner wall of the valve body 2 and does not produce a drainage process. In addition, the return port 523 is connected to the delivery pipe 3. At this time, the detergent is pushed by the rinsing water and transported along the return port 523 and the inlet 521 to the return pipe 4 for recycling.

[0032] More specifically, the locking assembly 6 includes a protrusion 61, the top of the valve body 2 is provided with the protrusion 61 communicating with the internal cavity, the valve stem 51 is rotatably connected in the protrusion 61, one end of the valve stem 51 is fixedly connected to the valve ball 52, and the other end extends outward and is bent to form a stop 62.

[0033] In general, it also includes a support part 63, which passes through the protrusion 61 through the central through hole and is fixedly connected to the top of the valve body 2. A pair of guide posts 64 are fixedly connected to the top of the support part 63, and a stop member 66 is slidably connected to the top of the pair of guide posts 64 through a compression spring 65.

[0034] Finally, the periphery of the stop member 66 is provided with a pair of limiting grooves 661, which are distributed at right angles to each other, and both limiting grooves 661 can engage with the stop part 62. The stop member 66 also abuts against the top protrusion of the guide post 64.

[0035] In this embodiment, the guide post 64 has a T-shaped cross-section and a protruding structure is threaded to its top. The protruding structure abuts against the stop 66. Specifically, the two ends of the compression spring 65 abut against the support part 63 and the stop 66 respectively. The compression spring 65 is used to reset the stop 66.

[0036] In specific operation, a pair of limiting grooves 661 are respectively set to correspond to the outlet 522 and the return port 523. After pressing the stop 66 to move it downward, the limiting groove 661 disengages from the stop part 62, and the valve stem 51 can be rotated. After the valve stem 51 rotates 90 degrees, the stop 66 is reset under the action of the compression spring 65, and the stop part 62 is inserted into the limiting groove 661 to position the valve stem 51 and prevent the valve stem 51 from being accidentally touched or rotated due to accidental operation.

[0037] Working mode: During operation, in the cleaning process, the water inlet 521 and the water outlet 522 are respectively connected to the water inlet end of the delivery pipe 3 and the nozzle body 1, and the detergent is delivered normally at this time.

[0038] After cleaning, press the stop 66 to move it downwards, and the limiting groove 661 will disengage from the stop 62. Then, rotate the valve stem 51. After the valve stem 51 rotates 90 degrees, the inlet 521 is connected to the return pipe 4, and the return port 523 is connected to the delivery pipe 3. At this time, the detergent is pushed by the rinsing water and transported along the return port 523 and the inlet 521 to the return pipe 4 for recycling.

[0039] The stop 66 is reset under the action of the compression spring 65, and the stop part 62 is inserted into the limiting groove 661 to position the valve stem 51 and prevent the valve stem 51 from being accidentally touched or rotated due to accidental operation. After the valve ball 52 is reset, the shielding door can be cleaned with rinsing water.

[0040] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A water saving spray head for shielding door washing, comprising a spray head body (1), characterized in that: A valve body (2) is fixedly connected to the water inlet end of the spray head body (1), the valve body (2) is connected with a liquid supply device through a delivery pipe (3) and connected with a recovery device through a return pipe (4), the valve body (2) is closed to the delivery pipe (3) and communicated to the return pipe (4) through an internal valve ball unit (5) to recover excess detergent. The valve ball unit (5) comprises a valve rod (51), a locking assembly (6) is arranged between the valve rod (51) and the valve body (2), and the locking assembly (6) is used for fixing the valve rod (51).

2. A water saving spray head for use in cleaning a barrier door as claimed in claim 1, characterised in that: The valve ball unit (5) further comprises a valve ball (52), the valve ball (52) is arranged in the interior of the valve body (2), the valve ball (52) is in a hollow structure, and the internal cavity of the valve ball (52) is communicated with the side wall to form a water inlet (521), a water outlet (522) and a return port (523).

3. A water-conserving spray head for use in cleaning a barrier door as defined in claim 2, characterized in that: In the initial state, the water inlet (521) and the water outlet (522) are respectively communicated with the delivery pipe (3) and the water inlet end of the spray head body (1), and the return port (523) is arranged in a staggered manner with the return pipe (4) to block the water outlet of the return pipe (4).

4. A water saving spray head for use in cleaning a barrier door as claimed in claim 2, characterised in that: The locking assembly (6) comprises a protruding portion (61), the top of the valve body (2) is provided with the protruding portion (61) communicated with the internal cavity, the valve rod (51) is rotatably connected in the protruding portion (61), one end of the valve rod (51) is fixedly connected with the valve ball (52), and the other end of the valve rod (51) further extends outward and forms a stop portion (62) by bending.

5. A water-conserving spray head for use in cleaning a barrier door as defined in claim 4, characterized in that: Further comprising a support portion (63), the support portion (63) passes through the protruding portion (61) through a middle through hole and is fixedly connected to the top of the valve body (2), the top of the support portion (63) is fixedly connected with a pair of guide columns (64), a pair of stop pieces (66) are slidably connected to the top of the guide columns (64) through compression springs (65).

6. A water-conserving spray head for use in cleaning a barrier door as defined in claim 5, characterized in that: The stop piece (66) is provided with a pair of limiting grooves (661) on the periphery, the pair of limiting grooves (661) are distributed at right angles between each other, and the limiting grooves (661) can be clamped with the stop portion (62), and the stop piece (66) further abuts against the top protrusion of the guide column (64).

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