Electric sprayer handle with leak and backflow prevention function

Abstract

The utility model discloses an electric sprayer handle with leak -stoppage and reverse function, include: handle body, one end is provided with the spray bar joint, and the opposite end is provided with the water inlet pipe, water pump is set up in the handle body inside, leak -stoppage valve, it includes valve body, spring and sphere, is provided with valve body installation groove in the spray bar joint, and the bottom of valve body installation groove is connected with the liquid outlet of water pump, and valve body is placed in valve body installation groove, and spring is placed in the cavity of valve body, and spring one end contacts the cavity bottom wall, and the opposite end contacts the sphere, and the sphere is used for blocking the liquid outlet, the spray bar is provided with the installation joint in the end, and the installation joint is connected on the spray bar joint with screw thread. Compared with prior art, the utility model reduces the spare parts of separate valve, simplifies the assembly, when maintaining leak -stoppage valve, can not need to dismantle water pump, also need not to open handle machine shell, only need handle water outlet just can maintain, is more convenient maintenance, reduces the process complexity of water pump.

Description

Technical Field

[0001] This utility model relates to the field of electric sprayer technology, and in particular to an electric sprayer handle with leak-proof and backflow-proof functions. Background Technology

[0002] Electric sprayers are powered by batteries to drive a water pump, turning medicine or other liquids into a mist that is then sprayed evenly onto other objects.

[0003] To prevent water leakage from the spray bar end when the electric sprayer is not running, a leak-proof valve is integrated into the filter of the inlet pipe. The leak-proof valve is open when the electric sprayer's water pump is started and blocks water flow when the pump is turned off, thus effectively preventing leakage.

[0004] In the aforementioned leak-proof design of the electric sprayer, the leak-proof valve is located at the water inlet end of the water pump. Due to the pump's suction principle, the suction force at the pump inlet is relatively small, while the spray force at the outlet is relatively large. Since the leak-proof valve needs to open under low pressure, its placement at the suction end can easily lead to insufficient pump suction, affecting the pump's pumping capacity and reducing the spray head of the electric sprayer.

[0005] In addition, when manually storing the sprayer after spraying, the telescopic spray boom is often retracted. At this time, the water pressure inside the spray boom increases sharply, and the backflowing water impacts the rubber parts inside the water pump, causing the rubber parts to crack and damaging the water pump. Utility Model Content

[0006] The purpose of this utility model is to provide an electric sprayer handle with leak-proof and backflow-proof functions to solve the problems of low spray head and lack of backflow protection in existing electric sprayers caused by improper arrangement of the leak-proof valve.

[0007] To achieve the above objectives, this utility model adopts the following technical solution: an electric sprayer handle with leak-proof and backflow-proof functions, comprising:

[0008] The handle body has a spray bar connector at one end and a water inlet pipe at the opposite end;

[0009] The water pump is located inside the handle body;

[0010] The leak-proof valve includes a valve body, a spring, and a ball. The spray bar connector is provided with a valve body mounting groove. The bottom of the valve body mounting groove is connected to the outlet of the water pump. The valve body is placed in the valve body mounting groove. The spring is placed in the cavity of the valve body. One end of the spring contacts the bottom wall of the cavity, and the other end contacts the ball. The ball is used to block the outlet.

[0011] The spray bar has a mounting connector at its end, which is threaded onto the spray bar connector.

[0012] As a further description of the above technical solution:

[0013] The mounting connector has a boss on its inner side. The boss is inserted into the valve body mounting groove, and the end of the boss contacts the valve body.

[0014] As a further description of the above technical solution:

[0015] A sealing ring is provided at the end of the valve body, and the sealing ring contacts the bottom surface of the valve body mounting groove.

[0016] As a further description of the above technical solution:

[0017] The outer side of the mounting joint has several circumferentially arranged arc-shaped grooves.

[0018] As a further description of the above technical solution:

[0019] The spray bar includes an outer tube and an inner rod. One end of the outer tube is equipped with a telescopic locking sleeve, and the other end is equipped with an installation joint. The inner rod passes through the outer tube, and a nozzle is provided at the end of the inner rod.

[0020] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0021] 1. In this utility model, a leak-proof valve is installed on the handle of the electric sprayer between the spray bar and the water pump to eliminate the influence on the suction of the water pump, reduce the influence on the spray head, and effectively prevent the liquid in the spray bar from flowing back and damaging the water pump after the water pump stops working. At the same time, it prevents the liquid in the sprayer bottle from flowing out through the spray bar when the water pump is not started.

[0022] 2. In this utility model, the leak-proof valve is located inside the spray bar connector. The leak-proof valve is fixed in position by the installation of the spray bar, simplifying the installation structure of the leak-proof valve. The leak-proof valve is easy to install, disassemble, and replace. Integrating the leak-proof and check-back valve into the handle housing near the water pump outlet allows for maintenance of the leak-proof valve without disassembling the water pump or the handle housing, making maintenance more convenient and reducing the complexity of water pump assembly. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the handle of an electric sprayer with leak-proof and backflow-proof functions.

[0025] Figure 2 This is a cross-sectional view of the handle of an electric sprayer with leak-proof and backflow-proof functions.

[0026] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle.

[0027] Figure 4 A structural breakdown diagram of an electric sprayer handle with leak-proof and backflow-proof functions. Figure 1 .

[0028] Figure 5 A structural breakdown diagram of an electric sprayer handle with leak-proof and backflow-proof functions. Figure 2 .

[0029] Figure 6 This is a cross-sectional view of a leak-stop valve in the handle of an electric sprayer with leak-stopping and backflow prevention functions.

[0030] Legend:

[0031] 1. Handle body; 11. Spray bar connector; 111. Valve body mounting groove; 12. Water inlet pipe; 2. Water pump; 21. Liquid outlet; 3. Leak-proof valve; 31. Valve body; 311. Sealing ring; 32. Spring; 33. Ball; 4. Spray bar; 41. Mounting connector; 411. Arc-shaped groove; 412. Boss; 42. Outer sleeve; 421. Telescopic locking sleeve; 43. Inner rod body. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0033] Example 1

[0034] Please see Figure 1-6 This utility model provides a technical solution: an electric sprayer handle with leak-proof and backflow-proof functions, comprising:

[0035] The handle body 1 has a spray bar connector 11 at one end and a water inlet pipe 12 at the other end.

[0036] Water pump 2 is located inside the handle body 1;

[0037] The leak-proof valve 3 includes a valve body 31, a spring 32 and a ball 33. The spray bar connector 11 is provided with a valve body mounting groove 111. The bottom of the valve body mounting groove 111 is connected to the outlet 21 of the water pump 2. The valve body 31 is placed in the valve body mounting groove 111. The spring 32 is placed in the cavity of the valve body 31. One end of the spring 32 contacts the bottom wall of the cavity and the other end contacts the ball 33. The ball 33 is used to block the outlet 21.

[0038] The spray bar 4 has a mounting connector 41 at its end, which is threaded onto the spray bar connector 11.

[0039] A leak-proof valve is installed on the handle of the electric sprayer between the spray bar 4 and the water pump 2 to eliminate the influence on the suction of the water pump, reduce the influence on the spray head, and effectively prevent the liquid in the spray bar 4 from flowing back and damaging the water pump after the water pump 2 stops working, thus ensuring the service life of the water pump. At the same time, it prevents the liquid in the sprayer bottle from flowing out through the spray bar 4 when the water pump 2 is not started.

[0040] By integrating the leak-proof and check-back valve into the handle housing near the water pump outlet, maintenance of the leak-proof valve can be performed without disassembling the water pump or the handle housing, making maintenance more convenient and reducing the complexity of water pump assembly.

[0041] The leak-stop valve 3 is installed inside the spray bar connector 11. The position of the leak-stop valve 3 is fixed by the installation of the spray bar 4, which simplifies the installation structure of the leak-stop valve 3. The leak-stop valve 3 is easy to install and disassemble, and easy to replace.

[0042] A sealing ring 311 is provided at the end of the valve body 31, and the sealing ring 311 contacts the bottom surface of the valve body mounting groove 111. This improves the sealing performance between the valve body 31 and the handle body 1 and prevents water leakage.

[0043] The mounting connector 41 has several circumferentially arranged arc-shaped grooves 411 on its outer side, which facilitates the rotation of the mounting connector 41 to disassemble the spray bar 4.

[0044] Working principle: When the electric sprayer is working, the water pump 2 starts, and the liquid enters the handle body 1 through the water inlet pipe 12 and enters the leak-proof valve 3 through the liquid outlet 21 at the end of the water pump 2. The ball 33 of the leak-proof valve 3 is subjected to the pressure of the liquid, which squeezes the spring 32 and opens the water passage. The liquid continues to enter the spray bar 4 through the through hole at the end of the valve body 31 to achieve spraying. When the electric sprayer stops working, the water pump 2 stops working. At this time, the ball 33 is no longer subjected to the liquid supply pressure of the water pump 2. The spring 3 drives the ball 33 to reset, blocking the liquid outlet 21 and achieving leak prevention and backflow prevention.

[0045] Example 2

[0046] This embodiment further improves upon the above embodiment by providing the following technical solution: a boss 412 is provided on the inner side of the mounting connector 41, the boss 412 is inserted into the valve body mounting groove 111, and the end of the boss 412 contacts the valve body 31. After the liquid flows out of the valve body 31, it enters the outer sleeve 42 of the spray bar 4 through the round hole on the top surface of the boss 412.

[0047] The boss 412 presses the valve body 31 in the positioning valve body mounting groove 111 to fix the position of the valve body 31. On the other hand, it improves the sealing between the mounting joint 41 and the spray bar joint 11 to prevent water leakage at the connection between the spray bar 4 and the handle body 1.

[0048] Example 3

[0049] Based on the above embodiments, this embodiment further improves upon the following technical solution: a sealing ring 311 is provided at the end of the valve body 31, and the sealing ring 311 contacts the bottom surface of the valve body mounting groove 111 to improve the sealing between the valve body 31 and the handle body 1 and prevent water leakage.

[0050] Example 4

[0051] Based on the above embodiments, the following improved technical solutions are further made in this embodiment: The spray bar 4 includes an outer tube 42 and an inner rod 43. One end of the outer tube 42 is provided with a telescopic locking sleeve 421 and the other end is provided with an installation joint 41. The inner rod 43 passes through the outer tube 42 and a nozzle is provided at the end of the inner rod 43.

[0052] The spray boom 4 is a telescopic design. After the telescopic locking sleeve 421 releases the lock of the outer tube 42 and the inner rod 43, the inner rod 43 can be pulled outward to achieve the strip shape of the entire length of the spray boom 4. When the user retracts the inner rod 43 and shortens the overall length of the telescopic spray boom 4, the water flow is directed towards the water pump 2. The leak-proof valve 3 between the spray boom 4 and the water pump 2 can effectively block this reverse water flow and protect the water pump 2.

[0053] 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. An electric sprayer handle with leak-proof and backflow-proof functions, characterized in that, include: The handle body has a spray bar connector at one end and a water inlet pipe at the opposite end; A water pump is located inside the handle body; A leak-proof valve includes a valve body, a spring, and a ball. The spray bar connector is provided with a valve body mounting groove. The bottom of the valve body mounting groove is connected to the outlet of the water pump. The valve body is placed in the valve body mounting groove. The spring is placed in the cavity of the valve body. One end of the spring contacts the bottom wall of the cavity, and the other end contacts the ball. The ball is used to block the outlet. The spray bar has a mounting joint at its end, which is threaded onto the spray bar connector.

2. The electric sprayer handle with leak-proof and backflow-proof functions according to claim 1, characterized in that, The mounting joint has a boss on its inner side, which is inserted into the valve body mounting groove, and the end of the boss contacts the valve body.

3. The electric sprayer handle with leak-proof and backflow-proof functions according to claim 1, characterized in that, A sealing ring is provided at the end of the valve body, and the sealing ring contacts the bottom surface of the valve body mounting groove.

4. The electric sprayer handle with leak-proof and backflow-proof functions according to claim 1, characterized in that, The outer side of the mounting joint is provided with several circumferentially arranged arc-shaped grooves.

5. The electric sprayer handle with leak-proof and backflow-proof functions according to claim 1, characterized in that, The spray bar includes an outer tube and an inner rod. One end of the outer tube is provided with a telescopic locking sleeve, and the other end is provided with the mounting joint. The inner rod passes through the outer tube, and a nozzle is provided at the end of the inner rod.

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