A feeding device on a handheld sprayer

Abstract

The application belongs to the technical field of spraying equipment, and particularly relates to a feeding device on a handheld spraying machine, which comprises a spraying machine body, a feeding device is connected to the spraying machine body, the feeding device comprises a cover body, a sealing body and a foldable pressure body, the cover body is connected with the spraying machine, one end of the sealing body is connected with the cover body, and the other end of the sealing body is screw-connected with the pressure body; the feeding device on the handheld spraying machine is simple in structure and convenient to replace.

Description

Technical Field

[0001] This invention relates to, and more particularly to, the field of spraying tools, to a feeding device for a handheld sprayer. Background Technology

[0002] Traditional cleaning agent spraying uses a spray gun, and traditional spraying involves inserting a tube into a tank full of liquid to suction and pressurize the spray.

[0003] Currently, the market-available handheld airless sprayer (Chinese patent application number 201320619231.1 discloses a type of airless sprayer) includes a container chamber assembly, a housing mounted on the container chamber assembly, a nozzle assembly, an exhaust knob assembly, and a control switch mounted on the housing. A motor assembly connected to the control switch is mounted inside the housing. A high-pressure chamber assembly, a liquid outlet valve assembly, a plunger assembly, and a gearbox assembly are installed between the motor assembly and the nozzle assembly. The exhaust knob assembly is connected to the liquid outlet valve assembly, and an inlet valve assembly is installed between the liquid outlet valve assembly and the container chamber assembly. This replaces the traditional tubular sprayer, but the actual container used needs to meet high standards. It employs an external rigid frame and an internal flexible bottle, with the flexible bottle fixed to the rigid frame, to meet the actual spraying requirements of the assembly. During spraying, a large suction force is required to deform the flexible bottle and spray out the internal solution. The overall cost is high, and the solution needs to be poured into the bottle formed by the rigid frame and flexible bottle before use, which is cumbersome. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a feeding device for a handheld sprayer that is simple in structure and easy to replace.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A feeding device for a handheld sprayer includes a sprayer body, characterized in that a feeding device is connected to the outside of the sprayer body, the feeding device includes a cover, a sealing body and a foldable pressure body, the cover is connected to the sprayer, one end of the sealing body is connected to the cover, and the other end of the sealing body is spirally connected to the pressure body. The sealing body includes a sealing body, a sealing gasket, and a filler. One end of the sealing body has a first connecting groove, the sealing gasket is placed at the bottom of the first connecting groove, the inner wall of the first connecting groove has an internal thread, the outer side of the filler has an external thread, the filler is spirally placed in the first connecting groove, the filler has a first through hole, the sealing gasket has a second through hole, the diameter of the first through hole is larger than the diameter of the second through hole, and the other end of the sealing body has a second connecting groove for threaded connection with a pressure body, the second connecting groove is connected to the first connecting groove.

[0006] Further configuration: The pressure body is provided with a cavity for holding the solution, and the pressure body is provided with a lead that is spirally connected to the second connecting groove. The pressure body is provided with a number of annular notches on the outside, and the number of annular notches are evenly distributed on the outside of the pressure body, with protrusions formed between adjacent annular notches.

[0007] Further configuration: A sealing ring is provided on the other end of the sealing gasket that contacts the filler, and the sealing ring is heat-fused to the sealing gasket.

[0008] Further configuration: The material of the pressure body is LDPE.

[0009] Further configuration: The cover body is threadedly connected to the sealing body, the cover surface of the cover body is raised, the cover body is provided with an air outlet, and the air outlet is provided with a sealing head.

[0010] By adopting the above technical solution, the beneficial effects of the present invention are as follows: when spraying, the cover body is connected to the sealing body and the foldable pressure body is connected. No pipe is needed. The spray gun directly sucks and pressurizes the pressure body, which is then folded. As the air is sucked away, the pressure body is folded, and the liquid inside is squeezed and sprayed out through the spray gun. After use, the pressure body can be directly replaced, which can complete the secondary use without the need for pouring, making it easy to replace. Attached Figure Description

[0011] Figure 1 This is a structural exploded view of an embodiment of the present invention.

[0012] Figure 2 This is a schematic diagram of the sealing body structure according to an embodiment of the present invention. Detailed Implementation

[0013] Reference Figures 1 to 2 The embodiments of the present invention will be further described below.

[0014] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0015] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0016] The spray gun body 101 is the existing spray gun. It is directly connected to the spray gun body 101 via the cover 201. The cover 201 is connected to the sealing body via a screw connection, which facilitates disassembly and ensures the overall connection is airtight. The sealing body comprises a sealing body 301, a sealing gasket 601, and a filler 501. The sealing body 301 serves as the primary connection medium. A first connecting groove 302 is provided at one end of the sealing body 301 for direct connection with the filler 501. The filler 501 connects to the first connecting groove 302 via internal and external threads 303. This provides strong spiral compression to the sealing gasket 601 placed at the bottom of the first connecting groove 302, ensuring a tight seal between the sealing gasket 601 and the bottom of the groove. The filler 501 has a first through-hole 503, and the sealing gasket 601 has a second through-hole 602. The diameter of the first through-hole 503 is larger than that of the second through-hole 602. This ensures that the solution undergoes a pressurized process as it passes through the second through-hole 602 and then the first through-hole 503, generating a strong suction force during adsorption to draw the solution from the sealing body 401. The other end of the sealing body 301 is provided with... The second connecting groove 304 is threadedly connected to the pressure body 401. The second connecting groove 304 is connected to the first connecting groove 302. It is also for the purpose of spiral connection to achieve spiral sealing and improve the overall sealing performance. When the spray gun body applies suction, while ensuring its overall sealing performance, the shape of the pressure body 401 is changed. Unlike the traditional random deformation, it is changed to compression according to a specified shape. With several annular notches 402 on the outside of the pressure body 401, a protrusion 404 is formed between adjacent annular notches 402. When under force, it deforms and forms folding and extrusion, which is used to transport the solution outward. At the same time, the sealing ring 701 and the sealing gasket 601 are heat-fused together and abut against the lead 403 that is spirally connected to the second connecting groove 304 to improve the firmness of the connection and achieve further sealing. The material of the pressure body 401 is LDPE. With the characteristics of LDPE itself, the pressure body 401 after processing has good deformation ability and a certain degree of flexibility. The cover surface of the cover 201 is set with a raised section 202. The raised section 202 can increase the internal pressure bearing capacity. Furthermore, by setting a sealing head 204 at the air outlet 203, it is convenient to release pressure when stopping later, reducing the possibility of spraying due to direct disassembly.

[0017] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any ordinary changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention should be included within the protection scope of the present invention.

Claims

1. A feeding device for a handheld sprayer, comprising a sprayer body, characterized in that, The spraying machine is externally connected to a feeding device, which includes a cover, a sealing body, and a foldable pressure body. The cover is connected to the spraying machine, one end of the sealing body is connected to the cover, and the other end of the sealing body is spirally connected to the pressure body. The sealing body includes a sealing body, a sealing gasket, and a filler. One end of the sealing body has a first connecting groove, the sealing gasket is placed at the bottom of the first connecting groove, the inner wall of the first connecting groove has an internal thread, the filler has an external thread, the filler is spirally placed in the first connecting groove, the filler has a first through hole, the sealing gasket has a second through hole, the diameter of the first through hole is larger than the diameter of the second through hole, and the other end of the sealing body has a second connecting groove for threaded connection with the pressure body, the second connecting groove communicating with the first connecting groove.

2. The feeding device for a handheld spray painting machine according to claim 1, characterized in that, The pressure body has a cavity for holding the solution, and the pressure body has a lead that is spirally connected to the second connecting groove. The pressure body has several annular notches on its outside, and the several annular notches are evenly distributed on the outside of the pressure body, with protrusions formed between adjacent annular notches.

3. The feeding device for a handheld spray painting machine according to claim 1, characterized in that, A sealing ring is provided on the other end of the sealing gasket that contacts the filler, and the sealing ring is heat-fused to the sealing gasket.

4. The feeding device for a handheld spray painting machine according to claim 2, characterized in that, The pressure body is made of LDPE.

5. The feeding device for a handheld spray painting machine according to claim 2, characterized in that, The cover and the sealing body are threaded together. The cover surface is raised and has an air outlet. A sealing head is provided on the air outlet.

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