Spraying valve convenient to clean

Abstract

The utility model discloses a spraying valve convenient to clean, which comprises a fluid part and a switch part, a medium flow channel is arranged in the fluid part, a valve rod is arranged in the switch part, one end of the valve rod extends into the fluid part and is fixedly provided with a sealing part used for blocking a flow port of the medium flow channel, and the switch part comprises a valve cover, a sealing seat frame and a sealing plastic part. A piston cavity and a valve cover cavity are formed in the valve cover, an external air hole is formed in the piston cavity, a piston piece fixedly arranged with the valve rod is further arranged in the piston cavity, a spring is further connected to the piston piece and the sealing seat frame in an abutting mode, and the spring is used for pushing the piston piece to compress the piston cavity; the valve for spraying is simple in structure and convenient to assemble, the switch part and the fluid part are fully isolated through the sealing isolation assembly arranged between the switch part and the fluid part, the valve body can be cleaned with a small amount of cleaning agent, and maintenance and use are convenient.

Description

Technical Field

[0001] This utility model relates to the field of spray valve technology, specifically to a spray valve that is easy to clean. Background Technology

[0002] A spray valve is a highly efficient coating device that uses compressed air to spray paint, controlling the spray speed and direction. Compared to traditional paint brushes and rollers, spray valves offer higher efficiency, enabling rapid coating of large areas, saving materials, providing uniform paint coverage with reduced waste, and resulting in a more aesthetically pleasing finish with a more natural, fine, and even thickness.

[0003] When the spray valve is in use, the paint flows through the valve and can easily accumulate residue inside. It not only needs to be cleaned regularly, but also, in order to extend the cleaning cycle, it is best to clean it after each spraying to ensure the effect of the next spraying. Cleaning requires the use of a suitable solvent to rinse and remove residue. Utility Model Content

[0004] The purpose of this invention is to provide a novel spray valve with a design that fully isolates the fluid section from the switching section, making maintenance and cleaning more convenient and allowing for cleaning with a small amount of cleaning agent.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a spray valve that is easy to clean, comprising a fluid section and a switching section. The fluid section is provided with a medium flow channel, and the switching section is provided with a valve stem. One end of the valve stem with a sealing part extends into the fluid section to block the outlet of the medium flow channel. The switching section includes a valve cover, a sealing seat, and a sealing plastic part. The sealing seat and the sealing plastic part are sleeved on the valve stem and located in the inner cavity of the valve cover. The valve cover includes a piston cavity and a valve cover cavity. The piston cavity is provided with an external air hole. A piston component fixedly disposed with the valve stem is also provided in the piston cavity. A spring is also abutted against the piston component and the sealing seat, and the spring is used to push the piston component to compress the piston cavity.

[0006] As a further provision of the above solution, the fluid section includes a middle valve body and a lower valve body. The middle valve body is fixed to the valve cover by a first bolt, and a second bolt is also provided. The second bolt is threadedly connected to the upper end of the valve cover to fix the middle valve body and the lower valve body.

[0007] As a further provision of the above scheme, a lower valve cavity is formed between the middle valve body and the lower valve body, and a lower valve seat is provided in the lower valve cavity. The inner wall of the fitting part of the middle valve body used to install the lower valve seat is provided with reverse toothed ridges.

[0008] As a further feature of the above scheme, a middle valve seat is also provided in the middle valve body, and the valve stem is provided with sealing parts corresponding to the middle valve seat and the lower valve seat respectively. The connection and transformation of the medium flow channel are realized by the valve stem driving the sealing parts to switch the blocking.

[0009] As a further provision of the above solution, the switch part and the fluid part are respectively provided with a pressure groove and an embedding groove on the opposite side. The mounting cavity formed by the pressure groove and the embedding groove matches the sealing seat frame. The sealing plastic part is clamped and fixed between the switch part and the fluid part by bolts, isolating the inner cavity of the switch part and the medium flow channel of the fluid part from the fluid part.

[0010] As a further feature of the above solution, a valve cover protective cap is also provided on the valve cover of the switch section, which is used to seal the valve cover cavity.

[0011] Beneficial effects: The spray valve of this utility model, through the sealing and isolation structure set between the fluid part and the switching part, makes the two parts fully isolated, which makes maintenance and cleaning more convenient, and can be cleaned with a small amount of cleaning agent. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the valve body structure of this utility model.

[0013] Figure 2 This is a schematic diagram of the internal structure of the valve of this utility model.

[0014] Figure 3 This is a schematic diagram showing the fit between the valve cover and the middle valve body of this utility model.

[0015] Figure 4 This is a schematic diagram of the valve stem structure of this utility model.

[0016] Figure 5 This is a schematic diagram of the fastening surface of the first bolt on the valve body in this utility model.

[0017] Reference numerals: 1. Fluid section; 10. Middle valve seat; 11. Middle valve body; 12. Lower valve body; 13. First bolt; 14. Second bolt; 16. Lower valve chamber; 17. Lower valve seat; 18. Fitting part; 19. Reverse toothed edge; 2. Switching part; 21. Valve cover; 22. Sealing seat bracket; 23. Sealing plastic part; 24. Piston chamber; 241. External vent; 25. Valve cover chamber; 26. Piston part; 27. Spring; 28. Valve cover protective cap; 29. ​​Pressure groove; 3. Valve stem; 31. Sealing part; 5. Medium flow channel. Detailed Implementation

[0018] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, where there is no conflict, the embodiments and features described in these embodiments can be combined with each other.

[0019] like Figure 1-5 The illustrated spray valve for easy cleaning includes a fluid section 1 and a switching section 2. The fluid section 1 has a medium flow channel 5, and the switching section 2 has a valve stem 3. One end of the valve stem 3, which is fixed with a sealing part 31, extends into the fluid section 1 to block the outlet of the medium flow channel 5. The switching section 2 includes a valve cover 21, a sealing seat 22, and a sealing plastic part 23. The sealing seat 22 and the sealing plastic part 23 are sleeved on the valve stem 3 and located in the inner cavity of the valve cover 21. The valve cover 21 includes a piston cavity 24 and a valve cover cavity 25. The piston cavity 24 has an external vent 241. A piston member 26, which is fixedly disposed in the piston cavity 24 and is fixed to the valve stem 3, is also provided in the piston member 26. A spring 27 abuts against the sealing seat 22, and the spring 27 is used to push the piston member 26 to compress the piston cavity 24.

[0020] As a further provision of the above scheme, the fluid section 1 includes a middle valve body 11 and a lower valve body 12. The middle valve body 11 is fixed to the valve cover 21 by a first bolt 13, and also includes a second bolt 14. The second bolt 14 passes through the upper end of the valve cover 21 and is threaded to fix the middle valve body 11 and the lower valve body 12.

[0021] As a further provision of the above scheme, a lower valve cavity 16 is formed between the middle valve body 11 and the lower valve body 12, and a lower valve seat 17 is provided in the lower valve cavity 16. The inner wall of the fitting part 18 of the middle valve body 11 for installing the lower valve seat 17 is provided with a reverse tooth ridge 19.

[0022] As a further provision of the above scheme, a middle valve seat 10 is also provided in the middle valve body 11. The valve stem 3 is provided with sealing parts 31 corresponding to the middle valve seat 10 and the lower valve seat 17 respectively. When the valve stem 3 is driven to extend and retract axially based on the piston 26, the sealing parts 31 form a blocking and switching medium flow channel 5 passage for the middle valve seat 10 or the lower valve seat 17.

[0023] As a further provision of the above scheme, the switch part 2 is provided with a pressure groove 29 and an insert groove on the side opposite to the fluid part 1, and the mounting cavity formed by the pressure groove 29 and the insert groove matches the sealing seat 22. The sealing plastic part 23 is clamped and fixed between the switch part 2 and the fluid part 1 by bolts, isolating the inner cavity of the switch part 2 and the medium flow channel 5 of the fluid part 1.

[0024] As a further provision of the above scheme, a valve cover protective cap 28 is also provided on the valve cover 21 of the switch part 2, and the valve cover protective cap 28 is used to close the valve cover cavity 25.

[0025] Example: As shown in the figure, the spray valve of this embodiment has a protruding ridge on the valve stem 3 between the fluid section 1 and the switch section 2. The lower end of the sealing section 31 is clamped in the protruding ridge. Then, a valve sleeve 36 is fitted onto the valve stem 3. The lower end of the valve sleeve 36 abuts against and clamps the sealing section 31. A piston 26 is installed on the upper end of the valve sleeve 36 and threaded to ensure axial fixation of the three. A sealing seat 22 is fitted on the outside of the valve sleeve 36 and clamped and fixed by the valve cover 21 and the middle valve body 11. Multiple O-rings are provided between the sealing seat 22 and the valve sleeve 36 to ensure sealing and isolation. A sealing plastic part 23 is also provided between the middle valve body 11 and the valve cover 21. The inner ring of the sealing plastic part 23 is clamped by the valve sleeve 36 and the sealing section 31, and the outer ring of the sealing plastic part 23 is clamped by the sealing seat 22 and the middle valve body 11, thereby achieving preliminary isolation of the fluid through the sealing plastic part 23. The cavity structure of part 1 and switch part 2 has an effect. The sealing plastic part 23 is made of elastic material, such as synthetic plastic sheet. During the extension and retraction of valve stem 3, the inner ring is clamped by sealing part 31 and valve sleeve 36, which causes the sealing plastic part 23 to be elastically stretched. In the normal state, valve stem 3 is driven by the spring 27, which abuts against the fixed sealing seat 22 at one end and abuts against the piston part 26 at the other end. It continuously applies upward force along the valve stem axis. The piston part 26 moves upward to compress piston chamber 24, and drives sealing part 31 to move upward to open medium flow channel 5 of middle valve body 11. Conversely, air is injected from the external air hole 241 from the outside, pushing piston part 26 to move downward, so that sealing part 31 moves down to close medium flow channel 5 in middle valve body 11. Thus, medium flow channel 5 switches to the state of flowing into the middle valve body 11 from the lower valve body 12 and flowing out from the outlet side of middle valve body 11.

[0026] As described above, in the spraying valve of this embodiment, during use, the valve body's switch part 2 is completely isolated from the cavity between the switch part 2 and the fluid part 1 by the cooperation of the sealing plastic part 23, a number of O-rings and other structures, thereby making maintenance and cleaning more convenient, and a small amount of cleaning agent can be used to clean it.

[0027] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A spray valve that is easy to clean, characterized in that: The device includes a fluid section (1) and a switch section (2). The fluid section (1) has a medium flow channel (5), and the switch section (2) has a valve stem (3). One end of the valve stem (3) with a sealing part (31) extends into the fluid section (1) to block the outlet of the medium flow channel (5). The switch section (2) includes a valve cover (21), a sealing seat (22), and a sealing plastic part (23). The sealing seat (22) and the sealing plastic part (23) are fitted onto the valve stem. (3) is located in the inner cavity of the valve cover (21). The valve cover (21) includes a piston cavity (24) and a valve cover cavity (25). An external air hole (241) is provided on the piston cavity (24). A piston component (26) fixedly disposed with the valve stem (3) is also provided in the piston cavity (24). A spring (27) is also abutted against the piston component (26) and the sealing seat (22). The spring (27) is used to push the piston component (26) to compress the piston cavity (24).

2. The easy-to-clean spray valve according to claim 1, characterized in that: The fluid section (1) includes a middle valve body (11) and a lower valve body (12). The middle valve body (11) is fixed to the valve cover (21) by a first bolt (13). It also includes a second bolt (14). The second bolt (14) passes through the upper end of the valve cover (21) and is threaded to fix the middle valve body (11) and the lower valve body (12).

3. The easy-to-clean spray valve according to claim 2, characterized in that: The middle valve body (11) and the lower valve body (12) form a lower valve cavity (16), and a lower valve seat (17) is provided in the lower valve cavity (16). The inner wall of the fitting part (18) of the middle valve body (11) for installing the lower valve seat (17) is provided with a reverse tooth ridge (19).

4. The easy-to-clean spray valve according to claim 3, characterized in that: The middle valve body (11) is also provided with a middle valve seat (10). The valve stem (3) is provided with a sealing part (31) corresponding to the middle valve seat (10) and the lower valve seat (17). The sealing part (31) is switched to block by the valve stem (3) to realize the connection and change of the medium flow channel (5).

5. A spray valve for easy cleaning according to claim 1, characterized in that: The switch part (2) and the fluid part (1) are respectively provided with a pressure groove (29) and a groove. The mounting cavity formed by the pressure groove (29) and the groove matches the sealing seat (22). The outer ring of the sealing plastic part (23) is fixed by bolts to the switch part (2) and the fluid part (1) and is sealed and clamped between the fluid part (1) and the sealing seat (22) to isolate the inner cavity of the switch part (2) and the medium flow channel (5) of the fluid part (1).

6. The easy-to-clean spray valve according to claim 1, characterized in that: The valve stem (3) is also fitted with a valve sleeve (36), the upper end of which abuts against the piston (26), and the other end is sealed with the sealing part (31) and the inner ring of the sealing plastic part (23).

7. A spray valve for easy cleaning according to claim 1, characterized in that: The valve cover (21) of the switch part (2) is also provided with a valve cover protection cap (28), which is used to close the valve cover cavity (25).

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