Uniform-thickness spray gun
By designing a uniform-thickness spray gun and using hydraulic adjustment parts and medium dispersion parts, the problems of inconsistent spray boundaries and uneven thickness in existing spray guns are solved, and better spray boundary consistency and spray layer thickness uniformity are achieved.
Patent Information
- Application Number
- CN202420933002.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-29
- Publication Date
- 2025-01-17
- Estimated Expiration
- 2034-04-29
AI Technical Summary
During the spraying process, it is difficult to ensure the consistency of the spraying boundary and the uniformity of the spraying thickness, resulting in paint splashing and inconsistent thickness of the spraying layer.
A uniform thickness spray gun is designed, including a shell, a spray medium conveying part, a hydraulic adjustment part and a medium dispersing part. The hydraulic pressure of the spray medium is made uniform through the hydraulic adjustment piece, and the medium dispersion piece is directly sprayed vertically through several spray holes to determine the spray boundary and improve the consistency of the boundary.
The consistency of the spray boundary and the uniformity of the overall spray layer thickness are achieved, and the problems of paint splashing and inconsistent spray layer thickness are avoided.
Smart Images
Figure CN222358645U_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of spraying, and in particular to a uniform thickness spray gun. Background Art
[0002] like Figure 1 As shown, during the spraying process, the current spray gun uses compressed air to drive the pump, and the pump compresses the paint into the spray gun. When the paint fluid reaches the spray gun nozzle, a stream of compressed air blows the fluid into a mist of fine particles, which is called atomization control in the industry, and the size of the atomization is controlled by the size of the compressed air; at the same time, another stream of compressed air blows the misted paint to achieve the change of the spraying area, which is called spray width control in the industry, and the size of the spray width is controlled by the size of the compressed air.
[0003] However, if Figure 2 As shown, when compressed air atomizes paint in current spray guns, the paint fluid will be turned into particles of different sizes. The compressed air that controls the spray width will blow the particles of different sizes into uncontrollable shapes, and the paint will splash to other places where spraying is not required. The boundary of the spraying cannot be determined, and the spraying thickness is also inconsistent, that is, the thickness of the spray layer is uneven.
[0004] Therefore, how to make the spraying boundary more consistent and the overall spraying thickness more uniform is a problem that needs to be solved urgently. Utility Model Content
[0005] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a uniform thickness spray gun that can achieve better spray boundary consistency and more uniform overall spray thickness.
[0006] The purpose of this disclosure is achieved through the following technical solutions:
[0007] A uniform thickness spray gun, comprising a housing and a spray medium conveying member, wherein the spray medium conveying member is arranged on the housing, the spray medium conveying member is provided with an output portion connected to the spray member, and the spray gun further comprises a hydraulic adjustment member and a medium dispersion member;
[0008] The shell is provided with an inner cavity, the hydraulic adjustment component is installed in the inner cavity, the hydraulic adjustment component is used to divide the inner cavity and form a hydraulic adjustment groove and a liquid outlet groove for communicating with the output part, the hydraulic adjustment component is provided with a liquid hole for connecting the hydraulic adjustment groove and the liquid outlet groove to each other, the medium dispersion component is installed at the bottom of the inner cavity, and the medium dispersion component is provided with a plurality of spray holes connected with the liquid outlet groove.
[0009] In one of the embodiments, the spray gun further comprises a plurality of spray needles, one end of each of the spray needles is installed in the corresponding spray hole.
[0010] In one of the embodiments, the cross-sectional area of the hydraulic adjustment groove gradually decreases from an end close to the output portion to an end away from the output portion.
[0011] In one embodiment, the number of the liquid passage holes is multiple, and each of the liquid passage holes is connected to the hydraulic pressure regulating groove and the liquid outlet groove;
[0012] The spray gun further comprises a medium flow collecting member, which is installed in the liquid outlet groove and is provided with flow collecting tooth grooves respectively connected with the plurality of liquid holes and the plurality of spray holes.
[0013] In one of the embodiments, the spray medium conveying member is provided with a return portion connected to the spraying member;
[0014] A reflux annular cavity communicating with the reflux portion is formed between the housing and the hydraulic adjustment member;
[0015] An overflow gap communicating with the return annular cavity is formed between the housing and the hydraulic adjustment member, and the return annular cavity is communicated with the hydraulic adjustment groove through the overflow gap.
[0016] In one embodiment, the periphery of the hydraulic adjustment member is fixed on the inner wall of the inner cavity, and one side of the hydraulic adjustment member abuts against one side of the medium collecting member;
[0017] One surface of the medium dispersing member is installed at the bottom of the inner cavity, and the other surface of the medium dispersing member is in contact with the other surface of the medium current collecting member.
[0018] In one embodiment, the spray gun further includes a constant temperature controller, and the output part and the reflux part are respectively connected to the constant temperature controller.
[0019] In one embodiment, the diameter of the spray hole is greater than 0.1 mm.
[0020] In one embodiment, the shell includes an upper shell box and a lower shell plate, the upper shell box and the lower shell plate are detachably connected, the spray medium conveying member is arranged on the upper shell box, and the inner cavity is surrounded by the upper shell box and the lower shell plate.
[0021] In one of the embodiments, the lower shell plate is formed with a plurality of hollow openings, and each of the hollow openings is connected to a plurality of the spray holes.
[0022] Compared with the prior art, the present invention has at least the following advantages:
[0023] The spraying component transports the spraying medium from the output part of the spraying medium conveying component to the hydraulic regulating groove, and the hydraulic pressure of the spraying medium flowing through the liquid hole is relatively uniform through the hydraulic regulating component, that is, the hydraulic pressure of the spraying medium flowing into the liquid outlet groove is relatively uniform, so that the hydraulic pressure of the spraying medium flowing from the liquid outlet groove to several spraying holes is relatively consistent, and it is directly sprayed vertically through several spraying holes of the medium dispersion component, so that the spraying boundary of the spray gun can be determined, and at the same time, the consistency of the spraying boundary can be improved, so that the thickness of the overall spray layer formed is relatively uniform. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.
[0025] Figure 1 It is a structural cross-sectional view of a spray gun in the prior art;
[0026] Figure 2 It is a diagram showing the direction of the spray medium when spraying with a spray gun in the prior art;
[0027] Figure 3 This is a schematic structural diagram of a uniform thickness spray gun in one embodiment;
[0028] Figure 4 for Figure 3 A schematic structural diagram of the uniform thickness spray gun from another perspective;
[0029] Figure 5 for Figure 4 A cross-sectional view of the uniform thickness spray gun shown;
[0030] Figure 6 for Figure 4 A partial cross-sectional view of the uniform thickness spray gun shown;
[0031] Figure 7 for Figure 4 A partial cross-sectional view of the uniform thickness spray gun shown;
[0032] Figure 8 for Figure 3 A schematic diagram of the partial structure of the uniform thickness spray gun shown;
[0033] Fig. 9 for Figure 3 A schematic diagram of the partial structure of the uniform thickness spray gun shown;
[0034] Fig.10 This is a physical picture of the uniform thickness spray gun. DETAILED DESCRIPTION
[0035] In order to facilitate the understanding of the present disclosure, the present disclosure will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present disclosure are given in the drawings. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present disclosure more thoroughly and comprehensively understood.
[0036] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.
[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present disclosure. The terms used herein in the specification of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. The term "and / or" used herein includes any and all combinations of one or more related listed items.
[0038] The present disclosure provides a uniform thickness spray gun including a housing and a spray medium conveying member, wherein the spray medium conveying member is arranged on the housing, and the spray medium conveying member is provided with an output portion connected to the spray member, and the spray gun further includes a hydraulic adjustment member and a medium dispersion member. The housing is provided with an inner cavity, and the hydraulic adjustment member is installed in the inner cavity, and the hydraulic adjustment member is used to divide the inner cavity and form a hydraulic adjustment groove and a liquid outlet groove for connecting with the output portion, and the hydraulic adjustment member is provided with a liquid hole for connecting the hydraulic adjustment groove and the liquid outlet groove to each other, and the medium dispersion member is installed at the bottom of the inner cavity, and the medium dispersion member is provided with a plurality of spray holes connected with the liquid outlet groove.
[0039] See also Figures 3 to 9 In order to better understand the uniform thickness spray gun 10 disclosed in the present invention, the uniform thickness spray gun 10 is further explained below:
[0040] The uniform thickness spray gun 10 of one embodiment includes a housing 100 and a spray medium conveying member 200, the spray medium conveying member 200 is arranged on the housing 100, the spray medium conveying member 200 is provided with an output portion 210 connected to a spraying member (not shown), and the spray gun 10 also includes a hydraulic adjustment member 300 and a medium dispersion member 400. The housing 100 is provided with an inner cavity 101, the hydraulic adjustment member 300 is installed in the inner cavity 101, the hydraulic adjustment member 300 is used to divide the inner cavity 101 and is formed with a hydraulic adjustment groove 102 and a liquid outlet groove 103 for communicating with the output portion 210, the hydraulic adjustment member 300 is provided with a liquid passage hole 301 for making the hydraulic adjustment groove 102 and the liquid outlet groove 103 communicate with each other, the medium dispersion member 400 is installed at the bottom of the inner cavity 101, and the medium dispersion member 400 is provided with a plurality of spray holes 401 connected to the liquid outlet groove 103.
[0041] In this embodiment, the spraying component transports the spraying medium from the output portion 210 of the spraying medium conveying component 200 to the hydraulic adjusting groove 102, and the hydraulic pressure of the spraying medium flowing through the liquid hole 301 is relatively uniform through the hydraulic adjusting component 300, that is, the hydraulic pressure of the spraying medium flowing into the liquid outlet groove 103 is relatively uniform, so that the hydraulic pressure of the spraying medium flowing from the liquid outlet groove 103 to the plurality of spraying holes 401 is relatively consistent, and is directly sprayed vertically through the plurality of spraying holes 401 of the medium dispersing component 400, so that the spraying boundary of the spray gun 10 can be determined, and at the same time, the consistency of the spraying boundary can be improved, so that the thickness of the overall spray layer formed is relatively uniform.
[0042] It should be noted that the pressurized spraying medium is first transported to the spraying medium conveying member 200 through the spraying member, and then transported to the hydraulic adjusting groove 102 by the output part 210 of the spraying medium conveying member 220, and evenly distributed to each spraying hole 401 through the hydraulic adjusting member 300, that is, the hydraulic pressure of each spraying hole 401 is consistent, and is directly sprayed vertically through the several spraying holes 401 of the medium dispersion member 400, that is, the pressurized spraying medium forms small particles after entering the spraying hole 401 and is directly sprayed vertically, so that the small particles sprayed from each spraying hole 401 will not stick to each other, and each droplet flies independently to the product to be sprayed on its own route. At the same time, the arrangement of several spraying holes 401 can determine the boundary of the spraying, which can improve the consistency of the spraying boundary and the uniformity of the thickness of the spray layer.
[0043] In one embodiment, the spraying medium is a viscous substance such as paint, ink and spray varnish.
[0044] like Figure 4 and Figure 8As shown, in one embodiment, the spray gun 10 further includes a plurality of spray needles 500, one end of each of the spray needles 500 being installed in the corresponding spray hole 401. It is understandable that the plurality of spray holes 401 in the medium dispersion member 400 are evenly arranged according to the spray boundary actually required, so that the spray boundary of the spray gun 10 can be confirmed. The setting of the plurality of spray guns 10 can prevent the small particles directly sprayed from the spray hole 401 from sticking together, and avoid the situation of uneven spray thickness caused by the sticking of small particles, thereby effectively improving the consistency of the spray boundary of the spray gun 10 and the uniformity of the spray effect.
[0045] like Figure 5 As shown, in one embodiment, the cross-sectional area of the hydraulic regulating groove 102 gradually decreases from the end close to the output portion 210 to the end away from the hydraulic regulating groove 102 . It should be noted that, since the position where the output part 210 is connected to the hydraulic regulating groove 102 is the edge of the hydraulic regulating groove 102, when the spraying medium flows into the hydraulic regulating groove 102, part of it will first flow down from the liquid hole 301, which will cause the hydraulic pressure flowing from the liquid outlet groove 103 to each spray hole 401 to be inconsistent. By gradually decreasing the cross-sectional area of the hydraulic regulating groove 102 from the end close to the output part 210 to the end away from the hydraulic regulating groove 102, a sloped hydraulic regulating groove 102 is formed, so that the spraying medium transported by the output part 210 can flow evenly from the hydraulic regulating groove 102 into the liquid outlet groove 103, and then evenly flow into each spray hole 401, so that the hydraulic pressure sprayed by each spray needle 500 is relatively consistent, which can effectively improve the consistency of the spraying boundary when the spray gun 10 is spraying, and improve the thickness uniformity of the overall spray layer.
[0046] like Figure 5 and Fig. 9As shown, in one embodiment, the number of the liquid-passing holes 301 is multiple, and each of the liquid-passing holes 301 is connected to the hydraulic adjustment groove 102 and the liquid outlet groove 103. The spray gun 10 also includes a medium flow collector 600, which is installed in the liquid outlet groove 103 and has flow collector tooth grooves 601 respectively connected to the multiple liquid-passing holes 301 and the multiple spray holes 401. It should be noted that, by gradually decreasing the cross-sectional area of the hydraulic regulating groove 102 from the end close to the output part 210 to the end away from the hydraulic regulating groove 102, a sloped hydraulic regulating groove 102 is formed, that is, the liquid passage hole 301 away from the output part 210 is "process-reduced". When the spraying medium flows into the end of the hydraulic regulating groove 102 away from the output part 210, the sloped hydraulic regulating groove 102 can adjust the hydraulic pressure continuously lost by the spraying medium along the inflow path, so that the spraying medium in the hydraulic regulating groove 102 can flow into each liquid passage hole 301 at a uniform pressure, and then flow into the liquid outlet groove 103 at a uniform pressure from each liquid passage hole 301, that is, flow into each spray hole 401 at a uniform pressure, so that the hydraulic pressure sprayed by each spray needle 500 is relatively consistent, which can improve the consistency of the spraying boundary of the spray gun 10 during spraying and the thickness uniformity of the overall spray layer after spraying by the spray gun 10. Furthermore, by providing a medium flow collecting member 600 in the liquid flow trough, and the medium flow collecting member 600 is provided with flow collecting tooth grooves 601 respectively connected to multiple liquid flow holes 301 and multiple spray holes 401, it is possible to prevent the spray medium from being diverted to various corners of the liquid flow trough, and play a "flow collecting and diverting" role for the spray medium flowing in from the liquid flow holes 301, so that the spray medium can flow out from each spray hole 401 with uniform pressure.
[0047] It should be supplemented that the hydraulic adjustment component 300, the medium collecting component 400 and the medium dispersing component 600 are all plate-like structures, which can be well stacked in the inner cavity, and the multiple liquid holes 301 are located in the middle of the hydraulic adjustment component 300 and are linearly and evenly arranged. The multiple spray holes 401 are symmetrically distributed in two rows in the middle of the medium dispersing component 400, and the multiple spray holes 401 in each row are linearly and evenly arranged. After assembly, the spray gun 10 disclosed in the present invention makes the multiple linearly and evenly arranged liquid holes 301 located directly above the symmetry axis of the two rows of spray holes 401, so that the spray medium flowing in from the liquid holes 301 can be evenly diverted to each spray hole 401, thereby realizing equal pressure spraying of the spray gun 10.
[0048] Furthermore, the slope of the sloped hydraulic adjustment tank 102 is 5 degrees to 10 degrees.
[0049] like Figure 5As shown, in one embodiment, the spray medium conveying member 200 is provided with a reflux portion 220 connected to the spray member. A reflux annular cavity 104 connected to the reflux portion 220 is formed between the housing 100 and the hydraulic adjustment member 300. An overflow gap connected to the reflux annular cavity 104 is formed between the housing 100 and the hydraulic adjustment member 300, and the reflux annular cavity 104 is connected to the hydraulic adjustment groove 102 through the overflow gap. It should be noted that, since the spraying part continuously inputs the spraying medium, the equal pressure spraying can be achieved by providing the reflux part 220, that is, the spraying part continuously inputs the spraying medium to keep the hydraulic regulating groove 102 in a saturated state, and while continuously flowing out through the liquid hole 301, it is also filled in the reflux ring cavity 104 through the overflow gap, and then the liquid pump on the pipeline connecting the spraying part and the reflux part 220 is started, so that the spraying medium is refluxed from the reflux part 220 to the spraying part, so that the equal pressure spraying of the spray gun 10 can be achieved, so that the spraying boundary consistency of the spray gun 10 is better and the thickness uniformity of the overall spray layer after spraying is better. Furthermore, after the spraying of the spray gun 10 is completed, the liquid pump on the pipeline connecting the spraying part and the reflux part 220 can be started, so that the spraying medium in the hydraulic regulating groove 102 and the reflux ring cavity 104 can be recovered to improve the utilization rate of the spraying medium.
[0050] like Figure 3 As shown, in one embodiment, the output portion 210 and the return portion 220 are both detachably connected to the spraying member. It is understandable that the spraying member is detachably connected to the output portion 210 and the return portion 220 through the pipeline, that is, the pipeline can be removed to facilitate the subsequent cleaning operation of the spray gun 10 to prevent part of the spray medium from solidifying or adhering to the spray gun 10 after the spray gun 10 is used.
[0051] like Figure 5 As shown, in one embodiment, the periphery of the hydraulic adjustment member 300 is fixed on the inner wall of the inner cavity 101, and one side of the hydraulic adjustment member 300 abuts against one side of the medium flow collecting member 600. One side of the medium dispersion member 400 is installed at the bottom of the inner cavity 101, and the other side of the medium dispersion member 400 abuts against the other side of the medium flow collecting member 600. It can be understood that the medium dispersion member 400, the medium flow collecting member 600 and the hydraulic adjustment member 300 are sequentially stacked in the inner cavity 101 and are fixed in the inner cavity 101.
[0052] like Figure 3As shown, in one embodiment, the spray gun 10 further includes a thermostat controller (not shown), and the output portion 210 and the reflux portion 220 are respectively connected to the thermostat controller. It should be noted that since the spray medium is a viscous substance such as paint, ink and spray paint, its viscosity will change according to temperature changes, and when the viscosity increases, it will affect the flow rate of the spray medium, and in severe cases, it will adhere to the spray gun 10. Therefore, a thermostat controller is added, and the thermostat controller is respectively connected to the output portion 210 and the reflux portion 220, so that the temperature of the spray medium flowing into the spray gun 10 is relatively consistent, and the temperature of the spray medium refluxed from the reflux portion 220 to the spray part is relatively consistent with that in the spray part, avoiding the situation where the viscosity of the spray medium changes due to temperature changes, ensuring the spraying smoothness of the spray gun 10, and improving the consistency of the spraying boundary of the spray gun 10, as well as the thickness uniformity of the overall spray layer of the spray gun 10.
[0053] It should be noted that the constant temperature control value of the constant temperature controller is appropriately adjusted according to the actual optimal spraying temperature of the spraying medium.
[0054] In one embodiment, the hydraulic pressure of the spray medium is 0.6 MPa. It is understandable that spraying the spray medium at a hydraulic pressure of 0.6 MPa can ensure that a relatively viscous spray medium is sprayed from a plurality of spray needles to form a spray layer.
[0055] It should be noted that the hydraulic pressure value of the spraying medium within 0.6MPa±0.03 will not affect the uniformity of the spraying thickness.
[0056] like Figure 8 As shown, in one embodiment, the diameter of the spray hole 401 is greater than 0.1 mm. It is understandable that the spray hole 401 must be greater than 0.1 mm to be able to spray the spray medium into small particles.
[0057] like Figure 3 As shown, in one embodiment, the housing 100 includes an upper housing box 110 and a lower housing plate 120, the upper housing box 110 and the lower housing plate 120 are detachably connected, the spray medium conveying member 200 is disposed on the upper housing box 110, and the inner cavity 101 is surrounded between the upper housing box 110 and the lower housing plate 120. It can be understood that the upper housing box 110 and the lower housing plate 120 are detachably connected in the form of studs, which can effectively improve the assembly convenience of the spray gun 10 and facilitate the disassembly and maintenance of the spray gun 10.
[0058] like Figure 3 and Fig. 9As shown, in one embodiment, the lower shell plate 120 is formed with a plurality of hollow openings 1201, each of which is connected to a plurality of spray holes 401. It is understandable that each hollow opening 1201 is arranged corresponding to a plurality of spray holes 401 to facilitate the installation of the spray needle 500.
[0059] To verify the authenticity of the uniform thickness spray gun disclosed in this disclosure, please refer to Fig.10 , Fig.10 This is a real picture of the uniform thickness spray gun, combined with Fig.10 It can be known that the uniform thickness spray gun disclosed in the present invention actually exists.
[0060] Compared with the prior art, the present invention has at least the following advantages:
[0061] The spraying component transports the spraying medium from the output part of the spraying medium conveying component to the hydraulic regulating groove, and the hydraulic pressure of the spraying medium flowing through the liquid hole is relatively uniform through the hydraulic regulating component, that is, the hydraulic pressure of the spraying medium flowing into the liquid outlet groove is relatively uniform, so that the hydraulic pressure of the spraying medium flowing from the liquid outlet groove to several spraying holes is relatively consistent, and it is directly sprayed vertically through several spraying holes of the medium dispersion component, so that the spraying boundary of the spray gun can be determined, and at the same time, the consistency of the spraying boundary can be improved, so that the thickness of the overall spray layer formed is relatively uniform.
[0062] The above-mentioned embodiments only express several implementation methods of the present disclosure, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the disclosed patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present disclosure, and these all belong to the protection scope of the present disclosure. Therefore, the protection scope of the disclosed patent shall be subject to the attached claims.
Claims
1. A uniform thickness spray gun, comprising a housing and a spray medium conveying member, wherein the spray medium conveying member is arranged on the housing, and the spray medium conveying member is provided with an output portion connected to the spray member, characterized in that: It also includes hydraulic adjustment components and media dispersion components; The shell is provided with an inner cavity, the hydraulic adjustment component is installed in the inner cavity, the hydraulic adjustment component is used to divide the inner cavity and form a hydraulic adjustment groove and a liquid outlet groove for communicating with the output part, the hydraulic adjustment component is provided with a liquid hole for connecting the hydraulic adjustment groove and the liquid outlet groove to each other, the medium dispersion component is installed at the bottom of the inner cavity, and the medium dispersion component is provided with a plurality of spray holes connected with the liquid outlet groove.
2. The uniform thickness spray gun according to claim 1, characterized in that: The spray gun also includes a plurality of spray needles, one end of each of which is installed in the corresponding spray hole.
3. The uniform thickness spray gun according to claim 1, characterized in that: The cross-sectional area of the hydraulic pressure regulating groove gradually decreases from an end close to the output part to an end far away from the output part.
4. The uniform thickness spray gun according to claim 1, characterized in that: The number of the liquid-passing holes is multiple, and each of the liquid-passing holes is connected to the hydraulic pressure regulating groove and the liquid outlet groove; The spray gun further comprises a medium flow collecting member, which is installed in the liquid outlet groove and is provided with flow collecting tooth grooves respectively connected with the plurality of liquid holes and the plurality of spray holes.
5. The uniform thickness spray gun according to claim 1, characterized in that: The spray medium conveying member is provided with a reflux portion connected to the spraying member; A reflux annular cavity communicating with the reflux portion is formed between the housing and the hydraulic adjustment member; An overflow gap communicating with the return annular cavity is formed between the housing and the hydraulic adjustment member, and the return annular cavity is communicated with the hydraulic adjustment groove through the overflow gap.
6. The uniform thickness spray gun according to claim 4, characterized in that: The periphery of the hydraulic adjustment member is fixed on the inner wall of the inner cavity, and one side of the hydraulic adjustment member abuts against one side of the medium current collecting member; One surface of the medium dispersing member is installed at the bottom of the inner cavity, and the other surface of the medium dispersing member is in contact with the other surface of the medium current collecting member.
7. The uniform thickness spray gun according to claim 5, characterized in that: A constant temperature controller is also included, and the output part and the reflux part are respectively communicated with the constant temperature controller.
8. The uniform thickness spray gun according to claim 1, characterized in that: The diameter of the spray hole is greater than 0.1 mm.
9. The uniform thickness spray gun according to claim 1, characterized in that: The shell comprises an upper shell box and a lower shell plate, the upper shell box and the lower shell plate are detachably connected, the spray medium conveying member is arranged on the upper shell box, and the inner cavity is surrounded by the upper shell box and the lower shell plate.
10. The uniform thickness spray gun according to claim 9, characterized in that: The lower shell plate is formed with a plurality of hollow openings, and each of the hollow openings is connected to a plurality of the spray holes.