Spraying device capable of determining spraying boundary
By designing the pressure regulating chamber and needle element structure in the spraying device, the problem of uncertain boundaries and uneven distribution of spray guns during large-area spraying is solved, and the determination of spraying boundaries and uniformity of coating distribution is achieved.
Patent Information
- Application Number
- CN202420924024.5
- 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
It is difficult to determine the spray boundary when spraying on a large area, and the paint is unevenly distributed, resulting in a large amount of paint splashing to places where spraying is not required.
A spraying device is designed, including a spray shell, a spraying material conveyor and a compressed air conveyor. Through the overflow pressure regulating member and a plurality of needle injection members, the coating is uniformly diverted to the inlet of each needle injection member through the pressure regulating chamber. At the end of the material, compressed air breaks the paint into small particles without changing the direction of the paint, and outputs it synchronously through multiple needles to determine the spray boundary and the paint distribution is evenly distributed.
The determination of spray boundaries and uniformity of paint distribution during large-area spraying are achieved, the paint splash is avoided, and the vertical spraying of the paint is ensured to the target area.
Smart Images
Figure CN222358640U_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the field of spraying, and in particular to a spraying device capable of determining a spraying boundary. Background Art
[0002] A spray gun is a tool for spraying paint. An atomizing device is provided on the spray gun. The atomizing device consists of a nozzle and an atomizing cap, an air flow channel is formed between the two, and a paint channel is provided in the nozzle. The spray gun uses compressed air quickly released from the air flow channel as power to spray the paint out of the nozzle.
[0003] like Figure 1 As shown, during the spraying process, the existing spray gun drives the pump through compressed air, 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.
[0004] However, if Figure 2 As shown, since the existing spray gun has only one paint outlet, when spraying a large area, the only way is to increase the amount of paint output, and at the same time, the amount of compressed air for atomizing the paint and the compressed air for controlling the spray width must be increased. The increase in the amount of compressed air for atomizing the paint will result in a large difference in the size of the atomized paint particles on a large surface area, and the increase in the compressed air for controlling the spray width will blow the paint particles of different sizes into uncontrollable shapes, resulting in uneven distribution of paint sprayed over a large area, and a large amount of paint will splash to other places that do not need to be sprayed, resulting in the inability to determine the spray boundary.
[0005] Therefore, for spray guns that require large-area spraying, how to determine the spraying boundary and ensure that the paint distribution of large-area spraying is relatively uniform is an urgent problem that needs to be solved. Utility Model Content
[0006] The purpose of the present invention is to overcome the deficiencies in the prior art and to provide a spraying device that can determine the spraying boundary and spray a large area with relatively uniform paint distribution.
[0007] The purpose of this disclosure is achieved through the following technical solutions:
[0008] A spraying device capable of determining a spraying boundary comprises a spraying housing, a spraying material conveying member and a compressed air conveying member, wherein the spraying material conveying member and the compressed air conveying member are both arranged on the spraying housing, one end of the spraying material conveying member is connected to a coating material input member, and one end of the compressed air conveying member is connected to a compressed air input member;
[0009] The spray housing is provided with a material passing trough connected to one end of the spray material conveying member, and the bottom of the material passing trough is provided with a plurality of installation through grooves distributed at intervals;
[0010] The spraying device further comprises a flow regulating member and a plurality of spray needle members, wherein the flow regulating member is arranged in the material feeding trough, the flow regulating member forms a pressure regulating cavity, one end of the pressure regulating cavity is connected with one end of the spraying conveying member, each of the spray needle members is arranged in the corresponding mounting through groove, and the feeding end of each of the spray needle members is connected with the other end of the pressure regulating cavity;
[0011] The spray shell is also provided with a discharge trough, which is respectively connected to the other end of the compressed air conveying member and the discharge ends of the plurality of spray needle members. The bottom of the discharge trough is provided with a plurality of discharge holes, and each of the discharge holes is located directly below the discharge end of the corresponding spray needle member.
[0012] In one embodiment, the pressure regulating chamber includes a first pressure regulating sub-chamber, a direct current chamber and a second pressure regulating sub-chamber, the top end of the direct current chamber is connected to the other end of the spray conveying member, the side end of the direct current chamber is connected to one end of the first pressure regulating sub-chamber, and the other side end of the direct current chamber is connected to one end of the second pressure regulating sub-chamber.
[0013] In one embodiment, the cross-sectional area of the first voltage regulating sub-cavity decreases from an end close to the DC cavity to an end away from the DC cavity;
[0014] The cross-sectional area of the second voltage regulating sub-cavity decreases gradually from an end close to the DC cavity to an end away from the DC cavity;
[0015] The first voltage regulating sub-cavity and the second voltage regulating sub-cavity are symmetrically arranged along the central point of the direct current cavity.
[0016] In one embodiment, the inclinations of the first pressure regulating sub-cavity and the second pressure regulating sub-cavity are both 3 degrees to 8 degrees.
[0017] In one embodiment, the spray shell is provided with a first embedding groove, and the bottom of the first embedding groove is provided with a first feed port and a second feed port which are symmetrically distributed. The other end of the spray conveying member is arranged at the first embedding groove, and the first feed port is respectively connected to the direct current chamber and the first pressure regulating sub-chamber, and the second feed port is respectively connected to the direct current chamber and the second pressure regulating sub-chamber.
[0018] In one of the embodiments, the spray housing is provided with a second embedding groove, the bottom of the second embedding groove is provided with an air inlet connected to the discharge groove, and the other end of the compressed air conveying member is arranged in the second embedding groove.
[0019] In one embodiment, there are multiple mounting slots, namely a first mounting slot, multiple second mounting slots and multiple third mounting slots. The first mounting slot is located below the DC chamber, multiple second mounting slots are all located below the first voltage regulating sub-chamber, and multiple third mounting slots are all located below the second voltage regulating sub-chamber.
[0020] In one embodiment, the number of the spray needle parts is multiple, namely a first spray needle part, multiple second spray needle parts and multiple third spray needle parts, the feed end of the first spray needle part is arranged in the first mounting groove, the feed end of each of the second spray needle parts is arranged in the corresponding second mounting groove, the feed end of each of the third spray needle parts is arranged in the corresponding third mounting groove, and the discharge end of the first spray needle part, the discharge ends of the multiple second spray needle parts and the discharge ends of the multiple third spray needle parts are all arranged in the discharge groove.
[0021] In one embodiment, the number of the discharge holes is multiple, namely a first discharge hole, multiple second discharge holes and multiple third discharge holes, the first discharge hole is located directly below the discharge end of the first spray needle member, each of the second discharge holes is located directly below the discharge end of the corresponding second spray needle member, and each of the third discharge holes is located directly below the discharge end of the corresponding third spray needle.
[0022] In one embodiment, the cross-section of the discharge hole is an inverted trapezoid.
[0023] Compared with the prior art, the present invention has at least the following advantages:
[0024] The paint input part conveys the pressurized paint from the spray conveying part to the pressure regulating chamber. The paint passes through the pressure regulating chamber of the flow regulating part and is evenly distributed to the feed end of each spray needle part, so that the hydraulic pressure of the paint flowing into the feed end of each spray needle part is relatively consistent, and then sprayed to the corresponding discharge hole from the discharge end of each spray needle part. At the same time, the compressed air input part conveys the compressed air from the compressed air conveying part to the discharge trough. The compressed air breaks up the paint output from the discharge end of the spray needle part into small particles without changing the spraying direction of the paint. Because the paint is pressurized and each discharge hole is located directly below the discharge end of the corresponding spray needle part, the small particle paint can be sprayed vertically to the target area. The synchronous output of multiple spray needle parts can determine the spraying boundary of the spraying device, and the paint distribution is more uniform when spraying a large area. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] 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.
[0026] Figure 1 It is a structural cross-sectional view of a spray gun in the prior art;
[0027] Figure 2 It is a diagram showing the direction of the spray medium when spraying with a spray gun in the prior art;
[0028] Figure 3 It is a structural schematic diagram of a spraying device capable of determining a spraying boundary in an embodiment;
[0029] Figure 4 for Figure 3 A schematic structural diagram of a spraying device capable of determining a spraying boundary from another perspective;
[0030] Figure 5 for Figure 3 A schematic diagram of a partial structure of a spraying device capable of determining a spraying boundary is shown;
[0031] Figure 6 for Figure 5 A schematic structural diagram of a spraying device capable of determining a spraying boundary from another perspective;
[0032] Figure 7 for Figure 3 A structural cross-sectional view of a spraying device capable of determining a spraying boundary is shown;
[0033] Figure 8 for Figure 7 A partial structural cross-sectional view of a spraying device capable of determining a spraying boundary is shown;
[0034] Fig. 9 A physical diagram of a spraying device capable of determining a spraying boundary according to the present disclosure;
[0035] Fig.10 A physical diagram of the spraying device capable of determining the spraying boundary of the present invention from another perspective;
[0036] Fig.11 It is a schematic diagram of the operation of the spraying device capable of determining the spraying boundary of the present invention when spraying an experimental product during the research and development process. DETAILED DESCRIPTION
[0037] 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.
[0038] 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.
[0039] 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.
[0040] The present invention provides a spraying device capable of determining a spraying boundary, including a spraying housing, a spraying conveying member and a compressed air conveying member, wherein the spraying conveying member and the compressed air conveying member are both arranged on the housing, one end of the spraying conveying member is connected to the paint input member, and one end of the compressed air conveying member is connected to the compressed air input member. The spraying housing is provided with a material passage trough connected to one end of the spraying conveying member, and a plurality of installation through grooves distributed at intervals are provided at the bottom of the material passage trough. The spraying device also includes a flow pressure regulating member and a plurality of spray needle members, wherein the flow pressure regulating member is arranged in the material passage trough, and the flow pressure regulating member forms a pressure regulating cavity, one end of the pressure regulating cavity is connected to one end of the spraying conveying member, and each spray needle member is arranged in a corresponding installation through groove, and the feed end of each spray needle member is connected to the other end of the pressure regulating cavity. The spraying housing is also provided with a discharge trough, which is respectively connected to the other end of the compressed air conveying member and the discharge ends of the plurality of spray needle members, and a plurality of discharge holes are provided at the bottom of the discharge trough, and each discharge hole is located directly below the discharge end of the corresponding spray needle member.
[0041] See also Figures 3 to 8 In order to better understand the spraying device 10 capable of determining the spraying boundary of the present disclosure, the spraying device 10 capable of determining the spraying boundary is further explained below:
[0042] A spraying device 10 capable of determining a spraying boundary in one embodiment includes a spraying housing 100, a spraying material conveying member 200, and a compressed air conveying member 300. The spraying material conveying member 200 and the compressed air conveying member 300 are both arranged on the spraying housing 100. One end of the spraying material conveying member 200 is connected to a paint input member, and one end of the compressed air conveying member 300 is connected to a compressed air input member. The spraying housing 100 is provided with a material passing trough 101 connected to one end of the spraying material conveying member 200, and a plurality of installation through grooves 102 distributed at intervals are provided at the bottom of the material passing trough 101. The spraying device 10 further includes a flow regulating member 400 and a plurality of spray needle members 500. The flow regulating member 400 is disposed in the material passage trough 101. The flow regulating member 400 is formed with a pressure regulating chamber 401. One end of the pressure regulating chamber 401 is connected to one end of the spraying conveying member 200. Each spray needle member 500 is disposed in a corresponding installation through groove 102. The feed end of each spray needle member 500 is connected to the other end of the pressure regulating chamber 401. The spraying housing 100 is also provided with a discharge trough 103. The discharge trough 103 is respectively connected to the other end of the compressed air conveying member 300 and the discharge ends of the plurality of spray needle members 500. The bottom of the discharge trough 103 is provided with a plurality of discharge holes 104. Each discharge hole 104 is located directly below the discharge end of the corresponding spray needle member 500.
[0043] In this embodiment, the paint input component conveys the pressurized paint from the spray conveying component 200 to the pressure regulating chamber 401, and the paint is evenly distributed to the feed end of each spray needle component 500 through the pressure regulating chamber 401 of the flow regulating component 400, so that the hydraulic pressure of the paint flowing into the feed end of each spray needle component 500 is relatively consistent, and then sprayed from the discharge end of each spray needle component 500 to the corresponding discharge hole 104, and at the same time, the compressed air input component conveys the compressed air from the compressed air conveying component 300 to the discharge trough 103, and the compressed air breaks up the paint output from the discharge end of the spray needle component 500 into small particles without changing the spraying direction of the paint. Because the paint is pressurized and each discharge hole 104 is located directly below the discharge end of the corresponding spray needle component 500, the small particle paint can be sprayed vertically to the target area, and multiple spray needle components 500 output synchronously, so that the spraying boundary of the spraying device 10 can be determined, and the paint distribution is more uniform when spraying a large area.
[0044] It should be noted that the pressure value of the paint is 0.6MPa, and the pressure value of the compressed air is 0-2bar. The compressed air between 0 and 2bar will not change the vertical direction of the paint sprayed by the spray needle 500, while breaking up the pressurized paint into small pressurized particles, so that the pressurized small particles can be sprayed vertically from the discharge hole 104 to the target area.
[0045] like Figure 7 and Figure 8As shown, in one embodiment, the pressure regulating chamber 401 includes a first pressure regulating sub-chamber 402, a direct current chamber 403 and a second pressure regulating sub-chamber 404, the top end of the direct current chamber 403 is connected to the other end of the spray conveying member 200, the side end of the direct current chamber 403 is connected to one end of the first pressure regulating sub-chamber 402, and the other side end of the direct current chamber 403 is connected to one end of the second pressure regulating sub-chamber 404. It can be understood that the material transfer pressure regulating member is an annular plate with a hollow area in the middle, namely the DC cavity 403, and the two sides are inclined surfaces, namely forming the first pressure regulating sub-cavity 402 and the second pressure regulating sub-cavity 404. The other end of the spray conveying member 200 is connected to the center of the pressure regulating cavity 401, that is, the DC cavity 403 is located at the center of the pressure regulating cavity 401, and the first pressure regulating sub-cavity 402 and the second pressure regulating sub-cavity 404 are respectively located on both sides of the DC cavity 403. Since the paint is directly input into the DC cavity 403 from the spray conveying member 200, part of the paint will be output from the spray needle member 500 below the DC cavity 403, resulting in the flow along The paint flowing into the first pressure regulating sub-chamber 402 and the second pressure regulating sub-chamber 404 will lose hydraulic pressure. In order to ensure that the hydraulic pressure of the paint flowing out of each spray needle 500 is relatively consistent, the first pressure regulating sub-chamber 402 and the second pressure regulating sub-chamber 404 are used to adjust the pressure of the paint flowing through the first pressure regulating sub-chamber 402 and the second pressure regulating sub-chamber 404, so that the hydraulic pressure of the paint flowing into the spray needle 500 below the first pressure regulating sub-chamber 402, the spray needle 500 below the second pressure regulating sub-chamber 404, and the spray needle 500 below the direct current chamber 403 is relatively consistent, so that the paint distribution of the spray device 10 is relatively uniform when spraying a large area. At the same time, the arrangement of multiple discharge holes 104 enables the spray device 10 to determine the spraying boundary.
[0046] like Figure 7 and Figure 8As shown, in one embodiment, the cross-sectional area of the first pressure regulating sub-chamber 402 decreases from one end close to the DC chamber 403 to one end away from the DC chamber 403. The cross-sectional area of the second pressure regulating sub-chamber 404 decreases from one end close to the DC chamber 403 to one end away from the DC chamber 403. The first pressure regulating sub-chamber 402 and the second pressure regulating sub-chamber 404 are arranged symmetrically along the center point of the DC chamber 403. It can be understood that the material transfer pressure regulating member is an annular plate, with a hollow area formed in the middle, that is, the DC chamber 403, and inclined surfaces on both sides, that is, the first pressure regulating sub-chamber 402 and the second pressure regulating sub-chamber 404. By making the cross-sectional area of the first pressure regulating sub-chamber 402 decrease from one end close to the DC chamber 403 to one end away from the DC chamber 403, a first pressure regulating sub-chamber 402 with an inclination is formed, that is, by reducing the flow path of the paint flowing along the first pressure regulating sub-chamber 402 to compensate for the loss of part of the paint. Similarly, by decreasing the cross-sectional area of the second pressure regulating sub-chamber 404 from one end close to the direct current chamber 403 to the end away from the direct current chamber 403, a second pressure regulating sub-chamber 404 with an angle is formed, that is, by reducing the flow path of the paint flowing to the second pressure regulating sub-chamber 404 to compensate for the loss of part of the paint, the paint in the pressure regulating chamber 401 is always kept in a saturated filling state, thereby ensuring that the hydraulic pressure of the paint flowing out of each spray needle component 500 is relatively consistent, that is to say, the amount of paint flowing out of each spray needle component 500 is relatively consistent, so that the paint distribution of the spray device 10 is relatively uniform when spraying a large area.
[0047] like Figure 8 As shown, in one embodiment, the inclination of the first pressure regulating sub-chamber 402 and the second pressure regulating sub-chamber 404 are both 3 to 8 degrees. It can be understood that the inclination of the first pressure regulating sub-chamber 402 and the second pressure regulating sub-chamber 404 is 3 to 8 degrees, which can keep the paint in the pressure regulating chamber 401 in a saturated state at all times, and can evenly distribute the paint to each spray needle 500 and the hydraulic pressure of the paint flowing into each spray needle 500 is relatively consistent, so that the paint distribution of the spraying device 10 is relatively uniform when spraying a large area.
[0048] like Figure 3 , Figure 6 and Figure 7As shown, in one embodiment, the spray shell 100 is provided with a first embedding groove 105, and the bottom of the first embedding groove 105 is provided with a first feed port 106 and a second feed port 107 which are symmetrically distributed, and the other end of the spray conveying member 200 is arranged at the first embedding groove 105, and the first feed port 106 is respectively connected to the direct current chamber 403 and the first pressure regulating sub-chamber 402, and the second feed port 107 is respectively connected to the direct current chamber 403 and the second pressure regulating sub-chamber 404. It can be understood that the spray conveying member 200 is a pipeline interface member. By providing the first embedding groove 105, the spray conveying member 200 can be fixed on the spray housing 100, so that the paint input member and the spray device 10 can be better connected. The symmetrical arrangement of the first feed port 106 and the second feed port 107 makes the positions of the first feed port 106 and the second feed port 107 input to the first pressure regulating sub-chamber 402 and the second pressure regulating sub-chamber 404 consistent, and the first feed port 106 and the second feed port 107 Part of the paint will be filled into the direct current chamber 403 together, so that the paint is diverted from the first feed port 106 and the second feed port 107 to the first pressure regulating sub-chamber 402 and the second pressure regulating sub-chamber 404 along the same flow path, so that the pressure regulating chamber 401 is always kept in a saturated state, thereby ensuring that the hydraulic pressure of the paint flowing out of each spray needle component 500 is relatively consistent, that is, the amount of paint flowing out of each spray needle component 500 is relatively consistent, so that the paint distribution of the spray device 10 is more uniform when spraying a large area.
[0049] like Figure 3 , Figure 6 and Figure 7 As shown, in one embodiment, the spray housing 100 is provided with a second embedding groove 108, and the bottom of the second embedding groove 108 is provided with an air inlet 109 connected to the discharge groove 103, and the other end of the compressed air conveying member 300 is arranged in the second embedding groove 108. It can be understood that the compressed air conveying member 300 is a pipeline interface member, and the compressed air conveying member 300 can be fixed on the spray housing 100 by providing the second embedding groove 108, so that the compressed air input member and the spray device 10 can be better connected, and the air inlet 109 is the entrance for the compressed air to flow into the discharge groove 103, which can break up the paint into small particles without affecting the vertical spraying direction of the paint, so that the small particles of paint with pressure can be sprayed vertically in the target area, and the arrangement of the plurality of spray needle members 500 can determine the spraying boundary of the spray device 10.
[0050] like Figure 8As shown, in one embodiment, the number of the mounting slots 102 is multiple, namely a first mounting slot 102a, multiple second mounting slots 102b and multiple third mounting slots 102c. The first mounting slot 102a is located below the DC chamber 403, the multiple second mounting slots 102b are all located below the first pressure regulating sub-chamber 402, and the multiple third mounting slots 102c are all located below the second pressure regulating sub-chamber 404. Furthermore, in one embodiment, the number of the spray needle components 500 is multiple, namely a first spray needle component 500a, multiple second spray needle components 500b and multiple third spray needle components 500b, the feed end of the first spray needle component 500a is arranged in the first mounting groove 102a, the feed end of each second spray needle component 500b is arranged in the corresponding second mounting groove 102b, the feed end of each third spray needle component 500c is arranged in the corresponding third mounting groove 102c, and the discharge end of the first spray needle component 500a, the discharge ends of the multiple second spray needle components 500b and the discharge ends of the multiple third spray needle components 500c are all arranged in the discharge groove 103. It can be understood that the center end of the feed end of the first spray needle member 500a of the first mounting slot 102a below the DC chamber 403 overlaps with the center point of the DC chamber 403, and the center point of the DC chamber 403 overlaps with the center point of the symmetry axis of the first feed port 106 and the second feed port 107, so that the amount of paint flowing into the DC chamber 403 from the first feed port 106 and the second feed port 107 is consistent, that is, the amount of paint flowing into the first pressure regulating sub-chamber 402 and the second pressure regulating sub-chamber 404 from the first feed port 106 and the second feed port 107 respectively is also consistent, and in conjunction with the inclined setting of the first pressure regulating sub-chamber 402 and the second pressure regulating sub-chamber 404, the amount of paint flowing into the first spray needle member 500a, multiple second spray needle members 500b and multiple second spray needle members 500b is consistent, so that the hydraulic pressure of the paint flowing out of each spray needle member 500 is consistent, and thus the paint distribution of the spray device 10 is uniform when spraying a large area.
[0051] like Figure 8As shown, in one embodiment, the number of discharge holes 104 is multiple, namely, a first discharge hole 104a, multiple second discharge holes 104b and multiple third discharge holes 104c. The first discharge hole 104a is located directly below the discharge end of the first spray needle member 500a, each second discharge hole 104b is located directly below the discharge end of the corresponding second spray needle member 500b, and each third discharge hole 104c is located directly below the discharge end of the corresponding third spray needle. It can be understood that the center point of the first discharge hole 104a coincides with the center point of the discharge end of the first spray needle member 500a, each second discharge hole 104b coincides with the center point of the discharge end of the corresponding second spray needle member 500b, and each third discharge hole 104c coincides with the center point of the discharge end of the corresponding third spray needle member 500c, so that the paint output by each spray needle member 500 can be accurately sprayed by the corresponding discharge hole 104.
[0052] like Figure 7 As shown, in one embodiment, the cross section of the discharge hole 104 is inverted trapezoidal. It is understandable that the inverted trapezoidal setting can ensure that the small particles of paint are dispersed and sprayed vertically from the discharge hole 104, thereby ensuring the spraying boundary of the spraying device 10.
[0053] It should be noted that the aperture of the discharge hole 104 needs to be greater than 0.1 mm to ensure that small particles of paint can be sprayed out.
[0054] In order to verify the authenticity of the spraying device capable of determining the spraying boundary disclosed in the present invention, please refer to Figures 9 to 11 ,in Fig. 9 and Fig.10 is a physical diagram of the spraying device capable of determining the spraying boundary of the present disclosure, and Fig.11 This is a schematic diagram of the spraying device capable of determining the spraying boundary of the present invention during the spraying of experimental products during the research and development process, combined with Figures 9 to 11 , the spraying device capable of determining the spraying boundary disclosed in the present invention actually exists.
[0055] Compared with the prior art, the present invention has at least the following advantages:
[0056] The paint input part conveys the pressurized paint from the spray conveying part to the pressure regulating chamber. The paint passes through the pressure regulating chamber of the flow regulating part and is evenly distributed to the feed end of each spray needle part, so that the hydraulic pressure of the paint flowing into the feed end of each spray needle part is relatively consistent, and then sprayed to the corresponding discharge hole from the discharge end of each spray needle part. At the same time, the compressed air input part conveys the compressed air from the compressed air conveying part to the discharge trough. The compressed air breaks up the paint output from the discharge end of the spray needle part into small particles without changing the spraying direction of the paint. Because the paint is pressurized and each discharge hole is located directly below the discharge end of the corresponding spray needle part, the small particle paint can be sprayed vertically to the target area, and multiple spray needle parts output synchronously, so that the spraying boundary of the spraying device can be determined, and the paint distribution is more uniform when spraying a large area.
[0057] 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 spraying device capable of determining a spraying boundary, comprising a spraying housing, a spraying material conveying member and a compressed air conveying member, wherein the spraying material conveying member and the compressed air conveying member are both arranged on the spraying housing, one end of the spraying material conveying member is connected to a paint input member, and one end of the compressed air conveying member is connected to a compressed air input member, characterized in that: The spray housing is provided with a material passing trough connected to one end of the spray material conveying member, and the bottom of the material passing trough is provided with a plurality of installation through grooves distributed at intervals; The spraying device further comprises a flow regulating member and a plurality of spray needle members, wherein the flow regulating member is arranged in the material feeding trough, the flow regulating member forms a pressure regulating cavity, one end of the pressure regulating cavity is connected with one end of the spraying conveying member, each of the spray needle members is arranged in the corresponding mounting through groove, and the feeding end of each of the spray needle members is connected with the other end of the pressure regulating cavity; The spray shell is also provided with a discharge trough, which is respectively connected to the other end of the compressed air conveying member and the discharge ends of the plurality of spray needle members. The bottom of the discharge trough is provided with a plurality of discharge holes, and each of the discharge holes is located directly below the discharge end of the corresponding spray needle member.
2. The spraying device capable of determining the spraying boundary according to claim 1, characterized in that: The pressure regulating chamber includes a first pressure regulating sub-chamber, a direct current chamber and a second pressure regulating sub-chamber. The top end of the direct current chamber is connected to the other end of the spray conveying member, the side end of the direct current chamber is connected to one end of the first pressure regulating sub-chamber, and the other side end of the direct current chamber is connected to one end of the second pressure regulating sub-chamber.
3. The spraying device capable of determining the spraying boundary according to claim 2, characterized in that: The cross-sectional area of the first voltage regulating sub-cavity decreases gradually from an end close to the direct current cavity to an end away from the direct current cavity; The cross-sectional area of the second voltage regulating sub-cavity decreases gradually from an end close to the DC cavity to an end away from the DC cavity; The first voltage regulating sub-cavity and the second voltage regulating sub-cavity are symmetrically arranged along the central point of the direct current cavity.
4. The spraying device capable of determining the spraying boundary according to claim 3, characterized in that: The inclinations of the first pressure regulating sub-cavity and the second pressure regulating sub-cavity are both 3 degrees to 8 degrees.
5. The spraying device capable of determining the spraying boundary according to claim 3, characterized in that: The spray shell is provided with a first embedding groove, and the bottom of the first embedding groove is provided with a first feed port and a second feed port which are symmetrically distributed. The other end of the spray conveying member is arranged at the first embedding groove, and the first feed port is respectively connected with the direct current chamber and the first pressure regulating sub-chamber, and the second feed port is respectively connected with the direct current chamber and the second pressure regulating sub-chamber.
6. The spraying device capable of determining a spraying boundary according to claim 5, characterized in that: The spray housing is provided with a second embedding groove, the bottom of the second embedding groove is provided with an air inlet communicated with the discharge groove, and the other end of the compressed air conveying member is arranged in the second embedding groove.
7. The spraying device capable of determining a spraying boundary according to claim 6, characterized in that: There are multiple mounting slots, namely a first mounting slot, multiple second mounting slots and multiple third mounting slots. The first mounting slot is located below the DC chamber, multiple second mounting slots are all located below the first voltage regulating sub-chamber, and multiple third mounting slots are all located below the second voltage regulating sub-chamber.
8. The spraying device capable of determining a spraying boundary according to claim 7, characterized in that: The number of the spray needle parts is multiple, namely a first spray needle part, multiple second spray needle parts and multiple third spray needle parts. The feed end of the first spray needle part is arranged in the first mounting groove, the feed end of each of the second spray needle parts is arranged in the corresponding second mounting groove, the feed end of each of the third spray needle parts is arranged in the corresponding third mounting groove, and the discharge end of the first spray needle part, the discharge ends of the multiple second spray needle parts and the discharge ends of the multiple third spray needle parts are all arranged in the discharge groove.
9. The spraying device capable of determining a spraying boundary according to claim 8, characterized in that: The number of the discharge holes is multiple, namely a first discharge hole, multiple second discharge holes and multiple third discharge holes. The first discharge hole is located directly below the discharge end of the first spray needle member, each of the second discharge holes is located directly below the discharge end of the corresponding second spray needle member, and each of the third discharge holes is located directly below the discharge end of the corresponding third spray needle.
10. The spraying device capable of determining a spraying boundary according to claim 1, characterized in that: The cross section of the discharge hole is in an inverted trapezoidal shape.