CN113522594B - Cleaning device for internal flow passage of pneumatic spray gun - Google Patents
Cleaning device for internal flow passage of pneumatic spray gun Download PDFInfo
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- CN113522594B CN113522594B CN202111018830.3A CN202111018830A CN113522594B CN 113522594 B CN113522594 B CN 113522594B CN 202111018830 A CN202111018830 A CN 202111018830A CN 113522594 B CN113522594 B CN 113522594B
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- fixedly connected
- flow passage
- spray gun
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
- B05B15/55—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter using cleaning fluids
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- Cleaning By Liquid Or Steam (AREA)
Abstract
The invention discloses a cleaning device for an internal flow passage of a pneumatic spray gun, which comprises a shell, wherein the shell comprises a shell and a flap door rotationally connected to one side of the shell, the interior of the shell is fixedly connected with the flow passage, a first cleaning part is arranged at the inlet of the flow passage, and the first cleaning part is arranged corresponding to the flap door; the other end of the flow channel is provided with a second cleaning part which is positioned on the top surface of the shell and is communicated with the outside of the shell, the bottom surface of the shell is fixedly connected with a waste liquid tank, and the top surface of the waste liquid tank is communicated with the bottom surface of the flow channel; the third cleaning part is arranged in the flow channel. The invention can clean the internal flow passage of the spray gun, simultaneously sets multiple filter cotton to reduce the speed and absorb the high-speed gas-liquid two-phase flow, and is provided with a special flow passage structure to realize flow guide, reduce the dispersion of liquid fog, and weaken the pollution of the volatile and dispersed cleaning liquid to air and the damage to human body when the internal flow passage of the spray gun is cleaned.
Description
Technical Field
The invention relates to the technical field of spray gun cleaning, in particular to a cleaning device for an internal flow passage of a pneumatic spray gun.
Background
After the pneumatic spray gun is used, a large amount of paint can be accumulated in an inner flow passage of the spray gun. If the spray gun is used, the internal flow passage is not cleaned in time, paint remained in the flow passage and at the nozzle can be solidified, the cleaning difficulty of the spray gun can be increased, the spray gun can be damaged to a certain extent, and the service life of the spray gun is shortened. If the spray gun is not cleaned thoroughly and residual paint is in the spray gun, the next spraying effect of the spray gun can be affected, so that the cleaning process of the flow channel in the spray gun is very important.
The existing cleaning machine can realize the cleaning of the spray gun nozzle and the flow passage in the spray gun. On one hand, the cleaning machine can be blocked by cleaning liquid mist carrying paint sprayed by a pneumatic spray gun of the small portable cleaning machine, on the other hand, the cleaning machine can be damaged by the liquid mist which is not absorbed and treated, and the cleaning liquid is an irritant odor and can harm human bodies after being absorbed for a long time.
Disclosure of Invention
The invention aims to provide a cleaning device for an internal flow passage of a pneumatic spray gun, which is used for solving the problems in the prior art.
In order to achieve the purpose, the invention provides the following scheme: the invention provides a cleaning device for an internal flow passage of a pneumatic spray gun, which comprises a shell, wherein the shell comprises a shell and a flap door rotationally connected to one side of the shell, the interior of the shell is fixedly connected with the flow passage, a first cleaning part is arranged at the inlet of the flow passage, and the first cleaning part is arranged corresponding to the flap door; a second cleaning part is arranged at the other end of the flow passage, is positioned on the top surface of the shell and is communicated with the outside of the shell, a waste liquid tank is fixedly connected to the bottom surface of the shell, and the top surface of the waste liquid tank is communicated with the bottom surface of the flow passage; the runner internally mounted has the third clean portion, the third clean portion is located between first clean portion and the second clean portion.
Preferably, the first cleaning part comprises a mounting plate fixedly connected to one end of the flow channel, a mounting hole is formed in the mounting plate, an oil screen is detachably connected in the mounting hole, one side, away from the flow channel, of the mounting plate is hinged to the bottom end of a turning plate, and the top end of the turning plate is detachably connected with the mounting plate; a pressing disc is fixedly connected to one side, close to the oil screen, of the turning plate, the pressing disc is abutted against the oil screen, filter cotton is arranged between the pressing disc and the oil screen, and the filter cotton is detachably connected with the pressing disc; the plate turnover device is characterized in that an insertion hole for inserting a spray gun is formed in the turnover plate, the insertion hole and the pressing disc are coaxially arranged, one end of a chain is fixedly connected to two sides of the turnover plate, and the other end of the chain is fixedly connected with the mounting plate.
Preferably, the casing top surface has been seted up long through-hole, the clean portion of second is including placing porous frame in the long through-hole, porous frame lateral wall with the connection can be dismantled at the casing top, the filter layer has been laid in the porous frame, porous frame top surface fixedly connected with handle.
Preferably, the flow channel comprises a front side arc sheet, a rear side arc sheet and an upper side arc sheet which are fixedly connected in the shell; one end of the front arc sheet is fixedly connected with the bottom end of the mounting plate, and the other end of the front arc sheet is fixedly connected with the bottom surface of the shell; one end of the upper side arc piece is fixedly connected with the top end of the mounting plate, the other end of the upper side arc piece is fixedly connected with one end of an outlet arc piece, and the other end of the outlet arc piece is fixedly connected with the top surface of the shell; one end of the rear arc-shaped piece is fixedly connected with the bottom surface of the shell, and the side surface of the rear arc-shaped piece is fixedly connected with the inner side wall of the shell;
the third cleaning part comprises a support frame hinged to one end of the upper side arc piece close to the outlet arc piece, the support frame is far away from the upper side arc piece and the other end of the rear side arc piece, and filter cotton is paved on the support frame.
Preferably, the support frame is kept away from the one end of upside arc piece is installed the couple, the rear side arc piece is kept away from the one end fixedly connected with fixture block of casing bottom surface, the fixture block with the couple corresponds the setting, the support frame with the rear side arc piece passes through the fixture block the couple can be dismantled and connect.
Preferably, the two opposite sides of the flap door are hinged with one ends of a first connecting rod and a second connecting rod, the second connecting rod is located above the first connecting rod, the other end of the second connecting rod is hinged with the outer wall of the shell, and the other end of the first connecting rod is connected with the middle of the second connecting rod in a sliding mode.
Preferably, one side of the second connecting rod, which is close to the first connecting rod, is fixedly connected with a sliding block, the first connecting rod is provided with a sliding groove matched with the sliding block, and the first connecting rod and the second connecting rod are connected in a sliding manner through the sliding block and the sliding groove.
Preferably, the opening and closing angle between the mounting plate and the turning plate is 0-120 degrees.
Preferably, a long hole is formed in the contact surface of the flow channel and the bottom surface of the shell, and the waste liquid tank is communicated with the flow channel through the long hole.
Preferably, a spring piece is arranged between the filter cotton and the pressing disc, and two sides of the spring piece are respectively hinged with the filter cotton and the pressing disc.
The invention discloses the following technical effects:
1. the invention can clean the internal flow passage of the spray gun, simultaneously sets multiple filter cotton to reduce the speed and absorb the high-speed gas-liquid two-phase flow, and is provided with a special flow passage structure to realize flow guide, reduce the dispersion of liquid fog, and weaken the pollution of the volatile and dispersed cleaning liquid to air and the damage to human body when the internal flow passage of the spray gun is cleaned.
2. Simple profile modeling is made to the entry, can not produce the interference with the spray gun, and the net lining sets to inclination with belt cleaning device casing, accords with the paint spraying workman and uses the custom of spray gun.
3. The internal flow passage cleaning device and the functional frame are modularized, and are convenient to disassemble, repair and transport.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is an isometric view of a pneumatic spray gun internal flow passage cleaning apparatus of the present invention;
FIG. 2 is a front view of a pneumatic spray gun internal flow passage cleaning apparatus of the present invention;
FIG. 3 is an isometric view of an open access flap of a pneumatic spray gun internal flow passage cleaning apparatus of the present invention;
FIG. 4 is a cross-sectional view taken along line B-B of FIG. 2;
FIG. 5 is a cross-sectional view taken along line D-D of FIG. 2;
FIG. 6 is a simulation of the spray gun during cleaning of the internal flow passage
FIG. 7 is an isometric view of an upper arcuate segment of a pneumatic spray gun internal flow passage cleaning apparatus of the present invention;
FIG. 8 is an isometric view of a pressure plate of a pneumatic spray gun internal flow passage cleaning apparatus of the present invention;
FIG. 9 is an isometric view of an oil screen of a pneumatic spray gun internal flow passage cleaning device of the present invention;
FIG. 10 is an isometric view of a rear arcuate segment of a pneumatic spray gun internal flow passage cleaning apparatus of the present invention;
fig. 11 is a flow chart of gas entering after the flow passage structure is optimized.
The device comprises a shell-1, a shell-11, a flap-12, a second connecting rod-13, a first connecting rod-14, a flap-21, an inserting hole-22, a hinge-23, a chain-24, a bolt-25, a pressing disc-26, filter cotton-27, an oil screen-28, a mounting plate-29, a flow channel-3, a rear arc-shaped sheet-31, an upper arc-shaped sheet-32, a front arc-shaped sheet-33, a support frame-41, a hook-42, an outlet arc-shaped sheet-43, a porous frame-44, a filter layer-45, a waste liquid tank-46 and a spray gun-5.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
The invention provides a cleaning device for an internal flow passage of a pneumatic spray gun, which comprises a shell 1, wherein the shell 1 comprises a shell 11 and a flap door 12 rotatably connected to one side of the shell 11, the interior of the shell 11 is fixedly connected with a flow passage 3, a first cleaning part is arranged at the inlet of the flow passage 3, and the first cleaning part is arranged corresponding to the flap door 12; the other end of the flow channel 3 is provided with a second cleaning part which is positioned on the top surface of the shell 11 and is communicated with the outside of the shell 11, the bottom surface of the shell 11 is fixedly connected with a waste liquid tank 46, and the top surface of the waste liquid tank 46 is communicated with the bottom surface of the flow channel 3; the flow channel 3 is internally provided with a third cleaning part which is positioned between the first cleaning part and the second cleaning part.
Further, for making things convenient for 11 lateral walls of casing to open and shut, improve the convenience that the device used, it all articulates the one end that has head rod 14 and second connecting rod 13 to turn over the relative both sides of door 12, and second connecting rod 13 is located head rod 14 top, and the second connecting rod 13 other end is articulated with 11 outer walls of casing, and the head rod 14 other end and the sliding connection in second connecting rod 13 middle part. While the length of the first connecting rod 14 is greater than the length of the second connecting rod 13. The rotation axis of the turnover door 12 is made through the second connecting rod 13, the turnover door 12 is limited, the first connecting rod 14 which is connected to the second connecting rod 13 in a sliding mode is used for supporting the turnover door 12, a triangular structure is formed among the first connecting rod 14, the second connecting rod 13 and the turnover door 12, and the stability of the turnover door 12 in the rotation process is guaranteed.
Further, in order to ensure that the first connecting rod 14 can stably slide on the second connecting rod 13, a sliding block is fixedly connected to one side, close to the first connecting rod 14, of the second connecting rod 13, a sliding groove matched with the sliding block is formed in the first connecting rod 14, and the first connecting rod 14 is slidably connected with the second connecting rod 13 through the sliding block and the sliding groove; the slider is the T type, and less one end diameter is less than the spout width, and great one end diameter is greater than the spout width, guarantees that the slider spout is spacing to head rod 14 when stablizing sliding fit, avoids following both sides roll-off.
Further, in order to carry out preliminary cleaning on high-speed gas-liquid two-phase flow which is sprayed out of the spray gun 5 and carries cleaning liquid and paint, a first cleaning part is arranged at the inlet of the flow channel 3, the first cleaning part comprises a mounting plate 29 fixedly connected to one end of the flow channel 3, a mounting hole is formed in the mounting plate 29, an oil screen 28 is detachably connected in the mounting hole, the bottom end of a turning plate 21 is hinged to one side, away from the flow channel 3, of the mounting plate 29, and the top end of the turning plate 21 is detachably connected with the mounting plate 29; one side of the turning plate 21 close to the oil net 28 is fixedly connected with a pressing disc 26, the pressing disc 26 is abutted against the oil net 28, filter cotton 27 is arranged between the pressing disc 26 and the oil net 28, and the filter cotton 27 is detachably connected with the pressing disc 26; an insertion hole 22 for inserting the spray gun 5 is formed in the turning plate 21, the insertion hole 22 and the pressing disc 26 are coaxially arranged, one end of a chain 24 is fixedly connected to two sides of the turning plate 21, and the other end of the chain 24 is fixedly connected with the mounting plate 29; the insertion holes 22 and the pressing disc 26 are both provided with a profiling groove, so that interference of the spray gun 5 when the spray gun 5 cleans the flow channel 3 when the inlet of the flow channel 3 is positioned at the spray gun 5 is avoided, partial cleaning liquid and paint sprayed by the spray gun 5 are absorbed through the filter cotton 27, and the speed of air flow is reduced under the action of the filter screen. In order to conveniently change the filter cotton 27, the bottom end of the turning plate 21 is hinged with the mounting plate 29, the top of the turning plate 21 and the top of the mounting plate 29 are correspondingly provided with threaded holes, and the turning plate 21 and the mounting plate 29 are detachably connected through a bolt 25, so that the filter cotton 27 on the pressure disc 26 can be conveniently taken out and replaced. The mounting plate 29 is obliquely arranged, the inclination angle is 75-80 degrees, so that the use habit of an operator is met, the hinge 23 is fixedly connected to the bottom end of the mounting plate 29, and the turning plate 21 is hinged to the mounting plate 29 through the hinge 23.
Further, for filtering exhaust gas, the long through hole has been seted up to casing 11 top surface, sets up the clean portion of second in the long through hole, and the clean portion of second is including placing porous frame 44 in the long through hole, and porous frame 44 lateral wall can be dismantled with casing 11 top and be connected, has laid filter layer 45 in the porous frame 44, and porous frame 44 top surface fixedly connected with handle. The filter layer 45 is preferably an activated carbon layer, through which the exhaust gas is filtered, so as to avoid an excessively high content of harmful substances in the exhaust gas.
Furthermore, in order to facilitate the spray gun 5 to spray gas to wash the interior of the flow channel 3, the waste liquid flows into the waste liquid tank 46 along the side wall of the flow channel 3, and the flow channel 3 comprises a front arc piece 33, a rear arc piece 31 and an upper arc piece 32 which are fixedly connected in the shell 11; one end of the front arc piece 33 is fixedly connected with the bottom end of the mounting plate 29, and the other end is fixedly connected with the bottom surface of the shell 11; one end of the upper arc sheet 32 is fixedly connected with the top end of the mounting plate 29, the other end is fixedly connected with one end of an outlet arc sheet 43, and the other end of the outlet arc sheet 43 is fixedly connected with the top surface of the shell 11; one end of the rear arc-shaped piece 31 is fixedly connected with the bottom surface of the shell 11, and the side surface of the rear arc-shaped piece 31 is fixedly connected with the inner side wall of the shell 11; the corner directions of the flow channel 3 are set to be arc-shaped transition so that the cleaning solution can flow into the waste liquid groove 46 along the inner wall of the flow channel 3 after being washed, and the specific washing effect of the spray gun is shown in the attached figure 11 of the specification.
For further assurance to the clean effect of internal flow channel 3, avoid getting into the inside cleaning solution of runner 3 and paint and blow off from the clean portion of second under the blowing effect of spray gun 5, set up the clean portion of third in the runner 3, the clean portion of third is including articulating the support frame 41 that is close to export arc piece 43 one end at upside arc piece 32, support frame 41 is kept away from upside arc piece 32 and can be dismantled with the rear side arc piece 31 other end and be connected, support frame 41 upper berth is equipped with filter pulp 27. Utilize filter pulp 27 to filter cleaning solution and paint and avoid its influence second clean portion to the filtration of waste gas, absorb the waste liquid through filter pulp 27, prevent simultaneously that the waste liquid from flowing out runner 3
Further, for the convenience is changed to the filter pulp 27 on the support frame 41, the support frame 41 is kept away from the one end of upside arc piece 32 and is installed couple 42, and the one end fixedly connected with fixture block of casing 11 bottom surface is kept away from to rear side arc piece 31, and the fixture block corresponds the setting with couple 42, and support frame 41 passes through fixture block, couple 42 with rear side arc piece 31 and can dismantle the connection. The support frame 41 can be fixed by directly hanging the hook 42 on the fixture block, and when the support frame 41 needs to be disassembled and assembled, the support frame 41 can rotate in the flow channel 3 by taking off the hook 42 from the fixture block, so that the filter cotton 27 can be conveniently replaced.
Furthermore, in order to ensure that the filter cotton 27 on the pressure disc 26 can be taken out and replaced after use, the opening and closing angle between the mounting plate 29 and the turning plate 21 is 0-120 degrees, so that the rotation of the turning plate 21 can drive the pressure disc 26 to be directly turned out to replace the filter cotton.
Further, in order to ensure that the waste liquid after washing can flow into the waste liquid tank 46, a long hole is formed on the contact surface of the flow channel 3 and the bottom surface of the housing 11, and the waste liquid tank 46 is communicated with the flow channel 3 through the long hole.
Furthermore, in order to prevent the pressure plate 26 and the filter cotton 27 from being bonded under the long-time extrusion action and cannot be taken down for replacement, a spring piece is arranged between the filter cotton 27 and the pressure plate 26, one side of the spring piece is detachably connected with the filter cotton 27 through a bolt, and the other side of the spring piece is fixedly connected with the pressure plate 26. The pressing disc 26 is separated from the filter cotton 27 by the elasticity of the spring piece, so that the filter cotton is convenient to replace.
When the device is used, the flap door 12 is firstly opened, the spray gun 5 is inserted into the insertion hole 22 on the flap 21, the spray gun 5 is opened to clean the internal flow passage 3, the filter cotton 27 on the pressing disc 26 firstly absorbs the cleaning solution sprayed by the spray gun 5 to realize preliminary cleaning, the speed of the gas sprayed by the spray gun 5 is reduced under the action of the filter cotton 27, the gas enters the internal flow passage 3 through the holes on the oil net 28 to wash the paint on the internal flow passage 3, the filter cotton 27 on the support frame 41 absorbs the cleaning solution and the paint again, the mixed waste liquid enters the waste liquid groove 46 through the side wall of the internal flow passage 3, and the waste gas emitted by the paint and the cleaning solution is discharged through the holes on the porous frame 44, then is absorbed and filtered by the filter layer 45 and finally discharged. After use, the bolt 25 on the turning plate 21 is detached, the turning plate 21 is opened, and the filter cotton 27 on the pressure disc 26 is taken down for replacement; the hanging hook 42 is taken off, and the filter cotton 27 on the supporting frame 41 can be replaced.
The invention can clean the internal flow passage 3 of the spray gun 5, is provided with multiple filter cotton 27 for reducing the speed and absorbing the high-speed gas-liquid two-phase flow, is provided with a special flow passage 3 structure for realizing flow guide, reduces the dispersion of liquid fog, and weakens the pollution of cleaning liquid volatilization and dispersion to air and the damage to human body when the internal flow passage 3 of the spray gun 5 is cleaned.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.
Claims (8)
1. The cleaning device for the internal flow passage of the pneumatic spray gun is characterized by comprising a shell (1), wherein the shell (1) comprises a shell (11) and a turnover door (12) rotatably connected to one side of the shell (11), the shell (11) is internally and fixedly connected with a flow passage (3), a first cleaning part is arranged at the inlet of the flow passage (3), and the first cleaning part is arranged corresponding to the turnover door (12); a second cleaning part is arranged at the other end of the flow channel (3), the second cleaning part is positioned on the top surface of the shell (11) and is communicated with the outside of the shell (11), a waste liquid groove (46) is fixedly connected to the bottom surface of the shell (11), and the top surface of the waste liquid groove (46) is communicated with the bottom surface of the flow channel (3); a third cleaning part is arranged in the flow channel (3), and is positioned between the first cleaning part and the second cleaning part;
the first cleaning part comprises a mounting plate (29) fixedly connected to one end of the flow channel (3), a mounting hole is formed in the mounting plate (29), an oil screen (28) is detachably connected in the mounting hole, one side, far away from the flow channel (3), of the mounting plate (29) is hinged to the bottom end of a turning plate (21), and the top end of the turning plate (21) is detachably connected with the mounting plate (29); a pressing disc (26) is fixedly connected to one side, close to the oil net (28), of the turning plate (21), the pressing disc (26) is abutted against the oil net (28), filter cotton (27) is arranged between the pressing disc (26) and the oil net (28), and the filter cotton (27) is detachably connected with the pressing disc (26); an insertion hole (22) for inserting a spray gun (5) is formed in the turning plate (21), the insertion hole (22) and the pressure disc (26) are coaxially arranged, one end of a chain (24) is fixedly connected to two sides of the turning plate (21), and the other end of the chain (24) is fixedly connected with the mounting plate (29);
the flow channel (3) comprises a front side arc sheet (33), a rear side arc sheet (31) and an upper side arc sheet (32) which are fixedly connected in the shell (11); one end of the front side arc-shaped piece (33) is fixedly connected with the bottom end of the mounting plate (29), and the other end of the front side arc-shaped piece is fixedly connected with the bottom surface of the shell (11); one end of the upper side arc piece (32) is fixedly connected with the top end of the mounting plate (29), the other end of the upper side arc piece is fixedly connected with one end of an outlet arc piece (43), and the other end of the outlet arc piece (43) is fixedly connected with the top surface of the shell (11); one end of the rear arc-shaped piece (31) is fixedly connected with the bottom surface of the shell (11), and the side surface of the rear arc-shaped piece (31) is fixedly connected with the inner side wall of the shell (11);
third cleaning portion is including articulating upside arc piece (32) are close to support frame (41) of export arc piece (43) one end, support frame (41) are kept away from upside arc piece (32) with the connection can be dismantled to rear side arc piece (31) other end, support frame (41) upper berth is equipped with filter pulp (27).
2. The cleaning device for the internal flow passage of the pneumatic spray gun according to claim 1, wherein: the long through hole has been seted up to casing (11) top surface, the clean portion of second is including placing porous frame (44) in the long through hole, porous frame (44) lateral wall with casing (11) top can be dismantled and be connected, filter layer (45) have been laid in porous frame (44), porous frame (44) top surface fixedly connected with handle.
3. The cleaning device for the internal flow passage of the pneumatic spray gun according to claim 1, wherein: keep away from support frame (41) couple (42) are installed to the one end of upside arc piece (32), rear side arc piece (31) are kept away from the one end fixedly connected with fixture block of casing (11) bottom surface, the fixture block with couple (42) correspond the setting, support frame (41) with rear side arc piece (31) pass through the fixture block couple (42) can be dismantled and connect.
4. The cleaning device for the internal flow passage of the pneumatic spray gun according to claim 1, wherein: the two opposite sides of the flap door (12) are hinged with one ends of a first connecting rod (14) and a second connecting rod (13), the second connecting rod (13) is located above the first connecting rod (14), the other end of the second connecting rod (13) is hinged with the outer wall of the shell (11), and the other end of the first connecting rod (14) is connected with the middle of the second connecting rod (13) in a sliding mode.
5. The cleaning device for the internal flow passage of the pneumatic spray gun according to claim 4, wherein: one side, close to the first connecting rod (14), of the second connecting rod (13) is fixedly connected with a sliding block, a sliding groove matched with the sliding block is formed in the first connecting rod (14), and the first connecting rod (14) and the second connecting rod (13) are connected in a sliding mode through the sliding block and the sliding groove.
6. The cleaning device for the internal flow passage of the pneumatic spray gun according to claim 1, wherein: the opening and closing angle between the mounting plate (29) and the turning plate (21) is 0-120 degrees.
7. The cleaning device for the internal flow passage of the pneumatic spray gun according to claim 1, wherein: and a long hole is formed in the contact surface of the flow channel (3) and the bottom surface of the shell (11), and the waste liquid groove (46) is communicated with the flow channel (3) through the long hole.
8. The cleaning device for the internal flow passage of the pneumatic spray gun according to claim 1, wherein: a spring piece is arranged between the filter cotton (27) and the pressing disc (26), one side of the spring piece is detachably connected with the filter cotton (27), and the other side of the spring piece is fixedly connected with the pressing disc (26).
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| CN202111018830.3A CN113522594B (en) | 2021-09-01 | 2021-09-01 | Cleaning device for internal flow passage of pneumatic spray gun |
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| CN202111018830.3A CN113522594B (en) | 2021-09-01 | 2021-09-01 | Cleaning device for internal flow passage of pneumatic spray gun |
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| CN113522594B true CN113522594B (en) | 2022-05-03 |
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