Spraying device and method for composite thin spraying material

Abstract

The invention provides a composite thin spraying material spraying device and method, and belongs to the technical field of material spraying, the composite thin spraying material spraying device comprises a first charging barrel, a second charging barrel, a stirrer and a discharging pipeline, a first three-way valve is arranged on the discharging pipeline, a connecting pipe is connected to the discharging pipeline, and a sliding rod and a lead screw are arranged in the connecting pipe; the bottom of the sliding rod is connected with a filter screen; the stirrer comprises a stirring frame, a stirring shaft, a rotating wheel and an eccentric column; a circulating pipe is connected between the connecting pipe and the first charging barrel / the second charging barrel, a piston is connected into the circulating pipe, a piston rod at the end of the piston is connected to the eccentric column, and a water inlet pipe is connected to the connecting pipe. The mode that the first charging barrel and the second charging barrel are alternately used is adopted, and the spraying efficiency is improved; the discharge pipeline and the filter screen can be washed, so that the blockage of the discharge pipeline caused by materials is reduced; the prepared materials reach the discharging pipeline through the circulating pipe, the discharging pipeline is filled with the materials, and spraying can be conveniently conducted after the first three-way valve is switched.

Description

Technical Field

[0001] The invention relates to the technical field of material spraying, and in particular to a composite thin-spray material spraying device and method. Background Art

[0002] Thin-film spray materials are usually sprayed with pneumatic sprayers. The principle is to control the airflow to instantly push the air distribution reversing device to reverse, so that the piston of the pneumatic motor can reciprocate stably and continuously, pressurize the inhaled paint, and transport the paint to the spray gun of the sprayer through a high-pressure hose. The spray gun instantly atomizes the paint and releases it to the surface of the object to be coated. In the prior art, the sprayer usually has only one barrel. After spraying a barrel of material, it needs to be shut down and re-mixed. The overall spraying efficiency is low. When spraying is performed by alternating two barrels, since the pneumatic pump needs to be connected to the barrel through the discharge pipe and the joint, when the material inside the barrel is sprayed, there will be residual material inside the discharge pipe. If these materials are not cleaned in time, the discharge pipe will be blocked, affecting subsequent normal use.

[0003] The patent application document with publication number CN104907209A discloses a heated double-barrel environmentally friendly paint sprayer, including a housing, a material placement barrel inside the housing, the material placement barrel including two stirrers whose bottom ends are connected by a cluster tube to form a three-way, the outer layer of the stirrer is provided with a heating layer filled with heat-conducting oil, the outer side of the heating layer is provided with a heat-insulating layer 1, and the heat-insulating layer 1 is filled with Class A heat-insulating material; the stirrer is provided with a matching stirring system, the housing is also provided with a feed port and an air outlet matching the opening of the stirrer, and a fume purification system is provided in the stirrer corresponding to the air outlet. The sprayer uses two stirrers to place more materials, but when the materials in one stirrer are used up, the technical problem of residual materials in the discharge pipe and easy clogging of the discharge pipe is not solved. Summary of the invention

[0004] In view of this, the present invention provides a composite thin-film spray material spraying device and method, aiming to solve the technical problem in the prior art that a discharge pipe is easily blocked when a double barrel is replaced.

[0005] In order to solve the above technical problems, on the one hand, the present invention provides a composite thin-spray material spraying device, comprising a barrel 1, a barrel 2, a stirrer respectively arranged in the barrel 1 and the barrel 2, and a discharge pipe respectively arranged at the lower part of the barrel 1 and the barrel 2, the discharge pipe is provided with a three-way valve 1, the discharge pipe is connected with a connecting pipe, a sliding rod and a lead screw connected to the sliding rod by a thread are provided in the connecting pipe, and a filter screen that can extend into the discharge pipe is connected to the bottom of the sliding rod; The agitator includes a stirring frame, a stirring shaft arranged below the stirring frame, wheels fixedly connected to the bottom end of the stirring frame and the top end of the stirring shaft respectively, and an eccentric column fixedly connected to the two wheels; a circulation pipe is fixedly connected between the connecting pipe and the barrel one / the barrel two, a piston capable of opening and closing the circulation pipe is slidably connected in the circulation pipe, a piston rod is fixedly connected to the end of the piston, the piston rod is connected to the eccentric column, a sealing plug capable of opening and closing the circulation pipe is fixedly connected to the sliding rod, a one-way valve is provided on the circulation pipe, and a water inlet pipe is connected to the connecting pipe.

[0006] By adopting the above technical scheme, the agitator stirs the materials in barrel one and barrel two. After the materials are mixed, the lead screw is rotated, and the sliding rod drives the filter screen to move down, so that the materials in the discharge pipe can be filtered, which is beneficial to improve the uniformity of spraying. Start the three-way valve one, the material in barrel one passes through the discharge pipe, is filtered by the filter screen, and is sprayed by the spray gun. When the material in barrel one is used up, switch the three-way valve one, and continue to spray with the material in barrel two. At the same time, the ingredients can be mixed in barrel one and stirred and mixed. The present invention adopts the method of alternating between barrel one and barrel two, without stopping the machine, and improving the spraying efficiency. Before mixing the ingredients in barrel one, water is passed through the water inlet pipe, and the water reaches the discharge pipe connected to barrel one through the connecting pipe, flushing the discharge pipe and the filter screen, reducing the blockage of the discharge pipe by the residual materials in the discharge pipe, and reducing the impact on the spraying efficiency. After cleaning, add the material into barrel one for stirring and mixing, the agitator rotates, the wheel drives the eccentric column to rotate, so that the piston reciprocates, and the circulation pipe is opened and closed. When the circulation pipe is opened, the material in barrel one enters the circulation pipe, passes through the connecting pipe, reaches the discharge pipe, and finally reaches barrel one. In this way, the water used to clean the discharge pipe flows into barrel one and mixes with the material. The discharge pipe is filled with material, which is convenient for spraying after the three-way valve is switched, thereby improving the spraying efficiency.

[0007] Preferably, the three-way valve is respectively connected to the two discharge pipes and the output pipe, the output pipe is connected to a pneumatic pump, the pneumatic pump is connected to a material outlet, and the material outlet is connected to a spray gun.

[0008] By adopting the above technical solution, the pneumatic pump draws out the material and sprays it through the spray gun. The three-way valve 1 connects the two discharge pipes for easy switching, thereby realizing the alternating use of the materials in the barrel 1 and the barrel 2, and improving the spraying efficiency.

[0009] Preferably, a three-way joint is connected to the three-way valve 1 and the discharge pipe, and the connecting pipe is connected to the three-way joint.

[0010] By adopting the above technical solution, through the switching of three-way valve 1, the materials in barrel 1 and barrel 2 can be output through the discharge pipe, and the water in the water inlet pipe can reach the discharge pipe through the connecting pipe to flush the discharge pipe and the filter.

[0011] Preferably, the two water inlet pipes are connected to a three-way valve 2, and the three-way valve 2 is also connected to a water inlet.

[0012] By adopting the above technical solution, the three-way valve 2 can control the delivery of water in the water inlet pipe and can be switched to facilitate flushing of the discharge pipe and the filter.

[0013] Preferably, the bottom of the sliding rod is fixedly connected to a plug plate capable of opening and closing the three-way joint, a limit block capable of limiting the sealing plug is fixedly provided in the connecting pipe, the sealing plug is slidably connected to the sliding rod, an elastic member is connected between the lower part of the sealing plug and the plug plate, and the lower part of the sealing plug is fixedly connected to a storage chamber capable of storing the filter.

[0014] By adopting the above technical solution, the plug plate can block the three-way joint, and the sealing plug can block the circulation pipe, so that the material in the discharge pipe can be smoothly transported to the spray gun. When it is necessary to flush the discharge pipe and the filter screen, the lead screw drives the slide bar to rise, the plug plate rises, the three-way joint is opened, water enters the water inlet pipe, and the water reaches the discharge pipe through the connecting pipe to flush the discharge pipe and the filter screen. After flushing, the materials are added in barrel one or barrel two, the lead screw drives the slide bar to rise again, the sealing plug rises, and the circulation pipe is opened. When the sealing plug contacts the limit block, the slide bar continues to rise, the sealing plug no longer rises, the storage chamber no longer rises, the elastic member is compressed, and the filter screen extends into the storage chamber, reducing the material passing through the circulation pipe and falling onto the filter screen, which is conducive to keeping the filter screen clean.

[0015] Preferably, a guide column is fixedly connected between the sealing plug and the receiving cavity, and the plug plate is slidably connected to the guide column.

[0016] By adopting the above technical solution, the guide column guides the sliding of the plug plate, making it easier for the filter screen to enter the storage cavity smoothly.

[0017] Preferably, the barrel one and the barrel two are respectively provided with pneumatic motors capable of driving the stirring frame to rotate, the stirring shaft is fixedly connected with blades, the end of the piston rod is fixedly connected with a ring, the ring is flat and is sleeved on the eccentric column.

[0018] By adopting the above technical solution, the pneumatic motor drives the stirring frame to rotate, and the stirring frame drives the impeller, the stirring shaft and the blades to rotate to stir and mix the materials. The eccentric column can slide in the sleeve, so that the eccentric column drives the piston to reciprocate, and the material can be pushed into the discharge pipe through the circulation pipe. When the three-way valve is switched, spraying can be achieved quickly.

[0019] On the other hand, the present invention provides a process for using the composite thin spray material spraying device, comprising the following steps: S1: Turn the lead screw, the slide bar moves down, the plug plate closes the three-way joint, and the three-way valve 1 is started. The material in the barrel 1 is filtered through the filter screen and then passes through the discharge pipe and the material outlet and is sprayed out from the spray gun. When the material in the barrel 1 is used up, the three-way valve 1 is switched, and the material in the barrel 2 is sprayed out from the spray gun; S2: Start the three-way valve 2, the water in the water inlet pipe flushes the filter screen and the discharge pipe, and then enters the barrel 1, the material is added into the barrel 1, the pneumatic motor drives the agitator to mix the material, the piston reciprocates, the screw close to the barrel 1 rotates in the opposite direction, the sliding rod drives the sealing plug to move up, the filter screen enters the storage chamber, the material passes through the circulation pipe and the connecting pipe in turn, and then fills the discharge pipe; S3: When the material in barrel 2 is used up, switch to barrel 1, flush the discharge pipe and filter screen of barrel 2, add materials into barrel 2 for mixing, and circulate in sequence.

[0020] By adopting the above technical scheme, the method of alternating between barrel one and barrel two is adopted, and there is no need to stop the machine, thereby improving the spraying efficiency; after the material in one barrel is used up, water is passed through the water inlet pipe to flush the discharge pipe and the filter screen, thereby reducing the blockage of the discharge pipe by the residual material in the discharge pipe and reducing the impact on the spraying efficiency; the prepared material can reach the discharge pipe through the circulation pipe, and the discharge pipe is filled with material, which is convenient for spraying after the three-way valve is switched, thereby improving the spraying efficiency; when the material in the circulation pipe enters the discharge pipe, the filter screen enters the receiving chamber, which is conducive to keeping the filter screen clean.

[0021] The beneficial effects of the above technical solution of the present invention are as follows: 1. The present invention adopts the mode of using barrel 1 and barrel 2 alternately, without stopping the machine, thus improving the spraying efficiency; after the material in one barrel is used up, water is passed through the water inlet pipe to flush the discharge pipe and the filter screen, thus reducing the blockage of the discharge pipe by the residual material in the discharge pipe and reducing the influence on the spraying efficiency; the prepared material can reach the discharge pipe through the circulation pipe, and the discharge pipe is filled with the material, which is convenient for spraying after the three-way valve is switched, thus improving the spraying efficiency.

[0022] 2. Three-way valve 2 can control the delivery of water in the water inlet pipe and can be switched to facilitate flushing of the discharge pipe and filter.

[0023] 3. When the material in the circulation pipe enters the discharge pipe, the filter screen enters the receiving chamber, which reduces the material passing through the circulation pipe and falls onto the filter screen, which is beneficial to keep the filter screen clean.

[0024] 4. The eccentric column is sleeved in the sleeve ring. The eccentric column can slide in the sleeve ring, which makes it easy for the eccentric column to drive the piston to reciprocate. The material can be pushed into the discharge pipe through the circulation pipe. When the three-way valve is switched, spraying can be achieved quickly. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the composite thin-spray material spraying device of the present invention; Figure 2 It is a structural schematic diagram of the barrel 1, the discharge pipe and the connecting pipe of the present invention; Figure 3 It is a structural schematic diagram of the agitator of the present invention; Figure 4 for Figure 3 The enlarged view of point A in the middle; Figure 5 It is a structural schematic diagram of the piston, piston rod and sleeve ring of the present invention; Figure 6 It is a structural schematic diagram of the lead screw and the slide rod of the present invention; Figure 7 It is a cross-sectional view of the interior of the connecting pipe of the present invention.

[0026] In the figure: 1. pneumatic motor; 2. agitator; 3. barrel 1; 4. lead screw; 5. connecting pipe; 6. material outlet; 7. pneumatic pump; 8. barrel 2; 9. discharge pipe; 10. three-way joint; 11. water inlet pipe; 12. three-way valve 2; 13. three-way valve 1; 14. circulation pipe; 15. one-way valve; 16. output pipe; 17. stirring frame; 18. eccentric column; 19. collar; 20. runner; 21. blade; 22. stirring shaft; 23. piston rod; 24. piston; 25. slide rod; 26. sealing plug; 27. elastic member; 28. plug plate; 29. ​​guide column; 30. storage chamber; 31. filter screen; 32. limit block. DETAILED DESCRIPTION

[0027] To make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the following will be combined with the embodiments of the present invention. Figure 1-Figure 7 , the technical scheme of the embodiment of the present invention is clearly and completely described. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0028] Example This embodiment provides a composite thin-film spray material spraying device, such as Figure 1 As shown, it includes barrel 1 3, barrel 2 8, a stirrer 2, and a discharge pipe 9.

[0029] like Figure 1 , Figure 3 , Figure 4 As shown, the agitator 2 is respectively arranged in the barrel 1 3 and the barrel 2 8, and the agitator 2 includes a stirring frame 17, a stirring shaft 22, a rotating wheel 20 and an eccentric column 18. The stirring shaft 22 is arranged below the stirring frame 17, the rotating wheel 20 is respectively fixedly connected to the bottom end of the stirring frame 17 and the top end of the stirring shaft 22, and the eccentric column 18 is fixedly connected to the two rotating wheels 20. The barrel 1 3 and the barrel 2 8 are respectively provided with an air motor 1 that can drive the stirring frame 17 to rotate, and the stirring shaft 22 is fixedly connected with a blade 21. The air motor 1 drives the stirring frame 17 to rotate, and the stirring frame 17 drives the rotating wheel 20, the stirring shaft 22 and the blade 21 to rotate, so as to stir and mix the materials.

[0030] like Figure 1 and Figure 2 As shown, the discharge pipe 9 is respectively arranged at the lower part of the barrel 1 3 and the barrel 2 8, and a three-way valve 13 is arranged on the discharge pipe 9, and the three-way valve 13 is respectively connected to the two discharge pipes 9 and the output pipe 16, and the output pipe 16 is connected to the pneumatic pump 7, and the pneumatic pump 7 is connected to the material outlet 6, and the material outlet 6 is connected to the spray gun. The pneumatic pump 7 extracts the material and sprays it through the spray gun. The three-way valve 13 connects the two discharge pipes 9, which is convenient for switching, so as to realize the alternating use of the materials in the barrel 1 3 and the barrel 2 8, and improve the spraying efficiency.

[0031] like Figure 1 As shown, the discharge pipe 9 is connected to a connecting pipe 5, a three-way valve 13 and the discharge pipe 9 are connected to a three-way joint 10, and the connecting pipe 5 is connected to the three-way joint 10. By switching the three-way valve 13, the materials in the barrel 1 3 and the barrel 2 8 can be discharged through the discharge pipe 9.

[0032] like Figure 2 , Figure 6 , Figure 7 As shown, a slide bar 25 and a lead screw 4 threadedly connected to the slide bar 25 are provided in the connecting pipe 5. A filter screen 31 that can be inserted into the discharge pipe 9 is connected to the bottom of the slide bar 25. By rotating the lead screw 4, the slide bar 25 and the filter screen 31 can be raised and lowered. The filter screen 31 filters the material in the discharge pipe 9, which is beneficial to improving the spraying effect. A handle is fixedly connected to the end of the lead screw 4. By rotating the handle, the lead screw 4 can be driven to rotate, thereby raising and lowering the slide bar 25.

[0033] like Figure 1 , Figure 3 , Figure 4 , Figure 5As shown, a circulation pipe 14 is fixedly connected between the connecting pipe 5 and the barrel 1 3 / barrel 2 8, a piston 24 that can open and close the circulation pipe 14 is slidably connected in the circulation pipe 14, a piston rod 23 is fixedly connected to the end of the piston 24, and a sleeve 19 is fixedly connected to the end of the piston rod 23. The sleeve 19 is flat and sleeved on the eccentric column 18. The eccentric column 18 can slide in the sleeve 19, so that the eccentric column 18 can drive the piston 24 to reciprocate. When the piston 24 moves to the farthest end away from the connecting pipe 5, the circulation pipe 14 is opened, and the material enters the circulation pipe 14 through the connection between the barrel 1 3 or the barrel 2 8 and the circulation pipe 14. The reciprocating motion of the piston 24 can push the material through the circulation pipe 14 into the discharge pipe 9. When the three-way valve 13 is switched, spraying can be quickly achieved.

[0034] like Figure 1 , Figure 6 , Figure 7 As shown, a sealing plug 26 capable of opening and closing the circulation pipe 14 is fixedly connected to the slide bar 25, and a one-way valve 15 is provided on the circulation pipe 14, and the one-way valve 15 allows the material to reach the connecting pipe 5 and the discharge pipe 9 from the circulation pipe 14. A plug plate 28 capable of opening and closing the three-way joint 10 is fixedly connected to the bottom of the slide bar 25, and a limit block 32 capable of limiting the position of the sealing plug 26 is fixedly provided in the connecting pipe 5. The sealing plug 26 is slidably connected to the slide bar 25, and an elastic member 27 is connected between the lower part of the sealing plug 26 and the plug plate 28, and a storage chamber 30 capable of storing the filter screen 31 is fixedly connected to the lower part of the sealing plug 26. The elastic member 27 is a spring or a compression spring, and the plug plate 28 can block the three-way joint 10, and the sealing plug 26 can block the circulation pipe 14, so that the material in the discharge pipe 9 can be smoothly transported to the spray gun. A guide post 29 is fixedly connected between the sealing plug 26 and the receiving chamber 30 , and the plug plate 28 is slidably connected to the guide post 29 , so that the filter screen 31 can smoothly enter the receiving chamber 30 .

[0035] like Figure 1 , Figure 7 As shown, a water inlet pipe 11 is connected between the two connecting pipes 5, and a three-way valve 2 12 is connected to the two water inlet pipes 11, and a water inlet is also connected to the three-way valve 2 12. The water in the water inlet pipe 11 can reach the discharge pipe 9 through the connecting pipe 5 to flush the discharge pipe 9 and the filter 31. The three-way valve 2 12 can control the transportation of water in the water inlet pipe 11 and can be switched to facilitate flushing the discharge pipe 9 and the filter 31.

[0036] When it is necessary to flush the discharge pipe 9 and the filter screen 31, the lead screw 4 drives the slide bar 25 to rise, the plug plate 28 to rise, the three-way joint 10 to open, the water inlet pipe 11 to enter the water, and the water reaches the discharge pipe 9 through the connecting pipe 5 to flush the discharge pipe 9 and the filter screen 31. After flushing, the materials are mixed in the barrel 1 3 or the barrel 2 8, the lead screw 4 drives the slide bar 25 to rise again, the sealing plug 26 to rise, and the circulation pipe 14 to open. When the sealing plug 26 contacts the limit block 32, the slide bar continues to rise, the sealing plug 26 no longer rises, the storage chamber 30 no longer rises, the elastic member 27 is compressed, and the filter screen 31 extends into the storage chamber 30, reducing the materials passing through the circulation pipe 14 from falling on the filter screen 31, which is conducive to keeping the filter screen 31 clean.

[0037] The agitator 2 stirs the materials in the barrel 1 3 and the barrel 2 8. After the materials are mixed, the screw 4 is rotated, and the slide rod 25 drives the filter 31 to move downward, so that the materials in the discharge pipe 9 can be filtered, which is beneficial to improve the uniformity of spraying. Start the three-way valve 13, the material in the barrel 1 3 passes through the discharge pipe 9, is filtered by the filter 31, and is sprayed by the spray gun. When the material in the barrel 1 3 is used up, the three-way valve 13 is switched, and the material in the barrel 2 8 is used to continue spraying. At the same time, the materials can be mixed in the barrel 1 3 and stirred and mixed. This embodiment adopts the method of alternating the use of barrel 1 3 and barrel 2 8, without stopping the machine, and improving the spraying efficiency. Before mixing the materials in the barrel 1 3, water is passed through the water inlet pipe 11, and the water reaches the discharge pipe 9 connected to the barrel 1 3 through the connecting pipe 5, and the discharge pipe 9 and the filter 31 are flushed, which reduces the blockage of the discharge pipe 9 by the residual materials in the discharge pipe 9 and reduces the impact on the spraying efficiency. After cleaning, the material is added into the barrel 3 for stirring and mixing, the stirrer 2 rotates, and the wheel 20 drives the eccentric column 18 to rotate, so that the piston 24 reciprocates, and the circulation pipe 14 is opened and closed. When the circulation pipe 14 is opened, the material in the barrel 3 enters the circulation pipe 14, passes through the connecting pipe 5, reaches the discharge pipe 9, and finally reaches the barrel 3. In this way, the water used to clean the discharge pipe 9 flows into the barrel 3 and mixes with the material. The discharge pipe 9 is filled with material, which is convenient for spraying after the three-way valve 13 is switched, thereby improving the spraying efficiency.

[0038] The composite thin spray material used in this embodiment is an existing technology, and the composite thin spray material contains the following raw materials: inorganic filler, high-standard white cement, polymer powder, quartz powder, titanium dioxide, redispersible latex powder, and calcium sulfoaluminate. Among them, the weight percentages of inorganic filler, high-standard white cement, polymer powder, quartz powder, titanium dioxide, redispersible latex powder, and calcium sulfoaluminate are: 36-44: 18-22: 13-17: 8-12: 4-6: 4-6: 2-3; when making, the above raw materials are mixed evenly and packaged for storage.

[0039] This embodiment provides a process for using a composite thin-spray material spraying device, comprising the following steps: S1: Turn the lead screw 4, the slide bar 25 moves downward, the plug plate 28 closes the three-way joint 10, and the three-way valve 13 is started. The material in the barrel 1 3 is filtered by the filter screen 31 and then passes through the discharge pipe 9 and the material outlet 6 and is sprayed out from the spray gun. When the material in the barrel 1 3 is used up, the three-way valve 13 is switched, and the material in the barrel 2 8 is sprayed out from the spray gun; S2: Start the three-way valve 2 12, the water in the water inlet pipe 11 flushes the filter 31 and the discharge pipe 9, and then enters the barrel 1 3, the barrel 1 3 is filled with materials, the pneumatic motor 1 drives the stirrer 2 to stir and mix the materials, the piston 24 reciprocates, and the screw 4 close to the barrel 1 3 rotates in the opposite direction, the slide rod 25 drives the sealing plug 26 to move upward, the filter 31 enters the storage chamber 30, the materials pass through the circulation pipe 14 and the connecting pipe 5 in turn, and then fill the discharge pipe 9; S3: When the material in the barrel 2 8 is used up, switch to the barrel 1 3, flush the discharge pipe 9 and the filter screen 31 of the barrel 2 8, add materials into the barrel 2 8 for mixing, and circulate in sequence.

[0040] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A composite thin-film spray material spraying device, comprising a barrel (3), a barrel (8), a stirrer (2) disposed in the barrel (3) and the barrel (8), respectively, and a discharge pipe (9) disposed at the lower part of the barrel (3) and the barrel (8), respectively, and a three-way valve (13) is disposed on the discharge pipe (9), characterized in that: The discharge pipe (9) is connected to a connecting pipe (5), a slide rod (25) and a lead screw (4) threadedly connected to the slide rod (25) are arranged in the connecting pipe (5), and a filter screen (31) capable of extending into the discharge pipe (9) is connected to the bottom of the slide rod (25); The stirrer (2) comprises a stirring frame (17), a stirring shaft (22) arranged below the stirring frame (17), a rotating wheel (20) respectively fixedly connected to the bottom end of the stirring frame (17) and the top end of the stirring shaft (22), and an eccentric column (18) fixedly connected to the two rotating wheels (20); a circulation pipe (14) is fixedly connected between the connecting pipe (5) and the barrel 1 (3) / barrel 2 (8); a piston (24) capable of opening and closing the circulation pipe (14) is slidably connected in the circulation pipe (14); a piston rod (23) is fixedly connected to the end of the piston (24); the piston rod (23) is connected to the eccentric column (18); a sealing plug (26) capable of opening and closing the circulation pipe (14) is fixedly connected to the sliding rod (25); a one-way valve (15) is provided on the circulation pipe (14); and a water inlet pipe (11) is connected to the connecting pipe (5).

2. The composite thin-spray material spraying device according to claim 1 is characterized in that: The three-way valve (13) is respectively connected to two discharge pipes (9) and an output pipe (16), the output pipe (16) is connected to a pneumatic pump (7), the pneumatic pump (7) is connected to a material outlet (6), and the material outlet (6) is connected to a spray gun.

3. The composite thin-spray material spraying device according to claim 2 is characterized in that: The three-way valve (13) and the discharge pipe (9) are connected to a three-way joint (10), and the connecting pipe (5) is connected to the three-way joint (10).

4. The composite thin-spray material spraying device according to claim 3 is characterized in that: The two water inlet pipes (11) are connected to a three-way valve 2 (12), and the three-way valve 2 (12) is also connected to a water inlet.

5. The composite thin-spray material spraying device according to claim 4 is characterized in that: A plug plate (28) capable of opening and closing the three-way joint (10) is fixedly connected to the bottom of the slide rod (25), a limit block (32) capable of limiting the position of the sealing plug (26) is fixedly provided in the connecting pipe (5), the sealing plug (26) is slidably connected to the slide rod (25), an elastic member (27) is connected between the lower part of the sealing plug (26) and the plug plate (28), and a storage chamber (30) capable of storing a filter screen (31) is fixedly connected to the lower part of the sealing plug (26).

6. The composite thin-spray material spraying device according to claim 5 is characterized in that: A guide column (29) is fixedly connected between the sealing plug (26) and the receiving cavity (30), and the plug plate (28) is slidably connected to the guide column (29).

7. The composite thin-spray material spraying device according to claim 6 is characterized in that: The first barrel (3) and the second barrel (8) are respectively provided with a pneumatic motor (1) capable of driving the stirring frame (17) to rotate; a blade (21) is fixedly connected to the stirring shaft (22); a sleeve (19) is fixedly connected to the end of the piston rod (23); the sleeve (19) is flat and sleeved on the eccentric column (18).

8. A process using the composite thin-spray material spraying device according to claim 7, characterized in that: The following steps are involved: S1: The lead screw (4) is rotated, the slide bar (25) moves downward, the plug plate (28) closes the three-way joint (10), and the three-way valve 1 (13) is started. The material in the barrel 1 (3) is filtered by the filter screen (31) and then passes through the discharge pipe (9) and the material outlet (6) and is sprayed out from the spray gun. When the material in the barrel 1 (3) is used up, the three-way valve 1 (13) is switched, and the material in the barrel 2 (8) is sprayed out from the spray gun. S2: start the three-way valve 2 (12), the water in the water inlet pipe (11) flushes the filter screen (31) and the discharge pipe (9), and then enters the barrel 1 (3), the material is added into the barrel 1 (3), the pneumatic motor (1) drives the stirrer (2) to stir and mix the material, the piston (24) reciprocates, the lead screw (4) close to the barrel 1 (3) rotates in the opposite direction, the slide rod (25) drives the sealing plug (26) to move upward, the filter screen (31) enters the storage chamber (30), the material passes through the circulation pipe (14), the connecting pipe (5) in turn, and then fills the discharge pipe (9); S3: When the material in barrel 2 (8) is used up, barrel 1 (3) is switched to flush the discharge pipe (9) and filter screen (31) of barrel 2 (8), and materials are added to barrel 2 (8) for mixing, and the cycle is repeated.

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