A spray device capable of filtering liquid medicine

Abstract

The present invention relates to the technical field of spraying devices, and discloses a spraying device capable of filtering medicine, comprising a spray gun body, a filter box fixed on the spray gun body, a medicine bottle arranged on the filter box, a heating rod for heating the medicine in the medicine bottle arranged on the filter box, a filter cavity arranged in the filter box, a movable groove opened in the filter box, a lifting plate slidingly arranged in the movable groove, a positioning frame fixed on the lifting plate, and a cleaning cylinder for cleaning the surface of the first filter screen arranged on the positioning frame; in the process of spraying the medicine, the cleaning cylinder is driven to move up and down along the surface of the first filter screen by the up and down movement of the lifting plate according to the technical solution, thereby facilitating the processing of impurities and particulate matter on the first filter screen, reducing the possibility of clogging of the first filter screen during the process of spraying the medicine, thereby affecting the effect of spraying.

Description

Technical Field

[0001] The invention relates to the technical field of spray devices, in particular to a spray device capable of filtering medicinal liquid. Background Art

[0002] A spray device is a device used to spray liquid. Liquid is placed at one end of the spray device, and the liquid can be sprayed out from the other end of the device. The shape and spraying speed of the liquid can be changed so that the liquid can be sprayed in an atomized form.

[0003] The existing spraying device for medicine liquid is similar in appearance to a spray gun. The medicine liquid is sprayed by pressing a control button on the spray gun. Before the medicine liquid is sprayed from the device, the impurities and particulate matter in the medicine liquid are filtered through a filter net arranged inside the device to ensure the purity of the sprayed medicine liquid and prevent the impurities and particulate matter from causing damage to the human body. However, during the spraying process, when the filter net filters the impurities and particulate matter, the impurities and particulate matter will be evenly adsorbed on the filter net, which is easy to clog the filter net, making it inconvenient for the medicine liquid to pass through the filter net and be sprayed, affecting the spraying effect. During use, if the filter net is clogged, it is necessary to stop the machine and disassemble and clean the filter net, which is troublesome and has a poor user experience. Summary of the invention

[0004] The present invention provides a spray device that can filter medicine liquid. When spraying medicine, the up and down movement of the lifting plate drives the cleaning cylinder to move up and down along the surface of the first filter screen, so as to process the impurities and particulate matter on the first filter screen, thereby solving the problem mentioned in the above background technology that the impurities and particulate matter will be evenly adsorbed on the filter screen, which is easy to clog the filter screen, making it inconvenient for the medicine liquid to pass through the filter screen and be sprayed, thereby affecting the spraying effect.

[0005] The present invention provides the following technical solution: a spray device capable of filtering liquid medicine, comprising a spray gun body, a filter box fixed on the spray gun body, a medicine bottle arranged on the filter box, a heating rod for heating the liquid medicine in the medicine bottle arranged on the filter box, a filter cavity arranged in the filter box, a positioning frame arranged at the port of the filter cavity, a first filter screen fixed in the positioning frame, a micro pump connected to the filter cavity arranged inside the spray gun body, and a water pipe arranged in communication with the output end of the micro pump;

[0006] A movable groove is provided in the filter box, a lifting plate is slidably arranged in the movable groove, a positioning frame is fixed on the lifting plate, a cleaning cylinder for cleaning the surface of the first filter screen is arranged on the positioning frame, a push plate is slidably arranged in the movable groove, the lifting plate is elastically connected to the push plate, an electric push rod is fixed on the filter box, and the output end of the electric push rod is connected to the push plate.

[0007] As an optional solution of the injection device capable of filtering medicinal liquid described in the present invention, a first spring is fixed between the lifting plate and the push plate, a connecting rod is fixed on the lifting plate, a second filter is fixed on the end of the connecting rod, and the second filter is slidably arranged inside the filter box.

[0008] As an optional solution of the spray device capable of filtering medicinal liquid according to the present invention, a limiting column is fixed on the outer surface of the lifting plate, and a limiting groove for sliding of the limiting column is provided inside the filter box.

[0009] As an optional solution of the injection device capable of filtering medicinal liquids described in the present invention, a rotating shaft is fixed to the end of the cleaning cylinder, the rotating shaft is rotatably connected to the positioning frame, the end of the rotating shaft is keyed to a gear, a rotating groove is opened on the inner wall of the filter box, a rack is fixed in the rotating groove, the gear is meshed with the rack, and the gear is rotatably arranged in the rotating groove.

[0010] As an optional solution of the injection device capable of filtering medicinal liquid described in the present invention, a plurality of groups of suction holes are provided on the surface of the cleaning cylinder, an air suction groove connected with the suction holes is provided inside the cleaning cylinder, an air suction pipe is provided at the end of the air suction groove, and the end of the air suction pipe is rotatably connected with the rotating shaft, a collecting groove is provided inside the filter box, and the end of the air suction pipe is connected with the collecting groove, a piston plate is slidably provided in the collecting groove, and a first transmission rod is fixed on the surface of the piston plate, and the first transmission rod passes through the collecting groove and is fixedly connected with the push plate.

[0011] As an optional scheme of the injection device capable of filtering medicinal liquid described in the present invention, a sealing plate for sealing the suction hole is elastically connected in the cleaning cylinder, a through groove is provided on the sealing plate, a resistance protrusion is fixed on the end of the sealing plate, a circular ring is fixed on the circumference of the rotating shaft, a top rod for resisting with the positioning frame is elastically connected to the circular ring, a second transmission rod is fixed on the top rod, a slideway for sliding the sealing plate is provided on the second transmission rod, and a resistance groove for sliding the resistance protrusion is provided on the inner wall of the slideway.

[0012] As an optional solution of the spray device capable of filtering medicinal liquid according to the present invention, a first slide groove is provided inside the cleaning cylinder, a second spring is arranged in the first slide groove, a convex plate is fixed on the blocking plate, the convex plate is slidably arranged in the first slide groove, and an end of the second spring is fixedly connected to the convex plate.

[0013] As an optional solution of the spray device capable of filtering medicinal liquid according to the present invention, a second slide groove is provided inside the circular ring, a third spring is arranged in the second slide groove, a slide plate is fixed to the end of the push rod, the slide plate is slidably arranged in the second slide groove, and the end of the third spring is fixedly connected to the slide plate.

[0014] As an optional solution of the injection device capable of filtering medicinal liquid described in the present invention, a liquid outlet pipe is connected to the aggregate trough, the liquid outlet pipe is connected to the filter chamber, a third filter screen is provided at the end of the liquid outlet pipe, a first one-way valve is provided inside the air intake pipe, a second one-way valve is provided inside the liquid outlet pipe, an air outlet hole is provided at the bottom of the aggregate trough, and a cover plate for sealing the aggregate trough is provided on the filter box.

[0015] As an optional solution of the spray device capable of filtering medicine according to the present invention, a hot air blower is arranged inside the spray gun body, an air duct is arranged inside the spray gun body, the output end of the hot air blower is connected to the air duct, an air outlet is arranged at the end of the air duct, and an infrared emitter is fixed on the inner wall of the air outlet.

[0016] The present invention has the following beneficial effects:

[0017] 1. In the spraying device capable of filtering liquid medicine, when spraying medicine, the push plate is pushed downward by the electric push rod, the push plate drives the lifting plate to move downward, and the lifting plate drives the cleaning cylinder to move downward along the surface of the first filter screen, so that the cleaning cylinder can clean the impurities and particulate matter on the surface of the first filter screen to the bottom of the filter cavity, so that when spraying medicine, the impurities and particulate matter on the surface of the first filter screen are continuously processed by the up and down reciprocating motion of the cleaning cylinder, the possibility of the first filter screen being blocked is reduced, the spraying effect is increased, and the situation that the first filter screen is blocked and the spraying cannot be caused during the spraying process is effectively avoided.

[0018] 2. In the spray device capable of filtering liquid medicine, during the up and down movement of the cleaning barrel, the gear slides inside the rotating groove, and the gear can rotate while sliding up and down through the action of the rack. The rotation of the gear drives the rotating shaft to rotate, and the rotation of the rotating shaft drives the cleaning barrel to rotate. The rotation of the cleaning barrel can not only change the contact surface between the cleaning barrel and the first filter screen, avoiding that one side of the cleaning barrel and the first filter screen are always in contact with each other, thereby reducing wear, but also change the flow direction of liquid medicine around the cleaning barrel through the rotation of the cleaning barrel, thereby making it easier to remove impurities and particulate matter from the first filter screen, thereby making it easier to clean impurities and particulate matter on the first filter screen, thereby further increasing the cleaning effect of impurities and particulate matter.

[0019] 3. In the spray device capable of filtering the liquid medicine, the push plate moves downward to drive the piston plate to move downward, and the piston plate moves downward to generate negative pressure in the collecting tank. When the cleaning cylinder rotates, the impurities and particulate matter on the first filter screen can be adsorbed by opening and closing the suction hole, and the impurities and particulate matter can be sucked into the collecting tank for collection, thereby further improving the cleaning effect of the impurities and particulate matter on the first filter screen and reducing the possibility of clogging of the first filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0021] Figure 2 It is a schematic diagram of the three-dimensional structure of the end of the spray gun body of the present invention.

[0022] Figure 3 It is a cross-sectional view of the internal structure of the spray gun body and the filter box of the present invention.

[0023] Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle.

[0024] Figure 5 It is a schematic diagram of the three-dimensional structure of the first filter screen part of the present invention.

[0025] Figure 6 For the present invention Figure 5 Enlarged view of point B in the middle.

[0026] Figure 7 For the present invention Figure 6 Enlarged view of center C.

[0027] Figure 8 The figure is a schematic diagram of the structure of the connection between the gear and the rack of the present invention.

[0028] Fig. 9 It is a cross-sectional view of the internal structure of the circular ring part of the present invention.

[0029] Fig.10 It is a top view of the structure of the cleaning tube part of the present invention.

[0030] Fig.11 For the present invention Fig.10 Enlarged view of point D in the middle.

[0031] Fig.12 For the present invention Fig.10 Enlarged view of point E in the middle

[0032] Fig.13 It is a schematic diagram of the three-dimensional structure of the aggregate trough part of the present invention.

[0033] Fig.14 It is a top view of the structure of the aggregate trough part of the present invention.

[0034] In the figure: 1. spray gun body; 2. filter box; 3. medicine bottle; 4. heating rod; 5. filter chamber; 6. positioning frame; 7. first filter screen; 8. micro pump; 9. water pipe; 10. movable groove; 11. lifting plate; 12. positioning frame; 13. cleaning cylinder; 14. push plate; 15. electric push rod; 16. first spring; 17. connecting rod; 18. second filter screen; 19. limiting column; 20. limiting groove; 21. rotating shaft; 22. gear; 23. rotating groove; 24. rack; 25. suction hole; 26. suction groove; 27. suction pipe; 28. collecting groove; 29. Piston plate; 30. First transmission rod; 31. Sealing plate; 32. Through groove; 33. Interference protrusion; 34. Ring; 35. Push rod; 36. Second transmission rod; 37. Slideway; 371. Interference groove; 38. First slide groove; 39. Second spring; 40. Protruding plate; 41. Second slide groove; 42. Third spring; 43. Slide plate; 44. Liquid outlet pipe; 45. Third filter; 46. First one-way valve; 47. Second one-way valve; 48. Air outlet; 49. Cover plate; 50. Hot air blower; 51. Air duct; 52. Air outlet; 53. Infrared transmitter. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] For example, see Figure 1-Figure 14 , a spray device capable of filtering liquid medicine, comprising a spray gun body 1, a filter box 2 is fixed on the spray gun body 1, a medicine bottle 3 is arranged on the filter box 2, a heating rod 4 for heating the liquid medicine inside the medicine bottle 3 is arranged on the filter box 2, a filter cavity 5 is arranged in the filter box 2, a positioning frame 6 is arranged at the port of the filter cavity 5, a first filter screen 7 is fixed in the positioning frame 6, a micro pump 8 connected with the filter cavity 5 is arranged inside the spray gun body 1, and a water pipe 9 is arranged in communication with the output end of the micro pump 8;

[0037] A movable groove 10 is provided in the filter box 2, a lifting plate 11 is slidably provided in the movable groove 10, a positioning frame 12 is fixed on the lifting plate 11, a cleaning cylinder 13 for cleaning the surface of the first filter screen 7 is provided on the positioning frame 12, a push plate 14 is slidably provided in the movable groove 10, the lifting plate 11 is elastically connected to the push plate 14, an electric push rod 15 is fixed on the filter box 2, and the output end of the electric push rod 15 is connected to the push plate 14;

[0038] A first spring 16 is fixed between the lifting plate 11 and the push plate 14, a connecting rod 17 is fixed on the lifting plate 11, a second filter screen 18 is fixed at the end of the connecting rod 17, and the second filter screen 18 is slidably arranged inside the filter box 2;

[0039] A limiting column 19 is fixed on the outer surface of the lifting plate 11, and a limiting groove 20 for the limiting column 19 to slide is provided inside the filter box 2;

[0040] A hot air blower 50 is disposed inside the spray gun body 1, and an air duct 51 is disposed inside the spray gun body 1. The output end of the hot air blower 50 is connected to the air duct 51, and an air outlet 52 is disposed at the end of the air duct 51. An infrared emitter 53 is fixed on the inner wall of the air outlet 52;

[0041] In the present technical solution, the medicine bottle 3 is fixed on the filter box 2 by a threaded connection, which is convenient for disassembly, assembly and replacement of the medicine bottle 3. The medicine solution inside the medicine bottle 3 is heated by the heating rod 4 to control the temperature of the medicine solution. When spraying the medicine, the micro pump 8 is first started to make the micro pump 8 extract the medicine solution from the inside of the filter chamber 5. When the medicine solution passes through the first filter screen 7, the medicine solution is filtered to filter out impurities and particulate matter in the medicine solution. The extracted medicine solution is sprayed out through the water pipe 9 and sprayed to the part that needs to be conditioned (such as the disc floor muscle). Then, hot air is blown out from the air outlet 52 through the hot air blower 50 and the air duct 51, and the infrared emitter 53 is used to emit heating infrared rays, which promotes blood circulation, relieves muscle tension and accelerates deep tissue repair for the disc floor muscle.

[0042] When the first filter screen 7 filters the liquid medicine, the electric push rod 15 pushes the push plate 14 to move downward, and the push plate 14 drives the lifting plate 11 to move downward, and the lifting plate 11 drives the cleaning cylinder 13 to move downward. The surface of the cleaning cylinder 13 contacts the surface of the first filter screen 7, and there is only a small friction force. When the cleaning cylinder 13 moves downward, the impurities and particulates filtered on the surface of the first filter screen 7 can be scraped off, so that the impurities and particulates filtered by the first filter screen 7 are all cleaned to the bottom of the filter chamber 5, so that the impurities and particulates will not be located in the first filter. Each part of the filter screen 7 effectively prevents the first filter screen 7 from being blocked by impurities and particles, thereby affecting the spraying effect; when the cleaning cylinder 13 cleans the impurities and particles to the bottom of the filter chamber 5, it will affect the downward movement distance of the lifting plate 11. When the lifting plate 11 is blocked by the impurities and particles at the bottom of the filter chamber 5 and cannot continue to move downward, the first spring 16 is compressed by the push plate 14, the first spring 16 accumulates force, and the push plate 14 is pushed downward by the electric push rod 15 to continue to move a distance, so that the electric push rod 15 can continue to work without getting stuck;

[0043] In the process of the cleaning cylinder 13 moving downward along the first filter screen 7, the lifting plate 11 drives the second filter screen 18 to move downward through the connecting rod 17, and extends the second filter screen 18 from the inside of the filter box 2, so that the second filter screen 18 can filter the medicine, so that when the cleaning cylinder 13 moves downward, the impurities and particulate matter in the medicine will not pass through the second filter screen 18 and enter the top of the cleaning cylinder 13, affecting the upward movement and reset of the cleaning cylinder 13. When the lifting plate 11 moves upward, the lifting plate 11 drives the second filter screen 18 to move upward, and the second filter screen 18 is retracted into the filter box 2. The second filter screen 18 is sealed and connected to the inner wall of the filter box 2. When the second filter screen 18 moves upward, the impurities and particulate matter filtered by the second filter screen 18 will be cleaned up by the inner wall of the filter box 2, and then filtered through the first filter screen 7 when spraying medicine.

[0044] In the second embodiment, since there is a certain friction between the cleaning cylinder 13 and the first filter screen 7 when the cleaning cylinder 13 moves downward, one side of the cleaning cylinder 13 is always in contact with the first filter screen 7. When the cleaning cylinder 13 reciprocates up and down, the side of the cleaning cylinder 13 in contact with the first filter screen 7 is worn. This embodiment is an improvement made on the basis of the first embodiment. For details, please refer to Figure 1-Figure 14 A rotating shaft 21 is fixed at the end of the cleaning cylinder 13, and the rotating shaft 21 is rotatably connected to the positioning frame 12. A gear 22 is keyed to the end of the rotating shaft 21. A rotating groove 23 is opened on the inner wall of the filter box 2. A rack 24 is fixed in the rotating groove 23. The gear 22 is meshed with the rack 24, and the gear 22 is rotatably set in the rotating groove 23;

[0045] In the present technical solution, when the cleaning barrel 13 moves downward, the cleaning barrel 13 drives the rotating shaft 21 to move downward, and the cleaning barrel 13 drives the gear 22 to move downward along the rotating groove 23. The gear 22 moves downward, and through the meshing with the rack 24, the gear 22 rotates. The rotation of the gear 22 drives the rotating shaft 21 to rotate, and the rotating shaft 21 drives the cleaning barrel 13 to rotate, so that the cleaning barrel 13 rotates while moving downward, changing the contact surface of the cleaning barrel 13 and the first filter screen 7, avoiding that one side of the cleaning barrel 13 is always in contact with the first filter screen 7, and reducing wear; when the cleaning barrel 13 moves downward and rotates, the rotation direction of the cleaning barrel 13 is as follows Fig. 9 As shown by the arrow in the figure, when the cleaning cylinder 13 rotates, firstly, the pressing effect of the medicine on impurities and particulate matter when passing through the first filter screen 7 can be disrupted. Secondly, through the rotation of the cleaning cylinder 13, the medicine below the cleaning cylinder 13 can move in the direction away from the first filter screen 7, thereby providing an outward force on the impurities and particulate matter around the cleaning cylinder 13, making it easier for the impurities and particulate matter to move out from the surface of the first filter screen 7, thereby facilitating the cleaning of the impurities and particulate matter on the first filter screen 7.

[0046] In the third embodiment, when cleaning the impurities and particles on the surface of the first filter 7, a small amount of impurities and particles may be closely attached to the first filter 7, or enter the mesh of the first filter 7, which is not convenient to scrape by the up and down movement of the cleaning cylinder 13. Long-term use may easily cause the first filter 7 to be blocked when spraying medicine, affecting the spraying effect. In view of this problem, this embodiment is an improvement made on the basis of the second embodiment. For details, please refer to Figure 1-Figure 14 A plurality of suction holes 25 are provided on the surface of the cleaning cylinder 13, and a suction groove 26 connected to the suction hole 25 is provided inside the cleaning cylinder 13, and a suction pipe 27 is provided at the end of the suction groove 26, and the end of the suction pipe 27 is rotatably connected to the rotating shaft 21, and a collection groove 28 is provided inside the filter box 2, and the end of the suction pipe 27 is connected to the collection groove 28, and a piston plate 29 is slidably provided in the collection groove 28, and a first transmission rod 30 is fixed on the surface of the piston plate 29, and the first transmission rod 30 passes through the collection groove 28 and is fixedly connected to the push plate 14;

[0047] A plugging plate 31 for sealing the suction hole 25 is elastically connected in the cleaning cylinder 13, a through groove 32 is provided on the plugging plate 31, a resisting protrusion 33 is fixed on the end of the plugging plate 31, a circular ring 34 is fixed on the circumference of the rotating shaft 21, a top rod 35 for resisting the positioning frame 6 is elastically connected to the circular ring 34, a second transmission rod 36 is fixed on the top rod 35, a slideway 37 for sliding of the plugging plate 31 is provided on the second transmission rod 36, and a resisting groove 371 for sliding of the resisting protrusion 33 is provided on the inner wall of the slideway 37;

[0048] A first slide groove 38 is provided inside the cleaning cylinder 13, a second spring 39 is provided inside the first slide groove 38, a convex plate 40 is fixed on the blocking plate 31, the convex plate 40 is slidably provided in the first slide groove 38, and an end of the second spring 39 is fixedly connected to the convex plate 40;

[0049] A second slide groove 41 is provided inside the ring 34, a third spring 42 is provided in the second slide groove 41, a slide plate 43 is fixed to the end of the push rod 35, the slide plate 43 is slidably provided in the second slide groove 41, and the end of the third spring 42 is fixedly connected to the slide plate 43;

[0050] The collecting tank 28 is connected with a liquid outlet pipe 44, which is connected with the filter chamber 5, and a third filter screen 45 is arranged at the end of the liquid outlet pipe 44. A first one-way valve 46 is arranged inside the air intake pipe 27, and a second one-way valve 47 is arranged inside the liquid outlet pipe 44. An air outlet hole 48 is opened at the bottom of the collecting tank 28, and a cover plate 49 for sealing the collecting tank 28 is arranged on the filter box 2.

[0051] In the present technical solution, when the lifting plate 11 moves downward to drive the cleaning cylinder 13 to rotate, the rotating shaft 21 drives the ring 34 to rotate, and the ring 34 drives the top rod 35 to rotate, so that the top rod 35 conflicts with the surface of the positioning frame 6 (such as Fig. 9 As shown in FIG. 1 ), after the push rod 35 contacts the surface of the positioning frame 6, the push rod 35 is retracted to the inside of the ring 34 due to the contact of the positioning frame 6, which drives the slide plate 43 to slide in the second slide groove 41 and compresses the third spring 42, so that the third spring 42 accumulates force. When the push rod 35 contracts, it drives the second transmission rod 36 to move downward (as shown in FIG. 1 ). Figure 7 and Fig.12 As shown in the figure, the second transmission rod 36 moves downward, causing the end of the blocking plate 31 to slide in the slideway 37, so that the abutting protrusion 33 abuts against the second transmission rod 36, and at the same time, the blocking plate 31 drives the abutting protrusion 33 to slide in the abutting groove 371, so that the blocking plate 31 moves leftward, and the blocking plate 31 moves leftward to drive the convex plate 40 to move, and stretch the second spring 39, and at the same time drive the through groove 32 to move, so that the through groove 32 connects the suction hole 25 with the suction groove 26. At this time, since the lifting plate 11 moves downward, it will pass through the first A transmission rod 30 moves downward, and the first transmission rod 30 moves downward to push the piston plate 29 to move downward inside the collecting tank 28, so that a negative pressure state is formed inside the collecting tank 28. At this time, impurities and particulates that are closely attached to the first filter screen 7 or enter the mesh of the first filter screen 7 can be sucked into the suction groove 26 through the suction hole 25, and then sucked into the collecting tank 28 through the suction pipe 27. Through negative pressure adsorption, the impurities and particulates are further processed, and the possibility of clogging of the first filter screen 7 is reduced;

[0052] When the push rod 35 continues to rotate so that the push rod 35 no longer conflicts with the positioning frame 6, the third spring 42 releases force, so that the push rod 35 extends out of the ring 34, and the push rod 35 drives the second transmission rod 36 to reset. The second transmission rod 36 resets, so that the conflicting protrusion 33 slides downward along the conflicting groove 371, so that the blocking plate 31 slides to the right and resets. At this time, the through groove 32 is misaligned with the suction hole 25 and the suction groove 26, and the suction hole 25 is blocked. At this time, the suction hole 25 no longer absorbs material. When the blocking plate 31 is reset, the second spring 39 releases force to assist in pushing the blocking plate 31 to reset, so that the blocking plate 31 is reset more accurately.

[0053] Through the above process, when the first transmission rod 30 pushes the piston plate 29 to move downward, the collecting tank 28 is always in a negative pressure state (such as Fig. 9As shown in the figure, there are several groups of push rods 35, and the number of rows of suction holes 25 arranged on the surface of the cleaning cylinder 13 corresponds to the push rods 35. Whenever the ring 34 drives the push rod 35 to rotate to the positioning frame 6 and conflicts with the positioning frame 6, the suction holes 25 at the corresponding parts of the push rod 35 will face the first filter screen 7. At this time, the through groove 32 will connect the suction holes 25 and the suction groove 26, so that the suction holes 25 can be used for suction processing. When the push rod 35 rotates to not conflict with the positioning frame 6, the through groove 32 is misaligned with the suction holes 25 and the suction groove 26, and the suction holes 25 are blocked, so that the suction holes 25 no longer suck materials until the piston plate 29 moves downward to the lowest point;

[0054] The first one-way valve 46 provided inside the air intake pipe 27 allows the airflow to move only from the air intake pipe 27 to the inside of the aggregate tank 28, and the second one-way valve 47 provided inside the liquid outlet pipe 44 allows the airflow to be discharged only from the inside of the aggregate tank 28 to the outside of the liquid outlet pipe 44. When the piston plate 29 moves downward, the first one-way valve 46 opens, and the second one-way valve 47 closes, so as to suck the material, and the medicine and the impurities and particulates on the first filter screen 7 are sucked into the aggregate tank 28 at the same time; when the piston plate 29 moves upward, the piston plate 29 squeezes the inside of the aggregate tank 28, the first one-way valve 46 closes, and the second one-way valve 47 opens, and the impurities and particulates inside the aggregate tank 28 are filtered through the third filter screen 45, so that the medicine is discharged through the liquid outlet pipe 44, and the impurities and particulates remain in the aggregate tank 28;

[0055] When cleaning is needed, the inside of the aggregate trough 28 can be cleaned by opening the cover plate 49 on one side of the aggregate trough 28. The cover plate 49 can be fixedly connected to the filter box 2 by fastening bolts, which is convenient for disassembly and assembly of the cover plate 49. The air outlet hole 48 is set to balance the air pressure below the aggregate trough 28 when the piston plate 29 moves up and down, thereby facilitating the movement of the piston plate 29.

[0056] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0057] The above is only 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 technical 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 spray device capable of filtering liquid medicine, comprising a spray gun body, characterized in that: A filter box is fixed on the spray gun body, a medicine bottle is arranged on the filter box, a heating rod for heating the medicine inside the medicine bottle is arranged on the filter box, a filter cavity is arranged in the filter box, a positioning frame is arranged at the port of the filter cavity, a first filter net is fixed in the positioning frame, a micro pump connected with the filter cavity is arranged inside the spray gun body, and a water pipe is arranged in communication with the output end of the micro pump; A movable groove is provided in the filter box, a lifting plate is slidably provided in the movable groove, a positioning frame is fixed on the lifting plate, a cleaning cylinder for cleaning the surface of the first filter screen is provided on the positioning frame, a push plate is slidably provided in the movable groove, the lifting plate is elastically connected to the push plate, an electric push rod is fixed on the filter box, and an output end of the electric push rod is connected to the push plate; A first spring is fixed between the lifting plate and the push plate, a connecting rod is fixed on the lifting plate, a second filter screen is fixed at the end of the connecting rod, and the second filter screen is slidably arranged inside the filter box; A plurality of suction holes are provided on the surface of the cleaning cylinder, an air suction groove connected to the suction holes is provided inside the cleaning cylinder, an air suction pipe is provided at the end of the air suction groove, a collecting groove is provided inside the filter box, a piston plate is slidably provided in the collecting groove, and a first transmission rod is fixed on the surface of the piston plate; A plugging plate for sealing the suction hole is elastically connected in the cleaning cylinder, a through groove is provided on the plugging plate, a resisting protrusion is fixed on the end of the plugging plate, a circular ring is fixed on the circumference of the rotating shaft, a top rod for resisting the positioning frame is elastically connected to the circular ring, a second transmission rod is fixed on the top rod, a slideway for sliding the plugging plate is provided on the second transmission rod, and a resisting groove for sliding the resisting protrusion is provided on the inner wall of the slideway; A liquid outlet pipe is connected to the aggregate trough, the liquid outlet pipe is connected to the filter chamber, a third filter screen is arranged at the end of the liquid outlet pipe, a first one-way valve is arranged inside the air intake pipe, a second one-way valve is arranged inside the liquid outlet pipe, and an air outlet hole is opened at the bottom of the aggregate trough.

2. The spray device capable of filtering liquid medicine according to claim 1, characterized in that: A limiting column is fixed on the outer surface of the lifting plate, and a limiting groove for the limiting column to slide is provided inside the filter box.

3. The spray device capable of filtering liquid medicine according to claim 2, characterized in that: A rotating shaft is fixed at the end of the cleaning cylinder, the rotating shaft is rotatably connected to the positioning frame, a gear is keyed at the end of the rotating shaft, a rotating groove is opened on the inner wall of the filter box, a rack is fixed in the rotating groove, the gear is meshed with the rack, and the gear is rotatably arranged in the rotating groove.

4. The spray device capable of filtering liquid medicine according to claim 3, characterized in that: The end of the suction pipe is rotatably connected to the rotating shaft, the end of the suction pipe is connected to the material collecting trough, and the first transmission rod passes through the material collecting trough and is fixedly connected to the push plate.

5. The spray device capable of filtering liquid medicine according to claim 4, characterized in that: A first slide groove is provided inside the cleaning cylinder, a second spring is arranged in the first slide groove, a convex plate is fixed on the blocking plate, the convex plate is slidably arranged in the first slide groove, and the end of the second spring is fixedly connected to the convex plate.

6. The spray device capable of filtering liquid medicine according to claim 5, characterized in that: A second slide groove is provided inside the circular ring, a third spring is arranged in the second slide groove, a slide plate is fixed to the end of the push rod, the slide plate is slidably arranged in the second slide groove, and the end of the third spring is fixedly connected to the slide plate.

7. The spray device capable of filtering liquid medicine according to claim 6, characterized in that: The filter box is provided with a cover plate for sealing the aggregate trough.

8. The spray device capable of filtering liquid medicine according to claim 7, characterized in that: A hot air blower is arranged inside the spray gun body, an air duct is arranged inside the spray gun body, an output end of the hot air blower is connected with the air duct, an air outlet is arranged at the end of the air duct, and an infrared emitter is fixed on the inner wall of the air outlet.

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