Multiple filtering and grinding mechanism in paint grinding machine

Abstract

The utility model relates to the technical field of paint, in particular to a multiple filtering and grinding mechanism in a paint grinding machine, which comprises a supporting mechanism, a grinding mechanism and an auxiliary mechanism for fully grinding paint, and a transmission mechanism is mounted on the supporting mechanism. Paint is firstly ground through the rough grinding barrel and the grinding cutter, is fully ground under the operation of the auxiliary mechanism and then enters the fine grinding barrel through the filter screen, the fineness of the paint is further improved under the grinding of the frosted surfaces of the rough grinding barrel and the fine grinding barrel, and the mechanism is small in occupied area, high in grinding degree and easy to operate.

Description

Technical Field

[0001] The utility model relates to the technical field of paints, in particular to a multiple filtering and grinding mechanism inside a paint sander. Background Art

[0002] According to the patent document with the publication number CN215140671U, the paint is ground by two grinding sleeves, and the paint that does not meet the requirements is ground multiple times by a circulating filter device;

[0003] When in use, this patent document has the problem of large floor space due to the parallel arrangement of the two grinding sleeves. Moreover, both grinding sleeves are ground by grinding blades, and the grinding fineness is limited. The circulating filter device extracts the insufficiently ground paint through the hydraulic cylinder, and the structure is complex and the filter screen and pipeline are difficult to clean. Utility Model Content

[0004] The purpose of the utility model is to provide a multiple filtering and grinding mechanism inside a paint sander in order to solve the above problems.

[0005] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0006] A multi-filter grinding mechanism inside a paint sander, comprising a support mechanism, a transmission mechanism mounted on the support mechanism, a grinding mechanism, and an auxiliary mechanism for fully grinding the paint;

[0007] The grinding mechanism includes a fine grinding barrel, a discharge pipe is provided at the bottom of the fine grinding barrel, a coarse grinding barrel is provided at the center of the fine grinding barrel, a filter screen is welded on the upper side of the coarse grinding barrel, and a transmission shaft is rotatably connected to the center of the coarse grinding barrel, on which three grinding knives are fixedly installed;

[0008] The auxiliary mechanism comprises a hydraulic cylinder which is fixed on the supporting mechanism; a telescopic portion of the hydraulic cylinder is fixedly connected with a U-shaped frame; a circular plate is welded at the lower end of the U-shaped frame.

[0009] Preferably, the support mechanism includes a bracket, a fixing rod is installed on one side of the bracket, an upper beam is welded above the fixing rod, the middle position of the upper beam is connected to the hydraulic cylinder fixing plate, and a fixing frame for preventing the coarse grinding barrel from rotating is fixed in the middle position of the fixing rod.

[0010] Preferably: the transmission mechanism includes a circular protrusion, which is welded to the bottom of the coarse grinding barrel, a circular groove is provided below the circular protrusion, and the circular groove is fixed at the bottom side of the fine grinding barrel. The circular protrusion is slidably connected to the circular groove, a gear ring is provided below the circular groove, and a second transmission gear is provided at the center of the gear ring. The gear ring and the second transmission gear are rotationally connected through the first transmission gear, and the first transmission gear is concentrically arranged with the output shaft of the motor.

[0011] Preferably, the fine grinding barrel has an inner conical structure, the coarse grinding barrel has an outer conical structure, and the conical surfaces of the fine grinding barrel and the coarse grinding barrel have a frosted texture for grinding paint.

[0012] Preferably, three grinding knives are equidistantly mounted on the transmission shaft, and the grinding knives are provided with four grinding edges.

[0013] Preferably, the fixing frame is fixedly connected to the filter screen, and the radius of the fixing frame is the same as the radius of the opening of the fine grinding barrel. A circular hole for pouring the paint to be processed is opened at the center of the fixing frame.

[0014] The beneficial effects compared with the prior art are as follows:

[0015] 1. The two grinding barrels are set concentrically. The paint is ground by the grinding knife for the first time, and the second time is polished by the frosting inside the grinding barrel.

[0016] 2. The auxiliary mechanism pushes the paint so that the first-pass ground paint can quickly pass through the filter screen, while ensuring that the paint that does not meet the grinding requirements does not accumulate at the bottom of the grinding barrel, so that the paint can be fully ground. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0018] Figure 1 This is a schematic diagram of the structure of the multiple filtering and grinding mechanism inside the paint sander described in the utility model;

[0019] Figure 2 This is a cross-sectional view of the multiple filtering and grinding mechanism inside a paint sander described in the present utility model;

[0020] Figure 3 This is a schematic diagram of the auxiliary mechanism structure of the multiple filtering and grinding mechanism inside the paint sander described in the utility model;

[0021] Figure 4 This is a partial parts diagram of the transmission mechanism of the multiple filtering and grinding mechanism inside the paint sander described in the utility model;

[0022] Figure 5 This is a partial parts diagram of the grinding mechanism of the multiple filtering and grinding mechanism inside the paint sander described in the utility model;

[0023] Figure 6The utility model is a schematic diagram of the structure of the grinding blade and the transmission shaft of the multiple filtering and grinding mechanism inside the paint sander.

[0024] The following are the descriptions of the reference numerals:

[0025] 1. Support mechanism; 2. Grinding mechanism; 3. Transmission mechanism; 4. Auxiliary mechanism; 11. Bracket; 12. Fixed rod; 13. Upper beam; 14. Fixed frame; 21. Fine grinding barrel; 22. Coarse grinding barrel; 23. Filter; 24. Transmission shaft; 25. Grinding knife; 26. Discharge pipe; 31. Circular bump; 32. Circular groove; 33. First transmission gear; 34. Second transmission gear; 35. Ring gear; 36. Motor; 41. Hydraulic cylinder; 42. U-shaped frame; 43. Circular plate. DETAILED DESCRIPTION

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0027] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0028] The present invention will be further described below with reference to the accompanying drawings:

[0029] like Figures 1-6 As shown, a multi-filtration and grinding mechanism inside a paint sander includes a support mechanism 1, a transmission mechanism 3 is mounted on the support mechanism 1, a grinding mechanism 2 and an auxiliary mechanism 4 for fully grinding the paint;

[0030] In this embodiment: the grinding mechanism 2 includes a fine grinding barrel 21, a discharge pipe 26 is provided at the bottom of the fine grinding barrel 21, a coarse grinding barrel 22 is provided at the center of the fine grinding barrel 21, the fine grinding barrel 21 is an inner conical structure, and the coarse grinding barrel 22 is an outer conical structure, and the conical surfaces of the fine grinding barrel 21 and the coarse grinding barrel 22 are frosted textures for grinding paint, a filter screen 23 is welded on the upper side of the coarse grinding barrel 22, and the center of the coarse grinding barrel 22 is rotatably connected to a transmission shaft 24, and three grinding knives 25 are fixedly mounted on the transmission shaft 24, and the three grinding knives 25 are equidistantly mounted on the transmission shaft 24, and four grinding edges are provided on the grinding knives 25. After the paint is ground by the three grinding knives 25 in the coarse grinding barrel 22, it enters the fine grinding barrel 21 through the filter screen 23, and is ground a second time and more finely by the frosted surfaces of the fine grinding barrel 21 and the coarse grinding barrel 22;

[0031] In this embodiment, the transmission mechanism 3 includes a circular protrusion 31, which is welded to the bottom of the coarse grinding barrel 22. A circular groove 32 is provided below the circular protrusion 31, and the circular groove 32 is fixed to the bottom side of the fine grinding barrel 21. The circular protrusion 31 is slidably connected to the circular groove 32. A gear ring 35 is provided below the circular groove 32. A second transmission gear 34 is provided at the center of the gear ring 35. The gear ring 35 and the second transmission gear 34 are rotationally connected through the first transmission gear 33. The first transmission gear 33 is concentrically arranged with the output shaft of the motor 36. The motor 36 drives the transmission shaft 24 to rotate, the grinding knife 25 on the transmission shaft 24 starts to rotate, the transmission shaft 24 drives the first transmission gear 33 to rotate, and at the same time, the first transmission gear 33 drives the second transmission gear 34 and the ring gear 35 to start rotating, and the second transmission gear 34 and the ring gear 35 rotate in opposite directions. The transmission shaft 24 drives the grinding knife 25 to grind the paint, and the ring gear 35 drives the fine grinding barrel 21 to rotate. At this time, the circular protrusion 31 slides in the circular groove 32, and the frosted surfaces of the fine grinding barrel 21 and the coarse grinding barrel 22 grind the paint.

[0032] In this embodiment, the support mechanism 1 includes a bracket 11, a fixed rod 12 is installed on one side of the bracket 11, an upper beam 13 is welded above the fixed rod 12, the middle position of the upper beam 13 is connected to the fixed plate of the hydraulic cylinder 41, and a fixed frame 14 is fixed at the middle position of the fixed rod 12 for preventing the coarse grinding barrel 22 from rotating. The fixed frame 14 is fixedly connected to the filter screen 23, and the radius of the fixed frame 14 is the same as the opening radius of the fine grinding barrel 21. A circular hole for pouring paint to be processed is opened at the center of the fixed frame 14, and the paint to be processed is poured into the grinding mechanism 2 from the fixed frame 14. The fixed frame 14 can also prevent the paint from spilling out from between the fine grinding barrel 21 and the coarse grinding barrel 22 during the processing.

[0033] In this embodiment: the auxiliary mechanism 4 includes a hydraulic cylinder 41, which is fixed on the supporting mechanism 1. The telescopic part of the hydraulic cylinder 41 is fixedly connected to the U-shaped frame 42, and a circular plate 43 is welded to the lower end of the U-shaped frame 42. When the paint is processed, some paint that is not fully ground may sink to the bottom of the coarse grinding barrel 22. At this time, the hydraulic cylinder 41 starts to operate, and the telescopic part of the hydraulic cylinder 41 drives the U-shaped frame 42 to move back and forth toward the coarse grinding barrel 22. The circular plate 43 on the U-shaped frame 42 pushes, pulls and stirs the paint, so that the paint that is not fully ground returns to the vicinity of the grinding knife 25 for grinding, and the paint that meets the grinding requirements moves upward, accelerating the entry of the paint from the filter screen 23 into the fine grinding barrel 21 for re-filtration.

[0034] Working principle: The paint to be processed is poured from the fixed frame 14 into the coarse grinding barrel 22. At this time, the motor 36 starts working, and the motor 36 drives the transmission shaft 24 to rotate. The three grinding knives 25 installed on the transmission shaft 24 start to grind the paint. At the same time, the transmission shaft 24 drives the first transmission gear 33 to start rotating. Then the first transmission gear 33 drives the second transmission gear 34 and the ring gear 35 to rotate in the opposite direction. The ring gear 35 drives the fine grinding barrel 21 to rotate. At this time, the paint processed by the grinding knife 25 enters the fine grinding barrel 21 through the filter screen 23. The friction generated by the rotation of the fine grinding barrel 21 and the gravity of the paint itself cause the paint to pass through the frosted surfaces of the fine grinding barrel 21 and the coarse grinding barrel 22 for secondary processing. As the gap between the fine grinding barrel 21 and the coarse grinding barrel 22 gradually becomes smaller, the grinding becomes finer.

[0035] After the motor 36 starts working for a period of time, some paint that has not been fully ground may sink to the bottom of the coarse grinding barrel 22. At this time, the hydraulic cylinder 41 starts to operate, and the telescopic part of the hydraulic cylinder 41 drives the U-shaped frame 42 to move toward the coarse grinding barrel 22. The circular plate 43 on the U-shaped frame 42 pushes, pulls and stirs the paint, so that the paint that has not been fully ground returns to the vicinity of the grinding knife 25 for grinding, and the paint that meets the grinding requirements moves upward, accelerating the entry of the paint from the filter screen 23 into the fine grinding barrel 21 for re-filtration, and finally the ground paint flows out from the discharge pipe 26.

[0036] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements shall fall within the scope of the present invention as claimed.

Claims

1. A multi-filter grinding mechanism inside a paint sander, comprising a support mechanism (1), a transmission mechanism (3) mounted on the support mechanism (1), characterized in that: It also includes a grinding mechanism (2) and an auxiliary mechanism (4) for fully grinding the paint; The grinding mechanism (2) comprises a fine grinding barrel (21), a discharge pipe (26) is provided at the bottom of the fine grinding barrel (21), a coarse grinding barrel (22) is provided at the center of the fine grinding barrel (21), a filter screen (23) is welded above the coarse grinding barrel (22), and the center of the coarse grinding barrel (22) is rotatably connected to a transmission shaft (24), and three grinding knives (25) are fixedly mounted on the transmission shaft (24); The auxiliary mechanism (4) comprises a hydraulic cylinder (41), a telescopic portion of the hydraulic cylinder (41) is fixedly connected to a U-shaped frame (42), and a circular plate (43) is welded to the lower end of the U-shaped frame (42).

2. The paint sander internal multi-filtration and grinding mechanism according to claim 1, characterized in that: The support mechanism (1) comprises a bracket (11), a fixing rod (12) is mounted on one side of the bracket (11), an upper beam (13) is welded above the fixing rod (12), a middle position of the upper beam (13) is connected to a fixing plate of the hydraulic cylinder (41), and a fixing frame (14) for preventing the coarse grinding barrel (22) from rotating is fixed at the middle position of the fixing rod (12).

3. The paint sander internal multi-filtration and grinding mechanism according to claim 1, characterized in that: The transmission mechanism (3) comprises a circular protrusion (31), the circular protrusion (31) being welded to the bottom of the coarse grinding barrel (22), a circular groove (32) being provided below the circular protrusion (31), the circular groove (32) being fixed at the bottom side of the fine grinding barrel (21), the circular protrusion (31) being slidably connected to the circular groove (32), a gear ring (35) being provided below the circular groove (32), a second transmission gear (34) being provided at the center of the gear ring (35), the gear ring (35) being rotationally connected to the second transmission gear (34) via a first transmission gear (33), and the first transmission gear (33) being concentrically provided with the output shaft of the motor (36).

4. The paint sander internal multi-filtration and grinding mechanism according to claim 1, characterized in that: The fine grinding barrel (21) has an inner conical structure, the coarse grinding barrel (22) has an outer conical structure, and the conical surfaces of the fine grinding barrel (21) and the coarse grinding barrel (22) have a frosted texture for grinding paint.

5. The internal multi-filtration and grinding mechanism of a paint sander according to claim 1, characterized in that: The three grinding knives (25) are equidistantly mounted on the transmission shaft (24), and the grinding knives (25) are provided with four grinding edges.

6. The paint sander internal multi-filtration and grinding mechanism according to claim 2, characterized in that: The fixing frame (14) is fixedly connected to the filter screen (23), and the radius of the fixing frame (14) is the same as the opening radius of the fine grinding barrel (21). The fixing frame (14) is provided with a circular hole at the center for pouring the paint to be processed.

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