Powder cyclic crushing device for coating production

Abstract

The utility model belongs to the technical field of coating production, and particularly relates to a powder circulating crushing device for coating production, which comprises four support columns, the four supporting columns are fixedly connected with an upper shell and a lower shell in a matched mode respectively, the upper shell covers an opening of the lower shell, a filtering hopper is fixedly connected into the lower shell, a material guiding hopper is fixedly connected to a bottom end opening of the filtering hopper, a material guiding pipe is connected to a bottom end opening of the material guiding hopper, the other end of the material guiding pipe is connected to the barrel, and the upper shell and the lower shell are fixedly connected to the barrel in a matched mode. A first motor is mounted at the top of the barrel; when the crushing device is used for crushing, the risk that a feeding hole of a vehicle or the interior of the tank body is blocked due to direct feeding of materials can be avoided, the smooth proceeding of subsequent crushing operation is ensured, and unqualified crushed particles can be conveyed into the tank body again to be crushed again by virtue of the primary crushing channel, so that the crushing efficiency is improved. A backflow channel does not need to be arranged independently, extra energy consumption possibly caused by arrangement of the backflow channel is avoided, and therefore the overall production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of coating production, in particular to a powder circulating and pulverizing device for coating production. Background Technique

[0002] Coatings are materials that are coated on the surface of objects to be protected or decorated and can form a continuous film firmly attached to the coated objects. The production of coatings involves multiple processes, and the pulverization of powder is one of the key steps.

[0003] The existing powder pulverizing device for coating production mainly consists of a tank body, a feed hopper, a drive system, pulverizing blades and a discharge pipe. When pulverizing the powder, first, the powder to be pulverized is added into the tank body through the feed hopper, and then the drive system is used to drive the pulverizing blades to rotate. Through the high-speed rotation of the pulverizing blades, the powder entering the tank body can be pulverized, and the pulverized powder is discharged through the discharge pipe. The pulverized powder will be transported to subsequent processing equipment for further processing and treatment.

[0004] For the existing powder pulverizing device for coating production, when pulverizing, most of the materials to be pulverized are directly put into the tank body through the feed hopper. If the materials contain large particles or foreign objects, direct feeding will increase the risk of blocking the feed port or the inside of the tank body, and since the number of materials that need to be circulated and pulverized due to being screened out as unqualified is extremely small, setting up a reflux channel specifically for them will reduce the efficiency of the entire pulverizing system. Therefore, a powder circulating and pulverizing device for coating production is proposed to solve the above problems. Content of the Utility Model

[0005] In order to make up for the deficiencies of the prior art and solve the problems raised in the above background technique, the utility model proposes a powder circulating and pulverizing device for coating production.

[0006] The technical solution adopted by the present utility model to solve its technical problems is as follows: The powder circulating and pulverizing device for paint production of the present utility model includes four support columns; the four support columns are respectively fixedly connected with an upper shell and a lower shell in cooperation, and the upper shell covers the opening of the lower shell. A filter hopper is fixedly connected inside the lower shell, a guide hopper is fixedly connected to the bottom port of the filter hopper, the bottom port of the guide hopper is connected with a guide pipe, and the other end of the guide pipe is connected to a cylinder body. A first motor is installed at the top of the cylinder body, the output end of the first motor is connected with a rotating shaft, and spiral conveying and pulverizing blades are fixed on the outer surface of the rotating shaft. An inclined pipe is connected to the top end of the cylinder body, a feed pipe is connected to the bottom end of the cylinder body, and a feed hopper is connected to the upper port of the feed pipe. When pulverizing, first, the powder to be pulverized is put into the cylinder body through the feed hopper, the first motor is started, and the spiral conveying and pulverizing blades rotate. Through the rotation of the spiral conveying and pulverizing blades, the powder can be primarily pulverized, and the primarily pulverized material can be conveyed upward and put into the tank body through the inclined pipe for pulverizing operation. Through the primary pulverization, large-particle materials can be broken, thereby avoiding the risk of blocking the feed port or the inside of the tank body caused by directly putting the materials, and ensuring the smooth progress of the subsequent pulverizing operation;

[0007] After multi-stage pulverization and grinding, the powder particles will fall into the filter hopper through the funnel, so that the qualified pulverized particles fall to the bottom of the lower shell through the filter holes on the filter hopper, and the unqualified materials intercepted by the screening fall into the guide hopper and flow into the cylinder body through the guide pipe. Through the high-speed rotation of the spiral conveying and pulverizing blades, the unqualified pulverized particles can be re-conveyed into the tank body for pulverizing operation. By re-conveying the unqualified pulverized particles into the tank body for secondary pulverization, it can ensure that the product meets the expected fineness and quality requirements. This way of circulating pulverization can reduce the particle size difference of the particles, improve the uniformity and consistency of the product, and avoid waste of raw materials. It can make full use of these particles, reduce waste, and lower the production cost; Since the unqualified materials that need to be circulated and pulverized are extremely few, the device can re-convey the unqualified pulverized particles into the tank body for secondary pulverization by means of the primary pulverization channel, without the need to set up a separate return channel for it, avoiding the additional energy consumption that may be brought about by setting up the return channel, thereby reducing the overall production cost.

[0008] Preferably, a supporting rod is fixedly connected inside the material guiding hopper. A fixing block is installed on the supporting rod, and a column is fixedly connected to the fixing block. The top end of the column is fixedly connected with a lower grinding plate. A plurality of lower grinding blocks are fixed on the top side of the lower grinding plate. An upper grinding plate is rotatably installed at the junction of the upper shell and the lower shell. A plurality of upper grinding blocks are fixed on the bottom side wall of the upper grinding plate. A funnel is fixedly connected to the top side wall of the upper grinding plate. The powder particles after secondary crushing will flow into the grinding area through the funnel. Through the rotation of the upper grinding plate and the cooperation of the lower grinding plate, the powder particles after multi-stage crushing can be ground to further refine the crushed particles.

[0009] Preferably, a fixing frame is installed on the upper shell. A second motor is installed at the top of the fixing frame. The output end of the second motor is connected with a rotating rod. The bottom end of the rotating rod is fixedly connected with a rotating column, and the bottom end of the rotating column is fixedly connected inside the bottom port of the funnel. A plurality of first crushing rods are fixed on the outer circumferential surface of the rotating column. A plurality of second crushing rods are fixed on the inner wall of the upper shell, and the first crushing rods and the second crushing rods are arranged alternately. After the material for primary crushing is put into the tank body, the second motor is started to make the rotating column drive the first crushing rods to rotate. Under the cooperation of the second crushing rods, the powder can be crushed twice.

[0010] Preferably, the top port of the upper shell is connected with a return material hopper, and the bottom end of the lower shell is connected with a discharge pipe. When using this device, by setting the discharge pipe, it is convenient to discharge the qualified material particles after crushing. By setting the return material hopper, it is convenient to put the material after primary crushing into the tank body, and at the same time, the unqualified materials screened out can enter the tank body through the return material hopper for re-crushing.

[0011] The beneficial effects of the present utility model are as follows:

[0012] 1. When the present utility model performs crushing, first, the powder to be crushed is put into the cylinder through the feed hopper. The first motor is started to make the spiral conveying and crushing blades rotate. Through the rotation of the spiral conveying and crushing blades, the powder can be crushed primarily, and the material after primary crushing can be conveyed upward and put into the tank body through the inclined pipe for crushing operation. Through primary crushing, the large particle materials can be broken, thus avoiding the risk of blocking the feed port or the inside of the tank body caused by directly putting the materials, and ensuring the smooth progress of the subsequent crushing operation;

[0013] 2. When the utility model is in use, it can re - convey the unqualified crushed particles into the tank for crushing operation. By re - conveying the unqualified crushed particles into the tank for secondary crushing, it can ensure that the product meets the expected fineness and quality requirements. This way of cyclic crushing can reduce the particle size difference of the particles, improve the uniformity and consistency of the product, and avoid waste of raw materials. It can make full use of these particles, reduce waste, and lower the production cost;

[0014] 3. When the utility model is in use, by means of the primary crushing channel, the unqualified crushed particles can be re - conveyed into the tank for secondary crushing, without the need to set up a separate return channel, thus avoiding the additional energy consumption that may be brought about by setting up the return channel, and reducing the overall production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following - described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 It is a three - dimensional structure schematic diagram of the whole crushing device;

[0017] Figure 2 It is a three - dimensional structure schematic diagram showing the planar structure of the crushing device;

[0018] Figure 3 It is a three - dimensional structure schematic diagram of the cross - section of the upper shell, lower shell and cylinder;

[0019] Figure 4 It is a three - dimensional structure schematic diagram of the internal components of the lower shell;

[0020] Figure 5 It is a three - dimensional structure schematic diagram of the crushing mechanism;

[0021] Figure 6 It is a three - dimensional structure schematic diagram of the grinding assembly.

[0022] In the figure: 1, support column; 2, lower housing; 3, upper housing; 4, filter hopper; 5, material guiding hopper; 6, material guiding pipe; 7, cylinder body; 8, first motor; 9, rotating shaft; 10, spiral conveying and crushing blade; 11, inclined pipe; 12, feed pipe; 13, feed hopper; 14, supporting rod; 15, fixing block; 16, upright column; 17, lower grinding plate; 18, lower grinding block; 19, upper grinding plate; 20, upper grinding block; 21, funnel; 22, fixing frame; 23, second motor; 24, rotating rod; 25, rotating column; 26, first crushing rod; 27, second crushing rod; 28, return material hopper; 29, discharge pipe. Detailed implementation manners

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] Please refer to Figure 1-3 As shown, the powder circulating and crushing device for paint production includes four support columns 1; the four support columns 1 are respectively fixedly connected with an upper housing 3 and a lower housing 2 in cooperation, and the upper housing 3 covers the opening of the lower housing 2. A filter hopper 4 is fixedly connected inside the lower housing 2. A material guiding hopper 5 is fixedly connected to the bottom port of the filter hopper 4. The bottom port of the material guiding hopper 5 is connected with a material guiding pipe 6, and the other end of the material guiding pipe 6 is connected to the cylinder body 7. A first motor 8 is installed at the top of the cylinder body 7. The output end of the first motor 8 is connected with a rotating shaft 9. A spiral conveying and crushing blade 10 is fixed on the outer surface of the rotating shaft 9. An inclined pipe 11 is connected to the top end of the cylinder body 7. The bottom end of the cylinder body 7 is connected with a feed pipe 12. The upper port of the feed pipe 12 is connected with a feed hopper 13. A return material hopper 28 is connected to the top port of the upper housing 3. A discharge pipe 29 is connected to the bottom end of the lower housing 2; when performing crushing, first, the powder to be crushed is put into the cylinder body 7 through the feed hopper 13, and the first motor 8 is started to drive the rotating shaft 9 to drive the spiral conveying and crushing blade 10 to rotate. Through the rotation of the spiral conveying and crushing blade 10, the powder can be primarily crushed, and the primarily crushed material can be conveyed upward and put into the tank through the inclined pipe 11 for crushing operation. Through the primary crushing, large particle materials can be broken, thereby avoiding the risk of blocking the feed port or the inside of the tank caused by directly putting the materials, and ensuring the smooth progress of the subsequent crushing operation.

[0025] Please refer to Figure 1-6As shown, a supporting rod 14 is fixedly connected inside the material guiding hopper 5. A fixing block 15 is installed on the supporting rod 14. A column 16 is fixedly connected to the fixing block 15. The top end of the column 16 is fixedly connected with a lower grinding plate 17. A plurality of lower grinding blocks 18 are fixed on the top side of the lower grinding plate 17. A upper grinding plate 19 is rotatably installed at the junction of the upper shell 3 and the lower shell 2. A plurality of upper grinding blocks 20 are fixed on the bottom side wall of the upper grinding plate 19. A funnel 21 is fixedly connected to the top side wall of the upper grinding plate 19. A fixing frame 22 is installed on the upper shell 3. A second motor 23 is installed at the top of the fixing frame 22. The output end of the second motor 23 is connected with a rotating rod 24. The bottom end of the rotating rod 24 is fixedly connected with a rotating column 25. And the bottom end of the rotating column 25 is fixedly connected inside the bottom port of the funnel 21. A plurality of first crushing rods 26 are fixed on the outer circumferential surface of the rotating column 25. A plurality of second crushing rods 27 are fixed on the inner wall of the upper shell 3. And the first crushing rods 26 and the second crushing rods 27 are arranged in a staggered manner. After the primary crushed material is put into the tank, the second motor 23 is started, so that the rotating column 25 drives the first crushing rods 26 to rotate. Under the cooperation of the second crushing rods 27, the powder can be crushed twice. At the same time, the upper grinding plate 19 will also rotate with the rotation of the rotating column 25. Under the cooperation of the lower grinding plate 17, the powder particles after multi-stage crushing can be ground, so that the crushed particles are further refined. The powder particles after multi-stage crushing and grinding will fall into the filter hopper 4 through the funnel 21. The qualified crushed particles will fall to the bottom of the lower shell 2 through the filter holes on the filter hopper 4, and finally are discharged through the discharge pipe 29. The unqualified materials intercepted by screening will fall into the material guiding hopper 5 and flow into the cylinder 7 through the material guiding pipe 6. Through the high-speed rotation of the spiral conveying crushing blade 10, the unqualified crushed particles can be re-transported into the tank for crushing operation. By re-transporting the unqualified crushed particles into the tank for re-crushing, it can ensure that the product meets the expected fineness and quality requirements. This cyclic crushing method can reduce the particle size difference of the particles, improve the uniformity and consistency of the product, and avoid waste of raw materials. It can make full use of these particles, reduce waste, and reduce production costs. Since the unqualified materials that need to be cyclically crushed are extremely few, the device can re-transport the unqualified crushed particles into the tank for re-crushing by means of the primary crushing channel, without the need to set up a separate return channel for it, avoiding the additional energy consumption that may be brought about by setting up the return channel, thereby reducing the overall production cost.

[0026] Working principle: For the existing powder crushing device used in paint production, when crushing, most of the materials to be crushed are directly put into the tank through the feed hopper 13. If the materials contain large particles or foreign objects, direct feeding will increase the risk of blocking the feed inlet or the inside of the tank. Moreover, since the number of unqualified materials that need to be recycled and crushed is extremely small, setting up a separate return channel for them will reduce the efficiency of the entire crushing system. Therefore, a powder circulating crushing device for paint production is proposed to solve the above problems. When crushing, first put the powder to be crushed into the cylinder 7 through the feed hopper 13, start the first motor 8, and make the rotating shaft 9 drive the spiral conveying and crushing blades 10 to rotate. Through the rotation of the spiral conveying and crushing blades 10, the powder can be initially crushed, and the materials after initial crushing can be conveyed upward and put into the tank through the inclined pipe 11 for crushing operations. Through initial crushing, large particle materials can be broken, thus avoiding the risk of blocking the feed inlet or the inside of the tank caused by directly feeding materials, and ensuring the smooth progress of subsequent crushing operations.

[0027] After the materials after initial crushing are put into the tank, start the second motor 23, and make the rotating column 25 drive the first crushing rod 26 to rotate. Under the cooperation of the second crushing rod 27, the powder can be crushed twice. At the same time, the upper grinding plate 19 will also rotate with the rotation of the rotating column 25. Under the cooperation of the lower grinding plate 17, the powder particles after multi-stage crushing can be ground, making the crushed particles further refined. The powder particles after multi-stage crushing and grinding will fall into the filter hopper 4 through the funnel 21. The qualified crushed particles will fall to the bottom of the lower housing 2 through the filter holes on the filter hopper 4 and are finally discharged through the discharge pipe 29. The unqualified materials intercepted by screening will fall into the guide hopper 5 and flow into the cylinder 7 through the guide pipe 6. Through the high-speed rotation of the spiral conveying and crushing blades 10, the unqualified crushed particles can be re-conveyed into the tank for crushing operations. By re-conveying the unqualified crushed particles into the tank for re-crushing, it can ensure that the product meets the expected fineness and quality requirements. This way of circulating crushing can reduce the particle size difference, improve the uniformity and consistency of the product, and avoid wasting raw materials. It can make full use of these particles, reduce waste, and lower production costs. Since the number of unqualified materials that need to be recycled and crushed is extremely small, the device can re-convey the unqualified crushed particles into the tank for re-crushing by means of the initial crushing channel without the need to set up a separate return channel, avoiding the additional energy consumption that may be brought about by setting up a return channel, thereby reducing the overall production cost.

[0028] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0029] The above has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed.

Claims

1. A powder circulation crushing device for coating production, characterized in that: The invention comprises four support columns (1); the four support columns (1) are respectively fixedly connected to an upper shell (3) and a lower shell (2); the upper shell (3) is covered at the opening of the lower shell (2); a filter hopper (4) is fixedly connected inside the lower shell (2); a guide hopper (5) is fixedly connected to the bottom end of the filter hopper (4); a guide pipe (6) is connected to the bottom end of the guide hopper (5); the other end of the guide pipe (6) is connected to a cylinder (7); a first electric A motor (8), the output end of the first motor (8) is connected to a rotating shaft (9), a spiral conveying crushing blade (10) is fixed to the outer surface of the rotating shaft (9), the top end of the cylinder (7) is connected to an inclined tube (11), the bottom end of the cylinder (7) is connected to a feed pipe (12), the upper end of the feed pipe (12) is connected to a feed hopper (13), a supporting rod (14) is fixedly connected to the inside of the guide hopper (5), and a fixing block (15) is installed on the supporting rod (14).

2. The powder circulation pulverizing device for coating production according to claim 1, characterized in that: An upper grinding plate (19) is rotatably mounted at the junction of the upper shell (3) and the lower shell (2), and a plurality of upper grinding blocks (20) are fixed on the bottom side wall of the upper grinding plate (19).

3. The powder circulation pulverizing device for coating production according to claim 1, characterized in that: A fixing frame (22) is mounted on the upper housing (3), and a second motor (23) is mounted on the top of the fixing frame (22).

4. The powder circulation pulverizing device for coating production according to claim 3 is characterized in that: The output end of the second motor (23) is connected to a rotating rod (24), the bottom end of the rotating rod (24) is fixedly connected to a rotating column (25), and the bottom end of the rotating column (25) is fixedly connected to the bottom port of the funnel (21).

5. The powder circulation pulverizing device for coating production according to claim 4, characterized in that: A plurality of first crushing rods (26) are fixed on the outer circumferential surface of the rotating column (25), a plurality of second crushing rods (27) are fixed on the inner wall of the upper shell (3), and the first crushing rods (26) and the second crushing rods (27) are arranged in an alternating manner.

6. The powder circulation pulverizing device for coating production according to claim 1, characterized in that: The top port of the upper shell (3) is connected to a reflux hopper (28), and the bottom end of the lower shell (2) is connected to a discharge pipe (29).

7. The powder circulation pulverizing device for coating production according to claim 1, characterized in that: A funnel (21) is fixedly connected to the top side wall of the upper grinding plate (19).

8. The powder circulation pulverizing device for coating production according to claim 1, characterized in that: A column (16) is fixedly connected to the fixed block (15), a lower grinding plate (17) is fixedly connected to the top of the column (16), and a plurality of lower grinding blocks (18) are fixed to the top side of the lower grinding plate (17).

Images