Explosion-proof sand mill for anticorrosive paint production

Abstract

The utility model relates to the technical field of sand mills, in particular to an anti-explosion sand mill for anticorrosive paint production, which comprises a grinding cylinder, a cylinder cover is fixedly mounted at the top of the grinding cylinder, a feed pipe is fixedly mounted at the top of the cylinder cover, a primary crushing component is mounted in the grinding cylinder, and a secondary crushing component is mounted in the grinding cylinder. The bottom end of the grinding cylinder is fixedly connected with a discharging pipe, and a secondary smashing assembly is fixedly installed at the bottom end of the discharging pipe. The primary crushing assembly comprises a first motor fixedly mounted at the top of the cylinder cover, a rotating shaft is fixedly mounted at the position, located in the grinding cylinder, of the driving end of the first motor, a sieve plate is rotationally connected to the outer side of the rotating shaft, and the sieve plate is erected in the grinding cylinder through a bearing ring; according to the utility model, through secondary treatment, the crushing and grinding effects are guaranteed, and continuous feeding and discharging can be carried out for continuous production, so that the production efficiency is greatly improved, meanwhile, the corrosion resistance of the coating is prevented from being influenced by continuous temperature rise, and the explosion risk is reduced.

Description

Technical Field

[0001] This utility model relates to the field of sand mill technology, specifically to an explosion-proof sand mill for the production of anti-corrosion coatings. Background Technology

[0002] In the production process of anti-corrosion coatings, in order to make the anti-corrosion coating slurry have a finer particle size and more uniform particles, and to improve the quality of the anti-corrosion coating, it is necessary to use a sand mill to process the anti-corrosion coating. The working principle of the sand mill is mainly to put the material and grinding media into the grinding cylinder, and then use the stirring shaft to drive the grinding disc to stir and grind the material. The particles of the material slurry are fined and evenly dispersed after interacting with the grinding media.

[0003] A search revealed that CN216605534U discloses an explosion-proof sand mill for the production of anti-corrosion coatings, comprising a crushing cylinder and a recovery cylinder vertically assembled from top to bottom. The bottom wall of the recovery cylinder is provided with a base, and a push rod motor is provided inside the base. The top output end of the push rod motor is provided with a liftable barrier block, which extends to the lower inner half of the crushing cylinder. A sand grinding disc is rotatably installed inside the crushing cylinder, and the edge of the sand grinding disc is provided with dispersing protrusions. A feed pipe is provided on the side wall of the crushing cylinder.

[0004] The aforementioned utility model solves the problem that the condensation of water vapor and the formation of dry powder clumps in anti-corrosion coatings will affect the smoothness and quality of the coating if left untreated. It can effectively break up the clumps of dry powder, making the anti-corrosion coating easier to recycle and improving the production quality and processing efficiency. However, when crushing the powder clumps, the barrier block must completely seal the crushing cylinder opening before crushing can begin, which means that the material must be processed in batches (continuous feeding and discharging is not possible), increasing the time required for each cycle. At the same time, during the lifting and lowering of the barrier block, incompletely crushed coarse particles are easily mixed into the recycling cylinder, requiring secondary re-grinding, which greatly reduces production efficiency. Moreover, the prolonged retention of powder clumps in the crushing cylinder leads to the accumulation of frictional heat, which can easily cause thermal decomposition of the coating when the heat rises, affecting the anti-corrosion performance. Since the multiple sets of feed pipes allow a large amount of air to enter, the risk of the powder clumps exploding after heating is greatly increased.

[0005] Therefore, it is of great importance to design an explosion-proof sand mill for the production of anti-corrosion coatings to solve the above-mentioned defects. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model designs an explosion-proof sand mill for the production of anti-corrosion coatings. This sand mill aims to solve the technical problems of low production efficiency, easy heat accumulation, and reduced anti-corrosion performance and increased explosion risk of existing sand mills.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] An explosion-proof sand mill for producing anti-corrosion coatings includes a grinding cylinder, a cylinder cover fixedly installed on the top of the grinding cylinder, a feed pipe fixedly installed on the top of the cylinder cover, a primary crushing component installed inside the grinding cylinder, a discharge pipe fixedly connected to the bottom end of the grinding cylinder, and a secondary crushing component fixedly installed at the bottom end of the discharge pipe.

[0009] The primary crushing assembly includes a first motor fixedly installed on the top of the cylinder cover. A rotating shaft is fixedly installed on the drive end of the first motor and inside the grinding cylinder. A sieve plate is rotatably connected to the outside of the rotating shaft, and the sieve plate is supported inside the grinding cylinder by a receiving ring. Two sets of crushing rollers are rotatably connected to the outside of the rotating shaft and above the sieve plate. Multiple sets of grinding plates are fixedly installed at the bottom end of the rotating shaft.

[0010] The secondary crushing assembly includes a guide cover fixedly installed at the bottom of the discharge pipe, a discharge cover fixedly installed on the right side of the guide cover, a second motor fixedly installed on the right side of the discharge cover, a screen cylinder fixedly installed inside the discharge cover, and a crushing frame fixedly installed on the drive end of the second motor and located inside the screen cylinder.

[0011] As a preferred embodiment of this utility model, the outer side of the rotating shaft is rotatably connected to the cylinder cover and the sieve plate through a bushing, and two sets of positioning posts are symmetrically connected to the top of the receiving ring, and both sets of positioning posts are inserted into the sieve plate.

[0012] As a preferred embodiment of this utility model, the multiple sets of grinding plates are fixedly connected to the rotating shaft through the mounting sleeve, and the multiple sets of grinding plates are distributed at equal intervals on the outer side of the mounting sleeve.

[0013] As a preferred embodiment of this utility model, a plurality of material discharge blades are fixedly connected to the bottom end of the rotating shaft and the top end of the discharge pipe.

[0014] As a preferred embodiment of this utility model, a crushing blade is fixedly installed on the left side of the crushing frame, and multiple sets of crushing wheels are rotatably connected inside the crushing frame, with all sets of crushing wheels in contact with the inner side of the sieve cylinder.

[0015] As a preferred embodiment of this utility model, a cooling cavity is provided in the inner wall of the grinding cylinder, and water pipes are fixedly connected to both the upper and lower ends of the outer side of the grinding cylinder, and both sets of water pipes are connected to the interior of the cooling cavity.

[0016] As a preferred embodiment of this utility model, the outer side of the cylinder cover is fixedly connected to the grinding cylinder by multiple sets of latches, and a rubber sealing gasket is fixedly connected to the bottom of the cylinder cover.

[0017] As a preferred embodiment of this utility model, the top of the feed pipe is rotatably connected to a cover, the top of the inside of the feed pipe is rotatably connected to a baffle, and the bottom of the feed pipe is fixedly connected to two sets of buffer plates.

[0018] As a preferred embodiment of this utility model, a valve is installed at the bottom end of the discharge pipe.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] 1. In this utility model, through the combined design of a primary crushing component and a secondary crushing component, clumps of dry powder are fed into the grinding cylinder through the feed pipe. The first motor is started to drive the rotating shaft to rotate. The rolling crushing rollers initially crush the dry powder clumps, which then pass through the sieve plate and enter the bottom of the grinding cylinder. Multiple sets of rotating grinding plates further break up the crushed dry powder clumps, thereby improving the crushing effect. The crushed and broken dry powder clumps are discharged into the guide hood through the discharge pipe. The second motor drives the crushing frame to rotate at high speed to further grind the powder clumps. The fully crushed powder clumps pass through the sieve cylinder and are finally discharged as powder through the bottom of the discharge hood. This secondary processing not only ensures the crushing and grinding effect but also enables continuous feeding and discharging for continuous production, thereby greatly improving production efficiency.

[0021] 2. In this utility model, through the cooperative design of the grinding cylinder and the feeding pipe, the sealed cover is opened and the clump of dry powder is fed into the feeding pipe. The slowing plate prevents the feeding from agitating dust due to excessive feeding. After the dry powder is fed in, the baffle is always closed to prevent excessive air from entering and reduce the risk of explosion. When the dry powder is crushed, cooling water is continuously introduced into the cooling chamber through the water pipe to continuously cool the grinding cylinder, thereby preventing continuous temperature rise from affecting the anti-corrosion performance of the coating and reducing the risk of explosion. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the internal structure of the grinding cylinder of this utility model;

[0024] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0025] Figure 4 This is a schematic diagram of the rotating shaft structure of this utility model;

[0026] Figure 5 This is a schematic diagram of the crusher structure of this utility model.

[0027] In the diagram: 1. Grinding cylinder; 101. Cooling chamber; 102. Water pipe; 2. Cylinder cover; 201. Lock; 202. Rubber sealing gasket; 3. Feed pipe; 301. Cover; 302. Baffle; 303. Feeding plate; 4. Primary crushing assembly; 401. First motor; 402. Rotating shaft; 403. Screen plate; 404. Receiving ring; 405. Crushing roller; 406. Grinding plate; 407. Bushing; 408. Positioning post; 409. Mounting sleeve; 410. Discharge paddle; 5. Discharge pipe; 501. Valve; 6. Secondary crushing assembly; 601. Guide cover; 602. Discharge cover; 603. Second motor; 604. Screen cylinder; 605. Crushing frame; 606. Crushing blade; 607. Crushing wheel. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0029] Example: Please refer to Figures 1-5 This utility model provides a technical solution:

[0030] An explosion-proof sand mill for producing anti-corrosion coatings includes a grinding cylinder 1, a cylinder cover 2 fixedly installed on the top of the grinding cylinder 1, a feed pipe 3 fixedly installed on the top of the cylinder cover 2, a primary crushing component 4 installed inside the grinding cylinder 1, a discharge pipe 5 fixedly connected to the bottom end of the grinding cylinder 1, and a secondary crushing component 6 fixedly installed at the bottom end of the discharge pipe 5.

[0031] First, in this embodiment, the specific structure of the primary crushing component 4 is as follows:

[0032] The primary crushing assembly 4 includes a first motor 401 fixedly installed on the top of the cylinder cover 2. A rotating shaft 402 is fixedly installed on the drive end of the first motor 401 and inside the grinding cylinder 1. A sieve plate 403 is rotatably connected to the outside of the rotating shaft 402, and the sieve plate 403 is supported inside the grinding cylinder 1 through a receiving ring 404. Two sets of crushing rollers 405 are rotatably connected to the outside of the rotating shaft 402 and above the sieve plate 403. Multiple sets of grinding plates 406 are fixedly installed at the bottom of the rotating shaft 402. When crushing clumps of dry powder, the powder is first fed into the grinding cylinder 1 through the feed pipe 3. The first motor 401 is started to drive the rotating shaft 402 to rotate. The rotating crushing rollers 405 initially crush the dry powder and then pass it through the sieve plate 403. The powder then enters the bottom of the grinding cylinder 1, where the multiple sets of rotating grinding plates 406 further break up the crushed dry powder, thereby improving the crushing effect. The powder is then introduced into the secondary crushing assembly 6 for further processing.

[0033] Furthermore, in this embodiment, the specific structure of the secondary crushing component 6 is as follows:

[0034] The secondary crushing component 6 includes a guide cover 601 fixedly installed at the bottom of the discharge pipe 5, a discharge cover 602 fixedly installed on the right side of the guide cover 601, a second motor 603 fixedly installed on the right side of the discharge cover 602, a sieve cylinder 604 fixedly installed inside the discharge cover 602, and a crushing frame 605 fixedly installed on the drive end of the second motor 603 and inside the sieve cylinder 604. The crushed and dispersed dry powder clumps are discharged into the interior of the guide cover 601 through the discharge pipe 5. The second motor 603 drives the crushing frame 605 to rotate at high speed to further grind and crush the powder clumps. The fully crushed powder clumps pass through the sieve cylinder 604 and are finally discharged as powder through the bottom of the discharge cover 602. The secondary processing not only ensures the crushing and grinding effect, but also enables continuous feeding and discharging for continuous production, thereby greatly improving production efficiency.

[0035] Then, the outer side of the rotating shaft 402 is rotatably connected to the cylinder cover 2 and the sieve plate 403 through the bushing 407. Two sets of positioning pins 408 are symmetrically connected to the top of the receiving ring 404, and both sets of positioning pins 408 are inserted into the sieve plate 403. The rotating shaft 402 can rotate normally inside the grinding cylinder 1 to perform the crushing operation through the bushing 407. After the sieve plate 403 is mounted on the receiving ring 404, it is positioned by the positioning pins 408 to prevent it from rotating. At the same time, opening the cylinder cover 2 can also remove the entire primary crushing assembly 4 from inside the grinding cylinder 1, which further facilitates cleaning and maintenance of the components.

[0036] Furthermore, multiple sets of grinding plates 406 are fixedly connected to the rotating shaft 402 via mounting sleeves 409, and the multiple sets of grinding plates 406 are evenly distributed on the outer side of the mounting sleeves 409. Multiple sets of material dispersing blades 410 are fixedly connected to the bottom end of the rotating shaft 402 and the top end of the discharge pipe 5. The grinding plates 406 can be disassembled and maintained. The multiple sets of grinding plates 406 are used to break up the pulverized dry powder clumps, thereby improving the pulverization effect. At the same time, the multiple sets of material dispersing blades 410 can avoid material blockage when the rotating shaft 402 rotates.

[0037] The crushing frame 605 has a crushing head 606 fixedly installed on the left side. Multiple crushing wheels 607 are rotatably connected inside the crushing frame 605, and all the crushing wheels 607 are in contact with the inner side of the sieve cylinder 604. When the crushing frame 605 rotates, the high-speed rotating crushing head 606 can further crush the powder, and at the same time, the crushing wheels 607 can grind the powder, so that the powder is finally ground into powder and passes through the sieve cylinder 604.

[0038] Furthermore, a cooling chamber 101 is provided in the inner wall of the grinding cylinder 1. Water pipes 102 are fixedly connected to both the upper and lower ends of the outer side of the grinding cylinder 1, and both sets of water pipes 102 are connected to the inside of the cooling chamber 101. When the dry powder is crushed, cooling water is continuously introduced into the cooling chamber 101 through the water pipes 102 to continuously cool the grinding cylinder 1, thereby avoiding continuous temperature rise that may affect the anti-corrosion performance of the coating and reducing the risk of explosion.

[0039] Secondly, the outer side of the cylinder cover 2 is fixedly connected to the grinding cylinder 1 by multiple sets of latches 201, and a rubber sealing gasket 202 is fixedly connected to the bottom of the cylinder cover 2. The multiple sets of latches 201 facilitate the disassembly and assembly of the cylinder cover 2, and the rubber sealing gasket 202 can improve the sealing performance when the cylinder cover 2 is closed.

[0040] Finally, a cover 301 is rotatably connected to the top of the feed pipe 3, a baffle 302 is rotatably connected to the top of the inside of the feed pipe 3, two sets of slowing plates 303 are fixedly connected to the bottom of the feed pipe 3, and a valve 501 is installed at the bottom of the discharge pipe 5. When the cover 301 is opened, the clump of dry powder is fed into the feed pipe 3. The slowing plates 303 prevent the feed from being too fast and causing dust. After the dry powder is fed into the feed pipe, the baffle 302 is always closed, thereby preventing too much air from entering the interior of the grinding cylinder 1 and further reducing the risk of explosion. The discharge speed of the discharge pipe 5 can be controlled by the valve 501.

[0041] In this embodiment, the specific implementation scenario is as follows: The cap 301 is opened, and the clump of dry powder is fed into the feed pipe 3. A buffer plate 303 prevents the feed from being too rapid and causing dust. After the dry powder is fed in, the baffle 302 remains closed to prevent excessive air entry. The first motor 401 is started, driving the rotating shaft 402 to rotate. The rotating crushing roller 405 initially crushes the dry powder, which then passes through the sieve plate 403 and enters the bottom of the grinding cylinder 1. Multiple sets of rotating grinding plates 406 further break up the crushed dry powder, thereby improving the crushing effect. The crushed and broken dry powder is then discharged into the guide hood 60 through the discharge pipe 5. Inside the grinding cylinder 1, the second motor 603 drives the crushing frame 605 to rotate at high speed to further grind and crush the powder. The fully crushed powder passes through the sieve cylinder 604 and is finally discharged as powder through the bottom of the discharge hood 602. When crushing dry powder, cooling water is continuously introduced into the cooling chamber 101 through the water pipe 102 to continuously cool the grinding cylinder 1. The whole operation process is simple and convenient. This utility model not only ensures the crushing and grinding effect through secondary processing, but also enables continuous feeding and discharging for continuous production, thereby greatly improving production efficiency. At the same time, it avoids continuous heating from affecting the anti-corrosion performance of the coating and reduces the risk of explosion.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An explosion-proof sand mill for producing anti-corrosion coatings, comprising a grinding cylinder (1), characterized in that: The top of the grinding cylinder (1) is fixedly installed with a cylinder cover (2), the top of the cylinder cover (2) is fixedly installed with a feed pipe (3), the inside of the grinding cylinder (1) is installed with a primary crushing component (4), the bottom end of the grinding cylinder (1) is fixedly connected with a discharge pipe (5), and the bottom end of the discharge pipe (5) is fixedly installed with a secondary crushing component (6). The primary crushing assembly (4) includes a first motor (401) fixedly installed on the top of the cylinder cover (2). A rotating shaft (402) is fixedly installed on the drive end of the first motor (401) and inside the grinding cylinder (1). A sieve plate (403) is rotatably connected to the outside of the rotating shaft (402), and the sieve plate (403) is mounted inside the grinding cylinder (1) through a receiving ring (404). Two sets of crushing rollers (405) are rotatably connected to the outside of the rotating shaft (402) and above the sieve plate (403). Multiple sets of grinding plates (406) are fixedly installed at the bottom end of the rotating shaft (402). The secondary crushing assembly (6) includes a guide cover (601) fixedly installed at the bottom of the discharge pipe (5), a discharge cover (602) fixedly installed on the right side of the guide cover (601), a second motor (603) fixedly installed on the right side of the discharge cover (602), a screen cylinder (604) fixedly installed inside the discharge cover (602), and a crushing frame (605) fixedly installed on the drive end of the second motor (603) and located inside the screen cylinder (604).

2. The explosion-proof sand mill for producing anti-corrosion coatings according to claim 1, characterized in that: The outer side of the rotating shaft (402) is rotatably connected to the cylinder cover (2) and the sieve plate (403) through the bushing (407). The top of the receiving ring (404) is symmetrically connected with two sets of positioning columns (408), and both sets of positioning columns (408) are inserted into the sieve plate (403).

3. The explosion-proof sand mill for producing anti-corrosion coatings according to claim 1, characterized in that: The multiple sets of grinding plates (406) are fixedly connected to the rotating shaft (402) through the mounting sleeve (409), and the multiple sets of grinding plates (406) are distributed at equal intervals on the outside of the mounting sleeve (409).

4. The explosion-proof sand mill for producing anti-corrosion coatings according to claim 1, characterized in that: Multiple sets of material discharge blades (410) are fixedly connected to the bottom end of the rotating shaft (402) and the top end of the discharge pipe (5).

5. The explosion-proof sand mill for producing anti-corrosion coatings according to claim 1, characterized in that: A crushing head (606) is fixedly installed on the left side of the crushing frame (605). Multiple crushing wheels (607) are rotatably connected inside the crushing frame (605), and all the crushing wheels (607) are in contact with the inner side of the sieve cylinder (604).

6. The explosion-proof sand mill for producing anti-corrosion coatings according to claim 1, characterized in that: A cooling chamber (101) is provided in the inner wall of the grinding cylinder (1). Water pipes (102) are fixedly connected to the upper and lower ends of the outer side of the grinding cylinder (1), and both sets of water pipes (102) are connected to the interior of the cooling chamber (101).

7. The explosion-proof sand mill for producing anti-corrosion coatings according to claim 1, characterized in that: The outer side of the cylinder cover (2) is fixedly connected to the grinding cylinder (1) by multiple sets of latches (201), and a rubber sealing gasket (202) is fixedly connected to the bottom of the cylinder cover (2).

8. The explosion-proof sand mill for producing anti-corrosion coatings according to claim 1, characterized in that: The top of the feed pipe (3) is rotatably connected to a cover (301), the top of the inside of the feed pipe (3) is rotatably connected to a baffle (302), and the bottom of the feed pipe (3) is fixedly connected to two sets of slowing plates (303).

9. The explosion-proof sand mill for producing anti-corrosion coatings according to claim 1, characterized in that: A valve (501) is installed at the bottom end of the discharge pipe (5).

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