Basic magnesium carbonate purification and winnowing complete equipment

Abstract

The utility model discloses basic magnesium carbonate purification and winnowing complete equipment which comprises a negative pressure conveying device, the negative pressure conveying device is connected with a buffer stock bin, the buffer stock bin is connected with an air flow sieve, the air flow sieve is connected with a cyclone separator, a lower outlet of the cyclone separator is connected with a finished product stock bin, and an upper outlet of the cyclone separator is connected with a bag-type dust collector. The bag-type dust collector is connected with an induced draft fan, and the negative pressure conveying device is connected with an air pump. Compared with the prior art, the device has the beneficial effects that impurities in magnesium carbonate material packages can be effectively removed, magnesium carbonate products with different stacking densities can be screened by setting parameters, the material loss is small, and the efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of basic magnesium carbonate production, in particular to a complete set of equipment for purifying and pneumatic separating basic magnesium carbonate. Background Technique

[0002] Basic magnesium carbonate is an important inorganic chemical raw material, mainly used as a filler and reinforcing agent for transparent or light-colored rubber products, and can enhance the wear resistance, bending resistance and tensile strength of rubber. The industrial preparation methods mainly include bittern-soda method, meiling ore or dolomite method, solution method, solid reaction method, magnesium hydroxide method, etc. Among them, the bittern-soda method uses bittern or brine and soda ash as raw materials. The bittern is added to the reactor, and then soda ash is added under continuous stirring. After the reaction is completed, vacuum suction filtration is carried out, then centrifugal dehydration is carried out, and finally the product is obtained through centrifugal separation, drying, crushing, screening and packaging.

[0003] In the production process of basic magnesium carbonate, the processes of crushing and impurity removal are required to improve the purity of magnesium carbonate and the uniformity of samples. The existing impurity removal equipment is all of the filter screen type. Due to its material characteristics, the efficiency is low, and the proportion of material waste is relatively large, which cannot meet the requirements of removing light impurities. Content of the Utility Model

[0004] In order to solve the above technical problems, the utility model provides a complete set of equipment for purifying and pneumatic separating basic magnesium carbonate. The equipment can effectively remove impurities in the basic magnesium carbonate material package, and can screen basic magnesium carbonate products with different bulk densities respectively through parameter setting.

[0005] To achieve this technical purpose, the utility model adopts the following scheme:

[0006] A complete set of equipment for purifying and pneumatic separating basic magnesium carbonate includes a negative pressure conveying device, the negative pressure conveying device is connected with a buffer bin, the buffer bin is connected with a pneumatic sieve, the pneumatic sieve is connected with a cyclone separator, the lower outlet of the cyclone separator is connected with a finished product bin, the upper outlet of the cyclone separator is connected with a bag filter, the bag filter is connected with an induced draft fan, and the negative pressure conveying device is connected with an air pump.

[0007] Further, the negative pressure conveying device includes a first cylinder body and a second cylinder body. The bottoms of the first cylinder body and the second cylinder body are communicated. Feeding ports are arranged in the middle of the first cylinder body and the second cylinder body. The feeding ports are connected with a crusher. The tops of the first cylinder body and the second cylinder body are connected with the air pump. A first feeder is arranged at the bottom of the negative pressure conveying device, and the first feeder is connected with the buffer bin.

[0008] Further, a feed inlet, a first discharge outlet, and an air inlet are provided at the top of the buffer bin. The feed inlet is connected to the first feeder, and an air inlet filter cartridge is provided at the air inlet. A partition is provided inside the buffer bin, and the partition is arranged between the feed inlet and the first discharge outlet; a quick-opening manhole is provided on the side wall of the buffer bin, and the first discharge outlet is connected to the air flow sieve.

[0009] The main function of the buffer bin is to preliminarily screen the materials to prevent the light magnesium carbonate materials from wrapping heavier impurities and transporting them to subsequent equipment together. Since the magnesium carbonate materials themselves are too light in specific gravity, this buffer bin needs to have functions of adjusting wind pressure, wind speed, and air volume, separating and adjusting the feed inlet and the first discharge outlet, and adjusting the depth of the discharge outlet pipeline.

[0010] Further, a motor is provided at the top of the cylinder body of the air flow sieve, and the output end of the motor is connected to the air flow sieve plate; a second discharge outlet is provided at the upper part of the air flow sieve cylinder body, and the second discharge outlet is connected to the cyclone separator; a material suction inlet is provided at the bottom of the air flow sieve, and the material suction inlet is connected to the buffer bin; a discharge hopper is provided at the lower part of the air flow sieve, a diversion pipe is provided at the upper part of the discharge hopper, and a second feeder is connected to the lower part of the discharge hopper.

[0011] The main function of the air flow sieve is to screen basic magnesium carbonate, and the production capacity of the whole set of equipment and the bulk density of basic magnesium carbonate can be regulated by controlling the frequency of the air separation device of the air flow sieve.

[0012] Further, a baffle ring is provided above the air flow sieve plate to prevent the materials from directly entering the subsequent cyclone separator without screening.

[0013] Further, an outlet air pipe is provided at the top of the cyclone separator, and the outlet air pipe is connected to the bag filter. An inlet air pipe is provided at the upper part of the cyclone separator, and the inlet air pipe is connected to the air flow sieve. The lower end of the cyclone separator is connected to the finished product bin.

[0014] Furthermore, the number of cyclone separators is 2. The inlet air pipe is a Y-shaped distributor. The air inlet end is connected to the air flow sieve, and the air outlet ends are respectively connected to the cyclone separators. The top outlets of the two cyclone separators are both connected to the outlet air pipe.

[0015] Further, a third feeder is provided at the lower part of the finished product bin and is connected to the product packaging machine for primary finished product packaging.

[0016] Further, a fourth feeder is provided at the lower part of the bag filter and is connected to the product packaging machine for secondary finished product packaging.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] The utility model can effectively remove impurities in the magnesium carbonate material package, and can screen magnesium carbonate products with different bulk densities by setting parameters, with small material loss and high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the complete set of equipment for the purification and pneumatic separation of basic magnesium carbonate in the embodiment of the utility model;

[0020] Figure 2 It is a schematic diagram of the negative pressure conveying device in the embodiment of the utility model;

[0021] Figure 3 It is a schematic diagram of the buffer bin in the embodiment of the utility model;

[0022] Figure 4 is Figure 3 top view of;

[0023] Figure 5 It is a schematic diagram of the air flow sieve in the embodiment of the utility model;

[0024] Figure 6 It is a schematic diagram of the cyclone separator and the finished product bin in the embodiment of the utility model;

[0025] The marks in the figure are: 1, negative pressure conveying device; 101, first cylinder; 102, second cylinder; 103, material suction port; 104, first feeder; 2, buffer bin; 201, feed inlet; 202, first discharge port; 203, inlet air filter cartridge; 204, partition board; 205, quick-opening manhole; 3, air flow sieve; 301, material suction inlet; 302, motor; 303, second discharge port; 304, air flow sieve plate; 305, discharge hopper; 306, second feeder; 307, guide pipe; 308, baffle ring; 4, cyclone separator; 401, outlet air duct; 402, inlet air duct; 5, finished product bin; 501, third feeder; 6, bag filter; 601, fourth feeder; 7, induced draft fan; 8, air pump. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] To fully understand the purpose, features and effects of the utility model, the utility model will be described in detail through the following specific embodiments, but the utility model is not limited thereto.

[0027] See Figure 1, the present utility model provides a technical solution: a complete set of equipment for purifying and pneumatically separating basic magnesium carbonate, including a negative pressure conveying device 1, a buffer bin 2, an air flow sieve 3, a cyclone separator 4, a finished product bin 5, a bag filter 6, a draft fan 7 and an air pump 8; the negative pressure conveying device 1 is connected to the buffer bin 2, the buffer bin 2 is connected to the air flow sieve 3, the air flow sieve 3 is connected to the cyclone separator 4, the lower outlet of the cyclone separator 4 is connected to the finished product bin 5, the upper outlet of the cyclone separator 4 is connected to the bag filter 6, the bag filter 6 is connected to the draft fan 7, the draft fan 7 is provided with a frequency conversion control system, and the air volume can be adjusted according to the actual working conditions. The negative pressure conveying device 1 is connected to the air pump 8, and the air pump 8 is a two-stage vortex air pump.

[0028] See Figure 2 , the negative pressure conveying device 1 includes a first cylinder 101 and a second cylinder 102. The bottoms of the first cylinder 101 and the second cylinder 102 are connected. A material suction port 103 is arranged in the middle of the first cylinder 101 and the second cylinder 102. The material suction port 103 is connected to a pulverizer. The tops of the first cylinder 101 and the second cylinder 102 are connected to the air pump 8. A first feeder 104 is arranged at the bottom of the negative pressure conveying device 1, and the first feeder 104 is connected to the buffer bin 2.

[0029] See Figure 3 and Figure 4 , the top of the buffer bin 2 is provided with a feed inlet 201, a first discharge outlet 202 and an air inlet. The feed inlet 201 is connected to the first feeder 104. An air inlet filter cartridge 203 is arranged at the air inlet. A partition 204 is arranged inside the buffer bin 2, and the partition 204 is arranged between the feed inlet 201 and the first discharge outlet 202; a quick-opening manhole 205 is arranged on the side wall of the buffer bin 2, and the first discharge outlet 202 is connected to the material suction inlet 301 of the air flow sieve 3.

[0030] The main function of the buffer bin 2 is to preliminarily screen the materials to avoid the light magnesium carbonate materials from wrapping heavier impurities and being transported to subsequent equipment together. Because the specific gravity of the magnesium carbonate materials themselves is too light, the buffer bin 2 needs to have the functions of adjusting the wind pressure, wind speed and air volume, the function of separating and adjusting the feed inlet 201 and the first discharge outlet 202, and the function of adjusting the pipeline depth of the first discharge outlet 202.

[0031] See Figure 5, a motor 302 is provided at the top of the cylinder body of the air flow sieve 3. The output end of the motor 302 is connected to an air flow sieve plate 304. A material retaining ring 308 is provided above the air flow sieve plate 304 to prevent the material from directly entering the subsequent cyclone separator 4 without screening. A second discharge port 303 is provided in the upper part of the cylinder body of the air flow sieve 3, and the second discharge port 303 is connected to the cyclone separator 4. A material suction inlet 301 is provided at the bottom of the air flow sieve 3, and the material suction inlet 301 is connected to the first discharge port 202 of the buffer bin 2. A discharge hopper 305 is provided in the lower part of the air flow sieve 3. A diversion pipe 307 is provided in the upper part of the discharge hopper 305. The lower part of the discharge hopper 305 is connected to a second blanking device 306, and the second blanking device 306 is used to discharge material impurities.

[0032] The main function of the air flow sieve 3 is to screen basic magnesium carbonate, and the production capacity of the whole set of equipment and the bulk density of basic magnesium carbonate can be adjusted by controlling the frequency of the air separation device.

[0033] See Figure 6 , an outlet air pipe 401 is provided at the top of the cyclone separator 4. The outlet air pipe 401 is connected to the bag filter 6. An inlet air pipe 402 is provided in the upper part of the cyclone separator 4. The inlet air pipe 402 is connected to the air flow sieve 3. The lower end of the cyclone separator 4 is connected to the finished product bin 5. A third blanking device 501 is provided in the lower part of the finished product bin 5. A fourth blanking device 601 is provided in the lower part of the bag filter 6. The third blanking device 501 and the fourth blanking device 601 are respectively connected to the product packaging machine for finished product packaging.

[0034] In another embodiment, two cyclone separators 4 are provided. The inlet air pipe 402 is a Y-shaped distributor. The air inlet end of the inlet air pipe 402 is connected to the air flow sieve 3, and the air outlet ends are respectively connected to the cyclone separators 4. The top outlets of the two cyclone separators 4 are both connected to the outlet air pipe 401.

[0035] Finally, it should be noted that: the above-listed are only the preferred embodiments of the present invention. Of course, those skilled in the art can make changes and modifications to the present invention. If these modifications and variations fall within the scope of the claims of the present invention and its equivalent technologies, they should all be considered as the protection scope of the present invention.

Claims

1. A complete set of equipment for purification and air separation of basic magnesium carbonate, comprising a negative pressure conveying device (1), characterized in that: The negative pressure conveying device (1) is connected to a buffer silo (2), the buffer silo (2) is connected to an air flow screen (3), the air flow screen (3) is connected to a cyclone separator (4), the lower outlet of the cyclone separator (4) is connected to a finished product silo (5), the upper outlet of the cyclone separator (4) is connected to a bag dust collector (6), the bag dust collector (6) is connected to an induced draft fan (7), and the negative pressure conveying device (1) is connected to an air pump (8).

2. The complete set of equipment for purification and air separation of basic magnesium carbonate according to claim 1, characterized in that: The negative pressure conveying device (1) comprises a first cylinder (101) and a second cylinder (102); the first cylinder (101) and the second cylinder (102) are connected at the bottom; a suction port (103) is arranged in the middle of the first cylinder (101) and the second cylinder (102); the suction port (103) is connected to a pulverizer; the tops of the first cylinder (101) and the second cylinder (102) are connected to an air pump (8); a first discharger (104) is arranged at the bottom of the negative pressure conveying device (1); and the first discharger (104) is connected to a buffer silo (2).

3. The complete set of equipment for purification and air separation of basic magnesium carbonate according to claim 1, characterized in that: The top of the buffer silo (2) is provided with a feed port (201), a first discharge port (202) and an air inlet, the feed port (201) is connected to the first feeder (104), the air inlet is provided with an air inlet filter cartridge (203), a partition (204) is provided inside the buffer silo (2), and the partition (204) is provided between the feed port (201) and the first discharge port (202); a quick-open hand hole (205) is provided on the side wall of the buffer silo (2); and the first discharge port (202) is connected to the air flow screen (3).

4. The complete set of equipment for purification and air separation of basic magnesium carbonate according to claim 1, characterized in that: A motor (302) is provided at the top of the cylinder of the air flow screen (3), and the output end of the motor (302) is connected to the air flow screen plate (304); a second discharge port (303) is provided at the upper part of the cylinder of the air flow screen (3), and the second discharge port (303) is connected to the cyclone separator (4); a suction inlet (301) is provided at the bottom of the air flow screen (3), and the suction inlet (301) is connected to the buffer silo (2); a discharge hopper (305) is provided at the lower part of the air flow screen (3), a guide pipe (307) is provided at the upper part of the discharge hopper (305), and a second discharger (306) is connected to the lower part of the discharge hopper (305).

5. The complete set of equipment for purification and air separation of basic magnesium carbonate according to claim 4, characterized in that: A material retaining ring (308) is provided above the air flow screen plate (304).

6. The complete set of equipment for purification and air separation of basic magnesium carbonate according to claim 1, characterized in that: An outlet air duct (401) is provided at the top of the cyclone separator (4), the outlet air duct (401) is connected to the bag dust collector (6), an inlet air duct (402) is provided at the top of the cyclone separator (4), the inlet air duct (402) is connected to the air flow screen (3), and the lower end of the cyclone separator (4) is connected to the finished product silo (5).

7. The complete set of equipment for purification and air separation of basic magnesium carbonate according to claim 1, characterized in that: A third feeder (501) is provided at the lower part of the finished product bin (5).

8. The complete set of equipment for purification and air separation of basic magnesium carbonate according to claim 1, characterized in that: A fourth feeder (601) is provided at the lower part of the bag filter (6).

Images