Magnesium chloride crystallization device

Abstract

The utility model relates to a magnesium chloride crystallization device, which relates to the technical field of magnesium chloride production equipment, and comprises a tank body and a scraping plate positioned on the inner wall of the tank body, the tank body is provided with a lifting assembly for driving the scraping plate to slide along the height direction of the tank body, and the inner side wall of the scraping plate is provided with a dovetail groove. A dovetail block is arranged in the dovetail groove in a sliding mode, the end, located outside the dovetail groove, of the dovetail block is integrally connected with a cleaning block, and the end wall of the cleaning block abuts against the bottom wall of the scraper. A rack is fixedly arranged on the bottom wall of the dovetail groove, a driving gear is rotationally arranged at the end, away from the cleaning block, of the dovetail block, and the driving gear is meshed with the rack. A rotating assembly is arranged on the dovetail block and used for driving the driving gear to rotate. The device has the advantages that crystals and impurities on the scraping plate can be conveniently cleaned, and the scraping plate is kept to have a good scraping effect on the crystals on the inner wall of the tank body.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of magnesium chloride production equipment, especially to a magnesium chloride crystallization device. BACKGROUND

[0002] Magnesium chloride is a kind of chemical substance containing magnesium, which is mainly used for producing thermal insulation materials, refractory materials, coatings, abrasive materials and some auxiliary materials for producing metal products. The crystallization in the crystallization device for magnesium chloride production refers to the oversaturation of solution caused by the decrease of solubility after the cooling of hot saturated solution, so that the solute is precipitated in the form of crystal. This process is called crystallization, and crystallization is a common process in chemical production.

[0003] In the related art, there is a crystallization device, which comprises a tank body, a hot air pipe and a cold air pipe connected with the tank body, an annular scraper is arranged on the inner wall of the tank body and abuts against the inner wall of the tank body, and a lifting assembly for driving the scraper to slide in the vertical direction is arranged on the tank body. During the crystallization operation, a sufficient amount of magnesium chloride solution is first added into the tank body, then hot air is introduced into the tank body through the hot air pipe, the temperature in the tank body is increased, so that the water in the solution is evaporated, and after a period of time, cold air is introduced into the tank body through the cold air pipe, the temperature in the tank body is reduced, and the magnesium chloride is cooled and crystallized. At the same time, the scraper is driven to descend in the tank body by the lifting assembly, and the scraper can scrape off the crystals adhering to the inner wall of the tank body.

[0004] In the implementation of the present application, it is found that at least the following problems exist in the prior art: After a long time of use, the surface of the scraper will adhere to crystals and impurities, which will affect the scraping effect of the scraper on the crystals on the inner wall of the tank body, and therefore needs to be improved. UTILITY MODEL CONTENTS

[0005] In order to facilitate the cleaning of the crystals and impurities on the scraper and maintain the good scraping effect of the scraper on the crystals on the inner wall of the tank body, the present application provides a magnesium chloride crystallization device.

[0006] The magnesium chloride crystallization device provided by the present application adopts the following technical scheme:

[0007] The application relates to a magnesium chloride crystallization device which comprises a tank body and scrapers arranged on the inner wall of the tank body, the scrapers are arranged in a ring shape, a lifting assembly for driving the scrapers to slide along the height direction of the tank body is arranged on the tank body, the outer side wall of the scraper abuts against the inner wall of the tank body, the inner side wall of the scraper is provided with a dovetail groove, the length direction of the dovetail groove is arranged along the circumferential direction of the scraper, a dovetail block is slidably arranged in the dovetail groove, a cleaning block is integrally connected to one end of the dovetail block which is located outside the dovetail groove, and the end wall of the cleaning block abuts against the bottom wall of the scraper; a rack is fixedly arranged on the bottom wall of the dovetail groove, the length direction of the rack is arranged along the length direction of the dovetail groove, a driving gear is rotatably arranged at one end of the dovetail block which is away from the cleaning block, and the driving gear is in mesh with the rack; and a rotating assembly is arranged on the dovetail block and used for driving the driving gear to rotate.

[0008] Preferably, the driving gear is rotatably arranged on the dovetail block through a rotating shaft, the rotating assembly comprises a first motor, a main bevel gear and a negative bevel gear, the first motor is fixedly arranged in the dovetail block, the main bevel gear is connected with the driving shaft of the first motor, the negative bevel gear is fixedly arranged on the rotating shaft, and the negative bevel gear is in mesh with the main bevel gear.

[0009] Preferably, the side wall of the cleaning block is obliquely provided with a flow guide surface.

[0010] Preferably, the bottom wall of the tank body is provided with a discharge port, the inner wall of the tank body and located at the bottom end is provided with a mounting block, the mounting block is located above the discharge port, the side wall of the mounting block is provided with an abutting piece which can abut against the flow guide surface, the abutting piece is rotatably connected with the mounting block, and a torsional spring is arranged at the rotatable connection between the abutting piece and the mounting block.

[0011] Preferably, the lifting assembly comprises a second motor, a lead screw and a guide rod, the lead screw and the guide rod are symmetrically arranged in the tank body, the lead screw is rotatably arranged in the tank body, the guide rod is fixedly arranged in the tank body, the scraper is slidably arranged on the guide rod and threadedly connected with the lead screw, the second motor is fixedly arranged on the tank body, and the driving shaft of the second motor is connected with the lead screw.

[0012] In summary, the application has at least one of the following beneficial technical effects:

[0013] 1. By arranging the scrapers, the lifting assembly, the dovetail groove, the dovetail block, the cleaning block, the rack, the driving gear and the rotating assembly, the driving gear can be driven to rotate by the rotating assembly after the scrapers are used for a long time, the driving gear can abut against the rack, the dovetail block can slide in the dovetail groove, the cleaning block can slide on the bottom wall of the scraper, the small cleaning block can effectively clean the crystals and impurities adhered to the scraper during the sliding process, and the scraper has good scraping effect.

[0014] 2. By setting up a guide surface, mounting block, abutment plate, and torsion spring, when using the cleaning block to clean the bottom wall of the scraper, the lifting component moves the scraper close to the mounting block, so that the mounting block and the cleaning block are on the same horizontal plane. Then, the rotating component controls the sliding of the cleaning block, so that the cleaning block continuously moves closer to the side of the mounting block facing the abutment plate, until the abutment plate abuts against the guide surface on the cleaning block. Because the guide surface is inclined, when the cleaning block slides, the end of the abutment plate away from the mounting block slides on the guide surface. The abutment plate rotates between the abutment plate and the mounting block, and the abutment plate can clean the residual crystallized impurities on the mounting block. After cleaning is completed, the cleaning block moves away from the mounting block, and at this time, the abutment surface is automatically reset under the action of the torsion spring. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a magnesium chloride crystallization apparatus disclosed in an embodiment of this application.

[0016] Figure 2 yes Figure 1 Enlarged view of section A.

[0017] Figure 3 This is a schematic diagram illustrating the connection relationship between the cleaning block and the dovetail block in the embodiments of this application.

[0018] Explanation of reference numerals in the attached drawings: 1. Tank body; 11. Discharge port; 2. Scraper; 3. Lifting assembly; 31. Second motor; 32. Lead screw; 33. Guide rod; 4. Dovetail groove; 41. Dovetail block; 5. Cleaning block; 51. Guide surface; 6. Rack; 61. Drive gear; 611. Rotating shaft; 7. Rotating assembly; 71. First motor; 72. Main bevel gear; 73. Negative bevel gear; 8. Mounting block; 81. Abutment plate; 82. Torsion spring. Detailed Implementation

[0019] The following is in conjunction with the appendix Figures 1-3 This application will be described in further detail.

[0020] This application discloses a magnesium chloride crystallization apparatus. (Refer to...) Figure 1The device includes a cylindrical tank 1 and a scraper 2 located on the inner wall of the tank 1. The scraper 2 is arranged in a ring, with its outer wall abutting against the inner wall of the tank 1. The scraper 2 and the tank 1 are coaxially arranged. A lifting assembly 3 is provided on the tank 1 to drive the scraper 2 to slide along the height direction of the tank 1. The lifting assembly 3 includes a second motor 31, a lead screw 32, and a guide rod 33. The lead screw 32 and the guide rod 33 are symmetrically arranged inside the tank 1 along the height direction of the tank 1. The lead screw 32 is rotatably disposed inside the tank 1, and the guide rod 33 is fixedly disposed inside the tank 1. The scraper 2 is slidably disposed on the guide rod 33 and threadedly connected to the lead screw 32. The second motor 31 is fixedly disposed on the tank 1 by bolts, and the drive shaft of the second motor 31 is connected to the lead screw 32. The bottom wall of the tank 1 is provided with a discharge port 11. The bottom wall of the tank 1 is inclined towards the discharge port 11 to facilitate the automatic discharge of the crystals through the discharge port 11 under gravity. After magnesium chloride crystallizes in the tank 1, the second motor 31 drives the lead screw 32 to rotate. The guide rod 33 guides the scraper 2. The scraper 2 can slide vertically in the tank 1. The scraper 2 is driven to slide from the top of the tank 1 towards the discharge port 11 at the bottom. The scraper 2 can scrape off the crystals adhering to the inner wall of the tank 1. The crystals scraped off under gravity can be discharged from the discharge port 11.

[0021] Reference Figure 1 and Figure 2 The inner wall of the scraper 2 has a dovetail groove 4, the length of which is along the circumference of the scraper 2. A dovetail block 41 is slidably disposed within the dovetail groove 4, the outer wall of which is in contact with the inner wall of the dovetail groove 4. A cleaning block 5 is integrally connected to one end of the dovetail block 41 outside the dovetail groove 4, and the end wall of the cleaning block 5 abuts against the bottom wall of the scraper 2. A rack 6 is fixedly disposed on the bottom wall of the dovetail groove 4, the length of which is along the length of the dovetail groove 4. A drive gear 61 is rotatably disposed at the end of the dovetail block 41 away from the cleaning block 5 via a rotating shaft 611, and the drive gear 61 meshes with the rack 6. The dovetail block 41 is equipped with a rotating component 7. After long-term use, the scraper 2 uses the rotating component 7 to drive the drive gear 61 to rotate, which can drive the drive gear 61 to abut against the rack 6, control the dovetail block 41 to slide in the dovetail groove 4, and then drive the cleaning block 5 to slide on the bottom wall of the scraper 2. Since the cleaning block 5 is small, it can effectively clean the crystals and impurities adhering to the scraper 2 when sliding, ensuring that the scraper 2 has a good scraping effect.

[0022] Reference Figure 2The rotating assembly 7 includes a first motor 71, a main bevel gear 72, and a negative bevel gear 73. The first motor 71 is fixedly mounted inside the dovetail block 41. The main bevel gear 72 is connected to the drive shaft of the first motor 71. The negative bevel gear 73 is fixedly mounted on the rotating shaft 611 and is coaxial with the rotating shaft 611. The negative bevel gear 73 meshes with the main bevel gear 72. When it is necessary to control the rotation of the drive gear 61 to drive the drive gear 61 to abut against the rack 6, the first motor 71 drives the main bevel gear 72 to rotate. The main bevel gear 72 abuts against the negative bevel gear 73, thereby driving the negative bevel gear 73 and the rotating shaft 611 to rotate, quickly controlling the dovetail block 41 to move along the circumference of the scraper 2 within the dovetail groove 4.

[0023] Reference Figure 1 and Figure 3 The cleaning block 5 has an inclined guide surface 51 on its side wall, which makes it easy for the scraped crystallized impurities to fall off the cleaning block 5 under the action of gravity. An installation block 8 is fixedly installed on the inner wall of the tank body 1 at the bottom. The installation block 8 is located above the discharge port 11. The side wall of the installation block 8 is provided with an abutment piece 81 that can abut against the guide surface. The abutment piece 81 is rotatably connected to the installation block 8. A torsion spring 82 is provided at the rotatable connection between the abutment piece 81 and the installation block 8. When cleaning the bottom wall of scraper 2 with cleaning block 5, scraper 2 is brought close to mounting block 8 by lifting component 3 so that mounting block 8 and cleaning block 5 are on the same horizontal plane. Then, the rotating component 7 is used to control the sliding of cleaning block 5, so that cleaning block 5 continuously moves closer to the side of mounting block 8 facing the abutment plate 81 until the abutment plate 81 abuts against the guide surface 51 on cleaning block 5. Since the guide surface 51 is inclined, when cleaning block 5 slides, the end of abutment plate 81 away from mounting block 8 slides on the guide surface 51. The abutment plate 81 rotates between the abutment plate 8 and mounting block 8. The abutment plate 81 can clean the residual crystal impurities on mounting block 8. After cleaning is completed, cleaning block 5 moves away from mounting block 8. At this time, the abutment surface is automatically reset under the force of torsion spring 82.

[0024] The implementation principle of the magnesium chloride crystallization device in this application embodiment is as follows: After the scraper 2 has been used for a long time, the first motor 71 drives the main bevel gear 72 to rotate. The main bevel gear 72 abuts against the negative bevel gear 73, thereby driving the negative bevel gear 73 and the rotating shaft 611 to rotate. This quickly controls the dovetail block 41 to move along the circumference of the scraper 2 in the dovetail groove 4. The dovetail block 41 drives the cleaning block 5 to slide on the bottom wall of the scraper 2. Since the cleaning block 5 is small, it can effectively clean the crystals and impurities adhering to the scraper 2 when it slides, ensuring that the scraper 2 has a good scraping effect on the crystals on the inner wall of the tank 1.

[0025] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A magnesium chloride crystallization device, comprising a tank body (1) and a scraper (2) arranged on the inner wall of the tank body (1), the scraper (2) is arranged in a ring shape, and a lifting assembly (3) for driving the scraper (2) to slide along the height direction of the tank body (1) is arranged on the tank body (1), characterized in that: The outer side wall of the scraper (2) abuts against the inner wall of the tank body (1), the inner side wall of the scraper (2) is provided with a dovetail groove (4), the length direction of the dovetail groove (4) is arranged along the circumferential direction of the scraper (2), the dovetail block (41) is slidably arranged in the dovetail groove (4), one end of the dovetail block (41) located outside the dovetail groove (4) is integrally connected with the cleaning block (5), and the end wall of the cleaning block (5) abuts against the bottom wall of the scraper (2); the bottom wall of the dovetail groove (4) is fixedly provided with a rack (6), the length direction of the rack (6) is arranged along the length direction of the dovetail groove (4), one end of the dovetail block (41) away from the cleaning block (5) is rotatably provided with a drive gear (61), and the drive gear (61) and the rack (6) are meshed with each other; the dovetail block (41) is provided with a rotating assembly (7), and the rotating assembly (7) is used to drive the drive gear (61) to rotate.

2. A magnesium chloride crystallization apparatus according to claim 1, characterized in that: The drive gear (61) is rotatably arranged on the dovetail block (41) through a rotating shaft (611), the rotating assembly (7) comprises a first motor (71), a main bevel gear (72) and a negative bevel gear (73), the first motor (71) is fixedly arranged in the dovetail block (41), the main bevel gear (72) and the driving shaft of the first motor (71) are connected with each other, the negative bevel gear (73) is fixedly arranged on the rotating shaft (611), and the negative bevel gear (73) and the main bevel gear (72) are meshed with each other.

3. The magnesium chloride crystallization apparatus of claim 1, wherein: The side wall of the cleaning block (5) is obliquely provided with a flow guide surface (51).

4. A magnesium chloride crystallization apparatus according to claim 3, characterized in that: The bottom wall of the tank body (1) is provided with a discharge port (11), the inner wall of the tank body (1) and located at the bottom end is provided with a mounting block (8), the mounting block (8) is located above the discharge port (11), the side wall of the mounting block (8) is provided with an abutting piece (81) which can abut against the flow guide surface (51), the abutting piece (81) and the mounting block (8) are rotatably connected, and the torsional spring (82) is arranged at the rotatable connection between the abutting piece (81) and the mounting block (8).

5. The magnesium chloride crystallization apparatus of claim 1, wherein: The lifting assembly (3) comprises a second motor (31), a lead screw (32) and a guide rod (33), the lead screw (32) and the guide rod (33) are symmetrically arranged in the tank body (1), the lead screw (32) is rotatably arranged in the tank body (1), the guide rod (33) is fixedly arranged in the tank body (1), the scraper (2) is slidably arranged on the guide rod (33) and is threadedly connected with the lead screw (32), and the second motor (31) is fixedly arranged on the tank body (1). The driving shaft of the second motor (31) and the lead screw (32) are connected with each other.

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