Horizontal crystallizer

Abstract

The utility model relates to the technical field of crystallization devices, and particularly discloses a horizontal crystallizer, which comprises a cylindrical tank body, a jacket sleeved outside the tank body, a refrigerant inlet connected to the lower part of the jacket, a refrigerant outlet connected to the upper part of the jacket, a feed port arranged on the upper part of the tank body, a liquid outlet arranged on the lower part of the tank body and a crystal discharge port arranged on the lower part of the tank body, a hollow spiral shaft is rotatably arranged in the middle of the tank body and communicated with a rotary connector, the rotary connector is arranged outside the tank body, the end, away from the rotary connector, of the spiral shaft penetrates through the right end cover and then is connected with a driving mechanism, and a scraping mechanism rotating reversely with the spiral shaft is arranged on the inner wall of the tank body in a matched mode. And the scraping mechanism is connected with the spiral shaft through a transmission mechanism. The spiral shaft and the scraping mechanism rotate reversely and are connected through the transmission mechanism, so that the material mixing and stirring effect is greatly improved, crystals are prevented from being attached and accumulated on the inner wall of the tank body, crystallization is more uniform, the product quality is improved, meanwhile, the equipment cleaning and maintaining frequency is effectively reduced, and cleaning is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to crystallization device technical field, specifically disclose a horizontal crystallization machine. BACKGROUND

[0002] Horizontal crystallization machine is a kind of equipment for crystallization, usually adopt horizontal placement, is widely used in chemical industry, pharmacy, food industry etc. The saturated solution is injected from feed inlet, gradually reduces temperature under the action of cooling medium according to process requirement, and the solubility of solute is reduced, thereby adhering around the seed crystal, gradually grows to form crystal. Stirring device makes seed crystal and supersaturated liquid fully contact and mix, avoids false crystal generation, and guarantees that crystal particle size is uniform.

[0003] In the horizontal crystallization machine of prior art, material is easy to crystallize on the inner wall of tank body, in order to reduce the crystallization on the inner wall, Chinese patent CN211158665U discloses a high-efficiency horizontal crystallization structure, including a horizontal long-cylinder full-sealed machine body, a crystallization structure installed in the machine body and a driving device connected with the crystallization structure and driving work, the machine body includes an outer cylinder body and an inner cylinder body, 2 or more than 2 supporting plates are arranged between the outer cylinder body and the inner cylinder body, the outer surface of the machine body is provided with a cooling water outlet, a cooling water inlet, a discharge port and a feed inlet, the crystallization structure includes an inner hollow transmission shaft connected with the driving device and an inner hollow semi-spiral transmission blade installed on the transmission shaft, the inner surface of the inner cylinder body is provided with a disturbance plate for disturbing material and a turbulence assembly for strengthening turbulence effect, and the turbulence assembly is formed by a plurality of annular pipes arranged at intervals.

[0004] In the above scheme, although the crystallization on the inner wall of tank body is reduced by the arrangement of disturbance plate and turbulence assembly, crystallization still cannot be avoided, which affects the quality of finished product, and the cooling water in the rotating shaft does not circulate, which leads to poor cooling effect, thereby affecting the crystallization efficiency. UTILITY MODEL CONTENTS

[0005] According to the deficiencies in the above prior art, the utility model provides a horizontal crystallization machine to solve the problems that crystallization still cannot be avoided on the inner wall of tank body, which affects the quality of finished product, and the crystallized material is more difficult to remove.

[0006] The technical scheme adopted by the utility model to solve its technical problems is:

[0007] The horizontal crystallizer comprises a cylindrical tank body, a jacket is arranged on the tank body, a coolant inlet is connected to the lower part of the jacket, a coolant outlet is connected to the upper part of the jacket, a feeding port is arranged on the upper part of the tank body, a liquid outlet and a crystallization discharge port are arranged on the lower part of the tank body, a hollow spiral shaft is rotatably arranged in the middle part of the tank body, the spiral shaft is connected with a rotary joint, the rotary joint is arranged outside the tank body, a driving mechanism is connected to the end of the spiral shaft away from the rotary joint through the tank body, a scraping mechanism that rotates in the opposite direction of the spiral shaft is arranged on the inner wall of the tank body in a matched mode, and the scraping mechanism and the spiral shaft are connected through a transmission mechanism. The spiral shaft and the scraping mechanism rotate in the opposite directions and are connected through the transmission mechanism, so that the mixing and stirring effect of the material is greatly improved, the crystal is prevented from adhering and accumulating on the inner wall of the tank body, the crystallization is more uniform, the product quality is improved, the cleaning and maintenance frequency of the equipment is effectively reduced, and the cleaning is convenient; the tank body and the jacket are combined, the coolant inlet and the coolant outlet are arranged, the jacket can efficiently take away heat, the crystallization temperature is accurately controlled, and the crystallization process is stable; the feeding port, the liquid outlet and the crystallization discharge port are reasonably arranged, the material is convenient to enter and exit, and the production continuity is improved; the hollow spiral shaft is connected through the rotary joint, the stable rotation of the spiral shaft is ensured, the internal cooling water can be introduced, the cooling effect is ensured, and the cooling and crystallization efficiency is improved.

[0008] Preferably, the spiral shaft comprises a rotating shaft and spiral blades fixedly arranged on the outer wall of the rotating shaft, the rotating shaft is rotatably arranged on the left end cover and the right end cover at the two ends of the tank body, the rotating shaft is connected to the driving mechanism through the right end cover, the driving mechanism comprises a motor, an installation plate is fixedly arranged on the right end cover, the motor is fixedly arranged on the installation plate, and the output end of the motor is connected to the rotating shaft. The spiral shaft is composed of the rotating shaft and the spiral blades fixed to the outer wall of the rotating shaft, so that the spiral blades can fully stir the material in the tank when the spiral shaft rotates, the material in the tank is uniformly distributed, the heat exchange efficiency of the material and the coolant is improved, and the crystallization process is promoted to be efficiently performed; the rotating shaft penetrates through the right end cover and is connected to the driving mechanism, so that the stable transmission of power is ensured; in the driving mechanism, the motor is fixed to the installation plate, the installation plate is stably arranged on the right end cover, the shaking of the motor during operation is avoided, and the stability of the power output is ensured; the output end of the motor is directly connected to the rotating shaft, the power transmission is efficient, the rotating speed of the spiral shaft can be accurately controlled, the stirring intensity can be flexibly adjusted according to the crystallization process requirement, the controllability of the crystallization process is greatly improved, a solid power foundation is provided for guaranteeing the crystallization quality and production efficiency, and the overall performance of the horizontal crystallizer is further optimized.

[0009] Preferably, the spiral shaft penetrates through the left end cover at one end away from the motor and is connected with a rotary joint fixed on the left end cover, the rotary joint is provided with a water inlet and a water outlet, and the rotary joint is connected with the spiral shaft. The water inlet and the water outlet of the rotary joint enable the cooling water to flow in and out of the hollow spiral shaft, thereby realizing efficient heat exchange compared with the cooling water without flowing; the cooling water flows in the spiral shaft and cooperates with the jacket coolant to greatly increase the cooling area and strengthen the cooling crystallization effect, thereby making the crystallization process more rapid and uniform and effectively improving the product quality and production efficiency.

[0010] Preferably, the scraping mechanism comprises two circular discs arranged at intervals, the two circular discs are connected through a plurality of concave-shaped rods arranged uniformly along the circumferential direction of the circular disc, and the circular disc is sleeved on the rotating shaft of the spiral shaft. When the scraping mechanism rotates with the spiral shaft, the material can be fully and uniformly stirred, the local accumulation of the material in the tank body is effectively avoided, the uniformity of the material mixing is improved, the exchange efficiency of the material and heat in the crystallization process is improved, thereby improving the consistency and quality of the crystallization; the combination of the concave-shaped rod and the circular disc can tightly adhere to the inner wall of the tank body, timely scrape off the crystalline substances attached to the wall surface, prevent the crystalline substances from accumulating and caking, ensure the cleanliness of the inside of the tank body, maintain the normal operation of the crystallizer, reduce the equipment maintenance cost and downtime caused by the attachment of the crystalline substances, and further optimize the crystallization production process.

[0011] Preferably, the bottom rod of the concave-shaped rod contacts the inner wall of the tank body, and the inner side edge of the bottom rod of the concave-shaped rod is provided with a rounded transition. The direct contact between the bottom rod and the inner wall of the tank body enables the scraping mechanism to more accurately clean the crystalline substances attached to the inner wall of the tank body during rotation, thereby avoiding the influence of the residual crystalline substances on the crystallization effect and the normal operation of the equipment; and the design of the rounded transition reduces the edges and corners of the concave-shaped rod and reduces the crystallization of the material on the concave-shaped rod.

[0012] Preferably, the transmission mechanism comprises a driving gear which is connected to the spiral shaft near one end of the right end cover, the driving gear is engaged with a driven gear, the driven gear is engaged with an inner ring gear which is fixedly arranged outside one of the circular discs, the left end cover is fixedly provided with a mounting rod, and the driven gear is rotatably arranged on the mounting rod. The driving gear is connected to the spiral shaft, can efficiently and stably receive the power of the spiral shaft, and ensures lossless power transmission. The driving gear and the driven gear are engaged with each other to accurately transmit the power, and the driven gear is engaged with the inner ring gear fixed outside the circular disc to skillfully convert the rotation of the spiral shaft into the reverse rotation of the scraping mechanism. This transmission mode not only realizes the reverse rotation of the spiral shaft and the scraping mechanism, improves the material mixing and stirring effect, prevents the crystal from adhering and accumulating, but also uses the mounting rod fixed on the left end cover to support the rotating driven gear, ensures the stability and reliability of the whole transmission process, effectively reduces the vibration and noise during equipment operation, and enhances the stability and durability of the equipment. Meanwhile, the transmission mechanism has compact structure and reasonable layout, is convenient to install and maintain, provides powerful power support for efficient operation of the horizontal crystallizer, and further optimizes the crystallization production process.

[0013] Preferably, the concave-shaped rod is arranged outside the spiral shaft, and the two circular discs are arranged at two ends in the axial direction of the spiral shaft. When the scraping mechanism rotates with the spiral shaft, the scraping mechanism can cover the two ends and the periphery of the action area of the spiral blade, cooperates with the spiral blade, greatly expands the material stirring range, improves the exchange efficiency of the material and heat in the crystallization process, and further improves the consistency of crystallization and product quality. In terms of cleaning the crystallization material, the circular disc and the concave-shaped rod can contact the inner wall of the tank in all directions, efficiently clean the crystallization material in the edge and corner area of the inner wall of the tank which is difficult to be reached by the spiral blade, timely scrape off the crystallization material adhered to the wall surface, prevent the crystallization material from accumulating and caking, ensure that the inside of the tank is always clean, effectively maintain the normal operation of the crystallizer, reduce the equipment maintenance cost and downtime caused by the adhesion of the crystallization material, lay a solid foundation for efficient and stable operation of the horizontal crystallizer, and further optimize the crystallization production process.

[0014] Preferably, the liquid outlet and the crystallization outlet are arranged at the lower part of the right side of the tank, the bottom surface of the tank is provided with four supporting legs, and the bottom surface of the supporting leg at the left part of the bottom surface of the tank is fixedly connected with a lifting mechanism. The lower position meets the principle of gravity, so that the liquid and the crystal after crystallization can flow out naturally by relying on the gravity, without the need of additional pumping or complex drainage device, effectively improves the discharging efficiency, and reduces energy consumption and equipment cost; the left part of the tank can be lifted by using the lifting mechanism, so that the crystallization material and the liquid in the tank are conveniently discharged; during use, the liquid outlet and the crystallization outlet are both provided with valves.

[0015] Preferably, the lifting mechanism is a lifting supporting leg.

[0016] The horizontal crystallizer has the following beneficial effects:

[0017] The advantages of this invention include: the spiral shaft and the scraping mechanism rotate in opposite directions and are connected by a transmission mechanism, which greatly improves the mixing and stirring effect of the material, prevents crystals from adhering and accumulating on the inner wall of the tank, makes the crystallization more uniform, improves product quality, and effectively reduces the frequency of equipment cleaning and maintenance, making cleaning convenient; the combination of the tank body and the jacket, and the setting of the refrigerant inlet and outlet, enable the jacket to efficiently remove heat, accurately control the crystallization temperature, and ensure the stability of the crystallization process; the reasonable layout of the feed inlet, liquid outlet, and crystal discharge outlet facilitates the entry and exit of materials and improves the continuity of production; the hollow spiral shaft is connected by a rotary joint, which not only ensures the stable rotation of the spiral shaft, but also allows the internal cooling water to be introduced, ensuring the cooling effect and improving the cooling crystallization efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a partial structural cross-sectional view of the present invention;

[0020] Figure 3 This is a schematic cross-sectional view of the longitudinal section of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of the spiral shaft, rotary joint, motor, annular disk, U-shaped rod, driving gear, driven gear, internal gear ring and bushing of this utility model;

[0022] Figure 5 This is a schematic diagram of the scraping mechanism and internal gear ring of this utility model.

[0023] In the diagram: 1. Tank body; 2. Jacket; 3. Spiral shaft; 4. Rotary joint; 5. Right end cover; 6. Motor; 7. Left end cover; 8. Circular disc; 9. U-shaped rod; 10. Drive gear; 11. Driven gear; 12. Internal gear ring; 13. Mounting rod; 14. Lifting support leg; 15. Bushing;

[0024] 101. Feed inlet; 102. Liquid outlet; 103. Crystallization outlet; 104. Support leg; 201. Refrigerant inlet; 202. Refrigerant outlet; 401. Water inlet; 402. Water outlet; 501. Mounting plate. Detailed Implementation

[0025] The present invention will now be described and explained in detail with reference to the accompanying drawings.

[0026] Example 1

[0027] like Figures 1-3As shown, the horizontal crystallizer comprises a cylindrical tank body 1, the tank body 1 is sleeved with a jacket 2, the lower part of the jacket 2 is connected with a coolant inlet 201, the upper part of the jacket 2 is connected with a coolant outlet 202, the upper part of the tank body 1 is provided with a feeding port 101, the lower part of the tank body 1 is provided with a liquid outlet 102 and a crystallization discharge port 103, a hollow spiral shaft 3 is rotatably arranged in the middle part of the tank body 1, the spiral shaft 3 is connected with a rotary joint 4, the rotary joint 4 is arranged outside the tank body 1, the end of the spiral shaft 3 away from the rotary joint 4 penetrates through the tank body 1 and is connected with a driving mechanism, a scraping mechanism rotating in the opposite direction of the spiral shaft 3 is arranged on the inner wall of the tank body 1 in a matched mode, and the scraping mechanism and the spiral shaft 3 are connected through a transmission mechanism.

[0028] The spiral shaft 3 and the scraping mechanism rotate in the opposite directions and are connected through the transmission mechanism, so that the mixing and stirring effect of the material is greatly improved, the crystal is prevented from adhering and accumulating on the inner wall of the tank body 1, the crystallization is more uniform, the product quality is improved, the cleaning and maintenance frequency of the equipment is effectively reduced, and the cleaning is convenient; the tank body 1 is combined with the jacket 2, the coolant inlet 201 and the coolant outlet 202 are arranged, so that the jacket 2 can efficiently take away heat, the crystallization temperature is accurately controlled, and the crystallization process is stable; the feeding port 101, the liquid outlet 102 and the crystallization discharge port 103 are reasonably arranged, the material is convenient to enter and exit, and the production continuity is improved; the hollow spiral shaft 3 is connected through the rotary joint 4, so that the spiral shaft 3 can stably rotate and the internal cooling water can be introduced, and the cooling and crystallization effect is improved.

[0029] The liquid outlet 102 and the crystallization discharge port 103 are arranged at the lower part of the right side of the tank body 1, four supporting legs 104 are arranged on the bottom surface of the tank body 1, and the bottom surface of the supporting leg 104 on the left part of the bottom surface of the tank body 1 is fixedly connected with a lifting mechanism. The lifting mechanism is a lifting leg 14, which is a prior art and will not be described here; the left part of the tank body 1 can be lifted by the lifting leg 14, so that the crystallization material and liquid in the tank body 1 are conveniently discharged; the lower position meets the principle of gravity, so that the liquid and the crystal after crystallization can flow out naturally by relying on the gravity, without the need for additional pumping or complex drainage devices, the discharging efficiency is effectively improved, and the energy consumption and equipment cost are reduced; during use, the liquid outlet and the crystallization discharge port are both provided with valves.

[0030] As shown in the drawings, Figure 3 and Figure 4As shown, the spiral shaft 3 comprises a rotating shaft and spiral blades fixed on the outer wall of the rotating shaft, the rotating shaft is rotatably arranged on the left end cover 7 and the right end cover 5 at both ends of the tank body 1, the rotating shaft penetrates through the right end cover 5 and is connected with a driving mechanism, the driving mechanism comprises a motor 6, the right end cover 5 is fixedly provided with a mounting plate 501, the motor 6 is fixedly arranged on the mounting plate 501, and the output end of the motor 6 is connected with the rotating shaft. The end of the spiral shaft 3 away from the motor 6 penetrates through the left end cover 7 and is connected with a rotary joint 4, the rotary joint 4 is fixedly arranged on the outer wall of the left end cover 7, the rotary joint 4 is provided with a water inlet 401 and a water outlet 402, and the rotary joint 4 is connected with the spiral shaft 3.

[0031] When the horizontal crystallizer is in operation, the motor 6 is fixed on the mounting plate 501, the mounting plate 501 is fixed on the right end cover 5, the motor 6 is started, the output end of the motor 6 drives the rotating shaft of the spiral shaft 3 rotatably connected with the right end cover 5, and then the spiral blades fixed on the outer wall of the rotating shaft rotate to push the materials in the tank body 1 to move. The rotary joint 4 connected with the end of the spiral shaft 3 away from the motor 6 is fixed on the left end cover 7, and the water inlet 401 and the water outlet 402 are arranged to facilitate the cooling water to enter and exit the spiral shaft 3, thereby assisting the crystallization process; the stable driving mechanism ensures the continuous and stable rotation of the spiral shaft 3, and ensures the uniform stirring of the materials; the rotary joint 4 facilitates the circulation of the cooling medium, thereby strengthening the cooling and crystallization effect.

[0032] As shown in Figure 4 and Figure 5 , the scraping mechanism comprises two circular ring plates 8 arranged at intervals, the two circular ring plates 8 are connected through three concave-shaped rods 9, the three concave-shaped rods 9 are uniformly arranged along the circumferential direction of the circular ring plate 8, and the circular ring plate 8 is sleeved on the rotating shaft of the spiral shaft 3. The bottom rod of the concave-shaped rod 9 contacts the inner wall of the tank body 1, and the inner side edge of the bottom rod of the concave-shaped rod 9 is provided with a rounded transition. The concave-shaped rod 9 is arranged on the outer side of the spiral shaft 3, and the two circular ring plates 8 are arranged at two ends in the axial direction of the spiral shaft 3. The transmission mechanism comprises a driving gear 10, the driving gear 10 is key-connected on one end of the spiral shaft 3 close to the right end cover 5, the driving gear 10 is engaged with a driven gear 11, the driven gear 11 is engaged with an inner ring gear 12, the inner ring gear 12 is fixedly arranged on the outer side of one of the circular ring plates 8, an installation rod 13 is fixedly arranged on the left end cover 7, and the driven gear 11 is rotatably arranged on the installation rod 13. An axle sleeve 15 is sleeved on one end of the rotating shaft of the spiral shaft 3 close to the motor 6, the axle sleeve 15 is arranged in the tank body 1, one end of the axle sleeve 15 abuts against the right end cover 5, and the other end abuts against one of the fixed rings 8 of the scraping mechanism, so as to limit the movement of the scraping mechanism in the axial direction.

[0033] When the scraping mechanism rotates with the screw shaft 3, it can fully and uniformly stir the material, effectively avoid the accumulation of the material near the inner wall of the tank 1, improve the uniformity of the material mixing, enhance the exchange efficiency of the material and heat in the crystallization process, thereby improving the consistency and quality of the crystallization; the combination of the concave-shaped rod 9 and the circular ring disc 8 can closely adhere to the inner wall of the tank 1 and timely scrape off the crystalline substances attached to the wall surface, prevent the crystalline substances from accumulating and caking, ensure the cleanliness of the inside of the tank 1, maintain the normal operation of the crystallizer, reduce the equipment maintenance cost and downtime caused by the attachment of the crystalline substances; the scraping mechanism has a simple and stable structure, is easy to install and disassemble, and is convenient for maintenance and replacement of parts, which helps to improve the maintainability of the equipment, provides a solid guarantee for the efficient and stable operation of the horizontal crystallizer, and further optimizes the crystallization production process.

[0034] In the above arrangement, the driving gear 10 is key-connected to the screw shaft 3, which can efficiently and stably receive the power of the screw shaft 3 and ensure that the power transmission is lossless; the driving gear 10 and the driven gear 11 are meshed with each other to accurately transmit the power, and then the driven gear 11 is meshed with the inner ring gear 12 fixed on the outer side of the circular ring disc 8, which ingeniously converts the rotation of the screw shaft 3 into the reverse rotation of the scraping mechanism; this transmission mode not only realizes the reverse rotation of the screw shaft 3 and the scraping mechanism, improves the material mixing and stirring effect, and prevents the attachment and accumulation of the crystals, but also uses the mounting rod 13 fixed on the left end cover 7 to support the rotating driven gear 11, ensures the stability and reliability of the entire transmission process, effectively reduces the vibration and noise during the operation of the equipment, and enhances the stability and durability of the equipment; the direct contact of the bottom rod of the concave-shaped rod 9 with the inner wall of the tank 1 enables the scraping mechanism to more accurately clean the crystalline substances attached to the inner wall of the tank 1 during rotation, avoiding the influence of crystalline substance residues on the crystallization effect and the normal operation of the equipment; the design of the rounded transition reduces the edges of the concave-shaped rod 9 and the crystallization of the material on the concave-shaped rod 9; when the scraping mechanism rotates with the screw shaft 3, it can cover the two ends and the periphery of the screw blade action area and work cooperatively with the screw blade, greatly expanding the material stirring range, improving the exchange efficiency of the material and heat in the crystallization process, and thereby improving the consistency of the crystallization and the product quality; in terms of crystalline substance cleaning, the circular ring disc 8 and the concave-shaped rod 9 can contact the inner wall of the tank 1 in all directions, efficiently clean the crystalline substances in the edge and corner areas of the inner wall of the tank 1 that are difficult to reach by the screw blade, timely scrape off the crystalline substances attached to the wall surface, prevent the crystalline substances from accumulating and caking, ensure that the inside of the tank 1 always remains clean, and effectively maintain the normal operation of the crystallizer, reduce the equipment maintenance cost and downtime caused by the attachment of the crystalline substances, lay a solid foundation for the efficient and stable operation of the horizontal crystallizer, and further optimize the crystallization production process.

[0035] In other alternative embodiments, the driving mechanism is a hydraulic motor.

Claims

1. A horizontal crystallizer, comprising a cylindrical tank (1), an outer jacket (2) is provided on the tank (1), a coolant inlet (201) is connected to the lower part of the jacket (2), a coolant outlet (202) is connected to the upper part of the jacket (2), a feed inlet (101) is provided on the upper part of the tank (1), a liquid outlet (102) and a crystallization outlet (103) are provided on the lower part of the tank (1), characterized in that, The hollow spiral shaft (3) is rotationally arranged in the middle of the tank body (1), the spiral shaft (3) is communicated with the rotary joint (4), the rotary joint (4) is arranged outside the tank body (1), and the end, away from the rotary joint (4), of the spiral shaft (3) penetrates through the tank body (1) and is connected with the driving mechanism, the scraping mechanism, which rotates in the opposite direction of the spiral shaft (3), is arranged on the inner wall of the tank body (1) in a matched mode, and the scraping mechanism and the spiral shaft (3) are connected through the transmission mechanism.

2. The horizontal crystallizer according to claim 1, characterized in that The spiral shaft (3) comprises a rotating shaft and spiral blades fixedly arranged on the outer wall of the rotating shaft, the rotating shaft is rotationally arranged on the left end cover (7) and the right end cover (5) at two ends of the tank body (1), the rotating shaft penetrates through the right end cover (5) and is connected with the driving mechanism, the driving mechanism comprises a motor (6), the mounting plate (501) is fixedly arranged on the right end cover (5), the motor (6) is fixedly arranged on the mounting plate (501), and the output end of the motor (6) is connected with the rotating shaft.

3. The horizontal crystallizer according to claim 2, characterized in that The end, away from the motor (6), of the spiral shaft (3) penetrates through the left end cover (7) and is connected with the rotary joint (4), the rotary joint (4) is fixedly arranged on the left end cover (7), the rotary joint (4) is provided with the water inlet (401) and the water outlet (402), and the rotary joint (4) is connected with the spiral shaft (3).

4. The horizontal crystallizer according to claim 3, characterized in that The scraping mechanism comprises two circular disks (8) arranged at intervals, the two circular disks (8) are connected through a plurality of concave-shaped rods (9), the plurality of concave-shaped rods (9) are evenly arranged along the circumferential direction of the circular disk (8), and the circular disk (8) is sleeved on the rotating shaft of the spiral shaft (3).

5. The horizontal crystallizer according to claim 4, characterized in that The bottom rod of the concave-shaped rod (9) contacts the inner wall of the tank body (1), and the inner side edge of the bottom rod of the concave-shaped rod (9) is provided with a rounded transition.

6. The horizontal crystallizer according to claim 5, characterized in that The transmission mechanism comprises a driving gear (10), the driving gear (10) is connected with the spiral shaft (3) at one end close to the right end cover (5) through a key, the driving gear (10) is meshed with a driven gear (11), the driven gear (11) is meshed with an inner gear ring (12), the inner gear ring (12) is fixedly arranged on the outer side of one of the circular disks (8), the mounting rod (13) is fixedly arranged on the left end cover (7), and the driven gear (11) is rotationally arranged on the mounting rod (13).

7. The horizontal crystallizer according to claim 6, characterized in that The concave-shaped rod (9) is arranged outside the spiral shaft (3), and the two circular disks (8) are arranged at two ends in the axial direction of the spiral shaft (3).

8. The horizontal crystallizer according to claim 1, characterized in that The liquid outlet (102) and the crystallization discharge port (103) are arranged at the lower part of the right side of the tank body (1), and the bottom surface of the tank body (1) is provided with four supporting legs (104).

9. The horizontal crystallizer according to claim 8, characterized in that The bottom surface of the supporting leg (104) on the left part of the bottom surface of the tank body (1) is fixedly connected with the lifting mechanism.

10. The horizontal crystallizer according to claim 9, characterized in that The lifting mechanism is a lifting supporting leg (14).

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