Cooling mechanism of thickener

Abstract

The cooling mechanism comprises an outer shell and a scraping plate, a top cover is sealed at the top of the outer shell, a guide cylinder is connected to the center of the bottom of the top cover, a stirring rod is arranged in the outer shell, one end of the stirring rod penetrates through the guide cylinder and then is rotatably connected with the top cover through a bearing, an inner shell is connected in the outer shell, and a jacket is formed between the inner shell and the outer shell. The top of the outer shell is connected with the water outlet pipe, the bottom of the outer shell is connected with the water inlet pipe, the jacket is additionally arranged in the thickener, circulating cooling water is introduced into the jacket to conduct heat exchange and cooling on materials, the cooling water directly makes contact with the outer wall of the inner shell, and compared with a traditional coil pipe type cooling mechanism, intermediate media and paths for heat transfer are reduced; the heat exchange efficiency is greatly improved, the temperature of materials in the thickener can be rapidly reduced, the solubility of sodium chloride in the materials is reduced through cooling, meanwhile, the solubility of sodium sulfate is increased, and therefore the effect of improving the salt quality and the yield of a sodium chloride product is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of thickener technology, specifically relating to a cooling mechanism for a thickener. Background Technology

[0002] A thickener, also known as a thickener or enricher, is required in the evaporation system of sodium chloride and sodium sulfate ternary water salts. The thickener's original function is to make the material into fine and uniform particles through stirring, and then discharge it into a centrifuge to centrifuge and produce high-quality salt products.

[0003] In existing thickeners, as materials are processed within the thickener, temperatures often rise due to factors such as heat from chemical reactions, heat from mechanical stirring, and the inherent properties of the materials themselves. This can affect the quality and purity of the sodium chloride product. Therefore, a coil-type cooling mechanism is needed for cooling. The water pump in the coil-type cooling mechanism pumps cooling water from the cooling tank into a serpentine tube. The serpentine tube contacts the inner wall of the thickener, and heat exchange occurs through the cooling water inside, removing heat from the airflow mill. However, since the heat exchange between the cooling water and the thickener occurs through contact with the tube wall, heat transfer requires passing through multiple media, including the inner wall of the thickener and the wall of the serpentine tube. Compared to direct contact cooling methods, the heat transfer path is longer, making it impossible to quickly reduce the temperature inside the thickener, thus leading to a decrease in the quality and purity of the sodium chloride product. Utility Model Content

[0004] The purpose of this invention is to provide a cooling mechanism for a thickener to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a cooling mechanism for a thickener, comprising:

[0006] The outer shell has a top cover sealed at the top, and a guide tube connected to the center of the bottom of the top cover. Inside the outer shell is a stirring rod for stirring materials. One end of the stirring rod passes through the guide tube and is rotatably connected to the top cover via a bearing. Inside the outer shell is an inner shell, and a jacket for filling cooling water is formed between the inner shell and the outer shell. A water outlet pipe is connected to the top of the outer shell, and a water inlet pipe is connected to the bottom of the outer shell. Cooling water is injected into the jacket through the water inlet pipe so that the circulated cooling water is discharged through the water outlet pipe.

[0007] The scraper has two sets, which are respectively located on both sides of the stirring rod, and is used to scrape off the material on the inner wall of the inner shell.

[0008] Preferably, both sides of the stirring rod are connected with two groups of stirring blades, the surface of the scraper is connected with two groups of inserting rods, the other end of the inserting rod is slid through the stirring blade, the surface of the rod body in the stirring blade is connected with a spring, and the other end of the spring is connected with the stirring blade.

[0009] Preferably, a sealing ring is arranged at the connecting position of the inserting rod and the stirring blade.

[0010] Preferably, a speed reducer motor is arranged at the top of the top cover, and the output shaft of the speed reducer motor is rotatably connected with the stirring rod.

[0011] Preferably, a feeding pipe is arranged on the surface of the flow guide cylinder, and the other end of the feeding pipe is connected with the top cover, and an overflow pipe is arranged on the surface of the inner shell, and one end of the overflow pipe is connected with the outer shell.

[0012] Preferably, a vent pipe is arranged at the center of the bottom of the outer shell, and a flushing opening is arranged on the surface of the vent pipe, and a discharging pipe is arranged on the surface of the inner shell, and the other end of the discharging pipe is connected with the outer shell.

[0013] Preferably, a thermometer opening is arranged on the surface of the outer shell, and the thermometer opening extends into the jacket, and ear supports are arranged on both sides of the outer shell.

[0014] Compared with the prior art, the utility model has the advantages that:

[0015] (1) A jacket is arranged in the thick device, circulating cooling water is introduced into the jacket, heat exchange and cooling of the material are realized, the cooling water directly contacts the outer wall of the inner shell, compared with the traditional coil type cooling mechanism, the intermediate medium and path of heat transfer are reduced, the heat exchange efficiency is greatly improved, the temperature of the material in the thick device can be rapidly reduced, the solubility of sodium chloride in the material is reduced, and the solubility of sodium sulfate is increased, so that the salt quality and yield of sodium chloride product are improved.

[0016] (2) The scraper arranged on both sides of the stirring rod can scrape the material on the inner wall of the inner shell along with the rotation of the stirring rod, so that the material is prevented from adhering and accumulating on the inner wall of the inner shell, the uniform mixing of the material is ensured, the heat transfer effect is improved, and the material adhered to the inner wall of the inner shell is prevented from forming a heat insulation layer to affect the cooling. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is a structural schematic view of the utility model;

[0018] Fig. 2 It is a structural schematic view of the utility model when the inserting rod is connected with the stirring blade.

[0019] In the figure: 1, the shell; 2, top cover; 3, flow guide cylinder; 4, stirring rod; 5, inner shell; 6, jacket; 7, water outlet pipe; 8, water inlet pipe; 9, scraper; 10, speed reducer motor; 11, feed pipe; 12, stirring blade; 13, insertion rod; 14, spring; 15, sealing ring; 16, overflow pipe; 17, vent pipe; 18, flushing port; 19, discharge pipe; 20, thermometer port; 21, ear support. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0021] The utility model provides a kind of cooling mechanism of thickener as Figs. 1-2 As shown in the figure, including:

[0022] Shell 1, the top of the shell 1 is sealed with top cover 2, the bottom center of the top cover 2 is connected with flow guide cylinder 3, the shell 1 is equipped with stirring rod 4 for stirring material in it, one end of the stirring rod 4 is connected with top cover 2 through bearing rotation after penetrating flow guide cylinder 3, the shell 1 is connected with inner shell 5 and the inner shell 5 is connected with the shell 1, and the jacket 6 for filling cooling water is formed between the shell 1, the top of the shell 1 is connected with water outlet pipe 7, and the bottom is connected with water inlet pipe 8, cooling water is injected into the jacket 6 through the water inlet pipe 8, so that the cooling water after circulation is discharged through the water outlet pipe 7.

[0023] Scraper 9, the scraper 9 is equipped with two groups and is respectively arranged on both sides of stirring rod 4, for scraping the material on the inner wall of inner shell 5.

[0024] The two groups of stirring blades 12 are connected on both sides of the stirring rod 4, the two groups of insertion rods 13 are connected on the surface of the scraper 9, and the other end of the insertion rod 13 is slidably penetrated through the stirring blade 12, the rod body surface of the insertion rod 13 in the stirring blade 12 is connected with spring 14, and the other end of the spring 14 is connected with the stirring blade 12.

[0025] The connecting part of the insertion rod 13 and the stirring blade 12 is provided with sealing ring 15, the sealing ring 15 can seal the connecting part of the insertion rod 13 and the stirring blade 12 to prevent the material from entering.

[0026] The top cover 2 is provided with speed reducer motor 10, and the output shaft of the speed reducer motor 10 is rotatably penetrated through the top cover 2 and connected with the stirring rod 4.

[0027] The flow guide cylinder 3 surface is connected with the feed pipe 11 and the other end of the feed pipe 11 penetrates the top cover 2, the inner shell 5 surface is connected with the overflow pipe 16 and one end of the overflow pipe 16 penetrates the outer shell 1, during the operation of the thickener, as the material continuously enters, the liquid level in the inner shell 5 gradually rises, when the liquid level reaches the inlet height of the overflow pipe 16, the material begins to flow into the overflow pipe 16 for discharge, avoiding the liquid level being too high.

[0028] The bottom center of the outer shell 1 is connected with the vent pipe 17 and the surface of the vent pipe 17 is provided with the flushing port 18, when the equipment needs to be cleaned, the material can be discharged through the vent pipe 17, the inside of the equipment is washed through the flushing port 18, the surface of the inner shell 5 is connected with the discharge pipe 19 and the other end of the discharge pipe 19 penetrates the outer shell 1, the discharge pipe 19 can be used to discharge the product.

[0029] The surface of the outer shell 1 is connected with the thermometer port 20 and the thermometer port 20 extends into the jacket 6, the thermometer can be placed in the thermometer port 20, the temperature of the cooling water in the jacket 6 is monitored in real time through the thermometer in the thermometer port 20, the both sides of the outer shell 1 are connected with the ear support 21, the ear support 21 can provide a stable support point for the thickener, the weight of the thickener is evenly transmitted to the ground and the steel structure platform, ensuring the stability of the thickener during the operation.

[0030] The cooling mechanism of the thickener, the material passes through the feed pipe 11 and is guided into the inside of the thickener under the action of the flow guide cylinder 3, the speed reducing motor 10 is started, the speed reducing motor 10 drives the stirring rod 4 to rotate, when the stirring rod 4 rotates, the stirring blades 12 on both sides of the stirring rod 4 stir the material, the material is fully mixed in the thickener, at the same time, in the stirring process, the scraper 9 is always close to the inner wall of the inner shell 5 under the action of the spring 14 and the inserting rod 13, the material adhered to the inner wall of the inner shell 5 is scraped off with the rotation of the stirring rod 4;

[0031] The water pump arranged outside pumps the cooling water of the cooling box into the water inlet pipe 8 and into the jacket 6 between the outer shell 1 and the inner shell 5 through the water inlet pipe 8, since the jacket 6 is in direct contact with the inner shell 5, the cooling water can quickly absorb the heat transferred by the inner shell 5, realizing the cooling of the material, the temperature of the cooling water after absorbing the heat rises, after circulating in the jacket 6, the cooling water is discharged to the cooling box through the water outlet pipe 7 and is refrigerated, thereby realizing the circulating cooling of the thickener, during the whole working process, the temperature of the cooling water in the jacket 6 is monitored in real time through the thermometer port 20, the operator can adjust the flow or temperature of the cooling water according to the temperature to achieve the purpose of accurately controlling the temperature of the material, when the material processing is completed, the product is discharged through the discharge pipe 19, when the equipment needs to be cleaned, the material can be discharged through the vent pipe 17, the inside of the equipment is washed through the flushing port 18;

[0032] In the ternary water salt evaporation system of sodium chloride, sodium sulfate, in order to obtain high-purity sodium chloride product salt, the concentration of sodium sulfate needs to be controlled, and the discharge is carried out before the saturation of sodium sulfate, so that only sodium chloride exists in the product salt, and the discharge temperature is generally controlled at 75 DEG C, at this time, the composition of the sodium chloride and sodium sulfate co-saturated solution is that the mass percentage of sodium chloride is 25.5%, the mass percentage of sodium sulfate is 4.55%, and the mass percentage of water is 70.4%, and in the actual operation process, due to the water quality fluctuation, or the temperature control is not accurate, the discharge is not timely, and the like, part of the sodium sulfate is precipitated, and the quality of sodium chloride is affected,

[0033] And through the function of circulating water cooling and cooling of the thickener, the material discharged at 75 DEG C is cooled to 50 DEG C by circulating water, and then discharged into the centrifuge arranged outside, when the material is at 50 DEG C, the composition of the sodium chloride and sodium sulfate co-saturated solution is that the mass percentage of sodium chloride is 24.2%, the mass percentage of sodium sulfate is 5.3%, and the mass percentage of water is 70.5%;

[0034] It can be known by comparison that the mass percentage of sodium chloride in the sodium chloride and sodium sulfate co-saturated solution at 50 DEG C is reduced from 25.5% to 24.2%, which indicates that the solubility of sodium chloride is reduced, and more sodium chloride is precipitated from the solution, so that the yield of sodium chloride is improved;

[0035] And the mass percentage of sodium sulfate is increased from 4.55% to 5.3%, which indicates that the solubility of sodium sulfate is increased, and more sodium sulfate is dissolved in the solution, so that the content of sodium sulfate in the product salt is reduced, and the quality of the sodium chloride product salt is improved.

[0036] Finally, it should be explained that: the above only describes the preferred embodiments of the utility model, and is not used to limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical scheme recorded in the foregoing embodiments can be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A cooling mechanism for a thickener, characterized in that, include: The outer shell (1) is sealed with a top cover (2) at the top. A guide tube (3) is connected to the center of the bottom of the top cover (2). A stirring rod (4) for stirring materials is provided inside the outer shell (1). One end of the stirring rod (4) passes through the guide tube (3) and is rotatably connected to the top cover (2) through a bearing. An inner shell (5) is connected inside the outer shell (1), and a jacket (6) for filling cooling water is formed between the inner shell (5) and the outer shell (1). A water outlet pipe (7) is connected to the top of the outer shell (1), and a water inlet pipe (8) is connected to the bottom. Cooling water is injected into the jacket (6) through the water inlet pipe (8) so that the circulated cooling water is discharged through the water outlet pipe (7). The scraper (9) is provided in two sets and is respectively located on both sides of the stirring rod (4) for scraping off the material on the inner wall of the inner shell (5).

2. The cooling mechanism for a thickener according to claim 1, characterized in that: Two sets of stirring blades (12) are connected to both sides of the stirring rod (4). Two sets of insert rods (13) are connected to the surface of the scraper (9), and the other end of the insert rod (13) slides through the stirring blade (12). The insert rod (13) is located inside the stirring blade (12) and the surface of the rod is connected to a spring (14). The other end of the spring (14) is connected to the stirring blade (12).

3. The cooling mechanism for a thickener according to claim 2, characterized in that: A sealing ring (15) is provided at the connection between the insertion rod (13) and the stirring blade (12).

4. The cooling mechanism for a thickener according to claim 1, characterized in that: The top cover (2) is equipped with a reduction motor (10), and the output shaft of the reduction motor (10) rotates through the top cover (2) and connects to the stirring rod (4).

5. The cooling mechanism for a thickener according to claim 1, characterized in that: The surface of the guide tube (3) is connected to the feed pipe (11) and the other end of the feed pipe (11) passes through the top cover (2). The surface of the inner shell (5) is connected to the overflow pipe (16) and one end of the overflow pipe (16) passes through the outer shell (1).

6. The cooling mechanism for a thickener according to claim 1, characterized in that: The outer shell (1) is connected to the bottom center of a vent pipe (17) and the surface of the vent pipe (17) is provided with a rinsing port (18). The inner shell (5) is connected to a discharge pipe (19) and the other end of the discharge pipe (19) penetrates the outer shell (1).

7. The cooling mechanism for a thickener according to claim 1, characterized in that: The outer shell (1) has a thermometer port (20) connected to its surface and the thermometer port (20) extends into the jacket (6). The outer shell (1) has ear-type supports (21) connected to both sides.

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