thickeners

Abstract

The utility model relates to a thickener, including the cylinder, the upper portion is round crystallization area in the cylinder, the round crystallization area sets up overflow port, round crystallization area upper end sets up feed inlet, the lower part of cylinder is salt bucket, the salt bucket bottom is connected and arranges salt pipe, sets up the salt valve on the salt pipe, water cooling jacket is set up in the round crystallization area outside of cylinder, scraper system is set up on the cylinder, the scraper system is suitable for scraping the crystalline salt on the inner wall of round crystallization area cylinder, the distance between the scraper system scraper and cylinder wall is 1~3mm, and the rotating speed is generally 5-10r / min. The thickener of the utility model has water cooling jacket, has the cooling crystallization function, cooperates the scraper system, can dissolve in the salt of evaporation mother liquor in large amount and separate to the cylinder wall, under the action of scraper system, scrape to the salt bucket, greatly improve the salt output of evaporation mother liquor.

Description

Technical Field

[0001] This utility model relates to the field of energy-saving and environmental protection equipment, specifically to a thickener. Background Technology

[0002] When using evaporation to treat wastewater, there is often a requirement to crystallize salt from the mother liquor. Usually, a thickener is used to enrich the mother liquor with crystallized salt. When the required concentration is reached, the mother liquor with a higher solids content at the bottom of the thickener is discharged into a centrifuge for dehydration and salt removal.

[0003] Currently available thickeners do not have an automatic salt discharge function for cooling and crystallization, resulting in a low salt yield. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and provide a thickener to solve the technical problem of low salt output rate of the current thickener.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] Provide a thickener, including

[0007] The cylinder has a circular crystallization zone in the upper part, an overflow port in the circular crystallization zone, a feed port at the upper end of the circular crystallization zone, and a salt hopper in the lower part of the cylinder. A salt discharge pipe is connected to the bottom of the salt hopper, and a salt discharge valve is installed on the salt discharge pipe.

[0008] A water-cooled jacket is installed outside the circular crystallization zone of the cylinder;

[0009] A scraper system is installed on the cylinder. The scraper system is suitable for scraping the crystallized salt off the inner wall of the circular crystallization zone. The distance between the scraper and the cylinder wall is 1-3 mm, and the rotation speed is generally 5-10 r / min.

[0010] Furthermore, the scraper system includes

[0011] A geared motor is installed at the upper end of the cylinder, and the geared motor is connected to a main shaft, which is vertically inserted into the cylinder.

[0012] A tool holder, one side of which is connected to the main shaft via multiple connecting rods, and a scraper assembly is mounted on one side of the tool holder;

[0013] A scraper assembly, wherein the scraper assembly is elastically set on the blade holder.

[0014] Furthermore, the scraper assembly includes a scraper, multiple guide rods, and a spring;

[0015] The guide rod is fixed to the scraper. After passing through the blade holder, the guide rod is connected to the locking nut. The spring is sleeved on the guide rod, with one side of the spring abutting against the blade holder and the other side abutting against the scraper.

[0016] Furthermore, a sludge removal valve is installed on the salt discharge pipe, the sludge removal valve is located downstream of the salt discharge valve, and a high-pressure water inlet is opened on the salt discharge pipe between the salt discharge valve and the sludge removal valve.

[0017] Furthermore, the cylinder is placed on the frame, and multiple weighing modules are arranged between the cylinder and the frame. The weighing modules and the salt discharge valve are connected to the controller.

[0018] The beneficial effects of this utility model are:

[0019] The thickener of this invention is equipped with a water-cooled jacket, which has a cooling and crystallization function. When used with a scraper system, it can precipitate a large amount of salt dissolved in the mother liquor to the cylinder wall. Under the action of the scraper system, the salt is scraped off into the salt hopper, which greatly increases the salt output of the mother liquor.

[0020] Secondly, in conjunction with the weighing module and controller, the automatic valve is automatically activated to discharge salt when the thickener reaches the specified weight, thus enabling the thickener to have an automatic weighing and salt discharge function.

[0021] The scraper is connected to the blade holder via a spring. Since the hardness of salt crystals varies, the scraper can automatically adjust its distance from the cylinder wall via the spring, continuously scraping and grinding the crystallized salt adhering to the cylinder wall, so that all the salt is scraped off, while also preventing it from being stuck by salt and scale.

[0022] When the bottom of the thickener and the brine discharge pipe are blocked, close the sludge removal valve, open the brine discharge valve, and open the high-pressure water inlet valve to flush and unclog the pipes. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings.

[0024] Figure 1 This is a schematic diagram of a thickener;

[0025] Figure 2 This is a schematic diagram of the scraper assembly;

[0026] Figure 3 This is a schematic diagram of the thickener mounted on the frame;

[0027] Among them, 1. cylinder, 11. feed inlet, 12. overflow outlet, 13. salt hopper, 14. slag discharge outlet;

[0028] 2. Water-cooled jacket;

[0029] 3. Scraper system; 31. Gear motor; 32. Main shaft; 33. Connecting rod; 34. Tool holder;

[0030] 4. Scraper assembly, 41. Scraper, 42. Guide rod, 43. Spring.

[0031] 5. Brine drain pipe; 51. Brine drain valve; 52. Sludge removal valve; 53. High-pressure water inlet;

[0032] 6. Frame; 61. Weighing module. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0034] This application provides a thickener, which will be described in detail below. It should be noted that the order of description of the following embodiments is not intended to limit the preferred order of the embodiments of this application. Furthermore, the descriptions of each embodiment have their own emphasis; parts not described in detail in a certain embodiment can be referred to in the relevant descriptions of other embodiments.

[0035] To address the technical problem of low salt extraction rate in existing thickeners, one embodiment of this application provides a thickener. This is described in detail below.

[0036] like Figures 1 to 3 As shown, a thickener includes

[0037] The cylinder 1 has a circular crystallization zone in the upper part, an overflow port 12 in the circular crystallization zone, a feed port 11 at the upper end of the circular crystallization zone, and a salt hopper 13 in the lower part of the cylinder 1. The bottom of the salt hopper 13 is connected to a salt discharge pipe 5, and a salt discharge valve 51 is provided on the salt discharge pipe 5.

[0038] The water-cooled jacket 2 is located outside the circular crystallization zone of the cylinder 1. The water-cooled jacket 2 has an inlet and an outlet. The circular crystallization zone is cooled by circulating cooling water. The water cooling temperature is determined by the worker based on the actual material.

[0039] The scraper system 3 is installed on the cylinder 1. The scraper system 3 is suitable for scraping the crystallized salt on the inner wall of the circular crystallization zone cylinder. The distance between the scraper 41 of the scraper system 3 and the cylinder wall is 1 to 3 mm, and the rotation speed is generally 5 to 10 r / min.

[0040] Specifically, as an optional implementation method in this embodiment, such as Figure 1 and Figure 2As shown, the scraper system 3 includes

[0041] A reduction motor 31 is installed at the upper end of the cylinder 1. The reduction motor 31 is connected to a main shaft 32, which is vertically inserted into the cylinder 1.

[0042] A tool holder 34 is connected to a main shaft 32 on one side via multiple connecting rods 33, and a scraper assembly 4 is installed on one side of the tool holder 34.

[0043] Scraper assembly 4, which is elastically set on the blade holder 34.

[0044] The geared motor 31 drives the main shaft 32 to rotate, which in turn drives the tool holder 34 to rotate inside the cylinder 1. Finally, the tool holder 34 drives the scraper assembly 4 to scrape the material from the inner wall of the cylinder.

[0045] Specifically, as an optional implementation method in this embodiment, such as Figure 2 As shown, the scraper assembly 4 includes a scraper 41, a plurality of guide rods 42, and a spring 43;

[0046] The guide rod 42 is fixed on the scraper 41. The guide rod 42 passes through the blade holder 34 and is connected to the locking nut. The spring 43 is sleeved on the guide rod 42. One side of the spring 43 abuts against the blade holder 34 and the other side abuts against the scraper 41.

[0047] The scraper 41 is connected to the blade holder via a spring 43. Since the hardness of salt crystals varies, the scraper 41 can automatically adjust its distance from the cylinder wall via the spring 43 to continuously scrape the crystallized salt adhering to the cylinder wall, so that all the salt is scraped off. At the same time, it can also avoid the phenomenon of being stuck by salt and scale.

[0048] Specifically, as an optional implementation method in this embodiment, such as Figure 1 As shown, a sludge removal valve 52 is installed on the salt discharge pipe 5. The sludge removal valve 52 is located downstream of the salt discharge valve 51. A high-pressure water inlet 53 is opened on the salt discharge pipe 5 between the salt discharge valve 51 and the sludge removal valve 52.

[0049] Since the discharge is not continuous, the bottom of the thickener and the salt discharge pipe 5 are prone to blockage. Therefore, a high-pressure water inlet 53 on the salt discharge pipe 5 is connected to a high-pressure water circuit. During normal operation, the sludge removal valve 52 is in the open state, and the salt discharge valve 51 is opened to carry out the salt discharge operation. When the pipeline is blocked by salt, the sludge removal valve 52 is closed, the salt discharge valve 51 is opened, and then the pipeline is flushed and cleared through the high-pressure water inlet 53.

[0050] In one embodiment, a slag discharge port 14 is provided at the bottom of the salt hopper to facilitate the cleaning of impurities at the bottom of the salt hopper.

[0051] Specifically, as an optional implementation method in this embodiment, such as Figure 3 As shown, the cylinder 1 is placed on the frame 6, and multiple weighing modules 61 are arranged between the cylinder 1 and the frame 6. The weighing modules 61 and the salt discharge valve 51 are connected to the controller.

[0052] The weighing module 61 can be of pressure or tension type depending on the actual situation. The weighing module 61 is generally installed between the thickener support lug and the stress point of the frame 6. The key is to ensure that the entire weight of the thickener is transmitted to the mounting frame 6 after passing through the weighing module 61. The weighing module 61 and the salt discharge valve 51 of the salt discharge port are controlled by an automatic control system. When the thickener reaches the specified weight, the automatic valve is automatically activated to discharge salt.

[0053] The automatic control system of scraper 41 has a real-time motor current monitoring function. When scraper 41 jams, the current will suddenly increase and the automatic control system will automatically stop to protect the thick system.

[0054] When the thickener is in operation, the scraper 41 should not rotate too fast. If the rotation speed exceeds 5-10 r / min, it will affect its crystallization on the inner wall of the cylinder.

[0055] The working principle of the thickener in this patent application is as follows: During the operation of the thickener, the evaporated mother liquor enters the thickener through the feed inlet 11. The circulating cooling system is activated to cool the evaporated mother liquor. Salts, whose solubility decreases significantly with decreasing temperature, gradually precipitate out. Especially on the cylinder wall of the crystallization zone of the thickener, due to the significant heat transfer effect, a large amount of salt crystals adhere to the cylinder wall. Under the action of the scraper 41, the salt on the cylinder wall is scraped off and enters the salt hopper 13.

[0056] Salts in the mother liquor gradually precipitate out and accumulate at the bottom of the thickener. The supernatant is discharged from the overflow port 12 at the top of the thickener. Due to the high salt density in the mother liquor, the working weight of the thickener gradually increases with the accumulation of salt during the enrichment process. When the discharge weight is reached, the weighing module 61 triggers the automatic discharge mode, the salt discharge valve 51 opens, and the crystallized salt in the salt hopper 13 of the thickener is automatically discharged into the centrifuge under gravity. As discharge continues, the weight of the thickener decreases. When the stop discharge weight is reached, the weighing module 61 triggers the automatic discharge shutdown mode, the salt discharge valve 51 closes, and discharge stops.

[0057] All the devices (parts whose specific structures are not specified) selected in this application are general standard parts or parts known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0058] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0059] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0060] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. Furthermore, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Additionally, the shown or discussed mutual couplings, direct couplings, or communication connections may be through some communication interfaces; indirect couplings or communication connections between devices or units may be electrical, mechanical, or other forms.

[0061] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0062] In addition, in the various embodiments of this utility model, each functional unit can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0063] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A thickener, Its characteristics include, The cylinder has a circular crystallization zone in the upper part, an overflow port in the circular crystallization zone, a feed port at the upper end of the circular crystallization zone, and a salt hopper in the lower part of the cylinder. A salt discharge pipe is connected to the bottom of the salt hopper, and a salt discharge valve is installed on the salt discharge pipe. A water-cooled jacket is installed outside the circular crystallization zone of the cylinder; A scraper system is installed on the cylinder. The scraper system is suitable for scraping the crystallized salt off the inner wall of the circular crystallization zone. The distance between the scraper and the cylinder wall is 1-3 mm, and the rotation speed is generally 5-10 r / min.

2. The thickener according to claim 1, characterized in that, The scraper system includes A geared motor is installed at the upper end of the cylinder, and the geared motor is connected to a main shaft, which is vertically inserted into the cylinder. A tool holder, one side of which is connected to the main shaft via multiple connecting rods, and a scraper assembly is mounted on one side of the tool holder; A scraper assembly, wherein the scraper assembly is elastically set on the blade holder.

3. The thickener according to claim 2, characterized in that, The scraper assembly includes a scraper, multiple guide rods, and a spring; The guide rod is fixed to the scraper. After passing through the blade holder, the guide rod is connected to the locking nut. The spring is sleeved on the guide rod, with one side of the spring abutting against the blade holder and the other side abutting against the scraper.

4. The thickener according to claim 1, characterized in that, A sludge removal valve is installed on the salt discharge pipe, and the sludge removal valve is located downstream of the salt discharge valve. A high-pressure water inlet is opened on the salt discharge pipe between the salt discharge valve and the sludge removal valve.

5. The thickener according to claim 1, characterized in that, The cylinder is placed on the frame, and multiple weighing modules are arranged between the cylinder and the frame. The weighing modules and the salt discharge valve are connected to the controller.

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