Liquid crystallizing tank with solid-liquid separation function

Abstract

The utility model provides a liquid crystallizing tank with a solid-liquid separation function, which belongs to the technical field of crystallizing tanks and comprises an upper tank body and a lower tank body, a discharge pipe is arranged at the bottom of the lower tank body, a tank bottom valve is arranged on the discharge pipe, a solid-liquid separation filter is arranged on the discharge pipe, and the solid-liquid separation filter is arranged on the lower tank body. The tank bottom valve has an open state for communicating the inner cavity of the lower tank body and the solid-liquid separation filter and a closed state for blocking the inner cavity of the lower tank body and the solid-liquid separation filter; the crystallizing tank disclosed by the utility model has a solid-liquid separation function, and solid-liquid separation equipment does not need to be additionally arranged, so that the cost of purchasing, mounting and maintaining the equipment is reduced, the material transfer time is shortened, and the efficiency of the whole production process is improved; and secondly, compared with a structure that a filter screen is directly mounted in the crystallizing tank, the external structure is adopted, so that the filter screen is convenient to clean and replace, and the arrangement of the internal structure of the crystallizing tank is not influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of crystallization tanks, in particular to a liquid crystallization tank with a solid-liquid separation function. Background Art

[0002] A crystallizer is a widely used equipment in the chemical, pharmaceutical, food processing and mineral processing industries, mainly used to extract pure solid crystals from solutions through a crystallization process. Crystallizers are designed in a variety of ways and can be cooling, evaporating, freezing or reactive types, depending on the desired crystallization mechanism and product characteristics. The operation of a crystallizer requires precise control of crystallization conditions such as temperature, concentration, stirring speed and time to optimize the quality and purity of the crystals.

[0003] Usually, a crystallizer uses its jacket to cool or heat the liquid material in the tank for vacuum concentration, relying on the difference in solubility to put the material in a non-equilibrium state, causing the liquid material to precipitate solids, and the solid material is precipitated in the form of crystals. However, the existing crystallizer does not include the function of solid-liquid separation or washing and impurity removal, resulting in these steps requiring the use of additional equipment to complete, which not only increases the total number of equipment on the production line, but also increases the production cost of the enterprise. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings and deficiencies of the prior art and to provide a liquid crystallization tank with a solid-liquid separation function.

[0005] The technical solution adopted by the utility model is as follows: a liquid crystallization tank with a solid-liquid separation function, comprising an upper tank body and a lower tank body, a discharge pipe is arranged at the bottom of the lower tank body, a tank bottom valve is arranged on the discharge pipe, a solid-liquid separation filter is arranged on the discharge pipe, and the tank bottom valve has an open state connecting the inner cavity of the lower tank body with the solid-liquid separation filter and a closed state blocking the inner cavity of the lower tank body and the solid-liquid separation filter.

[0006] Preferably, the solid-liquid separation filter includes a first shell, a filter element plate and a second shell, one end of the first shell is connected to the discharge pipe, one end of the second shell is provided with a drain valve, and the filter element plate is detachably arranged between the first shell and the second shell.

[0007] Preferably, a stirring mechanism is provided on the upper tank body, and the stirring mechanism includes a stirring bracket, a stirring motor, a stirring shaft and a stirring paddle. The stirring bracket is arranged on the top of the upper tank body, and the stirring motor is arranged on the stirring bracket and is used to drive the stirring shaft to rotate. The stirring shaft is rotatably arranged on the stirring bracket, and one end extends into the inner cavity of the lower tank body and is connected to the stirring paddle. A mechanical seal is arranged between the stirring shaft and the upper tank body.

[0008] Preferably, a lifting mechanism is further included, the lifting mechanism includes a lifting frame and a lifting drive, the lifting frame is connected to the upper tank body, and the lifting drive is used to drive the lifting frame to move up and down so that the upper tank body has an open position and a closed position relative to the lower tank body.

[0009] Preferably, a flipping mechanism is also included. When the upper tank body is in the open position, the stirring mechanism is located outside the flipping path of the lower tank body. The flipping mechanism includes a flipping drive and a flipping frame. The lower tank body is rotatably arranged on the flipping frame, and the flipping drive is used to drive the lower tank body to rotate and dump the material therein.

[0010] Preferably, the lower tank body is provided with a tank jacket, a heat-insulating layer is provided outside the tank jacket, and a cold and hot medium inlet and a cold and hot medium outlet are provided on the tank jacket.

[0011] Preferably, the cold and hot medium inlet and the cold and hot medium outlet are both externally connected using hoses.

[0012] Preferably, a feed inlet, an air inlet and a spray ball cleaning port are provided on the top of the upper tank body, and the spray ball cleaning port is provided with a spray ball extending into the inner cavity of the upper tank body.

[0013] Preferably, the upper tank body is provided with an upper flange, and the lower tank body is provided with a lower flange, the upper flange and the lower flange are detachably connected, and C-shaped clamping rings are evenly arranged along the circumference of the upper flange and the lower flange.

[0014] Preferably, it also includes a control system and a clamping ring in place detection device, the clamping ring in place detection device includes a number of detection positions that match the C-type clamping ring, the clamping ring in place detection device is interlocked with the lifting mechanism through the control system, and the lifting mechanism can only operate when a set number of C-type clamping rings are placed on the detection positions.

[0015] The beneficial effects of the utility model are as follows: the crystallizer in the utility model has a solid-liquid separation function, and there is no need to add additional solid-liquid separation equipment, which reduces the cost of equipment procurement, installation and maintenance, and also reduces the time of material transfer, and improves the efficiency of the entire production process. Secondly, compared with directly installing a filter screen in the crystallizer to achieve solid-liquid separation, the use of an external structure makes it easy to clean and replace the filter screen, and it is also possible to replace the corresponding filter screen according to different filtering requirements. In addition, it will not affect the setting of the internal structure of the crystallizer, such as the stirring mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, without paying creative labor, other drawings obtained based on these drawings still belong to the scope of the utility model.

[0017] Figure 1 For the utility model Figure 1 ;

[0018] Figure 2 It is a schematic diagram of the solid-liquid separation filter in the utility model;

[0019] Figure 3 It is a schematic diagram of the stirring mechanism and the upper tank body in the utility model;

[0020] Figure 4 For the utility model Figure 2 ;

[0021] Figure 5 for Figure 1 Enlarged view of point A in the middle. DETAILED DESCRIPTION

[0022] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0023] In the description of the present application, it should be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In the description of the present application, unless otherwise specified, "plurality" means two or more.

[0024] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0025] In the description of this application, it should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for the purpose of distinguishing two non-identical entities with the same name or non-identical parameters. It can be seen that "first" and "second" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. The subsequent embodiments will not explain this one by one.

[0026] Embodiment 1:

[0027] like Figures 1 to 5 As shown, a liquid crystallization tank with a solid-liquid separation function comprises an upper tank body 1 and a lower tank body 2, wherein the upper tank body 1 and the lower tank body 2 form a tank body with an inner cavity, a discharge pipe 21 is arranged at the bottom of the lower tank body 2, a tank bottom valve 3 is arranged on the discharge pipe 21, a solid-liquid separation filter 4 is arranged on the discharge pipe 21, the tank bottom valve 3 has an open state for connecting the inner cavity of the lower tank body 2 with the solid-liquid separation filter 4 and a closed state for blocking the inner cavity of the lower tank body 2 from the solid-liquid separation filter 4, the crystallization tank has a solid-liquid separation function through the solid-liquid separation filter 4, there is no need to add additional solid-liquid separation equipment, the cost of equipment procurement, installation and maintenance is reduced, the time of material transfer is reduced, and the efficiency of the entire production process is improved.

[0028] Secondly, compared with directly installing a filter in the crystallizer to achieve solid-liquid separation, the external structure makes it easier to clean and replace the filter, and it is also possible to replace the corresponding filter according to different filtering requirements, just by closing the tank bottom valve 3. In addition, it will not affect the setting of the internal structure of the crystallizer, such as the stirring mechanism.

[0029] Furthermore, the solid-liquid separation filter 4 includes a first shell 41, a filter plate 42 and a second shell 43. The filter plate 42 is detachably arranged between the first shell 41 and the second shell 43, presenting a three-section structure and connected by a clamp. At the same time, a sealing structure is arranged between the connected end faces. One end of the first shell 41 is connected to the discharge pipe 21, and one end of the second shell 43 is provided with a drain valve 5 to control the discharge of liquid.

[0030] The above structure makes it easier to disassemble and assemble the filter element plate 42, thereby improving the application range of the crystallization tank.

[0031] Furthermore, the upper tank body 1 is provided with a stirring mechanism 6, and the stirring mechanism 6 includes a stirring bracket 61, a stirring motor 62, a stirring shaft 63 and a stirring paddle 64. The stirring bracket 61 is provided at the top of the upper tank body 1, and the stirring motor 62 is provided on the stirring bracket 61 and is used to drive the stirring shaft 63 to rotate. The stirring shaft 63 is rotatably provided on the stirring bracket 61, and one end extends to the inner cavity of the lower tank body 2 and is connected to the stirring paddle 64. A mechanical seal 65 is provided between the stirring shaft 63 and the upper tank body 1, and a mechanical rotary seal structure commonly used in the prior art can be referred to. Among them, the stirring shaft 63 and the inner walls of the upper tank body 1 and the lower tank body 2 are provided in a conformal manner, which is convenient for cleaning the tank body.

[0032] Furthermore, a lifting mechanism 7 is included, and the lifting mechanism 7 includes a lifting frame 71 and a lifting driver 72. The lifting frame 71 is connected to the upper tank body 1, and the lifting driver 72 is used to drive the lifting frame 71 to move up and down so that the upper tank body 1 has an open position and a closed position relative to the lower tank body 2. In this embodiment, the lifting driver 72 adopts a hydraulic cylinder, and of course, a motor and a screw slider structure can also be adopted. The upper tank body 1 can be separated from the lower tank body 2 through the lifting mechanism 7, which is particularly suitable for large crystallization tanks.

[0033] Furthermore, a turnover mechanism 8 is included. When the upper tank body 1 is in the open position, the stirring mechanism 6 is located outside the turnover path of the lower tank body 2, that is, it does not affect the turnover of the lower tank body 2. The turnover mechanism 8 includes a turnover driver 81 and a turnover frame 82. The lower tank body 2 is rotatably arranged on the turnover frame 82. The turnover driver 81 is used to drive the lower tank body 2 to rotate and dump the material therein, which reduces the work intensity of material unloading and improves the convenience of operation. It is particularly suitable for materials with heavy crystals or high viscosity. In addition, it is also convenient for cleaning the lower tank body 2.

[0034] Furthermore, a tank jacket 9 is provided on the lower tank body 2, and an insulation layer 10 is provided outside the tank jacket 9. A cold / hot medium inlet 91 and a cold / hot medium outlet 92 are provided on the tank jacket 9. Both the cold / hot medium inlet 91 and the cold / hot medium outlet 92 are connected to cold / hot medium equipment. The temperature in the tank body is precisely controlled by the circulation of cold / hot medium, which has a direct impact on the crystallization rate and crystal quality.

[0035] Furthermore, the cold and hot medium inlet 91 and the cold and hot medium outlet 92 are both externally connected with a hose, so as to avoid interference with the turning of the lower tank body 2.

[0036] Furthermore, a feed port 11, an air inlet 12 and a spray ball cleaning port 13 are provided on the top of the upper tank body 1. The spray ball cleaning port 13 is provided with a spray ball extending into the inner cavity of the upper tank body 1. The feed port 11 simplifies the material conveying process. The air inlet 12 can be used to adjust the pressure inside the tank. The spray ball can make the entire tank body be cleaned evenly and effectively, thereby realizing online cleaning.

[0037] Furthermore, the upper tank body 1 is provided with an upper flange 101, and the lower tank body 2 is provided with a lower flange 201. The upper flange 101 and the lower flange 201 are detachably connected, and C-type clamping rings 14 are evenly arranged along the circumference of the upper flange 101 and the lower flange 201. A sealing structure is arranged between the upper flange 101 and the lower flange 201 to ensure the stability and sealing of the connection between the upper flange 101 and the lower flange 201, prevent leakage, and improve the safety of the crystallization tank.

[0038] Furthermore, it also includes a control system and a clamping ring in-place detection device 15. The control system is usually controlled by PLC. The clamping ring in-place detection device 15 includes a number of detection positions that are adapted to the C-type clamping ring 14. Generally, the number of detection positions is not less than the number of C-type clamping rings 14. Multiple settings can be adapted to crystallization tanks of different specifications. The clamping ring in-place detection device 15 is interlocked with the lifting mechanism 7 through the control system. When a set number of C-type clamping rings 14 are placed in the detection position, the lifting mechanism 7 can operate. The control system ensures that all C-type clamping rings 14 are correctly placed in their detection positions through the clamping ring in-place detection device 15, preventing the lifting mechanism 7 from erroneously operating when the clamping ring is not completely disassembled, causing damage to the crystallization tank, and reducing potential safety risks.

[0039] The production process of this crystallization tank is as follows: keep the tank bottom valve 3 closed, the upstream liquid material is automatically pumped into the tank body through the feed port 11, and the jacket 9 is passed through the refrigerant or heat medium to completely precipitate the solid material crystals. Open the tank bottom valve 3, open the drain valve 5, and use vacuum or compressed air to pressurize the mother liquid through the solid-liquid separation filter 4 from the drain valve 5, and the crystal material is intercepted on the filter plate core 42 of the solid-liquid separation filter. After the solid-liquid separation is completed, close the drain valve 5, and then inject the filtrate into the crystallization tank through the spray ball. After the material is thoroughly stirred and cleaned by the stirring mechanism 6, the washing liquid is discharged from the drain valve 5, wet filtered and left on the filter plate core 42 of the solid-liquid separation filter. Stop the stirring paddle, return the tank to normal pressure, remove the pipe behind the drain valve 5, open all C-type clamping rings 14 and place them all in the detection position. After all C-type clamping rings 14 are already in the detection position and are sensed, start the lifting mechanism 7 to lift the upper tank body 1 and the stirring mechanism 6 to the highest position. The turning mechanism 8 is started to turn over the lower tank body 2 to discharge the materials.

[0040] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.

Claims

1. A liquid crystallization tank with solid-liquid separation function, characterized in that: The invention comprises an upper tank body (1) and a lower tank body (2), wherein a discharge pipe (21) is arranged at the bottom of the lower tank body (2), a tank bottom valve (3) is arranged on the discharge pipe (21), a solid-liquid separation filter (4) is arranged on the discharge pipe (21), and the tank bottom valve (3) has an open state for connecting the inner cavity of the lower tank body (2) with the solid-liquid separation filter (4) and a closed state for blocking the inner cavity of the lower tank body (2) and the solid-liquid separation filter (4).

2. The liquid crystallization tank with solid-liquid separation function according to claim 1, characterized in that: The solid-liquid separation filter (4) comprises a first shell (41), a filter core plate (42) and a second shell (43); one end of the first shell (41) is connected to a discharge pipe (21); one end of the second shell (43) is provided with a drain valve (5); and the filter core plate (42) is detachably arranged between the first shell (41) and the second shell (43).

3. The liquid crystallization tank with solid-liquid separation function according to claim 1, characterized in that: The upper tank body (1) is provided with a stirring mechanism (6), the stirring mechanism (6) comprising a stirring support (61), a stirring motor (62), a stirring shaft (63) and a stirring paddle (64), the stirring support (61) being provided at the top of the upper tank body (1), the stirring motor (62) being provided on the stirring support (61) and being used for driving the stirring shaft (63) to rotate, the stirring shaft (63) being rotatably provided on the stirring support (61), and one end of the stirring shaft (63) extending into the inner cavity of the lower tank body (2) and being connected to the stirring paddle (64), and a mechanical seal (65) being provided between the stirring shaft (63) and the upper tank body (1).

4. The liquid crystallization tank with solid-liquid separation function according to claim 3, characterized in that: It also includes a lifting mechanism (7), the lifting mechanism (7) including a lifting frame (71) and a lifting driver (72), the lifting frame (71) is connected to the upper tank body (1), and the lifting driver (72) is used to drive the lifting frame (71) to move up and down so that the upper tank body (1) has an open position and a closed position relative to the lower tank body (2).

5. The liquid crystallization tank with solid-liquid separation function according to claim 4, characterized in that: The invention also comprises a turning mechanism (8). When the upper tank body (1) is in the open position, the stirring mechanism (6) is located outside the turning path of the lower tank body (2). The turning mechanism (8) comprises a turning drive (81) and a turning frame (82). The lower tank body (2) is rotatably arranged on the turning frame (82). The turning drive (81) is used to drive the lower tank body (2) to rotate and dump the material therein.

6. The liquid crystallization tank with solid-liquid separation function according to claim 1, characterized in that: The lower tank body (2) is provided with a tank jacket (9), the tank jacket (9) is provided with a heat insulation layer (10) outside, and the tank jacket (9) is provided with a cold and hot medium inlet (91) and a cold and hot medium outlet (92).

7. The liquid crystallization tank with solid-liquid separation function according to claim 6, characterized in that: The cold and hot medium inlet (91) and the cold and hot medium outlet (92) are both externally connected using hoses.

8. The liquid crystallization tank with solid-liquid separation function according to claim 3, characterized in that: The top of the upper tank body (1) is provided with a feed inlet (11), an air inlet (12) and a spray ball cleaning port (13); the spray ball cleaning port (13) is provided with a spray ball extending into the inner cavity of the upper tank body (1).

9. The liquid crystallization tank with solid-liquid separation function according to claim 3, characterized in that: The upper tank body (1) is provided with an upper flange (101), and the lower tank body (2) is provided with a lower flange (201); the upper flange (101) and the lower flange (201) are detachably connected, and C-shaped clamping rings (14) are evenly arranged along the circumference of the upper flange (101) and the lower flange (201).

10. The liquid crystallization tank with solid-liquid separation function according to claim 9, characterized in that: It also includes a control system and a clamping ring in-place detection device (15), wherein the clamping ring in-place detection device (15) includes a number of detection positions that match the C-type clamping rings (14), and the clamping ring in-place detection device (15) is interlocked with the lifting mechanism (7) through the control system. When a set number of C-type clamping rings (14) are placed on the detection positions, the lifting mechanism (7) can only operate.

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