Recrystallization device

Abstract

The utility model discloses a recrystallization device which comprises a heating cavity, a refrigeration cavity is arranged at the bottom end of the heating cavity, a top cover is arranged at the top of the heating cavity, an observation window and a handle are arranged on the top cover, a second filter cavity is arranged at the bottom end of the refrigeration cavity, the bottom end of the second filter cavity is communicated with a suction filtration barrel, and a connecting pipe is arranged on the suction filtration barrel. According to the utility model, the defects in the prior art are overcome, the raw materials do not need to be frequently transferred in the recrystallization stage through the integrated form of dissolving, filtering, cooling recrystallization and suction filtration, the recrystallization treatment efficiency is improved, and the device has higher social use value and application prospect.

Description

Technical Field

[0001] The utility model relates to the technical field of recrystallization, in particular to a recrystallization device. Background Art

[0002] Recrystallization is a common purification method. It is a process in which the crystals are dissolved in a solvent or melted and then re-crystallized from the solution or melt. The function of recrystallization is to purify impure substances or separate mixed salts from each other.

[0003] However, in the traditional recrystallization method, operations need to be performed in four containers respectively, which makes the steps complicated and easily causes waste of raw materials.

[0004] In addition, the temperature of the hot saturation filtration step is difficult to control during the operation, so that if the temperature is not high enough, crystals will be precipitated and filtered out together with the impurities. At the same time, if the temperature is too high, the solution will boil violently.

[0005] To this end, the inventors have designed and developed a recrystallization device to solve the problems of complicated and cumbersome traditional recrystallization operation and difficult temperature control during the filtration process. Utility Model Content

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A recrystallization device comprises a heating chamber, a refrigeration chamber is provided at the bottom of the heating chamber, a top cover is provided at the top of the heating chamber, an observation window and a handle are provided on the top cover, a second filter chamber is provided at the bottom of the refrigeration chamber, a suction filter barrel is connected to the bottom of the second filter chamber, and a connecting pipe is provided on the suction filter barrel.

[0008] Preferably, a dissolving barrel is mounted inside the heating chamber, and a control valve is connected to the bottom end of the dissolving barrel.

[0009] Preferably, the bottom end of the control valve is connected to a first filter chamber, a first filter plate is provided at the bottom end of the first filter chamber, and a fixing ring for fixing the position of the first filter plate is also provided at the bottom end of the first filter chamber.

[0010] Preferably, a second filter plate is provided in the second filter cavity, and a driving motor is provided in the middle of the bottom surface of the second filter plate.

[0011] Preferably, a main shaft rotatably mounted on the bottom surface of the refrigeration chamber is provided at the top of the output shaft of the driving motor, a pushing rack in contact with the inner wall of the refrigeration chamber is provided on the main shaft, and a spreading rack for spreading the crystallized material on the top surface of the second filter plate is provided at the bottom of the main shaft.

[0012] Preferably, a feed opening is provided on the bottom surface of the refrigeration cavity, and a sealing mechanism is provided on the refrigeration cavity. The sealing mechanism comprises a sealing plate which is sealed with the feed opening, and a rotating shaft is provided on the sealing plate.

[0013] Preferably, a bracket rotatably mounted on the rotating shaft is provided on the bottom surface of the refrigeration chamber, and an adjusting motor fixed to the outer wall of the refrigeration chamber is provided at the end of the rotating shaft.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. Through the setting of the dissolving barrel, the heating chamber, the refrigeration chamber, the second filtering chamber and the suction barrel are connected in sequence from top to bottom, so that the raw materials can be dissolved, filtered, cooled, crystallized and filtered in sequence, so that the raw materials do not need to be frequently transported during the recrystallization stage, so as to overcome the need for the raw materials to be processed step by step through containers at different positions at different stages.

[0016] 2. By setting up the plugging mechanism and utilizing the cooperation between the feed port and the plugging mechanism, the loss of filtrate can be avoided during the cooling and recrystallization stage of the filtrate, and free opening and closing operations can be performed.

[0017] 3. Through the setting of the main shaft and the use of the driving motor to drive the rotation of the main shaft, the pusher rack can solve the problem of crystal adhesion that occurs during the cooling and recrystallization process, avoiding the crystal adhesion and accumulation and preventing the next step of filtration operation from proceeding normally.

[0018] 4. Through the setting of the main shaft and the cooperation between the main shaft and the material spreading rack, the crystals dropped from the discharge port to the top surface of the second filter plate can be spread out, so that the filtration efficiency of the crystals on the top surface of the second filter plate by the filtration barrel through the connecting pipe is improved.

[0019] In summary, the utility model overcomes the shortcomings of the prior art. Through the integrated form of dissolution, filtration, cooling recrystallization and suction filtration, the raw materials do not need to be frequently transported during the recrystallization stage, which improves the processing efficiency of recrystallization and has high social use value and application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] 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, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 It is a schematic diagram of the structural section of the utility model;

[0023] Figure 3It is a schematic diagram of the structural cross section of the refrigeration chamber in the utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the refrigeration chamber in the utility model;

[0025] Figure 5 It is a schematic diagram of the structural cross section of the dissolving barrel in the utility model;

[0026] Figure 6 It is a structural schematic diagram of the blocking mechanism in the utility model;

[0027] Figure 7 It is a schematic diagram of the bottom structure of the first filter cavity in the utility model.

[0028] In the figure: 1. Heating chamber; 2. Refrigeration chamber; 3. Top cover; 31. Observation window; 32. Handle; 4. Second filter chamber; 41. Second filter plate; 5. Filter barrel; 51. Connecting pipe; 6. Dissolving barrel; 61. Control valve; 7. First filter chamber; 71. First filter plate; 72. Fixing ring; 8. Main shaft; 81. Driving motor; 82. Pushing rack; 83. Laying rack; 9. Feeding port; 10. Sealing mechanism; 101. Sealing plate; 102. Rotating shaft; 103. Bracket; 104. Adjusting motor. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Example 1

[0031] Reference Figure 1-7 A recrystallization device comprises a heating chamber 1, a refrigeration chamber 2 is arranged at the bottom of the heating chamber 1, temperature control equipment is arranged in both the heating chamber 1 and the refrigeration chamber 2, a top cover 3 is arranged on the top of the heating chamber 1, an observation window 31 and a handle 32 are arranged on the top cover 3, the connection between the top cover 3 and the heating chamber 1 is a rotating connection, and the top cover 3 can be rotated and opened around the axis connected to the heating chamber 1 by pulling the handle 32, and the handle 32 can observe the dissolution situation inside the dissolution barrel 6, a second filter chamber 4 is arranged at the bottom of the refrigeration chamber 2, and the bottom end of the second filter chamber 4 is connected to a suction barrel 5, and a connecting pipe 51 is arranged on the suction barrel 5, and the connecting pipe 51 is connected to an external vacuum pump.

[0032] Specifically, a dissolving barrel 6 is installed inside the heating chamber 1, and a control valve 61 is connected to the bottom of the dissolving barrel 6. Through the setting of the dissolving barrel 6, the heating chamber 1 can be used to provide heat supply to the inside of the dissolving barrel 6 to allow the crystals to dissolve inside the dissolving barrel 6.

[0033] Specifically, the bottom end of the control valve 61 is connected to the first filter chamber 7, and the bottom end of the first filter chamber 7 is provided with a first filter plate 71. The bottom end of the first filter chamber 7 is also provided with a fixing ring 72 for fixing the position of the first filter plate 71. The dissolved solution will enter the first filter chamber 7, and then be filtered by the first filter plate 71, so that the filtrate can enter the interior of the refrigeration chamber 2, so that the filtrate can be cooled and recrystallized inside the refrigeration chamber 2.

[0034] Specifically, a second filter plate 41 is provided in the second filter cavity 4 , and a driving motor 81 is provided in the middle of the bottom surface of the second filter plate 41 .

[0035] Specifically, the top of the output shaft of the driving motor 81 is provided with a main shaft 8 that is rotatably mounted on the bottom surface of the refrigeration chamber 2, and the main shaft 8 is provided with a pushing rack 82 that contacts the inner wall of the refrigeration chamber 2, and the bottom of the main shaft 8 is provided with a spreading rack 83 that spreads the crystallized material on the top surface of the second filter plate 41. The output shaft of the driving motor 81 can synchronously drive the pushing rack 82 to rotate inside the refrigeration chamber 2, and drive the spreading rack 83 to rotate inside the second filter chamber 4, so that the pushing rack 82 can push the material that has been cooled and recrystallized inside the refrigeration chamber 2 from the discharge port 9 to the top surface of the second filter plate 41, and the rotation of the spreading rack 83 can spread the material that has fallen to the top surface of the second filter plate 41, so as to facilitate subsequent filtration operations.

[0036] Specifically, a feed opening 9 is provided on the bottom surface of the refrigeration chamber 2, and a sealing mechanism 10 is provided on the refrigeration chamber 2. The sealing mechanism 10 includes a sealing plate 101 which is sealed with the feed opening 9, and a rotating shaft 102 is provided on the sealing plate 101. By opening the feed opening 9 and adjusting the sealing mechanism 10, the feed opening 9 is opened, so that the space between the refrigeration chamber 2 and the second filter chamber 4 is connected, so that the material can fall from the refrigeration chamber 2 to the top surface of the second filter plate 41 through the feed opening 9.

[0037] Specifically, a bracket 103 rotatably mounted with the rotating shaft 102 is provided on the bottom surface of the refrigeration chamber 2, and an adjusting motor 104 fixed to the outer wall of the refrigeration chamber 2 is provided at the end of the rotating shaft 102. Through the setting of the blocking mechanism 10, the sealing plate 101 can be rotated under the drive of the rotating shaft 102, thereby completing the opening and closing operation of the sealing plate 101 for the discharge port 9.

[0038] Working principle: In the present invention, the raw material to be recrystallized and an appropriate amount of solvent are first poured into the dissolving barrel 6, and then the heating state of the heating chamber 1 is turned on, so that the heating chamber 1 can provide dissolving heat for the crystals inside the dissolving barrel 6, so that the raw material can be dissolved in the solvent, and the dissolution condition inside the dissolving barrel 6 is observed through the observation window 31. When the solution reaches a supersaturated state, the refrigeration chamber 2 is activated to reduce the temperature inside the refrigeration chamber 2, so that a negative pressure is formed inside the refrigeration chamber 2;

[0039] Then, the control valve 61 is opened to allow the solution to enter the top surface of the first filter plate 71, and the solution is then filtered into the interior of the refrigeration chamber 2 by the negative pressure.

[0040] After the solution is completely filtered, the temperature inside the refrigeration chamber 2 can be lowered again, and the solution can be cooled and crystallized by temperature control. After the crystallization process is complete, it can be connected to the external vacuum pump through the connecting pipe 51, so that the second filter chamber 4 and the suction barrel 5 enter the suction state;

[0041] Then, the regulating motor 104 is turned on, and the output shaft of the regulating motor 104 drives the rotating shaft 102 to rotate, so that the sealing plate 101 is separated from the discharge port 9, so that the interior of the refrigeration chamber 2 is in a connected state with the interior of the second filter chamber 4, and the driving motor 81 is turned on, so that the main shaft 8 can drive the pushing rack 82 and the spreading rack 83 to rotate, so that the pushing rack 82 can scrape off the crystal attachments on the inner wall of the refrigeration chamber 2, and simultaneously push the crystal material through the discharge port 9 to fall on the top surface of the second filter plate 41, and at the same time, the spreading rack 83 can spread the crystal material that falls on the top surface of the second filter plate 41;

[0042] With the action of the vacuum pump connected to the outside through the connecting pipe 51 , the crystallized material on the top surface of the second filter plate 41 can be filtered, and the filtered liquid will enter the interior of the filtration barrel 5 for collection.

[0043] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0044] In the present invention, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix" and the like 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, a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0046] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A recrystallization device, comprising a heating chamber (1), characterized in that: A refrigeration chamber (2) is provided at the bottom end of the heating chamber (1), a top cover (3) is provided at the top of the heating chamber (1), an observation window (31) and a handle (32) are provided on the top cover (3), a second filter chamber (4) is provided at the bottom end of the refrigeration chamber (2), the bottom end of the second filter chamber (4) is connected to a suction filter barrel (5), and a connecting pipe (51) is provided on the suction filter barrel (5).

2. A recrystallization device according to claim 1, characterized in that: A dissolving barrel (6) is mounted inside the heating chamber (1), and a control valve (61) is connected to the bottom end of the dissolving barrel (6).

3. A recrystallization device according to claim 2, characterized in that: The bottom end of the control valve (61) is connected to a first filter chamber (7), the bottom end of the first filter chamber (7) is provided with a first filter plate (71), and the bottom end of the first filter chamber (7) is also provided with a fixing ring (72) for fixing the position of the first filter plate (71).

4. A recrystallization device according to claim 1, characterized in that: A second filter plate (41) is provided in the second filter cavity (4), and a driving motor (81) is provided in the middle of the bottom surface of the second filter plate (41).

5. A recrystallization device according to claim 4, characterized in that: The top end of the output shaft of the driving motor (81) is provided with a main shaft (8) which is rotatably mounted on the bottom surface of the refrigeration chamber (2); the main shaft (8) is provided with a pushing frame (82) which contacts the inner wall of the refrigeration chamber (2); and the bottom of the main shaft (8) is provided with a spreading frame (83) which spreads the crystallized material on the top surface of the second filter plate (41).

6. A recrystallization device according to claim 5, characterized in that: The bottom surface of the refrigeration cavity (2) is provided with a feed opening (9), and the refrigeration cavity (2) is provided with a sealing mechanism (10), the sealing mechanism (10) comprising a sealing plate (101) which is sealed with the feed opening (9), and a rotating shaft (102) is provided on the sealing plate (101).

7. A recrystallization device according to claim 6, characterized in that: The bottom surface of the refrigeration chamber (2) is provided with a bracket (103) which is rotatably mounted on the rotating shaft (102), and the end of the rotating shaft (102) is provided with an adjusting motor (104) fixed on the outer wall of the refrigeration chamber (2).

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