Material cooling crystallizing tank

Abstract

The utility model discloses a material cooling crystallizing tank which comprises a reaction tank, a coil pipe spirally wound outside the reaction tank and a shell arranged outside the reaction tank and the coil pipe, and a plurality of communicating pipes communicated with the coil pipe at the corresponding position inside the shell are arranged on one side of the shell at equal intervals in the vertical direction. The communicating pipe is connected with the return pipe, and a valve is mounted on the communicating pipe; and a liquid level meter is vertically mounted on one side, close to the communicating pipe, of the shell. According to the utility model, by closing the valves on all the communicating pipes, a condensing agent enters the coil pipe from the bottom conveying pipe, the liquid level height of an internal material is distinguished according to the liquid level meter, and the valve on the closest communicating pipe above the liquid level is opened, so that the condensing agent only circulates in the coil pipe at the position corresponding to the material, and the cooling is realized; the circulating of the redundant part of the coil pipe above is avoided, so that the reflux path of the condensing agent is shorter, the reflux time is shorter, the cooling is faster, and the energy consumption required by flowing is lower.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical equipment, in particular to a material cooling crystallization tank. Background Art

[0002] In the field of chemical production, materials often need to be purified. There are many ways to purify materials, including crystallization, distillation, chromatography, extraction, etc. Among them, the crystallizer is a chemical equipment that uses crystallization for purification, which is very common in the field of chemical production.

[0003] The solubility of various components in the material is different. Since the solubility is affected by temperature, the corresponding material components can be crystallized by cooling to a certain degree according to the solubility of the components in the material. The existing crystallizer is provided with a cooling coil that covers the entire crystallizer, that is, extends from the bottom of the crystallizer to the top of the crystallizer. The lower end of the cooling coil is connected to the condensing agent delivery pipeline, and the upper end is connected to the condensing agent return pipeline, so that the condensing agent flows to take away the heat of the crystallizer to achieve cooling crystallization.

[0004] However, when the crystallizer is used, it is often encountered that the material does not fill the crystallizer. It is often the case that only half of the tank or less than half of the tank is filled with materials, but the condensing agent has to pass through the entire coil, and the effective length of the coil cannot be adjusted according to the amount of material. The coil corresponding to the empty tank above the material not only has no obvious effect on cooling the material, but also causes the condensing agent to have a long circulation distance, a long time, and a slow cooling speed. The unnecessary flow of the condensing agent in the coil corresponding to the empty tank above the material will also cause unnecessary energy consumption and waste. There are certain shortcomings in practicality. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a material cooling crystallization tank, which is used to solve the problem that the coils of the crystallization tanks currently circulating on the market are all a whole piece extending from the bottom of the crystallization tank to the top of the crystallization tank, and the effective length of the coils cannot be adjusted according to the amount of material, resulting in insufficient practicality.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0007] A material cooling crystallization tank comprises a reaction tank, a coil spirally wound on the outside of the reaction tank, and a shell installed on the outside of the reaction tank and the coil, a delivery pipe connected to the bottom end of the coil is installed at the bottom of the shell, and a plurality of connecting pipes connected to the coil at corresponding positions inside are equidistantly installed on one side of the shell in the vertical direction, the connecting pipes are connected to a reflux pipe and a valve is installed on the connecting pipes;

[0008] A liquid level gauge is vertically installed at a position close to the connecting pipe on one side of the shell. The connecting pipes at the top and bottom of the liquid level gauge penetrate the shell and are connected to the interior of the reaction tank. A detachable filter is arranged inside the connecting pipe at the bottom of the liquid level gauge.

[0009] Preferably, the shell is provided with mounting holes at positions corresponding to the communicating pipe and the connecting pipe, and the surfaces of the connecting pipe and the communicating pipe are sleeved with cover plates fixedly mounted on the outer wall of the shell.

[0010] Preferably, a scraper is fixedly connected radially inside the connecting pipe below the liquid level gauge, and a fixed frame for installing a filter is movably connected inside the connecting pipe. The filter is located between the fixed frame and the scraper and on the side of the liquid level gauge close to the casing.

[0011] Preferably, a pull rod is fixedly connected to a side of the fixed frame away from the filter screen, and an end cap installed at an open position of the end of the connecting pipe is movably sleeved on the surface of the pull rod.

[0012] Preferably, one end of the pull rod located outside the connecting pipe is fixedly connected to a flat handle, the end cover is fixedly connected to a limit card for movably engaging the flat handle, and the horizontal distance between the filter screen and the liquid level meter is smaller than the width of the limit card.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The utility model provides a liquid level meter, a plurality of connecting pipes connected to the coil and equidistantly installed in a vertical direction, and valves on the connecting pipes. The valves on all the connecting pipes are closed, and the condensing agent enters the coil from the bottom delivery pipe. The liquid level of the internal material is identified according to the liquid level meter, and the valve on the connecting pipe closest to the liquid level is opened, so that the condensing agent flows only from the coil at the corresponding position of the material to achieve cooling, and avoids the circulation from the redundant part of the upper coil, so that the reflux distance of the condensing agent is shorter, the reflux time is shorter, the cooling is faster, and the energy consumption required for the flow is lower, so that the effective length of the coil can be adjusted as needed according to the amount of internal material, and the practicality of the crystallizer is effectively improved, and the problem that the coil of the crystallizer currently circulated on the market is a whole coil extending from the bottom of the crystallizer to the top of the crystallizer and the effective length of the coil cannot be adjusted according to the amount of material, resulting in insufficient practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the reaction tank and the shell at the corresponding position of the connecting pipe of the utility model;

[0017] Figure 3This is a schematic diagram of the internal structure of the reaction tank and the shell at the corresponding position of the liquid level gauge of the utility model;

[0018] Figure 4 This is a front cross-sectional view of the connecting pipe of the utility model corresponding to the pull rod position.

[0019] In the figure: 1. reaction tank; 2. coil; 3. shell; 301. mounting hole; 302. cover plate; 4. delivery pipe; 5. connecting pipe; 6. reflux pipe; 7. valve; 8. liquid level gauge; 801. connecting pipe; 802. end cover; 9. filter screen; 10. scraper; 11. fixing frame; 12. pull rod; 13. straight handle; 14. limit card. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0021] like Figure 1-4 As shown, the utility model provides a technical solution: a material cooling crystallization tank, comprising a reaction tank 1, a coil 2 spirally wound on the outside of the reaction tank 1, and a shell 3 installed on the outside of the reaction tank 1 and the coil 2, the reaction tank 1 is used to contain materials, the coil 2 is used to circulate a condensing agent to cool the reaction tank 1 and the materials inside, and the coil 2 can also transport hot steam, hot oil or hot water to heat the reaction tank 1 and the materials inside;

[0022] A delivery pipe 4 connected to the bottom end of the coil 2 is installed at the bottom of the shell 3. When used for cooling, the delivery pipe 4 is connected to the cooling device to input the condensing agent. When used for heating, the delivery pipe 4 is connected to the heating device to input hot steam, hot oil or hot water. A plurality of connecting pipes 5 connected to the coil 2 at corresponding positions inside are equidistantly installed along the vertical direction on one side of the shell 3. The connecting pipe 5 is connected to the return pipe 6 and a valve 7 is installed on the connecting pipe 5. By controlling the opening and closing of the plurality of valves 7, the position where the coil 2 is connected to the return pipe 6 can be controlled, and the effective length of the coil 2 can be adjusted;

[0023] A liquid level gauge 8 is vertically installed at a position near the connecting pipe 5 on one side of the shell 3. The connecting pipes 801 at the top and bottom of the liquid level gauge 8 both penetrate the shell 3 and are connected to the inside of the reaction tank 1. The liquid level gauge 8 is used to observe the liquid level of the material inside the reaction tank 1 from the outside of the shell 3.

[0024] The housing 3 is provided with mounting holes 301 at positions corresponding to the connecting pipe 5 and the connecting pipe 801. The surfaces of the connecting pipe 801 and the connecting pipe 5 are sleeved with a cover plate 302 fixedly installed on the outer wall of the housing 3. The mounting holes 301 can facilitate the connection and fixation of the connecting pipe 801 and the connecting pipe 5 with the reaction tank 1 and the coil 2 when producing the crystallization tank. The cover plate 302 is used to seal the corresponding part of the mounting hole 301. A detachable filter screen 9 is provided inside the connecting pipe 801 at the bottom of the liquid level gauge 8. The filter screen 9 is used to intercept solid substances in the material to prevent affecting the display of the liquid level gauge 8. The filter screen 9 is detachable so that it is easy to replace and maintain;

[0025] A scraper 10 is fixedly connected to the connection pipe 801 below the liquid level gauge 8 along the radial direction, and a fixed frame 11 for installing a filter screen 9 is movably connected to the connection pipe 801. The filter screen 9 is located between the fixed frame 11 and the scraper 10 and is located on the side of the liquid level gauge 8 close to the housing 3. The solid matter in the material is intercepted by the filter screen 9 to prevent it from entering the vertical pipe of the liquid level gauge 8, so that the liquid level gauge 8 is easy to clean when cleaning the reaction tank 1.

[0026] A pull rod 12 is fixedly connected to the side of the fixed frame 11 away from the filter 9, and an end cover 802 installed at the open position of the end of the connecting pipe 801 is movably sleeved on the surface of the pull rod 12. A straight handle 13 is fixedly connected to the end of the pull rod 12 located outside the connecting pipe 801. The straight handle 13 can drive the pull rod 12, the fixed frame 11 and the filter 9 to move and rotate left and right. The filter 9 is driven to rotate and scrape on the surface of the scraper 10 by the straight handle 13 to clean the solid matter in the material attached to the surface of the filter 9. A limit card 14 for movably engaging the straight handle 13 is fixedly connected to the end cover 802, and the horizontal distance between the filter 9 and the liquid level meter 8 is less than the width of the limit card 14. The limit card 14 limits the maximum distance of the filter 9 moving to the right by blocking the straight handle 13.

[0027] Working principle: Turn the handle 13 to make it fit into the limit card 14, push the handle 13 to the left, drive the filter 9 to contact the scraper 10 through the pull rod 12 and the fixed frame 11, and move the handle 13 to the left to the leftmost side of the limit card 14;

[0028] The material is contained in the reaction tank 1, and the valves 7 on all the connecting pipes 5 are closed. The condensing agent enters the coil 2 from the bottom conveying pipe 4. The liquid level of the material inside the reaction tank 1 is identified by the liquid level meter 8. The valve 7 on the connecting pipe 5 closest to the liquid level is opened, so that the condensing agent flows only from the coil 2 at the corresponding position of the material. The condensing agent flows out from the reflux pipe 6 to the cooling device. The condensing agent circulates to achieve cooling, avoiding the circulation of the excess part of the upper coil 2, so that the reflux distance of the condensing agent is shorter, the reflux time is shorter, the cooling is faster, and the energy consumption required for the flow is lower;

[0029] After the material is added to the reaction tank 1, the flat handle 13 moves to the right to the middle or right side of the limit card 14, indicating that there is solid matter blocking the filter screen 9 in the reaction tank 1. The filter screen 9 will be driven to move to the right only when it is under pressure. At this time, the liquid level of the material in the reaction tank 1 is greater than the liquid level in the liquid level gauge 8. The flat handle 13 can be twisted to make the filter screen 9 rotate on the surface of the scraper 10 to scrape and clean the solid matter in the material attached to the surface of the filter screen 9. After the crystallization of the material in the tank is completed, the end cover 802 should be removed in time to thoroughly clean the filter screen 9.

[0030] It should be noted that, in this article, terms such as "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0031] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A material cooling crystallization tank, comprising a reaction tank (1), a coil (2) spirally wound around the outside of the reaction tank (1), and a housing (3) mounted outside the reaction tank (1) and the coil (2), characterized in that: A delivery pipe (4) connected to the bottom end of the coil (2) is installed at the bottom of the shell (3); a plurality of connecting pipes (5) connected to the coil (2) at corresponding positions inside are installed at equal intervals in the vertical direction on one side of the shell (3); the connecting pipes (5) are connected to the return pipe (6) and a valve (7) is installed on the connecting pipe (5); A liquid level gauge (8) is vertically mounted on one side of the housing (3) near the connecting pipe (5); the connecting pipes (801) at the top and bottom of the liquid level gauge (8) both penetrate the housing (3) and are connected to the interior of the reaction tank (1); a detachable filter screen (9) is disposed inside the connecting pipe (801) at the bottom of the liquid level gauge (8).

2. A material cooling crystallization tank according to claim 1, characterized in that: The housing (3) is provided with mounting holes (301) at positions corresponding to the connecting pipe (5) and the connecting pipe (801), and the surfaces of the connecting pipe (801) and the connecting pipe (5) are sleeved with cover plates (302) fixedly mounted on the outer wall of the housing (3).

3. A material cooling crystallization tank according to claim 1, characterized in that: A scraper (10) is fixedly connected to the interior of the connecting pipe (801) below the liquid level meter (8) in a radial direction, and a fixed frame (11) for mounting a filter screen (9) is movably connected to the interior of the connecting pipe (801), wherein the filter screen (9) is located between the fixed frame (11) and the scraper (10) and is located on a side of the liquid level meter (8) close to the housing (3).

4. A material cooling crystallization tank according to claim 3, characterized in that: A pull rod (12) is fixedly connected to the side of the fixed frame (11) away from the filter screen (9), and an end cover (802) installed at an open position at the end of the connecting pipe (801) is movably sleeved on the surface of the pull rod (12).

5. A material cooling crystallization tank according to claim 4, characterized in that: One end of the pull rod (12) located outside the connecting pipe (801) is fixedly connected to a flat handle (13), and a limit card (14) for movably engaging the flat handle (13) is fixedly connected to the end cover (802), and the horizontal distance between the filter screen (9) and the liquid level meter (8) is smaller than the width of the limit card (14).

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