A crystallization kettle for preparing 2,6-dihydroxybenzoic acid with convenient material discharge

Abstract

The utility model relates to the technical field of crystallization kettles, and proposes a 2,6-dihydroxybenzoic acid preparation crystallization kettle that is convenient for unloading, including a crystallizer body, an outer plate and a cooling water tank, the outer plate is fixed on the outside of the crystallizer body, the cooling water tank is installed on the outer plate, the dispersed feed assembly is arranged on the top of the crystallizer body, the cooling crystallization assembly is arranged in the crystallizer body and the cooling water tank, the discharging assembly is arranged at the bottom of the crystallizer body, the driving motor is arranged on the top of the crystallizer body, a pair of cavities are provided inside the inner wall of the crystallizer body, and a plurality of interconnected through cavities are provided between the inner cavities, and a pair of transverse pipes are provided at the upper and lower parts of the inner wall of the crystallizer body. Through the above technical scheme, the feeding speed in the related art is solved to be slow, and the discharging pipe is arranged at the bottom, the material is piled in the discharging pipe, and it cannot be stirred, resulting in incomplete reaction, and the discharging pipe is relatively small, and it is easy to be blocked during unloading, resulting in the problem of difficulty in unloading.

Description

Technical Field

[0001] The utility model relates to the technical field of crystallization kettles, and specifically relates to a crystallization kettle for preparing 2,6-dihydroxybenzoic acid which is convenient for unloading. Background Art

[0002] In the preparation process of 2,6-dihydroxybenzoic acid, a crystallization kettle is needed. The crystallization kettle is a crystallization equipment that requires chilled water or refrigerant water to rapidly cool down the interlayer after the material mixing reaction. The key links are the size of the interlayer area, the structure of the agitator and the material outlet form, high-precision polishing inside the tank, and the requirement of no dead angle in the tank cleaning to meet the process conditions.

[0003] The feed port of the existing crystallization kettle is arranged at the top, next to the stirring device. The opening size of the feed port is small, the feeding speed is slow, and the discharge pipe is arranged at the bottom. When the material reacts, the material piles up in the discharge pipe and cannot be stirred, resulting in incomplete reaction. At the same time, the discharge pipe is small and is easily blocked during unloading, resulting in difficulty in unloading.

[0004] Therefore, improvements are made to address the above problems. Utility Model Content

[0005] The utility model provides a crystallization kettle for preparing 2,6-dihydroxybenzoic acid which is convenient for unloading, and solves the problems in the related art that the feeding speed is slow, the discharge pipe is arranged at the bottom, when the materials react, the materials are piled in the discharge pipe and cannot be stirred, resulting in incomplete reaction, and at the same time, the discharge pipe is small and is easily blocked during unloading, resulting in difficulty in unloading.

[0006] The technical solution of the utility model is as follows:

[0007] A crystallizer body, an outer plate and a cooling water tank, wherein the outer plate is fixed to the outside of the crystallizer body and the cooling water tank is mounted on the outer plate;

[0008] A dispersed feed assembly, wherein the dispersed feed assembly is arranged on the top of the crystallization tank body;

[0009] A cooling crystallization component, which is arranged in the crystallization tank body and the cooling water tank;

[0010] A discharging assembly, the discharging assembly being arranged at the bottom of the crystallization tank body;

[0011] The cooling crystallization component includes a driving motor, which is installed on the top of the crystallization tank body. A pair of inner cavities are opened inside the inner wall of the crystallization tank body, and a plurality of interconnected through cavities are opened between the inner cavities. A pair of horizontal pipes are arranged on the upper and lower parts of the inner wall of the crystallization tank body.

[0012] As a further technical solution, the transverse pipe is connected to the inner cavity, a connecting cover is connected between the transverse pipes, a hollow tube is sealingly and rotatably connected inside the connecting cover, the top of the hollow tube is connected to the output end of the drive motor, and a plurality of through holes are opened around the surface of the hollow tube.

[0013] As a further technical solution, a plurality of dispersion pipes are arranged on the outer surface of the hollow tube, a plurality of stirring pipes are arranged at the bottom of the hollow tube, a circulating pump is installed on the top of the cooling water tank, and the inner cavity is respectively connected with the circulating pump and the cooling water tank.

[0014] As a further technical solution, the dispersed feeding assembly includes a plurality of diversion pipes, the diversion pipes are connected to the top of the crystallization tank body, a feeding hopper is arranged on the top of the diversion pipe, and a conveying pipe is arranged on the top of the feeding hopper.

[0015] As a further technical solution, the discharging assembly includes a bottom pipe, which is arranged at the bottom of the crystallization tank body. A telescopic cylinder is fixed to the bottom of the crystallization tank body, and an extension rod is arranged at the output end of the telescopic cylinder.

[0016] As a further technical solution, one end of the extension rod is located inside the bottom pipe, a blocking block is fixedly connected to the upper end of the extension rod, and a discharge pipe is provided at one side of the bottom pipe.

[0017] As a further technical solution, the upper end surface of the blocking block is a conical inclined structural surface.

[0018] As a further technical solution, the dispersed pipes are evenly distributed around the surface of the central pipe, and a plurality of the dispersed pipes are inclined upward in an umbrella shape.

[0019] As a further technical solution, the central part of the bottom of the feeding hopper protrudes upward, and the connection between the diversion pipe and the feeding hopper is located around the outer periphery of the inner protruding part.

[0020] As a further technical solution, the bottom of the crystallization tank body is an inclined structure, and the inclination angle of the stirring tube is the same as the inclination angle of the bottom of the crystallization tank body.

[0021] The working principle and beneficial effects of the utility model are:

[0022] 1. The utility model is provided with a cooling crystallization component. Through the interaction of structures such as a driving motor, an inner cavity, a transverse pipe, a hollow pipe, a through hole, a dispersion pipe, a stirring pipe and a circulation pump, all the rotating parts inside can be kept in a low-temperature state, and the dispersed and fallen materials can be quickly stirred, the efficiency of temperature reduction can be accelerated, the crystallization effect can be improved, and there will be no accumulation after crystallization, and continuous stirring and dispersion can be performed to facilitate subsequent discharge.

[0023] 2. The utility model is provided with a dispersed feeding assembly, through the interaction of the diversion pipe, the feeding hopper and the conveying pipe and other structures, the incoming material can be evenly dispersed and discharged from the top to the bottom, thereby improving the feeding and crystallization effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0025] Figure 1 It is a schematic diagram of the structure of the utility model;

[0026] Figure 2 This is the axonometric drawing of the utility model;

[0027] Figure 3 This is an axonometric sectional view of the utility model;

[0028] Figure 4 For the utility model Figure 3 A partial enlarged view of part A;

[0029] In the figure: 1. Crystallization tank body; 2. Outer plate; 3. Cooling water tank; 4. Cooling crystallization component; 4-1. Driving motor; 4-2. Inner cavity; 4-3. Through cavity; 4-4. Horizontal pipe; 4-5. Connecting cover; 4-6. Hollow pipe; 4-7. Through hole; 4-8. Dispersing pipe; 4-9. Agitation pipe; 4-10. Circulation pump; 5. Dispersing feed component; 5-1. Diversion pipe; 5-2. Feed hopper; 5-3. Conveying pipe; 6. Discharging component; 6-1. Bottom pipe; 6-2. Telescopic cylinder; 6-3. Extension rod; 6-4. Blocking block; 6-5. Discharging pipe. DETAILED DESCRIPTION

[0030] The following will be combined with 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 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.

[0031] like Figure 1~Figure 4 As shown, this embodiment provides a crystallization kettle for preparing 2,6-dihydroxybenzoic acid which is convenient for unloading, comprising

[0032] A crystallization tank body 1, an outer plate 2 and a cooling water tank 3, wherein the outer plate 2 is fixed to the outside of the crystallization tank body 1, and the cooling water tank 3 is installed on the outer plate 2;

[0033] A dispersed feed assembly 5, which is arranged on the top of the crystallization tank body 1;

[0034] A cooling crystallization component 4 is arranged in the crystallization tank body 1 and the cooling water tank 3;

[0035] A discharging assembly 6 is arranged at the bottom of the crystallization tank body 1;

[0036] The cooling crystallization component 4 comprises a driving motor 4-1, which is mounted on the top of the crystallizer body 1. A pair of inner cavities 4-2 are provided inside the inner wall of the crystallizer body 1, and a plurality of interconnected through cavities 4-3 are provided between the inner cavities 4-2. A pair of transverse pipes 4-4 are provided at the upper and lower parts of the inner wall of the crystallizer body 1, and the transverse pipes 4-4 are connected to the inner cavity 4-2. A connecting cover 4-5 is connected between the transverse pipes 4-4, and a hollow pipe 4-6 is connected in a sealed and rotatable manner in the connecting cover 4-5. The top of the hollow pipe 4-6 is connected to the output end of the driving motor 4-1, and a plurality of through holes 4-7 are provided around the surface of the hollow pipe 4-6. The outer surface of the hollow pipe 4-6 is provided with a plurality of dispersion pipes 4-8, and a plurality of stirring pipes 4-9 are provided at the bottom of the hollow pipe 4-6. A circulating pump 4-10 is installed on the top of the cooling water tank 3, and the inner cavity 4-2 is respectively connected to the circulating pump 4-10 and the cooling water tank 3.

[0037] In the present embodiment, in order to realize rapid cooling of the incoming material to achieve a crystallized and uniform state, a cooling crystallization assembly 4 is designed, a driving motor 4-1 is installed on the top of the crystallizer body 1, two inner cavities 4-2 surrounding the crystallizer body 1 are provided inside the inner wall of the crystallizer body 1, and a plurality of through cavities 4-3 are connected between the two inner cavities 4-2 so that the cooled liquid can flow inside, and two transverse pipes 4-4 are provided on the upper and lower parts of the crystallizer body 1, and a circular connecting cover 4 is connected between the transverse pipes 4-4. -5, a hollow tube 4-6 is rotated inside the two connecting covers 4-5 and the upper end is connected to the output end of the driving motor 4-1, and a plurality of through holes 4-7 are provided on the surface of the part where the hollow tube 4-6 is connected to the connecting cover 4-5. After the liquid enters, it can flow into the hollow tube 4-6 and flow inside. A plurality of dispersion pipes 4-8 and stirring pipes 4-9 are provided on the outer surface of the hollow tube 4-6. Cooling liquid also enters into the dispersion pipes 4-8 and the stirring pipes 4-9. When rotating, the low temperature can be quickly transferred to the material to achieve the effect of crystallization.

[0038] Furthermore, the dispersed feed assembly 5 includes a plurality of branch pipes 5-1, the branch pipes 5-1 are connected to the top of the crystallization tank body 1, a feeding hopper 5-2 is arranged on the top of the branch pipe 5-1, and a conveying pipe 5-3 is arranged on the top of the feeding hopper 5-2.

[0039] In the present embodiment, in order to achieve the effect of dispersing the material to accelerate crystallization, a dispersed feeding assembly 5 is designed, and a plurality of shunt pipes 5-1 are arranged on the top of the crystallizer body 1, and a feeding hopper 5-2 for feeding materials is connected to the upper end of the shunt pipe 5-1. After the material enters, it is dispersed into the crystallizer body 1 through the shunt pipe 5-1, and a conveying pipe 5-3 is arranged on the top of the feeding hopper 5-2, and the conveying pipe 5-3 can be connected to a feeding device for feeding.

[0040] Furthermore, the discharging component 6 includes a bottom pipe 6-1, which is arranged at the bottom of the crystallization tank body 1, and a telescopic cylinder 6-2 is fixed to the bottom of the crystallization tank body 1. An extension rod 6-3 is arranged at the output end of the telescopic cylinder 6-2, and one end of the extension rod 6-3 is located inside the bottom pipe 6-1. A blocking block 6-4 is fixedly connected to the upper end of the extension rod 6-3, and a discharging pipe 6-5 is arranged on one side of the bottom pipe 6-1.

[0041] In this embodiment, in order to achieve the effect of rapid discharging, a discharging component 6 is designed, a bottom pipe 6-1 is arranged at the bottom of the crystallization tank body 1, and a telescopic cylinder 6-2 is arranged on the other side, the output end of the telescopic cylinder 6-2 is connected to an extension rod 6-3 and extends into the bottom pipe 6-1, a blocking block 6-4 is arranged at the upper end of the extension rod 6-3 to block the bottom pipe 6-1, and a discharging pipe 6-5 is arranged on one side of the bottom pipe 6-1, and the telescopic cylinder 6-2 can be started to move the blocking block 6-4 downward, so that the material can be quickly discharged through the discharging pipe 6-5.

[0042] Furthermore, the upper end surface of the blocking block 6-4 is a conical inclined structural surface.

[0043] In this embodiment, the conical structural surface allows the material to be quickly discharged from the discharge pipe 6-5, and the material can be repeatedly moved up and down during discharge without causing discharge blockage.

[0044] Furthermore, the dispersion pipes 4-8 are evenly distributed around the surface of the central pipe, and a number of the dispersion pipes 4-8 are inclined upward in an umbrella shape.

[0045] In this embodiment, the umbrella-shaped distribution structure of the plurality of dispersion pipes 4 - 8 is used to achieve a better contact effect between the falling material and the dispersion pipes 4 - 8 , and a higher cooling efficiency.

[0046] Furthermore, the center portion of the bottom of the feeding hopper 5-2 is bulged upward, and the connection between the diversion pipe 5-1 and the feeding hopper 5-2 is located around the periphery of the inner bulged portion.

[0047] In this embodiment, the material is dispersed to the outside through the raised portion, so as to be fully discharged downward through the diversion pipe 5-1.

[0048] Furthermore, the bottom of the crystallization tank body 1 is an inclined structure, and the inclination angle of the stirring tubes 4-9 is the same as the inclination angle of the bottom of the crystallization tank body 1.

[0049] In this embodiment, the inclined structure allows the material to be concentrated at the bottom of the crystallization tank body 1, making it easier for the material to be dispersed by the stirring tubes 4-9, while achieving a better discharging effect.

[0050] When crystallization treatment is required, the conveying pipeline 5-3 is connected to the feeding equipment, the material enters the feeding hopper 5-2, and is dispersed downward through the diversion pipeline 5-1. The driving motor 4-1 is started, and the hollow tube 4-6 is controlled to make the dispersion pipeline 4-8 and the stirring tube 4-9 start to rotate. At the same time, the circulating pump 4-10 continuously circulates the low-temperature liquid in the cooling water tank 3 in the inner cavity 4-2, the through cavity 4-3, the transverse pipeline 4-4, the flow finder, the hollow tube 4-6 and the dispersion pipeline 4-8, and the falling material is stirred under the state of maintaining low temperature, and crystallized at the bottom of the crystallization tank body 1. When discharging after crystallization is completed, the telescopic cylinder 6-2 is started, the blocking block 6-4 is controlled to move downward, and the discharge pipeline 6-5 is opened to start discharging.

[0051] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A crystallization kettle for preparing 2,6-dihydroxybenzoic acid which is convenient for unloading, characterized in that: include A crystallization tank body (1), an outer plate (2) and a cooling water tank (3), wherein the outer plate (2) is fixed to the outside of the crystallization tank body (1), and the cooling water tank (3) is installed on the outer plate (2); A dispersed feeding assembly (5), wherein the dispersed feeding assembly (5) is arranged on the top of the crystallization tank body (1); A cooling crystallization component (4), wherein the cooling crystallization component (4) is arranged in the crystallization tank body (1) and the cooling water tank (3); A discharging assembly (6), wherein the discharging assembly (6) is arranged at the bottom of the crystallization tank body (1); The cooling crystallization component (4) comprises a driving motor (4-1), wherein the driving motor (4-1) is mounted on the top of the crystallization tank body (1), wherein a pair of inner cavities (4-2) are provided inside the inner wall of the crystallization tank body (1), wherein a plurality of interconnected through cavities (4-3) are provided between the inner cavities (4-2), and a pair of transverse pipes (4-4) are provided on both the upper and lower parts of the inner wall of the crystallization tank body (1).

2. A crystallization kettle for preparing 2,6-dihydroxybenzoic acid that is easy to discharge according to claim 1, characterized in that: The transverse pipe (4-4) is in communication with the inner cavity (4-2); a connecting cover (4-5) is connected between the transverse pipes (4-4); a hollow pipe (4-6) is sealingly and rotatably connected inside the connecting cover (4-5); the top of the hollow pipe (4-6) is connected to the output end of the drive motor (4-1); and a plurality of through holes (4-7) are formed around the surface of the hollow pipe (4-6).

3. A crystallization kettle for preparing 2,6-dihydroxybenzoic acid that is easy to unload according to claim 2, characterized in that: The outer surface of the hollow tube (4-6) is provided with a plurality of dispersion pipes (4-8), the bottom of the hollow tube (4-6) is provided with a plurality of stirring tubes (4-9), a circulation pump (4-10) is installed on the top of the cooling water tank (3), and the inner cavity (4-2) is respectively connected to the circulation pump (4-10) and the cooling water tank (3).

4. The crystallization kettle for preparing 2,6-dihydroxybenzoic acid which is convenient for unloading according to claim 1, characterized in that: The dispersed feeding assembly (5) comprises a plurality of branch pipes (5-1), wherein the branch pipes (5-1) are connected to the top of the crystallization tank body (1), a feeding hopper (5-2) is arranged on the top of the branch pipes (5-1), and a conveying pipe (5-3) is arranged on the top of the feeding hopper (5-2).

5. The crystallization kettle for preparing 2,6-dihydroxybenzoic acid which is convenient for unloading according to claim 1, characterized in that: The discharging assembly (6) comprises a bottom pipe (6-1), the bottom pipe (6-1) is arranged at the bottom of the crystallization tank body (1), a telescopic cylinder (6-2) is fixed to the bottom of the crystallization tank body (1), and an extension rod (6-3) is arranged at the output end of the telescopic cylinder (6-2).

6. A crystallization kettle for preparing 2,6-dihydroxybenzoic acid that is easy to discharge according to claim 5, characterized in that: One end of the extension rod (6-3) is located inside the bottom pipe (6-1), the upper end of the extension rod (6-3) is fixedly connected to a blocking block (6-4), and a discharge pipe (6-5) is provided on one side of the bottom pipe (6-1).

7. A crystallization kettle for preparing 2,6-dihydroxybenzoic acid that is easy to discharge according to claim 6, characterized in that: The upper end surface of the blocking block (6-4) is a conical inclined structural surface.

8. The crystallization kettle for preparing 2,6-dihydroxybenzoic acid which is convenient for unloading according to claim 3, characterized in that: The dispersion pipes (4-8) are evenly distributed around the surface of the central pipe, and a plurality of the dispersion pipes (4-8) are inclined upward in an umbrella shape.

9. The crystallization kettle for preparing 2,6-dihydroxybenzoic acid which is convenient for unloading according to claim 4, characterized in that: The center part of the bottom of the feeding hopper (5-2) is protruding upwards, and the connection between the diversion pipe (5-1) and the feeding hopper (5-2) is located around the periphery of the inner protruding part.

10. The crystallization kettle for preparing 2,6-dihydroxybenzoic acid which is convenient for unloading according to claim 3, characterized in that: The bottom of the crystallization tank body (1) is an inclined structure, and the inclination angle of the stirring tube (4-9) is the same as the inclination angle of the bottom of the crystallization tank body (1).

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