Citric acid crystallization reaction kettle

Abstract

The utility model discloses a citric acid crystallization reaction kettle, and relates to the technical field of citric acid crystallization reaction kettles, the citric acid crystallization reaction kettle comprises a reaction kettle, a feed pipe and a discharge pipe, the inner surface of the reaction kettle is provided with a stirring mechanism and a heating mechanism, and the heating mechanism is located on the surface of the stirring mechanism; the stirring mechanism comprises a stirring part and a rotating part; the rotating part is positioned below the stirring part. Through the arrangement of the stirring mechanism, the stirring part stirs a solution in the reaction kettle, so that the liquid in the reaction kettle is mixed more uniformly, meanwhile, the inner wall of the reaction kettle is cleaned by a scraper, and waste caused by the fact that citric acid is attached to the inner wall of the reaction kettle after crystallization is avoided; the surface of the reaction kettle is uniformly heated, a solution in the reaction kettle is conveniently and uniformly heated, the solution in the reaction kettle can be stirred again, the crystallization time of citric acid in the reaction kettle is shortened, and the crystallization efficiency of the reaction kettle on the citric acid is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of citric acid crystallization reaction kettles, in particular to a citric acid crystallization reaction kettle. Background Art

[0002] Citric acid, also known as citric acid, is an important organic acid. It is a colorless crystal, odorless, has a strong sour taste, is easily soluble in water, and is an acidity regulator and food additive. When citric acid is produced, it is necessary to perform a crystallization operation in the reactor of its solution.

[0003] During the crystallization process of citric acid, the reactor needs to be heated several times. At present, most existing reactors are heated by heating the bottom of the reactor and heating the liquid inside through the heat transfer principle. Although this heating method is relatively convenient, the reactor cannot rotate, resulting in uneven heating of the liquid in the reactor. At the same time, the crystallization time of citric acid in the reactor is increased, affecting the production efficiency of citric acid. Therefore, a citric acid crystallization reactor is proposed. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a citric acid crystallization reactor, which solves the problem that uneven heating of the liquid in the reactor causes an increase in the crystallization time of citric acid in the reactor and affects the production efficiency of citric acid.

[0005] To achieve the above purpose, the utility model is implemented by the following technical scheme: a citric acid crystallization reactor, comprising a reactor, a feed pipe and a discharge pipe, wherein a stirring mechanism and a heating mechanism are arranged on the inner surface of the reactor, and the heating mechanism is located on the surface of the stirring mechanism;

[0006] The stirring mechanism comprises a stirring part and a rotating part;

[0007] The rotating part is located below the stirring part;

[0008] The stirring part comprises a first motor, the bottom surface of which is fixedly connected to the top surface of the reaction kettle, and a first rotating rod, a connecting rod, a stirring rod and a scraper are arranged inside the reaction kettle;

[0009] The rotating part includes an insulation box, the bottom end surface of the reactor passes through the top surface of the insulation box and extends to the inside of the insulation box, the bottom surface of the insulation box is fixedly connected to a second motor, the bottom end surface of an output rod of the second motor is fixedly connected to a rotating shaft, a first gear is fixedly sleeved on the surface of the rotating shaft, a second rotating rod is arranged on the left side of the second motor, a second gear is fixedly sleeved on the surface of the second rotating rod, four support rods are arranged under the reactor, and a slide groove is opened through the bottom surface of the insulation box.

[0010] Preferably, the bottom end surface of the first motor output rod passes through the top surface of the reactor and extends into the interior of the reactor. The bottom end surface of the first motor output rod is fixedly connected to the top surface of the first rotating rod. The bottom end surface of the first rotating rod is rotatably connected to the bottom surface of the reactor through the second bearing seat. The first motor provides power for the rotation of the first rotating rod.

[0011] Preferably, the surface of the first rotating rod is fixedly connected to the inner end surface of the connecting rod, the top surface of the stirring rod is fixedly connected to the bottom surface of the connecting rod, the outer end surface of the connecting rod is fixedly connected to the inner side surface of the scraper, and the outer side surface of the scraper is slidably connected to the inner wall of the reactor, so that the scraper can clean the inner wall of the reactor.

[0012] Preferably, the side surface of the first gear is meshed with the side surface of the second gear, the top end surface of the second rotating rod passes through the bottom surface of the insulation box and extends into the interior of the insulation box, the top end surface of the second rotating rod is fixedly connected to the bottom surface of the reactor, the surface of the second rotating rod is rotatably connected to the inner wall of the insulation box through a third bearing seat, and the reactor is driven to rotate by the second rotating rod.

[0013] Preferably, the top ends of the four support rods are fixedly connected to the bottom surface of the reactor, and the bottom ends of the support rods slide through the bottom surface of the insulation box and the inner wall of the slide groove to extend into the slide groove, so that the support rods improve the stability of the reactor during rotation.

[0014] Preferably, the bottom end face of the feed pipe is fixedly passed through the top surface of the reactor and extends into the reactor, the bottom end face of the discharge pipe is fixedly passed through the bottom surface of the reactor and extends into the reactor, a first valve is arranged inside the discharge pipe, and the feed pipe facilitates adding solution into the reactor.

[0015] Preferably, four supporting legs are fixedly connected to the bottom surface of the insulation box, and an insulation box door is hinged on the front of the insulation box. The supporting legs support the insulation box, and the crystallized citric acid can be easily discharged from the discharge pipe through the insulation box door.

[0016] Preferably, the heating mechanism includes a hot air blower, the left side of the hot air blower is fixedly connected to the right side of the insulation box, the left end face of the hot air blower air outlet duct is fixedly passed through the right side of the insulation box and extends to the inside of the insulation box, the hot air blower air outlet duct is located on the right side of the reactor, an air outlet duct is provided on the left side of the reactor, the left end face of the air outlet duct is fixedly passed through the left side of the inside of the insulation box and extends to the left side of the insulation box, a second valve is provided inside the air outlet duct, and the second valve can control the air outlet duct for ventilation and heat dissipation.

[0017] Beneficial Effects

[0018] The utility model provides a citric acid crystallization reactor. Compared with the prior art, it has the following beneficial effects:

[0019] (1) The citric acid crystallization reactor is provided with a stirring mechanism. The stirring part stirs the solution inside the reactor, so that the liquid inside the reactor is mixed more evenly. At the same time, the scraper cleans the inner wall of the reactor to avoid the waste caused by the adhesion of citric acid to the inner wall of the reactor after crystallization. The rotating part drives the reactor to rotate, so as to achieve uniform heating of the surface of the reactor, facilitate uniform heating of the solution inside the reactor, and stir the solution in the reactor again, thereby reducing the crystallization time of citric acid in the reactor and improving the crystallization efficiency of citric acid in the reactor.

[0020] (2) The citric acid crystallization reactor can adjust the temperature inside the insulated box by setting a heating mechanism, thereby heating the reactor to facilitate the subsequent crystallization of citric acid in the reactor. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a front cutaway stereoscopic view of the reaction kettle of the utility model;

[0022] Figure 2 This is a main view of the utility model;

[0023] Figure 3 This is a rear perspective view of the utility model;

[0024] Figure 4 This is a front cutaway perspective view of the thermal insulation box of the utility model;

[0025] Figure 5 It is a partial front cutaway stereoscopic view of the reaction kettle of the utility model.

[0026] In the figure: reactor 1, stirring mechanism 2, first motor 201, first rotating rod 202, connecting rod 203, stirring rod 204, scraper 205, insulation box 206, second motor 207, first gear 208, second rotating rod 209, second gear 210, support rod 211, feed pipe 3, discharge pipe 4, support leg 5, heating mechanism 6, hot air blower 601, outlet pipe 602. DETAILED DESCRIPTION

[0027] 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.

[0028] See also Figure 1-Figure 5 The utility model provides two technical solutions, which specifically include the following embodiments:

[0029] Embodiment 1:

[0030] A citric acid crystallization reactor, comprising a reactor 1, a feed pipe 3 and a discharge pipe 4, wherein a stirring mechanism 2 and a heating mechanism 6 are arranged on the inner surface of the reactor 1, and the heating mechanism 6 is located on the surface of the stirring mechanism 2;

[0031] The stirring mechanism 2 includes a stirring part and a rotating part;

[0032] The rotating part is located below the stirring part;

[0033] The stirring part includes a first motor 201, the bottom surface of the first motor 201 is fixedly connected to the top surface of the reactor 1, and the reactor 1 is provided with a first rotating rod 202, a connecting rod 203, a stirring rod 204 and a scraper 205;

[0034] The rotating part includes an insulation box 206, the bottom end surface of the reactor 1 passes through the top surface of the insulation box 206 and extends to the inside of the insulation box 206, the bottom surface of the insulation box 206 is fixedly connected to the second motor 207, the bottom end surface of the output rod of the second motor 207 is fixedly connected to the rotating shaft, the surface of the rotating shaft is fixedly sleeved with a first gear 208, a second rotating rod 209 is arranged on the left side of the second motor 207, and a second gear 210 is fixedly sleeved on the surface of the second rotating rod 209, four support rods 211 are arranged below the reactor 1, a slide groove is opened through the bottom surface of the inside of the insulation box 206, the bottom end surface of the output rod of the first motor 201 passes through the top surface of the reactor 1 and extends to the inside of the reactor 1, the bottom end surface of the output rod of the first motor 201 is fixedly connected to the top surface of the first rotating rod 202, and the bottom end surface of the first rotating rod 202 is connected to the inside of the reactor 1 through the second bearing seat The bottom surface is rotatably connected, the surface of the first rotating rod 202 is fixedly connected to the inner end surface of the connecting rod 203, the top surface of the stirring rod 204 is fixedly connected to the bottom surface of the connecting rod 203, the outer end surface of the connecting rod 203 is fixedly connected to the inner side surface of the scraper 205, the outer side surface of the scraper 205 is slidably connected to the inner wall of the reactor 1, the side surface of the first gear 208 is meshed with the side surface of the second gear 210, the top end surface of the second rotating rod 209 penetrates the bottom surface of the insulation box 206 and extends to the inside of the insulation box 206, the top end surface of the second rotating rod 209 is fixedly connected to the bottom surface of the reactor 1, the surface of the second rotating rod 209 is rotatably connected to the inner wall of the insulation box 206 through the third bearing seat, the top ends of the four support rods 211 are all fixedly connected to the bottom surface of the reactor 1, and the bottom end surfaces of the support rods 211 slide through the inner bottom surface of the insulation box 206 and the inner wall of the slide groove and extend to the inside of the slide groove.

[0035] The bottom end face of the feed pipe 3 is fixedly passed through the top surface of the reactor 1 and extends to the inside of the reactor 1 . The bottom end face of the discharge pipe 4 is fixedly passed through the bottom surface of the reactor 1 and extends to the inside of the reactor 1 . A first valve is arranged inside the discharge pipe 4 .

[0036] Four supporting legs 5 are fixedly connected to the bottom surface of the heat preservation box 206, and a heat preservation box door is hinged on the front surface of the heat preservation box 206.

[0037] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0038] When working, first close the first valve, pour the solution into the reactor 1 through the feed pipe 3, turn on the first motor 201, the output rod of the first motor 201 drives the connected first rotating rod 202 to rotate, the first rotating rod 202 drives the connected stirring rod 204 and the scraper 205 to rotate, the stirring rod 204 stirs and mixes the solution inside the reactor 1, and the scraper 205 cleans the solution attached to the inner wall of the reactor 1; turn on the second motor 207, the output rod of the second motor 207 drives the connected rotating shaft to rotate, the rotating shaft drives the connected first gear 208 to rotate, the first gear 208 drives the second gear 210 to rotate, so that The second gear 210 drives the connected second rotating rod 209 to rotate, and the second rotating rod 209 drives the connected reactor 1 to rotate, and the reactor 1 drives the connected support rod 211 to slide inside the slide groove, so as to evenly heat the reactor 1; open the second valve, close the insulation box door, turn on the hot air blower 601, and the hot air blower 601 passes hot air into the insulation box 206, and the temperature in the insulation box 206 increases, so that the surface of the reactor 1 is heated, and the heat in the insulation box 206 is discharged through the outlet pipe 602; when citric acid crystallizes, open the insulation box door and the first valve, and the citric acid crystals in the reactor 1 are discharged through the discharge pipe 4.

[0039] By setting the stirring mechanism 2, the stirring part stirs the solution inside the reactor 1, so that the liquid inside the reactor 1 is mixed more evenly. At the same time, the scraper 205 cleans the inner wall of the reactor 1 to avoid citric acid adhering to the inner wall of the reactor 1 after crystallization and causing waste. The rotating part drives the reactor 1 to rotate, so as to achieve uniform heating of the surface of the reactor 1, which is convenient for uniform heating of the solution inside the reactor 1, and the solution in the reactor 1 can be stirred again, so as to reduce the crystallization time of citric acid in the reactor 1 and improve the crystallization efficiency of citric acid in the reactor.

[0040] Embodiment 2:

[0041] On the basis of the first embodiment, the heating mechanism 6 includes a hot air blower 601, the left side of the hot air blower 601 is fixedly connected to the right side of the heat preservation box 206, the left end face of the air outlet pipe of the hot air blower 601 is fixedly penetrated through the right side of the heat preservation box 206 and extends to the inside of the heat preservation box 206, the air outlet pipe of the hot air blower 601 is located on the right side of the reactor 1, and the left side of the reactor 1 is provided with an air outlet pipe 602, the left end face of the air outlet pipe 602 is fixedly penetrated through the left side of the inside of the heat preservation box 206 and extends to the left side of the heat preservation box 206, and a second valve is provided inside the air outlet pipe 602;

[0042] By setting the heating mechanism 6, the internal temperature of the heat preservation box 206 can be adjusted, so as to heat the reactor 1, which is convenient for the subsequent crystallization of citric acid in the reactor.

Claims

1. A citric acid crystallization reactor, comprising a reactor (1), a feed pipe (3) and a discharge pipe (4), characterized in that: The inner surface of the reaction kettle (1) is provided with a stirring mechanism (2) and a heating mechanism (6), and the heating mechanism (6) is located on the surface of the stirring mechanism (2); The stirring mechanism (2) comprises a stirring part and a rotating part; The rotating part is located below the stirring part; The stirring part comprises a first motor (201), the bottom surface of the first motor (201) is fixedly connected to the top surface of the reaction kettle (1), and the reaction kettle (1) is provided with a first rotating rod (202), a connecting rod (203), a stirring rod (204) and a scraper (205); The rotating part comprises an insulation box (206); the bottom end surface of the reaction kettle (1) passes through the top surface of the insulation box (206) and extends into the interior of the insulation box (206); the bottom surface of the insulation box (206) is fixedly connected with a second motor (207); the bottom end surface of an output rod of the second motor (207) is fixedly connected with a rotating shaft; a first gear (208) is fixedly sleeved on the surface of the rotating shaft; a second rotating rod (209) is arranged on the left side of the second motor (207); a second gear (210) is fixedly sleeved on the surface of the second rotating rod (209); four support rods (211) are arranged below the reaction kettle (1); and a slide groove is provided through the bottom surface of the interior of the insulation box (206).

2. A citric acid crystallization reactor according to claim 1, characterized in that: The bottom end surface of the output rod of the first motor (201) passes through the top surface of the reactor (1) and extends into the interior of the reactor (1); the bottom end surface of the output rod of the first motor (201) is fixedly connected to the top surface of the first rotating rod (202); and the bottom end surface of the first rotating rod (202) is rotatably connected to the bottom surface of the interior of the reactor (1) via a second bearing seat.

3. A citric acid crystallization reactor according to claim 1, characterized in that: The surface of the first rotating rod (202) is fixedly connected to the inner end surface of the connecting rod (203), the top surface of the stirring rod (204) is fixedly connected to the bottom surface of the connecting rod (203), the outer end surface of the connecting rod (203) is fixedly connected to the inner side surface of the scraper (205), and the outer side surface of the scraper (205) is slidably connected to the inner wall of the reaction kettle (1).

4. A citric acid crystallization reactor according to claim 1, characterized in that: The side surface of the first gear (208) is meshed with the side surface of the second gear (210); the top surface of the second rotating rod (209) passes through the bottom surface of the heat preservation box (206) and extends into the interior of the heat preservation box (206); the top surface of the second rotating rod (209) is fixedly connected to the bottom surface of the reaction kettle (1); and the surface of the second rotating rod (209) is rotatably connected to the inner wall of the heat preservation box (206) via a third bearing seat.

5. A citric acid crystallization reactor according to claim 1, characterized in that: The top ends of the four support rods (211) are fixedly connected to the bottom surface of the reaction kettle (1), and the bottom ends of the support rods (211) slide through the bottom surface of the insulation box (206) and the inner wall of the slide groove to extend into the interior of the slide groove.

6. A citric acid crystallization reactor according to claim 1, characterized in that: The bottom end surface of the feed pipe (3) is fixedly passed through the top surface of the reaction kettle (1) and extends into the interior of the reaction kettle (1); the bottom end surface of the discharge pipe (4) is fixedly passed through the bottom surface of the reaction kettle (1) and extends into the interior of the reaction kettle (1); a first valve is arranged inside the discharge pipe (4).

7. A citric acid crystallization reactor according to claim 5, characterized in that: Four supporting legs (5) are fixedly connected to the bottom surface of the thermal insulation box (206), and a thermal insulation box door is hingedly connected to the front surface of the thermal insulation box (206).

8. A citric acid crystallization reactor according to claim 1, characterized in that: The heating mechanism (6) comprises a hot air blower (601), the left side of the hot air blower (601) is fixedly connected to the right side of the heat preservation box (206), the left end face of the air outlet pipe of the hot air blower (601) is fixedly penetrated through the right side of the heat preservation box (206) and extends to the inside of the heat preservation box (206), the air outlet pipe of the hot air blower (601) is located on the right side of the reaction kettle (1), the left side of the reaction kettle (1) is provided with an air outlet pipe (602), the left end face of the air outlet pipe (602) is fixedly penetrated through the left side of the inside of the heat preservation box (206) and extends to the left side of the heat preservation box (206), and a second valve is provided inside the air outlet pipe (602).

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