Anti-caking device for baking soda production

Abstract

The utility model provides an anti-caking device for baking soda production, which comprises a material storage barrel, a crushing roller group, a feeding roller group, a feeding roller group, a feeding roller group, a feeding roller group, a feeding roller group and an anti-caking device, and is characterized in that the bottom of the material storage barrel is provided with a feeding opening; a feeding cavity, a screening cavity and a coarse material cavity are formed in the cooling screening barrel, the feeding cavity is communicated with the discharging opening, a spiral feeding rod transversely penetrates through the feeding cavity, the screening cavity and the coarse material cavity, a roller screen arranged outside the spiral feeding rod in a sleeving mode is arranged in the screening cavity, and a feeding hopper is arranged in the roller screen. A fine material outlet is formed in the bottom of the screening cavity, a coarse material outlet is formed in the bottom of the coarse material cavity, the spiral feeding rod is provided with an axial cold air channel, and a plurality of cold air holes are formed in the portion, located in the screening cavity, of the spiral feeding rod. One side of the top of the stirring barrel is communicated with the fine material outlet, an anti-blocking agent adding opening is formed in the other side of the top of the stirring barrel, stirring blades are arranged in the stirring barrel, and a finished product outlet is formed in one side of the bottom of the stirring barrel. According to the anti-caking device for baking soda production, the crushing and screening effects can be effectively improved, and the condition of product caking can be further reduced.

Description

Technical Field

[0001] This utility model relates to the field of food production equipment, specifically to a device for preventing caking in baking soda production. Background Technology

[0002] Clumping is a common technical problem in the production and transportation of baking soda. The causes of clumping include excessively fine crystal size, excessively high temperature during packaging after drying, and compaction during stacking after packaging. Among these, excessively high temperature after drying and failure to cool down and package immediately are the main causes of clumping.

[0003] To address the aforementioned technical problems, utility model patent CN222518781U discloses a device for preventing caking in baking soda production, comprising a cooling hopper, a conveying mechanism, and a cooling unit. A discharge pipe is provided at the bottom of the cooling hopper, and a sieve plate is installed at an incline inside the cooling hopper. A coarse material inlet is opened on one side wall of the cooling hopper corresponding to the lower end of the sieve plate. Cold air is blown out through multiple air outlets, contacting the powdered baking soda falling from the discharge pipe. This reduces the temperature of the powdered baking soda, preventing caking after packaging. Furthermore, the cold air disperses the powdered baking soda, causing it to fall onto the sieve plate, reducing accumulation and improving screening quality and efficiency. The cold air from the outlets also helps lumpy baking soda flow from the sieve plate to the coarse material inlet.

[0004] However, the above-mentioned utility model still has some technical defects: 1. The technical solution uses a serrated spiral blade for crushing, but most of the baking soda is conveyed between the spiral blades, resulting in poor crushing effect; 2. Although the technical solution uses cold air to blow away the baking soda, it can simultaneously achieve cooling and screening. However, the thrust of the cold air gradually decreases from the outlet to a distance, which may result in no baking soda being blown away by the cold air near the outlet and unable to pass through the sieve, while too much baking soda accumulates on the sieve plate far from the outlet, thus affecting the screening efficiency; 3. There is still a certain possibility of clumping after cooling. Utility Model Content

[0005] To overcome the shortcomings of existing technologies, this utility model provides a sodium bicarbonate production anti-caking device, which can effectively improve the crushing and screening effect and further reduce product agglomeration.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A device for preventing caking in baking soda production, comprising:

[0008] A storage cylinder, wherein a discharge port is provided at the bottom of the storage cylinder, and a crushing roller assembly is provided inside the discharge port;

[0009] A cooling screening cylinder is provided with a feeding chamber, a screening chamber and a coarse material chamber. The feeding chamber is connected to the discharge port. A spiral feeding rod is transversely connected to the feeding chamber, the screening chamber and the coarse material chamber. A drum screen is provided in the screening chamber and sleeved on the spiral feeding rod. A fine material outlet is provided at the bottom of the screening chamber and a coarse material outlet is provided at the bottom of the coarse material chamber. The spiral feeding rod is provided with an axial cooling air channel. The portion of the spiral feeding rod located in the screening chamber is provided with multiple cooling air holes.

[0010] The mixing drum has a top side connected to the fine material outlet and an anti-caking agent addition port on the other side. The mixing drum is equipped with mixing blades, and the bottom side of the mixing drum has a finished product outlet.

[0011] Furthermore, the storage cylinder has an S-shaped flow channel inside its side wall, the S-shaped flow channel is filled with refrigerant, and the S-shaped flow channel is connected to a heat exchanger located outside the storage cylinder.

[0012] Furthermore, the crushing roller assembly includes a motor, a driving roller, and a driven roller. The motor is connected to the driving roller. The driving roller is provided with a driving gear at its end, and the driven roller is provided with a driven gear. The driving gear meshes with the driven gear.

[0013] Furthermore, the surface of the driving roller is provided with a plurality of first protrusions, and the surface of the driven roller is provided with a plurality of second protrusions, the second protrusions being offset relative to the first protrusions.

[0014] Furthermore, the feed inlet is provided with a first cleaning brush that is in contact with the lower surface of the drive roller and a second cleaning brush that is in contact with the lower surface of the driven roller, and there is a feed gap between the first cleaning brush and the second cleaning brush.

[0015] Furthermore, the coarse material outlet is connected to a coarse material collection bucket, the coarse material collection bucket is connected to an elevator, and the elevator is connected to the storage cylinder.

[0016] Furthermore, the cold air channel is connected to a cold air source, the top of the screening chamber is provided with a cold air recovery port, the cold air recovery port is connected to a cold air recovery pipe, and the cold air recovery pipe is connected to the cold air source.

[0017] Furthermore, a filter screen is provided at the cold air recovery port.

[0018] Compared with the prior art, the present invention has the following beneficial technical effects:

[0019] This utility model relates to an anti-caking device for baking soda production. By setting up a crushing roller group, baking soda can be efficiently crushed in its initial stage. The crushed baking soda can be transported to the screening chamber by a screw feeder. The centrifugal force generated by the screw feeder and the thrust of the cold air from the cold air vents allow the baking soda to be cooled quickly and screened through the drum screen, which greatly improves production efficiency. In addition, the crushed baking soda can be mixed with an anti-caking agent in the mixing drum, making the final product even more effective at preventing caking. Attached Figure Description

[0020] Figure 1 This is a structural diagram of a sodium bicarbonate production anti-caking device according to this utility model.

[0021] Figure 2 This is a structural diagram of the crushing roller assembly of this utility model.

[0022] The components include: 1. Storage cylinder; 11. Feeding port; 12. Discharge port; 13. S-shaped flow channel; 2. Crushing roller assembly; 21. Motor; 22. Driven roller; 221. First convex bulge; 23. Driven roller; 231. Second convex bulge; 24. Driven gear; 25. Driven gear; 26. First cleaning brush; 27. Second cleaning brush; 3. Heat exchanger; 4. Cooling screening cylinder; 41. Feeding chamber; 42. Screening chamber; 421. Fine material outlet; 422. Cold air recovery port; 43. Coarse material chamber; 431. Coarse material outlet; 44. Spiral feed rod; 441. Cold air channel; 442. Cold air hole; 45. Drum screen; 46. Filter screen; 47. Cold air recovery pipe; 5. Coarse material collection bucket; 6. Elevator; 7. Mixing cylinder; 71. Anti-caking agent addition port; 72. Mixing blades; 73. Finished product outlet. Detailed Implementation

[0023] Many specific details are set forth in the following description to provide a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] Example 1

[0025] like Figure 1-2 As shown, a sodium bicarbonate production anti-caking device includes the following structure:

[0026] Storage cylinder 1 is used for preliminary crushing and cooling of baking soda. Storage cylinder 1 has a feeding port 11 at the top and a discharge port 12 at the bottom, with a crushing roller assembly 2 inside the discharge port 12. The crushing roller assembly 2 includes a motor 21, a driving roller 22, and a driven roller 23. The motor 21 is connected to the driving roller 22, and the end of the driving roller 22 is equipped with a driving gear 24. The driven roller 23 is equipped with a driven gear 25, and the driving gear 24 meshes with the driven gear 25. Driven by the motor 21 and through gear transmission, the driving roller 22 and the driven roller 23 rotate in opposite directions, thereby initially crushing the baking soda passing through the crushing roller assembly 2.

[0027] The driving roller 22 and the driven roller 23 can be planar or toothed structures. Preferably, the driving roller 22 has a plurality of first protrusions 221 on its surface, and the driven roller 23 has a plurality of second protrusions 231 on its surface. The second protrusions 231 are offset relative to the first protrusions 221, which can improve the initial crushing efficiency.

[0028] The feed inlet 12 is equipped with a first cleaning brush 26 that is in contact with the lower surface of the drive roller 22 and a second cleaning brush 27 that is in contact with the lower surface of the driven roller 23. There is a feeding gap between the first cleaning brush 26 and the second cleaning brush 27. The pulverized baking soda falls through the feeding gap, and the cleaning brush can clean the baking soda adhering to the surface of the pulverizing roller assembly 2 in a timely manner, so as to avoid the pulverizing effect being affected by the accumulation of baking soda.

[0029] The storage cylinder 1 has an S-shaped flow channel 13 inside its side wall, which contains refrigerant. The S-shaped flow channel 13 is connected to a heat exchanger 3 located outside the storage cylinder 1. The cooling capacity generated by the refrigerant can provide initial cooling for the baking soda inside the storage cylinder 1.

[0030] The cooling screening cylinder 4 is used for simultaneously cooling and screening baking soda. The cooling screening cylinder 4 has a horizontally arranged feeding chamber 41, screening chamber 42, and coarse material chamber 43. The feeding chamber 41 is connected to the discharge port 12 to receive the pre-crushed baking soda. A spiral feeder 44 horizontally runs through the feeding chamber 41, screening chamber 42, and coarse material chamber 43. The screening chamber 42 has a drum screen 45 fitted around the spiral feeder 44. The bottom of the screening chamber 42 has a fine material outlet 421, and the bottom of the coarse material chamber 43 has a coarse material outlet 431. The spiral feeder 44 has an axial cooling air channel 441, and the portion of the spiral feeder 44 located in the screening chamber 42 has multiple cooling air holes 442.

[0031] Based on the above structure, after the initial crushing of baking soda falls into the feeding chamber 41, it is fed into the screening chamber 42 by the screw feeder 44. In the screening chamber 42, the baking soda is subjected to the radial thrust of the cold air coming out of the cold air hole 442 and the centrifugal force of the screw feeder 44. Under the dual action of these forces, the fine-sized baking soda will quickly pass through the drum screen 45 and then fall out of the fine material outlet 421, while the coarse-sized baking soda will continue to be conveyed to the coarse material chamber 43 and then fall out of the coarse material outlet 431. In this way, the secondary cooling and rapid screening of baking soda can be achieved.

[0032] The coarse material outlet 431 is connected to the coarse material collection tank 5, the coarse material collection tank 5 is connected to the elevator 6, and the elevator 6 is connected to the storage cylinder 1 to achieve secondary recycling and crushing of the coarse material. Of course, the elevator 6 can also be omitted, and the coarse material can be manually poured back into the storage cylinder 1.

[0033] The cold air passage 441 is connected to a cold air source. The top of the screening chamber 42 is equipped with a cold air recovery port 442, and a filter screen 46 is installed at the cold air recovery port 442 to prevent baking soda from entering the cold air recovery port 442. The cold air recovery port 442 is connected to a cold air recovery pipe 47, which is connected to the cold air source to achieve the circulation of cold air.

[0034] The mixing drum 7 is used for mixing the anti-caking agent. One side of the top of the mixing drum 7 is connected to the fine material outlet 421, and the other side has an anti-caking agent addition port 71. The mixing drum 7 contains stirring blades 72, and one side of the bottom has a finished product outlet 73. The anti-caking agent can be anhydrous calcium chloride, calcium oxide, anhydrous magnesium sulfate, or other hygroscopic anhydrous compounds, and its addition ratio is 0.1-1% of the weight of baking soda. By adding an appropriate anti-caking agent, clumping of baking soda after packaging can be further prevented.

[0035] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. However, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for preventing caking in baking soda production, characterized in that: A storage cylinder, wherein a discharge port is provided at the bottom of the storage cylinder, and a crushing roller assembly is provided inside the discharge port; A cooling screening cylinder is provided with a feeding chamber, a screening chamber and a coarse material chamber. The feeding chamber is connected to the discharge port. A spiral feeding rod is transversely connected to the feeding chamber, the screening chamber and the coarse material chamber. A drum screen is provided in the screening chamber and sleeved on the spiral feeding rod. A fine material outlet is provided at the bottom of the screening chamber and a coarse material outlet is provided at the bottom of the coarse material chamber. The spiral feeding rod is provided with an axial cooling air channel. The portion of the spiral feeding rod located in the screening chamber is provided with multiple cooling air holes. The mixing drum has a top side connected to the fine material outlet and an anti-caking agent addition port on the other side. The mixing drum is equipped with mixing blades, and the bottom side of the mixing drum has a finished product outlet.

2. The anti-caking device for baking soda production according to claim 1, characterized in that: The storage cylinder has an S-shaped flow channel inside its side wall, and the S-shaped flow channel is filled with refrigerant. The S-shaped flow channel is connected to a heat exchanger located outside the storage cylinder.

3. The anti-caking device for baking soda production according to claim 2, characterized in that: The crushing roller assembly includes a motor, a driving roller, and a driven roller. The motor is connected to the driving roller. The driving roller is provided with a driving gear at its end, and the driven roller is provided with a driven gear. The driving gear meshes with the driven gear.

4. The anti-caking device for baking soda production according to claim 3, characterized in that: The surface of the driving roller is provided with a plurality of first protrusions, and the surface of the driven roller is provided with a plurality of second protrusions, the second protrusions being offset relative to the first protrusions.

5. The anti-caking device for baking soda production according to claim 4, characterized in that: The feed inlet is provided with a first cleaning brush that is in contact with the lower surface of the drive roller and a second cleaning brush that is in contact with the lower surface of the driven roller, and there is a feed gap between the first cleaning brush and the second cleaning brush.

6. The anti-caking device for sodium bicarbonate production according to any one of claims 1-5, characterized in that: The coarse material outlet is connected to a coarse material collection tank, the coarse material collection tank is connected to an elevator, and the elevator is connected to a storage cylinder.

7. The anti-caking device for baking soda production according to claim 6, characterized in that: The cold air channel is connected to a cold air source, and a cold air recovery port is provided at the top of the screening chamber. The cold air recovery port is connected to a cold air recovery pipe, which is connected to the cold air source.

8. The anti-caking device for baking soda production according to claim 7, characterized in that: A filter screen is installed at the cold air recovery port.

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