Granulation device in potassium sulfate production

Abstract

The utility model belongs to the technical field of chemical equipment, and discloses a granulating device in potassium sulfate production, which comprises a raw material storage tank, a tablet press, a crusher, a granulator, a tray granulator, a vibrating screen and a packaging machine which are sequentially communicated through conveying pipelines and valves, the vibrating screen is provided with a particle outlet and a powder outlet, the particle outlet of the vibrating screen is communicated with a feeding port of the packaging machine through a conveying pipeline, and the powder outlet of the vibrating screen is communicated with a feeding port of the raw material storage tank through a conveying pipeline. A dust collecting cover is arranged above a discharging port of the packaging machine and communicated with a dust remover through an induced draft fan, and a dust collecting groove of the dust remover is communicated with a feeding port of the raw material storage tank through a pipeline. The granulating device is good in granulating effect, the powder content of obtained products is low, and the product quality is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of chemical equipment, and particularly relates to a granulating device in potassium sulfate production. Background Art

[0002] Potassium sulfate is an inorganic salt, generally with a K content of 50% - 52% and an S content of about 18%. It has wide applications in the pharmaceutical, chemical, and food industries. Due to different uses, different requirements are imposed on the shape of potassium sulfate products. For example, as a potassium fertilizer in the agricultural field, it requires granular products with a certain hardness (the lower the powder content, the better). However, in the current granulation process, the general procedure is powder pressing - crushing - sizing - screening - packaging of potassium sulfate powder. The granules prepared by this process have uneven hardness, and many granules are broken during packaging and transportation, resulting in a high powder content in the final product, seriously affecting the overall quality of the product. Summary of the Invention

[0003] The technical problem to be solved by the utility model is to provide a granulating device in potassium sulfate production, which overcomes the defects of the prior art, has good granulation effect, low powder content in the obtained product, and high product quality.

[0004] To solve the above technical problem, the technical solution of the utility model is as follows:

[0005] A granulating device in potassium sulfate production includes a raw material storage tank, a tablet press, a crusher, a sizing machine, a pan granulator, a vibrating screen, and a packaging machine that are sequentially connected through a conveying pipeline and valves. The vibrating screen is provided with a particle outlet and a powder outlet. The particle outlet of the vibrating screen is connected to the feed inlet of the packaging machine through a conveying pipeline, and the powder outlet of the vibrating screen is connected to the feed inlet of the raw material storage tank through a conveying pipeline. A dust collection hood is arranged above the discharge outlet of the packaging machine. The dust collection hood is connected to a dust collector through an induced draft fan, and the dust collection tank of the dust collector is connected to the feed inlet of the raw material storage tank through a pipeline.

[0006] Preferably, the sizing machine is a KZL type sizing machine. The manufacturer is Changzhou Qianjiang Drying Equipment Engineering Co., Ltd.

[0007] Preferably, the pan granulator is a disk granulator. It is a ZL series disk pelletizer, and the manufacturer is Zhengzhou Huaqiang Heavy Industry Technology Co., Ltd.

[0008] Preferably, the dust collector is further provided with a tail gas outlet, and the tail gas outlet is connected to a tail gas treatment device through a pipeline.

[0009] Preferably, the dust collector is a bag filter. It is customized, and the manufacturer is Botou Fudong Environmental Protection Equipment Co., Ltd.

[0010] Due to adopting the above technical solution, the beneficial effect of the utility model is:

[0011] 1. By adding a pan granulator in the present utility model, the particles are continuously impacted during the operation of the pan granulator. The particles with poor hardness are broken, and the remaining particles with higher hardness will not be broken again during packaging and transportation. Meanwhile, during packaging, some powders adsorbed by static electricity on the surface of the particles during crushing and screening are sucked away by an induced draft fan and enter the dust collector, and are recycled after being collected by the dust collector; thus, the powder content of the finished product is reduced, and the product quality is improved.

[0012] 2. The powders obtained after screening in the present utility model and the powders collected by the dust collector during packaging are re-fed into the raw material storage tank for reuse, ensuring the product yield.

[0013] In summary, the present utility model has good granulation effect, the obtained product has low powder content and high product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0015] Figure 1 It is a schematic flow chart of an embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The present utility model will be further elaborated below in conjunction with the drawings and embodiments.

[0017] As Figure 1 shown, the present utility model is a granulating device in potassium sulfate production, including a raw material storage tank, a tablet press, a crusher, a sizing machine, a pan granulator, a vibrating screen and a packaging machine connected in sequence through a conveying pipeline and valves; the vibrating screen is provided with a particle outlet and a powder outlet. The particle outlet of the vibrating screen is connected to the feed inlet of the packaging machine through a conveying pipeline, and the powder outlet of the vibrating screen is connected to the feed inlet of the raw material storage tank through a conveying pipeline; a dust hood is arranged above the discharge outlet of the packaging machine, the dust hood is connected to the dust collector through an induced draft fan, and the dust collecting tank of the dust collector is connected to the feed inlet of the raw material storage tank through a pipeline.

[0018] During actual production, the potassium sulfate powder obtained from the previous process is pressed by a tablet press and then broken by a crusher. The broken fragments are sized again by a sizing machine and then conveyed to a pan granulator for pan granulation. The particles with poor hardness are broken, and then the materials are conveyed to a vibrating screen for screening together. The screened particles are conveyed to a packaging machine for packaging, and the screened powders are re-fed into the raw material storage tank for further processing; when the packaging machine is packaging, some powders adsorbed by static electricity on the particles are sucked away by an induced draft fan and enter the dust collector for collection, and then the collected powders are re-fed into the raw material storage tank for further processing. In this way, the materials are maximally utilized, ensuring the product yield. Through the above operations, the powder content in the finished product particles is greatly reduced, reaching about 0.7%, fully meeting the customer requirements, and the production environment is also optimized.

[0019] It should be understood that these embodiments are only used to illustrate the present utility model and not to limit the scope of the present utility model. In addition, it should be understood that after reading the content taught by the present utility model, those skilled in the art can make various changes or modifications to the present utility model, and these equivalent forms also fall within the scope defined by the appended claims of this application.

Claims

1. A granulating device in potassium sulfate production, characterized in that: It includes a raw material storage tank, a tablet press, a crusher, a granulating machine, a disk granulator, a vibrating screen and a packaging machine that are connected in sequence through a conveying pipeline and valves; the vibrating screen is provided with a particle outlet and a powder outlet, the particle outlet of the vibrating screen is connected to the feed inlet of the packaging machine through a conveying pipeline, and the powder outlet of the vibrating screen is connected to the feed inlet of the raw material storage tank through a conveying pipeline; a dust collection hood is arranged above the discharge outlet of the packaging machine, the dust collection hood is connected to a dust collector through an induced draft fan, and the dust collection tank of the dust collector is connected to the feed inlet of the raw material storage tank through a pipeline.

2. The granulation device in the production of potassium sulfate according to claim 1, characterized in that: The disk granulator is a disk pelletizer.

3. The granulation device in the production of potassium sulfate according to claim 1, characterized in that: The dust collector is further provided with a tail gas outlet, and the tail gas outlet is connected to a tail gas treatment device through a pipeline.

4. The granulation device in the production of potassium sulfate according to claim 1, characterized in that: The dust collector is a bag filter.

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