Airflow circulation purification method for cotton processing workshop

Abstract

The invention provides an airflow circulation purification method for a cotton processing workshop, relates to the field of waste heat utilization of workshops, and aims to solve the problems that various impurities are generated due to different processing flows of the cotton processing workshop and the temperature in the workshop is unbalanced due to dust removal, the workshop is divided into a seed cotton cleaning area, a cotton ginning area and a dust removal area which are respectively provided with dust removal assemblies. Different impurities generated in different areas are treated in a targeted mode, air flows from the seed cotton cleaning area and the cotton ginning area are mixed through the second-stage dust remover, heat exchange and dust removal are conducted, then clean air flows are discharged into a workshop, and meanwhile according to the temperature requirements of the different areas, the temperature of the cotton ginning area is adjusted. The air supply amount of clean air flow to a drying tower area in a seed cotton cleaning area is reduced, and the air supply amount of clean air flow to a cotton ginning area is increased, so that the temperature in a workshop is balanced.

Description

Technical Field

[0001] The present invention relates to the field of waste heat utilization in workshops, and particularly to an air flow circulation and purification method for a cotton processing workshop. Background Art

[0002] In a cotton processing workshop of a cotton processing enterprise, in order to discharge the dust-containing air generated by the operation of equipment in the workshop, a fan is arranged outside the workshop, and the dust-containing air in the workshop is extracted through a pipeline and directly discharged into the atmosphere after filtration. In the cold season, after the air in the workshop is extracted, the cold outdoor air is supplemented into the workshop, resulting in too low temperature in the workshop, affecting the operation of some equipment, and thus additional heating equipment needs to be configured for some equipment to ensure its normal operation. At the same time, the low temperature in the workshop also makes workers need to wear thick warm clothes during work, restricting the operation flexibility.

[0003] A system and method for atmospheric treatment and utilization for maintaining the temperature and humidity in a workshop are disclosed in a Chinese patent (Publication No. CN 111536605 A, Publication Date: August 14, 2020). The air inlet and the air outlet of the dust collector are respectively connected with a dust removal inlet pipeline and a dust removal outlet pipeline. The inlet end of the dust removal inlet pipeline penetrates into the interior of the equipment workshop, the outlet end of the dust removal outlet pipeline is connected with the air inlet of the fan, the air outlet of the fan is connected with the air inlet of the odor processor through a connecting pipeline, the air outlet of the odor processor is connected with an exhaust pipeline, and the exhaust section of the exhaust pipeline penetrates into the equipment workshop. The air in the equipment workshop is filtered by the dust collector and then discharged into the equipment workshop, which helps to maintain the air temperature and humidity in the workshop. It is aimed at a tobacco processing workshop, and the type of impurities is single, mainly dust. However, due to different cotton processing processes in a cotton processing workshop, there are various impurities in the air. In this process, if only simple ventilation equipment is used for air replacement, in the impurity-containing airflows generated by various equipment such as a seed cotton separator and a lint cleaner, dust, cotton fiber impurities, seed cotton debris, etc. are mixed together and are uniformly discharged or simply filtered by the ventilation equipment, and different types and sizes of impurities cannot be effectively separated, affecting recycling. In addition, in the prior art, the treated air is discharged into the equipment workshop, but the heat generation of different equipment on the production line in the workshop is not the same. If the treated air is directly and evenly distributed, there are still problems of overheating in some areas and overcooling in some areas. Summary of the Invention

[0004] The object of the present invention is to provide an air flow circulation and purification method for a cotton processing workshop in view of the defects existing in the prior art. The workshop is divided into a raw cotton cleaning area, a ginning area and a dust removal area, and dust removal components are respectively configured, so as to realize targeted treatment of different impurities generated in different areas. The secondary dust collector mixes the air flows from the raw cotton cleaning area and the ginning area, exchanges heat and removes dust, and then discharges the clean air flow into the workshop. At the same time, according to the temperature requirements of different areas, the air supply volume of the clean air flow to the drying tower area in the raw cotton cleaning area is reduced, and the air supply volume of the clean air flow to the ginning area is increased, so as to balance the temperature in the workshop.

[0005] To solve the above problems, the following solutions are adopted:

[0006] An air flow circulation and purification method for a cotton processing workshop, comprising:

[0007] The workshop is divided into a raw cotton cleaning area corresponding to the cotton processing process, a ginning area, and a dust removal area corresponding to the installation of a dust collector;

[0008] The seed cotton separator, the inclined down-draft seed cleaner, and the image separator in the raw cotton cleaning area are respectively connected to a primary dust collector through a first fan group, and after removing fiber impurities and cotton seed fragments by the primary dust collector, they are sent to a secondary dust collector;

[0009] The inclined down-draft seed cleaner, the lint cleaner, the sterile seed collecting dust cage, and the collecting dust cage in the ginning area are respectively connected to a primary dust collector through a second fan group, and after removing fiber impurities and raw cotton debris by the primary dust collector, they are sent to a secondary dust collector;

[0010] The secondary dust collector mixes the air flows from the raw cotton cleaning area and the ginning area output from the primary dust collector, exchanges heat and removes dust, and then discharges the clean air flow into the workshop;

[0011] Reduce the air supply volume of the clean air flow to the drying tower area in the raw cotton cleaning area, increase the air supply volume of the clean air flow to the ginning area, and balance the temperature in the workshop.

[0012] Further, the drying tower is equipped with an electric heating fan, and a drying branch is provided at the output of the secondary dust collector. The outdoor air flow input to the electric heating fan exchanges heat with the clean air flow in the drying branch and is then supplied into the electric heating fan.

[0013] Further, the impurity discharge port of the primary dust collector is connected to the sterile seed collecting dust cage, and the fiber collected by the primary dust collector is transported to the sterile seed collecting dust cage.

[0014] Further, the workshop is divided into multiple temperature control areas, and a temperature sensor and a clean air flow discharge port are respectively provided in each temperature control area. According to the temperature in the temperature control area monitored by the temperature sensor, the air supply volume of the clean air flow discharge port is adjusted.

[0015] Further, an exhaust fan is provided at the clean air outlet.

[0016] Further, a fresh air system is also provided. The fresh air inlet pipe and the fresh air exhaust pipe of the fresh air system exchange heat through a heat exchanger.

[0017] Further, in the unginned cotton cleaning area, the unginned cotton separator is connected to the primary dust collector through an external cotton suction fan, the inclined downward air suction unginned cotton cleaner is connected to the primary dust collector through a cyclone and a downward air suction fan, and the image separator is connected to the primary dust collector through an image fan.

[0018] Further, in the ginning area, the inclined downward air suction unginned cotton cleaner is connected to the primary dust collector through a cyclone and an internal cotton suction fan, the lint cleaning machine is connected to the primary dust collector through a lint cleaning fan, the sterile seed collecting dust cage is connected to the primary dust collector through a sterile seed fan, and the collecting dust cage is connected to the primary dust collector through a collecting fan.

[0019] Further, the first fan group and the second fan group are arranged in the annex platform area divided in the dust removal area, and the first fan group and the second fan group are connected to other equipment through pipelines.

[0020] Further, a sound insulation cover is provided outside the annex platform area, a partition wall is provided between the unginned cotton cleaning area and the ginning area, and a ventilating door that can be opened and closed is provided on the partition wall.

[0021] Compared with the prior art, the advantages and positive effects of the present invention are:

[0022] Aiming at the problems of various impurities generated in the cotton processing workshop due to different processing processes and uneven temperature caused by dust removal in the workshop, the workshop is divided into an unginned cotton cleaning area, a ginning area and a dust removal area, and dust removal components are respectively configured to achieve targeted treatment of different impurities generated in different areas. The secondary dust collector is used to mix the airflows from the unginned cotton cleaning area and the ginning area, exchange heat and remove dust, and then discharge the clean air into the workshop. At the same time, according to the temperature requirements of different areas, the air supply volume of the clean air to the drying tower area in the unginned cotton cleaning area is reduced, and the air supply volume of the clean air to the ginning area is increased, so as to balance the temperature in the workshop.

[0023] It can accurately separate various impurities generated in the cotton processing process, improve the purity of the air in the workshop, reduce the damage of impurities to equipment, and is beneficial to the stable operation of equipment and the improvement of cotton processing quality.

[0024] Successfully solved the problem of uneven temperature in the workshop, made the temperature of each area in the workshop suitable, created a comfortable working environment for workers, improved the working efficiency of workers, and at the same time helped to reduce the failure rate of equipment caused by abnormal temperature, and improved the production efficiency of the entire cotton processing workshop.

[0025] In order to improve the cleaning efficiency of the seed cotton cleaning equipment for the impurities in the seed cotton, it is necessary to reduce the moisture regain (water content) of the seed cotton. Therefore, it is necessary to increase the air temperature in the seed cotton cleaning area, so a large amount of hot air is recycled. In the ginning area, since the moisture regain of the seed cotton is too low, it will damage the length of the cotton fibers and increase the short fiber index. Therefore, the temperature in the ginning area should be relatively lower than that in the seed cotton cleaning area, and the humidity should be relatively higher than that in the seed cotton cleaning area. Therefore, the recycling of heat in the ginning area should be less than that in the seed cotton cleaning area, and the air volume of the ventilation openings in the ginning area is smaller than that of the ventilation openings in the seed cotton cleaning area. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings forming a part of this invention are used to provide a further understanding of the invention. The schematic embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0027] Figure 1 It is a schematic diagram of the air flow circulation and purification in the cotton processing workshop in Embodiment 1 of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0028] Embodiment 1

[0029] In a typical embodiment of the present invention, as Figure 1 shown, a method for air flow circulation and purification in a cotton processing workshop is provided.

[0030] A method for air flow circulation and purification in a cotton processing workshop includes:

[0031] The workshop is divided into a seed cotton cleaning area corresponding to the cotton processing process, a ginning area, and a dust removal area corresponding to the installation of a dust collector;

[0032] The seed cotton separator, the inclined down-draft seed cotton cleaner, and the image separator in the seed cotton cleaning area are respectively connected to the primary dust collector through the first fan group. After removing fiber impurities and cottonseed fragments by the primary dust collector, they are sent to the secondary dust collector;

[0033] The inclined down-draft seed cotton cleaner, the lint cleaner, the sterile seed collecting dust cage, and the collecting dust cage in the ginning area are respectively connected to the primary dust collector through the second fan group. After removing fiber impurities and seed cotton debris by the primary dust collector, they are sent to the secondary dust collector;

[0034] The secondary dust collector mixes the airflows from the seed cotton cleaning area and the ginning area output from the primary dust collector, exchanges heat and removes dust, and then discharges the clean air flow into the workshop;

[0035] Reduce the air supply volume of the clean air flow to the drying tower area in the seed cotton cleaning area, increase the air supply volume of the clean air flow to the ginning area, and balance the temperature in the workshop.

[0036] As Figure 1 shown, the various equipment in the cotton processing workshop on which the air flow circulation and purification method for the cotton processing workshop depends is described.

[0037] Preliminary treatment is carried out in the unginned cotton cleaning area. After the unginned cotton is loosened by the cotton feeding machine, it is transported through a pipeline, and heavy impurities are removed by a heavy impurity separator, and then it enters the unginned cotton separator. Here, the unginned cotton and the dusty air are separated, and the dusty air is sent to the dust collector by a blower. The separated unginned cotton falls into the three-wire machine for cleaning.

[0038] The cleaned unginned cotton is sent into the drying tower by an electric drying blower for drying. The unginned cotton at the outlet of the drying tower is pulled by an inclined downward suction blower to an inclined downward suction unginned cotton cleaner for cleaning. The impurities generated during cleaning are sent to a primary dust collector for fiber filtration and collection after being pulled by a blower and removing heavy impurities through a cyclone, and then are sent to the sterile seed separator for packing through a pipeline. The air without fiber impurities after filtration enters the secondary dust collector, and after filtering dust and other impurities through filter bags, it is discharged into the workshop, and the discharge meets the national standards.

[0039] The unginned cotton after being cleaned by the inclined downward suction unginned cotton cleaner enters the netting unginned cotton cleaner and the double-acting unginned cotton cleaner in sequence for further cleaning. The cleaned unginned cotton is pulled by an image blower into an image separator. The dusty air separated is filtered by a dust collector through a blower pipeline and then discharged into the workshop, and the unginned cotton enters the image unginned cotton cleaner for cleaning and even spreading, and then enters the image three-wire machine for selection. After that, it is sent to the inclined downward suction unginned cotton cleaner on the gin by an internal suction blower for cleaning. The impurity treatment method is the same as before, and the dust collector filtration process is repeated.

[0040] In the airflow in the unginned cotton cleaning area, the dust and dirt come from the loosening of the unginned cotton by the cotton feeding machine, transportation through the pipeline, and processing in equipment such as the unginned cotton separator. The dust among them will be lifted into the airflow. These dust particles vary in size and may come from the growth environment of the unginned cotton or be mixed in the workshop; the unginned cotton debris comes from the cleaning process of the unginned cotton by equipment such as the inclined downward suction unginned cotton cleaner, the netting unginned cotton cleaner, and the double-acting unginned cotton cleaner. Some unginned cotton will be broken due to mechanical action and form debris mixed in the airflow. These debris may interfere with the subsequent processing process and need to be cleaned in time. The fiber impurities come from the process of cleaning the unginned cotton by equipment such as the three-wire machine. When cleaning the cotton seeds, some fiber impurities such as entangled cotton filaments and short fibers will be removed. These impurities will be carried out by the airflow and mixed into the subsequent processing links, affecting the quality of the unginned cotton.

[0041] Ginning is carried out in the ginning area. After the cleaned unginned cotton enters the double - type unginned cotton cleaner and the cotton blending auger, it reaches the upper part of the gin for cleaning, and then is fed into the working box for separating cotton fibers and cotton seeds. The cotton seeds and impurities are discharged from the workshop through the waste discharging auger. The cotton fibers are pulled by the skin cleaner blower and first enter the pneumatic skin cleaner for impurity removal (the impurities are discharged from the workshop through the auger), and then enter the lint cleaner for impurity removal. The cotton fiber - containing impurities after cleaning are pulled by the aborted - seed blower and enter the aborted - seed separator for separation and then are baled. The dust - containing air enters the dust collector for filtration. The cotton fibers after being cleaned by the skin cleaner are pulled by the cotton collecting blower and enter the cotton collector through a large - diameter cotton collecting pipeline, separating the cotton fibers and the dust - containing air (the dust - containing air enters the dust collector for filtration). Finally, the cotton fibers enter the baling press for baling and are sent to the bale stacking machine for stacking by the conveyor belt.

[0042] In the air flow in the ginning area, cotton fiber impurities come from the separation of cotton fibers and cotton seeds and the subsequent lint cleaning process, and a large number of fine cotton fiber impurities will be generated. These impurities may be the short fibers remaining on the cotton seeds, the fibers damaged and broken during the processing, etc. For example, when the gin is working, the strong separation of cotton seeds and cotton fibers will cause some fibers to break and form impurities mixed into the air flow. Cotton seed fragments come from the fragments formed by mechanical crushing. Although the gin is designed to achieve efficient separation of cotton fibers and cotton seeds, a small amount of cotton seeds will still be crushed by mechanical action to form fragments and enter the air flow. These cotton seed fragments will affect the normal operation of subsequent cotton fiber processing equipment, such as blocking pipelines or damaging the fan blades. Dust is raised into the air flow during the operation of the ginning area equipment and the cotton processing operations. These dusts come from the dust carried by the cotton itself and the dust in the workshop environment. Long - term accumulation will reduce the air quality in the workshop and cause wear to the equipment.

[0043] Dust - collecting pipelines are installed on each waste discharging auger to purify the flying fluff and dust in the workshop and improve the working environment. The heat generated by the electric equipment in the workshop and the unginned cotton drying system increase the workshop temperature. In this embodiment, the hot air is discharged into the workshop to retain the heat, avoiding discharging the hot air outside the workshop to form a negative pressure and introducing cold air. Thus, the workshop temperature is higher than that outside the workshop, the working environment of workers is more comfortable, there is no need to wear thick cotton - padded clothes in winter, reducing the operational inconvenience and potential safety hazards, lowering the accident rate, and at the same time, the equipment failure rate is also lower.

[0044] In terms of electric drying, the heating temperature is raised from below zero degrees Celsius to start heating at 20 degrees Celsius, reducing the power consumption, with significant energy - saving effects. It also reduces the damage rate of the vulnerable parts of the equipment and the comprehensive processing cost per ton of lint.

[0045] The drying tower is equipped with an electric heating fan, and the drying branch output by the secondary dust collector is used to exchange heat with the outdoor air flow and then supply it to the electric heating fan, realizing the effective recovery and reuse of heat. By exchanging heat between the purified and heat-exchanged clean air flow in the workshop and the outdoor cold air, the temperature of the air entering the electric heating fan is increased, the energy consumption required for electric heating is reduced, the production cost is lowered, and at the same time, the energy utilization efficiency is improved, making the entire drying process more energy-saving and environmentally friendly.

[0046] Connect the impurity discharge port of the primary dust collector to the infertile seed collecting dust cage, which helps to centrally process the collected fibers. In the cotton processing process, the collection and processing of infertile seeds and fibers are important links, which can ensure that the fibers cleaned from the primary dust collector can be orderly transported to the infertile seed collecting dust cage, facilitating subsequent operations such as packing and processing of infertile seeds and fibers, and improving the coherence and production efficiency of the production process.

[0047] In order to improve the rationality of temperature distribution in the workshop, the workshop is divided into multiple temperature control areas, and temperature sensors and clean air flow discharge ports are set in each area. The air supply volume is adjusted according to the temperature monitored by the sensors, realizing refined temperature control. Different cotton processing procedures may have different temperature requirements. The zoning control method can ensure that each area can maintain an appropriate temperature, improve the comfort of workers and the operating stability of equipment, and avoid adverse effects on production caused by too high or too low temperature.

[0048] Exhaust fans are set at the clean air flow discharge ports to ensure that the purified air can effectively circulate in the workshop according to requirements, enhancing the air circulation effect. The setting of the fresh air system helps to maintain the freshness of the air in the workshop. The inlet pipe and exhaust pipe of the fresh air system are heat-exchanged through a heat exchanger, further improving the energy utilization efficiency, reducing heat loss while introducing fresh air, and maintaining the temperature stability in the workshop.

[0049] In this embodiment, as Figure 1 shown, the first fan group includes an outer cotton suction fan, a lower suction fan and a graphic fan, and the second fan group includes an inner cotton suction fan, an infertile seed fan and a cotton collecting fan.

[0050] In the unginned cotton cleaning area and the ginning area, in the unginned cotton cleaning area, the unginned cotton separator is connected to the primary dust collector through the external cotton suction fan, the inclined down-draft unginned cotton cleaner is connected to the primary dust collector through the cyclone and the down-draft fan, and the image separator is connected to the primary dust collector through the image fan; in the ginning area, the inclined down-draft unginned cotton cleaner is connected to the primary dust collector through the cyclone and the internal suction fan, the lint cleaner is connected to the primary dust collector through the lint cleaning fan, the sterile seed collecting dust cage is connected to the primary dust collector through the sterile seed fan, and the collecting dust cage is connected to the primary dust collector through the collecting fan. Each device is connected to the primary dust collector through a specific fan, ensuring that the impurity-containing airflows generated by different devices can be timely and effectively transported to the dust collector for treatment, preventing the diffusion of impurities in the workshop. At the same time, the first fan group and the second fan group are arranged on the annex platform area of the dust removal area and connected to other devices through pipelines, optimizing the spatial layout of the workshop, facilitating the maintenance and management of the devices, reducing the complexity of pipeline laying, and improving the safety and convenience of production. There is a soundproof cover outside the annex platform area, and there is a partition wall between the unginned cotton cleaning area and the ginning area. There is a ventilating door that can be opened and closed on the partition wall, reducing the transmission of noise generated by the operation of the first fan group and the second fan group into the workshop.

[0051] The unginned cotton separator, the inclined down-draft unginned cotton cleaner, and the image separator are respectively connected to the primary dust collector through the external cotton suction fan, the cyclone and the down-draft fan, and the image fan. This is because during the unginned cotton cleaning process, a large amount of impurity-containing airflows are generated by the equipment, which contain impurities such as dust, fibers, and cottonseed debris. The impurity-containing airflows are transported to the primary dust collector through their respective corresponding fans, and targeted cleaning is carried out using multiple dust removal modules of the primary dust collector. For example, the impurity-containing airflow generated by the unginned cotton separator may mainly be the dust and a small amount of cottonseed impurities raised during the unginned cotton separation process. The corresponding dust removal module in the primary dust collector can adopt a combination of a coarse filter screen and cyclone separation for preliminary filtration, effectively removing large particle impurities and preventing them from affecting subsequent equipment and processing processes, ensuring the smooth progress of the unginned cotton cleaning work.

[0052] In the ginning area, the inclined down-draft unginned cotton cleaner, the lint cleaner, the sterile seed collecting dust cage, and the collecting dust cage are respectively connected to the primary dust collector through the cyclone and the internal suction fan, the lint cleaning fan, the sterile seed fan, and the collecting fan. During the ginning process, operations such as the separation of cotton fibers and cottonseeds and the cleaning of cotton fibers will generate different types of impurity-containing airflows. For example, the impurity-containing airflow generated by the lint cleaner is rich in fine cotton fiber impurities and dust. After being connected to the primary dust collector, its corresponding dust removal module can use a combination of electrostatic adsorption and bag filtration to efficiently capture fine impurities, ensure the quality of cotton fibers, maintain a clean working environment in the ginning area at the same time, reduce the wear and blockage of impurities on the equipment, and improve the stability and reliability of equipment operation.

[0053] The primary dust collector in the dust removal area adapts to and cleans the impurity-containing airflows from different sources by means of multiple dust removal modules, fully considering the characteristic differences in the impurities generated by each device, and achieving efficient impurity separation. The secondary dust collector receives the airflow output by the primary dust collector and further filters impurities such as dust in it to ensure that the air discharged back to the workshop meets the environmental protection standards. Inside the secondary dust collector, due to the different temperatures of the impurity-containing airflows from different sources, the airflows are fully mixed through its special internal structure design to achieve temperature uniformity. Subsequently, according to the temperature monitoring data of each area in the workshop, by using ventilation ducts and air volume adjustment devices, the air supply volume is reduced in the areas with higher temperatures to avoid excessive heat accumulation; the air supply volume is increased in the areas with lower temperatures to effectively utilize the recovered heat, maintain a relatively stable and suitable temperature environment in the workshop, improve the working comfort of workers and the working efficiency of equipment, and reduce energy consumption.

[0054] In this embodiment, the indoor circulation is adopted to collect and utilize all the heat, but it requires the construction investment of the workshop; in other alternative embodiments, the dust removal area can be distributed outdoors, isolated from the unginned cotton cleaning area and the ginning area. Install dust collectors in the outdoor dust removal area. After insulating the pipelines and dust removal equipment, the temperature of the workshop can also be increased. The installation of dust collectors in the dust removal area is not restricted by space, saving the investment cost of building a workshop.

[0055] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A method for purifying air flow circulation in a cotton processing workshop, characterized in that, Including: The workshop is divided into a seed cotton cleaning area, a ginning area corresponding to the cotton processing process, and a dust removal area for installing dust collectors. The seed cotton separator, the inclined down-draft seed cleaner, and the image separator in the seed cotton cleaning area are respectively connected to the primary dust collector through the first fan group. After removing fiber impurities and cotton seed fragments by the primary dust collector, they are sent to the secondary dust collector. The inclined down-draft seed cleaner, the lint cleaner, the sterile seed collecting dust cage, and the cotton collecting dust cage in the ginning area are respectively connected to the primary dust collector through the second fan group. After removing fiber impurities and seed cotton debris by the primary dust collector, they are sent to the secondary dust collector. The secondary dust collector mixes the airflows from the seed cotton cleaning area and the ginning area output from the primary dust collector, exchanges heat and removes dust, and then discharges the clean air flow into the workshop. Reduce the air supply volume of the clean air flow to the drying tower area in the seed cotton cleaning area, increase the air supply volume of the clean air flow to the ginning area, and balance the temperature in the workshop.

2. The air flow circulation and purification method for the cotton processing workshop according to claim 1, wherein The drying tower is equipped with an electric heating fan. The output of the secondary dust collector is provided with a drying branch. The outdoor air flow input to the electric heating fan exchanges heat with the clean air flow in the drying branch and is then supplied into the electric heating fan.

3. The air flow circulation and purification method for the cotton processing workshop according to claim 1 or 2, characterized in that, The impurity discharge port of the primary dust collector is connected to the sterile seed collecting dust cage to convey the fibers collected by the primary dust collector to the sterile seed collecting dust cage.

4. The air flow circulation and purification method for the cotton processing workshop according to claim 1, characterized in that, The workshop is divided into multiple temperature control areas. Temperature sensors and clean air flow discharge ports are respectively provided in each temperature control area. According to the temperature in the temperature control area monitored by the temperature sensor, the air supply volume of the clean air flow discharge port is adjusted.

5. The air flow circulation and purification method for the cotton processing workshop according to claim 4, wherein The clean air flow discharge port is provided with an exhaust fan.

6. The air flow circulation and purification method for a cotton processing workshop according to claim 4 or 5, characterized in that A fresh air system is also provided. The fresh air system inlet pipe and the fresh air system exhaust pipe are heat-exchanged through a heat exchanger.

7. The air flow circulation and purification method for the cotton processing workshop according to claim 1, wherein In the seed cotton cleaning area, the seed cotton separator is connected to the primary dust collector through an external cotton suction fan, the inclined down-draft seed cleaner is connected to the primary dust collector through a cyclone and a down-draft fan, and the image separator is connected to the primary dust collector through an image fan.

8. The air flow circulation and purification method for the cotton processing workshop according to claim 1 or 7, characterized in that, In the ginning area, the inclined down-draft seed cleaner is connected to the primary dust collector through a cyclone and an internal suction fan, the lint cleaner is connected to the primary dust collector through a lint cleaning fan, the sterile seed collecting dust cage is connected to the primary dust collector through a sterile seed fan, and the cotton collecting dust cage is connected to the primary dust collector through a cotton collecting fan.

9. The air flow circulation and purification method for the cotton processing workshop according to claim 8, characterized in that The first fan group and the second fan group are arranged in the annex platform area divided in the dust removal area. The first fan group and the second fan group are connected to other equipment through pipelines.

10. The air flow circulation and purification method for the cotton processing workshop according to claim 9, characterized in that, A sound insulation cover is provided outside the annex platform area. An isolation wall is provided between the seed cotton cleaning area and the ginning area, and a ventilation door that can be opened and closed is provided on the isolation wall.

Images