Dust removal and filtration system of coating machine

Abstract

A dust removal and filtration system of a coating machine comprises a coating machine main machine, a main air cabinet and a main motor, and a bypass pipe is further connected between a first exhaust main pipe and a second exhaust main pipe; a first valve is arranged on the bypass pipe, a second valve is arranged on the first exhaust main pipe close to the main air cabinet, the first valve is used for controlling on-off of pipelines among the first exhaust main pipe, the bypass pipe and the second exhaust main pipe, the second valve is used for controlling on-off of pipelines among the first exhaust main pipe, the main air cabinet and the second exhaust main pipe, and the main air cabinet is of a vertical structure. A cartridge filter and a high-efficiency filter are arranged in the main air cabinet, and the cartridge filter is positioned below the high-efficiency filter; a bypass fume cupboard is further connected in series in the pipeline of the bypass pipe, the bypass pipe on the air inlet side of the bypass fume cupboard is a vertical pipe section, and a medium efficiency filter is arranged in the bypass fume cupboard. The installation mode of the filter cartridge is changed, the filter cartridge filter is installed in the vertical direction and fixed in a quick clamping mode, installation is easy, and the sealing effect is good.

Description

Technical Field

[0001] This utility model relates to the field of dust removal equipment, specifically to a dust removal and filtration system for a coating machine. Background Technology

[0002] Film coating machines are mainly used in the pharmaceutical, food, and biological product manufacturing industries. They can coat various tablets, pills, candies, and other products with various organic and water-soluble films. Typically, the uncoated tablets or refills undergo continuous and complex trajectory movements within the enclosed coating drum of the machine. The coating medium is sprayed onto the surface of the tablets or refills through a spray gun or dropper, and simultaneously dried by filtered and heated hot air. Meanwhile, under the influence of the hot air from the inlet system, some of the coating medium is dried by the hot air before it comes into contact with the surface of the tablets or refills and drifts to the exhaust vent. This exhaust system, also known as the coating machine's dust removal and filtration system, then filters the medium before discharging it.

[0003] Existing dust removal and filtration systems for coating machines, such as Figure 1 As shown, the exhaust port of the coating machine main unit 1 is connected to the upper air inlet of the exhaust cabinet 2 via the first exhaust main pipe 5, and the lower air outlet of the exhaust cabinet 2 is connected to the main motor 3 via the second exhaust main pipe 6. A bypass pipe 7 is also connected between the first exhaust main pipe 5 and the second exhaust main pipe 6. A first valve 8 is provided on the bypass pipe 7, and a second valve 9 is provided on the first exhaust main pipe 5 near the exhaust cabinet. The first valve 8 is used to control the connection between the first exhaust main pipe 5 and the second exhaust main pipe 6 through the bypass pipe 7, and the second valve 9 is used to control the connection between the first exhaust main pipe 5 and the second exhaust main pipe 6 through the exhaust cabinet 2. Inside the exhaust cabinet 2, the H9 high-efficiency filter cartridge 4 is installed at a 45° upward angle via a filter cartridge bracket. The main motor 3 provides exhaust power for the entire exhaust system. The existing dust removal and filtration system of this coating machine has the following defects and deficiencies:

[0004] 1. The existing exhaust system only has one set of H9 high-efficiency filter cartridges. The filter cartridge's filtration diameter is insufficient, which will cause fine particles to be carried outdoors by the wind.

[0005] 2. The filter cartridge has an unreasonable design. The filter cartridge is installed at a 45° angle, which is inconvenient for installation. There is a downward force between the filter cartridge and the support. Over time, the fixed support will bend, causing the plane of the filter cartridge to be out of level with the air outlet.

[0006] 3. The bypass structure of the exhaust system is poorly designed. The bypass is straight and there is no filter device. When the coating machine is cleaning, the exhaust is directly discharged to the outside through the bypass. Inevitably, some dust will be discharged directly to the outside through the bypass.

[0007] 4. The air inlet and outlet of the filter cartridge are poorly designed, resulting in dust accumulation. Utility Model Content

[0008] Based on this, the present invention provides a dust removal and filtration system for coating machines, which aims to solve the problem of coating powder passing through the dust removal system and going outdoors, causing pollution to the air and environment, while also solving the problem of cleaning the exhaust pipe, thus saving a lot of manpower and material resources.

[0009] To achieve the above objectives, this utility model provides a dust removal and filtration system for a coating machine, including a coating machine main unit, a main air handling unit, and a main motor. The exhaust port of the coating machine main unit is connected to the air inlet of the main air handling unit through a first exhaust pipe, and the exhaust port of the main air handling unit is connected to the main motor through a second exhaust pipe. A bypass pipe is also connected between the first exhaust pipe and the second exhaust pipe. A first valve is provided on the bypass pipe, and a second valve is provided on the first exhaust pipe near the main air handling unit. The first valve is used to control the flow of the pipeline between the first exhaust pipe, the bypass pipe, and the second exhaust pipe, and the second valve is used to control the flow of the pipeline between the first exhaust pipe, the main air handling unit, and the second exhaust pipe.

[0010] The main air handling unit has a vertical structure. Inside the main air handling unit are a cartridge filter and a high-efficiency filter. The cartridge filter is located below the high-efficiency filter. The air inlet of the main air handling unit is located on its side and opposite to the cartridge filter. The air outlet of the main air handling unit is located on its top.

[0011] The bypass pipe also has a bypass fume hood connected in series, and the bypass pipe on the air inlet side of the bypass fume hood is a vertical pipe section. The bypass fume hood is equipped with a medium-efficiency filter.

[0012] As a further preferred technical solution of this utility model, the first valve and / or the second valve are electric valves.

[0013] As a further preferred technical solution of this utility model, the bypass pipe on the air outlet side of the bypass hood is a horizontal pipe section, and the bypass pipe is connected to the first exhaust main pipe through this horizontal pipe section.

[0014] As a further preferred technical solution of this utility model, the main air handling unit contains multiple cartridge filters, which are arranged vertically.

[0015] As a further preferred technical solution of this utility model, the cartridge filter is provided with a triangular buckle, and the cartridge filter is detachably connected to the main air handling unit through the triangular buckle.

[0016] As a further preferred technical solution of this utility model, the cartridge filter is fixed to the main air handling unit by spring-loaded ball bearings.

[0017] As a further preferred technical solution of this utility model, a powder receiving cabinet is provided at the lower part of the main air handling unit.

[0018] Compared with the prior art, the present invention can achieve the following beneficial effects:

[0019] 1) Change the installation method of the filter cartridge. The filter cartridge filter is installed vertically and fixed with quick clips, which is not only easy to install, but also has a good sealing effect;

[0020] 2) Install a high-efficiency filter at the rear end of the cartridge filter to prevent poor sealing of the cartridge or fine particles from being discharged directly outdoors after passing through the cartridge;

[0021] 3) Change the air intake method of the main air handling unit from top air intake to bottom air intake to prevent dust from accumulating at the air damper;

[0022] 4) Changing the bypass structure from horizontal to vertical can change the direction of airflow and dust flow. The vertical direction can greatly reduce dust residue in the pipe.

[0023] 5) Adding a filter device (medium efficiency filter) to the bypass pipe can prevent dust from being discharged outdoors during cleaning and maintenance. Attached Figure Description

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0025] Figure 1 This is a schematic diagram of the structure of a traditional dust removal and filtration system for a coating machine.

[0026] Figure 2 This is a schematic diagram of the dust removal and filtration system of the coating machine according to this utility model.

[0027] In the diagram: 1. Coating machine main unit, 2. Exhaust fan cabinet, 3. Main motor, 4. H9 high-efficiency filter cartridge, 5. First exhaust main pipe, 6. Second exhaust main pipe, 7. Bypass pipe, 8. First valve, 9. Second valve, 10. Bypass fan cabinet, 11. Medium-efficiency filter, 12. Main fan cabinet, 13. Powder receiving cabinet, 14. High-efficiency filter.

[0028] The purpose, features, and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Terms such as "upper," "lower," "left," "right," "middle," and "one" used in the preferred embodiments are merely for clarity of description and are not intended to limit the scope of implementation of the present invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of implementation of the present invention.

[0030] The high-efficiency filter and medium-efficiency filter used in this invention are both conventional filtration devices. The high-efficiency filter refers to a high-efficiency air filter, which can filter particles in the air and block particles or dust with a diameter of 0.5 μm or larger. The medium-efficiency filter is of a lower level than the high-efficiency filter and can block particles or dust in the air with a diameter of 1-5 μm.

[0031] High-efficiency filters (HEPA filters) are air filters that can filter airborne particles, blocking particles or dust with a diameter of 0.5 μm or larger.

[0032] like Figure 2 As shown, this utility model provides a dust removal and filtration system for a coating machine, including a coating machine main unit 1, a main air cabinet 12, and a main motor 3. The exhaust port of the coating machine main unit 1 is connected to the air inlet of the main air cabinet 12 through a first exhaust pipe 5, and the air outlet of the main air cabinet 12 is connected to the main motor 3 through a second exhaust pipe 6. A bypass pipe 7 is also connected between the first exhaust pipe 5 and the second exhaust pipe 6. The fan of the main motor 3 is used to provide exhaust power for the entire dust removal and filtration system. A first valve 8 is provided on the bypass pipe 7, and a second valve 9 is provided on the first exhaust pipe 5 near the main air cabinet 12. The first valve 8 is used to control the opening and closing of the pipeline between the first exhaust pipe 5, the bypass pipe 7, and the second exhaust pipe 6, and the second valve 9 is used to control the opening and closing of the pipeline between the first exhaust pipe 5, the main air cabinet 12, and the second exhaust pipe 6.

[0033] The main air handling unit 12 has a vertical structure and a powder receiving cabinet 13 at its lower part. The main air handling unit 12 is equipped with a cartridge filter and a high-efficiency filter 14. The cartridge filter is located below the high-efficiency filter 14. There are multiple cartridge filters arranged vertically. The air inlet of the main air handling unit 12 is located on its side and opposite to the cartridge filter. The air outlet of the main air handling unit 12 is located at its top.

[0034] The bypass pipe 7 is also connected in series with a bypass fume hood 10. The bypass fume hood 10 is equipped with a medium-efficiency filter 11. The bypass pipe 7 on the air inlet side of the bypass fume hood 10 is a vertical pipe section, and the bypass pipe 7 on the air outlet side of the bypass fume hood 10 is a horizontal pipe section. The bypass pipe 7 is connected to the first exhaust main pipe 5 through the horizontal pipe section.

[0035] When the dust removal and filtration system of the coating machine is working normally, the first valve 8 is closed, the second valve 9 is open, the main motor 3 is started, and the airflow passes through the filter cartridge of the main air cabinet 12 and the high-efficiency filter 14 for filtration before being discharged outdoors through the main motor 3. When the equipment is cleaning or drying, the first valve 8 is open, the second valve 9 is closed, the main motor 3 is started, and the airflow passes through the medium-efficiency filter 11 in the bypass ventilation cabinet 10 before being discharged outdoors through the fan of the main motor 3.

[0036] In one specific embodiment, the cartridge filter is provided with a triangular buckle, and the cartridge filter is detachably connected to the main air handling unit 12 through the triangular buckle. The cartridge filter is fixed to the main air handling unit 12 by spring-loaded ball bearings.

[0037] This invention adds a new high-efficiency filter 14 above the cartridge filter to intercept fine dust, preventing dust from being discharged outside the main air handling unit 12. This reduces dust accumulation in the ductwork behind the main motor 3, reduces the frequency of ductwork cleaning, and also prevents dust from being discharged outdoors and polluting the air.

[0038] The bypass pipe 7 in this invention is initially installed vertically. Its function is to allow dust to fall under its own weight into the first exhaust duct 5 when the main motor 3's fan stops running, preventing dust accumulation in the bypass pipe 7. Additionally, the medium-efficiency filter 11 added to the bypass fume hood 10 can intercept dust, achieving filtration and purification as long as the bypass pipe 7 is open.

[0039] Although specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and various changes or modifications can be made to these embodiments without departing from the principles and essence of the present invention. The scope of protection of the present invention is defined only by the appended claims.

Claims

1. A coating machine dust removal filter system, comprising a coating machine main machine, a main air cabinet, a main motor, an air outlet of the coating machine main machine being connected with an air inlet of the main air cabinet through a first exhaust main pipe, an air outlet of the main air cabinet being connected with the main motor through a second exhaust main pipe, a bypass pipe being further connected between the first exhaust main pipe and the second exhaust main pipe; a first valve being arranged on the bypass pipe, a second valve being arranged on the first exhaust main pipe close to the main air cabinet, the first valve being used for controlling the on-off of the pipeline among the first exhaust main pipe, the bypass pipe and the second exhaust main pipe, the second valve being used for controlling the on-off of the pipeline among the first exhaust main pipe, the main air cabinet and the second exhaust main pipe, characterized in that: the main air cabinet is a vertical structure, a filter cartridge filter and a high-efficiency filter are arranged in the main air cabinet, the filter cartridge filter is located below the high-efficiency filter, the air inlet of the main air cabinet is located on the side of the main air cabinet and opposite to the filter cartridge filter, and the air outlet of the main air cabinet is located on the top of the main air cabinet; a bypass air cabinet is further connected in series in the pipeline of the bypass pipe, and the bypass pipe on the air inlet side of the bypass air cabinet is a vertical pipe section, and a medium-efficiency filter is arranged in the bypass air cabinet. The first valve and / or the second valve are electric valves. The bypass pipe on the air outlet side of the bypass air cabinet is a horizontal pipe section, and the bypass pipe is connected with the first exhaust main pipe through the horizontal pipe section.

2. The coater dedusting filtration system of claim 1, wherein, The filter cartridge filter in the main air cabinet is a plurality of filter cartridge filters, and the filter cartridge filters are all arranged vertically.

3. The coater dedusting filtration system of claim 1, wherein, A triangular buckle is arranged on the filter cartridge filter, and the filter cartridge filter is detachably connected with the main air cabinet through the triangular buckle.

4. The coater dedusting filtration system of claim 1, wherein, The filter cartridge filter is fixed to the main air cabinet by spring balls in a spring pressing mode.

5. The coater dedusting filtration system of claim 1, wherein, A powder receiving cabinet is arranged on the lower part of the main air cabinet.

6. The coater dedusting filtration system of claim 5, wherein, ​ 7. The coater dedusting filtration system of claim 1, wherein, ​

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