Superfine filtering device applied to pharmaceutical industry

Abstract

The utility model relates to the technical field of waste gas filtration, and discloses an ultra-fine filtration device applied to the pharmaceutical industry. The device comprises a shell box internally provided with a partition plate, a fan and a refined filtration box are arranged on the two sides of the shell box respectively, and an air inlet mechanism connected with the fan and a multi-way pipe connected with the refined filtration box are arranged in the shell box. A first baffle used for separating a left area and a right area and a second baffle which can rotate and is used for blocking the left area and the right area of the multi-way pipe are arranged in the multi-way pipe, a first motor used for driving the second baffle is arranged in the shell box, and two filter cartridges are arranged in the shell box; two ports at the bottom end of the multi-way pipe are butted with the top ends of the two filter cartridges, and two pistons capable of inflating the filter cartridges to realize reverse cleaning are movably arranged in the multi-way pipe. According to the utility model, the filter cartridge for rough filtration can be automatically cleaned, so that the complexity of manual cleaning is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas filtering, in particular to an ultra-fine filtering device applied to the pharmaceutical industry. Background Art

[0002] When the pharmaceutical industry is making medicines, due to factors such as drug grinding and drug reactions, a large amount of waste gas containing dust and harmful substances is easily generated. Direct discharge into the air is likely to cause environmental pollution. Therefore, it is necessary to filter and purify the dust waste gas generated in the pharmaceutical process. Some ultra-fine filtration devices with better filtration effects are generally divided into two filtration systems: coarse filtration and fine filtration. Coarse filtration is to preferentially filter out relatively large particles in the waste gas, such as dust and other substances. It is generally achieved through filtering materials such as filter cartridges or filter screens, and the subsequent fine filtration is generally performed through activated carbon, filter cotton and other filter materials to perform secondary filtration on the waste gas, which can effectively filter out finer harmful substances in the waste gas, such as odor, heavy metals, bacteria or toxicity.

[0003] Among them, the filter materials such as activated carbon used for fine filtration are generally disposable consumables, which cannot be reused and need to be replaced regularly, while the filter materials such as filter cartridges used for coarse filtration can be reused, but the existing exhaust gas filtration devices lack the self-cleaning function of coarse filtration equipment such as filter cartridges. In order to ensure the normal use of coarse filtration equipment such as filter cartridges, they need to be removed and cleaned regularly, which is cumbersome and inconvenient. Therefore, it is necessary to propose an ultra-fine filtration device for application in the pharmaceutical industry. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides an ultra-fine filtering device applied to the pharmaceutical industry.

[0005] The utility model is implemented by the following technical scheme: an outer shell box is provided with a partition inside, a fan and a fine filter box are respectively provided on both sides of the outer shell box, an air intake mechanism connected to the fan and a multi-way pipe connected to the fine filter box are respectively provided in the outer shell box, a first baffle for separating left and right areas and a second baffle rotatable for blocking the left and right areas of the multi-way pipe are provided in the multi-way pipe, a first motor for driving the second baffle is provided in the outer shell box, two filter cartridges are provided in the outer shell box, two through ports at the bottom ends of the multi-way pipe are connected to the top ends of the two filter cartridges, two pistons for inflating the filter cartridges to achieve reverse cleaning are movably provided in the multi-way pipe, and second motors for driving the two pistons to rise and fall are respectively provided on both sides of the outer shell box.

[0006] As a further improvement of the above solution, the air intake mechanism includes an air inlet pipe provided on the partition plate. The air inlet of the air inlet pipe extends outside the outer shell box and is fixedly connected to the air outlet of the fan. A rotatable guide pipe is rotatably sleeved on the air inlet pipe. A partition cylinder connected to the guide pipe is rotatably installed in the air inlet pipe. An air outlet notch is provided at the bottom end of the guide pipe. A driving rod is rotatably installed in the multi-way pipe. The top and bottom ends of the driving rod extend outside the multi-way pipe and are respectively connected to the output shaft of the first motor and the top end of the partition cylinder. The driving rod is fixedly connected to the second baffle.

[0007] As a further improvement of the above solution, rubber stop strips are provided on both inner walls of the two sides of the outer shell box, and both rubber stop strips are in contact with one side of the air inlet pipe and the guide pipe.

[0008] As a further improvement of the above solution, a water inlet valve and a water outlet valve are respectively provided on one side and the bottom of the outer shell box. Filtered water is contained in the outer shell box, and the water level of the filtered water is slightly higher than the bottom end of the guide pipe.

[0009] As a further improvement of the above solution, two curved rods are rotatably installed in the outer shell box. One ends of the two curved rods are respectively fixedly connected to the output shafts of the two second motors. Pulling rods are rotatably installed on the two curved rods. The bottom ends of the two pulling rods are respectively hinged to the top ends of the two pistons.

[0010] As a further improvement of the above solution, a plurality of annularly distributed ventilation holes are provided on the piston, and a plug cover is slidably installed on the piston.

[0011] As a further improvement of the above solution, two hollow plug plates are provided in the multi-way pipe, and the hollow plug plates correspond to the plurality of ventilation holes on the piston.

[0012] As a further improvement of the above solution, an inlet and an outlet are respectively provided at the top and bottom of the fine filter box, and activated carbon is filled in the fine filter box.

[0013] As a further improvement of the above solution, the outer shell box is divided into upper and lower parts, and the two parts can be disassembled. The partition plate is arranged in the lower half of the outer shell box.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] Through the cooperation of structures such as the multi-way pipe, the piston, and the second motor, the reverse restart cleaning of the filter cartridge can be realized, and the piston inflation method has faster and stronger inflation. Compared with the method of backwashing and cleaning through a fan, the backwashing and cleaning effect on the filter cartridge is better;

[0016] Through the cooperation of the air intake mechanism composed of structures such as the air inlet pipe, the partition cylinder, and the guide pipe with structures such as the multi-pass pipe, the first baffle, and the second baffle, the interior of the filtration device can be divided into two regions on the left and right, enabling the two filter cartridges to synchronously carry out waste gas filtration and backwashing cleaning work. Thus, the cleaning of the filter cartridges will not delay the normal filtration of waste gas. At the same time, the cooperation between the air inlet pipe and the partition cylinder causes the incoming waste gas to descend in a rotating manner and finally be discharged through the air outlet notch at the bottom of the guide pipe. During this process, larger particulate matters in the waste gas airflow will fall into the filtration water, thereby enabling the waste gas to be preliminarily filtered one step before passing through the filter cartridges, which can reduce the filtration burden on the filter cartridges. By replacing the filtration water through the water inlet valve and the drain valve, the cleaning of the impurities filtered out in the filtration device can be completed, and the entire filtration process can be automatically completed, making the use of the filtration device more convenient;

[0017] By providing vent holes and plug caps on the piston, when the piston rises, the external airflow can enter the multi-pass pipe through the vent holes. When the piston descends, the plug cap will rise under the reverse push of air pressure to block the multiple vent holes, avoiding insufficient air inflation during backwashing cleaning and preventing negative pressure from being generated in the multi-pass pipe, which may cause the filter cartridges to inhale air from the outside to the inside during backwashing cleaning and affect the backwashing cleaning effect. The hollow plug plate can block the multiple vent holes when the piston stops, preventing waste gas from leaking out of the multi-pass pipe through the vent holes during the filtration work of the filter cartridges. Brief Description of the Drawings

[0018] Figure 1 Front perspective view of the ultra-precision filtration device of the present utility model applied to the pharmaceutical industry;

[0019] Figure 2 Rear perspective view of the ultra-precision filtration device of the present utility model applied to the pharmaceutical industry;

[0020] Figure 3 Cross-sectional view of the housing of the ultra-precision filtration device of the present utility model applied to the pharmaceutical industry;

[0021] Figure 4 Separate housing view of the ultra-precision filtration device of the present utility model applied to the pharmaceutical industry;

[0022] Figure 5 Internal structure view of the ultra-precision filtration device of the present utility model applied to the pharmaceutical industry;

[0023] Figure 6 Cross-sectional view of the multi-pass pipe and the piston;

[0024] Figure 7 For Figure 6 Enlarged view of part A in

[0025] Figure 8It is a planar cross-sectional view of the ultra-fine filtering device of the utility model applied to the pharmaceutical industry.

[0026] Description of main symbols:

[0027] 1. Outer casing; 2. Partition; 3. Rubber baffle; 4. Fan; 5. Air inlet duct; 6. Multi-way duct; 7. First motor; 8. Driving rod; 9. Partition cylinder; 10. Guide tube; 11. Filter cartridge; 12. First baffle; 13. Second baffle; 14. Second motor; 15. Curved rod; 16. Pull rod; 17. Piston; 18. Vent; 19. Plug cover; 20. Hollow plug plate; 21. Fine filter box. DETAILED DESCRIPTION

[0028] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0029] Please combine Figures 1 to 8 The ultra-fine filtering device applied to the pharmaceutical industry of this embodiment comprises an outer shell box 1 with a partition 2 arranged inside, the partition 2 is provided with a socket for inserting a filter cartridge 11 and an air inlet pipe 5, a fan 4 and a fine filter box 21 are respectively arranged on both sides of the outer shell box 1, an air intake mechanism connected to the fan 4 and a multi-way pipe 6 connected to the fine filter box 21 are respectively arranged in the outer shell box 1, a first baffle 12 for separating left and right areas and a second baffle 13 rotatable for blocking the left and right areas of the multi-way pipe 6 are arranged in the multi-way pipe 6, a sleeve for accommodating a driving rod 8 is arranged in the middle of the first baffle 12, a first motor 7 for driving the second baffle 13 is arranged in the outer shell box 1, two filter cartridges 11 are arranged in the outer shell box 1, two through ports at the bottom end of the multi-way pipe 6 are connected to the top ends of the two filter cartridges 11, two pistons 17 for inflating the filter cartridge 11 to achieve reverse cleaning are movably arranged in the multi-way pipe 6, and second motors 14 for driving the two pistons 17 to rise and fall are respectively arranged on both sides of the outer shell box 1.

[0030] The air intake mechanism includes an air inlet pipe 5 arranged on the partition 2, the air inlet of the air inlet pipe 5 extends to the outside of the outer shell box 1 and is fixedly connected to the air outlet of the fan 4, a rotatable guide pipe 10 is rotatably sleeved on the air inlet pipe 5, a partition tube 9 connected to the guide pipe 10 is rotatably installed in the air inlet pipe 5, and an air outlet notch is provided at the bottom end of the guide tube 10, a driving rod 8 is rotatably installed in the multi-way pipe 6, the top and bottom ends of the driving rod 8 both extend to the outside of the multi-way pipe 6 and are respectively connected to the output shaft of the first motor 7 and the top end of the partition tube 9, and the driving rod 8 is fixedly connected to the second baffle 13.

[0031] Through the above technical solution, the intake mechanism composed of structures such as the air inlet pipe 5, the partition cylinder 9, and the guide pipe 10 cooperates with structures such as the multi-way pipe 6, the first baffle 12, and the second baffle 13, which can divide the interior of the filtering device into two regions on the left and right, enabling the two filter cartridges 11 to synchronously carry out waste gas filtration and backwashing cleaning work, so that the cleaning of the filter cartridges 11 will not delay the normal filtration of the waste gas. At the same time, the cooperation between the air inlet pipe 5 and the partition cylinder 9 causes the incoming waste gas to descend in a rotating manner and finally be discharged through the air outlet notch at the bottom end of the guide pipe 10. During this process, larger particulate matter in the waste gas airflow will fall into the filtering water, so that the waste gas can be preliminarily filtered one step before passing through the filter cartridges 11, thereby reducing the filtering burden on the filter cartridges 11.

[0032] Rubber strips 3 are provided on both inner walls of the outer shell box 1, and both rubber strips 3 are in contact with one side of the air inlet pipe 5 and the guide pipe 10.

[0033] Through the above technical solution, the air inlet pipe 5 and the guide pipe 10, together with the two rubber strips 3, can divide the interior of the outer shell box 1 into two regions on the left and right, so that the left and right filter cartridges 11 can carry out filtration work and reverse cleaning work separately, without interfering with each other, and avoiding the influence of the blower 4 pressurizing the interior of the outer shell box 1 on the reverse flushing cleaning of the filter cartridges 11 from the inside out, ensuring the cleaning effect of the reverse inflation cleaning.

[0034] An inlet valve and an outlet valve are respectively provided on one side and the bottom of the outer shell box 1. Filtering water is contained in the outer shell box 1, and the water level of the filtering water is slightly higher than the bottom end of the guide pipe 10.

[0035] Through the above technical solution, in order to avoid excessive particulate dust in the waste gas causing an excessive filtering burden on the filter cartridges 11, by placing filtering water at the bottom of the outer shell box 1 and cooperating with the intake mechanism, the waste gas can be filtered first. At the same time, through the inlet valve and the outlet valve, the internal impurities of the filtering device can be discharged by discharging the waste water, making the discharge of impurities more convenient.

[0036] Two curved rods 15 are rotatably installed in the outer shell box 1. One ends of the two curved rods 15 are respectively fixedly connected to the output shafts of the two second motors 14. Pulling rods 16 are rotatably installed on both curved rods 15, and the bottom ends of the two pulling rods 16 are respectively hinged to the top ends of the two pistons 17.

[0037] Through the above technical solution, the cooperation of the curved rod 15 and the pulling rod 16 can drive the piston 17 to quickly move up and down, making the air discharge from the filter cartridge 11 more rapid, so that the cleaning effect on the filter cartridge 11 is better.

[0038] A plurality of annularly distributed ventilation holes 18 are provided on the piston 17, and a plug cover 19 is slidably installed on the piston 17.

[0039] Through the above technical solution, when the piston 17 rises, the external air flow can enter the multi-pass pipe 6 through the ventilation holes 18. When the piston 17 descends, the plug cover 19 will rise under the reverse push of air pressure to block the plurality of ventilation holes 18, avoiding insufficient air inflation during backwashing and preventing negative pressure from being generated in the multi-pass pipe 6, which may cause the filter cartridge 11 to inhale air from the outside to the inside during backwashing and affect the backwashing effect.

[0040] Two hollow blocking plates 20 are arranged in the multi-pass pipe 6, and the hollow blocking plates 20 correspond to the plurality of ventilation holes 18 on the piston 17.

[0041] Through the above technical solution, the hollow blocking plates 20 can block the plurality of ventilation holes 18 when the piston 17 stops, avoiding the leakage of waste gas to the outside of the multi-pass pipe 6 through the ventilation holes 18 during the filtering operation of the filter cartridge 11.

[0042] An inlet and an outlet are respectively arranged at the top and bottom of the fine filter box 21, and the fine filter box 21 is filled with activated carbon.

[0043] Through the above technical solution, the fine filter box 21 can perform fine filtration on the waste gas to remove finer dust and harmful substances in the air.

[0044] The outer shell box 1 is divided into upper and lower parts, which can be disassembled from each other, and the partition plate 2 is arranged in the lower half of the outer shell box 1.

[0045] Through the above technical solution, the detachable design of the upper and lower parts of the outer shell box 1 makes the whole filtering device easy to disassemble, assemble and maintain.

[0046] The implementation principle of an ultra-fine filtering device applied to the pharmaceutical industry in the embodiment of the present application is as follows:

[0047] The first step: Before use, connect the air inlet of the fan 4 to the external waste gas absorption pipe, connect the outlet at the bottom end of the fine filter box 21 to the external waste gas discharge pipe, and then connect the water inlet valve and the water outlet valve to the external water supply pipe and the drain pipe respectively;

[0048] Second step: During use, the fan 4 is started and the waste gas is conveyed into the air inlet pipe 5. Subsequently, it rotates downward around the partition cylinder 9 in the air inlet pipe 5. During this process, the air flow and the larger dust in the air flow will fall into the filtered water at the bottom of the outer shell box 1 driven by the air flow, and the air flow will enter the right area of the outer shell box 1 through the air outlet notch on one side of the guide pipe 10. During this process, the side facing the air outlet notch of the guide pipe 10 is the current filtering area. When the waste gas air flow passes through the right filter cartridge 11 and enters the right half area of the multi-pass pipe 6, the right filter cartridge 11 can achieve secondary filtering of the waste gas air flow. Subsequently, the waste gas air flow after rough filtering enters the fine filtering box 21 through the right half of the multi-pass pipe 6 for fine filtering, and is discharged into the waste gas discharge pipe after the filtering is completed, thus completing the filtering work of the waste gas;

[0049] Third step: When the right filter cartridge 11 needs to be cleaned after being used for a period of time, the first motor 7 drives the second baffle 13, the partition cylinder 9 and the guide pipe 10 to rotate through the driving rod 8, so that the three rotate 180 degrees to turn to the left. At this time, the waste gas will be discharged to the area of the left filter cartridge 11, so that the left filter cartridge 11 filters the waste gas. After the second baffle 13 turns, it blocks the right side of the multi-pass pipe 6. At this time, the second motor 14 on the right is started, and the second motor 14 drives the piston 17 to quickly lift and lower through the curved rod 15 and the pull rod 16. Since the port of the multi-pass pipe 6 in this area leading to the fine filtering box 21 is blocked by the second baffle 13, the air flow squeezed by the piston 17 will enter the filter cartridge 11 and diffuse in a reverse direction outside the filter cartridge 11, so as to perform reverse flushing cleaning on the filter cartridge 11 from the inside to the outside, thus completing the automatic cleaning work of the filter cartridge 11. And the two filter cartridges 11 can be used and cleaned alternately, so that the normal filtering of the waste gas will not be affected when the filter cartridge 11 is being cleaned.

[0050] The above-mentioned embodiments are only the preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited by this. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention belong to the protection scope required by the present invention.

Claims

1. An ultra-fine filtering device for use in the pharmaceutical industry, comprising an outer shell box (1) with a partition plate (2) disposed therein, a fan (4) and a fine filter box (21) being disposed on both sides of the outer shell box (1), characterized in that: The outer shell box (1) is provided with an air intake mechanism connected to the fan (4) and a multi-way tube (6) connected to the fine filter box (21), the multi-way tube (6) is provided with a first baffle (12) for separating left and right areas and a second baffle (13) that can be rotated to block the left and right areas of the multi-way tube (6), the outer shell box (1) is provided with a first motor (7) for driving the second baffle (13), the outer shell box (1) is provided with two filter cartridges (11), the two openings at the bottom end of the multi-way tube (6) are connected to the top ends of the two filter cartridges (11), the multi-way tube (6) is movably provided with two pistons (17) that can inflate the filter cartridges (11) to achieve reverse cleaning, and the two sides of the outer shell box (1) are provided with second motors (14) for driving the two pistons (17) to rise and fall.

2. The ultra-fine filtration device used in the pharmaceutical industry according to claim 1, characterized in that: The air intake mechanism comprises an air intake pipe (5) arranged on the partition (2), the air inlet of the air intake pipe (5) extending to the outside of the outer casing (1) and fixedly connected to the air outlet of the fan (4), a rotatable guide pipe (10) being rotatably sleeved on the air intake pipe (5), a partition cylinder (9) connected to the guide pipe (10) being rotatably installed in the air intake pipe (5), an air outlet notch being provided at the bottom end of the guide pipe (10), a drive rod (8) being rotatably installed in the multi-way pipe (6), the top and bottom ends of the drive rod (8) both extending to the outside of the multi-way pipe (6) and being respectively connected to the output shaft of the first motor (7) and the top end of the partition cylinder (9), and the drive rod (8) being fixedly connected to the second baffle (13).

3. The ultra-fine filtration device for use in the pharmaceutical industry as claimed in claim 2, characterized in that: Rubber baffles (3) are provided on both inner walls of the outer shell box (1), and the two rubber baffles (3) are in contact with one side of the air inlet pipe (5) and the guide pipe (10).

4. The ultra-fine filtration device for use in the pharmaceutical industry as claimed in claim 2, characterized in that: A water inlet valve and a water outlet valve are respectively provided on one side and the bottom of the outer shell box (1). Filtered water is contained in the outer shell box (1), and the water level of the filtered water is slightly higher than the bottom end of the guide tube (10).

5. The ultra-fine filtration device for use in the pharmaceutical industry as claimed in claim 1, characterized in that: Two crankshafts (15) are rotatably mounted in the outer shell box (1), one end of the two crankshafts (15) is fixedly connected to the output shafts of the two second motors (14), and a pull rod (16) is rotatably mounted on the two crankshafts (15), and the bottom ends of the two pull rods (16) are hinged to the top ends of the two pistons (17).

6. The ultra-fine filtration device for use in the pharmaceutical industry as claimed in claim 1, characterized in that: The piston (17) is provided with a plurality of vent holes (18) distributed in an annular shape, and a blocking cover (19) is slidably mounted on the piston (17).

7. The ultra-fine filtration device for use in the pharmaceutical industry as claimed in claim 6, characterized in that: Two hollow blocking plates (20) are arranged in the multi-way pipe (6), and the hollow blocking plates (20) correspond to the multiple vent holes (18) on the piston (17).

8. The ultra-fine filtration device for use in the pharmaceutical industry as claimed in claim 1, characterized in that: An inlet and an outlet are respectively arranged at the top and the bottom of the fine filter box (21), and the fine filter box (21) is filled with activated carbon.

9. The ultra-fine filtration device for use in the pharmaceutical industry according to claim 1, characterized in that: The outer shell box (1) is divided into two parts, an upper part and an lower part, which can be separated, and the partition plate (2) is arranged in the lower part of the outer shell box (1).

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