CN117085442B - Pharmacy waste gas filters pretreatment equipment - Google Patents
Pharmacy waste gas filters pretreatment equipment Download PDFInfo
- Publication number
- CN117085442B CN117085442B CN202311213449.1A CN202311213449A CN117085442B CN 117085442 B CN117085442 B CN 117085442B CN 202311213449 A CN202311213449 A CN 202311213449A CN 117085442 B CN117085442 B CN 117085442B
- Authority
- CN
- China
- Prior art keywords
- dust
- cavity
- waste gas
- dust removal
- filter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000002912 waste gas Substances 0.000 title claims abstract description 54
- 239000000428 dust Substances 0.000 claims abstract description 255
- 239000007789 gas Substances 0.000 claims abstract description 62
- 239000004744 fabric Substances 0.000 claims abstract description 29
- 238000001914 filtration Methods 0.000 claims abstract description 27
- 238000005245 sintering Methods 0.000 claims abstract description 27
- 239000010826 pharmaceutical waste Substances 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 9
- 239000000835 fiber Substances 0.000 claims abstract description 8
- 238000007664 blowing Methods 0.000 claims description 26
- 238000005192 partition Methods 0.000 claims description 24
- 239000007788 liquid Substances 0.000 claims description 20
- 238000003860 storage Methods 0.000 claims description 19
- 239000004642 Polyimide Substances 0.000 claims description 13
- 229920001721 polyimide Polymers 0.000 claims description 13
- 230000003014 reinforcing effect Effects 0.000 claims description 8
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 7
- 239000004917 carbon fiber Substances 0.000 claims description 7
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 239000002121 nanofiber Substances 0.000 claims description 5
- 239000002759 woven fabric Substances 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 239000002699 waste material Substances 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 3
- 239000002245 particle Substances 0.000 abstract description 11
- 238000011084 recovery Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 9
- 239000000758 substrate Substances 0.000 description 8
- 238000000576 coating method Methods 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 6
- 239000003814 drug Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- -1 polytetrafluoroethylene Polymers 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000008186 active pharmaceutical agent Substances 0.000 description 1
- 239000002671 adjuvant Substances 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 230000002301 combined effect Effects 0.000 description 1
- 230000009514 concussion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000010041 electrostatic spinning Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000002496 gastric effect Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000011045 prefiltration Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229940126589 solid medicine Drugs 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/10—Combinations of devices covered by groups B01D45/00, B01D46/00 and B01D47/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention relates to the technical field of waste gas treatment and discloses pharmaceutical waste gas filtering pretreatment equipment which comprises a first-stage dust removing box, a second-stage dust removing box and a third-stage dust removing box, wherein the lower part of the inner cavity of the first-stage dust removing box is an ultrasonic wet dust removing cavity, and the upper part of the inner cavity of the first-stage dust removing box is a cyclone dust removing cavity; the upper part of the inner cavity of the secondary dust removal box is a filter cavity of the sintered plate filter element, and the lower part of the inner cavity is a first dust hopper; the upper part of the inner cavity of the three-stage dust removal box is a dust removal cloth bag filter cavity, and the lower part of the inner cavity is a second dust collection hopper communicated with the dust removal cloth bag filter cavity. The primary dust removing box can remove some large particle dust in dust-containing waste gas in advance, the sintering plate filter element in the secondary dust removing box mainly filters superfine dust in the waste gas, the filter bag which takes superfine fiber mesh as a filter layer material is used in the tertiary dust removing box, the finer primary dust in the waste gas can be intensively filtered and treated, and finally 95% of dust in the waste gas can be effectively prevented from entering the subsequent recovery treatment equipment of pharmaceutical waste gas.
Description
Technical Field
The invention relates to the technical field of waste gas treatment, in particular to pharmaceutical waste gas filtering pretreatment equipment.
Background
The tablet is prepared by mixing the raw materials and adjuvants of the medicine to obtain tablet or other solid medicines, and coating to cover the bad smell of the medicine and increase the stability of the medicine. In addition, in the filtration of the drug in production, in order to better release the active pharmaceutical ingredient, it is also necessary to spray enteric or gastric polymer coating liquid onto the tablets, in which process an air flow is generated from the fluidized bed or coating machine, forming very fine, viscous and highly concentrated dust with poor air permeability. Dust generated in the production process is generally accompanied by hot air, organic solvents and saccharides, and has certain viscosity and is difficult to treat.
The existing coating waste gas treatment method is that a sintering plate dust remover is arranged behind a tail gas exhaust system, and the sintering plate dust remover adopts a unique wave-shaped plastic plate filter core to replace a traditional cloth bag, and the plastic plate is of a rigid structure, cannot deform and has no framework abrasion, so that the service life is long, and under some working conditions, the service life of the plastic plate dust remover is more than 10 times that of the cloth bag. For example, chinese patent publication No. CN207575995U discloses a sintered plate dust collector filter core, which comprises a sintered plate substrate, a polytetrafluoroethylene coating, an upper connecting seat, a fixing bolt, a sealing ring, and a lower connecting seat; the sintering plate substrate consists of a first sintering plate substrate and a second sintering plate substrate, edges of two sides of the first sintering plate substrate and the second sintering plate substrate are flat bonding surfaces, the two sintering plates are bonded into a whole through the bonding surfaces, and a wavy back blowing channel is formed in the formed sintering plate substrate; the dustproof polytetrafluoroethylene coating covers the outer surface of the sintered plate matrix; the upper connecting seat is provided with a connecting hole on the surface of the base body of the connecting sintering plate, and the upper working surface of the upper connecting seat is provided with an air hole; threaded holes are formed in two ends of one face of the vent hole; the fixing bolt is arranged on the upper connecting seat through a threaded hole; the sealing ring is arranged in a gap at the joint of the sintering plate substrate and the upper connecting seat; the lower connecting seat is inserted into the lower end of the sintering plate matrix. The surface of the sintered plate matrix adopted in the patent is subjected to advanced treatment, has fine and uniform pore diameter, is hydrophobic, is not easy to adhere to dust with higher water content, and can play a good role in filtering dust, so that the sintered plate matrix is suitable for treating waste gas with higher water content and higher fibrous dust content generated in the drug coating process. However, most of the existing sintering plate dust collectors can separate dust with the particle size of more than or equal to 0.5 μm, namely, small-particle dust is discharged after passing through the dust collector, and finally, the subsequent tail gas recovery device is still easy to be blocked.
Therefore, it is necessary to provide a pharmaceutical waste gas filtering pretreatment apparatus capable of sufficiently filtering dust in pharmaceutical waste gas.
Disclosure of Invention
In view of the above, the invention provides pharmaceutical waste gas filtering pretreatment equipment, which has the following specific technical scheme:
a pharmaceutical waste gas filtering pretreatment device, comprising:
the lower part of the inner cavity of the primary dust removal box is an ultrasonic wet dust removal cavity, and the upper part of the inner cavity of the primary dust removal box is a cyclone dust removal cavity; a primary waste gas inlet connected with a waste gas inlet pipe is formed in one side of the bottom of the ultrasonic wet dust collection cavity, a primary air outlet is formed in the top of the cyclone dust collection cavity, and a primary exhaust pipe is externally connected with the primary air outlet; a draught fan I and a one-way air inlet valve I are arranged at the first-stage waste gas inlet;
the upper part of the inner cavity of the secondary dust removal box is a filter cavity of the sintered plate filter element, and the lower part of the inner cavity is a first dust hopper; the sintering plate filter element filter cavity is divided into an upper air purifying chamber and a lower dust removing chamber by a first horizontal partition plate at intervals corresponding to the cavity, and the lower dust removing chamber is communicated with the first dust collecting hopper; a secondary waste gas inlet is formed in one side of the bottom of the lower dust removing chamber; the first branch port of the second-stage exhaust gas inlet is connected with the exhaust gas inlet pipe, the second branch port is connected with the first-stage exhaust pipe, the first branch port is provided with a second induced draft fan and a second unidirectional air inlet valve, and the second branch port is provided with a third induced draft fan and a third unidirectional air inlet valve; a secondary air outlet is arranged on one side of the upper air purifying chamber, which is opposite to the secondary exhaust gas inlet; the bottom of the first horizontal partition plate is provided with a plurality of first sintering plate filter elements in a hanging mode, the plurality of first sintering plate filter elements are arranged in a arraying mode, and the filtering surfaces face the secondary waste gas inlet; a first horizontal partition plate air outlet is formed in one side, close to the second-stage air outlet, of the first horizontal partition plate, and a second sintered plate filter element is arranged at the first horizontal partition plate air outlet;
the upper part of the inner cavity of the three-stage dust removal box is a dust removal cloth bag filter cavity, and the lower part of the inner cavity is a second dust collection hopper communicated with the dust removal cloth bag filter cavity; the upper part of the dust removal cloth bag filter cavity is fixedly provided with a second horizontal partition plate, a plurality of through holes are formed in the second horizontal partition plate at intervals, and a filter bag taking a superfine fiber net as a filter layer material is arranged at the lower part of the through holes; one side of the bottom of the dust removal cloth bag filter cavity is provided with a three-stage waste gas inlet, and the other side of the top of the dust removal cloth bag filter cavity is provided with a three-stage air outlet; the secondary air outlet is connected with the tertiary exhaust gas inlet through a secondary exhaust pipe, and a draught fan IV and a one-way air inlet valve IV are arranged at the tertiary exhaust gas inlet.
On the basis of the technical scheme, the invention can be improved as follows.
Preferably, the bottom of the ultrasonic wet dust collection cavity is provided with a plurality of rows of exhaust pipes with holes, the exhaust pipes are connected with the primary waste gas inlet, an ultrasonic generator is arranged on the outer wall of the ultrasonic wet dust collection cavity, and an ultrasonic transducer electrically connected with the ultrasonic generator extends into the ultrasonic wet dust collection cavity in a sealing way; the upper part of the ultrasonic wet dust removal cavity is provided with a dust removal liquid injection port, and the lower part of the ultrasonic wet dust removal cavity is provided with a waste liquid discharge port; the ultrasonic wet dust removal cavity is communicated with the cyclone dust removal cavity above the ultrasonic wet dust removal cavity through airflow channels on two sides.
Preferably, two air inlets corresponding to the air flow channels are arranged at the upper part of the cyclone dust collection cavity, the upper part of the cyclone dust collection cavity is a conical cavity, an inner vortex and an outer vortex are arranged in the conical cavity, and the outer vortex is arranged at the outer side of the inner vortex; the first-stage air outlet is arranged at the center of the top of the conical cavity; the lower part of the conical cavity is connected with a third dust hopper.
Preferably, the lower ends of the first dust hopper, the second dust hopper and the third dust hopper are respectively provided with an ash outlet communicated with the outside correspondingly; and the inner side walls of the first dust hopper, the second dust hopper and the third dust hopper are respectively provided with an air hammer correspondingly.
Preferably, the periphery of the primary exhaust pipe is coated with a heating plate, and a plurality of air flow blocking plates which are fixed in an up-down staggered manner are arranged in the inner cavity of the primary exhaust pipe along the air flow direction.
Preferably, a first air storage tank is mounted on the outer side of the upper part of the secondary dust removal tank, a first blowing pipe for blowing air into the filter core is correspondingly mounted on the second sintered plate filter core and each first sintered plate filter core, the first blowing pipe is connected with a total air outlet pipe of the first air storage tank, a first pulse valve is correspondingly mounted on the first blowing pipe, and all the first pulse valves are electrically connected with a first pulse valve control system mounted on the first air storage tank; the upper portion outside of tertiary dust removal case is installed the second gas holder, every the top of through-hole all corresponds and sets up a second jetting pipe, the second jetting pipe is connected the total outlet duct of second gas holder, correspond on the second jetting pipe and install the second pulse valve, all the second pulse valve all with install in second pulse valve control system electricity on the second gas holder is connected.
Preferably, the first pulse valve control system comprises a first pulse valve driving unit and a first pulse valve blow timing unit; the second pulse valve control system comprises a second pulse valve driving unit and a second pulse valve blowing timing unit.
Preferably, the exhaust gas inlet pipe is provided with a gas dust content concentration monitor, and the first unidirectional air inlet valve and the second unidirectional air inlet valve are opened and closed according to the data of the gas dust content concentration monitor.
Preferably, the middle layer of the filter cloth used for manufacturing the filter bag is a polyimide nanofiber filter layer, and a carbon fiber woven fabric reinforcing layer is loaded on the outer side of the polyimide filter layer.
By adopting the technical scheme, the invention has the following beneficial effects:
1. the pharmaceutical waste gas filtering pretreatment equipment can purify pharmaceutical waste gas for multiple times through the first-stage dust removal box, the second-stage dust removal box and the third-stage dust removal box, and has high dust removal efficiency.
2. According to the invention, the first-stage dust removal box is arranged, the dust removal liquid injected into the ultrasonic wet dust removal cavity is subjected to cavitation by means of high penetrability of ultrasonic waves and ultrasonic cavitation effect, and dust particles in the gas are captured into the dust removal liquid to primarily purify pharmaceutical waste gas through the vigorous vibration of the dust removal liquid and full contact with the dust-containing waste gas; and then removing some non-fibrous dust with large dust particles in the waste gas through the cyclone dust removing cavity, so that the sintered plate filter core in the subsequent secondary dust removing box can sufficiently and intensively filter the superfine dust in the waste gas.
3. According to the invention, the heating plate is coated on the periphery of the primary exhaust pipe, and meanwhile, the inner cavity of the primary exhaust pipe is provided with the plurality of air flow baffle plates which are fixed in an up-down staggered manner along the air flow direction, so that the drying time of the waste gas passing through the primary exhaust pipe is fully prolonged, and the waste gas entering the secondary dust removal box is ensured to be waste gas with high dryness.
4. In the actual use process, the invention can judge whether the first-stage dust removal box is needed by detecting the dust content and the component data in the pharmaceutical waste gas in advance at the waste gas inlet pipe.
5. Because the sintering plate filter element in the secondary dust removing box mainly filters superfine dust in waste gas, the high filtering precision can be continuously maintained.
6. The invention is characterized in that the three-stage dust removing box is additionally arranged behind the two-stage dust removing box, the three-stage dust removing box is a cloth bag dust remover, and a filter bag which takes a superfine fiber net as a filter layer material is used in the three-stage dust removing box, so that finer dust in waste gas can be intensively filtered and treated, the collected dust is fine dust with the particle size of more than 0.3 micron, and the dust treatment efficiency can reach more than 99.5%.
7. According to the invention, 95% of dust in the waste gas can be effectively prevented from entering the subsequent recovery treatment equipment of pharmaceutical waste gas, the frequency of a centrifugal fan in the subsequent recovery treatment equipment is reduced, the cleaning period of the absorption tower and the analysis tower is prolonged, and the potential safety hazard in the cleaning process is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are only embodiments of the present invention, and other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of the overall structure of a pharmaceutical waste gas filtering pretreatment device according to the present invention.
Fig. 2 is a schematic diagram of the whole structure of a pharmaceutical waste gas filtering pretreatment device according to the present invention.
Fig. 3 is a first internal structure diagram of each dust removing box in the pharmaceutical waste gas filtering pretreatment device of the present invention.
Fig. 4 is a second internal structure diagram of each dust removing box in the pharmaceutical waste gas filtering pretreatment device of the present invention.
Fig. 5 is a side view of a pharmaceutical waste gas filtering pretreatment device according to the present invention.
Fig. 6 is a schematic view of the internal structure of the primary dust box.
Fig. 7 is a schematic view of the internal structure of the secondary dust box.
Fig. 8 is a schematic view of the internal structure of the three stage dust box.
In the figure: 1-first-stage dust removal box, 2-ultrasonic wet dust removal cavity, 3-cyclone dust removal cavity, 4-exhaust gas inlet pipe, 5-first-stage exhaust pipe, 6-induced draft fan I, 7-one-way air inlet valve I, 8-second-stage dust removal box, 9-sintered plate filter element filter cavity, 10-first dust collection hopper, 11-first horizontal partition plate, 12-upper air purification chamber, 13-lower dust removal chamber, 14-second-stage exhaust gas inlet, 15-induced draft fan II, 16-one-way air inlet valve II, 17-induced draft fan III, 18-one-way air inlet valve III, 19-second-stage air outlet, 20-first sintered plate filter element, 21-second sintered plate filter element, 22-third-stage dust removal box, 23-dust removal cloth bag filter cavity, 24-second dust hopper, 25-second horizontal partition board, 26-filter bag, 27-third waste gas inlet, 28-third air outlet, 29-second exhaust pipe, 30-induced draft fan four, 31-unidirectional air inlet valve four, 32-perforated exhaust pipe, 33-ultrasonic generator, 34-ultrasonic transducer, 35-dedusting liquid inlet, 36-waste liquid outlet, 37-third dust hopper, 38-heating plate, 39-air flow baffle board, 40-first air storage tank, 41-first blowing pipe, 42-first pulse valve, 43-second air storage tank, 44-second blowing pipe, 45-second pulse valve, 46-gas dust content concentration monitor.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Examples:
as shown in fig. 1 to 8, the pharmaceutical waste gas filtering pretreatment device of the present invention comprises a primary dust removing box 1, a secondary dust removing box 8 and a tertiary dust removing box 22.
In particular, the method comprises the steps of,
the lower part of the inner cavity of the first-stage dust removal box 1 is provided with an ultrasonic wet dust removal cavity 2, and the upper part is provided with a cyclone dust removal cavity 3; one side of the bottom of the ultrasonic wet dust collection cavity 2 is provided with a primary waste gas inlet connected with a waste gas inlet pipe 4, the top of the cyclone dust collection cavity 3 is provided with a primary air outlet, and the primary air outlet is externally connected with a primary exhaust pipe 5; and a first induced draft fan 6 and a first unidirectional air inlet valve 7 are arranged at the inlet of the primary waste gas.
In a further embodiment, the bottom of the ultrasonic wet dust collection cavity 2 is provided with a plurality of rows of exhaust pipes 32 with holes connected with the primary exhaust gas inlet, and specifically, a plurality of exhaust holes are uniformly arranged on the peripheral wall of the exhaust pipe 32 with holes. An ultrasonic generator 33 is arranged on the outer wall of the ultrasonic wet dust collection cavity 2, and meanwhile, an ultrasonic transducer 34 electrically connected with the ultrasonic generator 33 extends into the ultrasonic wet dust collection cavity 2 in a sealing way; the upper part of the ultrasonic wet dust-removing cavity 2 is provided with a dust-removing liquid injection port 35, and the lower part is provided with a waste liquid discharge port 36; the ultrasonic wet dust removing cavity 2 is communicated with the cyclone dust removing cavity 3 above the ultrasonic wet dust removing cavity through airflow channels on two sides.
The high penetrability of ultrasonic wave and ultrasonic cavitation effect can make the dust removal liquid that pours into ultrasonic wave wet dust removal chamber 2 take place the cavitation, through the fierce concussion of dust removal liquid with contain dirt waste gas abundant contact, can catch the dust granule in the gas in the dust removal liquid to reach preliminary purification pharmacy waste gas's purpose.
Meanwhile, the upper part of the cyclone dust collection cavity 3 is provided with two air inlets corresponding to the air flow channel, the upper part of the cyclone dust collection cavity 3 is a conical cavity, an inner vortex and an outer vortex are arranged in the conical cavity, and the outer vortex is arranged at the outer side of the inner vortex; a first-level air outlet is arranged at the center of the top of the conical cavity; a third dust hopper 37 is connected to the lower part of the conical cavity. The centrifugal force generated by the rotating air flow is used to separate dust particles from the dust-laden exhaust and collect them in the lower third dust hopper 37.
In a further embodiment, in order to ensure the dryness of the air flow entering the secondary dust removing box 8, the periphery of the primary exhaust pipe 5 is coated with a heating plate 38, and meanwhile, a plurality of air flow blocking plates 39 which are fixed in an up-down staggered manner are arranged in the inner cavity of the primary exhaust pipe 5 along the air flow direction so as to prevent the air flow from passing through the primary exhaust pipe 5 quickly.
The upper part of the inner cavity of the secondary dust removing box 8 is a sintered plate filter element filter cavity 9, and the lower part of the inner cavity is a first dust hopper 10; the sintering plate filter element filter cavity 9 is divided into an upper air purifying chamber 12 and a lower dust removing chamber 13 by a first horizontal partition plate 11 at intervals corresponding to the cavity, and the lower dust removing chamber 13 is communicated with a first dust collecting hopper 10; a second-stage exhaust gas inlet 14 is formed in one side of the bottom of the lower dust chamber 13, a branch port of the second-stage exhaust gas inlet 14 is connected with an exhaust gas inlet pipe 4, a second branch port is connected with a first-stage exhaust pipe 5, a second induced draft fan 15 and a second unidirectional air inlet valve 16 are arranged at the first branch port, and a third induced draft fan 17 and a third unidirectional air inlet valve 18 are arranged at the second branch port; a secondary air outlet 19 is arranged on one side of the upper clean air chamber 12 opposite to the secondary exhaust air inlet 14; the bottom of the first horizontal partition plate 11 is provided with a plurality of first sintering plate filter elements 20 in a hanging manner, the plurality of first sintering plate filter elements 20 are arranged in a arraying manner, and the filtering surfaces face to the secondary waste gas inlet 14; a first horizontal partition plate air outlet is formed in one side, close to the second-stage air outlet 19, of the first horizontal partition plate 11, and a second sintered plate filter element 21 is installed at the first horizontal partition plate air outlet.
In a further specific embodiment, the first air storage tank 40 is installed on the outer side of the upper portion of the secondary dust removal box 8, the second sintered plate filter core 21 and each first sintered plate filter core 20 are respectively and correspondingly provided with a first blowing pipe 41 blowing air into the respective filter core, the first blowing pipe 41 is connected with a total air outlet pipe of the first air storage tank 40, the first blowing pipe 41 is correspondingly provided with a first pulse valve 42, and all the first pulse valves 42 are electrically connected with a first pulse valve control system installed on the first air storage tank 40.
Meanwhile, the first pulse valve control system comprises a first pulse valve driving unit and a first pulse valve blowing timing unit.
The upper part of the inner cavity of the three-stage dust removal box 22 is provided with a dust removal cloth bag filter cavity 23, and the lower part of the inner cavity is provided with a second dust hopper 24 communicated with the dust removal cloth bag filter cavity 23; the upper part of the dust removing cloth bag filter cavity 23 is fixed with a second horizontal partition plate 25, a plurality of through holes are formed in the second horizontal partition plate 25 at intervals, a filter bag 26 which takes a superfine fiber net as a filter layer material is arranged at the lower part of the through holes, and the filter bag 26 can be further supported by a supporting framework; a third-stage waste gas inlet 27 is formed in one side of the bottom of the dust-removing cloth bag filter cavity 23, and a third-stage air outlet 28 is formed in the other side of the top opposite to the bottom; the second-stage air outlet 19 is connected with the third-stage exhaust inlet 27 through a second-stage exhaust pipe 29, and the third-stage exhaust inlet 27 is provided with a fourth induced draft fan 30 and a fourth unidirectional air inlet valve 31, and the fourth induced draft fan 30 and the fourth unidirectional air inlet valve 31 are in a normally open state in a normal working state.
Further specifically, the middle layer of the filter cloth used to make the filter bag 26 is a polyimide nanofiber filter layer, and a carbon fiber woven fabric reinforcing layer is supported on the outer side of the polyimide filter layer.
In a further embodiment, a second air storage tank 43 is installed on the outer side of the upper portion of the three-stage dust removal tank 22, a second blowing pipe 44 is correspondingly arranged above each through hole, the second blowing pipe 44 is connected with the total air outlet pipe of the second air storage tank 43, a second pulse valve 45 is correspondingly installed on the second blowing pipe 44, and all the second pulse valves 45 are electrically connected with a second pulse valve control system installed on the second air storage tank 43.
Meanwhile, the second pulse valve control system comprises a second pulse valve driving unit and a second pulse valve blowing timing unit.
In a further embodiment of the present invention, the lower ends of the first dust collecting hopper 10, the second dust collecting hopper 24 and the third dust collecting hopper 37 are respectively provided with an ash outlet communicated with the outside; and, the inner side walls of the first dust hopper 10, the second dust hopper 24 and the third dust hopper 37 are respectively provided with an air hammer correspondingly, so that dust falling into the dust hoppers can be smoothly discharged from the ash outlet.
The working principle of the first-stage dust removing box 1 in the invention is as follows:
the method comprises the steps of firstly injecting dust removing liquid into an ultrasonic wet dust removing cavity 2 through a dust removing liquid injection opening 35, then starting an ultrasonic generator 33 and an ultrasonic transducer 34 to enable the dust removing liquid in the cavity to generate cavitation, at the moment, starting a first induced draft fan 6 and opening a first unidirectional air inlet valve 7, enabling waste gas to enter the ultrasonic wet dust removing cavity 2 through a vent pipe 32 with holes, enabling dust-containing waste gas to fully contact with the dust removing liquid, primarily removing dust in the dust-containing waste gas, enabling the dust-containing waste gas to flow into a cyclone dust removing cavity 3 through airflow channels on two sides, performing rotary motion in the cyclone dust removing cavity 3 to form rotary downward external rotary flow, separating dust particles from airflow under centrifugal action and capturing the dust particles on corresponding cavity walls, and then falling into a third dust collecting hopper 37 under the action of gravity, so that the purpose of dust-gas separation is achieved, and enabling filtered primary clean airflow to flow out to a primary vent pipe 5 through a primary air outlet, and meanwhile enabling the clean airflow to be fully dried when flowing through the primary vent pipe 5, and avoiding carrying moisture or dust removing liquid.
The invention installs the gas dust content concentration monitor 46 on the waste gas inlet pipe 4, the one-way air inlet valve I7, the one-way air inlet valve II 16 and the one-way air inlet valve III 18 can be opened and closed according to the data of the gas dust content concentration monitor 46.
In the invention, if the gas dust content concentration monitor 46 detects that the value of the gas dust content in the waste gas is lower than a set value, the first one-way air inlet valve 7 and the third one-way air inlet valve 18 are closed, the second one-way air inlet valve 16 is opened, and the dust-containing waste gas directly enters the secondary dust removal box 8 for dust removal and filtration; if the dust-containing waste gas is higher than the set value, the first one-way air inlet valve 7 and the third one-way air inlet valve 18 are opened, the second one-way air inlet valve 16 is closed, and the dust-containing waste gas firstly passes through the first-stage dust removal box 1 to be subjected to first-stage pre-filtration treatment and then flows into the second-stage dust removal box 8.
The working principle of the secondary dust removing box 8 in the invention is as follows:
dust-containing waste gas enters the lower dedusting chamber 13 of the filter cavity 9 of the sintering plate filter element through the secondary waste gas inlet 14, dust with fine granularity and small density is deposited on the surface of the first sintering plate filter element 20 through the combined effects of Brownian diffusion, screening and the like, purified gas enters the upper clean gas chamber 12 through the gas outlet of the first horizontal partition plate, secondary filtration is carried out through the second sintering plate filter element 21, and finally the purified gas is discharged through the secondary gas outlet 19.
When each sintered plate filter element in the secondary dust removal box 8 filters dust, the first pulse valve driving unit in the first pulse valve control system controls the corresponding first pulse valve 42 to be opened, compressed air in the first air storage tank 40 is instantaneously sprayed from the first spraying pipe 41 to enable the sintered plate filter element to be flushed by reverse airflow, and dust attached to the outer surfaces of the first sintered plate filter element 20 and the second sintered plate filter element 21 is stripped and falls into the first dust hopper 10.
The first pulse valve driving unit in the first pulse valve control system is also capable of controlling the interval time between two adjacent times of the first pulse valves 42, and the first pulse valve blow timing unit in the first pulse valve control system is used for setting the activation time period of each first pulse valve 42.
The three-stage dust removing box 22 is a cloth bag dust remover, wherein the middle layer used for manufacturing the filter cloth on the filter bag 26 is a polyimide nanofiber filter layer, and a carbon fiber woven fabric reinforcing layer is loaded on the outer side of the polyimide filter layer. Thus, fine dust particles with the particle size larger than 0.3 micron in the dust-containing waste gas can be intercepted by the polyimide superfine fiber net, and the dust treatment efficiency can reach more than 99.5 percent.
The filter cloth on the filter bag 26 in the three-stage dust removing box 22 is firstly prepared into a polyimide superfine fiber net with the diameter of about 200nm by an electrostatic spinning method to serve as a filter layer, then a 2/2 twill carbon fiber woven cloth is prepared into a mechanical reinforcing layer by weaving, after spinning is finished, polyimide yarns are used for stitching with the carbon fiber cloth in the direction vertical to the cloth cover, and finally a multi-scale mixed filter material consisting of an upper reinforcing layer, a lower reinforcing layer and a middle superfine fiber net layer is formed. The polyimide is selected as a filter layer material, so that the polyimide has excellent high temperature resistance, excellent comprehensive properties such as mechanical property, corrosion resistance, solvent resistance, radiation resistance and the like, and is very effective in filtering micro-nano particles. And meanwhile, the carbon fiber woven fabric is selected as a mechanical reinforcing layer material, so that the nano filter layer is protected, and meanwhile, the necessary mechanical properties are provided for the whole filter material system.
When each filter bag 26 in the three-stage dust removing box 22 filters dust, the second pulse valve driving unit in the second pulse valve control system controls the corresponding second pulse valve 45 to be opened, and compressed air in the second air storage tank 43 is instantaneously sprayed out from the second blowing pipe 44, so that the dust attached to the outer surface of the filter bag is stripped off and falls into the second dust collecting hopper 24 under the action of reverse airflow flushing.
The second pulse valve driving unit in the second pulse valve control system can also control the interval time of two adjacent times of the second pulse valve 45, and the second pulse valve blow timing unit in the second pulse valve control system is used for setting the starting duration of each second pulse valve 45.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. Pharmaceutical waste gas filters pretreatment equipment, characterized by, include:
the lower part of the inner cavity of the primary dust removal box is an ultrasonic wet dust removal cavity, and the upper part of the inner cavity of the primary dust removal box is a cyclone dust removal cavity; a primary waste gas inlet connected with a waste gas inlet pipe is formed in one side of the bottom of the ultrasonic wet dust collection cavity, a primary air outlet is formed in the top of the cyclone dust collection cavity, and a primary exhaust pipe is externally connected with the primary air outlet; a draught fan I and a one-way air inlet valve I are arranged at the first-stage waste gas inlet; the ultrasonic wet dust removal cavity is communicated with the cyclone dust removal cavity above the ultrasonic wet dust removal cavity through airflow channels on two sides; the upper part of the cyclone dust collection cavity is provided with two air inlets corresponding to the air flow channel; the upper part of the cyclone dust collection cavity is a conical cavity, an inner vortex and an outer vortex are arranged in the conical cavity, and the outer vortex is arranged on the outer side of the inner vortex; the first-stage air outlet is arranged at the center of the top of the conical cavity; the lower part of the conical cavity is connected with a third dust hopper;
the upper part of the inner cavity of the secondary dust removal box is a filter cavity of the sintered plate filter element, and the lower part of the inner cavity is a first dust hopper; the sintering plate filter element filter cavity is divided into an upper air purifying chamber and a lower dust removing chamber by a first horizontal partition plate at intervals corresponding to the cavity, and the lower dust removing chamber is communicated with the first dust collecting hopper; a secondary waste gas inlet is formed in one side of the bottom of the lower dust removing chamber; the first branch port of the second-stage exhaust gas inlet is connected with the exhaust gas inlet pipe, the second branch port is connected with the first-stage exhaust pipe, the first branch port is provided with a second induced draft fan and a second unidirectional air inlet valve, and the second branch port is provided with a third induced draft fan and a third unidirectional air inlet valve; a secondary air outlet is arranged on one side of the upper air purifying chamber, which is opposite to the secondary exhaust gas inlet; the bottom of the first horizontal partition plate is provided with a plurality of first sintering plate filter elements in a hanging mode, the plurality of first sintering plate filter elements are arranged in a arraying mode, and the filtering surfaces face the secondary waste gas inlet; a first horizontal partition plate air outlet is formed in one side, close to the second-stage air outlet, of the first horizontal partition plate, and a second sintered plate filter element is arranged at the first horizontal partition plate air outlet;
the upper part of the inner cavity of the three-stage dust removal box is a dust removal cloth bag filter cavity, and the lower part of the inner cavity is a second dust collection hopper communicated with the dust removal cloth bag filter cavity; the upper part of the dust removal cloth bag filter cavity is fixedly provided with a second horizontal partition plate, a plurality of through holes are formed in the second horizontal partition plate at intervals, and a filter bag taking a superfine fiber net as a filter layer material is arranged at the lower part of the through holes; one side of the bottom of the dust removal cloth bag filter cavity is provided with a three-stage waste gas inlet, and the other side of the top of the dust removal cloth bag filter cavity is provided with a three-stage air outlet; the secondary air outlet is connected with the tertiary exhaust inlet through a secondary exhaust pipe, and a draught fan IV and a one-way air inlet valve IV are arranged at the tertiary exhaust inlet;
a first air storage tank is arranged on the outer side of the upper part of the secondary dust removal tank, a first blowing pipe for blowing air into the filter core is correspondingly arranged on the second sintered plate filter core and each first sintered plate filter core, the first blowing pipe is connected with a total air outlet pipe of the first air storage tank, a first pulse valve is correspondingly arranged on the first blowing pipe, and all the first pulse valves are electrically connected with a first pulse valve control system arranged on the first air storage tank; a second air storage tank is arranged on the outer side of the upper part of the three-stage dust removal tank, a second blowing pipe is correspondingly arranged above each through hole, the second blowing pipe is connected with a total air outlet pipe of the second air storage tank, a second pulse valve is correspondingly arranged on the second blowing pipe, and all the second pulse valves are electrically connected with a second pulse valve control system arranged on the second air storage tank;
and the exhaust gas inlet pipe is provided with a gas dust content concentration monitor, and the first unidirectional air inlet valve and the second unidirectional air inlet valve are opened and closed according to the data of the gas dust content concentration monitor.
2. The pharmaceutical waste gas filtering pretreatment equipment according to claim 1, wherein the bottom of the ultrasonic wet dust collection cavity is provided with a plurality of rows of exhaust pipes with holes connected with the primary waste gas inlet, an ultrasonic generator is arranged on the outer wall of the ultrasonic wet dust collection cavity, and an ultrasonic transducer electrically connected with the ultrasonic generator is sealed to extend into the ultrasonic wet dust collection cavity; the upper part of the ultrasonic wet dust removal cavity is provided with a dust removal liquid injection port, and the lower part of the ultrasonic wet dust removal cavity is provided with a waste liquid discharge port.
3. The pharmaceutical waste gas filtering pretreatment equipment according to claim 1, wherein the lower ends of the first dust hopper, the second dust hopper and the third dust hopper are respectively provided with an ash outlet communicated with the outside; and the inner side walls of the first dust hopper, the second dust hopper and the third dust hopper are respectively provided with an air hammer correspondingly.
4. The pharmaceutical waste gas filtering pretreatment equipment according to claim 1, wherein the periphery of the primary exhaust pipe is coated with a heating plate, and a plurality of air flow blocking plates which are fixed in an up-down staggered manner are arranged in the inner cavity of the primary exhaust pipe along the air flow direction.
5. The pharmaceutical waste gas filtering pretreatment device according to claim 1, wherein the first pulse valve control system comprises a first pulse valve driving unit and a first pulse valve blow timing unit; the second pulse valve control system comprises a second pulse valve driving unit and a second pulse valve blowing timing unit.
6. The pharmaceutical waste gas filtering pretreatment equipment according to claim 1, wherein the middle layer of the filter cloth used for manufacturing the filter bag is a polyimide nanofiber filter layer, and a carbon fiber woven fabric reinforcing layer is loaded on the outer side of the polyimide nanofiber filter layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311213449.1A CN117085442B (en) | 2023-09-20 | 2023-09-20 | Pharmacy waste gas filters pretreatment equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311213449.1A CN117085442B (en) | 2023-09-20 | 2023-09-20 | Pharmacy waste gas filters pretreatment equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117085442A CN117085442A (en) | 2023-11-21 |
| CN117085442B true CN117085442B (en) | 2024-03-08 |
Family
ID=88770065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311213449.1A Active CN117085442B (en) | 2023-09-20 | 2023-09-20 | Pharmacy waste gas filters pretreatment equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117085442B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000140539A (en) * | 1998-11-04 | 2000-05-23 | Toshio Awaji | Treatment apparatus and treatment method of dust- containing exhaust gas |
| CN101307705A (en) * | 2008-02-04 | 2008-11-19 | 北京英泰世纪环境科技有限公司 | Hierarchical type granule capturing device and its regeneration method |
| CN202876597U (en) * | 2012-09-27 | 2013-04-17 | 广东博德精工建材有限公司 | Multi-level dust removal system |
| KR20160023499A (en) * | 2014-08-22 | 2016-03-03 | 주식회사 제이텍 | Dust collector |
| CN205461579U (en) * | 2016-01-28 | 2016-08-17 | 国电康能科技股份有限公司 | Innoxious multilevel processing device of waste gas |
| CN208465514U (en) * | 2018-05-30 | 2019-02-05 | 中国航空制造技术研究院 | A kind of purification device of dusty gas |
| CN209885446U (en) * | 2019-03-22 | 2020-01-03 | 北京巴尔福过滤技术有限公司 | Sintered plate dust remover |
| KR102299775B1 (en) * | 2021-02-02 | 2021-09-08 | 이진석 | Multi-Dust Collector |
| CN215654474U (en) * | 2021-04-23 | 2022-01-28 | 中检集团公信安全科技有限公司 | Ultrasonic cyclone wet dust removal device for preventing and treating occupational diseases and hazards of mine dust |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101173383A (en) * | 2000-09-05 | 2008-05-07 | 唐纳森公司 | Polymer, polymer microfiber, polymer nanofiber and applications including filter structures |
| CN109316850A (en) * | 2018-10-26 | 2019-02-12 | 浙江鸿盛环保科技集团有限公司 | Modularization duster system and its control method |
-
2023
- 2023-09-20 CN CN202311213449.1A patent/CN117085442B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000140539A (en) * | 1998-11-04 | 2000-05-23 | Toshio Awaji | Treatment apparatus and treatment method of dust- containing exhaust gas |
| CN101307705A (en) * | 2008-02-04 | 2008-11-19 | 北京英泰世纪环境科技有限公司 | Hierarchical type granule capturing device and its regeneration method |
| CN202876597U (en) * | 2012-09-27 | 2013-04-17 | 广东博德精工建材有限公司 | Multi-level dust removal system |
| KR20160023499A (en) * | 2014-08-22 | 2016-03-03 | 주식회사 제이텍 | Dust collector |
| CN205461579U (en) * | 2016-01-28 | 2016-08-17 | 国电康能科技股份有限公司 | Innoxious multilevel processing device of waste gas |
| CN208465514U (en) * | 2018-05-30 | 2019-02-05 | 中国航空制造技术研究院 | A kind of purification device of dusty gas |
| CN209885446U (en) * | 2019-03-22 | 2020-01-03 | 北京巴尔福过滤技术有限公司 | Sintered plate dust remover |
| KR102299775B1 (en) * | 2021-02-02 | 2021-09-08 | 이진석 | Multi-Dust Collector |
| CN215654474U (en) * | 2021-04-23 | 2022-01-28 | 中检集团公信安全科技有限公司 | Ultrasonic cyclone wet dust removal device for preventing and treating occupational diseases and hazards of mine dust |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117085442A (en) | 2023-11-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207137572U (en) | A kind of cloth bag automatic cleaning apparatus of new sack cleaner | |
| CN210934134U (en) | Bag-type dust collector | |
| CN107138013A (en) | UV paint spraying waste gas treatment process | |
| CN212790345U (en) | Bag collector with automatic low pressure deashing function | |
| CN207680233U (en) | Modularization industry dust remover | |
| CN1470310A (en) | Granular bed filter dust-collector and method thereof | |
| CN201618476U (en) | Deduster | |
| CN117085442B (en) | Pharmacy waste gas filters pretreatment equipment | |
| CN112604441A (en) | Zinc dust explosion-proof dust removal system device | |
| CN205613595U (en) | Cyclone dust collector | |
| CN107456825A (en) | Dust arrester with atomizing de-dusting | |
| CN207605491U (en) | Feed Manufacturing center pulse dust-extraction unit | |
| CN114515473A (en) | Wear-resisting dust removal filter bag with prevent blockking up clearance structure | |
| CN207270966U (en) | Dust-extraction unit with atomizing de-dusting | |
| CN215462766U (en) | Pulse jetting device of bag-type dust collector | |
| CN213313817U (en) | Filter cylinder of dust remover | |
| CN212327733U (en) | Cloth bag dust removal system | |
| CN209885425U (en) | Bag type dust collector | |
| CN218358006U (en) | Fold type bag dust collector | |
| CN212818691U (en) | Bag type dust collector | |
| KR20200060115A (en) | Bag filter dust collector | |
| CN218764618U (en) | Cement kiln tail gas processing apparatus | |
| CN214764036U (en) | High-efficient dust removal sack is put | |
| CN211274094U (en) | High-efficient dust removal cyclone | |
| CN215311046U (en) | High-temperature gas dust removal structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |