CN112237805A

CN112237805A - Dust removal method

Info

Publication number: CN112237805A
Application number: CN202010908309.6A
Authority: CN
Inventors: 高麟; 蒋敏; 王韬; 莫代林
Original assignee: Intermet Technology Chengdu Co Ltd
Current assignee: Intermet Technology Chengdu Co Ltd
Priority date: 2020-04-08
Filing date: 2020-09-02
Publication date: 2021-01-19
Also published as: CN214106143U; CN112090179A; CN112237811A; CN112237807A; CN214106141U; CN214106140U; CN214106139U; CN214106138U; CN213555871U; CN112237808A; CN112237809A; CN112237806A; CN112237810A; CN214106142U

Abstract

The invention discloses a dust removal method, which comprises the steps of adopting a dust removal device, wherein the dust removal device comprises a filter structure, the filter structure comprises a filter element, the filter element comprises a filter tube, and a tube body of the filter tube is formed by shaping metal or a sheet-shaped material taking metal as a matrix in a rolled mode and sealing and processing a seam; the outer diameter of the pipe body is only 20-200 mm, and the distance between every two adjacent filter pipes is 5-100 mm; the filtering wind speed is 0.8-2 m/min, and the temperature of the gas to be filtered is less than or equal to 800 ℃. Because a filtering structure with a higher filtering area is adopted, the filtering resistance is smaller, and the filtering wind speed is lower; the tube body made of metal or sheet material with metal as matrix has filtering resistance obviously smaller than that of ceramic filter element and can bear filtering temperature higher than that of non-metal cloth bag. Therefore, compared with the prior art, the dust removal method not only solves the problems of no high temperature resistance and low precision of the non-metal cloth bag, but also solves the technical problem of large filtering resistance caused by small filtering area.

Description

Dust removal method

The application claims priority of first application in China with application number 2020102681879, application date 2020, 4/8, entitled "Filter tube, Cluster Filter element and use thereof".

Technical Field

The invention relates to the technical field of sheet materials and filtering, in particular to a dust removal method.

Background

The sheet-shaped material has high temperature resistance obviously superior to that of a nonmetal cloth bag and smaller filtering resistance than a ceramic filter element, so that the tubular filter element made of the sheet-shaped material in a rolling mode is widely applied.

Chinese patent application publication nos. CN104759630A, CN104759629A, CN104874798A, CN104959611A, CN104959612A and CN104874801A, which have been filed by the applicant of the present application, disclose a sintered metal porous membrane without support or with support (which means that raw material powder is attached to a support and sintered together to form a shape), and successfully sell a tubular filter element product and a filter which are further made of the sintered metal porous membrane. Generally, tubular filter elements generally have a large diameter and length in order to ensure a high filtration area. However, during longer manufacturing and distribution, larger diameter and length cartridges suffer from the following problems:

(1) the filter element is provided with a support body on the inside or outside, which significantly increases the weight and the cost;

(2) because the filter element has a large diameter, the sealing of the two ends of the filter element is particularly complex (such as an inner filtering type filter device disclosed in the Chinese patent with the application number of 2018103243431), and once the filter element is damaged, the filter element is difficult to repair, and is usually replaced directly, so that the maintenance cost is very high;

(3) the diameter of the filter element is large, and the filter device needs a large floor area;

(4) if the seams are reduced to improve the strength of the filter element, the porous film before being rolled needs to have a very large area, so that the manufacturing cost is obviously increased, and the waste of the small-area porous film after being cut is caused;

(5) because the filter element is very long and the added support body is obviously increased in weight, the carrying and the installation of the filter element need to be matched by a plurality of workers, which wastes time and labor;

(6) when the filter element is long, the uniformity of the back flushing effect along the axial distribution of the filter element is poor;

(7) due to the limiting factors such as the field and the like, the lifting of the filtering area of the filter element is limited.

However, in addition to increasing the diameter and length and providing a support, there is currently no effective and low-cost means for increasing the filtration area and strength of a filter element made of sheet-like material.

Disclosure of Invention

The invention aims to provide a filter tube, a preparation method of the filter tube and a filter element.

The technical scheme is as follows:

the filter tube is densely distributed in a filter in an array manner for carrying out gas-solid separation filtration and/or liquid-solid separation filtration on a substance to be filtered when in use, and the tube body of the filter tube is formed by rolling and shaping metal or sheet-shaped material taking metal as a matrix and sealing a seam; and the outer diameter of the pipe body formed by rolling is only 20-200 mm, preferably 20-90 mm, more preferably 20-60 mm, and even more preferably 25-50 mm.

The preparation method of the filter tube comprises the following steps: rolling a sheet-like material with a thickness of 0.2-2.5 mm into a pipe body with an outer diameter of 20-200 mm.

The filter element comprises the filter tube.

The small-diameter filter tube has the following advantages: (1) the applicant of the present application has found that, in the case of a filter tube made of metal or a sheet-like material with a metal as a base, the smaller the diameter of the filter tube, the higher the strength of the filter tube, and particularly, when the diameter of the filter tube is reduced to 200mm or less, the strength of the filter tube itself can be maintained in a tubular shape even without providing a support body, and self-support can be achieved, thereby significantly reducing the weight and cost; (2) because the diameter of the filter tube is reduced, the working surface is reduced when the two ends of the filter element are fixed, and the sealing is more convenient; (3) because the diameter of the filter tube is reduced, the area of the sheet-like material before rolling is smaller, which is beneficial to reducing seams and reducing cutting waste; (4) the filtering temperature of the non-metal cloth bag can be far higher; (5) has a filtration resistance much less than that of a ceramic filter element. Therefore, the filter tube and the filter element effectively solve the technical problems of high cost and low strength of the filter element in the prior art.

A second object of the invention is to provide a filter cartridge.

The first filter element has the technical scheme as follows:

the filter element is placed in a filter for gas-solid separation and filtration and/or liquid-solid separation and filtration of a substance to be filtered when in use, and comprises at least two filter tubes which are arranged at intervals, wherein the tube body of each filter tube is formed by rolling and shaping metal or sheet-shaped material taking metal as a matrix and sealing seams; and the outer diameter of the pipe body formed by rolling is only 20-200 mm, preferably 20-90 mm, more preferably 20-60 mm, and even more preferably 25-50 mm.

In the first filter element, a traditional large-diameter single-tube filter element is replaced by a cluster filter element formed by clustering a plurality of small-diameter filter tubes, so that the filtering area can be remarkably increased in a limited installation space; the filter tube has self-supporting property, high strength, low cost, capability of bearing high filtering temperature and small filtering resistance. Therefore, the first filter element effectively solves the technical problem of small filtering area of the filter element in the prior art.

The second filter element adopts the technical scheme as follows:

the filter element is placed in a filter for gas-solid separation and filtration and/or liquid-solid separation and filtration of a substance to be filtered when in use, and comprises at least two filter tubes which are arranged at intervals, wherein the tube body of each filter tube is formed by rolling and shaping metal or sheet-shaped material taking metal as a matrix and sealing seams; the outer diameter of the rolled pipe body is only 20-200 mm, preferably 20-90 mm, more preferably 20-60 mm, and even more preferably 25-50 mm; the length of the filter tube is 100-5000 mm, preferably 100-3000 mm, more preferably 100-2000 mm, and still more preferably 200-1500 mm.

In the second filter element, a traditional large-diameter single-tube filter element is replaced by a cluster filter element formed by clustering a plurality of small-diameter filter tubes, so that the filter area can be remarkably increased in a limited installation space; for a filter with a small volume, the length of the filter element can be shortened through the bundling of the filter tubes, so that the technical problem that the length of the filter element is not matched with the filter area is solved; by reducing the length of the filter element, the back flushing effect can be more uniformly distributed along the axial direction of the filter tube; the filter tube has self-supporting property, high strength, low cost, capability of bearing high filtering temperature and small filtering resistance. Therefore, the second filter element of the invention effectively solves the technical problems of small filter area and poor blowback effectiveness of the filter element in the prior art.

The third filter element adopts the technical scheme as follows:

the filter element is placed in a filter for gas-solid separation and filtration and/or liquid-solid separation and filtration of objects to be filtered when in use, the filter element is provided with a plurality of filter units, the plurality of filter units are arranged in a concentric ring shape and/or a parallel straight line shape on the cross section of the filter element, and each filter unit comprises one or a plurality of filter pipes which are arranged at intervals; wherein, the body of the filter tube is formed by rolling and shaping metal or sheet-shaped material taking metal as a matrix and sealing and processing a seam; and the outer diameter of the pipe body formed by rolling is only 20-200 mm, preferably 20-90 mm, more preferably 20-60 mm, and even more preferably 25-50 mm.

In the third filter element, the traditional large-diameter single-tube filter element is replaced by a cluster filter element formed by clustering a plurality of small-diameter filter tubes, so that the filter area can be remarkably increased in a limited installation space; the filtering area of the filter element can be further increased by reasonably arranging the arrangement mode of the filter tubes; the filter tube has self-supporting property, high strength, low cost, capability of bearing high filtering temperature and small filtering resistance. Therefore, the third filter element of the invention effectively solves the technical problem of small filtering area of the filter element in the prior art.

The fourth filter element has the technical scheme as follows:

the filter core is placed in a filter during use and is used for treating that the thing that filters carries out gas-solid separation filtration and/or liquid-solid separation filtration, and the filter core includes filter tube and fixed subassembly, fixed subassembly includes: the head fixing structure comprises an upper joint, the upper joint is provided with a mounting hole matched with one end of the filter tube, and the inner wall of the mounting hole is hermetically connected with the outer wall of the filter tube; the tail fixing structure comprises a plug matched with the other end of the filter tube, and the plug is hermetically connected with the inner wall and/or the outer wall of the filter tube; wherein, the mounting holes, the filter tubes and the plugs are at least two groups; the pipe body of the filter pipe is formed by rolling and shaping metal or sheet-shaped material taking metal as a matrix and sealing and processing a seam; the outer diameter of the rolled pipe body is only 20-200 mm, preferably 20-90 mm, more preferably 20-60 mm, and even more preferably 25-50 mm; and clean gas formed after the gas to be filtered on one side of the upper joint passes through the pipe wall of the filter pipe is discharged from the other side of the upper joint.

In the fourth filter element, the traditional large-diameter single-tube filter element is replaced by the cluster filter element formed by clustering a plurality of small-diameter filter tubes, so that the filtering area can be remarkably increased in a limited installation space; a plurality of filter tubes are simultaneously fixed on the upper joint and then are arranged in the filter, so that the installation speed can be obviously increased; the diameter of the filter tube is obviously reduced, so that the sealing is simpler; the filter tube has self-supporting property, high strength, low cost, capability of bearing high filtering temperature and small filtering resistance. Therefore, the fourth filter element effectively solves the technical problems of small filtering area and complex installation structure of the filter element in the prior art.

The technical scheme of the fifth filter element is as follows:

the filter element is placed in a filter for gas-solid separation and filtration and/or liquid-solid separation and filtration of a substance to be filtered when in use, and comprises at least two filter tubes which are arranged at intervals, wherein the tube body of each filter tube is formed by rolling and shaping metal or sheet-shaped material taking metal as a matrix and sealing seams; the outer diameter of the rolled pipe body is only 20-200 mm, preferably 20-90 mm, more preferably 20-60 mm, and even more preferably 25-50 mm; the distance between two adjacent filter tubes is 5-100 mm, preferably 5-60 mm, more preferably 5-40 mm, and still more preferably 8-30 mm; the filter element also comprises a venturi tube, and the air outlet directions of the at least two filter tubes which are arranged at intervals are both positioned at the inner side of the venturi tube.

In the fifth filter element, a traditional large-diameter single-tube filter element is replaced by a cluster filter element formed by clustering a plurality of small-diameter filter tubes, so that the filter area can be remarkably increased in a limited installation space; the back flushing efficiency can be obviously improved by back flushing a plurality of filter pipes in each filter element simultaneously; the filter tube has self-supporting property, high strength, low cost, capability of bearing high filtering temperature and small filtering resistance. Therefore, the fifth filter element not only solves the technical problem of small filtering area of the filter element in the prior art, but also solves the back flushing problem after the filter tubes are bundled.

The technical scheme of the sixth filter element is as follows:

the filter element is placed in a filter for gas-solid separation and filtration and/or liquid-solid separation and filtration of a substance to be filtered when in use, and comprises at least two filter tubes which are arranged at intervals, wherein the tube body of each filter tube is formed by rolling and shaping metal or sheet-shaped material taking metal as a matrix and sealing seams; the outer diameter of the rolled pipe body is only 20-200 mm, preferably 20-90 mm, more preferably 20-60 mm, and even more preferably 25-50 mm; the distance between two adjacent filter tubes is 5-100 mm, preferably 5-60 mm, more preferably 5-40 mm, and still more preferably 8-30 mm; the filter core still includes the deashing structure, the deashing structure includes: an internal ash removal mechanism for removing ash from the interior of the filter tube; and an external ash removal mechanism for removing ash from the outside of the filter tube.

In the sixth filter element, a traditional large-diameter single-tube filter element is replaced by a cluster filter element formed by clustering a plurality of small-diameter filter tubes, so that the filter area can be remarkably increased in a limited installation space; the possibility of dust bridging is increased due to the reduction of the distance between the filter tubes, so that the back flushing effect can be obviously improved and the gas flux can be quickly recovered by arranging the internal dust cleaning mechanism and the external dust cleaning mechanism; the filter tube has self-supporting property, high strength, low cost, capability of bearing high filtering temperature and small filtering resistance. Therefore, the sixth filter element not only solves the technical problem of small filtering area of the filter element in the prior art, but also solves the problem of back flushing effectiveness after filter tubes are bundled.

A third object of the present invention is to provide a filter.

The first filter has the technical scheme as follows:

the filter is used for carrying out gas-solid separation filtration and/or liquid-solid separation filtration on objects to be filtered, and comprises a filtration structure, wherein the filtration structure comprises a filter element, the filter element comprises at least two filter tubes which are arranged at intervals, and tube bodies of the filter tubes are formed by shaping metal or sheet-shaped materials taking metal as a matrix in a rolling mode and sealing seams; the outer diameter of the rolled pipe body is only 20-200 mm, preferably 20-90 mm, more preferably 20-60 mm, and even more preferably 25-50 mm; the length of the filter tube is 100-5000 mm, preferably 100-3000 mm, more preferably 100-2000 mm, and still more preferably 200-1500 mm.

In the first filter, the height of the filter structure required for reaching the same filter area is remarkably reduced due to the bundling of the filter tubes, thereby being beneficial to reducing the volume of the filter; the filter tube has self-supporting property, high strength, low cost, capability of bearing high filtering temperature and small filtering resistance. It can be seen that the first filter of the invention achieves a higher filtration area and a smaller filter volume than the prior art.

The second filter has the technical scheme as follows:

the filter is used for carrying out gas-solid separation filtration and/or liquid-solid separation filtration on a substance to be filtered, and comprises a filtration structure, wherein the filtration structure comprises at least two filter elements which are arranged at intervals; the filter element comprises at least two filter tubes which are arranged at intervals, wherein the tube body of each filter tube is formed by rolling and shaping metal or sheet-shaped material taking metal as a matrix and sealing and processing seams; and the outer diameter of the pipe body formed by rolling is only 20-200 mm, preferably 20-90 mm, more preferably 20-60 mm, and even more preferably 25-50 mm.

In the second filter, a cluster filter element formed by clustering a plurality of small-diameter filter tubes is adopted, so that the filtering area can be obviously increased; for a filter with larger volume, the weight of a single filter element can be reduced and the installation is simplified by adopting a plurality of cluster filter elements when the high filtering area is ensured; for a filtering structure with a large number of required filtering pipes, a plurality of cluster-type filter elements are respectively installed, so that a uniform back flushing effect can be ensured; the filter tube has self-supporting property, high strength, low cost, capability of bearing high filtering temperature and small filtering resistance. Therefore, compared with the prior art, the second filter can achieve a higher filtering area, and solves the installation problem and the back flushing problem after the filter tubes are bundled.

The third filter has the technical scheme as follows:

the filter for treat that the filter carries out gas-solid separation filtration and/or liquid-solid separation filtration, the filter includes filtration, and filtration includes filter core and first bearing structure, and the filter core includes chimney filter and fixed subassembly, fixed subassembly includes: the head fixing structure comprises an upper joint, and the upper joint is provided with a mounting hole matched with one end of the filter tube; the tail fixing structure comprises a plug matched with the other end of the filter tube; wherein, the mounting holes, the filter tubes and the plugs are at least two groups; the pipe body of the filter pipe is formed by rolling and shaping metal or sheet-shaped material taking metal as a matrix and sealing and processing a seam; the outer diameter of the rolled pipe body is only 20-200 mm, preferably 20-90 mm, more preferably 20-60 mm, and even more preferably 25-50 mm; the filter structure comprises at least two filter elements which are arranged at intervals; the first support structure is provided with a first installation channel matched with the shape of the filter element, and the upper joint is hermetically connected with the first installation channel through a pressing mechanism; and clean gas formed after the gas to be filtered on one side of the first supporting structure and the upper joint passes through the pipe wall of the filter pipe is discharged on the other side.

In the third filter, the traditional large-diameter single-tube filter element is replaced by a cluster filter element formed by clustering a plurality of filter tubes, so that the filtering area can be remarkably increased in a limited installation space; secondly, a plurality of filter tubes are fixed on the upper joint at the same time and then are installed in the filter, so that the installation speed can be obviously increased; the filter tube has self-supporting property, high strength, low cost, capability of bearing high filtering temperature and small filtering resistance. Therefore, compared with the prior art, the third filter not only solves the technical problem of small filtering area of the filter, but also solves the installation problem of the filter tubes after bundling.

The technical scheme of the fourth filter is as follows:

the filter is used for carrying out gas-solid separation filtration and/or liquid-solid separation filtration on a substance to be filtered, and comprises a filtration structure, wherein the filtration structure comprises at least two filter elements which are arranged at intervals; the filter element comprises at least two filter tubes which are arranged at intervals, wherein the tube body of each filter tube is formed by rolling and shaping metal or sheet-shaped material taking metal as a matrix and sealing and processing seams; the outer diameter of the rolled pipe body is only 20-200 mm, preferably 20-90 mm, more preferably 20-60 mm, and even more preferably 25-50 mm; the filter also comprises an ash removal structure, and the ash removal structure comprises an internal ash removal mechanism for removing ash from the interior of the filter tube and an external ash removal mechanism for removing ash from the exterior of the filter tube; wherein the external ash removal mechanism comprises a first mechanism and/or a second mechanism; first mechanism includes that the gas outlet is located the first outside sweeping gas-supply pipe between filter tube and the filter tube in every filter core, second mechanism includes that the gas outlet is located the second outside sweeping gas-supply pipe between filter core and the filter core.

In the fourth filter, due to the bundling of the filter tubes, the height of the filter structure required for reaching the same filter area is remarkably reduced, thereby being beneficial to reducing the volume of the filter; by arranging the internal dust cleaning mechanism and the external dust cleaning mechanism, the back blowing effect can be improved, and the gas flux can be quickly recovered; the first mechanism and/or the second mechanism can comprehensively blow the outside of the filter tube, so that the phenomenon of dust bridging between the filter tube and the filter tube is effectively prevented; the filter tube has self-supporting property, high strength, low cost, capability of bearing high filtering temperature and small filtering resistance. Therefore, compared with the prior art, the fourth filter not only solves the technical problem of small filtering area of the filter, but also solves the problem of back flushing effectiveness after filter tubes are bundled.

The technical scheme of the fifth filter is as follows:

the filter is used for carrying out gas-solid separation filtration and/or liquid-solid separation filtration on a substance to be filtered, and comprises a filtration structure, wherein the filtration structure comprises at least two filter elements which are arranged at intervals; the filter element comprises at least two filter tubes which are arranged at intervals, wherein the tube body of each filter tube is formed by rolling and shaping metal or sheet-shaped material taking metal as a matrix and sealing and processing seams; the outer diameter of the rolled pipe body is only 20-200 mm, preferably 20-90 mm, more preferably 20-60 mm, and even more preferably 25-50 mm; the filter also comprises a pressure detection structure, wherein the pressure detection structure comprises a first pressure detector for detecting the gas pressure before filtration and/or a second pressure detector for detecting the gas pressure after filtration, and the second pressure detector is arranged at the gas outlet of each filter element.

In the fifth filter, the height of the filter structure required for reaching the same filter area is remarkably reduced due to the bundling of the filter tubes, thereby contributing to the reduction of the filter volume; the detection of the pressure of the air outlet of each filter element is beneficial to the targeted dust removal of the blocked filter elements and the maintenance of the air-leaking filter elements; the filter tube has self-supporting property, high strength, low cost, capability of bearing high filtering temperature and small filtering resistance. Therefore, compared with the prior art, the fifth filter not only solves the technical problem of small filtering area of the filter, but also solves the problems of dust removal and maintenance after the filter tubes are bundled.

The technical scheme of the sixth filter is as follows:

the filter is used for carrying out gas-solid separation filtration and/or liquid-solid separation filtration on an object to be filtered, and comprises a raw gas cavity, a purified gas cavity and a filtration structure positioned between the raw gas cavity and the purified gas cavity, wherein the filtration structure comprises a filter element, the filter element comprises at least two filter tubes which are arranged at intervals, and the tube bodies of the filter tubes are formed by shaping metal or sheet-shaped materials taking metal as a matrix in a rolling mode and sealing and processing seams; the outer diameter of the rolled pipe body is only 20-200 mm, preferably 20-90 mm, more preferably 20-60 mm, and even more preferably 25-50 mm; the length of the filter tube is 100-5000 mm, preferably 100-3000 mm, more preferably 100-2000 mm, and still more preferably 200-1500 mm; the filter also comprises a purification structure for chemically catalyzing and/or physically adsorbing volatile gas, and the purification structure is arranged between the gas outlet of the gas purification cavity and the filtering structure.

In the sixth filter, due to the bundling of the filter tubes, the height of the filter structure required to reach the same filter area is significantly reduced, thereby contributing to the reduction of the filter volume; furthermore, because the length of the filter structure of the filter is shortened, the size of the air purifying cavity can be increased for installing the purifying structure, so that the total occupied area for dust removal and purification is obviously reduced; the filter tube has self-supporting property, high strength, low cost, capability of bearing high filtering temperature and small filtering resistance. Therefore, compared with the prior art, the sixth filter can achieve a higher filtering area, can integrate filtering and purifying, and obviously saves cost.

The seventh filter technical scheme:

the filter is used for carrying out gas-solid separation filtration and/or liquid-solid separation filtration on objects to be filtered, and comprises a filtration structure, the filtration structure comprises a filter element and a maintenance structure; the maintenance structure includes: the plugging mechanism is used for plugging the air outlet of the filter element when the filter element fails; the connecting rod mechanism is used for controlling the plugging mechanism to plug the air outlet of the filter element when the filter element fails; the driving mechanism is used for driving the connecting rod mechanism when the filter element fails; when the filter element is not in fault, the plugging mechanism is positioned above the air outlet of the filter element; when the filter element breaks down, the plugging mechanism descends to the air outlet of the filter element.

In the prior art, once the filter element leaks, the filter element is usually only parked and maintained, and great economic hidden danger is caused. In the seventh filter, when the filter element fails, the failed filter element can be plugged in time, and other filter elements which do not fail can be normally used for the filter with a plurality of filter elements; the plugging process can be operated outside the filter without affecting the operation of the filter. Therefore, compared with the prior art, the seventh filter solves the technical problem that the filter element cannot be effectively treated in time when in failure.

The fourth purpose of the invention is to provide an electric reforming film dust remover and an electric reforming film dust removing system.

The technical scheme of the electric modified dust collector is as follows:

the electric modified film dust collector formed by modifying the electric dust collector comprises a filtering structure, wherein the filtering structure is arranged in a plate electrode placing area of the electric dust collector; the filter structure comprises a filter element and a first support structure; the first support structure is connected with a shell of the electric dust collector and divides the electrode plate placing area into an original air cavity and a purified air cavity which are respectively positioned at two sides of the first support structure, the original air cavity is connected with an air inlet channel of the electric dust collector, the purified air cavity is connected with an air outlet channel of the electric dust collector, the purified air formed by the air to be filtered in the original air cavity after the air to be filtered from the air inlet channel passes through the filter element enters the purified air cavity and then is discharged from the air outlet channel, and the dust intercepted by the filter element is discharged from an ash discharge port of the electric dust collector; the filter element comprises at least two filter tubes which are arranged at intervals, wherein the tube body of each filter tube is formed by rolling and shaping metal or sheet-shaped material taking metal as a matrix and sealing and processing seams; the outer diameter of the rolled pipe body is only 20-200 mm, preferably 20-90 mm, more preferably 20-60 mm, and even more preferably 25-50 mm; the length of the filter tube is 100-5000 mm, preferably 100-3000 mm, more preferably 100-2000 mm, and still more preferably 200-1500 mm.

The technical scheme of the electric membrane-changing dust removal system is as follows:

in the electric membrane-changing dust removal system formed by transforming an electric dust removal system, the electric dust removal system before transformation is provided with at least two electric dust collectors, and the electric membrane-changing dust removal system after transformation is provided with at least one electric membrane-changing dust collector.

The electric dust collector has low dust removal precision, the dust content of gas after general dust removal is still 100-300 mg/Nm3, the dust removal efficiency is unstable, the fluctuation is large along with the change of raw materials and furnace conditions of the previous working procedure, the power consumption is high, corona is easy to generate, the efficiency is reduced, potential safety hazards exist, and the maintenance cost is high. But because the equipment investment cost of the electric dust remover is high, for enterprises using the electric dust remover, the reasonable modification of the electric dust remover to save the cost and improve the dust removing effect is the most preferable mode. But the modification of the electric dust collector mainly faces the following problems: (1) the traditional non-metal cloth bag can not meet the requirements of high temperature resistance and high filtration precision; (2) because the electrode plate of the electric dust collector is limited in space of a placing area, the traditional single-tube filter element made of sheet materials is difficult to meet the requirement of the filtering area.

In the electric membrane-changing dust collector and the electric membrane-changing dust removing system, the clustering of the filter tubes ensures that a higher filtering area can be ensured even if the length of the filtering structure is very short, and the tube body formed by the sheet-shaped materials can bear the filtering temperature far higher than that of a non-metal cloth bag, so that the electric membrane-changing dust collector and the electric membrane-changing dust removing system are very suitable for being installed in an electrode plate placing area of an electric dust collector. Compared with an electric dust collector, the electric film-changing dust collector has stronger high-temperature resistance and dust removal precision, so that the electric film-changing dust collector or an electric film-changing dust removal system only comprising the electric film-changing dust collector has higher service temperature. Therefore, compared with the prior art, the electric film-changing dust collector and the electric film-changing dust removing system effectively solve the technical problem that the electric dust collector and the electric dust removing system are difficult to transform.

A fifth object of the present invention is to provide a dust removing method.

The technical scheme is as follows:

the dust removal method comprises the steps of adopting a dust removal device, wherein the dust removal device comprises a filter structure, the filter structure comprises a filter element, the filter element comprises at least two filter tubes which are arranged at intervals, and a tube body of each filter tube is formed by shaping metal or a sheet-shaped material taking metal as a matrix in a rolled mode and sealing and processing a seam; the outer diameter of the rolled pipe body is only 20-200 mm, preferably 20-90 mm, more preferably 20-60 mm, and even more preferably 25-50 mm; the distance between two adjacent filter tubes is 5-100 mm, preferably 5-60 mm, more preferably 5-40 mm, and still more preferably 8-30 mm; the filtering wind speed is 0.8-2 m/min, and the temperature of the gas to be filtered is less than or equal to 800 ℃.

In the dust removal method, the filtering structure with a higher filtering area is adopted, so that the filtering resistance is smaller, and the filtering air speed is lower; meanwhile, the pipe body made of metal or a sheet material taking metal as a matrix has filtering resistance obviously smaller than that of the ceramic filter element and can bear filtering temperature far higher than that of a non-metal cloth bag; the filter tube has self-supporting property, high strength and low cost, and can achieve high filtering precision. Therefore, compared with the prior art, the dust removal method not only solves the problems of no high temperature resistance and low precision of the non-metal cloth bag, but also solves the technical problem of large filtering resistance caused by small filtering area.

The invention is further described with reference to the following figures and detailed description. Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to assist in understanding the invention, and are included to explain the invention and their equivalents and not limit it unduly. In the drawings:

FIG. 1 is a schematic diagram of a filter tube according to an embodiment.

Fig. 2 is a schematic structural view of a second embodiment of a filter tube.

Fig. 3 is a schematic structural view of a third embodiment of a filter tube.

Fig. 4 shows a rolled tube body in an embodiment.

Fig. 5 shows a rolled pipe body in another embodiment.

Fig. 6 is a schematic view of an embodiment of a first filter cartridge.

Fig. 7 is a schematic structural diagram of an embodiment of a plurality of filter units in the third filter element, which are arranged in a concentric ring and a parallel straight line simultaneously.

Fig. 8 is a schematic structural view of another embodiment of a plurality of filter units in a third filter element in parallel and straight arrangement.

FIG. 9 is a schematic view of a fourth filter cartridge according to a first embodiment for improving sealing effect during expansion

Fig. 10 is a schematic diagram of a second embodiment of the fourth filter cartridge in order to improve the sealing effect when expansion joint is adopted.

Fig. 11 is a schematic view of a second embodiment of a fourth cartridge.

Fig. 12 is a schematic view of an embodiment of a fifth cartridge.

Fig. 13 is a schematic view of an embodiment of a sixth cartridge.

FIG. 14 is a schematic diagram of a first embodiment of a filter.

FIG. 15 is a schematic diagram of a second filter configuration in accordance with one embodiment.

Fig. 16 is a schematic structural view of a first embodiment of the first support structure.

FIG. 17 is a schematic diagram of a second embodiment of the first support structure.

FIG. 18 is a schematic view of a first embodiment of a second support structure.

FIG. 19 is a schematic diagram of a second embodiment of a second support structure.

Fig. 20 is a schematic structural view of the first embodiment of the pressing mechanism in the case of push-in mounting from top to bottom.

Fig. 21 is a schematic structural view of a first embodiment of the pressing mechanism in a push-in type installation from bottom to top.

Fig. 22 is a schematic structural view of a second embodiment of the hold-down mechanism.

Fig. 23 is a schematic structural view of a third embodiment of the pressing mechanism.

FIG. 24 is a schematic construction of a first embodiment of a fourth filter.

FIG. 25 is a schematic diagram of a second embodiment of a fourth filter.

FIG. 26 is a schematic view of a third embodiment of a fourth filter.

FIG. 27 is a schematic structural view of a fourth embodiment of a fourth filter.

FIG. 28 is a schematic view of the structure of the first embodiment of the fifth filter.

FIG. 29 is a schematic view of the construction of the first embodiment of the sixth filter.

Fig. 30 is a schematic structural view of a first embodiment of a purification structure in a sixth filter.

FIG. 31 is a schematic diagram of a second embodiment of a sixth filter.

Fig. 32 is a view of the service configuration during normal operation of the cartridge.

Fig. 33 is a state diagram of the service arrangement in the event of a filter cartridge failure.

Fig. 34 is a view showing the use of the linkage mechanism in normal operation of the cartridge.

Fig. 35 is a view showing a state of use of the link mechanism in the case of a failure of the filter element.

Fig. 36 is a cross-sectional view of the drive mechanism and first rod.

Fig. 37 is a schematic structural diagram of an embodiment of an electric modified film dust collector modified from an electric dust collector.

Fig. 38 is a schematic structural diagram of a first embodiment of an electric-to-membrane dust removal system modified from an electric dust removal system.

Fig. 39 is a schematic structural diagram of a second embodiment of an electric-to-membrane dust removal system modified from an electric dust removal system.

The relevant references in the above figures are:

100-filter tube, 110-tube body, 111-sheet material, 112-seam, 120-connector, 131-support ring, 132-keel, 200-filter element, 210-upper connector, 211-expansion head, 212-sealing structure, 213-first dust cleaning hole, 220-plug, 230-tailstock, 240-pull rod, 300-venturi tube, 311-first cone section, 321-first vertical tube section, 312-second cone section, 322-second vertical tube section, 330-step, 340-through hole, 411-air inlet tube, 411-air outlet tube, 413-raw air cavity, 414-clean air cavity, 415-dust-free cavity, 416-ash bucket, 417-shell, 420-first support structure, 421-first installation channel, 422-first pore plate, 423-a first support beam, 430-a second support structure, 431-a second installation channel, 432-a second perforated plate, 433-a second support beam, 441-a hold-down plate, 442-a backing plate, 443-a sealing layer, 444-a nut, 445-a bolt, 446-a screw, 451-an inner purge gas pipe, 452-a first total valve, 453-a branch pipe, 461-a first outer purge gas pipe, 462-a second total valve, 471-a second outer purge gas pipe, 472-a third total valve, 481-a first pressure detector, 482-a second pressure detector, 483-a temperature detector, 500-a purification structure, 510-a support strip, 520-a support plate, 530-an inlet plate, 540-an outlet plate, 550-a vent hole, 560-a partition plate, 611-plug groove, 612-plug cover, 613-plug ball, 620-parallelogram component, 621-first rod body, 622-second rod body, 623-third rod body, 624-connecting rod, 631-first rotating part, 632-first hinge part, 633-sliding groove, 634-free end, 635-second hinge part, 636-second rotating part, 637-convex ring, 638-groove body, 640-driving mechanism, 641-cylinder, 642-piston, 643-air inlet, 644-spring, 651-control air pipe, 652-control valve, 700-electric modified film dust remover, 710-air inlet channel, 720-air outlet channel, 730-dust outlet, 740-electrode plate placing area, 750-first baffle plate, 760-second baffle, 770-exhaust channel, 800-electric precipitator.

Detailed Description

The invention will be described more fully hereinafter with reference to the accompanying drawings. Those skilled in the art will be able to implement the invention based on these teachings. Before the present invention is described in detail with reference to the accompanying drawings, it is to be noted that:

the technical solutions and features provided in the present invention in the respective sections including the following description may be combined with each other without conflict.

Moreover, the embodiments of the present invention described in the following description are generally only some embodiments of the present invention, and not all embodiments. Therefore, all other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative effort shall fall within the protection scope of the present invention.

With respect to terms and units in the present invention. The terms "comprising," "having," and any variations thereof in the description and claims of this invention and the related sections are intended to cover non-exclusive inclusions.

Wherein the term "filtered wind speed" means: in filtration, the distance per unit time that the substance to be filtered (gas or liquid) passes through the filter (metal membrane) is generally expressed in meters per second (m/s).

Filter tube

Aiming at the technical problems of high cost, poor strength and the like of the traditional filter element made of sheet materials introduced in the background art, the invention provides a novel filter tube.

FIG. 1 is a schematic diagram of a filter tube according to an embodiment. As shown in fig. 1, the body (110) of the filter tube (100) is formed by rolling a sheet-like material (111) made of metal or metal as a base and sealing a seam (112). Wherein the outer diameter of the rolled pipe body (110) is only 20-200 mm, preferably 20-90 mm, more preferably 20-60 mm, and even more preferably 25-50 mm; the thickness of the tube wall of the tube body (110) is 0.2-2.5 mm, preferably 0.2-1.5 mm, and more preferably 0.25-0.8 mm; the pore diameter of the sheet-like material (111) is 0.3 to 200 μm, preferably 1 to 100 μm, more preferably 1.5 to 50 μm, and still more preferably 2 to 30 μm; the length of the filter tube (100) is 100-5000 mm, preferably 100-3000 mm, more preferably 100-2000 mm, and even more preferably 200-1500 mm; the sheet-like material (111) is a metal fiber felt, a sintered metal porous film or a metal mesh.

The tubular body 110 made of the sheet-like material 111 has a self-supporting property when the outer diameter of the filter tube 100 is 20 to 200 mm. Among them, when the outer diameter of the filter tube 100 is 20 to 90mm, preferably 20 to 60mm, and more preferably 25 to 50mm, the self-supporting property is the best. In particular implementations, the outside diameter of the filter tube 100 can be 20mm, 25mm, 30mm, 40mm, 50mm, 60mm, 90mm, 120mm, 150mm, 180mm, 200mm, or other values.

When the wall thickness of the tube body 110 is 0.2-2.5 mm, the filter membrane can have both low filtration resistance and high strength. Wherein, when the thickness of the tube wall of the tube body 110 is 0.2-1.5 mm, preferably 0.25-0.8 mm, the filtration resistance and strength matching degree are the best. In specific implementation, the thickness of the tube wall of the tube body 110 may be 0.2mm, 0.25mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 1mm, 1.2mm, 1.5mm, 1.8mm, 2.1mm, 2.3mm, 2.5mm or other values.

The sheet-like material 111 may be a sintered metal porous film unique to the applicant in the background art, or another sintered metal porous film, or a metal fiber mat, or a metal mesh. When the sintered metal porous film is adopted, the rolling process can be carried out before sintering or after sintering.

When the thickness of the sheet-like material 111 is 0.2-2.5 mm, the sheet-like material 111 has high strength and good flexibility, and can be bent and folded, so that when the tube body 110 is only composed of one layer of the sheet-like material 111, the obtained filter tube 100 can ensure the best filtering stability, and at the moment, the thickness of the sheet-like material 111 is the tube wall thickness of the tube body 110.

When the aperture of the sheet material 111 is within 0.3-200 μm, especially within 1-100 μm, the filter tube has better filtering precision. When the pore diameter is 1.5-50 μm, preferably 2-30 μm, the filter has good air permeability besides ensuring good filtering precision. Specifically, the pore diameter of the sheet-like material 111 may be 0.3 μm, 0.5 μm, 1 μm, 1.5 μm, 2 μm, 2.5 μm, 3 μm, 5 μm, 8 μm, 10 μm, 15 μm, 20 μm, 25 μm, 30 μm, 50 μm, 100 μm, 150 μm, 200 μm, or other values.

The larger the distance between two adjacent filter tubes 100 is, the fewer the filter tubes 100 in the limited installation space are, and the smaller the distance between two adjacent filter tubes 100 is, the more easily the filter tubes 100 are bridged by dust; when the distance between two adjacent filter tubes 100 is 5-100 mm, not only can more filter areas be obtained in a limited space, but also the bridging condition of dust between the adjacent filter tubes 100 can be reduced. When the distance between two adjacent filter tubes 100 is 5-60 mm, preferably 5-40 mm, and more preferably 8-30 mm, the coordination between the dust bridging and the filter area is the best. In specific implementation, the distance between two adjacent filter tubes 100 is 5mm, 6mm, 7mm, 8mm, 10mm, 15mm, 20mm, 25mm, 30mm, 40mm, 60mm, 80mm, 100mm or other values.

When the length of the filter tube 100 is 100-5000 mm, especially 100-3000 mm, the filter tube can have better back flushing uniformity and higher filtering area, and is convenient to transport. When the length of the filter tube 100 is 100-2000 mm, preferably 200-1500 mm, the filter volume can be reduced remarkably. In particular implementations, the length of the filter tube 100 can be 100mm, 200mm, 300mm, 400mm, 500mm, 800mm, 1000mm, 1200mm, 1500mm, 2000mm, 2500mm, 3000mm, or other values.

Fig. 2 is a schematic diagram of a second embodiment of a filter tube 100. As shown in fig. 2, on the basis of the first embodiment, when the length of the filter tube 100 is long (for example, greater than or equal to 3000mm), for the convenience of transportation, the filter tube 100 has at least two tube bodies 110 connected end to end by a connector 120, and the length of the tube body 110 is preferably 100 to 2000mm, and more preferably 200 to 1500 mm; in order to facilitate welding or bonding, the connecting head 120 has protrusions or grooves at both ends for matching with the tube body 110.

Fig. 3 is a schematic structural view of a third embodiment of a filter tube. As shown in fig. 3, in the first embodiment, for the pipe 110 with a larger outer diameter (for example, 90 to 200mm), in order to improve the self-supporting property of the pipe 110, a support body is provided inside the pipe 110, the support body includes a support ring 131 and a keel 132 connected to the inner side of the support ring 131, and the keel 132 is a rod body distributed along the axial direction of the filter tube 100.

The support body is obviously different from the support body built in a non-metal cloth bag in the prior art: the support in the bag has a very large number of keels 132 and the keels 132 are located outside the support ring 131, i.e. the keels 132 support the bag. In the filter tube 100 of the present invention, the number of the keels 132 disposed inside the support ring 131 can be as low as one, and the keels 132 only fix the position of the support ring 131, because the strength of the tube 110 is much higher than that of the filter bag, the tube 110 only needs to be simply supported by the support ring 131, which not only reduces the weight, but also avoids the increase of the filtering resistance due to the complicated structure of the support body.

Compared with the metal ceramic filter element in the prior art, the filter tube has the following obvious advantages: firstly, the tube body 110 is made of a thin, bendable and foldable sheet-like material 111, which has better air permeability and lower filtration resistance; secondly, the pipe body 110 is formed by rolling the sheet-like material 111 without a die and performing a complicated press molding operation, and the cost is significantly reduced.

Compared with the non-metal cloth bag in the prior art, the filter tube has the following obvious advantages: firstly, the pipe body 110 is made of a sheet-shaped material 111, has more excellent high-temperature resistance and can achieve higher filtering precision; secondly, the pipe diameter of the pipe body 110 is smaller, and the pipe body 110 can maintain its shape when in use even without a support body because the metal porous material has a strength superior to that of the cloth bag material.

In addition, the present invention provides a method for preparing the filter tube 100, comprising the steps of: the thin sheet material 111 with the thickness of 0.2-2.5 mm is rolled into a pipe body 110 with the outer diameter of 20-200 mm, and the seam 112 is fixed and sealed by welding or bonding.

Fig. 4 shows a rolled tube body in an embodiment. As shown in fig. 4, the seam 112 of the tube body 110 is parallel to the central axis of the filter tube 100, and the tube body 110 is obtained by butting the wide side against the long side of a rectangular sheet-like material 111 whose diameter matches that of the tube body 110.

Fig. 5 shows a rolled pipe body in another embodiment. As shown in fig. 5, the seam 112 of the pipe body 110 is in a spiral shape, and the pipe body 110 is manufactured by using a manufacturing method disclosed in chinese patent application No. 2019102093126 entitled "filter structure and manufacturing method of filter structure".

The filter tube 100 can be used alone, but is preferably applied to the following filter element 200 and filter, i.e., a filter densely arranged in a filter for gas-solid separation and/or liquid-solid separation of a substance to be filtered.

Second, filter element

Based on the defect that the traditional large-diameter single-tube filter element has a small filtering area, the invention provides the following first filter element.

Fig. 6 is a schematic view of an embodiment of a first filter cartridge. As shown in fig. 6, the filter element 200 includes at least two filter tubes 100 arranged at intervals, wherein the tube body 110 of the filter tube 100 is formed by rolling a sheet-like material 111 made of metal or a metal as a base to shape and seal the seam 112; the outer diameter of the rolled pipe body 110 is only 20-200 mm, preferably 20-90 mm, more preferably 20-60 mm, and even more preferably 25-50 mm; the filter cartridge 200 further includes a securing assembly including a head securing structure and a tail securing structure; the head fixing structure comprises an upper joint 210, the upper joint 210 is provided with a mounting hole matched with one end of the filter tube 100, the tail fixing structure comprises a plug 220 matched with the other end of the filter tube 100, and clean gas formed after the gas to be filtered on one side of the upper joint 210 passes through the tube wall of the filter tube 100 is discharged from the other side of the upper joint 210.

Therefore, by bundling the filter tubes 100 with a diameter much smaller than that of the conventional large-diameter single-tube filter element 200 into a whole, the first filter element 200 of the present invention has a filtering area much larger than that of the conventional large-diameter single-tube filter element 200 in the same installation space.

When the filter tubes 100 in the first filter element 200 further have any one of the used spacing, length, tube wall thickness, material and pore size of the filter tubes 100, a better use effect can be obtained.

In order to solve the technical problems that the length of the traditional large-diameter single-pipe filter element 200 cannot be further increased due to the limitation of the size of the filter, and the back-blowing effectiveness of the filter element 200 is poor due to the overlong length, the invention provides the following second filter element.

The filter cartridge 200 includes at least two filter tubes 100 arranged at intervals and a fixing assembly shown in fig. 6; wherein, the body 110 of the filter tube 100 is formed by rolling a sheet-like material 111 made of metal or metal as a base to shape and seal a seam 112; the outer diameter of the rolled pipe body 110 is only 20-200 mm, preferably 20-90 mm, more preferably 20-60 mm, and even more preferably 25-50 mm, and the length of the filter pipe 100 is 100-5000 mm, preferably 100-3000 mm, even more preferably 100-2000 mm, and even more preferably 200-1500 mm.

Therefore, for a filter with a smaller volume, the filter element 200 can be shortened by bundling the filter tubes 100 to solve the defect that the length of the filter element 200 is not matched with the filter area, and a more uniform back flushing effect can be obtained.

When the filter tubes 100 in the second filter element 200 further have any one of the service intervals, the tube wall thickness, the material and the pore diameter of the filter tubes 100, a better service effect can be obtained.

In order to maximize the filtering area in a limited space, the filtering area can be maximized by a special arrangement in addition to adjusting the interval between the adjacent filtering tubes 100. Thus, the present invention provides a third cartridge as follows.

The filter cartridge 200 has a plurality of filter units arranged in concentric circular rings and/or parallel straight lines in a cross section of the filter cartridge 200, each filter unit including one or more filter tubes 100 arranged at intervals and a fixing assembly shown in fig. 6; wherein, the body 110 of the filter tube 100 is formed by rolling a sheet-like material 111 made of metal or metal as a base to shape and seal a seam 112; the outer diameter of the rolled pipe body 110 is only 20-200 mm, preferably 20-90 mm, more preferably 20-60 mm, and even more preferably 25-50 mm.

Fig. 7 is a schematic structural diagram of an embodiment of a plurality of filter units in the third filter cartridge 200, which are arranged in a concentric circular ring and a parallel straight line. In fig. 7, in the cross section of the filter element 200, the line connecting the centers of the adjacent three filter tubes 100 is an equilateral triangle.

Fig. 8 is a schematic view of another embodiment of a third filter cartridge 200 in which a plurality of filter units are arranged in parallel. In fig. 8, the cross section of the filter cartridge 200 is a square shape in which the centers of four adjacent filter tubes 100 are connected.

When the upper connector 210 is rectangular, it is preferable to adopt the arrangement of the filter tubes 100 shown in fig. 8, so that as many filter tubes 100 as possible can be maximally installed on the upper connector 210.

For the circular and square top connectors 210, the square top connector 210 can be used to install more filter tubes 100 and obtain a larger filtering area when the diameter and the side length are the same and the spacing between the filter tubes is the same.

When the filter tube 100 of the third filter element 200 further has any one of the used distance, length, tube wall thickness, material and aperture of the filter tube 100, a better use effect can be obtained.

Because the filter element 200 is formed by bundling a plurality of filter tubes 100, the tube diameter of the filter tubes 100 is obviously reduced, the installation surface is reduced, and the inner support can be omitted, the fixing mode of the traditional large-diameter single-tube filter element 200 is not suitable to be adopted. Accordingly, the present invention provides a fourth cartridge as follows.

The filter element 200 comprises at least two filter tubes 100 arranged at intervals and a fixing component shown in fig. 6, namely, at least two groups of mounting holes, filter tubes 100 and plugs 220 are provided; wherein, the body 110 of the filter tube 100 is formed by rolling a sheet-like material 111 made of metal or metal as a base to shape and seal a seam 112; the outer diameter of the rolled pipe body 110 is only 20-200 mm, preferably 20-90 mm, more preferably 20-60 mm, and even more preferably 25-50 mm; the upper connector 210 is circular or rectangular to facilitate manufacturing and installation.

The distance between the outermost mounting hole and the edge of the upper joint 210 is 1 to 30mm, preferably 2 to 15mm, so that there is enough mounting surface to sealingly mount the filter cartridge 200 in the filter. In specific implementation, the distance is 1mm, 2mm, 4mm, 6mm, 8mm, 10mm, 12mm, 15mm, 20mm, 25mm, 30mm or other values.

The inner wall of the mounting hole is hermetically connected with the outer wall of the filter tube 100 in a welding, bonding or expansion connection mode; the mounting hole with the width of the connection face between the filter tube 100 is 5 ~ 50mm, preferably 8 ~ 20 mm.

The plug 220 is connected with the inner wall and/or the outer wall of the filter tube 100 in a sealing way, the sealing connection way is welding or bonding, and the plug 220 is provided with a bulge matched with the inner wall of the filter tube 100 or a groove matched with the outer wall of the filter tube 100; the width of the connecting surface between the plug 220 and the filter tube 100 is 5-50 mm, preferably 8-20 mm.

The wider the connecting surface, the more excellent sealing effect is obtained, but the thickness of the head fixing structure is increased accordingly to increase the weight, so that the connecting surface can have both high sealing performance and low weight when the width is 5 to 50mm, preferably 8 to 20 mm. In specific implementations, the width of the connecting surface is 5mm, 8mm, 10mm, 15mm, 20mm, 30mm, 50mm or other values.

When expansion joint is adopted, the head fixing structure further comprises an expansion head 211 arranged inside the filter tube 100.

Fig. 9 is a schematic diagram of a first embodiment of the fourth filter cartridge 200 in order to improve the sealing effect when expansion joint is adopted. As shown in fig. 9, the expansion head 211 is in curved contact with the filter tube 100.

Fig. 10 is a schematic diagram of a second embodiment of the fourth filter cartridge 200 in order to improve the sealing effect when expansion connection is adopted. As shown in fig. 10, the head fixing structure further includes a sealing structure 212 provided between the filter tube 100 and the mounting hole.

In order to achieve the optimal sealing effect, in the third embodiment of improving the sealing effect, the expansion head 211 is in curved contact with the filter tube 100, and the head fixing structure further includes a sealing structure 212 disposed between the filter tube 100 and the mounting hole.

The sealing structure 212 is preferably made of a sealing material capable of withstanding high temperatures.

Fig. 11 is a schematic view of a second embodiment of a fourth cartridge. As shown in fig. 11, in the first embodiment, in order to prevent the filter cartridge 200 from being collided by the oscillation of the adjacent filter tubes 100 due to the fluid when the filter cartridge 200 is used, the filter cartridge 200 further includes a tail frame 230 connected to the plug 220, and three pull rods 240 connecting the upper connector 210 and the tail frame 230, and the three pull rods 240 are symmetrically distributed. Thus, the end cap 220 is fixed by the tail bracket 230, thereby preventing the filter tube 100 from swinging, and the pull rod 240 can improve the strength of the filter cartridge 200.

When the filter tube 100 in the fourth filter element 200 further has any one of the used distance, length, tube wall thickness, material and pore size of the filter tube 100, a better use effect can be obtained.

After the filter tubes 100 are bundled, the traditional venturi tube 300 is adopted to perform single-tube back flushing, so that a back flushing structure is complex to install and difficult to control. Accordingly, the present invention provides a fifth filter cartridge.

Fig. 12 is a schematic view of an embodiment of a fifth cartridge. As shown in fig. 12, the filter cartridge 200 has at least two filter tubes 100 arranged in a spaced apart relationship and a mounting assembly as shown in fig. 6; wherein, the body 110 of the filter tube 100 is formed by rolling a sheet-like material 111 made of metal or metal as a base to shape and seal a seam 112; the outer diameter of the rolled pipe body 110 is only 20-200 mm, preferably 20-90 mm, further preferably 20-60 mm, further preferably 25-50 mm, the distance between two adjacent filter pipes 100 is 5-100 mm, preferably 5-60 mm, further preferably 5-40 mm, further preferably 8-30 mm; the filter element 200 further comprises a venturi tube 300, the air outlet directions of the at least two filter tubes 100 arranged at intervals are both located at the inner side of the venturi tube 300, and the shape of the air outlet of the purge gas inside the venturi tube 300 and the shape of the upper joint 210 are both rectangular or circular.

Thus, all the filter tubes 100 in one filter element 200 are simultaneously back-blown by the venturi tube 300, which is easier to control and install.

The venturi 300 has a first conical pipe section 311, a first vertical pipe section 321 and a second conical pipe section 312 connected in sequence, wherein the cross-sectional area of the first conical pipe section 311 decreases in the flow direction of the internal purge gas, and the cross-sectional area of the second conical pipe section 312 increases in the flow direction of the internal purge gas. In order to facilitate installation of the filter element 200 after the venturi tube 300 is additionally arranged, the venturi tube 300 further includes a second vertical tube section 322 and a step 330, wherein the second vertical tube section 322 is connected with the second conical tube section 312, the installation hole is located at the inner side of the second vertical tube section 322, the step 330 is arranged at the bottom of the outer side of the second vertical tube section 322, and the step 330 is hermetically connected with the upper connector 210 through a pressing mechanism.

When the width of the step 330 is 1-30 mm, preferably 2-15 mm, the installation is convenient. In specific implementations, the width of the step 330 is 1mm, 2mm, 4mm, 6mm, 8mm, 10mm, 12mm, 15mm, 20mm, 25mm, 30mm, or other values.

The included angle between the side wall of the second cone pipe section 312 and the central axis of the venturi 300 is 10-30 degrees, and therefore the back flushing effect is best. In specific implementation, the included angle is 10 °, 12 °, 14 °, 16 °, 18 °, 20 °, 22 °, 23 °, 25 °, 28 °, 30 ° or other numerical values.

The size of the output end of the internal scavenging air of the second conical pipe section 312 is 2-4 times of the size of the input end, and therefore the back flushing effect is the best. In specific implementation, the multiple is 2 times, 2.4 times, 2.8 times, 3.2 times, 3.6 times, 4 times or other values.

When the filter tube 100 of the fifth filter element 200 further has any one of the wall thickness, material, pore size and length of the filter tube 100, a better use effect can be obtained.

Because the filtration area of the filter element 200 obtained by bundling the filter tubes 100 is significantly increased, a larger blowback pressure needs to be applied by adopting the traditional blowback ash removal mode, and because the distance between the filter tubes 100 is reduced, dust is easily bridged between the filter tubes 100 and is not easy to be removed by blowback. Accordingly, the present invention provides a sixth cartridge.

Fig. 13 is a schematic view of an embodiment of a sixth cartridge. As shown in fig. 13, the filter cartridge 200 has at least two filter tubes 100 arranged in a spaced apart relationship and a mounting assembly as shown in fig. 6; wherein, the body 110 of the filter tube 100 is formed by rolling a sheet-like material 111 made of metal or metal as a base to shape and seal a seam 112; the outer diameter of the rolled pipe body 110 is only 20-200 mm, preferably 20-90 mm, further preferably 20-60 mm, further preferably 25-50 mm, the distance between two adjacent filter pipes 100 is 5-100 mm, preferably 5-60 mm, further preferably 5-40 mm, further preferably 8-30 mm; the filter element 200 further comprises an ash removal structure, and the ash removal structure comprises an internal ash removal mechanism for removing ash from the inside of the filter tube 100 and an external ash removal mechanism for removing ash from the outside of the filter tube 100.

From this, through setting up inside deashing mechanism and outside deashing mechanism simultaneously, not only can show and promote the deashing effect, resume gas flux fast, can clear away the dust bridging between the chimney filter 100 fast moreover.

The internal ash removal mechanism includes a venturi 300, shown in fig. 12, disposed at the outlet of the filter element 200.

The external ash removal mechanism includes a first ash removal hole 213 disposed on the upper joint 210. In order to facilitate the transportation of the external purge gas, a through hole 340 is provided on the sidewall of the venturi 300, and the external purge gas passes through the through hole 340 and the first soot cleaning hole 213 in sequence to purge the outer surface of the filter tube 100. The number of the first dust removing holes 213 is at least two, and the first dust removing holes are uniformly distributed, so that an external dust removing effect is improved.

When the filter tube 100 of the sixth filter element 200 further has any one of the wall thickness, material, pore size and length of the filter tube 100, a better use effect can be obtained.

In the above six types of filter cartridges 200, the outer diameter of the filter tube 100, the usage pitch of the filter tube 100, the length of the filter tube 100, the wall thickness of the filter tube 100, the pore diameter of the film-like material 111, and the material are the same as above.

The six filter cartridges 200 described above may also be employed with any of the filter tubes 100 of fig. 2-5.

The above-mentioned six filter cartridges 200 can be combined with each other in terms of technical solutions and technical features without conflict.

The six filter cartridges 200 described above can be applied to the modification of the electric dust collector 800 or other dust removing equipment on one hand, and can be applied to the following filter for performing gas-solid separation filtration and/or liquid-solid separation filtration on the object to be filtered on the other hand, wherein the number of the filter tubes 100, the number of the filter cartridges 200, and the length of the filter cartridges 200 in each filter cartridge 200 can be adjusted according to the size of the filter housing 417.

Third, the filter

First, in order to solve the technical problems of small filtering area of the filter and overlarge volume caused by increasing the filtering area, the invention provides a first filter.

FIG. 14 is a schematic diagram of a first embodiment of a filter. As shown in fig. 14, the filter includes a filter structure including a filter cartridge 200, the filter cartridge 200 having at least two filter tubes 100 arranged in a spaced apart relationship and a fastening assembly as shown in fig. 6; wherein, the body 110 of the filter tube 100 is formed by rolling a sheet-like material 111 made of metal or metal as a base body to shape and seal the seam; the outer diameter of the rolled pipe body 110 is only 20-200 mm, preferably 20-90 mm, further preferably 20-60 mm, further preferably 25-50 mm, the length of the filter pipe 100 is 100-5000 mm, preferably 100-3000 mm, further preferably 100-2000 mm, further preferably 200-1500 mm; the filter also comprises an original air cavity 413 and a clean air cavity 414, the filtering structure is positioned between the original air cavity 413 and the clean air cavity 414, the original air cavity 413 is connected with an ash bucket 416 and an air inlet pipe 411, the clean air cavity 414 is connected with an air outlet pipe 412, clean air formed after the air to be filtered in the original air cavity 413 passes through a filter element 200 of the filtering structure enters the clean air cavity 414 and is discharged from the air outlet pipe 412, and dust intercepted by the filter element 200 is discharged from the ash bucket 416.

Therefore, by adopting the cluster filter element 200 formed by clustering the filter tubes 100 with the tube diameter far smaller than that of the existing large-diameter single-tube filter element 200, the filter of the invention can more easily reach a high filtering area in the same installation space. Meanwhile, for a filter with a small volume, the length of the filter element 200 can be shortened by bundling the filter elements 200 to solve the defect that the length of the filter element 200 is not matched with the filtering area.

In order to facilitate the discharge of dust, the filter element 200 is generally vertically disposed above the original air chamber 413, however, the filter element 200 may extend either upward of the upper joint 210 or downward of the upper joint 210.

When the filter tubes 100 of the first filter further have any one of the used spacing, the tube wall thickness, the material and the pore size of the filter tubes 100, a better use effect can be obtained.

For filters that are bulky and require many filter tubes 100, the present invention provides a second filter for ease of installation.

FIG. 15 is a schematic diagram of a second filter configuration in accordance with one embodiment. As shown in fig. 15, the filter includes a filter structure including a first support structure 420 and at least two filter cartridges 200 arranged in a spaced apart relationship; the filter cartridge 200 includes at least two filter tubes 100 arranged at intervals and a fixing assembly shown in fig. 6; wherein, the body 110 of the filter tube 100 is formed by rolling a sheet-like material 111 made of metal or metal as a base to shape and seal a seam 112; the outer diameter of the rolled pipe body 110 is only 20-200 mm, preferably 20-90 mm, more preferably 20-60 mm, and even more preferably 25-50 mm; the first supporting structure 420 has a first installation channel 421, and the upper joint 210 is connected with the first installation channel 421 in a sealing manner; the filter also includes a raw gas chamber 413, a clean gas chamber 414, a dust hopper 416, an inlet pipe 411 and an outlet pipe 412 shown in fig. 14.

Thus, the use of a plurality of filter elements 200 can reduce the weight of the filter elements 200 while ensuring a high filtration area, simplifying installation; meanwhile, for the filtering structure with a large number of required filtering pipes 100, a plurality of filter elements 200 are respectively arranged to ensure a uniform back flushing effect.

When the filter tubes 100 of the second filter further have any one of the used spacing, tube wall thickness, material, length and pore size of the filter tubes 100, a better use effect can be obtained.

To facilitate installation of the bundled cartridge 200, a third filter is provided.

In the first embodiment of the third filter, the upper joint 210 of the third filter is connected to the first installation channel 421 by a pressing mechanism in a sealing manner on the basis of the second filter.

Fig. 16 is a schematic structural diagram of a first embodiment of a first support structure 420. As shown in fig. 16, the first supporting structure 420 is a first orifice plate 422 connected to the filter housing 417, and the first orifice plate 422 has the first installation passage 421.

Fig. 17 is a schematic structural diagram of a second embodiment of the first support structure 420. As shown in fig. 17, the first supporting structure 420 is at least two first supporting beams 423 connected to the filter housing 417, and the first mounting passage 421 is formed between the first supporting beams 423 and the first supporting beams 423, and at this time, the first mounting passage 421 and the filter housing 417 have rectangular cross sections.

In a second embodiment of the third filter, the difference from the first embodiment is that: the filter further comprises a filter assembly including at least two filter structures arranged at intervals and a second support structure 430, wherein the second support structure 430 is provided with a second installation channel 431, and the first support structure 420 and the second installation channel 431 are also connected in a sealing mode through a pressing mechanism. In this case, the filter structure having the plurality of filter cartridges 200 may be integrally mounted to the second mounting passage 431 of the second support structure 430 after being assembled in advance.

Fig. 18 is a schematic structural view of a first embodiment of a second support structure 430. As shown in fig. 18, the second support structure 430 is a second orifice plate 432 connected to the filter housing 417, and the second orifice plate 432 has the second installation passage 431.

Fig. 19 is a schematic structural view of a second embodiment of a second support structure 430. As shown in fig. 19, the second supporting structure 430 is at least two second supporting beams 433 connected to the filter housing 417, and the second supporting beams 433 form a second installation channel 431 therebetween, in this case, the first installation channel 421, the second installation channel 431, and the filter housing 417 are rectangular in cross section.

The connection of the first support structure 420 to the second installation channel 431 and the connection of the upper joint 210 to the first installation channel 421 may use the same or different pressing mechanisms.

Taking the connection of the pressing mechanism between the filter element 200 with the venturi tube 300 and the first installation channel 421 shown in fig. 12 as an example, the pressing mechanism can be divided into the following three specific embodiments:

fig. 20-21 are schematic structural views of a first embodiment of a hold-down mechanism. As shown in fig. 20 to 21, the pressing mechanism includes: a pressing plate 441, the upper joint 210 and the step 330 being clamped between the pressing plate 441 and the first support structure 420; a compression assembly connecting the compression plate 441 and the first support structure 420. Wherein fig. 20 is a top-down push-in type mounting and fig. 21 is a bottom-up push-in type mounting.

Fig. 22 is a schematic structural view of a second embodiment of the hold-down mechanism. As shown in fig. 22, the pressing mechanism includes: a compression plate 441, the step 330 being clamped between the compression plate 441 and the first support structure 420; a compression assembly connecting the compression plate 441, the upper joint 210, and the first support structure 420.

In fig. 20-22, the pressing plate 441 can fix 2-4 filter elements 200 at the same time, or can fix only one filter element 200; when the pressing plate 441 is connected to only one filter cartridge 200, it is preferable to provide a pad plate 442 connected to the first support structure 420 at the bottom of the pressing plate 441.

Fig. 23 is a schematic structural view of a third embodiment of the pressing mechanism. As shown in fig. 23, the pressing mechanism includes a pressing assembly connecting the upper joint 210 and the first support structure 420, and the step 330 is clamped between the upper joint 210 and the first support structure 420.

In the above three embodiments, the pressing assembly is the screw rod 446 and the nut 444, or the bolt 445 and the nut 444, and when the screw rod 446 is adopted, one end of the screw rod 446 should be integrally connected with the matching surface of the uppermost end or the lowermost end.

In the above three embodiments, a sealing layer 443 is disposed on the mating surfaces of the pressing plate 441 and the first supporting structure 420.

When the first supporting structure 420 and the second installation channel 431 are connected by the above-mentioned pressing mechanism, the first supporting structure 420 corresponds to the upper joint 210, and the second supporting structure 430 corresponds to the first supporting structure 420.

The above-mentioned installation connection manner can be selected according to the sizes of the raw air chamber 413 and the clean air chamber 414. When the clean air chamber 414 is sized to be sufficiently accessible to an installer, a push-down installation is preferred, wherein if the width of the top head 210 is greater than the width of the first installation channel 421, the top head 210 will be clamped over the first support structure 420, such that the first support structure 420 will pre-support the cartridge 200 without lifting the cartridge 200 when installing the hold-down mechanism.

When the filter tube 100 of the third filter further has any one of the used distance, the tube wall thickness, the material, the length and the pore diameter of the filter tube 100, a better use effect is obtained.

Because the number of the filter tubes 100 of the filter is obviously increased and a plurality of filter elements 200 can be arranged, the traditional single-tube back-blowing structure and back-blowing effect can not meet the process requirements any more. Thus, the present invention provides a fourth filter.

FIG. 24 is a schematic construction of a first embodiment of a fourth filter. As shown in fig. 24, on the basis of the second filter or the third filter, the fourth filter further includes an ash removal structure, and the ash removal structure includes an internal ash removal mechanism for removing ash from the inside of the filter tube 100 and an external ash removal mechanism for removing ash from the outside of the filter tube 100; wherein, the external deashing mechanism comprises a first mechanism.

FIG. 25 is a schematic diagram of a second embodiment of a fourth filter. As shown in fig. 25, the difference from the first embodiment is that: the external ash removal mechanism comprises a second mechanism.

FIG. 26 is a schematic view of a third embodiment of a fourth filter. As shown in fig. 26, the difference from the first embodiment is that: the external ash removal mechanism comprises a first mechanism and a second mechanism.

The internal ash removal mechanism comprises an internal purge gas delivery pipe 451 and a venturi 300 shown in fig. 12, wherein the internal purge gas delivery pipe 451 penetrates through the filter housing 417, and a branch pipe 453 facing the venturi 300 is arranged on the internal purge gas delivery pipe 451 inside the filter.

The distance between the air outlet of the branch pipe 453 and the venturi 300 is 3-10 cm, and in specific implementation, the distance is 3cm, 4cm, 5cm, 6cm, 7cm, 8cm, 9cm, 10cm or other values.

The distance between the air outlet of the branch pipe 453 and the venturi 300 refers to a distance between the air outlet of the branch pipe 453 and a plane in which the internal purge gas inlet of the venturi 300 is located.

The cross-section of the branch tube 453 may be circular, or when the cross-section of the venturi 300 is rectangular, the cross-section of the branch tube 453 may be rectangular.

A first main valve 452 is arranged on the internal purge gas conveying pipe 451, and the first main valve 452 is a pulse valve.

The first mechanism comprises a first external purge gas pipe 461 with an air outlet positioned between the filter pipe 100 and the filter pipe 100 in each filter element 200 and a first dust cleaning hole 213 arranged on the upper joint 210, a through hole 340 is arranged on the venturi tube 300, and the first external purge gas pipe 461 sequentially passes through the filter shell 417 and the through hole 340 and then is hermetically connected with the first dust cleaning hole 213; a second main valve 462 is arranged on the first external purge gas transmission pipe 461, and the second main valve 462 is an electromagnetic valve.

The second mechanism comprises a second external purge gas pipe 471 and a second dust cleaning hole, wherein the gas outlet of the second external purge gas pipe 471 is positioned between the filter element 200 and the filter element 200, the second dust cleaning hole is formed in the first supporting structure 420, and the second external purge gas pipe 471 is connected with the second dust cleaning hole in a sealing mode after penetrating through the filter shell 417; a third main valve 472 is arranged on the second external purge gas delivery pipe 471, and the third main valve 472 is an electromagnetic valve.

FIG. 27 is a schematic structural view of a fourth embodiment of a fourth filter. As shown in fig. 27, on the basis of the three embodiments, when the number of the filter elements 200 is large, a group blowback manner is adopted, that is, the internal ash removal mechanism includes at least two internal purge gas pipes 451, and each internal purge gas pipe 451 is provided with at least two branch pipes 453.

When the filter tube 100 of the fourth filter further has any one of the used distance, the tube wall thickness, the material, the length and the pore diameter of the filter tube 100, a better use effect can be obtained.

Since the filter may have a plurality of cartridges 200 and each cartridge 200 has a plurality of filter tubes 100, the filter is more likely to experience system fluctuations due to clogging and damage to the filter tubes 100. Thus, the present invention provides a fifth filter.

FIG. 28 is a schematic view of the structure of the first embodiment of the fifth filter. As shown in fig. 28, the filter further includes a pressure detection structure on the basis of the second filter, the third filter, or the fourth filter; the pressure detection structure comprises a first pressure detector 481 for detecting the gas pressure before filtration and a second pressure detector 482 for detecting the gas pressure after filtration, wherein a venturi tube 300 shown in fig. 12 is arranged at the gas outlet of each filter element 200, and the second pressure detector 482 is arranged at an internal back-blowing gas inlet 643 of each venturi tube 300; in order to achieve a better filtering effect, a temperature detector 483 is arranged on the air inlet pipe 411 and the air outlet pipe 412.

Therefore, the detection of the pressure of the air outlet of each filter element 200 is beneficial to the targeted dust removal of the blocked filter elements 200 and the maintenance of the air-leaking filter elements 200.

In a second embodiment of the fifth filter, on the basis of the first embodiment, a controller is used to control the closing of the first main valve 452, the second main valve 462 and the third main valve 472 according to the detection result of the pressure detection structure, so as to realize automatic control of ash removal to save manpower.

When the filter tube 100 of the fifth filter further has any one of the used distance, the tube wall thickness, the material, the length and the pore diameter of the filter tube 100, a better use effect is obtained.

When the filter adopts the filter element 200 formed by bundling the filter tubes 100, the installation height of the filter structure can be reduced, and the space of the original air cavity 413 can be increased. Thus, in order to make the most of the original air chamber 413, the present invention provides a sixth filter.

FIG. 29 is a schematic view of the construction of the first embodiment of the sixth filter. As shown in fig. 29, the filter comprises a raw gas chamber 413, a clean gas chamber 414 and a filter structure located between the raw gas chamber 413 and the clean gas chamber 414, the filter structure comprises one or more filter elements 200 and a first support structure 420, the filter element 200 comprises at least two filter tubes 100 arranged at intervals and a fixing assembly shown in fig. 6; wherein, the body 110 of the filter tube 100 is formed by rolling a sheet-like material 111 made of metal or metal as a base to shape and seal a seam 112; the outer diameter of the rolled pipe body 110 is only 20-200 mm, preferably 20-90 mm, further preferably 20-60 mm, further preferably 25-50 mm, the length of the filter pipe 100 is 100-5000 mm, preferably 100-3000 mm, further preferably 100-2000 mm, further preferably 200-1500 mm; the filter also comprises a purification structure 500 for chemically catalyzing and/or physically adsorbing volatile gas, wherein the purification structure 500 is arranged between the air outlet of the purification cavity 414 and the filtering structure; the purification structure 500 is detachably connected with the filter housing 417, that is, a support bar 510 is arranged inside the filter, and the support bar 510 is connected with the purification structure 500 by a bolt 445 and a nut 444.

Therefore, the filter has the functions of filtering and purifying, occupies small area and can fully reduce the equipment cost.

Fig. 30 is a schematic structural view of a first embodiment of a purification structure 500 in a sixth filter. As shown in fig. 30, the purification structure 500 has an inlet plate 530, an outlet plate 540, and a cavity between the inlet plate 530 and the outlet plate 540, wherein the inlet plate 530 and the outlet plate 540 are provided with vent holes 550, a honeycomb-shaped partition 560 is disposed in the cavity, and each cell of the partition 560 is filled with an active material for chemically catalyzing and/or physically adsorbing volatile gas.

In a second embodiment of the purification structure 500, the purification structure 500 has an air permeable support and an active material attached to the air permeable support that chemically catalyzes and/or physically adsorbs volatile gases. When the purification structure 500 is folded in a corrugated shape, the active working surface can be lifted in a limited space; the breathable support adopts a fiber felt, a foam porous support body or a support net; when the breathable support adopts a support net, the support net is any one of a woven net, a punched net and an inclined pull net.

In a third embodiment of the purification structure 500, the purification structure 500 has a honeycomb shape formed by mixing and pressing an active material that chemically catalyzes and/or physically adsorbs a volatile gas and a binder.

FIG. 31 is a schematic diagram of a second embodiment of a sixth filter. As shown in fig. 31, in the first embodiment, a support plate 520 is provided in the filter, and the purification structure 500 is directly placed on the support plate 520.

In the first embodiment of the active material, the active material for chemically catalyzing the volatile gas may be, but is not limited to, any one of a formaldehyde catalyst and a denitration catalyst.

In a second embodiment of the active material, the active material for physically adsorbing volatile gases may be, but is not limited to, activated carbon, diatomaceous earth, silica gel, molecular sieves, and activated alumina.

In a third embodiment of the active material, the active material is a mixed material formed by an active material for chemically catalyzing volatile gas and an active material for physically adsorbing volatile gas, for example, a formaldehyde purification material and a formaldehyde purification porous film containing the formaldehyde purification material disclosed in chinese patent application No. 2019110855507 entitled "formaldehyde purification porous film and preparation method thereof", and a formaldehyde purification material preparation containing the formaldehyde purification material disclosed in chinese patent application No. 2019110854345 entitled "formaldehyde purification material preparation, preparation method and application".

In a fourth embodiment of the active material, the active material is a composite material formed by an active material that chemically catalyzes a volatile gas and an active material that physically adsorbs a volatile gas, for example, a formaldehyde adsorption-catalytic decomposition composite material and a formaldehyde purification porous film containing the formaldehyde adsorption-catalytic decomposition composite material disclosed in chinese patent application No. 2019110855583 entitled "formaldehyde adsorption-catalytic decomposition composite material, preparation method and application", and a formaldehyde adsorption-catalytic decomposition composite material and a formaldehyde purification material preparation containing the formaldehyde adsorption-catalytic decomposition composite material disclosed in chinese patent application No. 2019110854326 entitled "formaldehyde purification material preparation, preparation method and application".

A dust-free chamber 415 is left between the purification structure 500 and the filtering structure, and the dust cleaning structure is arranged in the dust-free chamber 415.

When the filter tube 100 of the sixth filter further has any one of the used distance, the tube wall thickness, the material and the pore size of the filter tube 100, a better use effect is obtained.

In order to solve the technical problem that the filter element 200 cannot be timely and effectively treated at low cost due to damage and failure, the invention provides a seventh filter.

Fig. 32-36 are schematic structural views of a first embodiment of a seventh filter. Fig. 32 is a use state diagram of the maintenance structure when the filter element normally operates, fig. 33 is a use state diagram of the maintenance structure when the filter element fails, fig. 34 is a use state diagram of the link mechanism when the filter element normally operates, fig. 35 is a use state diagram of the link mechanism when the filter element fails, and fig. 36 is a sectional view of the drive mechanism and the first rod body.

As shown in fig. 32-36, the filter includes a filter arrangement including one or more filter elements 200 in a spaced arrangement, a soot cleaning arrangement, and a maintenance arrangement; the ash removing structure at least comprises the internal ash removing mechanism; the maintenance structure includes: the plugging mechanism is used for plugging the air outlet of the filter element 200 when the filter element 200 fails; the connecting rod mechanism is used for controlling the plugging mechanism to plug the air outlet of the filter element 200 when the filter element 200 fails; and a driving mechanism 640 for driving the link mechanism when the filter cartridge 200 is out of order; when the filter element 200 is not out of order, the plugging mechanism is arranged on the branch pipe 453 of the inner purge gas pipe 451; when the filter element 200 is out of order, the blocking mechanism blocks the internal purge gas inlet of the venturi tube 300.

The plugging mechanism comprises: a plug 220 groove, the bottom of which is provided with a first through hole 340 matched with the branch pipe 453, the outer shape of the plug 220 groove is matched with the shape of the inner purge gas inlet of the venturi 300; the plug 220 is connected with the plug 220 groove, and the plug 220 is provided with a second through hole 340 matched with the branch pipe 453; and a blocking ball 613, wherein the blocking ball 613 is positioned in a cavity formed by the groove of the plug 220 and the cover of the plug 220; when the filter cartridge 200 is not out of order, the branch tube 453 passes through the first and second through

holes

340 and 340 in sequence so that the blocking ball 613 is positioned between the branch tube 453 and the inner wall of the groove of the plug 220; when the filter cartridge 200 malfunctions, the stopper 220 is dropped into the inner purge gas inlet of the venturi 300 and the branch pipe 453 is separated from the second through-hole 340 so that the blocking ball 613 blocks the second through-hole 340.

The link mechanism includes: a link 624, the drive mechanism 640 driving the link 624 to move along the radial direction of the branch 453; and a parallelogram assembly 620, wherein the parallelogram assembly 620 is connected with the plugging mechanism and the connecting rod (624) and deforms along with the movement of the connecting rod 624; when the cartridge 200 is not malfunctioning, the connecting rod 624 and the parallelogram assembly 620 are stationary, and the plugging mechanism is fixed to the branch 453; when the filter element 200 fails, the link (624) moves to deform the parallelogram assembly 620 so that the blocking mechanism falls into the inner purge gas inlet of the venturi 300.

The parallelogram assembly 620 comprises a first rod 621, a second rod 622 and a third rod 623 which are connected in sequence; the first rod 621 has a first rotating part 631 fixed on the lid of the plug 220, a first hinge 632 hinged to the second rod 622, and a sliding groove 633 hinged to the connecting rod 624, wherein the sliding groove 633 is located between the first rotating part 631 and the first hinge 632; the third rod 623 has a free end 634, a second hinge 635 hinged to the second rod 622, and a second rotating portion 636 fixed to the cover of the plug 220, wherein the second rotating portion 636 is located between the free end 634 and the second hinge 635;

a protruding ring 637 is arranged outside the branch tube 453, groove bodies 638 matched with the protruding ring 637 are arranged on the first rod body 621 and the third rod body 623, when the filter element 200 is not in fault, the protruding ring 637 is connected with the groove bodies 638, at this time, a first connection position of the first rod body 621 and the protruding ring 637 is located between the first rotating portion 631 and the first hinge portion 632, and a second connection position of the third rod body 623 and the protruding ring 637 is located between the second rotating portion 636 and the free end 634; the center of the hinge of the first rod 621 and the connecting rod 624 is located at the midpoint of the line connecting the center of the first rotating portion 631 and the center of the first hinge 632, the length of the line connecting the center of the second rotating portion 636 and the center of the second hinge 635 is one fourth of the line connecting the center of the first rotating portion 631 and the center of the first hinge 632, and the line connecting the center of the first connection and the center of the second connection passes through the center of the hinge of the first rod 621 and the connecting rod 624 and the center of the branch tube 453.

The driving mechanism 640 includes: the air cylinder 641 is fixed on the plug 220 cover, and the air cylinder 641 is provided with an air inlet 643 and a through hole 340 for moving the connecting rod 624; the periphery of the piston 642 is connected with the inner wall of the cylinder 641 and can move along the inner wall of the cylinder 641, one end of the connecting rod 624 is connected with the piston 642, and the other end of the connecting rod 624 passes through the through hole 340 and then is connected with the parallelogram assembly 620; and a spring 644, the spring 644 connects the inner wall of the cylinder 641 and the piston 642, one side of the piston 642 is connected with the spring 644, and the other side is connected with the connecting rod 624; and a control air pipe 651, the control air pipe 651 is connected to an air inlet 643 of the air cylinder 641, and when the filter cartridge 200 is out of order, the control air pipe 651 inputs air which pushes the piston 642 to compress the spring 644.

In the second embodiment of the seventh filter, in order to further increase the response speed, the controller and the pressure detection structure shown in fig. 28 are further adopted on the basis of the first embodiment, the control air pipe 651 is provided with the control valve 652, the control valve 652 is an electromagnetic valve, and the controller controls the opening and closing of the electromagnetic valve according to the detection result of the pressure detection structure, so as to block the failed filter cartridge 200 in time.

The seventh filter may be a conventional single-tube filter element 200 with a large diameter, or a bundled filter element 200 formed by bundling a plurality of filter tubes 100 with a small diameter as described above. Meanwhile, the seventh filter may have a plurality of cartridges 200, and when the malfunctioning cartridge 200 is plugged, the operation of the other normal cartridges 200 is not affected.

When the cluster filter element 200 is used, the filter can be used more effectively when the filter tube 100 further has any one of the outer diameter, the service interval, the tube wall thickness, the material, the length and the pore diameter of the filter tube 100.

In the specific implementation of the seven filters, the outer diameter of the filter tube 100, the usage pitch of the filter tube 100, the length of the filter tube 100, the wall thickness of the filter tube 100, the pore diameter of the film-like material 111, and the material are the same as above.

The seven filters described above may also be employed with any of the filter tubes 100 of fig. 2-5 or any of the cartridges 200 shown in fig. 6-13.

The above seven filters can be combined with each other in technical solutions and technical features without conflict.

Fourth, the electric dust collector is improved

The conventional electric dust collector is difficult to modify because the filtering area, the filtering precision and the high-temperature resistance can not meet the requirements. Therefore, the invention provides an electric modified film dust collector which is formed by modifying an electric dust collector.

Fig. 37 is a schematic structural diagram of an embodiment of an electric modified film dust collector modified from an electric dust collector. As shown in fig. 37, the electric modified dust collector includes a filtering structure, and the filtering structure is disposed in an electrode plate placement area 740 of the electric dust collector; the filter structure includes filter core 200 and first bearing structure 420 of one or more interval arrangements, and first bearing structure 420 is connected and will with electrostatic precipitator's casing 417 place the district 740 is separated and is located former air cavity 413 and the net gas chamber 414 of first bearing structure 420 both sides respectively to the electrode plate, former air cavity 413 is connected with electrostatic precipitator's inlet channel 710, net gas chamber 414 is connected with electrostatic precipitator's outlet channel 720, and the clean gas that forms after the gas that waits to filter that comes from inlet channel 710 in former air cavity 413 passes filter core 200 gets into net gas cavity 414 and then discharges from outlet channel 720, and the dust that intercepts through filter core 200 discharges from electrostatic precipitator's ash bucket 416.

The filter element 200 comprises at least two filter tubes 100 arranged at intervals and a fixing component shown in fig. 6, wherein a tube body 110 of the filter tube 100 is formed by rolling a metal or metal-based sheet-like material 111 and sealing a seam 112; the outer diameter of the rolled pipe body 110 is only 20-200 mm, preferably 20-90 mm, more preferably 20-60 mm, and even more preferably 25-50 mm, and the length of the filter pipe 100 is 100-5000 mm, preferably 100-3000 mm, even more preferably 100-2000 mm, and even more preferably 200-1500 mm.

Therefore, the electrode plate placing area 740 is modified by the cluster type filter element 200 formed by clustering the small-diameter filter tubes 100, the requirement of high filtering area can be fully met by adopting shorter filter tubes, and the tube body 110 formed by the sheet-shaped material 111 has excellent high-temperature resistance and high filtering precision. Therefore, the electric film-changing dust collector reasonably utilizes the internal space of the electric dust collector, has high temperature resistance, high filtering precision and high filtering area, and has strong practicability.

In order to make the most efficient use of the space of the electrode plate placement area 740 and to facilitate the installation of the filter structure, the filter structure further comprises a first baffle 750 and a second baffle 760; the lower part of the first baffle 750 is connected with the first supporting structure 420, and the rest directions are connected with the shell of the electric dust collector; the upper part of the second baffle 760 is connected with the first supporting structure 420, and the rest directions are connected with the shell of the electric dust collector; the first supporting structure 420 is horizontally disposed, the original air cavity 413 is located below the first supporting structure 420, and the clean air cavity 414 is located above the first supporting structure 420.

In addition, the invention also provides an electric-to-membrane dust removal system formed by transforming the electric dust removal system, which is used for transforming the electric dust removal system comprising a plurality of electric dust collectors 800.

Fig. 38 is a schematic structural diagram of a first embodiment of an electric-to-membrane dust removal system modified from an electric dust removal system. As shown in fig. 38, the electric membrane-modifying dust-removing system in the parallel structure has two electric membrane-modifying dust collectors 700 and an unmodified electric dust collector 800.

Fig. 39 is a schematic structural diagram of a second embodiment of an electric-to-membrane dust removal system modified from an electric dust removal system. As shown in fig. 39, the electric film-changing dust removal system with a series structure has two electric film-changing dust removers 700 and an unmodified electric dust remover 800, wherein the electric dust remover 800 is arranged in front of the two electric film-changing dust removers 700 connected in series, so that the front electric dust remover 800 can pre-treat the dust-containing gas; the first supporting structures 420 of the two electric modified dust collectors 700 are connected into a whole, the first baffle 750 is connected with the first supporting structure 420 close to the air inlet channel 710, and the second baffle 760 is connected with the first supporting structure 420 far away from the air inlet channel 710; in order to promote the output of the filtered gas, an exhaust channel 770 is added above the electrode plate placing area 740, and the exhaust channel 770 is connected with the gas outlet channel 720.

In the third embodiment of the electric membrane-changing dust removal system modified from the electric dust removal system, three electric membrane-changing dust removal system units shown in fig. 39 are connected in parallel.

When the filter tubes 100 in the filter element 200 further have any one of the service intervals, the tube wall thicknesses, the materials and the pore diameters of the filter tubes 100, the electric membrane-changing dust collector and the electric membrane-changing dust collecting system can achieve better service effects.

In specific implementation, the outer diameter of the filter tube 100, the usage pitch of the filter tube 100, the length of the filter tube 100, the wall thickness of the filter tube 100, the pore diameter of the film-like material 111, and the material are the same as above.

The electric membrane-changing dust remover and the electric membrane-changing dust removing system can also adopt any filter tube 100 in figures 2-5 or any filter element 200 in figures 6-13.

The electric precipitator may also be modified to be the same as any of the filters shown in fig. 14-36.

Dust removing method

The invention provides a dust removal method, aiming at solving the technical problem of small filtering air speed in the existing dust removal method.

In a first embodiment of the dust removing method, a dust removing device is adopted, the dust removing device comprises a filter structure, the filter structure comprises a filter element 200, and the filter element 200 comprises at least two filter tubes 100 arranged at intervals; wherein, the body 110 of the filter tube 100 is formed by rolling a sheet-like material 111 made of metal or metal as a base to shape and seal a seam 112; the outer diameter of the rolled pipe body 110 is only 20-200 mm, preferably 20-90 mm, further preferably 20-60 mm, further preferably 25-50 mm, the distance between two adjacent filter pipes 100 is 5-100 mm, preferably 5-60 mm, further preferably 5-40 mm, further preferably 8-30 mm; the filtering wind speed is 0.8-2 m/min, and the temperature of the gas to be filtered is less than or equal to 800 ℃.

Because the filtering area of the adopted filter element 200 is obviously increased, the filtering wind speed can reach 0.8-2 m/min, and when the sheet-shaped material 111 is adopted, the gas to be filtered with the temperature as high as 800 ℃ can be treated. In specific implementation, the filtering wind speed is 0.8m/min, 1m/min, 1.1m/min, 1.2m/min, 1.4m/min, 1.5m/min, 1.7m/min, 1.9m/min, 2m/min or other values, and the temperature of the gas to be filtered is 100 ℃, 180 ℃, 200 ℃, 260 ℃, 300 ℃, 400 ℃, 500 ℃, 600 ℃, 800 ℃ or other values.

By adjusting the pore size of the flake-like material 111, the dust content of the clean gas obtained by filtration can be 1mg/Nm3, 2mg/Nm3, 4mg/Nm3, 5mg/Nm3, 7mg/Nm3, 8mg/Nm3, 10mg/Nm3 or other values of not more than 20mg/Nm 3.

In the first application scenario, the method is used for treating high-temperature flue gas of a steel-making converter, the temperature of the gas to be filtered is 180-250 ℃, the filtering air speed is 1-2 m/min, and the dust content of the filtered clean gas is less than or equal to 5mg/Nm 3.

In the second application scene, the method is used for treating the non-ferrous metal smelting furnace gas, the temperature of the gas to be filtered is 200-500 ℃, the filtering air speed is 0.8-1.5 m/min, and the dust content of the clean gas obtained by filtering is less than or equal to 10mg/Nm³。

In the third application scene, the method is used for treating molybdenum roasting high-temperature furnace gas, the temperature of the gas to be filtered is 200-400 ℃, the filtering air speed is 0.8-1.5 m/min, and the dust content of the clean gas obtained by filtering is less than or equal to 10mg/Nm³。

In a fourth application scene, the device is used for treating high-temperature arsenic-removing flue gas, the temperature of the gas to be filtered is 300-500 ℃, the filtering air speed is 0.8-1.5 m/min, and the dust content of the clean gas obtained by filtering is less than or equal to 5mg/Nm³。

In a second specific embodiment of the dust removing method, on the basis of the first embodiment, the gas to be filtered is pretreated before filtering, and the pretreatment adopts any of a gravity dust remover, a cyclone dust remover and an electric dust remover.

When the filter tube 100 further has any one of the wall thickness, the length, the material and the pore diameter of the filter tube 100, the dust removing method will achieve better use effect.

The dust removing device may also employ any of the filter tubes 100 of fig. 2-5 or any of the cartridges 200 shown in fig. 6-13.

The dust removing device can be any one of the filters shown in fig. 14-36, and can also be an electric film-changing dust remover or an electric film-changing dust removing system shown in fig. 37-39.

The contents of the present invention have been explained above. Those skilled in the art will be able to implement the invention based on these teachings. All other embodiments, which can be derived by a person skilled in the art from the above description without inventive step, shall fall within the scope of protection of the present invention.

Claims

1. The dust removal method comprises the steps of adopting a dust removal device, wherein the dust removal device comprises a filter structure, the filter structure comprises a filter element (200), and the dust removal method is characterized in that:

the filter element (200) comprises at least two filter tubes (100) arranged at intervals, wherein,

the body (110) of the filter tube (100) is formed by rolling and shaping a metal or sheet-shaped material (111) taking the metal as a matrix and sealing a seam (112); and is

The outer diameter of the rolled pipe body (110) is only 20-200 mm, preferably 20-90 mm, more preferably 20-60 mm, and even more preferably 25-50 mm;

the distance between two adjacent filter tubes (100) is 5-100 mm, preferably 5-60 mm, more preferably 5-40 mm, and even more preferably 8-30 mm;

the filtering wind speed is 0.8-2 m/min, and the temperature of the gas to be filtered is less than or equal to 800 ℃.

2. The dust removing method according to claim 1, characterized in that: the dust removal method also comprises the step of pretreating the gas to be filtered, wherein the pretreatment adopts any of a gravity dust remover, a cyclone dust remover and an electric dust remover.

3. The dust removing method according to claim 1, characterized in that: is used for treating high-temperature flue gas of a steel-making converter, non-ferrous metal smelting furnace gas, molybdenum roasting high-temperature furnace gas or high-temperature arsenic-removing flue gas.

4. A dust removing method according to claim 3, characterized in that: the method is used for treating high-temperature flue gas of a steel-making converter, the temperature of the gas to be filtered is 180-250 ℃, the filtering air speed is 1-2 m/min, and the dust content of the clean gas obtained by filtering is less than or equal to 5mg/Nm³。

5. A dust removing method according to claim 3, characterized in that: the method is used for treating non-ferrous metal smelting furnace gas, the temperature of the gas to be filtered is 200-500 ℃, the filtering air speed is 0.8-1.5 m/min, and the dust content of the clean gas obtained by filtering is less than or equal to 10mg/Nm³。

6. A dust removing method according to claim 3, characterized in that: is used for treating molybdenum roasting high-temperature furnace gas, and the temperature of the gas to be filtered is 200 toThe filtering wind speed is 0.8-1.5 m/min at 400 ℃, and the dust content of the clean gas obtained by filtering is less than or equal to 10mg/Nm³。

7. A dust removing method according to claim 3, characterized in that: the device is used for treating high-temperature arsenic-removing flue gas, the temperature of the gas to be filtered is 300-500 ℃, the filtering air speed is 0.8-1.5 m/min, and the dust content of the clean gas obtained by filtering is less than or equal to 5mg/Nm³。

8. The dust removing method according to claim 1, characterized in that: the filter structure comprises at least two filter elements (200) arranged at intervals.

9. The dust removing method according to claim 1, characterized in that:

the length of the filter tube (100) is 100-5000 mm, preferably 100-3000 mm, more preferably 100-2000 mm, and even more preferably 200-1500 mm;

the thickness of the tube wall of the tube body (110) is 0.2-2.5 mm, preferably 0.2-1.5 mm, and more preferably 0.25-0.8 mm;

the pore diameter of the sheet-like material (111) is 0.3 to 200 μm, preferably 1 to 100 μm, more preferably 1.5 to 50 μm, and still more preferably 2 to 30 μm;

the sheet-like material (111) is a metal fiber felt, a sintered metal porous film or a metal net;

the pipe body (110) is formed by rolling a layer of rectangular sheet-shaped material (111); the seam (112) is parallel to the central axis of the filter tube (100) or in the shape of a spiral.

10. The dust removing method according to claim 1, characterized in that:

the dust removal device also comprises an ash removal structure, wherein the ash removal structure comprises an internal ash removal mechanism for removing ash from the interior of the filter tube (100) and an external ash removal mechanism for removing ash from the exterior of the filter tube (100);

the dust removal device further comprises a pressure detection structure, the pressure detection structure comprises a first pressure detector (481) for detecting the gas pressure before filtration and/or a second pressure detector (482) for detecting the gas pressure after filtration, and the second pressure detector (482) is arranged at the gas outlet of each filter element (200).