A dust removal filter device for sending tank exhaust and a method of using the same

Abstract

The application discloses a dust removal filter device for exhaust of a sending tank and a use method thereof. The dust removal filter device comprises a filter part and a control part. The filter part is arranged on one side of a tank body of the sending tank. The control part is arranged on one side of the filter part. The filter part is arranged at the front end of the control part, so that the gas in the tank body of the sending tank enters the control part after being filtered by multiple layers of the filter part, and the exhaust operation is completed. Therefore, large-particle impurities are filtered out, the gas flow rate is reduced, the wear is reduced, the service life of the sending tank is effectively prolonged, and the maintenance cost is reduced. In addition, the control part controls the gas to enter the tank body of the sending tank from the filter part, so that the automatic cleaning function of the filter part is realized. Therefore, the need for program or manual intervention is reduced, the operation process is simplified, the cost is reduced, the interruption of the sending tank operation caused by cleaning is avoided, and the work efficiency is further improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of dust removal of a delivery tank, and more particularly relates to a dust removal and filtering device for exhaust gas of a delivery tank and a use method thereof. BACKGROUND

[0002] A delivery tank is a container used for storing and transporting materials, commonly used in industrial production, logistics, and warehousing fields. It is usually used in conjunction with a pneumatic conveying system to transport materials from the delivery tank to other equipment or locations through compressed air or other gases. After the delivery tank completes the delivery of materials to a sand tower or other equipment, it needs to be emptied of dust gas to allow the materials to fall freely into the delivery tank, at which time rapid exhaust is required.

[0003] Currently, ball valves or butterfly valves are commonly used for tank exhaust in the industry. Generally, the device is fixed on the tank, and the valve body is connected to the tank through threads or flanges. For example, a Chinese patent with document number CN202036878U discloses a delivery tank inclined expansion type rapid discharge filter, which includes: the rapid discharge filter is provided on the exhaust port of the delivery tank through a butterfly valve; the exhaust port is provided on the inclined side wall of the upper end of the delivery tank; the rapid discharge filter includes: a small-diameter straight pipe section at the bottom, a horn pipe end connected to the upper end of the small-diameter straight pipe section, a large-diameter straight pipe section connected to the horn pipe end, a steel reinforcement bracket connected to the upper end of the large-diameter straight pipe section, and a filter cloth bag provided on the steel reinforcement bracket. This patent can utilize the horizontal space to speed up the discharge of gas in the delivery tank, but it has the problem of direct exhaust into the delivery tank workshop.

[0004] A Chinese patent with document number CN215287074U discloses a gas conveying delivery tank exhaust pipe structure, which includes a tank body and an exhaust port on one side of the tank body. A filter type exhaust pipe is connected to the exhaust port of the tank body. The tank body is integrally extended outwardly inclined at the position of the exhaust port to form a connection pipe body. The connection pipe body is threadedly connected to the filter type exhaust pipe. The filter type exhaust pipe has a detachable filter screen. When the material is discharged along with the gas to the exhaust port, it is filtered by the filter screen and falls into the tank body along the inner wall of the connection pipe body. This patent effectively solves the problem of direct exhaust into the delivery tank workshop through the filter type exhaust pipe, effectively filters and intercepts material particles in the gas during exhaust, avoids waste of materials, and ensures smoothness of exhaust. However, the above two patents still have the following problems: (1) the filter bag needs to be replaced regularly, and replacement of the filter bag during busy work may cause work to stop, affecting work efficiency; (2) insufficient sealing between the filter bag and the filter chamber may cause unfiltered gas to leak, affecting overall filtering effect; (3) when dealing with abrasive or sticky materials such as sand, the filter bag needs to be replaced frequently, increasing the complexity and cost of operation. SUMMARY

[0005] In order to solve the above problems or improve the prior art, the application provides a dust removal and filtration device for exhaust gas of a delivery tank and a use method thereof. The filter part is additionally arranged at the front end of the control part, so that the control part is connected with the inside of the tank body of the delivery tank through the filter part. The gas in the tank body of the delivery tank passes through the filter part and then enters the control part, so that the exhaust operation is completed. Therefore, the large-particle impurities are filtered, the gas flow rate is reduced, most of the particulate matters are prevented from directly impacting the control part and the related pipeline, the wear is reduced, the service life of the delivery tank is effectively prolonged, and the maintenance cost is reduced. In addition, the control part controls the gas to enter the tank body of the delivery tank from the filter part, so that the automatic cleaning function of the filter part is realized. Therefore, the need for program or manual intervention is reduced, the operation process is simplified, the cost is reduced, the interruption of the operation of the delivery tank caused by cleaning is avoided, and the work efficiency is further improved.

[0006] In order to achieve the above object, in one aspect, the application provides a dust removal and filtration device for exhaust gas of a delivery tank, comprising a filter part and a control part, wherein:

[0007] The filter part comprises a connecting pipe, a shell, a cover plate, a punched plate, a filter chain and a gas inlet. The connecting pipe is arranged on one side of the tank body of the delivery tank and is connected with the inside of the tank body of the delivery tank. The shell is detachably connected with the connecting pipe. The cover plate is arranged on the upper end of the shell through connecting bolts. The punched plate is arranged in the shell. The filter chain is arranged at the bottom end of the cover plate and falls into the shell. The filter chain is arranged above the punched plate. The gas inlet is arranged on the side wall of the shell and is close to the cover plate.

[0008] The control part comprises an exhaust control valve, an exhaust pipe, an air inlet control valve and an air inlet pipe. The exhaust control valve and the air inlet control valve are detachably connected with the gas inlet through a three-way pipe. One end of the exhaust pipe is connected with the exhaust control valve. One end of the air inlet pipe is connected with the air inlet control valve.

[0009] The filter part is additionally arranged at the front end of the control part, so that the gas in the tank body of the delivery tank enters the control part after passing through the filter part, the gas flow rate is reduced, and the wear is reduced. At the same time, the control part controls the gas to enter the tank body of the delivery tank from the filter part, so that the automatic cleaning function of the filter part is realized, and the need for program or manual intervention is reduced.

[0010] Further, the filter part and the control part are designed in a modular and detachable manner.

[0011] Further, the connecting pipe is arranged at the upper end of the tank body of the delivery tank or is arranged on the side wall of the tank body of the delivery tank at a certain inclined angle.

[0012] Further, the shell comprises a connecting section and a filtering section, wherein:

[0013] The connecting section is detachably connected with the connecting pipe; the filtering section is fixedly connected with the connecting section;

[0014] The outer diameter and the inner diameter of the connecting section are both smaller than the outer diameter and the inner diameter of the filtering section, and the wall thickness of the filtering section is greater than the wall thickness of the connecting section;

[0015] An annular connecting platform for mounting the punched plate is arranged at the inner connection between the connecting section and the filtering section;

[0016] An arc chamfer is arranged at the outer surface connection between the connecting section and the filtering section.

[0017] Further, the thickness of the cover plate is not less than the wall thickness of the filtering section; a sealing gasket is arranged between the shell and the cover plate, and a groove is arranged at the upper end of the shell and adapted to the sealing gasket.

[0018] Further, the hole diameter of the punched plate ranges from 0.5 to 1 mm, and the opening rate ranges from 45% to 65%; the hole type of the punched plate comprises a round hole.

[0019] Further, the filtering chains are detachably connected with the cover plate through the groove arranged at the bottom end of the cover plate;

[0020] The filtering chains are at least four;

[0021] The chain links of the filtering chains are at least three;

[0022] At least one annular filtering element is arranged between the filtering chains.

[0023] Further, a metal filter screen is arranged in the air vent.

[0024] Further, the exhaust control valve and the air intake control valve are intelligent valves;

[0025] The exhaust pipe and the air intake pipe are flexible pipes.

[0026] Another aspect of the present application provides a use method of the dust removal and filtering device for exhaust of a sending tank, which is implemented by using the dust removal and filtering device as described above, and comprises the following steps:

[0027] S1: according to the structure of the sending tank body and the exhaust and air intake requirements, selecting a dust removal and filtering device with a proper size and checking whether it works normally;

[0028] S2: connecting the connecting pipe with the sending tank body by welding, and spraying anticorrosive paint at the connection after stable welding;

[0029] S3: Installing the cover plate on the upper end of the housing by connecting bolts, and then connecting the housing to the connecting pipe;

[0030] S4: Connect the vent, exhaust control valve, and intake control valve through a three-way pipe fitting, and connect the exhaust pipe and intake pipe to appropriate positions respectively. After checking the air tightness, the installation of the dust removal and filtering device is completed;

[0031] S5: When the material is being transported, the exhaust control valve is closed and the intake control valve is opened; after the material is transported, the intake control valve is closed and the exhaust control valve is opened to perform the exhaust operation; thereafter, the next operation cycle is entered.

[0032] In general, the above technical solutions conceived by the present invention can achieve the following beneficial effects compared with the prior art:

[0033] 1. The dust removal and filtering device of the present invention, by adding the filter component at the front end of the control component, makes the control component communicate with the interior of the sending tank body through the filter component, so that the gas in the sending tank body enters the control component after passing through the multi-layer filtration in the filter component, completing the exhaust operation, thereby helping to filter out large particles of impurities, reduce the gas flow rate, prevent most of the particles from directly impacting the control component and its related pipelines, reduce wear, effectively extend the service life of the sending tank and reduce maintenance costs; in addition, by controlling the gas from the filter component to enter the sending tank body through the control component, the automatic cleaning function of the filter component can be realized, thereby reducing the need for procedures or manual intervention, simplifying the operation process and reducing costs, avoiding interruptions in the sending tank operation caused by cleaning, and further improving work efficiency.

[0034] 2. The dust removal and filtering device of the present invention enables the vent to have both exhaust and intake functions by detachably connecting the exhaust control valve and the intake control valve to the vent through a three-way pipe fitting. The structure is simple and easy to maintain.

[0035] 3. The dust removal and filtering device of the present invention adopts a modular and detachable design for the filtering component and the control component, so that it can adapt to tanks of different specifications, reduce the production cost of parts and components, and facilitate maintenance and upgrading.

[0036] 4. The dust removal and filtering device of the present invention improves the flexibility of the device and facilitates installation and maintenance by configuring the exhaust pipe and the air inlet pipe as hoses.

[0037] 5. The dust removal and filtering device of the present invention, by increasing the thickness of the cover plate and the wall thickness of the filter section, can adapt to the violent collision between impurities in the filter section and / or between impurities and components for filtering impurities, thereby ensuring the stability and safety of the structure of the dust removal and filtering device.

[0038] 6. The dust removal filter device of the present application, by setting the connecting pipe on the upper end of the sending tank body, or setting it on the side wall of the sending tank body at a certain upward inclination angle, the material that may be discharged into the connecting pipe is returned to the sending tank body by gravity, at the same time, the adaptability to different types of sending tanks and between sending tank trucks is improved, and the practicality of the dust removal filter device is improved. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 It is a structural schematic diagram of the dust removal filter device of the embodiment of the present application;

[0040] Figure 2 It is a structural schematic diagram of the filter component of the embodiment of the present application;

[0041] Figure 3 It is a step flow schematic diagram of the use method of the dust removal filter device of the embodiment of the present application.

[0042] In all the drawings, the same reference signs represent the same technical features, specifically: 1 - sending tank body, 2 - connecting pipe, 3 - shell, 31 - fitting section, 311 - annular connecting platform, 32 - filter section, 4 - cover plate, 41 - sealing gasket, 5 - punched plate, 6 - filter chain, 61 - annular filter piece, 7 - air vent, 8 - exhaust control valve, 9 - exhaust pipe, 10 - air inlet control valve, 11 - air inlet pipe. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical scheme and advantages of the present application more clear and explicit, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not used to limit the present application. In addition, the technical features involved in each embodiment of the present application described below can be combined with each other as long as they do not conflict with each other.

[0044] For example, Figure 1 And Figure 2As shown, one embodiment of the present application provides a dust removal filter device for sending tank exhaust, comprising: a filter component and a control component; the filter component is arranged on one side of the sending tank body 1; the control component is arranged on one side of the filter component; in the actual working process of the sending tank, by adding the filter component in front of the control component, the control component is connected with the inside of the sending tank body 1 through the filter component, so that the gas in the sending tank body 1 enters the control component after being filtered by multiple layers in the filter component, and the exhaust operation is completed, thereby helping to filter out large particles, reducing the gas flow rate, preventing most particles from directly impacting the control component and its related pipelines, reducing wear and tear, effectively prolonging the service life of the sending tank and reducing maintenance costs; in addition, by controlling the gas from the filter component into the sending tank body 1 through the control component, the automatic cleaning function of the filter component can be realized, thereby reducing the need for program or manual intervention, simplifying the operation process and reducing the cost, avoiding the interruption of sending tank operation caused by cleaning, and further improving the work efficiency.

[0045] Specifically, as shown in the drawings, Figure 2 The filter component is arranged on one side of the sending tank body 1 for dust removal and filtration of exhaust gas, and reduces the wear of the control component and related pipelines; the filter component comprises: a connecting pipe 2, a shell 3, a cover plate 4, a punched plate 5, a filter chain 6 and an air vent 7.

[0046] The connecting pipe 2 is arranged on one side of the sending tank body 1 and is in communication with the inside of the sending tank body 1, which is used to ensure the smoothness of exhaust or intake.

[0047] Preferably, the connecting pipe 2 is arranged on the upper end of the sending tank body 1 or is arranged on the side wall of the sending tank body 1 at a certain inclined angle, which is used to return the material that may be discharged into the connecting pipe 2 to the sending tank body 1 by gravity, and at the same time, improves the adaptability to different types of sending tanks and sending tank trucks, and improves the practicality of the dust removal filter device.

[0048] Preferably, the connecting pipe 2 is connected with the sending tank body 1 by welding, and the connection is sprayed with anticorrosive paint, which is used to ensure the stability of the dust removal filter device and the safety of the structure of the sending tank.

[0049] Preferably, the inside of the connecting pipe 2 is provided with internal threads.

[0050] The shell 3 is detachably connected with the connecting pipe 2, which is used to support other components. The shell 3 comprises: an adapter section 31 and a filter section 32.

[0051] The adapter section 31 is detachably connected with the connecting pipe 2.

[0052] Preferably, the adapter section 31 is externally provided with a thread structure matching the connecting pipe 2, for facilitating the maintenance and repair of the filter component and ensuring the air tightness of the connection.

[0053] The filter section 32 is fixedly connected with the adapter section 31, for stabilizing the impurities contained and the components filtering the impurities.

[0054] Preferably, the outer diameter and the inner diameter of the adapter section 31 are both smaller than the outer diameter and the inner diameter of the filter section 32, and the wall thickness of the filter section 32 is greater than the wall thickness of the adapter section 31, for adapting to the violent collision between the impurities and / or between the impurities and the components filtering the impurities in the filter section 32, and ensuring the stability and safety of the structure of the dust removal filter device.

[0055] Preferably, the inner connection between the adapter section 31 and the filter section 32 is provided with an annular connection platform 311 for mounting the punched plate 5.

[0056] Preferably, the outer surface connection between the adapter section 31 and the filter section 32 is provided with a radially chamfered corner, for dispersing local stress and reducing the risk of fatigue failure of the component caused by stress concentration, and at the same time, avoiding the sharp edges from causing harm to the human body during disassembly.

[0057] The cover plate 4 is provided on the upper end of the shell 3 by connecting bolts, for closing the upper end of the shell 3.

[0058] Preferably, the thickness of the cover plate 4 is not less than the wall thickness of the filter section 32, for adapting to the violent collision between the impurities and / or between the impurities and the components filtering the impurities in the filter section 32, and ensuring the stability and safety of the structure of the dust removal filter device.

[0059] Preferably, a sealing gasket 41 is provided between the shell 3 and the cover plate 4, and the upper end of the shell 3 is provided with a groove matching the sealing gasket 41, for further enhancing the air tightness of the filter component.

[0060] The punched plate 5 is provided inside the shell 3.

[0061] Preferably, the punched plate 5 is detachably provided on the upper end of the annular connection platform 311, for dividing the inside of the shell 3 into two parts according to the connection between the adapter section 31 and the filter section 32, for playing the role of the first layer of filter layer, and at the same time, allowing the residual materials to fall back into the inside of the sending tank body 1.

[0062] Preferably, the punched plate 5 has a hole diameter ranging from 0.5 to 1 mm and an opening rate of 45% to 65%, for reducing the gas velocity during exhaust under the condition of meeting the filtering requirement, reducing the impact on the control device and the related pipeline, and reducing the wear rate.

[0063] Preferably, the hole type of the punched plate 5 comprises a round hole.

[0064] The filter chain 6 is arranged at the bottom end of the cover plate 4 and falls into the shell 3 to serve as a second layer of filter.

[0065] Preferably, the filter chain 6 is arranged above the punched plate 5.

[0066] Preferably, the filter chain 6 is detachably connected with the cover plate 4 through a groove arranged at the bottom end of the cover plate 4.

[0067] Preferably, the filter chain 6 is at least four, and the chain ring of the filter chain 6 is at least three to further enhance the effect of filtering impurities.

[0068] Preferably, at least one annular filter 61 is arranged between the filter chains 6 to further enhance the filtering capacity of the filter chains 6.

[0069] The air vent 7 is arranged on the side wall of the shell 3 and close to the cover plate 4 to make the filter chain 6 fully contact with the airflow to be filtered and ensure the smooth exhaust or intake.

[0070] In an optional embodiment, a metal filter screen is arranged in the air vent 7 to serve as a third layer of filter to further improve the filtering effect.

[0071] Specifically, as shown in Figure 1 and Figure 2 The control component is arranged on one side of the filter component to regulate the exhaust or intake of the sending tank, and the control component comprises an exhaust control valve 8, an exhaust pipe 9, an intake control valve 10 and an intake pipe 11.

[0072] The exhaust control valve 8 and the intake control valve 10 are detachably connected with the air vent 7 through a three-way pipe to make the air vent 7 serve as an exhaust and intake, which is simple in structure and easy to maintain.

[0073] Preferably, the exhaust control valve 8 and the intake control valve 10 are intelligent valves to receive signals and realize remote control, thereby simplifying the exhaust and intake operation.

[0074] One end of the exhaust pipe 9 is connected with the exhaust control valve 8, and the other end thereof is connected with other devices to further process the exhaust gas and reduce pollution.

[0075] One end of the intake pipe 11 is connected with the intake control valve 10, and the other end thereof is connected with a compressed air providing device to ensure the stability and safety of air supply.

[0076] Preferably, the filter component and the control component adopt a modular detachable design, which reduces the production cost of parts, and facilitates maintenance and upgrading.

[0077] Preferably, the exhaust pipe 9 and the intake pipe 11 are flexible pipes, which improve the flexibility of the device, and facilitate installation and maintenance.

[0078] As shown in the drawings, another embodiment of the present application provides a method for using a dust removal filter device for sending tank exhaust, which comprises the following steps: Figure 3

[0079] S1: According to the structure of the sending tank body 1 and the exhaust and intake requirements, select a dust removal filter device with appropriate size, and check whether it is working properly;

[0080] S2: Connect the connecting pipe 2 with the sending tank body 1 by welding, and then spray anticorrosive paint at the connection after the welding is stable;

[0081] S3: Set the cover plate 4 on the upper end of the shell 3 by connecting bolts, and then connect the shell 3 with the connecting pipe 2;

[0082] S4: Connect the air vent 7, the exhaust control valve 8 and the intake control valve 10 by a three-way pipe fitting, and connect the exhaust pipe 9 and the intake pipe 11 to appropriate positions respectively, and check the air tightness, then the installation of the dust removal filter device is completed;

[0083] S5: During the material conveying, close the exhaust control valve 8 and open the intake control valve 10; after the material conveying is completed, close the intake control valve 10 and open the exhaust control valve 8 to perform the exhaust operation; then, enter the next operation cycle.

[0084] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between the components in a certain specific posture (as shown in the drawings), if the specific posture changes, the directional indications will also change accordingly.

[0085] ​In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist, nor within the protection scope required by the present application.

[0086] In this patent, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes the elements inherent to such process, method, article or device. Without more limitations, the elements defined by the statement "include" do not exclude the existence of other same elements in the process, method, article or device including the elements.

[0087] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; those skilled in the art can easily understand that the above description is only the preferred embodiment of the present application, and is not used to limit the present application, any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A dust removal and filtering device for exhaust gas from a sending tank, characterized in that: include: The filter component and the control component adopt a modular detachable design, wherein: The filter component comprises: a connecting pipe (2), a shell (3), a cover plate (4), a punching plate (5), a filter chain (6) and a vent (7); the connecting pipe (2) is arranged on one side of the sending tank body (1) and is communicated with the interior of the sending tank body (1); the shell (3) is detachably connected to the connecting pipe (2); the cover plate (4) is arranged on the upper end of the shell (3) through a connecting bolt; the punching plate (5) is arranged inside the shell (3); the filter chain (6) is arranged at the bottom end of the cover plate (4) and falls into the interior of the shell (3); the filter chain (6) is arranged above the punching plate (5); the filter chains (6) are at least four; the chain links of the filter chain (6) are at least three; at least one annular filter element (61) is arranged between a plurality of the filter chains (6); the vent (7) is arranged on the side wall of the shell (3) and close to the cover plate (4); The control component comprises: an exhaust control valve (8), an exhaust pipe (9), an intake control valve (10) and an intake pipe (11); the exhaust control valve (8) and the intake control valve (10) are detachably connected to the vent (7) via a three-way pipe; one end of the exhaust pipe (9) is connected to the exhaust control valve (8); one end of the intake pipe (11) is connected to the intake control valve (10); By adding the filter component at the front end of the control component, the gas in the sending tank body (1) enters the control component after passing through the filter component, thereby reducing the gas flow rate and alleviating wear; at the same time, the control component controls the gas to enter the sending tank body (1) from the filter component, thereby realizing an automatic cleaning function of the filter component and reducing the need for procedural or manual intervention.

2. The dust removal and filtering device according to claim 1, characterized in that: The connecting pipe (2) is arranged at the upper end of the sending tank body (1), or is arranged at a certain upward tilt angle on the side wall of the sending tank body (1).

3. The dust removal and filtering device according to claim 1 or 2, characterized in that: The housing (3) comprises: a matching section (31) and a filtering section (32), wherein: The matching section (31) is detachably connected to the connecting pipe (2); the filtering section (32) is fixedly connected to the matching section (31); The outer diameter of the matching section (31) is smaller than the outer diameter of the filtering section (32), and the inner diameter thereof is also smaller than the inner diameter of the filtering section (32), and the wall thickness of the filtering section (32) is greater than the wall thickness of the matching section (31); An annular connecting platform (311) for mounting the punching plate (5) is provided at the internal connection between the matching section (31) and the filtering section (32); A radian chamfer is provided at the connection point between the outer surface of the matching section (31) and the filtering section (32).

4. The dust removal and filtering device according to claim 3, characterized in that: The thickness of the cover plate (4) is not less than the wall thickness of the filter section (32); a sealing gasket (41) is provided between the shell (3) and the cover plate (4), and a groove adapted to the sealing gasket (41) is provided at the upper end of the shell (3).

5. The dust removal and filtering device according to claim 1 or 2, characterized in that: The aperture range of the punching plate (5) is 0.5-1 mm, and the opening rate is 45%-65%; the hole type of the punching plate (5) includes circular holes.

6. The dust removal and filtering device according to claim 1 or 2, characterized in that: The filter chain (6) is detachably connected to the cover plate (4) via a groove provided at the bottom end of the cover plate (4).

7. The dust removal and filtering device according to claim 1 or 2, characterized in that: A metal filter is provided in the vent (7).

8. The dust removal and filtering device according to claim 1 or 2, characterized in that: The exhaust control valve (8) and the intake control valve (10) are intelligent valves; The exhaust pipe (9) and the air inlet pipe (11) are flexible pipes.

9. A method for using a dust removal and filtering device for exhaust gas from a sending tank, which is implemented by using the dust removal and filtering device according to any one of claims 1 to 8, characterized in that: The steps include: S1: According to the structure of the sending tank body (1) and the exhaust and intake requirements, select the dust removal and filtering device of appropriate size and check whether it is working properly; S2: Connect the connecting pipe (2) to the sending tank body (1) by welding. After the welding is stable, spray anti-corrosion paint on the connection; S3: The cover plate (4) is arranged on the upper end of the shell (3) by means of connecting bolts, and then the shell (3) is connected to the connecting pipe (2); S4: Connect the vent (7), the exhaust control valve (8) and the intake control valve (10) through a three-way pipe fitting, and connect the exhaust pipe (9) and the intake pipe (11) to appropriate positions respectively. After checking the air tightness, the installation of the dust removal and filtering device is completed; S5: When the material is being transported, the exhaust control valve (8) is closed and the intake control valve (10) is opened; after the material is transported, the intake control valve (10) is closed and the exhaust control valve (8) is opened to perform exhaust operation; thereafter, the next operation cycle is entered.

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