Dust removal device for dust-containing waste gas

Abstract

The dust removal device comprises a support frame body, and two rows of dust removal bins, an air inlet pipe, an air outlet pipe and two rows of dust hoppers which are respectively mounted on the support frame body, the two rows of dust removal bins are mutually spaced on the left side and the right side, each row of dust removal bins are arranged front and back, and a plurality of filter bags are orderly arranged and fully distributed in each dust removal bin; the air inlet pipe and the air outlet pipe are respectively of a pipeline structure extending in the length direction, an air inlet is formed in one end of the air inlet pipe, the other end of the air inlet pipe is closed, an air outlet is formed in one end of the air outlet pipe, the other end of the air outlet pipe is closed, the air inlet pipe is communicated with the ash hoppers through air pipes, and the air outlet pipe is communicated with the dust removal bins through air pipes. According to the design, the dust removal device is simple in structure, redundant procedures are simplified, and the manufacturing, installation and maintenance cost of system equipment is effectively reduced.

Description

Technical Field

[0001] The invention relates to the technical field of dust removal, and in particular to a dust removal device for dust-containing exhaust gas which is convenient for dust discharge. Background Art

[0002] Dust-containing industrial waste gas is generated from mechanical processes such as crushing, screening, conveying, and blasting of solid materials, or from processes such as combustion, high-temperature melting, and chemical reactions.

[0003] Currently, there is a dust removal device, which includes a main shell, a conical ash hopper is connected to the bottom, and a transverse partition is installed in the middle of the main shell to divide the internal space into two parts: the upper part is a spray chamber, and the lower part is a cyclone dust removal chamber. A ventilation duct is installed along the axial direction of the center of the transverse partition. The lower end of the duct extends into the cyclone dust removal chamber, and the upper end is connected to an inverted cone-shaped pipe body, and the top is close to the inner wall of the spray chamber. An air outlet is designed in the center of the top of the spray chamber. The middle part of the main shell is also equipped with a tangential air inlet pipe for inputting airflow into the cyclone dust removal chamber. However, the dust removal device has a complicated structure, resulting in high manufacturing, installation and maintenance costs.

[0004] Therefore, it is necessary to design a new dust removal device to solve the above technical problems. Summary of the invention

[0005] The object of the present invention is to provide a dust removal device for dust-containing exhaust gas with a simple structure and simplified redundant processes.

[0006] To achieve the aforementioned objectives, the present invention adopts the following technical scheme: a dust-containing exhaust gas dust removal device, comprising a supporting frame and two rows of dust bins, an air inlet duct, an air outlet duct and two rows of ash hoppers respectively installed on the supporting frame; the two rows of dust bins are spaced apart from each other on the left and right sides, leaving an intermediate space between them, each row of dust bins is arranged front to back, and each of the dust bins is orderly arranged and filled with a number of filter bags; the air inlet duct and the air outlet duct are installed in the intermediate space at an interval up and down, and the air inlet duct and the air outlet duct are respectively present as pipeline structures extending along their length directions, one end of the air inlet duct is provided with an air inlet, and the other end is closed, one end of the air outlet duct is provided with an air outlet, and the other end is closed, the air inlet duct is connected with each ash hopper through an air pipe, the air outlet duct is connected with each dust bin through an air pipe, and the ash hoppers are installed one by one below the corresponding dust bins and pass through up and down.

[0007] As a further improvement, the front end of the air inlet pipe is thicker and the rear end is gradually thinner, forming a tapered contraction structure from front to back.

[0008] As a further improvement, the air outlet pipe is thicker at the rear end and gradually thinner at the front end, forming a tapered contraction structure from the back to the front.

[0009] As a further improvement, the cross section of the air inlet pipe or the air outlet pipe is rectangular or circular.

[0010] As a further improvement, the ash hopper is designed to be in the shape of a quadrangular pyramid, with a larger upper opening and a smaller lower opening, forming a slope.

[0011] As a further improvement, the ash hopper is provided with an electric beater for shaking off the dust remaining on the inner wall of the ash hopper.

[0012] A further improvement includes a back-blowing air duct located above the air outlet duct, one end of the back-blowing air duct is connected to the fan and the other end is closed, the back-blowing air duct is connected to the upper part of the dust removal bin through an air duct, and the wind entering the dust removal bin blows from top to bottom, and a spring device is provided above the dust bag, the spring device includes a baffle, a spring and a pull rod, wherein the baffle is installed on the pull rod and applies downward force to the spring, the pull rod passes through the center of the spring and extends downward, and the dust bag is hung at the lower end thereof. The back-blowing air from the back-blowing air duct can cause the dust bag to swing left and right, thereby causing its length to change, and the spring expands and contracts accordingly to compensate for the length change of the dust bag.

[0013] As a further improvement, a heat-insulating layer is provided on the outer side of the bin wall of the dust removal bin to achieve heat insulation of the bin wall.

[0014] As a further improvement, an insulating layer is provided between the wall of the dust removal bin and the support frame to isolate and form a "cold bridge".

[0015] A further improvement also includes a screw conveyor located below each ash hopper for collecting heavier dust falling from the ash hopper.

[0016] The dust removal device for dust-containing exhaust gas of the present invention has a simple structure, simplifies redundant processes, effectively reduces the manufacturing, installation and maintenance costs of system equipment, improves the work efficiency of the material transfer process, and ensures that workers are protected from equipment damage, while reducing pollution to the working environment and preventing direct or indirect corrosion damage to the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a stereoscopic diagram of the dust removal device for dust-containing exhaust gas of the present invention.

[0018] Figure 2 It is a stereoscopic view of the dust removal device for dust-containing exhaust gas of the present invention from another angle.

[0019] Figure 3 This is an inside view of the dust removal device for dust-containing exhaust gas of the present invention. DETAILED DESCRIPTION

[0020] See also Figures 1 to 3As shown, the present invention discloses a dust removal device 100 for dust-containing exhaust gas, which includes a support frame 10 and two rows of dust bins 20, an air inlet pipe 30, an air outlet pipe 40, a back-blowing air duct 50, two rows of ash hoppers 60 and a screw conveyor 70 respectively installed on the support frame 10.

[0021] The support frame 10 is a steel frame structure, and the two dust removal bins 20 are spaced apart from each other on the left and right sides, leaving an intermediate space 22 between them. Each dust removal bin 20 is arranged front and back. A plurality of filter bags 24 are orderly arranged in each dust removal bin 20, and a spring device is provided above the dust removal bag 24. The spring device includes a baffle, a spring and a pull rod, wherein the baffle is installed on the pull rod and exerts downward force on the spring, and the pull rod passes through the center of the spring and extends downward, and the dust removal bag 24 is suspended at its lower end. The spring is tightened to offset the force brought by the wind, and prevent the dust removal bag 24 from shaking, which causes the gap to be too large and the filtration to be incomplete. The filter bag 24 is an upright cylindrical shape, and the lower end is connected to the corresponding ash hopper 60.

[0022] In order to ensure that the dust-containing waste gas dust removal device 100 of the present invention can adapt to various environmental conditions, the outer side of the bin wall of each dust removal bin 20 is equipped with an insulation layer to achieve insulation of the bin wall and maintain the normal operation of the dust-containing waste gas dust removal device 100 in a constant temperature environment; further, in view of the fact that changes in ambient temperature and ambient humidity may have an adverse effect on the dust-containing waste gas dust removal device 100, for example, under low temperature conditions, the support frame 10 may exchange heat with the dust removal bin 20, causing water vapor condensation, thereby affecting the filtering efficiency of the dust removal bin 20. To this end, an insulating material is provided between the dust removal bin 20 and the support frame 10 to isolate and form a "cold bridge", and a reasonable gap is deliberately reserved to effectively alleviate the interference of environmental factors on the operation of the dust-containing waste gas dust removal device 100 and prevent gas from forming water vapor condensation on the inner wall of the dust removal bin 20.

[0023] The air inlet duct 30 and the air outlet duct 40 are installed in the intermediate space 22, saving the extra cost of pipe insulation and maintenance channels. The air inlet duct 30 is located below the air outlet duct 40, and the two are spaced apart from each other. The air inlet duct 30 is a pipe structure extending along its length, with a thicker front end and a gradually thinner rear end, forming a tapered contraction structure from front to back, so that the air volume allocated to each dust removal bin 20 is almost the same. The front end is provided with an air inlet 32, and the rear end is in a closed state. In addition, the cross-section of the air inlet duct 30 can be rectangular, circular or other geometric shapes. The air inlet duct 30 is connected to each ash hopper 60 through a number of air pipes.

[0024] The air outlet duct 40 is a pipe structure extending along its length, with a thinner front end and a gradually thicker rear end, forming a tapered contraction structure from back to front, so that the air volume allocated to each dust removal bin 20 is close to the same, the front end is closed, and the rear end is equipped with an air outlet 42. In addition, the cross-section of the air outlet duct 40 can be rectangular, circular or other geometric shapes. The air outlet duct 40 is connected to each dust removal bin 20 through a number of air pipes, and the air pipe and the dust removal bin 20 are softly connected by expansion joints, which effectively avoids deformation damage to the hard connection body caused by shaking, prolongs the service life, and saves maintenance costs.

[0025] The back-blowing duct 50 is located above the air outlet duct 40. It is a duct structure extending along its length direction, with a closed front end and an open rear end, and is used to be connected to the fan. The back-blowing duct 50 is connected to the upper part of each dust removal bin 20 through an air pipe. The wind entering the dust removal bin 20 blows from top to bottom. The back-blowing will cause the dust bag 24 to swing left and right, thereby causing its length to change. The spring of the spring device will expand and contract accordingly to compensate for the length change of the dust bag 24.

[0026] The number of ash hoppers 60 and dust removal bins 20 is the same, and they are arranged one by one at the lower end of the dust removal bin 20. Each ash hopper 60 is designed to be a quadrangular pyramid, with a larger upper opening and a smaller lower opening, forming a certain slope, which can ensure that the dust can slide smoothly in the ash hopper 60 to avoid dust accumulation and blockage. Furthermore, each ash hopper 60 is respectively equipped with an electric beater to shake off the dust remaining on the inner wall of the ash hopper 60.

[0027] The screw conveyor 70 is located below each ash hopper 60 and is used to collect the heavier dust dropped from the ash hopper 60 .

[0028] The working principle of the dust removal device 100 for dust-containing exhaust gas of the present invention is as follows: dust enters the dust removal bin 20 through the air inlet pipe 30, heavier dust falls directly into the ash hopper 60, and then falls to the screw conveyor 70 after passing through the manual plug valve and the hammer valve. The lighter dust enters the dust removal bin 20 upward due to the action of the fan, and is then intercepted by the filter bag 24. Finally, the remaining clean air is discharged from the air outlet pipe 40 into the atmosphere.

[0029] The dust removal device 100 for dust-containing exhaust gas of the present invention has a simple structure, simplifies redundant processes, effectively reduces the manufacturing, installation and maintenance costs of system equipment, improves the work efficiency of the material transfer process, and ensures that workers are protected from equipment damage, while reducing pollution to the working environment and preventing direct or indirect corrosion damage to the equipment.

[0030] Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.

Claims

1. A dust removal device for dust-containing exhaust gas, characterized in that: It includes a supporting frame and two rows of dust bins, an air inlet pipe, an air outlet pipe and two rows of ash hoppers respectively installed on the supporting frame; the two rows of dust bins are spaced apart from each other on the left and right sides, leaving an intermediate space between them, each row of dust bins is arranged front to back, and each dust bin is filled with a number of filter bags arranged in an orderly manner; the air inlet pipe and the air outlet pipe are installed in the intermediate space with an interval up and down, and the air inlet pipe and the air outlet pipe are respectively present as pipeline structures extending along their length directions, one end of the air inlet pipe is provided with an air inlet, and the other end is closed, one end of the air outlet pipe is provided with an air outlet, and the other end is closed, the air inlet pipe is connected with each ash hopper through an air pipe, and the air outlet pipe is connected with each dust bin through an air pipe, and the ash hoppers are installed one by one under the corresponding dust bin and pass through from top to bottom.

2. The dust removal device for dust-containing exhaust gas according to claim 1 is characterized in that: The front end of the air inlet pipe is thicker and the rear end is gradually thinner, forming a tapered contraction structure from front to back.

3. The dust removal device for dust-containing exhaust gas according to claim 1 is characterized in that: The air outlet pipe has a thicker rear end and a gradually thinner front end, forming a tapered contraction structure from the back to the front.

4. The dust removal device for dust-containing exhaust gas according to claim 1 is characterized in that: The cross section of the air inlet pipe or the air outlet pipe is rectangular or circular.

5. The dust removal device for dust-containing exhaust gas according to claim 1 is characterized in that: The ash hopper is designed to be in the shape of a quadrangular pyramid, with a larger upper opening and a smaller lower opening, forming a slope.

6. The dust removal device for dust-containing exhaust gas according to claim 1 is characterized in that: The ash hopper is equipped with an electric beater for shaking off the dust remaining on the inner wall of the ash hopper.

7. The dust removal device for dust-containing exhaust gas according to claim 1 is characterized in that: The back-blowing air duct is connected to the fan at one end and is closed at the other end. The back-blowing air duct is connected to the upper part of the dust removal bin through an air pipe, and the wind entering the dust removal bin blows from top to bottom. A spring device is provided above the dust bag, and the spring device includes a baffle, a spring and a pull rod, wherein the baffle is installed on the pull rod and applies downward force to the spring, and the pull rod passes through the center of the spring and extends downward, and the dust bag is suspended at the lower end. The back-blowing air from the back-blowing air duct can cause the dust bag to swing left and right, thereby causing its length to change, and the spring expands and contracts accordingly to compensate for the length change of the dust bag.

8. The dust removal device for dust-containing exhaust gas according to claim 1 is characterized in that: A heat-insulating layer is arranged on the outer side of the bin wall of the dust removal bin to achieve heat insulation of the bin wall.

9. The dust removal device for dust-containing exhaust gas according to claim 1 is characterized in that: An insulation layer is provided between the wall of the dust removal bin and the support frame to isolate and form a "cold bridge".

10. The dust removal device for dust-containing exhaust gas according to claim 1, characterized in that: Also included is a screw conveyor located below each ash hopper for collecting heavier dust falling from the ash hopper.

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