Ultralow-emission dust collector for cement production

Abstract

The utility model discloses an ultralow-emission dust collector for cement production, and relates to the technical field of dust removal in cement production. The device comprises a vertical frame, a box body is arranged on the vertical frame, an air inlet pipe and an air outlet pipe are arranged on the two sides of the box body in a communicating mode respectively, a water inlet pipe and a water outlet pipe are arranged at the lower end of the box body in a communicating mode, and a dust removal module is arranged in the box body; the dust removal module comprises supporting rods which are symmetrically arranged, a plurality of filter plates are rotationally arranged at the bottom of each supporting rod at intervals, and a connecting rod assembly is arranged between the gear and the filter plate on the same side; according to the dust collector, the gears are driven to rotate, so that the filter plates on the two sides swing synchronously, the dust collector can conduct wet dust removal through water, dust particles in flue gas are mixed with water and then discharged, meanwhile, part of nitric oxide in the flue gas can be dissolved, combined treatment of dust and nitric oxide is achieved, and the environmental protection performance of the dust collector is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dust removal in cement production, in particular to an ultra-low emission dust collector for cement production. Background Art

[0002] Cement production is an industrial activity with high energy consumption and high pollution. The flue gas from the rotary kiln is the main and most critical source of waste gas emissions, containing a large amount of pollutants such as dust and nitrogen oxides. Dust not only affects the quality and recovery rate of cement products, but also causes serious harm to the atmospheric environment and human health. Nitrogen oxides are an important factor in the formation of environmental problems such as photochemical smog, acid rain and greenhouse effect. Therefore, effective control of dust and nitrogen oxides in the cement production process is an important task for the cement industry to achieve clean production and sustainable development.

[0003] At present, the commonly used dust collectors in the cement industry are bag filters and electrostatic precipitators. Bag filters are devices that use filter bags to filter and capture dust in flue gas. They have the advantages of high dust removal efficiency, ability to filter submicron dust particles, and low emission concentration. However, they also have disadvantages such as easy damage to the filter bags, high cleaning energy consumption, and high operating resistance. Electrostatic precipitators are devices that use high-voltage electric fields to charge, separate, and collect charged dust in flue gas. They have the advantages of large air volume, stable operation, and easy maintenance. However, they also have disadvantages such as poor removal of ultrafine particles, large impact on dust resistivity, and easy fire and explosion.

[0004] Therefore, there is still a need for an improved ultra-low emission dust collector for cement production, which can effectively remove dust and nitrogen oxides in the flue gas while simplifying the system structure and reducing the operating costs to achieve ultra-low emission standards. Utility Model Content

[0005] The main technical problem solved by the utility model is to provide an ultra-low emission dust collector for cement production, so that the dust collector can use water for wet dust removal, and the dust particles in the flue gas are mixed with water and then discharged. At the same time, it can also dissolve part of the nitrogen oxides in the flue gas, thereby realizing the joint control of dust and nitrogen oxides and improving the environmental protection performance of the dust collector.

[0006] In order to solve the above technical problems, a technical solution adopted by the utility model is:

[0007] An ultra-low emission dust collector for cement production, comprising a stand, a box body is arranged on the stand, an air inlet pipe and an air outlet pipe are connected to the two sides of the box body respectively, a water inlet pipe and a water outlet pipe are connected to the lower end of the box body, and a dust removal module is arranged inside the box body;

[0008] The dust removal module comprises symmetrically arranged support rods, the inner upper wall of the box body is provided with a fixing block for fixing the support rods, the same end of the two support rods is respectively provided with gears, the two gears are meshed with each other, the bottom of each support rod is provided with a plurality of filter plates that are rotated at intervals, and a connecting rod assembly is provided between the gears and the filter plates on the same side;

[0009] The dust removal module also includes a driving assembly for driving the gear to rotate, and the filter plates on both sides are synchronously swung by driving the gear to rotate.

[0010] Furthermore, fixed shafts are rotatably arranged at even intervals at the bottom of the support rod, a fixed rod is fixedly arranged at the top of each filter plate, and the lower end of each fixed shaft is fixedly connected to one end of the corresponding fixed rod.

[0011] Furthermore, the connecting rod assembly includes connecting rod one and connecting rod two, one end of connecting rod one is hinged to a position near the edge of the bottom of the gear, and the other end is hinged to one end of connecting rod two, and the fixed rods on one side are hinged to connecting rod two.

[0012] Furthermore, the driving assembly includes an electric push rod, a Z-shaped rod and a limit ring, one end of the Z-shaped rod is fixedly connected to the rotating shaft of one of the gears, and the other end is connected to the limit ring by a bearing, the end of the telescopic rod of the electric push rod is fixedly connected to the limit ring, and the end of the outer shell of the electric push rod is hinged to one of the support rods.

[0013] Furthermore, the stand comprises a base, a support plate and a vertical pole, the support plate is arranged above the base, the upper and lower ends of the vertical pole are respectively connected to the support plate and the base, and a plurality of vertical poles are arranged.

[0014] Furthermore, the box body is fixedly connected to the bottom of the support plate.

[0015] Furthermore, the upper end of the box body is rectangular, and the lower end of the box body is narrowed from top to bottom.

[0016] Furthermore, the air outlet pipe is arranged at a height lower than the air inlet pipe.

[0017] Furthermore, the filter plate is a hollow shell structure, and both sides of the filter plate are provided with evenly arranged filter holes.

[0018] The beneficial technical effects of the utility model are:

[0019] 1. A unique dust removal module is adopted. The electric push rod drives the rotation of the Z-shaped rod through extension and retraction, which in turn drives the rotation of the gear. The filter plate, supported by the fixed shaft and the fixed rod, performs periodic swinging motion along the hinge point of connecting rod 1 and connecting rod 2 as the center of the circle, thus realizing automatic cleaning of the dust on the filter plate, avoiding the blockage and damage of the filter bag caused by dust accumulation, and improving the operating efficiency and life of the dust collector.

[0020] Second, a hollow filter plate is used, and evenly arranged filter holes are set on both sides of the filter plate, so that the flue gas can enter the filter plate from the filter holes and form a lower pressure area inside the filter plate, thereby promoting the dust particles in the flue gas to settle on the filter plate, increasing the filtering area and filtering effect of the dust collector, while also reducing the impact of the flue gas on the filter plate, extending the service life of the filter plate;

[0021] 3. The lower end of the box is tapered, and a structure in which the water outlet pipe and the water inlet pipe are fixedly connected on one side of the lower end of the box enables the dust collector to use water for wet dust removal, and the dust particles in the flue gas are mixed with water and discharged. At the same time, it can also dissolve some nitrogen oxides in the flue gas, thereby realizing the joint control of dust and nitrogen oxides and improving the environmental performance of the dust collector. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 It is a schematic diagram of the overall structure of the utility model (from another perspective);

[0024] Figure 3 It is a schematic diagram of the arrangement of the dust removal module inside the box of the utility model;

[0025] Figure 4 It is a structural schematic diagram of the dust removal module of the utility model;

[0026] Figure 5 yes Figure 4 A magnified view of part A;

[0027] The parts in the accompanying drawings are marked as follows:

[0028] 1. Support plate; 2. Air inlet pipe; 3. Box body; 4. Vertical pole; 5. Base; 6. Water outlet pipe; 61. Water inlet pipe; 7. Air outlet pipe; 8. Fixed block; 9. Electric push rod; 10. Support rod; 11. Connecting rod 2; 12. Filter plate; 13. Filter hole; 14. Fixed shaft; 15. Fixed rod; 16. Connecting rod 1; 17. Gear; 18. Z-shaped rod; 19. Limiting ring. DETAILED DESCRIPTION

[0029] In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the specific implementation methods of the utility model are further described in detail below in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0030] This specific embodiment discloses in detail an ultra-low emission dust collector for cement production, such as Figures 1 to 5 As shown, a box body 3 is arranged on the stand, an air inlet pipe 2 and an air outlet pipe 7 are connected to the two sides of the box body, a water inlet pipe 61 and a water outlet pipe 6 are connected to the lower end of the box body, and a dust removal module is arranged inside the box body;

[0031] The dust removal module includes symmetrically arranged support rods 10, the inner upper wall of the box body is provided with a fixing block 8 for fixing the support rods, the same end of the two support rods is respectively provided with a gear 17, the two gears are meshed with each other, and the bottom of each support rod is provided with a plurality of filter plates 12 for rotation at intervals, and a connecting rod assembly is provided between the gear and the filter plate on the same side;

[0032] The dust removal module also includes a driving assembly for driving the gear to rotate, and the filter plates on both sides are synchronously swung by driving the gear to rotate.

[0033] Preferably, fixed shafts 14 are rotatably arranged at even intervals at the bottom of the support rod, a fixed rod 15 is fixedly arranged at the top of each filter plate, and the lower end of each fixed shaft is fixedly connected to one end of the corresponding fixed rod.

[0034] Preferably, the connecting rod assembly includes connecting rod one 16 and connecting rod two 11, one end of connecting rod one is hinged to a position near the edge of the bottom of the gear, and the other end is hinged to one end of connecting rod two, and the fixed rods on one side are hinged to connecting rod two.

[0035] Preferably, the drive assembly includes an electric push rod 9, a Z-shaped rod 18 and a limit ring 19, one end of the Z-shaped rod is fixedly connected to the rotating shaft of one of the gears, and the other end is connected to the limit ring by a bearing, the telescopic rod end of the electric push rod is fixedly connected to the limit ring, and the outer shell end of the electric push rod is hinged to one of the support rods.

[0036] Preferably, the stand comprises a base 5, a support plate 1 and a vertical pole 4, wherein the support plate is arranged above the base, and the upper and lower ends of the vertical pole are respectively connected to the support plate and the base, and a plurality of vertical poles are arranged.

[0037] Preferably, the box body is fixedly connected to the bottom of the support plate.

[0038] Preferably, the upper end of the box body is rectangular, and the lower end of the box body is narrowed from top to bottom, specifically a conical structure.

[0039] Preferably, the air outlet pipe is arranged at a height lower than the air inlet pipe.

[0040] Preferably, the filter plate is a hollow shell structure, and both sides of the filter plate are provided with evenly arranged filter holes 13.

[0041] Utility model working principle:

[0042] When the flue gas containing dust and nitrogen oxides generated in the cement production process enters the box through the air inlet pipe, the dust particles in the flue gas are affected by inertia and gravity, and some dust particles directly settle on the conical lower side of the box and are discharged through the outlet pipe along with the water flow; the other part of the dust particles are intercepted by the filter plate. The filter holes on the filter plate allow the flue gas to enter the filter plate from both sides of the filter plate, and form a lower pressure area inside the filter plate, thereby promoting the dust particles in the flue gas to settle on the filter plate, increasing the filtration area and filtration effect of the dust collector;

[0043] At the same time, some nitrogen oxides in the flue gas are also dissolved by water, thus achieving the joint control of dust and nitrogen oxides;

[0044] When the electric push rod is powered on, the telescopic rod of the electric push rod drives the limit ring to move back and forth, and the electric push rod swings back and forth as a whole, thereby driving the Z-shaped rod to rotate around the central axis of the gear, and then driving the rotation of the gear. Since the two gears are meshed with each other, the two gears rotate synchronously. When the gears rotate, the hinged action of connecting rod 1 and connecting rod 2 causes the filter plate fixed on the fixed shaft and the fixed rod to perform periodic swinging motion, thereby realizing automatic cleaning of dust on the filter plate and avoiding blockage and damage of the filter bag caused by dust accumulation. The smoke filtered by the filter plate is discharged through the outlet pipe.

[0045] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "front", "back", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0046] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected or set, or detachably connected or set, or integrally connected or set. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as within the protection scope of the present invention.

Claims

1. An ultra-low emission dust collector for cement production, comprising a stand, characterized in that: A box body (3) is arranged on the stand, an air inlet pipe (2) and an air outlet pipe (7) are respectively connected to the two sides of the box body, a water inlet pipe (61) and a water outlet pipe (6) are connected to the lower end of the box body, and a dust removal module is arranged inside the box body; The dust removal module comprises symmetrically arranged support rods (10), the inner upper wall of the box body is provided with a fixing block (8) for fixing the support rods, the same end of the two support rods is respectively provided with a gear (17) for rotation, the two gears are meshed with each other, the bottom of each support rod is provided with a plurality of filter plates (12) for rotation at intervals, and a connecting rod assembly is provided between the gear and the filter plate on the same side; The dust removal module also includes a driving assembly for driving the gear to rotate, and the filter plates on both sides are synchronously swung by driving the gear to rotate.

2. The ultra-low emission dust collector for cement production according to claim 1, characterized in that: The bottom of the support rod is evenly and rotatably provided with fixed shafts (14), the top of each filter plate is fixedly provided with a fixed rod (15), and the lower end of each fixed shaft is fixedly connected to one end of the corresponding fixed rod.

3. The ultra-low emission dust collector for cement production according to claim 2, characterized in that: The connecting rod assembly comprises a connecting rod 1 (16) and a connecting rod 2 (11), one end of the connecting rod 1 is hinged to a position near the edge of the bottom of the gear, and the other end is hinged to one end of the connecting rod 2, and the fixed rods on one side are all hinged to the connecting rod 2.

4. The ultra-low emission dust collector for cement production according to claim 1, characterized in that: The driving assembly comprises an electric push rod (9), a Z-shaped rod (18) and a limiting ring (19), one end of the Z-shaped rod is fixedly connected to the rotating shaft of one of the gears, and the other end of the Z-shaped rod is connected to the limiting ring by a bearing, the end of the telescopic rod of the electric push rod is fixedly connected to the limiting ring, and the end of the outer shell of the electric push rod is hinged to one of the support rods.

5. The ultra-low emission dust collector for cement production according to claim 1, characterized in that: The stand comprises a base (5), a support plate (1) and a vertical pole (4); the support plate is arranged above the base; the upper and lower ends of the vertical pole are respectively connected to the support plate and the base; and a plurality of vertical poles are arranged.

6. The ultra-low emission dust collector for cement production according to claim 5, characterized in that: The box body is fixedly connected to the bottom of the support plate.

7. The ultra-low emission dust collector for cement production according to claim 1, characterized in that: The upper end of the box body is rectangular, and the lower end of the box body is narrowed from top to bottom.

8. The ultra-low emission dust collector for cement production according to claim 1, characterized in that: The air outlet pipe is arranged at a height lower than the air inlet pipe.

9. The ultra-low emission dust collector for cement production according to claim 1, characterized in that: The filter plate is a hollow shell structure, and both sides of the filter plate are provided with filter holes (13) arranged evenly.

Images