Sludge bin discharge port iron slag prevention device
By designing an iron slag-proof device for the unloading port of the sludge silo including a stop plate, a speed reduction plate, a magnetic plate and an air dryer, the problem of impurities entering the screw pump in the sludge silo is solved, and effective interception is achieved and fix impurities, protecting the equipment.
Patent Information
- Application Number
- CN202421178521.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-28
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-05-28
AI Technical Summary
Hard impurities such as bolts, nuts, etc. are mixed into the sludge silo. After entering the screw pump, it will damage the stator rotor and cause major losses. The existing technology has not effectively solved this problem.
A sludge anti-slag device for unloading the sludge silo is designed, including a barrier plate, a speed reduction plate, a magnetic plate, an air ventilation plate and an air dryer. The sludge is turned into small pieces through the barrier plate, a speed reduction plate and a magnetic Under the joint action of the plate, the impurities stay in the speed reduction plate, and the air dryer fixes the impurities with the sludge, thereby preventing the impurities from entering the screw pump.
Effectively intercept and fix impurities to prevent them from entering the screw pump, protect the rotor of the screw pump, reduce equipment damage and operation costs, and solve the problem of impurities in the sludge silo to damage the screw pump.
Smart Images
Figure CN222475045U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of sludge drying and relates to an iron slag prevention device for a sludge silo discharge port. Background Art
[0002] At present, the sludge drying industry usually uses pipelines powered by screw pumps to transport raw materials, that is, sludge with a moisture content of 75% to 95%. A silo needs to be built above the inlet of the screw pump for buffering and feeding. However, the source of materials in the silo is complicated. Some are unloaded by vehicles, and some are dropped into the silo after being processed by the front-end dehydrator. Impurities such as bolts, nuts, and equipment fragments are inevitably mixed in during the transportation process. These hard impurities will directly damage the stator and rotor of the screw pump after entering the screw pump, causing significant losses. There is currently no corresponding solution to this problem in the industry. Utility Model Content
[0003] The utility model aims to solve the above-mentioned technical problems existing in the discharge port of the sludge silo and provide an anti-iron slag device for the discharge port of the sludge silo.
[0004] The technical solution adopted by the utility model to achieve the above-mentioned purpose is: a sludge silo discharge port anti-iron slag device, characterized in that it includes a material baffle plate, a speed reduction plate, a magnetic plate, an air-passing plate, and an air-drying fan; the material baffle plate is composed of multiple vertical plates, and has flange openings at the upper and lower ends, the upper flange is connected to the silo discharge port, and the lower flange is connected to the screw pump inlet, the speed reduction plate is connected to the lower end of the material baffle plate and has a certain inclination angle, the magnetic plate is connected to the lower end of the speed reduction plate, and the magnetic plate outlet is located directly below the silo discharge port; the outer side of the magnetic plate is connected to the air-passing plate, one end of the air-passing plate is connected to the air-drying fan, and the other end serves as an air outlet.
[0005] The distance between the vertical plates of the baffle plate is 100-150 mm, the thickness is 4-6 mm, and the number of plates is distributed over the inlet of the screw pump below. The baffle plate and the deceleration plate are both wrapped by the outer shell, and the deceleration plate is composed of multiple plates.
[0006] The angle between the speed reducer and the baffle plate is related to the moisture content of the material. When the moisture content of the material is 75%, the angle is 55°, and the deviation should not exceed 2°. For every 2% increase in moisture content, the angle decreases by 1°, up to a moisture content of 95%, corresponding to an angle of 45°.
[0007] The air volume of the air drying fan is 3m 3 / h~10m 3 / h, wind pressure 300pa~500pa.
[0008] The magnetic plate is 6 mm thick and includes a 3 mm thick magnet and 1.5 mm thick stainless steel plates on both sides. The stainless steel plates are fully welded to wrap the magnet to prevent water or sludge from entering.
[0009] The device is used in a sludge silo with a moisture content of 75% to 95% and fluidity.
[0010] The utility model utilizes the sludge blocks cut by the baffle plate to divide the sludge into small pieces and enter the deceleration plate. Under the joint action of the deceleration plate and the magnetic plate, the bolts, nuts and other waste materials in the sludge are retained in the deceleration plate. Under the action of the air drying fan, the waste materials and the surrounding sludge are fixed in the deceleration plate. This prevents the waste materials from falling into the screw pump below and damaging the stator and rotor of the screw pump. The utility model is characterized by ingenious structural design, simple and easy processing, high interception rate, easy maintenance, and can effectively solve the problem. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model.
[0012] Figure 2 It is a schematic diagram of the structure of the utility model from top view.
[0013] Figure 3 It is a schematic diagram of the installation of the utility model.
[0014] Figure 4 yes Figure 3 Right view.
[0015] In the figure: 1- material baffle, 1-1 upper flange, 1-2 housing, 2- deceleration plate, 3- magnetic plate, 3-1 lower flange, 4- air plate, 5- air drying fan, A silo discharge port, B the utility model, C screw pump. DETAILED DESCRIPTION
[0016] The utility model is described in detail below in conjunction with the accompanying drawings. Example
[0017] like Figure 1-Figure 4 As shown, a device for preventing iron slag at the discharge port of a sludge silo comprises a baffle plate 1, a speed reduction plate 2, a magnetic plate 3, an air-passing plate 4 and an air-drying fan 5; the baffle plate 1 is composed of a plurality of vertical plates, with flange openings at the upper and lower ends, the upper flange 1-1 being connected to the silo discharge port A, the lower flange 3-1 being connected to the screw pump inlet, the speed reduction plate 2 being connected to the lower end of the baffle plate 1 and having a certain inclination angle, the magnetic plate 3 being connected to the lower end of the speed reduction plate 2, and the outlet of the magnetic plate 3 being located directly below the silo discharge port A; the outer side of the magnetic plate 3 is connected to the air-passing plate 4, one end of the air-passing plate 4 is connected to the air-drying fan 5, and the other end serves as an air outlet.
[0018] The distance between the vertical plates of the baffle plate 1 is 100-150 mm, the thickness is 4-6 mm, and the number of baffle plates 1 covers the inlet of the screw pump below. The baffle plate 1 and the deceleration plate 2 are both wrapped by the outer shell 1-2, and the deceleration plate 2 is composed of multiple plates.
[0019] The angle between the deceleration plate 2 and the baffle plate 1 is related to the moisture content of the material. When the moisture content of the material is 75%, the angle is 55°, and the deviation should not exceed 2°. For every 2% increase in moisture content, the angle decreases by 1°, up to a moisture content of 95%, corresponding to an angle of 45°.
[0020] The air volume of the air drying fan 5 is 3m 3 / h~10m 3 / h, wind pressure 300pa~500pa.
[0021] The magnetic plate 3 is 6 mm thick and includes a 3 mm thick magnet and 1.5 mm thick stainless steel plates on both sides. The stainless steel plates are fully welded to wrap the magnet to prevent water or sludge from entering.
[0022] The working principle of the utility model is:
[0023] When impurities such as bolts pass through the deceleration plate, the angle increases, the resistance increases, and the resistance encountered by sludge and hard impurities at large angles is different, resulting in fast sludge flow, slow impurity flow and rolling sinking, that is, close to the lower plate, and the impurities will tend to be parallel in shape during rolling, that is, the part with a large cross-sectional area is parallel to the flow direction, and the part with a small cross-sectional area is perpendicular to the flow direction, resulting in increased suction of impurities at the magnetic plate, further deceleration on the magnetic plate, and the fan blows dry air through the magnetic plate, so that the moisture content of the sludge around the impurities is reduced, forming a mud mass, blocking the area, and finally blocking the channel containing impurities and retaining the impurities. The amount of mud discharged by the screw pump below or the operating level of the sludge silo above can be used to determine whether the device is blocked by impurities, so as to arrange cleaning and maintenance work.
[0024] The utility model is applied in a 10 cubic meter conical silo, the spacing between the baffle plates 1 is 100 mm, the thickness is 4 mm, the angle between the speed reducer 2 and the baffle plate 1 is 50°, the air drying fan is 3 m³ / h, the wind pressure is 400 Pa, and the 6 mm magnetic plate 3 is used. 10 cubic meters of sludge are mixed into 4 nuts, and the discharge rate is controlled to be 0.5 m³ / h. Finally, the nuts stay on the speed reducer and the magnetic plate and do not fall into the screw pump, meeting the design requirements.
Claims
1. A device for preventing iron slag at a sludge silo discharge port, characterized in that: The invention comprises a baffle plate (1), a speed reduction plate (2), a magnetic plate (3), an air-passing plate (4), and an air-drying fan (5); the baffle plate (1) is composed of a plurality of vertical plates, and has flange openings at the upper and lower ends; the upper flange (1-1) is connected to a silo discharge port (A), and the lower flange (3-1) is connected to an inlet of a screw pump; the speed reduction plate (2) is connected to the lower end of the baffle plate (1) and has a certain inclination angle; the magnetic plate (3) is connected to the lower end of the speed reduction plate (2), and the outlet of the magnetic plate (3) is located directly below the silo discharge port (A); the outer side of the magnetic plate (3) is connected to the air-passing plate (4); one end of the air-passing plate (4) is connected to the air-drying fan (5), and the other end serves as an air outlet.
2. The iron slag prevention device for a sludge silo discharge port according to claim 1, characterized in that: The baffle plate (1) has a spacing of 100-150 mm between each vertical plate and a thickness of 4-6 mm. The baffle plate (1) is distributed over the inlet of the screw pump below. The baffle plate (1) and the deceleration plate (2) are both wrapped by the outer shell (1-2). The deceleration plate (2) is composed of multiple plates.
3. The iron slag prevention device for a sludge silo discharge port according to claim 2 is characterized in that: The angle between the deceleration plate (2) and the baffle plate (1) is related to the moisture content of the material. When the moisture content of the material is 75%, the angle is 55°, with a deviation of no more than 2°. For every 2% increase in moisture content, the angle decreases by 1°, up to a moisture content of 95%, corresponding to an angle of 45°.
4. The iron slag prevention device for a sludge silo discharge port according to claim 1, characterized in that: The air volume of the air drying fan (5) is 3m 3 / h~10m 3 / h, wind pressure 300pa~500pa.
5. The iron slag prevention device for a sludge silo discharge port according to claim 1, characterized in that: The magnetic plate (3) has a thickness of 6 mm and comprises a 3 mm thick magnet and 1.5 mm thick stainless steel plates on both sides, wherein the stainless steel plates are fully welded to wrap around the magnet.
6. The iron slag prevention device for a sludge silo discharge port according to any one of claims 1 to 5, characterized in that: The device is used in a sludge silo with a moisture content of 75% to 95% and fluidity.