Sludge scraper for preventing sewage from dripping for sewage treatment in pickling workshop

Abstract

The invention provides a sludge scraper capable of preventing sewage from dripping for sewage treatment in a pickling workshop, which comprises a sludge scraper body, a sewage receiving disc is arranged right below the sludge scraper body, the sewage receiving disc is parallel to the sludge scraper body and extends along the length direction of the sludge scraper body, and the sewage receiving disc is connected with the sludge scraper body. The sludge scraper has the advantages that the bottom of the sludge scraper body is close to the bottom of the sludge scraper body, sewage dripping from the sludge scraper body can be received by the aid of the sewage receiving disc, leakage sewage of the sludge scraper during operation can be prevented from dripping on the ground of a production workshop, and trouble in cleaning the ground of a production site is avoided; and the cleanliness of a production field environment is improved.

Description

Technical Field

[0001] The invention relates to the technical field of scraper conveyors, in particular to a sludge scraper for preventing sewage from dripping and used for sewage treatment in a pickling workshop. Background Art

[0002] In the manufacturing of monocrystalline and polycrystalline silicon, the secondary recycling of silicon materials is a crucial step in improving resource utilization and reducing production costs. Prior to crystal pulling and ingot casting, the silicon materials undergo a secondary recycling process in a pickling workshop using acidic solutions such as sulfuric acid to remove surface impurities, metal ions, and oxide layers, ensuring quality.

[0003] During the cleaning process, due to the continuity of the cleaning operation and the flow characteristics of the solution, it is inevitable that some sulfuric acid will be discharged along with the cleaned sewage and eventually flow into the sewage treatment plant. When the sewage treatment plant treats the sewage containing sulfuric acid, it will produce sludge containing sulfuric acid. This sludge needs to be cleaned and transported by a sludge scraper to maintain the normal operation of the sewage treatment system. The sludge scraper is a long-distance transmission equipment, and its body is made up of multiple sets of frames. This splicing structure makes the equipment itself have certain sealing risks at the connection point, which is prone to sewage leakage and dripping onto the floor of the production workshop. In addition, the sludge contains sulfuric acid, which is highly corrosive. During the long-term operation of the sludge scraper, the sludge is in continuous contact with the various components of the scraper, especially at the joints and welds of the equipment. These parts are often areas with relatively weak structural strength and poor protection, and are extremely susceptible to corrosion by sulfuric acid. As the degree of corrosion increases, the sealing performance of the scraper joints further decreases, and the leakage becomes more serious. This not only greatly increases the difficulty of cleaning the production site 6S (sorting, straightening, sweeping, sanitation, literacy, and safety), affects the cleanliness and standardization of the production environment, but also causes many inconveniences to equipment maintenance. Summary of the Invention

[0004] In view of this, it is necessary to provide a sludge scraper for pickling workshop sewage treatment to prevent sewage dripping, so as to solve the technical problem of sewage leakage in the prior art, which easily causes difficulty in 6S cleaning at the production site.

[0005] The technical solution adopted by the present invention to solve its technical problem is: A sludge scraper for preventing sewage from dripping in a pickling workshop sewage treatment plant comprises a sludge scraper body. A sewage receiving pan is arranged directly below the sludge scraper body. The sewage receiving pan is parallel to the sludge scraper body and extends along the length direction of the sludge scraper body and is close to the bottom of the sludge scraper body to receive sewage dripping from the sludge scraper body.

[0006] Preferably, the width of the sewage receiving tray is greater than the width of the sludge scraper body.

[0007] Preferably, two rotatable conveying rollers are arranged at the two ends of the sewage receiving tray respectively, the axes of the conveying rollers are perpendicular to the length direction of the sewage receiving tray, a receiving conveyor belt for receiving the sewage dripping from the sludge scraper body is annularly arranged on the two conveying rollers, the upward conveying surface of the receiving conveyor belt is directly below the sludge scraper body, one end of the sewage receiving tray close to the output end of the sludge scraper body is the output end, a driving motor is arranged on the outer side wall of one end of the sewage receiving tray, the driving motor is axially connected with one of the conveying rollers to drive the receiving conveyor belt to annularly rotate in the sewage receiving tray towards the output end of the sewage receiving tray, so as to transfer the sewage received on the receiving conveyor belt to the output end of the sewage receiving tray.

[0008] Preferably, the receiving conveyor belt is made of corrosion-resistant fluororubber, ethylene-propylene rubber, chloroprene rubber or polyester canvas.

[0009] Preferably, raised retaining edges are arranged on the two side edges of the conveying surface of the receiving conveyor belt.

[0010] Preferably, a flow guide groove is arranged at the lower end of the sewage receiving tray close to the output end thereof, and a scraper is arranged above the flow guide groove, the scraper is arranged transversely along the width direction of the sewage receiving tray and is in contact with the downward conveying surface of the receiving conveyor belt, and during the annular rotation of the receiving conveyor belt towards the output end of the sewage receiving tray, the scraper can scrape the sewage on the downward conveying surface of the receiving conveyor belt into the flow guide groove for discharge.

[0011] Preferably, a chute is symmetrically arranged on the side wall of each side of the output end of the sewage receiving tray, the chute is arranged obliquely or vertically, the upper end of the chute is higher than the downward conveying surface of the receiving conveyor belt, a sliding seat matched with the two chutes is arranged at each end of the scraper, the sliding seats at the two ends of the scraper are correspondingly clamped in the two chutes and can freely slide along the chutes, and an elastic traction member is further arranged on the side wall of each side of the output end of the sewage receiving tray, one end of each of the two elastic traction members is fixed on the side wall above the two chutes, and the other end of each of the two elastic traction members is correspondingly fixed on the two sliding seats, so as to pull the two sliding seats towards the upper end of the two chutes, so that the scraper is tightly attached to the downward conveying surface of the receiving conveyor belt.

[0012] Preferably, the elastic traction member is a spring or an elastic rope.

[0013] Preferably, a sludge neutralization and stirring device is also provided at the input end of the sludge scraper body, and the sludge neutralization and stirring device includes a sludge stirring tank with an upper opening for receiving sludge, a discharger and a dosing tank for holding neutralizing substances. The input end of the discharger is arranged on the discharge port of the sludge stirring tank, and the output end of the discharger is connected to the input end of the sludge scraper body. The dosing tank is arranged on one side above the sludge stirring tank, and the lower end of the dosing tank is provided with a discharge port. A feeder is provided at the discharge port of the dosing tank, and the output end of the feeder is facing the sludge stirring tank. The feeder can quantitatively transport the neutralizing substances in the dosing tank into the sludge stirring tank. The sludge stirring tank can stir and neutralize the received sludge and neutralizing substances, and the discharger can transport the sludge after stirring and neutralization in the sludge stirring tank into the sludge scraper body.

[0014] Preferably, the discharger and the feeder are both screw conveyors.

[0015] It can be seen from the above technical solution that the sludge scraper provided in this application is used for wastewater treatment in the pickling workshop to prevent sewage from dripping. A sewage receiving pan is arranged directly below the sludge scraper body. The sewage receiving pan can be used to receive the sewage dripping from the sludge scraper body. The beneficial effect is that the sewage leaked from the sludge scraper during operation can be prevented from dripping onto the floor of the production workshop, thereby avoiding the trouble of cleaning the floor of the production site and improving the cleanliness of the production site environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a side structural schematic diagram of the invention.

[0017] Figure 2 It is a schematic diagram of the three-dimensional structure of the invention.

[0018] Figure 3 This is a schematic diagram of the three-dimensional structure from another angle of the invention.

[0019] Figure 4 for Figure 3 A local enlarged schematic diagram of point A in the middle.

[0020] Figure 5 It is a schematic diagram of the partial structure of the sewage receiving pan.

[0021] Figure 6 It is a schematic diagram of the local structure of the receiving conveyor belt.

[0022] Figure 7 It is a schematic diagram of the connection structure between the scraper and the slide.

[0023] Figure 8 Schematic diagram of the structure of another preferred embodiment.

[0024] In the figure: sludge scraper body 10, bracket 11, sewage receiving plate 20, conveying roller 21, roller 211, receiving conveyor belt 22, driving motor 23, rib 24, guide trough 25, scraper 26, chute 27, slide 28, elastic traction member 29, sludge neutralization and stirring device 30, sludge stirring tank 31, discharger 32, feeding trough 33, feeder 34, stirring paddle 35, stirring motor 36. DETAILED DESCRIPTION

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Please see Figure 1 and Figure 2 The embodiment of the present invention provides a sludge scraper for preventing sewage from dripping for sewage treatment in a pickling workshop, including a sludge scraper body 10. The sludge scraper body 10 is a scraper conveyor, which is composed of a frame, a sprocket, a scraper, a chain, a motor and a reducer. The sludge scraper body 10 is suspended in parallel on the ground of the production workshop through a number of brackets 11. A sewage receiving pan 20 is provided directly below the sludge scraper body 10. The sewage receiving pan 20 is parallel to the sludge scraper body 10 and extends along the length direction of the sludge scraper body 10. The sewage receiving pan 20 is extended, the width of the sewage receiving pan 20 is greater than the width of the sludge scraper body 10, and is close to the bottom of the sludge scraper body 10. The sewage receiving pan 20 is fixed by the bracket 11, and the sewage receiving pan 20 can receive the sewage dripping from the sludge scraper body 10. The sewage receiving pan 20 adopts a trough structure made of stainless steel, which can prevent the sewage leaked from the sludge scraper body 10 during operation from dripping onto the production workshop floor, avoiding the trouble of cleaning the production site floor and improving the cleanliness of the production site environment.

[0027] Please see Figure 2 and Figure 3Furthermore, in a preferred embodiment, in order to facilitate the cleaning of the sewage dripping into the sewage receiving pan 20, freely rotatable conveying rollers 21 are respectively arranged horizontally at both ends of the sewage receiving pan 20, and the axial direction of the conveying roller 21 is perpendicular to the length direction of the sewage receiving pan 20. A plurality of freely rotatable supporting rollers 211 are arranged between the two conveying rollers 21. The supporting rollers 211 have the same axial direction as the conveying rollers 21 and the same height. A receiving conveyor belt 22 for receiving the sewage dripping from the sludge scraper body 10 is annularly sleeved on the two conveying rollers 21. The upward conveying surface of the receiving conveyor belt 22 is directly below the sludge scraper body 10. The width of the receiving conveyor belt 22 is greater than the width of the sludge scraper body 10. The supporting rollers 211 are used to support the upward conveying surface of the receiving conveyor belt 22. The receiving conveyor belt 22 is preferably made of corrosion-resistant fluororubber, EPDM rubber, chloroprene rubber or polyester canvas. The end of the sewage receiving pan 20 close to the output end of the sludge scraper body 10 is the output end, and a driving motor 23 is provided on the outer wall of one end of the sewage receiving pan 20. The driving motor 23 is a reduction motor, and the driving motor 23 is axially connected to one of the conveying rollers 21. The driving motor 23 drives the conveying roller 21 to rotate, so as to drive the receiving conveyor belt 22 to rotate in a circular manner in the sewage receiving pan 20 toward the output end of the sewage receiving pan 20 through the conveying roller 21. The sewage receiving pan 20 is used to receive the sewage dripping from the sludge scraper body 10, and is driven by the driving motor 23 to transfer the sewage received on the receiving conveyor belt 22 to the output end of the sewage receiving pan 20. During the operation of the receiving conveyor belt 22, a person can stand at the output end of the sewage receiving pan 20 and use a cleaning brush or towel to clean the conveying surface of the receiving conveyor belt 22, thereby avoiding the trouble of manual walking back and forth for cleaning.

[0028] Please see Figure 2 and Figure 6 Furthermore, raised side guards 24 are provided on both sides of the conveying surface of the receiving conveyor belt 22. The side guards 24 can stop the received sewage on the conveying surface of the receiving conveyor belt 22 to prevent the sewage from flowing into the gaps on both sides of the conveying surface of the receiving conveyor belt 22.

[0029] Please see Figures 3 to 5Furthermore, the lower end of the sewage receiving pan 20 is open near its output end, and a guide groove 25 is horizontally arranged at the open lower end of the output end of the sewage receiving pan 20. The guide groove 25 is tilted downward, and a scraper 26 is arranged above the guide groove 25. The scraper 26 is arranged horizontally along the width direction of the sewage receiving pan 20 and contacts the downward conveying surface of the receiving conveyor belt 22. During the circular operation of the receiving conveyor belt 22 toward the output end of the sewage receiving pan 20, the scraper 26 can scrape the sewage on the downward conveying surface of the receiving conveyor belt 22 into the guide groove 25 for discharge, thereby avoiding the trouble of manual cleaning of the receiving conveyor belt 22.

[0030] Please see Figure 4 、 Figure 5 and Figure 7 Furthermore, chute 27 is symmetrically provided on the side walls on both sides of the output end of the sewage receiving tray 20. The chute 27 is inclined or vertically provided. The upper end of the chute 27 is higher than the downward conveying surface of the receiving conveyor belt 22. Slide seats 28 matching the two chute 27 are respectively provided at both ends of the scraper 26. The slide seats 28 at both ends of the scraper 26 are correspondingly stuck in the two chute 27 and can slide freely along the chute 27. Elastic traction members 29 are also respectively provided on the side walls on both sides of the output end of the sewage receiving tray 20. The elastic traction members 29 are Spring or elastic rope, one end of the two elastic traction members 29 are respectively fixed on the side walls above the two chutes 27 on both sides of the sewage receiving tray 20, and the other ends of the two elastic traction members 29 are respectively fixed on the two slides 28, pulling the two slides 28 toward the upper ends of the two chutes 27, so that the scraper 26 is in close contact with the downward conveying surface of the receiving conveyor belt 22, and during the operation of the receiving conveyor belt 22, the scraper 26 can adaptively float up and down along the chute 27, and always maintain a close contact with the downward conveying surface of the receiving conveyor belt 22.

[0031] During the installation and use of the sludge scraper body 10, if the output end of the sludge scraper body 10 needs to be tilted upward, the lower end of the sewage receiving pan 20 is the output end, so that the sewage received by the sewage receiving pan 20 or the receiving conveyor belt 22 can be discharged smoothly.

[0032] Please see Figure 8Furthermore, in another preferred embodiment, in order to reduce the corrosion of the sludge on the sludge scraper body 10, a sludge neutralization and stirring device 30 is further provided at the input end of the sludge scraper body 10, and the sludge neutralization and stirring device 30 includes a sludge stirring tank 31 with an upper end opening for receiving sludge, a discharger 32 and a feeding tank 33 for holding a neutralizing substance, a stirring paddle 35 and a stirring motor 36 connected to the stirring paddle 35 by an axis are provided in the sludge stirring tank 31, a discharge port is provided at the lower end of the sludge stirring tank 31, an input end of the discharger 32 is connected to the discharge port at the lower end of the sludge stirring tank 31, an output end of the discharger 32 is connected to the input end of the sludge scraper body 10, and a feeding tank 33 is arranged on one side above the sludge stirring tank 31, and a discharge port is provided at the lower end of the feeding tank 33, and a feeder 34 is provided at the discharge port of the feeding tank 33. The output end of the feeder 34 is facing the sludge stirring tank 31. The discharger 32 and the feeder 34 are both screw conveyors. When in use, the sludge in the sewage treatment plant is conveyed into the sludge stirring tank 31. The feeder 34 quantitatively conveys the neutralizing material in the feeding tank 33 into the sludge stirring tank 31. After the received sludge and neutralizing material are stirred and neutralized by the sludge stirring tank 31, the stirred and neutralized sludge in the sludge stirring tank 31 is conveyed into the sludge scraper body 10 through the discharger 32. The neutralizing substance contained in the batching tank 33 can be slaked lime, sodium carbonate or sodium bicarbonate, etc. After the sludge containing sulfuric acid is neutralized by the neutralizing substance, the corrosion of the sludge on the sludge scraper body 10 can be reduced, thereby improving the service life of the sludge scraper body 10.

[0033] The above disclosure is only a preferred embodiment of the present invention, and it is certainly not intended to limit the scope of the present invention. A person skilled in the art can understand that all or part of the processes of the above embodiment and equivalent changes made in accordance with the claims of the present invention are still within the scope of the invention.

Claims

1. A sludge scraper for preventing sewage from dripping in a pickling workshop, characterized by: It includes a sludge scraper body, and a sewage receiving pan is arranged directly below the sludge scraper body. The sewage receiving pan is parallel to the sludge scraper body, extends along the length direction of the sludge scraper body, and is close to the bottom of the sludge scraper body to receive the sewage dripping from the sludge scraper body.

2. The sludge scraper for preventing sewage from dripping for sewage treatment in a pickling workshop according to claim 1, characterized in that: The width of the sewage receiving pan is greater than the width of the sludge scraper body.

3. The sludge scraper for preventing sewage from dripping for sewage treatment in a pickling workshop according to claim 2, characterized in that: Freely rotatable conveying rollers are respectively arranged horizontally at both ends of the sewage receiving pan, and the axial direction of the conveying rollers is perpendicular to the length direction of the sewage receiving pan. A receiving conveyor belt for receiving sewage dripping from the sludge scraper body is annularly sleeved on the two conveying rollers. The upward conveying surface of the receiving conveyor belt is directly below the sludge scraper body. The end of the sewage receiving pan close to the output end of the sludge scraper body is the output end, and a driving motor is provided on the outer side wall of one end of the sewage receiving pan, and the driving motor is correspondingly connected to one of the conveying rollers by an axis to drive the receiving conveyor belt to rotate in a circular manner in the sewage receiving pan toward the output end of the sewage receiving pan, so as to transfer the sewage received on the receiving conveyor belt to the output end of the sewage receiving pan.

4. The sludge scraper for preventing sewage from dripping for sewage treatment in a pickling workshop according to claim 3, characterized in that: The receiving conveyor belt is made of corrosion-resistant fluororubber, ethylene propylene rubber, chloroprene rubber or polyester canvas.

5. The sludge scraper for preventing sewage from dripping for sewage treatment in a pickling workshop according to claim 4, characterized in that: Raised ribs are provided on both side edges of the conveying surface receiving the conveyor belt.

6. The sludge scraper for preventing sewage from dripping for sewage treatment in a pickling workshop according to claim 5, characterized in that: A guide groove is provided at the lower end of the sewage receiving pan near its output end, and a scraper is provided above the guide groove. The scraper is arranged horizontally along the width direction of the sewage receiving pan and contacts the downward conveying surface of the receiving conveyor belt. During the circular operation of the receiving conveyor belt toward the output end of the sewage receiving pan, the scraper can scrape the sewage on the downward conveying surface of the receiving conveyor belt into the guide groove for discharge.

7. The sludge scraper for preventing sewage from dripping for sewage treatment in a pickling workshop according to claim 6, characterized in that: The lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting of the lifting 8. The sludge scraper for preventing sewage from dripping for sewage treatment in a pickling workshop according to claim 7, characterized in that: The elastic traction member is a spring or an elastic rope.

9. The sludge scraper for preventing sewage from dripping for wastewater treatment in a pickling workshop according to any one of claims 1 to 8, characterized in that: A sludge neutralization and stirring device is also provided at the input end of the sludge scraper body, and the sludge neutralization and stirring device includes a sludge stirring tank with an upper opening for receiving sludge, a discharger and a dosing tank for holding neutralizing substances. The input end of the discharger is arranged on the discharge port of the sludge stirring tank, and the output end of the discharger is connected with the input end of the sludge scraper body. The dosing tank is arranged on one side above the sludge stirring tank, and the lower end of the dosing tank is provided with a discharge port. A feeder is provided at the discharge port of the dosing tank, and the output end of the feeder is facing the sludge stirring tank. The feeder can quantitatively transport the neutralizing substances in the dosing tank into the sludge stirring tank. The sludge stirring tank can stir and neutralize the received sludge and neutralizing substances, and the discharger can transport the sludge after stirring and neutralization in the sludge stirring tank into the sludge scraper body.

10. The sludge scraper for preventing sewage from dripping for sewage treatment in a pickling workshop according to claim 9, characterized in that: The discharger and the feeder are both screw conveyors.

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