A screening device for sludge treatment
By designing a sludge treatment device with a screening mechanism, a striking mechanism, and an anti-clogging mechanism, the problem of low screening efficiency caused by sludge stickiness is solved, and high-efficiency sludge screening is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG WOYE YIFANG BIOTECHNOLOGY CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-06-02
AI Technical Summary
In existing sludge treatment devices, the high viscosity of sludge leads to low screening efficiency, and sludge easily adheres to the inner wall of the rotating screen, affecting the screening effect.
A sludge treatment screening device was designed, which includes a screening mechanism, a knocking mechanism, and an anti-clogging mechanism. The screening cylinder is driven to rotate by a motor, and the sludge is transported by a spiral plate. The knocking mechanism increases the vibration of the screening cylinder, and the brush plate and comb teeth of the anti-clogging mechanism clean the screen holes to prevent clogging.
It effectively avoids sludge stagnation and accumulation caused by sludge stickiness, improves sludge screening efficiency, prevents screen hole clogging, and significantly enhances sludge screening effect.
Smart Images
Figure CN224308906U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sludge treatment technology, specifically to a screening device for sludge treatment. Background Technology
[0002] After being treated by high-temperature and high-pressure hot water hydrolysis, the sludge can be used as the base material for nutrient soil after dewatering and drying. In order to ensure that the soil particles of the nutrient soil are uniform, the treated sludge needs to be screened.
[0003] In existing equipment, when the feeding becomes unstable, a large amount of sludge suddenly floods into the screen hopper, and this large amount of sludge cannot be completely screened.
[0004] As disclosed in CN115193686B, a sludge treatment screening device is installed on a drive shaft via a mounting sleeve and a first elastic element. When there is too much material inside the sludge, the tilt angle of the sludge can be automatically adjusted, increasing the residence time of the sludge and thus enabling thorough screening. A striking mechanism is installed to strike the surface of the sludge, reducing clogging and improving screening efficiency. Simultaneously, a reduced tilt angle increases the residence time of the sludge, further enhancing screening. More material inside the sludge increases the descent height of the sludge, the sliding distance of the slide bar, the stretching degree of the third elastic element, and the striking intensity of the striking rod, all contributing to a more effective striking effect. These factors work together to further improve the screening efficiency.
[0005] However, during use, the sludge has high viscosity and will adhere to the inner wall of the rotating screen, thus affecting the sludge screening efficiency.
[0006] Therefore, we urgently need to provide a screening device for sludge treatment. Utility Model Content
[0007] The purpose of this utility model is to provide a sludge treatment screening device to solve the problem mentioned in the background art that the sludge has high viscosity and will adhere to the inner wall of the rotating screen during use, thereby affecting the sludge screening efficiency.
[0008] To achieve the above objectives, the present invention provides the following technical solution: a sludge treatment screening device, comprising a shell and a support frame, wherein the support frame is fixedly installed on the front and rear sides of the shell, and screening devices are provided inside and outside the shell, wherein the screening device comprises a screening mechanism, a striking mechanism and an anti-clogging mechanism.
[0009] The screening mechanism is located inside the housing, the striking mechanism is located on the front of the housing, and the anti-blocking mechanism is located inside the housing.
[0010] The screening mechanism includes a support roller, a screening cylinder, a guide rail, a motor, a drive shaft, a pinion gear, a large gear, a spiral plate, a discharge port, and a feed box. The support roller is fixedly installed on the left and right sides of the inner wall of the housing. The screening cylinder is installed inside the housing. The guide rail is fixedly installed on the left and right ends of the outer side of the screening cylinder. The motor is fixedly installed on the top left side of the support frame. The drive shaft is fixedly installed at the output end of the motor. The pinion gear is fixedly installed on the outer side of the left end of the drive shaft. The large gear is fixedly installed on the left side of the outer surface of the screening cylinder. The spiral plate is fixedly installed inside the spiral plate. The discharge port is fixedly installed at the bottom of the housing. The feed box is fixedly installed on the left side of the support frame.
[0011] Preferably, there are multiple support rollers, which are distributed at equal angles on the inner wall of the housing. The guide rail has a guide groove inside, and the support rollers are rotatably connected to the inner wall of the guide groove. The support rollers and the guide rail cooperate to support and guide the screening cylinder, so that the screening cylinder rotates along the support rollers.
[0012] Preferably, the lower end of the feed box is located inside the screening cylinder. The small gear and the large gear mesh with each other. After the sludge is poured into the feed box, the sludge enters the screening cylinder along the feed box. The starting motor drives the drive shaft and the small gear to rotate. The small gear meshes with the large gear, causing the screening cylinder to rotate. Combined with the axial force generated by the spiral plate, the sludge is conveyed from left to right, avoiding stagnation and accumulation caused by the high viscosity of the sludge.
[0013] Preferably, the striking mechanism includes a cam, a spring, and a striking block. The cam is fixedly installed on the outside of the drive shaft, one end of the spring is fixedly installed on the inner wall of the cam, and the striking block is fixedly installed on the other end of the spring.
[0014] Preferably, the cam has an internal mounting groove, the spring and the striking block are installed inside the mounting groove, and the striking block can slide along the mounting groove. The outer wall of the housing has a through groove on the left side, and the striking block passes through the through groove and can collide with the screening cylinder. By striking the screening cylinder with the striking block, the screening cylinder vibrates, thereby improving the screening efficiency of the screening cylinder for sludge.
[0015] Preferably, the anti-clogging mechanism includes a brush plate, bolts, a mounting plate, and comb teeth. The brush plate is installed inside the housing, the bolts are threaded to the left and right ends inside the brush plate, the mounting plate is fixedly installed on one side of the two adjacent guide rails, and the comb teeth are fixedly installed on the outside of the mounting plate.
[0016] Preferably, the outer surface of the housing has a slot, the brush plate is installed inside the slot, and screw holes are provided at both ends of the slot. The brush plate is installed by bolts passing through both ends of the brush plate and connecting to the screw holes. Alternatively, the brush plate can be disassembled.
[0017] Preferably, the comb teeth have grooves on their surface, and the width of the grooves is greater than the diameter of the brush on the brush plate. When the screening cylinder drives the comb teeth to rotate, the comb teeth collide with the brush plate, which can knock off the sludge adhering to the brush plate. At the same time, the brush passes through the grooves and further scrapes off the sludge on the brush. Under the action of centrifugal force, the sludge in the grooves is thrown out, thereby cleaning the brush plate and the comb teeth, thus improving the cleaning effect of the brush plate on the screening cylinder and improving the sludge screening efficiency.
[0018] Compared with the prior art, the beneficial effects of this utility model are:
[0019] 1. This sludge treatment screening device, by setting up a screening mechanism, drives the drive shaft and pinion to rotate by starting the motor. The pinion meshes with the large gear, causing the screening cylinder to rotate. Combined with the axial force generated by the spiral plate, the sludge is conveyed from left to right, avoiding stagnation and accumulation caused by the high viscosity of the sludge, and improving the sludge screening efficiency.
[0020] 2. This sludge treatment screening device, by setting up an anti-clogging mechanism, cleans the screen holes of the screening cylinder with a brush plate, thereby preventing sludge from clogging the screen holes and further improving the sludge screening efficiency. At the same time, the screening cylinder drives the comb teeth to rotate, at which time the comb teeth will collide with the brush plate, knocking off the sludge adhering to the brush plate. Meanwhile, the brush passes through the tooth groove, further scraping off the sludge on the brush. Under the action of centrifugal force, the sludge in the tooth groove is thrown out, realizing the cleaning of the brush plate and comb teeth, thereby improving the cleaning effect of the brush plate on the screening cylinder, and thus improving the sludge screening efficiency. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0022] Figure 2 This is a schematic diagram of the overall structure of this utility model;
[0023] Figure 3 This is a cross-sectional view of the internal structure of the shell of this utility model;
[0024] Figure 4 This is an exploded view of the connection between the shell and the brush plate of this utility model;
[0025] Figure 5 This is an exploded view of the striking mechanism of this utility model.
[0026] In the diagram: 1. Shell; 2. Support frame; 301. Support roller; 302. Screening cylinder; 303. Guide rail; 304. Motor; 305. Drive shaft; 306. Pinion; 307. Gear; 308. Spiral plate; 309. Discharge port; 310. Feed box; 401. Cam; 402. Spring; 403. Striking block; 501. Brush plate; 502. Bolt; 503. Mounting plate; 504. Comb teeth. Detailed Implementation
[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0028] Example 1:
[0029] Due to the high viscosity of sludge, it tends to adhere to the inner wall of the rotary screen, thus affecting the sludge screening efficiency. Please refer to [link to relevant documentation]. Figures 1-5 The embodiment provides a sludge screening device that can promote the sludge to be transported from left to right, avoid stagnation and accumulation caused by the high viscosity of the sludge, and improve the sludge screening efficiency. The sludge screening device includes a housing 1 and a support frame 2. The support frame 2 is fixedly installed on the front and rear sides of the housing 1. Screening devices are provided inside and outside the housing 1. The screening devices include a screening mechanism, a tapping mechanism, and an anti-clogging mechanism.
[0030] The screening mechanism is located inside the housing 1, the striking mechanism is located on the front of the housing 1, and the anti-blocking mechanism is located inside the housing 1.
[0031] The screening mechanism includes support rollers 301, a screening cylinder 302, guide rails 303, a motor 304, a drive shaft 305, a pinion 306, a gear 307, a spiral plate 308, a discharge port 309, and a feed box 310. Support rollers 301 are fixedly installed on the left and right sides of the inner wall of the housing 1. Multiple support rollers 301 are distributed at equal angles on the inner wall of the housing 1. Guide rails 303 have guide grooves inside, and the support rollers 301 are tumbling along the inner wall of the guide grooves. The support rollers 301 and guide rails 303 cooperate to support and guide the screening cylinder 302, causing the screening cylinder 302 to rotate along the support rollers 301. The screening cylinder 302 is installed inside the housing 1, and its surface has screen holes for screening sludge. Guide rails 303 are fixedly installed on the left and right sides of the outer side of the screening cylinder 302. The motor 304 is fixedly installed on the top left side of the support frame 2. The motor 304 is a YZ model. OL-3-2, the drive shaft 305 is fixedly installed at the output end of the motor 304, the pinion 306 is fixedly installed on the outer left side of the drive shaft 305, the large gear 307 is fixedly installed on the left side of the outer surface of the screening cylinder 302, the spiral plate 308 is fixedly installed inside the spiral plate 308, the discharge port 309 is fixedly installed at the bottom of the housing 1, and the feed box 310 is fixedly installed on the left side of the support frame 2. The lower end of the feed box 310 is located inside the screening cylinder 302. The pinion 306 and the large gear 307 mesh with each other. After the sludge is poured into the feed box 310, the sludge enters the screening cylinder 302 along the feed box 310. By starting the motor 304, the drive shaft 305 and the pinion 306 are driven to rotate. With the pinion 306 meshing with the large gear 307, the screening cylinder 302 rotates. The axial force generated by the spiral plate 308 promotes the sludge to be transported from left to right, avoiding stagnation and accumulation caused by the high viscosity of the sludge.
[0032] To further improve the sludge screening efficiency of the screening cylinder 302, this device is also equipped with a striking mechanism, which includes a cam 401, a spring 402, and a striking block 403. The cam 401 is fixedly installed on the outside of the drive shaft 305, and an installation groove is opened inside the cam 401. The spring 402 and the striking block 403 are installed inside the installation groove, and the striking block 403 can slide along the installation groove. A through groove is opened on the left side of the outer wall of the housing 1, and the striking block 403 passes through the through groove and can collide with the screening cylinder 302. The striking block 403 impacts the screening cylinder 302, causing the screening cylinder 302 to vibrate, thereby improving the sludge screening efficiency of the screening cylinder 302. One end of the spring 402 is fixedly installed on the inner wall of the cam 401. The spring 402 prevents the striking block 403 from having a hard collision with the screening cylinder 302, thus preventing damage to the screening cylinder 302. The striking block 403 is fixedly installed on the other end of the spring 402.
[0033] Example 2:
[0034] Based on Example 1, please refer to Figures 1-4To prevent clogging of the screen holes in the screening cylinder 302, this device is also equipped with an anti-clogging mechanism. The anti-clogging mechanism includes a brush plate 501, bolts 502, a mounting plate 503, and comb teeth 504. The brush plate 501 is installed inside the housing 1. The diameter of the brushes on the brush plate 501 is equal to the diameter of the screen holes, allowing the brush plate 501 to clean the screening cylinder 302 and prevent sludge from clogging the screen holes. The brushes are made of nylon with moderate hardness, preventing scratches on the screening cylinder 302. The bolts 502 are threaded into the left and right ends of the brush plate 501. A slot is provided on the outer surface of the housing 1, and the brush plate 501 is installed inside the slot. Threaded holes are provided at both ends of the slot. The bolts 502 pass through both ends of the brush plate 501 and connect to the threaded holes, thus enabling the brush plate 501 to be cleaned. The installation allows for the removal of the brush plate 501. The mounting plate 503 is fixedly installed on one side of the two guide rails 303. The comb teeth 504 are fixedly installed on the outside of the mounting plate 503. The surface of the comb teeth 504 has grooves, and the width of the grooves is greater than the diameter of the brush on the brush plate 501. When the screening cylinder 302 drives the comb teeth 504 to rotate, the comb teeth 504 collide with the brush plate 501, which can knock off the sludge adhering to the brush plate 501. At the same time, the brush passes through the grooves and further scrapes off the sludge on the brush. Under the action of centrifugal force, the sludge in the grooves is thrown out, thus cleaning the brush plate 501 and the comb teeth 504, thereby improving the cleaning effect of the brush plate 501 on the screening cylinder 302 and improving the sludge screening efficiency.
[0035] In operation, the sludge to be screened is poured into the feed box 310. The sludge enters the screening cylinder 302 along the feed box 310. The starting motor 304 drives the drive shaft 305 and the pinion 306 to rotate. The pinion 306 meshes with the large gear 307, causing the screening cylinder 302 to rotate. Combined with the axial force generated by the spiral plate 308, this propels the sludge from left to right, preventing stagnation and accumulation due to the sludge's high viscosity. During sludge transport, smaller sludge particles are discharged and collected through the discharge port 309, while larger sludge particles are discharged and collected from the right end of the screening cylinder 302. Simultaneously, as the drive shaft 305 rotates, it drives the cam 401 to rotate, causing the striking block 403 to intermittently impact the screening cylinder 302, thus vibrating the screening cylinder 302 and lifting... The high sludge screening efficiency is achieved by rotating the screening cylinder 302 during sludge screening. The cylinder contacts the brushes on the brush plate 501. Since the brush diameter is smaller than the screen hole diameter of the screening cylinder 302, the brushes can extend into the screen hole, preventing sludge blockage and further improving sludge screening efficiency. Simultaneously, the screening cylinder 302 drives the comb teeth 504 to rotate. The comb teeth 504 collide with the brush plate 501, knocking off the sludge adhering to it. The brushes also pass through the tooth grooves, further scraping away the sludge. Under centrifugal force, the sludge in the tooth grooves is thrown out, cleaning the brush plate 501 and comb teeth 504, thus improving the cleaning effect of the brush plate 501 on the screening cylinder 302 and ultimately increasing sludge screening efficiency.
[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
Claims
1. A sludge treatment screening device, comprising a housing (1) and a support frame (2), wherein the support frame (2) is fixedly installed on the front and rear sides of the housing (1), characterized in that: The shell (1) is provided with a screening device inside and outside, the screening device including a screening mechanism, a knocking mechanism and an anti-blocking mechanism; The screening mechanism is located inside the housing (1), the striking mechanism is located on the front of the housing (1), and the anti-blocking mechanism is located inside the housing (1). The screening mechanism includes a support roller (301), a screening cylinder (302), a guide rail (303), a motor (304), a drive shaft (305), a pinion (306), a gear (307), a spiral plate (308), a discharge port (309), and a feed box (310). The support roller (301) is fixedly installed on the left and right sides of the inner wall of the housing (1). The screening cylinder (302) is installed inside the housing (1). The guide rail (303) is fixedly installed on the left and right ends of the outer side of the screening cylinder (302). (304) is fixedly installed on the top left side of the support frame (2), the drive shaft (305) is fixedly installed on the output end of the motor (304), the small gear (306) is fixedly installed on the outer side of the left end of the drive shaft (305), the large gear (307) is fixedly installed on the left side of the outer surface of the screening cylinder (302), the spiral plate (308) is fixedly installed inside the spiral plate (308), the discharge port (309) is fixedly installed on the bottom of the housing (1), and the feed box (310) is fixedly installed on the left side of the support frame (2).
2. The sludge treatment screening device according to claim 1, characterized in that: The number of support rollers (301) is multiple and they are distributed at equal angles on the inner wall of the housing (1). The guide rail (303) has a guide groove inside and the support rollers (301) are tumbled to the inner wall of the guide groove.
3. The sludge treatment screening device according to claim 1, characterized in that: The lower end of the feed box (310) is located inside the screening cylinder (302), and the small gear (306) meshes with the large gear (307).
4. The sludge treatment screening device according to claim 1, characterized in that: The striking mechanism includes a cam (401), a spring (402), and a striking block (403). The cam (401) is fixedly installed on the outside of the drive shaft (305), one end of the spring (402) is fixedly installed on the inner wall of the cam (401), and the striking block (403) is fixedly installed on the other end of the spring (402).
5. A sludge treatment screening device according to claim 4, characterized in that: The cam (401) has an installation groove inside, the spring (402) and the striking block (403) are installed inside the installation groove, and the striking block (403) can slide along the installation groove. The outer wall of the housing (1) has a through groove on the left side, and the striking block (403) passes through the through groove and can collide with the screening cylinder (302).
6. A sludge treatment screening device according to claim 1, characterized in that: The anti-clogging mechanism includes a brush plate (501), bolts (502), mounting plate (503), and comb teeth (504). The brush plate (501) is installed inside the housing (1). The bolts (502) are threaded to the left and right ends inside the brush plate (501). The mounting plate (503) is fixedly installed on one side of the two guide rails (303) on the left and right. The comb teeth (504) are fixedly installed on the outside of the mounting plate (503).
7. A sludge treatment screening device according to claim 6, characterized in that: The outer surface of the housing (1) is provided with a slot, the brush plate (501) is installed inside the slot, and screw holes are provided at both ends of the slot.
8. A sludge treatment screening device according to claim 6, characterized in that: The comb teeth (504) have grooves on their surface, and the width of the grooves is greater than the diameter of the brush on the brush plate (501).