Sludge dewatering device for sewage treatment plant

Abstract

The utility model relates to a sludge dewatering device of a sewage treatment plant, which is applied to the field of sludge dewatering devices and comprises a dewatering treatment bin, filter pressing belts are arranged on the upper side and the lower side of the inner end of the dewatering treatment bin in a matched mode, the two filter pressing belts are symmetrically arranged, and a discharging electric conveying belt is arranged at the lower end of the dewatering treatment bin. A transverse bearing roller shaft is arranged between the discharging electric conveying belt and the dewatering treatment bin, the outer end of the transverse bearing roller shaft is fixedly connected with a plurality of bearing transverse battens, the bearing transverse battens are annularly distributed on the outer side of the transverse bearing roller shaft at equal intervals, and a plurality of opening circles are formed in the outer sides of the bearing transverse battens; in the sludge dewatering device of the sewage treatment plant, the sludge dewatering device can effectively achieve sludge dewatering and mud block crushing, reduce discharging blockage, improve the material conveying efficiency and the treatment effect, guarantee production continuity and reduce economic losses.

Description

TECHNICAL FIELD

[0001] The utility model relates to a sludge dewatering device, in particular to a sludge dewatering device for sewage treatment plant field. BACKGROUND

[0002] In the field of sewage treatment, with the acceleration of industrialization process and the continuous growth of urban population, the sewage treatment capacity continues to rise, and the amount of sludge produced is also growing. As a byproduct of sewage treatment process, proper treatment and disposal of sludge has become a key problem to be solved in the field of environmental protection.

[0003] The Chinese patent with publication number CN210419698U discloses a sludge dewatering powder feeding device for sewage treatment plant, which comprises a blower, a first conveying pipe, a powder mixing container and a cyclone separator. The first conveying pipe is horizontally arranged. The powder mixing container is vertically arranged above the first conveying pipe. The bottom of the powder mixing container is connected with the sidewall of the first conveying pipe through a communication pipe. An adjusting valve is arranged on the communication pipe to adjust the speed of the powder falling into the first conveying pipe. One end of the first conveying pipe is connected with the blower, and the other end is connected with the feed inlet of the cyclone separator. The blower is used as the power source, and gas is used as the conveying medium to prevent the powder from caking due to extrusion during the conveying process. Thus, the technical problem of uneven distribution of the powder on the sludge due to caking of the powder during the conveying process is effectively avoided.

[0004] The large sludge cake treated by the sludge dewatering device is prone to cause jamming and wear of the conveying equipment during transportation, which seriously affects the service life and running stability of the equipment. For example, when using a belt conveyor to transport the large sludge cake, the irregular shape and uneven weight distribution of the sludge cake often cause the belt to deviate and tear, which requires frequent shutdown for maintenance, greatly reduces the material conveying efficiency, and further affects the production continuity of the entire sewage treatment plant. SUMMARY

[0005] In view of the above prior art, the technical problem to be solved by the utility model is that the large sludge cake treated by the sludge dewatering device is prone to cause jamming and wear of the conveying equipment during transportation, which seriously affects the service life and running stability of the equipment.

[0006] The utility model provides a kind of sludge dewatering device of sewage treatment plant to solve the above-mentioned problems, including dehydration treatment bin, the inner end of dehydration treatment bin upper and lower sides are symmetrically provided with filter press belt, two filter press belts are symmetrically arranged, the lower end of dehydration treatment bin is provided with discharge power conveying belt, discharge power conveying belt and dehydration treatment bin between being provided with transverse load roller, the outer end of transverse load roller is fixedly connected with multiple material-accepting horizontal plate strips, multiple material-accepting horizontal plate strips are annularly equidistantly distributed outside transverse load roller, the outside of material-accepting horizontal plate strip is equipped with several open circles, the front and rear ends of material-accepting horizontal plate strip are provided with several oblique sharp broken block assist rods, the front and rear ends of dehydration treatment bin are fixedly connected with material retaining frame plate, two material retaining frame plates are symmetrically arranged, the material retaining frame plate on rear side is fixedly connected with a pair of support strip plate close to one end of discharge power conveying belt, two support strip plates are connected with the left and right sides of transverse load roller respectively, the left side of transverse load roller is provided with driving motor.

[0007] In the sludge dewatering device of sewage treatment plant, the device can effectively realize sludge dewatering and mud block breaking, reduce discharge jam, improve material conveying efficiency and processing effect, ensure production continuity, and reduce economic loss.

[0008] As a further improvement of the present application, the rear end of the dehydration treatment bin is provided with a sludge inlet, and the plurality of telescopic oblique sharp broken block assist rods are located between the corresponding upper and lower open circles.

[0009] As a further improvement of the present application, the output end of the driving motor is connected with the transverse load roller, and the rear end of the material retaining frame plate on the rear side is fixedly connected with a side load strip.

[0010] As a further improvement of the present application, the upper end of the side load strip is fixedly connected with a material distribution horizontal strip, and the upper end of the material distribution horizontal strip is fixedly connected with a plurality of fence diamond surface vertical strips.

[0011] As another improvement of the present application, the plurality of fence diamond surface vertical strips are equidistantly arranged from left to right, and are located between the transverse load roller and the filter press belt.

[0012] As a further improvement of the present application, a sludge collecting tank is arranged on the right side of the lower end of the material retaining frame plate, and the opening of the sludge collecting tank is matched with the discharge side of the discharge power conveying belt.

[0013] As a further improvement of the present application, a plurality of edge sharp inclined insertion rods are fixedly connected to the outer wall of the oblique sharp broken block assist rod, and the plurality of edge sharp inclined insertion rods are uniformly distributed.

[0014] In summary, in the sludge dewatering device of the sewage treatment plant, the water-containing sludge is sent into the dewatering treatment bin through the sludge feeding port, and solid-liquid separation is realized by extrusion of the symmetrical pressure filtration belts arranged in the bin to obtain dry sludge blocks. When discharging, the sludge blocks are output from the dewatering treatment bin by the discharging electric power conveying belt. The transverse load-bearing roller shaft between the dewatering treatment bin and the discharging electric power conveying belt is driven to rotate by the driving motor. The large sludge blocks first contact the transverse load-bearing roller shaft and then collide with the inclined tip block breaking assisting rod on the load-bearing horizontal strip to be broken into small pieces. The open circle on the load-bearing horizontal strip can disperse the impact force to ensure the strength of the equipment and reduce the maintenance cost. The fence rhombus vertical strip between the pressure filtration belt and the discharging electric power conveying belt can preliminarily break the large sludge blocks to make the size of the sludge blocks smaller and more uniform. In addition, the inclined tip block breaking assisting rod on the outer wall of the inclined tip block breaking assisting rod can enhance the sludge breaking capacity to meet the requirements of different subsequent treatment processes on the particle size of the sludge blocks. Overall, the device can effectively realize sludge dewatering and sludge block breaking, reduce discharging jamming, improve material conveying efficiency and treatment effect, ensure production continuity, and reduce economic loss. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a side view of the dewatering treatment bin of the first embodiment of the present application;

[0016] Figure 2 is an enlarged view of the discharging electric power conveying belt of the first embodiment of the present application;

[0017] Figure 3 is a horizontal strip diagram of the first embodiment of the present application;

[0018] Figure 4 is a sludge pressing state diagram of the dewatering treatment bin of the first embodiment of the present application;

[0019] Figure 5 is a side view of the load-bearing horizontal strip of the first embodiment of the present application;

[0020] Figure 6 is a schematic view of the dewatering treatment bin of the first and second embodiments of the present application; Figure 5 is a partial cut-off enlarged view of the load-bearing horizontal strip;

[0021] Figure 7 is an enlarged view of the inclined tip block breaking assisting rod of the second embodiment of the present application.

[0022] Explanation of reference numerals in the drawings:

[0023] 1, dewatering treatment bin; 2, pressure filtration belt; 3, side load-bearing strip rod; 4, material distribution horizontal strip; 5, support strip plate; 6, transverse load-bearing roller shaft; 7, load-bearing horizontal strip; 8, open circle; 9, inclined tip block breaking assisting rod; 10, discharging electric power conveying belt; 11, material blocking frame plate; 12, driving motor; 13, fence rhombus vertical strip; 14, sludge feeding port; 15, sludge collecting tank; 16, inclined tip insertion rod. DETAILED DESCRIPTION

[0024] Two embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0025] First embodiment:

[0026] Figures 1-6 A sludge dewatering device of a sewage treatment plant is shown, which comprises a dewatering treatment bin 1, a filter press belt 2 is arranged on the upper and lower sides of the inner end of the dewatering treatment bin 1, the two filter press belts 2 are symmetrically arranged, a discharge power conveying belt 10 is arranged at the lower end of the dewatering treatment bin 1, a transverse load-bearing roller shaft 6 is arranged between the discharge power conveying belt 10 and the dewatering treatment bin 1, a plurality of material supporting horizontal plate strips 7 are fixedly connected to the outer end of the transverse load-bearing roller shaft 6, the plurality of material supporting horizontal plate strips 7 are distributed in a ring shape at equal intervals on the outer side of the transverse load-bearing roller shaft 6, a plurality of open circles 8 are formed on the outer side of the material supporting horizontal plate strip 7, a plurality of oblique pointed broken block assisting rods 9 are arranged at the front and rear ends of the material supporting horizontal plate strip 7, a material blocking frame plate 11 is fixedly connected to the front and rear ends of the dewatering treatment bin 1, the two material blocking frame plates 11 are symmetrically arranged, one end of the material blocking frame plate 11 located on the rear side close to the discharge power conveying belt 10 is fixedly connected to a pair of support strip plates 5, the two support strip plates 5 are connected to the left and right sides of the transverse load-bearing roller shaft 6, respectively, and a driving motor 12 is arranged on the left side of the transverse load-bearing roller shaft 6.

[0027] Figures 1-6 The rear end of the dewatering treatment bin 1 is provided with a sludge feeding port 14, the plurality of telescopic oblique pointed broken block assisting rods 9 are respectively located between the corresponding open circles 8 on the upper and lower sides, the output end of the driving motor 12 is connected to the transverse load-bearing roller shaft 6, the rear end of the material blocking frame plate 11 located on the rear side is fixedly connected to a side load-bearing strip rod 3, the upper end of the side load-bearing strip rod 3 is fixedly connected to a material distributing horizontal strip 4, the upper end of the material distributing horizontal strip 4 is fixedly connected to a plurality of fence diamond surface vertical strips 13, the plurality of fence diamond surface vertical strips 13 are arranged at equal intervals from left to right, the plurality of fence diamond surface vertical strips 13 are respectively located between the transverse load-bearing roller shaft 6 and the filter press belt 2, a sludge collecting tank 15 is arranged on the right side of the lower end of the material blocking frame plate 11, and the opening of the sludge collecting tank 15 is matched with the discharge side of the discharge power conveying belt 10.

[0028] Figures 1-6The sewage treatment plant sludge dewatering device involved in the technical solution shows that the water-containing sludge is transported into the inside of the dewatering treatment bin 1 through the sludge feeding port 14, two groups of filter presses 2 are arranged in the dewatering treatment bin 1, and the filter presses 2 are distributed in a symmetrical manner and implement extrusion operation on the sludge through the pressure applied by a specific mechanical structure. In this process, the water in the sludge is squeezed out from the gap of the filter presses 2 under the action of the pressure, so that solid-liquid separation is realized, and dry mud blocks are obtained. When the mud blocks after dewatering need to be discharged, the discharge power conveying belt 10 outputs the mud blocks from the dewatering treatment bin 1 in an orderly manner. A transverse load-bearing roller shaft 6 is arranged between the dewatering treatment bin 1 and the discharge power conveying belt 10, the transverse load-bearing roller shaft 6 is powered by a driving motor 12 to realize stable rotation. When the large dry mud blocks fall from the dewatering treatment bin 1, they first make preliminary contact with the transverse load-bearing roller shaft 6, and then sequentially contact multiple load-bearing horizontal plate strips 7 that are annularly and equidistantly distributed at the outer end of the transverse load-bearing roller shaft 6 by means of the falling force of the falling mud blocks. The surfaces of the load-bearing horizontal plate strips 7 are uniformly provided with a plurality of inclined sharp breaking block assisting rods 9. When the mud blocks contact the inclined sharp breaking block assisting rods 9, the mud blocks are subjected to a breaking force generated by the relative motion of the two and the gravity of the mud blocks. This breaking force can effectively break the large mud blocks into small blocks, which is beneficial to subsequent processing. In addition, a plurality of open hole circles 8 are opened on the outer side of the load-bearing horizontal plate strip 7, which can effectively share the impact force generated when the mud blocks are discharged. Through the structural design of the open hole circle 8, the concentrated impact force is dispersed to multiple positions, avoiding the situation that the local force is too large, so that the strength of the overall structure is guaranteed, the service life of the equipment is prolonged, and the maintenance cost is reduced. Compared with the large mud cake, the small mud blocks after breaking have obvious advantages when transported on the discharge power conveying belt 10. The small mud blocks have uniform weight distribution and improved shape regularity, and are not easy to cause the discharge power conveying belt 10 to appear jamming phenomenon due to excessive weight or irregular shape, greatly reducing the wear of the conveying belt, effectively improving the transportation speed, and thus improving the overall material conveying efficiency, guaranteeing the continuity of the production process, and reducing the economic loss caused by production interruption. Between the filter presses 2 and the discharge power conveying belt 10, a plurality of fence diamond vertical strips 13 are horizontally distributed. These fence diamond vertical strips 13 can preliminarily break the large sludge during the discharging process. When the large mud blocks pass through this place, they are blocked and divided by the structure of the fence diamond vertical strips 13, further reducing the size of the mud blocks. This design not only improves the efficiency of mud block breaking, but also makes the decomposition of the mud blocks more uniform, providing better raw materials for subsequent processing procedures.

[0029] Second embodiment:

[0030] Figures 6-7The sludge dewatering device of a sewage treatment plant is shown, the outer side wall of the oblique tip block breaking assisting rod 9 is fixedly connected with a plurality of oblique tip inserting rods 16, the plurality of oblique tip inserting rods 16 are uniformly distributed between the oblique tip inserting rods 16, and a plurality of oblique tip inserting rods 16 are arranged on the outer side wall of the oblique tip block breaking assisting rod 9, the plurality of oblique tip inserting rods 16 further enhance the decomposition ability of the mud block, when the mud block contacts the oblique tip block breaking assisting rod 9, the oblique tip inserting rod 16 can be embedded in the inside of the mud block, and the oblique surface structure can generate additional shearing force and tearing force in the stress process of the mud block, so that the decomposition of the mud block is stronger, the design can more completely decompose the large mud block into small pieces, meet the requirements of different subsequent treatment processes on the particle size of the mud block, and improve the adaptability and treatment effect of the whole sludge dewatering device.

[0031] In combination with the actual demand, the above-mentioned embodiments of the present application are not limited to the scope, various changes within the knowledge of those skilled in the art without departing from the concept of the present application still fall within the protection scope of the present application.

Claims

1. A sludge dewatering device for a sewage treatment plant, characterised in that: The utility model relates to a sludge dewatering treatment device, including dewatering treatment bin (1), the lower side of the inner end of dewatering treatment bin (1) is equipped with filter press belt (2) cooperation and arrangement, the lower end of dewatering treatment bin (1) is equipped with discharge power conveying belt (10), be equipped with transverse bearing roller axle (6) between discharge power conveying belt (10) and dewatering treatment bin (1), the outer end of transverse bearing roller axle (6) is fixedly connected with a plurality of material bearing horizontal batten (7), a plurality of material bearing horizontal batten (7) are equidistantly distributed in ring shape outside transverse bearing roller axle (6), a plurality of aperture circles (8) are seted up outside material bearing horizontal batten (7), the front and rear ends of material bearing horizontal batten (7) are equipped with a plurality of oblique pointed broken block assist rods (9), the front and rear ends of dewatering treatment bin (1) are fixedly connected with the material blocking frame board (11), two material blocking frame boards (11) are symmetrically arranged, the material blocking frame board (11) on the rear side is fixedly connected with a pair of support strip boards (5) close to one end of discharge power conveying belt (10), two support strip boards (5) are connected with the left and right sides of transverse bearing roller axle (6) respectively, the left side of transverse bearing roller axle (6) is equipped with drive motor (12).

2. A sludge dewatering device for a sewage treatment plant according to claim 1, characterised in that: The rear end of the dewatering treatment bin (1) is provided with a sludge inlet (14), and a plurality of telescopic oblique pointed broken block assist rods (9) are respectively located between the corresponding aperture circles (8) above and below.

3. A sludge dewatering device for a sewage treatment plant as claimed in claim 1, characterised in that: The output end of the drive motor (12) is connected with the transverse bearing roller axle (6), and the rear end of the rear material blocking frame plate (11) is fixedly connected with a side bearing strip bar (3).

4. A sewage treatment plant sludge dewatering apparatus according to claim 3, characterised in that: The upper end of the side bearing strip bar (3) is fixedly connected with a material distribution horizontal strip (4), and the upper end of the material distribution horizontal strip (4) is fixedly connected with a plurality of fence diamond surface vertical strips (13).

5. A sewage treatment plant sludge dewatering apparatus according to claim 4, characterised in that: A plurality of fence diamond surface vertical strips (13) are equidistantly arranged from left to right between the plurality of fence diamond surface vertical strips (13), and the plurality of fence diamond surface vertical strips (13) are respectively located between the transverse bearing roller axle (6) and the filter press belt (2).

6. A sludge dewatering device for a sewage treatment plant as claimed in claim 1, characterised in that: The lower right side of the material blocking frame plate (11) is provided with a sludge collecting tank (15), and the opening of the sludge collecting tank (15) is matched with the discharge side of the discharge power conveying belt (10).

7. A sludge dewatering device for a sewage treatment plant as claimed in claim 1, characterised in that: The outer wall of the oblique pointed broken block assist rod (9) is fixedly connected with a plurality of edge sharp inclined insertion rods (16), and the plurality of edge sharp inclined insertion rods (16) are uniformly distributed.

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