CN214415749U - Sludge dewatering device for sewage treatment - Google Patents

Abstract

The utility model discloses a sludge dewatering device for sewage treatment relates to the sewage treatment field, has solved the problem that sludge dewatering device does not have filtering capability among the prior art, and its technical essential is: the sewage filter comprises a tank body, wherein a sewage inlet pipe is arranged on the tank body, an impurity filter frame is arranged below the sewage inlet pipe on the tank body, an impurity filter screen is arranged on the impurity filter frame, a deslagging groove is arranged on the outer side of the impurity filter frame on the tank body, a deslagging port is arranged on the deslagging groove, a dewatering cavity and a drainage cavity are also arranged below the impurity filter frame on the tank body, the dewatering cavity and the drainage cavity are isolated by a permeation pipe, a driving motor is also arranged on the tank body, the driving motor is connected with a main shaft, the main shaft is fixedly connected with an impurity removal module, and a helical blade is fixedly connected with the main shaft in the dewatering cavity; the utility model discloses an impurity in the impurity filter frame filtration mud can prevent that the impurity in the mud from damaging dewatering device at the sludge dewatering in-process.

Description

Sludge dewatering device for sewage treatment

Technical Field

The utility model relates to a sewage treatment field especially relates to a sludge dewatering device for sewage treatment.

Background

Sewage treatment refers to the purification process that reaches a certain water body or requirement that can reuse after handling sewage, and the sewage treatment mode commonly used at present is mostly physical sedimentation method and chemical sedimentation method, through pouring sewage into the sedimentation tank, carries out physical sedimentation again or adds chemical agent and carries out chemical sedimentation. Sludge needs to be treated in the sewage treatment process, and sludge dewatering is an important process in sludge treatment.

Chinese patent publication No. CN205516761U discloses a spiral conical shaft vacuum dehydration device, which comprises a box body, a spiral conical shaft and a vacuum pump, wherein the box body is fixedly arranged on a rack, a screen is arranged in the box body, the screen is fixedly connected with the rack through a screen framework, and the spiral conical shaft is arranged in the screen; the left side of the box body is provided with a feeding box, the bottom of the box body is provided with a waste liquid collecting port, the right side of the box body is provided with a discharging box, a discharging adjusting device is arranged on the discharging box, the bottom of the box body is provided with a transmission system, and the transmission system is in driving connection with a spiral conical shaft; a filter screen is arranged at the upper part of the box body and is positioned above the spiral conical shaft; the upper side of the box body is also provided with an air extraction opening, a vacuum pump is connected with the air extraction opening, and the outlet of the vacuum pump is connected with a condenser; the device increases operational environment's humidity through preventing that a large amount of steam from getting into on-the-spot operational environment, avoids the waste of the energy, improves the efficiency of dehydration, the energy saving, however, the device does not have the filterable function of mud, because often contain bold debris in the mud, the device is at the in-process of mud dehydration, and the bold debris in the mud damages the device easily, consequently, we have proposed a sludge dewatering device for sewage treatment.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to above-mentioned defect, provide a sludge dewatering device for sewage treatment to solve among the prior art sludge dewatering device and do not have filtering capability's problem.

In order to achieve the above object, the utility model provides a following technical scheme:

a sludge dewatering device for sewage treatment comprises a tank body, wherein a sewage inlet pipe is arranged on the tank body, an impurity filtering frame is arranged below an opening part in the tank body at the sewage inlet pipe, an impurity filtering net for filtering impurities is arranged on the impurity filtering frame, the impurity filtering net is a concave spherical surface, a slag discharging groove is arranged on the outer side of the impurity filtering frame at the tank body, the slag discharging groove is annularly arranged on the outer side of the tank body, a slag discharging hole is arranged on the slag discharging groove, a dewatering cavity and a water discharging cavity are further arranged below the impurity filtering frame at the tank body, the dewatering cavity and the water discharging cavity are isolated by a permeation pipe, the dewatering cavity is in a conical shape with a large upper end and a small lower end, a driving motor is further arranged on the tank body, a main shaft is connected in the tank body, an impurity removing module is fixedly connected to the main shaft on the impurity filtering net, an impurity removing plate uniformly distributed around the axis of the main shaft is arranged on the impurity removing module, and is an arc-shaped plate, the bending direction of the impurity removing plate is opposite to the rotating direction of the main shaft, the impurity removing plate is attached to the impurity filtering net, the main shaft is provided with a fixedly connected helical blade in the dewatering cavity, the helical blade is in a conical shape with a large upper end and a small lower end, and the pitch of the helical blade is gradually reduced from top to bottom.

As a further proposal of the utility model, the drainage cavity is connected with a second drainage pipe.

As a further proposal of the utility model, the bottom of the slag discharging groove is an inclined plane, and the slag discharging port is at the lowest point of the bottom of the slag discharging groove.

As a further scheme of the utility model, the edulcoration module is still including removing the solid fixed ring of miscellaneous board, and on edulcoration board fixed connection removed the solid fixed ring of miscellaneous board, the one end that edulcoration board and impurity filter screen are connected was the arc.

As a further proposal of the utility model, a water seepage frame is arranged between the dehydration cavity and the impurity filtering frame, the water seepage frame is fixedly connected to the inner wall of the tank body through a connecting rod, the water seepage frame is in a tubular shape with an opening at the upper end, one end of the water seepage frame close to the impurity filtering frame is provided with a water seepage layer and a supporting net, the supporting net is a concave spherical surface, and the water seepage layer is fixedly connected with the supporting net; the one end that impurity filter frame was kept away from to the infiltration frame is equipped with first drain pipe, the main shaft is in infiltration layer department still fixedly connected with lead the mud module, the structure of leading the mud module is the same with the structure of edulcoration module, leads the bottom and the infiltration layer laminating of mud module.

As a further aspect of the utility model, impurity filters the frame and is equipped with the open-ended tube-shape for both ends, and impurity filters the bottom of frame and is leaking hopper-shaped.

To sum up, compared with the prior art, the utility model has the following beneficial effects:

1. the utility model discloses an impurity in the impurity filter frame filtration mud can prevent that the impurity in the mud from damaging dewatering device at the sludge dewatering in-process.

2. The utility model discloses still carry out prefilter before the dehydration for mud carries out the preliminary dehydration, improves dehydration efficiency.

Drawings

FIG. 1 is a schematic view showing the structure of a sludge dehydrating apparatus for sewage treatment.

FIG. 2 is a schematic structural diagram of an impurity removal module in a sludge dewatering device for sewage treatment.

FIG. 3 is a front view of an impurity removing module in a sludge dehydrating apparatus for sewage treatment.

FIG. 4 is a schematic view showing the connection between a helical blade and a main shaft in a sludge dehydrating apparatus for sewage treatment.

Reference numerals: 1-tank body, 11-sewage inlet pipe, 12-first drain pipe, 13-second drain pipe, 14-slag discharge groove, 15-slag discharge port, 16-dehydration cavity, 17-drain cavity, 2-impurity filter stand, 21-impurity filter screen, 3-water seepage stand, 31-water seepage layer, 32-support net, 4-impurity removal module, 41-impurity removal plate fixing ring, 42-impurity removal plate, 5-mud guide module, 6-main shaft, 7-driving motor and 8-helical blade.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.

Example 1

As shown in fig. 1-3, a sludge dewatering device for sewage treatment comprises a tank body 1, wherein a sewage inlet pipe 11 connected with a sludge pump is arranged on the tank body 1, an impurity filtering frame 2 is arranged below the sewage inlet pipe 11 on the inner opening of the tank body 1 on the tank body 1, an impurity filtering net 21 for filtering impurities is arranged on the impurity filtering frame 2, the impurity filtering net 21 is a concave spherical surface, a deslagging trough 14 is arranged on the outer side of the impurity filtering frame 2 on the tank body 1, the deslagging trough 14 is annularly arranged on the outer side of the tank body 1, a deslagging port 15 is arranged on the deslagging trough 14, a dewatering cavity 16 and a drainage cavity 17 are also arranged on the tank body 1 below the impurity filtering frame 2, the dewatering cavity 16 and the drainage cavity 17 are isolated by a permeation pipe, the dewatering cavity 16 is in a conical shape with a large upper end and a small lower end, a driving motor 7 is also arranged on the tank body 1, the driving motor 7 is connected with a main shaft 6 in the tank body 1, the main shaft 6 is fixedly connected with an impurity removing module 4 on an impurity filter screen 21, the impurity removing module 4 is provided with impurity removing plates 42 uniformly distributed around the axis of the main shaft 6, the impurity removing plates 42 are arc-shaped plates, the bending direction of the impurity removing plates 42 is opposite to the rotating direction of the main shaft 6, the impurity removing plates 42 are attached to the impurity filter screen 21, a spiral blade 8 is fixedly connected in a dehydration cavity 16 of the main shaft 6, the spiral blade 8 is in a conical shape with a large upper end and a small lower end, and the pitch of the spiral blade 8 is gradually reduced from top to bottom;

when the sludge is dewatered, the sludge pump pumps the sludge containing impurities into the tank body 1 through the sewage inlet pipe 11 and falls on the impurity filter screen 21, the sludge falls into the dewatering cavity 16 from the filter screen holes on the impurity filter screen 21, the impurities in the sludge are blocked on the impurity filter screen 21, when the driving motor 7 is electrified to rotate, the driving motor 7 drives the main shaft 6 and the helical blade 8 to rotate, because the main shaft 6 is arc-shaped, when the main shaft 6 rotates, the impurities on the impurity filter screen 21 are pushed to the outer side of the main shaft 6, and slide down into the slag discharging groove 14 from the impurity filter screen 21 and slide out from the slag discharging port 15, when the helical blade 8 rotates, the sludge is conveyed from top to bottom, because the pitch of the helical blades 8 is reduced from top to bottom and the dehydration cavity 16 is conical, the sludge is compressed in the conveying process, and water in the sludge flows into the drainage cavity 17 from pores on the permeation tube under the action of the compression force;

supporting legs are arranged below the tank body 1, a second drain pipe 13 is connected to the drain cavity 17, and the second drain pipe 13 is used for draining permeated water;

further, in order to facilitate smooth discharge of impurities, the bottom of the slag discharging groove 14 is an inclined plane, and the slag discharging port 15 is located at the lowest point of the bottom of the slag discharging groove 14;

the impurity filtering frame 2 is in a cylindrical shape with openings at two ends, the impurity filtering frame 2 is fixedly connected to the inner wall of the tank body 1, and in some examples, the impurity filtering frame 2 is fixedly connected to the tank body 1 in a welding mode;

the impurity removing module 4 further comprises an impurity removing plate fixing ring 41, the impurity removing plate 42 is fixedly connected to the impurity removing plate fixing ring 41, one end of the impurity removing plate 42, which is connected with the impurity filtering net 21, is arc-shaped, so that the impurity removing plate 42 is attached to the impurity filtering net 21, in some examples, the impurity removing plate 42 is fixedly connected with the impurity removing plate 42 in a welding manner, and the impurity removing plate fixing ring 41 is fixedly connected to the main shaft 6 through screws;

further, in order to prevent the main shaft 6 from vibrating, the bottom of the main shaft 6 is connected with the tank body 1 in a revolute pair mode, and a sludge discharge hole for discharging sludge is formed in the bottom of the dehydration cavity 16;

in some examples, the permeate tube is manufactured by polymer processing techniques, the helical blades 8 being permeable to water and the helical blades 8 being able to retain sludge;

as another embodiment of the present invention, the permeation tube includes a plurality of layers of permeation cloth, the permeation cloth is fixedly connected to the tapered support tube, and the support tube is provided with a permeable hole.

As another embodiment of the present invention, a water penetration frame 3 is further disposed between the dewatering cavity 16 and the impurity filtering frame 2, the water penetration frame 3 is fixedly connected to the inner wall of the tank body 1 through a connecting rod, the water penetration frame 3 is a cylinder with an opening at the upper end, one end of the water penetration frame 3 close to the impurity filtering frame 2 is provided with a water penetration layer 31 and a supporting net 32, the water penetration layer 31 is permeable cloth, the supporting net 32 is a concave spherical surface, the water penetration layer 31 is fixedly connected with the supporting net 32, and the water penetration frame 3 is used for preliminarily dewatering sludge to prevent excessive water entering the slag discharging groove 14; a first drainage pipe 12 is arranged at one end, far away from the impurity filtering frame 2, of the water seepage frame 3, a mud guide module 5 is fixedly connected to the position of the main shaft 6 on the water seepage layer 31, the structure of the mud guide module 5 is the same as that of the impurity removing module 4, and the bottom of the mud guide module 5 is attached to the water seepage layer 31;

the sludge falling from the impurity filtering frame 2 falls on the water seepage layer 31, and the water in the sludge falls and is filtered by the water seepage layer 31, flows into the water seepage frame 3 and is discharged from the first water discharge pipe 12; when the main shaft 6 drives the mud guiding module 5 to rotate, the mud guiding module 5 pushes the mud on the water seepage layer 31 to the outer edge of the water seepage frame 3 and falls into the dewatering cavity 16;

further, in order to prevent the sludge falling from the impurity filtering frame 2 from directly falling into the dewatering cavity 16, the bottom of the impurity filtering frame 2 is funnel-shaped.

To sum up, the utility model discloses a theory of operation is:

when sludge is dehydrated, sludge containing impurities is pumped into the tank body 1 by a sludge pump through a sewage inlet pipe 11 and falls on an impurity filter screen 21, the sludge falls into a dehydration cavity 16 from a filter screen hole on the impurity filter screen 21, the impurities in the sludge are blocked on the impurity filter screen 21, when a driving motor 7 is electrified and rotates, the driving motor 7 drives a main shaft 6 and a helical blade 8 to rotate, because the main shaft 6 is arc-shaped, when the main shaft 6 rotates, the impurities on the impurity filter screen 21 are pushed to the outer side of the main shaft 6, and slide into a slag discharge groove 14 from the impurity filter screen 21, and then slide out from a slag discharge port 15, the sludge falling from an impurity filter frame 2 falls on a water seepage layer 31, and water in the sludge falls through the filtration of the water seepage layer 31, flows into the water seepage frame 3 and is discharged from a first water discharge pipe 12; when the main shaft 6 drives the mud guiding module 5 to rotate, the mud guiding module 5 pushes the mud on the water seepage layer 31 to the outer edge of the water seepage frame 3 and falls into the dewatering cavity 16; when the helical blade 8 rotates, the sludge is conveyed from top to bottom, and the pitch of the helical blade 8 is reduced from top to bottom and the dehydration cavity 16 is conical, so that the sludge is compressed in the conveying process, and water in the sludge flows into the drainage cavity 17 from the pores on the permeation tube under the action of the compression force.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a sludge dewatering device for sewage treatment, includes a jar body (1), be equipped with into dirty pipe (11) on jar body (1), its characterized in that, jar body (1) is being advanced dirty pipe (11) and is being established below the oral area in jar body (1) and is being equipped with impurity filter frame (2), be equipped with impurity filter screen (21) that are used for filtering impurity on impurity filter frame (2), impurity filter screen (21) are sunken shape sphere, and jar body (1) is equipped with scum groove (14) in the outside of impurity filter frame (2), scum groove (14) are the annular and establish in the outside of jar body (1), are equipped with scum hole (15) on scum groove (14), and jar body (1) still is equipped with dehydration chamber (16) and drainage chamber (17) in the below of impurity filter frame (2), and keep apart through the infiltration pipe between dehydration chamber (16) and drainage chamber (17), and dehydration chamber (16) are big in upper end, sewage chamber (16), The little toper of lower extreme still is equipped with driving motor (7) on jar body (1), and driving motor (7) are at jar body (1) in-connection has main shaft (6), main shaft (6) fixedly connected with edulcoration module (4) on impurity filter screen (21), be equipped with impurity removing plate (42) around the axis equipartition of main shaft (6) on impurity removing module (4), impurity removing plate (42) are the arc, and the direction of bending of removing impurity plate (42) is opposite with the direction of rotation of main shaft (6), and impurity removing plate (42) and impurity filter screen (21) laminating, and main shaft (6) are equipped with fixedly connected with helical blade (8) in dehydration chamber (16), helical blade (8) are the toper that the upper end is big, the lower extreme is little, and the pitch top-down of helical blade (8) reduces gradually.

2. Sludge dewatering apparatus for sewage treatment according to claim 1, characterised in that a second drain pipe (13) is connected to the drain chamber (17).

3. The sludge dewatering device for sewage treatment according to claim 1, wherein the bottom of the slag discharge groove (14) is a slope, and the slag discharge port (15) is at the lowest point of the bottom of the slag discharge groove (14).

4. The sludge dewatering device for sewage treatment according to claim 1, wherein the impurity removing module (4) further comprises an impurity removing plate fixing ring (41), the impurity removing plate (42) is fixedly connected to the impurity removing plate fixing ring (41), and one end of the impurity removing plate (42) connected with the impurity filtering net (21) is arc-shaped.

5. The sludge dewatering device for sewage treatment according to any one of claims 1 to 4, wherein a water seepage frame (3) is further arranged between the dewatering cavity (16) and the impurity filtering frame (2), the water seepage frame (3) is fixedly connected to the inner wall of the tank body (1) through a connecting rod, the water seepage frame (3) is in a cylindrical shape with an opening at the upper end, a water seepage layer (31) and a supporting net (32) are arranged at one end of the water seepage frame (3) close to the impurity filtering frame (2), the supporting net (32) is a concave spherical surface, and the water seepage layer (31) is fixedly connected with the supporting net (32); one end that impurity filter frame (2) was kept away from in infiltration frame (3) is equipped with first drain pipe (12), main shaft (6) locate still fixedly connected with at infiltration layer (31) and lead mud module (5), the structure of leading mud module (5) is the same with the structure of edulcoration module (4), leads the bottom and the infiltration layer (31) laminating of mud module (5).

6. The sludge dewatering device for sewage treatment according to claim 5, wherein the impurity filtering rack (2) is a cylinder with openings at both ends, and the bottom of the impurity filtering rack (2) is funnel-shaped.

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