CN210127176U

CN210127176U - Excess sludge pretreatment device

Info

Publication number: CN210127176U
Application number: CN201920436630.1U
Authority: CN
Inventors: 贾丽; 武晓敏
Original assignee: Chongqing City Management College
Current assignee: Chongqing City Management College
Priority date: 2019-04-02
Filing date: 2019-04-02
Publication date: 2020-03-06
Anticipated expiration: 2029-04-02

Abstract

The utility model provides a surplus sludge pretreatment device belongs to sludge treatment technical field. The device solves the problems of unreasonable structural design and poor treatment effect of the existing excess sludge pretreatment device. The residual sludge pretreatment device comprises a cylindrical body with an inner cavity, wherein the cylindrical body is provided with an inlet and an outlet which are communicated with the inner cavity, a lifting assembly is arranged above the cylindrical body, a stirring rod driven by a stirring motor is arranged on the lifting assembly, and the lower end of the stirring rod extends into the inner cavity; the bottom of inner chamber is equipped with the mounting hole, is equipped with the ultrasonic wave subassembly in the mounting hole, and the bottom of inner chamber still is equipped with the seal assembly who is used for keeping apart ultrasonic wave subassembly and inner chamber. The utility model has the advantages of good treatment effect, reasonable structural design and the like.

Description

Excess sludge pretreatment device

Technical Field

The utility model belongs to the technical field of sludge treatment, a surplus sludge pretreatment device is related to.

Background

Along with the increasing discharge of urban industrial wastewater and domestic sewage, the urban sewage treatment rate is also improved year by year, the sludge yield of the urban sewage treatment plant is also increased sharply, the sewage treatment plant needs to discharge a large amount of excess sludge, the huge amount of sludge needs to be further treated, and secondary pollution is caused if the sludge cannot be reasonably treated. At present, various municipal sludge treatment methods are available, such as landfill, incineration and comprehensive utilization, but before resource utilization, sludge needs to be pretreated. The sludge contains microorganisms, the anaerobic digestion time is a long process, and the hydrolysis acidification speed is slow, so the sludge needs to be cracked, and the release of sludge organic matters is accelerated.

Therefore, the Chinese patent discloses a sludge ultrasonic cracking and tempering device (with an authorization publication number of CN 204607816U), which mainly comprises an ultrasonic generator, an ultrasonic sludge cracking device, a sludge tempering device and a dosing device; an ultrasonic probe is arranged above the inside of the ultrasonic sludge cracking device and is connected with an ultrasonic generator through a cable; the sludge conditioning device is provided with a stirrer with two stirring blades.

The ultrasonic disintegration and conditioning device for the sludge utilizes ultrasonic waves to break cells in the sludge, release inclusion, reduce anaerobic digestion time of sludge treatment after disintegration, accelerate hydrolysis and acidification speed, and release sludge organic matters, but still has the following problems: the ultrasonic probe and the like are inconvenient to install, the structural design is unreasonable, two storage bodies (tank bodies) are needed for containing sludge, the occupied space is large, and the use cost is high; the position of the stirrer is fixed, so that the sludge in the storage body cannot be completely stirred, and the stirring effect is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problems in the prior art and providing the excess sludge pretreatment device with reasonable structural design.

The purpose of the utility model can be realized by the following technical proposal:

the excess sludge pretreatment device comprises a cylindrical body with an inner cavity, wherein the cylindrical body is provided with an inlet and an outlet which are communicated with the inner cavity; the bottom of inner chamber is equipped with the mounting hole, the mounting hole in be equipped with the ultrasonic wave subassembly, the bottom of inner chamber still is equipped with the seal assembly who is used for keeping apart ultrasonic wave subassembly and inner chamber.

In foretell surplus sludge preprocessing device, the ultrasonic wave subassembly include ceramic supersound transmission head, toper guided wave stick, ceramic piezoelectric vibrator and fixed block, the big terminal surface of toper guided wave stick supports and leans on the lower terminal surface of ceramic supersound transmission head, the fixed block pass through the fastener and fix ceramic piezoelectric vibrator on the little terminal surface of toper guided wave stick, the upper end of ceramic supersound transmission head is equipped with limit structure.

In foretell surplus sludge preprocessing device, limit structure including leaning on the limiting plate on the cavity bottom surface, the lower part of limiting plate is equipped with spacing fender edge, the main aspects department of toper guided wave stick has the spacing portion one of radial outside extension, the lower extreme that spacing fender edge has the spacing portion two that extends to spacing portion below department, spacing fender edge and toper guided wave stick between be equipped with the insulating layer.

In the above residual sludge pretreatment device, the bottom of the inner cavity is provided with a mounting groove matched with the limiting plate, and the mounting hole is arranged in the mounting groove.

In the above residual sludge pretreatment device, the sealing assembly includes a sealing plate abutting against the bottom of the inner cavity and a sealing ring disposed between the sealing plate and the bottom of the inner cavity, and the limiting plate is located on the inner side of the sealing ring.

In the above-mentioned excess sludge pretreatment device, the bottom of the inner cavity has an annular groove, and the above-mentioned sealing ring is arranged in the annular groove.

In the above residual sludge pretreatment device, a support is arranged at the top of the cylindrical body, the lifting assembly comprises at least two hydraulic cylinders which are fixed on the support and arranged in parallel with each other and a support plate which is fixed on a piston rod of the hydraulic cylinder, and the stirring motor is fixed on the support plate. The number of hydraulic cylinders can be set to 2-4. Besides the hydraulic cylinder, an air cylinder, an oil cylinder and the like can be adopted.

In foretell surplus sludge preprocessing device, the top of tube-shape body is equipped with the support, lifting unit including fix on the support at least three guide posts that are parallel to each other, the deflector of cover on a plurality of guide posts, fix at least three backup pads and fix the pneumatic cylinder in the backup pad with the guide post upper end, the piston rod of pneumatic cylinder links firmly with the deflector, agitator motor fix on the deflector. The number of the guide posts can be 3-4, preferably 4, and the guide posts are respectively positioned at the four corners of the guide plate.

In the above residual sludge pretreatment apparatus, the stirring rod includes a connecting shaft, a plurality of radially extending cross rods disposed at a lower end of the connecting shaft, and an upwardly extending vertical rod disposed at an outer end of the cross rods, and an outer diameter of a circle formed by the plurality of cross rods is smaller than an inner diameter of the inner cavity.

Compared with the prior art, the excess sludge pretreatment device has the following advantages:

the ultrasonic assembly is arranged at the bottom of the inner cavity, the ultrasonic range is expanded through the limiting plate and the sealing plate, the wall breaking effect on sludge is improved, the ultrasonic assembly is easy to position and install, and the structural design is more reasonable; the lifting of the stirring rod is controlled by the lifting component, so that the stirring effect on the sludge is good; only one cylindrical body is arranged, so that resources are saved.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a second embodiment of the present invention.

Fig. 3 is an exploded view of the ultrasonic module according to the present invention.

In the figure, 1, inner cavity; 2. a cylindrical body; 3. an inlet; 4. an outlet; 5. a stirring motor; 6. a stirring rod; 7. mounting holes; 8. a ceramic ultrasound emitting head; 9. a tapered waveguide rod; 10. a fixed block; 11. a fastener; 12. a limiting plate; 13. a limiting blocking edge; 14. a first limiting part; 15. a second limiting part; 16. an insulating layer; 17. mounting grooves; 18. a sealing plate; 19. a seal ring; 20. a support; 21. a hydraulic cylinder; 22. a support plate; 23. a guide post; 24. a guide plate; 25. a cross bar; 26. a vertical rod; 101. red copper electrode sheet; 102. piezoelectric ceramic piece.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

Example one

As shown in fig. 1 surplus sludge pretreatment device, including the tube-shape body 2 that has inner chamber 1, inner chamber 1 is cylindrical, and its bottom surface is the plane, and the upper end has uncovered, and accessible is uncovered when the stirring and to realize further breaking to mud with medicaments such as agent of breaking wall in inner chamber 1, perhaps sets up on the upper portion of tube-shape body 2 and adds the medicine mouth, accessible adds the medicine mouth and to agents such as agent of breaking wall in inner chamber 1. As shown in figure 1, the cylindrical body 2 is provided with an inlet 3 and an outlet 4 which are communicated with the inner cavity 1, the inlet 3 is positioned at the upper part of the cylindrical body 2, the outlet 4 is positioned at the lower part of the cylindrical body 2, and the lowest part of the outlet 4 is not higher than the lowest part of the inner cavity 1, thereby being beneficial to discharging sludge.

As shown in fig. 1, a lifting assembly is arranged above the cylindrical body 2, a stirring rod 6 driven by a stirring motor 5 is arranged on the lifting assembly, and the lower end of the stirring rod 6 extends into the inner cavity 1. Specifically, the stirring rod 6 comprises a connecting shaft coaxially and fixedly connected with a main shaft of the stirring motor 5, 2-4 radial extending transverse rods 25 arranged at the lower end of the connecting shaft and upwards extending vertical rods 26 arranged at the outer ends of the transverse rods 25, the transverse rods 25 are distributed in an annular array, a circle formed by the unfolding of the transverse rods 25 is coaxially arranged with the inner cavity 1, the distance between the vertical rods 26 and the inner wall of the inner cavity 1 is smaller and is 5-10mm, and the complete stirring of sludge is facilitated. When the lifting assembly drives the stirring rod 6 to descend to the lowest position, the cross rod 25 has a gap with the bottom of the inner cavity 1.

As shown in fig. 3, the bottom of the inner cavity 1 is provided with a mounting hole 7, and an ultrasonic assembly is arranged in the mounting hole 7. Specifically, the ultrasonic wave subassembly includes ceramic supersound transmission head 8, toper guided wave stick 9, ceramic piezoelectric vibrator and fixed block 10, and ceramic supersound transmission head 8 is cylindricly, and fixed block 10 is cylindricly, and the big terminal surface of toper guided wave stick 9 supports and leans on the lower terminal surface at ceramic supersound transmission head 8. The ceramic piezoelectric vibrator is composed of n annular red copper electrode sheets 101 and n-1 annular piezoelectric ceramic sheets 102, where n is 3 in this embodiment. The red copper electrode plates 101 and the piezoelectric ceramic plates 102 are arranged at intervals, that is, one piezoelectric ceramic plate 102 is arranged between two adjacent red copper electrode plates 101. The fixing block 10 is provided with a through hole, the fastening piece 11 is a screw, the screw penetrates through the through hole and then sequentially penetrates through the ceramic piezoelectric vibrator, and finally is in threaded connection with a threaded hole in the small end of the conical wave guide rod 9, so that the purpose of fixing the ceramic piezoelectric vibrator is achieved.

The upper end of the ceramic ultrasonic transmitting head 8 is provided with a limiting structure which can limit the ultrasonic assembly from falling off from the mounting hole 7. As shown in fig. 3, the limiting structure includes a limiting plate 12 abutting against the bottom surface of the inner cavity 1, the limiting plate 12 is circular and is coaxial with the ceramic ultrasonic emitter 8, and the limiting plate 12 is made of metal, which is beneficial to ultrasonic conduction. The lower part of the limiting plate 12 is provided with a limiting blocking edge 13, wherein the limiting blocking edge 13 is annular, the large end of the conical wave guiding rod 9 is provided with a first limiting part 14 which extends outwards in the radial direction, the lower end of the limiting blocking edge 13 is provided with a second limiting part 15 which extends to the lower part of the first limiting part 14, and an insulating layer 16 is arranged between the limiting blocking edge 13 and the conical wave guiding rod 9.

Wherein, insulating layer 16 is the rubber circle, separates toper guided wave stick 9 and spacing fender edge 13 completely, and pottery supersound transmission head 8 separates limiting plate 12 completely simultaneously, and limiting plate 12 is uncharged. In order to guarantee the flatness of the bottom of the inner cavity 1, a mounting groove 17 matched with the limiting plate 12 is formed in the bottom of the inner cavity 1, the depth of the mounting groove 17 is equal to the thickness of the limiting plate 12, and the mounting hole 7 is formed in the mounting groove 17.

As shown in fig. 1, a sealing assembly for isolating the ultrasonic assembly from the inner cavity 1 is arranged at the bottom of the inner cavity 1, the sealing assembly comprises a sealing plate 18 attached to the bottom of the inner cavity 1 and a sealing ring 19 arranged between the sealing plate 18 and the bottom of the inner cavity 1, the sealing ring 19 is circular and is arranged coaxially with the limiting plate 12, the sealing plate 18 is made of metal, the wall thickness is 2-5mm, and the limiting plate 12 is located on the inner side of the sealing ring 19. The sealing plate 18 can be tightly attached to the bottom of the inner wall under the action of the gravity of the sludge to realize sealing, or screws are arranged around the sealing plate 18 to fix the sealing plate 18 at the bottom of the inner cavity 1. In order to better position the sealing ring 19, an annular groove is arranged at the bottom of the inner cavity 1, the depth of the annular groove is smaller than the thickness of the sealing ring 19, and the sealing ring 19 is arranged in the annular groove.

In this embodiment, as shown in fig. 1, a support 20 is disposed on the top of the cylindrical body 2, the lifting assembly includes 2-4 parallel hydraulic cylinders 21 fixed on the support 20 and a support plate 22 fixed on the piston rod of the hydraulic cylinders 21, and the stirring motor 5 is fixed on the support plate 22.

The working process of the excess sludge pretreatment device is as follows: the piston rod of the hydraulic cylinder 21 extends out to drive the support plate 22 to move to the highest position, and at the moment, the stirring rod 6 moves to the highest position. The outlet 4 is closed, the inlet 3 is opened, sludge is injected into the inner cavity 1 from the inlet 3, and when the injection amount reaches a specified value, the inlet 3 is closed. Starting the ultrasonic wave component, transmitting the ultrasonic wave generated by the combined action of the red copper electrode plate 101 and the piezoelectric ceramic plate 102 into the inner cavity 1 through the conical wave guide rod 9, the ceramic ultrasonic transmitting head 8, the limiting plate 12 made of metal and the sealing plate 18 made of metal, and breaking the wall of the sludge. And after the ultrasonic assembly works for a period of time, the ultrasonic assembly stops working. Add appointed medicine through uncovered or adding the medicine mouth to inner chamber 1 in, the piston rod shrink of pneumatic cylinder 21 drives backup pad 22 downstream to drive puddler 6 downstream, carry out the stirring from top to bottom to mud, when horizontal pole 25 moved to the minimum, the piston rod stretches out again gradually, and then carries out by supreme stirring down to mud, stirring effect is good.

The ultrasonic wave subassembly is at the during operation, can stir mud simultaneously.

Example two

The structural principle of this embodiment is basically the same as that of the first embodiment, and the difference lies in that, as shown in fig. 2, a support 20 is arranged at the top of the cylindrical body 2, the lifting assembly comprises 3-4 mutually parallel guide posts 23 fixed on the support 20, a guide plate 24 sleeved on the plurality of guide posts 23, a support plate 22 fixed at the upper ends of the guide posts 23, and a hydraulic cylinder 21 fixed on the support plate 22, a piston rod of the hydraulic cylinder 21 is fixedly connected with the guide plate 24, and the stirring motor 5 is fixed on the guide plate 24. The number of the guide posts 23 is 4, and the guide posts are respectively positioned at four corners of the guide plate 24.

EXAMPLE III

The structure principle of this embodiment is basically the same as that of embodiment one, and the difference lies in, sets up a plurality of mounting holes 7 at the bottom of inner chamber 1, all sets up an ultrasonic component in every mounting hole 7, keeps apart a plurality of ultrasonic components and inner chamber 1 through a great sealing plate 18.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. A surplus sludge pretreatment device comprises a cylindrical body (2) with an inner cavity (1), wherein an inlet (3) and an outlet (4) which are communicated with the inner cavity (1) are formed in the cylindrical body (2), and the surplus sludge pretreatment device is characterized in that a lifting assembly is arranged above the cylindrical body (2), a stirring rod (6) driven by a stirring motor (5) is arranged on the lifting assembly, and the lower end of the stirring rod (6) extends into the inner cavity (1); the bottom of inner chamber (1) is equipped with mounting hole (7), mounting hole (7) in be equipped with the ultrasonic wave subassembly, the bottom of inner chamber (1) still is equipped with the seal assembly who is used for keeping apart ultrasonic wave subassembly and inner chamber (1).

2. The excess sludge pretreatment device of claim 1, wherein the ultrasonic assembly comprises a ceramic ultrasonic emitter head (8), a conical guided wave rod (9), a ceramic piezoelectric vibrator and a fixing block (10), the large end face of the conical guided wave rod (9) abuts against the lower end face of the ceramic ultrasonic emitter head (8), the fixing block (10) fixes the ceramic piezoelectric vibrator on the small end face of the conical guided wave rod (9) through a fastener (11), and the upper end of the ceramic ultrasonic emitter head (8) is provided with a limiting structure.

3. The excess sludge pretreatment device of claim 2, wherein the limiting structure comprises a limiting plate (12) abutting against the bottom surface of the inner cavity (1), a limiting blocking edge (13) is arranged at the lower part of the limiting plate (12), a first limiting part (14) extending radially outwards is arranged at the large end of the conical wave guide rod (9), a second limiting part (15) extending to the position below the first limiting part (14) is arranged at the lower end of the limiting blocking edge (13), and an insulating layer (16) is arranged between the limiting blocking edge (13) and the conical wave guide rod (9).

4. The excess sludge pretreatment device according to claim 3, wherein the bottom of the inner cavity (1) is provided with a mounting groove (17) matched with the limiting plate (12), and the mounting hole (7) is arranged in the mounting groove (17).

5. The excess sludge pretreatment device according to claim 3, wherein the sealing assembly comprises a sealing plate (18) abutting against the bottom of the inner chamber (1) and a sealing ring (19) arranged between the sealing plate (18) and the bottom of the inner chamber (1), and the limiting plate (12) is positioned inside the sealing ring (19).

6. The excess sludge pretreatment device according to claim 5, wherein the bottom of the inner chamber (1) has an annular groove, and the sealing ring (19) is disposed in the annular groove.

7. The excess sludge pretreatment device according to claim 1, wherein a support (20) is provided at the top of the cylindrical body (2), the lifting assembly comprises at least two hydraulic cylinders (21) fixed on the support (20) and arranged in parallel with each other, and a support plate (22) fixed on a piston rod of the hydraulic cylinder (21), and the stirring motor (5) is fixed on the support plate (22).

8. The excess sludge pretreatment device according to claim 1, wherein a support (20) is arranged at the top of the cylindrical body (2), the lifting assembly comprises at least three guide posts (23) which are fixed on the support (20) and are parallel to each other, a guide plate (24) which is sleeved on the guide posts (23), a support plate (22) which is fixed at the upper ends of the at least three guide posts (23), and a hydraulic cylinder (21) which is fixed on the support plate (22), a piston rod of the hydraulic cylinder (21) is fixedly connected with the guide plate (24), and the stirring motor (5) is fixed on the guide plate (24).

9. The excess sludge pretreatment device according to claim 1, wherein the stirring rod (6) comprises a connecting shaft, a plurality of radially extending cross rods (25) arranged at the lower end of the connecting shaft, and an upwardly extending vertical rod (26) arranged at the outer end of the cross rods (25), and the outer diameter of a circle formed by unfolding the cross rods (25) is smaller than the inner diameter of the inner cavity (1).