CN218860539U

CN218860539U - Utilize filter-pressing dewatering device of sewage treatment plant mud production nutrition soil

Info

Publication number: CN218860539U
Application number: CN202223324048.7U
Authority: CN
Inventors: 伍贤伟; 刘敏; 黄鼎越
Original assignee: Guangxi Xinshuozhan Environmental Protection Technology Co ltd
Current assignee: Guangxi Xinshuozhan Environmental Protection Technology Co ltd
Priority date: 2022-12-12
Filing date: 2022-12-12
Publication date: 2023-04-14
Anticipated expiration: 2032-12-12

Abstract

A filter-pressing dehydration device for producing nutrient soil by utilizing sludge of a sewage treatment plant comprises a frame-shaped support, hydraulic cylinders and a filter-pressing plate, wherein a feeding plate is vertically arranged at one end of the frame-shaped support, a feeding channel of the feeding plate is connected with a slurry pump through a slurry conveying pipe, filter cloth with a tunnel-type feeding lug is covered and installed on the feeding plate, a pushing plate which is suspended and installed on the frame-shaped support through a pushing plate suspension lug, a roller and an installation shaft is suspended and installed on the frame-shaped support, and the pushing plate is pushed by the two hydraulic cylinders which are horizontally arranged; a plurality of elastic pressure filter plates are installed on the frame-shaped bracket between the sealing pressure plate and the feeding plate in a spanning and hanging manner through hanging lugs, rollers and installation shafts, a through hole for passing slurry is formed in the middle of each elastic pressure filter plate, filter cloth with tunnel-type feeding lugs is installed on two sides of each elastic pressure filter plate in a covering manner, and the tunnel-type feeding lugs are installed in the through holes in a limiting manner; the installation shafts are connected with a linkage inhaul cable. The filter-pressing dewatering device has the advantages of large filter-pressing pressure, good dewatering effect and long service life.

Description

Utilize filter-pressing dewatering device of sewage treatment plant mud production nutrition soil

Technical Field

The utility model relates to a sludge dewatering's technical field, concretely relates to utilize filter-pressing dewatering device of sewage treatment plant sludge production nutrition soil.

Background

Domestic sewage is wastewater discharged in daily life of residents and mainly comes from residential buildings and public buildings, such as houses, institutions, schools, hospitals, shops, public places, industrial enterprise toilets and the like. The pollutants contained in the domestic sewage are mainly organic matters and a large number of pathogenic microorganisms. Organic matters existing in domestic sewage are extremely unstable and easily decomposed to generate offensive odor. Bacteria and pathogens propagate in large quantities by taking organic matters in domestic sewage as nutrients, so that infectious diseases can spread. Therefore, domestic sewage must be treated before being discharged, a large amount of sludge is generated in the later period of sewage treatment, and the sludge contains a large amount of water and cannot be directly treated.

In order to reduce the water content of the sludge, a large-scale sewage dehydration treatment system is designed for a large-scale enterprise with conditional conditions, however, the large-scale sewage dehydration treatment system has high investment cost and long return on investment period, and is not suitable for small-scale enterprises. Application investigation and research show that at present, small and medium-sized enterprises generally adopt a plate-and-frame filter press to mechanically squeeze and dewater sludge. The plate-and-frame filter press as solid-liquid separation equipment is characterized by that it utilizes a holddown device to hold down the filter plate, then uses the suspension liquid to be pumped into the filter chamber, and utilizes the filter cloth to attain the goal of separating solid particles from liquid particles.

However, the volume of the filter pressing chamber of the traditional plate-and-frame filter press is fixed, and the filter pressing pressure is determined by the conveying pressure of the sludge conveying pump, and is generally 0.6-1.6Mpa. The diaphragm filter press with better effect carries out secondary filter pressing on the filter pressing cavity through the air diaphragm after the sludge is conveyed and filter pressed, and the dehydration effect is not substantially improved because the displacement of the diaphragm is small, the displacement of the diaphragm plate is small, the service life of the diaphragm plate is short, the replacement is frequent, the cost is higher, and the pressure of compressed air is approximately the same as that of a sludge pump. Researches show that the sludge contains a large amount of organic matters and a plurality of trace elements, and if the sludge is dehydrated and fermented, the sludge can become nutrient soil for crop planting, but because the water content of the sludge is high, the water content is difficult to reduce by the dehydration of the traditional plate-and-frame filter press, and a large amount of auxiliary materials are required to be added, so that the production requirement can be met. Therefore, a dewatering device which has the advantages of low investment cost, convenient operation and maintenance and good filter pressing effect and is beneficial to producing nutrient soil after filter pressing and dewatering of sludge is urgently needed.

Disclosure of Invention

The utility model aims at providing an utilize sewage treatment plant sludge production nutrient soil's filter-pressing dewatering device, this sludge filter-pressing dewatering device filter-pressing pressure is big, and dewatering effect is good, convenient operation, and long service life.

In order to realize the purpose of the utility model, the technical scheme who takes is:

a filter-pressing dehydration device for producing nutrient soil by utilizing sludge of a sewage treatment plant comprises a frame-shaped support, a hydraulic cylinder and an elastic filter-pressing plate, wherein a feeding plate is vertically arranged at one end of the frame-shaped support, a feeding channel is arranged in the middle of the feeding plate, the feeding channel is connected with a slurry pump through a slurry conveying pipe, filter cloth is covered and installed on the side, away from the slurry pump, of the feeding plate, a tunnel-type feeding lug is arranged in the middle of the filter cloth, and the tunnel-type feeding lug is installed in the feeding channel through a check ring for holes; a pushing plate is mounted on the frame-shaped bracket in a hanging manner and comprises a sealing pressing plate, two ends of the sealing pressing plate are respectively provided with a pushing plate hanging lug, and a mounting shaft supported on the frame-shaped bracket in a crossing manner through a roller is mounted between the two pushing plate hanging lugs; two sides of the pushing plate are respectively provided with a connecting seat, the connecting seats on the two sides are correspondingly connected with the piston shaft ends of the two hydraulic cylinders, the cylinder seats of the two hydraulic cylinders are respectively connected with the frame-shaped bracket through cylinder seat connecting lugs, and the two hydraulic cylinders are horizontally arranged; the filter press comprises a frame-shaped support, a sealing press plate, a feed plate, a plurality of elastic press filter plates, a mounting shaft, a boss, a sealing frame, a plurality of pressure springs, a through hole and a check ring, wherein the frame-shaped support between the sealing press plate and the feed plate is provided with a plurality of elastic press filter plates in a spanning and hanging manner, two sides of each elastic press filter plate are covered and provided with filter cloth with a tunnel-type feeding lug; and a linkage inhaul cable is connected between two adjacent mounting shafts.

Further preferred is: the filter-pressing plate body on install the pressure spring guide holder through installation ear and connecting bolt connection, be provided with the pressure spring guiding hole on the pressure spring guide holder, the pressure spring is worn to establish in the pressure spring guiding hole, the setting of pressure spring guide holder can support spacing pressure spring, avoids the compression in-process bending deformation of pressure spring.

Further preferably: the extrusion surface of the boss is provided with a plurality of anti-skidding concave pits, so that the filter cloth can be prevented from shifting in the extrusion process, and the filter cloth can be prevented from shifting in the extrusion process.

Further preferred is: the sealing surface of the sealing pressure plate is provided with a plurality of anti-skidding concave pits, and the sealing surface of the sealing pressure plate is covered with filter cloth.

Further preferably: the meshes of the filter cloth are 110-150 meshes.

Further preferably: the mud conveying pipe is provided with a pressure gauge, and the pressure gauge can display the pressure of the mud conveying pipe.

Compared with the traditional filter press, the filter-pressing dehydration device for producing nutrient soil by utilizing the sludge of the sewage treatment plant has the advantages that the volume of the filter-pressing cavity of the traditional plate-and-frame filter press is fixed, and the filter-pressing pressure is determined by the conveying pressure of the sludge conveying pump; the diaphragm filter press with better effect carries out secondary filter pressing on the filter pressing cavity through the air diaphragm after sludge is conveyed and filter pressed, and the diaphragm has small displacement, short service life, frequent replacement and high cost. The filter-pressing dehydration device for producing the nutrient soil by utilizing the sludge of the sewage treatment plant has the advantages of low mechanical energy consumption, convenient use, stable performance and long service life, and through the design and application of the elastic filter-pressing plate, the filter-pressing cavity of the filter-pressing can be easily further compressed, the moisture of the sludge in the cavity is further extruded, the sludge dehydration effect is better improved, and the defects of low pressure, poor dehydration effect and the like of the traditional filter press are better overcome; after the filter pressing dehydration device is adopted for dehydration, the nutrient soil can be directly stacked in a light-transmitting shed for natural fermentation production.

Drawings

FIG. 1 is a schematic view showing a connection structure of a filter-press dehydration apparatus for producing nutrient soil using sludge from a sewage treatment plant;

FIG. 2 is a schematic top view of the filter press dewatering device of FIG. 1;

FIG. 3 is a schematic left side view of the pressure filter dewatering apparatus of FIG. 1;

fig. 4 is a schematic structural view of the elastic pressure filter plate;

fig. 5 is an exploded view of the elastic pressure-filtering plate;

fig. 6 is a schematic cross-sectional view of the elastic pressure-filtering plate;

FIG. 7 is a schematic structural view of a feed plate;

FIG. 8 is a schematic cross-sectional view of a feed plate;

FIG. 9 is a schematic view of the construction of the pusher plate;

the names corresponding to the sequence numbers in the figure are:

1. a frame-shaped support; 2. a cylinder base connecting lug; 3. a hydraulic cylinder; 4. a slurry pump; 5. a slurry conveying pipe; 6. a pressure gauge; 7. a feeding plate; 8. an elastic filter pressing plate; 9. a roller; 10. installing a shaft; 11. a linkage cable; 12. a push plate; 13. a connecting seat; 14. filtering cloth; 15. a sealing frame; 16. a pressure spring; 17. a pressure spring guide seat; 18. hanging a lifting lug; 19. mounting ears; 20. pressing and filtering the plate body; 21. a tunnel-type feeding lug 22, an anti-slip pit; 23. a boss; 24. a pressure spring guide hole; 25. a connecting bolt; 26. a via hole; 27. a retainer ring for a bore; 28. a feed channel; 29. sealing the pressure plate; 30. the push plate suspends a lifting lug; 31. and (5) adjusting the tank.

Detailed Description

In order to make the technical solutions and advantages of the present application clearer, the following describes the technical solutions clearly and completely in combination with the embodiments.

Example 1

A filter-pressing dehydration device for producing nutrient soil by utilizing sludge of a sewage treatment plant comprises a frame-shaped support 1, a hydraulic cylinder 3 and an elastic filter-pressing plate 8, wherein a feeding plate 7 is vertically arranged at one end of the frame-shaped support 1, a feeding channel 28 is arranged in the middle of the feeding plate 7, the feeding channel 28 is connected with a slurry pump 4 through a slurry conveying pipe 5, a pressure gauge 6 is arranged on the slurry conveying pipe 5, and slurry needing filter-pressing is pumped into the feeding channel 28 by the slurry pump 4 through the slurry conveying pipe 5; the side, far away from the mud pump 4, of the feeding plate 7 is covered and provided with a filter cloth 14, the middle part of the filter cloth 14 is provided with a tunnel type feeding lug 21, and the tunnel type feeding lug 21 is arranged in a feeding channel 28 through a hole retainer ring 27; a pushing plate 12 is mounted on the frame-shaped bracket 1 in a hanging manner, the pushing plate 12 comprises a sealing pressing plate 29, two ends of the sealing pressing plate 29 are respectively provided with a pushing plate hanging lug 30, and a mounting shaft 10 which is supported on the frame-shaped bracket 1 in a crossing manner through a roller 9 is mounted between the two pushing plate hanging lugs 30; two sides of the pushing plate 12 are respectively provided with a connecting seat 13, the connecting seats 13 on the two sides are correspondingly connected with the piston shaft ends of the two hydraulic cylinders 3, the cylinder seats of the two hydraulic cylinders 3 are respectively connected with the frame-shaped bracket 1 through cylinder seat connecting lugs 2, the two hydraulic cylinders 3 are horizontally arranged, the hydraulic cylinders 3 are connected with a hydraulic control system, and the hydraulic cylinders 3 are controlled by the control system to work; a plurality of elastic pressure filter plates 8 are transversely mounted in a cross-suspension manner on the frame-shaped support 1 between the sealing pressure plate 29 and the feeding plate 7, filter cloth 14 with tunnel-type feeding lugs 21 is mounted on two surfaces of each elastic pressure filter plate 8 in a covering manner, each elastic pressure filter plate 8 comprises a sealing frame 15 and a pressure filter plate body 20, two sides of each pressure filter plate body 20 are respectively provided with a suspension lifting lug 18, a mounting shaft 10 supported on the frame-shaped support 1 through a roller 9 in a cross manner is mounted between the two suspension lifting lugs 18, a boss 23 is arranged in the middle of each pressure filter plate body 20, the sealing frame 15 is framed at the periphery of the boss 23 far away from the end of each pressure filter plate body 20, a plurality of pressure springs 16 are uniformly connected between the sealing frame 15 and the pressure filter plate bodies 20, a through hole 26 is arranged in the middle of each boss 23, and the tunnel-type feeding lugs 21 of the filter cloth 14 on two sides are mounted in the through hole retaining rings 27; and a linkage inhaul cable 11 is connected between two adjacent mounting shafts 10.

Example 2

The difference from example 1 is characterized in that: the filter pressing plate body 20 is connected with and installed with a pressure spring guide seat 17 through an installation lug 19 and a connecting bolt 25, a pressure spring guide hole 24 is arranged on the pressure spring guide seat 17, and the pressure spring 16 penetrates through the pressure spring guide hole 24.

The extrusion surface of the boss 23 is provided with a plurality of anti-slip concave pits 22.

The sealing surface of the sealing pressure plate 29 is provided with a plurality of anti-skid pits 22, and the sealing surface of the sealing pressure plate 29 is covered with filter cloth.

The working principle of the filter-pressing dehydration device for producing the nutrient soil by utilizing the sludge of the sewage treatment plant is as follows: the method comprises the following steps of (1) passing a slurry conveying pipe 5 to the bottom of an adjusting tank 31, conveying slurry obtained by precipitation separation of a sewage treatment plant into the adjusting tank 31, adding an active agent to mix with the slurry, wherein the active agent accounts for 3-5% of the total weight, the active agent comprises plant ash and roasting soil, the weight ratio of the plant ash to the roasting soil is 1, the plant ash is biomass boiler ash, and the roasting soil is crushed by waste bricks and unqualified bricks and then is sieved by an 80-mesh sieve for use. The hydraulic control system works to disclose that the piston shafts of the hydraulic cylinders 3 at two sides retract, the push plate 12 is pulled to move forward by taking the roller 9 as a supporting point, a plurality of elastic press filter plates 8 are pushed to fold, the elastic press filter plate 8 at the forefront end is attached to the feed plate 7, the pressure is about 10Mpa, a press filter chamber is formed between the boss 23 of the elastic press filter plate 8 at the forefront end and the feed plate 7, a press filter chamber is also formed between the boss 23 of the elastic press filter plate 8 at the rear side and the back of the press filter plate body 20 of the elastic press filter plate 8 at the front side, the slurry pump 4 works to pump slurry into the press filter chamber from the feed channel 28 of the feed plate 7, primary press filter is carried out by the pumped pressure, filtrate passes through the filter cloth 14 from the gap between the sealing frame 15 and the boss 23 and drips downwards, when the pumped pressure reaches a set value, the slurry pump 4 stops working, the hydraulic control system works again, the piston shaft of the hydraulic control system continuously retracts to enable the push plate 12 to continuously push the elastic press filter plates 8 forward, the pressure is extruded by the pressure as high as possible to be up to the pressure of the filter plates 16, the boss 23 moves forwards, the boss moves relative to be displaced to the sealing frame 15 Mpa, and further extrude more sludge in the press filter chamber, and more sludge in the secondary sludge in the press filter chamber. After the secondary filter pressing is completed, the hydraulic control system works, the hydraulic cylinder 5 works, the pushing plate 12 and the elastic filter pressing plate 12 are pushed to separate, the pressure spring 16 drives the sealing frame 15 to reset, due to the action of the linkage inhaul cable 11, the elastic filter pressing plates 12 at the front end are also separated for one time, the elastic filter pressing plate 12 at the front end is separated from the feeding plate 7, a sludge filter cake drops downwards and is collected, a batch of sludge filter pressing is completed, the water content of sludge after filter pressing and dehydration is lower than 60%, sludge compost treatment is carried out in a light-transmitting shed, and the compost can be used as nutrient soil after being treated. And repeating the steps to filter-press the sludge of the next batch.

The above description is not intended to limit the present application, and the present application is not limited to the above examples, and those skilled in the art should understand that they can make various changes, modifications, additions and substitutions within the spirit and scope of the present application.

Claims

1. The utility model provides an utilize filter-pressing dewatering device of sewage treatment plant mud production nutrition soil, includes frame type support (1), pneumatic cylinder (3) and elasticity filter-pressing board (8), its characterized in that: one end of the frame-shaped support (1) is vertically provided with a feeding plate (7), the middle of the feeding plate (7) is provided with a feeding channel (28), the feeding channel (28) is connected with a slurry pump (4) through a slurry conveying pipe (5), the side, far away from the slurry pump (4), of the feeding plate (7) is covered and provided with filter cloth (14), the middle of the filter cloth (14) is provided with a tunnel-type feeding lug (21), and the tunnel-type feeding lug (21) is arranged in the feeding channel (28) through a retainer ring (27) for holes; a pushing plate (12) is installed on the frame-shaped support (1) in a hanging mode, the pushing plate (12) comprises a sealing pressing plate (29), two pushing plate hanging lugs (30) are arranged at two ends of the sealing pressing plate (29) respectively, and an installation shaft (10) which is supported on the frame-shaped support (1) in a crossing mode through a roller (9) is installed between the two pushing plate hanging lugs (30); two sides of the pushing plate (12) are respectively provided with a connecting seat (13), the connecting seats (13) on the two sides are correspondingly connected with the piston shaft ends of the two hydraulic cylinders (3), the cylinder seats of the two hydraulic cylinders (3) are respectively connected with the frame-shaped bracket (1) through cylinder seat connecting lugs (2), and the two hydraulic cylinders (3) are horizontally arranged; the filter press comprises a frame-shaped support (1) between a sealing pressure plate (29) and a feeding plate (7), wherein a plurality of elastic filter press plates (8) are transversely arranged in a cross-over and suspended mode on the frame-shaped support (1) between the sealing pressure plate (29) and the feeding plate (7), filter cloth (14) with tunnel-type feeding lugs (21) is covered and mounted on two sides of each elastic filter press plate (8), each elastic filter press plate (8) comprises a sealing frame (15) and a filter press plate body (20), two sides of each filter press plate body (20) are respectively provided with a suspended lifting lug (18), an installation shaft (10) supported on the frame-shaped support (1) in a crossing mode through a roller (9) is mounted between the two suspended lifting lugs (18), a boss (23) is arranged in the middle position of each filter press plate body (20), the sealing frame (15) is framed at the periphery of the boss (23) far away from the end of each filter press plate body (20), a plurality of pressure springs (16) are uniformly connected between the sealing frame (15) and the filter press plate bodies (20), a through hole (26) is formed in the middle position of each boss (23), and the tunnel-type feeding lugs (21) of the filter cloth (14) on two sides are mounted in the through a retainer ring (27) for the through hole; and a linkage inhaul cable (11) is connected between two adjacent mounting shafts (10).

2. The filter-pressing dehydration device for producing nutrient soil by using sludge of sewage treatment plant according to claim 1, characterized in that: the filter pressing plate body (20) on install pressure spring guide holder (17) through installation ear (19) and connecting bolt (25) connection, be provided with pressure spring guiding hole (24) on pressure spring guide holder (17), pressure spring (16) wear to establish in pressure spring guiding hole (24).

3. The filter-pressing dehydration device for producing nutrient soil by using sludge of sewage treatment plant according to claim 1, characterized in that: the extrusion surface of the boss (23) is provided with a plurality of anti-skid concave pits (22).

4. The filter-pressing dehydration plant for producing nutrient soil using sludge of sewage treatment plant according to claim 1, wherein: the sealing surface of the sealing pressure plate (29) is provided with a plurality of anti-skidding pits (22), and the sealing surface of the sealing pressure plate (29) is covered with filter cloth.

5. The filter-pressing dehydration device for producing nutrient soil by using sludge of sewage treatment plant according to claim 1, characterized in that: and a pressure gauge (6) is arranged on the slurry conveying pipe (5).