Sludge compressor

Abstract

The utility model discloses a kind of sludge compressors, including compressor main body, the compressor main body is cylindrical structure, compression cavity is provided in the compressor main body, the compression cavity one end is provided with feed inlet, the other end is provided with discharge port, compression part is provided in the compression cavity;The compression part includes multiple parallelly arranged helical shafts, the helical shaft is arranged along the length direction of the compression cavity, the compression cavity inside is provided with filter screen, the compressor main body is equipped with the drain hole of the water hole of the compressor main body shell, three helical shafts are provided in the compression cavity in the application, the cooperative rotation of multiple groups of scraper and scraper plate on three helical shafts, the dynamic phase difference adjustment between helical shafts is combined, realize the sufficient stirring and uniform compression of sludge in cavity, significantly improve the uniformity and compression effect of dehydration.

Description

Technical Field

[0001] This utility model relates to the technical field of sludge solid-liquid separation equipment, specifically a sludge compressor. Background Technology

[0002] With rapid urbanization and industrialization, wastewater treatment scale is constantly expanding, leading to a significant increase in sludge production. Sludge, a crucial byproduct of wastewater treatment, is characterized by high water content and large volume. Improper handling not only occupies significant space but can also cause secondary environmental pollution. Traditional sludge pressing equipment often employs single-spiral or double-spiral structures. Due to the limited number of spiral shafts, the material in the working chamber experiences uneven stress, easily causing localized blockages when processing high-viscosity or easily agglomerated sludge. Furthermore, rigid or easily deformable filter screens are prone to clogging and wear during long-term operation, affecting solid-liquid separation efficiency.

[0003] Currently, the main equipment for thickening, dewatering, and drying urban sewage sludge and livestock farm and septic tank sludge includes plate and frame filters and screw press filters, but they generally suffer from limited dewatering effects. Utility Model Content

[0004] The purpose of this invention is to provide a sludge compressor to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A sludge compressor includes a compressor body, which is cylindrical in shape. A compression chamber is provided inside the compressor body. One end of the compression chamber is provided with a feed inlet and the other end is provided with a discharge outlet. A compression section is provided inside the compression chamber.

[0007] The compression section includes multiple parallel spiral shafts arranged along the length of the compression cavity. A filter screen is provided inside the compression cavity, and a drain hole penetrating the compressor body is provided on the compressor body housing.

[0008] As a further embodiment of this utility model: the length of the compression cavity is 1000mm, and the inner diameter of the compression cavity is 400mm.

[0009] As a further embodiment of this utility model: the filter screen is an elastic variable cross-section filter screen, the thickness of the filter screen is 2mm, and filter holes are uniformly arranged on the filter screen, the pore size of the filter holes is in the range of 50μm to 150μm.

[0010] As a further embodiment of this utility model: the spiral shaft includes a first spiral shaft, a second spiral shaft, and a third spiral shaft arranged in parallel, the center lines of the first spiral shaft, the second spiral shaft, and the third spiral shaft are arranged in an equilateral triangle, and the distance between the three spiral shafts is 200mm.

[0011] As a further embodiment of this utility model: a spiral blade is provided on the spiral shaft, the spiral blade has a width of 30mm, a pitch of 150mm, and a blade thickness of 8mm, and a scraper is installed on the outside of the spiral shaft, the scraper being an arc-shaped scraper.

[0012] As a further embodiment of this utility model: one end of the compressor body is provided with a power unit for driving the spiral shaft. The power unit includes a drive motor. The first spiral shaft, the second spiral shaft, and the third spiral shaft are all connected to independently arranged drive motors. The drive motor is provided with a controller for controlling the rotation of the drive motor. At least one of the first spiral shaft, the second spiral shaft, and the third spiral shaft is poweredly connected to the drive motor through a bearing seat and an eccentric wheel.

[0013] As a further embodiment of this utility model: a base support is provided at one end of the compressor body, and the base support is connected to the compressor body through a vibration spring, the spring stiffness of which is 500N / m.

[0014] As a further embodiment of this utility model: a water collection tank is provided at the lower part of the compressor body, a guide pipe is provided at the upper end of the water collection tank, the guide pipe is located below the compression cavity, a water accumulation channel is provided on the inner wall of the compressor body, a drain hole is located at the water accumulation channel, and a regulating valve is provided at the drain hole.

[0015] As a further embodiment of this utility model: a backflush air pump is provided on one side of the compressor body, and a backflush air pipe is provided on the outside of the filter screen, and the backflush air pipe is connected to the backflush air pump.

[0016] As a further embodiment of this utility model: the inner wall of the compressor body is provided with a plurality of guide vanes, the guide vanes being located at one end near the feed inlet.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This application achieves full mixing and uniform compression of sludge in the chamber by setting three spiral shafts in the compression chamber, and the coordinated rotation of multiple sets of scrapers and scrapers on the three spiral shafts, combined with the dynamic phase difference adjustment between the spiral shafts, which significantly improves the uniformity of dewatering and the compression effect.

[0019] 2. This application features an elastic variable cross-section filter screen, which can effectively filter water and improve the dewatering effect of sludge. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the compressor structure in this embodiment;

[0021] Figure 2 , Figure 3 This is a schematic diagram of the spiral compression section structure in this embodiment;

[0022] Figure 4 This is a schematic diagram of the filter structure in this embodiment.

[0023] In the diagram: 1-Compressor body, 2-Compression chamber, 3-Suspension point, 4-Filter screen, 5-Filter holes, 6A-First spiral shaft, 6B-Second spiral shaft, 6C-Third spiral shaft, 7-Drive motor, 8-Controller, 9-Base support, 10-Vibration spring, 11-Scraper, 12-Water collection channel, 13-Drain hole, 14-Bearing seat, 15-Eccentric wheel, 16-Water collection tank, 17-Guide pipe, 18-Regulating valve, 19-Backflush air pump, 20-Motor controller, 21-Inlet, 22-Outlet, 23-Sensor, 24-Guide vane, 25-Backflush air pipe. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-4 In this embodiment of the utility model, a sludge compressor includes a compressor body 1, which is a steel cylindrical structure. A compression chamber 2 is provided inside the compressor body 1. The length of the compression chamber 2 is 1000mm and the inner diameter of the compression chamber 2 is 400mm.

[0026] The compression chamber 2 has an inlet 21 at one end and an outlet 22 at the other end. The inner wall of the compressor body 1 is provided with multiple guide vanes 24. The guide vanes 24 are located at the end near the inlet 21. The spacing between the guide vanes 24 is 20mm, and the vane size is 15mm×10mm. They help guide the sludge flow and achieve uniform compression.

[0027] A compression section is provided inside the compression chamber 2. The compression section includes multiple parallel spiral shafts arranged along the length of the compression chamber 2. In this embodiment, the spiral shafts include a first spiral shaft 6A, a second spiral shaft 6B, and a third spiral shaft 6C arranged in parallel. The centerlines of the first spiral shaft 6A, the second spiral shaft 6B, and the third spiral shaft 6C are arranged in an equilateral triangle. The distance between the three shafts is 200mm. Spiral blades are provided on the spiral shafts. The width of the spiral blades is 30mm, the pitch is 150mm, and the blade thickness is 8mm. A scraper 11 is installed on the outside of the spiral shaft. The scraper 11 is an arc-shaped scraper used to scrape off the sludge adhering to the filter screen.

[0028] One end of the compressor body 1 is provided with a power unit for driving the spiral shafts. The power unit includes a drive motor 7. The first spiral shaft 6A, the second spiral shaft 6B, and the third spiral shaft 6C are each connected to an independently arranged drive motor 7. The drive motor 7 is provided with a controller 8 for controlling the rotation of the drive motor 7. One end of the compressor body 1 is provided with a base support 9. The base support 9 is connected to the compressor body 1 through a vibration spring 10. The spring stiffness of the vibration spring 10 is 500 N / m, which can withstand axial and radial loads. At least one of the first spiral shaft 6A, the second spiral shaft 6B, and the third spiral shaft 6C is poweredly connected to the drive motor 7 through a bearing seat 14 and an eccentric wheel 15. In this embodiment, the first spiral shaft 6A is poweredly connected to the drive motor 7 through a bearing seat 14. A set of eccentric wheels 15 are installed below the bearing seat 14. The eccentric wheels 15 have a diameter of about 30 mm and an eccentric distance of about 1 mm. This allows the first spiral shaft 6A to rotate while also generating a micro-vibration with a frequency of about 50 Hz and an amplitude of about 0.2-0.5 mm brought by the eccentric wheels.

[0029] The first spiral shaft 6A, the second spiral shaft 6B, and the third spiral shaft 6C can rotate clockwise and counterclockwise according to the actual situation. The rotation speed of the three spiral shafts will be different to form a dynamic phase difference. The scraper 11 rotates with the spiral shaft and is in close contact with the surface of the filter screen 4 during the rotation process. It continuously and substantially scrapes the filter screen and generates actual vibration effect on the filter screen 4 to prevent the filter screen from clogging.

[0030] The compression chamber 2 is equipped with a filter screen 4, which is an elastic variable cross-section filter screen. The elastic variable cross-section filter screen 4 is made of high molecular composite material and has a thickness of about 2 mm. The elastic variable cross-section filter screen 4 has multiple filter holes 5. The pore size of the filter holes 5 can be automatically adjusted according to the compression pressure in the chamber, and the adjustment range is 50 μm to 150 μm.

[0031] The compressor body 1 has a drain hole 13 that penetrates the housing of the compressor body 1. A water collection tank 16 is provided at the lower part of the compressor body 1. The water collection tank 16 has an inverted trapezoidal structure that is wider at the top and narrower at the bottom. A set of guide pipes 17 are installed on each of the two sides above the water collection tank 16. A water accumulation channel 12 is provided on the inner wall of the compressor body 1. The drain hole 13 is located at the water accumulation channel 12. The drain hole 13 is provided with a regulating valve 18. The guide pipes 17 are connected to the drain hole and the water collection channel at the rear end.

[0032] A backflush air pump 19 is provided on one side of the compressor body 1, and a backflush air pipe 25 is provided on the outside of the filter screen 4. The backflush air pipe 25 is connected to the backflush air pump 19.

[0033] The front end of the overall device is also equipped with a control device 20. The control device 20 is designed as an integrated cabinet. The control device 20 is equipped with multiple sets of sensors 23. The signal system of the sensors 23, drive motor 7 and controller 8 are linked to achieve dynamic optimization and continuous stable operation of the compression process. The specific control is a common technical means in this field, which will not be described in detail here.

[0034] In use, this invention efficiently dewaters sludge from the primary sedimentation tank. The sludge is transported from different directions to the compression chamber of the dewatering equipment through multiple sets of feed pipes. To ensure uniform distribution of the sludge within the chamber, the sludge first flows through annularly arranged guide vanes before entering the compression chamber. The guide vanes effectively disperse the sludge flow, preventing sludge from accumulating on one side, thus ensuring that the sludge is evenly spread around the inner wall of the entire chamber. This uniform distribution provides a good material foundation for the subsequent compression and dewatering processes.

[0035] After the sludge enters the chamber, the three independently driven spiral shafts start synchronously. Each spiral shaft is driven by an independent motor, and the speed and direction of rotation can be adjusted independently. By setting a specific phase difference, dynamic misalignment movement is achieved, which promotes three-dimensional stirring of the sludge in the space and avoids material dead corners and agglomeration.

[0036] The spiral blades are made of wear-resistant alloy material and have a special surface treatment to prevent sludge adhesion and to provide good corrosion resistance and mechanical stability. The blades push the sludge along the axial direction and gradually apply pressure towards the outlet of the cavity, so that the volume of the sludge is continuously reduced, thus achieving continuous and efficient compression in the process.

[0037] As the sludge is propelled and agitated by the spiral blades, its structure is continuously broken down, the gaps between particles become smaller, and water is gradually squeezed out. This process requires the equipment to operate continuously and uniformly to ensure that the compression effect and dewatering quality meet the design requirements.

[0038] The water generated during sludge compression is discharged through an elastic filter screen installed on the inner wall of the chamber. The filter screen is made of a variable cross-section elastic material, which can automatically adjust the pore size according to changes in the internal pressure. The specific mechanism is as follows: when the internal pressure increases, the filter screen pores automatically shrink to block solid particles from passing through, while maximizing the discharge of water to ensure solid-liquid separation; when the internal pressure decreases, the filter pores automatically expand to adapt to changes in sludge flow and properties, ensuring smooth drainage.

[0039] The discharged water gathers in the water collection channel located on the inner wall of the cavity, flows into the guide pipe through the drain hole, and finally enters the water collection tank. The drain pipe is equipped with an intelligent regulating valve, which dynamically adjusts the opening according to real-time data from pressure and flow sensors to ensure stable drainage pressure, detect the flow rate and direction of water flow, prevent backflow and pipe blockage, and achieve stable and continuous discharge of sewage.

[0040] To prevent filter clogging, the equipment is designed with an arc-shaped scraper and an eccentric wheel micro-vibration device. The arc-shaped scraper is in close contact with the filter surface and rotates synchronously with the filter to continuously scrape off sludge and maintain the filter's permeability. The eccentric wheel is mounted on a spiral shaft and generates micro-vibration during rotation, which enhances the vibration frequency of the filter surface and works in conjunction with the scraper to improve the cleaning effect, effectively preventing clogging caused by sludge accumulation.

[0041] In addition, the system also has a backwashing function. The backwashing device is activated periodically to use water flow to backwash the filter screen. Generally, it is selected during the sludge feeding interval of the equipment. The back-blowing air pump is started to blow the filter screen with reverse airflow to disperse the residual sludge. Combined with mechanical scraping, the filter screen is self-cleaned, which significantly reduces the frequency and labor intensity of manual maintenance. Ultimately, it ensures that the filter residue adhesion is significantly reduced and the filter screen is maintained for long-term and efficient operation.

[0042] The dewatered and compressed solid sludge is continuously propelled by the screw shaft and concentrated at the discharge ports on both sides of the end of the chamber. The discharge ports are equipped with vibration auxiliary devices to prevent sludge blockage and accumulation through mechanical vibration, ensuring that the solid sludge can be discharged smoothly and continuously.

[0043] The solids content of the dewatered sludge is significantly increased and its volume is significantly reduced, making it easier for subsequent treatment processes such as transportation, drying, incineration or landfill.

[0044] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0045] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A sludge compressor, comprising a compressor body (1), characterized in that, The compressor body (1) is a cylindrical structure. A compression chamber (2) is provided inside the compressor body (1). One end of the compression chamber (2) is provided with a feed inlet (21) and the other end is provided with a discharge outlet (22). A compression section is provided inside the compression chamber (2). The compression section includes multiple parallel spiral shafts arranged along the length of the compression chamber (2). A filter screen (4) is provided inside the compression chamber (2). A drain hole (13) penetrating the housing of the compressor body (1) is provided on the compressor body (1).

2. A sludge compressor according to claim 1, characterized in that, The compression chamber (2) has a length of 1000 mm and an inner diameter of 400 mm.

3. A sludge compressor according to claim 1, characterized in that, The filter screen (4) is an elastic variable cross-section filter screen with a thickness of 2 mm. The filter screen (4) has filter holes (5) evenly arranged on it, and the pore size of the filter holes (5) ranges from 50 μm to 150 μm.

4. A sludge compressor according to claim 1, characterized in that, The spiral shaft includes a first spiral shaft (6A), a second spiral shaft (6B), and a third spiral shaft (6C) arranged in parallel. The centerlines of the first spiral shaft (6A), the second spiral shaft (6B), and the third spiral shaft (6C) are arranged in an equilateral triangle. The distance between the three shafts is 200mm.

5. A sludge compressor according to claim 1, characterized in that, The spiral shaft is provided with spiral blades, the spiral blades are 30mm wide, 150mm pitch and 8mm thick, and a scraper (11) is installed on the outside of the spiral shaft. The scraper (11) is an arc-shaped scraper.

6. A sludge compressor according to claim 4, characterized in that, The compressor body (1) is provided with a power unit for driving the spiral shaft at one end. The power unit includes a drive motor (7). The first spiral shaft (6A), the second spiral shaft (6B), and the third spiral shaft (6C) are all connected to independently arranged drive motors (7). The drive motor (7) is provided with a controller (8) for controlling the rotation of the drive motor (7). At least one of the first spiral shaft (6A), the second spiral shaft (6B), and the third spiral shaft (6C) is poweredly connected to the drive motor (7) through a bearing seat (14) and an eccentric wheel (15).

7. A sludge compressor according to claim 1, characterized in that, The compressor body (1) is provided with a base support (9) at one end. The base support (9) is connected to the compressor body (1) through a vibration spring (10). The spring stiffness of the vibration spring (10) is 500 N / m.

8. A sludge compressor according to claim 1, characterized in that, A water collection tank (16) is provided at the lower part of the compressor body (1), and a guide pipe (17) is provided at the upper end of the water collection tank (16). The guide pipe (17) is located below the compression chamber (2). A water accumulation channel (12) is provided on the inner wall of the compressor body (1). A drain hole (13) is located at the water accumulation channel (12). A regulating valve (18) is provided in the drain hole (13).

9. A sludge compressor according to claim 1, characterized in that, A backflush air pump (19) is provided on one side of the compressor body (1), and a backflush air pipe (25) is provided on the outside of the filter screen (4). The backflush air pipe (25) is connected to the backflush air pump (19).

10. A sludge compressor according to claim 1, characterized in that, The inner wall of the compressor body (1) is provided with a plurality of guide vanes (24), and the guide vanes (24) are located at one end near the feed inlet (21).

Images