Pump-assisted pressurizing stacked screw type sludge dewatering machine

Abstract

The utility model relates to the technical field of sludge dewatering, and discloses a pump-assisted pressurizing stacked screw type sludge dewatering machine, which comprises a dewatering machine main body and a flocculation box, the dewatering machine main body comprises a mounting rack, a mounting frame is fixedly mounted on the upper side of the mounting rack, a filter cartridge is fixedly mounted in the mounting frame, a rotating shaft is rotatably mounted in the mounting frame, and the flocculation box is fixedly mounted in the mounting frame. Spiral propelling blades are fixedly mounted on the surface of the rotating shaft, and a dewatering motor is fixedly mounted at the end of the mounting frame. According to the sludge dewatering machine, the pressure box is arranged at the end of the filter cartridge, the piston is arranged in the pressure box, sewage is pumped and injected into the filter cartridge through reciprocating motion of the piston, the internal pressure of the filter cartridge is increased, when the rotating shaft rotates, the spiral propelling blade and the rotating disc are driven to rotate synchronously, and the spiral propelling blade rotates to extrude and dewater sludge; the rotating disc rotates and acts on the piston through transmission of the transmission rod, so that the pump-assisted pressurizing dehydration effect is achieved, and the sludge dehydration processing efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sludge dewatering, in particular to a pump-assisted pressurized screw stacking type sludge dewatering machine. Background Art

[0002] The spiral stacking sludge dewatering machine is widely used in the sludge dewatering process of sewage treatment plants because of its energy saving, water saving and small footprint. For example, the patent document with the prior art patent number CN205974229U discloses a spiral stacking sludge dewatering machine, including a shell, a filter device and a spiral pushing mechanism; the filter device is fixed to the inside of the shell and is located between the feed port and the mud outlet; the filter device includes a plurality of fixed rings, a plurality of floating rings, gaskets and fixing bolts. Advantages: The spiral stacking sludge dewatering machine provided by the utility model has many advantages such as strong dewatering ability, not easy to be blocked, low maintenance cost and long service life; at the same time, it has a compact structure, and the closed shell isolates the odor of sewage to prevent pollution to the environment. It is a dewatering equipment that can be put into actual life and environment in large quantities. Patent document CN203123658U also discloses a pump-assisted booster screw stack sludge dewatering machine, comprising: a booster pump, a joint, and a screw stack sludge dewatering machine; the booster pump is sealed and connected to the screw stack sludge dewatering machine. The water content of the dehydrated sludge is greatly reduced by the booster pump.

[0003] In order to solve the problem of insufficient dehydration pressure of the screw stack sludge dewatering machine, the existing technology simply installs a booster pump, which is not economical enough and requires an independent motor to power the booster pump. Since sludge dehydration is a slow process, the long-term low-power operation of the booster pump causes energy waste and poor practicality. In view of the problem of insufficient dehydration pressure in the existing screw stack sludge dewatering machine, the present application further improves it. Utility Model Content

[0004] The utility model aims to provide a pump-assisted pressurized screw stacking sludge dewatering machine to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pump-assisted pressurized spiral stacked sludge dewatering machine, comprising a dewatering machine body and a flocculation box, the dewatering machine body comprising a mounting frame, a mounting frame is fixedly mounted on the upper side of the mounting frame, a filter cartridge is fixedly mounted inside the mounting frame, a rotating shaft is rotatably mounted inside the mounting frame, a spiral propulsion blade is fixedly mounted on the surface of the rotating shaft, a dewatering motor is fixedly mounted on the end of the mounting frame, the dewatering motor drives the rotating shaft to rotate, and drives the spiral propulsion blade to rotate in the filter cartridge, a discharge port connected to the inner cavity of the filter cartridge is opened at the end of the mounting frame, and a pressure regulating plate is covered at the discharge port, and a pressurizing component is fixedly mounted on one end of the mounting frame away from the pressure regulating plate;

[0006] The boosting assembly includes a pressure box, a pumping chamber is arranged inside the pressure box, an intermittent connecting valve and a one-way valve are fixedly installed on the surface of the pressure box, the pumping chamber of the pressure box is connected with the filter cartridge through the intermittent connecting valve, and the pumping chamber of the pressure box is connected with the drain pipe of the flocculation box through the one-way valve, a rotating disk is rotatably installed inside the pressure box, the end of the rotating shaft extends into the pressure box and is fixedly connected to the rotating disk, a piston is slidably installed in the pumping chamber of the pressure box, a transmission rod is rotatably installed on the surface of the rotating disk at an eccentric position, and the end of the transmission rod is rotatably connected to the piston, and a dehydration motor provides power for the boosting assembly, which simplifies the structure of the dehydrator, makes full use of the kinetic energy of the dehydration motor, is more economical to use, and meets the needs of wide market promotion and application.

[0007] Preferably, the filter cartridge is a cylindrical structure formed by stacking a plurality of fixed rings and a plurality of movable rings on each other, a plurality of sliding rods are fixedly installed in the mounting frame, a plurality of fixed rings are slidably installed on the surfaces of the sliding rods, the movable ring is clamped between two adjacent fixed rings, a plurality of supporting springs are fixedly installed inside the mounting frame, the plurality of supporting springs are arranged in a ring-shaped array, and the plurality of supporting springs press against a pressure regulating plate so that the pressure regulating plate covers the discharge port of the mounting frame, the sludge is squeezed by the spiral propulsion blades of the filter cartridge, and the separated filtrate flows out from the gap between the fixed ring and the movable ring.

[0008] Preferably, the intermittent connecting valve includes an end plate and a sealing plate, a flow channel hole is opened on the surface of the end plate, the end plate is fixed to the end of the mounting frame, the flow channel hole is connected to the inner cavity of the filter cartridge, the sealing plate is fixedly connected to the rotating shaft, and the sealing plate and the end plate can be rotatably stacked together to realize the control of the opening and closing of the intermittent connecting valve by rotating the rotating shaft.

[0009] A fixed partition is fixedly installed inside the one-way valve, and a ring-shaped array of perforations are provided on the surface of the fixed partition. A movable partition is slidably installed on the lower side of the fixed partition. A return spring is arranged inside the one-way valve to press the movable partition upward. The movable partition covers the lower opening of the perforations. Sewage can only enter the pressure tank from the drain pipe of the flocculation tank to prevent backflow.

[0010] Preferably, there are two filter cartridges, each of which is provided with a rotating shaft and a spiral propulsion blade, and sprockets are fixedly installed at the ends of the two rotating shafts. The two sprockets are driven by chains, and the pump suction chamber of the pressure box is divided into two left and right chambers by a piston. The left and right chambers are connected to the two filter cartridges through intermittent connecting valves, respectively, and the left and right chambers are connected to the drain pipe of the flocculation box through a one-way valve, respectively, so that when the piston reciprocates, sewage can be pressed into the filter cartridges on both sides, thereby increasing the internal pressure in the filter cartridges.

[0011] Preferably, a stirring blade is rotatably installed inside the flocculation box, a stirring motor is fixedly installed on the top of the flocculation box, the stirring motor drives the stirring blade to rotate, a sewage input pipe and a dosing pipe are fixedly installed on the side of the flocculation box, and sewage and flocculant can be respectively input into the flocculation box from the sewage input pipe and the dosing pipe. Beneficial Effects

[0012] The utility model provides a pump-assisted pressurized screw stacking sludge dewatering machine, which has the following beneficial effects:

[0013] 1. The sludge dewatering machine is provided with a pressure box at the end of the filter cylinder. A piston is provided in the pressure box. The reciprocating movement of the piston is used to pump sewage into the filter cylinder to increase the internal pressure. When the rotating shaft rotates, the spiral propulsion blade and the rotating disk are driven to rotate synchronously. The rotation of the spiral propulsion blade can squeeze and dehydrate the sludge. The rotation of the rotating disk is driven by the transmission rod to work on the piston, achieving the effect of pump-assisted pressurized dehydration, which greatly improves the sludge dehydration processing efficiency.

[0014] 2. The sludge dewatering machine expands the sludge dewatering processing capacity by setting up a double filter cartridge structure. Since the pump suction chamber of the pressure box is divided into two left and right chambers by the piston, when the rotating shaft rotates and drives the piston to reciprocate, the sewage in the left and right chambers can be alternately pressed into the two filter cartridges respectively, realizing the linkage of sewage pumping, pressurization and concentration and dehydration, making the equipment operation more reliable and stable. The design structure is compact and reasonable, making full use of the kinetic energy of the dehydration motor, more economical, and meeting the needs of extensive market promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model (I);

[0016] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model (II);

[0017] Figure 3 This is a schematic diagram of the internal structure of the utility model;

[0018] Figure 4 It is a schematic diagram of an intermittent connection valve;

[0019] Figure 5 It is a schematic diagram of the side section structure of the pressure box;

[0020] Figure 6 for Figure 5 The enlarged structural diagram at A in the middle;

[0021] Figure 7 for Figure 3 Enlarged structural diagram at B in the middle.

[0022] In the figure: 1 flocculation box, 2 mounting frame, 3 mounting frame, 4 filter cartridge, 5 rotating shaft, 6 spiral propulsion blade, 7 dehydration motor, 8 pressure regulating plate, 9 pressure box, 10 intermittent connecting valve, 11 one-way valve, 12 rotating disk, 13 piston, 14 transmission rod, 15 fixed ring, 16 floating ring, 17 end disk, 18 blocking plate, 19 fixed partition, 20 movable partition, 21 stirring motor, 22 stirring blade, 23 supporting spring. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-7 The utility model provides a technical solution: a pump-assisted pressurized screw stacking sludge dewatering machine, comprising a dewatering machine body and a flocculation box 1, wherein a stirring blade 22 is rotatably installed inside the flocculation box 1, a stirring motor 21 is fixedly installed at the top of the flocculation box 1, and the stirring motor 21 drives the stirring blade 22 to rotate, and a sewage input pipe and a dosing pipe are fixedly installed on the sides of the flocculation box 1.

[0025] The main body of the dehydrator includes a mounting frame 2, a mounting frame 3 is fixedly mounted on the upper side of the mounting frame 2, a water collecting bottom shell is arranged on the lower side of the mounting frame 3, a filter cartridge 4 is fixedly mounted inside the mounting frame 3, and specifically, the filter cartridge 4 is a cylindrical structure formed by stacking a plurality of fixed rings 15 and a plurality of floating rings 16, a plurality of sliding rods are fixedly mounted inside the mounting frame 3, a plurality of fixed rings 15 are slidably mounted on the surface of the sliding rods, and the floating ring 16 is clamped and arranged between two adjacent fixed rings 15, such as Figure 7 shown.

[0026] A rotating shaft 5 is rotatably installed inside the mounting frame 3, and a spiral propulsion blade 6 is fixedly installed on the surface of the rotating shaft 5. A dehydration motor 7 is fixedly installed on the end of the mounting frame 3. The dehydration motor 7 drives the rotating shaft 5 to rotate, thereby driving the spiral propulsion blade 6 to rotate in the filter cartridge 4. A discharge port connected to the inner cavity of the filter cartridge 4 is opened at the end of the mounting frame 3, and a pressure regulating plate 8 is covered at the discharge port. A plurality of support springs 23 are fixedly installed inside the mounting frame 3. The plurality of support springs 23 are arranged in a ring array, and the plurality of support springs 23 press against the pressure regulating plate 8, so that the pressure regulating plate 8 covers the discharge port of the mounting frame 3.

[0027] A boosting assembly is fixedly installed at one end of the mounting frame 3 away from the pressure regulating plate 8, and the boosting assembly includes a pressure box 9, a pumping chamber is arranged inside the pressure box 9, and an intermittent connecting valve 10 and a one-way valve 11 are fixedly installed on the surface of the pressure box 9, the pumping chamber of the pressure box 9 is connected with the filter cartridge 4 through the intermittent connecting valve 10, and the pumping chamber of the pressure box 9 is connected with the drain pipe of the flocculation box 1 through the one-way valve 11. A rotating disk 12 is rotatably installed inside the pressure box 9, and the end of the rotating shaft 5 extends into the pressure box 9 and is fixedly connected to the rotating disk 12. A piston 13 is slidably installed in the pumping chamber of the pressure box 9, and a transmission rod 14 is rotatably installed on the surface of the rotating disk 12 at an eccentric position, and the end of the transmission rod 14 is rotatably connected to the piston 13. When the rotating disk 12 rotates, the piston 13 is pushed to move back and forth in the pumping chamber of the pressure box 9 through the transmission rod 14.

[0028] Among them, reference Figure 4 The intermittent connecting valve 10 includes an end plate 17 and a sealing plate 18. A flow channel hole is opened on the surface of the end plate 17. The end plate 17 is fixed to the end of the mounting frame 3. The flow channel hole is connected to the inner cavity of the filter cartridge 4. The sealing plate 18 is fixedly connected to the rotating shaft 5, and the sealing plate 18 and the end plate 17 are rotatably stacked together. When the sealing plate 18 rotates with the rotating shaft 5, the sealing plate 18 blocks the flow channel hole of the end plate 17, so that the intermittent connecting valve 10 is in a truncated state. When the sealing plate 18 and the flow channel hole of the end plate 17 are offset, the intermittent connecting valve 10 is in a conducting state.

[0029] refer to Figure 6 A fixed partition 19 is fixedly installed inside the one-way valve 11, and a ring-shaped array of perforations are opened on the surface of the fixed partition 19. A movable partition 20 is slidably installed on the lower side of the fixed partition 19. A return spring is arranged inside the one-way valve 11 to press the movable partition 20 upward. The movable partition 20 covers the lower opening of the perforation. When a pressure difference is formed between the upper and lower sides of the one-way valve 11, the movable partition 20 moves downward, and the one-way valve 11 is in a conducting state, that is, sewage can only enter the pressure tank 9 from the drain pipe of the flocculation tank 1, thereby preventing backflow.

[0030] In this embodiment, there are two filter cartridges 4, and a rotating shaft 5 and a spiral propulsion blade 6 are disposed inside the two filter cartridges 4. Sprockets are fixedly mounted on the ends of the two rotating shafts 5, and the two sprockets are driven by chains.

[0031] refer to Figure 5 The pumping chamber of the pressure box 9 is divided into two left and right chambers by the piston 13. The left and right chambers are connected with the two filter cartridges 4 through the intermittent connecting valve 10 respectively, and the left and right chambers are connected with the drainage pipe of the flocculation box 1 through the one-way valve 11 respectively. When the piston 13 reciprocates, sewage can be pressed into the filter cartridges 4 on both sides respectively, and the internal pressure of the filter cartridges 4 is increased at the same time.

[0032] A pressure box 9 is provided at the end of the filter cylinder 4, and a piston 13 is provided in the pressure box 9. The reciprocating movement of the piston 13 is utilized to pump sewage into the filter cylinder 4 to increase the internal pressure thereof. When the rotating shaft 5 rotates, the spiral propulsion blade 6 and the rotating disk 12 are driven to rotate synchronously. The rotation of the spiral propulsion blade 6 can squeeze and dehydrate the sludge. The rotation of the rotating disk 12 is transmitted through the transmission rod 14 to work on the piston 13. The sludge dewatering machine has the function of pump-assisted pressurized dehydration, which greatly improves the sludge dewatering processing efficiency.

[0033] Working principle: sewage and flocculant are respectively input into the flocculation box 1, and the stirring motor 21 drives the stirring blade 22 to rotate to stir the sewage to promote flocculation, and then the sewage overflows and is input into the drain pipe of the flocculation box 1, and the dehydration motor 7 drives the rotating shaft 5 to rotate, and through the transmission of the rotating disk 12 and the transmission rod 14, the piston 13 is driven to move back and forth, and the sewage is sucked into the pressure box 9, and then pressed into the filter cylinder 4, and the spiral propulsion blade 6 rotates to concentrate and squeeze the sewage flocculants, and the separated filtrate flows out from the gap between the fixed ring 15 and the floating ring 16, and the compressed mud pushes the pressure regulating plate 8 and is discharged.

[0034] The dewatering machine is arranged in a double filter cartridge 4 structure, which expands the processing capacity of the sludge dewatering treatment. Since the pump suction chamber of the pressure box 9 is divided into two left and right chambers by the piston 13, when the rotating shaft 5 rotates to drive the piston 13 to reciprocate, the sewage in the left and right chambers can be alternately pressed into the filter cartridges 4 on both sides in turn, realizing the linkage of sewage pumping, pressurization and concentration and dehydration, making the equipment operation more reliable and stable. The design structure is compact and reasonable, fully utilizing the kinetic energy of the dehydration motor 7, and is more economical to use, meeting the needs of extensive market promotion and application.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pump-assisted pressurized screw stacking sludge dewatering machine, comprising a dewatering machine body and a flocculation tank (1), characterized in that: The dehydrator body comprises a mounting frame (2), a mounting frame (3) is fixedly mounted on the upper side of the mounting frame (2), a filter cartridge (4) is fixedly mounted inside the mounting frame (3), a rotating shaft (5) is rotatably mounted inside the mounting frame (3), a spiral propulsion blade (6) is fixedly mounted on the surface of the rotating shaft (5), a dehydration motor (7) is fixedly mounted at the end of the mounting frame (3), the dehydration motor (7) drives the rotating shaft (5) to rotate, thereby driving the spiral propulsion blade (6) to rotate inside the filter cartridge (4), a discharge port communicating with the inner cavity of the filter cartridge (4) is opened at the end of the mounting frame (3), and a pressure regulating plate (8) is covered at the discharge port, and a booster assembly is fixedly mounted on one end of the mounting frame (3) away from the pressure regulating plate (8); The booster assembly comprises a pressure box (9), a pumping chamber is arranged inside the pressure box (9), an intermittent connecting valve (10) and a one-way valve (11) are fixedly mounted on the surface of the pressure box (9), the pumping chamber of the pressure box (9) is connected to the filter cartridge (4) via the intermittent connecting valve (10), the pumping chamber of the pressure box (9) is connected to the drain pipe of the flocculation box (1) via the one-way valve (11), a rotating disk (12) is rotatably mounted inside the pressure box (9), the end of the rotating shaft (5) extends into the pressure box (9) and is fixedly connected to the rotating disk (12), a piston (13) is slidably mounted in the pumping chamber of the pressure box (9), a transmission rod (14) is rotatably mounted at an eccentric position on the surface of the rotating disk (12), and the end of the transmission rod (14) is rotatably connected to the piston (13).

2. The pump-assisted pressurized screw stacking sludge dewatering machine according to claim 1, characterized in that: The filter cartridge (4) is a cylindrical structure formed by stacking a plurality of fixed rings (15) and a plurality of movable rings (16) on each other. A plurality of sliding rods are fixedly mounted in the mounting frame (3). The plurality of fixed rings (15) are slidably mounted on the surfaces of the sliding rods. The movable ring (16) is clamped between two adjacent fixed rings (15).

3. The pump-assisted pressurized screw stacking sludge dewatering machine according to claim 2, characterized in that: The intermittent communication valve (10) comprises an end plate (17) and a sealing plate (18); a flow channel hole is provided on the surface of the end plate (17); the end plate (17) is fixed to the end of the mounting frame (3); the flow channel hole is communicated with the inner cavity of the filter cartridge (4); the sealing plate (18) is fixedly connected to the rotating shaft (5); and the sealing plate (18) and the end plate (17) are rotatably stacked together.

4. The pump-assisted pressurized screw stacking sludge dewatering machine according to claim 3 is characterized by: A fixed partition (19) is fixedly installed inside the one-way valve (11), and a ring-shaped array of perforations is provided on the surface of the fixed partition (19). A movable partition (20) is slidably installed on the lower side of the fixed partition (19). A return spring is provided inside the one-way valve (11) to press the movable partition (20) upward, and the movable partition (20) covers the lower opening of the perforations.

5. The pump-assisted pressurized screw stacking sludge dewatering machine according to claim 4, characterized in that: There are two filter cartridges (4), each of which is provided with a rotating shaft (5) and a spiral propulsion blade (6). Sprockets are fixedly mounted on the ends of the two rotating shafts (5), and the two sprockets are driven by chains.

6. The pump-assisted pressurized screw stacking sludge dewatering machine according to claim 5, characterized in that: The pumping chamber of the pressure box (9) is divided into two left and right chambers by a piston (13); the left and right chambers are respectively connected to two filter cartridges (4) via intermittent connecting valves (10); and the left and right chambers are respectively connected to the drainage pipe of the flocculation box (1) via a one-way valve (11).

7. A pump-assisted pressurized screw stacking sludge dewatering machine according to any one of claims 1 to 6, characterized in that: A stirring blade (22) is rotatably mounted inside the flocculation box (1), a stirring motor (21) is fixedly mounted on the top of the flocculation box (1), the stirring motor (21) drives the stirring blade (22) to rotate, and a sewage input pipe and a drug dosing pipe are respectively fixedly mounted on the sides of the flocculation box (1).

8. The pump-assisted pressurized screw stacking sludge dewatering machine according to claim 7, characterized in that: A plurality of support springs (23) are fixedly mounted inside the installation frame (3), the plurality of support springs (23) are arranged in a ring-shaped array, and the plurality of support springs (23) are pressed against the pressure regulating plate (8), so that the pressure regulating plate (8) covers the discharge opening of the installation frame (3).

Images