A sludge dewatering device for solid waste treatment

Abstract

This utility model discloses a sludge dewatering device for solid waste treatment, belonging to the field of sludge dewatering technology. It includes a base frame with a main body mounted on it. Inside the main body is a support plate, and a filter screen is installed within the main body via the support plate. A baffle structure allows adjustment of the positions of the mounting plate and the baffle plate, changing the distance between the baffle plate and the fixed plate to adjust the compression ratio. An adjusting plate and a buffer spring are installed on the threaded rod, allowing the mounting plate and the baffle plate to apply elastic compression to the material. This causes the resistance force to automatically change with the degree of material compression, preventing equipment overload or material blockage caused by rigid compression. An elastic hopper and a vibrating support structure are installed, applying impact force to the solids falling onto the elastic hopper. Combined with the vibrating support structure, the elastic hopper vibrates, preventing solid adhesion and ensuring normal material feeding.

Description

Technical Field

[0001] This utility model relates to the field of sludge dewatering technology, and in particular to a sludge dewatering device for solid waste treatment. Background Technology

[0002] Solid waste, or solid waste material, is a core component of solid waste treatment. Sludge dewatering equipment is primarily used to reduce the moisture content and volume of sludge, facilitating subsequent incineration, landfill, or resource utilization. Commonly used sludge dewatering equipment includes belt filter presses, screw presses, plate and frame filter presses, centrifugal sludge dewatering machines, and screw presses. Among these, screw presses, which utilize the screw extrusion principle for dewatering, are widely used in solid waste treatment.

[0003] In operation, sludge enters the filter screen of a screw press dewatering machine. The screw blades then transport and compress the sludge, dewatering it. Liquid is discharged through the filter screen, while solids are discharged from the baffle plate. In existing screw press dewatering machines, the baffle plate is fixed in position, working in conjunction with the screw blades to create a second compression effect, allowing for further dewatering of the sludge. However, the baffle plate cannot be adjusted in position, making it difficult to adjust the compression ratio according to different situations. This results in limited flexibility and adaptability. Furthermore, the fixed baffle plate provides rigid compression, which can easily cause sludge blockage, thus affecting the discharge efficiency. Utility Model Content

[0004] The main objective of this invention is to provide a sludge dewatering device for solid waste treatment, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A sludge dewatering device for solid waste treatment includes a base frame, a main body of the device mounted on the base frame, a support plate inside the main body, a filter screen mounted inside the main body via the support plate, a spiral extrusion rod inside the filter screen, a fixing plate inside the main body located at the end of the filter screen, the end of the spiral extrusion rod penetrating the fixing plate, an elastic discharge hopper on the fixing plate, a material blocking structure on the main body, and a vibration support structure on the base frame.

[0007] Preferably, a motor is fixed on the base frame, and a reducer connected to the motor is provided on the base frame, with the end of the spiral extrusion rod connected to the reducer.

[0008] Preferably, a feed hopper is installed at the upper end of the main body of the device, and the lower end of the feed hopper is connected to the filter screen.

[0009] Preferably, the vibration support structure is symmetrically arranged on the base frame, and the upper end of the vibration support structure contacts the elastic feed hopper.

[0010] Preferably, the material blocking structure includes a mounting plate, a material blocking plate, a telescopic cylinder, a connecting frame, a movable rod, and a threaded rod. The mounting plate and the material blocking plate are fixedly connected, and the mounting plate and the material blocking plate are sleeved at the end position of the spiral extrusion rod. The telescopic cylinder is fixed to the end of the main body of the device and is connected to the connecting frame. The movable rod and the threaded rod are fixedly connected, and the threaded rod is threadedly connected to the mounting plate. The movable rod passes through one end of the connecting frame.

[0011] Preferably, the material blocking structure further includes an adjusting plate, a buffer spring, and a limiting block. The adjusting plate and the buffer spring are fixedly connected, and the adjusting plate is threadedly connected to the threaded rod. The end of the buffer spring abuts against the connecting frame, and the limiting block is installed at the end of the movable rod.

[0012] Preferably, the vibration support structure includes a fixed rod, a movable sleeve, a vibration spring, and an inclined plate. The fixed rod is fixed to the base frame, the movable sleeve and the vibration spring are fixedly connected, and the movable sleeve is sleeved on the fixed rod. The movable sleeve is provided with a fixing screw, and the inclined plate is installed on the upper end of the vibration spring.

[0013] Compared with the prior art, this utility model has the following beneficial effects: This sludge dewatering device for solid waste treatment, through the setting of a baffle structure, adopts a telescopic cylinder, connecting frame, movable rod, threaded rod and other structures, which can adjust the position of the mounting plate and the baffle plate, change the distance between the baffle plate and the fixed plate, and achieve the effect of adjusting the compression ratio. It is suitable for different compression requirements and has high flexibility and adaptability. The setting of an adjustment plate and a buffer spring on the threaded rod makes the mounting plate and the baffle plate apply elastic compression to the material, so that the resistance force changes automatically with the degree of material compression, avoiding equipment overload or material blockage caused by rigid compression. The adjustment plate can be adjusted in position, which is convenient for fine adjustment according to the actual situation, further increasing the flexibility of use. Through the installed elastic feeding hopper and vibration support structure, the solid falls onto the elastic feeding hopper and applies an impact force. In conjunction with the vibration support structure, the elastic feeding hopper forms a vibration effect, preventing solid adhesion and ensuring normal feeding. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of the main body of the device of this utility model;

[0016] Figure 3 This is a structural schematic diagram of the fixing plate of this utility model;

[0017] Figure 4 This is a schematic diagram of the material-blocking structure of this utility model;

[0018] Figure 5 This utility model Figure 4 Enlarged view of point A in the middle;

[0019] Figure 6 This is a schematic diagram of the vibration support structure of this utility model.

[0020] In the diagram: 1. Base frame; 2. Main body of the device; 3. Support plate; 4. Filter screen; 5. Spiral extrusion rod; 6. Fixing plate; 7. Material blocking structure; 701. Mounting plate; 702. Material blocking plate; 703. Telescopic cylinder; 704. Connecting frame; 705. Movable rod; 706. Threaded rod; 707. Adjusting plate; 708. Buffer spring; 709. Limiting block; 8. Elastic hopper; 9. Vibration support structure; 901. Fixing rod; 902. Movable sleeve; 903. Vibration spring; 904. Inclined plate; 10. Feed hopper; 11. Motor; 12. Reducer. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] like Figures 1-6 As shown, a sludge dewatering device for solid waste treatment includes a base frame 1, a device body 2 mounted on the base frame 1, a support plate 3 inside the device body 2, a filter screen 4 installed inside the device body 2 via the support plate 3, a spiral extrusion rod 5 inside the filter screen 4, a fixing plate 6 located at the end of the filter screen 4 inside the device body 2, the end of the spiral extrusion rod 5 penetrating the fixing plate 6, an elastic discharge hopper 8 on the fixing plate 6, a baffle structure 7 on the device body 2, and a vibration support structure 9 on the base frame 1.

[0023] A motor 11 is fixed on the base frame 1, and a reducer 12 connected to the motor 11 is also provided on the base frame 1. The end of the spiral extrusion rod 5 is connected to the reducer 12. A feed hopper 10 is installed at the upper end of the main body 2 of the device, and the lower end of the feed hopper 10 is connected to the filter screen 4. Vibration support structures 9 are symmetrically arranged on the base frame 1, and the upper end of the vibration support structures 9 contacts the elastic feed hopper 8.

[0024] In solid waste treatment, a screw press dewatering machine is used to dewater sludge. Sludge is fed into the feed hopper 10 and enters the filter screen 4 inside the main body 2 of the device. The motor 11 on the base frame 1 starts and drives the screw extrusion rod 5 to rotate through the reducer 12. Under the action of the screw extrusion rod 5, the sludge moves and is squeezed, thereby achieving the dewatering effect. The squeezed wastewater drips from the filter screen 4 into the main body 2 of the device and is finally discharged from the drain port, while the solid material continues to move inside the filter screen 4 and is finally discharged from the opening at the fixed plate 6.

[0025] During the dewatering process, the solid material at the fixed plate 6 contacts the baffle structure 7, resulting in secondary compression dewatering. The solid material is then discharged onto the elastic feed hopper 8. The elastic feed hopper 8 deforms downwards upon impact, creating vibration in conjunction with the vibrating support structure 9, ensuring rapid discharge of the solid material. When needed, the baffle structure 7 can be adjusted to change the compression ratio, thereby regulating the solid material discharge effect at the fixed plate 6. This method is suitable for sludge with different dewatering requirements and offers high flexibility in use.

[0026] According to the above implementation scheme, the material blocking structure 7 includes a mounting plate 701, a material blocking plate 702, a telescopic cylinder 703, a connecting frame 704, a movable rod 705, and a threaded rod 706. The mounting plate 701 and the material blocking plate 702 are fixedly connected, and the mounting plate 701 and the material blocking plate 702 are sleeved at the end position of the spiral extrusion rod 5. The telescopic cylinder 703 is fixed to the end of the device body 2, and the telescopic cylinder 703 is connected to the connecting frame 704. The movable rod 705 and the threaded rod 706 are fixedly connected, and the threaded rod 706 is threadedly connected to the mounting plate 701. The movable rod 705 passes through one end of the connecting frame 704. The baffle structure 7 also includes an adjusting plate 707, a buffer spring 708, and a limiting block 709. The adjusting plate 707 and the buffer spring 708 are fixedly connected, and the adjusting plate 707 is threadedly connected to the threaded rod 706. The end of the buffer spring 708 abuts against the connecting frame 704, and the limiting block 709 is installed at the end of the movable rod 705.

[0027] During the sludge dewatering process, the dewatered solid material is discharged from the fixed plate 6. During this process, the baffle plate 702 on the mounting plate 701 acts as a barrier, which can form a secondary extrusion. At the same time, after being subjected to the force of the sludge, the baffle plate 702 moves along the end of the spiral extrusion rod 5, thereby moving the threaded rod 706 and the movable rod 705 along the connecting frame 704. The threaded rod 706 also moves the adjusting plate 707, thereby compressing the buffer spring 708, so that the baffle plate 702 applies an elastic blocking effect. It can adapt during the discharge process, avoid overload or blockage caused by rigid extrusion, and ensure the normal discharge process. When needed, the telescopic cylinder 703 can be activated to move the connecting frame 704, which in turn moves the movable rod 705, the threaded rod 706, the mounting plate 701, and the baffle plate 702, thereby changing the distance between the baffle plate 702 and the fixed plate 6. This is suitable for extrusion situations with different compression ratios and offers high flexibility. The position of the adjusting plate 707 on the threaded rod 706 can also be adjusted to fine-tune the mounting plate 701 and the baffle plate 702, resulting in high adaptability.

[0028] According to the above implementation scheme, the vibration support structure 9 includes a fixed rod 901, a movable sleeve 902, a vibration spring 903, and an inclined plate 904. The fixed rod 901 is fixed on the base frame 1. The movable sleeve 902 and the vibration spring 903 are fixedly connected, and the movable sleeve 902 is sleeved on the fixed rod 901. The movable sleeve 902 is provided with a fixing screw. The inclined plate 904 is installed on the upper end of the vibration spring 903.

[0029] During the feeding process, when the material falls onto the elastic feeding hopper 8, the hopper 8 bends downwards, causing the inclined plate 904 to move towards the movable sleeve 902. This compresses the vibration spring 903 via the inclined plate 904. The vibration spring 903 absorbs and releases energy, creating vibration, which in turn causes the elastic feeding hopper 8 to vibrate. This prevents material from sticking and ensures normal feeding. If the initial height of the inclined plate 904 needs to be changed, the fixing screws can be loosened, and the position of the movable sleeve 902 on the fixing rod 901 can be adjusted. This allows for adjustment of the positions of the vibration spring 903 and the inclined plate 904, making it flexible and convenient to use.

[0030] It should be noted that the baffle structure 7, using a telescopic cylinder 703, connecting frame 704, movable rod 705, threaded rod 706, etc., allows for adjustment of the positions of the mounting plate 701 and the baffle plate 702, changing the distance between the baffle plate 702 and the fixed plate 6, thus adjusting the compression ratio. This is suitable for different compression requirements, offering high flexibility and adaptability. An adjusting plate 707 and a buffer spring 708 are installed on the threaded rod 706, allowing the mounting plate 701 and the baffle plate 702 to apply elastic pressure to the material. This causes the resistance force to automatically change with the degree of material compression, preventing equipment overload or material blockage caused by rigid pressure. The adjusting plate 707 can be adjusted in position, facilitating fine-tuning according to actual conditions and further increasing operational flexibility. The installed elastic hopper 8 and vibrating support structure 9 apply impact force to solids falling onto the elastic hopper 8. Combined with the vibrating support structure 9, this creates a vibration effect in the elastic hopper 8, preventing solids from sticking and ensuring normal material feeding.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A sludge dewatering device for solid waste treatment, comprising a base frame (1), a device body (2) mounted on the base frame (1), and a support plate (3) provided inside the device body (2), a filter screen (4) installed inside the device body (2) via the support plate (3), and a spiral extrusion rod (5) provided inside the filter screen (4), characterized in that: The device body (2) has a fixed plate (6) located at the end of the filter screen (4) inside. The end of the spiral extrusion rod (5) passes through the fixed plate (6), and the fixed plate (6) has an elastic feeding hopper (8). The device body (2) has a baffle structure (7), and the base frame (1) has a vibration support structure (9).

2. The sludge dewatering device for solid waste treatment according to claim 1, characterized in that: A motor (11) is fixed on the base frame (1), and a reducer (12) connected to the motor (11) is provided on the base frame (1). The end of the spiral extrusion rod (5) is connected to the reducer (12).

3. The sludge dewatering device for solid waste treatment according to claim 2, characterized in that: The upper end of the main body (2) of the device is equipped with a feed hopper (10), and the lower end of the feed hopper (10) is connected to the filter screen (4).

4. The sludge dewatering device for solid waste treatment according to claim 3, characterized in that: The vibration support structure (9) is symmetrically arranged on the base frame (1), and the upper end of the vibration support structure (9) contacts the elastic feed hopper (8).

5. The sludge dewatering device for solid waste treatment according to claim 4, characterized in that: The baffle structure (7) includes a mounting plate (701), a baffle plate (702), a telescopic cylinder (703), a connecting frame (704), a movable rod (705), and a threaded rod (706). The mounting plate (701) and the baffle plate (702) are fixedly connected, and the mounting plate (701) and the baffle plate (702) are sleeved at the end of the spiral extrusion rod (5). The telescopic cylinder (703) is fixed at the end of the device body (2), and the telescopic cylinder (703) is connected to the connecting frame (704). The movable rod (705) and the threaded rod (706) are fixedly connected, and the threaded rod (706) is threaded onto the mounting plate (701). The movable rod (705) passes through one end of the connecting frame (704).

6. The sludge dewatering device for solid waste treatment according to claim 5, characterized in that: The baffle structure (7) further includes an adjusting plate (707), a buffer spring (708), and a limiting block (709). The adjusting plate (707) and the buffer spring (708) are fixedly connected, and the adjusting plate (707) is threadedly connected to the threaded rod (706). The end of the buffer spring (708) abuts against the connecting frame (704), and the limiting block (709) is installed at the end of the movable rod (705).

7. A sludge dewatering device for solid waste treatment according to claim 6, characterized in that: The vibration support structure (9) includes a fixed rod (901), a movable sleeve (902), a vibration spring (903), and an inclined plate (904). The fixed rod (901) is fixed on the base frame (1). The movable sleeve (902) and the vibration spring (903) are fixedly connected, and the movable sleeve (902) is sleeved on the fixed rod (901). The movable sleeve (902) is provided with a fixing screw. The inclined plate (904) is installed on the upper end of the vibration spring (903).

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