Centrifugal dewatering structure

Abstract

The utility model discloses a centrifugal dewatering structure which comprises an outer cylinder, a centrifugal cylinder is arranged in the outer cylinder, a plurality of hollowed-out grooves are formed in the side wall of the centrifugal cylinder, filter screens are fixed in the hollowed-out grooves and located in the outer cylinder, the bottom of the centrifugal cylinder is in a funnel shape, and a discharging pipe is fixedly connected to the bottom of the centrifugal cylinder. The discharging pipe penetrates through the bottom wall of the outer barrel and is rotationally connected with the bottom wall of the outer barrel through a sealing bearing, and a motor for driving the centrifugal barrel to rotate is fixed to the top end of the outer side wall of the outer barrel. According to the sludge dewatering device, the outer cylinder, the centrifugal cylinder, the discharge pipe and the motor are arranged, water-containing sludge is discharged into the centrifugal cylinder before the stacked screw machine is used, the centrifugal cylinder is driven by the motor to rotate in the outer cylinder, and the filter screen is fixed on the side wall of the centrifugal cylinder, so that water in the sludge can be thrown out, and the preliminarily dewatered sludge is positioned in the centrifugal cylinder; and then the valve is opened, so that the sludge enters the stacked screw machine along the discharge pipe for further dehydration, and the dehydration effect can be improved.

Description

Technical Field

[0001] This utility model relates to the field of sludge dewatering technology, and in particular to a centrifugal dewatering structure. Background Technology

[0002] The working principle of a screw press sludge dewatering machine mainly relies on the dual effects of screw extrusion and gravity thickening. The sludge first undergoes gravity thickening in the thickening zone and then enters the dewatering zone. Driven by the screw shaft, the sludge is pushed into the dewatering zone, where the filter chamber, composed of fixed and moving rings, gradually removes moisture from the sludge through the pushing action of the screw shaft and the obstruction of the filter cloth.

[0003] However, different types of sludge have varying moisture contents, and the dewatering effect varies depending on the type of sludge when directly dewatered using a screw press. Specifically, the dewatering effect of a screw press is poor for sludge with high moisture content. Therefore, to address this shortcoming of existing screw presses, this invention proposes a centrifugal dewatering structure that pre-dewaters the sludge before feeding it back into the screw press for further dewatering, thereby improving the dewatering effect and efficiency. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a centrifugal dehydration structure.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a centrifugal dehydration structure, comprising an outer cylinder, a centrifugal cylinder inside the outer cylinder, multiple hollow grooves on the side wall of the centrifugal cylinder, and a filter screen fixed inside the hollow grooves, the filter screen being located inside the outer cylinder, the bottom of the centrifugal cylinder being funnel-shaped, and a discharge pipe fixedly connected to the bottom of the centrifugal cylinder, the discharge pipe penetrating the bottom wall of the outer cylinder and rotatably connected to the bottom wall of the outer cylinder via a sealed bearing, the top of the centrifugal cylinder penetrating the top wall of the outer cylinder and rotatably connected to the top wall of the outer cylinder via a sealed bearing, a motor for driving the centrifugal cylinder to rotate being fixedly installed at the top of the outer wall of the outer cylinder, the top of the centrifugal cylinder being an open design, and a sealing component being provided above the centrifugal cylinder, an electric telescopic rod for driving the sealing component to rise and fall being installed on the outer wall of the outer cylinder.

[0006] Furthermore, multiple support rods are fixed to the lower surface of the outer cylinder, and mounting plates are fixedly connected to the bottom ends of the support rods. The mounting plates are fixed to the top of the feed inlet of the screw press by bolts, and the discharge pipe is located above the feed inlet of the screw press.

[0007] Furthermore, a valve is fixedly connected to the middle of the discharge pipe.

[0008] Furthermore, a filter cloth is attached to and fixedly connected to the inner wall of the filter screen.

[0009] Furthermore, an external gear ring is fixed to the outer wall of the top of the centrifuge tube, and a drive gear is fixedly connected to the top output end of the motor, the drive gear meshing with the external gear ring.

[0010] Furthermore, a drain pipe is fixedly connected to the side wall of the outer cylinder.

[0011] Furthermore, the enclosed assembly includes a crossbar, with a vertical rod and a sleeve fixed to the lower surfaces of both ends of the crossbar, respectively. The sleeve is fitted onto the surface of the telescopic end of the electric telescopic rod, and the sleeve and the telescopic end of the electric telescopic rod are rotatably connected via a bearing. The bottom end of the vertical rod is rotatably connected to a top cover via a bearing. A locking bolt is threaded through the side wall of the sleeve and rotatably connected via a thread. One end of the locking bolt located inside the sleeve is in contact with the surface of the telescopic end of the electric telescopic rod.

[0012] The beneficial effects of this utility model are:

[0013] 1. In use, this utility model is a centrifugal dewatering structure, which includes an outer cylinder, a centrifugal cylinder, a discharge pipe, and a motor. Before using the screw press, the water-containing sludge is discharged into the centrifugal cylinder. The motor drives the centrifugal cylinder to rotate inside the outer cylinder. Since there is a filter screen fixed on the side wall of the centrifugal cylinder, the water in the sludge can be thrown out. The initially dewatered sludge is located inside the centrifugal cylinder. Then, the valve is opened so that the sludge enters the screw press along the discharge pipe for further dewatering, which can improve the dewatering effect.

[0014] 2. In use, this utility model is a centrifugal dehydration structure equipped with an electric telescopic rod and a sealing component. The electric telescopic rod can drive the sealing component to rise and fall. When the centrifuge drum is driven to rotate at high speed by the motor, the sealing component seals the top of the centrifuge drum to prevent water from being thrown out from the top of the centrifuge drum during rotation. Attached Figure Description

[0015] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 : Overall sectional view of this utility model;

[0017] Figure 2 : A three-dimensional view of the centrifuge cylinder of this utility model;

[0018] Figure 3 The present utility model Figure 1 Enlarged view of point A in the middle.

[0019] The attached figures are labeled as follows:

[0020] 1. Outer cylinder; 2. Centrifuge cylinder; 21. Filter screen; 22. External gear ring; 3. Discharge pipe; 4. Valve; 5. Motor; 51. Drive gear; 6. Sealing assembly; 61. Horizontal bar; 62. Vertical bar; 63. Top cover; 64. Sleeve; 65. Locking bolt; 7. Electric telescopic rod; 8. Drain pipe; 9. Support rod; 10. Mounting plate. Detailed Implementation

[0021] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figures 1-3 As shown, a centrifugal dehydration structure is disclosed, including an outer cylinder 1, a centrifugal cylinder 2 inside the outer cylinder 1, multiple hollow grooves on the side wall of the centrifugal cylinder 2, and a filter screen 21 fixed inside the hollow grooves, with the filter screen 21 located inside the outer cylinder 1. The bottom of the centrifugal cylinder 2 is funnel-shaped, and a discharge pipe 3 is fixedly connected to the bottom of the centrifugal cylinder 2. The discharge pipe 3 penetrates the bottom wall of the outer cylinder 1 and is rotatably connected to the bottom wall of the outer cylinder 1 through a sealed bearing. The top of the centrifugal cylinder 2 penetrates the top wall of the outer cylinder 1 and is rotatably connected to the top wall of the outer cylinder 1 through a sealed bearing. A motor 5 for driving the centrifugal cylinder 2 to rotate is fixed at the top of the outer wall of the outer cylinder 1. The top of the centrifugal cylinder 2 is an open design, and a sealing component 6 is provided above the centrifugal cylinder 2. An electric telescopic rod 7 for driving the sealing component 6 to rise and fall is installed on the outer wall of the outer cylinder 1.

[0023] Multiple support rods 9 are fixed on the lower surface of the outer cylinder 1. The bottom end of the support rods 9 is fixedly connected to the mounting plate 10. The mounting plate 10 is fixed to the top of the feed inlet of the screw press by bolts, and the discharge pipe 3 is located above the feed inlet of the screw press.

[0024] In this embodiment, the position of the mounting plate 10 is based on the existing screw press design. The mounting plate 10 is fixed to the top of the screw press inlet by bolts to achieve the fixation of the structure.

[0025] A valve 4 is fixedly connected to the middle of the discharge pipe 3.

[0026] When centrifuging and dewatering the sludge through centrifuge drum 2, valve 4 needs to be closed. After centrifugation and dewatering are completed, valve 4 can be opened to discharge the sludge along discharge pipe 3.

[0027] The inner wall of filter screen 21 is fitted with and fixedly connected to filter cloth.

[0028] In this embodiment, the filter screen 21 is made of stainless steel, while the filter cloth has smaller pores to prevent sludge from penetrating the filter cloth. The filter screen 21 provides support for the filter cloth, and the connection between the filter cloth and the filter screen 21 is detachable, making it easy to replace the filter cloth.

[0029] An external gear ring 22 is fixed to the outer wall of the top of the centrifuge cylinder 2, and a drive gear 51 is fixedly connected to the top output end of the motor 5. The drive gear 51 meshes with the external gear ring 22.

[0030] Under the meshing transmission action of the drive gear 51 and the external gear ring 22, the motor 5 can drive the centrifuge cylinder 2 to rotate.

[0031] A drain pipe 8 is fixedly connected to the side wall of the outer cylinder 1.

[0032] The water ejected from centrifuge tube 2 can be discharged along drain pipe 8.

[0033] The enclosed assembly 6 includes a crossbar 61, with a vertical bar 62 and a sleeve 64 fixed to the lower surfaces of both ends of the crossbar 61, respectively. The sleeve 64 is fitted onto the telescopic end surface of the electric telescopic rod 7, and the sleeve 64 is rotatably connected to the telescopic end of the electric telescopic rod 7 via a bearing. The bottom end of the vertical bar 62 is rotatably connected to a top cover 63 via a bearing. A locking bolt 65 is threaded through the side wall of the sleeve 64 and rotatably connected to it. One end of the locking bolt 65 located inside the sleeve 64 is in contact with the telescopic end surface of the electric telescopic rod 7.

[0034] The extension and retraction of the electric telescopic rod 7 drives the horizontal bar 61 to rise and fall, thereby causing the top cover 63 to rise and fall, allowing the top cover 63 to cover the top of the centrifuge cylinder 2, thus sealing the top of the centrifuge cylinder 2. Furthermore, since the top cover 63 is rotatably connected to the vertical rod 62, the top cover 63 covering the top of the centrifuge cylinder 2 will not affect the rotation of the centrifuge cylinder 2.

[0035] When it is necessary to disassemble and replace the filter cloth installed inside the centrifuge cylinder 2, loosen the locking bolt 65 to release the pressure of the locking bolt 65 on the telescopic end of the electric telescopic rod 7. At this time, the sleeve 64 can rotate on the surface of the telescopic end of the electric telescopic rod 7. Then, rotate the crossbar 61 and the top cover 63 to the side away from the centrifuge cylinder 2, so that the top of the centrifuge cylinder 2 is open, and the filter cloth on the inner wall of the centrifuge cylinder 2 can be disassembled and replaced. After the replacement is completed, rotate the top cover 63 to the top of the centrifuge cylinder 2 and retighten the locking bolt 65 to fix the sleeve 64.

[0036] Working principle: First, the electric telescopic rod 7 is activated to raise the top cover 63. Then, the sludge containing water is added into the centrifuge drum 2. Next, the electric telescopic rod 7 is activated again to lower the top cover 63 and place it on top of the centrifuge drum 2. Then, the motor 5 is activated to rotate the centrifuge drum 2, which will cause the water in the sludge to be thrown out. The thrown-out water will be discharged from the drain pipe 8, while the sludge will remain inside the centrifuge drum 2. After centrifugation, the valve 4 is opened, and the sludge is discharged into the screw press along the discharge pipe 3. By adding this pretreatment step, the dewatering effect of the screw press on sludge can be improved.

[0037] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A centrifugal dehydration structure, characterized in that: The system includes an outer cylinder (1), inside which is a centrifuge cylinder (2). The side wall of the centrifuge cylinder (2) has multiple hollowed-out grooves, and a filter screen (21) is fixed inside the hollowed-out grooves. The filter screen (21) is located inside the outer cylinder (1). The bottom of the centrifuge cylinder (2) is funnel-shaped, and a discharge pipe (3) is fixedly connected to the bottom of the centrifuge cylinder (2). The discharge pipe (3) penetrates the bottom wall of the outer cylinder (1) and is rotatably connected to the bottom wall of the outer cylinder (1) through a sealed bearing. The top of the centrifuge cylinder (2) penetrates the top wall of the outer cylinder (1) and is rotatably connected to the top wall of the outer cylinder (1) through a sealed bearing. A motor (5) for driving the centrifuge cylinder (2) to rotate is fixed at the top of the outer wall of the outer cylinder (1). The top of the centrifuge cylinder (2) is open, and a sealing component (6) is provided above the centrifuge cylinder (2). An electric telescopic rod (7) for driving the sealing component (6) to rise and fall is installed on the outer wall of the outer cylinder (1).

2. The centrifugal dehydration structure according to claim 1, characterized in that: Multiple support rods (9) are fixed on the lower surface of the outer cylinder (1). The bottom end of the support rod (9) is fixedly connected to an mounting plate (10). The mounting plate (10) is fixed to the top of the feed inlet of the screw press by bolts, and the discharge pipe (3) is located above the feed inlet of the screw press.

3. The centrifugal dehydration structure according to claim 1, characterized in that: A valve (4) is fixedly connected to the middle of the discharge pipe (3).

4. The centrifugal dehydration structure according to claim 1, characterized in that: The filter screen (21) has a filter cloth attached to and fixedly connected to its inner wall.

5. The centrifugal dehydration structure according to claim 1, characterized in that: An external gear ring (22) is fixed to the outer wall of the top of the centrifuge tube (2), and a drive gear (51) is fixedly connected to the top output end of the motor (5). The drive gear (51) meshes with the external gear ring (22).

6. The centrifugal dehydration structure according to claim 1, characterized in that: A drain pipe (8) is fixedly connected to the side wall of the outer cylinder (1).

7. The centrifugal dehydration structure according to claim 1, characterized in that: The enclosed assembly (6) includes a crossbar (61), with a vertical rod (62) and a sleeve (64) fixed to the lower surfaces of both ends of the crossbar (61). The sleeve (64) is fitted onto the telescopic end surface of the electric telescopic rod (7), and the sleeve (64) is rotatably connected to the telescopic end of the electric telescopic rod (7) via a bearing. The bottom end of the vertical rod (62) is rotatably connected to a top cover (63) via a bearing. The side wall of the sleeve (64) is penetrated and rotatably connected to a locking bolt (65) via a thread. One end of the locking bolt (65) located inside the sleeve (64) is in contact with the telescopic end surface of the electric telescopic rod (7).

Images