Efficient desliming equipment for sewage treatment

Abstract

The utility model discloses efficient desliming equipment for sewage treatment, which comprises a horizontally arranged desliming cylinder, a main shaft coaxially arranged with the desliming cylinder is arranged in the desliming cylinder in a penetrating manner, two groups of symmetrically arranged extrusion spiral blades are fixedly mounted on the main shaft, and the screw pitches of the two groups of extrusion spiral blades are gradually reduced from the opposite outer ends to the opposite inner ends; the middle position of the main shaft is sleeved with a fixing disc of an annular structure, the two sides of the fixing disc are each provided with a back pressure disc of an annular structure, the back pressure discs are arranged close to the ends of the extrusion spiral blades, and the fixing disc and the back pressure discs are connected through a plurality of connecting rods distributed in a circumferential mode. According to the efficient desliming equipment for sewage treatment provided by the utility model, synchronous extrusion dewatering treatment on two different types of sludge can be realized through one set of power system, so that the application range of the equipment is widened.

Description

Technical Field

[0001] The utility model relates to a high-efficiency desludging device for sewage treatment, belonging to the technical field of sewage treatment. Background Art

[0002] Sludge dewatering is a sludge treatment method that removes moisture from flowing primary, concentrated or digested sludge and converts it into semi-solid or solid mud blocks. The dewatering methods mainly include natural drying, mechanical dewatering and granulation. Natural drying and mechanical dewatering are suitable for sewage sludge, and granulation is suitable for coagulated and precipitated sludge.

[0003] The screw dehydrator is a commonly used mechanical dehydration method. The screw is installed in a cylinder composed of filter screens. The volume between the screw blades gradually decreases from the inlet to the outlet of the dehydrated raw material, and the dehydrated raw material is gradually compressed. The solid and liquid in the dehydrated raw material are separated by compression.

[0004] However, the spiral dewatering machine in the prior art can only dewater a single type of sewage sludge. However, there are many types of sludge, such as chemical sludge, organic sludge and inorganic sludge. Different types of sludge are disposed in different ways after dehydration. Some are used for incineration, some are used as fertilizers, and some can be used as admixtures of building materials. At present, different types of sludge cannot be processed by one spiral dewatering machine at the same time.

[0005] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0006] The utility model aims at the deficiencies in the background technology and provides a high-efficiency desludging device for sewage treatment, which can realize synchronous extrusion and dehydration treatment of two different types of sludge through a set of power system, thereby improving the application scope of the equipment.

[0007] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0008] A high-efficiency desludging device for sewage treatment comprises a horizontally arranged desludging cylinder, a main shaft coaxially arranged therewith is passed through the cylinder, two groups of symmetrically arranged extrusion spiral blades are fixedly mounted on the main shaft, and the pitches of the two groups of extrusion spiral blades gradually decrease from the opposite outer ends to the opposite inner ends;

[0009] A fixed disk with an annular structure is sleeved on the middle position of the main shaft, and a back pressure disk with an annular structure is respectively provided on both sides of the fixed disk. The back pressure disk is arranged close to the end of the extrusion spiral blade, and the fixed disk and the back pressure disk are connected by a plurality of circumferentially distributed connecting rods.

[0010] Furthermore, one end of the main shaft is connected to the driving motor, and the other end of the main shaft is connected to the bearing seat, and the driving motor and the bearing seat are both fixed to the end of the desludging cylinder.

[0011] Furthermore, a water inlet port is provided above both ends of the desludging cylinder along the length direction, and the water inlet port is communicated with the inner cavity of the desludging cylinder.

[0012] Furthermore, the fixed disk is fixedly connected to the main shaft.

[0013] Furthermore, an outer flip cover is installed on the cylinder wall above the fixed disk.

[0014] Furthermore, a mud discharge port is provided on the cylinder wall below the back pressure plate, and the mud discharge port is arranged in a one-to-one correspondence with the back pressure plate.

[0015] Furthermore, the bottoms of the two mud discharge ports are arranged in opposite directions.

[0016] Furthermore, water-permeable holes are evenly distributed on the bottom wall of the desludging cylinder.

[0017] Furthermore, two symmetrically arranged collecting shells are installed at the bottom of the main body of the desludging cylinder, and the collecting shells are buckled and fixed on the outside of the water permeable hole.

[0018] Furthermore, water outlet ports are respectively provided at the bottom of the collecting shell.

[0019] Compared with the prior art, the utility model has the following advantages after adopting the above technical solution:

[0020] Two different kinds of sewage sludge enter the two ends of the desludging cylinder respectively from the water inlet port. At the same time, the main shaft and two sets of extrusion spiral blades rotate under the action of the driving motor, and the two different kinds of sewage sludge are transported towards each other. By gradually reducing the pitch, the sludge is gradually compressed and squeezed under the action of the extrusion spiral blades. The filtrate is squeezed into the collecting shell through the water permeable holes and discharged through the water outlet port. The two kinds of dehydrated sludge are respectively discharged through the sludge discharge port, so that the desludging treatment of two different kinds of sludge can be realized through a set of power devices, thereby improving the application scope of the equipment.

[0021] The utility model is described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the utility model;

[0023] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0024] Figure 3 This is the installation diagram of the back pressure plate.

[0025] In the figure, 1-demud cylinder, 2-main shaft, 3-extrusion spiral blade, 4-driving motor, 5-water inlet port, 6-bearing seat, 7-water permeable hole, 8-collecting shell, 9-water outlet port, 10-fixed plate, 11-back pressure plate, 12-connecting rod, 13-outer flip cover, 14-mud discharge port. DETAILED DESCRIPTION

[0026] In order to have a clearer understanding of the technical features, purposes and effects of the utility model, the specific implementation methods of the utility model are now described with reference to the accompanying drawings.

[0027] like Figure 1-Figure 3 As shown together, the utility model provides a high-efficiency desludging equipment for sewage treatment, including a horizontally arranged desludging cylinder 1, a main shaft 2 coaxially arranged therewith is penetrated inside the desludging cylinder 1, two groups of symmetrically arranged extrusion spiral blades 3 are fixedly mounted on the main shaft 2, and the pitch of the two groups of extrusion spiral blades 3 gradually decreases from the opposite outer ends to the opposite inner ends.

[0028] One end of the main shaft 2 is connected to the driving motor 4 , and the other end of the main shaft 2 is connected to the bearing seat 6 . The driving motor 4 and the bearing seat 6 are both fixedly connected to the end of the desludging cylinder 1 .

[0029] A water inlet port 5 is provided above both ends of the desludging cylinder 1 along the length direction, and the water inlet port 5 is connected to the inner cavity of the desludging cylinder 1. The two water inlet ports 5 are used to introduce different types of sewage sludge into the desludging cylinder 1.

[0030] A fixed disk 10 with an annular structure is sleeved on the middle position of the main shaft 2 , and the fixed disk 10 is fixedly connected to the main shaft 2 .

[0031] A back pressure plate 11 with an annular structure is respectively provided on both sides of the fixed plate 10 , and the back pressure plate 11 is arranged close to the end of the extrusion spiral blade 3 .

[0032] The fixed plate 10 and the back pressure plate 11 are connected by a plurality of circumferentially distributed connecting rods 12. By controlling the length of the connecting rods 12, the distance between the back pressure plate 11 and the extrusion spiral blades 3 is adjusted, thereby achieving controllable adjustment of the back pressure during the sludge extrusion process.

[0033] An outer flip cover 13 is installed on the cylinder wall above the fixed disk 10. After the outer flip cover 13 is opened outwards, the length of the connecting rod 12 in the desludging cylinder 1 can be adjusted.

[0034] A mud discharge port 14 is provided on the cylinder wall below the back pressure plate 11, and the mud discharge port 14 is arranged in a one-to-one correspondence with the back pressure plate 11. The bottoms of the two mud discharge ports 14 are arranged in opposite directions, which is convenient for the subsequent output of different types of mud.

[0035] The bottom wall of the desludging cylinder 1 is evenly distributed with water-permeable holes 7 , and the bottom of the main body of the desludging cylinder 1 is equipped with two symmetrically arranged collecting shells 8 , which are buckled and fixed on the outside of the water-permeable holes 7 .

[0036] The bottom of the collecting shell 8 is respectively provided with a water outlet port 9 .

[0037] The sewage is gradually compressed and squeezed under the action of the squeezing spiral blades 3 , and the filtrate is squeezed into the collecting shell 8 through the water permeable holes 7 and discharged through the water outlet port 9 .

[0038] The specific working principle of this utility model:

[0039] Two different kinds of sewage sludge enter the two ends of the desludging cylinder 1 from the water inlet port 5 respectively. At the same time, the main shaft 2 and the two sets of extrusion spiral blades 3 rotate under the action of the driving motor 4, and the two different kinds of sewage sludge are transported towards each other. By gradually reducing the pitch, the sludge is gradually compressed and squeezed under the action of the extrusion spiral blades 3. The filtrate is squeezed into the collecting shell 8 through the water permeable hole 7 and discharged through the water outlet port 9. The two kinds of dehydrated sludge are respectively discharged through the sludge discharge port 14, so that the desludging treatment of two different kinds of sludge can be achieved through a set of power devices.

[0040] The above is an example of the best implementation of the utility model, and the parts not described in detail are common knowledge of ordinary technicians in this field. The protection scope of the utility model is based on the content of the claims, and any equivalent transformation based on the technical inspiration of the utility model is also within the protection scope of the utility model.

Claims

1. A high-efficiency desludging device for sewage treatment, characterized in that: It comprises a horizontally arranged desludging cylinder (1), wherein a main shaft (2) coaxially arranged therewith is passed through the interior of the desludging cylinder (1), and two groups of symmetrically arranged extrusion spiral blades (3) are fixedly mounted on the main shaft (2), wherein the pitch of the two groups of extrusion spiral blades (3) gradually decreases from the opposite outer ends to the opposite inner ends; A fixed disk (10) with an annular structure is sleeved on the middle position of the main shaft (2), and a back pressure disk (11) with an annular structure is respectively provided on both sides of the fixed disk (10). The back pressure disk (11) is arranged close to the end of the extrusion spiral blade (3), and the fixed disk (10) and the back pressure disk (11) are connected via a plurality of circumferentially distributed connecting rods (12).

2. The high-efficiency desludging equipment for sewage treatment according to claim 1, characterized in that: One end of the main shaft (2) is connected to the driving motor (4), and the other end of the main shaft (2) is connected to the bearing seat (6). The driving motor (4) and the bearing seat (6) are both fixed to the end of the desludging cylinder (1).

3. The high-efficiency desludging equipment for sewage treatment according to claim 1, characterized in that: A water inlet port (5) is provided above both ends of the desludging cylinder (1) in the length direction, and the water inlet port (5) is communicated with the inner cavity of the desludging cylinder (1).

4. The high-efficiency desludging equipment for sewage treatment according to claim 1, characterized in that: The fixed disk (10) is fixedly connected to the main shaft (2).

5. The high-efficiency desludging equipment for sewage treatment according to claim 1, characterized in that: An outer flip cover (13) is installed on the cylinder wall above the fixed disk (10).

6. The high-efficiency desludging equipment for sewage treatment according to claim 1, characterized in that: A mud discharge port (14) is provided on the cylinder wall below the back pressure plate (11), and the mud discharge port (14) and the back pressure plate (11) are arranged in a one-to-one correspondence.

7. A high-efficiency desludging device for sewage treatment as claimed in claim 6, characterized in that: The bottoms of the two mud discharge ports (14) are arranged in opposite directions.

8. The high-efficiency desludging equipment for sewage treatment according to claim 1, characterized in that: The bottom wall of the desludging cylinder (1) is evenly distributed with water-permeable holes (7).

9. A high-efficiency desludging device for sewage treatment as claimed in claim 8, characterized in that: Two symmetrically arranged collecting shells (8) are installed at the bottom of the main body of the desludging cylinder (1), and the collecting shells (8) are buckled and fixed on the outside of the water permeable hole (7).

10. The high-efficiency desludging equipment for sewage treatment according to claim 9, characterized in that: The bottom of the collecting shell (8) is respectively provided with a water outlet port (9).

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