Grid primary sedimentation device suitable for rural sewage treatment

Abstract

The utility model relates to the technical field of rural sewage treatment, in particular to a grid primary sedimentation device suitable for rural sewage treatment, which comprises a guide cylinder, a basket grid and a mud discharge pipe, the basket grid is mounted at the bottom end of the guide cylinder, the guide cylinder is sleeved on the basket grid, and the mud discharge pipe is mounted on the basket grid. The lower portion of the guide cylinder and the lifting basket grating are both located in the sludge discharge pipe, the upper portion of one side of the guide cylinder is connected with an overflow pipe, the lower portion of the side, close to the overflow pipe, of the guide cylinder is connected with a water inlet pipe, a settling zone and a sludge zone are arranged below the lifting basket grating, and an effluent weir is arranged on the upper portion of the inner wall of the sludge discharge pipe. A water outlet pipe is mounted at the upper part of one side of the sludge discharge pipe and at the position of the water outlet weir; and the overflow pipe is positioned above the water inlet pipe. According to the device, the slag filtering and screening equipment and the primary settling equipment are efficiently integrated in one device, so that one device has two purposes, the technological process is shortened, the occupied area is saved, the engineering investment and construction difficulty are reduced, and the operation management difficulty and the operation cost are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of rural sewage treatment, in particular to a grid primary sedimentation device suitable for rural sewage treatment. Background Art

[0002] In recent years, rural domestic sewage treatment has made positive progress. However, my country's sewage treatment research has mostly focused on urban sewage treatment, leaving a relatively low level of technical reserves for rural sewage treatment. Urban sewage collection and treatment technologies are not fully applicable to rural sewage treatment and cannot be completely copied and replicated.

[0003] Compared with urban sewage treatment, rural economic development is relatively slow, and financial and technical resources are relatively weak. Therefore, technologies with low construction and operating costs and simple operation and maintenance are needed. Rural households are dispersed, the terrain varies greatly, and the region is widely distributed, making construction more difficult. Site selection for specific nodes, such as sewage treatment plants and pumping stations, is difficult, often involving farmland encroachment or with very limited permitted land. Therefore, technologies with simple processes, compact structures, and simple construction are needed. Rural domestic sewage has low pollutant concentrations, large diurnal variability, and seasonal variations in operating parameters, which also influence the selection of sewage treatment processes and technical parameters. Current conventional sewage treatment processes, with their lengthy processes, extensive equipment, large land footprint, and high investment costs, are unsuitable for rural sewage treatment.

[0004] To this end, we propose a screen primary sedimentation device suitable for rural sewage treatment. Utility Model Content

[0005] The main purpose of the utility model is to provide a screen primary sedimentation device suitable for rural sewage treatment, which efficiently integrates the filtering screen residue equipment and the primary sedimentation equipment into one device, realizes two uses of one device, shortens the process flow, and can effectively solve the problems in the background technology.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A screen primary sedimentation device suitable for rural sewage treatment comprises a guide tube, a basket screen and a mud discharge pipe, wherein the bottom end of the guide tube is provided with a basket screen, the guide tube is sleeved on the basket screen, the lower part of the guide tube and the basket screen are both located in the mud discharge pipe, the upper part of one side of the guide tube is connected to an overflow pipe, the lower part of the guide tube close to the overflow pipe is connected to a water inlet pipe, a sedimentation area and a sludge area are respectively provided below the basket screen, an outlet weir is provided on the upper part of the inner wall of the mud discharge pipe, and an outlet pipe is installed on the upper part of one side of the mud discharge pipe at the position of the outlet weir.

[0008] Specifically, a clamping ring for limiting the position of the basket lifting grid is provided on the inner wall of the bottom end of the guide tube, and the clamping ring is sleeved on the upper outer portion of the basket lifting grid.

[0009] Specifically, the overflow pipe is located above the water inlet pipe, and the water inlet pipe and the overflow pipe are arranged relatively parallel.

[0010] Specifically, the overflow pipe and the water inlet pipe both pass through the mud discharge pipe at one end away from the guide tube.

[0011] Specifically, the sedimentation zone is located above the sludge zone.

[0012] Specifically, a plurality of grid holes are provided on the outer side of the basket grille.

[0013] Beneficial effects of the utility model:

[0014] The utility model describes a screen primary sedimentation device suitable for rural sewage treatment, which efficiently integrates the filtering screen residue equipment and the primary sedimentation equipment into one device, thus realizing two uses of one device, shortening the process flow, saving floor space, reducing project investment and construction difficulty, and reducing operation management difficulty and operation cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] In the figure: 1. Water inlet pipe; 2. Diversion tube; 3. Basket screen; 4. Sedimentation area; 5. Sludge area; 6. Sludge discharge pipe; 7. Outlet weir; 8. Outlet pipe; 9. Overflow pipe. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0019] As an embodiment of the present invention, Figure 1 As shown, the utility model describes a grid primary sedimentation device suitable for rural sewage treatment, comprising a guide tube 2, a basket grid 3 and a mud discharge pipe 6. The basket grid 3 is installed at the bottom end of the guide tube 2, and the guide tube 2 is sleeved on the basket grid 3. The lower part of the guide tube 2 and the basket grid 3 are both located in the mud discharge pipe 6. The upper part of one side of the guide tube 2 is connected to the overflow pipe 9, and the lower part of the side of the guide tube 2 close to the overflow pipe 9 is connected to the water inlet pipe 1. A sedimentation area 4 and a sludge area 5 are respectively provided below the basket grid 3. An outlet weir 7 is provided on the upper part of the inner wall of the mud discharge pipe 6, and an outlet pipe 8 is installed on the upper part of one side of the mud discharge pipe 6 at the position of the outlet weir 7.

[0020] During use, the basket grille 3 filters the screen residue and intercepts the screen residue in the sewage. The basket grille 3 is taken out of the guide tube 2 regularly (3-7 days), and the intercepted screen residue is cleaned and then put back into the guide tube 2.

[0021] The utility model also includes that the inner wall of the bottom end of the guide tube 2 is provided with a clamping ring for limiting the position of the basket grille 3, and the clamping ring is sleeved on the upper outer side of the basket grille 3.

[0022] The guide tube 2 is a cylindrical tube with a diameter of generally 400-600mm and a water flow velocity of about 0.1m / s;

[0023] The basket grille 3 is a cylindrical barrel with a barrel diameter 80-150mm smaller than the guide tube 2. The barrel body is evenly distributed with grid holes with a diameter of 5-15mm. The water flow velocity of the grid holes is about 0.1m / s. The barrel body height is 400-600mm, and the barrel bottom is 150-300mm higher than the sludge area 5.

[0024] The present invention further comprises that the overflow pipe 9 is located above the water inlet pipe 1 , and the water inlet pipe 1 and the overflow pipe 9 are arranged relatively parallel.

[0025] The present invention also includes that the overflow pipe 9 and the end of the water inlet pipe 1 away from the guide tube 2 both pass through the mud discharge pipe 6.

[0026] The present invention further comprises that the sedimentation zone 4 is located above the sludge zone 5;

[0027] The plane size of the sedimentation area 4 is generally square or circular, its side length or diameter is generally 1.0-5.0m, and the surface hydraulic load is generally 1-3m3 / m2·h; when the side length or diameter of the sedimentation area 4 is generally 1.0-2.5m, one sludge area 5 is set; when the side length or diameter of the sedimentation area 4 is generally 2.5-5.0m, four sludge areas 5 are set.

[0028] The utility model also includes that a plurality of grid holes are provided on the outer side of the basket grille 3 .

[0029] When the utility model is in use, sewage enters the guide tube 2 through the water inlet pipe 1, and is smoothly guided into the basket grille 3 under the water guiding and stabilizing effect of the guide tube 2; the basket grille 3 intercepts the screen residue in the sewage under the action of filtering the screen residue, and the basket grille 3 is regularly (3-7 days) taken out of the guide tube 2, and the intercepted screen residue is cleaned and then returned to the guide tube 2; at the same time, the aperture of the screen holes set on the basket grille 3 is used to evenly distribute the sewage to the bottom of the sedimentation area 4; in the sedimentation area 4, large particles in the sewage sink to the sludge area 5, and the supernatant rises and flows into the outlet weir 7, and is finally discharged through the outlet pipe 8; the sludge sinks to the sludge area 5 and is discharged through the bottom end of the sludge discharge pipe 6;

[0030] When an abnormal situation occurs and the basket grille 3 is seriously blocked, the water level in the guide tube 2 rises and is discharged through the overflow pipe 9 to avoid sewage overflow.

[0031] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A screen primary settling device suitable for rural sewage treatment, characterized in that: The invention comprises a guide tube (2), a basket grille (3) and a mud discharge pipe (6); the bottom end of the guide tube (2) is provided with a basket grille (3); the guide tube (2) is sleeved on the basket grille (3); the lower part of the guide tube (2) and the basket grille (3) are both located in the mud discharge pipe (6); the upper part of one side of the guide tube (2) is connected to an overflow pipe (9); the lower part of the side of the guide tube (2) close to the overflow pipe (9) is connected to a water inlet pipe (1); a sedimentation area (4) and a sludge area (5) are respectively provided below the basket grille (3); an outlet weir (7) is provided on the upper part of the inner wall of the mud discharge pipe (6); and an outlet pipe (8) is installed on the upper part of one side of the mud discharge pipe (6) at the position where the outlet weir (7) is located.

2. A screen primary sinking device suitable for rural sewage treatment according to claim 1, characterized in that: The inner wall of the bottom end of the guide tube (2) is provided with a snap ring for limiting the position of the basket grille (3), and the snap ring is sleeved on the upper outer portion of the basket grille (3).

3. A screen primary sinking device suitable for rural sewage treatment according to claim 1, characterized in that: The overflow pipe (9) is located above the water inlet pipe (1), and the water inlet pipe (1) and the overflow pipe (9) are arranged relatively parallel.

4. A screen primary sinking device suitable for rural sewage treatment according to claim 1, characterized in that: The overflow pipe (9) and the water inlet pipe (1) both pass through the mud discharge pipe (6) at one end away from the guide tube (2).

5. The screen primary settling device suitable for rural sewage treatment according to claim 1, characterized in that: The sedimentation zone (4) is located above the sludge zone (5).

6. The screen primary settling device suitable for rural sewage treatment according to claim 1, characterized in that: A plurality of grid holes are provided on the outer side of the basket grid (3).

Images