Sludge tank upper opening grating

Abstract

The utility model relates to the technical field of grilles, and provides a sludge tank upper opening grille which comprises a frame internally provided with a filtering structure, the frame is obliquely installed on an upper opening of a sludge tank, and when the frame is in an inclined state, one side, close to a water inlet, of the frame is provided with a water guide groove; the water guide groove comprises a lower arc groove close to the water inlet direction and an upper arc groove connected with the lower arc groove and close to the interior of the frame, so that the flow speed of sewage flowing through the water guide groove is reduced. The utility model overcomes the defects in the prior art, has the advantages of reasonable design, compact structure, inclined installation of the frame, flushing away sludge and impurities close to the water inlet side of the filtering structure by virtue of gravity and sewage impact force, creating conditions for subsequent treatment, reducing the flow rate of sewage, changing the flow direction, reducing the impact on the filtering structure and prolonging the service life of the filtering structure by virtue of the water chute; and the sewage can be fully filtered.

Description

Technical Field

[0001] This utility model relates to the technical field of bar screen equipment, specifically to a bar screen at the top of a sludge tank. Background Technology

[0002] In the field of wastewater treatment, sludge tanks are key facilities for treating sludge. Wastewater contains a large number of large particulate impurities. Currently, screens are installed at the inlet of sludge tanks to intercept larger particles and prevent sludge pumps from becoming clogged.

[0003] Existing sludge tank inlet bar screens lack effective guidance for the flow velocity and direction of sewage. Sludge directly impacts the filter structure, which not only shortens the service life of the filter structure but also reduces sewage treatment efficiency. To address this, we propose a new type of sludge tank inlet bar screen. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the shortcomings of the prior art, this utility model provides a sludge tank top bar to solve the above-mentioned problems in the prior art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a sludge tank upper inlet grille, comprising a frame with a built-in filter structure, the frame being installed at an incline at the upper inlet of the sludge tank, and in the inclined state, a water guide channel is provided on the side of the frame near the inlet, the water guide channel comprising a lower arc groove facing the water inlet direction and an upper arc groove connected to the lower arc groove and facing the inside of the frame, so as to reduce the flow velocity of sewage flowing through the water guide channel.

[0008] Furthermore, the filter structure built into the frame consists of equidistant railings, with mesh balls placed on adjacent railings, and the distance between adjacent railings being less than the diameter of the mesh balls.

[0009] Furthermore, the railing is detachably connected to the frame, and notches are provided on the lower sides of both ends of the railing. Several locking blocks are symmetrically arranged inside the frame to fit the notches.

[0010] Furthermore, the card block includes a connecting block connected to the inner wall of the frame and a pair of elastic support blocks disposed on the top of the connecting block. There is a gap between the pair of elastic support blocks, and the top of the opposite side of the two blocks is rounded. The maximum distance between the outer walls of the two blocks is greater than the width of the gap.

[0011] Furthermore, the bottom of the side wall of the connecting block and the lower part of the side wall of the elastic support block, which are rounded, are inclined outwards.

[0012] Furthermore, the frame is installed at an inclination angle of 15-30° at the top of the sludge tank.

[0013] Furthermore, the grid sphere is composed of uniformly distributed metal strips, which interweave to form a polyhedral structure, giving it an overall spherical shape, with a hollow interior.

[0014] (III) Beneficial Effects

[0015] This utility model embodiment provides a sludge tank upper inlet bar. It has the following beneficial effects:

[0016] 1. The frame is installed at an angle, using gravity and the impact force of sewage to flush away sludge and impurities near the inlet side of the filter structure, creating conditions for subsequent treatment. The water guide channel reduces the sewage flow rate and changes the flow direction, reducing the impact on the filter structure, extending its service life, and facilitating thorough sewage filtration.

[0017] 2. Built-in equidistant railings, on which the mesh balls are made of metal strips to form a multi-faceted spherical hollow structure with a large surface area, providing more filtration area to effectively intercept solid particles and impurities. The mesh balls can also slide to remove impurities from the gaps between the railings.

[0018] 3. The railing and frame are detachably connected, and installation and disassembly are achieved through the cooperation of notches and locking blocks. The operation is simple and convenient, and it is easy to clean, replace and maintain the railing and mesh ball. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the front view of the frame structure of this utility model;

[0021] Figure 3 This is a top view of the frame structure of this utility model;

[0022] Figure 4 This is a three-dimensional schematic diagram of the railing structure of this utility model;

[0023] Figure 5 This is a three-dimensional schematic diagram of the card block structure of this utility model;

[0024] Figure 6 This is a planar schematic diagram of the card block structure of this utility model.

[0025] In the diagram: 1. Frame; 21. Lower arc groove; 22. Upper arc groove; 3. Railing; 31. Notch; 4. Grid ball; 5. Block; 51. Connecting block; 52. Elastic support block. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] See attached document Figure 1-6 A sludge tank top screen includes a frame 1 with a built-in filter structure. The frame 1 is installed at an angle at the top of the sludge tank. When sewage flows through the filter structure inside the frame 1, the sludge and impurities near the inlet of the filter structure can be washed away by gravity and the impact force of the sewage flow, creating favorable conditions for subsequent sewage treatment. In the inclined state, a water guide channel is provided on the side near the inlet of the frame 1. The water guide channel includes a lower arc groove 21 facing the water inlet direction and an upper arc groove 22 connected to the lower arc groove 21 and facing the inside of the frame 1, so as to reduce the flow velocity of sewage flowing through the water guide channel. When sewage enters the water guide channel, it will gradually change its flow direction and speed along its arc structure, effectively reducing the impact of sewage on the filter structure, thereby extending the service life of the filter structure.

[0028] In this embodiment, the filter structure built into the frame 1 is a railing 3 arranged at equal intervals. A grid ball 4 is placed on the adjacent railing 3. The grid ball 4 is composed of uniformly distributed metal strips. The metal strips are interwoven to form a polyhedral structure. The overall shape is spherical and the interior is hollow. The grid ball 4 has a large surface area, which can increase the filtration area and effectively intercept solid particles and impurities in sewage.

[0029] The spacing between adjacent railings 3 is smaller than the diameter of the mesh ball 4 to prevent the mesh ball 4 from falling below the filter structure. At the same time, there is a certain gap between adjacent mesh balls 4 so as not to hinder the mesh ball 4 from sliding between adjacent railings 3. The mesh ball 4 sliding between adjacent railings 3 can also effectively remove impurities in the gap between adjacent railings 3.

[0030] In this embodiment, the railing 3 and the frame 1 are detachably connected, which facilitates the cleaning, replacement and maintenance of the railing 3 and the mesh ball 4. Notches 31 are provided on the lower side of both ends of the railing 3. Several locking blocks 5 are symmetrically arranged inside the frame 1 to cooperate with the notches 31. When installing the railing 3, align the notches 31 of the railing 3 with the locking blocks 5 on both sides, and then press the railing 3 down so that the locking blocks 5 are relatively inserted into the notches 31, thus realizing the installation of the railing 3 and the frame 1. When it is necessary to disassemble the railing 3, simply pull the railing 3 upward so that the locking blocks 5 are relatively dislodged from the notches 31. This simple connection method is not only convenient to operate, but also firmly connected.

[0031] In this embodiment, the locking block 5 includes a connecting block 51 connected to the inner wall of the frame 1 and a pair of elastic support blocks 52 disposed on the top of the connecting block 51. There is a gap between the pair of elastic support blocks 52, and the top of the opposite side of the two is rounded. The rounded corners make the railing 3 easier to install and disassemble. The maximum distance between the outer walls of the two is greater than the width of the notch 31. When the notch 31 of the railing 3 is aligned with the locking block 5 and pressed down, the elastic support block 52 is squeezed and undergoes elastic deformation. The elastic support block 52 can be smoothly locked into the notch 31. After the railing 3 is installed in place, the elastic support block 52 returns to its original shape, and its top is tightly fitted with the inner wall of the notch 31 to prevent the railing 3 from moving upward and to keep the railing 3 from loosening or falling off under the impact of sewage.

[0032] In this embodiment, the bottom of the side wall of the connecting block 51 and the bottom of the side wall of the elastic support block 52, which is rounded, are inclined outward. The overall width of the connecting block 51 is smaller than the width inside the notch 31, so as to avoid the connecting block 51 squeezing the inside of the notch 31.

[0033] In this embodiment, the frame 1 is installed at an inclination angle of 15-30° at the top of the sludge tank, allowing the sewage to flow smoothly through the screen with the help of gravity, while the water guide channel and the filter structure can play their full role.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0035] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A sludge tank inlet bar, comprising a frame (1) with a built-in filter structure, characterized in that: The frame (1) is installed at an incline at the top of the sludge tank. When the frame (1) is in an inclined state, a water guide channel is provided on the side near the water inlet. The water guide channel includes a lower arc groove (21) facing the water inlet direction and an upper arc groove (22) connected to the lower arc groove (21) and facing the inside of the frame (1), so as to reduce the flow velocity of sewage flowing through the water guide channel.

2. The sludge tank inlet bar as described in claim 1, characterized in that: The filter structure built into the frame (1) consists of railings (3) arranged at equal intervals, with mesh balls (4) placed on adjacent railings (3), and the distance between adjacent railings (3) is less than the diameter of the mesh balls (4).

3. The sludge tank inlet bar as described in claim 2, characterized in that: The railing (3) is detachably connected to the frame (1). The lower sides of both ends of the railing (3) are provided with notches (31). The frame (1) is symmetrically provided with several locking blocks (5) for matching the notches (31).

4. The sludge tank inlet bar as described in claim 3, characterized in that: The card block (5) includes a connecting block (51) connected to the inner wall of the frame (1) and a pair of elastic support blocks (52) set on the top of the connecting block (51). There is a gap between the pair of elastic support blocks (52), and the top of the opposite side of the two is rounded. The maximum distance between the outer walls of the two is greater than the width of the notch (31).

5. The sludge tank inlet bar as described in claim 4, characterized in that: The bottom of the side wall of the connecting block (51) and the bottom of the side wall of the elastic support block (52) with rounded corners are inclined outwards.

6. The sludge tank inlet bar as described in claim 1, characterized in that: The frame (1) is installed at an inclination angle of 15-30° at the top of the sludge tank.

7. The sludge tank inlet bar as described in claim 2, characterized in that: The grid sphere (4) is composed of uniformly distributed metal strips, which interweave to form a polyhedral structure, giving it an overall spherical shape, with a hollow interior.

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