Sewage treatment fine grid capable of efficiently removing impurities

Abstract

The utility model provides a sewage treatment fine grille capable of efficiently removing impurities, which relates to the technical field of sewage treatment grilles and comprises a fine grille system mounted in a support structure and driven by a driving device to rotate, a fine grille main body is a rectangular frame, and a filter main body and a front barrier cross bar are structurally arranged in the rectangular frame. Upper and lower guide plates are simultaneously inclined to the sewage inlet surface above and below the rectangular frame; in the ascending process of the fine grid, the lower flow guide plate is matched with the notch to extend the bottom, impurities are prevented from falling into a water body and can be quickly collected to the included angle between the lower flow guide plate and the notch, and when the fine grid is rotated and inverted, the inclined upper flow guide plate and the inclined lower flow guide plate prevent the problem that the impurities fall when the rotation angle is in place. Impurities are guided into the conveying belt to be discharged through cooperation with the spraying system and the downward inclined upper and lower guide plates, the problems that the treatment speed is reduced, the sewage impurity removal efficiency is reduced, and blockage is likely to occur are effectively solved, and efficient impurity removal can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment grids, in particular to a sewage treatment fine grid for efficiently removing impurities. Background Art

[0002] The fine screen is the water inlet of the sewage treatment plant and is located in the subsequent filtration layer of the coarse screen. It is used to further filter the smaller impurities in the sewage, generally including leaves, paper pieces and scum.

[0003] Most of the existing sewage treatment fine screen systems mainly include sewage inlet and drive devices, rotating screen groups and screen blocking sewage flow channels after treatment. After the fine screen intercepts impurities from the water surface, when it rotates at a high position, these fine impurities will be discharged through the spray system and slag conveyor belt arranged above and below the inverted fine screen (please refer to the attached for details). Figure 1 ); Due to the impact of water flow and the particularity of the fine screen structure, although small impurities will be stuck in the fine screen and effectively discharged through the impact of the spray system, even if the impurities that are not stuck in the fine screen for a short time will be discharged through the continuous rotation of the fine screen according to the above process; However, as mentioned above, this situation will reduce the efficiency of sewage containing a large number of small impurities when it is treated. The reasons are as follows:

[0004] 1. Impurities are stuck unstably and fall off during the rising and rotating process;

[0005] 2. The impurities are relatively large and fall due to gravity;

[0006] 3. There are too many impurities and the grille is not inserted in time;

[0007] The above-mentioned situations will lead to a decrease in processing speed, a decrease in the efficiency of sewage impurity removal, and easy blockage. Therefore, we propose a sewage treatment fine screen with high efficiency in impurity removal. Utility Model Content

[0008] The purpose of the utility model is to solve the shortcomings existing in the prior art. Due to the particularity of the fine grid structure, although small impurities will be stuck in the fine grid and effectively discharged through the impact of the spray system, even if the impurities are not stuck in the fine grid for a short time, they will be discharged through the continuous rotation of the fine grid according to the above process; but as mentioned above, this situation will reduce the efficiency of sewage containing a large number of smaller impurities during treatment. The reasons are as follows: 1. The impurities are not stuck stably and fall during the rising and rotating process; 2. The impurities are relatively large and fall due to gravity; 3. There are many impurities and the grid is not stuck in time enough; the above-mentioned situations will lead to a decrease in processing speed, a decrease in the efficiency of sewage impurity removal, and easy blockage. Therefore, we propose a sewage treatment fine grid with efficient impurity removal.

[0009] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0010] A sewage treatment fine screen with high efficiency in removing impurities comprises a fine screen system installed in a supporting structure and driven by a driving device to perform rotational motion, wherein the fine screen body is a rectangular frame, the structure within the rectangular frame is a filter body and a front barrier bar, and upper and lower guide plates are arranged on the upper and lower parts of the rectangular frame and are inclined toward the sewage inlet surface at the same time.

[0011] Furthermore, the rectangular frame is formed integrally with the filter body, and the front barrier bar is welded on the sewage inlet side of the rectangular frame.

[0012] Furthermore, the front barrier bar is a plurality of bars arranged at equal intervals and extending between the shorter ends of the rectangular frame. A notch is provided at the bottom of the front barrier bar, the height of the notch is 2 to 4 cm, and a spacing of 0.4 cm is left between the filter body and the front barrier bar.

[0013] Furthermore, the inclination angles of the upper and lower guide plates are both 25°, and the spacing between the upper and lower guide plates is one quarter of the length of the short side of the rectangular frame.

[0014] Furthermore, a plurality of groups of water inlet holes are arranged equidistantly on the surface of the upper guide plate of the upper and lower guide plates, the aperture of the water inlet holes is 0.5 cm to 1 cm, and the water inlet holes also penetrate to the other end opposite to the front blocking bar.

[0015] Furthermore, baffles are fixedly connected to both sides of the rectangular frame close to the sewage inlet surface, and the baffles are used to block the upper and lower guide plates.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] In the utility model, by adding a front blocking bar and upper and lower guide plates to the front end of the fine grid, sewage enters the front end of the front blocking bar through the gap between the upper and lower guide plates. In this process, on the basis of structural improvement, the water inlet through hole is conducive to the circulation of sewage, and the front blocking bar cooperates with the filter body to block and clamp the debris, and further differentiates the fine impurities. The fine impurities are blocked by the filter body, and the front blocking bar cooperates to clamp and block the impurities that are slightly larger than leaves and paper pieces, thereby improving the clamping stability. During the rising process of the fine grid, the lower guide plate cooperates with the notch to extend the bottom to prevent impurities from falling into the water body, and can quickly gather the impurities to the angle between the lower guide plate and the notch. When rotating and inverting, the inclined upper and lower guide plates prevent the problem of impurities falling when the rotation angle is in place, and cooperate with the spray system and the downwardly inclined upper and lower guide plates to guide the impurities to the conveyor belt for discharge, effectively solving the problems of reduced processing speed, reduced efficiency of sewage impurity removal, and easy clogging, and can remove impurities efficiently. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a basic flow diagram of the fine grid system in the prior art;

[0019] Figure 2 This is a schematic diagram of the overall structure of a sewage treatment fine grid with high efficiency in removing impurities provided by the utility model;

[0020] Figure 3 This is an inverted schematic diagram of the overall structure of a sewage treatment fine grid with high efficiency in removing impurities provided by the utility model;

[0021] Figure 4 A schematic diagram of the fine grid structure of a sewage treatment fine grid with high efficiency in removing impurities provided by the utility model.

[0022] Legend: 1. Fine grid; 2. Rectangular frame; 3. Filter body; 4. Front barrier bar; 41. Notch; 5. Baffle; 6. Upper and lower guide plates; 61. Water inlet hole. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0024] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant literature, and several embodiments of the present invention are given. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0025] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may also be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in this article includes any and all combinations of one or more related listed items.

[0027] Example 1

[0028] like Figure 2-4 As shown, the utility model provides a technical solution: a sewage treatment fine screen with high efficiency in removing impurities, comprising a fine screen 1 system installed in a supporting structure and driven by a driving device to perform rotational motion, the fine screen 1 main body is a rectangular frame 2, the size of the rectangular frame 2 is adjusted according to demand, the structure in the rectangular frame 2 is a filter main body 3 and a front barrier cross bar 4, the filter main body 3 is a conventional fine screen structure, the screen style and size are selected according to demand, and upper and lower guide plates 6 are arranged on the upper and lower sides of the rectangular frame 2 and tilted toward the sewage inlet surface at the same time.

[0029] Example 2

[0030] like Figure 2-4 As shown, the rectangular frame 2 and the filter body 3 are integrally formed, and the front barrier bar 4 is welded to the side of the rectangular frame 2 close to the sewage inlet, and the front barrier bar 4 cooperates with the filter body 3 to process impurities.

[0031] The front barrier bar 4 is composed of several bars arranged at equal intervals, and the spacing is customized according to needs, and extends to between the shorter ends of the rectangular frame 2. A notch 41 is provided at the bottom of the front barrier bar 4. The height of the notch 41 is 2 to 4 cm, which does not affect the discharge and entry of impurities and satisfies the conventional treatment of impurities by the fine grid 1. A spacing is left between the filter body 3 and the front barrier bar 4, and the spacing is 0.4 cm. The smaller spacing prevents garbage from being stuck between the two structures.

[0032] The inclination angles of the upper and lower guide plates 6 are both 25°, and the spacing between the upper and lower guide plates 6 is one quarter of the length of the short side of the rectangular frame 2, and this spacing does not affect the efficiency of sewage entry.

[0033] A plurality of water inlet holes 61 are arranged equidistantly on the surface of the upper guide plate of the upper and lower guide plates 6. The aperture of the water inlet holes 61 is 0.5 cm to 1 cm, and the water inlet holes 61 also penetrate to the other end opposite to the front barrier bar 4. Sewage and fine impurities can enter through the water inlet holes 61, while larger impurities are collected at the angle between the lower guide plate and the notch 41 through the gap 41 between the upper and lower guide plates 6.

[0034] Baffles 5 are fixedly connected to both sides of the rectangular frame 2 close to the sewage inlet surface, and the baffles 5 are used to block the upper and lower guide plates 6.

[0035] The working process of the utility model is as follows: when using a high-efficiency impurity-removing sewage treatment fine grid, the sewage first enters the front end of the front blocking bar 4 through the gap between the upper and lower guide plates 6. In this process, the water inlet hole 61 assists the sewage to enter, and the front blocking bar 4 cooperates with the filter body 3 to block and clamp the impurities, and further differentiates the fine impurities. The fine impurities are blocked by the filter body 3, and the front blocking bar 4 cooperates to clamp and block the slightly larger impurities such as leaves and paper pieces. Then, in the process of the fine grid 1 rising, the lower guide plate In conjunction with the notch 41, the bottom is extended to prevent impurities from falling into the water body, and the impurities can be quickly gathered at the angle between the lower guide plate and the notch 41. During the rotation and inversion process, the inclined upper and lower guide plates 6 prevent impurities from falling when the rotation angle is not in place. In conjunction with the operation of the spray system, the filter body 3 is impacted by water flow, so that the impurities fall out of the filter body 3 and the front barrier bar 4. The downwardly inclined upper and lower guide plates 6 guide the impurities to the conveyor belt for discharge. This reciprocating process is the sewage treatment process of the fine screen 1 and its system.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fine screen for sewage treatment with high efficiency and impurity removal, comprising a fine screen (1) system installed in a supporting structure and driven by a driving device to perform a rotary motion, characterized in that: The main body of the fine grid (1) is a rectangular frame (2), the structure inside the rectangular frame (2) is a filter body (3) and a front blocking horizontal bar (4), and upper and lower guide plates (6) are arranged on the upper and lower sides of the rectangular frame (2) and are inclined toward the sewage inlet surface.

2. The high-efficiency impurity removal fine grid for sewage treatment according to claim 1 is characterized by: The rectangular frame (2) and the filter body (3) are integrally formed, and the front barrier bar (4) is welded to the side of the rectangular frame (2) close to the sewage inlet.

3. The high-efficiency impurity removal fine grid for sewage treatment according to claim 1 is characterized by: The front barrier cross bar (4) is composed of a plurality of cross bars arranged at equal intervals and extending between the shorter ends of the rectangular frame (2). A notch (41) is provided at the bottom of the front barrier cross bar (4), and the height of the notch (41) is 2 to 4 cm. A spacing of 0.4 cm is left between the filter body (3) and the front barrier cross bar (4).

4. The high-efficiency impurity removal fine grid for sewage treatment according to claim 1 is characterized by: The inclination angles of the upper and lower guide plates (6) are both 25°, and the spacing between the upper and lower guide plates (6) is one quarter of the length of the short side of the rectangular frame (2).

5. The high-efficiency impurity removal fine grid for sewage treatment according to claim 1 is characterized by: A plurality of groups of water inlet through holes (61) are arranged equidistantly on the surface of the upper guide plate of the upper and lower guide plates (6). The diameter of the water inlet through holes (61) is 0.5 cm to 1 cm, and the water inlet through holes (61) also penetrate to the other end opposite to the front blocking horizontal bar (4).

6. The high-efficiency impurity removal fine grid for sewage treatment according to claim 1, characterized in that: Baffles (5) are fixedly connected to the two sides of the rectangular frame (2) close to the sewage inlet surface, and the baffles (5) are used to block the upper and lower guide plates (6).

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