Municipal sewage treatment device

Abstract

The invention provides a municipal sewage treatment device, and belongs to the technical field of municipal sewage treatment.The municipal sewage treatment device comprises a water tank and a rack arranged in the water tank, a transmission unit is arranged in the rack, a fishing grating is arranged on the transmission unit, a filtering grating matched with the fishing grating is arranged at the bottom of the rack, and the filtering grating is in a U shape; a salvage grating is arranged on the rack, an overturning grating capable of being matched with the salvage grating is hinged to the rack, grid bars of the salvage grating and grid bars of the overturning grating are arranged in a staggered mode at intervals one by one, the overturning grating is used for extruding and limiting impurities, and a driving unit used for driving the overturning grating to overturn is arranged between the overturning grating and the rack; a filtering grid is arranged in the water tank, and grid bars of the filtering grid and grid bars of the overturning grid are arranged in a staggered mode at intervals one by one; the fishing grating can quickly discharge impurities at the front end of the filtering grating, so that the probability that the filtering grating is blocked is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of municipal sewage treatment, and in particular to a municipal sewage treatment device. Background Art

[0002] The main source of municipal sewage is domestic sewage. The wastewater generated by people in their daily life activities is mainly domestic waste and human excrement, including wastewater from kitchen washing, showering, laundry, etc. and sewage from flushing toilets. Municipal sewage treatment refers to the treatment of urban domestic sewage to meet environmental protection standards and achieve the recycling of water resources. Before municipal sewage treatment, a channel screen machine is usually required to perform preliminary filtration treatment on the sewage in order to remove large pieces of matter and particles such as sand and stone in the sewage.

[0003] However, when the grille machine is filtering and salvaging impurities such as branches and leaves, the intercepted branches and leaves will be lifted and discharged through the grille salvage component. However, due to the disturbance of water flow during salvage and the alternating stacking of leaves, some leaves may fall off the grille salvage component, and these leaves will gather again at the front end of the grille interception net. When too many impurities accumulate at the grille interception net, it may affect the filtering effect of the grille interception net.

[0004] Referring to the Chinese patent document with announcement number CN117357955B, entitled "Anti-blocking structure and method for a coarse and fine screen machine for sewage treatment", the invention comprises an interception box, a crushing assembly and an adjustment assembly. The crushing assembly can pre-crush larger garbage in the inner cavity of the water pool, and then the crushed garbage in the sewage can be salvaged through the screen salvaging assembly, thereby achieving the purpose of preventing garbage from being trapped and blocked.

[0005] Referring to the above technical solution, the stacking of floating leaves can be reduced by crushing impurities such as leaves through the crushing component, which makes it easier for the subsequent grille salvage component to discharge the crushed leaves and other garbage. However, since the crushed leaves are more likely to absorb water, the crushed leaves are more likely to sink to the bottom of the water. At this time, when the grille salvage component salvages the crushed leaves from the bottom, under the action of the water flow, the water flow speed at the edge is usually faster, which will cause the leaves at the edge to be more easily impacted and fall off the grille salvage component, and some of the crushed leaves will still accumulate on the bottom of the water, which may still cause the grille interception net to be blocked. Summary of the invention

[0006] In view of this, the present application provides a municipal sewage treatment device, which is mainly used to solve the problem that leaves piled up at the front end of the screen machine are difficult to discharge, causing blockage of the screen machine.

[0007] In order to solve the above technical problems, the present application provides a municipal sewage treatment device, including a water tank and a frame arranged inside the water tank, wherein a transmission unit is arranged inside the frame, a salvage grille is arranged on the transmission unit, and the transmission unit is used to drive the salvage grille to move, and a filter grille cooperating with the salvage grille is arranged at the bottom of the frame, and the filter grille is arranged in a U shape, characterized in that: The frame is hinged with a flip grille that can cooperate with the salvage grille, the bars of the salvage grille and the bars of the flip grille are staggered in a one-to-one interval manner, the flip grille is used to squeeze and limit the impurities, and a driving unit for driving the flip grille to flip is provided between the flip grille and the frame; A filter grid is provided inside the water tank for filtering impurities at the bottom of the water in layers, and the bars of the filter grid and the bars of the flip grid are staggered in a one-to-one interval manner.

[0008] By adopting the above technical solution, the driving unit drives the flip grille to flip upward so that the flip grille is parallel to the filter grille, and the impurities intercepted by the filter grille on the surface of the water tank are gathered. The driving unit drives the flip grille to flip downward so that the impurities filtered at the upper end of the filter grille can be gathered to the side close to the filter grille, making it convenient for the subsequent salvage grille to quickly discharge the impurities at the front end of the filter grille.

[0009] Optionally, the transmission unit includes a transmission roller, a transmission belt, a mounting seat and a motor. The transmission rollers are evenly arranged at the four corners of the frame. The four transmission rollers are connected by a transmission belt. Mounting seats are evenly spaced on the outer sides of two front and rear symmetrical transmission belts. A salvage grille is hinged between the front and rear corresponding mounting seats through a torsion spring. The motor is installed on the front side of the frame through a flange to drive the transmission rollers to rotate.

[0010] By adopting the above technical solution, the motor drives the transmission roller and the transmission belt to drive, thereby driving the salvage grid between the mounting seats to salvage the impurities.

[0011] Optionally, limit strips are provided at both the front and rear ends of the hinge shaft of the salvage grille, and limit blocks corresponding to the limit strips are provided on the outer side surfaces of the mounting seat.

[0012] By adopting the above technical solution, the rotation direction of the salvage grid can be limited through the abutment between the limit strip and the limit block.

[0013] Optionally, a round rod is provided at the upper end of the filtering grid, and the round rod can abut against the salvaging grid.

[0014] By adopting the above technical solution, when the salvage grille is transmitted to contact the round rod, under the limiting effect of the round rod, the salvage grille rotates clockwise around its own hinge axis for a certain angle, thereby reducing the probability of impurities on the upper end of the salvage grille falling.

[0015] Optionally, the driving unit includes an electric push rod, a sliding rod, a rack and a gear. The electric push rod is arranged on the outside of the frame. The telescopic end of the electric push rod is provided with a sliding rod. The sliding rod is slidably connected to a sliding hole arranged on the outside of the frame. The end of the sliding rod is provided with a rack. The end of the hinge shaft of the flip grille is provided with a gear meshing with the rack.

[0016] By adopting the above technical solution, the sliding rod and the rack are driven to move by the electric push rod, and the flip grille is driven to flip through the meshing of the rack and the gear.

[0017] Optionally, a guide plate capable of abutting against the salvage grid is provided in the middle of the frame.

[0018] By adopting the above technical solution, when the salvage grille moves, the ends of the bars of the salvage grille contact the guide plates, so that the salvage grille can be kept in an inclined state to transport the salvaged impurities.

[0019] Optionally, the inner wall of the filtering grid is arranged in an arc shape, and an arc-shaped notch cooperating with the salvage grid is arranged on the right side of the grid.

[0020] By adopting the above technical solution, the salvage grille cooperates and abuts against the inner wall of the arc-shaped notch outside the filter grille when it moves, so that the salvage grille can salvage the bottom of the water tank without dead angles.

[0021] Optionally, a drainage grille is provided in the water outlet at the upper right end of the water tank, and the bars of the drainage grille and the bars of the salvage grille are staggered in a one-to-one manner.

[0022] By adopting the above technical solution, the wastewater discharged from the sink can be filtered twice.

[0023] In summary, compared with the prior art, the present application includes at least one of the following beneficial technical effects: 1. By turning the flip grille upwards, the flip grille is made parallel to the front side of the filter grille, and the impurities intercepted by the filter grille on the surface of the water tank are gathered and squeezed. When the salvage grille passes between the flip grille and the filter grille, the flip grille and the filter grille can be cleaned, and the impurities at the front end of the filter grille can be quickly discharged. At the same time, when the salvage grille is driven to contact the round rod at the upper end of the filter grille, the salvage grille rotates clockwise at a certain angle, which can make the angle between the salvage grille and the filter grille smaller, thereby reducing the probability of impurities on the upper end of the salvage grille falling.

[0024] 2. By flipping the flip grille downward, the impurities on the top of the filter grille can be scraped off and gathered at the bottom of the sink. The flip grille and the filter grille are staggered to clean each other, which is conducive to the rapid removal of the salvage grille. When the salvage grille passes by, the salvage grille cooperates with the arc-shaped notch to enable the salvage grille to salvage the bottom of the sink without dead angles. The salvage grille cooperates with the inclined flip grille to gather the salvaged impurities to the center of the salvage grille, reducing the probability of impurities on the top of the salvage grille falling. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the structure of a municipal sewage treatment device for this application; Figure 2 This is a schematic diagram of the structure inside the water tank of this application; Figure 3 This is a schematic diagram of the structure in which the flip grille of this application is flipped upward; Figure 4 This is a schematic diagram of the structure in which the flip grille is flipped downwards for this application; Figure 5 This is a schematic diagram of the structure of the salvage grid and round rods in this application; Figure 6 For this application Figure 1 Schematic diagram of the local enlarged structure at point A in the middle.

[0026] Explanation of the reference numerals: 1. water tank; 2. frame; 3. transmission unit; 31. transmission roller; 32. transmission belt; 33. mounting seat; 331. limit block; 34. motor; 4. salvage grille; 41. limit bar; 5. filter grille; 51. round rod; 6. flip grille; 7. gear; 8. drive unit; 81. electric push rod; 82. slide rod; 83. rack; 9. filter grille; 91. arc-shaped notch; 10. drainage grille. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the embodiments of the present application. Figure 1-Figure 6 , the technical scheme of the embodiment of the present application is clearly and completely described. Obviously, the described embodiment is a part of the embodiment of the present application, not all of the embodiments. Based on the described embodiment of the present application, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of this application.

[0028] Reference Figure 1 and Figure 2 This embodiment provides a municipal sewage treatment device, including a water tank 1 and a frame 2, a salvaging component and a flipping component arranged inside the water tank.

[0029] Among them, refer to Figure 1 , Figure 2and Figure 6 A filter grille 5 is provided inside the frame 2, and the filter grille 5 is arranged in a U shape.

[0030] Among them, the salvage component includes a transmission roller 31, a transmission belt 32, a motor 34 and a salvage grid 4. The transmission rollers 31 are evenly arranged at the four corners of the frame 2. The transmission belts 32 are connected to the four transmission rollers 31. The outer sides of the two front and rear symmetrical transmission belts 32 are evenly spaced with mounting seats 33. The salvage grid 4 is hinged between the front and rear corresponding mounting seats 33 through a torsion spring. The motor 34 is installed on the front side of the frame 2 through a flange, and is used to drive the transmission roller 31 to rotate, so that the mounting seat 33 outside the transmission belt 32 and the salvage grid 4 are driven clockwise, so that the impurities in the water tank 1 are brought out through the transmission of the salvage grid 4.

[0031] Among them, refer to Figure 1 and Figure 2 The flip assembly includes a flip grille 6 and a drive unit 8. The frame 2 is hinged with a flip grille 6 that can cooperate with the salvage grille 4 for squeezing and limiting impurities. The drive unit 8 includes an electric push rod 81, a slide bar 82, a rack 83 and a gear 7. The electric push rod 81 is arranged on the outside of the frame 2. The telescopic end of the electric push rod 81 is provided with a slide bar 82. The slide bar 82 is slidably connected with the sliding hole arranged on the outside of the frame 2. The end of the slide bar 82 is provided with a rack 83. The end of the hinge shaft of the flip grille 6 is provided with a gear 7 meshing with the rack 83. When the electric push rod 81 is working, the rack 83 on the same side is driven to move through the slide bar 82, and the meshing of the rack 83 with the gear 7 can drive the flip grille 6 to flip with its own hinge axis.

[0032] When the water tank 1 flows from front to back toward the filter grille 5, the filter grille 5 can intercept the impurities floating in the water. At this time, the flip grille 6 is in a horizontal state and is located below the sewage surface. As the motor 34 works, the drive roller 31 and the drive belt 32 are driven to transmit, thereby driving the salvage grille 4 to transmit clockwise. When the salvage grille 4 moves to the upper end of the flip grille 6 and below the sewage surface, the electric push rod 81 works to drive the slide bar 82 and the rack 83 to move downward, and the rack 83 is engaged with the gear 7 at the end of the flip grille 6, driving the flip grille 6 to flip clockwise around its own hinge axis as the center, so that the flip grille 6 is parallel to the front side of the filter grille 5. At this time, the impurities floating on the sewage surface are squeezed by the flip grille 6 and the filter grille 5. When the salvage grille 4 passes between the flip grille 6 and the filter grille 5, the ends of the salvage grille 4 are respectively inserted into the inside of the flip grille 6 and the filter grille 5 to bring out the squeezed impurities.

[0033] Reference Figure 1 , Figure 5 and Figure 6Limiting strips 41 are provided at both ends of the hinge axis of the salvage grille 4, and limiting blocks 331 corresponding to the limiting strips 41 are provided on the outer side of the mounting seat 33. A round rod 51 is provided on the upper end of the left side surface of the filter grille 5, and a guide plate capable of abutting against the salvage grille 4 is provided in the middle of the frame 2.

[0034] When the salvage grille 4 moves, the limit bar 41 contacts the limit block 331, which can limit the counterclockwise rotation of the salvage grille 4. Under the elastic support of the torsion spring, the salvage grille 4 remains perpendicular to the filtering grille 5, which is convenient for salvaging impurities. When the salvage grille 4 moves to the front end of the filtering grille 5, the bar ends of the salvage grille 4 contact the round rod 51 at the upper end of the filtering grille 5, so that the salvage grille 4 rotates clockwise around its own hinge axis for a certain angle, thereby reducing the angle between the salvage grille 4 and the filtering grille 5, and the salvage grille 4 continues to transmit. The bar ends of the salvage grille 4 abut against the guide plate in the middle of the frame 2, which can keep the salvage grille 4 in an inclined state, and can reduce the probability of impurities falling from the upper end of the salvage grille 4 while squeezing the impurities.

[0035] Reference Figure 2 , Figure 3 and Figure 4 A filter grille 9 is provided inside the water tank 1 for filtering impurities at the bottom of the water in layers. The bars of the filter grille 9 and the bars of the flip grille 6 are staggered in a one-to-one manner. The inner wall of the filter grille 9 is arranged in an arc shape. An arc-shaped notch 91 cooperating with the salvage grille is provided on the right side of the filter grille 9.

[0036] When the flip grille 6 flips downward, the bars of the flip grille 6 and the bars of the filter grille 9 are staggered one by one and can clean each other. At the same time, the flipping of the flip grille 6 can scrape the impurities on the surface of the filter grille 9 toward the filter grille 5 and scrape the accumulated impurities to the bottom of the water tank 1, which is conducive to the rapid removal of the salvage grille 4. When the salvage grille 4 passes through the filter grille 9, the salvage grille 4 cooperates and abuts with the arc-shaped notch 91 on the outside of the filter grille 9, so that the salvage grille 4 can salvage the bottom of the water tank 1 without dead angles. With the transmission of the salvage grille 4, the salvage grille 4 cooperates with the inclined flip grille 6 to gather the salvaged impurities to the center of the salvage grille 4, reducing the probability of impurities on the upper end of the salvage grille 4 falling.

[0037] Reference Figure 2 and Figure 3 A drainage grille 10 is provided in the water outlet at the upper right end of the water tank 1, which can perform secondary filtration on the wastewater discharged from the water tank 1. When the salvage grille 4 moves to the drainage grille 10, the bars of the salvage grille 4 are interlaced with the bars of the drainage grille 10, so that the impurities blocked inside the drainage grille 10 can be cleaned.

[0038] The implementation principle of a municipal sewage treatment device in the embodiment of the present application is: The sewage in the water tank 1 flows from front to back to the filter grille 5, and the filter grille 5 intercepts the floating impurities in the water to the left side of the filter grille 5. At this time, the flip grille 6 is in a horizontal state and is located below the sewage surface. As the motor 34 works, the transmission roller 31 and the transmission belt 32 are driven to drive, thereby driving the salvage grille 4 to drive clockwise. When the salvage grille 4 moves to the upper end of the flip grille 6 and below the sewage surface, the electric push rod 81 works to drive the slide bar 82 and the rack 83 to move downward, and the rack 83 is meshed with the gear 7 to drive the flip grille 6 to flip upward. The flip grille 6 is rotated to make the front side of the filter grille 5 parallel to each other. At this time, the impurities floating on the sewage surface are squeezed by the flip grille 6 and the filter grille 5. When the salvage grille 4 passes between the flip grille 6 and the filter grille 5, the bars of the salvage grille 4 are respectively inserted into the inside of the flip grille 6 and the filter grille 5. At this time, the limit bar 41 contacts the limit block 331, which can limit the counterclockwise rotation of the salvage grille 4. Under the elastic support of the torsion spring, the salvage grille 4 is kept perpendicular to the filter grille 5, and the squeezed impurities are brought out through the salvage grille 4.

[0039] When the salvage grille 4 moves to the upper left side surface of the filtering grille 5, the end of the salvage grille 4 contacts the round rod 51 at the upper end of the filtering grille 5, causing the salvage grille 4 to rotate clockwise at a certain angle around its own hinge axis, thereby reducing the angle between the salvage grille 4 and the filtering grille 5. As the salvage grille 4 moves, the ends of the bars of the salvage grille 4 contact the guide plate in the middle of the frame 2, so that the salvage grille 4 remains in an inclined state, which can reduce the probability of impurities falling from the upper end of the salvage grille 4 while squeezing the impurities.

[0040] When the flip grille 6 flips downward, the bars of the flip grille 6 and the bars of the filter grille 9 are staggered one by one, and can clean each other. At the same time, the impurities accumulated on the surface of the filter grille 9 are scraped to the bottom of the water tank 1, which is conducive to the rapid removal of the salvage grille 4. When the salvage grille 4 passes by, the salvage grille 4 cooperates and abuts with the arc-shaped notch 91, so that the salvage grille 4 can salvage the bottom of the water tank 1 without dead angles. As the salvage grille 4 continues to move, the salvage grille 4 cooperates with the inclined flip grille 6 to gather the salvaged impurities to the center of the salvage grille 4, reducing the probability of impurities on the upper end of the salvage grille 4 falling.

[0041] Finally, a drainage grille 10 is provided in the water outlet at the upper right end of the water tank 1, which can perform secondary filtration on the wastewater discharged from the water tank 1. When the salvage grille 4 moves to the position of the drainage grille 10, the bars of the salvage grille 4 can be partially inserted into the drainage grille 10 to clean the drainage grille 10 and avoid clogging of the drainage grille 10.

[0042] In addition, it should be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0043] The above is a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles described in the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A municipal sewage treatment device, comprising a water tank (1) and a frame (2) arranged therein, wherein a transmission unit (3) is arranged inside the frame (2), a salvage grille (4) is arranged on the transmission unit (3), and the transmission unit (3) is used to drive the salvage grille (4) to move, and a filter grille (5) is arranged at the bottom of the frame (2) to cooperate with the salvage grille (4), and the filter grille (5) is arranged in a U shape, characterized in that: The frame (2) is hingedly provided with a flip grille (6) capable of cooperating with a salvage grille (4); the bars of the salvage grille (4) and the bars of the flip grille (6) are staggered in a one-to-one manner; the flip grille (6) is used to squeeze and limit impurities; and a driving unit (8) for driving the flip grille (6) to flip is provided between the flip grille (6) and the frame (2); A filtering grid (9) is provided inside the water tank (1) for filtering impurities at the bottom of the water in layers, and the bars of the filtering grid (9) and the bars of the flip grid (6) are staggered in a one-to-one manner.

2. A municipal sewage treatment device according to claim 1, characterized in that: The transmission unit (3) comprises a transmission roller (31), a transmission belt (32), a mounting seat (33) and a motor (34); the transmission rollers (31) are evenly arranged at the four corners of the frame (2); the transmission belt (32) is connected to the four transmission rollers (31); the mounting seats (33) are evenly spaced on the outer sides of two front and rear symmetrical transmission belts (32); a salvage grid (4) is hinged between the front and rear corresponding mounting seats (33) via a torsion spring; the motor (34) is mounted on the front side of the frame (2) via a flange and is used to drive the transmission rollers (31) to rotate.

3. A municipal sewage treatment device according to claim 1, characterized in that: Limiting strips (41) are provided at both ends of the hinge shaft of the salvage grid (4), and limiting blocks (331) corresponding to the limiting strips (41) are provided on the outside of the mounting seat (33).

4. A municipal sewage treatment device according to claim 1, characterized in that: A round rod (51) is provided at the upper end of the filtering grid (5), and the round rod (51) is capable of abutting against the salvaging grid (4).

5. A municipal sewage treatment device according to claim 1, characterized in that: The driving unit (8) comprises an electric push rod (81), a sliding rod (82), a rack (83) and a gear (7); the electric push rod (81) is arranged outside the frame (2); a sliding rod (82) is provided at the telescopic end of the electric push rod (81); the sliding rod (82) is slidably connected to a sliding hole arranged outside the frame (2); a rack (83) is provided at the end of the sliding rod (82); and a gear (7) meshing with the rack (83) is provided at the end of the hinge shaft of the flip grille (6).

6. A municipal sewage treatment device according to claim 1, characterized in that: A guide plate capable of abutting against a salvage grid (4) is provided in the middle of the frame (2).

7. A municipal sewage treatment device according to claim 1, characterized in that: The inner wall of the filtering grille (9) is arranged in an arc shape, and an arc-shaped notch (91) cooperating with the salvaging grille (4) is arranged on the right side of the filtering grille (9).

8. A municipal sewage treatment device according to claim 1, characterized in that: A drainage grille (10) is arranged in the water outlet at the upper right end of the water tank (1), and the bars of the drainage grille (10) and the bars of the salvage grille (4) are arranged in a staggered manner in a one-to-one spacing manner.

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