CN218403722U - Be applied to automatically cleaning type grid of municipal sewage treatment plant water inlet - Google Patents

Abstract

The utility model discloses a be applied to automatically cleaning type grid of municipal sewage treatment plant water inlet relates to sewage treatment technical field. In the utility model, the U-shaped frame is fixed with the vertical connecting plate arranged at the top of the inclined plane grating body through the horizontal connecting plate, and the scum collecting box is arranged at the bottom of the feeding platform arranged at the bottom of the U-shaped frame; the inside material pushing component that is used for pushing the dross level to in the dross collecting box that is provided with of U-shaped frame, dross clearance subassembly set up in inclined plane grid body one side of intaking, and dross clearance subassembly reciprocates along inclined plane grid body extending direction. The utility model discloses a No. two pivots and guide bar combined action drive promotion seat up remove along guide way, utilize scum clearance subassembly to take the grid to intake scum that one side was held back and is got off to feeding platform department in step, make the scraping wings scrape the scum on the scum clearance subassembly and fall to the scum collecting box under the drive of a pivot to realize that the high efficiency of scum is piled up to grid one side of intaking and clear away.

Description

A self-cleaning grille applied to the water inlet of municipal sewage treatment plant

technical field

The utility model belongs to the technical field of sewage treatment, in particular to a self-cleaning grid applied to a water inlet of a municipal sewage treatment plant.

Background technique

At the water inlet of the municipal sewage treatment plant, interception grilles are usually installed to intercept the scum in the water and prevent the scum from entering the sewage treatment structure and affecting the normal operation of the sewage treatment equipment. Larger scum in the influent will be intercepted and accumulated on the water inlet side of the grille. Long-term accumulation will easily cause the blockage of the grille and the reduction of the influent flow. Therefore, the intercepted scum needs to be removed regularly.

In order to solve the technical problem that the scum accumulated on the water inlet side of the grille is easy to clean, some grilles with self-cleaning function have appeared in the prior art, which are used to regularly remove the scum retained by the grille. A Chinese patent with the authorized notification number CN217438860U discloses a self-cleaning rotary grille decontamination machine, including a top piece, which is an H-shaped plate structure, and the two sides of the top of the top piece are inserted on both sides of the top plate Inside the rectangular groove, there is a pusher at the bottom of the top piece, a contact rod at the front end of the pusher, and evenly arranged scrapers at the front end of the contact rod. Each scraper consists of a rectangular block at the bottom and two inclined pyramids at the top. Composition of blocks. The scraper is used to contact the grille. Since the top of the scraper is composed of two inclined pyramid structures, when it contacts the grille, it can effectively remove the pollutants cleaned by the grille.

Although the above-mentioned grid decontamination machine solves the problem that the grid is easy to clean, it still has the following defects: (1) the scum adhering to the grid is rotated to the scraper with the rotary grid. When the scraper does not scrape off the scum adhering to the grille in time, it will easily cause the scum to enter the outlet side of the grille and be washed into the sewage under the action of water flow. In the treatment structure; (2) Some of the scum on the water inlet side of the grille is floating on the water surface, and the scum on the water inlet side of the grille cannot be completely carried to the scraper when the grille rotates one revolution, and then The grid needs to be operated many times, which will easily lead to an increase in the cost of electric energy; (3) when large scum is wound on the scraper, the ability of the scraper to clean the scum adhering to the grid will be weakened, which will easily lead to The cleaning ability of the entire grid is reduced. In order, we provide a self-cleaning grille applied to the water inlet of municipal sewage treatment plants to solve the technical problems mentioned above.

Utility model content

The purpose of this utility model is to provide a self-cleaning grille applied to the water inlet of municipal sewage treatment plants. The specific design of the No. 1 rotating shaft and the No. 2 rotating shaft solves the above-mentioned problems in the background technology.

In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions:

The utility model is a self-cleaning grill applied to the water inlet of a municipal sewage treatment plant, which includes a slope grill body installed at the water inlet of the sewage treatment plant; the self-cleaning grill also includes:

U-shaped frame, fixed by a horizontal connecting plate between the U-shaped frame and the vertical connecting plate provided on the top of the inclined grille body;

A scum collection box, the scum collection box is installed at the bottom of the feeding platform provided at the bottom of the U-shaped frame, and the feeding platform is provided with a feed port communicating with the scum collection box; The inside of the U-shaped frame is provided with a pushing assembly for horizontally pushing the scum into the feeding port; and

A scum cleaning assembly, the scum cleaning assembly is arranged on the water inlet side of the inclined grille body, the scum cleaning assembly moves up and down along the extending direction of the inclined grille body, when the scum cleaning assembly When moving to be level with the feeding platform, the scum on the scum cleaning assembly is pushed into the scum collecting box through the horizontal movement of the pushing assembly.

As a preferred technical solution of the utility model, a slag discharge port is provided on the side wall of the scum collection box far away from the inclined-plane grille body, and the bottom of the scum discharge port is flush with the inner bottom of the scum collection box , the slag discharge port is hinged with a movable door for closing the slag discharge port.

As a preferred technical solution of the utility model, the pusher assembly includes a No. 1 driving motor, and the No. 1 driving motor is installed on the side wall of the scum collecting box away from the inclined grille body; The output end of the No. 1 drive motor is connected to a No. 1 rotating shaft, and the bottom of the horizontal connecting plate and the inner top of the U-shaped frame are all provided with a limit channel, and a pushing plate that is threadedly fitted with the No. 1 rotating shaft is slidably fitted in the limit channel.

As a preferred technical solution of the utility model, the pusher plate is composed of a vertical support part and an inclined pusher part; wherein, the vertical support part is slidably fitted in the limiting channel and is connected with the No. The rotating shaft is screw-fitted, the bottom of the inclined-plane pushing part is flush with the upper surface of the feeding platform, and the inclined direction of the inclined-plane pushing part is the same as that of the inclined-plane grille body.

As a preferred technical solution of the present invention, two pairs of lug plates are arranged on the water outlet side of the inclined-plane grille body, and a No. 2 rotating shaft is rotatably connected between each pair of lug plates. connected to the output end of the No. 2 driving motor; the transmission wheels on the No. 2 rotating shaft are connected through a transmission belt.

As a preferred technical solution of the present invention, the water outlet side of the inclined grille body is provided with a guide channel corresponding to the No. 2 rotating shaft one by one, and the inside of the guide channel slides from top to bottom to fit the limit seat, A counterweight seat and a lifting seat; wherein, the counterweight seat fits on the surface of the corresponding lifting seat and is slidably fitted with the No. 2 rotating shaft, and the lifting seat is threadedly engaged with the corresponding No. 2 rotating shaft.

As a preferred technical solution of the present invention, the inside of the guide passage is rotatably connected with a guide rod, and both the counterweight seat and the lifting seat are slidably matched with the corresponding guide rod; the inside of the guide passage corresponding to the No. There is a No. 3 drive motor, the output end of the No. 3 drive motor is connected to the corresponding guide rod; the limit seat inside the guide channel corresponding to the No. 2 drive motor is threadedly matched with the corresponding guide rod, and the No. The limit seat inside the guide channel on the side is slidably matched with the corresponding guide rod.

As a preferred technical solution of the present invention, the scum cleaning assembly includes a hinged cleaning filter plate and a support plate; one end of the cleaning filter plate is hingedly matched with the limit seat, and one end of the support plate The weight base is hingedly fitted; when the cleaning filter plate is moved to fit on the bottom of the inclined-plane pushing part, the upper surface of the cleaning filter plate is flush with the upper surface of the inclined-plane pushing part.

The utility model has the following beneficial effects:

1. The utility model drives the lifting seat to move upwards along the guide channel through the joint action of the second rotating shaft and the guide rod, and uses the scum cleaning assembly to move up the scum left on the water inlet side of the grille to the feeding platform synchronously At the position, driven by the No. 1 rotating shaft, the pushing plate scrapes the scum on the scum cleaning assembly into the scum collection box, so as to realize the efficient removal of the accumulated scum on the water inlet side of the grille.

2. After the utility model clears the scum through the scum cleaning assembly, the No. 3 drive motor is suspended and only the No. 2 rotating shaft drives the lifting seat to move down along the guide channel, so that the support can be supported while keeping the position of the limit seat unchanged. The plate drives the cleaning filter plate to rotate downwards. When the cleaning filter plate and the support plate are unfolded into a straight line, the scum cleaning assembly in the unfolded state moves down and resets through the joint action of the second rotating shaft and the guide rod. When the scum cleaning assembly After reset, keep the position of the limit seat unchanged, and only through the reverse rotation of the second rotating shaft, the cleaning filter plate can be reversely rotated to a horizontal state, and the scum cleaning assembly that approaches a straight line after deployment can be moved down and reset, which can effectively The scum is prevented from being pressed into the bottom of the scum cleaning assembly, so that the scum at the bottom of the scum cleaning assembly cannot be removed in time, thereby increasing the self-cleaning efficiency of the grid of the utility model.

Of course, any product implementing the present utility model does not necessarily need to achieve all the above-mentioned advantages at the same time.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained based on these drawings without creative effort.

Fig. 1 is a schematic structural diagram of the self-cleaning grille of the present invention.

FIG. 2 is a structural schematic diagram of another angle of FIG. 1 .

FIG. 3 is a partial structural schematic diagram of FIG. 1 .

FIG. 4 is a side view of the structure of FIG. 3 .

FIG. 5 is a structural schematic diagram of another angle of FIG. 3 .

FIG. 6 is a bottom view of the structure in FIG. 5 .

FIG. 7 is an enlarged view of the local structure at point A in FIG. 6 .

Fig. 8 is a plurality of use state diagrams of the grid cleaning scum process of the utility model.

In the accompanying drawings, the list of parts represented by each label is as follows:

1- inclined grille body, 2- U-shaped frame, 3- vertical connecting plate, 4- horizontal connecting plate, 5- scum collecting box, 6- feeding platform, 7- feeding port, 8- scum cleaning Components, 801-cleaning filter plate, 802-supporting plate, 9-slagging outlet, 10-moving door, 11-driving motor No. 1, 12-rotating shaft No. 1, 13-pushing plate, 131-vertical support , 132-slope pushing part, 14-rotating shaft No. 2, 15-driving motor No. 2, 16-transmission belt, 17-guiding channel, 18-limiting seat, 19-counterweight seat, 20-lifting seat, 21-guiding Rod, 22-No. 3 driving motor.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Figures 1-8, the utility model is a self-cleaning grille applied to the water inlet of a municipal sewage treatment plant, including a sloped grille body 1, which is installed at the water inlet of a sewage treatment plant, The acute angle side of the inclined grille body 1 is the water inlet side, and the obtuse angle side of the inclined grille body 1 is the water outlet side; it also includes:

U-shaped frame 2, the U-shaped frame 2 and the vertical connecting plate 3 provided on the top of the inclined grille body 1 are fixed by a horizontal connecting plate 4;

Scum collection box 5, scum collection box 5 is installed on the feed platform 6 bottom that U-shaped frame 2 bottoms are provided with, and feed platform 6 is provided with the feed inlet 7 that communicates with scum collection box 5, is collected The raised scum falls into the scum collecting box 5 through the feed port 7 on the feed platform 6 for temporary storage; the inside of the U-shaped frame 2 is provided with a pushing assembly for horizontally pushing the scum into the feed port 7 ;as well as

The scum cleaning assembly 8, the scum cleaning assembly 8 is arranged on the water inlet side of the inclined-plane grille body 1, and the scum cleaning assembly 8 moves up and down along the extending direction of the inclined-plane grille body 1, when the scum cleaning assembly 8 moves up to the When the material platform 6 is level, the scum collected on the scum cleaning assembly 8 is moved to the left into the scum collecting box 5 by the horizontal movement of the pushing assembly.

In the embodiment of the present utility model, a slag discharge port 9 is provided on the side wall of the scum collection box 5 away from the inclined plane grille body 1, and the bottom of the scum discharge port 9 is flush with the inner bottom of the scum collection box 5, and the slag discharge port 9 The dodge door 10 that is used to close the scum outlet 9 is hinged at the place. After the scum accumulation in the scum collection box 5 is full, or the dodge door 10 is opened regularly, the scum in the scum collection box 5 is cleaned out in time.

In the embodiment of the present utility model, the pusher assembly includes a No. 1 drive motor 11, and the No. 1 drive motor 11 is installed on the side wall of the scum collecting box 5 away from the inclined-plane grille body 1;

The output end of No. 1 driving motor 11 is connected with No. 1 rotating shaft 12, and the bottom of horizontal connecting plate 4 and the inner top of U-shaped frame 2 are all provided with limiting grooves, and the pushing material that is threaded with No. 1 rotating shaft 12 is slidably fitted in the limiting grooves. Plate 13; when the scum cleaning component 8 collects the scum on the water surface on the water inlet side of the inclined grille body 1, and makes the scum cleaning component 8 move up to the feeding platform 6, start No. 1 at this time Drive the motor 11, under the rotation of the first rotating shaft 12, the pusher plate 13 is moved horizontally towards the feed port 7, and then the scum on the scum cleaning assembly 8 is pushed into the feed port 7 by the pusher plate 13, It falls into the scum collecting box 5 from the feed port 7, and after the scum on the scum cleaning assembly 8 is cleaned out, the scum cleaning assembly 8 is moved down along the inclined plane grille body 1 to reset.

In the embodiment of the present utility model, the pushing plate 13 is composed of a vertical supporting part 131 and an inclined pushing part 132; wherein, the vertical supporting part 131 is slidably fitted in the limit channel and threaded with the No. 1 rotating shaft 12, and the inclined surface The bottom of the pushing part 132 is flush with the upper surface of the feeding platform 6 to ensure that the scum on the scum cleaning assembly 8 is cleaned up.

In the embodiment of the present utility model, two pairs of lug plates are arranged on the water outlet side of the inclined-plane grille body 1, and the second rotating shaft 14 is rotationally connected between each pair of ear plates. No. drive motor 15 output end is connected; The drive wheel on the No. 2 rotating shaft 14 is connected by transmission belt 16; After starting No. 2 drive motor 15, through the transmission effect of transmission belt 16, can realize the synchronous rotation of two No. 2 rotating shafts 14, Furthermore, the scum cleaning assembly 8 moves up and down stably along the inclined grille body 1 .

In the embodiment of the present utility model, the water outlet side of the inclined grille body 1 is provided with a guide channel 17 corresponding to the second rotating shaft 14 one by one. 19 and the lifting seat 20, the movement of the counterweight seat 19 in the guide channel 17 is realized by promoting the lifting seat 20;

Wherein, the counterweight seat 19 fits on the surface of the corresponding lifting seat 20 and is slidably fitted with the No. 2 rotating shaft 14, and the lifting seat 20 is screwed with the corresponding No. 2 rotating shaft 14; 17 when moving upwards synchronously, use the lifting seat 20 to push the counterweight seat 19 to move upwards synchronously, thereby realizing the upward movement of the scum cleaning assembly 8, during which the scum cleaning assembly 8 remains horizontal (from the first state to the second state and then to the third state, showing the process that the scum cleaning assembly 8 moves up to collect the water surface scum), and when the lifting seat 20 moves down synchronously with the counterweight seat 19, the limit seat 18 keeps When the position does not move, the scum cleaning assembly 8 can be pulled down and unfolded under the action of the lifting seat 20, so that it approaches a straight line state.

In the embodiment of the present utility model, a guide rod 21 is rotatably connected inside the guide passage 17, and both the counterweight seat 19 and the lifting seat 20 are slidably matched with the corresponding guide rod 21;

No. three drive motors 22 are arranged inside the guide passage 17 corresponding to No. two drive motors 15, and No. three drive motors 22 output ends are connected with corresponding guide rods 21; The corresponding guide rod 21 is threaded, and the limit seat 18 inside the guide passage 17 on the opposite side of the No. 2 drive motor 15 is slidably fitted with the corresponding guide rod 21; No. drive motor 15 and No. 3 drive motor 22, under the thread cooperation of guide rod 21 and limit seat 18 and the thread cooperation of lifting seat 20 and second rotating shaft 14, make lifting seat 20 and limit seat 18 move up synchronously, Further, the scum cleaning assembly 8 is kept horizontal and moved upwards, thereby collecting the scum on the water surface and transporting it to the scum collecting box 5 . After utilizing the pushing plate 13 to remove the scum on the scum cleaning assembly 8, start the No. 2 driving motor 15 and the No. 3 driving motor 22 at the same time, so that the scum cleaning assembly 8 keeps the horizontal state and moves down for a certain distance , turn off the No. 3 drive motor 22 at this time so that the limit seat 18 remains in place, and only the counterweight seat 19 moves down with the lifting seat 20 to stretch the scum cleaning assembly 8 downward, and then start the No. 2 motor at the same time. Drive motor 15 and No. 3 drive motor 22, so that the scum cleaning assembly 8 in the unfolded state moves down below the water surface. After the entire scum cleaning assembly 8 moves down to the water surface, turn off No. 3 drive motor 22 to make the limit The seat 18 keeps the position still, starts the No. 2 driving motor 15 so that the lifting seat 20 pushes the counterweight seat 19 to move up synchronously, and the cleaning filter plate 801 starts to rotate upwards until the hoist returns to the horizontal state, thereby realizing the original function of the scum cleaning assembly 8 Stateful reset (from the fourth state to the fifth state and then to the sixth state, showing the process of moving down and resetting the scum cleaning assembly 8).

In the embodiment of the present utility model, the scum cleaning assembly 8 includes a hinged cleaning filter plate 801 and a support plate 802; Hinged fit; in the process of moving down and resetting the scum cleaning assembly 8, it is precisely through the lifting seat 20 that the supporting plate 802 is stretched downwards, thereby bringing the cleaning filter plate 801 to rotate downwards, and in this way the entire floating The stretching and unfolding of the scum cleaning assembly 8 can effectively prevent the scum from being pressed into the bottom of the scum cleaning assembly 8 by moving down and resetting the scum cleaning assembly 8 approaching a straight line after unfolding, so that the bottom of the scum cleaning assembly 8 The scum in the grid cannot be removed in time, which increases the self-cleaning efficiency of the grid.

When the cleaning filter plate 801 moved up to be attached to the bottom of the inclined-plane pushing part 132, the upper surface of the cleaning filter plate 801 was flush with the upper surface of the inclined-plane pushing part 132. The scum collected on the plate 801 is scraped off into the scum collection box 5 .

The working principle of this embodiment is: when there is more scum floating on the water surface on the water inlet side of the inclined-plane grille body 1, the No. 2 drive motor 15 and the No. 3 drive motor 22 are started at the same time. Under the thread cooperation of the lifting seat 20 and the No. 2 rotating shaft 14 thread cooperation, the lifting seat 20 and the limit seat 18 are moved up synchronously, and then the scum cleaning assembly 8 is kept in a horizontal state and moves upward, thereby removing the scum on the water surface. The scum is collected and transported to the scum collection box 5. At this time, the No. 1 drive motor 11 is started to drive the pushing plate 13 to scrape the scum on the cleaning filter plate 801 into the scum collection box 5, and then start at the same time The No. 2 drive motor 15 and the No. 3 drive motor 22 make the scum cleaning assembly 8 keep a horizontal state and move down for a certain distance. At this time, the No. 3 drive motor 22 is turned off so that the position-limiting seat 18 remains in place, and only through the counterweight seat 19 Stretch and expand the scum cleaning assembly 8 as the lifting seat 20 moves down, and start the No. 2 driving motor 15 and the No. 3 driving motor 22 at the same time, so that the scum cleaning assembly 8 in the unfolded state moves down to the water surface Next, after the entire scum cleaning assembly 8 moves down to the water surface, turn off the No. 3 driving motor 22 so that the limit seat 18 remains in place, start the No. 2 driving motor 15 so that the lifting seat 20 pushes the counterweight seat 19 to go up synchronously Move, and the cleaning filter plate 801 starts to rotate upwards until the weight returns to the horizontal state, thereby realizing the reset of the original state of the scum cleaning assembly 8.

In the description of this specification, descriptions referring to the terms "one embodiment", "example", "specific example" and the like mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in the description of the present invention. In at least one embodiment or example. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not exhaust all details, nor do they limit the utility model to the specific implementations described. Obviously, many modifications and variations can be made based on the contents of this specification. This specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the utility model, so that those skilled in the art can well understand and utilize the utility model. The invention is to be limited only by the claims and their full scope and equivalents.

Claims (8)

1. A self-cleaning type grating applied to a water inlet of a municipal sewage treatment plant comprises an inclined plane grating body, wherein the inclined plane grating body is arranged at the water inlet of the municipal sewage treatment plant; it is characterized by also comprising:

the U-shaped frame is fixed with a vertical connecting plate arranged at the top of the inclined plane grating body through a horizontal connecting plate;

the scum collecting box is arranged at the bottom of the feeding platform arranged at the bottom of the U-shaped frame, and a feeding hole communicated with the scum collecting box is formed in the feeding platform; a material pushing assembly used for horizontally pushing the floating slag into the feed inlet is arranged in the U-shaped frame; and

dross clearance subassembly, dross clearance subassembly sets up inclined plane grid body one side of intaking, dross clearance subassembly is followed inclined plane grid body extending direction reciprocates, works as dross clearance subassembly move up to with during the feeding platform parallel and level, through the horizontal migration that pushes away the material subassembly passes dross to in the dross collecting box on with this dross clearance subassembly.

2. The self-cleaning type grid applied to the water inlet of the municipal sewage treatment plant according to claim 1, wherein a slag discharge port is arranged on the side wall of the scum collecting box far away from the inclined grid body, the bottom of the slag discharge port is flush with the bottom in the scum collecting box, and a movable door for sealing the slag discharge port is hinged at the slag discharge port.

3. The self-cleaning type grid applied to the water inlet of the municipal sewage treatment plant according to claim 1, wherein the pushing assembly comprises a first driving motor, and the first driving motor is mounted on the side wall of the scum collecting box far away from the bevel grid body;

the output end of the first driving motor is connected with a first rotating shaft, the bottom of the horizontal connecting plate and the inner top of the U-shaped frame are respectively provided with a limiting channel, and a material pushing plate in threaded fit with the first rotating shaft is arranged in the limiting channels in a sliding fit mode.

4. The self-cleaning type grid applied to the water inlet of the municipal sewage treatment plant according to claim 3, wherein the material pushing plate is composed of a vertical supporting part and an inclined pushing part;

wherein, vertical support portion sliding fit is in the spacing channel and with pivot screw-thread fit No. one, inclined plane pushing material portion bottom with feeding platform upper surface parallel and level, inclined plane pushing material portion with inclined plane grid body incline direction is the same.

5. The self-cleaning type grating applied to the water inlet of the municipal sewage treatment plant according to claim 4, wherein two pairs of ear plates are arranged on the water outlet side of the inclined grating body, a second rotating shaft is rotatably connected between each pair of ear plates, and one of the second rotating shafts is connected with the output end of a second driving motor on the corresponding ear plate; the transmission wheels on the second rotating shaft are connected through a transmission belt.

6. The self-cleaning type grid applied to the water inlet of the municipal sewage treatment plant according to claim 5, wherein a guide channel corresponding to the second rotating shaft in a one-to-one manner is arranged on the water outlet side of the inclined grid body, and a limiting seat, a counterweight seat and a lifting seat are sequentially matched in a sliding manner in the guide channel from top to bottom;

the counterweight seat is attached to the surface of the corresponding lifting seat and is in sliding fit with the second rotating shaft, and the lifting seat is in threaded fit with the corresponding second rotating shaft.

7. The self-cleaning type grid applied to the water inlet of the municipal sewage treatment plant according to claim 6, wherein a guide rod is rotatably connected inside the guide channel, and the counterweight seat and the lifting seat are in sliding fit with the corresponding guide rod;

a third driving motor is arranged in the guide channel corresponding to the second driving motor, and the output end of the third driving motor is connected with the corresponding guide rod; and the limiting seat in the guide channel corresponding to the second driving motor is in threaded fit with the corresponding guide rod, and the limiting seat in the guide channel on the opposite side of the second driving motor is in sliding fit with the corresponding guide rod.

8. The self-cleaning type grid applied to the water inlet of the municipal sewage treatment plant according to claim 6, wherein the scum clearing assembly comprises a clearing filter plate and a bracketing plate which are hinged with each other; one end of the cleaning filter plate is hinged and matched with the limiting seat, and one end of the supporting plate is hinged and matched with the counterweight seat;

when the cleaning filter plate moves upwards to be attached to the bottom of the inclined plane pushing part, the upper surface of the cleaning filter plate is flush with the upper surface of the inclined plane pushing part.

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