CN113617087B - Mechanical grating - Google Patents

Abstract

The invention discloses a mechanical grid, which comprises a box body, a grid body, a mechanical overturning device, a water storage tank and a cover plate, wherein a water inlet and a water outlet are formed in the box body, an opening is formed in one end, close to the water inlet, of the top of the box body, the grid body is arranged in the opening, one end of the grid body is arranged at the bottom of the water inlet, the other end of the grid body is fixed at one end of the mechanical overturning device, one end, far away from the grid body, of the mechanical overturning device is connected with the water storage tank, the gravity of the water storage tank is smaller than that of the grid body, sewage at the top of the grid body can flow into the water storage tank, a water outlet hole is formed in the water storage tank, and the cover plate capable of plugging the water outlet hole is fixed on the box body. The mechanical grating has the advantages that sewage flows into the water storage tank and drives the water storage tank to descend, so that the grating body is turned upwards, garbage filtered by the grating body is automatically dumped and collected, power is not needed in the whole filtering process, unpowered sewage filtering is realized, energy is greatly saved, and the operation and maintenance cost is reduced.

Description

a mechanical grille

technical field

The invention relates to the technical field of garbage filtering, in particular to a mechanical grille.

Background technique

Sewage treatment is the process of purifying sewage to meet the water quality requirements for discharge into a certain water body or for reuse. Sewage treatment is widely used in various fields such as construction, agriculture, transportation, energy, petrochemical, environmental protection, urban landscape, medical treatment, catering, etc., and it is also increasingly entering the daily life of ordinary people. Efficient and high-quality treatment of sewage is of great practical significance for the protection of water resources and the formation of sustainable development industries. If it is large, it may affect the filtration system and reduce the filtration efficiency. At this time, it is necessary to filter a large amount of solid waste contained in the sewage.

Mechanical grille is one of the purification and filtration equipment produced in sewage treatment technology. It greatly reduces the labor intensity of workers, protects the health of workers, reduces the head loss of incoming water, and improves the efficiency of pumping stations. There are many types of mechanical grills, generally consisting of a grill that intercepts pollutants, a rake that removes pollutants intercepted by the grill, traction components and transmission devices that drive the rake to run. For example, the Chinese Utility Model Patent Publication No. CN208340214U discloses a sewage treatment device with an easy-to-clean filter plate. The filter plate is adjusted to rotate on the rotating shaft by a biaxial motor, so that the filter plate can be cleaned up when debris accumulates to the dodge door; The new patent publication number is CN201721438298.X, which discloses a grid decontamination system, which filters sewage through obliquely inserted grids; However, the above-mentioned patents all need external power to realize the rotation operation of the filter plate, which requires energy consumption and high operation and maintenance costs.

Contents of the invention

The technical problem to be solved by the present invention is how to realize unpowered sewage filtration, energy saving and operation and maintenance cost reduction.

In order to solve the above technical problems, the present invention provides the following technical solutions:

A mechanical grille, comprising a box body, a grille body, a mechanical overturning device, a water storage tank and a cover plate, the box body is an internal hollow structure, the box body is provided with a water inlet and a water outlet port, and the box body The top end close to the water inlet is provided with an opening, and the grille body is arranged in the opening. One end of the grille body is arranged at the bottom of the water inlet, and the other end is fixed at one end of a mechanical turning device, which is far away from the water inlet. One end of the grid body is connected to the water storage tank, the gravity of the water storage tank is less than that of the grid body, the sewage on the top of the grid body can flow into the water storage tank, and a water outlet hole is opened on the water storage tank, so A cover plate capable of blocking the water outlet hole is fixed on the box body.

The mechanical grill uses sewage to flow into the water storage tank and drives the water storage tank down, causing the grill body to turn upwards, and automatically dumps and collects the garbage filtered by the grill body. Greatly save energy and reduce operation and maintenance costs.

Preferably, the mechanical overturning device includes a first rotating shaft, a first connecting rod and a second connecting rod, the first rotating shaft is rotatably fixed on the box at the opening, and the grille body is away from the water inlet One end of the first connecting rod is fixedly connected to the first rotating shaft, one end of the first connecting rod is fixedly connected to the first rotating shaft, and the other end is hinged to the second connecting rod to form a connecting rod mechanism, and the second connecting rod is far away from the first One end of the connecting rod is connected to the water storage tank; the lowering of the water storage tank drives the first rotating shaft to rotate through the connecting rod structure, causing the grille body to turn upwards.

Preferably, the mechanical overturning device includes a second rotating shaft, a first rotating disc, a fixed pulley and a first pulley, the second rotating shaft is rotatably fixed on the box at the opening, and the grille body The end away from the water inlet is fixed on the second rotating shaft, the first rotating disk is fixed on the second rotating shaft, the fixed pulley is fixed on the box body at the top of the water storage tank, and one end of the first pull rope It is wound and fixed on the first rotating disk, and the other end is wound on the fixed pulley and connected to the water storage tank; when the water storage tank descends, the first pull rope drives the first rotating disk to rotate, and then drives the second rotation Rotation of the shaft causes the grate body to flip upwards.

Preferably, the mechanical overturning device includes a third rotating shaft, a second rotating disc, a movable pulley and a second pulley, the third rotating shaft is rotatably fixed on the box at the opening, and the grille body is away from One end of the water inlet is fixedly connected to the third rotating shaft, the second rotating disc is fixed on the third rotating shaft, the movable pulley is fixed on the water storage tank, and one end of the second pull rope is wound around and fixed on the third rotating shaft. On the second rotating disk, the other end is wound around the moving pulley and connected to the box body; when the water storage tank is lowered, the second pull rope drives the second rotating disk to rotate, and then drives the third rotating shaft to rotate so that the grille The body flips up.

Through the setting of the movable pulley, the descending height of the water storage tank can be reduced, thereby reducing the overall height of the tank, thereby reducing the height difference between the water inlet and the water outlet, and finally reducing the drain pipe used for the filtered sewage. The buried depth reduces the construction cost.

Preferably, a limit rod is vertically fixed in the box, a chute is vertically provided on the limit rod, and a slide block is provided on the outer wall of the water storage tank to snap into the chute, so that the water storage tank is Do vertical movement on the limit rod.

Preferably, a blocking device is also included, the blocking device includes a telescopic spring, a fixing plate and a blocking plate, the top of the telescopic spring is fixed on the box body, the bottom is connected to the fixing plate, and one end of the fixing plate is vertical The blocking plate capable of blocking the water inlet is fixed, and the other end is set toward the grille body and attached to the bottom of the grille body.

Preferably, the cover plate is fixed on the top of the box body through elastic telescopic rods, and the bottom of the cover plate is fixed with a first magnet capable of attracting the water storage tank.

Preferably, a buffer spring is fixed at the bottom of the water storage tank or the bottom of the tank body.

Preferably, the grill body is provided with water holes, and the output end of the water holes is arranged on the top of the water storage tank.

Preferably, a water tank plate is fixed between the water flow hole and the water storage tank, one end of the water tank plate is set at the bottom of the water flow hole, and the other end is set at the top of the water storage tank.

Compared with prior art, the beneficial effect of the present invention is:

1. The mechanical grille uses sewage to flow into the water storage tank and drives the water storage tank down, causing the grille body to turn upwards, automatically dumping and collecting the garbage filtered by the grille body, and the whole filtration process does not require power to achieve powerless filtration Sewage, greatly saving energy and reducing operation and maintenance costs.

2. Through the setting of the movable pulley, the descending height of the water storage tank can be reduced, thereby reducing the overall height of the tank, thereby reducing the height difference between the water inlet and the water outlet, and finally reducing the drainage for the filtered sewage The buried depth of the pipeline can reduce the construction cost.

3. Through the setting of the blocking device, the water inlet can be automatically closed when the grille body is turned over, so as to prevent sewage from entering the tank after the grille body is turned over.

Description of drawings

FIG. 1 is a schematic structural view of Embodiment 1 of the present invention;

Fig. 2 is a partial structural schematic diagram of Embodiment 1 of the present invention;

Figure 3 is a sectional view of Embodiment 1 of the present invention;

Figure 4 is an enlarged view of A in Figure 3;

5 is a schematic diagram of a partial structure of Embodiment 2 of the present invention;

FIG. 6 is a schematic structural diagram of Embodiment 3 of the present invention;

FIG. 7 is a schematic diagram of a partial structure of Embodiment 3 of the present invention.

detailed description

In order to facilitate those skilled in the art to understand the technical solution of the present invention, the technical solution of the present invention will be further described in conjunction with the accompanying drawings.

In this application, terms such as "installation", "connection", "connection" and "fixation" should be interpreted in a broad sense, for example, it can be a fixed connection or a detachable connection, unless otherwise clearly specified and limited. , or integrated; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection or an indirect connection through an intermediary, it can be the internal communication of two components or the interaction relationship between two components . Those of ordinary skill in the art can understand the specific meanings of the above terms in this application according to specific situations.

In this application, unless otherwise clearly specified and limited, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the indicated technical features quantity. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present application, "plurality" means two or more, unless otherwise specifically defined.

Embodiment one

Referring to Figures 1 to 3, this embodiment discloses a mechanical grille, which includes a box body 1, a grille body 2, a mechanical overturning device 3, a water storage tank 4, a tank plate 5, a cover plate 6 and a blocking device 7, The box body 1 is an internal hollow structure, the box body 1 is provided with a water inlet 101 and a water outlet 102, and an opening 103 is provided at the top of the box body near the water inlet 101, and the opening 103 is provided with the The grid body 2, one end of the grid body is arranged at the bottom of the water inlet 101, the opening 103 is blocked, and the sewage entering the water inlet 101 is filtered, and the other end is fixed on one end of the mechanical turning device 3, the The end of the mechanical overturning device 3 away from the grid body 2 is connected to the water storage tank 4, the top of the water storage tank 4 is open and the gravity is smaller than that of the grid body 2; the top of the grid body 2 is also provided with a water hole 201 , the water tank plate 5 is fixed between the water flow hole 201 and the water storage tank 4, and one end of the water tank plate 5 is arranged at the bottom of the water flow hole 201, and the other end is arranged at the top of the water storage tank 4 for introducing the water flowing in from the water flow hole 201 In the water storage tank 4 , a water outlet hole 401 is opened on the bottom of the water storage tank 4 , and a cover plate 6 capable of blocking the water outlet hole 401 is fixed on the box body 1 at the top of the water storage tank 4 .

The mechanical grill uses sewage to flow into the water storage tank 4 and drives the water storage tank down, causing the grill body 2 to turn upwards, and automatically dumps and collects the garbage filtered by the grill body 2. The whole filtration process does not require power, and realizes no power Filter sewage, greatly save energy and reduce operation and maintenance costs.

The grill body 2 is funnel-shaped. The grill body 2 includes a front plate 202, a rear plate 203 and two side plates 204. One end of the front plate 201 is connected to the mechanical turning device 3, and the other end is set toward the water inlet 101. And the height is lower than the height of the end where the front plate 202 is connected to the mechanical overturning device 3, the end of the front plate 202 away from the mechanical overturning device 3 is fixed to the rear plate 203, and the free end of the rear plate 203 is towards the bottom of the water inlet 101 It is installed and attached to the inner wall of the box body 1, and the side plate 204 is also fixed between the front plate 202 and the rear plate 203. The side plate 204 is triangular in shape and attached to the inner wall of the box body 1 to prevent sewage Enter the box 1 without filtering. The front plate 202 is provided with a plurality of drainage holes 2021 for filtering sewage, and the water flow holes 201 are arranged on the end of the front plate 202 close to the mechanical turning device 3 .

The mechanical turning device 3 includes a first rotating shaft 301, a first connecting rod 302 and a second connecting rod 303, the first rotating shaft 301 is rotatably fixed on the box body 1 at the opening 103, and the front plate The end of 202 away from the water inlet 101 is fixed on the first rotating shaft 301, one end of the first connecting rod 302 is fixed on the first rotating shaft 301, and the other end is hinged to the upper end of the second connecting rod 303 to form a connecting rod mechanism, the lower end of the second connecting rod 303 is the end away from the first connecting rod 302 and connected to the water storage tank 4 . Specifically, referring to FIG. 3 , when the water storage tank 4 is lowered, the connecting rod structure drives the first rotating shaft 301 to rotate clockwise, and then drives the grille body 2 to turn upwards clockwise to dump garbage, thereby realizing unpowered cleaning of garbage.

Further, the cover plate 6 is fixed on the top of the box body 1 through the elastic telescopic rod 8 capable of vertical expansion and contraction. Through the setting of the elastic telescopic rod 8, the cover plate 6 can block the water outlet hole 401 on the water storage tank 4. The cushioning effect can also enable the cover plate 6 to be accurately aligned with the water outlet hole 401 and prevent the cover plate 6 from shifting. The bottom of the cover plate 6 is fixed with a first magnet (not marked) that can absorb the water storage tank 4, so as to ensure that the cover plate 6 can block the water inlet hole 401; further, the water inlet hole 41 is also provided with A sealing ring (not marked in the figure) improves the sealing performance between the cover plate 6 and the water inlet hole 401 .

Still further, the bottom of the water storage tank 4 is fixed with a second magnet 9 capable of attracting the bottom of the tank 1, so that the water storage tank 4 absorbs the tank 1 through the second magnet 9 when it descends. Specifically, the second The bottom of the casing 1 at the bottom of the magnet 9 is fixed with an iron block or the bottom of the casing 1 is an iron material, so that the second magnet 9 can be sucked downward. It should be noted that the second magnet 9 can also be fixed to the bottom of the tank 1 at the bottom of the water storage tank 4, and the bottom of the water storage tank 4 is fixed with an iron block or the bottom of the water storage tank 4 is made of iron material.

Since the second magnet 9 attracts the casing 1 or the water storage tank 4, the attraction effect is greater, which will cause the water storage tank 4 to drop instantly, and then drive the grid body 2 to vibrate, which is convenient for dumping the garbage on the grid body 2 . Further, the buffer spring 10 is fixed on the bottom of the water storage tank 4 or on the bottom of the box body 1 at the bottom of the water storage tank 4, so as to buffer the collision between the water storage tank 4 and the bottom of the box body 1, and improve the pressure between the water storage tank 4 and the box body. 1 service life.

Referring to Figure 4, the blocking device 7 includes a telescopic spring 701, a fixed plate 702 and a blocking plate 703, the top of the telescopic spring 701 is fixed on the box body 1 at the bottom of the water inlet 101, and the bottom of the telescopic spring 701 is connected to the fixed Plate 702, one end of the fixed plate 702 vertically fixes the blocking plate 703 capable of blocking the water inlet 101, and the other end is set toward the back plate 203 on the grille body 2, and the grille body 2 is the back plate when filtering 203 is attached to the fixed plate 702, and is used to press the fixed plate 702, so that the blocking plate 703 is far away from the water inlet 101, and then the water inlet 101 is opened. At this time, the telescopic spring 701 is in a stretched state. When the grid body 2 is turned upside down, the rear plate 203 loses the pressure on the fixed plate 702, and the telescopic spring 701 returns to its natural state, which will drive the fixed plate 702 to move upward, and then the blocking plate 703 will move upward and block the water inlet 101, realizing The automatic opening and closing of the water inlet 101 prevents sewage from entering the box body 1 after the grid body 2 is overturned.

The working principle of the present invention is: before the sewage enters the box body 1, because the gravity of the water storage tank 4 is smaller than that of the grille body 2, the grille body 2 is located below the water inlet 101, and the rear plate 203 presses against the fixed plate 702, so that the blocking plate 703 is far away from the water inlet 101, and then the water inlet 101 is opened, the sewage enters the box body 1, and is filtered through the drain hole 2021 on the front plate 202, and the impurities are left on the grille body 2 after filtration. The filtered water is discharged from the water outlet 102 .

When the impurities on the grid body 2 block the drain hole 2021 on the front plate 202, the sewage cannot be filtered and the water level on the upper part of the grid body 2 rises, and the sewage enters from the water flow hole 201 and enters the water storage tank 4 through the sink plate 5 for storage. , causing the gravity of the water storage tank 4 to increase. When the gravity in the water storage tank 4 is greater than the gravity of the grid body 2, the water storage tank 4 descends and is driven by the linkage mechanism composed of the first connecting rod 302 and the second connecting rod 303. The first rotating shaft 301 rotates clockwise, and then drives the grid body 2 to turn upwards clockwise. At this time, the back plate 203 on the grid body 2 loses pressure on the fixing plate 702, and the telescopic spring 701 will drive the fixing plate. 702 moves up, and then the blocking plate 703 moves up and blocks the water inlet, preventing sewage from entering the box body 1 after the grid body 2 is overturned. After the grille body 2 is turned upwards, the garbage on the grille body 2 falls to the top of the box body 1 under the action of gravity and is collected; when the grille body 2 is turned over, the cover plate 6 on the water outlet hole 401 at the bottom of the water storage tank 4 follows When the water storage tank is lowered and opened, the second magnet 9 holds the box body 1. Since the second magnet 9 holds the box body 1, the attraction effect is greater, which will cause the water storage tank 4 to drop instantly, and then drive the grille body 2 Vibration to facilitate the removal of garbage on the grille body 2. As the gravity of the water storage tank 4 decreases until the gravity of the water storage tank 4 is smaller than the grille body 2, the grille body 2 turns back to the initial filtering position and drives the first rotation The shaft 301 rotates counterclockwise, and then the connecting rod mechanism formed by the first connecting rod 302 and the second connecting rod 303 drives the water storage tank 4 to rise, the second magnet 9 is separated from the bottom of the tank body 1, and the cover plate 6 blocks the outlet hole 401; in addition, while the grid body 2 is rotating, the rear plate 203 presses the fixed plate 703 to move down, causing the blocking plate 703 to move down and away from the water inlet 101, so as to realize the opening of the water inlet 101, and to follow-up Sewage is filtered.

Embodiment two

Referring to Fig. 5, the difference between this embodiment and Embodiment 1 is that the mechanical overturning device 3 includes a second rotating shaft 304, a first rotating disk 305, a fixed pulley 306 and a first pull cord 307, and the second rotating shaft 304 Rotatably fixed on the box body 1 at the opening 103, the end of the front plate 202 away from the water inlet 101 is fixedly connected to the second rotating shaft 304, both ends of the second rotating shaft 304 are fixedly connected to the first A rotating disk 305, the fixed pulley 306 is fixed on the inner wall of the tank body 1 at the top of the water storage tank 4, one end of the first stay rope 307 is wound clockwise and fixed on the first rotating disk 305, and the other end is wound around The water storage tank 4 is connected behind the fixed pulley 306 . Specifically, when the water storage tank 4 descends, the first pull rope 307 drives the first rotating disk 305 to rotate clockwise, and then drives the second rotating shaft 304 to rotate clockwise, causing the grille body 2 to turn upwards clockwise. Dump the garbage to realize the unpowered cleaning of garbage.

Embodiment three

Referring to Fig. 6 and Fig. 7, the difference between this embodiment and Embodiment 1 is that the mechanical overturning device 3 includes a third rotating shaft 308, a second rotating disc 309, a movable pulley 310 and a second pull cord 311, and the third rotating The shaft 308 is rotatably fixed on the box body 1 at the opening 103, the end of the front plate 202 away from the water inlet 101 is fixedly connected to the third rotating shaft 308, and both ends of the third rotating shaft 308 are fixed by the Referring to the second rotating disk 309, the two movable pulleys 310 are respectively fixed on the outer walls of both sides of the water storage tank 4, one end of the second stay rope 311 is wound clockwise and fixed on the second rotating disk 309, and the other end is wound around It is arranged behind the movable pulley 310 and fixed on the inner wall of the box body 1 . Specifically, when the water storage tank 4 descends, it drives the movable pulley 310 to descend, and drives the second rotating disk 309 to rotate clockwise through the second pull cord 311, and then drives the third rotating shaft 308 to rotate clockwise, causing the The grille body 2 is turned upwards clockwise to dump the garbage, so as to realize unpowered cleaning of the garbage.

What needs to be explained here is that in the actual sewage pipeline construction process, it is necessary to reduce the height difference between the drainage pipelines used to discharge the unfiltered sewage and the drainage pipelines used to discharge the filtered sewage, thereby reducing the height difference between the drainage pipelines used to discharge the filtered sewage. The buried depth of the drainage pipeline reduces the construction cost; in this embodiment, the setting of the movable pulley 309 is adopted, which can reduce the descending height of the water storage tank 4, which is close to half of the descending height of the water storage tank 4 in Embodiment 1, thereby reducing the height of the tank 1. The overall height, thereby reducing the height difference between the water inlet 101 and the water outlet 102, finally reducing the buried depth of the drainage pipes used to discharge the filtered sewage, reducing construction costs.

Further, the limit rod 11 is vertically fixed inside the box body 1, and the limit rod 11 is vertically provided with a chute (not marked in the figure), and the outer wall of the water storage tank 4 is provided with a clamping The slider 12 in the chute causes the water storage tank 4 to move vertically on the limit rod 11, preventing the water storage tank 4 from shifting in the vertical direction, ensuring that the cover plate 6 can be accurately aligned with the water outlet hole 401, and realizing water outlet Closure of hole 401 .

Embodiment four:

The difference between this embodiment and the first to third embodiments above is that the water flow hole 201 is arranged on the side plate 204. When the upper drain hole of the front plate 202 is blocked, the sewage flows into the water flow hole 201 on the side plate 204. Certainly, also can all be provided with flow hole 201 on side plate 204 and front plate 202, sewage enters water storage tank 4 from two flow holes 201.

Further, when the water flow holes 201 are provided on the side plate 204 and the front plate 202, the height of the water flow holes 201 on the side plate 204 is higher than the height of the water flow holes on the front plate 202, specifically, when the grille body 1 When the sewage at the top has floating objects to block the flow hole 201, the water cannot enter the water storage tank 4 from the flow hole 201 on the front plate 202, and the water level rises further until it is the same as the height of the flow hole 201 on the side plate 204. The water flow hole 201 on the plate 204 enters and flows into the water storage tank 4 through the water tank plate 5, so as to realize the descent of the water storage tank 4 and drive the grid body 2 to rotate. This process also does not need to use external power to introduce water into the water storage tank 4. Realize power-free operation.

Embodiment five

In this embodiment, on the basis of the first embodiment, a garbage collection mechanism capable of receiving the garbage dumped from the grille body 2 is provided on the top of the box, which may specifically be a garbage collection frame or a garbage collection basket.

Embodiment six

In this embodiment, on the basis of Embodiment 5, a garbage collection reminder mechanism is provided on the top of the box. In this embodiment, the garbage collection reminder mechanism is a gravity sensor, and the garbage collection mechanism is placed on the top of the garbage collection At the top of the reminder mechanism, when the gravity of the garbage collection mechanism meets the set value of the garbage collection reminder mechanism, the garbage collection reminder mechanism will automatically alarm to remind the staff that the garbage collection mechanism is full and the garbage collection mechanism needs to be transported away , and replace the empty garbage collection mechanism for garbage collection.

It will be apparent to those skilled in the art that the invention is not limited to the details of the above-described exemplary embodiments, but that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Accordingly, the embodiments should be regarded in all points of view as exemplary and not restrictive, the scope of the invention being defined by the appended claims rather than the foregoing description, and it is therefore intended that the scope of the invention be defined by the appended claims rather than by the foregoing description. All changes within the meaning and range of equivalents of the elements are embraced in the invention, and any reference sign in a claim shall not be construed as limiting the claim concerned.

The above-described embodiments only represent the implementation of the invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments. For those skilled in the art, some deformations and changes can also be made without departing from the concept of the present invention. Improvements, these all belong to the protection scope of the present invention.

Claims (6)

1. A mechanical grid, characterized in that: the water storage tank comprises a tank body, a grid body, a mechanical overturning device, a water storage tank and a cover plate, wherein the tank body is of an internal hollow structure, a water inlet and a water outlet are formed in the tank body, an opening is formed in one end, close to the water inlet, of the top of the tank body, the grid body is arranged in the opening, one end of the grid body is arranged at the bottom of the water inlet, the other end of the grid body is fixed at one end of the mechanical overturning device, one end, far away from the grid body, of the mechanical overturning device is connected with the water storage tank, the gravity of the water storage tank is smaller than that of the grid body, sewage at the top of the grid body can flow into the water storage tank, a water outlet hole is formed in the water storage tank, and the cover plate capable of plugging the water outlet hole is fixed on the tank body;

the mechanical turnover device comprises a first rotating shaft, a first connecting rod and a second connecting rod, the first rotating shaft can be rotatably fixed on the box body at the opening, one end of the grid body, far away from the water inlet, is fixedly connected to the first rotating shaft, one end of the first connecting rod is fixedly connected to the first rotating shaft, the other end of the first connecting rod is hinged to the second connecting rod to form a connecting rod mechanism, and one end of the second connecting rod, far away from the first connecting rod, is connected to the water storage tank; the water storage tank descends to drive the first rotating shaft to rotate through the connecting rod structure, so that the grating body is turned upwards.

2. A mechanical grid according to claim 1, wherein: still include plugging device, plugging device includes expanding spring, fixed plate and shutoff board, the expanding spring top is fixed on the box, and the bottom is connected the fixed plate, the vertical fixed shutoff board that can the shutoff water inlet of fixed plate one end, the other end sets up and laminates in grid body bottom towards the grid body.

3. A mechanical grid according to claim 1, wherein: the cover plate is fixed to the top of the box body through the elastic telescopic rod, and a first magnet capable of sucking the water storage tank is fixed to the bottom of the cover plate.

4. A mechanical grid according to claim 1, wherein: and a buffer spring is fixed at the bottom of the water storage tank or the bottom of the tank body.

5. A mechanical grid according to claim 1, wherein: the grid body is provided with a water flowing hole, and the output end of the water flowing hole is arranged at the top of the water storage tank.

6. A mechanical grid according to claim 5, wherein: and a water trough plate is fixed between the drain hole and the water storage tank, one end of the water trough plate is arranged at the bottom of the drain hole, and the other end of the water trough plate is arranged at the top of the water storage tank.

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