A mechanical grille

Abstract

The present invention discloses a mechanical grille, comprising a box, a grille body, a mechanical flip device, a water tank and a cover plate, wherein a water inlet and a water outlet are arranged on the box, an opening is arranged at one end of the top of the box near the water inlet, a 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 to one end of the mechanical flip device, an end of the mechanical flip device away from the grille body is connected to the water tank, the gravity of the water tank is less than the gravity of the grille body, sewage on the top of the grille body can flow into the water tank, a water outlet hole is arranged on the water tank, and a cover plate capable of blocking the water outlet hole is fixed on the box. The advantage of the present invention is that the mechanical grille utilizes sewage to flow into the water tank and drives the water tank to descend, so that the grille body flips upward, and the garbage filtered by the grille body is automatically dumped and collected, and the whole filtering process does not require power, so that unpowered sewage filtering is achieved, which greatly saves energy and reduces operation and maintenance costs.

Description

[0001] This application is a divisional application of application number 202110886827.7, application date August 3, 2021, and invention name “A mechanical grille”. Technical Field

[0002] The invention relates to the technical field of garbage filtering, in particular to a mechanical grille. Background Art

[0003] Sewage treatment is the process of purifying sewage to meet the water quality requirements for discharge into a water body or reuse. Sewage treatment is widely used in various fields such as construction, agriculture, transportation, energy, petrochemicals, environmental protection, urban landscape, medical care, and catering, and is increasingly entering the daily lives of ordinary people. Efficient and high-quality treatment of sewage has great practical significance for the protection of water resources and the formation of sustainable development industries. When using a filter to filter sewage in depth, the waste impurities contained in the sewage may affect the filtration system due to their large particles, reducing the filtration efficiency. At this time, it is necessary to filter the large amount of solid waste contained in the sewage.

[0004] Mechanical screens are one of the purification and filtering equipment produced in sewage treatment technology. They greatly reduce the labor intensity of workers, protect the health of workers, reduce the head loss of water inlet, and improve the efficiency of pumping stations. There are many types of mechanical screens, generally composed of screens that intercept pollutants, tooth rakes that remove pollutants intercepted by the screens, traction components that drive the tooth rakes to operate, and transmission devices. For example, the Chinese utility model patent publication number 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 dual-axis motor, so that the filter plate accumulates debris to the movable door and is cleaned; the Chinese utility model patent publication number CN201721438298.X discloses a screen decontamination system that filters sewage through an obliquely inserted screen; the Chinese utility model patent publication number CN201610546876.5 discloses a filtering mechanism of a swill separator that filters through a filter screen; however, the above patents all require external power to realize the rotation operation of the filter plate, which consumes energy and has high operation and maintenance costs. Summary of the invention

[0005] The technical problem to be solved by the present invention is how to achieve unpowered sewage filtration, save energy and reduce operation and maintenance costs.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] A mechanical grille comprises a box body, a grille body, a mechanical flipping device, a water tank and a cover plate, wherein the box body is an internal hollow structure, a water inlet and a water outlet are arranged on the box body, an opening is arranged at one end of the top of the box body close to the water inlet, 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 to one end of the mechanical flipping device, the end of the mechanical flipping device away from the grille body is connected to the water tank, the gravity of the water tank is less than the gravity of the grille body, the sewage on the top of the grille body can flow into the water tank, a water outlet is arranged on the water tank, and a cover plate capable of blocking the water outlet is fixed on the box body.

[0008] The mechanical screen uses sewage to flow into the water tank and drives the water tank down, causing the screen body to flip upward and automatically dump and collect the garbage filtered by the screen body. The entire filtration process does not require power, achieving unpowered sewage filtration, greatly saving energy and reducing operation and maintenance costs.

[0009] Preferably, the mechanical flipping 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 body at the opening, one end of the grille body away from the water inlet is fixed to the first rotating shaft, one end of the first connecting rod is fixed to the first rotating shaft, and the other end is hinged to the second connecting rod to form a connecting rod mechanism, and the end of the second connecting rod away from the first connecting rod is connected to the water tank; when the water tank descends, the first rotating shaft is driven to rotate through the connecting rod structure, causing the grille body to flip upward.

[0010] Preferably, the mechanical flipping device includes a second rotating shaft, a first rotating disk, a fixed pulley and a first pull rope, the second rotating shaft is rotatably fixed on the box body at the opening, one end of the grille body away from the water inlet is fixedly connected to 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 tank, one end of the first pull rope is wrapped around and fixed on the first rotating disk, and the other end is wrapped around the fixed pulley and connected to the water tank; when the water tank descends, the first rotating disk is driven to rotate by the first pull rope, and then the second rotating shaft is driven to rotate to cause the grille body to flip upward.

[0011] Preferably, the mechanical flipping device includes a third rotating shaft, a second rotating disk, a movable pulley and a second pull rope, the third rotating shaft is rotatably fixed on the box at the opening, one end of the grille body away from the water inlet is fixed to the third rotating shaft, the second rotating disk is fixed on the third rotating shaft, the movable pulley is fixed on the water tank, one end of the second pull rope is wrapped around and fixed on the second rotating disk, and the other end is wrapped around the movable pulley and connected to the box; when the water tank descends, the second rotating disk is driven to rotate by the second pull rope, and then the third rotating shaft is driven to rotate to cause the grille body to flip upward.

[0012] By setting the movable pulley, the lowering height of the water tank can be reduced, thereby reducing the overall height of the tank, and then reducing the height difference between the water inlet and the water outlet, and finally reducing the buried depth of the drainage pipe used to drain the filtered sewage, reducing construction costs.

[0013] Preferably, a limit rod is vertically fixed in the box body, a slide groove is vertically provided on the limit rod, and a sliding block is provided on the outer wall of the water tank which is clamped in the slide groove, so that the water tank moves vertically on the limit rod.

[0014] Preferably, it also includes a blocking device, which includes a telescopic spring, a fixed plate and a blocking plate. The top of the telescopic spring is fixed on the box body, and the bottom is connected to the fixed plate. One end of the fixed plate is vertically fixed to the blocking plate capable of blocking the water inlet, and the other end is arranged toward the grille body and fits the bottom of the grille body.

[0015] Preferably, the cover plate is fixed to the top of the box body by an elastic telescopic rod, and a first magnet capable of attracting the water tank is fixed to the bottom of the cover plate.

[0016] Preferably, a buffer spring is fixed to the bottom of the water tank or the bottom of the tank body.

[0017] Preferably, a water flow hole is provided on the grille body, and an output end of the water flow hole is arranged on the top of the water storage tank.

[0018] Preferably, a water trough plate is fixed between the water flow hole and the water storage tank, one end of the water trough plate is arranged at the bottom of the water flow hole, and the other end is arranged at the top of the water storage tank.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The mechanical screen uses sewage to flow into the water tank and drives the water tank to descend, causing the screen body to flip upward, and automatically dumps and collects the garbage filtered by the screen body. The entire filtering process does not require power, realizing unpowered sewage filtration, greatly saving energy and reducing operation and maintenance costs.

[0021] 2. By setting the movable pulley, the lowering height of the water tank can be reduced, thereby reducing the overall height of the tank, and then reducing the height difference between the water inlet and the water outlet, and finally reducing the buried depth of the drainage pipe used to drain the filtered sewage, reducing the construction cost.

[0022] 3. Through the setting of the blocking device, the water inlet can be automatically closed when the grille body is turned over to prevent sewage from entering the box after the grille body is turned over. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0024] Figure 2 It is a schematic diagram of a partial structure of the first embodiment of the present invention;

[0025] Figure 3 is a cross-sectional view of the first embodiment of the present invention;

[0026] Figure 4 for Figure 3 A magnified view of middle;

[0027] Figure 5 It is a partial structural diagram of the second embodiment of the present invention;

[0028] Figure 6 This is a schematic diagram of the structure of Embodiment 3 of the present invention;

[0029] Figure 7 It is a schematic diagram of the local structure of the third embodiment of the present invention. DETAILED DESCRIPTION

[0030] 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 is further described in conjunction with the accompanying drawings of the specification.

[0031] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0032] In this application, unless otherwise expressly specified and limited, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means two or more, unless otherwise clearly and specifically limited.

[0033] Embodiment 1

[0034] See also Figures 1 to 3The present embodiment discloses a mechanical grille, comprising a box body 1, a grille body 2, a mechanical turning device 3, a water storage tank 4, a water tank plate 5, a cover plate 6 and a blocking device 7. The box body 1 is an internal hollow structure, and a water inlet 101 and a water outlet 102 are provided on the box body 1. An opening 103 is provided at one end of the top of the box body close to the water inlet 101, and the grille body 2 is arranged in the opening 103. One end of the grille body is arranged at the bottom of the water inlet 101 to block the opening 103 and filter the sewage entering the water inlet 101, and the other end is fixed to one end of the mechanical turning device 3. The end of the mechanical flipping device 3 away from the grille body 2 is connected to the water tank 4, the top of the water tank 4 is open and the gravity is less than the gravity of the grille body 2; the top of the grille body 2 is also provided with a water hole 201, and a gutter plate 5 is fixed between the water hole 201 and the water tank 4, one end of the gutter plate 5 is arranged at the bottom of the water hole 201, and the other end is arranged at the top of the water tank 4, which is used to introduce the water flowing in from the water hole 201 into the water tank 4, and the bottom of the water tank 4 is provided with a water outlet hole 401, and the box body 1 at the top of the water tank 4 is fixed with a cover plate 6 that can block the water outlet hole 401.

[0035] The mechanical screen utilizes sewage to flow into the water tank 4 and drives the water tank to descend, causing the screen body 2 to flip upward, and automatically dumps and collects the garbage filtered by the screen body 2. The entire filtering process does not require power, realizing unpowered sewage filtration, greatly saving energy and reducing operation and maintenance costs.

[0036] The grille body 2 is funnel-shaped, and 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 flip device 3, and the other end is arranged toward the water inlet 101 and is lower than the height of the end of the front plate 202 connected to the mechanical flip device 3. The rear plate 203 is fixed to the end of the front plate 202 away from the mechanical flip device 3. The free end of the rear plate 203 is arranged toward the bottom of the water inlet 101 and is attached to the inner wall of the box body 1. The side plate 204 is also fixed between the front plate 202 and the rear plate 203. The side plate 204 is triangular and attached to the inner wall of the box body 1 to prevent sewage from entering the box body 1 without being filtered. 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 flip device 3.

[0037] 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. The end of the front plate 202 away from the water inlet 101 is fixed to the first rotating shaft 301. One end of the first connecting rod 302 is fixed to 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 is connected to the water storage tank 4. For details, refer to Figure 3 When the water tank 4 descends, the connecting rod structure drives the first rotating shaft 301 to rotate clockwise, thereby driving the grille body 2 to flip upward clockwise to dump the garbage, thereby realizing unpowered garbage cleaning.

[0038] Furthermore, the cover plate 6 is fixed to the top of the box body 1 by means of an elastic telescopic rod 8 that can be vertically telescopic. The elastic telescopic rod 8 is provided so that the cover plate 6 plays a buffering role when blocking the water outlet hole 401 on the water storage tank 4, and can also enable the cover plate 6 to be accurately aligned with the water outlet hole 401 to prevent the cover plate 6 from shifting. A first magnet (not marked in the figure) that can attract the water storage tank 4 is fixed at the bottom of the cover plate 6 to ensure that the cover plate 6 can block the water inlet hole 401; further, a sealing ring (not marked in the figure) is also provided on the water inlet hole 41 to improve the sealing performance between the cover plate 6 and the water inlet hole 401.

[0039] Furthermore, a second magnet 9 capable of sucking the bottom of the box body 1 is fixed at the bottom of the water tank 4, so that the water tank 4 sucks the box body 1 through the second magnet 9 when it descends. Specifically, an iron block is fixed on the bottom of the box body 1 at the bottom of the second magnet 9, or the bottom of the box body 1 is made of 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 box body 1 at the bottom of the water tank 4, and an iron block is fixed on the bottom of the water tank 4, or the bottom of the water tank 4 is made of iron material.

[0040] Since the second magnet 9 has a strong attraction when it attracts the box body 1 or the water tank 4, the water tank 4 will drop instantly, thereby driving the grille body 2 to vibrate, making it easier to dump the garbage on the grille body 2. Furthermore, the buffer spring 10 is fixed to the bottom of the water tank 4 or to the bottom of the box body 1 at the bottom of the water tank 4, so as to buffer the collision between the water tank 4 and the bottom of the box body 1, thereby increasing the service life of the water tank 4 and the box body 1.

[0041] See also Figure 4The 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 to the box 1 at the bottom of the water inlet 101. The bottom of the telescopic spring 701 is connected to the fixed plate 702. One end of the fixed plate 702 is vertically fixed to the blocking plate 703 capable of blocking the water inlet 101, and the other end is arranged toward the rear plate 203 on the grille body 2. When filtering, the grille body 2 is such that the rear plate 203 and the fixed plate 702 are in contact with each other, and is used to press the fixing plate 702. The fixing plate 702 makes the blocking plate 703 move away from the water inlet 101, thereby opening the water inlet 101. At this time, the telescopic spring 701 is in a stretched state. When the grid body 2 flips upward, the rear plate 203 loses the pressure on the fixing plate 702, and the telescopic spring 701 returns to its natural state, which will drive the fixing plate 702 to move upward, thereby making the blocking plate 703 move upward and block the water inlet 101, thereby realizing the automatic opening and closing of the water inlet 101, and preventing sewage from entering the box body 1 after the grid body 2 is flipped.

[0042] The working principle of the present invention is as follows: before the sewage enters the box body 1, since the gravity of the water tank 4 is less than the gravity of the grille body 2, the grille body 2 is located below the water inlet 101, and the rear plate 203 presses the fixing plate 702, so that the blocking plate 703 is away from the water inlet 101, thereby opening the water inlet 101, and the sewage enters the box body 1 and is filtered through the drain holes 2021 on the front plate 202. After filtration, impurities remain on the grille body 2, and the filtered water is discharged from the water outlet 102.

[0043] When the impurities on the grille body 2 block the drain hole 2021 on the front plate 202, the sewage cannot be filtered, causing the water level on the upper part of the grille body 2 to rise, and the sewage enters from the water hole 201 and is stored in the water tank 4 through the trough plate 5, causing the gravity of the water tank 4 to increase. When the gravity in the water tank 4 is greater than the gravity of the grille body 2, the water tank 4 descends and drives the first rotating shaft 301 to rotate clockwise through the connecting rod mechanism composed of the first connecting rod 302 and the second connecting rod 303, thereby driving the grille body 2 to turn up clockwise. At this time, the rear plate 203 on the grille body 2 loses the pressure on the fixed plate 702, and the telescopic spring 701 will drive the fixed plate 702 to move upward, thereby causing the blocking plate 703 to move upward and block the water inlet, preventing sewage from entering the box 1 after the grille body 2 is turned over. After the grille body 2 is flipped upward, the garbage on the grille body 2 slides to the top of the box body 1 under the action of gravity and is collected; while the grille body 2 is flipped, the cover plate 6 on the water outlet 401 at the bottom of the water tank 4 is opened as the water tank 4 descends, and the second magnet 9 attracts the box body 1. Since the attraction of the second magnet 9 when attracting the box body 1 is large, the water tank 4 will drop instantly, thereby driving the grille body 2 to vibrate, making it easier to remove the garbage on the grille body 2. As the gravity of the water tank 4 decreases, until the gravity of the water tank 4 is less than that of the grille body 2, the water tank 4 will be removed. When the grille body 2 is rotated, the grille body 2 rotates to the initial filtering position and drives the first rotating shaft 301 to rotate counterclockwise, and then drives the water storage tank 4 to rise through the connecting rod mechanism composed of the first connecting rod 302 and the second connecting rod 303, the second magnet 9 is separated from the bottom of the box body 1, and the cover plate 6 blocks the water outlet 401; in addition, when the grille body 2 rotates, the rear plate 203 presses the fixed plate 703 to move downward, causing the blocking plate 703 to move downward and away from the water inlet 101, thereby realizing the opening of the water inlet 101 and filtering the subsequent sewage.

[0044] Embodiment 2

[0045] See also Figure 5 The difference between this embodiment and the first embodiment is that the mechanical turning device 3 includes a second rotating shaft 304, a first rotating disk 305, a fixed pulley 306 and a first pull rope 307. The second rotating shaft 304 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 fixed to the second rotating shaft 304. Both ends of the second rotating shaft 304 are fixed to the first rotating disk 305. The fixed pulley 306 is fixed to the inner wall of the box body 1 at the top of the water storage tank 4. One end of the first pull rope 307 is wound in a clockwise direction and fixed on the first rotating disk 305, and the other end is wound around the fixed pulley 306 and connected to the water storage tank 4. Specifically, when the water storage tank 4 is lowered, the first rotating disk 305 is driven to rotate clockwise by the first pull rope 307, and then the second rotating shaft 304 is driven to rotate clockwise, so that the grill body 2 is turned up clockwise to dump garbage, and the garbage is cleaned without power.

[0046] Embodiment 3

[0047] See also Figure 6 and Figure 7 The difference between this embodiment and embodiment 1 is that the mechanical turning device 3 includes a third rotating shaft 308, a second rotating disk 309, a movable pulley 310 and a second pull rope 311, the third rotating 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 fixed to the third rotating shaft 308, both ends of the third rotating shaft 308 are fixed to the second rotating disk 309, the two movable pulleys 310 are respectively fixed to the outer walls of the water tank 4 on both sides, one end of the second pull rope 311 is wound around and fixed on the second rotating disk 309 in a clockwise direction, and the other end is wound around the movable pulley 310 and then fixed to the inner wall of the box body 1. Specifically, when the water 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 rope 311, thereby driving the third rotating shaft 308 to rotate clockwise, causing the grille body 2 to flip upward clockwise to dump garbage, thereby realizing unpowered garbage cleaning.

[0048] It should be noted here that, in the actual sewage pipe construction process, it is necessary to reduce the height difference between the drainage pipe used to drain the sewage before filtration and the drainage pipe used to drain the sewage after filtration, thereby reducing the buried depth of the drainage pipe used to drain the filtered sewage and reducing the construction cost; in this embodiment, the setting of the movable pulley 309 is adopted, which can reduce the lowering height of the water tank 4, which is close to half of the lowering height of the water tank 4 in the first embodiment, thereby reducing the overall height of the box body 1, and then reducing the height difference between the water inlet 101 and the water outlet 102, and finally reducing the buried depth of the drainage pipe used to drain the filtered sewage and reducing the construction cost.

[0049] Furthermore, the limit rod 11 is vertically fixed in the box body 1, and a slide groove (not marked in the figure) is vertically provided on the limit rod 11. The outer wall of the water tank 4 is provided with a slider 12 which is clamped in the slide groove, so that the water tank 4 can move vertically on the limit rod 11 to prevent the water tank 4 from shifting in the vertical direction, thereby ensuring that the cover plate 6 can be accurately aligned with the water outlet 401 to achieve the blocking of the water outlet 401.

[0050] Embodiment 4:

[0051] The difference between this embodiment and the above-mentioned embodiments 1 to 3 is that the water flow hole 201 is arranged on the side plate 204. When the upper drainage hole of the front plate 202 is blocked, the sewage flows into the water storage tank 4 from the water flow hole 201 on the side plate 204; of course, water flow holes 201 can also be arranged on both the side plate 204 and the front plate 202, and the sewage enters the water storage tank 4 from the water flow holes 201 at the two locations.

[0052] Furthermore, when both the side plate 204 and the front plate 202 are provided with water holes 201, the height of the water holes 201 on the side plate 204 is higher than the height of the water holes on the front plate 202. Specifically, when the sewage on the upper part of the grille body 1 has floating objects that block the water holes 201, water cannot enter the water tank 4 from the water holes 201 on the front plate 202. The water level further rises until it is the same height as the water holes 201 on the side plate 204. Water enters from the water holes 201 on the side plate 204 and flows into the water tank 4 through the gutter plate 5, thereby achieving the lowering of the water tank 4 and driving the grille body 2 to rotate. This process also does not require the use of external power to introduce water into the water tank 4, thereby achieving unpowered operation.

[0053] Embodiment 5

[0054] In this embodiment, based on 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 body, which may specifically be a garbage collection frame or a garbage collection basket.

[0055] Embodiment 6

[0056] Based on the fifth embodiment, this embodiment is provided with a garbage full reminder mechanism on the top of the box body. In this embodiment, the garbage full reminder mechanism is a gravity sensor, and the garbage collection mechanism is placed on the top of the garbage full reminder mechanism. When the gravity of the garbage collection mechanism meets the set value of the garbage full reminder mechanism, the garbage full reminder mechanism will automatically alarm to remind the staff that the garbage collection mechanism is full of garbage, and it is necessary to further transport the garbage collection mechanism and replace it with an empty garbage collection mechanism for garbage collection.

[0057] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-limiting from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any reference numerals in the claims should not be regarded as limiting the claims involved.

[0058] The above-described embodiments merely represent implementation methods of the invention. The protection scope of the present invention is not limited to the above-described embodiments. For those skilled in the art, several modifications and improvements may be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A mechanical grille, characterized in that: It comprises a box body, a grille body, a mechanical turning device, a water storage tank and a cover plate, wherein the box body is an internal hollow structure, a water inlet and a water outlet are arranged on the box body, an opening is arranged at one end of the top of the box body close to the water inlet, 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 to one end of the mechanical turning device, the end of the mechanical turning device away from the grille body is connected to the water storage tank, the gravity of the water storage tank is less than the gravity of the grille body, the sewage on the top of the grille body can flow into the water storage tank, a water outlet is arranged on the water storage tank, and a cover plate capable of blocking the water outlet is fixed on the box body; The mechanical flipping device includes a second rotating shaft, a first rotating disk, a fixed pulley and a first pull rope, the second rotating shaft is rotatably fixed on the box body at the opening, one end of the grille body away from the water inlet is fixedly connected to 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 tank, one end of the first pull rope is wound around and fixed on the first rotating disk, and the other end is wound around the fixed pulley and connected to the water tank; when the water tank descends, the first rotating disk is driven to rotate by the first pull rope, and then the second rotating shaft is driven to rotate to cause the grille body to flip upward.

2. A mechanical grille according to claim 1, characterized in that: It also includes a blocking device, which includes a telescopic spring, a fixed plate and a blocking plate. The top of the telescopic spring is fixed on the box body, and the bottom is connected to the fixed plate. One end of the fixed plate is vertically fixed to the blocking plate capable of blocking the water inlet, and the other end is set toward the grille body and fits the bottom of the grille body.

3. A mechanical grille according to claim 1, characterized in that: The cover plate is fixed to the top of the box body through an elastic telescopic rod, and a first magnet capable of attracting the water tank is fixed to the bottom of the cover plate.

4. A mechanical grille according to claim 1, characterized in that: A buffer spring is fixed at the bottom of the water storage tank or the bottom of the box body.

5. A mechanical grille according to claim 1, characterized in that: The grille body is provided with a water flow hole, and the output end of the water flow hole is arranged on the top of the water storage tank.

6. A mechanical grille according to claim 5, characterized in that: A water tank plate is fixed between the water flow hole and the water storage tank, one end of the water tank plate is arranged at the bottom of the water flow hole, and the other end is arranged at the top of the water storage tank.

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