Automatic opening and closing device of drainage grate

Abstract

The utility model discloses an automatic opening and closing device of a drainage grate, which relates to the field of urban drainage, is arranged below the drainage grate, and comprises a transverse shaft, a vertical shaft, a vertical shaft and a vertical shaft, the middle of the prying rod is connected with the transverse shaft, and one end of the prying rod is connected with the prying shaft; an opening and a water leakage hole are formed in the top and the bottom of the water storage tank respectively, and the water storage tank is connected with the other end of the prying rod; when the water inlet speed of the water storage tank is larger than the water drainage speed, and the water storage capacity of the water storage tank reaches the weight capable of prying the water drainage grate, the water storage tank moves downwards, the prying shaft moves upwards, and the prying shaft is attached to one end of the water drainage grate and jacks up the water drainage grate; the automatic opening and closing device adopts fewer parts, realizes the automatic opening and closing of the existing drainage grate by utilizing the gravity of rainwater, and can be used for a large number of existing gutter inlets which are installed and used in cities.

Description

Technical Field

[0001] The utility model belongs to the field of urban drainage, and more specifically, relates to an automatic opening and closing device for a drainage grate. Background Art

[0002] With the increase of hardened road surfaces, it is inevitable to cause an increase in rainwater runoff, which requires that the rainwater inlets can pass water smoothly to ensure that rainwater can be discharged in a timely and safe manner. However, fallen leaves, garbage, etc. on urban roads usually accumulate at the grate grid along with the rainwater runoff, resulting in the grate being blocked, affecting the normal discharge of rainwater runoff. Seriously, it will also cause local waterlogging on the road.

[0003] Some drainage grates adopt two sub-upper grate panels that are hinged together, and a lower grate panel is arranged below the upper grate panel, including two sub-lower grate panels that are hinged together; both ends of the upper grate panel are respectively hinged to both ends of the lower grate panel, and the downward folding of multiple sub-lower grate panels can drive the upward folding of multiple sub-upper grate panels; this drainage grate sets the upper grate panel and the lower grate panel in the grate seat, and through the hinged method, the sub-upper grate panel and the sub-lower grate panel are kept in linkage. When the sub-lower grate panel is affected by the gravity of rainwater, it will fold downward to open, improving the flow-through capacity. When there is no rainwater flowing in, the upper grate panel will unfold and lay on the grate seat under the action of gravity, driving the sub-lower grate panel to also unfold to intercept sundries flowing into the grate seat and prevent sundries from entering. The disadvantage of this design is that it is necessary to replace the new drainage grate, and the increased drainage function cannot be realized for a large number of existing drainage grates.

[0004] The automatic opening device of some rainwater grates is arranged on the lower side of the rainwater grate, and includes: a frame structure; two first transmission arms, the two first transmission arms are in an inverted V shape, the middle of the first transmission arm is hinged to the frame structure, and the top of the first transmission arm is in contact with the rainwater grate; a water tank structure, the water tank structure is hinged to the bottom end of the first transmission arm, and the water tank structure is provided with a drain hole; this automatic opening device adopts a pure mechanical structure, collects road surface rainwater through the water tank structure, and drives the rainwater grate to rise by using the lever principle; when the speed of collecting rainwater on the road surface is less than the drainage speed of the water tank structure, the rainwater grate closes by its own gravity, so that automatic opening when there is road waterlogging and automatic closing when there is no waterlogging can be realized.

[0005] This design involves many components, resulting in reduced reliability of the overall mechanism and increased costs. Moreover, placing many components in the rainwater inlet will affect the drainage effect and is not conducive to popularization and use. Content of the Utility Model

[0006] The purpose of the present utility model is to address the deficiencies existing in the prior art and provide an automatic opening and closing device for a drain grate. This automatic opening and closing device uses fewer components and utilizes the gravity of rainwater to achieve the automatic opening and closing of existing drain grates, and can be used for a large number of existing rainwater inlets already installed and in use in cities.

[0007] To achieve the above purpose, the present utility model provides an automatic opening and closing device for a drain grate. This automatic opening and closing device is arranged below the drain grate and includes:

[0008] A horizontal shaft, with both ends connected to the brick stone walls of the rainwater inlet;

[0009] A lever, with its middle part connected to the horizontal shaft, and one end of the lever connected to a pry shaft;

[0010] A water storage tank, with an opening and a water leakage hole provided at the top and bottom respectively, and the water storage tank is connected to the other end of the lever;

[0011] When the water inlet speed of the water storage tank is greater than the drainage speed, and the water storage capacity of the water storage tank reaches the weight capable of prying the drain grate, the water storage tank moves downward and the pry shaft moves upward. The pry shaft abuts against one end of the drain grate and jacks it up.

[0012] Optionally, a concave card slot is provided in the middle part of the lever, and the card slot is connected to the horizontal shaft in a clamping manner.

[0013] Optionally, there are two levers, and the levers are respectively arranged at both ends of the horizontal shaft.

[0014] Optionally, a limiting sleeve and two fixed sleeves are sleeved on the horizontal shaft. The fixed sleeves are respectively arranged at both ends of the limiting sleeve, and the lever is arranged between the fixed sleeve and the limiting sleeve.

[0015] Optionally, a rotating sleeve is sleeved on the pry shaft. When the pry shaft jacks up the drain grate, the rotating sleeve rolls and abuts against the drain grate.

[0016] Optionally, the rotating sleeve rolls along the rib direction of the drain grate.

[0017] Optionally, the lever is connected to the water storage tank through a suspension rod.

[0018] Optionally, a pin hole is provided at the other end of the lever, and the suspension rod is connected to the pin hole.

[0019] Optionally, the water storage tank is in a cuboid shape, and a plurality of water leakage holes are provided at the bottom and side of the water storage tank.

[0020] The present utility model provides an automatic opening and closing device for a drain grate, and its beneficial effects are as follows: The automatic opening and closing device for the drain grate includes a horizontal shaft and a pry bar. The pry bar can rotate around the horizontal shaft. When the water inlet speed at the opening of the water storage tank is greater than the water leakage speed, the water storage volume in the water storage tank increases. In this way, the water storage tank can press down the other end of the pry bar, and one end of the pry bar pushes up the pry shaft, so that the rotating sleeve is in contact with the drain grate. During the rolling process, the rotating sleeve will lift the drain grate from one end, and rainwater can enter from the side, increasing the drainage volume.

[0021] Other features and advantages of the present utility model will be described in detail in the following specific implementation part. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] By describing the exemplary embodiments of the present utility model in more detail in conjunction with the drawings, the above and other objects, features, and advantages of the present utility model will become more obvious. Among them, in the exemplary embodiments of the present utility model, the same reference numerals generally represent the same components.

[0023] Figure 1 The schematic diagram shows an automatic opening and closing device for a drain grate in an open state according to an embodiment of the present utility model.

[0024] Figure 2 The schematic diagram shows an automatic opening and closing device for a drain grate in a closed state according to an embodiment of the present utility model.

[0025] Figure 3 The top view shows an automatic opening and closing device for a drain grate according to an embodiment of the present utility model.

[0026] Description of the reference numerals:

[0027] 1, horizontal shaft; 2, pry bar; 3, pry shaft; 4, water storage tank; 5, drain grate; 6, limit sleeve; 7, fixed sleeve; 8, rotating sleeve; 9, suspension rod; 10, grate support; 11, grate pin. SPECIFIC EMBODIMENTS

[0028] The following will describe the preferred embodiments of the present utility model in more detail. Although the following describes the preferred embodiments of the present utility model, it should be understood that the present utility model can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present utility model more thorough and complete, and to be able to fully convey the scope of the present utility model to those skilled in the art.

[0029] The present utility model provides an automatic opening and closing device for a drain grate. The automatic opening and closing device is arranged below the drain grate and includes:

[0030] The horizontal axis is connected to the brick walls of the rainwater inlet at both ends;

[0031] The prying rod is connected to the horizontal axis in the middle, and one end of the prying rod is connected to the prying shaft;

[0032] The water storage tank is provided with an opening and a water leakage hole at the top and bottom respectively, and the water storage tank is connected to the other end of the prying rod;

[0033] When the water inlet speed of the water storage tank is greater than the drainage speed, and the water storage volume of the water storage tank reaches the weight that can pry the drain grate, the water storage tank moves downward and the prying shaft moves upward. The prying shaft fits against one end of the drain grate and lifts it up.

[0034] Specifically, the automatic opening and closing device is arranged below the drain grate. When the amount of rainwater entering the rainwater inlet is greater than the drainage volume of the water leakage holes of the water storage tank, water will start to accumulate in the water storage tank. Slowly, the prying rod will tilt towards the water storage tank side, and at the same time, the prying shaft will also move upward until it fits against the bottom side of the drain grate. When the accumulated water in the water storage tank increases to be greater than the weight of prying the drain grate, the prying shaft will lift the drain grate, so that rainwater can flow into the rainwater inlet from the side where the drain grate is lifted, increasing the drainage volume; when the amount of rainwater decreases, the drainage speed of the water leakage holes of the water storage tank is greater than the water inlet speed of the opening, so the water level of the water storage tank will decrease. When the weight of the accumulated water in the water storage tank is less than the weight of prying the drain grate, the drain grate will press down the prying shaft, thus automatically closing the drain grate. In this way, the effect of automatically opening and closing the drain grate can be achieved, and the structure is simple, which can be realized only by the rainwater weight and the lever principle, and the future maintenance is simple.

[0035] Optionally, a concave card slot is arranged in the middle of the prying rod, and the card slot is connected to the horizontal axis in a clamping manner.

[0036] Specifically, when there is a tendency for the accumulated water in the water storage tank to increase, the prying rod will rotate around the horizontal axis. When the weight of the drain grate is not enough to pry the drain grate, the prying rod will still rotate around the horizontal axis. Therefore, the prying rod and the horizontal axis must be set in a hinged connection manner. By opening a card slot on the prying rod and connecting the prying rod and the horizontal axis through clamping connection, the connection stability can be ensured, and the prying rod can also rotate freely on the horizontal axis.

[0037] Optionally, two prying rods are provided, and the prying rods are respectively arranged at both ends of the horizontal axis.

[0038] Specifically, in order to achieve the effect of lifting the drain grate when the accumulated water in the water storage tank increases, the water storage tank needs to be set with a larger accommodation volume. In this case, two pry bars also need to be set so as to transfer the gravity of the accumulated water in the water storage tank to the pry bars, ensuring the stability of the movement and avoiding the phenomena of bending deformation and breakage of the pry bars.

[0039] Optionally, a limit sleeve and two fixed sleeves are sleeved on the transverse shaft. The fixed sleeves are respectively arranged at both ends of the limit sleeve, and a pry bar is arranged between the fixed sleeve and the limit sleeve.

[0040] Specifically, in order to ensure the stable force transmission between the pry bar and the pry shaft, the clamping position of the pry bar on the transverse shaft needs to be fixed. A limit sleeve and a fixed sleeve are sleeved on the transverse shaft. In this way, through the limitation of both sides of the pry bar by the two sleeves, it can be ensured that during the rotation of the pry bar, there will be no axial displacement along the transverse shaft and it will not affect the free rotation of the pry bar on the transverse shaft.

[0041] Optionally, a rotating sleeve is sleeved on the pry shaft. When the pry shaft lifts the drain grate, the rotating sleeve rolls and fits with the drain grate.

[0042] Optionally, the rotating sleeve rolls along the rib direction of the drain grate.

[0043] Specifically, when the gravity of the accumulated water in the water storage tank can pry the drain grate, the pry shaft will lift the drain grate. In order to ensure the smoothness of the lift of the drain grate, a rotating sleeve is sleeved on the pry shaft. In this way, during the process of lifting the drain grate, the rotating sleeve rotates on the outer periphery of the pry shaft, and the rotating sleeve rolls and fits with the bottom side of the drain grate, making the opening of the drain grate smoother; the rotating sleeve always fits with the ribs of the drain grate, so that the movement will not be stuck because the rotating sleeve gets stuck in the drain holes of the drain grate.

[0044] Optionally, the pry bar is connected to the water storage tank through a suspension rod.

[0045] Optionally, a pin hole is provided at the other end of the pry bar, and the suspension rod is connected to the pin hole.

[0046] Specifically, the pry bar is connected to the water storage tank through a suspension rod for hoisting. When the accumulated water in the water storage tank reaches a certain amount, it is quickly transmitted to the pry bar through the suspension rod, so that the pry bar can drive the pry shaft to lift the drain grate without any action delay.

[0047] Optionally, a grate support is provided at the edge of the rainwater inlet, and the other end of the grate support is hinged to the drain grate through a grate pin.

[0048] Specifically, since the water storage tank and the prying shaft are respectively arranged on both sides of the transverse shaft, and the transverse shaft is arranged in the middle of the rainwater inlet, one end of the prying rod will be pressed down by gravity to achieve the action of prying up the other end. Therefore, the drain grate needs to be set into a structure where one end is hinged and fixed, and the other end can be completely separated from the grate support. In this way, when the weight of the accumulated water in the water storage tank is greater than that for prying the drain grate, the prying shaft can lift the drain grate.

[0049] Optionally, the water storage tank is in a cuboid shape, and a plurality of water leakage holes are arranged at the bottom and the side of the water storage tank.

[0050] Specifically, the water storage tank is set to be larger according to the cross-sectional size of the rainwater inlet. In addition, the water storage tank is in a cuboid shape, so that it can hold more accumulated water and can lift a heavier drain grate; a number of water leakage holes are respectively arranged on each surface of the water storage tank, so that the water leakage speed of the water storage tank can be increased. Only when the water inlet speed of the rainwater inlet is fast enough, will the accumulated water in the water storage tank increase, so as to realize the lifting of the drain grate, enable the lateral water inlet of the drain grate, increase the drainage volume, and when the water inlet speed of the rainwater inlet is insufficient, the drain grate will not be opened, preventing foreign objects from entering the sewer pipe and causing the drain grate to lose its interception function.

[0051] Embodiment

[0052] As Figures 1 to 3 shown, the present utility model provides an automatic opening and closing device for a drain grate. The automatic opening and closing device is arranged below the drain grate 5 and includes:

[0053] A transverse shaft 1, with both ends connected to the brick stone walls of the rainwater inlet;

[0054] A prying rod 2, with the middle part connected to the transverse shaft 1, and one end of the prying rod 2 connected to a prying shaft 3;

[0055] A water storage tank 4, with an opening and water leakage holes respectively arranged at the top and the bottom, and the water storage tank 4 is connected to the other end of the prying rod 2;

[0056] When the water inlet speed of the water storage tank 4 is greater than the drainage speed, and the water storage capacity of the water storage tank 4 reaches the weight that can pry the drain grate 5, the water storage tank 4 moves downward and the prying shaft 3 moves upward. The prying shaft 3 abuts against one end of the drain grate 5 and lifts it up.

[0057] In this embodiment, a concave card slot is arranged in the middle of the prying rod 2, and the card slot is connected to the transverse shaft 1 in a clamping manner.

[0058] In this embodiment, there are two prying rods 2, and the prying rods 2 are respectively arranged at both ends of the transverse shaft 1.

[0059] In this embodiment, a limiting sleeve 6 and two fixed sleeves 7 are sleeved on the transverse shaft 1. The fixed sleeves 7 are respectively arranged at both ends of the limiting sleeve 6, and a prying rod 2 is arranged between the fixed sleeve 7 and the limiting sleeve 6.

[0060] In this embodiment, a rotating sleeve 8 is sleeved on the prying shaft 3. When the prying shaft 3 jacks up the drain grate 5, the rotating sleeve 8 rolls and fits with the drain grate 5.

[0061] In this embodiment, the rotating sleeve 8 rolls along the rib direction of the drain grate 5.

[0062] In this embodiment, the prying rod 2 and the water storage tank 4 are connected by a hanging rod 9.

[0063] In this embodiment, a pin hole is arranged at the other end of the prying rod 2, and the hanging rod 9 is connected with the pin hole.

[0064] In this embodiment, a grate support 10 is arranged at the edge of the rainwater inlet. The grate support 10 and the other end of the drain grate 5 are hinged and connected by a grate pin 11.

[0065] In this embodiment, the water storage tank 4 is in a cuboid shape, and a plurality of water leakage holes are arranged at the bottom and the side of the water storage tank 4.

[0066] In summary, when the rainwater runoff volume discharged into the rainwater inlet is large in the automatic opening and closing device of the drain grate, the flow rate through the rainwater inlet is large, so that the water inflow volume of the water storage tank 4 is greater than the water leakage volume, and more rainwater is stored therein. The weight of the water storage tank 4 and the water therein pulls the prying rod 2 downward, rotates by a certain angle around the transverse shaft 1, and the end with the prying shaft 3 tilts upward, driving the rotating sleeve 8 to roll on the ribs of the drain grate 5, so that the drain grate 5 is opened by a certain angle on one side along the curbstone, realizing the lateral water inlet of the rainwater inlet and increasing the drainage volume; when the rainfall decreases and the rainwater runoff volume on the road surface decreases, the water volume entering the water storage tank 4 decreases, so that the water inflow volume of the water storage tank 4 is less than the water leakage volume, the weight of the water storage tank 4 and the stored water therein is reduced, which is not enough to pry the drain grate 5, and the drain grate 5 returns to its original position.

[0067] The embodiments of the present invention have been described above. The above description is exemplary and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those of ordinary skill in the art in the technical field without departing from the scope and spirit of the described embodiments.

Claims

1. An automatic opening and closing device for a drain grate, characterized in that, The automatic opening and closing device is arranged below the drain grate and includes: A horizontal shaft with both ends connected to the brick stone walls of the rainwater inlet; A prying rod with the middle part connected to the horizontal shaft, and one end of the prying rod connected to a prying shaft; A water storage tank with an opening and a leakage hole provided at the top and bottom respectively, and the water storage tank is connected to the other end of the prying rod; When the water inlet speed of the water storage tank is greater than the drainage speed, and the water storage capacity of the water storage tank reaches the weight that can pry the drain grate, the water storage tank moves downward and the prying shaft moves upward, and the prying shaft abuts against one end of the drain grate and jacks it up.

2. The automatic opening and closing device for the drain grate according to claim 1, characterized in that, A concave card slot is provided in the middle part of the prying rod, and the card slot is connected to the horizontal shaft in a clamped manner.

3. The automatic opening and closing device for the drain grate according to claim 1, characterized in that, There are two prying rods, which are respectively arranged at both ends of the horizontal shaft.

4. The automatic opening and closing device of the drain grate according to claim 3, characterized in that, A limit sleeve and two fixed sleeves are sleeved on the horizontal shaft, the fixed sleeves are respectively arranged at both ends of the limit sleeve, and the prying rod is arranged between the fixed sleeve and the limit sleeve.

5. The automatic opening and closing device of the drain grate according to claim 4, characterized in that, A rotating sleeve is sleeved on the prying shaft. When the prying shaft jacks up the drain grate, the rotating sleeve rolls and fits with the drain grate.

6. The automatic opening and closing device for the drain grate according to claim 5, characterized in that, The rotating sleeve rolls along the rib direction of the drain grate.

7. The automatic opening and closing device for the drain grate according to claim 1, characterized in that, The prying rod is connected to the water storage tank through a suspension rod.

8. The automatic opening and closing device for the drain grate according to claim 7, characterized in that, A pin hole is provided at the other end of the prying rod, and the suspension rod is connected to the pin hole.

9. The automatic opening and closing device of the drain grate according to claim 1, characterized in that, The water storage tank is in a cuboid shape, and a plurality of leakage holes are provided at the bottom and the side of the water storage tank.

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