Well lid device of self-cleaning municipal catch basin

Abstract

The utility model belongs to the technical field of municipal catch basin accessories, and particularly relates to a well lid device of a self-cleaning municipal catch basin. The utility model provides a well lid device of a self-cleaning municipal catch basin, and aims to solve the problem that a filter screen on a well lid in the prior art is easy to block. A well lid device of a self-cleaning municipal catch basin comprises a cover plate, and rainwater holes allowing rainwater to pass through are formed in the cover plate; according to the utility model, the filter is arranged, the cross section area of the filter is gradually increased, and the dirt accumulation groove is designed, so that the filtered dirt can smoothly slide into the dirt accumulation groove, and the blocking risk of the filter holes is reduced. By means of the design, the well lid device can keep high filtering efficiency in the long-term using process, and the cleaning period is prolonged. According to the self-cleaning type well lid device, the manual cleaning frequency is reduced, and therefore the maintenance cost is reduced. A worker can regularly clean dirt in the dirt accumulation groove, and the whole well lid device does not need to be frequently disassembled and cleaned.

Description

Technical Field

[0001] The utility model belongs to the technical field of municipal rainwater well accessories, and particularly relates to a manhole cover device for a self-cleaning municipal rainwater well. Background Art

[0002] Municipal engineering is an important part of urban infrastructure construction. During the construction of municipal roads, the construction of the underground drainage system is often involved. At present, the drainage system mainly includes drainage pipes arranged underground and rain and sewage wells connecting the road surface and the drainage pipes. When it rains, rainwater enters the rain and sewage wells and then enters the sewer or drainage pipes.

[0003] When rainwater falls to the ground to form runoff, it will contain a large amount of debris, and the pollution of rainwater runoff is becoming more and more serious. At present, a filter screen is generally arranged on the manhole cover of the rain and sewage well to filter dirt. However, due to the large amount of debris in the rainwater, the filter screen is easily blocked, resulting in the inability of rainwater to enter the drainage system in time. Content of the Utility Model

[0004] The utility model provides a manhole cover device for a self-cleaning municipal rainwater well, aiming to solve the problem that the filter screen on the manhole cover in the prior art is easily blocked.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is as follows:

[0006] A manhole cover device for a self-cleaning municipal rainwater well, including a cover plate, and rainwater holes for rainwater to pass through are arranged on the cover plate;

[0007] A filter is arranged below the cover plate. The filter includes an upper end close to the cover plate and a lower end opposite to the upper end. The cross-sectional area of the filter gradually increases from the upper end to the lower end, and filter holes are evenly distributed on the filter;

[0008] A dirt accumulation groove is further arranged below the cover plate. Drainage holes are evenly distributed on the dirt accumulation groove. The dirt accumulation groove surrounds the filter, and the filter is fixed to the cover plate through the dirt accumulation groove;

[0009] The rainwater entering from the rainwater holes is filtered by the filter and then output. The dirt filtered out by the filter enters the dirt accumulation groove along the side wall of the filter under the action of gravity and the impact force of rainwater.

[0010] Further improved scheme: A rainwater guide is further arranged between the filter and the cover plate. The rainwater guide guides the rainwater entering from the rainwater holes to the middle of the filter.

[0011] Based on the above technical solution: Rainwater is centrally guided to the middle of the filter, enabling the filter to more effectively filter rainwater. Compared with the situation where rainwater is scattered on the surface of the filter, central guidance can ensure a more balanced utilization rate of each part of the filter, reduce the filtration blind area, and thus improve the overall filtration efficiency. The guide helps rainwater flow to the drainage area of the filter faster, reducing the retention time of rainwater on the cover plate, which helps improve the drainage speed of the system. Especially in the case of heavy rain or rainstorms, this design can significantly reduce the risk of water accumulation and ensure the smooth operation of the rainwater system. By reducing the accumulation and retention of rainwater on the cover plate, the guide helps reduce the risk of damage to the cover plate caused by long-term rain erosion. At the same time, centrally guiding rainwater to the middle of the filter can also reduce the scouring force at the edge of the filter and extend the service life of the filter.

[0012] Further improved solution: The guide is annular, and the guide is fixed to the cover plate by screws.

[0013] Based on the above technical solution: Fixing the annular guide to the cover plate by screws ensures the stability and reliability of the guide during long-term use, and it is not easy to loosen or displace. The annular structure itself has good rigidity and strength, and with the fixing effect of the screws, the guide can better resist external forces such as rainwater scouring and maintain the stability of its position.

[0014] Further improved solution: The guide includes a guiding ring for guiding rainwater and a fixing ring for fixing the guiding ring to the cover plate, and the fixing ring and the guiding ring are of an integral structure.

[0015] Based on the above technical solution: Since the fixing ring and the guiding ring are of an integral structure, it avoids the possible loosening or fracture problems at the connection, enhancing the stability and strength of the overall structure. The integral structure reduces the risk of structural deformation or damage caused by long-term use and external environmental influences, and improves the durability of the guide. The design of the guiding ring can ensure that rainwater is smoothly guided to the middle of the filter after entering through the rainwater holes, avoiding the accumulation and splashing of rainwater and improving the filtration efficiency. The integral-structure guide reduces unnecessary resistance during the rainwater flow process, enabling rainwater to enter the filter more quickly through the guide and improving the drainage efficiency.

[0016] Further improved solution: The guiding ring is provided with an arc-shaped guiding surface, and the rainwater entering through the rainwater holes enters the middle of the filter through the arc-shaped guiding surface, and the fixing ring is in surface contact with the cover plate.

[0017] Based on the above technical solution: The arc design can guide the rainwater to flow more naturally and smoothly, avoiding the accumulation and splashing of rainwater on the guiding ring. This design enables the rainwater to be more evenly distributed in the middle of the filter, improving the filtration efficiency. The arc guiding surface reduces the resistance during the flow of rainwater, allowing the rainwater to enter the filter through the guide more quickly and enhancing the drainage efficiency. The fixed ring and the cover plate are in surface contact. Compared with point contact or line contact, this design provides a larger contact area, thus enhancing the structural stability. During long-term use, the surface contact design can reduce the loosening problem caused by vibration or external forces. The surface contact design can also disperse the pressure between the fixed ring and the cover plate, reducing the deformation problem caused by pressure concentration and further improving the structural stability and durability.

[0018] Further improved solution: The dirt collection tank is provided with a slot for inserting the filter, and the lower end of the filter is inserted into the dirt collection tank.

[0019] Based on the above technical solution: By inserting the lower end of the filter into the slot of the dirt collection tank, a firm connection between the filter and the dirt collection tank is achieved. This design effectively prevents the filter from loosening or displacing during use due to vibration or external forces, ensuring the stability of the entire filtration system. The slot design simplifies the installation process of the filter. The operator only needs to align the lower end of the filter with the slot and insert it, without complex fixing steps or tools, reducing the installation difficulty and time cost. The slot design enables the filter to be easily removed from the dirt collection tank, facilitating subsequent cleaning and maintenance work. The operator only needs to gently pull out the filter to perform operations such as cleaning or replacement.

[0020] Further improved solution: The dirt collection tank includes an inner ring body and an outer ring body, the inner ring body and the outer ring body are connected by an annular bottom wall, and the drainage holes are provided on the inner ring body, the outer ring body, and the annular bottom wall.

[0021] Based on the above technical solution: Drainage holes are provided on the inner ring body, the outer ring body, and the annular bottom wall, which can significantly increase the drainage area and thus improve the drainage efficiency. This design enables the sewage in the dirt accumulation tank to be discharged more quickly, reducing the retention time of the sewage and lowering the corrosion risk of the dirt accumulation tank and the filter. The arrangement of multiple drainage holes allows the sewage to be more evenly distributed in various parts of the dirt accumulation tank, avoiding problems such as a decrease in filtration efficiency or blockage caused by local water accumulation. This helps to maintain the continuous and efficient operation of the filter and extend its service life. The inner ring body, the outer ring body, and the annular bottom wall jointly bear the weight and pressure of the dirt accumulation tank. Through the arrangement of multiple drainage holes, these pressures can be further dispersed, reducing the risk of structural damage caused by pressure concentration. The annular bottom wall connects the inner ring body and the outer ring body, forming a stable frame structure. This design enhances the overall anti-deformation ability of the dirt accumulation tank, enabling it to better adapt to different application scenarios.

[0022] Further improved solution: The slot is provided on the inner ring body, and the inner ring body is provided with an inclined surface that facilitates the dirt on the filter to enter the dirt accumulation tank, and the inclined surface is tangent to the outer wall of the filter.

[0023] Based on the above technical solution: The inclined surface design enables the dirt accumulated on the filter to slide more smoothly into the dirt accumulation tank, avoiding the accumulation and blockage of dirt between the filter and the dirt accumulation tank. This design improves the dirt collection efficiency and reduces the risk of filter blockage caused by dirt accumulation. Since the inclined surface is tangent to the outer wall of the filter, the dirt can be more naturally dispersed in the dirt accumulation tank during the sliding process, facilitating subsequent discharge and treatment. This helps to keep the filter clean and operate efficiently.

[0024] Further improved solution: The shape of the filter is hemispherical; alternatively, the shape of the filter is pyramidal; alternatively, the shape of the filter is conical.

[0025] Based on the above technical solution: Hemispherical, pyramidal, and conical filters each have their own characteristics and can be applied to different scenarios. For example, a hemispherical filter may be more suitable for occasions with relatively compact space; a pyramidal filter may be more suitable for occasions where it is necessary to disperse the water flow and reduce the risk of blockage; while a conical filter may be more suitable for occasions that require efficient filtration and dirt accumulation.

[0026] Further improved solution: The dirt accumulation tank is fixed to the cover plate by pins. The cover plate is provided with a fixing ring, the upper end of the dirt accumulation tank is inserted into the fixing ring, and pin holes matching the pins are provided on the side walls of the fixing ring and the side walls of the dirt accumulation tank.

[0027] Based on the above technical solution: The pin fixing method ensures a firm connection between the dirt accumulation groove and the cover plate. By passing the pins through the pin holes on the dirt accumulation groove and the fixing ring, a tight connection between the two is achieved, avoiding loosening or displacement caused by vibration or external forces. The pin fixing method has a strong load-bearing capacity and can withstand large pressures and loads, thereby improving the durability of the entire filtration system. The pin fixing method simplifies the installation process of the dirt accumulation groove. The operator only needs to insert the upper end of the dirt accumulation groove into the fixing ring and pass the pins through the corresponding pin holes, without complex fixing steps or tools, reducing the installation difficulty and time cost. Similar to the installation process, during disassembly, only the pins need to be pulled out, and the dirt accumulation groove can be easily removed from the fixing ring, providing convenience for subsequent cleaning, maintenance, or replacement.

[0028] The beneficial effects of the present utility model are as follows:

[0029] By setting up the filter in the present utility model, due to the gradually increasing cross-sectional area of the filter and the design of the dirt accumulation groove, the filtered dirt can smoothly slide into the dirt accumulation groove, reducing the risk of blockage of the filter holes. This design enables the manhole cover device to maintain a high filtration efficiency during long-term use and extends the cleaning cycle. The self-cleaning manhole cover device reduces the frequency of manual cleaning, thereby reducing the maintenance cost.

[0030] The staff can regularly clean the dirt in the dirt accumulation groove without frequently disassembling and cleaning the entire manhole cover device. The self-cleaning function of the manhole cover device helps to keep the rainwater well clean and unobstructed, reducing problems such as odors and sewage overflow caused by blockage. Description of the Drawings

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0032] Figure 1 It is a schematic diagram of the internal structure of a manhole cover device of a self-cleaning municipal rainwater well of the present utility model.

[0033] Figure 2 It is a schematic diagram of a manhole cover device of a self-cleaning municipal rainwater well of the present utility model.

[0034] Figure 3 It is an exploded view of a manhole cover device of a self-cleaning municipal rainwater well of the present utility model.

[0035] Figure 4It is a schematic diagram of a filter in the manhole cover device of a self-cleaning municipal rainwater well of the present utility model.

[0036] Explanation of reference numerals in the figure:

[0037] 1 - Cover plate; 2 - Rainwater hole; 3 - Filter; 4 - Filter hole; 5 - Dirt accumulation tank; 6 - Drainage hole; 7 - Guide; 8 - Guide ring; 9 - Fixed ring; 10 - Slot; 11 - Inner ring body; 12 - Outer ring body; 13 - Ring-shaped bottom wall; 14 - Fixed ring; 15 - Pin. Specific implementation manner

[0038] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0039] Reference Figures 1 to 4 , a manhole cover device of a self-cleaning municipal rainwater well, including a cover plate 1, and rainwater holes 2 for rainwater to pass through are provided on the cover plate 1;

[0040] A filter 3 is provided below the cover plate 1. The filter 3 includes an upper end close to the cover plate 1 and a lower end opposite to the upper end. The cross-sectional area of the filter 3 gradually increases from the upper end to the lower end, and filter holes 4 are evenly distributed on the filter 3;

[0041] A dirt accumulation tank 5 is also provided below the cover plate 1. Drainage holes 6 are evenly distributed on the dirt accumulation tank 5. The dirt accumulation tank 5 surrounds the filter 3, and the filter 3 is fixed to the cover plate 1 through the dirt accumulation tank 5;

[0042] The rainwater entering from the rainwater holes 2 is filtered by the filter 3 and then output. The dirt filtered out by the filter 3 enters the dirt accumulation tank 5 along the side wall of the filter 3 under the action of gravity and the impact force of rainwater.

[0043] Among them: A guide 7 for guiding rainwater is further provided between the filter 3 and the cover plate 1. The guide 7 guides the rainwater entering from the rainwater holes 2 to the middle of the filter 3.

[0044] The guide 7 is annular, and the guide 7 is fixed to the cover plate 1 by screws.

[0045] Reference Figures 1 to 4, specifically: the guide 7 includes a guide ring 8 for guiding rainwater and a fixing ring 9 for fixing the guide ring 8 to the cover plate 1, and the fixing ring 9 and the guide ring 8 are of an integral structure.

[0046] An arc-shaped guiding surface is provided on the guide ring 8, and the rainwater entering through the rainwater hole 2 enters the middle of the filter 3 through the arc-shaped guiding surface, and the fixing ring 9 and the cover plate 1 are in surface contact.

[0047] Wherein: a slot 10 for inserting the filter 3 is provided on the dirt accumulation groove 5, and the lower end of the filter 3 is inserted into the dirt accumulation groove 5.

[0048] The dirt accumulation groove 5 includes an inner ring body 11 and an outer ring body 12, the inner ring body 11 and the outer ring body 12 are connected by an annular bottom wall 13, and drain holes 6 are provided on the inner ring body 11, the outer ring body 12 and the annular bottom wall 13.

[0049] Reference Figures 1 to 4 , specifically: the slot 10 is provided on the inner ring body 11, and an inclined surface is provided on the inner ring body 11 to facilitate the dirt on the filter 3 to enter the dirt accumulation groove 5, and the inclined surface is tangent to the outer wall of the filter 3.

[0050] Wherein: the shape of the filter 3 is hemispherical; or, the shape of the filter 3 is pyramid-shaped; or, the shape of the filter 3 is conical.

[0051] Wherein: the dirt accumulation groove 5 is fixed to the cover plate 1 by a pin 15, a fixing ring 9 is provided on the cover plate 1, the upper end of the dirt accumulation groove 5 is inserted into the fixing ring 9, and pin holes for cooperating with the pin 15 are provided on the side wall of the fixing ring 9 and the side wall of the dirt accumulation groove 5.

[0052] The dirt accumulation groove 5 can also be fixed to the fixing ring 9 by bolts. The fixing ring 9 and the cover plate 1 can be of an integral structure.

[0053] The working principle of this embodiment:

[0054] When rainwater falls on the manhole cover, it will enter the inside of the manhole cover device through the rainwater holes 2 provided on the cover plate 1. The rainwater entering the inside of the manhole cover device will first encounter the filter 3. The cross-sectional area of the filter 3 gradually increases from the upper end to the lower end, and this design helps the rainwater to be evenly distributed in the filter 3, improving the filtering efficiency.

[0055] The filter holes 4 are evenly distributed on the filter 3. These filter holes 4 can intercept impurities and dirt in the rainwater and only allow clean rainwater to pass through. Due to the special shape of the filter 3, the intercepted dirt will slide down along the side wall of the filter 3 under the action of gravity and the impact force of rainwater, rather than clogging at the filter holes 4.

[0056] The dirt intercepted by the filter 3 and sliding down along the side wall will eventually enter the dirt accumulation tank 5. The dirt accumulation tank 5 is arranged around the filter 3 and is used to collect the filtered dirt. Drainage holes 6 are evenly distributed on the dirt accumulation tank 5. These drainage holes 6 allow the filtered clean rainwater to continue flowing out, while the dirt is left in the dirt accumulation tank 5.

[0057] The self-cleaning function of this device is mainly reflected in the special design of the filter 3 and the collection function of the dirt accumulation tank 5. Since the cross-sectional area of the filter 3 gradually increases, dirt is not easily accumulated at the filter holes 4 but is guided into the dirt accumulation tank 5. In this way, the problem that the drainage efficiency is affected due to the clogging of the filter screen by dirt is avoided.

[0058] The utility model is not limited to the above optional implementation manners. On the premise of not conflicting with each other, the various schemes can be combined arbitrarily; anyone can obtain other various forms of products under the inspiration of the utility model. However, no matter what changes are made in its shape or structure, as long as the technical scheme falls within the scope defined by the claims of the utility model, it falls within the protection scope of the utility model.

Claims

1. A manhole cover device for a self-cleaning municipal rainwater well, characterized in that: It includes a cover plate, and rain holes for rainwater to pass through are provided on the cover plate; A filter is provided below the cover plate. The filter includes an upper end close to the cover plate and a lower end opposite to the upper end. The cross-sectional area of the filter gradually increases from the upper end to the lower end, and filtering holes are evenly distributed on the filter; A dirt accumulation groove is also provided below the cover plate. Drainage holes are evenly distributed on the dirt accumulation groove. The dirt accumulation groove surrounds the filter, and the filter is fixed to the cover plate through the dirt accumulation groove; The rainwater entering through the rain holes is output after being filtered by the filter, and the dirt filtered out by the filter enters the dirt accumulation groove along the side wall of the filter under the action of gravity and the impact force of rainwater.

2. The manhole cover device of a self-cleaning municipal rainwater well according to claim 1, characterized in that: A guide for guiding rainwater is also provided between the filter and the cover plate. The guide guides the rainwater entering through the rain holes to the middle of the filter.

3. The manhole cover device of a self-cleaning municipal rainwater well according to claim 2, characterized in that: The guide is in a ring shape and is fixed to the cover plate by screws.

4. The manhole cover device of a self-cleaning municipal rainwater well according to claim 3, characterized in that: The guide includes a guide ring for guiding rainwater and a fixing ring for fixing the guide ring to the cover plate. The fixing ring and the guide ring are of an integral structure.

5. The manhole cover device of a self-cleaning municipal rainwater well according to claim 4, wherein: An arc-shaped guiding surface is provided on the guide ring. The rainwater entering through the rain holes enters the middle of the filter through the arc-shaped guiding surface, and the fixing ring and the cover plate are in surface contact.

6. The manhole cover device of a self-cleaning municipal rainwater well according to claim 1, characterized in that: A slot for inserting the filter is provided on the dirt accumulation groove, and the lower end of the filter is inserted into the dirt accumulation groove.

7. The manhole cover device of a self-cleaning municipal rainwater well according to claim 6, characterized in that: The dirt accumulation groove includes an inner ring body and an outer ring body. The inner ring body and the outer ring body are connected by an annular bottom wall, and the drainage holes are provided on the inner ring body, the outer ring body and the annular bottom wall.

8. The manhole cover device of a self-cleaning municipal rainwater well according to claim 7, characterized in that: The slot is provided on the inner ring body. An inclined surface that is beneficial for the dirt on the filter to enter the dirt accumulation groove is provided on the inner ring body, and the inclined surface is tangent to the outer wall of the filter.

9. The manhole cover device of a self-cleaning municipal rainwater well according to claim 1, characterized in that: The shape of the filter is hemispherical; or the shape of the filter is pyramid-shaped; or the shape of the filter is conical.

10. The manhole cover device of a self-cleaning municipal rainwater well according to claim 1, characterized in that: The dirt accumulation groove is fixed to the cover plate by pins. A fixing ring is provided on the cover plate. The upper end of the dirt accumulation groove is inserted into the fixing ring, and pin holes for cooperating with the pins are provided on the side wall of the fixing ring and the side wall of the dirt accumulation groove.

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