CN221052803U - Automatic drainage and anti-backflow well lid - Google Patents
Automatic drainage and anti-backflow well lid Download PDFInfo
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- CN221052803U CN221052803U CN202322888980.0U CN202322888980U CN221052803U CN 221052803 U CN221052803 U CN 221052803U CN 202322888980 U CN202322888980 U CN 202322888980U CN 221052803 U CN221052803 U CN 221052803U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 54
- 230000002265 prevention Effects 0.000 claims description 8
- 230000000694 effects Effects 0.000 abstract description 10
- 239000012535 impurity Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000009191 jumping Effects 0.000 description 3
- 230000005587 bubbling Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- -1 leaves Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
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Abstract
The utility model discloses a well lid capable of automatically draining water and preventing backflow, which comprises: the mounting seat, the first cover plate, the second cover plate and the third cover plate are embedded in the mounting seat and are in sliding connection with the mounting seat, the second cover plate is positioned in the mounting seat and is in sliding connection with the mounting seat, the third cover plate is positioned in the mounting seat and is fixedly connected with the mounting seat, and the second cover plate is arranged on the third cover plate in a sliding manner; wherein: when the first cover plate is attached to the second cover plate, the automatic water draining and backflow preventing well cover is in a closed state, and when the first cover plate is not attached to the second cover plate, the automatic water draining and backflow preventing well cover is in an open state. According to the utility model, when drainage is needed, the second cover plate moves downwards, the whole well cover is in an open state, accumulated water on a road surface is drained, and when the accumulated water is drained, the second cover plate moves upwards, the whole well cover is in a closed state, so that the automatic drainage of the accumulated water can be realized, and the drainage effect and drainage efficiency of the whole well cover are improved.
Description
Technical Field
The utility model relates to the technical field of well covers, in particular to an automatic water drainage and backflow prevention well cover.
Background
The well cover is an important component of the construction of a drainage engineering pipe network, and the performance of the well cover is directly related to road traffic safety and clean regional environment. The existing well lid is mainly divided into two types:
1. The common well cover has no drainage function, when short-time heavy rainfall occurs, the water pressure in the well cover is increased rapidly due to rapid increase of the rainwater in the pipe network system, so that the phenomena of air bubbling, jumping and the like occur under the action of strong water pressure, and when serious, the well cover is flushed away by strong water flow;
2. The well lid (rain grate) with the drain hole can drain accumulated water of the road surface into the pipe network system so as to realize the drainage of the accumulated water of the road surface, when short-time heavy rainfall occurs, the rainwater in the pipe network system cannot be timely drained, the rainwater can reversely flow into the road surface through the well lid, backflow occurs, the accumulated water of the road surface cannot be timely drained, the accumulated water amount of the road surface can be increased, and local waterlogging is formed;
So, when the heavy rainfall takes place for a short time, the quick discharge of rainwater can not be realized to these two kinds of well covers, and the discharge effect of rainwater is poor, discharge efficiency is low.
Disclosure of utility model
The utility model aims to solve the technical problems that: in order to solve the technical problems of poor drainage effect and low drainage efficiency of the existing well lid, the utility model provides an automatic drainage and backflow-preventing well lid.
The technical scheme adopted for solving the technical problems is as follows: an automatic drainage and anti-backflow well lid, comprising: the mounting seat, the first cover plate, the second cover plate and the third cover plate, wherein the first cover plate is embedded in the mounting seat and is in sliding connection with the mounting seat, the second cover plate is positioned in the mounting seat and is in sliding connection with the mounting seat, the third cover plate is positioned in the mounting seat and is fixedly connected with the mounting seat, and the second cover plate is slidably mounted on the third cover plate; wherein: the third cover plate is located below the second cover plate, the second cover plate is located below the first cover plate, when the first cover plate is attached to the second cover plate, the automatic water draining and backflow preventing well cover is in a closed state, and when the first cover plate is not attached to the second cover plate, the automatic water draining and backflow preventing well cover is in an open state.
From this, when needs drainage, the second apron downwardly moving, whole well lid is in open condition, drain ponding on the road surface, after the ponding is discharged, the second apron upwards moves, whole well lid is in closed condition, can realize the automatic discharge of ponding, the drainage effect and the drainage efficiency of whole well lid have been improved, when the inside ponding volume of pipe network system is too much can't in time be discharged, these ponding can promote the second apron and upwards move, switch the well lid from open condition to closed condition, in order to ensure that the inside ponding of pipe network system can not be through the reverse discharge of well lid to the road surface on, when avoiding taking place to flow backward, can also avoid phenomenon such as first apron emergence gas, jump, the life of whole well lid has been improved, and the driving safety of road is ensured.
Further, a connecting rod is arranged on one side, close to the second cover plate, of the third cover plate, and penetrates through the second cover plate and is in sliding connection with the second cover plate.
Further, a spring is sleeved on the outer side of the connecting rod, and two ends of the spring are respectively connected with the second cover plate and the third cover plate. Therefore, under the action of the spring, the second cover plate can move up and down, and then the whole well cover can be switched between the open state and the closed state.
Further, the second cover plate is provided with a through hole, and the connecting rod penetrates through the through hole and is in sliding connection with the second cover plate.
Further, the connecting rod includes: the connecting part, sliding part and spacing portion, the one end of connecting part with the third apron is connected, the both ends of sliding part with the other end of connecting part the spacing portion is connected. From this, can carry out spacingly through connecting portion and spacing portion to the travel distance of second apron, on the one hand, ensure that the second apron can not laminate mutually with the third apron, and the second apron is in the state of switching on all the time with the third apron, on the other hand, the second apron can not promote first apron and upwards move for first apron laminates mutually with the mount pad all the time, and then can place first apron.
Further, the connecting portion is located below the second cover plate, the limiting portion is located above the second cover plate, and the sliding portion penetrates through the through hole and is connected with the second cover plate.
Further, the diameter of the through hole is D1, the diameter of the connecting part is D2, the diameter of the sliding part is D3, and the diameter of the limiting part is D4; wherein: d1 < D2, d1=d3, D1 < D4. Therefore, the connection part can be ensured to limit the downward movement of the second cover plate, and the limiting part can be ensured to limit the upward movement of the second cover plate.
Further, the thickness of the second cover plate is L1, and the length of the sliding part is L2; wherein: l1 is less than L2. Thereby, a sufficient movement range of the second cover plate can be ensured.
Further, a first drain hole is formed in the first cover plate, a filter screen is arranged in the first drain hole, a limit groove is formed in one side, close to the second cover plate, of the first cover plate, a second drain hole is formed in the second cover plate, and a third drain hole is formed in the third cover plate; wherein: the first drain holes and the second drain holes are staggered, and the limiting part is embedded in the limiting groove. Thus, accumulated water on the road surface sequentially passes through the first drain hole, the second drain hole and the third drain hole and finally flows into the pipe network system to be discharged; the design that the first drain hole and the second drain hole are staggered can ensure that the first drain hole and the second drain hole cannot be communicated when the first cover plate is attached to the second cover plate, namely the whole well lid is in a closed state; the filter screen can separate impurities such as leaves, sand and stone in the road surface ponding to ensure that the impurities can not flow into the pipe network system, avoid the impurities to flow into the pipe network system, and cause the pipe network system to be blocked.
Further, the mounting seat is provided with a first mounting groove and a second mounting groove, the first mounting groove is communicated with the second mounting groove, the first cover plate is embedded in the first mounting groove, the second cover plate and the third cover plate are positioned in the second mounting groove, the diameter of the first mounting groove is D5, the diameter of the second mounting groove is D6, the diameter of the first cover plate is D7, the diameter of the second cover plate is D8, and the diameter of the third cover plate is D9; wherein: d5 =d7, d6=d8=d9, D5 > D6. Therefore, the first cover plate can be ensured to be placed on the mounting seat, and the second cover plate can move up and down relative to the mounting seat.
Compared with the prior art, the utility model has the beneficial effects that:
When needs drainage, the second apron downwardly moving, whole well lid is in open condition, discharge ponding on the road surface, after the ponding is discharged, the second apron upwards moves, whole well lid is in closed condition, can realize the automatic discharge of ponding, the drainage effect and the drainage efficiency of whole well lid have been improved, when the inside ponding volume of pipe network system is too much can't in time be discharged, these ponding can promote the second apron and upwards move, switch the well lid from open condition to closed condition, in order to ensure that the inside ponding of pipe network system can not be through the reverse discharge of well lid to the road surface on, when avoiding taking place to flow backward, can also avoid phenomenon such as first apron emergence gas, jump, the life of whole well lid has been improved, and ensure the driving safety of road.
Drawings
The utility model will be further described with reference to the drawings and examples.
FIG. 1 is a schematic view of the structure of an automatic drainage and anti-backflow well lid of the present utility model;
FIG. 2 is an effect diagram of the automatic drainage and anti-backflow well lid closing state of the present utility model;
FIG. 3 is an effect diagram of the opened state of the automatic drainage and anti-backflow well lid according to the present utility model;
FIG. 4 is a diagram showing the effect of the automatic drainage and anti-backflow well lid installation of the present utility model;
FIG. 5 is a schematic cross-sectional view of a mounting base of the present utility model;
FIG. 6 is a schematic view of the structure of the first cover plate of the present utility model;
FIG. 7 is a schematic view of the structure of the second cover plate of the present utility model;
FIG. 8 is a schematic structural view of a third cover plate according to the present utility model
Fig. 9 is a schematic cross-sectional structure of the connecting rod of the present utility model.
In the figure: 1. a mounting base; 101. a first mounting groove; 102. a second mounting groove; 2. a first cover plate; 201. a first drain hole; 202. a filter screen; 203. a limit groove; 3. a second cover plate; 301. a through hole; 302. a second drain hole; 4. a third cover plate; 401. a connecting rod; 4011. a connection part; 4012. a sliding part; 4013. a limit part; 402. a spring; 403. a third drain hole; 5. a well wall; 100. and a well cover capable of automatically draining water and preventing backflow.
Detailed Description
The utility model will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the utility model and therefore show only the structures which are relevant to the utility model.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1 to 9, a well lid 100 for automatic drainage and backflow prevention according to the preferred embodiment of the present utility model comprises: the mounting seat 1, the first cover plate 2, the second cover plate 3 and the third cover plate 4, wherein the first cover plate 2 is embedded in the mounting seat 1 and is in sliding connection with the mounting seat 1, the second cover plate 3 is positioned in the mounting seat 1 and is in sliding connection with the mounting seat 1, the third cover plate 4 is positioned in the mounting seat 1 and is fixedly connected with the mounting seat 1, and the second cover plate 3 is arranged on the third cover plate 4 in a sliding manner; wherein: the third cover plate 4 is located below the second cover plate 3, the second cover plate 3 is located below the first cover plate 2, when the first cover plate 2 is attached to the second cover plate 3, the automatic water draining and backflow preventing well lid 100 is in a closed state, and when the first cover plate 2 is not attached to the second cover plate 3, the automatic water draining and backflow preventing well lid 100 is in an open state. From this, when needs drainage, second apron 3 downwardly moving, whole well lid is in open condition, drain the ponding on the road surface, after the ponding is discharged, second apron 3 upwards moves, whole well lid is in closed condition, can realize the automatic discharge of ponding, the drainage effect and the drainage efficiency of whole well lid have been improved, when the too much unable timely discharge of ponding volume of pipe network system inside, these ponding can promote second apron 3 upwards to remove, switch the well lid from open condition to closed condition, in order to ensure that the inside ponding of pipe network system can not be through the reverse discharge of well lid to the road surface on, when avoiding taking place to flow backward, can also avoid phenomenon such as first apron 2 to take place and take place gas, jump, the life of whole well lid has been improved, and the driving safety of road is ensured.
In other words, when the amount of accumulated water in the pipe network system is too much and can not be discharged in time, the accumulated water in the pipe network system can surge upwards, meanwhile, the accumulated water on the road surface can flow downwards, when the accumulated water in the pipe network system which surges upwards applies upward thrust to the second cover plate 3 and downward thrust to the second cover plate 3 is larger than the accumulated water on the road surface, the second cover plate 3 gradually moves upwards, finally the second cover plate 3 is attached to the first cover plate 2, the whole well cover is switched to a closed state from an open state, at the moment, the accumulated water on the road surface and the accumulated water in the pipe network system can not flow mutually, the whole well cover can not flow backwards, meanwhile, phenomena of air bleeding, jumping and the like can not occur in the first cover plate 2, after a period of time, the accumulated water in the pipe network system is gradually discharged, at the moment, the accumulated water which surges upwards applies upward thrust to the second cover plate 3 is smaller than the accumulated water on the road surface and downward thrust to the second cover plate 3, the second cover plate 3 gradually moves upwards, the whole well cover plate is switched to the open state from the closed state, and the whole well cover is completely restarted to the drainage function, and the accumulated water on the road surface can be discharged through the well cover.
In this embodiment, a connecting rod 401 is disposed on one side of the third cover plate 4 near the second cover plate 3, the connecting rod 401 penetrates through the second cover plate 3 and is slidably connected with the second cover plate 3, a spring 402 is sleeved on the outer side of the connecting rod 401, two ends of the spring 402 are connected with the second cover plate 3 and the third cover plate 4 respectively, a through hole 301 is formed in the second cover plate 3, the connecting rod 401 penetrates through the through hole 301 and is slidably connected with the second cover plate 3, and the connecting rod 401 includes: the connecting portion 4011, the sliding portion 4012 and the limiting portion 4013, one end of the connecting portion 4011 is connected with the third cover plate 4, two ends of the sliding portion 4012 are connected with the other end of the connecting portion 4011 and the limiting portion 4013, the connecting portion 4011 is located below the second cover plate 3, the limiting portion 4013 is located above the second cover plate 3, and the sliding portion 4012 penetrates through the through hole 301 and is connected with the second cover plate 3. Therefore, under the action of the spring 402, the second cover plate 3 can move up and down, and then the whole well cover can be switched between an open state and a closed state; the moving distance of the second cover plate 3 can be limited through the connecting portion 4011 and the limiting portion 4013, on one hand, the second cover plate 3 is guaranteed not to be attached to the third cover plate 4, the second cover plate 3 and the third cover plate 4 are always in a conducting state, on the other hand, the second cover plate 3 cannot push the first cover plate 2 to move upwards, the first cover plate 2 is enabled to be attached to the mounting seat 1 all the time, and then the first cover plate 2 can be placed.
In the present embodiment, the diameter of the through hole 301 is D1, the diameter of the connection portion 4011 is D2, the diameter of the sliding portion 4012 is D3, the diameter of the limiting portion 4013 is D4, the thickness of the second cover plate 3 is L1, and the length of the sliding portion 4012 is L2; wherein: d1 < D2, d1=d3, D1 < D4, L1 < L2. Thereby, it can be ensured that the connection portion 4011 limits the downward movement of the second cover plate 3, and the limit portion 4013 limits the upward movement of the second cover plate 3; a sufficient range of movement of the second cover plate 3 can be ensured.
In this embodiment, the first cover plate 2 is provided with a first drain hole 201, a filter screen 202 is installed in the first drain hole 201, a limit groove 203 is formed on one side of the first cover plate 2 close to the second cover plate 3, the second cover plate 3 is also provided with a second drain hole 302, and the third cover plate 4 is provided with a third drain hole 403; wherein: the first drain hole 201 and the second drain hole 302 are staggered, and the limit portion 4013 is embedded in the limit groove 203. Thus, accumulated water on the road surface sequentially passes through the first drain hole 201, the second drain hole 302 and the third drain hole 403, and finally flows into the pipe network system to be discharged; the design that the first drain hole 201 and the second drain hole 302 are staggered can ensure that the first drain hole 201 and the second drain hole 302 cannot be communicated when the first cover plate 2 and the second cover plate 3 are attached, namely, the whole well lid is in a closed state; the filter screen 202 can separate impurities such as leaves, sand and stones in the surface water to ensure that the impurities cannot flow into the pipe network system, and prevent the impurities from flowing into the pipe network system, so that the pipe network system is blocked.
In other words, when the first cover plate 2 is attached to the second cover plate 3, the first drain hole 201 is not communicated with the second drain hole 302, and at this time, the whole well lid is in a closed state, i.e. accumulated water on the road surface cannot be drained, and when the first cover plate 2 is not attached to the second cover plate 3, the first drain hole 201 is communicated with the second drain hole 302, and at this time, the whole well lid is in an open state, i.e. accumulated water on the road surface can be drained.
In this embodiment, the mounting seat 1 is provided with a first mounting groove 101 and a second mounting groove 102, the first mounting groove 101 is communicated with the second mounting groove 102, the first cover plate 2 is embedded in the first mounting groove 101, the second cover plate 3 and the third cover plate 4 are positioned in the second mounting groove 102, the diameter of the first mounting groove 101 is D5, the diameter of the second mounting groove 102 is D6, the diameter of the first cover plate 2 is D7, the diameter of the second cover plate 3 is D8, and the diameter of the third cover plate 4 is D9; wherein: d5 =d7, d6=d8=d9, D5 > D6. This ensures that the first cover plate 2 is placed on the mount 1 and the second cover plate 3 can move up and down relative to the mount 1.
The well lid 100 for automatic drainage and anti-backflow is locked on the well wall 5 through screws so as to realize the fixed installation of the well lid 100 for automatic drainage and anti-backflow.
In the initial state, the upward thrust of the spring 402 on the second cover plate 3 is larger than the downward pressure on the second cover plate 3, the second cover plate 3 is attached to the first cover plate 2, and the whole manhole cover is in the closed state.
When drainage is needed, the downward thrust of the second cover plate 3 received by the spring 402 is smaller than the downward pressure received by the second cover plate 3 under the action of accumulated water on the road surface, the second cover plate 3 moves downwards, the second cover plate 3 is not attached to the first cover plate 2, the whole well cover is in an open state, and the accumulated water on the road surface can flow into the pipe network system through the first drain hole 201, the second drain hole 302 and the third drain hole 403, so that the automatic drainage function of the whole well cover is realized.
When the accumulated water in the pipe network system is excessive and can not be discharged in time, the second cover plate 3 is pushed to move upwards when being pushed by the pipe network system upwards to surge the accumulated water, and the second cover plate 3 is pushed to move downwards when being subjected to downward pressure of the accumulated water on the road surface by the second cover plate 3, so that the second cover plate 3 is finally attached to the first cover plate 2, the whole well cover is switched to a closed state from an open state, at the moment, the accumulated water on the road surface and the accumulated water in the pipe network system can not flow mutually, namely, the anti-backflow function of the whole well cover is realized, after a period of time, the accumulated water in the pipe network system is gradually discharged, at the moment, the second cover plate 3 is pushed to move downwards by the accumulated water on the road surface when being pushed by the pipe network system upwards to be smaller than the downward pressure of the accumulated water on the road surface by the second cover plate 3, the whole well cover plate is switched to the open state from the closed state, and the accumulated water on the road surface can be discharged through the pipe network system again.
In summary, according to the utility model, when drainage is needed, the second cover plate 3 moves downwards, the whole well cover is in an open state, accumulated water on the road surface is discharged, after the accumulated water is discharged, the second cover plate 3 moves upwards, the whole well cover is in a closed state, the automatic discharge of the accumulated water can be realized, the drainage effect and drainage efficiency of the whole well cover are improved, when the accumulated water in the pipe network system is too much and can not be timely discharged, the accumulated water can push the second cover plate 3 to move upwards, the well cover is switched from the open state to the closed state, so that the accumulated water in the pipe network system can not be reversely discharged to the road surface through the well cover, the phenomena of bubbling, jumping and the like of the first cover plate 2 can be avoided while the backflow is avoided, the service life of the whole well cover is prolonged, and the driving safety of the road is ensured.
The above-described preferred embodiments according to the present utility model are intended to suggest that, from the above description, various changes and modifications can be made by the worker in question without departing from the technical spirit of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined as the scope of the claims.
Claims (10)
1. Automatic drainage and prevent well lid of backward flowing, its characterized in that includes:
Mounting base (1), and
The first cover plate (2) is embedded in the mounting seat (1) and is in sliding connection with the mounting seat (1);
The second cover plate (3) is positioned in the mounting seat (1) and is in sliding connection with the mounting seat (1);
The third cover plate (4) is positioned in the mounting seat (1) and fixedly connected with the mounting seat (1), and the second cover plate (3) is slidably mounted on the third cover plate (4);
Wherein: the third cover plate (4) is located below the second cover plate (3), the second cover plate (3) is located below the first cover plate (2), when the first cover plate (2) is attached to the second cover plate (3), the automatic water draining and backflow preventing well cover (100) is in a closed state, and when the first cover plate (2) is not attached to the second cover plate (3), the automatic water draining and backflow preventing well cover (100) is in an open state.
2. The automatic drainage and backflow prevention well cover according to claim 1, wherein a connecting rod (401) is arranged on one side, close to the second cover plate (3), of the third cover plate (4), and the connecting rod (401) penetrates through the second cover plate (3) and is in sliding connection with the second cover plate (3).
3. The automatic water draining and backflow preventing well lid according to claim 2, wherein a spring (402) is sleeved on the outer side of the connecting rod (401), and two ends of the spring (402) are respectively connected with the second cover plate (3) and the third cover plate (4).
4. The automatic drainage and backflow prevention well cover according to claim 3, wherein the second cover plate (3) is provided with a through hole (301), and the connecting rod (401) penetrates through the through hole (301) and is in sliding connection with the second cover plate (3).
5. The automatic drainage and anti-backflow well cover according to claim 4, characterized in that said connecting rod (401) comprises: the sliding device comprises a connecting part (4011), a sliding part (4012) and a limiting part (4013), wherein one end of the connecting part (4011) is connected with the third cover plate (4), and two ends of the sliding part (4012) are connected with the other end of the connecting part (4011) and the limiting part (4013).
6. The automatic drainage and backflow prevention well cover according to claim 5, wherein the connecting portion (4011) is located below the second cover plate (3), the limiting portion (4013) is located above the second cover plate (3), and the sliding portion (4012) penetrates through the through hole (301) and is connected with the second cover plate (3).
7. The automatic drainage and backflow prevention manhole cover according to claim 5, wherein the diameter of the through hole (301) is D1, the diameter of the connecting portion (4011) is D2, the diameter of the sliding portion (4012) is D3, and the diameter of the limiting portion (4013) is D4; wherein: d1 < D2, d1=d3, D1 < D4.
8. The automatic drainage and anti-backflow well cover according to claim 5, characterized in that the thickness of the second cover plate (3) is L1, and the length of the sliding part (4012) is L2; wherein: l1 is less than L2.
9. The automatic drainage and backflow prevention well cover according to claim 5, wherein the first cover plate (2) is provided with a first drainage hole (201), a filter screen (202) is installed in the first drainage hole (201), a limit groove (203) is formed in one side, close to the second cover plate (3), of the first cover plate (2), the second cover plate (3) is further provided with a second drainage hole (302), and the third cover plate (4) is provided with a third drainage hole (403); wherein: the first drain hole (201) and the second drain hole (302) are staggered, and the limiting part (4013) is embedded in the limiting groove (203).
10. The automatic drainage and backflow prevention well cover according to claim 1, wherein the mounting seat (1) is provided with a first mounting groove (101) and a second mounting groove (102), the first mounting groove (101) is communicated with the second mounting groove (102), the first cover plate (2) is embedded in the first mounting groove (101), the second cover plate (3) and the third cover plate (4) are positioned in the second mounting groove (102), the diameter of the first mounting groove (101) is D5, the diameter of the second mounting groove (102) is D6, the diameter of the first cover plate (2) is D7, the diameter of the second cover plate (3) is D8, and the diameter of the third cover plate (4) is D9; wherein: d5 =d7, d6=d8=d9, D5 > D6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322888980.0U CN221052803U (en) | 2023-10-26 | 2023-10-26 | Automatic drainage and anti-backflow well lid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322888980.0U CN221052803U (en) | 2023-10-26 | 2023-10-26 | Automatic drainage and anti-backflow well lid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221052803U true CN221052803U (en) | 2024-05-31 |
Family
ID=91198987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322888980.0U Active CN221052803U (en) | 2023-10-26 | 2023-10-26 | Automatic drainage and anti-backflow well lid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221052803U (en) |
-
2023
- 2023-10-26 CN CN202322888980.0U patent/CN221052803U/en active Active
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