Inspection well cover with displacement adjusting function

Abstract

The utility model relates to an inspection well cover with a displacement adjusting function. The technical problem to be solved by the utility model is to provide the inspection well cover with the displacement adjusting function. According to the technical scheme, the inspection well cover comprises an inspection well cover base and an inspection well cover plate assembly, the inspection well cover plate assembly comprises an upper cover plate, an adjusting block, a lower cover plate, a steel ball, a pre-tightening spring and a reset spring, and the upper cover plate comprises an upper cover plate body and an upper cover plate swing part; the upper cover plate body is provided with a pressure measuring hole and upper cover plate water inlet holes arranged in an array mode, the adjusting block comprises a square adjusting block, and the square adjusting block is provided with adjusting block water through holes arranged in an array mode. The utility model has the advantages that the displacement of the cover plate of the inspection well cover is automatically controlled through the movement of the square adjusting block, the real-time automatic adjustment is realized, the flexibility is higher, and the practicability is stronger.

Description

Technical Field

[0001] This utility model relates to a manhole cover with drainage volume adjustment function. Background Technology

[0002] Manhole covers are sealed devices that cover the top of inspection wells for underground pipelines (such as drainage, power, and communication lines) in cities. In drainage systems, they guide surface water into the underground pipe network through pre-set holes or gaps to prevent flooding. Traditional manhole covers achieve their drainage capacity through a fixed aperture design, which cannot be dynamically adjusted according to actual needs. Fixed drainage outlets are prone to overload due to excessive instantaneous water volume, leading to road surface water accumulation or even flooding. Furthermore, the fixed apertures are easily blocked by leaves, garbage, and other debris, requiring frequent manual cleaning, resulting in poor drainage flexibility. This paper proposes improvements and optimizations to address these issues. Utility Model Content

[0003] To solve the above problems, the technical problem to be solved by this utility model is to provide a manhole cover with drainage volume adjustment function.

[0004] The technical solution adopted by this utility model of a manhole cover with drainage adjustment function is as follows: It includes a manhole cover base and a manhole cover plate assembly. The manhole cover plate assembly comprises an upper cover plate, an adjusting block, a lower cover plate, a steel ball, a pre-tensioning spring, and a return spring. The upper cover plate includes an upper cover plate body and an upper cover plate swinging part. The upper cover plate body is provided with a pressure measuring hole and an array of upper cover plate water inlets. The adjusting block includes a square adjusting block with an array of adjusting block water passage holes. The lower cover plate includes a lower cover plate body fixed to the bottom of the upper cover plate body and a spring seat located at the bottom of the lower cover plate body. The spring seat has a spring seat receiving cavity corresponding to the pressure measuring hole. The front of the lower cover plate body is provided with a spring for... The lower cover plate has a travel groove for limiting the lateral movement of the square adjusting block. The lower cover plate has drainage holes arranged in an array within the travel groove. A drive hole perpendicularly communicating with the spring seat receiving cavity is provided on the left side wall of the lower cover plate travel groove. The preload spring is placed inside the spring seat receiving cavity. The steel ball abuts against the upper end of the preload spring. One end of the reset spring abuts against the right side of the square adjusting block, and the other end abuts against the right side wall of the lower cover plate travel groove. The upper cover plate water inlet, the adjusting block water passage, and the lower cover plate drainage hole all have the same diameter. The lower cover plate drainage hole is located directly below the upper cover plate water inlet. The adjusting block water passage and the upper cover plate water inlet are staggered.

[0005] The diameter of the spring seat receiving cavity is larger than the diameter of the pressure measuring hole, and the diameters of the pressure measuring hole and the driving hole are the same.

[0006] The square adjusting block also includes an adjusting block pusher disposed on the left side of the square adjusting block, and the adjusting block pusher is placed inside the driving hole.

[0007] The square adjusting block has a spring limiting groove on its right side for limiting the movement of the reset spring. One end of the reset spring is placed in the spring limiting groove and the other end abuts against the right side wall of the travel groove of the lower cover plate. There are two reset springs and two spring limiting grooves.

[0008] An upper cover positioning groove is formed between the swing portion of the upper cover plate and the bottom of the upper cover plate body for the installation and positioning of the lower cover plate body.

[0009] The manhole cover base includes a base receiving part, which has a main through hole communicating with the drainage hole of the lower cover plate. The base receiving part has an inner perimeter at the main through hole, and a base swinging part is formed on the inner perimeter. The swinging part has a swinging part limiting port that mates with the swinging part of the upper cover plate. The inner wall of the inner perimeter is provided with an inner baffle for limiting the manhole cover plate assembly when it is received. The swinging part of the upper cover plate is swayably connected to the swinging part of the base by bolts.

[0010] The advantages of this utility model of a manhole cover with drainage volume adjustment function are as follows: the drainage volume of the manhole cover is automatically controlled by the movement of the square adjustment block. During heavy rain, it can quickly absorb surface water and reduce the risk of waterlogging. When the water pressure decreases, the reset spring drives the adjustment block to reset and restore the low-flow drainage mode, avoiding overloading of the pipe network. It achieves real-time automatic adjustment, which is more flexible and more practical. Attached Figure Description

[0011] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0012] Figure 1 This is a schematic diagram of the structure of the manhole cover with drainage volume adjustment function according to this utility model;

[0013] Figure 2 This is an exploded view of the manhole cover with drainage volume adjustment function of this utility model;

[0014] Figure 3 This is a structural schematic diagram of the top cover plate of this utility model;

[0015] Figure 4 This is a schematic diagram of the structure of the adjusting block of this utility model;

[0016] Figure 5 This is a front structural diagram of the lower cover plate of this utility model;

[0017] Figure 6 This is a schematic diagram of the back structure of the lower cover plate of this utility model;

[0018] Figure 7 This is a structural schematic diagram of the manhole cover base of this utility model. Detailed Implementation

[0019] like Figure 1-7 As shown, the manhole cover with drainage volume adjustment function involved in this utility model includes a manhole cover base 1 and a manhole cover plate assembly 2. The manhole cover plate assembly 2 includes an upper cover plate 5, an adjusting block 4, a lower cover plate 3, a steel ball 6, a pre-tensioning spring 7, and a return spring 8. The upper cover plate 5 includes an upper cover plate body 10 and an upper cover plate swinging part 11. The upper cover plate body 10 is provided with a pressure measuring hole 12 and an array of upper cover plate water inlet holes 13. The adjusting block 4 includes a square adjusting block 15. The upper cover 10 has an array of adjustable block water passage holes 17. The lower cover 3 includes a lower cover body 20 fixed to the bottom of the upper cover body 10 and a spring seat 21 located at the bottom of the lower cover body 20. The spring seat 21 has a spring seat receiving cavity 22 that is connected to the pressure measuring hole 12. The front of the lower cover body 20 has a lower cover travel groove 23 for limiting the lateral movement of the square adjustable block 15. The lower cover travel groove 23 has an array of lower cover drain holes 2. 4. The left side wall of the lower cover plate travel groove 23 is provided with a driving hole 25 that is perpendicularly connected to the spring seat receiving cavity 22. The preload spring 7 is placed in the spring seat receiving cavity 22. The steel ball 6 abuts against the upper end of the preload spring 7. One end of the return spring 8 abuts against the right side of the square adjusting block 15 and the other end abuts against the right side wall of the lower cover plate travel groove 23. The water inlet hole 13 of the upper cover plate, the water passage hole 17 of the adjusting block, and the drain hole 24 of the lower cover plate are all the same diameter. The drain hole 24 of the lower cover plate is provided with... Directly below the water inlet hole 13 of the upper cover plate, the water passage hole 17 of the adjusting block is staggered with the water inlet hole 13 of the upper cover plate. The square adjusting block 15 is moved by the dual control of the steel ball 6 and the return spring 8. The movement of the square adjusting block 15 automatically controls the drainage volume of the manhole cover plate. During heavy rain, it can quickly absorb surface water and reduce the risk of waterlogging. When the water pressure decreases, the return spring 8 drives the adjusting block to reset and restore the low flow drainage mode, avoiding overloading of the pipe network. It realizes real-time automatic adjustment, which is more flexible and more practical.

[0020] The diameter of the spring seat receiving cavity 22 is larger than the diameter of the pressure measuring hole 12. The diameters of the pressure measuring hole 12 and the driving hole 25 are the same, which can effectively restrict the steel ball 6 and prevent it from running out of the pressure measuring hole 12 or the driving hole 25, thus ensuring the reliability of the operation.

[0021] The square adjusting block 15 also includes an adjusting block pusher 16 disposed on the left side of the square adjusting block 15. The adjusting block pusher 16 is placed inside the driving hole 25 to ensure that the water entering the driving hole 25 can accurately push the square adjusting block 15 to move, thereby improving the accuracy of the action.

[0022] The square adjusting block 15 has a spring limiting groove 18 on its right side for limiting the movement of the reset spring 8. One end of the reset spring 8 is placed in the spring limiting groove 18 and the other end abuts against the right side wall of the lower cover plate stroke groove 23. There are two reset springs 8 and two spring limiting grooves 18, making the movement of the square adjusting block 15 more stable and reliable.

[0023] The upper cover plate swinging part 11 and the bottom of the upper cover plate body 10 form an upper cover plate positioning groove 27 for the installation and positioning of the lower cover plate body 20. The docking and positioning are accurate, effectively preventing loosening or displacement and ensuring consistent swinging.

[0024] The manhole cover base 1 includes a base receiving part 30. The base receiving part 30 has a main through hole 31 that communicates with the drainage hole 24 of the lower cover plate. The base receiving part 30 has an inner perimeter 32 at the main through hole 31. A base swing part 33 is formed on the inner perimeter 32. The swing part 33 has a swing part limiting port 34 that connects with the swing part 11 of the upper cover plate. The inner wall of the inner perimeter 32 has an inner baffle 35 for limiting the manhole cover plate assembly 2 when receiving it. The swing part 11 of the upper cover plate is swayably connected to the swing part 33 of the base by bolts.

[0025] Drainage adjustment process: Initially, there is not much water outside the manhole cover, and the water entering the pressure testing hole 12 is insufficient to push the steel ball 6 downward. The pressure testing hole 12 and the driving hole 25 are in a closed state. In addition, under the action of the return spring 8, the left side of the square adjusting block 15 blocks the driving hole 25, and the adjusting block water passage hole 17 on the square adjusting block 15 is staggered with the upper cover plate water inlet hole 13 of the upper cover plate body 10. This prevents the water outside the manhole cover from passing smoothly through the lower cover plate drainage hole 24 of the lower cover plate 3 into the main through hole 31 of the base due to the obstruction of the square adjusting block 15. As the water outside the manhole cover increases, the water entering the pressure testing hole 12 becomes sufficient. The steel ball 6 is pushed downwards, connecting the pressure measuring hole 12 and the driving hole 25. The water continues to push the square adjusting block 15 to the right, causing the water passage hole 17 of the adjusting block and the water inlet hole 13 of the upper cover plate to gradually become fully connected. The water outside the manhole cover enters the main through hole 31 of the base through the water inlet hole 13 of the upper cover plate, the water passage hole 17 of the adjusting block, and the drainage hole 24 of the lower cover plate in sequence. When the water pressure outside the manhole cover is insufficient, the square adjusting block 15, under the action of the return spring 8, causes the water passage hole 17 of the adjusting block and the water inlet hole 13 of the upper cover plate to gradually become disconnected, realizing the function of automatically adjusting drainage according to the external water volume. It has high flexibility and good drainage effect.

[0026] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model are included within the protection scope of the present utility model.

Claims

1. A manhole cover with drainage volume adjustment function, comprising a manhole cover base (1) and a manhole cover plate assembly (2), characterized in that: The manhole cover assembly (2) includes an upper cover plate (5), an adjusting block (4), a lower cover plate (3), a steel ball (6), a pre-tightening spring (7), and a reset spring (8). The upper cover plate (5) includes an upper cover plate body (10) and an upper cover plate swinging part (11). The upper cover plate body (10) is provided with a pressure measuring hole (12) and an array of upper cover plate water inlets (13). The adjusting block (4) includes a square adjusting block (15). The square adjusting block (15) is provided with an array of adjusting block water passages (17). The lower cover plate (3) includes a lower cover plate body (20) fixed to the bottom of the upper cover plate body (10) and a spring seat (21) provided at the bottom of the lower cover plate body (20). The spring seat (21) is provided with a spring seat receiving cavity (22) that is connected to the pressure measuring hole (12). The front of the lower cover plate body (20) is provided with a square adjusting block for the adjusting block. The lower cover plate travel groove (23) of the segment (15) is laterally limited. The lower cover plate travel groove (23) is provided with an array of lower cover plate drainage holes (24). The left side wall of the lower cover plate travel groove (23) is provided with a drive hole (25) that is perpendicular to the spring seat receiving cavity (22). The preload spring (7) is placed in the spring seat receiving cavity (22). The steel ball (6) abuts against the upper end of the preload spring (7). One end of the reset spring (8) abuts against the right side of the square adjusting block (15) and the other end abuts against the right side wall of the lower cover plate travel groove (23). The upper cover plate water inlet hole (13), the adjusting block water passage hole (17) and the lower cover plate drainage hole (24) are all the same diameter. The lower cover plate drainage hole (24) is located directly below the upper cover plate water inlet hole (13). The adjusting block water passage hole (17) and the upper cover plate water inlet hole (13) are staggered.

2. The manhole cover with drainage volume adjustment function according to claim 1, characterized in that: The diameter of the spring seat receiving cavity (22) is larger than the diameter of the pressure measuring hole (12), and the diameters of the pressure measuring hole (12) and the driving hole (25) are the same.

3. The manhole cover with drainage volume adjustment function according to claim 1, characterized in that: The square adjustment block (15) also includes an adjustment block pusher (16) disposed on the left side of the square adjustment block (15), and the adjustment block pusher (16) is placed inside the drive hole (25).

4. The manhole cover with drainage volume adjustment function according to claim 1, characterized in that: The square adjusting block (15) has a spring limiting groove (18) on the right side for limiting the movement of the reset spring (8). One end of the reset spring (8) is placed in the spring limiting groove (18) and the other end abuts against the right side wall of the lower cover plate stroke groove (23). There are two reset springs (8) and two spring limiting grooves (18).

5. The manhole cover with drainage volume adjustment function according to claim 1, characterized in that: An upper cover positioning groove (27) for mounting and positioning the lower cover body (20) is formed between the swing part (11) of the upper cover and the bottom of the upper cover body (10).

6. The manhole cover with drainage volume adjustment function according to claim 1, characterized in that: The manhole cover base (1) includes a base receiving part (30), the base receiving part (30) is provided with a main through hole (31) communicating with the drainage hole (24) of the lower cover plate, the base receiving part (30) is provided with an inner perimeter (32) at the main through hole (31), a base swing part (33) is formed on the inner perimeter (32), the swing part (33) is provided with a swing part limiting port (34) that connects with the swing part (11) of the upper cover plate, the inner wall of the inner perimeter (32) is provided with an inner baffle (35) for limiting the manhole cover plate assembly (2) when receiving it, and the swing part (11) of the upper cover plate is swayably connected to the swing part (33) of the base by bolts.

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