Inspection well cover

Abstract

The utility model discloses an inspection well cover which comprises a circular well cover body and is characterized in that a plurality of quick discharge holes are formed in the middle of the well cover body in the circumferential direction of the well cover body, and a valve element assembly used for opening or closing the quick discharge holes is arranged on the inner side of the well cover body. The valve element assembly comprises a limiting cylinder fixed to the well lid body, a control rod and a valve element, wherein the two ends of the control rod are limited in a limiting hole in the bottom of the limiting cylinder and a center hole of the well lid body respectively, and the valve element is matched with the quick discharging hole in shape. The connecting rod is used for connecting the valve core with the control rod; and the spring is limited between the control rod and the inner end surface of the limiting barrel. The quick drainage device has the advantages that when water accumulated on a road is deep or precipitation is large, quick drainage can be achieved by opening the quick drainage hole, and the opening process is simple and easy to operate; the whole device is simple in structure, low in cost and easy to maintain.

Description

Technical Field

[0001] The utility model belongs to the technical field of municipal drainage devices, in particular to a manhole cover. Background Art

[0002] Traditional manholes are divided into two parts: a manhole cover and a manhole seat. When water accumulates on the road during the rainy season, in order to increase the drainage speed, road maintenance personnel often remove the manhole cover from the manhole seat and allow the accumulated water to flow directly into the manhole seat for drainage.

[0003] When there is a lot of water on the road, the manhole cover is not easy to open under the pressure of the water. Although the water can be quickly drained after opening, the manhole seat lacks the protection of the manhole cover, increasing the risk of pedestrians falling into the well. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide a manhole cover, on which a plurality of quick-drain holes for realizing rapid drainage are opened. The quick-drain holes can be opened by pressing and rotating a control rod to make the valve core leave the quick-drain holes, thereby realizing the purpose of rapid drainage when there is a lot of accumulated water or a large amount of precipitation.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a manhole cover, including a circular manhole cover body, the key is: a plurality of quick-discharge holes are arranged in the middle part of the manhole cover body and along the circumference of the manhole cover body, a valve core assembly for opening or closing the quick-discharge holes is arranged on the inner side of the manhole cover body, the valve core assembly includes a limiting cylinder fixed on the manhole cover body, a control rod with two ends respectively limited by the limiting holes at the bottom of the limiting cylinder and the center hole of the manhole cover body, a valve core matching the shape of the quick-discharge hole, a connecting rod connecting the valve core and the control rod, and a spring limited between the control rod and the inner end face of the limiting cylinder, an L-shaped limiting groove is arranged on the limiting cylinder, and the connecting rod is limited in the limiting groove.

[0006] Furthermore, a circular boss extending inward is provided at the center of the inner side of the manhole cover body, and a countersunk hole is provided at the center of the outer side. The depth of the countersunk hole is greater than the thickness of the manhole cover body, and the center hole is arranged on the circular boss.

[0007] Furthermore, the top end of the control rod passes through the central hole and is located in the counterbore.

[0008] Furthermore, a switch button is provided on the top of the control rod.

[0009] Furthermore, the top of the limiting cylinder is threadedly connected to the circular boss.

[0010] Furthermore, a water discharge hole is provided at the bottom of the limiting cylinder.

[0011] Furthermore, a connecting boss is provided on the control rod, and a mounting hole for mounting the connecting rod is provided on the connecting boss. One end of the connecting rod is located in the mounting hole, and the other end is connected to the valve core by means of bolts.

[0012] Furthermore, a drainage hole is provided on the manhole cover body.

[0013] Furthermore, the drainage holes are provided in a plurality along the radial direction of the manhole cover body and in a plurality of groups along the circumferential direction of the manhole cover body.

[0014] Furthermore, anti-slip convex strips are provided on the manhole cover body.

[0015] The beneficial effects of the utility model are as follows: when the water on the road is deep or the rainfall is heavy, rapid drainage can be achieved by opening the quick drainage hole, and the opening process is simple and easy to operate; the manhole cover has a simple structure, low cost and is easy to maintain.

[0016] The utility model is described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the manhole cover of the utility model;

[0018] Figure 2 It is a schematic diagram of the bottom structure of the manhole cover of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the manhole cover body in the utility model manhole cover;

[0020] Figure 4 It is a structural schematic diagram of a control rod in a manhole cover of the utility model;

[0021] Figure 5 The utility model is a schematic diagram of the structure of a limit cylinder in a manhole cover.

[0022] In the attached drawings, 1. manhole cover body, 1-1. quick drain hole, 1-2. center hole, 1-3. circular boss, 1-4. countersunk hole, 1-5. drain hole, 1-6. anti-slip convex strip, 2. limit cylinder, 2-1. limit groove, 2-2. limit hole, 2-3. drain hole, 3. valve core, 4. control rod, 4-1. connecting boss, 4-2. mounting hole, 5. connecting rod, 6. spring, 7. switch button. DETAILED DESCRIPTION

[0023] See attached Figure 1-5The utility model provides a manhole cover, comprising a circular manhole cover body 1, a plurality of quick-drain holes 1-1 for quick drainage arranged in the middle of the manhole cover body 1 and arranged along the circumference of the manhole cover body 1, and a valve core assembly arranged on the inner side of the manhole cover body 1 and used to open or close the quick-drain holes 1-1. The valve core assembly comprises a limiting cylinder 2 fixed on the manhole cover body 1, a control rod 4 whose two ends are respectively limited by the limiting hole 2-2 at the bottom of the limiting cylinder 2 and the center hole 1-2 on the manhole cover body 1, a valve core 3 matching the shape of the quick-drain hole 1-1, an L-shaped connecting rod 5 connecting the valve core 3 and the control rod 4, and a spring 6 limited between the control rod 4 and the inner end surface of the limiting cylinder 2, an L-shaped limiting groove 2-1 is provided on the limiting cylinder 2, and the connecting rod 5 is limited in the limiting groove 2-1.

[0024] In this embodiment, three quick-discharge holes 1-1 are arranged along the circumference of the manhole cover body 1. When the quick-discharge hole 1-1 needs to be opened, the top of the control rod 4 is pressed to make the valve core 3 completely detach from the quick-discharge hole 1-1. At this time, the connecting rod 5 moves downward from the vertical groove of the limiting groove 2-1 to the turning point of the vertical groove and the horizontal groove, and then the control rod 4 is rotated to make the connecting rod 5 move along the horizontal groove so that the valve core 3 is partially or completely hidden inside the manhole cover body 1, and the quick-discharge hole 1-1 can be opened. In this process, the spring 6 is compressed and the connecting rod 5 can be stably limited in the limiting groove 2-1 under the action of the spring 6; when the quick-discharge hole 1-1 needs to be closed, the control rod 4 is rotated to make the connecting rod 5 move from the horizontal groove in the limiting groove 2-1 to the vertical groove. Under the action of the spring 6, the connecting rod 5 moves along the vertical groove and drives the valve core 3 to move into the quick-discharge hole 1-1.

[0025] See attached Figure 5 A drain hole 2-3 is also provided at the bottom of the limiting tube 2. A plurality of drain holes 2-3 are provided along the circumference of the limiting hole 2-2 so as to discharge the water in the limiting tube 2 in time.

[0026] See attached Figure 1 and 3A circular boss 1-3 extending inward is provided at the center of the inner side of the manhole cover body 1, and a countersunk hole 1-4 is provided at the center of the outer side. The depth of the countersunk hole 1-4 is greater than the thickness of the manhole cover body 1, and the diameter is smaller than the outer diameter of the circular boss 1-3. The center hole 1-2 is provided on the circular boss 1-3. The purpose of designing the circular boss 1-3 is, firstly, to set the countersunk hole 1-4 so that the depth of the countersunk hole 1-4 is greater than the thickness of the manhole cover body 1, so that the top end of the control rod 4 passes through the center hole 1-2 and is located in the countersunk hole 1-4, and the length of the top of the control rod 4 passing through the center hole is greater than the thickness of the manhole cover body 1 so that the control rod 4 can be lowered to a certain height so that the valve core 3 can be separated from the quick discharge hole 1-1 and the switch button 7 can be conveniently provided to press and rotate the control rod 4; secondly, to install the limit cylinder 2 so that the limit cylinder 2 is connected to the circular boss 1-3 through a thread, thereby realizing the connection with the manhole cover body 1.

[0027] See attached Figure 1 and 4 For the convenience of pressing down and rotating the control rod 4, a switch button 7 is provided on the top of the control rod 4. By pressing down and rotating the switch button 7, the quick discharge hole 1-1 can be opened or closed.

[0028] A connecting boss 4-1 is provided on the control rod 4, and a mounting hole 4-2 for mounting a connecting rod 5 is provided on the connecting boss 4-1. One end of the connecting rod 5 is located in the mounting hole 4-2, and the other end is connected to the valve core 3 by means of a bolt. During installation, it is only necessary to insert one end of the connecting rod 5 into the mounting hole 4-2, and the other end is connected to the valve core 3 by means of a bolt. The top of the spring 6 abuts against the bottom surface of the connecting boss 4-1, and the bottom abuts against the bottom inner end surface of the limiting cylinder 2.

[0029] See attached Figure 1 and 2 , drainage holes 1-5 are provided on the manhole cover body 1. Multiple groups of drainage holes 1-5 are provided along the circumference of the manhole cover body 1, and each group of drainage holes includes multiple drainage holes 1-5 arranged along the radial direction of the manhole cover body 1. Arc-shaped anti-skid convex strips 1-6 are also provided on the manhole cover body 1. The anti-skid convex strips 1-6 are located between two groups of drainage holes 1-5 and are arranged in multiple numbers along the radial direction of the manhole cover body 1 with increasing lengths.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for protection of the utility model.

Claims

1. A manhole cover, comprising a circular manhole cover body (1), characterized in that: A plurality of quick-discharge holes (1-1) are arranged in the middle of the manhole cover body (1) and along the circumference of the manhole cover body (1); a valve core assembly for opening or closing the quick-discharge holes (1-1) is arranged on the inner side of the manhole cover body (1); the valve core assembly comprises a limiting cylinder (2) fixed to the manhole cover body (1); a control rod (4) with two ends respectively limiting the limiting holes (2-2) at the bottom of the limiting cylinder (2) and the central hole (1-2) of the manhole cover body (1); a valve core (3) matching the shape of the quick-discharge holes (1-1); a connecting rod (5) connecting the valve core (3) and the control rod (4); and a spring (6) limited between the control rod (4) and the inner end surface of the limiting cylinder (2); an L-shaped limiting groove (2-1) is arranged on the limiting cylinder (2); and the connecting rod (5) is limited in the limiting groove (2-1).

2. The manhole cover according to claim 1, characterized in that: A circular boss (1-3) extending inwards is provided at the center of the inner side of the manhole cover body (1), and a countersunk hole (1-4) is provided at the center of the outer side, the depth of the countersunk hole (1-4) is greater than the thickness of the manhole cover body (1), and the center hole (1-2) is provided on the circular boss (1-3).

3. The manhole cover according to claim 2, characterized in that: The top end of the control rod (4) passes through the central hole (1-2) and is located in the counterbore (1-4).

4. The manhole cover according to claim 3, characterized in that: A switch button (7) is provided on the top of the control rod (4).

5. The manhole cover according to claim 2, characterized in that: The top of the limiting cylinder (2) is threadedly connected to the circular boss (1-3).

6. The manhole cover according to claim 1, characterized in that: A water discharge hole (2-3) is provided at the bottom of the limiting cylinder (2).

7. The manhole cover according to claim 1, characterized in that: A connecting boss (4-1) is provided on the control rod (4), and a mounting hole (4-2) for mounting the connecting rod (5) is provided on the connecting boss (4-1); one end of the connecting rod (5) is located in the mounting hole (4-2), and the other end is connected to the valve core (3) by means of a bolt.

8. The manhole cover according to any one of claims 1 to 7, characterized in that: Drain holes (1-5) are provided on the manhole cover body (1).

9. The manhole cover according to claim 8, characterized in that: A plurality of the drainage holes (1-5) are arranged along the radial direction of the manhole cover body (1), and a plurality of groups are arranged along the circumferential direction of the manhole cover body (1).

10. The manhole cover according to claim 8, characterized in that: Anti-slip convex strips (1-6) are provided on the manhole cover body (1).

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