An anti-overflow device applicable to inspection wells

Abstract

The present invention relates to the technical field of inspection wells, and particularly relates to an anti-overflow device suitable for inspection wells, comprising: a manhole cover, a manhole cover frame, a buoyancy mechanism, a hinge mechanism, a traction mechanism and a fixing mechanism; the manhole cover frame is connected to at least the top wall of the well chamber main body; the manhole cover is installed upside down and connected to the manhole cover frame through the hinge mechanism; it is also connected to the traction mechanism. When it is necessary to close the manhole cover, the manhole cover is pulled through the traction mechanism, and the manhole cover rotates through the hinge mechanism until it fits with the manhole cover frame. The fixing mechanism is connected to the manhole and keeps the manhole cover in this fitting position through the traction mechanism; the buoyancy mechanism is located in the well chamber main body and connected to the manhole cover plate. When the buoyancy mechanism contacts the liquid in the well chamber main body, it is used to transfer its buoyancy to the manhole cover plate, providing an upward force for the manhole cover plate, causing the manhole cover to rotate upward through the hinge mechanism and closely fit with the manhole cover frame, and at the same time pressing the manhole cover frame upward, so that the manhole cover frame closely fits with the top wall of the well chamber main body.

Description

Technical Field

[0001] The present invention relates to the technical field of inspection wells, and particularly relates to an anti-overflow device applicable to inspection wells. Background Art

[0002] The phenomena of drainage pipe overflow and backwater often occur during summer rainstorms. Affected by many factors such as the position and trend of the drainage pipe, the treatment capacity of the sewage treatment plant, the cross-discharge capacity of the sewage treatment plant, and the river water level, the drainage pipe operates overloaded in a short time, and the stagnant water in the pipe continuously rises in the inspection well, causing the inspection well cover to be backwatered or overflowed. Most of the overflow pipelines are main pipelines of the trunk line or the basin. If the problem of inspection well cover backwater or overflow cannot be solved in time, it will lead to large areas of waterlogging outside the rainwater well in the city and the problem of sewage overflow outside the sewage well polluting the surrounding environment. Therefore, it is necessary to install an anti-overflow device at the inspection well of the backwater or overflow point in time to avoid the situation of the inspection well cover being backwatered or overflowed.

[0003] Currently, for the phenomena of inspection well overflow and backwater, methods such as excavation and dredging of the downstream and modification and replacement of pipelines are mostly used, which have a greater impact on the environment and road traffic, and have a longer construction period and higher cost. Summary of the Invention

[0004] The purpose of the present invention is to overcome the problems of large environmental and traffic impacts, long construction period and high cost caused by the existing method of relying on water cut-off construction to solve the backwater and overflow phenomena of inspection wells, and thus provide an anti-overflow device applicable to inspection wells.

[0005] To solve the above technical problems, the technical solution of the present invention provides an anti-overflow device applicable to inspection wells, and the inspection well includes: a hollow well chamber main body and a hollow manhole; the top end of the well chamber main body has an opening of the well chamber main body, and the opening of the well chamber main body is communicated with the bottom end of the manhole;

[0006] The anti-overflow device includes: a manhole cover, a manhole cover frame matching the manhole cover, a buoyancy mechanism, a hinge mechanism, a traction mechanism, and a fixing mechanism; wherein,

[0007] The manhole cover frame is connected to at least the top wall of the well chamber main body;

[0008] The manhole cover includes: a manhole cover plate and a manhole cover flange; the manhole cover is installed upside down, and in the closed state of the manhole cover, the manhole cover flange is located above the manhole cover plate and extends towards the manhole; the manhole cover is connected to the manhole cover frame through a hinge mechanism; the manhole cover is also connected to the traction mechanism;

[0009] The fixing mechanism is used to be connected to the traction mechanism and the manhole respectively; when it is necessary to close the manhole cover, the manhole cover is pulled by the traction mechanism, and the manhole cover rotates through the hinge mechanism until it fits with the manhole cover frame, the fixing mechanism is connected to the manhole, and the manhole cover is kept in the fitting position through the traction mechanism;

[0010] The buoyancy mechanism is located inside the main body of the well chamber and is connected to the well cover plate. When the buoyancy mechanism comes into contact with the liquid in the well chamber main body, it is used to transfer its buoyancy to the well cover plate, providing an upward force to the well cover plate, causing the well cover to rotate upward through the hinge mechanism and closely fit the well cover frame, and at the same time pressing the well cover frame upward to make the well cover frame closely fit the top wall of the well chamber main body.

[0011] Preferably, the well cover frame includes: a skirt for connecting to the top wall of the well chamber main body and a side wall extending towards the manhole.

[0012] Preferably, the well cover frame is a combined well cover frame, which is divided into at least two parts along the axis direction of the manhole.

[0013] Preferably, the well cover frame is cast from aluminum alloy.

[0014] Preferably, the well cover frame is connected to the top wall of the well chamber main body through expansion bolts, and the well cover frame is also connected to the side wall of the well chamber main body through expansion bolts.

[0015] Preferably, two lifting lugs are symmetrically arranged at the top of the side wall of the well cover frame.

[0016] Preferably, the buoyancy mechanism includes: a floating ball and a connecting rod. One end of the connecting rod is connected to the well cover plate, and the other end is connected to the floating ball. The floating ball is located inside the well chamber main body and comes into contact with the liquid in the well chamber main body when the liquid level in the well chamber main body rises to a preset height.

[0017] Preferably, a second sealing ring is further arranged between the well cover and the well cover frame, and a first sealing ring is further arranged between the well cover frame and the top wall of the well chamber main body. Among them, the materials of the first sealing ring and the second sealing ring are both rubber; the first sealing ring is connected to the well cover frame by means of pasting; the second sealing ring is connected to the well cover by means of pasting.

[0018] Preferably, the hinge mechanism includes: a first connecting wall, a second connecting arm and a pin shaft; wherein, the first connecting arm is connected to the flange of the well cover frame, and the second connecting arm is connected to the well cover plate of the well cover; the first connecting wall is also connected to the second connecting arm through the pin shaft.

[0019] Preferably, the traction mechanism includes a rope; the fixing mechanism includes: expansion bolts.

[0020] Compared with the prior art, the present invention provides a method of using product design to replace construction to solve problems. It adopts an inverted manhole cover form to prevent overflow. Under the buoyancy of the floating ball connected below the manhole cover, the manhole cover fits more closely with the frame, has better sealing performance, and the overall manhole cover is made of ZL104 aluminum alloy material, ensuring a large bearing strength under the condition of relatively light mass. It is installed at the bottom of the inspection well manhole to achieve the anti-overflow effect of the inspection well. The overall diameter of the frame is larger than the diameter of the manhole. By the method of disassembling and then assembling after lowering into the well, the well ring frame is operated, and the installation of the anti-overflow device can be achieved without excavation, and the original well chamber structure is not affected after installation, avoiding the increase in the difficulty of workers entering the well for operation after installation, reducing the transformation cost, and not affecting the later maintenance. In addition, during the installation process of the anti-overflow device, it is simple and convenient, does not require complex equipment, and has a wide application prospect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 FIG. is a schematic diagram of the overall structure of the anti-overflow device applicable to the inspection well;

[0022] Figure 2 FIG. is an installation schematic diagram of the combined manhole cover frame 5. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following further illustrates the technical solutions provided by the present invention with reference to the embodiments.

[0024] The present invention aims at the overflow and jacking phenomena of drainage pipes, and is applicable to the situation where the soil cover above the inspection well cover is thick enough to bear a large water pressure. It involves the addition and improvement of the inspection well structure, aiming to solve the overflow and jacking phenomena at the inspection well opening during summer rainstorms, and at the same time minimize the impact on the surrounding area under the premise of non-excavation.

[0025] Based on the principle of inverting the manhole cover, this embodiment provides a simple, convenient and easy-to-install anti-overflow device. The main working mechanism is to install it in an inverted manner by utilizing the characteristic of one-way opening of the manhole cover, so that rainwater or sewage cannot overflow. It realizes non-excavation that can actually solve practical problems, and the environmental requirements in the pipeline during construction are relatively low. During construction, it is not necessary to block the two ends of the pipeline for cut-off operation. Using equipment installation instead of engineering, it has a large time flexibility and high speed, and can be applicable to inspection wells of various structural forms.

[0026] The inspection well 2 generally includes: a well chamber main body 21 with a hollow interior and a manhole 4 with a hollow interior; the top end of the well chamber main body 21 has a well chamber main body opening, and this well chamber main body opening is communicated with the bottom end of the manhole 4;

[0027] The anti-overflow device includes: a manhole cover 7, a manhole cover frame 5 matching the manhole cover 7, a buoyancy mechanism, a hinge mechanism, a traction mechanism and a fixing mechanism; wherein,

[0028] The manhole cover 7 includes: a manhole cover plate and a manhole cover flange;

[0029] The manhole cover frame 5 is connected to at least the top wall of the manhole chamber main body 21;

[0030] The manhole cover 7 is installed in an inverted manner. When the manhole cover 7 is in the closed state, the manhole cover flange is located above the manhole cover plate and extends towards the manhole 4; the manhole cover 7 is connected to the manhole cover frame 5 through a hinge mechanism; the manhole cover 7 is also connected to a traction mechanism;

[0031] The fixing mechanism is respectively connected to the traction mechanism and the manhole 4; when it is necessary to close the manhole cover 7, the manhole cover 7 is pulled by the traction mechanism, and the manhole cover 7 rotates through the hinge mechanism until it fits with the manhole cover frame 5. The fixing mechanism is connected to the manhole 4, and the manhole cover 7 is fixed to the fitting position through the traction mechanism;

[0032] The buoyancy mechanism is located in the manhole chamber main body 21 and is connected to the manhole cover plate. When the buoyancy mechanism comes into contact with the liquid in the manhole chamber main body 21, it is used to transfer its buoyancy to the manhole cover plate, providing an upward force for the manhole cover plate, causing the manhole cover 7 to rotate upward through the hinge mechanism and closely fit with the manhole cover frame 5, and at the same time pressing the manhole cover frame 5 upward, so that the manhole cover frame 5 closely fits with the top wall of the manhole chamber main body 21.

[0033] Preferably, the manhole cover frame 5 includes: a skirt for connecting to the top wall of the manhole chamber main body 21 and a side wall extending towards the manhole 4.

[0034] Preferably, two lifting lugs 10 are symmetrically arranged at the top of the side wall of the manhole cover frame 5.

[0035] Preferably, the manhole cover frame 5 is a combined manhole cover frame 5, which is divided into at least two parts along the axis direction of the manhole 4. Figure 2 A combined manhole cover frame 5 divided into two parts along the axis direction of the manhole 4 is shown. The manhole cover frame 5 can also be cut along other directions, but it is necessary to ensure that each part after cutting can pass through the manhole 4, and each part can be combined into a complete manhole cover frame 5.

[0036] Preferably, the manhole cover frame 5 is cast from aluminum alloy.

[0037] Preferably, the manhole cover frame 5 is connected to the manhole chamber main body 21 through expansion bolts.

[0038] Preferably, the buoyancy mechanism includes: a floating ball 9 and a connecting rod. One end of the connecting rod is connected to the well cover plate, and the other end is connected to the floating ball 9. The floating ball 9 is located inside the well chamber main body 21. When the liquid level inside the well chamber main body 21 reaches a preset height, it contacts the liquid inside the well chamber main body 21, such as water. The buoyancy mechanism can also be provided with only the floating ball 9, which is directly connected to the well cover plate through the floating ball 9. The buoyancy mechanism is not limited to the spherical floating ball 9, and can also be other shapes with buoyancy in water. When the water inside the well chamber main body 21 rises to the preset water level, it can contact the water inside the well chamber main body 21. When the water level is low, the floating ball 9 can be above the water surface. When the water level rises, the water will contact and even submerge the floating ball 9, and continuously provide buoyancy for the floating ball 9. Under the action of buoyancy, the floating ball 9 pushes the well cover 7 upward, making it closely fit the combined well cover frame 5, thereby enhancing the tightness. At the same time, the upward force is transmitted to the combined well cover frame 5, making the combined well cover frame 5 fit more closely with the top of the well chamber main body 21. Preferably, a second sealing ring 8 is also provided between the well cover 7 and the well cover frame 5, and a first sealing ring 6 is provided between the well cover frame 5 and the top wall of the well chamber main body 21. In some cases, the side wall of the well cover frame 5 may contact the side wall of the well chamber main body 21, and a sealing ring can also be provided at the contact point.

[0039] Preferably, the materials of the first sealing ring 6 and the second sealing ring 8 are both rubber; the first sealing ring 6 is connected to the well cover frame 5 by means of adhesion; the second sealing ring 8 is connected to the well cover 7 by means of adhesion.

[0040] Preferably, the hinge mechanism includes a first connecting wall, a second connecting arm, and a pin shaft. The first connecting arm is connected to the flange of the well cover frame 5, and the second connecting arm is connected to the well cover plate of the well cover 7; the first connecting wall is also connected to the second connecting arm through the pin shaft.

[0041] Preferably, the traction mechanism includes a rope 13.

[0042] Preferably, the fixing mechanism includes: an expansion bolt 1.

[0043] The structure of this embodiment will be described below with reference to the accompanying drawings.

[0044] As Figure 1 shown, the whole device can successively have an expansion bolt 1, a rope 13, a combined well cover frame 5, a first sealing ring 6, a second sealing ring 8, a well cover 7, a floating ball 9, a lifting lug 10, and a split pin 12 from top to bottom.

[0045] During installation, after each part of the combined well cover frame 5 is lowered into the well chamber main body 21 through the lifting lug 2, it is combined completely at the three connection points 11 and is at least connected to the top wall of the well chamber main body 21. As Figure 2 shown, the combined well cover frame 5 of this embodiment is divided into two parts.

[0046] In this embodiment, three holes are provided on the side and bottom of the combined manhole cover frame 5, and it can be connected to the manhole 4 and the main well chamber 21 through expansion bolts. The manhole cover 7 is connected to the combined manhole cover frame 5 through a pin shaft to realize the hinge function for opening and closing. The top wall between the combined manhole cover frame 5 and the main well chamber 21 and between the manhole cover 7 and the combined manhole cover frame 5 are respectively ensured airtight by the first sealing ring 6 and the second sealing ring 8. The manhole cover 7 is connected to the expansion bolt 1 in the manhole 4 through a rope 13 to achieve airtightness and fixation. The equipment casting is made of aluminum alloy, and the first sealing ring 6 and the second sealing ring 8 are respectively connected to the combined manhole cover frame 5 and the manhole cover 7 by pasting. This installation process requires no other construction equipment cooperation except for necessary drilling equipment, which is simple and convenient.

[0047] Figure 1 Schematic diagram of the overall structure of the anti-overflow device.

[0048] The steps for installing the anti-overflow device are as follows:

[0049] Lift the manhole cover 7, the combined manhole cover frame 5 and the floating ball 9 into the main well chamber 21, and use bolts to assemble the combined manhole cover frame 5 at three connection positions 11. Paste the first sealing ring 6 and the second sealing ring 8 at the corresponding positions of the combined manhole cover frame 5 and the manhole cover 7 respectively. Use ropes to tie the two lifting lugs 10 on both sides of the combined manhole cover frame 5, lift it so that its upper side is closely attached to the top wall of the main well chamber 21, and the two right-angled sides are closely attached to the inner wall of the main well chamber 21, and use expansion bolts to connect to the manhole 4 and the top of the main well chamber 21. Use split pins 12 to connect the manhole cover 7 and the combined manhole cover frame 5, and connect the floating ball 9 and the manhole cover 7. Connect one end of the rope 13 to the connection on the upper surface of the manhole cover 7, and pull the other end of the manhole cover 7 to be airtight and then fix it at the expansion bolt 1. When the water surface in the main well chamber 21 rises, the buoyancy makes the manhole cover 7 fit more closely with the combined manhole cover frame 5 and between the combined manhole cover frame 5 and the top of the main well chamber 21, enhancing airtightness. It can be installed before the flood season and can also be disassembled after the flood season.

[0050] When this equipment is installed, under the action of the water surface overflowing in the main well chamber 21, the floating ball 9 provides an upward buoyancy force for the manhole cover 7, which closely fits the combined manhole cover frame 5, thereby enhancing airtightness.

[0051] The anti-overflow device applicable to inspection wells provided in this embodiment is installed below the manhole 4 of the inspection well that is slightly smaller than the diameter of the device. The device is lowered into the well without excavation through the form of frame disassembly and combination. At the same time, the connected floating ball 7 relies on buoyancy to enhance the airtightness and prevent leakage. The aluminum alloy material has a relatively small density and high strength, and can effectively resist water pressure. It is especially applicable to complex working conditions with thick overburden and complex internal flow channels in the well chamber 2, such as tee and cross-shaped well chambers where it is difficult to seal the flow channels. Since most of the jacking and overflow positions of inspection wells are located at busy intersections with a large flow of people and great transportation pressure, excavation works are not applicable. The present invention changes the original high-cost method of hydrophobicity by excavating and modifying the entire pipeline, and realizes anti-overflow at important overflow points. The diameter of the equipment is larger than that of the manhole. Although it still needs to be excavated to lower the well, it can be disassembled, lowered into the well and then reassembled, without the need for excavation. Moreover, each individual part has a smaller size and lighter weight, making it easier to operate.

[0052] After adopting the above technical solutions, the present invention has the following positive effects: The present invention does not require excavation of the well chamber, and requires less manpower and material resources for installing the equipment. Relying on the internal water pressure of the well chamber, by connecting a floating ball below the manhole cover, under the action of buoyancy, the manhole cover and the frame can be closely fitted, and then the frame and the top of the well chamber can be closely fitted, thus ensuring the sealing effect at the connection. After the flood season ends, the equipment can be disassembled, assembled and maintained, so that the equipment of the present invention can be used multiple times and in multiple places.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the embodiments, those of ordinary skill in the art should understand that any modification or equivalent replacement of the technical solutions of the present invention does not depart from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A overflow prevention device suitable for an inspection well, the inspection well comprising: A well chamber body with a hollow interior and a manhole with a hollow interior; The top of the well body is provided with a well body opening, and the well body opening is communicated with the bottom end of the manhole; The overflow prevention device comprises: a manhole cover, a manhole cover frame matching the manhole cover, a buoyancy mechanism, a hinge mechanism, a traction mechanism and a fixing mechanism; wherein, The manhole cover frame is at least connected to the top wall of the manhole chamber body; The manhole cover comprises: a manhole cover plate and a manhole cover flange; the manhole cover is installed upside down, and when the manhole cover is in a closed state, the manhole cover flange is located above the manhole cover plate and extends toward the manhole; the manhole cover is connected to the manhole cover frame through a hinge mechanism; the manhole cover is also connected to a traction mechanism; The fixing mechanism is used to be connected to the traction mechanism and the manhole respectively; when the manhole cover needs to be closed, the manhole cover is pulled by the traction mechanism, and the manhole cover is rotated by the hinge mechanism until it fits with the manhole cover frame, and the fixing mechanism is connected to the manhole, and the manhole cover is kept in the fitting position by the traction mechanism; The buoyancy mechanism is located in the well chamber body and connected to the well cover plate. When the buoyancy mechanism contacts the liquid in the well chamber body, it is used to transfer its buoyancy to the well cover plate, provide an upward force for the well cover plate, so that the well cover rotates upward through the hinge mechanism and fits tightly to the well cover frame, and at the same time presses the well cover frame upward to make the well cover frame fit tightly to the top wall of the well chamber body. The buoyancy mechanism includes: a float and a connecting rod, one end of the connecting rod is connected to the well cover plate, and the other end is connected to the float. The float is located in the well chamber body, and contacts the liquid in the well chamber body when the liquid level in the well chamber body rises to a preset height. The manhole cover frame includes: a skirt for connecting with the top wall of the manhole body and a side wall extending toward the manhole; The manhole cover frame is a combined manhole cover frame, which is divided into at least two parts along the axis direction of the manhole.

2. The overflow prevention device for inspection wells according to claim 1, characterized in that: The manhole cover frame is cast from aluminum alloy.

3. The overflow prevention device for inspection wells according to claim 1, characterized in that: The manhole cover frame is connected to the top wall of the manhole chamber body through expansion bolts, and the manhole cover frame is also connected to the side wall of the manhole chamber body through expansion bolts.

4. The overflow prevention device for inspection wells according to claim 1, characterized in that: Two lifting ears are symmetrically arranged on the top of the side wall of the manhole cover frame.

5. The overflow prevention device for inspection wells according to claim 1, characterized in that: A second sealing ring is also arranged between the manhole cover and the manhole cover frame, and a first sealing ring is also arranged between the manhole cover frame and the top wall of the well chamber body, wherein the first sealing ring and the second sealing ring are both made of rubber; the first sealing ring is connected to the manhole cover frame by gluing; and the second sealing ring is connected to the manhole cover by gluing.

6. The overflow prevention device for inspection wells according to claim 1, characterized in that: The hinge mechanism includes: a first connecting arm, a second connecting arm and a pin shaft; wherein the first connecting arm is connected to the flange of the manhole cover frame, and the second connecting arm is connected to the manhole cover plate of the manhole cover; the first connecting arm is also connected to the second connecting arm via a pin shaft.

7. The overflow prevention device for inspection wells according to claim 1, characterized in that: The traction mechanism includes a rope; the fixing mechanism includes an expansion bolt.

Images