Anti-flushing well lid

Abstract

The utility model discloses an anti-flushing well lid, and belongs to the field of well lids. The manhole cover is mainly designed aiming at the situation that the manhole cover is backwashed due to the fact that the water amount in a sewer line system is too large, the manhole cover and the manhole cover base are designed in a matched mode, the fixing component is additionally arranged between the manhole cover and the manhole cover base, the structure of the fixing component is simple, and the manhole cover can be controlled to be locked and unlocked very conveniently. And in addition, for the situation that the water amount is too large, the multiple one-way pressure relief holes are further formed in the surface of the well lid, water can be discharged from the lower portion of the well lid according to the recoil force of the water amount, the pressure relief openings are closed under the normal situation, and garbage cannot enter the well lid to cause blockage.

Description

Technical Field

[0001] The utility model belongs to the field of manhole covers, and in particular relates to an anti-flushing manhole cover. Background Art

[0002] When ordinary manhole covers are in use, when the amount of water in the well is too large, the manhole covers are easily washed open. This is the recoil phenomenon of the manhole cover. Especially in the face of heavy rain, due to the excessive load on the urban drainage system, the water pressure in the drainage system pipes increases sharply, which will cause the manhole cover to open again.

[0003] The recoil of the manhole cover causes it to suddenly pop up, which may cause serious harm to pedestrians and vehicles on the road. On the other hand, since there is no manhole cover to block it, the exposed wellhead will also cause more garbage to enter the drainage system, further worsening the condition of the drainage system.

[0004] Therefore, a new design is needed that can better deal with the recoil of the manhole cover caused by excessive water pressure in the drainage system. Utility Model Content

[0005] In view of the above problems existing in the prior art, the purpose of the utility model is to provide an anti-flushing manhole cover.

[0006] In order to solve the above problems, the technical solution adopted by the utility model is as follows:

[0007] A flushing-proof manhole cover comprises a manhole cover and a base, wherein the manhole cover is provided with a fixing piece and a plurality of pressure relief ports, the base is provided with a fixing base matching the fixing piece, and the manhole cover is also provided with a control piece for controlling the locking and unlocking of the fixing piece.

[0008] The pressure relief port is a one-way valve with adjustable pressure relief degree.

[0009] The fixing member is a long strip baffle, which is arranged below the manhole cover, with a certain gap between the baffle and the manhole cover, and the fixed base is a baffle arranged around the inner side of the base, and the baffle is provided with a groove for the baffle to pass through.

[0010] The baffle is connected to the manhole cover by bolts, and the gap between the baffle and the manhole cover can be adjusted by bolts.

[0011] A groove for passing the bolts is arranged above the manhole cover, and a control member connected with the bolts is arranged in the groove, and the height of the control member is the same as that of the groove.

[0012] The control member is a control knob, and the control knob can control the rotation of the baffle through a bolt.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model is mainly designed for the situation that the manhole cover recoils due to excessive water volume in the sewer system. By adaptively designing the manhole cover and the manhole cover base, a fixing component is added between the manhole cover and the manhole cover base, and the structure of the fixing component is simple, and it is also very convenient to control the locking and unlocking of the manhole cover. In addition, in the case of excessive water volume, a plurality of one-way pressure relief holes are also provided on the surface of the manhole cover, which can discharge water from under the manhole cover according to the recoil force of the water volume. Under normal circumstances, the pressure relief port is closed, and garbage will not enter the manhole cover to cause blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a top view of the manhole cover;

[0016] Figure 2 This is the main view of the manhole cover;

[0017] Figure 3 This is a top view of the base;

[0018] Figure 4 This is the main view of the base;

[0019] Figure 5 is a schematic diagram of the baffle structure;

[0020] Figure 6 The figure is a schematic diagram of the assembly of the manhole cover and the baffle;

[0021] In the figure: 1. manhole cover; 2. base; 3. fixing bolt; 4. baffle; 5. baffle plate; 6. pressure relief hole. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with specific embodiments.

[0023] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the utility model is mainly aimed at making further improvements to the manhole cover, and the main purpose of the improvement is to further strengthen the structural strength between the manhole cover 1 and the base 2 to prevent the manhole cover from recoil due to excessive water volume in the sewer system.

[0024] In this embodiment, the control component of the utility model mainly includes a baffle 4 arranged under the manhole cover 1 and a baffle 5 on the base 2. The structure of the manhole cover 1 is as follows: Figure 1 and Figure 2 As shown, a groove is provided in the center of the manhole cover 1, and the center of the groove runs through the entire manhole cover 1. The groove is used to set a fixing component. The main structure of the fixing component is as follows Figure 5As shown, the state in which it is combined on the manhole cover 1 is as follows Figure 6 shown.

[0025] The fixing bolt 3 passes through the groove in the center of the manhole cover 1, and a baffle 4 is fixed at the position where the fixing bolt 3 extends out of the manhole cover 1. The baffle 4 is fixed by two nuts, one above and one below. The position of the nuts and the baffle 4 is adjusted according to the actual spacing between the baffle 4 and the manhole cover 1.

[0026] In this embodiment, the fixing member that cooperates with the baffle plate 4 is a baffle plate 5 arranged around the inner side of the base 2. The baffle plate 5 is arranged below the inner circle of the base 2, and the distance between the baffle plate 5 and the top of the base is exactly the thickness of the manhole cover 1. After the manhole cover 1 is covered on the base 2, the top surface of the base 2 and the manhole cover 1 form a complete plane, and there will be no part of the manhole cover 1 convex or concave relative to the ground.

[0027] The overall structure of the baffle plate 5 is a ring with a diameter smaller than the length of the baffle plate 4, and a symmetrical groove is provided on the baffle plate 5. The width of the groove of the baffle plate 5 is wider than the width of the baffle plate 4, and the groove can allow the baffle plate 4 to pass through without causing any obstruction to the baffle plate 4.

[0028] A cover plate may be added to the groove in the middle part of the manhole cover 1. The height of the cover plate is the same as the depth of the groove of the manhole cover 1. After the cover plate is added to the groove part, a flat surface is formed on the surface of the manhole cover 1. The cover plate can just make up for the pit formed by the groove. In order to better adjust the rotation of the baffle 4, a control member connected to the fixing bolt 3 may be added to the groove part which is also under the cover plate. In this embodiment, the control member is a control knob. When it is necessary to rotate the baffle 4 to the groove part of the blocking plate 5 or to screw it from the groove part to the bottom of the blocking plate 5, open the cover plate and rotate the control knob to complete the rotation of the baffle 4, thereby realizing the unlocking and locking of the manhole cover 1.

[0029] At the same time, in order to prevent the water volume of the sewer system from being too large, resulting in excessive pressure under the manhole cover 1 and directly flushing the base 2, a plurality of pressure relief holes 6 are provided on the surface of the manhole cover 1. The overall structure of the pressure relief hole 6 is a one-way valve with adjustable pressure relief intensity. When the water pressure under the manhole cover 1 exceeds a predetermined pressure value, water will be ejected from the pressure relief hole 6 toward the top of the manhole cover 1 to relieve the pressure of the drainage system under the manhole cover 1. When the water pressure drops below the predetermined value after pressure relief, the pressure relief hole 6 will be closed again to prevent the garbage above the pressure relief hole 6 from entering the bottom of the manhole cover 1 through the pressure relief hole 6.

Claims

1. A flushing-proof manhole cover, characterized in that: It comprises a manhole cover and a base, wherein the manhole cover is provided with a fixing piece and a plurality of pressure relief ports, the base is provided with a fixing base matching the fixing piece, and the manhole cover is also provided with a control piece for controlling the locking and unlocking of the fixing piece.

2. The anti-scouring manhole cover according to claim 1, characterized in that: The pressure relief port is a one-way valve with adjustable pressure relief degree.

3. The anti-scouring manhole cover according to claim 1, characterized in that: The fixing part is a long strip baffle, which is arranged below the manhole cover, with a certain gap between the baffle and the manhole cover, and the fixed base is a baffle arranged around the inner side of the base, and the baffle is provided with a groove for the baffle to pass through.

4. The anti-scouring manhole cover according to claim 3, characterized in that: The baffle is connected to the manhole cover by bolts, and the gap between the baffle and the manhole cover can be adjusted by bolts.

5. The anti-scouring manhole cover according to claim 4, characterized in that: A groove for passing the bolts is arranged above the manhole cover, and a control member connected with the bolts is arranged in the groove, and the height of the control member is the same as that of the groove.

6. The anti-scouring manhole cover according to claim 5, characterized in that: The control member is a control knob, and the control knob can control the rotation of the baffle through a bolt.

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