Nodular cast iron well lid with drain holes

Abstract

The utility model relates to the related technical field of well lids, and provides a nodular cast iron well lid with drain holes, which comprises a derrick and a well lid, the well lid is arranged in the derrick, a fixed mounting component is arranged between the derrick and the well lid, a bottom frame is fixed at the bottom of the derrick, a reverse flushing component is arranged on the bottom frame, and an inner lid is arranged in the derrick. A circular groove is formed in the surface of the inner cover, a plurality of lower-layer holes are formed in the periphery of the inner bottom face of the circular groove, a plurality of annular grooves are formed in the surface of the well cover, and a plurality of upper-layer holes are formed in the annular grooves. By means of the technical scheme, the problems that in the related technology, an existing well lid is poor in safety, poor in corrosion resistance and short in service life, water passing holes formed in the existing well lid are small, and when rainwater is large or the well lid is located on a low-terrain road section, accumulated water on the road surface cannot be thoroughly treated in time are solved.

Description

Technical Field

[0001] The utility model relates to the technical field related to manhole covers, and specifically to a ductile iron manhole cover with a drainage hole. Background Art

[0002] In order to increase the durability of urban roads, they usually adopt a concrete and asphalt structure. The concrete has a dense texture and poor permeability, which can easily cause urban waterlogging during the rainy season. Therefore, during the construction of urban roads, corresponding sewers need to be laid to drain urban water in a timely manner. Sewers must have sewer outlets, and manhole covers need to be installed on the sewer outlets to prevent passers-by from falling into the sewer outlets and facilitate the inspection and cleaning of the sewers.

[0003] However, traditional reinforced concrete manhole covers tend to sink with the manhole ring, causing the manhole cover to be uneven with the road surface, and are prone to loosening during vehicle driving, which also produces a large impact force on the manhole cover. At the same time, as a facility that is often opened and closed, the reinforced concrete manhole cover will have edges that are broken or fractured after a short period of use. The existing manhole covers have poor safety, poor corrosion resistance, and a short service life. In addition, some water holes on the existing manhole covers are small. When the rain is heavy or the road is located in a low-lying section, the accumulated water on the road cannot be cleaned up in time, affecting the use of traffic. In addition, the manhole cover is prone to displacement or loss when it is in accumulated water for a long time.

[0004] Therefore, improvements are made to address the above problems. Utility Model Content

[0005] The utility model proposes a ductile iron manhole cover with drainage holes, which solves the problems in the related art that the existing manhole covers have poor safety, poor corrosion resistance, and short service life, and some water holes on the existing manhole covers are small, which makes it impossible to clean up the accumulated water on the road in time when there is heavy rain or the road is located in a low-lying section.

[0006] The technical solution of the utility model is as follows:

[0007] A derrick and a manhole cover, wherein the manhole cover is arranged inside the derrick;

[0008] A fixed installation component, the fixed installation component is arranged between the derrick and the manhole cover;

[0009] A base frame and a reverse flushing assembly, wherein the base frame is fixed to the bottom of the derrick, and the reverse flushing assembly is arranged on the base frame;

[0010] The fixed installation component includes an inner cover, which is installed in the derrick. A circular groove is provided on the surface of the inner cover, and a plurality of lower holes are provided around the bottom surface of the circular groove. A plurality of annular grooves are provided on the surface of the manhole cover, and a plurality of upper holes are provided in the annular grooves.

[0011] As a further technical solution, an internal thread layer is provided on the inner side of the circular groove, and an external thread layer is provided around the side surface of the manhole cover, and the external thread layer is screwed into the internal thread layer.

[0012] As a further technical solution, a plurality of slots are provided on the surface of the manhole cover, one end of the inner cover is rotatably connected to the derrick via a pin shaft, a threaded groove is provided on the surface of the inner cover, and a fixing bolt is screwed into the threaded groove.

[0013] As a further technical solution, the upper end of the fixing bolt is rotatably connected to a clamping plate, one end of the clamping plate is inserted into the clamping slot, the upper end of the fixing bolt is fitted with a sealing gasket, and the upper end of the fixing bolt is provided with a hexagonal groove.

[0014] As a further technical solution, the reverse flushing assembly includes a connecting sleeve, which is fixed in the base frame. A connecting pipe is provided at the bottom of the base frame, and a rotating pipe is rotatably connected in the connecting sleeve.

[0015] As a further technical solution, the lower end of the rotating tube is an open structure, the rotating tube is connected to the connecting tube, the rotating tube is a three-way structure, and a pair of nozzles are provided on the top of the rotating tube.

[0016] As a further technical solution, the inner surface of the circular groove is an inclined structural surface, and the inclined slope of the circular groove gradually decreases from the inside to the outside.

[0017] As a further technical solution, a plurality of outer grooves are opened around the outer surface of the derrick, and the bottom of the outer grooves is a through structure.

[0018] As a further technical solution, the pair of nozzles have a certain inclination angle, and the inclination angles of the pair of nozzles are opposite.

[0019] The working principle and beneficial effects of the utility model are as follows:

[0020] 1. The utility model is provided with a fixed installation component. Through the interaction of the inner cover, circular groove, lower hole, upper hole, internal thread layer, card slot and card plate, drainage can be carried out through the upper hole and lower hole. It adopts a layered structure and can be opened for cleaning, which has a good drainage effect.

[0021] 2. The utility model is provided with a reverse flushing component. Through the interaction of structures such as the connecting sleeve, the connecting pipe, the rotating pipe and the nozzle, the water pressure can be used to cooperate with the inclined nozzle to achieve the effect of rotational flushing, which can flush the lower holes and avoid the inability to drain water in time when blocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0023] Figure 1 This is a schematic diagram of the structure of the utility model;

[0024] Figure 2 This is the axonometric drawing of the utility model;

[0025] Figure 3 This is an axonometric sectional view of the utility model;

[0026] Figure 4 For this utility model Figure 3 A partial enlarged view of part A;

[0027] In the figure: 1. Derrick; 2. Derrick cover; 3. Base frame; 4. Fixed installation assembly; 4-1. Inner cover; 4-2. Circular groove; 4-3. Lower hole; 4-4. Annular groove; 4-5. Upper hole; 4-6. Internal thread layer; 4-7. External thread layer; 4-8. Clamping groove; 4-9. Threaded groove; 4-10. Fixing bolt; 4-11. Clamping plate; 4-12. Sealing gasket; 4-13. Hexagonal groove; 5. Reverse flushing assembly; 5-1. Connecting sleeve; 5-2. Connecting pipe; 5-3. Rotating pipe; 5-4. Nozzle; 6. External groove. DETAILED DESCRIPTION

[0028] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] like Figures 1 to 4 As shown, this embodiment provides a ductile iron manhole cover with drainage holes, including

[0030] A derrick 1 and a manhole cover 2, wherein the manhole cover 2 is arranged inside the derrick 1;

[0031] A fixed installation component 4 is provided between the derrick 1 and the manhole cover 2;

[0032] The base frame 3 and the reverse flushing assembly 5 are fixed to the bottom of the derrick 1 and the reverse flushing assembly 5 is arranged on the base frame 3;

[0033] The fixed installation assembly 4 includes an inner cover 4-1, which is installed in the derrick 1. A circular groove 4-2 is opened on the surface of the inner cover 4-1, and a plurality of lower holes 4-3 are opened around the inner bottom surface of the circular groove 4-2. A plurality of annular grooves 4-4 are opened on the surface of the manhole cover 2, and a plurality of upper holes 4-5 are opened in the annular groove 4-4. An internal thread layer 4-6 is provided on the inner side of the circular groove 4-2, and an external thread layer 4-7 is provided around the side surface of the manhole cover 2. The external thread layer 4-7 is screwed to the internal thread layer 4- 6, a plurality of card slots 4-8 are provided on the surface of the manhole cover 2, one end of the inner cover 4-1 is rotatably connected to the derrick 1 through a pin shaft, a threaded groove 4-9 is provided on the surface of the inner cover 4-1, a fixing bolt 4-10 is screwed into the threaded groove 4-9, the upper end of the fixing bolt 4-10 is rotatably connected to the card plate 4-11, one end of the card plate 4-11 is inserted into the card slot 4-8, the upper end of the fixing bolt 4-10 is sleeved with a sealing gasket 4-12, and the upper end of the fixing bolt 4-10 is provided with a hexagonal groove 4-13.

[0034] In this embodiment, in order to achieve the effect of being able to fix the manhole cover 2 and drain water, a fixed installation component 4 is designed. An inner cover 4-1 is installed inside the derrick 1. One end of the inner cover 4-1 is rotatably connected to the derrick 1 through a pin shaft. The inner cover 4-1 can be rotated upward to open. The manhole cover 2 is installed in the inner cover 4-1. A circular groove 4-2 is opened on the surface of the inner cover 4-1 and an internal thread layer 4-6 is provided. An external thread layer 4-7 is provided at the bottom of the manhole cover 2. The manhole cover 2 can be connected to the internal thread layer 4-7 through the external thread layer 4-7. The layers 4-6 are screwed together, a plurality of lower holes 4-3 are provided in the circular groove 4-2, a circular groove 4-4 and a plurality of upper holes 4-5 are provided on the surface of the manhole cover 2, which can be used for drainage, a plurality of card grooves 4-8 are provided around the surface of the manhole cover 2, a threaded groove 4-9 is provided on the surface of the inner cover 4-1 and is screwed together with a fixing bolt 4-10, and a card plate 4-11 is rotatably sleeved on the upper end of the fixing bolt 4-10, and the card plate 4-11 is stuck in the card groove 4-8, so that the manhole cover 2 cannot be rotated through the outer thread layer 4-7.

[0035] Furthermore, the reverse flushing assembly 5 includes a connecting sleeve 5-1, which is fixed in the base frame 3. A connecting pipe 5-2 is provided at the bottom of the base frame 3. A rotating pipe 5-3 is rotatably connected in the connecting sleeve 5-1. The lower end of the rotating pipe 5-3 is an open structure. The rotating pipe 5-3 is connected to the connecting pipe 5-2. The rotating pipe 5-3 is a three-way structure. A pair of nozzles 5-4 are provided at the top of the rotating pipe 5-3.

[0036] In this embodiment, in order to achieve the effect of flushing the lower hole 4-3 to avoid blockage, a reverse flushing component 5 is designed. A connecting sleeve 5-1 is fixed in the base frame 3, and a rotating tube 5-3 is rotatably connected in the connecting sleeve 5-1. A connecting tube 5-2 is provided at the bottom of the base frame 3. The connecting tube 5-2 is connected to the rotating tube 5-3. The connecting tube 5-2 is used to connect the water supply. The rotating tube 5-3 is a three-way structure and is provided with nozzles 5-4 at both ends of the top. When the nozzle 5-4 sprays water, the rotating tube 5-3 can be pushed to rotate by water pressure.

[0037] Furthermore, the inner surface of the circular groove 4-2 is an inclined structural surface, and the inclined slope of the circular groove 4-2 gradually decreases from the inside to the outside.

[0038] In this embodiment, the inclined surface facilitates the water to flow around in the circular groove 4-2, ensuring that it is fully discharged by the lower hole 4-3 without any residue.

[0039] Furthermore, a plurality of outer grooves 6 are provided around the outer surface of the derrick 1 , and the bottom of the outer groove 6 is a through structure.

[0040] In this embodiment, the outer groove 6 with a through structure is provided for coordinated installation.

[0041] Furthermore, the pair of nozzles 5 - 4 have a certain inclination angle, and the inclination angles of the pair of nozzles 5 - 4 are opposite.

[0042] In this embodiment, the water flow is sprayed out at an angle through the angle, and the tilted angle can generate thrust on the rotating tube 5-3, so as to achieve the effect of rotation of the rotating tube 5-3 during the flushing process.

[0043] When it is needed, the manhole cover 2 is installed and fixed, and the connecting pipe 5-2 is connected to the water supply pipeline. The manhole cover 2 is screwed to the internal threaded layer 4-6 through the external threaded layer 4-7. After fixing, the clamping plate 4-11 is screwed to the threaded groove 4-9 through the fixing bolt 4-10. The clamping plate 4-11 is inserted into the clamping groove 4-8 to limit the manhole cover 2. During use, water can be drained through the upper hole 4-5 and the lower hole 4-3. When foreign matter blocks the lower hole 4-3, the water supply pipeline is opened, and the nozzle 5-4 sprays water to the lower hole 4-3. The rotating tube 5-3 will rotate during the spraying, and the water flow will flush all the lower holes 4-3 with the rotation. When the blockage is serious, the manhole cover 2 can be separated and removed for cleaning.

[0044] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A ductile iron manhole cover with drainage holes, characterized in that: include A derrick (1) and a manhole cover (2), wherein the manhole cover (2) is arranged inside the derrick (1); A fixed installation component (4), the fixed installation component (4) being arranged between the derrick (1) and the manhole cover (2); A base frame (3) and a reverse flushing assembly (5), wherein the base frame (3) is fixed to the bottom of the derrick (1), and the reverse flushing assembly (5) is arranged on the base frame (3); The fixed installation assembly (4) comprises an inner cover (4-1), the inner cover (4-1) being installed in the well frame (1), the inner cover (4-1) being provided with a circular groove (4-2) on its surface, the inner bottom surface of the circular groove (4-2) being provided with a plurality of lower holes (4-3) around its periphery, the well cover (2) being provided with a plurality of annular grooves (4-4), the annular grooves (4-4) being provided with a plurality of upper holes (4-5).

2. The ductile iron manhole cover with drainage holes according to claim 1, characterized in that: An internal thread layer (4-6) is provided on the inner side of the circular groove (4-2), an external thread layer (4-7) is provided around the side surface of the manhole cover (2), and the external thread layer (4-7) is screwed into the internal thread layer (4-6).

3. The ductile iron manhole cover with drainage holes according to claim 2, characterized in that: A plurality of slots (4-8) are provided on the surface of the manhole cover (2); one end of the inner cover (4-1) is rotatably connected to the derrick (1) via a pin shaft; a threaded groove (4-9) is provided on the surface of the inner cover (4-1); a fixing bolt (4-10) is screwed into the threaded groove (4-9).

4. The ductile iron manhole cover with drainage holes according to claim 3, characterized in that: The upper end of the fixing bolt (4-10) is rotatably sleeved and connected to a clamping plate (4-11), one end of the clamping plate (4-11) is inserted into the clamping groove (4-8), the upper end of the fixing bolt (4-10) is sleeved with a sealing rubber gasket (4-12), and the upper end of the fixing bolt (4-10) is provided with a hexagonal groove (4-13).

5. The ductile iron manhole cover with drainage holes according to claim 1, characterized in that: The reverse flushing assembly (5) comprises a connecting sleeve (5-1), the connecting sleeve (5-1) being fixed in the base frame (3), a connecting pipe (5-2) being provided at the bottom of the base frame (3), and a rotating pipe (5-3) being rotatably connected in the connecting sleeve (5-1).

6. The ductile iron manhole cover with drainage holes according to claim 5, characterized in that: The lower end of the rotating tube (5-3) is an open structure. The rotating tube (5-3) is connected to the connecting tube (5-2). The rotating tube (5-3) is a three-way structure. A pair of nozzles (5-4) is provided on the top of the rotating tube (5-3).

7. The ductile iron manhole cover with drainage holes according to claim 1, characterized in that: The inner surface of the circular groove (4-2) is an inclined structural surface, and the inclined slope of the circular groove (4-2) gradually decreases from the inside to the outside.

8. The ductile iron manhole cover with drainage holes according to claim 1, characterized in that: A plurality of outer grooves (6) are provided around the outer surface of the derrick (1), and the bottom of the outer grooves (6) is a through structure.

9. The ductile iron manhole cover with drainage holes according to claim 6, characterized in that: The pair of nozzles (5-4) have a certain inclination angle, and the inclination angles of the pair of nozzles (5-4) are opposite.

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