CN112854421A - Explosion-proof inspection well cover - Google Patents

Abstract

The invention discloses an explosion-proof inspection well cover which comprises a base and a base, wherein an upper cover plate is fixedly arranged at the upper end of the base, a gear box is fixedly arranged at the lower end of the base, a plurality of exhaust cavities and drainage cavities are arranged between the upper cover plate and the base, so that the gas and the solid at the upper end and the lower end of the inspection well cover can be completely separated on the premise of not influencing the drainage function, the combustible gas below the inspection well cover cannot overflow to the ground, fire sources such as aboveground fire sources and smoke heads can only fall into the drainage cavities, the drainage cavities can extinguish the fire sources by using accumulated water, if the underground gas is accidentally exploded, an arc-shaped buffer block can pull the inspection well cover to prevent the inspection well cover from flying out under the action of explosive gas flow, and a pressure relief device can discharge the residual gas flow to protect the.

Description

Explosion-proof inspection well cover

Technical Field

The invention relates to the field of inspection well covers, in particular to an explosion-proof inspection well cover.

Background

There are many underground pipelines in city construction, these pipelines have an outlet to ground every section, this section from pipeline to ground is called the inspection shaft, the inspection shaft needs the corresponding inspection shaft cover to cover, ordinary inspection shaft cover is made of materials such as reinforced concrete, metal, reinforced plastics, etc. commonly, but form and function are single, can open the inspection shaft cover by hooking the hole site on the cover, in the face of the situation that the accident explosion happens underground, ordinary inspection shaft cover will often be lifted and flown by the blast stream, the well cover that flies out very easily causes the serious consequence, therefore it is necessary to design an explosion-proof inspection shaft cover to improve the above-mentioned problem.

Disclosure of Invention

The invention aims to provide an explosion-proof inspection well cover which can overcome the defects in the prior art, so that the practicability of equipment is improved.

In a preferred embodiment, the explosion-proof inspection well cover comprises a base and a base, wherein an upper cover plate is fixedly arranged at the upper end of the base, a gear box is fixedly arranged at the lower end of the base, a plurality of exhaust cavities and drainage cavities are arranged between the upper cover plate and the base, a gear shaft which sequentially penetrates through the base and the upper cover plate is rotatably arranged in the gear box, a hexagonal groove is arranged at the upper end of the gear shaft, the gear shaft can be driven to rotate by the meshing of a tool with a corresponding shape and the groove, a gear is fixedly arranged at the lower end of the gear shaft, two racks which are centrosymmetric by taking the round points of the gear shaft as the center point are arranged in the gear box, the outer ends of the two racks on one side of the gear shaft are fixedly provided with buffer arc-shaped blocks according to the principle, the gear rotates and can drive the rack to move, the inner ring of the base is provided with an annular groove, and the buffering arc-shaped block can be inserted into the annular groove.

In a preferred embodiment, the structures of the plurality of exhaust cavities are identical, so that all the exhaust cavities are referred to as the exhaust cavities hereinafter, the exhaust cavities can communicate with the air on the upper side and the lower side of the base, exhaust sliders are slidably mounted in the exhaust cavities, pipelines capable of conducting the exhaust cavities and the air on the upper end of the upper cover plate are arranged in the exhaust sliders, the exhaust sliders can prevent the air on the lower end of the exhaust cavities from flowing into the exhaust cavities in a static state, the exhaust sliders can be pushed to move upwards when the air pressure of the air on the lower side of the exhaust cavities is increased, the exhaust sliders move upwards to expose the pipelines on the upper side, and the high-pressure air can be exhausted to the outside along the pipelines in the exhaust sliders.

In a preferred embodiment, the structures in the drainage cavities are completely the same, so all the drainage cavities are referred to as the drainage cavities hereinafter, trapezoidal fixed blocks are fixedly mounted in the drainage cavities, a support is fixedly mounted between the trapezoidal fixed blocks and the base, T-shaped blocks are slidably mounted on the support, springs are connected and mounted between the T-shaped blocks and the support, and water falling holes formed by splicing the upper cover plate and the drainage cavities are reserved at the upper ends of the drainage cavities.

In a preferred embodiment, a water wheel shaft is rotatably mounted in the drainage cavity, a water wheel and a take-up pulley are fixedly mounted on the water wheel shaft from front to back in sequence, and the water wheel can rotate under the pushing action of water flow and drive the water wheel shaft to rotate.

In a preferred embodiment, a drainage plate is rotatably mounted in the drainage cavity, a torsion spring is mounted between the base and the rotating shaft of the drainage plate in a connected mode, and in a default state, the drainage plate keeps a horizontal closing state under the torsion force of the torsion spring and the limiting effect of the lower end of the trapezoidal fixing block.

In a preferred embodiment, a wire guiding wheel is installed in the drainage cavity, a thin wire wound around the wire guiding wheel is connected and installed between the drainage plate and the wire winding wheel, the thin wire can be retracted when the wire winding wheel rotates, and the open end of the drainage plate can be driven to rotate downwards after the thin wire is retracted.

In a preferred embodiment, a second gear ring is fixedly mounted at the lower end of the base.

In a preferred embodiment, a first gear ring is fixedly mounted on the base, the first gear ring can be meshed with the second gear ring, and the first gear ring is meshed with the second gear ring, so that the friction force between the base and the base can be increased, and the base is prevented from rotating accidentally.

In a preferred embodiment, after the installation is finished, the gas and the solid at the upper end and the lower end of the base can be isolated in a default state, so that the combustible gas in the base is prevented from overflowing and exploding when encountering a fire source, and the fire source on the upper side of the base, such as firecrackers, cigarette ends and the like, can be prevented from accidentally falling into a well to detonate the combustible gas in the well.

In a preferred embodiment, the drainage and waterlogging prevention function can be normally achieved when raining, rainwater enters the drainage cavity through a water falling hole in the upper end of the drainage cavity, water can be accumulated in the upper end of the drainage plate firstly, when the rainwater flows over the trapezoidal fixing block and then flows to the upper end of the T-shaped block, the T-shaped block slides downwards under the impact of the water flow, the water flows downwards through a gap generated when the T-shaped block slides downwards and enters the inspection well to finish drainage, when the flow of the water at the overflow part is large, the water flow can push the water wheel to rotate, the water wheel can drive the take-up pulley to rotate through the water wheel shaft, the take-up pulley can drive the drainage plate to rotate and open through withdrawing a thin line, the drainage plate rotates and opens to enhance the drainage capacity, when the depth of the accumulated water above the base is deep, the drainage plate can also rotate and open downwards under the action of the water, the drain bar rotates downwards to be opened, so that the drainage capacity can be enhanced, and the garbage on the drain bar can be poured into a sewer together.

In a preferred embodiment, since a small amount of rainwater is often stored at the upper end of the drainage plate, a fire source falling into the drainage cavity through a water falling hole at the upper end of the drainage cavity can be extinguished in the first time, even if no water is left in the drainage cavity, the fire source cannot be contacted with underground gas to cause accidents, and the fire source and garbage falling through the water falling hole can be discharged into a sewer together with rainwater during raining.

In the preferred embodiment, when the unexpected explosion takes place for the base lower extreme gas, the explosion air current can promote earlier the base rebound, the base rebound drives and inserts in the base annular cushion arc piece rebound, cushion arc piece atress striking pass through behind the annular on the base the rack the gear box restriction the base continues rebound or flies out the well head and causes serious consequence, and surplus air current promotes exhaust slider rebound, exhaust slider rebound makes the air current can get into the exhaust chamber, and the air current rethread behind getting into the exhaust chamber the pipeline in the exhaust slider is discharged to the external world, reaches the step-down effect.

The invention has the beneficial effects that: the explosion-proof inspection well cover provided by the invention can realize that gas and solid at the upper end and the lower end of the inspection well cover are completely separated on the premise of not influencing the drainage function, combustible gas below the inspection well cover cannot overflow to the ground, fire sources such as firecrackers and smoke heads on a well can only fall into the drainage cavity, the drainage cavity can extinguish the fire sources by utilizing accumulated water, if the underground gas is accidentally exploded, the arc-shaped buffer block can pull the inspection well cover to prevent the inspection well cover from flying out under the action of explosive gas flow, and the pressure relief device can discharge the residual gas flow to protect the inspection well cover body.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic view of the overall structure of an explosion-proof inspection well cover of the invention.

Fig. 2 is a schematic view of the structure a-a in fig. 1.

Fig. 3 is an enlarged schematic view of B in fig. 1.

Fig. 4 is an enlarged schematic view of C in fig. 3.

Detailed Description

The invention will now be described in detail with reference to fig. 1-4, wherein for ease of description the orientations described hereinafter are now defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

Combine 1-4 an explosion-proof inspection shaft lid, including base 10, base 11, base 10 upper end fixed mounting has upper cover plate 19, base 10 lower extreme fixed mounting has gear box 15, upper cover plate 19 with contain a plurality of exhaust chamber 17 and drainage chamber 20 between the base 10, gear box 15 internal rotation is installed and is passed base 10 in proper order upper cover plate 19's gear shaft 16, gear shaft 16 upper end is equipped with the hexagon recess, can drive through the instrument of corresponding shape and groove engagement the gear shaft 16 rotates, gear shaft 16 lower extreme fixed mounting has gear 14, install in the gear box 15 and use the dot of gear shaft 16 is two rack 13 of central point central symmetry, two rack 13 fixed mounting has buffering arc piece 12 on keeping away from the outer end of gear shaft 16 one side, the gear 14 rotates and can drive the rack 13 to move, the inner ring of the base 11 is provided with an annular groove, and the buffer arc-shaped block 12 can be inserted into the annular groove.

The structures of the plurality of exhaust cavities 17 are completely the same, so the exhaust cavities 17 are all referred to as the exhaust cavities 17, the exhaust cavities 17 can communicate with the air on the upper side and the lower side of the base 10, exhaust sliders 18 are slidably mounted in the exhaust cavities 17, pipelines capable of communicating the exhaust cavities 17 with the air on the upper end of the upper cover plate 19 are arranged in the exhaust sliders 18, the exhaust sliders 18 can prevent the air on the lower end of the exhaust cavities 17 from flowing into the exhaust cavities 17 in a static state, when the air pressure of the air on the lower side of the exhaust cavities 17 is increased, the exhaust sliders 18 can be pushed to move upwards, the exhaust sliders 18 move upwards to expose the pipelines on the upper side, and the high-pressure air can be exhausted to the outside along the pipelines in the exhaust sliders 18.

A plurality of the structure in the drainage chamber 20 is identical, so all with the drainage chamber 20 refers to all the drainage chamber 20, fixed mounting has trapezoidal fixed block 24 in the drainage chamber 20, trapezoidal fixed block 24 with fixed mounting has support 22 between the base 10, slidable mounting has T type piece 23 on the support 22, T type piece 23 with connect between the support 22 and install spring 21, drainage chamber 20 upper end is left upper cover plate 19 with the hole that falls into water that forms is spliced between the drainage chamber 20.

A water wheel shaft 30 is rotatably mounted in the drainage cavity 20, a water wheel 29 and a take-up pulley 28 are fixedly mounted on the water wheel shaft 30 from front to back in sequence, and the water wheel 29 can rotate under the pushing action of water flow and drives the water wheel shaft 30 to rotate.

The drain bar 25 is installed to the rotation in drainage chamber 20, the pivot of drain bar 25 in connect between the base 10 and install the torsional spring, and under the default condition, the drain bar 25 at the torsion of torsional spring with the limiting displacement of 24 lower extremes of trapezoidal fixed blocks keeps the level closed condition down.

Install wire wheel 31 in the drainage chamber 20, drain bar 25 with connect between take-up pulley 28 and install and walk around wire wheel 31's fine rule 32, can when take-up pulley 28 rotates with fine rule 32 withdraws, fine rule 32 withdraws the back and can drive drain bar 25 open end downwardly rotating.

A second gear ring 27 is fixedly mounted at the lower end of the base 10.

The base 11 is fixedly provided with a first gear ring 26, the first gear ring 26 can be meshed with the second gear ring 27, the first gear ring 26 is meshed with the second gear ring 27, so that the friction force between the base 10 and the base 11 can be increased, and the base 10 is prevented from rotating accidentally.

When the installation device is installed, the base 11 needs to be fixed in a reserved foundation pit, the outer ring of the base 10 is aligned with the inner ring of the base 11 and then placed, the first gear ring 26 and the second gear ring 27 can be automatically meshed and aligned, an inner hexagonal wrench is inserted into a groove at the upper end of the gear shaft 16 and rotates, the gear shaft 16 rotates to drive the two racks 13 to extend outwards through the gear 14, the racks 13 extend to drive the buffer arc-shaped block 12 to be inserted into an annular groove on the base 11 and abut against an annular groove side arm, and the installation work is completed.

After the installation of the invention is finished, the gas and the solid at the upper end and the lower end of the base 10 can be isolated in a default state, the combustible gas in the base 10 is prevented from overflowing and exploding when encountering a fire source, and the fire source at the upper side of the base 10, such as firecrackers, cigarette ends and the like, can be prevented from accidentally falling into the well to detonate the combustible gas in the well.

In one embodiment, during raining, the present invention can normally perform the functions of drainage and waterlogging prevention, rainwater enters the drainage cavity 20 through the water falling hole at the upper end of the drainage cavity 20, water is accumulated at the upper end of the drainage plate 25, when the water flows over the trapezoidal fixing block 24 and then flows to the upper end of the T-shaped block 23, the T-shaped block 23 slides downwards under the impact of the water flow, the water flows downwards through the gap generated when the water flows downwards through the T-shaped block 23 and enters the inspection well to complete drainage, when the flow rate of the water at the overflow is large, the water flow can push the water wheel 29 to rotate, the water wheel 29 can drive the take-up wheel 28 to rotate through the water wheel shaft 30, the take-up wheel 28 can drive the drainage plate 25 to rotate and open through withdrawing the fine wire 32, the drainage plate 25 rotates and opens to enhance the drainage capability, when the depth of the accumulated water above the base 10 is deep, the drainage plate 25 can also rotate and open downwards under the action of the, the drain plate 25 is rotated downwards to be opened, so that the drainage capacity can be enhanced, and the garbage on the drain plate 25 can be poured into a sewer together.

Because the upper end of the drainage plate 25 often stores a small amount of rainwater, the fire source falling into the drainage cavity 20 through the water falling hole at the upper end of the drainage cavity 20 can be extinguished at the first time, even if no accumulated water remains in the drainage cavity 20, the fire source cannot be contacted with underground gas to cause accidents, and the fire source and garbage falling into the drainage cavity through the water falling hole can be drained into a sewer together with rainwater in the rainy days.

In another embodiment, when the gas at the lower end of the base 10 is exploded accidentally, the explosion airflow pushes the base 10 to move upwards, the base 10 moves upwards to drive the buffer arc-shaped block 12 inserted in the annular groove of the base 11 to move upwards, the buffer arc-shaped block 12 is stressed to impact the annular groove on the base 11 and then is limited by the rack 13 and the gear box 15 to continue to move upwards or fly out of the wellhead, so that serious consequences are caused, the residual airflow pushes the exhaust slider 18 to move upwards, the exhaust slider 18 moves upwards to enable the airflow to enter the exhaust cavity 17, and the airflow enters the exhaust cavity 17 and then is exhausted to the outside through the pipeline in the exhaust slider 18, so that the pressure reduction effect is achieved.

The embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims (8)

1. The utility model provides an explosion-proof inspection shaft lid, includes base (10), base (11), base (10) upper end fixed mounting has upper cover plate (19), base (10) lower extreme fixed mounting has gear box (15), upper cover plate (19) with contain a plurality of exhaust chamber (17) and drainage chamber (20) between base (10), exhaust chamber (17) can be with gaseous exhaust when gaseous pressure is great in the pit, drainage chamber (20) can separate the fire source or rubbish on the well with gaseous in the pit, together discharge the sewer with the rubbish of intracavity when the drainage, gear box (15) internal rotation is installed and is passed in proper order base (10) gear shaft (16) of upper cover plate (19), gear shaft (16) upper end is equipped with the hexagon recess, gear shaft (16) lower extreme fixed mounting has gear (14), install in gear box (15) with the dot of gear shaft (16) is two centrosymmetric round points The gear rack is characterized by comprising a rack (13), wherein the two racks (13) are fixedly provided with a buffering arc-shaped block (12) on the outer end of one side of the gear shaft (16) according to the principle.

2. The explosion-proof inspection well cover as set forth in claim 1, characterized in that: the structures in the plurality of exhaust cavities (17) are completely the same, so that the exhaust cavities (17) are all used for referring to the exhaust cavities (17), exhaust sliding blocks (18) are arranged in the exhaust cavities (17) in a sliding mode, and pipelines capable of conducting air at the upper ends of the exhaust cavities (17) and the upper cover plate (19) are arranged in the exhaust sliding blocks (18).

3. The explosion-proof inspection well cover as set forth in claim 1, characterized in that: a plurality of the structure in drainage chamber (20) is the same completely, so the following all with drainage chamber (20) refers to all drainage chamber (20), drainage chamber (20) internal fixed mounting has trapezoidal fixed block (24), trapezoidal fixed block (24) with fixed mounting has support (22) between base (10), slidable mounting has T type piece (23) on support (22), T type piece (23) with connect between support (22) and install spring (21), drainage chamber (20) upper end is left upper cover plate (19) with the hole of falling into water that the concatenation formed between drainage chamber (20).

4. The explosion-proof inspection well cover as set forth in claim 1, characterized in that: a water wheel shaft (30) is rotatably mounted in the drainage cavity (20), a water wheel (29) and a take-up pulley (28) are fixedly mounted on the water wheel shaft (30) from front to back in sequence, and the water wheel (29) can rotate under the pushing action of water flow and drives the water wheel shaft (30) to rotate.

5. The explosion-proof inspection well cover as set forth in claim 4, characterized in that: drain bar (25) are installed to drainage chamber (20) internal rotation, the pivot of drain bar (25) in connect between base (10) and install the torsional spring.

6. The explosion-proof inspection well cover as set forth in claim 5, characterized in that: install wire wheel (31) in drainage chamber (20), drain bar (25) with connect between take-up pulley (28) and install and walk around fine rule (32) of wire wheel (31).

7. The explosion-proof inspection well cover as set forth in claim 1, characterized in that: and a second gear ring (27) is fixedly mounted at the lower end of the base (10).

8. The explosion-proof inspection well cover of claim 7, wherein: a first gear ring (26) is fixedly mounted on the base (11), and the first gear ring (26) can be meshed with the second gear ring (27).

Images