Novel high-molecular polymer intelligent well lid with safety monitoring function

Abstract

The invention discloses a novel high-molecular polymer intelligent well lid with a safety monitoring function, and relates to the technical field of well lids, the novel high-molecular polymer intelligent well lid comprises a lid body, a cover plate is fixedly mounted at the top of the lid body, the novel high-molecular polymer intelligent well lid further comprises a pressure relief mechanism, the pressure relief mechanism comprises a bottom cylinder penetrating through the lid body and fixed to the lid body, and an exhaust assembly is arranged in the bottom cylinder; a top cylinder is fixedly connected to the lower portion of the cover plate, an impeller is rotationally connected between the bottom cylinder and the top cylinder, a gas conveying pipe is fixedly connected to the top cylinder, the top cylinder is communicated with the gas conveying pipe through a gas outlet hole, external air can be sucked into the sewage sewer through blades, and the concentration of biogas in the sewer is reduced; therefore, the concentration of the biogas discharged through the well lid is reduced, the safety problem caused by a fire source around the well lid is avoided, the oxygen content in a sewer can be increased through air suction, the growth environment of anaerobic microorganisms is destroyed, the metabolic rate of the anaerobic microorganisms is reduced, the generation speed of the biogas is restrained, and the risk of safety accidents caused by the biogas is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of manhole covers, and in particular to a novel high molecular polymer intelligent manhole cover with a safety monitoring function. Background Art

[0002] Manhole covers are used to cover roads or deep wells to prevent people or objects from falling. They can be divided into many types according to the material, such as metal manhole covers, steel fiber cement concrete manhole covers and polymer manhole covers. Among them, polymer manhole covers are made by high-temperature die-casting of polymers and supported by steel mesh inside. They have the characteristics of light weight and high load-bearing strength and are widely used.

[0003] At the same time, with the continuous advancement of science and technology, emerging technologies such as sensor technology, wireless communication technology, and Internet of Things technology have been developed. Associating the above technologies with manhole covers can make manhole covers intelligent. Through smart manhole covers, the status of manhole covers can be monitored in real time, safety hazards can be discovered and dealt with in a timely manner, and accidents such as manhole cover theft and people falling can be effectively prevented, thereby improving the safety level of the city.

[0004] In sewage sewers, due to the low oxygen content and the presence of various organic matter, anaerobic microorganisms are prone to multiply in large numbers. Some anaerobic microorganisms will decompose organic matter into biogas, increasing the air pressure in the sewer. In order to prevent the danger of excessive air pressure in the sewer, a one-way valve is provided on the existing sewage manhole cover to discharge the biogas after the biogas pressure increases and prevent external fire sources from entering the sewer to ignite the biogas. However, when the biogas is sprayed out from the one-way valve of the manhole cover, it is difficult to quickly mix with the air to reduce the concentration of the biogas airflow. If there is a fire source around the manhole cover, the high-concentration biogas will come into contact with the fire source, which will cause a fire hazard and endanger the surrounding environment and people. Therefore, a new type of high-molecular polymer smart manhole cover with safety monitoring function is urgently needed. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that when biogas is sprayed out from the one-way valve of the manhole cover, it is difficult to quickly mix with air to reduce the concentration of the biogas airflow. If there is a fire source around the manhole cover, the high-concentration biogas will come into contact with the fire source, which will cause a fire hazard. A new type of high-molecular polymer intelligent manhole cover with safety monitoring function is proposed.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technology: a new type of polymer intelligent manhole cover with safety monitoring function: comprising a cover body, a cover plate is fixedly installed on the top of the cover body, and also comprising:

[0007] A pressure relief mechanism, the pressure relief mechanism comprising a bottom cylinder penetrating the cover body and being fixed thereto, a gap being provided between the cover body and the outer wall of the bottom cylinder, an exhaust assembly being arranged inside the bottom cylinder, a top cylinder being fixedly connected below the cover plate, an impeller being rotatably connected between the bottom cylinder and the top cylinder, an air pipe being fixedly connected to the top cylinder and being communicated with the air pipe through an air outlet, and a warning whistle being installed inside the air pipe;

[0008] The ventilation mechanism comprises blades fixedly mounted on the outer wall of the impeller, a gas delivery cylinder located outside the blades is fixedly connected between the cover body and the cover plate, a sealing ring is slidably connected to the outside of the bottom cylinder, and a spring is arranged between the sealing ring and the cover body;

[0009] When the air pressure in the sewer increases, the exhaust component opens under pressure, and the biogas flow passes through the exhaust component and pushes the impeller to rotate, so that the impeller drives the blades to rotate and suck the outside air into the sewer. The rotation of the impeller fully mixes the air and biogas.

[0010] As a further description of the new type of high molecular polymer smart manhole cover with a safety monitoring function of the above technology: the exhaust component includes a magnet a and a sealing ring fixed inside the bottom cylinder, the inside of the bottom cylinder is slidably connected with a magnet b, the top of the magnet b is fixedly installed with a mounting frame, the top of the mounting frame passes through the sealing ring and is fixedly connected with a sealing plate.

[0011] As a further description of the new type of high molecular polymer smart manhole cover with a safety monitoring function of the above technology: a baffle is fixedly connected to the top of the impeller, the baffle is located at the same height as the air outlet and the width of the baffle is smaller than the air outlet.

[0012] As a further description of the new type of high molecular polymer intelligent manhole cover with a safety monitoring function of the above technology: the bottom of the cover body is fixedly connected to a cover body and a reinforcement plate, and an air cavity connected to the cover body is opened inside the reinforcement plate.

[0013] A further description of the novel high molecular polymer intelligent manhole cover as a safety monitoring function of the above technology: the cover body is provided with an air outlet connected to a warning whistle, and the top end of the air outlet is inclined away from the center point of the cover body.

[0014] As a further description of the new type of high molecular polymer intelligent manhole cover with a safety monitoring function of the above technology: a filter a is arranged on the top of the air outlet, and a filter b is arranged between the top cylinder and the air delivery cylinder.

[0015] A further description of the new polymer smart manhole cover as a safety monitoring function of the above technology: it also includes a shielding component covering the air outlet and the filter b respectively, and the shielding component includes an outer shell fixed to the cover plate, and the outer shell is a truncated cone with grooves opened around it.

[0016] As a further description of the new type of high molecular polymer intelligent manhole cover with a safety monitoring function of the above technology: an inclined block is fixedly connected to the groove of the outer shell, and the thickness of the inclined block is less than the height of the groove.

[0017] As a further description of the new type of high molecular polymer intelligent manhole cover with a safety monitoring function of the above technology: the top surface of the blade is in contact with the bottom surface of the filter screen b.

[0018] In summary, due to the use of the above-mentioned technology, a new type of polymer intelligent manhole cover with safety monitoring function has the following beneficial effects:

[0019] The blades can draw outside air into the sewage sewer, reduce the concentration of biogas in the sewer, and thus reduce the concentration of biogas when it is discharged through the manhole cover, avoiding safety problems caused by fire sources around the manhole cover. In addition, the intake of air can increase the oxygen content in the sewer, destroy the growth environment of anaerobic microorganisms, reduce the metabolic rate of anaerobic microorganisms, curb the speed of biogas production, and reduce the risk of safety accidents caused by biogas. In addition, the discharged biogas is diverted through multiple air outlets, so that the biogas can be dispersed and discharged from multiple different locations, expanding the total discharge area and accelerating the dilution rate of biogas after discharge, thereby further reducing the danger of biogas discharge and improving the safety of the manhole cover.

[0020] The impeller rotates with the impact of the biogas and can fully mix the biogas with the inhaled air, intelligently reduce the biogas concentration and ensure the uniformity of the biogas, reduce the risk of excessive local concentration of biogas when discharged, and further improve the safety performance of the device;

[0021] During the discharge process, the biogas passes through the warning whistle and emits a warning sound, reminding people around to stay away from the manhole cover, reducing the probability of fire sources approaching the manhole cover when the biogas is discharged, thereby preventing the danger of fire. The baffle periodically blocks the biogas from passing through the vent hole, so that the biogas does not continuously pass through the warning whistle, improving the recognition of the warning sound, and making people around stay away from the manhole cover;

[0022] The air sucked into the sewer is diverted through multiple air cavities, which helps to fully mix the air and biogas and reduce the biogas concentration. The bottom of the air cavity is far away from the bottom tube, so that the air will not be directly discharged through the bottom tube with the biogas after being sucked into the sewer, thereby ensuring the effect of reducing the biogas concentration by sucking in air.

[0023] When magnet b and magnet a are attached to each other, the magnetic fields of the two magnets have the same direction and are superimposed and enhanced. The mutual enhancement of the magnetic fields greatly increases the suction force. After the two magnets are separated, the mutual suction force will be significantly reduced. Therefore, after the biogas pressure separates the two magnets, the force required to maintain the separation of the two magnets is significantly reduced. This design allows the biogas to be continuously discharged after the sewer pressure separates magnet b and magnet a, until the internal pressure of the sewer can no longer keep the two magnets separated, avoiding the biogas to be gradually discharged in small amounts for a long time after reaching the pressure requirement, so that the biogas flow dynamics can be utilized, saving energy while shortening the biogas discharge time, thereby reducing the probability of biogas discharge encountering a fire source and improving safety;

[0024] The rotation of the blades can scrape the bottom of the filter b, push out the impurities embedded in the holes of the filter b, ensure the smooth flow of the filter b, and prevent the filter b from being blocked and causing the outside air to be unable to enter the sewer smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It shows an overall top schematic diagram provided according to an embodiment of the present invention;

[0026] Figure 2 It shows an overall bottom schematic diagram provided according to an embodiment of the present invention;

[0027] Figure 3 It shows an overall explosion schematic diagram provided according to an embodiment of the present invention;

[0028] Figure 4 An overall cross-sectional schematic diagram provided according to an embodiment of the present invention is shown;

[0029] Figure 5 The embodiment of the present invention provides Figure 4 The enlarged schematic diagram at A in the middle;

[0030] Figure 6 The embodiment of the present invention provides Figure 4 The enlarged schematic diagram of point B in the middle;

[0031] Figure 7 A schematic diagram of an exhaust assembly provided according to an embodiment of the present invention is shown;

[0032] Figure 8 A schematic diagram of the airflow direction provided according to an embodiment of the present invention is shown.

[0033] Legend:

[0034] 10. Cover body; 11. Cover plate;

[0035] 20. Pressure relief mechanism; 21. Bottom cylinder; 22. Exhaust assembly; 221. Magnet a; 222. Magnet b; 223. Mounting frame; 224. Sealing plate; 225. Sealing ring; 23. Top cylinder; 24. Impeller; 25. Baffle; 26. Air outlet; 27. Air pipe; 28. Warning whistle; 29. ​​Air outlet nozzle; 210. Filter a;

[0036] 30. Ventilation mechanism; 31. Blades; 32. Air delivery cylinder; 33. Cover; 34. Spring; 35. Sealing ring; 36. Reinforcement plate; 37. Air cavity; 38. Filter b;

[0037] 40. Shielding assembly; 41. Outer shell; 42. Inclined block. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technology in the embodiments of the present invention, a new type of polymer smart manhole cover with a safety monitoring function. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] like Figure 1-Figure 8 As shown, the present invention provides: a novel polymer intelligent manhole cover with a safety monitoring function: comprising a cover body 10, a cover plate 11 is fixedly installed on the top of the cover body 10, and also includes:

[0040] The pressure relief mechanism 20 includes a bottom cylinder 21 that penetrates the cover body 10 and is fixed thereto, there is a gap between the cover body 10 and the outer wall of the bottom cylinder 21, an exhaust assembly 22 is arranged inside the bottom cylinder 21, a top cylinder 23 is fixedly connected below the cover plate 11, an impeller 24 is rotatably connected between the bottom cylinder 21 and the top cylinder 23, an air pipe 27 is fixedly connected to the top cylinder 23 and is communicated with the air pipe 27 through an air outlet 26, and a warning whistle 28 is installed inside the air pipe 27;

[0041] The ventilation mechanism 30 has blades 31 fixedly mounted on the outer wall of the impeller 24, and a gas cylinder 32 located outside the blades 31 is fixedly connected between the cover body 10 and the cover plate 11. A sealing ring 35 is slidably connected to the outside of the bottom cylinder 21, and a spring 34 is provided between the sealing ring 35 and the cover body 33. The sealing ring 35 is used to seal the air cavity 37 to prevent the biogas from being discharged directly through the air cavity 37 and the gas cylinder 32;

[0042] When the air pressure in the sewer increases, the exhaust component 22 opens under pressure, and the biogas flow passes through the exhaust component 22 and drives the impeller 24 to rotate, so that the device can be driven by the thrust of the biogas. The impeller 24 can also stir the biogas when rotating to fully mix the biogas, so as to avoid the danger caused by excessive local concentration of biogas during discharge. The impeller 24 drives the blades 31 to rotate to suck the outside air into the sewer, which not only reduces the biogas concentration in the sewer, but also increases the oxygen concentration in the sewer, destroying the growth environment of anaerobic microorganisms that produce biogas, and curbing the production rate of biogas. After the air is sucked into the sewer and enters the bottom tube 21 together with the biogas, the rotation of the impeller 24 can also fully mix the air and biogas, thereby reducing the overall concentration of biogas discharge.

[0043] Reference Figure 7 The exhaust component 22 includes a magnet a221 and a sealing ring 225 fixed inside the bottom cylinder 21. The bottom cylinder 21 is slidably connected with a magnet b222. A mounting bracket 223 is fixedly installed on the top of the magnet b222. The top of the mounting bracket 223 passes through the sealing ring 225 and is fixedly connected with a sealing plate 224. The magnet a221 and the magnet b222 attract each other. When the magnet a221 and the magnet b222 are in a state of being fitted and adsorbed, the sealing plate 224 is pressed on the sealing ring 225, and the two are in a sealed state. When the magnet b222 and the magnet a221 are in a state of being fitted and adsorbed, the magnetic fields of the two magnets have the same direction and are superimposed and enhanced on each other. The mutual enhancement of the magnetic fields greatly increases the suction force. After the two magnets are separated, although there is still magnetic attraction, the interaction of the magnetic fields becomes complicated. Due to the increase in distance, the direction and intensity of the magnetic field will change, resulting in mutual interference, which weakens the effect of the magnetic field and significantly reduces the suction force.

[0044] Reference Figure 6 A baffle 25 is fixedly connected to the top of the impeller 24. The baffle 25 is located at the same height as the air outlet 26 and its width is smaller than the air outlet 26. The impeller 24 drives the baffle 25 to rotate during rotation, so that the baffle 25 periodically blocks the air outlet 26, hindering the flow of air, so that the airflow discontinuously passes through the warning whistle 28, prompting people around to stay away.

[0045] Reference Figure 2 The bottom of the cover body 10 is fixedly connected with a cover body 33 and a reinforcement plate 36. An air cavity 37 connected to the cover body 33 is opened inside the reinforcement plate 36. The bottom of the air cavity 37 is inclined and away from the bottom tube 21 to prevent the air from being directly discharged through the bottom tube 21 with the biogas after being sucked into the sewer, thereby ensuring the effect of reducing the biogas concentration by inhaling air.

[0046] Reference Figure 4An air outlet nozzle 29 connected to the warning whistle 28 is provided on the cover body 10, and the top of the air outlet nozzle 29 is inclined away from the center point of the cover body 10. A plurality of air outlet nozzles 29 are provided so that the biogas can be discharged in a dispersed manner, and the biogas concentration can be quickly reduced, thereby reducing the possibility of the biogas reaching the explosion limit and improving the safety of biogas discharge. In addition, the inclined design of the air outlet nozzle 29 can control the discharge direction of the biogas, so that each biogas is discharged in a scattered manner, avoiding direct mixing of the biogas airflow and difficulty in dispersion.

[0047] Reference Figure 4 and Figure 7 A filter a210 is arranged on the top of the air outlet nozzle 29, and a filter b38 is arranged between the top tube 23 and the air delivery cylinder 32. The filter a210 and the filter b38 can prevent external ground impurities from being blown by wind and human influence, and small-volume debris from clogging the internal airway of the manhole cover, thereby extending the continuous use time of the manhole cover.

[0048] Reference Figure 3 and Figure 4 , and also includes a shielding component 40 covering the air outlet nozzle 29 and the filter b38 respectively. The shielding component 40 includes an outer shell 41 fixed to the cover plate 11. The outer shell 41 is truncated cone-shaped and has slots on all sides. The multiple slots can effectively prevent the outer shell 41 from being completely blocked, ensuring that the airflow can circulate normally. Under the shielding of the outer shell 41, the airway of the manhole cover is difficult to be directly covered by large-volume debris from the outside and cause blockage.

[0049] Reference Figure 5 An inclined block 42 is fixedly connected to the slot of the outer shell 41. The thickness of the inclined block 42 is less than the height of the slot. Air can enter the manhole cover through the slot not blocked by the inclined block 42. At the same time, the inclined surface of the inclined block 42 can block rainwater and prevent water from flowing back into the airway of the manhole cover during rainy weather, thereby ensuring the use effect of the manhole cover.

[0050] Reference Figure 7 The top surface of the blade 31 contacts the bottom surface of the filter screen b38. During the rotation process, the blade 31 can push out the impurities embedded in the holes of the filter screen b38, ensuring the smoothness of the filter screen b38, thereby preventing the filter screen b38 from being blocked and affecting the air intake effect.

[0051] Working principle: In the initial state, magnet a221 and magnet b222 are in a close adsorption state, the sealing plate 224 and the sealing ring 225 are sealed, the sealing ring 35 closes the air cavity 37, the manhole cover isolates the sewer from the outside world, and the methane inside the sewer will not be discharged to the outside world;

[0052] After the biogas pressure inside the sewer increases, the air pressure pushes the sealing plate 224 to move upward to separate the magnet b222 and the magnet a221. At this time, a space for air flow is generated between the sealing plate 224 and the sealing ring 225. The biogas inside the sewer enters the bottom tube 21 and flows upward through the sealing plate 224 and the sealing ring 225, impacting the impeller 24 to drive the impeller 24 to rotate. Then, the biogas airflow is discharged to the outside through the air outlet 26, the air pipe 27 and the air outlet nozzle 29. In this process, the biogas airflow passes through the warning whistle 28 to emit a warning sound, and the baffle 25 covers the air outlet 26 as the impeller 24 rotates, so that the airflow passes through the warning whistle 28 discontinuously, thereby improving the warning effect.

[0053] The rotation of the impeller 24 also drives the blades 31 to rotate. The rotation of the blades 31 draws the outside air into the gas cylinder 32 through the notch of the outer shell 41 through negative pressure. Then the airflow enters the cover body 33 through the gap between the bottom cylinder 21 and the cover body 10 and impacts the sealing ring 35. The sealing ring 35 moves downward under the thrust of the airflow to open the air cavity 37, so that the air enters the sewer through the air cavity 37, thereby increasing the oxygen content in the sewer and reducing the biogas concentration.

[0054] The above description is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can, within the technical scope disclosed by the present invention, make equivalent replacements or changes to a new type of polymer smart manhole cover with a safety monitoring function and its inventive concept according to the technology of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A novel polymer intelligent manhole cover with safety monitoring function, comprising a cover body (10), a cover plate (11) being fixedly mounted on the top of the cover body (10), characterized in that: Also includes: A pressure relief mechanism (20), the pressure relief mechanism (20) comprising a bottom tube (21) penetrating the cover body (10) and fixed thereto, a gap between the cover body (10) and the outer wall of the bottom tube (21), an exhaust assembly (22) being arranged inside the bottom tube (21), a top tube (23) being fixedly connected below the cover plate (11), an impeller (24) being rotatably connected between the bottom tube (21) and the top tube (23), an air delivery pipe (27) being fixedly connected to the top tube (23) and communicating with the air delivery pipe (27) through an air outlet (26), and a warning whistle (28) being installed inside the air delivery pipe (27); A ventilation mechanism (30), wherein the outer wall of the impeller (24) is fixedly equipped with blades (31), an air delivery cylinder (32) located outside the blades (31) is fixedly connected between the cover body (10) and the cover plate (11), a sealing ring (35) is slidably connected to the outside of the bottom cylinder (21), and a spring (34) is provided between the sealing ring (35) and the cover body (33); When the air pressure in the sewer increases, the exhaust component (22) opens under pressure, and the biogas flow passes through the exhaust component (22) and pushes the impeller (24) to rotate, so that the impeller (24) drives the blades (31) to rotate and suck the outside air into the sewer. The impeller (24) rotates to fully mix the air and the biogas.

2. According to claim 1, a novel polymer intelligent manhole cover with safety monitoring function is characterized in that: The exhaust assembly (22) comprises a magnet a (221) and a sealing ring (225) fixed inside a bottom cylinder (21); a magnet b (222) is slidably connected inside the bottom cylinder (21); a mounting frame (223) is fixedly mounted on the top of the magnet b (222); the top of the mounting frame (223) passes through the sealing ring (225) and is fixedly connected to a sealing plate (224).

3. The novel polymer intelligent manhole cover with safety monitoring function according to claim 1 is characterized in that: A baffle (25) is fixedly connected to the top of the impeller (24); the baffle (25) is located at the same height as the air outlet (26) and the width of the baffle (25) is smaller than the air outlet (26).

4. The novel polymer intelligent manhole cover with safety monitoring function according to claim 1 is characterized in that: The bottom of the cover body (10) is fixedly connected with a cover body (33) and a reinforcing plate (36), and an air cavity (37) communicating with the cover body (33) is provided inside the reinforcing plate (36).

5. The novel polymer intelligent manhole cover with safety monitoring function according to claim 1 is characterized in that: The cover body (10) is provided with an air outlet nozzle (29) which is in communication with the warning whistle (28), and the top end of the air outlet nozzle (29) is inclined in a direction away from the center point of the cover body (10).

6. The novel polymer intelligent manhole cover with safety monitoring function according to claim 5 is characterized in that: A filter screen a (210) is provided at the top of the gas outlet nozzle (29), and a filter screen b (38) is provided between the top cylinder (23) and the gas delivery cylinder (32).

7. The novel polymer intelligent manhole cover with safety monitoring function according to claim 6 is characterized in that: It also includes a shielding assembly (40) covering the air outlet nozzle (29) and the filter screen b (38) respectively, wherein the shielding assembly (40) includes an outer shell (41) fixed to the cover plate (11), and the outer shell (41) is truncated cone-shaped and has slots formed around its periphery.

8. The novel polymer smart manhole cover with safety monitoring function according to claim 7 is characterized in that: An inclined block (42) is fixedly connected in the notch of the outer shell (41), and the thickness of the inclined block (42) is smaller than the height of the notch.

9. The novel polymer intelligent manhole cover with safety monitoring function according to claim 6 is characterized in that: The top surface of the blade (31) contacts the bottom surface of the filter screen b (38).

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