Safe and efficient conveying device for low-concentration gas

Abstract

The invention belongs to the related technical field of gas conveying, and particularly discloses a safe and efficient low-concentration gas conveying device which comprises a conveying tank, a connecting mechanism is arranged at the front end of a gas inlet of the conveying tank, the connecting mechanism further comprises two gas inlet pipes and flange connecting pipes, and flange connecting seats are arranged at the two ends of the two gas inlet pipes; the two air inlet pipes are installed at the two ends of the flange connecting pipe through the flange connecting bases on the sides close to each other, one air inlet pipe communicates with an air inlet, a T-shaped pipe is arranged in the flange connecting pipe, and chip shoveling mechanisms are arranged on the inner surfaces of the two air inlet pipes correspondingly. And the problems of pipeline blockage and corrosion caused by impurities and water in the low-concentration gas conveying process are effectively solved. The device has the advantages of efficient cleaning, automatic maintenance, quick overhaul and the like, and is suitable for gas conveying in the fields of mines, chemical engineering and the like.

Description

Technical Field

[0001] The present invention belongs to the technical field related to gas transportation, and specifically discloses a safe and efficient low-concentration gas transportation device. Background Art

[0002] Gas conveying equipment is a specialized equipment system used to safely and efficiently transport gas (typically combustible gases such as natural gas, coalbed methane, or liquefied petroleum gas). Its core function is to ensure the stability and safety of gas transportation and avoid the risk of leakage or explosion. Currently, over 80% of existing mine gas extraction is from goafs or mining pressure relief areas. Of this, over 70% has a concentration below 30%, falling within the low-concentration gas extraction range (gas concentration less than 30%). A significant portion even has a concentration below 20%. During the transportation of this low-concentration gas, due to the presence of small amounts of water in the gas, the interior of the conveying pipe can become clogged due to corrosion or impurity accumulation after prolonged use, impacting transportation efficiency. This requires special attention and, therefore, improvements are needed. Summary of the Invention

[0003] The purpose of the present invention is to solve the problems existing in the background technology, and to propose a safe and efficient low-concentration gas transportation device, including a transportation tank, a connecting mechanism is provided at the front end of the air inlet of the transportation tank, and the connecting mechanism also includes two air inlet pipes and a flange connecting pipe, and flange connecting seats are provided at both ends of the two air inlet pipes. The two air inlet pipes are installed at both ends of the flange connecting pipes through flange connecting seats on a side close to each other, one of the air inlet pipes is connected to the air inlet, a T-shaped pipe is provided inside the flange connecting pipe, and a chip shoveling mechanism is provided on the inner surface of the two air inlet pipes. The inner edges on both sides of the flange connecting pipe are sloped, and an air outlet pipe is installed on the upper part of the interior of the end of the transportation tank away from the air inlet pipe.

[0004] The cam is secured to the outside of the frame by a spring, and the two ends of the spring are connected to each other with a lever, having one end in pinned connection to the bottom of the frame and the other end in pinned connection to the top of the frame.

[0005] Preferably, the rotating mechanism includes a bevel gear fixedly arranged on the outside of the rotating frame, a helical gear is arranged above the bevel gear, and a driving member is arranged inside the helical gear.

[0006] Preferably, the driving member includes a rotating shaft fixedly inserted in the middle of the helical gear, a casing is rotatably mounted on the outside of the rotating shaft, the casing is embedded in the upper part of the air intake pipe, a motor is provided on the outside of the casing, and the motor output shaft is connected to one end of the rotating shaft.

[0007] Preferably, the pull rope extends to the inside of the T-shaped tube at one end away from the rotating seat, and pulleys are symmetrically provided at both ends of the inside of the T-shaped tube. The pull rope passes through between the two sets of pulleys and extends upward to the T-shaped tube. A fixed wire assembly is provided inside the T-shaped tube and close to the outside of the pull rope.

[0008] Preferably, the line fixing assembly includes a clamping block fixedly arranged inside the T-shaped tube, and a casing is arranged inside the clamping block and close to the outside of the pull rope.

[0009] Preferably, a stretching frame is installed on one end of the two pull ropes away from the T-shaped tube. A connecting rod is provided on the outside of the stretching frame. A hydraulic cylinder is provided at the lower end of the connecting rod. The outside of the hydraulic cylinder is fixed to the outer wall of the flange connection pipe through a support seat.

[0010] Preferably, outer frames are slidably installed at both ends of the outer wall of the T-shaped tube, and slots are opened at the lower inside of the two groups of outer frames, filter membranes are installed inside the two groups of outer frames, and elastic rods are installed above the outer walls on the side close to each other of the two groups of outer frames. Movable cylinders are provided on both sides of the outer wall of the T-shaped tube and close to the elastic rods. The elastic rods and the movable cylinders are slidably fitted together, a drainage pipe is installed in the middle of the inner part of the flange connecting pipe, and a plug is threadedly connected to the lower outside of the drainage pipe, and a clamping ring is sleeved on both sides of the outer wall of the T-shaped tube and at one end away from the movable cylinder, and the outer frame and the clamping ring are movably opposed to each other.

[0011] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting flange connection seats at both ends of the air inlet pipe, it can be quickly connected with the air inlet of the conveying tank, the flange connection pipe, and the external connecting pipe. Not only can the two air inlet pipes be connected to the flange connection pipe, but also can be connected to the external gas delivery pipeline, which is also convenient for later maintenance.

[0012] 2. Through the chip shoveling mechanism, under the pull of the hydraulic cylinder, the pull rope will pull the rotating frame inside the intake pipe, prompting the rotating frame and the shovel plate extending from the inside of the rotating frame to clean the impurities and rust inside the intake pipe, and scrape the impurities to the discharge pipe at the flange connection pipe, so that the impurities are automatically discharged. The shovel plate can be attached to the slope of the flange connection pipe through the pressure plate, support column, second spring and rotating rod arranged above, and the angle of the shovel plate can be flexibly adjusted to ensure that the impurities in the intake pipe and flange connection pipe can be fully cleaned.

[0013] 3. By setting a bevel gear on one side of the rotating frame, when the first spring drives the rotating frame to return to the initial position, the bevel gear on the outside of the rotating frame engages with the inside of the corresponding bevel gear. Driven by the motor, the rotating shaft drives the bevel gear to rotate, so that the bevel gear can drive the rotating frame to rotate, adjust the position of the shovel plate, and make up for the area that was not scraped in the original direction of the shovel plate, and then repeat the above steps to clean.

[0014] 4. By arranging elastic filter membranes on both sides of the outer wall of the T-shaped tube, moisture in the gas can be filtered out. When the shovel approaches and contacts the outer frame, the filter membrane and the outer frame are pressed together through the elastic rod to shake off the water droplets on the outer surface of the filter membrane, thereby enhancing the filtering effect of the filter membrane for long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the inner part of the air intake pipe and the flange connection pipe of the present invention; Figure 3 This is a schematic diagram of the structure of the inner part of the air intake pipe and the flange connection pipe from another angle of the present invention; Figure 4 This is a schematic diagram of the connection structure between the air intake pipe and the rotating frame of the present invention; Figure 5 This is a schematic diagram of the connection between the T-shaped tube and the outer frame of the present invention; Figure 6 This is a schematic diagram of the connection structure of the inner part of the T-shaped tube of the present invention; Figure 7 This is a schematic diagram of the connection structure between the pull rope, stretching frame, and hydraulic cylinder of the present invention; Figure 8 This is a schematic diagram of the connection structure between the shovel plate and the frame of the present invention; Figure 9 For the present invention Figure 3 A in the middle is an enlarged structural diagram; Figure 10 For the present invention Figure 4 The enlarged structural diagram at B in the middle; Figure 11 It is a schematic diagram of the connection structure between the rotating seat and the pull rope of the present invention.

[0016] In the figure: 1. conveying tank; 2. outlet pipe; 3. inlet pipe; 4. flange connecting pipe; 5. flange connecting seat; 6. casing; 7. T-shaped pipe; 8. movable cylinder; 9. motor; 10. shovel plate; 11. rotating frame; 12. outer frame; 13. first spring; 14. drainage pipe; 15. plug; 16. notch; 17. slope; 18. stretching frame; 19. pull rope; 20. frame; 21. snap ring; 22. support seat; 23. elastic rod; 24. block; 25. casing; 26. pulley; 27. filter membrane; 28. hydraulic cylinder; 29. connecting rod; 30. rotating rod; 31. pressure plate; 32. second spring; 33. support column; 34. clamping column; 35. bevel gear; 36. rotating shaft; 37. bevel gear; 38. rotating seat; 39. limit rod. DETAILED DESCRIPTION

[0017] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0019] like Figures 1-11A low-concentration gas safe and efficient transportation device shown in the figure includes a transportation tank 1. A connecting mechanism is provided at the front end of the air inlet of the transportation tank 1. The connecting mechanism also includes two air inlet pipes 3 and a flange connecting pipe 4. Flange connecting seats 5 are provided at both ends of the two air inlet pipes 3. The two air inlet pipes 3 are installed at both ends of the flange connecting pipe 4 through the flange connecting seats 5 on one side close to each other. One of the air inlet pipes 3 is connected to the air inlet. A T-shaped pipe 7 is provided inside the flange connecting pipe 4. The inner surfaces of the two air inlet pipes 3 are provided with chip shoveling mechanisms. The inner edges on both sides of the flange connecting pipe 4 are sloped 17. An air outlet pipe 2 is installed on the upper part of the interior of the end of the transportation tank 1 away from the air inlet pipe 3.

[0020] The chip shoveling mechanism includes a rotating frame 11 arranged at one end of the inner side of the air inlet pipe 3, a rotating mechanism is arranged on one side of the rotating frame 11, a rotating seat 38 is embedded in the inner side of the rotating frame 11, and a pull rope 19 is arranged on one side of the rotating seat 38. The pull rope 19 can be made of stainless steel wire rope, which is corrosion-resistant and low-cost, and can also be used with other ropes with the same characteristics. A first spring 13 is arranged on the outside of the pull rope 19, and the two ends of the first spring 13 are respectively connected to the side surface of the rotating seat 38 and the T-shaped tube 7 close to each other. A plurality of groups of frames 20 are respectively provided on the inner surface of the side of the rotating frame 11 away from the rotating mechanism, and a pressure plate 31 is rotatably installed on the upper part of the plurality of groups of frames 20. The lower surface of one end of the pressure plate 31 is connected to a column 33, and a second spring 32 is arranged on the outside of the column 33. The cam 31 is provided with a plurality of springs 32 on the upper and lower sides of the frame 20, and the cam 31 is provided with a plurality of springs 32 on the lower and upper sides of the frame 20. The cam 31 is provided with a plurality of springs 32 on the upper and lower sides of the frame 20, and the cam 31 is provided with a plurality of springs 32 on the upper and lower sides of the frame 20. The cam 31 is provided with a plurality of springs 32 on the upper and lower sides of the frame 20, and the cam 31 is provided with a plurality of springs 32 on the upper and lower sides of the frame 20. The cam 31 is provided with a plurality of springs 32 on the upper and lower sides of the frame 20, and the cam 31 is provided with a plurality of springs 32 on the upper and lower sides of the frame 20. When the lower end of the shovel plate 10 moves to the area of the flange connecting pipe 4, the lower end of the shovel plate 10 falls from the wall of the intake pipe 3 to the top of the slope 17. At this time, the second spring 32 automatically releases the elastic force. Under the pressure of the pressure plate 31 and the support column 33, the shovel plate 10 adheres to the slope 17 and scrapes the inner wall of the slope 17, thereby pushing the impurities to the discharge pipe 14 and automatically discharging the scraped rust and impurities.

[0021] The driving member includes a rotating shaft 36 fixedly inserted in the middle of the helical gear 37, a housing 6 rotatably mounted on the outside of the rotating shaft 36, and the housing 6 is embedded in the upper part of the inner part of the air inlet pipe 3. A motor 9 is provided on the outside of the housing 6, and the output shaft of the motor 9 is connected to one end of the rotating shaft 36; The rotating mechanism includes a bevel gear 35 fixedly arranged on the outside of the rotating frame 11, and a bevel gear 37 is arranged above the bevel gear 35. A driving member is arranged inside the bevel gear 37. The tooth angle of the outer surface of the bevel gear 35 is made of hard anti-corrosion rubber material. When it rotates tangentially with the bevel gear 37, the rotating frame 11 can be driven to rotate through friction contact. Therefore, when the rotating frame 11 rotates, the tooth angle of the bevel gear 35 does not fully engage with the bevel gear 37, and the rotating frame 11 can also be driven to rotate through contact resistance. The curved surface setting not only makes it convenient for the edge of the rotating frame 11 to scrape the pipe wall, but also facilitates the cooperation with the bevel gear 37 to enable the rotating frame 11 to have room to rotate, which can effectively enhance the scraping effect of the shovel plate 10 and the rotating frame 11. The shape of the shovel plate 10 is more effective in cleaning the rusted part of the pipe wall, fits the pipe wall, and has a good scraping effect.

[0022] The end of the pull rope 19 away from the rotating seat 38 extends to the inside of the T-shaped tube 7, and pulleys 26 are symmetrically provided at both ends of the inside of the T-shaped tube 7. The pull rope 19 passes between the two sets of pulleys 26 and extends upwards to the T-shaped tube 7. A fixed wire assembly is provided inside the T-shaped tube 7 and near the outside of the pull rope 19. The pulley 26 is provided in the transverse area of the T-shaped tube 7 to position the pull rope 19, so that the direction of travel of the pull rope 19 is more regular and the rope body is not messy.

[0023] The wire fixing assembly includes a clamping block 24 fixedly arranged inside the T-shaped tube 7, and a housing 25 is arranged inside the clamping block 24 and outside the pull rope 19; The clamping block 24 can stably install the housing 25 in the vertical area of the T-shaped tube 7, ensuring that the rope body passing through the interior of the housing 25 can be separated, and the pull ropes 19 are each connected to the outside of the stretching frame 18 to ensure that the rope body will not be entangled.

[0024] A stretching frame 18 is installed on the ends of the two pull ropes 19 away from the T-shaped tube 7. A connecting rod 29 is provided on the outside of the stretching frame 18. A hydraulic cylinder 28 is provided at the lower end of the connecting rod 29. The outside of the hydraulic cylinder 28 is fixed to the outer wall of the flange connection pipe 4 through a support base 22. The hydraulic cylinder 28 is connected to the support base 22 and is mounted on the outer wall of the flange connection pipe 4. The hydraulic cylinder 28 is used for cleaning by pulling the pull rope 19 through its own telescopic movement, which reduces the burden on workers to a certain extent.

[0025] Outer frames 12 are slidably mounted on both ends of the outer wall of the T-shaped tube 7, and slots 16 are provided at the bottom of the two sets of outer frames 12. The slots 16 are used to circulate the rust and impurities pushed by the shovel plate 10. The rust and impurities can fall into the exhaust pipe 14 through the slots 16. Filter membranes 27 are installed inside the two sets of outer frames 12. The filter membrane 27 is made of a membrane body made of polyvinylidene fluoride and is used to filter moisture in the gas. It is corrosion-resistant. Elastic rods 23 are installed on the upper side of the outer wall of the two sets of outer frames 12 that are close to each other. Movable cylinders 8 are provided on both sides of the outer wall of the T-shaped tube 7 and near the elastic rods 23. When the elastic rods 23 are squeezed by the shovel plate 10, they will slide to the movable cylinder 8 Inside, through this contact, the water droplets attached to the outer surface of the filter membrane 27 can be vibrated to ensure the filtering effect of the filter membrane 27. The elastic rod 23 and the movable cylinder 8 are slidably matched. The middle of the flange connecting pipe 4 is connected to a drain pipe 14, and the outer bottom of the drain pipe 14 is threadedly connected with a plug 15. The plug 15 is used to close the drain pipe 14 to ensure the airtightness of the pipeline when transporting gas. A clamping ring 21 is sleeved on both sides of the outer wall of the T-shaped tube 7 and at one end away from the movable cylinder 8. The outer frame 12 and the clamping ring 21 are movably opposed to each other, and the clamping ring 21 is in contact with the outer frame 12 to limit the sliding range of the outer frame 12, so that the scraped water droplets quickly fall into the drain pipe 14.

[0026] Working principle: When the device is in use, the air inlet pipe 3 at one end away from the delivery tank 1 is connected to the external gas delivery pipeline through the flange connection seat 5 on the outside of one end, and the air inlet pipe 3 close to the delivery tank 1 is directly connected to the flange of the air inlet of the delivery tank 1 through the flange connection seat 5 at one end. The flange connection pipe 4 is connected and installed between the two air inlet pipes 3 for use. The gas is then delivered to the interior of the delivery tank 1 through the two air inlet pipes 3 and the flange connection pipe 4; When the shovel plate 10 is close to the flange connection pipe 4, the lower end of the shovel plate 10 falls from the wall of the intake pipe 3 to the top of the slope 17. At this time, the second spring 32 automatically releases its elastic force. Under the pressure of the pressure plate 31 and the support column 33, the shovel plate 10 fits the slope 17 and scrapes the inner wall of the slope 17, thereby fully pushing the impurities to the discharge pipe 14 and cleaning the flange connection pipe 4. When the pull rope 19 is retracted and the rotating frame 11 is restored to the original position of the intake pipe 3 under the elastic force of the first spring 13, the bevel gear 35 is tangential to the bevel gear 37. When the motor 9 drives the rotating shaft 36 to rotate, the bevel gear 37 outside the rotating shaft 36 will contact and engage with the bevel gear 35 during the rotation, thereby adjusting the angle of the rotating frame 11, causing the shovel plate 10 inside the rotating frame 11 to change its angle, making up for the area that was not scraped in the original direction of travel of the shovel plate 10, and then repeating the above steps to clean. During the gas transportation process, the filter membrane 27 outside the T-shaped tube 7 can filter out the impurity. The moisture condenses into water droplets and adheres to the surface of the filter membrane 27. When the shovel plate 10 moves to the flange connecting pipe 4, the shovel plate 10 will come into contact with the outer frame 12. When in contact, the outer frame 12 will drive the filter membrane 27 to slide toward the inside of the movable cylinder 8 under the action of the elastic rod 23, thereby vibrating the filter membrane 27, causing the water droplets on the outer surface of the filter membrane 27 to fall into the discharge pipe 14.

[0027] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. Various changes and improvements are possible without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the invention as claimed.

Claims

1. A low-concentration gas safe and efficient conveying device, comprising a conveying tank (1), characterized in that: The front end of the air inlet of the conveying tank (1) is provided with a connecting mechanism, and the connecting mechanism also includes two air inlet pipes (3) and a flange connecting pipe (4). Both ends of the two air inlet pipes (3) are provided with flange connecting seats (5). The two air inlet pipes (3) are installed at both ends of the flange connecting pipe (4) through the flange connecting seats (5) on one side close to each other. One of the air inlet pipes (3) is connected to the air inlet. A T-shaped pipe (7) is provided inside the flange connecting pipe (4). The inner surfaces of the two air inlet pipes (3) are provided with a chip shoveling mechanism. The inner edges on both sides of the flange connecting pipe (4) are sloped (17). An air outlet pipe (2) is installed on the upper part of the interior of the end of the conveying tank (1) away from the air inlet pipe (3).

2. A low-concentration gas safe and efficient transportation device according to claim 1, characterized in that: The chip shoveling mechanism includes a rotating frame (11) arranged at one end of the inner side of the air inlet pipe (3), a rotating mechanism is arranged on one side of the rotating frame (11), a rotating seat (38) is embedded in the inner side of the rotating frame (11), a pull rope (19) is arranged on one side of the rotating seat (38), a first spring (13) is arranged outside the pull rope (19), and the two ends of the first spring (13) are respectively connected to the side surface of the rotating seat (38) and the T-shaped tube (7) close to each other, and the inner surface of the side of the rotating frame (11) away from the rotating mechanism is respectively provided with a plurality of groups of frames (20), and a pressure plate (31) is rotatably installed on the upper part of the plurality of groups of frames (20), and the lower surface of one end of the pressure plate (31) is connected to a support column (33), and the support column A second spring (32) is provided on the outside of the support column (33), a clamping column (34) is provided on the inner side and lower side of the support column (33), and a rotating rod (30) is provided at both ends of the clamping column (34). The two rotating rods (30) are rotatably connected to the frame (20), and the two ends of the clamping column (34) are connected to the rotating rods (30) on both sides. The two ends of the second spring (32) are respectively connected to the outer wall of the side where the pressure plate (31) and the clamping column (34) are close to each other. The ends of the two rotating rods (30) away from the frame (20) are fixedly connected to the upper surface of the shovel plate (10), and a limiting rod (39) is provided on the inner side of the frame (20) and close to the upper side of the pressure plate (31), and the limiting rod (39) is against the upper surface of the pressure plate (31).

3. A low-concentration gas safe and efficient transportation device according to claim 2, characterized in that: The rotating mechanism comprises a bevel gear (35) fixedly arranged on the outside of the rotating frame (11), a bevel gear (37) is arranged above the bevel gear (35), and a driving member is arranged inside the bevel gear (37).

4. A low-concentration gas safe and efficient transportation device according to claim 3, characterized in that: The driving member includes a rotating shaft (36) fixedly inserted in the middle of the helical gear (37), a housing (6) rotatably mounted on the outside of the rotating shaft (36), the housing (6) being embedded above the inside of the air intake pipe (3), a motor (9) being provided on the outside of the housing (6), and an output shaft of the motor (9) being connected to one end of the rotating shaft (36).

5. The low-concentration gas safe and efficient transportation device according to claim 2 is characterized in that: One end of the pull rope (19) away from the rotating seat (38) extends to the inside of the T-shaped tube (7), and pulleys (26) are symmetrically provided at both ends of the inside of the T-shaped tube (7). The pull rope (19) passes through between the two sets of pulleys (26) and extends toward the top of the T-shaped tube (7). A fixed line component is provided inside the T-shaped tube (7) and close to the outside of the pull rope (19).

6. A low-concentration gas safe and efficient transportation device according to claim 5, characterized in that: The line fixing assembly comprises a clamping block (24) fixedly arranged inside the T-shaped tube (7), and a casing (25) is arranged inside the clamping block (24) and close to the outside of the pull rope (19).

7. The low-concentration gas safe and efficient transportation device according to claim 5, characterized in that: A stretching frame (18) is installed on one end of the two pull ropes (19) away from the T-shaped tube (7). A connecting rod (29) is provided on the outside of the stretching frame (18). A hydraulic cylinder (28) is provided at the lower end of the connecting rod (29). The outside of the hydraulic cylinder (28) is fixedly mounted on the outer wall of the flange connection tube (4) through a support seat (22).

8. The low-concentration gas safe and efficient transportation device according to claim 1 is characterized by: The outer walls of the T-shaped tube (7) are slidably mounted with outer frames (12) at both ends, and notches (16) are provided at the lower interiors of the two groups of outer frames (12). Filter membranes (27) are installed inside the two groups of outer frames (12). Elastic rods (23) are installed above the outer walls of the two groups of outer frames (12) that are close to each other. Movable cylinders (8) are provided on both sides of the outer wall of the T-shaped tube (7) and near the elastic rods (23). The elastic rods (23) and the movable cylinders (8) are slidably fitted. A drainage pipe (14) is installed in the middle of the internal connection of the flange connecting pipe (4), and a plug (15) is threadedly connected to the lower exterior of the drainage pipe (14). Snap rings (21) are sleeved on both sides of the outer wall of the T-shaped tube (7) and at one end away from the movable cylinder (8). The outer frame (12) and the snap ring (21) are movably opposed to each other.

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