A rod-type material level detection device for a vertical carbonization furnace

Abstract

This utility model discloses a rod-type material level detection device for a vertical carbonization furnace, including a drive assembly, a connecting assembly, a detection assembly, and a sealing assembly. The drive assembly includes a drive unit and a photoelectric switch; the connecting assembly consists of a connecting rope, a displacement encoder, and a fixed pulley, with the drive unit and the detection assembly connected to each end of the connecting rope, and the photoelectric switch and displacement encoder mounted on the connecting rope; the detection assembly includes a detection shaft, a limit switch, and a limit block, with one end of the detection shaft extending into the furnace and the other end connected to the connecting rope; the sealing assembly is located at the connection between the detection shaft and the detection port. This device effectively overcomes the influence of high temperature, high humidity, and dusty environments on detection accuracy through mechanical detection, achieving precise measurement of material level height and providing reliable assurance for the automated control of the carbonization furnace.

Description

Technical Field

[0001] This utility model relates to the field of vertical carbonization furnace application technology, and in particular to a rod-type material level detection device for a vertical carbonization furnace. Background Technology

[0002] In the production process of vertical carbonization furnaces, accurate detection of material level is a crucial step in achieving automated control. Traditional detection methods mainly employ non-contact instruments or fixed sensors. However, due to the harsh operating conditions inside the carbonization furnace—high temperature, high humidity, and filled with smoke and tar vapor—these electronic detection devices are highly susceptible to environmental interference and may fail, resulting in unreliable measurement data. Although some equipment has attempted to adopt mechanical detection methods, achieving periodic automatic detection often presents challenges in balancing detection accuracy with equipment reliability. In particular, existing technologies have not yet found effective solutions regarding the sealing performance of the detection device and the coordination of its moving mechanisms. This not only affects the accuracy of material level data but also hinders the improvement of the automation control level of the carbonization furnace. Summary of the Invention

[0003] In view of this, the purpose of this utility model is to propose a rod-type material level detection device for vertical carbonization furnaces, which realizes automatic material level detection through the combination of mechanical structure and automatic control system, and solves the problem that traditional detection methods are easily interfered with and fail under harsh working conditions, thus failing to reliably detect material level height.

[0004] To achieve the aforementioned technical objectives, the technical solution adopted by this utility model is as follows: a rod-type material level detection device for a vertical carbonization furnace, suitable for vertical carbonization furnaces. The vertical carbonization furnace has a detection port, and the furnace contains material. The detection device includes: a drive assembly, a connecting assembly, a detection assembly, and a sealing assembly. The drive assembly includes a drive unit and a photoelectric switch; the connecting assembly includes a connecting rope, a displacement encoder, and a fixed pulley. One end of the connecting rope is connected to the output end of the drive unit, and the other end of the connecting rope wraps around the fixed pulley and extends downwards. The photoelectric switch is mounted on the connecting rope and is used to detect the connecting rope. The tension and displacement encoder are mounted on the connecting rope to detect the descent length of the connecting rope. The detection assembly includes a detection shaft, a limit switch, and a limit block. The limit block is set at a first preset height, which is configured as the reset height of the detection shaft. One end of the detection shaft enters the furnace of the vertical carbonization furnace through the detection port, and the other end of the detection shaft is connected to the connecting rope. The limit switch is mounted on the connecting rope and is used to detect the position of the detection shaft through the limit block during the reset process. A sealing assembly is located at the connection between the detection shaft and the detection port to maintain the airtightness of the furnace.

[0005] In some embodiments, the sealing assembly includes: a packing box, a packing layer, and a gland. The packing box is disposed on the outside of the vertical carbonization furnace and is fitted over the outside of the detection shaft. The packing layer is disposed inside the packing box and is in airtight contact with the detection shaft. The gland is closed on top of the packing box and is fitted over the outside of the detection shaft. The gland is used to fix the packing layer.

[0006] In some embodiments, the packing box is annular, and the inner side of the packing box is provided with an upward-facing packing groove, and a packing layer is provided in the packing groove.

[0007] In some embodiments, the gland is annular in shape, and the inner side of the gland is provided with a downwardly protruding flange that is adapted to the size of the packing groove.

[0008] In some embodiments, the gland is detachably connected to the packing box.

[0009] In some embodiments, the filler layer is configured as wool felt soaked in machine oil.

[0010] In some embodiments, the drive unit is a winch.

[0011] In some embodiments, the detection assembly further includes an abutment plate disposed at the other end of the detection shaft, the abutment plate being used to contact the material.

[0012] In some embodiments, the horizontal cross-section of the abutment plate is square or circular.

[0013] In some embodiments, the limiting block is configured as an angle iron.

[0014] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: The present invention provides a rod-type material level detection device for a vertical carbonization furnace, including a drive assembly, a connecting assembly, a detection assembly, and a sealing assembly. The drive assembly includes a drive unit and a photoelectric switch; the connecting assembly consists of a connecting rope, a displacement encoder, and a fixed pulley, with the drive unit and the detection assembly connected to both ends of the connecting rope, and the photoelectric switch and the displacement encoder mounted on the connecting rope; the detection assembly includes a detection shaft, a limit switch, and a limit block, with one end of the detection shaft extending into the furnace and the other end connected to the connecting rope; the sealing assembly is located at the connection between the detection shaft and the detection port. This device effectively overcomes the influence of high temperature, high humidity, and dusty environments on detection accuracy through mechanical detection, achieving accurate measurement of material level height and providing a reliable guarantee for the automated control of the carbonization furnace. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the specific structure of the material level detection device described in the specific implementation method.

[0017] The attached figures are labeled as follows:

[0018] 1. Driver components;

[0019] 11. Drive unit;

[0020] 12. Photoelectric switch;

[0021] 2. Connecting components;

[0022] 21. Connecting rope;

[0023] 22. Displacement encoder;

[0024] 23. Fixed pulley;

[0025] 3. Detection components;

[0026] 31. Detection axis;

[0027] 32. Limit switch;

[0028] 33. Limit block;

[0029] 4. Sealing components;

[0030] 41. Stuffing box;

[0031] 42. Packing layer;

[0032] 43. Capping;

[0033] 5. Vertical carbonization furnace. Detailed Implementation

[0034] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be particularly noted that the following embodiments are only for illustrating the present invention and do not limit the scope of the present invention. Similarly, the following embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0035] Please see Figure 1This embodiment provides a rod-type material level detection device for a vertical carbonization furnace, suitable for a vertical carbonization furnace 5. The vertical carbonization furnace 5 has a detection port and contains material. The detection device includes: a drive assembly 1, a connecting assembly 2, a detection assembly 3, and a sealing assembly 4. The drive assembly 1 includes a drive unit 11 and a photoelectric switch 12; the connecting assembly 2 includes a connecting rope 21, a displacement encoder 22, and a fixed pulley 23. One end of the connecting rope 21 is connected to the output end of the drive unit 11, and the other end of the connecting rope 21 wraps around the fixed pulley 23 and extends downward. The photoelectric switch 12 is disposed on the connecting rope 21 and is used to detect the tension of the connecting rope 21. The displacement encoder 22 is disposed on the connecting rope 21. On the connecting rope 21, a displacement encoder 22 is used to detect the descent length of the connecting rope 21; the detection component 3 includes a detection shaft 31, a limit switch 32, and a limit block 33. The limit block 33 is set at a first preset height, which is configured as the reset height of the detection shaft 31. One end of the detection shaft 31 enters the furnace of the vertical carbonization furnace 5 through the detection port, and the other end of the detection shaft 31 is connected to the connecting rope 21. The limit switch 32 is set on the connecting rope 21 and is used to detect the position of the detection shaft 31 through the limit block 33 during the reset process of the detection shaft 31; the sealing component 4 is set at the connection between the detection shaft 31 and the detection port and is used to maintain the airtightness of the furnace inside the vertical carbonization furnace 5.

[0036] In this embodiment, the drive unit 11 refers to the power source that drives the connecting rope 21, and a motor combined with a reduction gear mechanism can be used to achieve smooth transmission. The photoelectric switch 12 is installed on the connecting rope 21 to sense the slack state of the connecting rope 21. The connecting rope 21 is preferably made of high-strength steel wire rope, with one end connected to the output shaft of the drive unit 11 and the other end passing over the fixed pulley 23 and connected to the detection shaft 31. The fixed pulley 23 is fixed to the upper part of the furnace body and is used to change the transmission direction of the connecting rope 21. The displacement encoder 22 accurately calculates the descent distance of the detection shaft 31 by detecting the displacement of the connecting rope 21. The detection shaft 31 is a metal rod with a specially treated surface, with its lower end extending into the furnace to contact the material and its upper end fixed to the connecting rope 21. The limit block 33 is fixed in a preset position. When the detection shaft 31 is reset, the limit switch 32 on the connecting rope 21 contacts the limit block 33 to generate a signal. The sealing assembly 4 adopts a multi-layer packing structure, which can maintain the airtightness of the furnace when the detection shaft 31 reciprocates.

[0037] Furthermore, the surface roughness of the test shaft 31 is ≥Ra6.3μm, which enhances its wear resistance and anti-stick properties.

[0038] During operation, the drive unit 11 lowers the detection shaft 31 at a constant speed via the connecting rope 21, while the displacement encoder 22 records the downward distance in real time. When the detection shaft 31 contacts the material surface, it stops due to obstruction, and the drive unit 11 continues to release the rope, slackening the connecting rope 21 and triggering the photoelectric switch 12 to stop the descent and record the current displacement. Subsequently, the drive unit 11 reverses and retracts the detection shaft 31. When the limit switch 32 touches the limit block 33, it stops resetting, completing one detection cycle. The entire process achieves accurate measurement of the material level height through the coordinated operation of mechanical transmission and electrical detection. This device features a simple and reliable structure, adaptability to harsh working conditions, and its mechanical detection method effectively avoids the risk of electronic instrument failure in high-temperature and dusty environments. The sealed structure ensures stable gas pressure inside the furnace, providing an important guarantee for the continuous and stable operation of the carbonization furnace.

[0039] In some embodiments, the sealing assembly 4 includes: a packing box 41, a packing layer 42, and a pressure cap 43. The packing box 41 is disposed on the outside of the vertical carbonization furnace 5 and is sleeved on the outside of the detection shaft 31. The packing layer 42 is disposed inside the packing box 41 and is in airtight contact with the detection shaft 31. The pressure cap 43 covers the top of the packing box 41 and is sleeved on the outside of the detection shaft 31. The pressure cap 43 is used to fix the packing layer 42.

[0040] In this embodiment, the stuffing box 41 is a metal annular shell with an inner diameter slightly larger than the diameter of the detection shaft 31 to form an installation gap. Preferably, the diameter of the detection shaft 31 is 22 cm. Preferably, the stuffing layer 42 is composed of multiple layers of wool felt, possessing good elasticity and high-temperature resistance, achieving dynamic sealing through close contact with the detection shaft 31. The gland 43 is a flange structure, applying uniform pressure to the stuffing layer 42 via bolt tightening to ensure stable sealing performance. This sealing assembly 4 maintains an effective sealing state throughout the reciprocating motion of the detection shaft 31.

[0041] This embodiment achieves a reliable seal during the movement of the detection shaft 31 through the coordinated operation of the stuffing box 41, the stuffing layer 42, and the gland 43. When the detection shaft 31 moves up and down, the stuffing layer 42 adapts to the shaft's movement while effectively preventing gas leakage from the furnace. The continuous clamping force of the gland 43 ensures that the stuffing layer 42 maintains good contact with the detection shaft 31, thus maintaining a stable sealing effect even under high-temperature conditions. This structure is simple and reliable, solving the problem of traditional sealing methods failing easily in high-temperature and dusty environments, and significantly improving the environmental adaptability and service life of the detection device.

[0042] In some embodiments, the packing box 41 is annular, and the inner side of the packing box 41 is provided with an upward-facing packing groove, and a packing layer 42 is provided in the packing groove.

[0043] In this embodiment, the stuffing box 41 is a circular metal component with a U-shaped stuffing groove on its inner side, opening upwards to facilitate the installation and replacement of the stuffing layer 42. The depth design of the stuffing groove ensures that the stuffing layer 42 can be fully filled and maintain close contact with the detection shaft 31. Preferably, the depth of the stuffing groove is 10cm and the width is 6cm.

[0044] In this embodiment, the reasonable design of the U-shaped packing groove enables the packing layer 42 to be evenly stressed and tightly wrap the detection shaft 31 under the action of the pressure cap 43, forming a continuous and effective sealing barrier during the movement of the detection shaft 31, which not only ensures the reliability of the seal but also facilitates maintenance and replacement.

[0045] In some embodiments, the gland 43 is annular, and the inner side of the gland 43 is provided with a downwardly protruding flange that is adapted to the size of the packing groove.

[0046] In this embodiment, the gland 43 is an annular metal component, and its inner downward-extending flange forms a precise fit with the packing groove. The radial dimension of the flange is slightly smaller than the inner diameter of the packing groove, ensuring that the gland 43 can apply uniform axial pressure to the packing layer 42 when it is pressed down.

[0047] In this embodiment, the precise fit between the flange and the packing groove enables the gland 43 to uniformly compact the packing layer 42 when tightening, which not only ensures the consistency of the sealing effect, but also avoids the deformation problem caused by excessive local stress on the packing layer 42, significantly improving the reliability and service life of the sealing structure.

[0048] In some embodiments, the gland 43 is detachably connected to the packing box 41.

[0049] In this embodiment, optionally, the gland 43 and the packing box 41 are detachably fixed by bolt connection, and a sealing gasket is provided at the connection to prevent gas leakage. This detachable structure facilitates the inspection and replacement of the packing layer 42 during regular maintenance.

[0050] This embodiment eliminates the need for complete disassembly of the sealing assembly 4 during maintenance. Only the bolts need to be loosened to remove the gland 43 for maintenance of the packing layer 42. This ensures the reliability of the sealing performance, significantly reduces maintenance difficulty and downtime, and improves the maintainability and efficiency of the equipment.

[0051] In some embodiments, the filler layer 42 is configured as wool felt soaked in machine oil.

[0052] In this embodiment, the packing layer 42 is made of wool felt and is sealed with machine oil lubrication. Preferably, the sealing pressure is ≥0.05MPa, which can effectively prevent gas leakage in the furnace and ensure the airtightness requirements during the testing process.

[0053] In this embodiment, wool felt soaked in machine oil is used as the packing layer 42. When the gland 43 presses the packing box 41, the machine oil fully wets the wool fibers to form a uniform oil film. This film maintains continuous lubrication and fills tiny gaps during the up-and-down movement of the insert rod. It utilizes the elasticity of the wool felt to adapt to the rod's movement while simultaneously achieving a dynamic seal through the machine oil, effectively preventing gas leakage from the furnace. This sealing structure combines good responsiveness and sealing reliability, maintaining stable sealing performance even under high-temperature conditions. Furthermore, the wear-resistant properties of the wool felt extend the service life of the packing layer 42, reducing maintenance frequency.

[0054] In some embodiments, the drive unit 11 is a winch.

[0055] In this embodiment, a winch is used as the drive unit 11. Its stable rope winding and unwinding action drives the insertion rod to achieve precise vertical lifting and lowering. When the winch is running, the winding and unwinding of the wire rope causes the insertion rod to move at a uniform speed, and a reduction gear ensures smooth movement. The winch-driven method offers high reliability and load capacity, can adapt to long-term stable operation under high-temperature conditions, and its simple mechanical structure facilitates maintenance. Combined with the control system, it can achieve precise material level detection.

[0056] In some embodiments, the detection component 3 further includes an abutment plate disposed at the other end of the detection shaft 31, the abutment plate being used to contact the material.

[0057] In this embodiment, by providing an abutment plate at the end of the detection shaft 31, when the detection shaft 31 moves downward, the abutment plate first contacts the material surface and forms a buffer, preventing the detection shaft 31 from directly impacting the material. By increasing the contact area through the abutment plate, the detection shaft 31 is protected from impact damage, and the accuracy of material level detection is improved. At the same time, its planar structure design effectively prevents material accumulation and ensures the reliability of the detection action.

[0058] In some embodiments, the horizontal cross-section of the abutment plate is square or circular.

[0059] In this embodiment, by designing the horizontal cross-section of the contact plate as a square or circular structure, its regular edge contour can evenly distribute the contact pressure when the contact plate contacts the material, avoiding local stress concentration. This embodiment not only ensures sufficient contact with the material but also facilitates processing and manufacturing. At the same time, its symmetrical structural characteristics ensure balanced force during the detection process, avoiding measurement errors caused by off-center loading, and improving the stability and reliability of material level detection.

[0060] In some embodiments, the limiting block 33 is configured as an angle iron.

[0061] In this embodiment, an angle iron is used as the limiting block 33. When the detection component 3 moves to its limit position, the right-angle structure of the angle iron provides a stable mechanical stop. One side contacts and limits the movement of the component, while the other side is firmly connected to the fixed base. The angle iron has high structural strength and ease of installation. Its sharp edges enable precise stroke control, while the standardized material selection reduces manufacturing costs and ensures the reliability and durability of the limiting device.

[0062] By adopting the above technical solutions, this utility model differs from the prior art and has the following beneficial effects:

[0063] This invention provides a rod-type material level detection device for a vertical carbonization furnace. Through the coordinated operation of a drive assembly 1, a connecting assembly 2, a detection assembly 3, and a sealing assembly 4, it achieves accurate detection of the material level inside the carbonization furnace. The drive assembly 1 drives the detection shaft 31 via a connecting rope 21. A displacement encoder 22 accurately measures the downward movement distance. When the detection shaft 31 contacts the material, a photoelectric switch 12 senses the slack in the connecting rope 21 and stops its descent. Subsequently, the drive unit 11 reverses and retracts the detection shaft 31. A limit switch 32 and a limit block 33 cooperate to achieve precise positioning. The sealing assembly 4 adopts a multi-layer packing structure, effectively maintaining the airtightness inside the furnace during the reciprocating motion of the detection shaft 31. This device overcomes the problem of electronic instrument failure in high-temperature and dusty environments by combining mechanical transmission with electrical detection. Its structure is simple and reliable, and it has strong adaptability to harsh working conditions. The sealing system composed of the packing box 41, the packing layer 42, and the pressure cap 43 maintains good sealing performance even under dynamic working conditions. The wool felt packing layer 42, soaked in machine oil, combines elasticity and lubricity, ensuring long-term sealing reliability. The abutment plate at the end of the detection shaft 31 avoids direct impact on the material, and the square or circular cross-section structure makes the force more even. The angle iron, as the limit block 33, provides a stable mechanical stop, realizing precise stroke control. The entire device ensures measurement accuracy while being easy to maintain and having a long service life, providing a reliable guarantee for the continuous and stable operation of the vertical carbonization furnace 5.

[0064] The above description is only a part of the embodiments of this utility model, and does not limit the scope of protection of this utility model. Any equivalent device or equivalent process transformation made based on the content of this utility model specification and drawings, or direct or indirect application in other related technical fields, are similarly included in the patent protection scope of this utility model.

Claims

1. A rod-type material level detection device for a vertical carbonization furnace, characterized in that, Suitable for vertical carbonization furnaces, the vertical carbonization furnace having a detection port, the vertical carbonization furnace containing material, the detection device comprising: The driving components include a driving unit and a photoelectric switch; The connecting assembly includes a connecting rope, a displacement encoder, and a fixed pulley. One end of the connecting rope is connected to the output end of the drive unit, and the other end of the connecting rope extends downward around the fixed pulley. A photoelectric switch is disposed on the connecting rope and is used to detect the tension of the connecting rope. The displacement encoder is disposed on the connecting rope and is used to detect the descent length of the connecting rope. The detection assembly includes a detection shaft, a limit switch, and a limit block. The limit block is positioned at a first preset height, which is configured as the reset height of the detection shaft. One end of the detection shaft enters the furnace of the vertical carbonization furnace through the detection port, and the other end of the detection shaft is connected to the connecting rope. The limit switch is mounted on the connecting rope and is used to detect the position of the detection shaft through the limit block during the reset process. A sealing assembly is located at the connection between the detection shaft and the detection port and is used to maintain the airtightness of the furnace interior of the vertical carbonization furnace.

2. The rod-type material level detection device for a vertical carbonization furnace according to claim 1, characterized in that, The sealing assembly includes: A packing box is disposed on the outside of the vertical carbonization furnace, and the packing box is sleeved on the outside of the detection shaft; A packing layer is disposed inside the packing box, and the packing layer is in airtight contact with the detection shaft; A gland covers the top of the packing box and is sleeved on the outside of the detection shaft. The gland is used to fix the packing layer.

3. The rod-type material level detection device for a vertical carbonization furnace according to claim 2, characterized in that, The packing box is circular in shape, and the inner side of the packing box is provided with an upward-facing packing groove, and the packing layer is provided in the packing groove.

4. The rod-type material level detection device for a vertical carbonization furnace according to claim 3, characterized in that, The gland is annular in shape, and the inner side of the gland is provided with a downwardly protruding flange, which is adapted to the size of the packing groove.

5. The rod-type material level detection device for a vertical carbonization furnace according to any one of claims 2 to 4, characterized in that, The gland is detachably connected to the packing box.

6. The rod-type material level detection device for a vertical carbonization furnace according to any one of claims 2 to 4, characterized in that, The filler layer is configured as wool felt soaked in machine oil.

7. The rod-type material level detection device for a vertical carbonization furnace according to claim 1, characterized in that, The drive unit is a winch.

8. The rod-type material level detection device for a vertical carbonization furnace according to claim 1, characterized in that, The detection component also includes: An abutment plate is disposed at the other end of the detection shaft, and the abutment plate is used to contact the material.

9. The rod-type material level detection device for a vertical carbonization furnace according to claim 8, characterized in that, The horizontal cross-section of the abutment plate is square or circular.

10. The rod-type material level detection device for a vertical carbonization furnace according to claim 1, characterized in that, The limiting block is configured as an angle iron.

Images