Drying furnace
By setting up an adjustable flame detection device and rotating motor in the drying furnace to break the blades, the problems of difficulty in detecting the flame detector and low drying efficiency are solved, and higher detection accuracy and drying efficiency are achieved.
Patent Information
- Application Number
- CN202323357566.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-08
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2033-12-08
AI Technical Summary
The flame detector in existing drying furnaces is easily covered by dust or the flame is shaken, which makes it impossible to detect, affecting the ignition of the combustion engine and low drying efficiency.
A flame detection device including a detector, a bracket and a flame detector is designed. The position and angle of the flame detector can be adjusted by adjusting the rod and bolts to ensure that its distance and angle from the flame is appropriate, and two are arranged on the combustion chamber. 2. The detection port is used to improve detection accuracy; at the same time, the rotating motor and the dispersed blades are used to promote the rapid evaporation of potassium fertilizer wet materials.
It improves the detection accuracy of the flame detector, ensures the normal ignition of the combustion engine, and accelerates the evaporation of moisture by rolling and breaking the materials, improving drying efficiency.
Smart Images
Figure CN222143577U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a drying furnace, and more specifically to the structure of the drying furnace. Background Art
[0002] Salt lake brine is rich in minerals such as potassium chloride and magnesium chloride, and is the main raw material for producing potash fertilizer. In the potash fertilizer production process, the raw materials are sequentially concentrated, pulped, flotated, low-sodium concentrated, cold crystallized, crude potassium screened, crude potassium concentrated and refined potassium washed to obtain potash fertilizer wet material, which is then dried, cooled and packaged to obtain the product.
[0003] The existing method usually uses a drying furnace to dry the wet potash fertilizer. The furnace body has a drying chamber inside. The front end of the drying chamber is a combustion chamber. A burner is installed on the combustion chamber. The burner sprays the flame formed by igniting natural gas into the combustion chamber, and releases heat in the combustion chamber. The heat enters the drying chamber with the hot air to dry the wet potash fertilizer. For production safety, a flameout protection function needs to be set on the burner, that is, the flame is detected by a flame detector. If the flame is detected within the ignition safety time, the valve is kept open to maintain the gas supply. If the flame is not detected within the ignition safety time, the valve is quickly cut off to cut off the gas supply.
[0004] Existing drying furnaces usually fix flame detectors in the combustion chamber for detecting flames. Since a large amount of dust is generated during the drying process of wet potassium fertilizer, the dust enters the combustion chamber and covers the probe of the flame detector, causing the flame detector to be unable to detect the flame and the burner to be unable to ignite, affecting normal production. If the flame detector is to be cleaned and repaired, the drying furnace needs to be disassembled, which is time-consuming and labor-intensive.
[0005] In addition, affected by factors such as the size of the combustion-supporting air and changes in gas pressure, the flame will shake during combustion. If the flame shaking exceeds the detection range of the flame detector, the flame will not be detected, making it impossible for the burner to ignite. Moreover, only using hot air to dry the wet potassium fertilizer has a low drying efficiency.
[0006] The utility model aims to solve the problem that when the existing drying furnace is used, the flame detector is easy to fail to detect the flame, resulting in the burner being unable to ignite and the drying efficiency being low. Utility Model Content
[0007] In order to solve the above problems, the utility model provides a drying furnace, including a furnace body 1, a combustion chamber 2, a burner 3 and a flame detection device 4. The furnace body 1 is provided with a feed port 121, a discharge port 131 and a smoke outlet 132, and a drying chamber 15 is formed inside. The combustion chamber 2 is arranged at the front end of the furnace body 1, and a combustion chamber 21 connected to the drying chamber 15 is formed inside. The combustion chamber 2 is provided with a detection port 22, and the burner 3 is arranged on the combustion chamber 2, and the burner nozzle 31 of the burner 3 is inserted into the combustion chamber 21.
[0008] The flame detection device 4 includes a detection box 41, a bracket 5 and a flame detector 42. The detection box 41 is fixedly arranged on the combustion chamber 2 and is covered outside the detection port 22. The detection box 41 is provided with a box door 411. The bracket 5 includes an adjustment rod 51, an adjustment block 52, an adjustment bolt 523 and a connecting rod 53. The adjustment rod 51 is fixedly arranged in the detection box 41 and is parallel to the axis of the furnace body 1. The adjustment block 52 is provided with an adjustment hole 521 matching the adjustment rod 51, and an adjustment threaded hole 522 matching the adjustment bolt 523 and communicating with the adjustment hole 521 is provided on the side. The adjustment block 52 is sleeved on the adjustment rod 51, and the adjustment bolt 523 is arranged in the adjustment threaded hole 522 to fix the adjustment block 52. One end of the connecting rod 53 is connected to the adjustment block 52, and the other end extends toward the combustion chamber 2. The end is provided with a mounting block 54, and the flame detector 42 is fixedly arranged on the mounting block 54.
[0009] When the utility model is used, the flame detector 42 is set at a suitable position according to the size of the flame and the inclination angle, so that the distance between the flame detector 42 and the flame is appropriate and the angle is aligned, thereby improving the detection accuracy of the flame detector 42. When adjusting, the box door 411 on the detection box 41 is opened, the adjusting bolt 523 is rotated to loosen the adjusting block 52, and the adjusting block 52 is moved along the adjusting rod 51 to make the flame detector 42 in a suitable position, and then the adjusting bolt 523 is rotated in the opposite direction to fix the adjusting block 52. After closing the box door 411, the burner 3 is turned on to carry out the drying operation. The air heated by the flame burner 3 forms hot air and enters the drying chamber 15 from the combustion chamber 2. After the potash fertilizer wet material entering the drying chamber 15 from the feed port 121 is heated by the hot air, the water content in the potash fertilizer wet material evaporates rapidly, and the generated moisture and smoke are discharged from the smoke outlet 132 with the hot air for treatment, and the dried material is discharged from the discharge port 131.
[0010] The utility model provides a flame detection device 4, a detection port 22 is provided on the combustion chamber 2, a detection box 41 is provided at the detection port 22, an adjustment rod 51 is provided in the detection box 41, parallel to the axis of the furnace body 1, an adjustment block 52 is slidably provided on the adjustment rod 51, and the adjustment block 52 can be moved on the adjustment rod 51 by screwing the adjustment bolt 523 to adjust the distance between the flame detector 42 and the burner 31, that is, to adjust the distance between the flame detector 42 and the flame ejected from the burner 31, or the adjustment block 52 is rotated along the adjustment rod 51 to adjust the inclination angle between the flame detector 42 and the flame, thereby improving the detection accuracy of the flame detector 42.
[0011] Preferably, the connecting rod 53 includes a fixed tube 531, a telescopic rod 532 and a fastener 533. One end of the fixed tube 531 is fixedly connected to the adjusting block 52, and the other end is provided with an external thread on the outer wall. The end is provided with a plurality of axially extending strip openings 534 that penetrate the side wall, and the plurality of strip openings 534 are distributed at equal intervals along the circumference. The telescopic rod 532 is cylindrical, and the outer diameter of the telescopic rod 532 is the same as the inner diameter of the fixed tube 531.
[0012] The fastener 533 is cylindrical, and a truncated cone-shaped fastening cavity is provided inside the fastener 533 to connect the two end surfaces. The diameter of one end of the fastening cavity is the same as the outer diameter of the fixed cylinder 531, and the diameter of the other end is smaller than the outer diameter of the fixed cylinder 531 and larger than the outer diameter of the telescopic rod 532. An internal thread matching the external thread is provided on the inner wall of the fastening cavity; one end of the telescopic rod 532 is slidably sleeved inside the fixed cylinder 531, and a mounting block 54 is provided at the other end; the fastener 533 is sleeved on the fixed cylinder 531 through the internal thread on the fastening cavity and the external thread at the top of the fixed cylinder 531, so as to fix the telescopic rod 532 and the fixed cylinder 531.
[0013] The connecting rod 53 is provided to include a fixed tube 531, a telescopic rod 532 and a fastener 533. The telescopic rod 532 is inserted into the fixed tube 531 and fixed by the fastener 533. The length of the connecting rod 53 can be adjusted by rotating the fastener 533, so that the depth of the flame detector 42 inserted into the combustion chamber 2 can be adjusted, and the position and angle of the flame detector 42 in the combustion chamber 2 can be further adjusted to improve the detection accuracy of the flame detector 42. When adjusting the length of the connecting rod 53, the fastener 533 is rotated to move the fastener 533 in the direction away from the adjusting block 52, thereby reducing the pressure on the inside of the fixed tube 531, and the side wall at the end of the fixed tube 531 is ejected outward to loosen the telescopic rod 532, and then the telescopic rod 532 is moved to a suitable length, and finally the fastener 533 is twisted in the opposite direction to move the fastener 533 in the direction close to the adjusting block 52, thereby increasing the pressure on the inside of the fixed tube 531, and the side wall at the end of the fixed tube 531 is contracted inward under the pressure to clamp the telescopic rod 532 and fix it.
[0014] Preferably, it also includes a fastening bolt 55, and a first fixing hole matching the fastening bolt 55 is provided at the end of the telescopic rod 532 away from the adjusting rod 51; a second fixing hole matching the fastening bolt 55 is provided on the mounting block 54, and the fastening bolt 55 is inserted into the first fixing hole and the second fixing hole to fix the mounting block 54 to the telescopic rod 532.
[0015] By setting a first fixing hole on the telescopic rod 532 and a second fixing hole on the mounting block 54, the mounting block 54 is fixedly connected to the telescopic rod 532 by fastening bolts 55 through the first fixing hole and the second fixing hole. The inclination angle of the flame detector 42 can be adjusted according to the flame size and the inclination angle, so that the flame detector 42 faces the flame, thereby improving the detection accuracy of the flame detector 42.
[0016] Preferably, two detection ports 22 are provided on the combustion chamber 2, and the two detection ports 22 are respectively located on the left and right sides of the top of the combustion chamber 2. Two flame detection devices 4 are provided, and the two flame detection devices 4 are respectively provided at the two detection ports 22 on the combustion chamber 2.
[0017] By providing two flame detection devices 4, the flame in the combustion chamber 2 can be detected simultaneously, which can improve the accuracy of flame detection. Moreover, when one of the flame detection devices 4 fails and needs maintenance, the other flame detection device 4 can be used for flame detection without affecting the drying operation.
[0018] Preferably, it also includes a supporting device 6. The furnace body 1 includes a drying cylinder 11, a feeding cylinder 12 and a discharging cylinder 13. The feeding cylinder 12 is sleeved on the front end of the drying cylinder 11 and is rotatably connected to the drying cylinder 11. A feeding port 121 is provided on the upper part of the feeding cylinder 12. The discharging cylinder 13 is sleeved on the rear end of the drying cylinder 11 and is rotatably connected to the drying cylinder 11. A smoke outlet 132 is provided on the upper part of the discharging cylinder 13, and a discharging port 131 is provided on the bottom. The supporting device 6 includes a base 61, a supporting ring 62 and a rotating motor 63. The supporting ring 62 is sleeved on the drying cylinder 11 and is rotatably connected to the drying cylinder 11. The lower end is fixedly arranged on the base 61. The rotating motor 63 is fixedly arranged on the base 61 and is connected to the drying cylinder 11 for driving the drying cylinder 11 to rotate. Two supporting rings 62 are provided, and the two supporting rings 62 are respectively located on both sides of the rotating motor 63.
[0019] By providing the supporting device 6, the furnace body 1 is supported by the supporting ring 62, the furnace body 1 is rotatably connected to the supporting ring 62, and the rotating motor 63 is connected to the furnace body 1, so as to drive the drying cylinder 11 to rotate, thereby causing the material in the drying chamber to roll and break up, which can promote the rapid evaporation of water in the potash fertilizer wet material and improve the material drying efficiency.
[0020] Preferably, the rotating shaft of the rotating motor 63 is parallel to the axis of the drying cylinder 11, and a driving gear 64 is disposed on the rotating shaft of the rotating motor 63. The drying cylinder 11 is provided with a driven gear 14 that meshes with the driving gear 64 and surrounds the outer circumference of the drying cylinder 11.
[0021] Preferably, the inner wall of the drying cylinder 11 is provided with scattering blades 16. By providing the scattering blades 16 on the inner wall of the drying cylinder 11, when the material is dried, the scattering blades 16 scatter the material, thereby improving the drying efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 . Schematic diagram of the overall structure of the drying furnace;
[0023] Figure 2 .Schematic diagram of the internal structure of the drying furnace;
[0024] Figure 3 . Figure 2 Schematic diagram of the AA section structure;
[0025] Figure 4 .Schematic diagram of the overall structure of the bracket;
[0026] Figure 5 . Schematic diagram of the cross-sectional structure of the adjusting rod and the adjusting block;
[0027] Figure 6 .Schematic diagram of the connecting rod structure.
[0028] In the figure, 1. furnace body, 11. drying cylinder, 12. feeding cylinder, 121. feeding port, 13. discharging cylinder, 131. discharging port, 132. smoke outlet, 14. driven gear, 15. drying chamber, 16. scattering blades, 2. combustion chamber, 21. combustion chamber, 22. detection port, 23. air inlet, 3. burner, 31. burner nozzle, 4. flame detection device, 41. detection box, 411. box door, 42. flame detector, 5. bracket, 51. adjusting rod, 52. adjusting block, 521. adjusting hole, 522. adjusting threaded hole, 523. adjusting bolt, 53. connecting rod, 531. fixing cylinder, 532. telescopic rod, 533. fastener, 534. strip port, 54. mounting block, 55. fastening bolt, 6. supporting device, 61. base, 62 supporting ring, 63. rotating motor, 64. driving gear. DETAILED DESCRIPTION
[0029] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.
[0030] Figure 2 This is a vertical section view of the drying furnace facing the right side. The section position is referenced Figure 3 BB in.
[0031] like Figure 1 and Figure 2As shown, the drying furnace includes a furnace body 1, a combustion chamber 2, a burner 3, a flame detection device 4 and a supporting device 6. The furnace body 1 includes a drying cylinder 11, a feeding cylinder 12 and a discharging cylinder 13, and a drying cavity 15 is formed inside. The inner wall of the drying cylinder 11 is provided with scattering blades 16.
[0032] The feed barrel 12 is sleeved on the front end of the furnace body 1 , and is rotatably connected to the furnace body 1 , and is internally communicated. A feed port 121 is provided on the upper portion of the feed barrel 12 , and the bottom is fixedly connected to the base 61 .
[0033] The discharge barrel 13 is sleeved on the rear end of the furnace body 1 and is rotatably connected to the furnace body 1 and is internally connected. A smoke outlet 132 is provided on the upper part of the discharge barrel 13 and a discharge outlet 131 is provided on the bottom. The discharge barrel 13 is fixedly connected to the base 61 .
[0034] The combustion chamber 2 is arranged at the front end of the feed barrel 12. Two detection ports 22 are arranged at the top of the combustion chamber 2. An air inlet 23 is arranged at the front side. A combustion chamber 21 is formed inside the combustion chamber 2. The combustion chamber 21 is connected to the drying chamber 15. The hot air generated in the combustion chamber 2 enters the drying chamber 15. The two detection ports 22 are arranged at the left and right sides of the top of the combustion chamber 2. Figure 3 .
[0035] The air inlet 23 is used to communicate with the fan to blow air into the combustion chamber.
[0036] The burner 3 is fixedly arranged on the front side of the combustion chamber 2, and the burner nozzle 31 of the burner 3 is inserted into the combustion chamber 21. The burner 3 is used to be connected with the gas pipeline and the combustion-supporting fan. The flame formed by burning natural gas is sprayed into the combustion chamber 21 through the burner nozzle 31, and the air in the combustion chamber 21 is heated to form hot air which is blown into the drying chamber.
[0037] The support device 6 includes a base 61, a support ring 62 and a rotating motor 63. The support ring 62 is sleeved on the furnace body 1 and is rotatably connected to the furnace body 1. The lower end is fixedly arranged on the base 61. Two support rings 62 are provided, and the two support rings 62 are respectively located at the front and rear sides of the rotating motor 63.
[0038] The rotating motor 63 is fixedly arranged on the base 61, and the rotating shaft of the rotating motor 63 is parallel to the axis of the furnace body 1. A driving gear 64 is arranged on the rotating shaft of the rotating motor 63, and a driven gear 14 surrounding the outer circumference of the furnace body 1 is arranged on the furnace body 1, and the driven gear 14 is meshed with the driving gear 64. When the rotating motor 63 rotates, it can drive the drying cylinder 11 to rotate.
[0039] The supporting device 6 can support the furnace body 1. When the base 61 is installed, the furnace body 1 is kept at a certain tilt angle, so that the front end of the furnace body 1 is higher than the rear end, so that the material gradually rolls from the feed port 121 to the discharge port 131 during rotation. When the rotating motor 63 rotates, the drying cylinder 11 can be driven to rotate, so that the potash fertilizer wet material in the drying chamber rolls, and the potash fertilizer wet material is broken up by the breaking blades 16 on the inner wall of the furnace body 1, which can promote the rapid evaporation of water in the potash fertilizer wet material and improve the drying efficiency of the potash fertilizer wet material.
[0040] like Figure 3 and Figure 4 As shown, the flame detection device 4 includes a detection box 41, a bracket 5 and a flame detector 42. The detection box 41 is fixedly arranged on the combustion chamber 2 and covered outside the detection port 22. The detection box 41 is provided with a box door 411, and the box door 411 can be opened or closed. By opening the box door 411, the bracket 5 can be operated, the position of the flame detector 42 can be adjusted, and the flame detector 42 can be cleaned or replaced.
[0041] The bracket 5 includes an adjusting rod 51 , an adjusting block 52 , an adjusting bolt 523 and a connecting rod 53 . The adjusting rod 51 is arranged in the detection box 41 , and both ends are fixedly connected to the inner wall of the detection box 41 . The adjusting rod 51 is parallel to the axis of the furnace body 1 .
[0042] The adjusting block 52 is provided with an adjusting hole 521 matching the adjusting rod 51, and the side is provided with an adjusting threaded hole 522 connected to the adjusting hole 521 and matching the adjusting bolt 523. The adjusting block 52 is sleeved on the adjusting rod 51, and the adjusting bolt 523 is arranged in the adjusting threaded hole 522 to fix the adjusting block 52. Figure 5 .
[0043] The adjusting block 52 is provided with an adjusting hole 521 matching the adjusting rod 51, wherein the matching means that the diameter of the adjusting hole 521 and the cross section is equal to or slightly larger than the diameter of the adjusting rod 51, so that the adjusting block 52 can be sleeved on the adjusting rod 51, and can slide in the left and right directions along the adjusting rod 51, or rotate along the adjusting rod 51.
[0044] An adjusting threaded hole 522 connected to the adjusting hole 521 and matching with the adjusting bolt 523 is provided on the side of the adjusting block 52, wherein the matching means that the diameter of the adjusting threaded hole 522 is the same as that of the adjusting bolt 523, and the pitch and tooth angle of the internal thread on the adjusting threaded hole 522 are the same as those of the external thread of the adjusting bolt 523, so that the adjusting bolt 523 can be inserted into the adjusting threaded hole 522, and the adjusting block 52 can be fixed to the adjusting rod 51 by rotating the adjusting bolt 523.
[0045] By loosening the adjusting bolt 523, the adjusting block 52 can be slid along the adjusting rod 51 in the front-to-rear direction to adjust the distance between the flame detector 42 and the burner 31, that is, to adjust the distance between the flame detector 42 and the flame ejected from the burner 31, or the adjusting block 52 can be rotated along the adjusting rod 51 to adjust the inclination angle between the flame detector 42 and the flame.
[0046] One end of the connecting rod 53 is connected to the adjustment block 52 , and the other end extends toward the combustion chamber 2 . A mounting block 54 is provided at the end, and the flame detector 42 is fixedly provided on the mounting block 54 .
[0047] The connecting rod 53 includes a fixed tube 531, a telescopic rod 532 and a fastener 533. One end of the fixed tube 531 is fixedly connected to the adjustment block 52, and the other end is provided with an external thread on the outer wall. The end is provided with a plurality of strip openings 534 extending axially and penetrating the side wall. The plurality of strip openings 534 are evenly spaced along the circumference. Figure 6 .
[0048] The telescopic rod 532 is cylindrical, and its outer diameter is the same as the inner diameter of the fixed tube 531. The fastener 533 is cylindrical, and a truncated cone-shaped fastening cavity connecting the two end surfaces of the fastener 533 is provided inside. The diameter of one end of the fastening cavity is the same as the outer diameter of the fixed tube 531, and the diameter of the other end is smaller than the outer diameter of the fixed tube 531 and larger than the outer diameter of the telescopic rod 532.
[0049] The inner wall of the fastening cavity is provided with an internal thread matching the external thread, one end of the telescopic rod 532 is slidably sleeved inside the fixed cylinder 531, and the other end is provided with a mounting block 54. The fastener 533 is sleeved on the upper end of the fixed cylinder 531 through the internal thread on the fastening cavity and the external thread at the top of the fixed cylinder 531.
[0050] An internal thread matching the external thread is provided on the inner wall of the fastening cavity, wherein the matching means that the pitch and tooth angle of the internal thread on the inner wall of the fastening cavity are the same as those of the external thread on the fixed cylinder 531, so that the fastener 533 can be sleeved on the fixed cylinder 531. The fastener 533 can be fixed to the fixed cylinder 531 by matching the internal thread on the fastener 533 with the external thread on the fixed cylinder 531.
[0051] By rotating the fastener 533 , the length of the connecting rod 53 can be adjusted, so that the position of the flame detector 42 in the combustion chamber 2 can be adjusted to make the distance and angle between the flame detector 42 and the flame appropriate, thereby improving the detection accuracy of the flame detector 42 .
[0052] When adjusting the length of the connecting rod 53, the fastener 533 is rotated to move the fastener 533 in the direction away from the adjusting block 52, thereby reducing the pressure on the inside of the fixed tube 531, and the side wall at the end of the fixed tube 531 is ejected outward to loosen the telescopic rod 532, and then the telescopic rod 532 is moved to a suitable length, and finally the fastener 533 is twisted in the opposite direction to move the fastener 533 in the direction close to the adjusting block 52, thereby increasing the pressure on the inside of the fixed tube 531, and the side wall at the end of the fixed tube 531 is contracted inward under the pressure to clamp the telescopic rod 532 and fix it.
[0053] Two flame detection devices 4 are provided, and the two flame detection devices 4 are respectively provided at two detection ports 22 on the combustion chamber 2. By providing two flame detection devices 4, the flame in the combustion chamber 2 can be detected at the same time, which can improve the accuracy of flame detection, and when one of the flame detection devices 4 fails to be repaired, the other flame detection device 4 is used for flame detection without affecting the drying operation.
[0054] The flame detectors 42 on the two flame detection devices 4 can be set as needed. The two flame detectors 42 can be set the same or differently. For example, one is set with an ultraviolet detector and the other is set with an ultraviolet detector, an infrared detector or an ultraviolet / infrared mixed detector, or one is set with an infrared detector and the other is set with an infrared detector or an ultraviolet / infrared mixed detector.
[0055] The mounting block 54 is provided with a second fixing hole matching the fastening bolt 55, and the end of the telescopic rod 532 away from the adjusting rod 51 is provided with a first fixing hole matching the fastening bolt 55. The fastening bolt 55 is inserted into the first fixing hole and the second fixing hole to fix the mounting block 54 and the telescopic rod 532.
[0056] A first fixing hole matching with the fastening bolt 55 is provided at one end of the telescopic rod 532 away from the adjusting rod 51, wherein matching means that the diameter of the first fixing hole is equal to or slightly larger than the diameter of the fastening bolt 55, so that the fastening bolt 55 can be inserted into the first fixing hole and slide in the first fixing hole.
[0057] The mounting block 54 is provided with a second fixing hole matching with the fastening bolt 55 , wherein matching means that the diameter of the second fixing hole is equal to or slightly larger than the diameter of the fastening bolt 55 , so that the fastening bolt 55 can be inserted into the second fixing hole and slide in the second fixing hole.
[0058] By fixing the mounting block 54 and the telescopic rod 532 by fastening bolts 55 , the inclination angle of the flame detector 42 can be adjusted according to the flame size and the inclination angle, so that the flame detector 42 faces the flame, thereby improving the detection accuracy of the flame detector 42 .
[0059] When the utility model is used, the flame size and the tilt angle of the burner 3 are first tested, and the positions and angles of the two flame detectors 42 are adjusted. When adjusting, the box door 411 on the detection box 41 is opened, and the angle of the mounting block 54, the length of the connecting rod 53, and the position of the adjusting block 52 on the adjusting rod 51 are adjusted respectively, so that the distance between the flame detector 42 and the flame is appropriate and the angle is aligned, and then the box door 411 is closed. After the adjustment of the flame detector 42 is completed, the drying operation can be carried out.
[0060] When the potash fertilizer wet material is dried, the potash fertilizer wet material enters the drying chamber 15 from the feed port 121, and the drying cylinder 11 is driven to rotate by the rotating motor 63. The potash fertilizer wet material in the drying chamber 15 is continuously rolled and scattered under the action of the scattering blades 16, and continuously moves to the rear side of the drying chamber 15. At the same time, the air heated by the flame burner 3 forms hot air and enters the drying chamber 15 from the combustion chamber 2 to heat the potash fertilizer wet material, promote the rapid evaporation of the water in the potash fertilizer wet material, and make the potash fertilizer wet material dry quickly. The generated moisture and smoke are discharged from the smoke outlet 132 with the hot air and then processed, and the dried material is discharged from the discharge port 131.
[0061] The utility model provides a flame detection device 4, a detection port 22 is provided on the combustion chamber 2, a detection box 41 is provided at the detection port 22, an adjustment rod 51 is provided in the detection box 41, an adjustment block 52 is slidably provided on the adjustment rod 51, and the adjustment block 52 can be moved on the adjustment rod 51 by screwing the adjustment bolt 523 to adjust the distance between the flame detector 42 and the burner 31, that is, to adjust the distance between the flame detector 42 and the flame ejected from the burner 31, or the adjustment block 52 is rotated along the adjustment rod 51 to adjust the inclination angle between the flame detector 42 and the flame, thereby improving the detection accuracy of the flame detector 42.
[0062] The connecting rod 53 is provided to include a fixed tube 531, a telescopic rod 532 and a fastener 533. The telescopic rod 532 is inserted into the fixed tube 531 and fixed by the fastener 533. The length of the connecting rod 53 can be adjusted by rotating the fastener 533, so that the depth of the flame detector 42 inserted into the combustion chamber 2 can be adjusted, and the position and angle of the flame detector 42 in the combustion chamber 2 can be further adjusted to improve the detection accuracy of the flame detector 42.
[0063] The telescopic rod 532 is fixedly connected to the mounting block 54 by a fastening bolt 55, and the inclination angle of the mounting block 54 can be adjusted, thereby adjusting the inclination angle of the flame detector 42, so that the flame detector 42 faces the flame, thereby improving the detection accuracy of the flame detector 42. Two flame detection devices 4 are provided, so that the flame in the combustion chamber 2 can be detected at the same time, which can improve the flame detection accuracy. Moreover, when one of the flame detection devices 4 fails to be repaired, the other flame detection device 4 can be used for flame detection without affecting the drying operation.
[0064] By providing a supporting device 6, the furnace body 1 is supported by a supporting ring 62, the furnace body 1 is rotatably connected to the supporting ring 62, and the rotating motor 63 is connected to the furnace body 1, so as to drive the drying cylinder 11 to rotate. Breaking blades 16 are provided on the inner wall of the drying cylinder 11. When the drying cylinder 11 rotates, the materials are broken up by the breaking blades 16, so as to promote the rapid evaporation of water in the potash fertilizer wet material and improve the material drying efficiency.
[0065] It should be noted that the above-mentioned embodiments illustrate rather than limit the invention and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims.
Claims
1. A drying furnace, characterized in that: It comprises a furnace body (1), a combustion chamber (2), a burner (3) and a flame detection device (4). The furnace body (1) is provided with a material inlet (121), a material outlet (131), and a smoke outlet (132), and a drying chamber (15) is formed inside; The combustion chamber (2) is arranged at the front end of the furnace body (1), and has a combustion chamber (21) formed therein that is connected to the drying chamber (15). A detection port (22) is arranged on the combustion chamber (2); The burner (3) is arranged on the combustion chamber (2), and the burner nozzle (31) of the burner (3) is inserted into the combustion cavity (21); The flame detection device (4) comprises a detection box (41), a bracket (5) and a flame detector (42). The detection box (41) is fixedly arranged on the combustion chamber (2) and is covered outside the detection port (22). The detection box (41) is provided with a box door (411); The bracket (5) comprises an adjusting rod (51), an adjusting block (52), an adjusting bolt (523) and a connecting rod (53). The adjusting rod (51) is fixedly arranged in the detection box (41) and is parallel to the axis of the furnace body (1); The adjusting block (52) is provided with an adjusting hole (521) matching with the adjusting rod (51), and a side surface is provided with an adjusting threaded hole (522) communicating with the adjusting hole (521) and matching with the adjusting bolt (523); The adjusting block (52) is sleeved on the adjusting rod (51), and the adjusting bolt (523) is arranged in the adjusting threaded hole (522) to fix the adjusting block (52); One end of the connecting rod (53) is connected to the regulating block (52), and the other end extends toward the combustion chamber (2), with a mounting block (54) being provided at the end; The flame detector (42) is fixedly mounted on a mounting block (54).
2. The drying oven according to claim 1, characterized in that: The connecting rod (53) comprises a fixing tube (531), a telescopic rod (532) and a fastener (533). One end of the fixed cylinder (531) is fixedly connected to the adjustment block (52), and the outer wall of the other end is provided with an external thread, and the end is provided with a plurality of strip openings (534) extending axially and penetrating the side wall, and the plurality of strip openings (534) are distributed at equal intervals along the circumference; The telescopic rod (532) is cylindrical, and the outer diameter of the telescopic rod (532) is the same as the inner diameter of the fixed tube (531); The fastener (533) is cylindrical, and has a truncated cone-shaped fastening cavity in the interior thereof, which is connected to both end surfaces of the fastener (533); the diameter of one end of the fastening cavity is the same as the outer diameter of the fixing tube (531), and the diameter of the other end is smaller than the outer diameter of the fixing tube (531) and larger than the outer diameter of the telescopic rod (532); An internal thread matching the external thread is provided on the inner wall of the fastening cavity; One end of the telescopic rod (532) is slidably sleeved inside the fixed tube (531), and the other end is provided with a mounting block (54); The fastener (533) is sleeved on the fixing tube (531) through the internal thread on the fastening cavity and the external thread on the top of the fixing tube (531), thereby fixing the telescopic rod (532) and the fixing tube (531).
3. The drying oven according to claim 2, characterized in that: Also includes a fastening bolt (55), One end of the telescopic rod (532) away from the adjusting rod (51) is provided with a first fixing hole matching with the fastening bolt (55); The mounting block (54) is provided with a second fixing hole matching the fastening bolt (55); The fastening bolt (55) is inserted into the first fixing hole and the second fixing hole to fix the mounting block (54) and the telescopic rod (532).
4. The drying oven according to claim 3, characterized in that: The combustion chamber (2) is provided with two detection ports (22). The two detection ports (22) are respectively located on the left and right sides of the top of the combustion chamber (2); Two flame detection devices (4) are provided, and the two flame detection devices (4) are respectively arranged at two detection ports (22) on the combustion chamber (2).
5. The drying oven according to claim 4, characterized in that: It also includes a supporting device (6), The furnace body (1) comprises a drying cylinder (11), a feeding cylinder (12) and a discharging cylinder (13); the feeding cylinder (12) is sleeved on the front end of the drying cylinder and is rotatably connected to the drying cylinder (11); a feeding port (121) is provided on the upper part of the feeding cylinder (12); The discharge cylinder (13) is sleeved on the rear end of the drying cylinder (11) and is rotatably connected to the drying cylinder (11). The upper part of the discharge cylinder (13) is provided with a smoke outlet (132), and the bottom part is provided with a discharge port (131); The supporting device (6) comprises a base (61), a supporting ring (62) and a rotating motor (63). The support ring (62) is sleeved on the drying cylinder (11), is rotatably connected to the drying cylinder (11), and has a lower end fixedly disposed on the base (61); The rotating motor (63) is fixedly mounted on the base (61), connected to the drying cylinder (11), and used for rotating the drying cylinder (11); Two support rings (62) are provided, and the two support rings (62) are respectively located on both sides of the rotating motor (63).
6. The drying oven according to claim 5, characterized in that: The rotating shaft of the rotating motor (63) is parallel to the axis of the drying cylinder (11), and a driving gear (64) is arranged on the rotating shaft of the rotating motor (63); The drying cylinder (11) is provided with a driven gear (14) which is meshed with the driving gear (64) and surrounds the outer peripheral surface of the drying cylinder (11).
7. The drying oven according to claim 5 or 6, characterized in that: The inner side wall of the drying cylinder (11) is provided with scattering blades (16).