A secondary kiln calcining equipment based on ceramsite proppant

Abstract

The invention discloses a secondary kiln calcining device based on ceramsite proppants. The calcining tube is connected with guide tubes on all sides. By arranging a calcining mechanism, flame spraying is firstly performed on the calcining tube to achieve the purpose of providing sufficient heat for the ceramsite proppants that are calcined in the kiln for the second time. Then, the heat generated by the flame spraying of the calcining tube is evenly blown into the kiln tube to make the heat evenly distributed in the kiln tube, thereby improving the temperature requirement of the ceramsite proppants that are calcined in the kiln for the second time. By arranging a rotary screening mechanism, the kiln tube is rotated at a uniform speed to make the ceramsite proppants that are calcined in the kiln for the second time in full contact with the evenly distributed heat, thereby achieving the purpose of uniform calcination and improving the finished product quality of the ceramsite proppants that are calcined in the kiln for the second time. By arranging an adjusting mechanism, the inclination angles of the calcining tube and the kiln tube are adjusted to meet the demand for rapid calcination and material discharge of the ceramsite proppants that are calcined in the kiln for the second time, thereby improving the secondary kiln calcination efficiency of the ceramsite proppants.

Description

Technical Field

[0001] The invention relates to the technical field of ceramsite proppant manufacturing equipment, in particular to a ceramsite proppant secondary kiln calcining equipment. Background Art

[0002] Ceramic granulate proppants are widely used in oil extraction processes. Ceramic granulate proppants refer to natural sand or artificial high-strength ceramic particles with a certain particle size and grading. They are made of bauxite through powder granulation and sintering. They have the characteristics of high temperature resistance, high pressure resistance, corrosion resistance, high strength, high conductivity, low density, and low breakage rate. They are the most widely used.

[0003] After the ceramsite proppant is calcined once, in order to obtain ceramsite proppant with higher quality, it needs to be calcined again in the kiln. The existing secondary kiln calcination equipment generally adopts the same method as the first calcination process for calcination, but the temperature control is slightly different. It is impossible to use a combination of gas ignition and wind blowing to evenly heat the secondary kiln calcination equipment, and the heat balanced distribution requirement for the secondary kiln calcination of ceramsite proppant cannot be met. At the same time, the ceramsite proppant in the secondary kiln calcination equipment cannot be rotated at a low speed, which reduces the contact area between the ceramsite proppant and the heat, and directly reduces the quality of the secondary calcination of the ceramsite proppant. For this reason, a secondary kiln calcination equipment based on ceramsite proppant is proposed. Summary of the invention

[0004] The purpose of the present invention is to provide a secondary kiln calcination equipment based on expanded clay proppants, so as to solve the problem proposed in the above-mentioned background technology that the secondary kiln calcination equipment cannot be evenly heated by combining gas ignition and wind blowing, and the heat balanced distribution requirement for the secondary kiln calcination of expanded clay proppants cannot be achieved. At the same time, the expanded clay proppants in the secondary kiln calcination equipment cannot be rotated at a low speed, which reduces the contact area between the expanded clay proppants and the heat, resulting in poor quality.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a ceramsite proppant secondary kiln calcining equipment, comprising a calcining tube, the calcining tube is connected with a guide tube on all sides, the tail end of the calcining tube is connected with a large stop valve, the other end of the large stop valve is connected with a kiln tube, a charging hopper is arranged on the left side of the top of the kiln tube, the tail end of the kiln tube is connected with a kiln tail discharge tube, a cleaning port is opened on the front of the kiln tail discharge tube and a cleaning cover is arranged on the front of the cleaning port, and the inner cavity of the calcining tube is provided with a calcining mechanism used in conjunction with the kiln tube;

[0006] A fixed box is arranged below the kiln drum, and a rotating screening mechanism used in conjunction with the kiln drum is arranged in the inner cavity of the fixed box;

[0007] A mounting frame is arranged below the fixing box, and an inner cavity of the mounting frame is provided with an adjusting mechanism used in conjunction with the calcining tube and the kiln tube.

[0008] Preferably, the calcining mechanism includes a flamethrower, which is fixed at the head end of the calcining tube and an igniter is embedded in the front of the flamethrower, a gas leakage sensor is embedded in the top of the flamethrower, the outlet of the flamethrower is connected to a flamethrower hood and flow holes for use with the calcining tube are provided around the flamethrower, the outer end of the inner cavity of the guide tube is fixedly connected to an electric blower fan and the inner end of the guide tube is connected to a one-way valve, the other end of the one-way valve is connected to the inner cavity of the kiln tube, and a temperature sensor is embedded on the left side of the front of the kiln tube.

[0009] Preferably, the rotary screening mechanism includes a sealing rotary sleeve, which is arranged at the inner end of the large stop valve and the kiln barrel and has annular rotary grooves on both sides of the inner cavity of the sealing rotary sleeve, and the inner cavities of the two groups of the rotary grooves are rotatably connected with convex rings fixedly matched with the large stop valve and the kiln barrel, and the two sides of the kiln barrel are fixedly connected with annular rack frames, the left side of the fixed box is fixedly connected with a servo motor and the output shaft of the servo motor is fixedly connected with a reducer and a driving gear from left to right in sequence, the top of the driving gear is meshed with the bottom of the annular rack frame, and the interlayer of the kiln tail lower barrel is fixedly connected with an annular screen frame.

[0010] Preferably, the adjustment mechanism includes a T-shaped slide groove, two groups of the T-shaped slide grooves are transversely opened in the inner cavity of the mounting frame, a stepper motor is fixedly connected to the right side of the mounting frame and the output shaft of the stepper motor is fixedly connected to a lead screw, the surface of the lead screw is threadedly connected to a threaded barrel and the outer side of the threaded barrel is fixedly connected to an adjustment seat, the adjustment seat is fixedly connected with T-shaped sliders slidably matched with the T-shaped slide grooves on all sides, and the top of the adjustment seat is hinged with an adjustment frame hingedly matched with the calcination barrel.

[0011] Preferably, the top of the flamethrower is connected to a gas injection port and a sealing cap is provided on the top of the gas injection port.

[0012] Preferably, the sealing sleeve is fixedly connected with a thickened sealing ring near the large stop valve and the kiln tube.

[0013] Preferably, guide blocks are fixedly connected to the inner cavity of the guide tube near the electric blower fan on all sides, and guide holes are formed in the inner cavity of the guide block.

[0014] Preferably, annular grooves are provided on both sides of the kiln tube, and the inner cavity of the annular groove is rotatably connected to a limiting ring fixedly matched with the fixing box.

[0015] Preferably, a support frame fixedly matched with the mounting frame is hinged on the right side of the bottom of the fixed box, and the left side of the fixed box is fixedly connected with limit rods in sequence from front to back, and the front and rear sides of the mounting frame are fixedly connected with limit frames slidably matched with the limit rods.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. In the present invention, by setting a calcining mechanism, the flame spray is performed on the calcining tube by the cooperation of a flamethrower, an igniter, a gas leakage sensor, a flame spray hood and a flow hole, so as to provide sufficient heat for the ceramsite proppant that is returned to the kiln for secondary calcination in the kiln tube. Then, the heat generated by the flame spray of the calcining tube is evenly blown into the kiln tube by the cooperation of an electric blower fan, a one-way valve and a temperature sensor, so that the heat is evenly distributed in the kiln tube, and the temperature requirement of the ceramsite proppant that is returned to the kiln for secondary calcination is improved. By setting a rotary screening mechanism, the servo motor provides a driving source, and then the sealing rotating sleeve, the rotating groove, the convex ring, the annular rack frame , reducer, driving gear and annular screen frame cooperate to rotate the kiln barrel at a uniform speed, so that the ceramsite proppant calcined in the kiln barrel for the second time is in full contact with the evenly distributed heat, so as to achieve the purpose of uniform calcination and improve the quality of the finished product of the ceramsite proppant calcined in the kiln for the second time. By setting an adjustment mechanism, a stepper motor provides a driving source, and then the T-type slide, screw rod, threaded barrel, adjustment seat, T-type slider and adjustment frame cooperate to adjust the inclination angle of the calcination barrel and the kiln barrel, so as to meet the demand for rapid calcination and feeding of the ceramsite proppant calcined in the kiln for the second time, and improve the efficiency of the secondary calcination of the ceramsite proppant.

[0018] 2. In the present invention, the gas injection port and the sealing cap facilitate the staff to continuously inject gas fuel into the flamethrower to avoid flame interruption due to loss of fuel. By thickening the sealing ring, when the kiln barrel is in a uniform rotation state, the sealing performance between the sealing sleeve and the large stop valve and the kiln barrel is improved to prevent the ceramsite proppant in the kiln barrel from leaking from the sealing sleeve position.

[0019] 3. In the present invention, the wind force generated by the electric blower fan is made to reach the kiln tube evenly through the guide block and the guide hole, so as to prevent the air flow inside the guide tube from being turbulent and improve the air outlet efficiency in the guide tube. The annular groove and the limit ring are used to provide limit support compensation for the kiln tube rotating at a uniform speed, so as to improve the rotation stability of the kiln tube. When the angles of the calcining tube and the kiln tube are adjusted, the support frame, the limit rod and the limit frame are used to perform limit compensation between the calcining tube and the kiln tube and the fixed box, so as to improve the stability of the calcining tube and the kiln tube during the angle adjustment process.

[0020] The present invention provides a calcining mechanism, firstly performs flame spraying on the calcining tube, so as to achieve the purpose of providing sufficient heat for the ceramsite proppant that is calcined in the kiln tube for the second time, and then blows the heat generated by the flame spraying of the calcining tube into the kiln tube evenly, so that the heat is evenly distributed in the kiln tube, and the temperature requirement of the ceramsite proppant that is calcined in the kiln tube for the second time is improved; by providing a rotary screening mechanism, the kiln tube is rotated at a uniform speed, so that the ceramsite proppant that is calcined in the kiln tube for the second time is fully in contact with the evenly distributed heat, so as to achieve the purpose of uniform calcination and improve the finished product quality of the ceramsite proppant that is calcined in the kiln tube for the second time; by providing an adjusting mechanism, the inclination angles of the calcining tube and the kiln tube are adjusted, so as to meet the demand for rapid calcination and material discharge of the ceramsite proppant that is calcined in the kiln tube for the second time, and improve the efficiency of the calcination of the ceramsite proppant that is calcined in the kiln tube for the second time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 It is a structural side view of the present invention;

[0023] Figure 3 It is a partial front view of the structure of the present invention;

[0024] Figure 4 It is a structural cross-sectional view of the calcining tube and the guide tube of the present invention;

[0025] Figure 5 It is a partial cross-sectional view of the structure of the sealing rotating sleeve of the present invention;

[0026] Figure 6 It is a partial front cross-sectional view of the structure of the kiln tube of the present invention;

[0027] Figure 7 It is a partial top view of the structure of the mounting frame of the present invention.

[0028] In the figure: 1. calcining tube; 2. guide tube; 3. large stop valve; 4. kiln tube; 5. kiln tail discharge tube; 6. calcining mechanism; 61. flamethrower; 62. igniter; 63. gas leakage sensor; 64. flamethrower hood; 65. flow hole; 66. electric blower fan; 67. one-way valve; 68. temperature sensor; 7. fixed box; 8. rotary screening mechanism; 81. sealing sleeve; 82. rotating groove; 83. convex ring; 84. annular rack; 85. servo motor; 86. reducer; 87. driving gear; 88. annular screen frame; 9. mounting frame; 10. adjustment mechanism; 101. T-type slide groove; 102. stepping motor; 103. screw rod; 104. threaded tube; 105. adjustment seat; 106. T-type slider; 107. adjustment frame; 11. guide block; 12. limit ring; 13. support frame. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Example 1

[0031] See also Figure 1-Figure 7 The present invention provides a technical solution: a secondary kiln calcining device based on ceramsite proppant, comprising a calcining tube 1, the calcining tube 1 is connected with a guide tube 2 on all sides, the tail end of the calcining tube 1 is connected with a large stop valve 3, the other end of the large stop valve 3 is connected with a kiln tube 4, a charging hopper is arranged on the left side of the top of the kiln tube 4, the tail end of the kiln tube 4 is connected with a kiln tail discharge tube 5, a cleaning port is opened on the front of the kiln tail discharge tube 5 and a cleaning cover is arranged on the front of the cleaning port, and the inner cavity of the calcining tube 1 is provided with a calcining mechanism 6 used in conjunction with the kiln tube 4 , by setting up the calcining mechanism 6, the flame spraying is performed on the calcining tube 1 by the cooperation of the flame sprayer 61, the igniter 62, the gas leakage sensor 63, the flame spraying hood 64 and the channeling hole 65, so as to provide sufficient heat for the ceramsite proppant that is returned to the kiln for secondary calcination in the kiln tube 4, and then the heat generated by the flame spraying of the calcining tube 1 is evenly blown into the kiln tube 4 by the cooperation of the electric blower fan 66, the one-way valve 67 and the temperature sensor 68, so that the heat is evenly distributed in the kiln tube 4, thereby improving the temperature requirement of the ceramsite proppant that is returned to the kiln for secondary calcination;

[0032] A fixed box 7 is provided below the kiln tube 4, and a rotating screening mechanism 8 used in conjunction with the kiln tube 4 is provided in the inner cavity of the fixed box 7. By providing the rotating screening mechanism 8, a servo motor 85 provides a driving source, and then the sealing rotating sleeve 81, the rotating groove 82, the convex ring 83, the annular rack 84, the reducer 86, the driving gear 87 and the annular screen frame 88 cooperate to rotate the kiln tube 4 at a uniform speed, so that the ceramsite proppant calcined for the second time in the kiln tube 4 is fully in contact with the evenly distributed heat, so as to achieve the purpose of uniform calcination and improve the finished product quality of the ceramsite proppant calcined for the second time;

[0033] A mounting frame 9 is provided below the fixed box 7, and an inner cavity of the mounting frame 9 is provided with an adjusting mechanism 10 used in conjunction with the calcining tube 1 and the kiln tube 4. By setting the adjusting mechanism 10, a stepping motor 102 provides a driving source, and then the T-shaped slide 101, the screw rod 103, the threaded tube 104, the adjusting seat 105, the T-shaped slider 106 and the adjusting frame 107 cooperate to adjust the inclination angle of the calcining tube 1 and the kiln tube 4, so as to meet the demand for rapid calcination and discharge of the ceramsite proppant for secondary kiln calcination, and improve the secondary calcination efficiency of the ceramsite proppant.

[0034] Example 2

[0035] See also Figure 1-Figure 7The present invention provides a technical solution: a secondary kiln calcining device based on ceramsite proppant, comprising a calcining tube 1, the calcining tube 1 is connected with a guide tube 2 on all sides, the tail end of the calcining tube 1 is connected with a large stop valve 3, the other end of the large stop valve 3 is connected with a kiln tube 4, a charging hopper is arranged on the left side of the top of the kiln tube 4, the tail end of the kiln tube 4 is connected with a kiln tail discharge tube 5, a cleaning port is arranged on the front of the kiln tail discharge tube 5 and a cleaning cover is arranged on the front of the cleaning port, the inner cavity of the calcining tube 1 is provided with a calcining mechanism 6 used in conjunction with the kiln tube 4, and the calcining The burning mechanism 6 includes a flamethrower 61, which is fixed to the head end of the calcining tube 1 and an igniter 62 is embedded in the front of the flamethrower 61. The top of the flamethrower 61 is connected to a gas injection port and a sealing cap is provided on the top of the gas injection port, so that the staff can continuously inject gas fuel into the flamethrower 61 to avoid the flamethrower 61 losing fuel and causing flame interruption. A gas leakage sensor 63 is embedded in the top of the flamethrower 61, and the outlet of the flamethrower 61 is connected to a flamethrower hood 64 and the flamethrower hood 64 is provided with a gas leak sensor 63 on all sides to cooperate with the calcining tube 1. The flow hole 65 used, the outer end of the inner cavity of the guide tube 2 is fixedly connected with an electric blower fan 66 and the inner end of the guide tube 2 is connected with a one-way valve 67. The inner cavity of the guide tube 2 near the electric blower fan 66 is fixedly connected with a guide block 11 on all sides. The inner cavity of the guide block 11 is provided with a guide hole, so that the wind generated by the electric blower fan 66 can reach the kiln tube 4 evenly, prevent the air flow inside the guide tube 2 from being turbulent, and improve the air outlet efficiency in the guide tube 2. The other end of the one-way valve 67 is connected with the inner cavity of the kiln tube 4, and a temperature sensor is embedded on the left side of the front of the kiln tube 4. 68, by setting the calcining mechanism 6, the flame spraying device 61, the igniter 62, the gas leakage sensor 63, the flame spraying hood 64 and the channeling hole 65 cooperate to spray the calcining tube 1 with flame, so as to provide sufficient heat for the ceramsite proppant that is calcined in the kiln tube 4 for the second time, and then the heat generated by the flame spraying of the calcining tube 1 is evenly blown into the kiln tube 4 by the cooperation of the electric blower fan 66, the one-way valve 67 and the temperature sensor 68, so that the heat is evenly distributed in the kiln tube 4, thereby improving the temperature requirement of the ceramsite proppant that is calcined in the kiln for the second time;A fixed box 7 is arranged below the kiln barrel 4. Both sides of the kiln barrel 4 are provided with annular grooves, and the inner cavity of the annular grooves is rotatably connected with a limit ring 12 fixedly matched with the fixed box 7, providing limit support compensation for the kiln barrel 4 under uniform rotation, thereby improving the rotation stability of the kiln barrel 4. The right side of the bottom of the fixed box 7 is hinged with a support frame 13 fixedly matched with the mounting frame 9, and the left side of the fixed box 7 is fixedly connected with the limit rod from front to back in sequence. The front and rear sides of the mounting frame 9 are fixedly connected with limit frames slidably matched with the limit rod, and the angle of the calcining barrel 1 and the kiln barrel 4 is adjusted. In order to save time, the calcining tube 1 and the kiln tube 4 are limited and compensated with the fixed box 7 to improve the stability of the calcining tube 1 and the kiln tube 4 during the angle adjustment process. The inner cavity of the fixed box 7 is provided with a rotary screening mechanism 8 used in conjunction with the kiln tube 4. The rotary screening mechanism 8 includes a sealing rotating sleeve 81. The sealing rotating sleeve 81 is arranged at the inner end of the large stop valve 3 and the kiln tube 4, and the two sides of the inner cavity of the sealing rotating sleeve 81 are annularly provided with rotating grooves 82. The sealing rotating sleeve 81 is fixedly connected with a thickened sealing ring near the large stop valve 3 and the kiln tube 4. When the kiln tube 4 is in a uniform rotation, the sealing rotating sleeve 81 is fixedly connected with the kiln tube 4. In the state, the sealing performance between the sealing sleeve 81 and the large stop valve 3 and the kiln tube 4 is improved to prevent the ceramsite proppant in the kiln tube 4 from leaking from the sealing sleeve 81. The inner cavities of the two sets of rotating grooves 82 are rotatably connected with convex rings 83 fixedly matched with the large stop valve 3 and the kiln tube 4. The two sides of the kiln tube 4 are fixedly connected with annular racks 84. The left side of the fixed box 7 is fixedly connected with a servo motor 85, and the output shaft of the servo motor 85 is fixedly connected with a reducer 86 and a driving gear 87 from left to right in sequence. The top of the driving gear 87 is connected to the annular rack. The bottom of the frame 84 is meshed, and the interlayer of the kiln tail discharge barrel 5 is fixedly connected with an annular screen frame 88. By setting the rotary screening mechanism 8, the servo motor 85 provides a driving source, and then the sealing rotating sleeve 81, the rotating groove 82, the convex ring 83, the annular rack frame 84, the reducer 86, the driving gear 87 and the annular screen frame 88 cooperate to rotate the kiln tube 4 at a uniform speed, so that the ceramsite proppant calcined for the second time in the kiln tube 4 is fully in contact with the evenly distributed heat, so as to achieve the purpose of uniform calcination and improve the finished product quality of the ceramsite proppant calcined for the second time;A mounting frame 9 is provided below the fixed box 7, and an inner cavity of the mounting frame 9 is provided with an adjusting mechanism 10 used in conjunction with the calcining tube 1 and the kiln tube 4, and the adjusting mechanism 10 includes a T-shaped slide 101, and two groups of T-shaped slides 101 are horizontally opened in the inner cavity of the mounting frame 9, and a stepper motor 102 is fixedly connected to the right side of the mounting frame 9, and a screw rod 103 is fixedly connected to the output shaft of the stepper motor 102, and a threaded tube 104 is threadedly connected to the surface of the screw rod 103, and an adjusting seat 105 is fixedly connected to the outer side of the threaded tube 104, and the adjusting seat 105 is fixedly connected to the outer side of the threaded tube 104. The T-shaped slide block 106 that slides with the T-shaped slide groove 101, and the top of the adjustment seat 105 are hinged with an adjustment frame 107 that is hinged with the calcination tube 1. By setting the adjustment mechanism 10, the stepping motor 102 provides a driving source, and then the T-shaped slide groove 101, the screw rod 103, the threaded tube 104, the adjustment seat 105, the T-shaped slide block 106 and the adjustment frame 107 cooperate to adjust the inclination angle of the calcination tube 1 and the kiln tube 4, so as to meet the rapid calcination and material discharge requirements of the ceramsite proppant that is calcined in the kiln for the second time, and improve the efficiency of the calcination of the ceramsite proppant in the kiln for the second time. ;

[0036] Working principle: the staff first injects the ceramsite proppant for secondary kiln calcination into the kiln tube 4 from the feeding hopper, then the stepper motor 102 is turned on and drives the screw rod 103 to rotate forward, the screw rod 103 drives the threaded tube 104 and the adjustment seat 105 to move forward synchronously, and at the same time the adjustment seat 105 drives the T-shaped slider 106 to slide forward in the T-shaped slide groove 101, as the adjustment seat 105 gradually moves forward, the adjustment seat 105 drives the adjustment frame 107 to tilt upward, and the support frame 13 provides support compensation between the fixed box 7 and the mounting frame 9, then the adjustment frame 107 drives the kiln tube 4 to tilt upward through the calcining tube 1, and at the same time the kiln tube 4 drives the limit rod to slide upward in the limit frame through the fixed box 7, until the calcining tube 1 and the kiln tube 4 tilt upward to the predetermined position;

[0037] Then the staff continuously injects gas into the flamethrower 61 through the gas injection port with the help of an external gas supply device, and then the igniter 62 ignites the gas injected into the flamethrower 61. The flamethrower 61 evenly distributes the burning flame through the flamethrower cover 64 and the flow holes 65 in the calcination tube 1, and generates high temperature in the calcination tube 1. The gas leakage sensor 63 monitors the leakage of the gas in the flamethrower 61 in real time, and then the three sets of electric blowers 66 are turned on to generate strong wind in the three sets of guide tubes 2. , three groups of one-way valves 67 block the wind and heat in the three groups of guide tubes 2, so that the strong wind in the three groups of guide tubes 2 passes through the guide block 11 and evenly enters the calcination tube 1, and then the high temperature generated in the calcination tube 1 is evenly supplied to the kiln tube 4, and the temperature sensor 68 senses the temperature in the kiln tube 4 in real time until the temperature in the kiln tube 4 reaches the temperature requirement for the secondary calcination of the ceramsite proppant, and the large stop valve 3 blocks the heat in the kiln tube 4 in one direction, so that the heat is retained in the kiln tube 4;

[0038] Then the servo motor 85 controls the two sets of driving gears 87 to rotate synchronously. The two sets of driving gears 87 drive the kiln barrel 4 to rotate at a uniform speed through the two sets of annular racks 84. At the same time, the kiln barrel 4 drives the convex ring 83 to rotate in a sealed manner in the rotating groove 82 in the sealing rotating sleeve 81, so that the kiln barrel 4 in a uniform rotating state drives the ceramsite proppant for secondary kiln calcination to rotate at a uniform speed, and fully contact with the evenly distributed heat to achieve the purpose of secondary kiln calcination. Since the kiln barrel 4 is distributed in an inclined state, and with the uniform rotation of the kiln barrel 4, the ceramsite proppant in the kiln barrel 4 rotates at a uniform speed to the position of the kiln tail unloading barrel 5 , and then the annular screen frame 88 screens the impurities in the ceramsite proppant after the secondary kiln calcination. The sieved ceramsite proppant follows the rotation frequency of the kiln tube 4 to rotate out and discharge, and the impurities are accumulated in the interlayer between the kiln tail discharge barrel 5 and the annular screen frame 88. After the ceramsite proppant in the kiln tube 4 has completed the secondary kiln calcination operation and discharged, the servo motor 85 stops, and the reducer 86 controls the two sets of driving gears 87 to slow down and stop the kiln tube 4 through the two sets of annular rack frames 84, and then the cleaning cover is opened, and the impurities in the interlayer between the kiln tail discharge barrel 5 and the annular screen frame 88 are cleaned through the cleaning port.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A secondary kiln calcining device based on ceramsite proppant, comprising a calcining cylinder (1), characterized in that: The calcining tube (1) is connected to a guide tube (2) on all sides, the tail end of the calcining tube (1) is connected to a large stop valve (3), the other end of the large stop valve (3) is connected to a kiln tube (4), a charging hopper is arranged on the left side of the top of the kiln tube (4), the tail end of the kiln tube (4) is connected to a kiln tail discharge tube (5), a cleaning port is provided on the front of the kiln tail discharge tube (5) and a cleaning cover plate is provided on the front of the cleaning port, and the inner cavity of the calcining tube (1) is provided with a calcining mechanism (6) used in conjunction with the kiln tube (4); A fixed box (7) is arranged below the kiln cylinder (4), and a rotating screening mechanism (8) used in conjunction with the kiln cylinder (4) is arranged in the inner cavity of the fixed box (7); A mounting frame (9) is provided below the fixed box (7), and an inner cavity of the mounting frame (9) is provided with an adjusting mechanism (10) used in conjunction with the calcining tube (1) and the kiln tube (4); The calcining mechanism (6) comprises a flamethrower (61), the flamethrower (61) is fixed at the head end of the calcining tube (1), an igniter (62) is embedded in the front of the flamethrower (61), a gas leakage sensor (63) is embedded in the top of the flamethrower (61), the outlet of the flamethrower (61) is connected to a flamethrower hood (64), and the flamethrower hood (64) is provided with flow holes (65) around it for use with the calcining tube (1), the outer end of the inner cavity of the guide tube (2) is fixedly connected to an electric blower fan (66), and the inner end of the guide tube (2) is connected to a one-way valve (67), the other end of the one-way valve (67) is connected to the inner cavity of the kiln tube (4), and a temperature sensor (68) is embedded on the left side of the front of the kiln tube (4).

2. A secondary kiln calcination equipment based on ceramsite proppant according to claim 1, characterized in that: The rotary screening mechanism (8) comprises a sealing rotating sleeve (81), the sealing rotating sleeve (81) is arranged at the inner end of the large stop valve (3) and the kiln barrel (4), and both sides of the inner cavity of the sealing rotating sleeve (81) are annularly provided with rotating grooves (82), the inner cavities of the two groups of rotating grooves (82) are rotatably connected with convex rings (83) fixedly matched with the large stop valve (3) and the kiln barrel (4), the two sides of the kiln barrel (4) are roll-fixedly connected with annular racks (84), the left side of the fixed box (7) is fixedly connected with a servo motor (85), and the output shaft of the servo motor (85) is fixedly connected with a reducer (86) and a driving gear (87) in sequence from left to right, the top of the driving gear (87) is meshed with the bottom of the annular rack (84), and the interlayer of the kiln tail unloading barrel (5) is fixedly connected with an annular screening frame (88).

3. The secondary kiln calcining equipment based on ceramsite proppant according to claim 1 is characterized in that: The adjustment mechanism (10) comprises a T-shaped slide groove (101), two groups of the T-shaped slide grooves (101) are transversely arranged in the inner cavity of the mounting frame (9), a stepper motor (102) is fixedly connected to the right side of the mounting frame (9), and the output shaft of the stepper motor (102) is fixedly connected to a screw rod (103), a threaded cylinder (104) is threadedly connected to the surface of the screw rod (103), and an adjustment seat (105) is fixedly connected to the outer side of the threaded cylinder (104), and the adjustment seat (105) is fixedly connected to T-shaped sliding blocks (106) that are slidably matched with the T-shaped slide grooves (101) on all sides of the adjustment seat (105), and an adjustment frame (107) that is hingedly matched with the calcining cylinder (1) is hingedly connected to the top of the adjustment seat (105).

4. The secondary kiln calcining equipment based on ceramsite proppant according to claim 1 is characterized in that: The top of the flamethrower (61) is connected to a gas injection port, and a sealing cap is provided on the top of the gas injection port.

5. The secondary kiln calcining equipment based on ceramsite proppant according to claim 2 is characterized in that: The sealing rotating sleeve (81) is fixedly connected with a thickened sealing ring near the large stop valve (3) and the kiln tube (4).

6. The secondary kiln calcining equipment based on ceramsite proppant according to claim 1 is characterized in that: The inner cavity of the guide tube (2) is fixedly connected to guide blocks (11) on all sides near the electric blower fan (66), and the inner cavity of the guide block (11) is provided with guide holes.

7. The secondary kiln calcining equipment based on ceramsite proppant according to claim 1 is characterized in that: Annular grooves are provided on both sides of the kiln cylinder (4), and the inner cavity of the annular groove is rotatably connected to a limiting ring (12) fixedly matched with the fixing box (7).

8. The secondary kiln calcining equipment based on ceramsite proppant according to claim 1 is characterized in that: The right side of the bottom of the fixed box (7) is hinged with a support frame (13) fixedly matched with the mounting frame (9), the left side of the fixed box (7) is fixedly connected with limit rods from front to back in sequence, and the front and rear sides of the mounting frame (9) are fixedly connected with limit frames slidably matched with the limit rods.

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