A device for recycling fluorine-containing waste gas from a chemical heating dispersion machine

Abstract

The invention belongs to the technical field of waste gas recovery, and discloses a fluorine-containing waste gas recovery and utilization device for a chemical heating disperser, comprising a glass kettle body, a glass kettle cover is fixedly installed on the top of the glass kettle body, a constant pressure funnel is clamped and installed on one side of the top of the glass kettle cover, a serpentine condenser is clamped and installed on the other side of the top of the glass kettle cover, a thermometer is clamped and installed on the middle part of the top of the glass kettle cover, a mounting seat is fixedly installed on the top of the glass kettle cover, a frequency conversion motor is fixedly installed on the top of the mounting seat, the output shaft of the frequency conversion motor is connected to a stirring rod through a coupling, and the stirring end of the stirring rod is located inside the glass kettle body; a diversion positioning structure is fixedly installed on the top of the inner wall of the glass kettle body, which can make the waste gas enter different positions inside the glass kettle body, prevent the problem of excessive local waste gas content inside the glass kettle body, improve the reaction efficiency of the absorption liquid and the waste gas inside the reactor, and save the time required for the waste gas reaction.

Description

Technical Field

[0001] The invention belongs to the technical field of chemical industry, and in particular relates to a device for recycling fluorine-containing waste gas from a chemical heating disperser. Background Art

[0002] Chemical industry is the abbreviation of "chemical process", "chemical industry" and "chemical engineering". Any technology that uses chemical methods to change the composition and structure of substances or synthesize new substances belongs to chemical production technology, that is, chemical process, and the resulting products are called chemicals or chemical products. At first, the production of such products was done by hand workshops, which later evolved into factories and gradually formed a specific production industry, namely the chemical industry. Waste gas is produced during chemical processing;

[0003] Fluorine is one of the waste gases produced during chemical processing. Fluorine is the most chemically active element among halogens and organisms are easily harmed by it. For humans, since fluorine is mainly inhaled through the respiratory tract and has a strong irritating effect, long-term exposure to fluorine-containing gas or dust can cause industrial fluorosis, and long-term intake of water and food with high fluoride content can cause endemic fluorosis.

[0004] For this purpose, it is necessary to process and reuse the fluorine-containing waste gas. The existing processing and utilization device for the fluorine-containing waste gas is generally a double-layer glass reactor. However, the double-layer glass reactor is not convenient for positioning the stirring shaft, and the fluorine-containing waste gas enters the double-layer glass reactor in one direction, resulting in the problem of excessively high concentration of local fluorine-containing waste gas inside the double-layer glass reactor. Summary of the invention

[0005] The present invention aims at solving the problem that the double-layer glass reactor is not convenient for positioning the stirring shaft, and the fluorine-containing waste gas enters the double-layer glass reactor in one direction, resulting in excessively high concentration of local fluorine-containing waste gas inside the double-layer glass reactor. The present invention proposes the following technical solution:

[0006] A fluorine-containing waste gas recovery and utilization device for a chemical heating and dispersing machine comprises a glass kettle body, a glass kettle cover is fixedly installed on the top of the glass kettle body, a constant pressure funnel is clamped and installed on one side of the top of the glass kettle cover, a serpentine condenser is clamped and installed on the other side of the top of the glass kettle cover, a thermometer is clamped and installed on the middle of the top of the glass kettle cover, a mounting seat is fixedly installed on the top of the glass kettle cover, a variable frequency motor is fixedly installed on the top of the mounting seat, the output shaft of the variable frequency motor is connected to a stirring rod through a coupling, and the stirring end of the stirring rod is located inside the glass kettle body; A diversion positioning structure is fixedly installed on the top of the inner wall of the glass kettle, and the diversion positioning structure includes an internal diversion ring fixedly installed on the inner wall of the glass kettle, a shrinkage airbag is fixedly installed on the middle part of the outer side of the internal diversion ring, a horizontal positioning tube is installed at one end of the shrinkage airbag and the horizontal positioning tube runs through the internal diversion ring, a front and rear displacement rod is slidably connected inside the horizontal positioning tube, a ball is embedded and installed at one end of the front and rear displacement rod, and the outer side of the ball and the outer side of the stirring rod are in contact with each other, a hose is fixedly connected to the bottom end of the internal diversion ring, and a guide head is connected to one end of the hose.

[0007] Preferably, a support structure is installed on the top of the mounting seat, a frequency conversion controller is installed on the top of the support structure, and a low-temperature cooling circulation pump is connected to the outside of the glass kettle through a pipeline.

[0008] Preferably, a return spring is fixedly installed inside the horizontal positioning tube, a disc is installed at one end of the return spring, the disc is slidably connected to the inside of the horizontal positioning tube and fixedly connected to one end of the front and rear displacement rod, and a piston is fixedly installed at one end of the disc.

[0009] Preferably, a limiting sleeve is fixedly installed at one end of the horizontal positioning tube, a limiting strip is integrally formed at the outer side of the front-rear displacement rod at the inner wall position of the limiting sleeve, a limiting piece is fixedly installed at the bottom of the outer surface of the horizontal positioning tube, a steel wire rope is fitted and connected to the outer side of the limiting piece, and both ends of the steel wire rope are respectively fixedly connected to the limiting strip and the guide head.

[0010] Preferably, a hollow column is integrally formed at the bottom of the outer surface of the inner diverter ring, the hose is fixedly installed on the outside of the hollow column, a limit rod is fixedly installed at the bottom end of the inner diverter ring at the position of the outer surface of the hollow column, a round rod is clamped and installed between the two limit rods, a guide strip is sleeved on the outside of the round rod, and one end of the guide strip is fixedly connected to the guide head.

[0011] Preferably, a guide groove is formed at one end of the guide bar, and the round rod is located inside the guide groove.

[0012] Preferably, the support structure comprises a rotating block movably connected to the inside of the mounting seat, a supporting column is fixedly slidably disposed on the top of the rotating block, and a top end of the supporting column is fixedly connected to a bottom end of the frequency conversion controller.

[0013] Preferably, a rotating rod is welded to one end of the rotating block, and the rotating rod is rotatably connected to the inside of the mounting seat, and a rectangular groove is opened inside the mounting seat at a position corresponding to the outer side of the rotating block, and a fixing pin that fits with the inner wall of the rotating block passes through one end surface of the mounting seat, and a plurality of positioning holes are opened on the mounting seat and one end surface of the rotating block in a circular array with the center point of the rotating rod, and the fixing pin is located inside the positioning hole.

[0014] Preferably, a fixing piece is fixedly installed on the outer side of the support column, a screw rod is installed on the bottom end of the fixing piece through a bearing, and the screw rod and the rotating block are connected by threads.

[0015] The beneficial effects of the present invention are:

[0016] (1) It can make the waste gas enter different positions inside the glass reactor, preventing the problem of excessive local waste gas content inside the glass reactor, improving the reaction efficiency of the absorption liquid and waste gas inside the reactor, and saving the time required for the waste gas reaction;

[0017] (2) It can ensure that the stirring rod will not loosen or shift during use, thereby improving the reliability and stability of the equipment. In addition, the three-side extrusion fixation can effectively prevent unnecessary vibration and noise generated by the stirring rod when rotating at high speed, thereby improving the working efficiency and comfort of the equipment;

[0018] (3) Increase the sealing performance of the connection between the glass kettle cover and the glass kettle body. The improvement of sealing performance can effectively prevent the leakage of liquid or gas. Secondly, good sealing performance can also ensure the safety and stability of the experiment or production process under specific temperature and pressure conditions;

[0019] (4) It is convenient for personnel to operate the frequency conversion controller, which improves the safety of the frequency conversion controller operation, prevents personnel from being disturbed by the frequency conversion motor during operation, and makes it convenient for personnel of different heights to operate it. It also reduces the area occupied by the support column during transportation, thereby facilitating the transportation and handling of the support column. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The structure diagram of a fluorine-containing waste gas recovery and utilization device of a chemical heating dispersion machine is shown;

[0021] Figure 2 What is shown is the internal structure diagram of the glass kettle;

[0022] Figure 3 What is shown is a structural schematic diagram of the flow diversion positioning structure;

[0023] Figure 4 Shown is a schematic diagram of the installation structure of the return spring;

[0024] Figure 5 It shows Figure 3 Schematic diagram of the structure of the middle A area;

[0025] Figure 6 What is shown is a schematic diagram of the structure of the support structure;

[0026] Figure 7 Shown is a schematic diagram of the installation structure of the stirring rod.

[0027] In the figure: 1. glass kettle body; 2. glass kettle cover; 3. constant pressure funnel; 4. serpentine condenser; 5. thermometer; 6. mounting base; 7. variable frequency motor; 8. supporting structure; 81. rectangular groove; 82. rotating rod; 83. rotating block; 84. supporting column; 85. fixing piece; 86. screw rod; 87. fixing pin; 9. variable frequency controller; 10. stirring rod; 11. split flow positioning structure; 1101. internal split flow ring; 1102. contraction Airbag; 1103, horizontal positioning tube; 1104, return spring; 1105, disc; 1106, piston; 1107, front and rear displacement rod; 1108, ball; 1109, limit sleeve; 1110, limit strip; 1111, limit piece; 1112, wire rope; 1113, guide head; 1114, hose; 1115, limit rod; 1116, guide strip; 1117, round rod; 12, low-temperature cooling circulation pump. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0029] Embodiment 1: The present invention provides a device for recycling fluorine-containing waste gas from a chemical heating dispersion machine, such as Figure 1-7 As shown: it comprises: a glass kettle body 1, a glass kettle cover 2 is fixedly installed on the top of the glass kettle body 1, a constant pressure funnel 3 is clamped and installed on one side of the top of the glass kettle cover 2, a serpentine condenser 4 is clamped and installed on the other side of the top of the glass kettle cover 2, a thermometer 5 is clamped and installed on the middle part of the top of the glass kettle cover 2, a mounting seat 6 is fixedly installed on the top of the glass kettle cover 2, a variable frequency motor 7 is fixedly installed on the top of the mounting seat 6, the output shaft of the variable frequency motor 7 is connected to a stirring rod 10 through a coupling, and the stirring end of the stirring rod 10 is located inside the glass kettle body 1, and three protrusions are welded at equal distances on the top of the outer surface of the stirring rod 10;

[0030] A diversion positioning structure 11 is fixedly installed on the top of the inner wall of the glass kettle 1, and the diversion positioning structure 11 includes an internal diversion ring 1101 fixedly installed on the inner wall of the glass kettle 1, the top of the internal diversion ring 1101 is connected to the exhaust gas discharge pipe through a pipeline, a shrinkage airbag 1102 is fixedly installed in the middle of the outer side of the internal diversion ring 1101, a horizontal positioning tube 1103 is installed at one end of the shrinkage airbag 1102, and the horizontal positioning tube 1103 passes through the internal diversion ring 1101, and a front and rear displacement rod 1107 is slidably connected inside the horizontal positioning tube 1103, a ball 1108 is embedded and installed at one end of the front and rear displacement rod 1107, and the outer side of the ball 1108 and the outer side of the stirring rod 10 are in contact with each other, and a hose 1114 is fixedly connected to the bottom end of the internal diversion ring 1101, and a guide head 1113 is connected to one end of the hose 1114.

[0031] like Figure 1 As shown, a support structure 8 is installed on the top of the mounting base 6, and a frequency conversion controller 9 is installed on the top of the support structure 8. The frequency conversion controller 9 is used to control the operation of the frequency conversion motor 7 and the speed of the frequency conversion motor 7. The outside of the glass kettle body 1 is connected to a low-temperature cooling circulation pump 12 through a pipeline, which is used to keep the temperature inside the glass kettle body 1 at a constant value to prevent the problem of temperature differences in the glass kettle body 1.

[0032] like Figure 3 and Figure 4 As shown, a return spring 1104 is fixedly installed inside the horizontal positioning tube 1103, and a disc 1105 is installed at one end of the return spring 1104. The disc 1105 is slidably connected to the inside of the horizontal positioning tube 1103 and fixedly connected to one end of the front-rear displacement rod 1107. A piston 1106 is fixedly installed at one end of the disc 1105. The return spring 1104 is used to drive the front-rear displacement rod 1107 to reset, thereby changing the difficulty of resetting the front-rear displacement rod 1107. Moreover, since the front-rear displacement rod 1107 drives the piston 1106 to move when it moves, the piston 1106 squeezes the inside of the horizontal positioning tube 1103 when it moves, so that the gas inside the horizontal positioning tube 1103 moves, and the moving gas causes the shrink airbag 1102 to expand. The expanded shrink airbag 1102 increases the sealing of the connection between the glass kettle body 1 and the glass kettle cover 2 to prevent the problem of gas leakage.

[0033] like Figure 3 , Figure 4 and Figure 5As shown, a limiting sleeve 1109 is fixedly installed at one end of the horizontal positioning tube 1103, a limiting strip 1110 is integrally formed at the inner wall position of the limiting sleeve 1109 on the outer side of the front and rear displacement rods 1107, a limiting member 1111 is fixedly installed at the bottom of the outer surface of the horizontal positioning tube 1103, and a steel wire rope 1112 is fitted and connected to the outer side of the limiting member 1111, and both ends of the steel wire rope 1112 are respectively fixedly connected to the limiting strip 1110 and the guide head 1113, which can be used to adjust the angle of the guide head 1113, thereby adjusting the blowing direction of multiple guide heads 1113, so that the gas can evenly enter different positions inside the glass kettle 1 to prevent the problem of excessive local exhaust gas content.

[0034] like Figure 3 and Figure 5 As shown, a hollow column is integrally formed at the bottom of the outer surface of the internal diverter ring 1101, and a hose 1114 is fixedly installed on the outside of the hollow column. A limiting rod 1115 is fixedly installed at the bottom end of the internal diverter ring 1101 at the position of the outer surface of the hollow column, and a round rod 1117 is clamped and installed between the two limiting rods 1115. A guide strip 1116 is sleeved on the outside of the round rod 1117, and one end of the guide strip 1116 is fixedly connected to the guide head 1113, which can be used to position the guide head 1113 so that the guide head 1113 can only swing but cannot rotate, so that the gases sprayed by multiple guide heads 1113 are at different positions. A guide groove is provided at one end of the guide strip 1116, and the round rod 1117 is located inside the guide groove, which is used to limit the guide strip 1116, thereby changing the difficulty of limiting the guide strip 1116.

[0035] The support structure 8 includes a rotating block 83 movably connected to the inside of the mounting seat 6 , a supporting column 84 is fixedly slidably disposed on the top of the rotating block 83 , and a top of the supporting column 84 is fixedly connected to the bottom of the frequency conversion controller 9 .

[0036] like Figure 1 and Figure 5As shown, a rotating rod 82 is welded at one end of the rotating block 83, and the rotating rod 82 is rotatably connected to the inside of the mounting seat 6. A rectangular groove 81 is provided inside the mounting seat 6 at a position corresponding to the outer side of the rotating block 83. A fixing pin 87 that fits the inner wall of the rotating block 83 penetrates through one end surface of the mounting seat 6. A plurality of positioning holes are provided in a circular array on one end surface of the mounting seat 6 and the rotating block 83 with the center point of the rotating rod 82. The fixing pin 87 is located inside the positioning hole, which can facilitate the flipping of the rotating block 83, change the flipping difficulty of the rotating block 83, and can be used for rotating The rotating block 83 is fixed at the back, so that when the rotating block 83 rotates, it can drive the frequency conversion controller 9 and the frequency conversion motor 7 to interlace, thereby achieving the purpose of facilitating the control of the frequency conversion controller 9. A fixing part 85 is fixedly installed on the outside of the support column 84, and a screw rod 86 is installed on the bottom end of the fixing part 85 through a bearing. The screw rod 86 and the rotating block 83 are connected by threads, which can facilitate the adjustment of the height of the frequency conversion controller 9, thereby facilitating the control of the frequency conversion controller 9 by people of different heights.

[0037] Working principle: During the actual use of the device, the personnel rotate the rotating block 83, and the rotating block 83 drives the support column 84 to rotate. When the support column 84 rotates, it drives the frequency conversion controller 9 to deflect, so that the frequency conversion controller 9 and the frequency conversion motor 7 are staggered, and the rotating block 83 after rotation is fixed by the fixing pin 87. Then the personnel rotate the screw rod 86, and when the screw rod 86 rotates, it drives the fixing member 85 to move. When the fixing member 85 moves, it drives the support column 84 to rise and fall inside the rotating block 83, and at this time drives the height of the frequency conversion controller 9 to be adjusted, so that it is convenient for personnel to operate the frequency conversion controller 9, improves the safety of the frequency conversion controller 9 during operation, prevents personnel from being interfered by the frequency conversion motor 7 during operation, and can be convenient for personnel of different heights to operate it, and reduces the area occupied by the support column 84 during transportation, so as to facilitate the transportation and handling of the support column 84.

[0038] Then, the glass kettle cover 2 is installed between the glass kettle body 1, and the constant pressure funnel 3, the serpentine condenser 4 and the thermometer 5 are all installed with the glass kettle cover 2. At this time, the exhaust gas enters the inner diverter ring 1101 along the pipeline, and the gas inside the inner diverter ring 1101 is diverted inside the inner diverter ring 1101, and enters the guide head 1113 along the hose 1114 at the bottom of the multiple inner diverter rings 1101, and enters different positions inside the glass kettle body 1 along the guide head 1113, so that the exhaust gas enters different positions inside the glass kettle body 1, preventing the problem of excessive local exhaust gas content inside the glass kettle body 1, improving the reaction efficiency of the absorption liquid and the exhaust gas inside the reactor, and saving the time required for the exhaust gas reaction;

[0039] At this time, since the frequency conversion controller 9 controls the operation of the frequency conversion motor 7, the frequency conversion motor 7 drives the stirring rod 10 to rotate when it is running, and the stirring rod 10 drives the liquid inside the glass kettle body 1 to flow when it rotates, and the low-temperature cooling circulation pump 12 keeps the internal temperature of the glass kettle body 1 constant during operation to prevent the internal temperature of the glass kettle body 1 from floating. At this time, the gas pressure inside the contraction airbag 1102 drives the piston 1106 to move, and the piston 1106 drives the disc 1105 to move when it moves. When the disc 1105 moves, it drives the return spring 1104 to compress, and at the same time, the disc 1105 drives the horizontal positioning tube 1103 to move, and when the horizontal positioning tube 1103 moves, it drives the ball 1108 and the outer side of the stirring rod 10 to be squeezed, so that the stirring rod 10 is fixed by three-side extrusion, which can ensure that the stirring rod 10 will not be loose or shifted during use, thereby improving the reliability and stability of the equipment. In addition, the three-side extrusion fixation can also effectively prevent the stirring rod 10 from generating unnecessary vibration and noise when it rotates at high speed, thereby improving the working efficiency and comfort of the equipment.

[0040] At the same time, as the protrusion of the stirring rod 10 fits with the ball 1108, the inner diameter of the stirring rod 10 becomes larger, causing the ball 1108 to drive the front and rear displacement rod 1107 to move, and when moving, it drives the disk 1105 and the piston 1106 to move, and drives the return spring 1104 to stretch. At the same time, when the piston 1106 moves, it squeezes the gas inside the horizontal positioning tube 1103, and the gas inside the horizontal positioning tube 1103 enters the shrink airbag 1102 to expand the shrink airbag 1102. After the shrink airbag 1102 expands, it enters the inner side of the connection between the glass kettle cover 2 and the glass kettle body 1, thereby increasing the sealing performance of the connection between the glass kettle cover 2 and the glass kettle body 1. The improvement of the sealing performance can effectively prevent the leakage of liquid or gas. Secondly, good sealing performance can also ensure the safety and stability of the experiment or production process under specific temperature and pressure conditions.

[0041] And because the front and rear displacement rods 1107 move, they simultaneously drive the limit bar 1110 to move inside the limit sleeve 1109, and at this time drive the wire rope 1112 to move inside the limit piece 1111. When the wire rope 1112 moves, the guide head 1113 swings. When the guide head 1113 swings, it swings up and down between the round rod 1117 and the limit rod 1115 through the guide bar 1116, so that the exhaust gas sprayed by the guide head 1113 is evenly in the glass kettle 1, preventing the problem of excessive local exhaust gas content in the glass kettle 1. Finally, the exhaust gas is mixed with the absorption liquid stirred in the glass kettle 1, so that the exhaust gas reacts, and the residue after the reaction can be recovered.

[0042] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. A chemical heating disperser fluorine-containing waste gas recovery and utilization device, characterized in that: The invention comprises a glass kettle body (1), wherein a glass kettle cover (2) is fixedly mounted on the top of the glass kettle body (1), a constant pressure funnel (3) is clamped and mounted on one side of the top of the glass kettle cover (2), a serpentine condenser (4) is clamped and mounted on the other side of the top of the glass kettle cover (2), a thermometer (5) is clamped and mounted on the middle part of the top of the glass kettle cover (2), a mounting seat (6) is fixedly mounted on the top of the glass kettle cover (2), a variable frequency motor (7) is fixedly mounted on the top of the mounting seat (6), an output shaft of the variable frequency motor (7) is connected to a stirring rod (10) via a coupling, and the stirring end of the stirring rod (10) is located inside the glass kettle body (1); a flow splitting positioning structure (11) is fixedly mounted on the top of the inner wall of the glass kettle body (1), and the flow splitting positioning structure (11) comprises An internal flow dividing ring (1101) is fixedly mounted on the inner wall of the glass kettle (1), a shrinkage airbag (1102) is fixedly mounted on the middle part of the outer side of the internal flow dividing ring (1101), a horizontal positioning tube (1103) is mounted on one end of the shrinkage airbag (1102), and the horizontal positioning tube (1103) passes through the internal flow dividing ring (1101), a front-rear displacement rod (1107) is slidably connected inside the horizontal positioning tube (1103), a ball (1108) is embedded and mounted on one end of the front-rear displacement rod (1107), and the outer side of the ball (1108) and the outer side of the stirring rod (10) are in contact with each other, a hose (1114) is fixedly connected to the bottom end of the internal flow dividing ring (1101), and one end of the hose (1114) is connected to a flow guide head (1113); A return spring (1104) is fixedly installed inside the horizontal positioning tube (1103), a disc (1105) is installed at one end of the return spring (1104), the disc (1105) is slidably connected to the inside of the horizontal positioning tube (1103) and is fixedly connected to one end of the front-rear displacement rod (1107), and a piston (1106) is fixedly installed at one end of the disc (1105); A limiting sleeve (1109) is fixedly installed at one end of the horizontal positioning tube (1103); a limiting strip (1110) is integrally formed on the outer side of the front-rear displacement rod (1107) at the inner wall position of the limiting sleeve (1109); a limiting member (1111) is fixedly installed at the bottom of the outer surface of the horizontal positioning tube (1103); a steel wire rope (1112) is fitted and connected to the outer side of the limiting member (1111); and two ends of the steel wire rope (1112) are respectively fixedly connected to the limiting strip (1110) and the guide head (1113); A hollow column is integrally formed at the bottom of the outer surface of the internal shunt ring (1101); the hose (1114) is fixedly mounted on the outside of the hollow column; a limit rod (1115) is fixedly mounted at the bottom end of the internal shunt ring (1101) at a position on the outer surface of the hollow column; a round rod (1117) is clamped and mounted between the two limit rods (1115); a guide strip (1116) is sleeved on the outside of the round rod (1117); and one end of the guide strip (1116) is fixedly connected to the guide head (1113).

2. The fluorine-containing waste gas recovery and utilization device of a chemical heating dispersion machine according to claim 1, characterized in that: A support structure (8) is installed on the top of the mounting seat (6), a frequency conversion controller (9) is installed on the top of the support structure (8), and a low-temperature cooling circulation pump (12) is connected to the outside of the glass kettle (1) via a pipeline.

3. The fluorine-containing waste gas recovery and utilization device of a chemical heating dispersion machine according to claim 1, characterized in that: A guide groove is formed at one end of the guide strip (1116), and the round rod (1117) is located inside the guide groove.

4. The fluorine-containing waste gas recovery and utilization device of a chemical heating dispersion machine according to claim 2, characterized in that: The support structure (8) comprises a rotating block (83) movably connected to the inside of the mounting seat (6), a supporting column (84) being fixedly slidably disposed at the top end of the rotating block (83), and a top end of the supporting column (84) being fixedly connected to a bottom end of the frequency conversion controller (9).

5. The fluorine-containing waste gas recovery and utilization device of a chemical heating dispersion machine according to claim 4, characterized in that: A rotating rod (82) is welded to one end of the rotating block (83), and the rotating rod (82) is rotatably connected to the inside of the mounting seat (6). A rectangular groove (81) is provided inside the mounting seat (6) at a position corresponding to the outside of the rotating block (83). A fixing pin (87) that fits with the inner wall of the rotating block (83) passes through one end surface of the mounting seat (6). A plurality of positioning holes are provided on one end surface of the mounting seat (6) and the rotating block (83) in a circular array with the center point of the rotating rod (82), and the fixing pin (87) is located inside the positioning hole.

6. The fluorine-containing waste gas recovery and utilization device of a chemical heating dispersion machine according to claim 4, characterized in that: A fixing member (85) is fixedly mounted on the outer side of the support column (84), a screw rod (86) is mounted on the bottom end of the fixing member (85) via a bearing, and the screw rod (86) and the rotating block (83) are connected via threads.

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