Efficient synergistic removal and discharge system for nitrogen oxides and dioxin

Abstract

The invention relates to the technical field of flue gas purification, in particular to a nitrogen oxide and dioxin efficient synergistic removal and discharge system which comprises a pretreatment frame and an advanced treatment frame, the pretreatment frame is arranged at the upper end of the advanced treatment frame, and a removal mechanism, a transition air cylinder and an activated carbon storage cylinder are sequentially arranged in the pretreatment frame; local parts of the bottoms of the transition air cylinder and the activated carbon storage cylinder extend into the advanced treatment frame, and a reaction cylinder II is arranged in the advanced treatment frame and corresponds to the activated carbon storage cylinder up and down; the efficient synergistic removal of nitrogen oxides and dioxin is realized through the synergistic treatment of a two-stage layered structure, dynamic mixing deacidification and dynamic adsorption optimization, and meanwhile, the adaptability of equipment to complex working conditions is improved through an adjustable transmission assembly.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of flue gas purification, in particular to a high-efficiency synergistic removal system for nitrogen oxides and dioxins. BACKGROUND

[0002] With the increasingly stringent environmental standards, the synergistic removal of nitrogen oxides (NO x ) and dioxins (PCDD / Fs) in industrial flue gas has become a key requirement for air pollution control. As a strong carcinogenic persistent organic pollutant (POPs), dioxins are closely related to acid gases (such as HCl and SO2) in flue gas - an acidic environment will promote the thermal conversion of chlorine-containing precursors (such as PCBs and HCl) and the catalytic synthesis of dioxins by heavy metals (such as Cu and Fe). NO x is not only the main cause of acid rain, but also exacerbates the generation of dioxin precursors during combustion at high temperatures. Therefore, to achieve high-efficiency synergistic removal of NO x and dioxins, problems such as acid gas control, activated carbon adsorption efficiency, and cross-inhibition of pollutants need to be addressed.

[0003] Currently, the removal of NO x and dioxins in industrial flue gas mainly uses a step-by-step process of "acid removal + activated carbon adsorption", but there are still some defects in the specific operation process: first, the traditional acid removal equipment has the problem of uneven mixing of slurry and flue gas, resulting in short contact time between flue gas and slurry, low removal efficiency, and residual acid gases continuously promoting the generation of dioxins; second, in the activated carbon adsorption process, powdered activated carbon is sprayed into the flue gas to adsorb dioxins and part of NO x , but the contact efficiency of activated carbon with flue gas depends on the uniformity of spraying due to gravity settling, and activated carbon is easily wrapped by fly ash and becomes ineffective; in addition, PAC needs to be disposed together with fly ash after saturation, resulting in high consumption of activated carbon and high disposal cost. SUMMARY

[0004] The purpose of the present application is to achieve high-efficiency synergistic removal of nitrogen oxides and dioxins through a two-stage layered structure, dynamic mixing acid removal, and dynamic adsorption optimization, and to improve the adaptability of the equipment to complex working conditions through an adjustable transmission assembly, to solve the technical defects mentioned in the background art.

[0005] The objective of this invention can be achieved through the following technical solution: a highly efficient synergistic removal and emission system for nitrogen oxides and dioxins, comprising a pretreatment frame and an advanced treatment frame, wherein the pretreatment frame is disposed at the upper end of the advanced treatment frame, and a removal mechanism, a transition gas cylinder and an activated carbon storage cylinder are sequentially disposed inside the pretreatment frame, wherein the bottom of the transition gas cylinder and the activated carbon storage cylinder partially extend into the interior of the advanced treatment frame, and a reaction cylinder II is disposed inside the advanced treatment frame at a position corresponding to the activated carbon storage cylinder above and below. The removal mechanism includes a reaction cylinder, which is installed inside two sets of frames at the bottom inner wall of the pretreatment frame. A gas supply pipe is installed horizontally through one side of the reaction cylinder, with one end of the gas supply pipe extending to the inner wall of the other side of the reaction cylinder and the other end inserted into the transition gas cylinder. The inner wall of the reaction cylinder is provided with sleeves at the upper and lower ends of the gas supply pipe. Each of the two sets of sleeves has a long gas guide pipe running through it. One end of each of the two sets of long gas guide pipes has a mesh structure and overlaps with the sleeve. The other end of both extends to the outside of the reaction cylinder and is provided with a gas storage cylinder. A damping spring shock absorber is provided between the reaction cylinder and the gas storage cylinder.

[0006] Furthermore, the end of the gas storage cylinder away from the long air guide pipe is rotatably connected to the inner wall of the pretreatment frame, and a limiting auxiliary rotating gear ring is fixedly sleeved on the outer wall of the gas storage cylinder and the end close to the long air guide pipe. The bottom of the auxiliary rotating gear ring is meshed with a main gear, and a motor is provided between one side of the main gear and the inner wall of the pretreatment frame.

[0007] Furthermore, the gas supply pipe extends into the tank inside the reaction cylinder one with a mesh structure. Two sets of discs are fixed on the outer wall of the gas supply pipe outside the reaction cylinder one, and a U-shaped clamping frame is sleeved between the two sets of discs on the outer wall of the gas supply pipe. A spiral rotating rod is horizontally spirally inserted through the top of the U-shaped clamping frame, and a motor two is installed between one end of the spiral rotating rod and the inner wall of one side of the pretreatment frame.

[0008] Furthermore, a suitable filter plate is embedded inside the transition air cylinder at the upper end of the air supply pipe, and a suction pump is installed at the top of the transition air cylinder.

[0009] Furthermore, a rectangular inner groove is provided at the center of both the front and rear ends of the advanced processing frame. A horizontal groove is provided at the center of the opposing inner walls of the two sets of rectangular inner grooves, and a vertical groove is provided at one end of the top of the horizontal groove. A dynamic adjustment mechanism is provided inside the rectangular inner groove at the front end.

[0010] Furthermore, a sliding rod is fixedly installed at the center of both the front and rear ends of the reaction cylinder two, and the ends of the sliding rods slide inside the corresponding transverse grooves. The end of the sliding rod located at the front end of the reaction cylinder two extends to the outside of the transverse groove and is connected by a vertical rod, and the bottom of the vertical rod is set in a conical structure.

[0011] Furthermore, the dynamic adjustment mechanism includes a cylinder disposed on the inner wall of one side of the front rectangular inner groove, and a sliding frame is fixedly installed at the cylinder output end by a push rod. The vertical length of the sliding frame is half the vertical length of the rectangular inner groove, and the sliding frame is sleeved on the outside of the sliding rod and adjacent to the vertical rod.

[0012] Furthermore, the dynamic adjustment mechanism also includes a motor three located on the inner wall of the front rectangular inner groove, and a turntable is fixedly installed at the output shaft of the front end of the motor three. The turntable is located at the bottom of the horizontal groove and corresponds vertically to the vertical groove, and half of the conical tooth blocks are provided on the outside of the turntable.

[0013] Compared with the prior art, the beneficial effects of the present invention are: This invention utilizes a pretreatment frame and a removal mechanism. Motor 1 drives a main gear that meshes with an auxiliary rotating gear ring outside the gas storage cylinder, causing the gas storage cylinder to rotate. Simultaneously, Motor 2 drives a spiral rod to push a U-shaped clamping frame, forcing the gas delivery pipe into the interior of the reaction cylinder, displacing the reaction cylinder and achieving relative movement between the sleeve and the long gas guide pipe. The original mixed gas inside the gas storage cylinder is released into the reaction cylinder through the mesh structure of the long gas guide pipe, fully contacting the rotating quicklime slurry, enhancing the acid-base neutralization reaction, and removing acidic gases from the flue gas through the quicklime slurry. This eliminates the promoting effect of the acidic environment on dioxin formation, creating favorable conditions for subsequent activated carbon adsorption. This invention also incorporates an advanced processing frame and a dynamic adjustment mechanism. A cylinder drives a sliding frame to move along a transverse groove, pulling a sliding rod to make the second reaction cylinder slide horizontally and precisely dock with the transition gas cylinder to receive purified gas. A third motor drives a turntable to rotate, with half of its external conical toothed blocks cooperating with the conical structure at the bottom of the vertical rod to drive the vertical rod to undulate up and down, and to pull the second reaction cylinder to shake up and down as a whole. This prevents activated carbon deposition, accelerates the contact reaction between the gas and the activated carbon, and a filter plate is installed at the top of the transition gas cylinder to intercept activated carbon particles or reaction impurities carried by the gas, allowing them to flow back to the second reaction cylinder to continue adsorption, reducing activated carbon loss and improving utilization. This system adopts a hierarchical architecture of pretreatment and advanced treatment to achieve a synergistic treatment effect of deacidification pretreatment and activated carbon adsorption. Attached Figure Description

[0014] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional view combining the preprocessing box and the advanced processing box of the present invention; Figure 3 This is a top sectional view of the preprocessing frame of the present invention; Figure 4This is a partial three-dimensional schematic diagram of the removal mechanism of the present invention; Figure 5 This is a partial cross-sectional view of the removal mechanism of the present invention; Figure 6 This is a three-dimensional schematic diagram of the combination of the advanced processing frame and the dynamic adjustment mechanism of the present invention; Figure 7 This is a top-sectional view of the advanced processing frame of the present invention.

[0016] In the diagram: 1. Pretreatment frame; 2. Advanced treatment frame; 3. Removal mechanism; 31. Reaction cylinder one; 32. Gas supply pipe; 33. Sleeve; 34. Long gas guide pipe; 35. Gas storage cylinder; 351. Damping spring shock absorber ring; 36. Auxiliary rotating gear ring; 37. Main gear; 38. Motor one; 39. Disc; 310. U-shaped clamping frame; 311. Spiral rotating rod; 312. Motor two; 4. Transition gas cylinder; 5. Activated carbon storage cylinder; 6. Reaction cylinder two; 61. Slide rod; 62. Vertical rod; 7. Dynamic adjustment mechanism; 71. Cylinder; 72. Slide frame; 73. Motor three; 74. Turntable; 75. Conical toothed block. Detailed Implementation

[0017] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Example 1: Please refer to Figure 1 - Figure 5 As shown, a highly efficient synergistic removal and emission system for nitrogen oxides and dioxins includes a pretreatment frame 1 and an advanced treatment frame 2. The pretreatment frame 1 is located at the upper end of the advanced treatment frame 2. Inside the pretreatment frame 1, a removal mechanism 3, a transition gas cylinder 4, and an activated carbon storage cylinder 5 are arranged in sequence. The bottom of the transition gas cylinder 4 and the activated carbon storage cylinder 5 both extend into the interior of the advanced treatment frame 2. Inside the advanced treatment frame 2, a reaction cylinder 6 is arranged at a position corresponding to the activated carbon storage cylinder 5 above and below. The removal mechanism 3 includes a reaction cylinder 31, which is installed inside the two sets of frames at the bottom inner wall of the pretreatment frame 1. A gas supply pipe 32 is installed horizontally through one side of the reaction cylinder 31. One end of the gas supply pipe 32 extends to the inner wall of the other side of the reaction cylinder 31, and the other end is inserted into the transition gas cylinder 4. A sleeve 33 is provided on the inner wall of the reaction cylinder 31 and at the upper and lower ends of the gas supply pipe 32. A gas guide pipe 34 is provided through the two sets of sleeves 33. One end of the two sets of gas guide pipes 34 has a mesh structure and overlaps with the sleeve 33. The other end of both extends to the outside of the reaction cylinder 31 and is provided with a gas storage cylinder 35. A damping spring shock absorber ring 351 is provided between the reaction cylinder 31 and the gas storage cylinder 35. The end of the gas storage cylinder 35 away from the long air guide pipe 34 is rotatably connected to the inner wall of the pretreatment frame 1, and the outer wall of the gas storage cylinder 35 and the end close to the long air guide pipe 34 are fixedly sleeved with a limiting auxiliary rotating gear ring 36. The bottom of the auxiliary rotating gear ring 36 is meshed with a main gear 37, and a motor 38 is provided between one side of the main gear 37 and the inner wall of the pretreatment frame 1. The gas supply pipe 32 extends into the tank body inside the reaction cylinder 31 with a mesh structure. Two sets of discs 39 are fixed on the outer wall of the gas supply pipe 32 located outside the reaction cylinder 31. A U-shaped frame 310 is sleeved between the two sets of discs 39 on the outer wall of the gas supply pipe 32. A spiral rod 311 is horizontally spirally installed at the top of the U-shaped frame 310. A motor 312 is installed between one end of the spiral rod 311 and the inner wall of one side of the pretreatment frame 1. Before operation, an appropriate amount of quicklime slurry is added to the reaction cylinder 31. Then, the motor 312 is started to drive the spiral rod 311 to rotate. The spiral action pulls the U-shaped clamp 310 to move towards the reaction cylinder 31. The U-shaped clamp 310 pushes the gas delivery pipe 32 into the reaction cylinder 31 with the help of the disc 39. The end of the gas delivery pipe 32 presses tightly against the inner wall of the reaction cylinder 31, forcing it to move. During this process, the sleeve 33 and the gas guide pipe 34 move relative to each other. The mesh end of the gas guide pipe 34 is inserted into the reaction cylinder 31, thereby releasing the original mixed gas in the gas storage cylinder 35 into the reaction cylinder 31 through the mesh structure. At the same time, the starting motor 38 drives the main gear 37 to rotate. The main gear 37 meshes with the auxiliary rotating gear ring 36, realizing the rotation of the gas storage cylinder 35, and driving the gas guide pipe 34 to move synchronously, thereby pulling the reaction cylinder 31 to rotate together, so as to ensure that the quicklime slurry inside the reaction cylinder 31 is fully mixed with the gas. The gas that has undergone preliminary deacidification and purification is extracted by the suction pump set at the bottom of the gas delivery pipe 32, and after being filtered by the mesh surface of the gas delivery pipe 32, it is introduced into the gas delivery pipe 32, and then sucked into the transition gas cylinder 4 for further removal treatment, thereby significantly improving the removal efficiency of nitrogen oxides.

[0019] Example 2: Please refer to Figure 2 , Figure 6 and Figure 7As shown, slide rods 61 are fixedly installed at the center of both the front and rear ends of the reaction cylinder 6, and the ends of slide rods 61 slide in the corresponding transverse grooves. The end of slide rod 61 at the front end of the reaction cylinder 6 extends to the outside of the transverse groove and is connected by a vertical rod 62, and the bottom of the vertical rod 62 is set in a conical structure. The advanced processing frame 2 has rectangular inner grooves at the center of both the front and rear ends. The center of the opposing inner walls of the two sets of rectangular inner grooves is provided with horizontal grooves, and a vertical groove is provided at one end of the top of the horizontal groove. A dynamic adjustment mechanism 7 is provided inside the rectangular inner groove at the front end. The dynamic adjustment mechanism 7 includes a cylinder 71 provided on the inner wall of one side of the rectangular inner groove at the front end. A sliding frame 72 is fixedly installed at the output end of the cylinder 71 through a push rod. The vertical length of the sliding frame 72 is half the vertical length of the rectangular inner groove. The sliding frame 72 is sleeved on the outside of the sliding rod 61 and is adjacent to the vertical rod 62. The dynamic adjustment mechanism 7 also includes a motor 73 located on the inner wall of the front rectangular inner groove, and a turntable 74 is fixedly installed at the output shaft of the front end of the motor 73. The turntable 74 is located at the bottom of the horizontal groove and corresponds to the vertical groove. Half of the conical tooth blocks 75 are provided on the outside of the turntable 74.

[0020] After the deacidification treatment, the gas is introduced into the advanced treatment frame 2 through the transition gas cylinder 4. At this time, the top opening of the reaction cylinder 6 is aligned with the activated carbon storage cylinder 5, and an appropriate amount of activated carbon is added into the reaction cylinder 6. Then, the cylinder 71 is started to drive the push rod and the sliding frame 72 to move. The sliding frame 72 pulls the sliding rod 61 and the reaction cylinder 6 to move back and forth along the inside of the horizontal groove until the sliding rod 61 moves to the vertical position of the vertical groove. At this time, the top of the reaction cylinder 6 is aligned with the transition gas cylinder 4. The transition gas cylinder 4 introduces the preliminarily purified gas into the reaction cylinder 6 to realize the combination reaction of gas and activated carbon. At the same time, the vertical rod 62 moves with the sliding rod 61 to the top surface of the turntable 74, and then the motor 73 is started to drive the turntable 74 to rotate. The rotation of the turntable 74 drives the conical tooth block 75 on its outside to rotate. The vertical rod 62 moves up and down along the surface of the conical tooth block 75, which in turn pulls the sliding rod 61 and the reaction cylinder 6 to move up and down back and forth. With the up and down shaking of the reaction cylinder 6, the reaction rate between activated carbon and gas is accelerated, effectively avoiding the impact of activated carbon deposition on the gas purification effect, and further improving the adsorption effect of activated carbon on nitrogen oxides. Inside the transition gas cylinder 4, at the upper end of the gas supply pipe 32, there is an embedded filter plate. A suction pump is installed at the top of the transition gas cylinder 4. The gas, after being treated by activated carbon adsorption, continues to flow upward. The activated carbon particles or impurity particles generated by the reaction carried by the gas are effectively blocked by the filter plate and return to the reaction cylinder 6. Subsequently, with the help of the suction pump, these particles are introduced into the subsequent dioxin treatment device for more in-depth treatment, ultimately achieving efficient and synergistic removal and emission of nitrogen oxides and dioxins.

[0021] Working principle: When this invention is in use, the exhaust gas containing nitrogen oxides and dioxins is first pre-treated by the removal mechanism 3 in the pretreatment frame 1. The exhaust gas first enters the reaction cylinder 31. The motor 38 drives the main gear 37 to mesh with the auxiliary rotating gear ring 36 outside the gas storage cylinder 35, thereby driving the gas storage cylinder 35 to rotate. Simultaneously, motor 2 312 drives the spiral rod 311 to push the U-shaped clamp frame 310, forcing the gas delivery pipe 32 to be inserted into the reaction cylinder 1 31, squeezing the reaction cylinder 1 31 to move, realizing the relative movement between the sleeve 33 and the gas guide pipe 34. The original mixed gas in the gas storage cylinder 35 is released to the reaction cylinder 1 31 through the mesh structure of the gas guide pipe 34, and fully contacts the rotating quicklime slurry, strengthening the acid-base neutralization reaction. The deacidified gas is extracted by the suction pump at the bottom of the gas delivery pipe 32, and enters the transition gas cylinder 4 after being filtered through the mesh surface, avoiding the slurry particles from being carried into the subsequent process, thus achieving preliminary deacidification and purification. In the transition gas cylinder 4, the gas continues to flow and is ready to enter the reaction cylinder 6 in the advanced treatment box 2. Then, an appropriate amount of activated carbon is added. The cylinder 71 of the dynamic adjustment mechanism 7 drives the sliding frame 72 to move along the horizontal groove, and the traction rod 61 makes the reaction cylinder 6 slide horizontally and precisely dock with the transition gas cylinder 4 to receive the purified gas. Motor 3 73 drives turntable 74 to rotate. The half-conical toothed blocks 75 on its outside cooperate with the conical structure at the bottom of vertical rod 62, driving vertical rod 62 to move up and down, pulling reaction cylinder 2 6 to shake up and down as a whole, avoiding activated carbon deposition, accelerating the contact reaction between gas and activated carbon. A filter plate is set at the top of transition gas cylinder 4 to intercept activated carbon particles or reaction impurities carried by the gas, so that they flow back to reaction cylinder 2 6 to continue to participate in adsorption, reducing activated carbon loss and improving utilization rate, further enhancing the adsorption effect of nitrogen oxides.

[0022] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A highly efficient synergistic removal system for nitrogen oxides and dioxins, comprising a pretreatment box (1) and an advanced treatment box (2), wherein the pretreatment box (1) is disposed above the advanced treatment box (2), characterized in that: The pretreatment frame (1) is provided with a removal mechanism (3), a transition gas cylinder (4) and an activated carbon storage cylinder (5) in sequence. The bottom of the transition gas cylinder (4) and the activated carbon storage cylinder (5) are partially extended into the advanced treatment frame (2). The advanced treatment frame (2) is provided with a reaction cylinder (6) at the position corresponding to the upper and lower parts of the activated carbon storage cylinder (5). The removal mechanism (3) includes a reaction cylinder (31), which is installed inside the two sets of frames at the bottom inner wall of the pretreatment frame (1). A gas supply pipe (32) is installed horizontally through one side of the reaction cylinder (31). One end of the gas supply pipe (32) extends to the inner wall of the other side of the reaction cylinder (31), and the other end is inserted into the transition gas cylinder (4). The inner wall of the reaction cylinder (31) and the upper and lower ends of the gas supply pipe (32) are respectively provided with sleeves (33). The two sets of sleeves (33) are respectively provided with gas guide pipes (34). One end of the two sets of gas guide pipes (34) has a mesh structure and overlaps with the sleeves (33). The other end of both extends to the outside of the reaction cylinder (31) and is provided with a gas storage cylinder (35). A damping spring shock absorber (351) is provided between the reaction cylinder (31) and the gas storage cylinder (35).

2. The efficient synergistic removal system for nitrogen oxides and dioxins according to claim 1, characterized in that, The end of the gas storage cylinder (35) away from the long air guide pipe (34) is rotatably connected to the inner wall of the pretreatment frame (1), and the outer wall of the gas storage cylinder (35) and the end close to the long air guide pipe (34) are fixedly sleeved with a limiting auxiliary rotating gear ring (36). The bottom of the auxiliary rotating gear ring (36) is meshed with a main gear (37), and a motor (38) is provided between one side of the main gear (37) and the inner wall of the pretreatment frame (1).

3. The efficient synergistic removal system for nitrogen oxides and dioxins according to claim 1, characterized in that, The gas supply pipe (32) extends into the tank body inside the reaction cylinder (31) with a mesh structure. Two sets of discs (39) are fixed on the outer wall of the gas supply pipe (32) located outside the reaction cylinder (31). A U-shaped frame (310) is sleeved between the two sets of discs (39) on the outer wall of the gas supply pipe (32). A spiral rod (311) is horizontally spirally inserted through the top of the U-shaped frame (310). A motor (312) is installed between one end of the spiral rod (311) and the inner wall of one side of the pretreatment frame (1).

4. The efficient synergistic removal and emission control system for nitrogen oxides and dioxins according to claim 1, characterized in that, The transition air cylinder (4) is equipped with a suitable filter plate at the upper end of the air supply pipe (32), and a suction pump is installed on the top of the transition air cylinder (4).

5. The efficient synergistic removal system for nitrogen oxides and dioxins according to claim 1, characterized in that, The advanced processing frame (2) has rectangular inner grooves at the center of both the front and rear ends. Horizontal grooves are set at the center of the opposing inner walls of the two sets of rectangular inner grooves, and a vertical groove is set at one end of the top of the horizontal groove. A dynamic adjustment mechanism (7) is set inside the rectangular inner groove at the front end.

6. The efficient synergistic removal system for nitrogen oxides and dioxins according to claim 1, characterized in that, Both the front and rear ends of the reaction cylinder (6) are fixedly installed with sliding rods (61), and the ends of the sliding rods (61) slide in the corresponding transverse grooves. The end of the sliding rod (61) at the front end of the reaction cylinder (6) extends to the outside of the transverse groove and is connected by a vertical rod (62), and the bottom of the vertical rod (62) is set in a conical structure.

7. The efficient synergistic removal system for nitrogen oxides and dioxins according to claim 5, characterized in that, The dynamic adjustment mechanism (7) includes a cylinder (71) disposed on the inner wall of one side of the front rectangular inner groove, and a slide frame (72) is fixedly installed at the output end of the cylinder (71) by a push rod. The vertical length of the slide frame (72) is half the vertical length of the rectangular inner groove, and the slide frame (72) is sleeved on the outside of the slide rod (61) and adjacent to the vertical rod (62).

8. The efficient synergistic removal system for nitrogen oxides and dioxins according to claim 5, characterized in that, The dynamic adjustment mechanism (7) also includes a motor three (73) set on the inner wall of the front rectangular inner groove, and a turntable (74) is fixedly installed at the output shaft of the front end of the motor three (73). The turntable (74) is set at the bottom of the horizontal groove and corresponds to the vertical groove. Half of the conical tooth blocks (75) are set on the outside of the turntable (74).

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