A double-coiled tube reactor for chemical reactions

Abstract

The present invention relates to the technical field of chemical reactors, and discloses a double-coiled tube reactor for chemical reactions, which includes a reactor body and a cylinder connected to the outside of the reactor body. A first cavity, a second cavity, and a third cavity that are sequentially connected are provided inside the cylinder. A first piston is slidably arranged in the first cavity. A housing is installed on the outside of the cylinder. A first rack and a second rack are slidably arranged inside the housing. The first rack and the second rack jointly engage with a first gear. A driving assembly is arranged between the first rack and the reactor body. The second rack is connected to the first piston. The gas in the reactor body pushes the first piston up into the second cavity, so that the gas gradually discharges through the small gap between the first piston and the inner wall of the second cavity. When the air pressure continues to increase, the first piston moves up into the third cavity, so that the gas quickly discharges through the large gap between the first piston and the inner wall of the third cavity, thereby improving the pressure relief efficiency of the reactor body.

Description

Technical Field

[0001] The present invention relates to the technical field of chemical reactors, and specifically to a double-coil reactor for chemical reactions. Background Technique

[0002] A double-coil reactor is a special chemical reactor. The double-coil reactor mainly consists of a sealed reaction chamber and multiple layers of spiral coils. These coils are arranged in a double-layer form, increasing the heat dissipation area of the reactor and helping to improve the heat transfer efficiency of the reactor.

[0003] Inside the double-coil reactor, there is a sealed reaction chamber for containing reactants and catalysts. The side of the reactor is provided with inlets and outlets for the input of reactants and the output of products. The double-coil reactor is usually also equipped with a temperature control system for precisely controlling the reaction temperature. Due to its efficient and compact design, the double-coil reactor is widely used in multiple fields, including but not limited to: chemical industry: for the preparation of fine chemicals, coatings, synthetic materials, etc.; petroleum: for catalytic cracking, liquid-phase hydrogenation reactions, etc.; medicine: for reaction processes such as drug synthesis; environmental protection: also applied in environmental protection fields such as wastewater treatment.

[0004] In a double-coil reactor, the way the double tubes play a role in dissipating heat and lowering the temperature is mainly based on the principle of heat conduction. The double-coil reactor usually consists of two independent coils. These two coils can be respectively filled with a cooling medium. When the chemical reaction in the reactor is at an ultra-high temperature, in order to maintain the reaction within an appropriate temperature range, the cooling medium flows in the two independent coils. Through the heat conduction of the coil wall, after the cooling medium absorbs the heat generated by the reaction in the coil, it is discharged through the outlet of the coil and the heat is dissipated into the environment. This is usually achieved through radiators, cooling towers or other heat exchange devices.

[0005] Currently, when the existing double-coil reactor is in reaction, some reactants with intense chemical reactions will rapidly generate a large amount of gas, quickly increasing the pressure inside the reactor and easily causing dangers such as explosion. However, the aperture of the pressure relief valve is difficult to adjust according to the change of the pressure inside the reactor, thus easily affecting the pressure relief efficiency of the reactor. Therefore, it does not meet the existing requirements. For this reason, we propose a double-coil reactor for chemical reactions. Summary of the Invention

[0006] The present invention provides a double-coil reactor for chemical reactions, which has the beneficial effect of improving the pressure relief efficiency of the reactor, and solves the problem mentioned in the above background technique that when the existing double-coil reactor is in reaction, some reactants with intense chemical reactions will rapidly generate a large amount of gas, quickly increasing the pressure inside the reactor and easily causing dangers such as explosion. However, the aperture of the pressure relief valve is difficult to adjust according to the change of the pressure inside the reactor, thus easily affecting the pressure relief efficiency of the reactor.

[0007] The present invention provides the following technical solution: A double-coiled tube reactor for chemical reactions, comprising a reactor body, a first coiled tube and a second coiled tube provided on the side wall of the reactor body, and a cylinder connected to the outside of the reactor body. A first cavity, a second cavity and a third cavity are sequentially communicated inside the cylinder. A first piston is slidably arranged in the first cavity. A first spring is arranged between the first piston and the inner wall of the cylinder. A housing is installed on the outside of the cylinder. A first rack and a second rack are slidably arranged inside the housing. The first rack and the second rack jointly engage with a first gear. A driving assembly is arranged between the first rack and the reactor body. The second rack is connected to the first piston.

[0008] As an alternative embodiment of the double-coiled tube reactor for chemical reactions according to the present invention, wherein: A feed pipe is provided on the upper side of the reactor body for adding reactants into the reactor body. A discharge pipe is provided on the lower side of the reactor body for discharging the products in the reactor body.

[0009] As an alternative embodiment of the double-coiled tube reactor for chemical reactions according to the present invention, wherein: The first coiled tube is wound around the upper part of the side wall of the reactor body. The lower end of the first coiled tube is set as a first water inlet pipe, and the upper end of the first coiled tube is set as a first water outlet pipe. The second coiled tube is wound around the lower part of the side wall of the reactor body. The lower end of the second coiled tube is set as a second water inlet pipe, and the upper end of the second coiled tube is set as a second water outlet pipe.

[0010] As an alternative embodiment of the double-coiled tube reactor for chemical reactions according to the present invention, wherein: A limiting piece is installed on the inner wall of the cylinder. The limiting piece is arranged below the first piston, and the distance between the limiting pieces is smaller than the diameter of the first piston. A limiting rod is inserted in the middle of the first piston. A first retainer is slidably sleeved on the lower end of the limiting rod. The first retainer includes a first ring slidably sleeved on the lower end of the limiting rod, a second ring concentric with the first ring, and a first fixing rod connecting between the first ring and the inner wall of the cylinder. The inner diameter of the second ring is larger than the outer diameter of the first ring. The middle of the first fixing rod is inserted into the side of the second ring. One end of the first fixing rod is connected to the outside of the first ring, and the other end of the first fixing rod is connected to the inner wall of the cylinder. The first spring is arranged between the first piston and the second ring and is sleeved on the outside of the limiting rod. The upper end of the first spring is connected to the bottom of the first piston, and the lower end of the first spring is connected to the upper side of the second ring.

[0011] As an alternative embodiment of the double coiled tube reactor for chemical reactions according to the present invention, wherein: a second retainer is slidably sleeved on the upper end of the limiting rod, and the second retainer includes a third ring slidably sleeved on the upper end of the limiting rod and a second fixing rod connected between the third ring and the inner wall of the cylinder.

[0012] As an alternative embodiment of the double coiled tube reactor for chemical reactions according to the present invention, wherein: the driving assembly includes an airbag arranged inside the housing, an air pipe connected between the airbag and the reactor body, and a second piston slidably arranged inside the air pipe. The upper end of the airbag is connected to the inner wall of the housing, the lower end of the airbag is connected to the second rack, the first gear is rotatably arranged inside the housing, and the first rack and the second rack are respectively engaged with both sides of the first gear. The upper end of the second rack is slidably inserted into the upper side of the housing, and a connecting rod is connected between the upper end of the second rack and the limiting rod.

[0013] As an alternative embodiment of the double coiled tube reactor for chemical reactions according to the present invention, wherein: a toothed ring is rotatably arranged inside the cylinder, and a sealing block is rotatably arranged inside the toothed ring. The number of the sealing blocks is set to be several, and several sealing blocks are all engaged with the inner ring of the toothed ring, and several sealing blocks are circumferentially and evenly arranged inside the toothed ring.

[0014] As an alternative embodiment of the double coiled tube reactor for chemical reactions according to the present invention, wherein: the sealing blocks are all rotatably arranged on the inner wall of the cylinder, and the ends of the sealing blocks are all located in the first cavity. Several sealing blocks together form a cylinder, and the inner diameter of this cylinder is smaller than the diameter of the first cavity. The first piston is slidably arranged inside the cylinder formed by the sealing blocks together. The diameter of the second cavity is the same as the diameter of the first cavity, and the diameter of the third cavity is larger than the diameter of the second cavity.

[0015] As an alternative embodiment of the double coiled tube reactor for chemical reactions according to the present invention, wherein: a second gear is also rotatably arranged inside the cylinder, and the second gear is engaged with the outer ring of the toothed ring. A torsion spring is coaxially arranged on the side of the second gear, and both ends of the torsion spring are respectively connected to the second gear and the inner wall of the cylinder. A third rack engaged with the second gear is also slidably arranged inside the cylinder. A connecting rod is installed on the outer side of the third rack, and the vertical cross-section of the connecting rod is in an "L" shape. The upper end of the connecting rod is slidably inserted into the inner wall of the cylinder, and an inclined block is installed at the upper end of the connecting rod. The inclined block is located in the third cavity, and the inclined block intermittently abuts against the first piston.

[0016] As an alternative embodiment of the double-coiled tube reactor for chemical reactions according to the present invention, wherein: a positioning pin is slidably inserted into the inner wall of the cylinder body, a positioning groove for cooperating with the positioning pin is formed on the upper side of one of the sealing blocks, the positioning pin is inserted into the positioning groove, a second spring is sleeved outside the positioning pin, and two ends of the second spring are respectively connected to the positioning pin and the inside of the cylinder body. The vertical cross-section of the positioning pin is L-shaped, the upper end of the positioning pin is located in the third cavity, and the upper end of the positioning pin intermittently abuts against the first piston.

[0017] The present invention has the following beneficial effects:

[0018] 1. In the double-coiled tube reactor for chemical reactions, the air pressure inside the reactor body rapidly increases, causing the gas to push the first piston upward into the second cavity. A small gap is generated between the first piston and the inner wall of the second cavity, allowing the gas inside the reactor body to gradually escape through this small gap. When the air pressure continues to increase, the gas inside the reactor body continues to push the first piston upward. At the same time, the gas inside the reactor body also pushes the second piston upward, pressing the air in the air pipe into the airbag, causing the lower end of the airbag to drive the first rack downward. Through the meshing of the first gear with the first rack and the second rack, the second rack generates an upward pulling force on the first piston through the limiting rod, thereby moving the first piston upward into the third cavity. A large gap is generated between the first piston and the inner wall of the third cavity, allowing the gas inside the reactor body to quickly escape through this large gap, thus improving the pressure relief efficiency of the reactor body.

[0019] 2. In the double-coiled tube reactor for chemical reactions, during the process of the first piston moving upward into the third cavity, it first drives the positioning pin out of the positioning groove. Subsequently, the first piston abuts against the inclined block, causing the inclined block to drive the third rack to move leftward through the connecting rod. Through the meshing of the third rack with the second gear, the second gear is driven to rotate, and the torsion spring is compressed. Then, through the meshing of the second gear with the toothed ring, the toothed ring is driven to rotate. Finally, through the meshing of the toothed ring with the sealing block, the sealing block is rotated, causing the end of the sealing block to move into the inner wall of the cylinder body, eliminating the blockage of the sealing block to the air flow, increasing the diameter of the discharged air flow in the first cavity, and further improving the pressure relief efficiency. Description of the Drawings

[0020] Figure 1 is a three-dimensional structural schematic diagram of the present invention.

[0021] Figure 2 is a bottom structural schematic diagram of the present invention.

[0022] Figure 3 is an exploded view of a partial structure of the present invention.

[0023] Figure 4Schematic diagram of the first state structure inside the cylinder body of the present invention.

[0024] Figure 5 Schematic diagram of the second state structure inside the cylinder body of the present invention.

[0025] Figure 6 Schematic diagram of the third state structure inside the cylinder body of the present invention.

[0026] Figure 7 Of the present invention Figure 6 Schematic diagram of the enlarged structure at position A.

[0027] Figure 8 Schematic diagram of the structure where the sealing blocks of the present invention are closed to each other.

[0028] Figure 9 Schematic diagram of the structure where the sealing blocks of the present invention are unfolded from each other.

[0029] Figure 10 Schematic diagram of the three-dimensional structure of the inclined block of the present invention.

[0030] Figure 11 Schematic diagram of the sectional structure of the inclined block of the present invention.

[0031] In the figure: 100, reactor body; 101, feed pipe; 102, discharge pipe; 110, first coil; 111, first water inlet pipe; 112, first water outlet pipe; 120, second coil; 121, second water inlet pipe; 122, second water outlet pipe; 130, cylinder body; 140, first cavity; 150, second cavity; 160, third cavity; 170, first piston; 180, first spring; 181, limit piece; 182, limit rod; 183, first retainer; 1831, first ring; 1832, second ring; 1833, first fixing rod; 184, second retainer; 1841, third ring; 1842, second fixing rod; 190, housing; 200, first rack; 210, second rack; 220, first gear; 230, drive assembly; 231, airbag; 232, air pipe; 233, second piston; 234, connecting rod; 240, toothed ring; 241, sealing block; 242, second gear; 243, torsion spring; 250, third rack; 251, connecting rod; 252, inclined block; 260, positioning pin; 261, positioning groove; 262, second spring. Detailed implementation mode

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0033] Embodiment 1. The purpose of this embodiment is to facilitate the solution of the problem that in the existing double-coil reactor during the reaction, some reactants with intense chemical reactions will rapidly generate a large amount of gas, quickly increasing the pressure inside the reactor and easily causing dangers such as explosion. However, the aperture of the pressure relief valve is difficult to adjust according to the change of the pressure inside the reactor, thus easily affecting the pressure relief efficiency of the reactor. Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 , a double-coil reactor for chemical reactions, including a reactor body 100, a first coil 110 and a second coil 120 arranged on the side wall of the reactor body 100, and a cylinder 130 fixedly connected to the outside of the reactor body 100. See Figure 1 and Figure 2 . A feed pipe 101 is arranged at the top of the reactor body 100, and the feed pipe 101 is used to add reactants into the reactor body 100. A discharge pipe 102 is arranged at the bottom of the reactor body 100, and the discharge pipe 102 is used to discharge the products in the reactor body 100. The first coil 110 is wound around the upper part of the side wall of the reactor body 100. The lower end of the first coil 110 is set as a first water inlet pipe 111, and the upper end of the first coil 110 is set as a first water outlet pipe 112. The second coil 120 is wound around the lower part of the side wall of the reactor body 100. The lower end of the second coil 120 is set as a second water inlet pipe 121, and the upper end of the second coil 120 is set as a second water outlet pipe 122, which is convenient for introducing coolant into the first coil 110 and the second coil 120 to quickly cool down the reactor body 100.

[0034] See Figure 1 and Figure 4 . A first cavity 140, a second cavity 150 and a third cavity 160 are sequentially formed and communicated inside the cylinder 130. The lower end of the first cavity 140 is communicated with the inside of the reactor body 100, and the upper end of the third cavity 160 is communicated with the external environment. A first piston 170 is slidably arranged in the first cavity 140, and the first piston 170, the first cavity 140 and the inside of the reactor body are kept sealed.

[0035] See Figure 3 and Figure 4, a first spring 180 is arranged between the inner wall of the first piston 170 and the cylinder body 130. Two limiting pieces 181 are fixedly installed on the inner wall of the cylinder body 130. The limiting pieces 181 are arranged below the first piston 170, and the distance between the limiting pieces 181 is smaller than the diameter of the first piston 170 to prevent the first piston 170 from passing over the limiting pieces 181. A limiting rod 182 is press-fitted in the middle of the first piston 170. A first retainer 183 is slidably sleeved on the lower end of the limiting rod 182. The first retainer 183 includes a first ring 1831 slidably sleeved on the lower end of the limiting rod 182, a second ring 1832 concentric with the first ring 1831, and a first fixing rod 1833 fixedly connected between the first ring 1831 and the inner wall of the cylinder body 130. The inner diameter of the second ring 1832 is larger than the outer diameter of the first ring 1831. The middle of the first fixing rod 1833 is fixedly inserted into the side of the second ring 1832, and one end of the first fixing rod 1833 is fixedly connected to the outside of the first ring 1831.

[0036] The other end of the first fixing rod 1833 is fixedly connected to the inner wall of the cylinder body 130. The first spring 180 is arranged between the first piston 170 and the second ring 1832, and the first spring 180 is sleeved on the outside of the limiting rod 182. The upper end of the first spring 180 is fixedly connected to the bottom of the first piston 170, and the lower end of the first spring 180 is fixedly connected to the upper side of the second ring 1832. A second retainer 184 is slidably sleeved on the upper end of the limiting rod 182. The second retainer 184 includes a third ring 1841 slidably sleeved on the upper end of the limiting rod 182 and a second fixing rod 1842 fixedly connected between the third ring 1841 and the inner wall of the cylinder body 130. Through the cooperative use of the limiting rod 182 with the first retainer 183 and the second retainer 184, the first piston 170 moves vertically up and down.

[0037] See Figure 4 、 Figure 5 and Figure 6 , a housing 190 is fixedly installed on the outside of the cylinder body 130. A first rack 200 and a second rack 210 are slidably arranged inside the housing 190. The first rack 200 and the second rack 210 jointly mesh with a first gear 220. A driving assembly 230 is arranged between the first rack 200 and the reactor body 100. The second rack 210 is indirectly connected to the first piston 170.

[0038] The driving component 230 includes an airbag 231 disposed inside the housing 190, an air pipe 232 connected between the airbag 231 and the reactor body 100, and a second piston 233 slidably disposed inside the air pipe 232. Air is filled between the airbag 231, the air pipe 232 and the upper side of the second piston 233, and the air pressure on the upper side of the second piston 233 is greater than the air pressure required for normal reaction inside the reactor body 100. The inner diameter of the middle part of the air pipe 232 is larger than that of both ends. The second piston 233 is slidably disposed in the middle part of the air pipe 232. The upper end of the airbag 231 is fixedly connected to the inner wall of the housing 190, and the lower end of the airbag 231 is fixedly connected to the second rack 210. The first gear 220 is rotatably disposed inside the housing 190 through a bearing, and the first rack 200 and the second rack 210 are respectively engaged with both sides of the first gear 220. The upper end of the second rack 210 is slidably inserted into the upper side of the housing 190, and a connecting rod 234 is fixedly connected between the upper end of the second rack 210 and the limiting rod 182.

[0039] In this embodiment: When a violent reaction occurs inside the reactor body 100 to generate a large amount of gas, the air pressure inside the reactor body 100 increases rapidly, causing the gas to push the first piston 170 upward, and the first spring 180 is stretched. When the first piston 170 moves upward into the second cavity 150, a small gap is generated between the first piston 170 and the inner wall of the second cavity 150, allowing the gas inside the reactor body 100 to gradually escape through this small gap.

[0040] When the air pressure continues to increase, the gas inside the reactor body 100 continues to push the first piston 170 upward. At the same time, the air pressure inside the reactor body 100 is greater than the air pressure on the upper side of the second piston 233, thereby pushing the second piston 233 upward and pressing the air inside the air pipe 232 into the airbag 231, causing the lower end of the airbag 231 to drive the first rack 200 to move downward. Through the engagement of the first gear 220 with the first rack 200 and the second rack 210, the second rack 210 generates an upward pulling force on the first piston 170 through the limiting rod 182, thereby moving the first piston 170 upward into the third cavity 160. A large gap is generated between the first piston 170 and the inner wall of the third cavity 160, allowing the gas inside the reactor body 100 to quickly escape through this large gap, thereby improving the pressure relief efficiency of the reactor body 100. After the pressure relief is completed, the first piston 170 moves downward and resets through the resilience of the first spring 180, as much as possible to solve the problem that in the existing double-coiled tube reactor during the reaction, some reactants with violent chemical reactions will quickly generate a large amount of gas, rapidly increasing the pressure inside the reactor, which is prone to dangers such as explosion. However, the aperture of the pressure relief valve is difficult to adjust according to the change of the pressure inside the reactor, thus easily affecting the pressure relief efficiency of the reactor.

[0041] Embodiment 2 aims to further facilitate the solution to the problem that the gas flow diameter in the first cavity 140 of the reactor body 100 is limited, which is likely to affect the pressure relief efficiency. This embodiment is an improvement based on Embodiment 1. Specifically, please refer to Figure 1 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 and Figure 11 . A toothed ring 240 is rotatably arranged inside the cylinder body 130. A sealing block 241 is rotatably arranged inside the toothed ring 240. The number of the sealing blocks 241 is set to be several. All the several sealing blocks 241 are meshed with the inner ring of the toothed ring 240, and the several sealing blocks 241 are circumferentially and uniformly arranged inside the toothed ring 240. The sealing blocks 241 are all rotatably arranged on the inner wall of the cylinder body 130. The ends of the sealing blocks 241 are all located inside the first cavity 140. The ends of the several sealing blocks 241 together form a cylinder. The inner diameter of this cylinder is smaller than the diameter of the first cavity 140. The first piston 170 is slidably arranged inside the cylinder formed by the sealing blocks 241. The sealing between the sealing blocks 241 is carried out by conventional technical means. The diameter of the second cavity 150 is the same as the diameter of the first cavity 140. The diameter of the third cavity 160 is larger than the diameter of the second cavity 150.

[0042] See Figure 10 and Figure 11 . A second gear 242 is also rotatably arranged inside the cylinder body 130. The second gear 242 is meshed with the outer ring of the toothed ring 240. A torsion spring 243 is coaxially arranged on the side of the second gear 242. The two ends of the torsion spring 243 are respectively fixedly connected with the second gear 242 and the inner wall of the cylinder body 130. A third rack 250 meshed with the second gear 242 is also slidably arranged inside the cylinder body 130. A connecting rod 251 is fixedly installed on the outer side of the third rack 250. The vertical cross-section of the connecting rod 251 is set to be "L" shaped. The upper end of the connecting rod 251 is slidably inserted into the inner wall of the cylinder body 130. The sealing at the insertion part of the connecting rod 251 and the inner wall of the cylinder body 130 is carried out by conventional technical means. An inclined block 252 is fixedly installed at the upper end of the connecting rod 251. The inclined block 252 is located inside the third cavity 160, and the inclined block 252 intermittently abuts against the first piston 170.

[0043] See Figure 6 and Figure 7, a positioning pin 260 is slidably inserted into the inner wall of the cylinder body 130, and the insertion part is sealed by conventional technical means. A positioning groove 261 for cooperating with the positioning pin 260 is formed in the upper side of one of the sealing blocks 241. The positioning pin 260 is inserted into the positioning groove 261, and the notch of the positioning groove 261 is funnel-shaped, so as to facilitate the insertion of the positioning pin 260 into the positioning groove 261. A second spring 262 is sleeved outside the positioning pin 260, and both ends of the second spring 262 are fixedly connected to the positioning pin 260 and the inside of the cylinder body 130 respectively. The vertical cross-section of the positioning pin 260 is L-shaped. The upper end of the positioning pin 260 is located in the third cavity 160, and the upper end of the positioning pin 260 intermittently abuts against the top of the first piston 170.

[0044] In this embodiment: During the process of the first piston 170 moving upward to the third cavity 160, it first drives the positioning pin 260 to be pulled out of the positioning groove 261. Subsequently, the first piston 170 abuts against the inclined block 252, causing the inclined block 252 to drive the third rack 250 to move leftward through the connecting rod 251. Through the meshing of the third rack 250 and the second gear 242, the second gear 242 is driven to rotate, and the torsion spring 243 is compressed. Then, through the meshing of the second gear 242 and the tooth ring 240, the tooth ring 240 is driven to rotate. Finally, through the meshing of the tooth ring 240 and the sealing block 241, the sealing block 241 is rotated, so that the end of the sealing block 241 is transferred into the inner wall of the cylinder body 130, eliminating the blockage of the sealing block 241 to the air flow, increasing the diameter of the discharged air flow in the first cavity 140, and further improving the pressure relief efficiency.

[0045] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or sequence between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0046] The above is only the preferred embodiment of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A double coil reactor for chemical reaction, comprising a reactor body, a first coil and a second coil arranged on the side wall of the reactor body, and a cylinder connected to the outside of the reactor body, characterized in that: A first cavity, a second cavity and a third cavity which are connected in sequence are provided inside the cylinder, a first piston is slidably arranged in the first cavity, a first spring is arranged between the first piston and the inner wall of the cylinder, a shell is installed outside the cylinder, a first rack and a second rack are slidably arranged inside the shell, the first rack and the second rack are meshed with a first gear, a driving assembly is arranged between the first rack and the reactor body, and the second rack is connected to the first piston; A gear ring is rotatably arranged inside the cylinder, and a sealing block is rotatably arranged inside the gear ring. The number of sealing blocks is set to be several, and the several sealing blocks are all meshed with the inner ring of the gear ring, and the several sealing blocks are evenly arranged inside the gear ring in an annular direction. The sealing blocks are all rotatably arranged on the inner wall of the cylinder, and the ends of the sealing blocks are all located in the first cavity. The several sealing blocks together form a cylinder, and the inner diameter of the cylinder is smaller than the diameter of the first cavity. The first piston is slidably arranged on the inner side of the cylinder formed by the sealing blocks. The diameter of the second cavity is the same as the diameter of the first cavity. The diameter of the third cavity is larger than that of the second cavity. A second gear is rotatably arranged on the inside of the cylinder. The second gear is meshed with the outer ring of the gear ring. A torsion spring is coaxially arranged on the side of the second gear. The two ends of the torsion spring are respectively connected to the second gear and the inner wall of the cylinder. A third rack meshed with the second gear is slidably arranged on the inside of the cylinder. A connecting rod is installed on the outer side of the third rack. The vertical section of the connecting rod is arranged in an "L" shape. The upper end of the connecting rod is slidably inserted on the inner wall of the cylinder. An inclined block is installed on the upper end of the connecting rod. The inclined block is located in the third cavity, and the inclined block intermittently conflicts with the first piston.

2. A double coil reactor for chemical reaction according to claim 1, characterized in that: A feed pipe is arranged on the upper side of the reactor body, and the feed pipe is used to add reactants into the reactor body. A discharge pipe is arranged on the lower side of the reactor body, and the discharge pipe is used to discharge the products in the reactor body.

3. A double coil reactor for chemical reaction according to claim 1, characterized in that: The first coil is coiled around the upper part of the side wall of the reactor body, the lower end of the first coil is set as a first water inlet pipe, and the upper end of the first coil is set as a first water outlet pipe. The second coil is coiled around the lower part of the side wall of the reactor body, the lower end of the second coil is set as a second water inlet pipe, and the upper end of the second coil is set as a second water outlet pipe.

4. A double coil reactor for chemical reaction according to claim 1, characterized in that: A limiting plate is installed on the inner wall of the cylinder, and the limiting plate is arranged below the first piston, and the distance between the limiting plates is smaller than the diameter of the first piston. A limiting rod is inserted in the middle of the first piston, and a first retainer is slidably sleeved on the lower end of the limiting rod. The first retainer includes a first ring slidably sleeved on the lower end of the limiting rod, a second ring concentrically arranged with the first ring, and a first fixing rod connected between the first ring and the inner wall of the cylinder, the inner diameter of the second ring is larger than the outer diameter of the first ring, the middle part of the first fixing rod is inserted in the side part of the second ring, one end of the first fixing rod is connected to the outer side of the first ring, and the other end of the first fixing rod is connected to the inner wall of the cylinder, the first spring is arranged between the first piston and the second ring, and the first spring is sleeved on the outer side of the limiting rod, the upper end of the first spring is connected to the bottom of the first piston, and the lower end of the first spring is connected to the upper side of the second ring.

5. A double coil reactor for chemical reaction according to claim 4, characterized in that: The upper end of the limiting rod is slidably sleeved with a second retainer, and the second retainer comprises a third ring slidably sleeved on the upper end of the limiting rod and a second fixing rod connected between the third ring and the inner wall of the cylinder.

6. A double coil reactor for chemical reaction according to claim 4, characterized in that: The driving assembly includes an airbag arranged on the inner side of the shell, an air pipe connected between the airbag and the reactor body, and a second piston slidably arranged on the inner side of the air pipe. The upper end of the airbag is connected to the inner wall of the shell, and the lower end of the airbag is connected to the second rack. The first gear is rotatably arranged on the inner side of the shell, and the first rack and the second rack are respectively engaged with the two sides of the first gear. The upper end of the second rack is slidably inserted on the upper side of the shell, and a connecting rod is connected between the upper end of the second rack and the limiting rod.

7. A double coil reactor for chemical reaction according to claim 1, characterized in that: A positioning pin is slidably inserted into the inner wall of the cylinder, and a positioning groove used in conjunction with the positioning pin is opened on the upper side of one of the sealing blocks. The positioning pin is inserted in the positioning groove, and a second spring is sleeved on the outer side of the positioning pin. The two ends of the second spring are respectively connected to the positioning pin and the inside of the cylinder. The vertical section of the positioning pin is L-shaped, and the upper end of the positioning pin is located in the third cavity, and the upper end of the positioning pin intermittently conflicts with the first piston.

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