Double-coil reactor for chemical reaction

Abstract

The invention relates to the technical field of chemical reactors, and discloses a double-coil reactor for chemical reaction, the double-coil reactor comprises a reactor body and a cylinder connected to the outer side of the reactor body, the inner side of the cylinder is provided with a first cavity, a second cavity and a third cavity which are communicated in sequence, a first piston is slidably arranged in the first cavity, and a second piston is slidably arranged in the third cavity; a shell is mounted on the outer side of the barrel, a first rack and a second rack are slidably arranged on the inner side of the shell and jointly engaged with a first gear, a driving assembly is arranged between the first rack and the reactor body, and the second rack is connected with the first piston. When the gas pressure is increased, gas in the reactor body pushes the first piston upwards into the second cavity, so that the gas is gradually discharged through a small gap between the first piston and the inner wall of the second cavity, and when the gas pressure continues to increase, the first piston moves upwards into the third cavity, so that the gas is rapidly discharged through a large gap between the first piston and the inner wall of the third cavity; therefore, the pressure relief efficiency of the reactor body is improved.

Description

Technical Field

[0001] The invention relates to the technical field of chemical reactors, in particular to a double-coil reactor for chemical reactions. Background Art

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

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

[0004] In a double-coil reactor, the way in which the double tubes dissipate heat and cool down is mainly based on the principle of heat conduction. A double-coil reactor is usually composed of two independent coils, which can be respectively fed with cooling media. When the chemical reaction in the reactor is at an ultra-high temperature, in order to maintain the reaction within a suitable temperature range, the cooling medium flows in two independent coils. Through the heat conduction of the coil wall, the cooling medium absorbs the heat generated by the reaction in the coil, and then is discharged through the outlet of the coil, and the heat is dissipated into the environment. This is usually achieved through a radiator, cooling tower or other heat exchange equipment.

[0005] At present, when the existing double-coil reactor is reacting, some reactants with violent chemical reactions will quickly generate a large amount of gas, quickly increase the pressure in the reactor, and easily cause dangers such as explosion. However, the aperture of the pressure relief valve is difficult to adjust according to the change of pressure in the reactor, which can easily affect the pressure relief efficiency of the reactor; therefore, it does not meet the existing needs. In this regard, 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 technology that when the existing double-coil reactor is reacting, some reactants with violent chemical reactions will quickly generate a large amount of gas, quickly increase the pressure in the reactor, and easily cause dangers such as explosion, but the aperture of the pressure relief valve is difficult to adjust according to the change of the pressure in the reactor, which easily affects the pressure relief efficiency of the reactor.

[0007] The present invention provides the following technical solution: a double-coil reactor for chemical reactions, 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, the inside of the cylinder is provided with a first cavity, a second cavity and a third cavity which are connected in sequence, 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 on the outside of the cylinder, a first rack and a second rack are slidably arranged on the inside of the shell, the first rack and the second rack are jointly meshed with a first gear, a drive assembly is arranged between the first rack and the reactor body, and the second rack is connected to the first piston.

[0008] As an optional solution of a double-coil reactor for chemical reactions described in the present invention, 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.

[0009] As an optional solution of a double-coil reactor for chemical reactions described in the present invention, the first coil is coiled on 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 on 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.

[0010] As an optional solution of a double-coil reactor for chemical reactions described in the present invention, wherein: a limit plate is installed on the inner wall of the cylinder, the limit plate is arranged below the first piston, and the distance between the limit plates is smaller than the diameter of the first piston, a limit rod is inserted in the middle of the first piston, and a first retainer is slidably sleeved on the lower end of the limit rod, the first retainer includes a first ring slidably sleeved on the lower end of the limit 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 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 limit 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 optional solution of a double-coil reactor for chemical reactions described in the present invention, wherein: a second retainer is slidably sleeved on the upper end of the limit rod, and the second retainer includes a third ring slidably sleeved on the upper end of the limit rod and a second fixed rod connected between the third ring and the inner wall of the cylinder.

[0012] As an optional solution of a double-coil reactor for chemical reactions described in the present invention, the driving assembly includes an air bag arranged on the inner side of the shell, an air pipe connected between the air bag and the reactor body, and a second piston slidably arranged on the inner side of the air pipe, the upper end of the air bag is connected to the inner wall of the shell, the lower end of the air bag 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 into the upper side of the shell, and a connecting rod is connected between the upper end of the second rack and the limit rod.

[0013] As an optional solution of a double-coil reactor for chemical reactions described in the present invention, a gear ring is rotatably arranged inside the cylinder, a sealing block is rotatably arranged inside the gear ring, the number of the sealing blocks is set to be several, several of the sealing blocks are meshed with the inner ring of the gear ring, and several of the sealing blocks are evenly arranged circumferentially inside the gear ring.

[0014] As an optional solution of a double-coil reactor for chemical reactions described in the present invention, the sealing blocks are rotatably arranged on the inner wall of the cylinder, the ends of the sealing blocks are located in the first cavity, a plurality of the sealing blocks together form a cylinder, 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, and the diameter of the third cavity is larger than the diameter of the second cavity.

[0015] As an optional scheme of a double-coil reactor for chemical reactions described in the present invention, wherein: 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 set to "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.

[0016] As an optional scheme for a double-coil reactor for chemical reactions described in the present invention, wherein: a positioning pin is slidably inserted into the inner wall of the cylinder, a positioning groove for use 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, 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 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 conflicts with the first piston.

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

[0018] 1. In the double-coil reactor for chemical reactions, the air pressure in the reactor body increases rapidly, so that the gas pushes the first piston upward into the second cavity, and a small gap is generated between the first piston and the inner wall of the second cavity, so that the gas in the reactor body is gradually discharged through the small gap. When the air pressure continues to increase, the gas in the reactor body continues to push the first piston upward. At the same time, the gas in the reactor body also pushes the second piston upward, and presses the air in the air pipe into the airbag, so that the lower end of the airbag drives the first rack to move downward, and the first gear is meshed with the first rack and the second rack, so that the second rack generates an upward pulling force on the first piston through the limit rod, so that the first piston is moved up into the third cavity, and a large gap is generated between the first piston and the inner wall of the third cavity, so that the gas in the reactor body is quickly discharged through the large gap, thereby improving the pressure relief efficiency of the reactor body.

[0019] 2. In the double-coil reactor for chemical reactions, during the process of the first piston moving up to the third cavity, the positioning pin is first driven to pull out of the positioning groove, and then the first piston abuts against the inclined block, so that the inclined block drives the third rack to move left through the connecting rod, and the meshing of the third rack with the second gear drives the second gear to rotate, and the torsion spring is compressed, and then the meshing of the second gear with the gear ring drives the gear ring to rotate, and finally the meshing of the gear ring with the sealing block rotates the sealing block, so that the end of the sealing block is transferred to the inner wall of the cylinder, eliminating the obstruction of the sealing block to the airflow, increasing the diameter of the exhaust airflow in the first cavity, and further improving the pressure relief efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0022] Figure 3 It is an exploded view of the local structure of the present invention.

[0023] Figure 4It is a schematic diagram of the first state structure inside the cylinder of the present invention.

[0024] Figure 5 It is a schematic diagram of the second state structure inside the cylinder of the present invention.

[0025] Figure 6 It is a schematic diagram of the third state structure inside the cylinder of the present invention.

[0026] Figure 7 For the present invention Figure 6 Enlarged structural diagram at A in the middle.

[0027] Figure 8 It is a schematic diagram of the sealing blocks of the present invention being closed together.

[0028] Fig. 9 It is a schematic diagram of the structure of the sealing blocks of the present invention being unfolded with each other.

[0029] Fig.10 It is a schematic diagram of the three-dimensional structure of the inclined block of the present invention.

[0030] Fig.11 It is a schematic diagram of the cutaway structure of the oblique 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; 140, first cavity; 150, second cavity; 160, third cavity; 170, first piston; 180, first spring; 181, stopper; 182, stopper rod; 183, first retainer; 1831, first ring; 1832, second ring; 1833, The first fixing rod; 184, the second retainer; 1841, the third ring; 1842, the second fixing rod; 190, the housing; 200, the first rack; 210, the second rack; 220, the first gear; 230, the drive assembly; 231, the air bag; 232, the air pipe; 233, the second piston; 234, the connecting rod; 240, the gear ring; 241, the sealing block; 242, the second gear; 243, the torsion spring; 250, the third rack; 251, the connecting rod; 252, the bevel block; 260, the positioning pin; 261, the positioning groove; 262, the second spring. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Embodiment 1: This embodiment is intended to promote the solution of the problem that when the existing double coil reactor is reacting, some reactants with violent chemical reactions will quickly generate a large amount of gas, quickly increase the pressure in the reactor, and easily cause explosion and other dangers. However, the aperture of the pressure relief valve is difficult to adjust according to the change of the pressure in the reactor, which easily affects 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 reaction, comprising 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, 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 the reactant 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 product in the reactor body 100. The first coil 110 is coiled on the upper part of the side wall of the reactor body 100, and 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 coiled on the lower part of the side wall of the reactor body 100, and 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, so as to facilitate the cooling liquid to be passed into the first coil 110 and the second coil 120, so as 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 which are connected in sequence are opened on the inner side of the cylinder 130. The lower end of the first cavity 140 is connected to the interior of the reactor body 100, and the upper end of the third cavity 160 is connected to 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 interior of the reactor body are kept sealed.

[0035] See Figure 3 and Figure 4A first spring 180 is arranged between the first piston 170 and the inner wall of the cylinder 130. Two limit plates 181 are fixedly installed on the inner wall of the cylinder 130. The limit plates 181 are arranged below the first piston 170, and the distance between the limit plates 181 is smaller than the diameter of the first piston 170 to prevent the first piston 170 from crossing the limit plates 181. A limit rod 182 is inserted in the middle of the first piston 170 through interference. A first retainer 183 is provided on the lower end of the limit rod 182. The first retainer 183 It includes a first ring 1831 slidably sleeved on the lower end of the limiting rod 182, a second ring 1832 concentrically arranged 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 130, the inner diameter of the second ring 1832 is larger than the outer diameter of the first ring 1831, the middle part 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 outer side of the first ring 1831.

[0036] The other end of the first fixed rod 1833 is fixedly connected to the inner wall of the cylinder 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, the lower end of the first spring 180 is fixedly connected to the upper side of the second ring 1832, and the upper end of the limiting rod 182 is slidably sleeved with a second retainer 184, the second retainer 184 includes a third ring 1841 slidably sleeved on the upper end of the limiting rod 182 and a second fixed rod 1842 fixedly connected between the third ring 1841 and the inner wall of the cylinder 130, and the first piston 170 is moved vertically up and down by the cooperation of the limiting rod 182 with the first retainer 183 and the second retainer 184.

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

[0038] The driving assembly 230 includes an air bag 231 disposed inside the housing 190, an air pipe 232 connected between the air bag 231 and the reactor body 100, and a second piston 233 slidably disposed inside the air pipe 232. The air bag 231, the air pipe 232, and the upper side of the second piston 233 are filled with air, and the air pressure on the upper side of the second piston 233 is greater than the air pressure required for normal reaction in the reactor body 100. The inner diameter of the middle part of the air pipe 232 is greater than the inner diameter of the two ends. The second piston 233 is The airbag 231 is slidably arranged in the middle of the air pipe 232, the upper end of the airbag 231 is fixedly connected to the inner wall of the shell 190, the lower end of the airbag 231 is fixedly connected to the second rack 210, the first gear 220 is rotatably arranged inside the shell 190 through a bearing, and the first rack 200 and the second rack 210 are respectively meshed with the two sides of the first gear 220, the upper end of the second rack 210 is slidably inserted on the upper side of the shell 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 large amount of gas is generated by a violent reaction in the reactor body 100, the gas pressure in the reactor body 100 increases rapidly, so that the gas pushes 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, so that the gas in the reactor body 100 is gradually discharged through the small gap;

[0040] When the air pressure continues to increase, the gas in the reactor body 100 continues to push the first piston 170 upward. At the same time, the air pressure in 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 in the air pipe 232 into the airbag 231, so that the lower end of the airbag 231 drives the first rack 200 to move downward, and the first gear 220 is meshed with the first rack 200 and the second rack 210, so that 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, so that the gas in the reactor body 100 is quickly discharged through the large gap, thereby improving the pressure relief efficiency of the reactor body 100. After the pressure relief is completed, the first piston 170 moves down and resets due to the rebound force of the first spring 180, and tries to solve the problem that when the existing double-coil reactor is reacting, some reactants with violent chemical reactions will quickly generate a large amount of gas, quickly increase the pressure in the reactor, and easily cause explosions and other dangers. However, the aperture of the pressure relief valve is difficult to adjust according to the change of the pressure in the reactor, which easily affects the pressure relief efficiency of the reactor.

[0041] Embodiment 2: This embodiment is intended to further promote the solution of the problem that the diameter of the gas flow through the first cavity 140 in the reactor body 100 is limited, thereby easily affecting the pressure relief efficiency. This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figure 1 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 and Fig.11 A gear ring 240 is rotatably provided inside the cylinder 130, and a sealing block 241 is rotatably provided inside the gear ring 240. The number of sealing blocks 241 is set to be several, and the several sealing blocks 241 are all meshed with the inner ring of the gear ring 240, and the several sealing blocks 241 are evenly arranged inside the gear ring 240 in an annular direction. The sealing blocks 241 are all rotatably provided on the inner wall of the cylinder 130, and the ends of the sealing blocks 241 are all located in the first cavity 140. The ends of the several sealing blocks 241 together form a cylinder, and the inner diameter of the cylinder is smaller than the diameter of the first cavity 140. The first piston 170 is slidably provided on the inner side of the cylinder formed by the sealing blocks 241. The sealing blocks 241 are sealed by conventional technical means. The diameter of the second cavity 150 is the same as that of the first cavity 140, and the diameter of the third cavity 160 is larger than the diameter of the second cavity 150.

[0042] See Fig.10 and Fig.11 A second gear 242 is also rotatably provided on the inner side of the cylinder 130, and the second gear 242 is meshed with the outer ring of the gear ring 240. A torsion spring 243 is coaxially provided on the side of the second gear 242, and the two ends of the torsion spring 243 are respectively fixedly connected to the second gear 242 and the inner wall of the cylinder 130. A third rack 250 meshing with the second gear 242 is also slidably provided on the inner side of the cylinder 130, and a connecting rod 251 is fixedly installed on the outer side of the third rack 250. The vertical section of the connecting rod 251 is set to be "L" shaped, and the upper end of the connecting rod 251 is slidably inserted into the inner wall of the cylinder 130. The connection point between the connecting rod 251 and the inner wall of the cylinder 130 is sealed by conventional technical means, and an inclined block 252 is fixedly installed on the upper end of the connecting rod 251. The inclined block 252 is located in the third cavity 160, and the inclined block 252 intermittently conflicts with the first piston 170.

[0043] See Figure 6 and Figure 7A positioning pin 260 is slidably plugged into the inner wall of the cylinder 130, and the plug-in position is sealed by conventional technical means. A positioning groove 261 used in conjunction with the positioning pin 260 is opened on 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 set in a funnel shape, so that the positioning pin 260 is easy to insert into the positioning groove 261. A second spring 262 is sleeved on the outer side of the positioning pin 260, and the two ends of the second spring 262 are respectively fixedly connected to the positioning pin 260 and the inside of the cylinder 130. The vertical section of the positioning pin 260 is L-shaped, and 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 conflicts with the top of the first piston 170.

[0044] In this embodiment: during the process of the first piston 170 moving up to the third cavity 160, the positioning pin 260 is first driven to pull out of the positioning groove 261, and then the first piston 170 abuts against the inclined block 252, so that the inclined block 252 drives the third rack 250 to move left through the connecting rod 251, and the engagement of the third rack 250 with the second gear 242 drives the second gear 242 to rotate, and the torsion spring 243 is compressed, and then the engagement of the second gear 242 with the gear ring 240 drives the gear ring 240 to rotate, and finally the engagement of the gear ring 240 with the sealing block 241 rotates the sealing block 241, so that the end of the sealing block 241 is transferred to the inner wall of the cylinder 130, thereby eliminating the obstruction of the airflow by the sealing block 241, increasing the diameter of the exhaust airflow 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, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0046] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A double coil reactor for chemical reaction, comprising 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) connected to the outside of the reactor body (100), characterized in that: A first cavity (140), a second cavity (150) and a third cavity (160) which are connected in sequence are provided on the inner side of the cylinder (130); a first piston (170) is slidably arranged in the first cavity (140); a first spring (180) is arranged between the first piston (170) and the inner wall of the cylinder (130); a shell (190) is installed on the outer side of the cylinder (130); a first rack (200) and a second rack (210) are slidably arranged on the inner side of the shell (190); the first rack (200) and the second rack (210) are meshed with a first gear (220); a driving assembly (230) is arranged between the first rack (200) and the reactor body (100); and the second rack (210) is connected to the first piston (170).

2. A double coil reactor for chemical reaction according to claim 1, characterized in that: A feed pipe (101) is arranged on the upper side 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 on the lower side of the reactor body (100), and the discharge pipe (102) is used to discharge the product in the reactor body (100).

3. A double coil reactor for chemical reaction according to claim 1, characterized in that: The first coil (110) is coiled around the upper part of the side wall of the reactor body (100), the lower end of the first coil (110) is arranged as a first water inlet pipe (111), and the upper end of the first coil (110) is arranged as a first water outlet pipe (112); the second coil (120) is coiled around the lower part of the side wall of the reactor body (100), the lower end of the second coil (120) is arranged as a second water inlet pipe (121), and the upper end of the second coil (120) is arranged as a second water outlet pipe (122).

4. A double coil reactor for chemical reaction according to claim 1, characterized in that: A limit plate (181) is installed on the inner wall of the cylinder (130). The limit plate (181) is arranged below the first piston (170), and the distance between the limit plates (181) is smaller than the diameter of the first piston (170). A limit rod (182) is inserted in the middle of the first piston (170). A first retainer (183) is slidably sleeved on the lower end of the limit rod (182). The first retainer (183) comprises a first circular ring (1831) slidably sleeved on the lower end of the limit rod (182), a second circular ring (1832) concentrically arranged with the first circular ring (1831), and a first fixing rod (1833) connected between the first circular ring (1831) and the inner wall of the cylinder (130). The inner diameter of the second circular ring (1832) is greater than the outer diameter of the first circular ring (1831); the middle portion of the first fixing rod (1833) is inserted into the side portion of the second circular ring (1832); one end of the first fixing rod (1833) is connected to the outer side of the first circular ring (1831); the other end of the first fixing rod (1833) is connected to the inner wall of the cylinder (130); the first spring (180) is arranged between the first piston (170) and the second circular ring (1832); the first spring (180) is sleeved on the outer side of the limiting rod (182); the upper end of the first spring (180) is connected to the bottom of the first piston (170); and the lower end of the first spring (180) is connected to the upper side of the second circular ring (1832).

5. A double coil reactor for chemical reaction according to claim 4, characterized in that: The upper end of the limiting rod (182) is slidably sleeved with a second retainer (184), and the second retainer (184) comprises a third ring (1841) slidably sleeved on the upper end of the limiting rod (182) and a second fixing rod (1842) connected between the third ring (1841) and the inner wall of the cylinder (130).

6. A double coil reactor for chemical reaction according to claim 4, characterized in that: The driving assembly (230) comprises an air bag (231) arranged inside the housing (190), an air pipe (232) connected between the air bag (231) and the reactor body (100), and a second piston (233) slidably arranged inside the air pipe (232); the upper end of the air bag (231) is connected to the inner wall of the housing (190); the lower end of the air bag (231) is connected to the second rack (210); the first gear (220) is rotatably arranged inside the housing (190); the first rack (200) and the second rack (210) are respectively meshed with two 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 connected between the upper end of the second rack (210) and the limiting rod (182).

7. A double coil reactor for chemical reaction according to claim 1, characterized in that: A gear ring (240) is rotatably arranged inside the cylinder (130), and a sealing block (241) is rotatably arranged inside the gear ring (240). The number of the sealing blocks (241) is set to be a plurality, and the plurality of sealing blocks (241) are all meshed with the inner ring of the gear ring (240), and the plurality of sealing blocks (241) are evenly arranged in the circumferential direction inside the gear ring (240).

8. A double coil reactor for chemical reaction according to claim 7, characterized in that: The sealing blocks (241) are all rotatably arranged on the inner wall of the cylinder (130), and the ends of the sealing blocks (241) are all located in the first cavity (140). The plurality of sealing blocks (241) together form a cylinder, and the inner diameter of the cylinder is smaller than the diameter of the first cavity (140). The first piston (170) is slidably arranged on the inner side of the cylinder formed by the sealing blocks (241). The diameter of the second cavity (150) is the same as the diameter of the first cavity (140), and the diameter of the third cavity (160) is larger than the diameter of the second cavity (150).

9. A double coil reactor for chemical reaction according to claim 8, characterized in that: A second gear (242) is rotatably arranged on the inner side of the cylinder (130), and the second gear (242 is meshed with the outer ring of the gear ring (240). A torsion spring (243) is coaxially arranged on the side of the second gear (242), and the two ends of the torsion spring (243) are respectively connected to the second gear (242) and the inner wall of the cylinder (130). A third rack (250) meshing with the second gear (242) is slidably arranged on the inner side of the cylinder (130), and a connecting rod (251) is installed on the outer side of the third rack (250). The vertical cross section of the connecting rod (251) is set in an "L" shape. The upper end of the connecting rod (251) is slidably inserted on the inner wall of the cylinder (130), and an inclined block (252) is installed on the upper end of the connecting rod (251). The inclined block (252) is located in the third cavity (160), and the inclined block (252) intermittently contacts the first piston (170).

10. A double coil reactor for chemical reaction according to claim 9, characterized in that: A positioning pin (260) is slidably inserted into the inner wall of the cylinder (130), a positioning groove (261) for use with the positioning pin (260) is opened on the upper side of one of the sealing blocks (241), the positioning pin (260) is inserted into the positioning groove (261), a second spring (262) is sleeved on the outer side of the positioning pin (260), two ends of the second spring (262) are respectively connected to the positioning pin (260) and the inside of the cylinder (130), the vertical 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 first piston (170).

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