A kind of reaction kettle detection sampling mechanism and sampling method

Abstract

The present invention discloses a reaction kettle detection sampling mechanism and a sampling method, which relate to the field of sampling technology; in order to solve the problem of comprehensive sampling; specifically comprises a plurality of sampling ports arranged on the side wall of the reaction kettle, the side wall of the sampling port is connected with a tee, one of the outlets of the plurality of tees is connected with the same multi-way, the other outlet of the plurality of tees and the outlet of the multi-way are connected with the same group of fluid integrated drive sampling parts, the fluid integrated drive sampling part comprises a support, a sample switching platform arranged on the top of the support, and a power mechanism arranged on one side of the support. The present invention designs the pipeline and uses the fluid integrated drive sampling part for sampling. On the one hand, it can sample the samples of each layer and the mixed samples of each layer at the same time, so that local analysis and global analysis can be performed, simplifying the operation steps of autonomous mixing, and based on the design of "peristaltic pump", it can drive a variety of samples comprehensively and sample them at the same time.

Description

Technical Field

[0001] The invention relates to the technical field of sampling, and in particular to a reaction kettle detection sampling mechanism and a sampling method. Background Art

[0002] Reactors are broadly understood as containers for physical or chemical reactions. Through the structural design and parameter configuration of the container, the heating, evaporation, cooling and low-speed mixing functions required by the process are realized. Reactors are widely used in the fields of petroleum, chemical industry, rubber, pesticides, dyes, medicine and food. During the reaction process of the reactor, it is necessary to stir and heat it. At the same time, in order to understand the reaction situation in the reactor, it is necessary to sample and test the materials in the reactor.

[0003] After searching, the Chinese patent publication number CN218546260U discloses a sampling device for a reactor, including a reactor body and a mixing assembly installed at the center of the reactor body, a feed pipe is connected to one side of the top of the reactor body, and a discharge pipe is connected to one side of the bottom of the reactor body, the bottom outer wall of the reactor body is installed with equidistantly distributed support legs, and a sampling structure is installed on one side of the top of the reactor body; the sampling structure includes a sampling tube installed in the reactor body, strip holes opened on both sides of the sampling tube and located inside the reactor body, and a sampling screw rotatably connected to the center of the inner wall of the sampling tube.

[0004] The above patent has the following shortcomings: although it can perform multi-layer sampling, each layer of samples only reflects the local situation of the reaction material. When it is necessary to understand the material situation in the entire reactor, it is necessary to sample multiple different layers, and then mix them before testing, which is a relatively cumbersome procedure. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a reaction kettle detection sampling mechanism and a sampling method.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A reaction kettle detection sampling mechanism includes a plurality of sampling ports arranged on the side wall of the reaction kettle.

[0008] The side wall of the sampling port is connected with a tee, one of the outlets of the multiple tees is connected with the same multi-way, and the other outlets of the multiple tees and the outlets of the multi-way are connected with the same set of fluid integrated driving sampling parts;

[0009] The fluid integrated drive sampling unit includes a support, a sample switching platform arranged on the top of the support, a power mechanism arranged on one side of the support, a double-degree-of-freedom transmission mechanism arranged on the other side of the support, and a fluid drive mechanism connected to one side of the support through a bracket, wherein the power mechanism is coupled to the fluid drive mechanism through the double-degree-of-freedom transmission mechanism;

[0010] The fluid driving mechanism comprises a shell, a hollow shaft rotatably connected to the inner wall of the shell, and a solid shaft rotatably connected to the inner wall of the hollow shaft, wherein the inner wall of the shell is respectively fixed with a plurality of elastic hoses 1 and an elastic hose 2 matching the number of sampling ports, the outer wall of the hollow shaft is rotatably connected with a plurality of squeezing rollers 1, the outer wall of the solid shaft is rotatably connected with a plurality of squeezing rollers 2, the squeezing rollers 1 roll and squeeze fit with the elastic hose 1, and the squeezing rollers 2 roll and squeeze fit with the elastic hose 2;

[0011] The inlet of the first elastic hose is connected to one of the outlets of the tee, and the inlet of the second elastic hose is connected to the outlet of the multi-way.

[0012] Preferably, the heights of the plurality of sampling ports are different.

[0013] Furthermore: the outlet of the first elastic hose is connected to a layer sample nozzle, and the outlet of the second elastic hose is connected to a mixed sample nozzle.

[0014] On the basis of the above scheme: the dual-degree-of-freedom transmission mechanism includes an outer ring gear and a sun gear rotatably connected to the side wall of the support, the outer ring gear and the sun gear are meshed with a plurality of circular arrays of planetary gears on the opposite side, one side of the planetary gear is rotatably connected to a planet carrier, the outer ring gear is fixed to the end of the hollow shaft, the planet carrier is fixed to the end of the solid shaft, and the power mechanism transmission is matched with the side wall of the sun gear.

[0015] A better solution among the above solutions is that the sample switching platform includes a turntable and a plurality of carriers fixed to the outer wall of the top of the turntable in a circular array, and the inner wall of the carrier is provided with limiting hole 1 and limiting hole 2 for limiting the sample container.

[0016] As a further solution of the present invention: the power mechanism includes a full gear 1, a half gear, an electric motor and a full gear 2, the full gear 1 is connected to the side wall of the sun gear through a connecting shaft, the electric motor is fixed to the side wall of the support through a motor frame, and the output shaft of the motor is transmission-connected to the end of the half gear; the outer wall of the output shaft of the motor is fixedly connected to a transmission plate, the half gear is rotationally connected to the outer wall of the transmission plate, and the transmission plate is radially slidably connected to a plurality of arc head clamping rods, the end of the arc head clamping rod is buckled with a spring, the other end of the spring is buckled to the inner wall of the transmission plate, and the inner wall of the half gear is provided with a clamping groove matching the arc head clamping rod.

[0017] At the same time, the half gear is not meshed with the full gear one and the full gear two at the same time.

[0018] As a preferred embodiment of the present invention: a torsion spring is fixed to the side surface of the full gear one, and the other end of the torsion spring is fixed to the side wall of the support.

[0019] At the same time, the full gear 2 is rotatably connected to the support via a linkage shaft, the turntable is rotatably connected to the support via a rotating shaft, and the linkage shaft and the rotating shaft are matched through a bevel gear set.

[0020] A sampling method for a reactor detection sampling mechanism comprises the following steps:

[0021] S1: The sample container can be inserted into the limiting hole 1 and the limiting hole 2 respectively for fixing;

[0022] S2: Set the sampling time period through the timer, and set the number of rotations of the motor for a sampling action as one circle;

[0023] S3: Then the sampling node is reached, the motor starts to sample, and the station is switched after sampling;

[0024] S4: The sample containers in the limiting hole 1 and the limiting hole 2 can be taken out for detection respectively, so as to obtain the local detection result and the global detection result in the reactor.

[0025] The beneficial effects of the present invention are:

[0026] 1. The present invention designs the pipeline and utilizes the fluid integrated driving sampling part to perform sampling. On the one hand, it can simultaneously sample the samples of each layer and the mixed samples of each layer, thereby enabling local analysis and global analysis, simplifying the operation steps of autonomous mixing. At the same time, based on the design of the "peristaltic pump", it can comprehensively drive a variety of samples and sample them simultaneously.

[0027] 2. The present invention, by setting up a double-freedom transmission mechanism, is based on the principle of a "planetary gear set" and adopts two double-open degrees of freedom, that is, the planetary gear can revolve freely and the outer ring gear can rotate freely. Therefore, on the one hand, the rotation of the hollow shaft and the solid shaft can be driven by a single power of the power mechanism to achieve power integration. On the other hand, the movement of the outer ring gear and the planetary gear are two mutually inhibited degrees of freedom. When a local blockage occurs in the entire pipeline network, only one smooth passage is required to ensure the free rotation of the sun gear, thereby preventing the power mechanism from being suffocated by the pipeline and increasing safety.

[0028] 3. The present invention, by providing a sample switching stage and utilizing a multi-group design, can achieve multiple sampling effects by utilizing the rotation of the turntable during the entire reaction process.

[0029] 4. The present invention, by setting a half gear and a full gear one, adopts intermittent meshing, so that after a single sampling, the full gear one can be disengaged from the half gear and can rebound under the torsion force of the torsion spring, thereby preventing the waste of samples in the entire pipeline on the one hand, and preventing the inaccurate sampling time sequence caused by the presence of samples in the pipeline during the next sampling on the other hand.

[0030] 5. The present invention, by setting a full gear one, a half gear, and a full gear two, adopts intermittent meshing, thereby cooperating with a timer and controlling the number of rotations of a rotation cycle of the motor, and can realize the sequence of first sampling and then switching the sampling stations. On the basis of power linkage, it also simplifies the control logic. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 Schematic diagram of the pipeline structure of a reaction kettle detection sampling mechanism proposed by the present invention Figure 1 ;

[0032] Figure 2 A schematic diagram of the position of a sampling port of a reactor detection sampling mechanism proposed by the present invention relative to the reactor;

[0033] Figure 3 This is a schematic diagram of the overall structure of a fluid integrated drive sampling part of a reaction kettle detection sampling mechanism proposed by the present invention;

[0034] Figure 4 This is a schematic diagram of the structure of a fluid driving mechanism of a reaction kettle detection sampling mechanism proposed by the present invention;

[0035] Figure 5 A schematic diagram of the double-degree-of-freedom transmission mechanism of a reaction kettle detection sampling mechanism proposed by the present invention

[0036] Figure 6 This is a schematic diagram of the sample switching stage structure of a reaction kettle detection sampling mechanism proposed by the present invention;

[0037] Figure 7 This is a schematic diagram of the power mechanism structure of a reaction kettle detection sampling mechanism proposed by the present invention;

[0038] Figure 8 Schematic diagram of the pipeline structure of a reaction kettle detection sampling mechanism proposed by the present invention Figure 2 ;

[0039] Fig. 9 This is a structural diagram of Example 2 of a reaction kettle detection sampling mechanism proposed by the present invention.

[0040] In the figure: 1, reactor; 2, sampling port; 3, support; 4, power mechanism; 5, dual-freedom transmission mechanism; 6, bracket; 7, fluid drive mechanism; 8a, three-way; 8b, multi-way; 9, sample switching platform; 10, shell; 11, elastic hose 2; 12, hollow shaft; 13, elastic hose 1; 14, squeeze roller 1; 15, layer sample nozzle; 16, mixed sample nozzle; 17, squeeze roller 2; 18, solid shaft ; 19. Outer ring gear; 20. Planetary gear; 21. Sun gear; 22. Planetary carrier; 23. Turntable; 24. Carrier; 25. Limit hole one; 26. Limit hole two; 27. Torsion spring; 28. Full gear one; 29. ​​Half gear; 30. Motor frame; 31. Motor; 32. Full gear two; 33. Linkage shaft; 34. Rotating shaft; 35. Bevel gear set; 36. Transmission plate; 37. Spring; 38. Arc head clamp. DETAILED DESCRIPTION

[0041] The technical solution of the present invention is further described in detail below in conjunction with specific implementation methods.

[0042] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0043] A reaction kettle detection sampling mechanism, such as Figure 1-Figure 8 As shown, it includes multiple sampling ports 2 arranged on the side wall of the reactor 1, the side wall of the sampling port 2 is connected with a tee 8a, one of the outlets of the multiple tees 8a is connected with the same multi-way 8b, and the other outlets of the multiple tees 8a and the outlets of the multi-way 8b are connected with the same set of fluid integrated drive sampling parts.

[0044] The heights of the plurality of sampling ports 2 are different.

[0045] The fluid integrated drive sampling part includes a support 3, a sample switching platform 9 arranged on the top of the support 3, a power mechanism 4 arranged on one side of the support 3, a double-degree-of-freedom transmission mechanism 5 arranged on the other side of the support 3, and a fluid drive mechanism 7 connected to one side of the support 3 through a bracket 6. The power mechanism 4 is transmitted and coordinated with the fluid drive mechanism 7 through the double-degree-of-freedom transmission mechanism 5.

[0046] The fluid driving mechanism 7 includes a shell 10 and a hollow shaft 12 rotatably connected to the inner wall of the shell 10 and a solid shaft 18 rotatably connected to the inner wall of the hollow shaft 12. The inner wall of the shell 10 is respectively fixed with a plurality of elastic hoses 13 matching the number of sampling ports 2 and an elastic hose 2 11. The outer wall of the hollow shaft 12 is rotatably connected with a plurality of squeezing rollers 14. The outer wall of the solid shaft 18 is rotatably connected with a plurality of squeezing rollers 2 17. The squeezing rollers 14 roll and squeeze with the elastic hose 13, and the squeezing rollers 2 17 roll and squeeze with the elastic hose 2 11.

[0047] The inlet of the first elastic hose 13 is connected to one of the outlets of the tee 8a, and the inlet of the second elastic hose 11 is connected to the outlet of the multi-way 8b.

[0048] The outlet of the first elastic hose 13 is connected to a layer sample nozzle 15 , and the outlet of the second elastic hose 11 is connected to a mixing sample nozzle 16 .

[0049] When in use, a chemical reaction is carried out in the reactor, which may be accompanied by heating, stirring, etc. When sampling is required during the reaction, the power mechanism 4 drives the solid shaft 18 and the hollow shaft 12 to rotate through the double-degree-of-freedom transmission mechanism 5, thereby rotating and squeezing the elastic hose 1 13 and the elastic hose 2 11. The elastic hose 2 11 and the elastic hose 1 13 after being squeezed are subjected to their own elastic rebound, thereby generating negative pressure, and the suction power is generated by the negative pressure. The suction power of the elastic hose 2 11 is applied to the multi-way 8b, and the suction power of the elastic hose 1 13 is applied to the tee 8a, and then they are jointly applied to the sampling port 2, so that the sample is sucked through the sampling port 2. The sample sucked by the sampling port 2 is divided through the tee 8a, and a part of it is transported to the layer sample nozzle 15 through the elastic hose 13, and the other part is mixed through the multi-way 8b, and then transported to the mixing nozzle 16 through the elastic hose 2 11. At this time, sample collection containers can be placed at the layer sample nozzle 15 and the mixing nozzle 16, respectively, so that the sample of each layer and the mixed sample can be sampled respectively.

[0050] This device, through the design of the pipeline, uses the fluid integrated drive sampling part to carry out sampling. On the one hand, it can simultaneously sample the sample of each layer and the sample after each layer is mixed, so as to carry out local analysis and global analysis, simplifying the operation steps of autonomous mixing. At the same time, based on the design of the "peristaltic pump", it can comprehensively drive multiple samples and sample them simultaneously.

[0051] To solve security issues; Figure 5As shown, the dual-freedom transmission mechanism 5 includes an outer ring gear 19 and a sun gear 21 rotatably connected to the side wall of the support 3, and the outer ring gear 19 and the sun gear 21 are meshed with a plurality of circular array planetary gears 20 on the opposite side, and one side of the planetary gear 20 is rotatably connected to a planet carrier 22, the outer ring gear 19 is fixed to the end of the hollow shaft 12, the planet carrier 22 is fixed to the end of the solid shaft 18, and the power mechanism 4 is transmission-matched to the side wall of the sun gear 21.

[0052] When the power mechanism 4 drives the sun gear 21 to rotate, it can drive the outer ring gear 19 to rotate and drive the planetary gear 20 to rotate along the sun gear 21, and without considering the friction loss, the total rotational power of the outer ring gear 19 and the planetary gear 20 is equal to the total rotational power of the sun gear 21.

[0053] Since multiple layer sampling and one mixed sampling form multiple parallel sampling pipelines, when traditionally driven by a pump, one pump can only correspond to one sampling pipeline. In this way, when the sampling pipeline is blocked, the pump will be suffocated.

[0054] This device, by setting up a double-freedom transmission mechanism 5, is based on the principle of a "planetary gear set" and adopts two double-open degrees of freedom, that is, the planetary gear 20 can revolve freely and the outer ring gear 19 can rotate freely. Therefore, on the one hand, the rotation of the hollow shaft 12 and the solid shaft 18 can be driven by the single power of the power mechanism 4 to achieve power integration. On the other hand, the movement of the outer ring gear 19 and the planetary gear 20 are two mutually inhibited degrees of freedom. When a local blockage occurs in the entire pipeline network, only one smooth passage is required to ensure the free rotation of the sun gear 21, thereby preventing the power mechanism 4 from being suffocated by the pipeline, thereby increasing safety.

[0055] In order to solve the problem of multiple interval sampling; Figure 6 As shown, the sample switching platform 9 includes a turntable 23 and a plurality of carriers 24 fixed to the top outer wall of the turntable 23 in a circular array. The inner wall of the carrier 24 is provided with a limiting hole 1 25 and a limiting hole 26 for limiting the sample container.

[0056] The sample container can be inserted into the limiting hole 1 25 and the limiting hole 26 for fixing. After a single sampling, the turntable 23 can be controlled to rotate an interval angle of a carrier 24 to switch the workstation, and then sampling can be performed again after a certain period of time.

[0057] The device, by providing a sample switching stage 9 and utilizing a multi-group design, can achieve multiple sampling effects by utilizing the rotation of the turntable 23 during the entire reaction process.

[0058] To solve the driver problem; Figure 7As shown, the power mechanism 4 includes a full gear 1 28, a half gear 29, a motor 31 and a full gear 2 32. The full gear 1 28 is connected to the side wall of the sun gear 21 through a connecting shaft, and the half gear 29 is not meshed with the full gear 1 28 and the full gear 2 32 at the same time. The motor 31 is fixed to the side wall of the support 3 through a motor frame 30, and the output shaft of the motor 31 is transmission-connected to the end of the half gear 29.

[0059] A torsion spring 27 is fixed to the side surface of the full gear 1 28 , and the other end of the torsion spring 27 is fixed to the side wall of the support 3 .

[0060] The full gear 2 32 is rotatably connected to the support 3 via a linkage shaft 33 , and the turntable 23 is rotatably connected to the support 3 via a rotation shaft 34 . The linkage shaft 33 and the rotation shaft 34 are matched with each other through a bevel gear set 35 .

[0061] The motor 31 is connected to a timer, which can be set according to actual needs, so as to realize the interval timing start of the motor 31, and the number of rotations of the motor 31 at a single start is one circle. When the motor 31 rotates, it will first drive the full gear 28 to rotate, thereby driving the sun gear 21 to rotate for sampling. During the sampling process, the torsion spring 27 is twisted until the half gear 29 is disengaged from the full gear 28. After the sampling is completed, the torsion spring 27 will drive the full gear 28 to rotate in the opposite direction and reset, and transport all the samples that have not flowed out of the pipeline to the reactor 1 again. Then the half gear 29 continues to rotate until it rotates to mesh with the full gear 2 32, which drives the full gear 2 32 to rotate, thereby driving the rotating shaft 34 to rotate through the linkage shaft 33 and the bevel gear set 35, thereby driving the turntable 23 to rotate.

[0062] The device, by setting a half gear 29 and a full gear 28, adopts intermittent meshing, so that after a single sampling, the full gear 28 and the half gear 29 are disengaged and can rebound under the torsion of the torsion spring 27, thereby preventing the waste of samples in the entire pipeline on the one hand, and preventing the inaccurate sampling time sequence caused by the presence of samples in the pipeline when sampling next time on the other hand.

[0063] This device, by setting a full gear 1 28, a half gear 29, and a full gear 2 32, adopts intermittent meshing, thereby cooperating with a timer and controlling the number of rotations of a rotation cycle of the motor 31, and can realize the sequence of first sampling and then switching the sampling station. On the basis of power linkage, it also simplifies the control logic.

[0064] When the present embodiment is in use, the timer can be set according to actual needs, so as to realize the interval timing start of the motor 31, and the number of rotations of the motor 31 for a single start is one circle, and then the sample container can be respectively inserted into the limit hole 1 25 and the limit hole 2 26 for fixing, when the motor 31 rotates, it will first drive the full gear 1 28 to rotate, thereby driving the sun gear 21 to rotate, when the sun gear 21 rotates, it can drive the outer gear ring 19 to rotate and drive the planetary gear 20 to rotate along the sun gear 21, and without considering the friction loss, the total rotation power of the outer gear ring 19 and the planetary gear 20 is equal to the total rotation power of the sun gear 21, the solid shaft 18 and the hollow shaft 12 rotate, thereby rotating and squeezing the elastic hose 1 13 and the elastic hose 2 11, and the elastic hose 2 11 and the elastic hose 1 13 after being squeezed are subjected to their own elastic rebound, thereby generating negative pressure, and the negative pressure is used to generate suction power, the suction power of the elastic hose 2 11 is applied to the multi-way 8b, and the suction power of the elastic hose 1 13 is applied to the three-way 8 a, and then they are applied to the sampling port 2 together, so that the sample is sucked through the sampling port 2. The sample sucked by the sampling port 2 is split through the three-way 8a, and one part is transported to the layer sample nozzle 15 through the elastic hose 13, and the other part is mixed through the multi-way 8b, and then transported to the mixing sample nozzle 16 through the elastic hose 2 11. At this time, sample collection containers can be placed at the layer sample nozzle 15 and the mixing sample nozzle 16 respectively, so that the sample of each layer and the mixed sample can be sampled respectively. During the sampling process, the torsion spring 27 is twisted until the half gear 29 is disengaged from the full gear 1 28. After the sampling is completed, the torsion spring 27 will drive the full gear 1 28 to rotate in the opposite direction and reset, and transport all the samples that have not flowed out of the pipeline to the reactor 1 again. Then the half gear 29 continues to rotate until it rotates to mesh with the full gear 2 32, which drives the full gear 2 32 to rotate, thereby driving the rotating shaft 34 to rotate through the linkage shaft 33 and the bevel gear set 35, thereby driving the turntable 23 to rotate to switch the workstation, and then sampling can be performed again after a certain period of time.

[0065] A reaction kettle detection sampling mechanism, this embodiment makes the following improvements on the basis of embodiment 1, such as Fig. 9 As shown, the outer wall of the output shaft of the motor 31 is fixedly connected to a transmission disk 36, the half gear 29 is rotatably connected to the outer wall of the transmission disk 36, and the transmission disk 36 is radially slidably connected to a plurality of arc head clamping rods 38, the end of the arc head clamping rod 38 is buckled with a spring 37, the other end of the spring 37 is buckled to the inner wall of the transmission disk 36, and the inner wall of the half gear 29 is provided with a clamping groove matching the arc head clamping rod 38.

[0066] When the present embodiment is in use, under normal conditions, the motor 31 can drive the transmission disk 36 to rotate, thereby driving the half gear 29 to rotate through the limiting action of the arc head clamping rod 38 and the clamping groove. When the component becomes stuck and the half gear 29 cannot rotate, the motor 31 cannot rotate at this time, resulting in a large transmission torque between the transmission disk 36 and the half gear 29, thereby overcoming the elastic force of the spring 37, causing the arc head clamping rod 38 to contract, preventing the motor 31 from suffocating.

[0067] A sampling method for a reactor detection sampling mechanism, such as Figure 1-Figure 8 As shown, the following steps are included:

[0068] S1: The sample container can be inserted into the limiting hole 1 25 and the limiting hole 2 26 respectively for fixing;

[0069] S2: setting the sampling time period through the timer, and setting the number of rotations of the sampling action motor 31 to one circle;

[0070] S3: Then the sampling node is reached, the motor 31 is started to sample, and the station is switched after sampling;

[0071] S4: The sample containers in the first limiting hole 25 and the second limiting hole 26 can be taken out for testing respectively to obtain the local testing results and the global testing results in the reactor.

[0072] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A reaction kettle detection sampling mechanism, comprising a plurality of sampling ports (2) arranged on the side wall of a reaction kettle (1), characterized in that: The side wall of the sampling port (2) is connected to a tee (8a), one of the outlets of the plurality of tees (8a) is connected to the same multi-way (8b), and the other outlets of the plurality of tees (8a) and the outlet of the multi-way (8b) are connected to the same set of fluid integrated drive sampling parts; The fluid integrated drive sampling unit comprises a support (3), a sample switching platform (9) arranged on the top of the support (3), a power mechanism (4) arranged on one side of the support (3), a double-degree-of-freedom transmission mechanism (5) arranged on the other side of the support (3), and a fluid drive mechanism (7) connected to one side of the support (3) via a bracket (6), wherein the power mechanism (4) is coupled to the fluid drive mechanism (7) via the double-degree-of-freedom transmission mechanism (5); The fluid drive mechanism (7) comprises a housing (10), a hollow shaft (12) rotatably connected to the inner wall of the housing (10), and a solid shaft (18) rotatably connected to the inner wall of the hollow shaft (12); a plurality of elastic hoses (13) matching the number of sampling ports (2) and an elastic hose (11) are fixed to the inner wall of the housing (10); a plurality of squeezing rollers (14) are rotatably connected to the outer wall of the hollow shaft (12); a plurality of squeezing rollers (17) are rotatably connected to the outer wall of the solid shaft (18); the squeezing rollers (14) and the elastic hoses (13) are rolled and squeezed together, and the squeezing rollers (17) and the elastic hoses (11) are rolled and squeezed together; The inlet of the first elastic hose (13) is connected to one of the outlets of the tee (8a), and the inlet of the second elastic hose (11) is connected to the outlet of the multi-way (8b).

2. A reaction kettle detection sampling mechanism according to claim 1, characterized in that: The heights of the plurality of sampling ports (2) are different.

3. A reaction kettle detection sampling mechanism according to claim 1, characterized in that: The outlet of the first elastic hose (13) is connected to a layer sample nozzle (15), and the outlet of the second elastic hose (11) is connected to a mixing sample nozzle (16).

4. A reaction kettle detection sampling mechanism according to claim 1, characterized in that: The dual-freedom transmission mechanism (5) comprises an outer gear ring (19) rotatably connected to the side wall of the support (3) and a sun gear (21); a plurality of circular array planetary gears (20) are meshed on the side opposite to the outer gear ring (19) and the sun gear (21); one side of the planetary gear (20) is rotatably connected to a planet carrier (22); the outer gear ring (19) is fixed to the end of a hollow shaft (12), the planet carrier (22) is fixed to the end of a solid shaft (18), and the power mechanism (4) is transmission-matched to the side wall of the sun gear (21).

5. A reaction kettle detection sampling mechanism according to claim 4, characterized in that: The sample switching platform (9) comprises a turntable (23) and a plurality of carriers (24) fixed to the top outer wall of the turntable (23) in a circular array, and the inner wall of the carrier (24) is provided with a first limiting hole (25) and a second limiting hole (26) for limiting the position of the sample container.

6. A reaction kettle detection sampling mechanism according to claim 5, characterized in that: The power mechanism (4) comprises a full gear 1 (28), a half gear (29), a motor (31) and a full gear 2 (32); the full gear 1 (28) is connected to the side wall of the sun gear (21) via a connecting shaft; the motor (31) is fixed to the side wall of the support (3) via a motor frame (30); and the output shaft of the motor (31) is drivingly connected to the end of the half gear (29); the outer wall of the output shaft of the motor (31) is fixedly connected to a transmission disk (36); the half gear (29) is rotationally connected to the outer wall of the transmission disk (36); and the transmission disk (36) is radially slidably connected to a plurality of arc head clamping rods (38); the end of the arc head clamping rod (38) is buckled with a spring (37); the other end of the spring (37) is buckled with the inner wall of the transmission disk (36); and the inner wall of the half gear (29) is provided with a clamping groove matching the arc head clamping rod (38).

7. A reaction kettle detection sampling mechanism according to claim 6, characterized in that: The half gear (29) is not meshed with the full gear one (28) or the full gear two (32) at the same time.

8. A reaction kettle detection sampling mechanism according to claim 6, characterized in that: A torsion spring (27) is fixed to the side surface of the full gear one (28), and the other end of the torsion spring (27) is fixed to the side wall of the support (3).

9. A reaction kettle detection sampling mechanism according to claim 6, characterized in that: The full gear 2 (32) is rotatably connected to the support (3) via a linkage shaft (33), the rotating disk (23) is rotatably connected to the support (3) via a rotating shaft (34), and the linkage shaft (33) and the rotating shaft (34) are matched in transmission via a bevel gear set (35).

10. A sampling method for a reaction kettle detection sampling mechanism, which is a sampling method for a reaction kettle detection sampling mechanism according to any one of claims 6 to 9, characterized in that: The following steps are involved: S1: The sample container can be inserted into the limiting hole 1 (25) and the limiting hole 2 (26) respectively for fixation; S2: setting a sampling time period through a timer, and setting the number of rotations of a sampling action motor (31) to one circle; S3: Then, the sampling node is reached, the motor (31) is started to perform sampling, and the workstation is switched after sampling; S4: The sample containers in the limiting hole 1 (25) and the limiting hole 2 (26) can be taken out respectively for detection, and the local detection results and the global detection results in the reactor can be obtained.

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