A corrosion-resistant structure sensor applied to research and development of chemical products

Abstract

The application discloses a kind of anti-corrosion structure sensors applied to chemical product research and development in the technical field of chemical industry, including protective shell and sensor main body, protective shell is sleeved in sensor main body outer, the lower end of sensor main body is fixedly installed with detection cavity, the lower end of detection cavity is fixedly installed with limit seat, limit seat is fixedly installed with inlet pipe in, the lower end of inlet pipe is fixedly installed with upper connecting pipe, the lower end of upper connecting pipe is rotatably installed with lower connecting pipe, the lower end of lower connecting pipe extends to protective shell outside and is fixedly installed with sampling tube through the lower end of protective shell, the lower end of sampling tube is fixedly installed with sampling piece.The application is convenient to detect deep liquid temperature directly, avoid the interference of upper liquid to detection, avoid detection liquid to contact sensor directly, increase the corrosion resistance of sensor, avoid the sensitivity of sensor to be influenced by liquid corrosion parts.

Description

Technical Field

[0001] This invention relates to the field of chemical industry technology, specifically to a corrosion-resistant sensor used in the research and development of chemical products. Background Technology

[0002] In chemical production, it is necessary to mix various chemical raw materials to obtain the target product. The reaction between chemical raw materials is affected by environmental factors such as temperature and humidity, especially temperature. For most chemical raw material reactions, different reaction temperatures will yield different target products. In order to ensure the purity of the target product obtained in chemical production, it is necessary to control the reaction temperature inside the chemical equipment during the chemical processing.

[0003] With societal progress and the development of the chemical industry, many reactive raw materials that can react with various metals and non-metals have found widespread application in chemical production, such as concentrated sulfuric acid. These chemical reactive raw materials are highly corrosive. When sensors measure their temperature, this corrosiveness can damage internal components, affecting the sensor's sensitivity and lifespan, thus impacting detection results and leading to lower purity in chemical production. Furthermore, when detecting the temperature of deep liquids, the sensor must first pass through the upper layer of liquid. The temperature of the upper layer can interfere with the detection of the deep liquid temperature, making it impossible to accurately obtain the temperature of the deep chemical processing liquid. Summary of the Invention

[0004] The technical problem of this invention is to provide a corrosion-resistant sensor for use in the research and development of chemical products, so as to facilitate direct detection of deep liquid temperature, avoid interference from the upper liquid, prevent the detection liquid from directly contacting the sensor, increase the corrosion resistance of the sensor, and prevent liquid corrosion of parts from affecting the sensitivity of the sensor.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a corrosion-resistant sensor for chemical product research and development, comprising a protective shell and a sensor body, wherein the protective shell is sleeved over the sensor body, a detection cavity is fixedly installed at the lower end of the sensor body, a limiting seat is fixedly installed at the lower end of the detection cavity, an inlet tube is fixedly installed inside the limiting seat, an upper connecting tube is fixedly installed at the lower end of the inlet tube, a lower connecting tube is rotatably installed at the lower end of the upper connecting tube, and the lower end of the lower connecting tube passes through the lower end of the protective shell and extends to the protective shell. An external sampling tube is fixedly installed, and a sampling element is fixedly installed at the lower end of the sampling tube. A connecting rod is slidably installed inside the sampling element. A connecting plate is fixedly installed at one end of the connecting rod of the sampling element. A movable plug is fixedly installed on the connecting plate. The movable plug fits with the lower end of the sampling tube. A suction device is provided inside the upper connecting tube. The suction device can quickly introduce liquid into the detection chamber after the movable plug is separated from the sampling tube. A fixed rod is provided inside the detection chamber. A fixed seat is fixedly installed at the lower end of the fixed rod. A temperature sensing element is fixedly installed at the lower end of the fixed seat.

[0006] As a further embodiment of the present invention, the suction device includes a driving rod and a driven rod. The driving rod is rotatably mounted on one side of the upper connecting pipe, with one end of the driving rod inside the upper connecting pipe. A driving bevel gear is fixedly mounted on the end of the driving rod away from the upper connecting pipe. The driven rod is rotatably mounted on the bottom of the protective housing, with a driven bevel gear fixedly mounted on the upper end of the driven rod. The driving bevel gear meshes with the driven bevel gear.

[0007] As a further embodiment of the present invention, a drive gear is fixedly installed at the lower end of the driven rod, a positioning gear ring is rotatably installed at the bottom of the protective housing corresponding to the outer side of the lower connecting pipe, the positioning gear ring has inner teeth on the side near the lower connecting pipe, the upper end of the connecting rod passes through the bottom of the protective housing and extends into the protective housing and is fixedly installed with an upper threaded rod, a threaded component is rotatably installed in the protective housing corresponding to the position of the upper threaded rod, the threaded component is threadedly connected to the upper threaded rod, an inner gear is fixedly installed on the threaded component, the inner gear meshes with the inner teeth, and the positioning gear ring meshes with the drive gear.

[0008] As a further embodiment of the present invention, the upper end of the inlet tube extends into the detection cavity and is fixedly installed with a connecting bucket. Multiple detection tubes are fixedly installed on the connecting bucket. An upper mounting plate is fixedly installed on the upper end of the detection tube. An upper flushing tube is fixedly installed on the upper surface of the upper mounting plate corresponding to the position of the detection tube. A through groove is provided on the upper mounting plate corresponding to the positions of the upper flushing tube and the detection tube. The through groove connects the upper flushing tube and the detection tube.

[0009] As a further embodiment of the present invention, an installation shaft is rotatably mounted on one side of the upper mounting plate corresponding to the through groove, a rotating seat is fixedly mounted on the installation shaft, a movable baffle is fixedly mounted on one side of the rotating seat, an internal gear is fixedly mounted on the installation shaft, an internal gear ring is rotatably mounted in the upper mounting plate, the outer teeth of the internal gear ring mesh with the internal gear, and a drive gear is rotatably mounted in the upper mounting plate, the drive gear meshing with the inner teeth of the internal gear ring.

[0010] As a further embodiment of the present invention, the detection tubes are provided in multiple sets and all surround the outside of the temperature sensing element. An insulation layer is fixedly installed inside the detection cavity. The insulation layer is a circular vertical plate that surrounds the detection tubes and the temperature sensing element inside.

[0011] As a further embodiment of the present invention, a water inlet is fixedly installed at the upper end of the upper flushing pipe, a water inlet pipe is fixedly installed on one side of the upper surface of the water inlet, a storage component is fixedly installed at the end of the water inlet pipe away from the water inlet, and the storage component is fixedly installed at the upper end of the detection chamber.

[0012] As a further embodiment of the present invention, the detection tube is made of heat-insulating transparent glass, the upper end of the storage device can be connected to a water pipe, and the connecting rod and the sampling tube are both made of siliconized glass.

[0013] The beneficial effects of this invention are:

[0014] In this invention, when detecting the temperature of deep liquids inside chemical tanks, the sampling element can be introduced into the deep liquid area, and then the movable plug at the bottom of the sampling tube can be opened. This prevents the upper layer of liquid from entering the sampling tube before the sensor reaches the deep liquid layer, thus preventing the upper layer of liquid from mixing into the deep liquid detection chamber. During the introduction process, the protective shell wraps around the outside of the sensor body, preventing external liquid from interfering with the sensor. This avoids the upper layer of liquid temperature interfering with the temperature sensor's detection of the deep liquid temperature, ensuring the accuracy of deep liquid temperature detection. The protective shell also isolates the sensor surface from direct corrosion by the chemical liquid, preventing corrosion of the sensor surface, increasing the stability of the internal detection components of the sensor, and extending the sensor's service life.

[0015] In this invention, the liquid to be tested diffuses into the detection tube through a connecting bucket, thereby filling the detection tube surrounding the temperature sensing element with a chemical liquid of a corresponding depth. The liquid temperature is output through the detection tube, and the temperature sensing element detects the surrounding temperature to obtain the temperature of the chemical liquid at the corresponding depth. This allows the temperature sensing element to perform temperature detection through the detection tube, preventing direct contact between the chemical liquid and the temperature sensing element during the detection process, thus avoiding corrosion. Only the outer surface of the protective shell and the sampling tube directly contact the chemical liquid during the detection process, preventing external corrosion of the sensor. While ensuring close contact between the detected liquid and the temperature sensing element, the internal sensing components of the sensor are also kept away from direct liquid contact, reducing the probability of corrosion damage to internal components and increasing the sensor's service life. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of the present invention from a low-angle view.

[0019] Figure 3 For the present invention Figure 2 Partial structural diagram at point A in the middle

[0020] Figure 4 This is a cross-sectional view of the structure of the present invention;

[0021] Figure 5 For the present invention Figure 4 A partial structural diagram at point B in the middle;

[0022] Figure 6 This is a schematic diagram of the internal structure of the present invention;

[0023] Figure 7 For the present invention Figure 6 A partial structural diagram at point C;

[0024] Figure 8 Cross-sectional view of the internal structure of the present invention Figure 1 ;

[0025] Figure 9 For the present invention Figure 8 A partial structural diagram at point D;

[0026] Figure 10 Cross-sectional view of the internal structure of the present invention Figure 2 ;

[0027] Figure 11 For the present invention Figure 10 A partial schematic diagram of the structure at point E in the middle.

[0028] The attached diagram lists the components represented by each number as follows:

[0029] 1. Protective housing; 2. Sampling tube; 3. Connecting rod; 4. Sampling component; 5. Connecting plate; 6. Movable plug; 7. Sensor body; 8. Detection chamber; 9. Driving gear; 10. Driving bevel gear; 11. Driven bevel gear; 12. Driven rod; 13. Upper connecting tube; 14. Positioning gear ring; 15. Inner teeth; 16. Upper threaded rod; 17. Threaded component; 18. Inner gear; 19. Lower connecting tube; 20. 21. Limiting seat; 22. Driving rod; 23. Insulation layer; 24. Storage component; 25. Connecting hopper; 26. Inlet pipe; 27. Detection pipe; 28. Fixing seat; 29. ​​Fixing rod; 30. Temperature sensing component; 31. Water inlet component; 32. Water inlet pipe; 33. Upper flushing pipe; 34. Movable baffle; 35. Internal gear ring; 36. Mounting shaft; 37. Rotating seat; 38. Drive gear; 39. Upper mounting plate. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Please see Figures 1-11This invention provides a technical solution: a corrosion-resistant sensor for chemical product research and development, comprising a protective shell 1 and a sensor body 7. The protective shell 1 is sleeved outside the sensor body 7. A detection cavity 8 is fixedly installed at the lower end of the sensor body 7. A limiting seat 20 is fixedly installed at the lower end of the detection cavity 8. An inlet tube 25 is fixedly installed inside the limiting seat 20. An upper connecting tube 13 is fixedly installed at the lower end of the inlet tube 25. A lower connecting tube 19 is rotatably installed at the lower end of the upper connecting tube 13. The lower end of the lower connecting tube 19 passes through the lower end of the protective shell 1 and extends outside the protective shell 1. A sampling tube 2 is fixedly installed, and a sampling element 4 is fixedly installed at the lower end of the sampling tube 2. A connecting rod 3 is slidably installed inside the sampling element 4. A connecting plate 5 is fixedly installed at one end of the connecting rod 3 and the sampling element 4. A movable plug 6 is fixedly installed on the connecting plate 5. The movable plug 6 fits with the lower end of the sampling tube 2. A suction device is provided in the upper connecting tube 13. The suction device can quickly introduce liquid into the detection chamber 8 after the movable plug 6 is separated from the sampling tube 2. A fixed rod 28 is provided in the detection chamber 8. A fixed seat 27 is fixedly installed at the lower end of the fixed rod 28. A temperature sensing element 29 is fixedly installed at the lower end of the fixed seat 27.

[0032] When performing temperature detection of chemical liquids, the sampling element 4 is inserted into the designated detection position. The liquid is then fed through the sampling tube 2 into the inlet tube 25 via the sampling element 4, and then into the detection chamber 8 via the inlet tube 25. The temperature sensing element 29 in the detection chamber 8 detects the liquid temperature to obtain temperature data. For deep liquid temperature detection in chemical tanks, the sampling element 4 can be inserted into the deep liquid area, and then the movable plug 6 at the bottom of the sampling tube 2 is opened. (After the sampling element 4 reaches the designated position, the suction device is turned on, driving the drive rod 21 to rotate. The drive rod 21 rotates, driving the drive bevel gear 10. The drive bevel gear 10 rotates, driving the driven bevel gear 11 to rotate. The driven bevel gear 11 rotates, driving the driven rod 12 to rotate. The driven rod 12 rotates, driving the drive gear 9 to rotate. The drive gear 9 rotates, driving the positioning gear ring 14 to rotate. The positioning gear ring 14 rotates, driving the inner gear 18 to rotate through the inner teeth 15. The inner gear 18 rotates, driving the threaded part 17 to rotate. The threaded part 17 rotates and engages with the upper threaded rod...) The interaction of the upper threaded rod 16 drives the upper threaded rod 16 to move downwards. The downward movement of the upper threaded rod 16 drives the connecting rod 3 to move downwards. The downward movement of the connecting rod 3 drives the movable plug 6 to move downwards through the connecting plate 5, thereby causing the movable plug 6 to detach from the lower end of the sampling tube 2. Only after detaching from the liquid can the plug 6 enter the sampling tube 2, thus preventing the liquid from entering the sampling tube 2 before it reaches the designated detection position, which would interfere with the sampling purity and thus the accuracy of the temperature detection data. This also prevents the upper liquid from entering the sampling tube 2 before the sensor reaches the deep liquid layer, and prevents the upper liquid from mixing with the deep liquid in the detection chamber 8. During the introduction of the device, the protective shell 1 wraps around the outside of the sensor body 7, preventing the liquid outside the detection chamber 8 from interfering with the sensor. This prevents the upper liquid temperature from interfering with the temperature sensor's detection of the deep liquid temperature, ensuring the accuracy of the deep liquid temperature detection. The protective shell 1 also isolates the sensor surface from direct corrosion by chemical liquids, preventing the sensor surface from being corroded, increasing the stability of the internal detection components of the sensor, and increasing the service life of the sensor.

[0033] In this invention, when detecting the temperature of deep liquid inside a chemical tank, the sampling element 4 can be introduced into the deep liquid, and then the movable plug 6 at the bottom of the sampling tube 2 can be opened. This prevents the upper layer of liquid from entering the sampling tube 2 before the sensor reaches the deep liquid, thus preventing the upper layer of liquid from mixing into the deep liquid and entering the detection chamber 8. During the introduction process, the protective shell 1 wraps around the outside of the sensor body 7, preventing the liquid outside the detection chamber 8 from interfering with the sensor. This avoids the upper layer of liquid temperature interfering with the temperature sensor's detection of the deep liquid temperature, ensuring the accuracy of the deep liquid temperature detection. The protective shell 1 also isolates the sensor surface from direct corrosion by the chemical liquid, preventing corrosion of the sensor surface, increasing the stability of the internal detection components of the sensor, and increasing the service life of the sensor.

[0034] As a further design of the present invention, the suction device includes a driving rod 21 and a driven rod 12. The driving rod 21 is rotatably mounted on one side of the upper connecting pipe 13, with one end of the driving rod 21 inside the upper connecting pipe 13. A driving bevel gear 10 is fixedly mounted on the end of the driving rod 21 away from the upper connecting pipe 13. The driven rod 12 is rotatably mounted on the bottom of the protective housing 1, with a driven bevel gear 11 fixedly mounted on the upper end of the driven rod 12. The driving bevel gear 10 meshes with the driven bevel gear 11.

[0035] As a further design of the present invention, a drive gear 9 is fixedly installed at the lower end of the driven rod 12, and a positioning gear ring 14 is rotatably installed at the bottom of the protective housing 1 corresponding to the outer side of the lower connecting pipe 19. The positioning gear ring 14 is provided with inner teeth 15 on the side near the lower connecting pipe 19. The upper end of the connecting rod 3 passes through the bottom of the protective housing 1 and extends into the protective housing 1, and is fixedly installed with an upper threaded rod 16. A threaded component 17 is rotatably installed inside the protective housing 1 at the position corresponding to the upper threaded rod 16. The threaded component 17 is threadedly connected to the upper threaded rod 16. An inner gear 18 is fixedly installed on the threaded component 17. The inner gear 18 meshes with the inner teeth 15. The positioning gear ring 14 meshes with the drive gear 9.

[0036] After the sampling piece 4 reaches the designated position, the suction device is turned on, driving the active rod 21 to rotate. The rotation of the active rod 21 drives the active bevel gear 10, which in turn drives the driven bevel gear 11 to rotate. The driven bevel gear 11 drives the driven rod 12 to rotate, which in turn drives the active gear 9 to rotate. The active gear 9 drives the positioning gear ring 14 to rotate, which in turn drives the inner gear 18 to rotate via the inner teeth 15. The inner gear 18 drives the threaded part 17 to rotate, and the rotation of the threaded part 17 interacts with the upper threaded rod 16, thereby driving the upper threaded rod 16 to move downward. The downward movement of the upper threaded rod 16 drives the connecting rod 3 to move downward, and the downward movement of the connecting rod 3 drives the movable plug 6 to move downward via the connecting plate 5. This causes the movable plug 6 to detach from the lower end of the sampling tube 2. Only when the liquid detaches from the sampling tube 2 can it enter the sampling tube 2, thus preventing the liquid from entering the sampling tube 2 before it reaches the designated detection position, which would interfere with the sampling purity and thus the accuracy of the temperature detection data.

[0037] As a further design of the present invention, the upper end of the inlet tube 25 extends into the detection chamber 8 and is fixedly installed with a connecting bucket 24. Multiple detection tubes 26 are fixedly installed on the connecting bucket 24. An upper mounting plate 39 is fixedly installed on the upper end of the detection tube 26. An upper flushing tube 32 is fixedly installed on the upper surface of the upper mounting plate 39 corresponding to the position of the detection tube 26. A through groove is provided on the upper mounting plate 39 corresponding to the positions of the upper flushing tube 32 and the detection tube 26. The through groove connects the upper flushing tube 32 and the detection tube 26.

[0038] When the sampled liquid enters the lower connecting tube 19 through the sampling tube 2, then the upper connecting tube 13, then the inlet tube 25, then the connecting hopper 24, and finally diffuses into the detection tube 26 through the connecting hopper 24, the detection tube 26 surrounding the temperature sensing element 29 is filled with chemical liquid of the corresponding depth. The liquid temperature is output through the detection tube 26, and the temperature sensing element 29 detects the surrounding temperature to obtain the temperature of the chemical liquid at the corresponding depth. This allows the temperature sensing element 29 to perform temperature detection through the detection tube 26, preventing the chemical liquid from coming into contact with the temperature sensing element 29 and thus avoiding corrosion. During the detection process, only the outer surface of the protective shell 1 and the sampling tube 2 comes into direct contact with the chemical liquid, preventing external corrosion of the sensor. While ensuring close contact between the detection liquid and the temperature sensing element 29, the internal sensing components of the sensor are also kept away from direct liquid contact, reducing the probability of corrosion damage to the internal components and increasing the sensor's service life.

[0039] In this invention, the liquid to be tested diffuses into the detection tube 26 through the connecting bucket 24, thereby filling the detection tube 26 surrounding the temperature sensing element 29 with a corresponding depth of chemical liquid. The liquid temperature is output through the detection tube 26, and the temperature sensing element 29 detects the surrounding temperature to obtain the temperature of the chemical liquid at the corresponding depth. This allows the temperature sensing element 29 to perform temperature detection through the detection tube 26, preventing the chemical liquid from coming into contact with the temperature sensing element 29 during the detection process, thus avoiding corrosion of the temperature sensing element 29. During the detection process, only the outer surfaces of the protective shell 1 and the sampling tube 2 are in direct contact with the chemical liquid, preventing corrosion of the sensor exterior. While ensuring close contact between the detected liquid and the temperature sensing element 29, the internal sensing components of the sensor are also not in direct contact with the liquid, reducing the probability of corrosion damage to the internal components of the sensor and increasing the service life of the sensor.

[0040] As a further design of the present invention, an installation shaft 35 is rotatably mounted on one side of the through groove inside the upper mounting plate 39. A rotating seat 37 is fixedly mounted on the installation shaft 35. A movable baffle 33 is fixedly mounted on one side of the rotating seat 37. An internal gear 36 is fixedly mounted on the installation shaft 35. An internal gear ring 34 is rotatably mounted inside the upper mounting plate 39. The outer teeth of the internal gear ring 34 mesh with the internal gear 36. A drive gear 38 is rotatably mounted inside the upper mounting plate 39. The drive gear 38 meshes with the inner teeth of the internal gear ring 34.

[0041] After temperature detection is completed, the liquid in the detection tube 26 is drained, and the drive gear 38 is turned on. The drive gear 38 rotates, which drives the internal gear ring 34 that meshes with it to rotate. The rotation of the internal gear ring 34 drives the internal gear 36 to rotate. The rotation of the internal gear 36 drives the mounting shaft 35 to rotate. The rotation of the mounting shaft 35 drives the rotating seat 37 to rotate. The rotation of the rotating seat 37 drives the movable baffle 33 to rotate into the upward mounting plate 39, thereby causing the movable baffle 33 to rotate away from the upper end of the detection tube 26, so that the detection tube 26 and the upper flushing pipe 32 are connected. External cleaning water enters from the storage component 23 into the water inlet pipe 31, and then enters the water inlet component 30 through the water inlet pipe 31. Then, it flows from the upper flushing pipe 32 to the detection tube 26 through the channel to flush the inside of the detection tube 26 to the sampling tube 2, removing the detection liquid adhering to the inner wall of the detection tube 26 to the sampling tube 2.

[0042] As a further design of the present invention, multiple sets of detection tubes 26 are provided, all of which surround the outside of the temperature sensing element 29. A heat insulation layer 22 is fixedly installed inside the detection cavity 8. The heat insulation layer 22 is a circular vertical plate that surrounds the detection tubes 26 and the temperature sensing element 29 inside.

[0043] As a further design of the present invention, a water inlet 30 is fixedly installed at the upper end of the upper flushing pipe 32, a water inlet pipe 31 is fixedly installed on one side of the upper surface of the water inlet pipe 30, and a storage component 23 is fixedly installed at the end of the water inlet pipe 31 away from the water inlet pipe 30. The storage component 23 is fixedly installed at the upper end of the detection chamber 8.

[0044] As a further design of the present invention, the detection tube 26 is made of heat-insulating transparent glass, the upper end of the storage component 23 can be connected to a water pipe, and the connecting rod 3 and the sampling tube 2 are both made of siliconized glass.

[0045] The embodiments of the present invention described above are merely examples, and those skilled in the art can make various modifications or derive other equivalent embodiments. Therefore, the present invention is not limited to the embodiments mentioned in the above detailed description. Thus, the true scope of protection of the present invention should be determined according to the technical concept of the appended claims. Furthermore, it should be understood that the present invention includes all variations, equivalents, and alternatives to the concept of the present invention as defined by the appended claims.

Claims

1. A corrosion-resistant sensor for use in the research and development of chemical products, comprising a protective housing (1) and a sensor body (7), characterized in that: The protective shell (1) is fitted over the sensor body (7). A detection cavity (8) is fixedly installed at the lower end of the sensor body (7). A limiting seat (20) is fixedly installed at the lower end of the detection cavity (8). An inlet tube (25) is fixedly installed inside the limiting seat (20). An upper connecting tube (13) is fixedly installed at the lower end of the inlet tube (25). A lower connecting tube (19) is rotatably installed at the lower end of the upper connecting tube (13). The lower end of the lower connecting tube (19) passes through the lower end of the protective shell (1) and extends to the outside of the protective shell (1) and is fixedly installed with a sampling tube (2). A sampling element (4) is fixedly installed at the lower end of the sampling tube (2). A connecting rod (3) is slidably installed inside the sampling component (4). A connecting plate (5) is fixedly installed at one end of the connecting rod (3) of the sampling component (4). A movable plug (6) is fixedly installed on the connecting plate (5). The movable plug (6) fits into the lower end of the sampling tube (2). A suction device is provided inside the upper connecting tube (13). The suction device can quickly introduce liquid into the detection chamber (8) after the movable plug (6) is removed from the sampling tube (2). A fixed rod (28) is provided inside the detection chamber (8). A fixed seat (27) is fixedly installed at the lower end of the fixed rod (28). A temperature sensing element (29) is fixedly installed at the lower end of the fixed seat (27).

2. A corrosion-resistant sensor for chemical product development according to claim 1, characterized in that: The suction device includes an active rod (21) and a driven rod (12). The active rod (21) is rotatably mounted on one side of the upper connecting pipe (13). One end of the active rod (21) is inside the upper connecting pipe (13). An active bevel gear (10) is fixedly mounted on the end of the active rod (21) away from the upper connecting pipe (13). The driven rod (12) is rotatably mounted on the bottom of the protective shell (1). A driven bevel gear (11) is fixedly mounted on the upper end of the driven rod (12). The active bevel gear (10) meshes with the driven bevel gear (11).

3. A corrosion-resistant sensor for chemical product development according to claim 2, characterized in that: The lower end of the driven rod (12) is fixedly installed with a drive gear (9). The bottom of the protective shell (1) is rotatably installed with a positioning gear ring (14) corresponding to the outer side of the lower connecting pipe (19). The positioning gear ring (14) is provided with inner teeth (15) on the side close to the lower connecting pipe (19). The upper end of the connecting rod (3) passes through the bottom of the protective shell (1) and extends into the protective shell (1) and is fixedly installed with an upper threaded rod (16). The protective shell (1) is rotatably installed with a threaded part (17) corresponding to the position of the upper threaded rod (16). The threaded part (17) is threadedly connected to the upper threaded rod (16). The threaded part (17) is fixedly installed with an inner gear (18). The inner gear (18) meshes with the inner teeth (15). The positioning gear ring (14) meshes with the drive gear (9).

4. A corrosion-resistant sensor for chemical product development according to claim 3, characterized in that: The upper end of the inlet tube (25) extends into the detection chamber (8) and is fixedly installed with a connecting bucket (24). Multiple detection tubes (26) are fixedly installed on the connecting bucket (24). An upper mounting plate (39) is fixedly installed on the upper end of the detection tube (26). An upper flushing tube (32) is fixedly installed on the upper surface of the upper mounting plate (39) corresponding to the position of the detection tube (26). A through groove is provided on the upper mounting plate (39) corresponding to the position of the upper flushing tube (32) and the detection tube (26). The through groove connects the upper flushing tube (32) and the detection tube (26).

5. A corrosion-resistant sensor for chemical product development according to claim 4, characterized in that: An mounting shaft (35) is rotatably mounted on one side of the through groove in the upper mounting plate (39). A rotating seat (37) is fixedly mounted on the mounting shaft (35). A movable baffle (33) is fixedly mounted on one side of the rotating seat (37). An internal gear (36) is fixedly mounted on the mounting shaft (35). An internal gear ring (34) is rotatably mounted in the upper mounting plate (39). The outer teeth of the internal gear ring (34) mesh with the internal gear (36). A drive gear (38) is rotatably mounted in the upper mounting plate (39). The drive gear (38) meshes with the inner teeth of the internal gear ring (34).

6. A corrosion-resistant sensor for chemical product development according to claim 5, characterized in that: The detection tube (26) is provided in multiple sets and all surround the outside of the temperature sensing element (29). A heat insulation layer (22) is fixedly installed inside the detection cavity (8). The heat insulation layer (22) is a circular vertical plate and surrounds the detection tube (26) and the temperature sensing element (29) inside.

7. A corrosion-resistant sensor for chemical product development according to claim 6, characterized in that: A water inlet (30) is fixedly installed at the upper end of the upper flushing pipe (32), and a water inlet pipe (31) is fixedly installed on one side of the upper surface of the water inlet (30). A storage device (23) is fixedly installed at the end of the water inlet pipe (31) away from the water inlet (30), and the storage device (23) is fixedly installed at the upper end of the detection chamber (8).

8. A corrosion-resistant sensor for chemical product development according to claim 7, characterized in that: The detection tube (26) is made of heat-insulating transparent glass, and the upper end of the storage component (23) can be connected to a water pipe. The connecting rod (3) and the sampling tube (2) are both made of siliconized glass.

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