Online sampling device of reaction kettle

Abstract

The utility model relates to an online sampling device for a reaction kettle, which comprises a sampling outer sleeve and is technically characterized in that the lower end of the sampling outer sleeve is closed and fixed on the bottom surface of the reaction kettle, the upper end of the sampling outer sleeve is led out of the top surface of the reaction kettle and is provided with a support flange, and a lifting cylinder is fixed between the support flange and the top surface of the reaction kettle; a sampling inner sleeve is arranged in the sampling outer sleeve, the lower end of the sampling inner sleeve is closed and connected with the bottom face of the sampling outer sleeve, the sampling outer sleeve is led out of the upper end of the sampling inner sleeve and bent into a horizontal section, a lifting pump is fixed to the tail end of the horizontal section through a flange plate, and an inlet pipeline of the lifting pump is inserted into the sampling inner sleeve and extends to the bottom face of the sampling inner sleeve. A plurality of outer sampling holes are formed in the sampling outer sleeve at intervals in the height direction of the sampling outer sleeve, inner sampling holes staggered with the outer sampling holes are formed in the sampling inner sleeve, the outer side of the horizontal section is sleeved with a clamping ring, and the upper end of a cylinder rod of the lifting cylinder is fixedly connected with the clamping ring. According to the device, the sampling representativeness is obviously improved, and meanwhile, the bottom unloading of the reaction kettle is not influenced.

Description

Technical Field

[0001] This utility model relates to the field of sampling device technology, specifically to an online sampling device for a reaction vessel. Background Technology

[0002] Reactors are widely used in the chemical, pharmaceutical, and food industries. They can be used to synthesize chemicals, manufacture drugs, and produce food. Online sampling of reactors can effectively obtain samples for analysis during the reaction process, and is highly timely.

[0003] For example, CN 219657233 U discloses an online sampling device for a chemical production reactor, which includes a hopper, a rubber pipe fixedly connected to the bottom wall of the hopper, a rubber pad fixedly connected to the bottom wall of the rubber pipe, a sliding plate slidably connected to the bottom wall of the rubber pad, a feeding trough inside the sliding plate, a sampling tube on the bottom wall of the sliding plate, a platform fixedly connected to the bottom wall of the sampling tube, and a fixing plate on both the front and rear sides of the sliding plate. The fixing plate has a sliding groove inside, and a limiting groove inside the limiting groove has a handle fixedly connected to the outer wall of the sliding plate. This sampling device controls the sliding plate's movement via the handle, achieving quantitative sampling and ensuring normal online sampling operation. However, the following problems still exist: the sampling location is limited, and the sample representativeness is poor. Utility Model Content

[0004] The purpose of this invention is to provide a reasonably structured and reliable online sampling device for reactors that solves the above problems, significantly improves the representativeness of the samples, and does not affect the unloading of materials from the bottom of the reactor.

[0005] The technical solution of this utility model is:

[0006] An online sampling device for a reactor includes a sampling outer sleeve for support inside the reactor. The key technical features are: the lower end of the sampling outer sleeve is closed and fixed to the bottom surface of the reactor; the upper end of the sampling outer sleeve extends out from the top surface of the reactor and is provided with a supporting flange; a lifting cylinder is fixed between the supporting flange and the top surface of the reactor; a sampling inner sleeve is provided inside the sampling outer sleeve; the lower end of the sampling inner sleeve is closed and connected to the bottom surface of the sampling outer sleeve; the upper end of the sampling inner sleeve extends out from the sampling outer sleeve and is bent into a horizontal section; a lifting pump is fixed to the end of the horizontal section using a flange; the inlet pipe of the lifting pump is inserted into the sampling inner sleeve and extends to the bottom surface of the sampling inner sleeve; the sampling outer sleeve has multiple external sampling holes spaced apart along its height direction; the sampling inner sleeve has internal sampling holes arranged alternately with the external sampling holes; a clamping ring is fitted on the outer side of the horizontal section; and the upper end of the cylinder rod of the lifting cylinder is connected and fixed to the clamping ring.

[0007] In the above-mentioned online sampling device for the reactor, the outlet pipe of the booster pump extends downward, and a limiting plate corresponding to the outlet pipe is provided on the side wall of the reactor, and the limiting plate is provided with a limiting through hole corresponding to the outlet pipe.

[0008] In the above-mentioned online sampling device for the reactor, a set of spacer ribs is provided between the inlet pipe of the booster pump and the inner wall of the sampling sleeve.

[0009] In the above-mentioned online sampling device for the reactor, the number of internal sampling holes and external sampling holes are equal, and the hole diameters are equal.

[0010] In the above-mentioned online sampling device for the reactor, the lower end of the inlet pipe of the booster pump is slanted to ensure that the sampling liquid enters.

[0011] The beneficial effects of this utility model are:

[0012] When sampling is required, a lifting cylinder raises the sampling inner sleeve, aligning the inner sampling hole of the inner sleeve with the outer sampling hole of the outer sleeve. This allows the solution in the reactor to enter the sampling inner sleeve through the inner and outer sampling holes. After sampling, the lifting cylinder resets the sampling inner sleeve, returning the inner and outer sampling holes to their staggered state and sealing the inner sleeve. Then, a booster pump is activated, and the sampled liquid in the sampling inner sleeve is output to the outside of the reactor via the inlet pipe. The output sampled liquid is a mixture of liquids from various output points along the reactor's height, significantly improving sample representativeness. Furthermore, the sampling structure in this application is not located at the bottom of the reactor, thus not affecting the bottom unloading of the reactor. Attached Figure Description

[0013] Figure 1 This is a diagram showing the usage state of this utility model;

[0014] Figure 2 yes Figure 1 Enlarged view of section A in the middle;

[0015] Figure 3 yes Figure 1 Enlarged view of section B in the middle.

[0016] In the diagram: 1. Outlet pipe, 2. Limiting plate, 3. Reactor, 4. Sampling outer sleeve, 5. Inlet pipe, 6. Booster pump, 7. Horizontal section, 8. Clamping ring, 9. Support flange, 10. Lifting cylinder, 11. Sampling inner sleeve, 12. Spacing rib assembly, 13. Flange, 14. External sampling hole, 15. Internal sampling hole. Detailed Implementation

[0017] The present invention will be described in detail with reference to the accompanying drawings.

[0018] like Figures 1-3As shown, the online sampling device for the reactor includes a sampling outer tube 4 for support inside the reactor 3.

[0019] The sampling outer tube 4 is closed at its lower end and fixed to the bottom surface of the reactor 3, while the upper end of the sampling outer tube 4 extends out of the top surface of the reactor 3 and is equipped with a supporting flange 9. A lifting cylinder 10 is fixed between the supporting flange 9 and the top surface of the reactor 3.

[0020] The sampling outer tube 4 has a sampling inner tube 11 inside. The lower end of the sampling inner tube 11 is closed and connected to the bottom surface of the sampling outer tube 4. The upper end of the sampling inner tube 11 extends out of the sampling outer tube 4 and is bent into a horizontal section 7. The end of the horizontal section 7 is fixed with a lifting pump 6 using a flange 13. The inlet pipe 5 of the lifting pump 6 is inserted into the sampling inner tube 11 and extends to the bottom surface of the sampling inner tube 11. A clamping ring 8 is fitted on the outer side of the horizontal section 7, and the upper end of the cylinder rod of the lifting cylinder 10 is connected and fixed to the clamping ring 8.

[0021] The sampling outer sleeve 4 is provided with a plurality of outer sampling holes 14 spaced apart along its height direction, and the sampling inner sleeve 11 is provided with inner sampling holes 15 arranged alternately with the outer sampling holes 14. The number of inner sampling holes 15 and outer sampling holes 14 are equal, and the hole diameters are equal.

[0022] In this embodiment, the outlet pipe 1 of the booster pump 6 extends downward, and a limiting plate 2 corresponding to the outlet pipe 1 is provided on the side wall of the reaction vessel 3. The limiting plate 2 is provided with a limiting through hole corresponding to the outlet pipe 1. A spacer rib group 12 is provided between the inlet pipe 5 of the booster pump 6 and the inner wall of the sampling inner sleeve 11. The lower end of the inlet pipe 5 of the booster pump 6 is oblique to ensure that the sampling liquid enters smoothly.

[0023] Working principle:

[0024] When the reactor 3 is operating normally, the cylinder rod of the lifting cylinder 10 is at the bottom dead center, and the inner and outer sampling holes are staggered, sealing the sampling inner sleeve 11. When sampling is required, the lifting cylinder 10 drives the sampling inner sleeve 11 to rise, so that the inner sampling hole 15 of the sampling inner sleeve 11 coincides with the outer sampling hole 14 of the sampling outer sleeve 4, thereby allowing the solution in the reactor 3 to enter the sampling inner sleeve 11 through the inner and outer sampling holes. After sampling is completed, the lifting cylinder 10 drives the sampling inner sleeve 11 to reset, so that the inner and outer sampling holes return to the staggered state, sealing the sampling inner sleeve 11. Afterwards, the booster pump 6 is started, and the sampled liquid in the sampling inner sleeve 11 is output to the outside of the reactor 3 through the inlet pipe 5.

[0025] The embodiments of this utility model have been described in detail above, but the content described is only a preferred embodiment of this utility model and should not be considered as limiting the scope of implementation of this utility model. All equivalent changes and improvements made within the scope of this utility model should still fall within the scope of this patent.

Claims

1. An online sampling device for a reaction vessel, comprising a sampling outer sleeve for support inside the reaction vessel, characterized in that: The lower end of the sampling outer tube is closed and fixed to the bottom surface of the reactor. The upper end of the sampling outer tube extends out of the top surface of the reactor and is provided with a supporting flange. A lifting cylinder is fixed between the supporting flange and the top surface of the reactor. The sampling inner sleeve is provided inside the sampling outer tube. The lower end of the sampling inner sleeve is closed and connected to the bottom surface of the sampling outer tube. The upper end of the sampling inner sleeve extends out of the sampling outer tube and is bent into a horizontal section. A lifting pump is fixed at the end of the horizontal section using a flange. The inlet pipe of the lifting pump is inserted into the sampling inner sleeve and extends to the bottom surface of the sampling inner sleeve. The sampling outer tube is provided with multiple external sampling holes at intervals along its height direction. The sampling inner sleeve is provided with internal sampling holes arranged alternately with the external sampling holes. A clamping ring is fitted on the outer side of the horizontal section. The upper end of the cylinder rod of the lifting cylinder is connected and fixed to the clamping ring.

2. The online sampling device for the reactor according to claim 1, characterized in that: The outlet pipe of the booster pump extends downward, and the side wall of the reactor is provided with a limiting plate corresponding to the outlet pipe, and the limiting plate is provided with a limiting through hole corresponding to the outlet pipe.

3. The online sampling device for the reactor according to claim 1, characterized in that: The inlet pipe of the booster pump is provided with a set of spaced ribs between it and the inner wall of the sampling sleeve.

4. The online sampling device for the reactor according to claim 1, characterized in that: The number of internal and external sampling holes is equal, and the hole diameters are equal.

5. The online sampling device for the reactor according to claim 1, characterized in that: The lower end of the inlet pipe of the booster pump is slanted.

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