Automatic opening and closing type reaction kettle sampling device

Abstract

The automatic opening and closing type reaction kettle sampling device mainly comprises the negative pressure bin and the sampling pipe, articles in a reaction kettle are pressed into the negative pressure bin through negative pressure, then the articles sequentially pass through the first transition bin and the second transition bin, and finally the articles are taken out through the sampler. In addition, articles pressed into the negative pressure bin are located in the sampling device without being sampled by the sampler and are not in contact with other substances, compared with the prior art, the reaction process completion is not affected, operation is simpler and more convenient, efficiency is improved, the second transition bin and the sampler are connected in a sealed mode through the first flange, and the sampling efficiency is improved. The poisonous gas is prevented from entering the environment from the sampling device in the sampling process, so that sampling personnel are protected.

Description

Technical Field

[0001] The utility model relates to the technical field of reactor sampling, in particular to an automatic opening and closing type reactor sampling device. Background Art

[0002] The reactor is a comprehensive reaction vessel. The design of the reactor structure, function and accessories is based on the reaction conditions. From the initial feeding, reaction and discharging, the pre-set reaction steps can be completed with a high degree of automation. The temperature, pressure, mechanical control, reactant concentration and other important parameters in the reaction process are strictly regulated. Its structure is generally composed of a kettle body, a transmission device, a stirring device, a heating device, a cooling device, a sealing device, and corresponding auxiliary equipment: a fractionating column, a condenser, a water separator, a collection tank, a filter, etc. Reactors are widely used in petroleum, chemical industry, rubber, pesticides, dyes, medicine, and food. They are pressure vessels used to complete processes such as vulcanization, nitration, hydrogenation, hydrocarbonization, polymerization, and condensation. The broad understanding of a reactor is a stainless steel vessel with physical or chemical reactions. Containers must be structurally designed and parameterized according to different process conditions. Design conditions, processes, inspection, manufacturing, and acceptance must be based on relevant technical standards to achieve the heating, evaporation, cooling, and low-speed mixing reaction functions required by the process. Pressure vessels must comply with the GB150 {Steel Pressure Vessels} standard, and atmospheric pressure vessels must comply with the NB / T47003.1-2009 {Steel Welded Atmospheric Pressure Vessels} standard. Consequently, the pressure requirements during the reaction also have different design requirements for the container. Production must be strictly processed, inspected, and tested in accordance with the corresponding standards. Stainless steel reactors vary according to different production processes, operating conditions, etc. The design structure and parameters of the reactors are different, that is, the structural styles of the reactors are different, and they are non-standard container equipment.

[0003] When some reactions are carried out using a reactor, it is necessary to understand the changes in the materials in the reactor or container. Usually, a fixed sampling valve or sampling channel is installed at the bottom or top of the reactor. However, the reactor sampling device in the prior art may affect the progress of the reaction during sampling, and some reactions will also produce a certain amount of toxic gas during the reaction. In the prior art, the sealing between the sampling device and the sampling tube is insufficient, which may easily cause the toxic gas to escape, thereby affecting the life and health of the sampling personnel. Summary of the Invention

[0004] The purpose of the utility model is to provide an automatic opening and closing type reactor sampling device to solve the problems raised in the above background technology.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] An automatic opening and closing reactor sampling device comprises a reactor body and a sampling device, wherein an insertion hole is opened at the top center of the reactor body, a discharge port is provided at the bottom center of the insertion hole, a feed port is provided on one side of the top of the reactor body, and a sampling port is provided on the other side of the top of the reactor body, the sampling device comprises a negative pressure bin and a sampling tube, a sampling tube is provided at the bottom center of the negative pressure bin, a sampling device fixing mechanism is provided above the sampling port of the reactor body, the bottom of the sampling device fixing mechanism is connected to the top of the reactor body through a plurality of fixing columns, electric cylinders are provided on both sides of the top of the fixing columns, the top of the electric cylinder is connected to the bottom of the negative pressure bin, the sampling tube passes through the sampling device fixing mechanism and is located inside the sampling port;

[0007] A first bent tube is provided at the bottom of the outer surface of the negative pressure chamber, a first connecting tube is provided at the other end of the bottom of the first bent tube, a first transition chamber is provided at the other end of the first connecting tube, the other end of the first transition chamber is connected to the first valve through a second connecting tube, a second bent tube is provided at the other end of the first valve, and a second transition chamber is provided at the other end of the second bent tube.

[0008] Preferably, extension plates are provided on both sides of the fixing mechanism of the sampling device, and vertical plates are provided on the outer side of the top of the extension plates. A sliding inner cavity is laterally opened on the inner side of the vertical plates. Screws are provided on the top and bottom of the sliding inner cavity. A sliding plate is provided on the surface of the screw rod. The sliding plate is slidably connected in the sliding inner cavity. A movable plate is provided between the two sliding plates, and a connecting rod is provided at the bottom center of the movable plate. The bottom of the connecting rod passes through the negative pressure chamber and is located inside the negative pressure chamber. A piston is provided at the bottom of the connecting rod.

[0009] Preferably, a sealing ring is provided at the connection between the connecting rod and the negative pressure chamber, and the bottom of the sealing ring is fixedly connected to the top of the negative pressure chamber.

[0010] Preferably, a gear box is provided on the top of the two vertical plates, a gear box inner cavity is opened inside the gear box, a rotating shaft is provided on the top of the screw rod, the top of the rotating shaft is located at the top of the gear box inner cavity, a synchronous wheel is fixedly sleeved on the surface of the rotating shaft, and the two synchronous wheels are connected by a synchronous belt.

[0011] Preferably, the top of one of the rotating shafts passes through the gear box and is located above the top of the gear box, and a rotating handle is provided on the top of one of the rotating shafts.

[0012] Preferably, the top surface of the sampling device fixing mechanism is provided with several annular plates, the back of the annular plates is laterally opened with several sliding grooves, the sliding grooves are slidably connected with sliding rods, and the back of the sliding rods is fixedly connected to the outer surface of the negative pressure chamber.

[0013] Preferably, an extension pipe extends from the outer surface of the second transition chamber, a second valve is provided at the center of the surface of the extension pipe, and a connecting flange is connected to the other end surface of the extension pipe.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The utility model provides an automatic opening and closing reactor sampling device and sampling method. Part of the items in the reactor are pressed into the negative pressure bin by using a negative pressure bin. In addition, the items pressed into the negative pressure bin will be located in the sampling device after not being sampled by the sampler, and will not come into contact with other substances. Compared with the existing technology, the reaction process can be completed without affecting the process, and the operation is simpler and the efficiency is improved.

[0016] The utility model provides an automatic opening and closing reactor sampling device and sampling method. While pressing the items inside the reactor into the negative pressure bin by means of negative pressure, the first bending tube can be appropriately bent, and the small amount of items pressed in can be moved downward through the first bending tube and dropped into the first transition bin. After the amount of items in the first transition bin is sufficient, the first bending tube is pulled upward to make the first bending tube and the negative pressure bin level, and then the piston is pressed downward to press the excess items back into the reactor body. After the excess items are pressed back, the first valve is opened to allow all items in the first transition bin to enter the second transition bin, and the connection between the second transition bin and the sampler is sealed by the first flange to prevent toxic gases from entering the environment from the sampling device during the sampling process, thereby protecting the sampling personnel.

[0017] The utility model provides an automatic opening and closing reactor sampling device and sampling method, wherein a first bending tube is provided at the connection part between the negative pressure bin and the first transition bin, and the first bending tube is bent and made perpendicular to the negative pressure bin according to whether the articles in the negative pressure bin need to flow into the first transition bin, thereby realizing control over whether the articles flow in; in addition, a second bending tube is provided at the connection between the first transition bin and the second transition bin, which not only allows the articles in the first transition bin to flow into the second transition bin better, but also allows the sampler to take samples better by bending the second bending tube when the sampler extracts the articles from the second transition bin. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic structural diagram of the sampling device of the present utility model;

[0020] Figure 3 for Figure 2 Enlarged view of point B in the middle;

[0021] Figure 4 This is a cross-sectional view of the fixing mechanism of the sampling device of the present utility model;

[0022] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0023] Figure 6 This is a schematic structural diagram of the negative pressure barrel of the sampling device of the present utility model.

[0024] In the figure: 1. Reactor body; 2. Insert hole; 3. Discharge port; 4. Sampling device; 5. Sliding rod; 6. First bending pipe; 7. First connecting pipe; 8. First transition chamber; 9. First valve; 10. Second bending pipe; 11. Second connecting pipe; 12. Second transition chamber; 13. Sampling tube; 14. Extension tube; 15. Second valve; 16. Connecting flange; 17. Sampling device fixing mechanism; 18. Extension plate; 19. Fixed column; 20. Vertical plate; 21. Gear box; 22. Moving plate; 23. Sliding plate; 24. Sliding inner cavity; 25. Negative pressure chamber; 26. Annular plate; 27. Slide groove; 28. Connecting rod; 29. ​​Piston; 30. Electric cylinder; 31. Sealing ring; 32. Screw; 33. Rotating shaft; 34. Rotating handle; 35. Gear box inner cavity; 36. Synchronous belt; 37. Synchronous wheel. DETAILED DESCRIPTION

[0025] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0027] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0028] See also Figure 1-6 , the utility model provides a technical solution:

[0029] An automatic opening and closing reactor sampling device includes a reactor body 1 and a sampling device 4. An insertion hole 2 is opened at the top center of the reactor body 1, and a discharge port 3 is provided at the bottom center of the insertion hole 2. A feed port is provided on one side of the top of the reactor body 1, and a sampling port is provided on the other side of the top of the reactor body 1. The sampling device 4 includes a negative pressure bin 25 and a sampling tube 13. The sampling tube 13 is provided at the bottom center of the negative pressure bin 25. A sampling device fixing mechanism 17 is provided above the sampling port of the reactor body 1. The bottom of the sampling device fixing mechanism 17 is connected to the top of the reactor body 1 through a plurality of fixing columns 19. Electric cylinders 30 are provided on both sides of the top of the fixing columns 19. The top of the electric cylinder 30 is connected to the bottom of the negative pressure bin 25. The sampling tube 13 passes through the sampling device fixing mechanism 17 and is located inside the sampling port.

[0030] A first bent tube 6 is provided at the bottom of the outer surface of the negative pressure chamber 25, a first connecting tube 7 is provided at the other end of the bottom of the first bent tube 6, a first transition chamber 8 is provided at the other end of the first connecting tube 7, the other end of the first transition chamber 8 is connected to the first valve 9 through a second connecting tube 11, a second bent tube 10 is provided at the other end of the first valve 9, and a second transition chamber 12 is provided at the other end of the second bent tube 10.

[0031] Furthermore, extension plates 18 are provided on both sides of the sampling device fixing mechanism 17, and a vertical plate 20 is provided on the outer side of the top of the extension plate 18. A sliding inner cavity 24 is laterally opened on the inner side of the vertical plate 20, and a screw rod 32 is provided at the top and bottom of the sliding inner cavity 24. A sliding plate 23 is provided on the surface of the screw rod 32. The sliding plate 23 is slidably connected in the sliding inner cavity 24. A movable plate 22 is provided between the two sliding plates 23, and a connecting rod 28 is provided at the bottom center of the movable plate 22. The bottom of the connecting rod 28 passes through the negative pressure chamber 25 and is located inside the negative pressure chamber 25. A piston 29 is provided at the bottom of the connecting rod 28.

[0032] Furthermore, a gear box 21 is provided on the top of the two vertical plates 20, and a gear box inner cavity 35 is opened inside the gear box 21. A rotating shaft 33 is provided on the top of the screw rod 32, and the top of the rotating shaft 33 is located at the top of the gear box inner cavity 35. A synchronous wheel 37 is fixedly sleeved on the surface of the rotating shaft 33, and the two synchronous wheels 37 are connected by a synchronous belt 36.

[0033] Furthermore, the top of one of the rotating shafts 33 passes through the gear box 21 and is located above the top of the gear box 21 , and a rotating handle 34 is provided on the top of one of the rotating shafts 33 .

[0034] Specifically, when the piston 29 needs to be moved, the sampling personnel rotates the rotating handle 34. After the rotation, the rotating handle 34 will rotate the rotating shaft 33. The rotation of the rotating shaft 33 will rotate the screw rod 32 and at the same time rotate the synchronous wheel 37. The rotation of the synchronous wheel 37 will rotate the other synchronous wheel 37 through the synchronous belt 36, and then the two screw rods 32 will rotate synchronously. The rotation of the screw rod 32 will move the sliding plate 23. The movement of the sliding plate 23 will move the movable plate 22. The movement of the movable plate 22 will move the connecting rod 28. The movement of the connecting rod 28 will move the piston 29, thereby pressing the internal material of the reactor body 1 into the negative pressure chamber 25 through the principle of negative pressure.

[0035] Furthermore, a sealing ring 31 is provided at the connection between the connecting rod 28 and the negative pressure chamber 25. The bottom of the sealing ring 31 is fixedly connected to the top of the negative pressure chamber 25. The setting of the sealing ring 31 seals the connecting rod 28 and the negative pressure chamber 25, preventing gas from being discharged from the connection between the connecting rod 28 and the negative pressure chamber 25 and affecting the surrounding environment.

[0036] Furthermore, a plurality of annular plates 26 are provided on the top surface of the sampling device fixing mechanism 17, and a plurality of slide grooves 27 are horizontally opened on the back side of the annular plate 26. The slide grooves 27 are slidably connected with the slide rod 5, and the back side of the slide rod 5 is fixedly connected to the outer surface of the negative pressure chamber 25.

[0037] Specifically, sometimes it is necessary to sample the top of the liquid surface inside the reactor body 1. By starting the electric cylinder 30 to compress the electric cylinder 30, the height of the negative pressure chamber 25 will be lowered, so that the sampling tube 13 will contact the top of the liquid surface inside the reactor body 1, so that the top of the liquid surface inside the reactor body 1 can be sampled through the sampling tube 13 by means of negative pressure.

[0038] In addition, during the sampling process, the slide rod 5 on the outside of the negative pressure chamber 25 will move along the slide groove 27, which mainly serves to stabilize the movement of the negative pressure chamber 25 and prevent the negative pressure chamber 25 from shifting during the movement, thereby causing the piston 29 to get stuck during the movement, and unable to press out the items inside the reactor body 1 through negative pressure.

[0039] It should be noted that after sampling is completed, the electric cylinder 30 can be started again to extend the electric cylinder 30, so that the height of the negative pressure chamber 25 returns to its original position, and the sampling tube 13 leaves the top of the liquid surface inside the reactor body 1.

[0040] Furthermore, an extension pipe 14 extends from the outer surface of the second transition chamber 12 . A second valve 15 is provided at the center of the surface of the extension pipe 14 . A connecting flange 16 is connected to the other end surface of the extension pipe 14 .

[0041] Finally, it should be noted that when the reactor body 1 is used for reaction, if the rotary handle 34 is not rotated, the items inside the reactor body 1 will not be drawn out. When the rotary handle 34 is rotated, the items inside the reactor body 1 will be drawn out, thereby realizing automatic opening and closing of the reactor sampling.

[0042] Working principle: Step S1, start the cylinder 30 to move the negative pressure chamber 25 and the bottom sampling tube 13 together in the vertical direction;

[0043] Step S2: Rotate the rotary handle 34 to move the movable plate 23 upward, causing the piston 29 to move upward, and the items in the reactor body 1 to be pressed into the negative pressure chamber 25. After the amount of items in the first transition chamber 8 is sufficient, pull the first bent tube 6 upward to make it level with the negative pressure chamber 25, and then push the piston 29 downward to push the excess items back into the reactor body 1.

[0044] Step S3: bend the first bending tube 6 downward, and the contents of the reactor body 1 will enter the first transition chamber 8 through the first connecting tube 7 under their own gravity;

[0045] Step S4, connecting the flange of the sampler to the connecting flange 16 to achieve sealing;

[0046] Step S5: Open the first valve 9, and the items in the first transition bin 8 will enter the second transition bin 12 through the second connecting pipe 11, the first valve 9, and the second bent pipe 10 in sequence;

[0047] Step S6: Open the second valve 15 and draw the objects in the second transition chamber 12 into the sampler through the sampler;

[0048] Step S7: After sampling is completed, close the second valve 15, remove the sampler from the connecting flange 16, bend the first bent tube 6 and the second bent tube 10 upward, and let the objects remaining in the second transition chamber 12 pass through the second bent tube 10, the first valve 9, the second connecting tube 11, the first transition chamber 8, the first connecting tube 7, the first bent tube 6, the negative pressure chamber 25, and the sampling tube 13 in sequence by gravity and then return to the reactor body 1;

[0049] Step S8: close the first valve 9, and the sampling is completed.

[0050] Furthermore, in step S5, the angle of the second bending tube 10 is changed to allow the articles to enter the second transition bin 12 better. In step S6, the angle of the second bending tube 10 is changed to facilitate the sampler to take samples from the second transition bin 12.

[0051] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic opening and closing reactor sampling device, comprising a reactor body (1) and a sampling device (4), characterized in that: An insertion hole (2) is provided at the center of the top of the reactor body (1), a discharge port (3) is provided at the center of the bottom of the insertion hole (2), a feed port is provided on one side of the top of the reactor body (1), and a sampling port is provided on the other side of the top of the reactor body (1), the sampling device (4) comprises a negative pressure chamber (25) and a sampling tube (13), the sampling tube (13) is provided at the center of the bottom of the negative pressure chamber (25), a sampling device fixing mechanism (17) is provided above the sampling port of the reactor body (1), the bottom of the sampling device fixing mechanism (17) is connected to the top of the reactor body (1) through a plurality of fixing columns (19), electric cylinders (30) are provided on both sides of the top of the fixing columns (19), the top of the electric cylinder (30) is connected to the bottom of the negative pressure chamber (25), and the sampling tube (13) passes through the sampling device fixing mechanism (17) and is located inside the sampling port; A first bent tube (6) is provided at the bottom of the outer surface of the negative pressure chamber (25), a first connecting tube (7) is provided at the other end of the bottom of the first bent tube (6), a first transition chamber (8) is provided at the other end of the first connecting tube (7), the other end of the first transition chamber (8) is connected to the first valve (9) through a second connecting tube (11), a second bent tube (10) is provided at the other end of the first valve (9), and a second transition chamber (12) is provided at the other end of the second bent tube (10).

2. The automatic opening and closing reactor sampling device according to claim 1, characterized in that: Extension plates (18) are provided on both sides of the sampling device fixing mechanism (17), a vertical plate (20) is provided on the outer side of the top of the extension plate (18), a sliding inner cavity (24) is transversely opened on the inner side of the vertical plate (20), a screw rod (32) is provided at the top and bottom of the sliding inner cavity (24), a sliding plate (23) is provided on the surface of the screw rod (32), the sliding plate (23) is engaged and slidably connected in the sliding inner cavity (24), a movable plate (22) is provided between the two sliding plates (23), a connecting rod (28) is provided at the bottom center of the movable plate (22), the bottom of the connecting rod (28) passes through the negative pressure chamber (25) and is located inside the negative pressure chamber (25), and a piston (29) is provided at the bottom of the connecting rod (28).

3. The automatic opening and closing reactor sampling device according to claim 2, characterized in that: A sealing ring (31) is provided at the connection between the connecting rod (28) and the negative pressure chamber (25), and the bottom of the sealing ring (31) is fixedly connected to the top of the negative pressure chamber (25).

4. The automatic opening and closing reactor sampling device according to claim 2, characterized in that: A gear box (21) is provided on the top of the two vertical plates (20), a gear box inner cavity (35) is provided inside the gear box (21), a rotating shaft (33) is provided on the top of the screw rod (32), the top of the rotating shaft (33) is located at the top of the gear box inner cavity (35), a synchronous wheel (37) is fixedly sleeved on the surface of the rotating shaft (33), and the two synchronous wheels (37) are connected by a synchronous belt (36).

5. The automatic opening and closing reactor sampling device according to claim 4, characterized in that: The top of one of the rotating shafts (33) passes through the gear box (21) and is located above the top of the gear box (21), and a rotating handle (34) is provided on the top of one of the rotating shafts (33).

6. The automatic opening and closing reactor sampling device according to claim 1, characterized in that: The top surface of the sampling device fixing mechanism (17) is provided with a plurality of annular plates (26), the back surface of the annular plates (26) is transversely provided with a plurality of slide grooves (27), the slide grooves (27) are slidably connected to the slide rods (5), and the back surface of the slide rods (5) is fixedly connected to the outer surface of the negative pressure chamber (25).

7. The automatic opening and closing reactor sampling device according to claim 1, characterized in that: An extension pipe (14) extends from the outer surface of the second transition chamber (12), a second valve (15) is provided at the center of the surface of the extension pipe (14), and a connecting flange (16) is connected to the other end surface of the extension pipe (14).

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