A sampling device for a fine chemical reaction vessel

Abstract

The utility model relates to the technical field of reaction kettle sampling, specifically is a kind of fine chemical reaction kettle sampling device, the fixed flange is connected with the sampling mechanism for sampling, the one side of the sampling mechanism is connected with the collection mechanism for collecting;The sampling mechanism includes flow restrictor, the flow restrictor is fixedly connected on the fixed flange upper end, the flow restrictor top is communicated with glass tube by pipeline, the top of glass tube is communicated with negative pressure tube.The utility model provides negative pressure suction force by external negative pressure equipment, makes the air in glass tube be extracted, after the negative pressure in the flow restrictor interior, through the movable tube of fixed pipe lower end, can suck out the raw material inside the reaction kettle body, makes raw material enter glass tube, conveniently carries out sampling operation, under the effect of reset spring self elasticity, can prevent the raw material extracted in glass tube from backflow, whole sampling process operation is simple, and it is convenient to sample.

Description

Technical Field

[0001] This utility model relates to the field of reactor sampling technology, specifically a sampling device for a fine chemical reactor. Background Technology

[0002] In a broad sense, a reaction vessel is a container where physical or chemical reactions occur. Through structural design and parameter configuration, it achieves the heating, evaporation, cooling, and low-to-high-speed mixing functions required by the process. With the continuous development of society, my country's chemical industry has developed very rapidly. After the reaction in the reaction vessel is completed, technicians need to sample and analyze the samples, summarize the data, and verify whether the reaction was complete.

[0003] In the prior art, the utility model patent with document number CN211401785U discloses an automatic sampling device for a fine chemical reaction vessel, which includes a base, two support legs fixedly connected to the top of the base, a reaction vessel body above the base, and the bottom of the reaction vessel body is fixedly connected to the top of the two support legs. A feed inlet is provided near the right side of the top of the reaction vessel body. A cylinder is provided above the reaction vessel body, and the bottom end of the cylinder penetrates through the top of the reaction vessel body and communicates with the interior of the reaction vessel body. A rubber stopper is slidably connected inside the cylinder.

[0004] The aforementioned device uses the downward movement of the threaded rod to drive the push rod and rubber stopper downwards, thereby compressing the air inside the reactor body to facilitate subsequent sampling operations. However, the sampling process is rather cumbersome during use, requiring the compression of the air inside the reactor, which slows down the sampling process. Therefore, there is a need to develop a sampling device for fine chemical reactors that facilitates sampling operations. Utility Model Content

[0005] To address the above technical problems, this utility model provides a sampling device for fine chemical reactors that facilitates sampling operations, thereby solving the problem of the relatively complex operation process of existing reactor sampling devices.

[0006] To solve the above-mentioned technical problems, the present invention provides a sampling device for a fine chemical reaction vessel, comprising a reaction vessel body, a connecting seat connected to the top of the reaction vessel body, a fixed flange connected to the upper surface of the connecting seat by bolts, a sampling mechanism for sampling connected to the fixed flange, and a collection mechanism for collection connected to one side of the sampling mechanism; the sampling mechanism includes a flow restrictor, the flow restrictor being fixedly connected to the upper end of the fixed flange, a glass tube connected to the top of the flow restrictor via a pipe, a negative pressure pipe connected to the top of the glass tube, a first valve fixedly connected to the negative pressure pipe, and the other end of the negative pressure pipe being connected to a negative pressure device.

[0007] Furthermore, a fixing ring is fixedly connected inside the current limiting component, a guide rod is fixedly connected to the top of the fixing ring, a current limiting plate is slidably sleeved on the guide rod, and a return spring is sleeved on the guide rod. The two ends of the return spring are fixedly connected to the current limiting plate and the top of the current limiting component, respectively.

[0008] Furthermore, the collection mechanism includes a connecting pipe, which is connected to the lower end of the glass tube via a pipe. A second valve is fixedly connected to the connecting pipe, and a collection bottle is detachably connected to the end of the connecting pipe. A fixing plate is fixedly connected to the outside of the flow restrictor, and two symmetrically arranged limiting plates are fixedly connected to the fixing plate. The collection bottle is movably placed within the two limiting plates, and two fixing bolts are threadedly connected to the side wall of one of the limiting plates.

[0009] Furthermore, it also includes an adjustment mechanism, which is connected to the upper end of the connecting seat; the adjustment mechanism includes a stepper motor, which is fixedly connected to the upper surface of the fixed flange, and a drive gear is fixedly connected to the power output shaft of the stepper motor. A lead screw is rotatably connected through the fixed flange, and a driven gear is fixedly connected to the upper end of the lead screw. The drive gear and the driven gear mesh with each other. A movable tube is threadedly connected to the lower part of the lead screw, and a fixed tube is fixedly connected to the lower end of the fixed flange. The upper end of the movable tube is telescopically connected to the lower part of the fixed tube.

[0010] This utility model has the following advantages compared with the prior art:

[0011] 1. This utility model provides negative pressure adsorption force through an external negative pressure device, which draws out the air inside the glass tube. After the negative pressure is generated inside the flow limiting device, the raw material inside the reactor body can be drawn out through the movable tube at the lower end of the fixed tube, allowing the raw material to enter the glass tube for convenient sampling. Under the action of the elasticity of the reset spring, the flow limiting plate will be pushed to reset, causing the flow limiting plate to contact the upper surface of the fixed ring, thereby preventing the raw material drawn out of the glass tube from flowing back. The entire sampling process is simple to operate and convenient for sampling.

[0012] 2. This utility model uses a stepper motor to drive the active gear to rotate, which in turn drives the driven gear meshing with it to rotate, thereby driving the lead screw to rotate. When the lead screw rotates, it drives the threaded movable tube to move vertically up and down, which facilitates the adjustment of the sampling end height and enables the smooth acquisition of samples at different liquid levels in the reaction vessel, thus improving the lifting device. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0014] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0015] Figure 3 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 4 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 5 This is a side view of the structure of this utility model.

[0018] In the diagram: 1. Reactor body; 2. Connecting seat; 3. Fixed flange; 4. Flow limiting element; 41. Glass tube; 42. Negative pressure tube; 43. First valve; 44. Fixing ring; 45. Flow limiting plate; 46. Guide rod; 47. Return spring; 5. Connecting pipe; 51. Second valve; 52. Collection bottle; 53. Limiting plate; 54. Fixing plate; 55. Fixing bolt; 6. Stepper motor; 61. Driving gear; 62. Driven gear; 63. Lead screw; 64. Movable tube; 65. Fixed tube. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] like Figure 1-5 The sampling device for a fine chemical reactor shown includes a reactor body 1, a connecting seat 2 connected to the top of the reactor body 1, a fixed flange 3 connected to the upper surface of the connecting seat 2 by bolts, a sampling mechanism for sampling connected to the fixed flange 3, a collection mechanism for collection connected to one side of the sampling mechanism, and an adjustment mechanism for adjustment connected to the upper end of the connecting seat 2; the sampling mechanism includes a flow restrictor 4, which is fixedly connected to the upper end of the fixed flange 3, and a glass tube 41 connected to the top of the flow restrictor 4 by a pipe, a negative pressure pipe 42 connected to the top of the glass tube 41, a first valve 43 fixedly connected to the negative pressure pipe 42, and the upper end of the negative pressure pipe 42 connected to a negative pressure device, which can be a negative pressure pipeline in the production workshop, and the source of the negative pressure pipeline is connected to a negative pressure unit.

[0021] To prevent liquid backflow after negative pressure sampling, a fixing ring 44 is fixedly connected inside the flow limiting component 4. A through hole is opened in the middle of the fixing ring 44, and a guide rod 46 is fixedly connected to the top of the fixing ring 44. The upper end of the guide rod 46 is fixedly connected to the top of the inner part of the flow limiting component 4. To improve stability, two guide rods 46 can be used. A flow limiting plate 45 is slidably sleeved on the guide rod 46. The size of the flow limiting plate 45 is preferably able to cover the through hole opened in the middle of the fixing ring 44. A return spring 47 is sleeved on the guide rod 46. The two ends of the return spring 47 are fixedly connected to the flow limiting plate 45 and the top of the inner part of the flow limiting component 4, respectively. The selection of the return spring 47 is based on the fact that the negative pressure adsorption energy causes the return spring 47 to contract when the negative pressure equipment is running. A spring of appropriate strength can be selected according to the adsorption force of the negative pressure equipment without any creative work. When the flow limiting plate 45 contacts the upper surface of the fixing ring 44, the return spring 47 is in a slightly compressed state.

[0022] To facilitate the collection of samples extracted under negative pressure, a collection mechanism is adopted. The collection mechanism includes a connecting pipe 5, which is connected to the lower end of a glass tube 41 via a pipe. A second valve 51 is fixedly connected to the connecting pipe 5, and a nut cap is fixedly connected to the end of the connecting pipe 5. The mouth of the collection bottle 52 is threadedly connected to the nut cap. A fixing plate 54 is fixedly connected to the outside of the flow restrictor 4. Two symmetrically arranged arc-shaped limiting plates 53 are fixedly connected to the fixing plate 54. A space for placing the collection bottle 52 is formed between the two limiting plates 53. The collection bottle 52 is movably placed within the two limiting plates 53. To improve the placement stability of the collection bottle 52, two fixing bolts 55 are threadedly connected to the side wall of one limiting plate 53. During use, the ends of the fixing bolts 55 contact the outer wall of the collection bottle 52.

[0023] To facilitate the acquisition of samples at different liquid levels within the reactor and to allow for easy adjustment of the sampling end height, an adjustment mechanism is employed. This mechanism includes a stepper motor 6, which is bolted to the upper surface of the fixed flange 3. The power output shaft of the stepper motor 6 is fixedly connected to a drive gear 61. A lead screw 63 is rotatably connected through the fixed flange 3 via bearings and a sealing gasket. A driven gear 62 is fixedly connected to the upper end of the lead screw 63. The drive gear 61 meshes with the driven gear 62. A fixed tube 65 is fixedly connected to the lower end of the fixed flange 3. A movable tube 64 is slidably installed in the lower part of the fixed tube 65. A connecting plate is fixedly connected to the outer side of the lower end of the movable tube 64. The lower part of the lead screw 63 passes through the connecting plate and is threadedly connected to it.

[0024] The working principle of this embodiment is as follows:

[0025] In use, the device is assembled onto the reactor body 1. By aligning the fixed flange 3 with the connecting seat 2, the fixed flange 3 and the connecting seat 2 are fixed with bolts. The negative pressure pipe 42 is connected to the negative pressure equipment in the workshop. When sampling is required, the external negative pressure equipment is activated, and the first valve 43 is opened to extract the air from the glass tube 41. At this time, a negative pressure is formed inside the glass tube 41. Under the action of the negative pressure, the flow limiting plate 45 inside the flow limiting component 4 is pulled open, and the flow limiting plate 45 separates from the fixed ring 44, releasing the flow limiting component 4. At the same time, when the flow limiting plate 45 moves, it pushes the return spring 47 on the guide rod 46 to compress. After the negative pressure is generated inside the flow limiting component 4, the raw material inside the reactor body 1 can be sucked out through the movable pipe 64 at the lower end of the fixed pipe 65, allowing the raw material to enter the glass tube 41. After taking out an appropriate amount of raw material, the first valve 43 is closed. Under the action of the elasticity of the return spring 47, the flow limiting plate 45 will be pushed to reset, thereby preventing the raw material extracted from the glass tube 41 from flowing back.

[0026] When sampling depth adjustment is required, the stepper motor 6 is started to drive the drive gear 61 to rotate. The drive gear 61 meshes with and drives the driven gear 62 to rotate, which in turn drives the lead screw 63 to rotate. The lead screw 63 drives the threaded movable tube 64 to move vertically up and down, and the fixed tube 65 can guide the movable tube 64, thereby adjusting the sampling position inside the reactor body 1. After the raw material sampling is completed, the second valve 51 can be opened through the connecting tube 5 at the bottom of the glass tube 41, so that the raw material in the glass tube 41 flows into the collection bottle 52 for sampling. The fixing bolt 55 is loosened through the limiting plate 53 on the fixing plate 54, so that the end of the fixing bolt 55 is separated from the outer surface of the collection bottle 52, and the fixing of the collection bottle 52 is released. The collection bottle 52 can then be removed and the collected sample can be tested.

Claims

1. A sampling device for a fine chemical reaction vessel, comprising a reaction vessel body (1), characterized in that: The top of the reactor body (1) is connected to a connecting seat (2), and the upper surface of the connecting seat (2) is connected to a fixed flange (3) by bolts. A sampling mechanism for sampling is connected to the fixed flange (3), and a collection mechanism for collection is connected to one side of the sampling mechanism. The sampling mechanism includes a flow restrictor (4), which is fixedly connected to the upper end of the fixed flange (3). A glass tube (41) is connected to the top of the flow restrictor (4) through a pipe. A negative pressure pipe (42) is connected to the top of the glass tube (41). A first valve (43) is fixedly connected to the negative pressure pipe (42), and the other end of the negative pressure pipe (42) is connected to a negative pressure device.

2. The sampling device for a fine chemical reaction vessel according to claim 1, characterized in that: The flow limiting component (4) is fixedly connected to a fixing ring (44), and a guide rod (46) is fixedly connected to the top of the fixing ring (44). A flow limiting plate (45) is slidably sleeved on the guide rod (46), and a reset spring (47) is sleeved on the guide rod (46). The two ends of the reset spring (47) are fixedly connected to the flow limiting plate (45) and the top of the flow limiting component (4), respectively.

3. The sampling device for a fine chemical reaction vessel according to claim 2, characterized in that: The collection mechanism includes a connecting pipe (5), which is connected to the lower end of the glass tube (41) through a pipe. A second valve (51) is fixedly connected to the connecting pipe (5). A collection bottle (52) is detachably connected to the end of the connecting pipe (5). A fixing plate (54) is fixedly connected to the outside of the flow limiting member (4). Two symmetrically arranged limiting plates (53) are fixedly connected to the fixing plate (54). The collection bottle (52) is movably placed within the two limiting plates (53). Two fixing bolts (55) are threadedly connected to the side wall of one of the limiting plates (53).

4. The sampling device for a fine chemical reaction vessel according to claim 3, characterized in that: It also includes an adjustment mechanism, the upper end of the connecting seat (2) is connected to the adjustment mechanism; the adjustment mechanism includes a stepper motor (6), the stepper motor (6) is fixedly connected to the upper surface of the fixed flange (3), the power output shaft of the stepper motor (6) is fixedly connected to a drive gear (61), a lead screw (63) is rotatably connected through the fixed flange (3), the upper end of the lead screw (63) is fixedly connected to a driven gear (62), the drive gear (61) meshes with the driven gear (62), the lower part of the lead screw (63) is threadedly connected to a movable tube (64), the lower end of the fixed flange (3) is fixedly connected to a fixed tube (65), the upper end of the movable tube (64) is telescopically connected to the lower part of the fixed tube (65).

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