A reagent dropping device for hydroxyacetophenone production

Abstract

The utility model discloses a reagent drop device of hydroxyacetophenone production belongs to hydroxyacetophenone production technical field, it includes the main part, the inside oscillating mechanism of symmetry structure is arranged to main part, the oscillating mechanism includes drive motor, eccentric wheel and transmission link, and the protective cover is installed to main part top, the guide rail is laid in the protective cover, and the drop liquid mechanism is slidably connected in the guide rail, through the motor of oscillating mechanism, eccentric wheel and spring cooperation, realize the efficient oscillation mixing of test tube, guarantee reagent reaction fully, and the combination of card material frame and connecting rod improves the stability when test tube oscillation, especially suitable for volatile, corrosive reagent's handling in hydroxyacetophenone production, and the cooperation of drop liquid mechanism and guide rail realizes the accurate drop liquid of multiple test tubes, and the operation efficiency is improved, and the protective cover provides the closed environment for entire operation process, reduces external pollution, guarantees the operation safety, and each structure synergy effect, and the mixing efficiency, operation safety and reagent handling's specialty are given consideration to.

Description

Technical Field

[0001] This utility model belongs to the field of hydroxyacetophenone production technology, specifically a reagent dripping device for hydroxyacetophenone production. Background Technology

[0002] Hydroxyacetophenone, as a key intermediate in the field of organic synthesis, is widely used in drug preparation (such as the synthesis of phenylephrine) and fragrance research and development. Its production process has extremely high requirements for reagent addition accuracy, reaction sealing and mixing efficiency. The amount of reagent added must be precisely controlled to avoid the generation of by-products, and leakage of volatile reagents (such as solvents such as benzene and diethyl ether) must be prevented to ensure reaction purity and operational safety. In the laboratory-scale and industrial-scale pilot-scale stages of hydroxyacetophenone, the reagent addition device is the core equipment connecting the raw material ratio and the reaction process, and its performance directly affects the product yield and production safety.

[0003] According to a search, patent CN208591814U discloses a reagent dripping device based on 3-hydroxyacetophenone. The device includes a plate, an outer plate, an inner plate, a magnifying glass, a rotating rod, a transparent placement tray, an eccentric wheel, a motor, and a rotating ring. The outer plate is fixed to the left end of the base plate. The inner plate is mounted on the upper part of the outer plate and extends into the outer plate. A magnifying glass is fixed inside the inner plate, providing auxiliary observation functionality. The rotating rod is mounted on the upper part of the base plate and extends into the base plate. A transparent placement tray is mounted on the rotating rod. A rotating ring is mounted on the rotating rod and mounted on the upper part of the base plate. An eccentric wheel is mounted on the upper end of the rotating ring. A motor is fixed to the outer end of the eccentric wheel and is located on the upper end of the rotating ring. Both the eccentric wheel and the motor are mounted under the transparent placement tray, providing automatic oscillation functionality. This invention is simple to operate, convenient for observation, and has an automatic oscillation function. The comparison file has the following shortcomings: The existing technology only uses an arc-shaped clamping plate and a soft pad to fix the test tube without any sealing components. The mouth of the test tube is always completely open. The reagents such as benzene and diethyl ether commonly used in the production of hydroxyacetophenone are highly volatile. During the shaking process, a large amount of the reagents will evaporate into the air, which will endanger the health of the operators and pose a safety hazard. The reagent splashing during shaking is severe, causing waste of raw materials and contamination of equipment: Due to the lack of sealing protection, the reagent inside the test tube is easily splashed from the tube opening due to centrifugal force or amplitude during shaking, which not only wastes raw materials, but also contaminates the transparent placement tray, magnifying glass and other device components, increasing the difficulty of cleaning. Utility Model Content

[0004] To overcome the above-mentioned defects, this utility model provides a reagent dripping device for the production of hydroxyacetophenone, which solves the technical problems raised in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a reagent dripping device for the production of hydroxyacetophenone, comprising a main body, wherein an oscillation mechanism is symmetrically arranged within the main body, the oscillation mechanism comprising a drive motor, an eccentric wheel, and a transmission rod, wherein the output end of the drive motor is coaxially fixed with the eccentric wheel, the eccentric wheel contacts the bottom of a movable plate via the transmission rod, a movable plate is slidably connected within the main body, the movable plate is located above the oscillation mechanism, multiple sets of springs are fixedly connected to the bottom of the main body, and a clip is fixedly installed on the top of the movable plate. The material rack has multiple sets of connecting rods rotatably connected to its outer side. Multiple test tube bodies are housed within the rack. A pressure plate is positioned above each test tube body. Multiple sets of sleeves for use with the test tube bodies are fixedly connected to the bottom of the pressure plate. A through hole for use with the sleeve is opened at the top of the pressure plate. A diaphragm is fixedly connected within the through hole. The diaphragm is composed of multiple sets of fan-shaped elastic membranes, with the edges of the membranes adhering to each other to form a closed state. A protective cover is installed on the top of the main body. A guide rail is laid inside the protective cover, and a dripping mechanism is slidably connected within the guide rail.

[0006] As a further embodiment of this utility model: the main body is fixedly connected with a limiting block in a symmetrical structure, and the outer side of the movable plate is provided with a sliding groove for use with the limiting block.

[0007] As a further embodiment of this utility model, the limiting block has multiple sets of slots that cooperate with the test tube body.

[0008] As a further embodiment of this utility model: a gap is provided between the test tube body and the slot, and an anti-slip rubber pad is fixedly connected to the inner wall of the slot.

[0009] As a further embodiment of this utility model: the dripping mechanism includes a sliding seat, a liquid storage tank, a metering push rod, and a dripping needle. The sliding seat is slidably connected to the guide rail, and the outer diameter of the dripping needle is smaller than the inner diameter of the through hole.

[0010] As a further embodiment of this utility model: the cover is a cylindrical structure with an opening at the lower end, and an annular silicone sealing ring is fixedly connected to the inner wall of the cover.

[0011] As a further embodiment of this utility model: the protective cover is snapped together with the main body, and a magnetic latch that cooperates with the main body is installed on the inner side of the protective cover.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: The oscillation mechanism, with its motor, eccentric wheel, and spring, achieves efficient oscillation and mixing of test tubes, ensuring complete reagent reaction. The combination of the clamping rack and connecting rod enhances the stability of the test tubes during oscillation, preventing them from tipping over or colliding. The double-sealing structure of the cap and diaphragm not only meets the dripping requirements but also effectively prevents reagent evaporation and splashing, making it particularly suitable for handling volatile and corrosive reagents in the production of hydroxyacetophenone. The dripping mechanism, in conjunction with the guide rail, enables precise dripping from multiple test tubes, improving operational efficiency. The protective cap provides a closed environment for the entire operation, reducing external contamination and ensuring operational safety. The synergistic effect of these components balances mixing efficiency, operational safety, and the professionalism of reagent handling. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a first-view schematic diagram of the cross-sectional structure of this utility model; Figure 3 This is a second-view schematic diagram of the cross-sectional structure of this utility model; Figure 4 This is a first-view schematic diagram of the disassembled structure of this utility model; Figure 5 This is a second-view schematic diagram of the split structure of this utility model.

[0014] In the diagram: 1. Main body; 2. Protective cover; 3. Guide rail; 4. Dropping mechanism; 5. Oscillating mechanism; 6. Spring; 7. Movable plate; 8. Limiting block; 9. Slide groove; 10. Material holder; 11. Slot; 12. Test tube body; 13. Connecting rod; 14. Pressure plate; 15. Cover; 16. Through hole; 17. Diaphragm. Detailed Implementation

[0015] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0016] like Figures 1-5 As shown, this utility model provides a technical solution: A reagent dripping device for the production of hydroxyacetophenone includes a main body 1. An oscillation mechanism 5 is symmetrically arranged within the main body 1. The oscillation mechanism 5 includes a drive motor, an eccentric wheel, and a transmission rod. The output end of the drive motor is coaxially fixed with the eccentric wheel. The eccentric wheel contacts the bottom of a movable plate 7 via the transmission rod. A movable plate 7 is slidably connected within the main body 1, positioned above the oscillation mechanism 5. Multiple sets of springs 6 are fixedly connected to the bottom of the movable plate 7. A material clamping frame 10 is fixedly installed on the top of the movable plate 7, and multiple sets of connecting springs are rotatably connected to the outer side of the material clamping frame 10. The rod 13 and the material holder 10 are equipped with multiple test tube bodies 12. A pressure plate 14 is set above the test tube body 12. Multiple sleeve caps 15 are fixedly connected to the bottom of the pressure plate 14 and used in conjunction with the test tube body 12. A through hole 16 is opened at the top of the pressure plate 14 and used in conjunction with the sleeve cap 15. A diaphragm 17 is fixedly connected in the through hole 16. The diaphragm 17 is composed of multiple sets of elastic membranes with fan-shaped structures, and the edges of the membranes are attached to each other to form a closed state. A protective cover 2 is installed on the top of the main body 1. A guide rail 3 is laid in the protective cover 2. A dripping mechanism 4 is slidably connected in the guide rail 3.

[0017] The test tube body 12 containing the raw materials is placed into the material holder 10, and the pressure plate 14 is covered by the cover 15 to cover the opening of the test tube body 12, forming a preliminary seal. At this time, the fan-shaped elastic membrane of the diaphragm 17 is in a closed state, which can prevent the reagent from evaporating in advance. Then, the protective cover 2 is covered, and the dripping mechanism 4 slides in the guide rail 3 so that the dripping needle is aligned with the through hole 16 of the pressure plate 14. When the needle passes through the through hole 16, it squeezes the membrane of the diaphragm 17, and the membrane separates to form a channel, which facilitates the precise dripping of the reagent into the test tube body 12. After the dripping is completed, the needle is pulled out, and the membrane automatically closes to restore the seal, avoiding the reagent from evaporating or splashing when shaken after dripping. After the dripping is completed, the oscillation mechanism 5 is started, and the drive motor drives the eccentric wheel to rotate. The transmission rod periodically pushes the movable plate 7, and with the elastic reset effect of multiple sets of springs 6, the movable plate 7 drives the material holder 10 and the test tube body 12 to achieve stable oscillation. At the same time, the connecting rod 13 on the outside of the material holder 10 rotates synchronously with the oscillation, further improving the stability of the oscillation process and ensuring that the reagent in the test tube is fully mixed. After the mixing is completed, the oscillation mechanism 5 is turned off, and the test tube can be taken out by opening the protective cover 2. The oscillation mechanism 5, with its motor, eccentric wheel, and spring 6, achieves efficient oscillation and mixing of the test tubes, ensuring thorough reagent reaction. The combination of the clamping rack 10 and connecting rod 13 enhances the stability of the test tubes during oscillation, preventing them from tipping over or colliding. The double-sealing structure of the cap 15 and diaphragm 17 not only meets the dripping requirements but also effectively prevents reagent evaporation and splashing, making it particularly suitable for handling volatile and corrosive reagents in the production of hydroxyacetophenone. The dripping mechanism 4, in conjunction with the guide rail 3, enables precise dripping from multiple test tubes, improving operational efficiency. The protective cap 2 provides a closed environment for the entire operation, reducing external contamination and ensuring operational safety. The synergistic effect of these structures balances mixing efficiency, operational safety, and the professionalism of reagent handling.

[0018] participate Figures 1 to 5 The main body 1 has a symmetrical structure with a fixed limiting block 8. The movable plate 7 has a sliding groove 9 on the outside that is used to cooperate with the limiting block 8. The limiting block 8 has multiple sets of slots 11 that are used to cooperate with the test tube body 12. There is a gap between the test tube body 12 and the slots 11. The inner wall of the slots 11 is fixedly connected with an anti-slip rubber pad. The dripping mechanism 4 includes a sliding seat, a liquid storage tank, a quantitative push rod and a dripping needle. The sliding seat is slidably connected to the guide rail 3. The outer diameter of the dripping needle is smaller than the inner diameter of the through hole 16. The cover 15 is a cylindrical structure with an open bottom. The inner wall of the cover 15 is fixedly connected with an annular silicone sealing ring. The protective cover 2 is snapped to the main body 1. The inner side of the protective cover 2 is equipped with a magnetic lock that cooperates with the main body 1.

[0019] Specifically, the test tube body 12 is first placed into the slot 11 of the limiting block 8. The anti-slip rubber pad on the inner wall of the slot 11 fits the outer wall of the test tube through elastic deformation. With the gap reserved between the test tube and the slot 11, the test tube can be prevented from being damaged due to thermal expansion and contraction, and the test tube can be prevented from shifting during oscillation. At the same time, the symmetrically distributed limiting blocks 8 and the sliding groove 9 on the outer side of the movable plate 7 form a sliding guide to ensure that the movable plate 7 oscillates stably only in the vertical direction. Then, the pressure plate 14 is placed on top, so that the cover 15 covers the mouth of the test tube. The annular silicone sealing ring on the inner wall of the cover fits tightly against the outer wall of the test tube, enhancing the sealing effect and preventing reagent evaporation. Next, the protective cover 2 is connected to the main body 1 by a buckle, and the magnetic lock further reinforces it, forming a closed environment. When the liquid is dripped, the sliding seat of the dripping mechanism 4 moves along the guide rail 3, so that the dripping needle with an outer diameter smaller than the inner diameter of the through hole 16 can pass smoothly through the through hole 16. In conjunction with the liquid storage tank and the quantitative push rod, precise dripping is achieved. After the dripping is completed, the oscillation mechanism 5 works, and the movable plate 7 drives the test tube to oscillate stably.

[0020] Working principle of this utility model: First, the test tubes are efficiently mixed by the oscillation mechanism 5. The drive motor drives the eccentric wheel to rotate, and the transmission rod periodically pushes the movable plate 7. With the elastic reset effect of multiple sets of springs 6, the movable plate 7 drives the material holder 10 and the test tube body 12 to oscillate back and forth. At the same time, the connecting rod 13 on the outside of the material holder 10 rotates synchronously with the oscillation, further ensuring the stability of the oscillation process and ensuring that the reagents in the test tubes react fully. Secondly, after placing the test tube into the material holder 10, the pressure plate 14 is put on so that the cap 15 covers the mouth of the test tube to form a preliminary seal. The fan-shaped elastic diaphragm 17 in the through hole 16 remains in a closed state before the liquid is dispensed. When the liquid is dispensed, the needle passes through the diaphragm 17 to form a channel. After the liquid is dispensed, the diaphragm 17 automatically returns to a closed state. Together with the annular silicone sealing ring on the inner wall of the cap 15, it effectively prevents the evaporation and splashing of reagents. It is worth mentioning that the device improves operational reliability through precise guidance and positioning structure. The limiting block 8 in the main body 1 cooperates with the sliding groove 9 of the movable plate 7 to strictly limit the movement of the movable plate 7 in the vertical direction and avoid horizontal deviation. The anti-slip rubber pad on the inner wall of the slot 11 and the reserved gap between the test tube can prevent the test tube from shifting when it vibrates and avoid damage caused by thermal expansion and contraction. The sliding seat of the dripping mechanism 4 moves along the guide rail 3, and the outer diameter of the dripping needle is smaller than the inner diameter of the through hole 16 to ensure accurate dripping. Finally, the protective cover 2 is double-fixed by buckles and magnetic locks, forming a closed environment with the main body 1, reducing external contamination, ensuring operational safety, and the synergistic effect of each structure achieves the organic unity of reagent mixing, sealing protection, and precise operation.

[0021] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A reagent dripping device for the production of hydroxyacetophenone, comprising a main body (1), characterized in that: The main body (1) is equipped with a symmetrical oscillation mechanism (5). The oscillation mechanism (5) includes a drive motor, an eccentric wheel, and a transmission rod. The output end of the drive motor is fixed coaxially with the eccentric wheel. The eccentric wheel contacts the bottom of the movable plate (7) through the transmission rod. The movable plate (7) is slidably connected inside the main body (1). The movable plate (7) is located above the oscillation mechanism (5). Multiple sets of springs (6) are fixedly connected to the bottom of the main body (1) and the top of the movable plate (7) is fixedly installed with a material clamping frame (10). Multiple sets of connecting rods (13) are rotatably connected to the outside of the material clamping frame (10). The material clamping frame (10) is equipped with... There are multiple test tube bodies (12), and a pressure plate (14) is provided above the test tube body (12). The bottom of the pressure plate (14) is fixedly connected to multiple sets of sleeve caps (15) used in conjunction with the test tube body (12). The top of the pressure plate (14) is provided with a through hole (16) used in conjunction with the sleeve cap (15). A diaphragm (17) is fixedly connected in the through hole (16). The diaphragm (17) is composed of multiple sets of elastic membranes with fan-shaped structures, and the edges of the membranes are attached to each other to form a closed state. A protective cover (2) is installed on the top of the main body (1). A guide rail (3) is laid in the protective cover (2). A dripping mechanism (4) is slidably connected in the guide rail (3).

2. The reagent dripping device for producing hydroxyacetophenone according to claim 1, characterized in that: The main body (1) is fixedly connected with a limiting block (8) in a symmetrical structure, and the movable plate (7) has a sliding groove (9) on the outside that is used in conjunction with the limiting block (8).

3. The reagent dripping device for producing hydroxyacetophenone according to claim 2, characterized in that: The limiting block (8) has multiple sets of slots (11) for use with the test tube body (12).

4. The reagent dripping device for producing hydroxyacetophenone according to claim 3, characterized in that: A gap is provided between the test tube body (12) and the slot (11), and an anti-slip rubber pad is fixedly connected to the inner wall of the slot (11).

5. The reagent dripping device for producing hydroxyacetophenone according to claim 1, characterized in that: The dripping mechanism (4) includes a sliding seat, a liquid storage tank, a metering push rod and a dripping needle. The sliding seat is slidably connected to the guide rail (3), and the outer diameter of the dripping needle is smaller than the inner diameter of the through hole (16).

6. The reagent dripping device for producing hydroxyacetophenone according to claim 1, characterized in that: The cover (15) is a cylindrical structure with an opening at the lower end, and an annular silicone sealing ring is fixedly connected to the inner wall of the cover (15).

7. The reagent dripping device for producing hydroxyacetophenone according to claim 1, characterized in that: The protective cover (2) is snapped together with the main body (1), and a magnetic latch that cooperates with the main body (1) is installed on the inner side of the protective cover (2).

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