Accurate feeding device for producing non-phenol thermosensitive color developing agent

Abstract

The utility model discloses an accurate feeding device for producing a non-phenol thermosensitive color developing agent, which comprises a support frame, the support frame is fixedly arranged above a cover plate, the cover plate is buckled on the top opening end of a reaction kettle, a sealing strip is arranged between the cover plate and the top opening end of the reaction kettle, three uniformly distributed support seats are fixedly arranged on the periphery of the reaction kettle, and the support seats are fixedly arranged on the support frame. Adjusting assemblies arranged in the vertical direction are installed between the supporting bases and the supporting frame. A powder grinding mechanism and a liquid material storage box are fixedly installed above the supporting frame, a communicating pipe is installed at a discharging port of the powder grinding mechanism, and the bottom end of the communicating pipe is connected with an obliquely-arranged powder feeding pipe. A liquid feeding pipe arranged in the vertical direction is installed at a discharging port of the liquid material storage box, and the bottom end of the liquid feeding pipe penetrates through and is fixedly connected into the cover plate. According to the utility model, the problem that the top cover of the reaction kettle is difficult to open can be solved, repeated disassembly and assembly of the feeding pipeline in the cover opening process are avoided, and the leakage risk caused by cover opening is reduced.

Description

Technical Field

[0001] This utility model relates to a precision feeding device for the production of non-phenolic thermosensitive color developers, belonging to the field of color developer production technology. Background Technology

[0002] Non-phenolic thermosensitive color developers are environmentally friendly, safe, and stable color developers, primarily used to replace traditional phenolic color developers such as bisphenol A and bisphenol S. The development of non-phenolic thermosensitive color developers stems from the drawbacks of phenolic color developers, including easy oxidation, poor water and oil resistance, and short shelf life. Furthermore, some phenolic compounds (such as bisphenol A) possess potential carcinogenicity. Therefore, non-phenolic color developers have become the development direction for the thermal paper industry.

[0003] Currently, the preparation of non-phenolic thermosensitive colorimetric reagents typically involves reacting benzenesulfonyl isocyanate and phenylenediamine in an organic solvent. During the reaction, liquid benzenesulfonyl isocyanate and powdered phenylenediamine are fed into the reaction vessel using a feeding device.

[0004] When the inside of the reactor needs deep cleaning and inspection, or when internal components need to be modified or replaced, the reactor top cover must be fully opened for manual or mechanical operation. Opening the cover requires disassembling the liquid feeding mechanism and the powder feeding mechanism, which results in a long opening time. Furthermore, the opening process leads to repeated disassembly and reassembly of the feeding pipeline, increasing the risk of leakage.

[0005] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0006] This invention addresses the shortcomings of the prior art by providing a precise feeding device for the production of non-phenolic thermosensitive colorimetric agents. It can solve the problem of difficulty in opening the top cover of the reactor, avoid repeated disassembly and assembly of the feeding pipeline during the opening process, and reduce the risk of leakage caused by opening the cover.

[0007] To solve the above technical problems, the present invention adopts the following technical solution:

[0008] A precision feeding device for the production of non-phenolic thermosensitive colorimetric reagent includes a support frame, which is fixedly installed above a cover plate. The cover plate is fastened to the top opening of the reactor. A sealing strip is provided between the cover plate and the top opening of the reactor. Three evenly distributed support seats are fixedly installed around the reactor. Adjustment components arranged vertically are installed between the support seats and the support frame.

[0009] A powder grinding mechanism and a liquid material storage tank are fixedly installed above the support frame. A connecting pipe is installed at the outlet of the powder grinding mechanism. The bottom end of the connecting pipe is connected to the inclined powder feeding pipe, and the inner cavities of the two are connected.

[0010] The liquid material storage tank is equipped with a vertically arranged liquid feeding pipe at its outlet, and the bottom end of the liquid feeding pipe is inserted through and fixed inside the cover plate.

[0011] Furthermore, a feed hopper is installed on the powder grinding mechanism.

[0012] Furthermore, the bottom end of the powder feeding pipe is inserted into and fixed inside the cover plate, and a screw is inserted inside the powder feeding pipe. The screw is driven by a stepper motor at the top of the powder feeding pipe.

[0013] Furthermore, a flow control valve is installed on the liquid feeding pipe.

[0014] Furthermore, the adjustment component includes a hollow shaft arranged in the vertical direction.

[0015] Furthermore, nut seats are fixedly installed at both ends of the hollow shaft, and screws are threaded through the interior of each nut seat.

[0016] Furthermore, the top end of the upper screw is fixedly connected to the support frame, and the bottom end of the lower screw is fixedly connected to the support base.

[0017] Furthermore, a handwheel is fixedly installed on the outside of the hollow shaft body.

[0018] Furthermore, a stirring mechanism is installed inside the reactor cavity, and the stirring mechanism is driven by a stepper motor above the cover plate.

[0019] Compared with the prior art, the present invention, by adopting the above technical solution, has the following advantages:

[0020] In this invention, the powder feeding mechanism and the liquid feeding mechanism are fixedly connected to the support frame, which is fixedly connected to the cover plate. The handwheel drives the hollow shaft to rotate, which drives the two screws to move in opposite directions, raising the cover plate and the powder and liquid feeding mechanisms on top as a whole, thereby opening the top opening of the reactor as a whole, which facilitates deep cleaning and inspection of the reactor interior, as well as modification and replacement of internal components. During the reverse rotation of the handwheel, the cover plate falls down and presses the sealing strip to ensure reliable sealing.

[0021] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the adjustment component.

[0024] In the figure, 1-support frame, 2-reaction vessel, 3-cover plate, 4-adjusting component, 41-hollow shaft, 42-nut seat, 43-screw, 44-handwheel, 5-support base, 6-powder grinding mechanism, 7-feed hopper, 8-connecting pipe, 9-powder feeding pipe, 10-liquid storage tank, 11-liquid feeding pipe, 12-flow control valve, 13-stirring mechanism. Detailed Implementation

[0025] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described with reference to the accompanying drawings.

[0026] like Figure 1 and Figure 2 As shown in the figure, this utility model provides a precision feeding device for the production of non-phenolic thermosensitive colorimetric agents, including a support frame 1, which is fixedly installed above a cover plate 3. The cover plate 3 is fastened to the top opening of the reactor 2. Three evenly distributed support seats 5 are fixedly installed on the periphery of the reactor 2. Adjustment components 4 arranged in the vertical direction are respectively installed between the support seats 5 and the support frame 1.

[0027] A powder grinding mechanism 6 and a liquid material storage tank 10 are fixedly installed above the support frame 1. A feed hopper 7 is installed on the powder grinding mechanism 6, which is used to introduce powder materials.

[0028] A connecting pipe 8 is installed at the outlet of the powder grinding mechanism 6. The bottom end of the connecting pipe 8 is connected to the inclined powder feeding pipe 9, and the inner cavities of the two are connected. The bottom end of the powder feeding pipe 9 is inserted and fixed inside the cover plate 3. A screw is inserted inside the powder feeding pipe 9, and the screw is driven by a stepper motor at the top of the powder feeding pipe 9.

[0029] A stepper motor drives the screw to rotate, thereby accurately conveying the ground material powder to the reactor 2.

[0030] The liquid material storage tank 10 is equipped with a liquid feeding pipe 11 arranged vertically at the discharge port. The bottom end of the liquid feeding pipe 11 is inserted through and fixed inside the cover plate 3. A flow control valve 12 is installed on the liquid feeding pipe 11.

[0031] The liquid material in the liquid material storage tank 10 is precisely transported to the reaction vessel 2 through the liquid feeding pipe 11.

[0032] The adjustment assembly 4 includes a hollow shaft 41 arranged vertically. Nut seats 42 are fixedly installed in both ends of the hollow shaft 41. Screws 43 are inserted inside the nut seats 42. The top end of the upper screw 43 is fixedly connected to the support frame 1, and the bottom end of the lower screw 43 is fixedly connected to the support base 5. A handwheel 44 is fixedly installed on the outside of the hollow shaft 41.

[0033] A sealing strip is provided between the cover plate 3 and the top opening of the reactor 2.

[0034] The reactor 2 is equipped with a stirring mechanism 13, which is driven by a stepper motor above the cover plate 3.

[0035] The specific working principle of this utility model is as follows:

[0036] During feeding, the stepper motor drives the screw to rotate, thereby accurately conveying the ground material powder to the reactor 2. The liquid material in the liquid material storage tank 10 is accurately conveyed to the reactor 2 through the liquid feeding pipe 11. Then, the stepper motor drives the stirring mechanism 13 to mix the materials evenly.

[0037] In this invention, the powder feeding mechanism and the liquid feeding mechanism are fixedly connected to the support frame 1, which is in turn fixedly connected to the cover plate 3. The handwheel 44 drives the hollow shaft 41 to rotate, causing the two screws 43 to move in opposite directions, raising the cover plate 3 and the upper powder and liquid feeding mechanisms as a whole. This opens the top opening of the reactor 2, facilitating deep cleaning and inspection of the reactor 2, as well as modification and replacement of internal components. During the reverse rotation of the handwheel 44, the cover plate 3 falls and presses against the sealing strip, ensuring reliable sealing.

[0038] The above description provides examples of the preferred embodiments of this utility model. Any aspects not detailed herein are common knowledge to those skilled in the art. The scope of protection of this utility model is determined by the claims. Any equivalent modifications based on the technical teachings of this utility model are also within the scope of protection of this utility model.

Claims

1. A precision feeding device for the production of non-phenolic thermosensitive color developers, characterized in that: Includes a support frame (1), which is fixedly installed above the cover plate (3). The cover plate (3) is fastened to the top opening end of the reactor (2). A sealing strip is provided between the cover plate (3) and the top opening end of the reactor (2). Three evenly distributed support seats (5) are fixedly installed around the reactor (2). Adjustment components (4) arranged in the vertical direction are respectively installed between the support seats (5) and the support frame (1). A powder grinding mechanism (6) and a liquid material storage tank (10) are fixedly installed on the support frame (1). A connecting pipe (8) is installed at the outlet of the powder grinding mechanism (6). The bottom end of the connecting pipe (8) is connected to the inclined powder feeding pipe (9), and the inner cavities of the two are connected. The liquid material storage tank (10) is equipped with a liquid feeding pipe (11) arranged vertically at the outlet. The bottom end of the liquid feeding pipe (11) is inserted through and fixed inside the cover plate (3).

2. The precision feeding device for the production of non-phenolic thermosensitive color developers as described in claim 1, characterized in that: The powder grinding mechanism (6) is equipped with a feed hopper (7).

3. The precision feeding device for the production of non-phenolic thermosensitive color developers as described in claim 1, characterized in that: The bottom end of the powder feeding pipe (9) is inserted and fixed inside the cover plate (3). A screw is inserted inside the powder feeding pipe (9), and the screw is driven by a stepper motor at the top of the powder feeding pipe (9).

4. The precision feeding device for the production of non-phenolic thermosensitive color developers as described in claim 1, characterized in that: A flow control valve (12) is installed on the liquid feeding pipe (11).

5. The precision feeding device for the production of non-phenolic thermosensitive colorimetric agents as described in claim 1, characterized in that: The adjustment component (4) includes a hollow shaft (41) arranged in the vertical direction.

6. The precision feeding device for the production of non-phenolic thermosensitive colorimetric agents as described in claim 5, characterized in that: Nut seats (42) are fixedly installed at both ends of the hollow shaft (41), and screws (43) are inserted inside the nut seats (42).

7. The precision feeding device for the production of non-phenolic thermosensitive colorimetric agents as described in claim 6, characterized in that: The top end of the upper screw (43) is fixedly connected to the support frame (1), and the bottom end of the lower screw (43) is fixedly connected to the support base (5).

8. The precision feeding device for the production of non-phenolic thermosensitive colorimetric agents as described in claim 7, characterized in that: A handwheel (44) is fixedly installed on the outside of the hollow shaft (41).

9. The precision feeding device for the production of non-phenolic thermosensitive color developers as described in claim 8, characterized in that: The reactor (2) is equipped with a stirring mechanism (13) inside the cavity. The stirring mechanism (13) is driven by a stepper motor above the cover plate (3).

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