An automatic dosing device for coking inhibitors

By designing an automatic coking inhibitor dosing device with a quantitative feeding mechanism and a storage mechanism, the problem of inaccurate inhibitor addition in traditional devices has been solved, realizing quantitative feeding and accurate addition of inhibitors, thereby improving reaction efficiency and production efficiency.

CN224449570UActive Publication Date: 2026-07-03HANGZHOU QICHUANG ENVIRONMENTAL ENG CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HANGZHOU QICHUANG ENVIRONMENTAL ENG CO LTD
Filing Date
2025-08-06
Publication Date
2026-07-03

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    Figure CN224449570U_ABST
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Abstract

This utility model discloses an automatic coking inhibitor dosing device, relating to the field of inhibitor dosing technology. It includes a support base, with a quantitative dispensing mechanism and a storage mechanism on the top of the support base. The quantitative dispensing mechanism includes a metering box, which is fixedly installed on the top of the support base. An electric cylinder is fixedly installed on the top of the metering box, and a connecting plate is fixedly installed on the telescopic end of the electric cylinder. This utility model, through the design of the electric cylinder, controls its extension operation. The sealing slide plate moves via the transmission of the connecting plate and the cross shaft, drawing a certain amount of inhibitor into the inner cavity of the metering box. Subsequently, the electric cylinder retracts, pushing out all the inhibitor, thus achieving quantitative dosing. This avoids the problem of inhibitor waste caused by users not closing the valve in time. Furthermore, accurate addition of inhibitor ensures the reaction effect and meets production needs.
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Description

Technical Field

[0001] This utility model relates to the field of inhibitor dosing technology, specifically to an automatic dosing device for coking inhibitors. Background Technology

[0002] Coking inhibitors are chemical additives primarily used in high-temperature industrial processes. They reduce coke deposit formation by inhibiting the cracking and polymerization reactions of hydrocarbons on heated surfaces. Their mechanisms of action include blocking free radical chain reactions, altering the chemical structure of coke precursors, or forming a protective film, thereby extending equipment operating cycles, improving thermal efficiency, and reducing maintenance costs. Common types include metal passivators, antioxidants, and surface modifiers, and they are widely used in energy, chemical, and other fields.

[0003] Traditional automatic inhibitor dosing devices deliver inhibitors via pumps, which cannot accurately control the delivery rate. If the user fails to turn off the pumps in time, excessive inhibitors may be added, affecting the reaction results and causing inhibitor waste. Utility Model Content

[0004] The purpose of this invention is to provide an automatic coking inhibitor dosing device to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] An automatic coking inhibitor dosing device includes a support base, a quantitative dispensing mechanism on the top of the support base, and a material storage mechanism on the top of the support base.

[0007] The quantitative dispensing mechanism includes a metering box, which is fixedly installed on the top of the support base. An electric cylinder is fixedly installed on the top of the metering box, and a connecting plate is fixedly installed on the telescopic end of the electric cylinder. A sealing slide plate is slidably connected to the inner wall of the metering box, and a cross shaft is fixedly installed on the side of the sealing slide plate. The end of the cross shaft away from the sealing slide plate is fixedly installed on the side of the connecting plate, and the cross shaft is slidably connected to the metering box.

[0008] Preferably, a solenoid valve one is fixedly connected to the right side of the metering box, and a connecting pipe is threadedly connected to the right side of the solenoid valve one. A solenoid valve two is fixedly connected to the right side of the metering box, and an extension pipe is threadedly connected to the right side of the solenoid valve two.

[0009] Preferably, the end of the extension tube away from the second solenoid valve is threadedly connected to a one-way pipe, and the end of the one-way pipe away from the extension tube is fixedly connected to an atomizing nozzle.

[0010] Preferably, a partition is fixedly installed on the inner wall of the one-way pipe, a rail is fixedly installed on the side of the partition, the end of the rail away from the partition is fixedly installed on the inner wall of the one-way pipe, a slider is slidably connected to the outer wall of the rail, a rubber plug is fixedly installed on the side of the slider, the rubber plug is movably inserted into the inner cavity of the partition, a support block is fixedly installed on the inner wall of the one-way pipe, an elastic element is fixedly installed on the side of the support block, and the end of the elastic element away from the support block is fixedly installed on the side of the slider.

[0011] Preferably, the storage mechanism includes a storage tank, the end of the connecting pipe is threaded to the bottom of the storage tank, a support frame is fixedly installed on the outer wall of the storage tank, the support frame is fixedly installed on the top of the support base, and a transparent strip is fixedly installed on the inner wall of the storage tank.

[0012] Preferably, a support rod is fixedly installed on the top of the support frame, a limit sleeve is rotatably connected to the outer wall of the support rod, a cover plate is movably inserted into the top of the storage tank, and an addition pipe is fixedly connected to the top of the cover plate.

[0013] Preferably, a drive motor is fixedly installed on the top of the cover plate, the output shaft of the drive motor extends to the bottom of the cover plate and is fixedly connected to a rotating shaft, and blades are fixedly installed on the bottom of the rotating shaft.

[0014] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0015] By controlling the extension of the electric cylinder, the sealing slide can be moved through the transmission of the connecting plate and the cross shaft, drawing a certain amount of inhibitor into the inner cavity of the metering box. Then, the electric cylinder is controlled to retract, pushing out all of the inhibitor, thus achieving the function of quantitative delivery. This avoids the problem of inhibitor waste caused by the user not closing the box in time. At the same time, by accurately adding inhibitor, the reaction effect can be guaranteed, meeting the needs of production. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the quantitative dispensing mechanism of this utility model;

[0018] Figure 3 This is a cross-sectional structural diagram of the metering box of this utility model;

[0019] Figure 4 This is a schematic diagram of the internal structure of the unidirectional pipe of this utility model;

[0020] Figure 5This is a schematic diagram of the material storage mechanism of this utility model.

[0021] In the diagram: 1. Support base; 2. Quantitative dispensing mechanism; 21. Metering box; 211. Electric cylinder; 212. Connecting plate; 213. Cross shaft; 214. Sealing slide plate; 22. Solenoid valve one; 23. Connecting pipe; 24. Solenoid valve two; 25. Extension pipe; 26. One-way pipe; 261. Partition plate; 262. Rail rod; 263. Sliding block; 264. Rubber plug; 265. Support block; 266. Elastic element; 27. Atomizing nozzle; 3. Storage mechanism; 31. Storage tank; 32. Support frame; 33. Transparent strip; 34. Support rod; 35. Limiting sleeve; 36. Cover plate; 37. Adding pipe; 38. Drive motor; 39. Rotating shaft; 391. Blade. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to embodiments:

[0023] like Figures 1-5 As shown, this utility model provides an automatic coking inhibitor dosing device, including a support base 1, a quantitative dispensing mechanism 2 provided on the top of the support base 1, and a material storage mechanism 3 provided on the top of the support base 1.

[0024] The quantitative dispensing mechanism 2 includes a metering box 21, which is fixedly installed on the top of the support base 1. An electric cylinder 211 is fixedly installed on the top of the metering box 21, and a connecting plate 212 is fixedly installed on the telescopic end of the electric cylinder 211. A sealing slide plate 214 is slidably connected to the inner wall of the metering box 21, and a cross shaft 213 is fixedly installed on the side of the sealing slide plate 214. The end of the cross shaft 213 away from the sealing slide plate 214 is fixedly installed on the side of the connecting plate 212. The cross shaft 213 is slidably connected to the metering box 21. The electric cylinder 211 is controlled to extend, and the sealing slide plate 214 is moved through the transmission of the connecting plate 212 and the cross shaft 213 to extract a certain amount of inhibitor into the inner cavity of the metering box 21. Then, the electric cylinder 211 is controlled to retract, which can push out all of the inhibitor, thus realizing the quantitative dispensing function. The amount of inhibitor can be controlled by controlling the distance of displacement of the sealing slide plate 214 driven by the electric cylinder 211.

[0025] Furthermore, such as Figure 2As shown, a solenoid valve 22 is fixedly connected to the right side of the metering box 21. A connecting pipe 23 is threadedly connected to the right side of the solenoid valve 22. A solenoid valve 24 is fixedly connected to the right side of the metering box 21. An extension pipe 25 is threadedly connected to the right side of the solenoid valve 24. In the initial state, both solenoid valves 22 and 24 are closed. Before the control cylinder 211 extends and extracts the inhibitor into the metering box 21, solenoid valve 22 is opened first and closed after extraction. Before discharging the inhibitor inside the metering box 21, solenoid valve 24 is opened first and closed after discharge.

[0026] Furthermore, such as Figure 2 As shown, the end of the extension tube 25 away from the solenoid valve 24 is threadedly connected to a one-way pipe 26, and the end of the one-way pipe 26 away from the extension tube 25 is fixedly connected to an atomizing nozzle 27. Both ends of the extension tube 25 are detachable, and users can replace the extension tube 25 with different lengths according to production needs, which facilitates the installation of the one-way pipe 26 and the atomizing nozzle 27.

[0027] Furthermore, such as Figure 4 As shown, a partition 261 is fixedly installed on the inner wall of the one-way pipe 26. A rail rod 262 is fixedly installed on the side of the partition 261. The end of the rail rod 262 away from the partition 261 is fixedly installed on the inner wall of the one-way pipe 26. A slider 263 is slidably connected to the outer wall of the rail rod 262. A rubber plug 264 is fixedly installed on the side of the slider 263. The rubber plug 264 is movably inserted into the inner cavity of the partition 261. A support block 265 is fixedly installed on the inner wall of the one-way pipe 26. An elastic element 266 is fixedly installed on the side of the support block 265. The end of the elastic element 266 away from the support block 265 is fixed. Installed on the side of slider 263, in the initial state, the elastic force of elastic element 266 can drive slider 263 to slide on the outer wall of rail rod 262, causing rubber plug 264 to be inserted into the interior of partition 261 to seal it, so that the inner cavity of one-way pipe 26 is in a closed state, avoiding the problem of inhibitor leakage inside extension tube 25. When electric cylinder 211 retracts and pushes out the inhibitor inside metering box 21, the pressure pushes slider 263 as a whole, which can cause rubber plug 264 to move away from partition 261, so that the inner cavity of one-way pipe 26 is in an open state, facilitating the passage of inhibitor.

[0028] Furthermore, such as Figure 5 As shown, the storage mechanism 3 includes a storage tank 31. The end of the connecting pipe 23 is threaded to the bottom of the storage tank 31. A support frame 32 is fixedly installed on the outer wall of the storage tank 31. The support frame 32 is fixedly installed on the top of the support base 1. A transparent strip 33 is fixedly installed on the inner wall of the storage tank 31. The storage tank 31 is used to store inhibitors. The design of the transparent strip 33 makes it convenient for users to observe the liquid level of the inhibitor inside the storage tank 31.

[0029] Furthermore, such as Figure 5 As shown, a support rod 34 is fixedly installed on the top of the support frame 32. A limiting sleeve 35 is rotatably connected to the outer wall of the support rod 34. A cover plate 36 is movably inserted into the top of the storage tank 31. An adding tube 37 is fixedly connected to the top of the cover plate 36. A bolt is threadedly connected to the outer wall of the limiting sleeve 35. The threaded end of the bolt abuts against the outer wall of the support rod 34, locking the limiting sleeve 35 in place. The limiting sleeve 35 is used to limit the cover plate 36 to the top of the storage tank 31. If it is necessary to clean the inner cavity of the storage tank 31, loosen the bolt on the limiting sleeve 35, and then rotate the limiting sleeve 35 out from the top of the cover plate 36. The cover plate 36 can then be removed from the top of the storage tank 31 for cleaning.

[0030] Furthermore, such as Figure 5 As shown, a drive motor 38 is fixedly installed on the top of the cover plate 36. The output shaft of the drive motor 38 extends to the bottom of the cover plate 36 and is fixedly connected to a rotating shaft 39. A blade 391 is fixedly installed at the bottom of the rotating shaft 39. When the inhibitor is stored in the inner cavity of the storage tank 31 for a long time, the drive motor 38 is controlled to work, which can drive the rotating shaft 39 to rotate and synchronously drive the blade 391 to stir the inhibitor, thereby achieving the function of preventing sedimentation and ensuring the effectiveness of the inhibitor.

[0031] The working principle of this automatic coking inhibitor dosing device will be explained in detail below.

[0032] like Figures 1-5 As shown, during use, the electric cylinder 211 extends, driving the sealing slide plate 214 to move via the transmission of the connecting plate 212 and the cross shaft 213, drawing a certain amount of inhibitor into the inner cavity of the metering box 21. Then, the electric cylinder 211 retracts, pushing out all of the inhibitor, thus achieving the function of quantitative delivery. The inhibitor is output from the end of the atomizing nozzle 27. Before extending the electric cylinder 211 to draw the inhibitor into the metering box 21, the first solenoid valve 22 is opened, and closed after drawing. Before discharging the inhibitor inside the metering box 21, the second solenoid valve 24 is opened, and closed after discharging. When the inhibitor is stored in the inner cavity of the storage tank 31 for a long time, the drive motor 38 is controlled to work, driving the blades 391 to stir the inhibitor.

[0033] It is worth noting that this solution aims to protect the physical structure, but does not protect the circuit and software control. The proposed processing circuit is merely a supplementary explanation of the feasibility and authenticity of this utility model, and this utility model does not seek protection for the algorithm and circuit control technology. It is important to emphasize that although this solution does not elaborate on the electronic control program, those skilled in the art can readily understand and apply it based on their professional knowledge.

[0034] It should be noted that, in the description of this disclosure, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joint" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0035] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A coking inhibitor automatic dosing device, characterized by: Includes a support base, the top of which is provided with a quantitative feeding mechanism and a material storage mechanism; The quantitative dispensing mechanism includes a metering box, which is fixedly installed on the top of the support base. An electric cylinder is fixedly installed on the top of the metering box, and a connecting plate is fixedly installed on the telescopic end of the electric cylinder. A sealing slide plate is slidably connected to the inner wall of the metering box, and a cross shaft is fixedly installed on the side of the sealing slide plate. The end of the cross shaft away from the sealing slide plate is fixedly installed on the side of the connecting plate, and the cross shaft is slidably connected to the metering box.

2. The automatic coking inhibitor dosing device according to claim 1, characterized in that: A solenoid valve is fixedly connected to the right side of the metering box, and a connecting pipe is threaded to the right side of the solenoid valve. A solenoid valve is fixedly connected to the right side of the metering box, and an extension pipe is threaded to the right side of the solenoid valve.

3. The automatic coking inhibitor dosing device according to claim 2, characterized in that: The end of the extension tube away from the second solenoid valve is threadedly connected to a one-way pipe, and the end of the one-way pipe away from the extension tube is fixedly connected to an atomizing nozzle.

4. The automatic coking inhibitor dosing device according to claim 3, characterized in that: A baffle is fixedly installed on the inner wall of the one-way pipe. A rail is fixedly installed on the side of the baffle. The end of the rail away from the baffle is fixedly installed on the inner wall of the one-way pipe. A slider is slidably connected to the outer wall of the rail. A rubber plug is fixedly installed on the side of the slider. The rubber plug is movably inserted into the inner cavity of the baffle. A support block is fixedly installed on the inner wall of the one-way pipe. An elastic element is fixedly installed on the side of the support block. The end of the elastic element away from the support block is fixedly installed on the side of the slider.

5. The automatic coking inhibitor dosing device according to claim 2, characterized in that: The storage mechanism includes a storage tank, the end of the connecting pipe is threaded to the bottom of the storage tank, a support frame is fixedly installed on the outer wall of the storage tank, the support frame is fixedly installed on the top of the support base, and a transparent strip is fixedly installed on the inner wall of the storage tank.

6. The coking inhibitor automatic dosing device according to claim 5, characterized in that: A support rod is fixedly installed on the top of the support frame, and a limit sleeve is rotatably connected to the outer wall of the support rod. A cover plate is movably inserted into the top of the storage tank, and an addition pipe is fixedly connected to the top of the cover plate.

7. The automatic dosing device for coking inhibitor according to claim 6, characterized in that: A drive motor is fixedly installed on the top of the cover plate, and the output shaft of the drive motor extends to the bottom of the cover plate and is fixedly connected to a rotating shaft. A blade is fixedly installed on the bottom of the rotating shaft.