A stirring dosing delivery device

Abstract

The utility model relates to the technical field of stirring, disclose a kind of stirring quantitative conveying device, including rack, the rack bottom is equipped with speed reducer, the rack top is equipped with anti-crystallization stirring assembly;The anti-crystallization stirring assembly includes motor, the motor is installed in the speed reducer bottom, the speed reducer output end is equipped with stirring shaft, the stirring shaft middle part is fixedly connected with leakage baffle disc, the stirring shaft middle part is fixedly connected with rolling bearing, the rack top inboard is fixedly connected with mechanical seal, the rack top is fixedly connected with valve cavity, the valve cavity bottom is fixedly connected with sliding bearing with seal, the valve cavity top inboard is butt joint with upper stirring scraper, the valve cavity bottom inboard is butt joint with lower stirring scraper.The utility model in, start speed reducer motor, speed reducer is rotated by stirring shaft and drives stirring scraper, and the crystallization on the bottom surface and inboard surface of valve cavity is uniformly stirred and scraped to material.

Description

Technical Field

[0001] This utility model relates to the field of stirring technology, and in particular to a stirring quantitative conveying device. Background Technology

[0002] Adipic acid, also known as adipic acid, is one of the most valuable dicarboxylic acids among aliphatic dicarboxylic acids. It is primarily used in the production of nylon 66 and polyurethane foam, as well as plasticizers. Additionally, it is used in the production of high-grade lubricants, food additives, pharmaceutical intermediates, fragrance and flavor control agents, novel single-crystal materials, plastic foaming agents, coatings, pesticides, adhesives, and dyes, among other applications. The adipic acid thickener is a processing device that increases the concentration of crystallized adipic acid slurry by partially extracting the mother liquor; it is one of the key pieces of equipment in an adipic acid plant.

[0003] Common mixing and quantitative conveying devices are mostly single flow regulation structures, mainly composed of a simple valve body, drive components and conveying pipelines. The valve body serves as the material flow channel, and the flow rate is regulated by the valve core opening and closing driven by the drive components. The conveying pipeline is directly connected to the reactor body and downstream equipment.

[0004] Common mixing and quantitative conveying devices lack targeted anti-crystallization mixing and scraping structures, which leads to the accumulation and crystallization of easily crystallizing materials on the bottom and sides of the valve body. In addition, the valve core and valve seat are mostly circular, and the linear relationship between flow rate and opening degree is unstable during adjustment, resulting in poor feeding accuracy. Therefore, a mixing and quantitative conveying device is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a stirring and quantitative conveying device, which aims to improve the problems of easy crystallization and blockage inside the device and unstable linear relationship of the conveying and feeding performance in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A stirring and quantitative conveying device includes a frame, a reducer installed at the bottom of the frame, and an anti-crystallization stirring assembly installed at the top of the frame; The anti-crystallization stirring assembly includes a motor, which is installed at the bottom of the reducer. A stirring shaft is installed at the output end of the reducer. A coupling is sleeved on the outer side of the bottom of the stirring shaft. A leakage baffle is fixedly connected to the middle of the stirring shaft. A rolling bearing is fixedly connected to the middle of the stirring shaft. A mechanical seal is fixedly connected to the inner side of the top of the frame. A valve chamber is fixedly connected to the top of the frame. A sealed sliding bearing is fixedly connected to the bottom of the valve chamber. An upper stirring scraper abuts against the inner side of the top of the valve chamber. A lower stirring scraper abuts against the inner side of the bottom of the valve chamber. As a further description of the above technical solution: Valve seats are fixedly connected to both the left and right sides of the valve cavity. A valve core is installed inside the valve seat. An electric actuator is fixedly connected to the outside of the valve seat. A crystal slurry outlet is fixedly connected to the bottom of the valve seat. A leakage collection pipe assembly is fixedly connected to the bottom of the crystal slurry outlet. As a further description of the above technical solution: The coupling is sleeved on the outside of the output end of the reducer, and the rolling bearing is installed in the middle of the frame; As a further description of the above technical solution: The electric actuator is installed on the outside of the valve core; As a further description of the above technical solution: The upper stirring scraper and the lower stirring scraper are fixedly connected to the top of the stirring shaft, and the stirring shaft is rotatably connected inside the valve cavity. As a further description of the above technical solution: The mechanical seal is installed on the outside of the stirring shaft, and the sealed sliding bearing is installed on the outside of the stirring shaft; As a further description of the above technical solution: The stirring shaft is rotatably connected inside the frame; As a further description of the above technical solution: The leakage collection pipe assembly is fixedly connected to the bottom of the valve seat and the leakage collection pipe assembly is fixedly connected to the top of the frame.

[0007] This utility model has the following beneficial effects: 1. In this utility model, by adopting upper and lower stirring scrapers arranged in a cross shape, combined with side scraper plates, bottom scraper plates and baffle plate structure, the valve cavity can be scraped in all directions to avoid material crystallization and accumulation on the cavity surface. At the same time, the baffle plate promotes material flow, improves stirring uniformity, and ensures smooth conveying.

[0008] 2. In this utility model, the valve core and valve seat adopt a rectangular valve port design. With the help of an adjustable electric rotary actuator to drive the valve core to rotate, linear adjustment can be achieved. The cylindrical surface joint and sealing ring design further reduce rotational resistance and improve adjustment stability and feeding accuracy. Attached Figure Description

[0009] Figure 1 This is a three-dimensional schematic diagram of a stirring and quantitative conveying device proposed in this utility model; Figure 2 This is a schematic diagram of the structure of the stirring shaft of a quantitative conveying device for stirring proposed in this utility model; Figure 3 This is a schematic diagram of the structure of an electric actuator for a mixing and metering conveying device proposed in this utility model; Figure 4 This is a schematic diagram of the valve cavity of a stirring and metering conveying device proposed in this utility model; Figure 5 This is a schematic diagram of the valve seat of a mixing and metering conveying device proposed in this utility model.

[0010] Legend: 1. Motor; 2. Reducer; 3. Coupling; 4. Rolling bearing; 5. Frame; 6. Mechanical seal; 7. Electric actuator; 8. Valve core; 9. Valve seat; 10. Valve cavity; 11. Crystal slurry inlet; 12. Upper agitator scraper; 13. Lower agitator scraper; 14. Leakage collection pipe assembly; 15. Crystal slurry outlet; 16. Sealed sliding bearing; 17. Leakage baffle; 18. Agitator shaft. Detailed Implementation

[0011] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0012] Reference Figures 1-5 The present invention provides an embodiment of a mixing and quantitative conveying device, comprising a frame 5, a reducer 2 installed at the bottom of the frame 5, the frame 5 providing a supporting foundation for the entire device, the reducer 2 fixed at its bottom to match subsequent power transmission requirements, a coupling 3 sleeved on the outside of the output end of the reducer 2, the coupling 3 used to connect the reducer 2 and the mixing shaft 18 to prepare for power transmission, a rolling bearing 4 installed in the middle of the frame 5, and an anti-crystallization mixing assembly installed at the top of the frame 5, the anti-crystallization mixing assembly being the core component for realizing mixing and anti-blocking functions; The anti-crystallization stirring assembly includes a motor 1, which is mounted at the bottom of the reducer 2. The motor 1 provides power to the device and is assembled with the reducer 2 to form a power unit. A stirring shaft 18 is installed at the output end of the reducer 2. The stirring shaft 18 receives the power transmitted by the reducer 2 and is the core transmission component that drives the stirring parts. The stirring shaft 18 adopts a double-seal, double-bearing support structure. The stirring shaft 18 is rotatably connected inside the frame 5. A coupling 3 is sleeved on the outer side of the bottom of the stirring shaft 18. The coupling 3 is sleeved on both the bottom of the stirring shaft 18 and the output end of the reducer 2, thereby realizing the connection between the two. The power connection is as follows: a leakage baffle 17 is fixedly connected to the middle of the stirring shaft 18; the leakage collection pipe assembly consists of pipes, fittings, and valves; the leakage baffle 17 is installed on the stirring shaft 18 between the mechanical seal 6 and the bearing to block possible leakage of liquid and prevent corrosion of the bearing and reducer. A rolling bearing 4 is fixedly connected to the middle of the stirring shaft 18; the rolling bearing is a paired angular contact ball bearing installed at the lower part of the stirring shaft, providing high support rigidity; a mechanical seal 6 is fixedly connected to the inner top of the frame 5; the mechanical seal 6 fits tightly with the stirring shaft 18 to enhance... For sealing, a valve chamber 10 is fixedly connected to the top of the frame 5, and a sealed sliding bearing 16 is fixedly connected to the bottom of the valve chamber 10. The sealing ring is circular, combining bearing and sealing functions to prevent solid or mechanical particles from entering the next stage mechanical seal to the greatest extent. The mechanical seal 6 is installed on the outside of the stirring shaft 18, and the sealed sliding bearing 16 is also installed on the outside of the stirring shaft 18. An upper stirring scraper 12 abuts against the inner side of the top of the valve chamber 10, and a lower stirring scraper 13 abuts against the inner side of the bottom of the valve chamber 10. The scrapers are arranged in a cross shape, ensuring stable working force and effective stirring. The stirring scrapers are uniform, with four side scraper plates in each set, and a bottom scraper plate at the bottom of the lower scraper, enabling all-round scraping of the valve cavity to prevent crystallization on the bottom and inner surfaces of the valve cavity. The stirring scrapers are also equipped with a baffle structure, which helps the material flow and discharge when the scrapers rotate and stir. The upper stirring scraper 12 and the lower stirring scraper 13 are fixedly connected to the top of the stirring shaft 18. The upper and lower stirring scrapers are fixed to the stirring shaft and rotate synchronously with the stirring shaft. The stirring shaft 18 is rotatably connected inside the valve cavity 10. The stirring shaft rotates inside the valve cavity, driving the stirring scrapers to process the material inside the cavity.

[0013] Reference Figure 3 and Figure 5The valve cavity 10 has valve seats 9 fixedly connected to both sides. The valve seats 9 serve as mounting carriers for related components. A valve core 8 is installed inside the valve seat 9. The valve ports of the valve core 8 and valve seat 9 are rectangular, and the mating surfaces are cylindrical. A circular sealing ring provides reliable sealing and low rotational torque. An electric actuator 7 is fixedly connected to the outside of the valve seat 9, providing power for the rotation of the valve core. The electric actuator 7 is installed outside the valve core 8 and controls the rotation of the valve core 8 through adjustment. This enables fully automatic linear feeding. The electric actuator 7 is a high-end adjustment type electric partial rotary actuator, featuring a compact structure, light weight, and a manual mechanism with an automatic clutch. In the event of a power failure, manual operation is performed. The reliable torque sensing system provides overload protection, self-locking function, anti-reverse function, and stable and reliable transmission. The bottom of the valve seat 9 is fixedly connected to a crystal slurry outlet 15, which is connected to the bottom of the valve seat 9 for discharging the processed material. The bottom of the crystal slurry outlet 15 is fixedly connected to a leakage collection pipe assembly 14, which is connected to the bottom of the crystal slurry outlet for collecting leaked liquid. The leakage collection pipe assembly 14 is a separately configured leakage discharge pipe assembly 14 for the purpose of safely discharging leaked liquid. The leakage collection pipe assembly 14 is fixedly connected to the bottom of the valve seat 9 and the top of the frame 5.

[0014] Working principle: First, circulating isolation fluid is introduced into the mechanical seal 6. The continuous supply of fluid lubricates, cools, and cleans the mechanical seal 6, ensuring stable operation of the sealing components. Then, the reducer 2 and motor 1 are started. The power output of motor 1 is reduced and increased in torque by the reducer 2, and then drives the upper stirring scraper 12 and the lower stirring scraper 13 to rotate through the stirring shaft 18. While uniformly stirring the material in the valve cavity 10, it simultaneously scrapes away any crystals that may form on the bottom and inner sides of the valve cavity 10 to prevent material blockage. Finally, the electric actuator 7 is started. After the control system receives the flow signal from the downstream process point flow meter, it controls the action of the electric actuator 7. The electric actuator 7 drives the valve core 8 to rotate to precisely adjust the valve opening angle, thereby realizing the automatic adjustment of the material conveying flow rate and completing the coordinated operation of stirring and quantitative conveying.

[0015] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A mixing and metering conveying device, comprising a frame (5), characterized in that: A speed reducer (2) is installed at the bottom of the frame (5), and an anti-crystallization stirring assembly is installed at the top of the frame (5); The anti-crystallization stirring assembly includes a motor (1), which is installed at the bottom of the reducer (2). A stirring shaft (18) is installed at the output end of the reducer (2). A coupling (3) is sleeved on the outer side of the bottom of the stirring shaft (18). A leakage baffle (17) is fixedly connected to the middle of the stirring shaft (18). A rolling bearing (4) is fixedly connected to the middle of the stirring shaft (18). A mechanical seal (6) is fixedly connected to the inner side of the top of the frame (5). A valve cavity (10) is fixedly connected to the top of the frame (5). A sealed sliding bearing (16) is fixedly connected to the bottom of the valve cavity (10). An upper stirring scraper (12) abuts against the inner side of the top of the valve cavity (10). A lower stirring scraper (13) abuts against the inner side of the bottom of the valve cavity (10).

2. The mixing and metering conveying device according to claim 1, characterized in that: Valve seats (9) are fixedly connected to both sides of the valve cavity (10). A valve core (8) is installed inside the valve seat (9). An electric actuator (7) is fixedly connected to the outside of the valve seat (9). A crystal slurry outlet (15) is fixedly connected to the bottom of the valve seat (9). A leakage collection pipe assembly (14) is fixedly connected to the bottom of the crystal slurry outlet (15).

3. The mixing and metering conveying device according to claim 1, characterized in that: The coupling (3) is sleeved on the outside of the output end of the reducer (2), and the rolling bearing (4) is installed in the middle of the frame (5).

4. The mixing and metering conveying device according to claim 2, characterized in that: The electric actuator (7) is installed on the outside of the valve core (8).

5. The mixing and metering conveying device according to claim 1, characterized in that: The upper stirring scraper (12) and the lower stirring scraper (13) are mounted on the top of the stirring shaft (18), which is rotatably connected inside the valve cavity (10).

6. The mixing and metering conveying device according to claim 1, characterized in that: The mechanical seal (6) is installed on the outside of the stirring shaft (18), and the sealed sliding bearing (16) is installed on the outside of the stirring shaft (18).

7. The mixing and metering conveying device according to claim 1, characterized in that: The stirring shaft (18) is rotatably connected inside the frame (5).

8. The mixing and metering conveying device according to claim 2, characterized in that: The leakage collection tube assembly (14) is fixedly connected to the bottom of the valve seat (9) and the leakage collection tube assembly (14) is fixedly connected to the top of the frame (5).

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