Feeding device of blender

Abstract

The utility model belongs to the technical field of chemical equipment, and discloses a feeding device of a blender, which comprises a feeding port arranged at the top end of the blender, and a rotating groove arranged below the feeding port. The rotating groove comprises an annular bottom plate; the bottom plate is coaxial with the blender; discharge holes are uniformly distributed in the bottom plate; the rotating groove further comprises an inner side plate and an outer side plate which are fixedly connected to the bottom plate, and the distance between the inner side plate and the outer side plate is gradually reduced from top to bottom. According to the utility model, powder and a solvent can be quickly and uniformly mixed.

Description

Technical Field

[0001] This utility model belongs to the field of chemical equipment technology, specifically relating to a mixer feeding device. Background Technology

[0002] Maleic anhydride, also known as maleic anhydride, maleic acid anhydride, 2,5-furandione, etc., is a colorless needle-like or platy crystal of the orthorhombic system, soluble in ethanol, diethyl ether, and acetone. The production of γ-butanediol using maleic anhydride hydrogenation is a commonly used process, typically involving maleic anhydride dissolution, hydrogenation, separation, and distillation. Before the hydrogenation reaction, maleic anhydride needs to be mixed with a solvent to prepare a mixed solution. During mixing, due to the poor stability of maleic anhydride, if it is added all at once, it can cause localized accumulation, resulting in excessively high local concentrations of the maleic anhydride solution. This increases the occurrence of side reactions and affects the selectivity of subsequent hydrogenation reactions. Therefore, stable and uniform addition and mixing are necessary when preparing the maleic anhydride solution. Utility Model Content

[0003] The purpose of this invention is to provide a mixer feeding device that enables rapid and uniform mixing of maleic anhydride crystals and solvent.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A mixing feeder includes a feed port at the top of the mixing machine and a rotating groove below the feed port, the rotating groove being fixedly connected to the mixing shaft of the mixing machine; the rotating groove includes an annular bottom plate, the bottom plate being coaxial with the mixing machine; discharge holes are evenly distributed on the bottom plate; the rotating groove also includes an inner side plate and an outer side plate fixedly connected to the bottom plate, the distance between the inner side plate and the outer side plate gradually decreasing from top to bottom.

[0006] Furthermore, an adjusting plate is rotatably connected to the base plate. The adjusting plate is a ring-shaped structure coaxial with the base plate. Adjusting holes that match the discharge holes are evenly distributed on the adjusting plate. An arc-shaped rack is fixedly connected to the adjusting plate, and the arc-shaped rack is meshed with an adjusting gear.

[0007] Furthermore, a dispersion hood is provided below the rotating trough, and the dispersion hood is fixedly connected to the mixer; the dispersion hood is an inverted trumpet shape; the dispersion hood is coaxial with the rotating trough; and the dispersion hood is evenly distributed with material dispersing holes.

[0008] Furthermore, a liquid addition pipe is provided below the dispersion hood. The liquid addition pipe is fixedly connected to the mixer and is a ring-shaped structure coaxial with the mixer. Spray nozzles are evenly distributed on the liquid addition pipe, and the spray nozzles are all positioned directly opposite the stirring shaft of the mixer.

[0009] Furthermore, the dispersing hood is equipped with a hammer, which includes a hammer head that cooperates with the dispersing hood and a hammer handle that is fixedly connected to the hammer head; the hammer handle is rotatably connected to the dispersing hood via a rotating shaft, and a tension spring is connected between the hammer handle and the dispersing hood; a fixing rod that cooperates with the hammer handle is fixedly connected to the stirring shaft of the mixer.

[0010] Furthermore, the inner wall of the mixer and the stirring shaft are both coated with PFA or PTFE.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. This application provides a rotating groove coaxial with the mixer, which can carry maleic anhydride crystals from the feed port to other positions of the mixer for dispersion, so that the maleic anhydride crystals can be evenly distributed in the mixer; the distance between the inner side plate and the outer side plate gradually decreases from top to bottom, which can make the material in the feed port fall stably between the inner side plate and the outer side plate, and reduce the accumulation of material on the bottom plate of the rotating groove.

[0013] 2. By rotating the adjusting plate, the area of ​​the base plate blocking the adjusting hole can be adjusted, thereby adjusting the size of the adjusting hole so that the flow rate of the material falling into the adjusting hole can match the flow rate of the material at the feeding port, so that the maleic anhydride crystals can completely flow out of the adjusting hole after entering the rotating tank and rotating once.

[0014] 3. A dispersion hood is installed to move the maleic anhydride crystals falling from the rotating trough towards the center of the mixer. The powder is further dispersed through the dispersing holes, ensuring a uniform distribution within the mixer. A liquid addition pipe and nozzle ensure even solvent distribution, and the nozzle's placement below the dispersion hood guarantees uniform contact between the solvent and the maleic anhydride crystals, achieving rapid and uniform mixing. A fixing rod drives the hammer handle to rotate. After detaching from the fixing rod, the hammer handle rotates back to its original position under the action of a tension spring, striking the dispersion hood and causing the material on it to fall steadily. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the internal structure of the mixer in Embodiment 1 of this utility model;

[0016] Figure 2 This is a schematic diagram of the rotating groove structure of Embodiment 1 of this utility model;

[0017] Figure 3 This is a schematic diagram of the discharge hole and adjustment hole structure of Embodiment 1 of this utility model;

[0018] Figure 4 This is a schematic diagram of the striking hammer structure in Embodiment 2 of this utility model;

[0019] Figure 5 This is a schematic diagram of the internal structure of the mixer in Embodiment 2 of this utility model.

[0020] In the diagram: 1. Feed port; 2. Bottom plate; 3. Discharge hole; 4. Inner side plate; 5. Outer side plate; 6. Crossbar; 7. Adjusting plate; 8. Adjusting hole; 9. Arc rack; 10. Adjusting gear; 11. Drive motor; 12. Dispersion cover; 13. Connecting plate; 14. Dispersion hole; 15. Hammer head; 16. Hammer handle; 17. Support rod; 18. Tension spring; 19. Fixing rod; 20. Connecting rod; 21. Liquid filling pipe; 22. Nozzle; 23. Input pipe; 24. Stirring shaft; 25. Air dispersing pipe; 26. Air dispersing hole; 27. Air filling pipe. Detailed Implementation

[0021] Example 1

[0022] A mixing feeder device, such as Figures 1-3 As shown, the mixer includes a feed port 1 at the top, a rotating groove below the feed port 1, and the rotating groove is fixedly connected to the mixing shaft 24 of the mixer. Figure 2 As shown, the rotating trough includes an annular base plate 2, which is coaxial with the mixer. The base plate 2 is evenly distributed with discharge holes 3, which are circumferentially distributed around the axis of the base plate 2. The rotating trough also includes an inner side plate 4 and an outer side plate 5 fixedly connected to the base plate 2. The inner side plate 4 and the outer side plate 5 are both located above the base plate 2. The bottom end of the inner side plate 4 is fixedly connected to the inner ring edge of the base plate 2, and the bottom end of the outer side plate 5 is fixedly connected to the outer ring edge of the base plate 2. The distance between the inner side plate 4 and the outer side plate 5 gradually decreases from top to bottom. A crossbar 6 is fixedly connected between the inner side plate 4 and the stirring shaft 24.

[0023] like Figures 2-3 As shown, an adjusting plate 7 is rotatably connected to the base plate 2. The adjusting plate 7 is a circular structure coaxial with the base plate 2. Adjusting holes 8 that cooperate with the discharge holes 3 are evenly distributed on the adjusting plate 7. The adjusting holes 8 correspond one-to-one with the discharge holes 3. Each adjusting hole 8 is connected to a discharge hole 3. The adjusting holes 8 are distributed circumferentially around the axis of the adjusting plate 7. An arc-shaped rack 9 coaxial with the adjusting plate 7 is fixedly connected to the adjusting plate 7. An adjusting gear 10 is meshed with the arc-shaped rack 9. The adjusting gear 10 is connected to a drive motor 11. The drive motor 11 is fixedly connected to the inner side plate 4.

[0024] like Figure 1 As shown, a dispersion cover 12 is provided below the rotating groove. The dispersion cover 12 is fixedly connected to the mixer through a vertically arranged connecting plate 13. The dispersion cover 12 has an inverted trumpet-shaped structure. The dispersion cover 12 is coaxial with the rotating groove. Dispersion holes 14 are evenly distributed on the dispersion cover 12.

[0025] like Figure 1 As shown, a liquid addition pipe 21 is provided below the dispersion hood 12. The liquid addition pipe 21 is fixedly connected to the mixer. The liquid addition pipe 21 is a circular structure coaxial with the mixer. A vertical input pipe 23 is connected to the liquid addition pipe 21. Nozzles 22 are evenly distributed on the liquid addition pipe 21. The nozzles 22 are all positioned directly opposite the stirring shaft 24 of the mixer. The nozzles 22 are distributed in a circle around the stirring shaft 24.

[0026] During feeding, the driving stirring shaft 24 rotates, which in turn drives the rotating tank to rotate. Maleic anhydride crystal powder is added to the feeding port 1, and solvent is added to the input pipe 23. The powder falls from the feeding port 1 into the rotating tank; then, the powder in the rotating tank falls through the discharge port 3 and the regulating port 8 onto the dispersion hood 12. The driving motor 11 drives the regulating plate 7 to rotate, adjusting the size of the regulating port 8 so that the flow rate of the material falling through the regulating port 8 matches the flow rate of the material at the feeding port 1. After rotating once in the rotating tank, the powder completely flows out through the regulating port 8 and falls evenly onto the dispersion hood 12. The powder on the dispersion hood 12 slides down along the dispersion hood 12 and falls out through the dispersing port 14 during the sliding process. The solvent and powder mix quickly and evenly, allowing the raw materials to react fully.

[0027] Example 2

[0028] This embodiment is the same as embodiment 1 in other parts, except that, as Figures 4-5 As shown, a pair of hammers are provided on the dispersion hood 12. Each hammer includes a hammer head 15 that cooperates with the dispersion hood 12. The hammer head 15 is located at the upper outer edge of the dispersion hood 12. A horizontal hammer handle 16 is fixedly connected to the hammer head 15. The end of the hammer handle 16 away from the hammer head 15 is located in the middle of the dispersion hood 12. A cylindrical support rod 17 is rotatably connected to the hammer handle 16 via a rotating shaft. The hammer handle 16 is rotatably arranged around the support rod 17. The support rod 17 is parallel to the stirring shaft 24. The bottom end of the support rod 17 is fixedly connected to the dispersion hood 12. A tension spring 18 is connected between the hammer handle 16 and the dispersion hood 12. The connection between the tension spring 18 and the hammer handle 16 is located between the hammer head 15 and the support rod 17. A fixing rod 19 that cooperates with the hammer handle 16 is fixedly connected to the stirring shaft 24 of the mixer. The fixing rod 19 is parallel to the stirring shaft 24. A connecting rod 20 is fixedly connected between the fixing rod 19 and the stirring shaft 24. A venting pipe 25 is installed below the dispersion hood 12, and the venting pipe 25 is fixedly connected to the mixer. The venting pipe 25 is a spiral pipe coaxial with the mixer, and venting holes 26 are evenly distributed on the venting pipe 25, all of which are positioned directly opposite the stirring shaft. An air supply pipe 27 is also connected to the venting pipe 25. Figure 4 As shown, when the stirring shaft 24 rotates in the direction of the arrow, it drives the fixed rod 19 to rotate. When the fixed rod 19 contacts the hammer handle 16, it drives the hammer handle 16 to rotate around the support rod 17, and the hammer head 15 leaves the dispersion hood 12, causing the tension spring 18 to extend. When the fixed rod 19 disengages from the hammer handle 16, the tension spring 18 drives the hammer handle 16 to reverse and reset, and the hammer head 15 strikes the dispersion hood 12, causing the dispersion hood 12 to vibrate, thus stabilizing the powder as it slides down. After the powder and solvent are mixed, it continues to fall to the bottom of the mixer, and the gas in the gas diffuser 25 is released from the gas diffuser hole 26, promoting rapid and uniform mixing of solid and liquid raw materials.

Claims

1. A material charging device for a mixer, comprising a charging port provided at a top end of the mixer, characterized in that, The feeding opening is provided below with a rotating groove which is fixedly connected with the stirring shaft of the mixer; the rotating groove comprises a circular bottom plate which is coaxial with the mixer; the bottom plate is uniformly provided with discharge holes; the rotating groove further comprises an inner side plate and an outer side plate which are fixedly connected on the bottom plate, and the distance between the inner side plate and the outer side plate gradually decreases from top to bottom.

2. The blender charging device of claim 1, wherein, An adjusting plate is rotatably connected on the bottom plate, and the adjusting plate is a circular ring structure coaxial with the bottom plate; the adjusting plate is uniformly provided with adjusting holes matched with the discharge holes; the adjusting plate is fixedly connected with an arc-shaped rack, and the arc-shaped rack is engagedly connected with an adjusting gear.

3. The blender charging device of claim 2, wherein, The rotating groove is provided below with a dispersing cover which is fixedly connected in the mixer; the dispersing cover is in the shape of an inverted horn; the dispersing cover is coaxial with the rotating groove; the dispersing cover is uniformly provided with dispersing holes.

4. The blender charging device of claim 3, wherein, The dispersing cover is provided below with a liquid adding pipe which is fixedly connected with the mixer, and the liquid adding pipe is a circular ring structure coaxial with the mixer; the liquid adding pipe is uniformly provided with nozzles which are all arranged opposite to the stirring shaft of the mixer.

5. The blender charging device of claim 4, wherein, The dispersing cover is provided with a knocking hammer which comprises a hammer head matched with the dispersing cover and a hammer handle fixedly connected with the hammer head; the hammer handle is rotatably connected with the dispersing cover through a rotating shaft, and a tension spring is connected between the hammer handle and the dispersing cover; the stirring shaft of the mixer is fixedly connected with a fixing rod matched with the hammer handle.

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