Mechanical stirring device for mixing and homogenizing raw materials of methanol-to-hydrogen device

Abstract

The invention provides a methanol hydrogen production device raw material mixing homogenization mechanical stirring device, and relates to the technical field of mechanical stirring devices.The methanol hydrogen production device raw material mixing homogenization mechanical stirring device comprises a stirring tank, a stirring motor is installed at the top of the stirring tank, a discharging pipe is installed at the bottom of the stirring tank, and a weighing mechanism is installed at the top end of the stirring tank; the weighing mechanism comprises a supporting rod, a methanol weighing tank and a water weighing tank, the supporting rod is installed on the top face of the stirring tank, the top end of the supporting rod is rotationally connected with a lever, and the methanol weighing tank and the water weighing tank are rotationally connected to the two ends of the lever correspondingly; the bottom end of the methanol weighing tank and the bottom end of the water weighing tank are connected with the stirring tank through hoses, a sliding rail is arranged on the surface of the lever, and a balancing weight is slidably connected into the sliding rail. Signal transmission delay and error accumulation are reduced, and the matching response speed is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical stirring devices, and particularly to a mechanical stirring device for uniform mixing of raw materials in a methanol-to-hydrogen production device. Background Art

[0002] Mechanical stirring devices are key equipment for material mixing, reaction intensification, and mass and heat transfer in fields such as chemical engineering, energy, and pharmaceuticals. Their core function is to promote the uniform mixing of different components or maintain the homogeneity of the reaction system through mechanical motion. In the process of methanol-to-hydrogen production, mechanical stirring ensures a constant and uniform ratio of methanol to water, thereby improving the efficiency and stability of subsequent electrolytic hydrogen production.

[0003] Chinese Patent Publication No. CN220609972U discloses an automatic proportioning and mixing device for raw materials in methanol-to-hydrogen production, which includes a mixing tank. The upper end of the mixing tank is covered with a tank cover. A stirring motor is installed in the middle of the tank cover. A stirring shaft is arranged in the mixing tank, and several stirring blades are installed on the stirring shaft. The output shaft of the stirring motor is connected to the stirring shaft. A methanol weighing tank is arranged on one side of the stirring motor, and a water weighing tank is arranged on the other side of the stirring motor. The methanol weighing tank and the water weighing tank are respectively installed on the tank cover. Liquid level sensors are respectively installed in the methanol weighing tank and the water weighing tank. Feeding pipes are respectively connected to the upper ends of the methanol weighing tank and the water weighing tank, and discharging pipes are respectively connected to the lower ends of the methanol weighing tank and the water weighing tank. The discharging pipes respectively extend into the interior of the mixing tank. Valves are respectively installed on the feeding pipes and the discharging pipes. A discharging port is arranged at the lower end of the mixing tank, and a valve is installed at the discharging port.

[0004] In this existing design, although the automatic and accurate weighing and mixing of methanol and water can be achieved, improving the production efficiency of the methanol-to-hydrogen production system, this device relies on an electronic liquid level sensor to monitor the raw material quantity. The sensor is easily affected by liquid foam or impurities, resulting in misjudgment and requiring frequent calibration and maintenance, which easily affects the preparation effect of the raw materials.

[0005] Therefore, a mechanical stirring device for uniform mixing of raw materials in a methanol-to-hydrogen production device is designed to solve the above problems. Summary of the Invention

[0006] To solve the problems raised in the above background art, the present invention provides a mechanical stirring device for uniform mixing of raw materials in a methanol-to-hydrogen production device, which has the characteristic of realizing weighing through a pure mechanical linkage rod.

[0007] The present invention adopts the following technical solution: a mechanical stirring device for uniform mixing of raw materials in a methanol-to-hydrogen production device, including a stirring tank. A stirring motor is installed at the top of the stirring tank, and a discharge pipe is installed at the bottom of the stirring tank. A weighing mechanism is installed at the top end of the stirring tank. The weighing mechanism includes a support rod, a methanol weighing tank, and a water weighing tank. The support rod is installed on the top surface of the stirring tank. The top end of the support rod is rotatably connected to a lever. The methanol weighing tank and the water weighing tank are respectively rotatably connected to both ends of the lever. The bottom ends of the methanol weighing tank and the water weighing tank are both connected to the stirring tank through hoses. A slide rail is provided on the surface of the lever, and a counterweight block is slidably connected inside the slide rail.

[0008] Preferably, for the mechanical stirring device for uniform mixing of raw materials in the methanol-to-hydrogen production device of the present invention, feed pipes are installed at the bottom ends of the methanol weighing tank and the water weighing tank, and valves are installed between the hoses and the methanol weighing tank and the water weighing tank.

[0009] Preferably, for the mechanical stirring device for uniform mixing of raw materials in the methanol-to-hydrogen production device of the present invention, the support rod is located at the center of the top surface of the stirring tank, and the top end of the support rod is connected to the center of the lever.

[0010] Preferably, for the mechanical stirring device for uniform mixing of raw materials in the methanol-to-hydrogen production device of the present invention, a magnet A is installed on the inner wall of the slide rail, and a magnet B is installed on the inner wall of the counterweight block.

[0011] Preferably, for the mechanical stirring device for uniform mixing of raw materials in the methanol-to-hydrogen production device of the present invention, the opposite sides of the magnet A and the magnet B are respectively the S pole and the N pole.

[0012] Preferably, for the mechanical stirring device for uniform mixing of raw materials in the methanol-to-hydrogen production device of the present invention, a scale groove is provided on the top surface of the lever. The number of the scale grooves is several, and several scale grooves are evenly distributed on the top surface of the lever.

[0013] Preferably, for the mechanical stirring device for uniform mixing of raw materials in the methanol-to-hydrogen production device of the present invention, a visual ratio mechanism is installed at the top of the stirring tank. The visual ratio mechanism includes a column installed on the top surface of the stirring tank. The top end of the column is rotatably connected to a gear. A pointer is installed on the top surface of the gear. A connecting block is installed on the surface of the column, and a scale disk is installed on the surface of the connecting block.

[0014] Preferably, for the mechanical stirring device for uniform mixing of raw materials in the methanol-to-hydrogen production device of the present invention, a rack is installed on the side surface of the counterweight block, and the rack and the gear are meshed with each other.

[0015] Preferably, for the mechanical stirring device for raw material mixing homogenization of the methanol hydrogen production device of the present invention, the scale disk is located between the pointer and the gear, and the pointer penetrates through the center of the scale disk.

[0016] Compared with the prior art, the advantages and positive effects of the present invention are as follows: By integrating the weighing mechanism with the stirring tank, the ratio of methanol to water is dynamically adjusted using the lever balance principle, the weight change is monitored in real time during the raw material injection process, and the weight deviation of the two containers is automatically calibrated using the sliding counterweight block to ensure accurate mixing ratio. The physical balance mechanism of the lever structure replaces the traditional electronic sensor, reducing signal transmission delay and error accumulation, improving the ratio response speed. The cooperation of the slide rail and the magnet makes the movement of the counterweight block more stable, avoiding mechanical vibration interference. At the same time, the scale groove design facilitates visual monitoring of the adjustment process, and the visual pointer and gear linkage convert the counterweight position into a visual signal, enabling the operator to quickly judge the ratio state and reducing the need for manual intervention. The overall design achieves self-balancing through mechanical linkage, reducing energy consumption and maintenance costs. Brief Description of the Drawings

[0017] Figure 1 Schematic diagram of the mechanical stirring device for raw material mixing homogenization of the methanol hydrogen production device of the present invention;

[0018] Figure 2 Schematic diagram of the weighing mechanism of the mechanical stirring device for raw material mixing homogenization of the methanol hydrogen production device of the present invention;

[0019] Figure 3 For the mechanical stirring device for raw material mixing homogenization of the methanol hydrogen production device of the present invention Figure 2 Enlarged view at A in;

[0020] Figure 4 Schematic diagram of the counterweight block of the mechanical stirring device for raw material mixing homogenization of the methanol hydrogen production device of the present invention;

[0021] Figure 5 Rear view of the mechanical stirring device for raw material mixing homogenization of the methanol hydrogen production device of the present invention;

[0022] Figure 6 For the mechanical stirring device for raw material mixing homogenization of the methanol hydrogen production device of the present invention Figure 5 Enlarged view at B in;

[0023] Figure 7 Schematic diagram of the lower part of the stirring shaft of the present invention.

[0024] Legend Explanation:

[0025] 1. Stirring tank; 2. Stirring motor; 3. Discharge pipe; 4. Weighing mechanism; 401. Support rod; 402. Methanol weighing tank; 403. Water weighing tank; 404. Lever; 405. Slide rail; 406. Counterweight; 407. Feed pipe; 408. Magnet A; 409. Magnet B; 410. Scale groove; 411. Rack; 5. Hose; 6. Visual ratio mechanism; 601. Column; 602. Gear; 603. Pointer; 604. Connecting block; 605. Dial; 21. Stirring shaft; 22. Blade; 23. Connecting shaft; 24. Second bevel gear; 25. First bevel gear; 26. Support leg. Detailed implementation mode

[0026] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0027] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the present invention is not limited by the specific embodiments disclosed in the following specification.

[0028] Embodiment 1

[0029] In the prior art, the existing automatic proportioning and mixing device for raw materials for methanol hydrogen production includes a stirring tank 1. A stirring motor 2 is installed on the top of the stirring tank 1, and a discharge pipe 3 is installed at the bottom of the stirring tank 1. This mechanical stirring device also has a stirring shaft arranged in the mixing tank, and a number of stirring blades are installed on the stirring shaft. The output shaft of the stirring motor is connected to the stirring shaft. There is a methanol weighing tank on one side of the stirring motor, and a water weighing tank on the other side of the stirring motor. The methanol weighing tank and the water weighing tank are respectively installed on the tank cover. Liquid level sensors are respectively installed in the methanol weighing tank and the water weighing tank. The upper ends of the methanol weighing tank and the water weighing tank are respectively connected with feed pipes, and the lower ends of the methanol weighing tank and the water weighing tank are respectively connected with discharge pipes. The discharge pipes respectively extend into the interior of the mixing tank. Valves are respectively installed on the feed pipes and the discharge pipes. A discharge port is arranged at the lower end of the mixing tank, and a valve is installed at the discharge port to realize the automatic and accurate weighing and mixing of methanol and water, and improve the production efficiency of the methanol hydrogen production system.

[0030] This application combines the above prior art, such as Figures 1 to 6As shown in the figure, the present invention provides a technical solution: a mechanical stirring device for uniform mixing of raw materials in a methanol-to-hydrogen production device. A weighing mechanism 4 is installed at the top of the stirring tank 1. The weighing mechanism 4 includes a support rod 401, a methanol weighing tank 402, and a water weighing tank 403. The support rod 401 is installed on the top surface of the stirring tank 1. The top end of the support rod 401 is rotatably connected to a lever 404. The methanol weighing tank 402 and the water weighing tank 403 are respectively rotatably connected to both ends of the lever 404. The bottom ends of the methanol weighing tank 402 and the water weighing tank 403 are both connected to the stirring tank 1 through hoses 5. A slide rail 405 is provided on the surface of the lever 404, and a counterweight 406 is slidably connected inside the slide rail 405. The present invention does not aim to weigh the true weights of methanol or water, but rather to keep or approximate the set weight ratio of methanol to water. By selecting the weight of the counterweight, the weight of the materials in the weighing tank can be correspondingly adjusted, thereby adjusting the weight ratio of methanol to water.

[0031] In this embodiment: The weighing mechanism 4 is provided. By integrally designing the weighing mechanism 4 with the stirring tank 1, the ratio of methanol to water is dynamically adjusted using the balance principle of the lever 404. The weight change is monitored in real time during the raw material injection process. The sliding counterweight 406 is used to automatically calibrate the weight deviation of the two containers on both sides to ensure accurate mixing ratio. A scale groove 410 is also provided to facilitate visual monitoring of the adjustment process.

[0032] Combined with the above solution:

[0033] Furthermore:

[0034] As Figures 1 to 3 shown;

[0035] In order to connect the methanol weighing tank 402, the water weighing tank 403, and the stirring tank 1, in an optional embodiment, feed pipes 407 are installed at the bottom ends of the methanol weighing tank 402 and the water weighing tank 403, and valves are installed between the hoses 5 and the methanol weighing tank 402 and the water weighing tank 403.

[0036] In this embodiment: By installing the feed pipe 407, it is convenient to inject raw materials into the methanol weighing tank 402 and the water weighing tank 403. The methanol weighing tank 402 and the water weighing tank 403 are connected to the mixing tank 1 through the hose 5, which facilitates injecting the weighed raw materials into the mixing tank 1. The hose is preferably a retractable hose. The two ends of the hose are hermetically connected to the weighing tank and the mixing tank respectively. The length of the hose when fully extended is greater than 1.3 times the distance between the weighing tank and the mixing tank when the lever 404 is in the horizontal direction, but less than 2 times this distance. After the hose of the present invention is selected and optimized, on the one hand, when the weight difference on both sides is large, it can hold the weighing tank or the mixing tank, thus preventing the lever from tilting too much and the counterweight from falling; on the other hand, the hose materials and sizes on both sides are the same. When the lever 404 is in the horizontal direction, the forces and deformations on both sides are the same, thus not affecting the weighing result.

[0037] Combined with the above solution:

[0038] Furthermore:

[0039] As Figures 1 to 3 shown;

[0040] In order to improve stability, in an alternative embodiment, the support rod 401 is located at the center of the top surface of the mixing tank 1, and the top end of the support rod 401 is connected to the center of the lever 404.

[0041] In this embodiment: By setting the support rod 401 at the center of the top surface of the mixing tank 1 and connecting the top end of the support rod 401 to the center of the lever 404, the lever 404 can be kept balanced, thereby realizing the weighing operation on the methanol weighing tank 402 and the water weighing tank 403 through the lever 404.

[0042] Combined with the above solution:

[0043] Furthermore:

[0044] As Figures 2 to 4 shown;

[0045] In order to fix the counterweight 406, in an alternative embodiment, a magnet A408 is installed on the inner wall of the slide rail 405, and a magnet B409 is installed on the inner wall of the counterweight 406.

[0046] In this embodiment: By installing the magnet A408 on the inner wall of the slide rail 405 and the magnet B409 on the inner wall of the counterweight 406, when the magnet A408 and the magnet B409 are attracted, the counterweight 406 can be fixed.

[0047] Combined with the above solution:

[0048] Furthermore:

[0049] AsFigures 2 to 4 as shown;

[0050] In order to fix the counterweight 406, in an alternative embodiment, the opposite sides of magnet A 408 and magnet B 409 are respectively the S pole and the N pole.

[0051] In this embodiment: The opposite sides of magnet A 408 and magnet B 409 are respectively set as the S pole and the N pole. When magnet A 408 and magnet B 409 are in contact, magnet A 408 can be attracted to magnet B 409, thereby fixing the counterweight 406.

[0052] Combined with the above solution:

[0053] Furthermore:

[0054] such as Figures 2 to 3 as shown;

[0055] In order to precisely adjust the position of the counterweight 406, in an alternative embodiment, a scale groove 410 is formed on the top surface of the lever 404. The number of scale grooves 410 is several, and several scale grooves 410 are evenly distributed on the top surface of the lever 404.

[0056] In this embodiment: The scale groove 410 is provided. When it is necessary to quickly adjust the position of the counterweight 406, only need to observe the position between the counterweight 406 and the scale groove 410, and slide the counterweight 406, then the position of the counterweight 406 can be precisely adjusted, thereby adjusting the ratio of methanol to water.

[0057] Combined with the above solution:

[0058] Furthermore:

[0059] such as Figures 5 to 6 as shown;

[0060] In order to quickly judge the mixing ratio state, in an alternative embodiment, a visual mixing ratio mechanism 6 is installed on the top of the mixing tank 1. The visual mixing ratio mechanism 6 includes a column 601 installed on the top surface of the mixing tank 1. The top end of the column 601 is rotatably connected to a gear 602. A pointer 603 is installed on the top surface of the gear 602. A connecting block 604 is installed on the surface of the column 601, and a scale disk 605 is installed on the surface of the connecting block 604.

[0061] In this embodiment: The visual mixing ratio mechanism 6 is provided. By sliding the counterweight 406, the inclination angle of the lever 404 is changed. When the counterweight 406 slides, it can drive the rack 411 to move, thereby rotating the gear 602. The rotation of the gear 602 can drive the pointer 603 to rotate. By observing the positions of the pointer 603 and the scale disk 605, the mixing ratio state of methanol and water can be quickly judged.

[0062] Combined with the above solution:

[0063] Furthermore:

[0064] As Figures 5 to 6 shown;

[0065] In order to rotate the pointer 603, in an alternative embodiment, a rack 411 is mounted on the side surface of the counterweight 406, and the rack 411 is in meshing connection with the gear 602.

[0066] In this embodiment: The rack 411 is mounted on the side surface of the counterweight 406, and the rack 411 is meshed with the gear 602. When the counterweight 406 is moved, the counterweight 406 drives the rack 411 to move, and the rack 411 can drive the gear 602 to rotate. The gear 602 then drives the pointer 603 to rotate within the scale dial 605, facilitating the observation of the mixing ratio state.

[0067] Combined with the above solution:

[0068] Furthermore:

[0069] As Figures 5 to 6 shown;

[0070] In order to rotate the pointer 603, in an alternative embodiment, the scale dial 605 is located between the pointer 603 and the gear 602, and the pointer 603 passes through the center of the scale dial 605.

[0071] In this embodiment: When the gear 602 rotates, it drives the pointer 603 to rotate within the scale dial 605. By observing the position of the pointer 603 within the scale dial 605, the mixing ratio state of methanol and water can be quickly determined.

[0072] Working principle: When in use, first slightly slide the counterweight 406 to separate the magnet A 408 and the magnet B 409. Slide the counterweight 406 again so that the counterweight 406 slides within the slide rail 405. At the same time, the counterweight 406 drives the rack 411 to move, the rack 411 drives the gear 602 to rotate, and the gear 602 drives the pointer 603 to rotate within the scale disk 605. By observing the scale groove 410 and the scale disk 605, fix the counterweight 406 at the required position to make the magnet A 408 and the magnet B 409 stick together. Since the opposite sides of the magnet A 408 and the magnet B 409 are the S pole and the N pole respectively, when the magnet A 408 and the magnet B 409 stick together, they can be attracted and fixed, thus fixing the counterweight 406. Subsequently, add raw materials into the methanol weighing tank 402 and the water weighing tank 403 respectively through the feed pipe 407. The weights of the methanol weighing tank 402 and the water weighing tank 403 increase until the lever 404 reaches the horizontal state. At this time, the ratio of methanol and water can be completed. Then open the valve to make the raw materials pass through the hose 5 and inject into the mixing tank 1, and then start the mixing motor 2 to mix and process the raw materials.

[0073] A spirit level is provided at the top of the support rod 401, so as to use the spirit level to assist in judging the balance degree of the lever 404. If the lever is in the horizontal direction, it means that the ratio of methanol to water meets the requirements.

[0074] Embodiment 2

[0075] As Figure 7 shown, the motor shaft of the mixing motor is connected to the mixing shaft 21, and the mixing shaft 21 is located inside the mixing tank. Mixing blades are provided above the mixing shaft 21. The motor rotates to drive the mixing shaft to rotate, thereby driving the mixing blades to rotate horizontally. The lower end of the mixing shaft is inserted into the cylinder, and the cylinder is fixed inside the mixing tank through the supporting legs 26 at the bottom. A first bevel gear 25 is sleeved on the part of the mixing shaft located inside the cylinder. A connecting shaft 23 is rotatably connected to the cylinder, and a second bevel gear 24 is connected to one end of the connecting shaft 23 located inside the cylinder. The second bevel gear 24 meshes with the first bevel gear 25. A paddle 22 is connected to the end of the connecting shaft 23 located outside the cylinder. The motor rotates to drive the mixing shaft to rotate, thereby driving the paddle to rotate in the vertical direction. Furthermore, the flow direction of the material in the mixing tank is made more abundant, improving the mixing effect.

[0076] There are at least three second bevel gears meshing with the same first bevel gear, so that the distribution of the paddles is more uniform. There are at least two first bevel gears, and the distance between the two is at least more than 10 cm. Thus, the mixing is more uniform. The connecting shaft located above is preferably not directly opposite to the connecting shaft located below, so that the paddles are staggered.

[0077] The surface of the paddle is preferably provided with depressions, so as to use the depressions to hold the material and make the mixing more uniform.

[0078] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention in any other form. Any person skilled in the relevant art may use the technical content disclosed above to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. Mechanical stirring device for uniform mixing of raw materials in methanol-to-hydrogen production unit, comprising a stirring tank (1), a stirring motor (2) is installed at the top of the stirring tank (1), and a discharge pipe (3) is installed at the bottom of the stirring tank (1), characterized in that: A weighing mechanism (4) is installed at the top of the mixing tank (1). The weighing mechanism (4) includes a support rod (401), a methanol weighing tank (402), and a water weighing tank (403). The support rod (401) is installed on the top surface of the mixing tank (1). The top end of the support rod (401) is rotatably connected to a lever (404). The methanol weighing tank (402) and the water weighing tank (403) are respectively rotatably connected to both ends of the lever (404). The bottom ends of the methanol weighing tank (402) and the water weighing tank (403) are both connected to the mixing tank (1) through hoses (5). A slide rail (405) is formed on the surface of the lever (404), and a counterweight block (406) is slidably connected inside the slide rail (405).

2. The mechanical stirring device for uniform mixing of raw materials of the methanol hydrogen production device according to claim 1, characterized in that: Feeding pipes (407) are installed at the bottom ends of the methanol weighing tank (402) and the water weighing tank (403). Valves are installed between the hoses (5) and the methanol weighing tank (402) and the water weighing tank (403).

3. The mechanical stirring device for uniform mixing of raw materials of the methanol-to-hydrogen production device according to claim 2, characterized in that: The support rod (401) is located at the center of the top surface of the mixing tank (1), and the top end of the support rod (401) is connected to the center of the lever (404).

4. The mechanical stirring device for uniform mixing of raw materials of the methanol hydrogen production device according to claim 3, characterized in that: A magnet A (408) is installed on the inner wall of the slide rail (405), and a magnet B (409) is installed on the inner wall of the counterweight block (406).

5. The mechanical stirring device for raw material mixing homogenization of the methanol-to-hydrogen production device according to claim 4, characterized in that: The opposite sides of the magnet A (408) and the magnet B (409) are the S pole and the N pole respectively.

6. The mechanical stirring device for uniform mixing of raw materials of the methanol-to-hydrogen production device according to claim 5, characterized in that: A scale groove (410) is formed on the top surface of the lever (404). The number of the scale grooves (410) is several, and several of the scale grooves (410) are equally spaced on the top surface of the lever (404).

7. The mechanical stirring device for uniform mixing of raw materials of the methanol-to-hydrogen production device according to claim 6, characterized in that: A visual proportioning mechanism (6) is installed at the top of the mixing tank (1). The visual proportioning mechanism (6) includes a column (601) installed on the top surface of the mixing tank (1). The top end of the column (601) is rotatably connected to a gear (602). A pointer (603) is installed on the top surface of the gear (602). A connecting block (604) is installed on the surface of the column (601), and a scale disk (605) is installed on the surface of the connecting block (604).

8. The mechanical stirring device for uniform mixing of raw materials of the methanol hydrogen production device according to claim 7, characterized in that: A rack (411) is installed on the side surface of the counterweight block (406), and the rack (411) is meshed with the gear (602).

9. The mechanical stirring device for raw material mixing and homogenization of the methanol-to-hydrogen production device according to claim 8, characterized in that: The scale disk (605) is located between the pointer (603) and the gear (602), and the pointer (603) penetrates through the center of the scale disk (605).

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