A raw material stirring device for catalyst support production
By introducing vertical driving force and three-dimensional mixing design into the stirring device, the problem of uneven mixing in existing stirring devices is solved, achieving efficient slurry mixing in the catalyst support production process and improving the performance of the catalyst support.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- RENQIU NORTH CHINA PETROLEUM CLEAN ENVIROMENTAL PROTECTION CO LTD
- Filing Date
- 2025-08-05
- Publication Date
- 2026-07-03
AI Technical Summary
Existing stirring devices lack vertical driving force in catalyst carrier production, resulting in longitudinal stratification of the slurry and uneven mixing near the inner wall of the stirred tank, leading to low mixing efficiency and affecting the performance stability of the catalyst carrier.
Design a raw material mixing device for catalyst carrier production. The device uses a stirring motor-driven stirrer to generate horizontal circulation, and a pusher plate driven by a telescopic cylinder to move vertically and reciprocally in the guide channel to achieve three-dimensional mixing of the slurry. The design of the guide plate and pusher plate forces the slurry to circulate up and down in the mixing vessel, eliminating dead zones in the mixing.
It achieves thorough three-dimensional mixing of the slurry in the stirred tank, significantly improving mixing quality and efficiency, eliminating dead zones in the mixing process, and enhancing the performance of the catalyst support.
Smart Images
Figure CN224442754U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of stirring device technology, and in particular to a raw material stirring device for catalyst carrier production. Background Technology
[0002] Raw materials for catalyst support production refer to the various basic materials used to manufacture catalyst supports. The main function of these materials is to provide a physical and chemical support environment for the active components of the catalyst (such as metals, metal oxides, etc.), thereby ensuring that the catalyst can function efficiently and stably during the reaction process.
[0003] In the catalyst carrier production process, raw materials need to be mixed with water to form a high-solids-content slurry. The uniformity of the slurry directly determines the pore structure distribution of the carrier and the final catalyst performance. To ensure thorough mixing of the slurry, a stirring device is usually required. Most existing stirring devices achieve horizontal stirring through a stirring shaft and stirring blades. This stirring method mainly generates horizontal circulation, i.e., the slurry rotates around the stirring shaft. Although horizontal circulation can mix the slurry in the horizontal direction to some extent, it cannot provide effective vertical driving force, resulting in unsatisfactory mixing effect and low mixing efficiency. In addition, the horizontal circulation is mainly concentrated in the central area of the stirred tank, while the slurry near the inner wall of the stirred tank lacks effective stirring, and its mixing effect is far less than that of the slurry in the central area, easily forming local high-concentration areas, further aggravating the problem of uneven mixing. This uneven mixing not only reduces the stirring efficiency but may also lead to unstable performance of the catalyst carrier during subsequent use.
[0004] Therefore, this application provides a raw material stirring device for catalyst support production to solve the problem of longitudinal stratification of slurry caused by the lack of vertical driving force in existing stirring devices, especially the uneven mixing of slurry near the inner wall of the stirring vessel. Utility Model Content
[0005] The purpose of this invention is to provide a raw material stirring device for catalyst support production, which solves the problems of uneven mixing and low efficiency caused by the fact that the stirring device in the prior art can only perform horizontal stirring.
[0006] To solve the above-mentioned technical problems, this utility model provides a raw material stirring device for catalyst carrier production, including a support frame, a stirring vessel fixedly mounted on the top surface of the support frame, a stirring motor set in the middle of the top surface of the stirring vessel, the output shaft of the stirring motor extending vertically downward to the inner cavity of the stirring vessel, and a stirrer fixedly connected to the bottom end of its output shaft; an annular guide plate is set on the inner wall of the stirring vessel, forming an annular gap between the guide plate and the inner wall of the stirring vessel, and the annular gap is divided into multiple guiding channels by multiple radially arranged partitions, and a horizontal push plate is adapted to be set in each guiding channel. The bottom surface of the push plate is connected to the top end of the telescopic cylinder extension rod, the telescopic cylinder is fixed to the support frame, and the telescopic cylinder drives the push plate to reciprocate in the vertical direction to realize three-dimensional mixing of slurry in the stirring vessel.
[0007] A further improvement of this utility model is that: an inlet is provided on the top surface of the mixing vessel, located on one side of the mixing motor; an outlet is provided on the bottom surface of the mixing vessel; and an observation window is provided on the upper middle part of the side wall of the mixing vessel.
[0008] A further improvement of the present invention is that a motor support is provided in the middle of the top surface of the mixing vessel, the top surface of the motor support is fixed with a stirring motor, and the output shaft of the stirring motor vertically downward passes through the motor support and the top surface of the mixing vessel, and extends into the inner cavity of the mixing vessel.
[0009] A further improvement of the present invention is that the stirrer includes a stirring shaft, the top end of which is fixedly connected to the output shaft of the stirring motor, and several stirring blades are arranged circumferentially on the stirring shaft.
[0010] A further improvement of this utility model is that the top surface of the guide plate is 50-100mm higher than the top surface of the uppermost stirring blade on the stirring shaft, and there is a 30-50mm gap between the bottom surface of the guide plate and the inner wall of the bottom surface of the stirring vessel.
[0011] A further improvement of this utility model is that: a number of guide holes are uniformly arranged along the height direction on the portion of the guide plate corresponding to each guide channel.
[0012] A further improvement of this utility model is that there is a radial distance of 5~10 mm between the stirring blade and the guide plate.
[0013] A further improvement of the present invention is that the support includes multiple support legs, which are evenly distributed on the bottom surface of the mixing vessel, and a horizontal support plate is welded to the upper part of the opposite side wall of two adjacent support legs.
[0014] A further improvement of this utility model is that: the cylinder body of the telescopic cylinder is fixed on the bottom surface of the support plate, the guide sleeve of the telescopic cylinder passes through the support plate and the mixing vessel in sequence, and the top end of the telescopic rod inside the guide sleeve is fixedly connected to the middle part of the push plate.
[0015] A further improvement of this utility model is that the shape of the pusher plate is adapted to the shape of the guide channel, and the area of the pusher plate is smaller than the cross-sectional area of the guide channel, so as to ensure that the pusher plate can fully push the slurry in the guide channel.
[0016] By adopting the above technical solution, this utility model has the following beneficial effects:
[0017] 1. This utility model provides a raw material stirring device for catalyst carrier production. The stirring device generates horizontal circulation through a stirrer driven by a stirring motor, while a pusher plate driven by a telescopic cylinder moves vertically and reciprocally within the guide channel, forcibly pushing the slurry up and down for circulation. This achieves three-dimensional mixing of the slurry in the mixing vessel, allowing the slurry to be fully mixed and more uniform, significantly improving stirring efficiency and mixing quality. The pusher plate pushes the slurry to flow vertically, which can advance the slurry near the inner wall towards the center area of the mixing vessel, allowing it to participate in the overall mixing process. This solves the problem of dead zones in stirring, further improving stirring efficiency and mixing effect, and thus enhancing the performance of the catalyst carrier.
[0018] 2. The present invention provides a raw material stirring device for catalyst carrier production. The design of the guide holes on the guide plate in the device promotes radial slurry exchange, eliminates the mixing gradient difference between the central area and the wall area, and makes the overall distribution of slurry in the stirring vessel more uniform. Attached Figure Description
[0019] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0020] Figure 1 A schematic diagram of a raw material stirring device for catalyst support production;
[0021] Figure 2 A side cross-sectional view of a raw material stirring device for catalyst support production;
[0022] Figure 3 A top-view schematic diagram of the internal structure of the stirred tank;
[0023] Figure 4 A schematic diagram of the structure of the guide plate, push plate, and extension bracket;
[0024] Figure 5 This is a bottom-view diagram of the internal structure of the stirred tank.
[0025] Figure 6A schematic diagram of the structure of the guide plate, push plate, and telescopic cylinder;
[0026] Figure 7 A schematic diagram of the support frame and telescopic cylinder;
[0027] Reference numerals in the attached drawings: 1. Stirring vessel; 2. Stirring motor; 3. Stirrer; 4. Baffle plate; 5. Baffle plate; 6. Flow channel; 7. Push plate; 8. Telescopic cylinder; 9. Support; 11. Inlet; 12. Outlet; 13. Observation window; 31. Stirring shaft; 32. Stirring blade; 41. Flow guide hole; 91. Support leg; 92. Support plate; 14. Motor bracket. Detailed Implementation
[0028] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0029] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0031] The present invention will be further explained below with reference to specific embodiments.
[0032] like Figures 1-7As shown in the figure, this embodiment provides a raw material stirring device for catalyst carrier production, including a support 9. A stirring vessel 1 is fixedly installed on the top surface of the support 9. A stirring motor 2 is installed in the middle of the top surface of the stirring vessel 1. The output shaft of the stirring motor 2 extends vertically downward to the inner cavity of the stirring vessel 1, and a stirrer 3 is fixedly connected to the bottom end of its output shaft. An annular guide plate 4 is provided on the inner wall of the stirring vessel 1, forming an annular gap between the guide plate 4 and the inner wall of the stirring vessel 1. The annular gap is divided into multiple guiding channels 6 by multiple radially arranged partitions 5, which eliminate the circumferential eddies in the annular space and force the slurry to move in the vertical direction. A horizontal pusher plate 7 is adapted to be installed in each guiding channel 6. The shape of the pusher plate 7 is adapted to the shape of the guiding channel 6, and the area of the pusher plate 7 is smaller than the cross-sectional area of the guiding channel 6 to ensure that the pusher plate 7 can fully push the slurry in the guiding channel 6. The bottom surface of the pusher plate 7 is connected to the top of the telescopic rod of the telescopic cylinder 8. The telescopic cylinder 8 is fixed to the bracket 9. The telescopic cylinder 8 drives the pusher plate 7 to reciprocate vertically, realizing three-dimensional mixing of the slurry in the mixing vessel 1. This mixing device generates horizontal circulation through the stirrer 3 driven by the stirring motor 2. At the same time, the pusher plate 7 is driven by the telescopic cylinder 8 to reciprocate vertically in the guide channel 6, forcibly pushing the slurry up and down to circulate, realizing three-dimensional mixing of the slurry in the mixing vessel 1. This allows the slurry to be fully mixed, the mixing to be more uniform, and significantly improves the mixing efficiency and mixing quality. The pusher plate 7 pushes the slurry to flow vertically, which can push the slurry near the inner wall to the central area of the mixing vessel, so that it participates in the overall mixing process. This device constructs a three-dimensional mixing flow field through the synergistic effect of horizontal circulation and vertical forced circulation, completely eliminating the stirring dead zone, improving the uniformity and efficiency of the slurry, and improving the performance of the catalyst carrier.
[0033] like Figures 1-2 As shown, in this embodiment, the top surface of the mixing vessel 1 is provided with an inlet 11 located on one side of the stirring motor 2; this is used to add raw materials and water into the mixing vessel 1. The bottom surface of the mixing vessel 1 is provided with an outlet 12; this is used to discharge the mixed slurry from the mixing vessel. The outlet 12 may be equipped with a valve (not shown in the figure) to control the discharge of the slurry during the stirring process, ensuring that the slurry in the mixing vessel can be discharged in the best condition. An observation window 13 is provided in the upper middle part of the side wall of the mixing vessel 1.
[0034] like Figures 1-5As shown, in this embodiment, a motor support 14 is provided in the middle of the top surface of the mixing vessel 1. The top surface of the motor support 14 is fixed with a stirring motor 2. The output shaft of the stirring motor 2 extends vertically downward through the motor support 14 and the top surface of the mixing vessel 1, and extends into the inner cavity of the mixing vessel 1. The stirrer 3 includes a stirring shaft 31, the top end of which is fixedly connected to the output shaft of the stirring motor 2. Several stirring blades 32 are arranged circumferentially on the stirring shaft 31. The rotation of the stirring blades 32 generates a high-intensity radial flow, forming a horizontal circulation, achieving initial dispersion of the slurry, and providing a good foundation for subsequent three-dimensional mixing.
[0035] like Figure 2 , Figure 5 As shown, in this embodiment, the top surface of the guide plate 4 is 50-100mm higher than the top surface of the uppermost stirring blade 32 on the stirring shaft 31, causing the pusher plate 7 to push the slurry in the guide channel 6 to a height above the slurry surface. Subsequently, the slurry flows out of the guide channel 6 and falls into the horizontal circulation within the stirred tank 1, further participating in the overall mixing process. This enhances the mixing effect of the slurry in the horizontal direction and significantly improves the uniformity of the slurry. By pushing the slurry to a position above the liquid surface, the stratification phenomenon formed by the sedimentation of heavy particles and the floating of light components can be effectively broken, allowing the slurry to be fully mixed in the vertical direction. There is a 30-50mm gap between the bottom surface of the guide plate 4 and the inner wall of the bottom surface of the stirred tank 1. This gap ensures that the fluid at the bottom can flow freely to the guide area on the bottom surface of the guide plate 4. Corresponding to each guide channel 6, the guide plate 4 has several guide holes 41 evenly arranged along the height direction. This promotes radial slurry exchange, eliminates the mixing gradient difference between the central and wall regions, and makes the overall distribution of slurry within the stirred tank more uniform. There is a radial distance of 5-10 mm between the stirring blades 32 and the guide plate 4. This reduces the frictional resistance between the stirring blades 32 and the guide plate 4, allowing the stirring blades to rotate more smoothly and improving mixing efficiency.
[0036] like Figure 1 , Figure 2 , Figure 4 , Figure 7 As shown, in this embodiment, the bracket 9 includes multiple support legs 91, which are evenly distributed on the bottom surface of the mixing vessel 1. A horizontal support plate 92 is welded to the upper part of the opposite sidewalls of two adjacent support legs 91. The cylinder body of the telescopic cylinder 8 is fixed to the bottom surface of the support plate 92. The guide sleeve of the telescopic cylinder 8 passes through the support plate 92 and the mixing vessel 1 sequentially. The top end of the telescopic rod inside the guide sleeve is fixedly connected to the middle part of the push plate 7.
[0037] This utility model also provides the working principle of a raw material stirring device for catalyst carrier production: First, raw materials and water are added to the stirring vessel 1 through the inlet 11 on one side of the top surface. Then, the stirring motor 2 is started simultaneously, and its output shaft drives the stirring blades 32 to rotate through the stirring shaft 31, generating a horizontal circulation to achieve initial dispersion of the slurry. At the same time, the telescopic cylinder 8 is activated, driving the push plate 7 to reciprocate in the vertical direction within the guide channel 6, forcibly pushing the slurry up and down for circulation. When the pusher plate 7 moves upward, it compresses the slurry in the guide channel 6 and causes it to flow upward. The slurry at the bottom of the pusher plate 7 can flow freely to the guide area on the bottom surface of the guide plate 4. The guide holes 41 are evenly arranged along the height direction on the guide plate 4. Some of the slurry is exchanged laterally through the guide holes 41, which increases the fluidity of the slurry and promotes radial mixing. When the guide plate 4 rises to the highest point of the guide channel 6, since the top surface of the guide plate 4 is 50-100mm higher than the top surface of the stirring blade 32, the slurry is pushed to a height higher than the liquid surface and then flows out of the guide channel 6 and falls back into the horizontal circulation. During the downward movement of the guide plate 4, it pushes the slurry at the bottom of the guide plate 4 downward, causing the slurry to flow out from the guide holes 41 or the lowest point of the guide channel 6, which increases the fluidity of the slurry. Finally, the mixed slurry is discharged through the outlet 12 on the bottom surface of the stirred tank 1. The entire device achieves three-dimensional mixing of the slurry through the combination of horizontal circulation and vertical driving force, effectively solving the problem of dead zones in the stirring, significantly improving stirring efficiency and mixing quality, and thus improving the performance of the catalyst carrier.
[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. A raw material stirring device for catalyst support production, characterized in that, The system includes a support (9), a mixing tank (1) is fixedly installed on the top surface of the support (9), a stirring motor (2) is installed in the middle of the top surface of the mixing tank (1), the output shaft of the stirring motor (2) extends vertically downward to the inner cavity of the mixing tank (1), and the bottom end of its output shaft is fixedly connected to a stirrer (3); an annular guide plate (4) is installed on the inner wall of the mixing tank (1), an annular gap is formed between the guide plate (4) and the inner wall of the mixing tank (1), and the annular gap is divided into multiple guide channels (6) by multiple radially arranged partitions (5), and a horizontal push plate (7) is adapted to be installed in each guide channel (6). The bottom surface of the push plate (7) is connected to the top end of the telescopic rod of the telescopic cylinder (8), the telescopic cylinder (8) is fixed to the support (9), and the telescopic cylinder (8) drives the push plate (7) to reciprocate in the vertical direction to realize the three-dimensional mixing of the slurry in the mixing tank (1).
2. The raw material stirring device for catalyst carrier production according to claim 1, characterized by An inlet (11) is provided on the top surface of the mixing vessel (1) on one side of the stirring motor (2); an outlet (12) is provided on the bottom surface of the mixing vessel (1); and an observation window (13) is provided on the upper middle part of the side wall of the mixing vessel (1).
3. The raw material stirring device for catalyst carrier production according to claim 1, characterized in that, A motor bracket (14) is provided in the middle of the top surface of the mixing vessel (1). The top surface of the motor bracket (14) is fixed with a stirring motor (2). The output shaft of the stirring motor (2) runs vertically downward through the motor bracket (14) and the top surface of the mixing vessel (1), and extends into the inner cavity of the mixing vessel (1).
4. The raw material stirring device for catalyst carrier production according to claim 1, characterized in that, The stirrer (3) includes a stirring shaft (31), the top end of which is fixedly connected to the output shaft of the stirring motor (2), and several stirring blades (32) are arranged around the stirring shaft (31).
5. The raw material stirring device for catalyst carrier production according to claim 3, characterized in that, The top surface of the guide plate (4) is 50-100mm higher than the top surface of the uppermost stirring blade (32) on the stirring shaft (31), and there is a 30-50mm gap between the bottom surface of the guide plate (4) and the inner wall of the bottom surface of the stirring vessel (1).
6. The raw material stirring device for catalyst carrier production according to claim 4, characterized in that, The portion of the guide plate (4) corresponding to each guide channel (6) has several guide holes (41) evenly arranged along the height direction.
7. The raw material stirring device for catalyst carrier production according to claim 4, characterized in that, There is a radial distance of 5~10 mm between the stirring blade (32) and the guide plate (4).
8. The raw material stirring device for catalyst support production according to claim 1, characterized in that, The support (9) includes multiple support legs (91), which are evenly distributed on the bottom surface of the mixing vessel (1). A horizontal support plate (92) is welded to the upper part of the opposite side wall of two adjacent support legs (91).
9. The raw material stirring device for catalyst carrier production according to claim 8, characterized by The cylinder body of the telescopic cylinder (8) is fixed on the bottom surface of the support plate (92). The guide sleeve of the telescopic cylinder (8) passes through the support plate (92) and the mixing vessel (1) in sequence. The top end of the telescopic rod inside the guide sleeve is fixedly connected to the middle part of the push plate (7).
10. The raw material stirring device for catalyst carrier production according to claim 1, characterized in that, The shape of the pusher plate (7) is adapted to the shape of the guide channel (6), and the area of the pusher plate (7) is smaller than the cross-sectional area of the guide channel (6) to ensure that the pusher plate (7) can fully push the slurry in the guide channel (6).