Premixing and discharging device for continuously preparing activated carbon
By designing a premixed and uneven fusion of the adhesive water-absorbing plate and components in the continuous preparation of activated carbon, the problem of uneven bonding of the binder water-absorbing plate and components is solved, and more efficient premixed and stable activated carbon production is achieved.
Patent Information
- Application Number
- CN202421112601.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-05-21
AI Technical Summary
In the continuous preparation process of activated carbon, when coal powder, binder and water are directly added to the kneader, the adhesive water-absorbing plate is formed, the feed channel is blocked, and the various components are unevenly fused, affecting the stability of activated carbon products.
A premixed feeding device for continuous preparation of activated carbon is designed, which includes a multi-dimensional housing, a rotating shaft, a paddle and a driving mechanism. The rotational stirring of the blade and the flip diffusion formed by the change in the shell diameter can improve the premixing ability, ensure uniform mixing of coal powder and binder, isolate the upflow of water vapor, and avoid bonding of the adhesive plate.
It effectively improves the mixing uniformity between coal powder and binder, avoids blockage of binder feed channels and uneven material channels, and ensures the stability and high-quality production of activated carbon products.
Smart Images
Figure CN222593489U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a material premixing device, in particular to a premixing feeding device for continuously preparing activated carbon, belonging to the technical field of activated carbon preparation. Background Art
[0002] In recent years, with the implementation of China's environmental protection policies, the activated carbon industry used for flue gas purification has developed rapidly. The domestic demand for activated carbon will continue to grow. The activated carbon industry is developing rapidly, and activated carbon production equipment is also continuously improving and innovating.
[0003] The preparation process of large-particle activated carbon is as follows: by crushing and grinding the raw coal to make coal powder of a certain particle size, adding a certain proportion of binder and water to mix, granulating into activated carbon particles of the required size through granulating equipment, and then obtaining activated carbon particle products through two processes of carbonization and activation. At present, the large-particle activated carbon raw material mixing equipment is mainly intermittent double-roll kneading equipment.
[0004] When the existing kneading (mixing) equipment is working, all the coal powder raw materials are first added to the equipment, and then the adhesive is added and kneaded for a period of time, and then water is added and kneaded. After completion, the discharge port is opened to discharge the materials and enter the next process. This feeding and mixing method has poor mixing effect of each component material and low processing capacity. The more materials are added at one time, the more difficult it is to evenly disperse the materials, so large-scale production cannot be achieved. The kneading equipment is an intermittent production, and the processing capacity of a single kneading equipment is limited. In order to meet production needs, multiple kneading machines are generally configured for operation, which increases the difficulty of maintenance, requires more operators, and increases the floor space. On the other hand, there are many kneading equipment, and each equipment needs to be equipped with a raw material addition system. Affected by the raw materials and the equipment itself, the kneading effects of multiple systems are inconsistent. At the same time, it is also affected by multiple factors such as the operation of different personnel, which easily causes unstable quality of mixed granulation and affects the stability of the final product.
[0005] In the case that the existing kneading equipment adopts intermittent operation and cannot achieve large-scale production, the present application proposes a continuous preparation method of activated carbon using continuous raw material processing to increase the processing capacity, thereby increasing the production output of activated carbon. However, directly changing the existing activated carbon preparation process to a continuous production process with continuous input of raw materials has the following technical problems: in the existing activated carbon preparation process, coal powder, binder and water are often directly added to a kneader for mixing. A large amount of water is added during the kneading process. On the one hand, due to overheating and frictional heat generated during the kneading process, a certain amount of water vapor will be evaporated to form. When the kneading equipment adopts a continuous production method and raw materials are continuously input into the kneading equipment, the evaporated water vapor will flow into the binder feed channel. Since the binder has high water absorption, the water vapor entering the binder feed channel is easily absorbed by the binder, resulting in the compaction of the binder, causing the binder feed channel to be blocked, affecting the continuous input of the binder, and further affecting the continuous production of activated carbon; on the other hand, as mentioned above, the binder is easy to contact with water and quickly absorbs water to form agglomerates, which will affect the uniform fusion of the components in the mixing operation, resulting in instability in the subsequent granulation quality, thereby affecting the performance of the final activated carbon product. Utility Model Content
[0006] In view of the technical problems that when raw materials such as coal powder, binder, and water are continuously fed into the kneading equipment in the above-mentioned continuous preparation method of activated carbon, the binder absorbs water and becomes compacted, resulting in blockage of the binder feeding channel and uneven fusion of the component materials, the utility model proposes a premixing and feeding device for continuous preparation of activated carbon. The premixing and feeding device includes a shell, a rotating shaft arranged on the central axis of the shell, a paddle arranged on the rotating shaft, and a driving mechanism and a transmission mechanism for driving the rotating shaft to drive the paddle to rotate. The shell described in the utility model is a multiple variable diameter structure along the axial direction, and the rotating shaft can drive the paddle to rotate and stir, so that the material entering the premixing and feeding device is not only sheared by the paddle, but also forms a flipping and diffusion effect due to the change in the diameter of the shell, that is, the material channel, which greatly improves the premixing capacity of the device and improves the fusion uniformity of coal powder and binder.
[0007] In the technical solution of the utility model, coal powder and binder are firstly mixed in the premixing feeding device, and the premixed raw materials obtained after the preliminary mixing are mixed again with water in the continuous mixing device. That is, in the continuous preparation process of activated carbon, the setting of the premixing feeding device in the utility model can isolate the water vapor generated during the stirring process of the continuous mixing device, and prevent the water vapor from flowing up into the binder feeding channel. Moreover, the rotating shaft in the premixing feeding device drives the paddles to rotate and stir. Even if the water vapor flows up into the premixing feeding device, it is not easy to produce material compaction in the device, thereby avoiding the blockage of the material channel and avoiding the problem of uneven fusion of the components caused by the binder absorbing water and forming agglomerates in the prior art.
[0008] According to an embodiment of the utility model, a premixing feeding device for continuously preparing activated carbon is provided.
[0009] A premixing feeding device for continuous preparation of activated carbon, the device comprising a shell, a rotating shaft, a transmission mechanism, a driving mechanism, and a paddle. The shell is a multiple diameter-changing structure along the axial direction. The shell is provided with a feed port and a discharge port. The rotating shaft is arranged on the central axis of the shell and is located between the top and the bottom of the shell. The rotating shaft is connected with a transmission mechanism. The driving shaft of the transmission mechanism extends out of the shell and is connected with a driving mechanism arranged outside the shell. The rotating shaft is provided with a paddle.
[0010] Generally speaking, the feed inlet of the premixing feeding device is arranged at the top of the shell, and the discharge outlet of the premixing feeding device is arranged at the bottom of the shell.
[0011] In the utility model, a plurality of blades are arranged on the rotating shaft. Preferably, the plurality of blades are divided into a plurality of groups for arrangement in the axial direction.
[0012] In the utility model, the shell is a multi-layer hourglass structure along the axial direction. Preferably, a group of blades is respectively arranged in each diameter-changing turning area of the shell.
[0013] In the present invention, the blades at the diameter-changing turning position in each set of blades are the longest. Preferably, the lengths of the blades in each set of blades decrease gradually from the diameter-changing turning position to both sides.
[0014] In the utility model, the multiple blades in each group of blades are arranged in a spiral shape along the axial direction.
[0015] In the present invention, the multiple blades in each set of blades are evenly arranged along the axial direction. Preferably, the multiple blades in each set of blades are evenly arranged along the circumferential direction of the rotating shaft.
[0016] In the utility model, the device further comprises a bracket arranged in the shell, the bracket comprises a radial bracket, and the radial bracket is arranged between the rotating shaft and the inner wall of the shell.
[0017] Preferably, the bracket further comprises an annular bracket. The annular bracket is arranged in close contact with the inner wall of the shell. The bracket arrangement of the radial bracket and the annular bracket can effectively ensure the stability of various components in the premixing feeding device.
[0018] In the utility model, a plurality of radial frames and annular frames are arranged in the shell along the axial direction, wherein the radial frames are arranged at various raised positions of the inner diameter of the shell, and the annular frames are arranged at various recessed positions of the inner diameter of the shell.
[0019] In the utility model, the device also includes a bearing seat and a bearing. The bearing seat is arranged on the central axis in the housing and is fixedly connected to the housing (or the bearing seat is fixedly connected to the housing through a bracket). The bearing is installed in the bearing seat. The rotating shaft is arranged at the central axis position in the housing through the bearing.
[0020] In view of the technical problems that when raw materials such as coal powder, binder, and water are continuously fed into the kneading equipment in the continuous preparation method of activated carbon, the binder absorbs water and becomes compacted, resulting in blockage of the binder feeding channel and uneven fusion of the component materials, the utility model proposes a premixing and feeding device for continuous preparation of activated carbon. The premixing and feeding device includes a shell, a rotating shaft arranged on the central axis of the shell, a paddle arranged on the rotating shaft, and a driving mechanism and a transmission mechanism for driving the rotating shaft to drive the paddle to rotate. The shell of the premixing and feeding device in the utility model is a multiple variable diameter structure along the axial direction, and the rotating shaft can drive the paddle to rotate and stir, so that the material entering the premixing and feeding device is not only sheared by the paddle, but also forms a flipping and diffusion effect due to the change in the diameter of the shell, that is, the material channel, which greatly improves the premixing capacity of the device and improves the mixing degree of coal powder and binder.
[0021] In the technical solution of the utility model, coal powder and binder are firstly mixed in the premixing feeding device, and the premixed raw materials obtained after the preliminary mixing are mixed again with water in the continuous mixing device. That is, in the continuous preparation process of activated carbon, the setting of the premixing feeding device in the utility model can isolate the water vapor generated during the stirring process of the continuous mixing device, and prevent the water vapor from flowing up into the binder feeding channel. Moreover, the rotating shaft in the premixing feeding device drives the paddles to rotate and stir. Even if the water vapor flows up into the premixing feeding device, it is not easy to produce material compaction in the device, thereby avoiding the blockage of the material channel and avoiding the problem of uneven fusion of the components caused by the binder absorbing water and forming agglomerates in the prior art.
[0022] It should be noted that the shell of the premixing and feeding device in the present application is a multiple-diameter variable structure along the axial direction, which means that the diameter of the shell changes in the axial direction, and is arranged in multiple diameter changes; the multiple diameter changes here mean that the diameter of the shell does not change only at a certain position, nor does it increase or decrease along a certain rule, but the diameter of the shell changes at multiple positions in the axial direction, and its changing rule will also change once or more times, that is, there will be one or more turning points in the process of shell diameter change (for example: in the axial direction from the feed port to the discharge port, the shell diameter increases and suddenly decreases, or the shell diameter decreases and suddenly increases, or the shell diameter decreases along a certain rule and suddenly continues to decrease according to another rule, or the shell diameter increases along a certain rule and suddenly continues to increase according to another rule, etc., or the shell diameter changes in a cycle according to any of the above situations), so as to achieve the effect that the material can form a flipping and diffusion effect in the premixing and feeding device due to the change in the diameter of the shell, thereby improving the premixing capacity of the device.
[0023] The utility model provides a plurality of blades on a rotating shaft. The driving mechanism drives the transmission mechanism to drive the rotating shaft to rotate, and the rotation of the rotating shaft drives the blades to rotate, thereby achieving the stirring effect of the blades. The driving mechanism and the transmission mechanism are not limited, and can provide driving force for the rotating shaft to drive the blades to rotate. For example, the driving mechanism can be a driving motor, and the transmission mechanism can be a worm gear transmission mechanism.
[0024] As a preferred solution, the multiple blades are divided into multiple groups and arranged in the axial direction of the premixing and feeding device. The grouping arrangement of the multiple blades is adapted to the multiple diameter changes of the shell, that is, a group of blades is respectively arranged in the turning area where the shell diameter changes. In other words, the rotating stirring effect of the blades and the flipping and diffusion effect brought about by the diameter change of the shell cooperate with each other to further enhance the premixing capacity of the device. It is further preferred that the shell of the premixing and feeding device in the utility model is a multi-layer hourglass structure along the axial direction, such as Figure 1 As shown, a group of blades is respectively arranged at each section of the shell's diameter change turning area, that is, a group of blades is respectively arranged at each convex position and concave position of the multi-layer hourglass. In order to maximize the synergy between the rotating stirring effect of the blades and the flipping and diffusion effect brought about by the diameter change of the shell, the blades at the diameter change turning position in each group of blades are the longest, and the length of each blade decreases from the diameter change turning position to both sides.
[0025] In the utility model, the multiple blades in each set of blades are arranged in a spiral along the axis direction, or the multiple blades in each set of blades are evenly arranged along the axis direction and evenly arranged along the circumference direction of the rotating shaft. Among them, the multiple blades in each set of blades are preferably arranged in a spiral along the axis.
[0026] In the present application, "binder", "adhesive" and "adhesive" have the same meaning and can be interchanged.
[0027] Compared with the prior art, the utility model has the following beneficial effects:
[0028] 1. The shell of the premixing feeding device in the utility model is a multiple diameter-variable structure along the axial direction, and the rotating shaft can drive the blades to rotate and stir. Therefore, the material entering the premixing feeding device is not only sheared by the blades, but also forms a flipping and diffusion effect due to the change in the diameter of the shell, that is, the material channel, which greatly improves the premixing capacity of the device and improves the mixing degree of coal powder and binder.
[0029] 2. In the continuous preparation process of activated carbon, the setting of the premixing and feeding device in the utility model can isolate the water vapor generated during the stirring process of the continuous mixing equipment, and prevent the water vapor from flowing up into the binder feeding channel. Moreover, the rotating shaft in the premixing and feeding device drives the paddles to rotate and stir. Even if the water vapor flows up into the premixing and feeding device, it is not easy for the material to be compacted in the device, thereby avoiding the blockage of the material channel and the problem of uneven fusion of the component materials caused by the binder absorbing water and forming agglomerates in the prior art.
[0030] 3. The utility model arranges the multiple blades on the rotating shaft in groups, and the group arrangement is adapted to the multiple diameter changes of the shell, that is, a group of blades is respectively arranged in the turning area where the shell diameter changes, so that the rotating stirring effect of the blades and the flipping and diffusion effect brought about by the diameter change of the shell cooperate with each other, further improving the premixing capacity of the device.
[0031] 4. The shell of the premixing feeding device in the utility model is preferably a multi-layer hourglass structure along the axial direction, and a group of blades are respectively arranged in each section of the shell's variable diameter turning area, that is, a group of blades are respectively arranged at each convex position and concave position of the multi-layer hourglass, and the blades at the variable diameter turning position in each group of blades are the longest, and the length of each blade decreases from the variable diameter turning position to both sides, so that the synergistic effect between the rotating stirring effect of the blades and the flipping and diffusion effect brought about by the diameter change of the shell is maximized as much as possible. BRIEF DESCRIPTION OF THE DRAWINGS
[0032] Figure 1 This is a schematic diagram of the structure of a premixing feeding device for continuous preparation of activated carbon according to the utility model;
[0033] Figure 2 The utility model is a top view of a premixing feeding device for continuously preparing activated carbon.
[0034] Reference numerals:
[0035] 1: housing; 2: rotating shaft; 3: transmission mechanism; 4: driving mechanism; 5: blade; 6: bracket; 601: radial frame; 602: annular frame; 7: bearing seat; 8: bearing. DETAILED DESCRIPTION
[0036] The technical solution of the utility model is illustrated below, and the scope of protection requested for the utility model includes but is not limited to the following embodiments.
[0037] According to an embodiment of the utility model, a premixing feeding device for continuously preparing activated carbon is provided.
[0038] A premixing feeding device for continuous preparation of activated carbon, the device comprises a shell 1, a rotating shaft 2, a transmission mechanism 3, a driving mechanism 4, and a paddle 5. The shell 1 is a multiple diameter-changing structure along the axial direction. The shell 1 is provided with a feed port and a discharge port. The rotating shaft 2 is arranged on the central axis of the shell 1 and is located between the top and the bottom of the shell 1. The rotating shaft 2 is connected with a transmission mechanism 3. The driving shaft of the transmission mechanism 3 extends out of the shell 1 and is connected to the driving mechanism 4 arranged outside the shell 1. The rotating shaft 2 is provided with a paddle 5.
[0039] In the present invention, a plurality of blades 5 are provided on the rotating shaft 2. Preferably, the plurality of blades 5 are divided into a plurality of groups for arrangement in the axial direction.
[0040] In the present invention, the housing 1 is a multi-layer hourglass structure along the axial direction. Preferably, a group of blades is respectively arranged in each diameter-changing turning area of the housing 1.
[0041] In the present invention, the blade 5 at the diameter-changing turning position in each set of blades is the longest. Preferably, the length of each blade 5 in each set of blades decreases from the diameter-changing turning position to both sides.
[0042] In the present invention, the multiple blades 5 in each group of blades are arranged in a spiral shape along the axial direction.
[0043] In the present invention, the multiple blades 5 in each set of blades are evenly arranged along the axial direction. Preferably, the multiple blades 5 in each set of blades are evenly arranged along the circumferential direction of the rotating shaft 2.
[0044] In the present invention, the device further comprises a support 6 arranged in the housing 1. The support 6 comprises a radial support 601. The radial support 601 is arranged between the rotating shaft 2 and the inner wall of the housing 1.
[0045] Preferably, the bracket 6 further includes an annular frame 602. The annular frame 602 is arranged in close contact with the inner wall of the housing 1.
[0046] In the present invention, a plurality of radial frames 601 and annular frames 602 are arranged along the axial direction in the housing 1. The radial frames 601 are arranged at various raised positions of the inner diameter of the housing 1, and the annular frames 602 are arranged at various recessed positions of the inner diameter of the housing 1.
[0047] In the present invention, the device further comprises a bearing seat 7 and a bearing 8. The bearing seat 7 is arranged on the central axis in the housing 1 and is fixedly connected to the housing 1. The bearing 8 is installed in the bearing seat 7. The rotating shaft 2 is arranged at the central axis position in the housing 1 through the bearing 8. Example 1
[0048] like Figure 1 As shown, a premixing feeding device for continuous preparation of activated carbon includes a shell 1, a rotating shaft 2, a transmission mechanism 3, a driving mechanism 4, and a paddle 5. The shell 1 is a multiple diameter-changing structure along the axial direction. The shell 1 is provided with a feed port and a discharge port. The rotating shaft 2 is arranged on the central axis of the shell 1 and is located between the top and the bottom of the shell 1. The rotating shaft 2 is connected to the transmission mechanism 3. The drive shaft of the transmission mechanism 3 extends out of the shell 1 and is connected to the driving mechanism 4 arranged outside the shell 1. The rotating shaft 2 is provided with a paddle 5. Example 2
[0049] The first embodiment is repeated, except that a plurality of blades 5 are provided on the rotating shaft 2 . Example 3
[0050] Example 2 is repeated, except that the plurality of blades 5 are divided into five groups for arrangement in the axial direction. Example 4
[0051] Example 3 is repeated, except that the housing 1 is a multi-layer hourglass structure along the axial direction. Example 5
[0052] The fourth embodiment is repeated, except that a group of blades is respectively provided at each diameter-changing turning area of the housing 1 . Example 6
[0053] Example 5 is repeated, except that the blade 5 located at the diameter-changing turning position in each group of blades is the longest. Example 7
[0054] The sixth embodiment is repeated, except that the length of each blade 5 in each blade group decreases gradually from the diameter-changing turning point to both sides. Example 8
[0055] Example 7 is repeated, except that the multiple blades 5 in each group of blades are arranged in a spiral shape along the axial direction. Example 9
[0056] The embodiment 7 is repeated, except that the multiple blades 5 in each blade group are evenly arranged along the axial direction. The multiple blades 5 in each blade group are evenly arranged along the circumferential direction of the rotating shaft 2. Example 10
[0057] like Figure 2 As shown, the embodiment 8 is repeated, except that the device further comprises a bracket 6 disposed in the housing 1. The bracket 6 comprises a radial bracket 601. The radial bracket 601 is disposed between the rotating shaft 2 and the inner wall of the housing 1. Embodiment 11
[0058] The embodiment 10 is repeated, except that the bracket 6 further includes an annular frame 602. The annular frame 602 is arranged in close contact with the inner wall of the housing 1. Example 12
[0059] The embodiment 11 is repeated, except that a plurality of radial frames 601 and annular frames 602 are provided along the axial direction in the housing 1. The radial frames 601 are provided at various raised positions of the inner diameter of the housing 1, and the annular frames 602 are provided at various recessed positions of the inner diameter of the housing 1. Example 13
[0060] Repeat Example 12, except that the device further includes a bearing seat 7 and a bearing 8. The bearing seat 7 is arranged on the central axis in the housing 1 and is fixedly connected to the housing 1. The bearing 8 is installed in the bearing seat 7. The rotating shaft 2 is arranged at the central axis position in the housing 1 through the bearing 8.
Claims
1. A premixing feeding device for continuous preparation of activated carbon, characterized in that: The device comprises a housing (1), a rotating shaft (2), a transmission mechanism (3), a driving mechanism (4), and a paddle (5); the housing (1) is a multiple diameter-variable structure along the axial direction; the housing (1) is provided with a feed port and a discharge port; the rotating shaft (2) is arranged on the central axis of the housing (1) and is located between the top and the bottom of the housing (1); the rotating shaft (2) is connected with the transmission mechanism (3); the driving shaft of the transmission mechanism (3) extends out of the housing (1) and is connected with the driving mechanism (4) arranged outside the housing (1); and the paddle (5) is provided on the rotating shaft (2).
2. The premix feeding device according to claim 1, characterized in that: A plurality of paddle blades (5) are arranged on the rotating shaft (2).
3. The premix feeding device according to claim 2, characterized in that: The plurality of blades (5) are divided into a plurality of groups and arranged in the axial direction.
4. The premix feeding device according to claim 2, characterized in that: The shell (1) is a multi-layer hourglass structure along the axial direction.
5. The premix feeding device according to claim 4, characterized in that: A group of blades is respectively arranged in each diameter-changing turning area of the housing (1).
6. The premix feeding device according to claim 5, characterized in that: The blade (5) located at the diameter-changing turning position in each group of blades is the longest.
7. The premix feeding device according to claim 6, characterized in that: The length of each blade (5) in each group of blades decreases gradually from the diameter-changing turning position to both sides.
8. The premix feeding device according to claim 3, characterized in that: The multiple blades (5) in each group of blades are arranged in a spiral shape along the axial direction.
9. The premix feeding device according to claim 3, characterized in that: The multiple blades (5) in each group of blades are evenly arranged along the axial direction.
10. The premix feeding device according to claim 9, characterized in that: The multiple blades (5) in each group of blades are evenly arranged along the circumferential direction of the rotating shaft (2).
11. The premix feeding device according to any one of claims 1 to 10, characterized in that: The device also includes a support (6) arranged in the housing (1); the support (6) includes a radial frame (601); the radial frame (601) is arranged between the rotating shaft (2) and the inner wall of the housing (1).
12. The premix feeding device according to claim 11, characterized in that: The support (6) further comprises an annular frame (602); the annular frame (602) is arranged in close contact with the inner wall of the shell (1).
13. The premix feeding device according to claim 12, characterized in that: A plurality of radial frames (601) and annular frames (602) are arranged in the shell (1) along the axial direction; wherein the radial frames (601) are arranged at various protruding positions on the inner diameter of the shell (1), and the annular frames (602) are arranged at various recessed positions on the inner diameter of the shell (1).
14. The premix feeding device according to any one of claims 1-10, 12-13, characterized in that: The device further comprises a bearing seat (7) and a bearing (8); wherein the bearing seat (7) is arranged on the central axis inside the housing (1) and is fixedly connected to the housing (1); the bearing (8) is installed inside the bearing seat (7); and the rotating shaft (2) is arranged at the central axis position inside the housing (1) via the bearing (8).