Pressing cold press for porous carbon activated material

Abstract

The utility model discloses a porous carbon activated material pressing cold press. The porous carbon activated material pressing cold press comprises a base, an upper hydraulic cylinder, a die, a fixing column, a lower hydraulic cylinder and a feeding system. The upper hydraulic cylinder comprises an upper pressing ring moving along the inner wall of the mold and is arranged above the mold through the fixing column. The lower hydraulic cylinder comprises a lower pressing ring which moves along the inner wall of the mold and is arranged in the base; the mold is a hollow cylinder and is fixedly arranged on the base; the side end of the lower pressing ring is in close contact with the inner wall of the mold; a discharging port of the feeding system is formed in the position away from the mold by the preset height. And through cooperative work of the hydraulic system and the feeding system, the defect of less feeding is overcome, and efficient and uniform pressing of the porous carbon activated material is also realized.

Description

Technical Field

[0001] This utility model relates to the field of chemical activation of porous carbon technology, and in particular to a porous carbon activation material pressing and refrigeration press. Background Technology

[0002] In the production of activated carbon, chemical activation can be used to prepare porous carbon with a higher specific surface area at lower temperatures, and the control of pore structure is more flexible. By controlling the type, concentration and reaction conditions of chemical reagents, the pore structure and surface properties of carbon can be precisely adjusted, thereby improving the adsorption capacity and electrochemical performance of the material. Therefore, chemical activation is widely used in the preparation of activated carbon.

[0003] The uniform distribution of porous carbon activation material is crucial for the molding and compaction of activated carbon. Existing chemical activation methods for porous carbon often employ either bulk uniform activation or pulverized mixing uniform activation. The former typically involves a longer activation process, where activating agents (such as acids, alkalis, and chlorides) react with the surface or interior of the carbon precursor to gradually remove impurities or disrupt the carbon structure, forming pores. The latter involves uniformly mixing pulverized carbon particles with an activating agent (such as NaOH), allowing the activating agent to react more rapidly with the carbon precursor during heating, removing volatile impurities and forming a porous structure. However, regardless of whether bulk mixing or pulverized mixing is used, the drawback is that the bulk density is around 0.5 g / ml, resulting in a smaller feed volume for the same container volume. Furthermore, the activation equipment is expensive and does not improve equipment utilization.

[0004] Therefore, a new porous carbon activation material equipment is needed to solve the current defect of low feed rate of activation material under the same pot volume. Utility Model Content

[0005] The purpose of this invention is to provide a porous carbon activation material pressing and cooling press to solve the problem of low feed volume under the same pot volume.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A porous carbon activation material pressing and refrigeration press includes a base, an upper hydraulic cylinder, a mold, a fixed column, a lower hydraulic cylinder, and a feeding system. The upper hydraulic cylinder includes an upper pressure ring that moves along the inner wall of the mold and is positioned above the mold via the fixed column. The lower hydraulic cylinder includes a lower pressure ring that moves along the inner wall of the mold and is located within the base. The mold is a hollow column fixed to the base. The side end of the lower pressure ring is in close contact with the inner wall of the mold. The outlet of the feeding system is located at a preset height above the mold.

[0008] Furthermore, the porous carbon activation material press also includes a water pipe and a liquid storage tank; both the upper hydraulic cylinder and the lower hydraulic cylinder are connected to the liquid storage tank via pipes.

[0009] Furthermore, the feeding system includes a hopper, a feeding screw, and a movable support platform; one end of the feeding screw is fixed to any end of the hopper; the feeding screw is fixed to the movable support platform.

[0010] Furthermore, the movable support platform also includes a pressure sensor, a main control circuit board, and a solenoid valve; the pressure sensor and the main control circuit board are located at preset positions on the movable support platform; the solenoid valve is located at one end of the hopper near the feed screw; the main control circuit board is electrically connected to the pressure sensor and the solenoid valve respectively.

[0011] Furthermore, the movable support platform also includes pulleys; at least three pulleys are fixed to the bottom of the movable support platform.

[0012] Furthermore, the porous carbon activated material pressing and cooling press also includes a vibration device; the vibration device includes a vibration motor and a vibration plate; the vibration plate is installed on the top of the lower pressure ring; the vibration motor is fixed on the bottom of the lower pressure ring, and its output shaft is connected to the vibration plate; the main control circuit board is electrically connected to the vibration motor.

[0013] Furthermore, the porous carbon activation material pressing and refrigeration press also includes a conveyor belt; the conveyor belt for conveying materials is laid at the bottom of the inner cavity of the feed screw.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] This invention employs a compaction process. Through the cooperation of an upper pressure ring positioned above the mold and a lower pressure ring positioned below the mold, when the feeding system delivers an appropriate amount of material into the mold, that is, after reaching the top of the lower pressure ring, the upper and lower pressure rings start simultaneously to compact the material into shape. This results in the formed material having a higher density in the same volume than the unformed material, allowing for a higher feed rate and a stronger activation effect, thus greatly improving the activation efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0018] Figure 1 This is a schematic diagram of an embodiment of a porous carbon activation material pressing and cooling press according to the present invention;

[0019] Figure 2 This is a cross-sectional view of an embodiment of a porous carbon activation material pressing and cooling press according to the present invention.

[0020] Illustration: 100, base; 200, upper hydraulic cylinder; 300, mold; 400, fixed column; 500, lower hydraulic cylinder; 600, feeding system; 210, upper pressure ring; 510, lower pressure ring; 610, hopper; 620, feeding screw; 630, movable support platform; 631, pressure sensor; 632, main control circuit board; 633, solenoid valve; 634, pulley. Detailed Implementation

[0021] To make the utility model's objectives, features, and advantages more apparent and understandable, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0022] In the description of this utility model, it should be understood that the terms "upper," "lower," "top," "bottom," "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. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component centrally located at the same time.

[0023] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0024] like Figures 1 to 2As shown, Figure 1 This is a schematic diagram of an embodiment of a porous carbon activation material pressing and cooling press according to the present invention; Figure 2 This is a cross-sectional view of an embodiment of a porous carbon activation material pressing and cooling press according to the present invention.

[0025] Example 1:

[0026] This utility model provides a porous carbon activation material pressing and cooling press. This utility model adopts a compaction process, which improves the thermal conductivity while increasing the amount of material in the pot, and further improves the consistency and uniformity of the porous carbon pore structure.

[0027] like Figure 1 As shown, a porous carbon activation material pressing and refrigeration press includes a base 100, an upper hydraulic cylinder 200, a mold 300, a fixed column 400, a lower hydraulic cylinder 500, and a feeding system 600. The upper hydraulic cylinder 200 includes an upper pressure ring 210 that moves along the inner wall of the mold 300 and is positioned above the mold 300 via the fixed column 400. The lower hydraulic cylinder 500 includes a lower pressure ring 510 that moves along the inner wall of the mold 300 and is positioned inside the base 100. The mold 300 is a hollow column and is fixed to the base 100. The side end of the lower pressure ring 510 is in close contact with the inner wall of the mold 300. The outlet of the feeding system 600 is located at a preset height above the mold 300.

[0028] It should be noted that in this embodiment, the mold 300 has grooves at both ends, and the grooves at both ends are connected to form a channel penetrating the mold 300, facilitating the flow and shaping of materials within the mold 300. The shape of the channel penetrating the mold 300 can be cylindrical, cuboid, or cube, etc. The shape of the upper pressure ring 210 is adapted to the shape of the channel. Preferably, if the channel is cylindrical, then the upper pressure ring 210 should also be a cylinder with the same diameter as the cylinder of the channel. The same applies to the lower pressure ring 510. In this way, under the action of the upper pressure ring 210 and the lower pressure ring 510, the added material is compacted and shaped within the mold 300, resulting in a significantly higher density of the compacted material compared to the uncompacted material in the same volume, thus improving the efficiency for subsequent activation of porous carbon.

[0029] Furthermore, in the above-mentioned device, the feeding system 600 conveys the material into the mold 300. It should be noted that the position of the feeding system 600 should be set so as not to affect the operation of the upper hydraulic cylinder 200 and the lower hydraulic cylinder 500. Then the upper hydraulic cylinder 200 and the lower hydraulic cylinder 500 start to work, compacting and shaping the material, which can then be used for porous carbon chemical activation.

[0030] Through the above embodiments, the combination of the hydraulic system and the feeding system 600 effectively improves the production efficiency, ease of operation, automation level, and product quality of the porous carbon activated material refrigeration press. These designs ensure good material flowability, uniform pressing effect, and reduce clogging and instability factors, thereby improving the efficiency and quality control capabilities of the production process.

[0031] In a preferred embodiment, the upper hydraulic cylinder 200 is fixed to the base 100 by at least three fixing posts 400, ensuring that the upper hydraulic cylinder 200 is firmly installed and perpendicular to the base 100.

[0032] Furthermore, the upper hydraulic cylinder 200 is installed above the mold 300, and its body is connected to the top steel structure of the workshop by bolts to ensure that the upper hydraulic cylinder 200 will not shake during operation. The upper pressure ring 210 is located inside the mold 300, maintaining a certain gap (1-2mm) with the inner wall of the mold 300 to allow for smooth up-and-down movement. The lower hydraulic cylinder 500 is installed inside the base 100, and the lower pressure ring 510 is located inside the mold 300, with its side end in close contact with the inner wall of the mold 300, without any gaps, to prevent material from falling out of the mold 300 under gravity, thus avoiding waste.

[0033] Furthermore, the feeding system 600 is movable. When materials are to be added, the feeding system 600 moves to the side of the mold 300, adjusts its position, and then aligns the outlet of the feeding system 600 with a preset height above the mold 300 to start conveying materials. After the materials are conveyed, the feeding system 600 moves away from the mold 300.

[0034] Furthermore, the porous carbon-activated material pressing and cooling press also includes water pipes and a liquid storage tank; both the upper hydraulic cylinder 200 and the lower hydraulic cylinder 500 are connected to the liquid storage tank via pipes. It should be noted that, to ensure the normal operation of the hydraulic system, the upper hydraulic cylinder 200 and the lower hydraulic cylinder 500 are connected to the liquid storage tank via pipes. This helps to provide a stable hydraulic source and ensure pressure and temperature control during the pressing process. Furthermore, the liquid storage tank is equipped with a liquid level sensor and a temperature sensor. The liquid level sensor is used to monitor the liquid level in the tank in real time, and the temperature sensor is used to monitor the liquid temperature. A filling port is located at the top of the liquid storage tank for easy liquid addition, and a drain port is located at the bottom for periodic discharge of impurities.

[0035] It should be added that both the upper hydraulic cylinder 200 and the lower hydraulic cylinder 500 are hydraulic systems, which are well known to those skilled in the art. They will not be elaborated on in this embodiment. This embodiment uses a hydraulic system to provide pressure.

[0036] Example 2:

[0037] This embodiment is a further supplement to the feeding system 600 in Embodiment 1, such as... Figure 2 The figure shows a cross-sectional view of an embodiment of the porous carbon activation material pressure refrigeration press of the present invention. The feeding system 600 includes a hopper 610, a feeding screw 620 and a movable support platform 630; one end of the feeding screw 620 is fixed to any end of the hopper 610; the feeding screw 620 is fixed on the movable support platform 630.

[0038] It should be noted that the hopper 610 is used to hold materials, and is preferably a cone, with the end of the cone with a smaller cross-section located at one end of the feed screw 620.

[0039] Furthermore, the movable support platform 630 also includes a pressure sensor 631, a main control circuit board 632, and a solenoid valve 633; ​​the pressure sensor 631 and the main control circuit board 632 are disposed at preset positions on the movable support platform 630; the solenoid valve 633 is disposed at one end of the hopper 610 near the feed screw 620; the main control circuit board 632 is electrically connected to the pressure sensor 631 and the solenoid valve 633 respectively.

[0040] It should be noted that, in the preset position, the pressure sensor 631 is located at the bottom of the movable support platform 630, and the main control circuit board 632 and the control panel are separately located in front of the porous carbon-activated material press for cooling, serving as the control center. The control panel is also equipped with buttons for various function modules, such as switches for "main cylinder fast advance", "main cylinder reset", "emergency stop" and "power". Furthermore, when using the pressure sensor 631, it is necessary to deduct the weight of the feed screw 620 beforehand. For example, if 5KG of material is added beforehand, an additional 5KG of weight should be added on top of the weight of the feed screw 620 before adding the 5KG of material, or the pressure sensor 631 should be zeroed after it is fixed in place.

[0041] Furthermore, the movable support platform 630 also includes pulleys 634; at least three pulleys 634 are fixed to the bottom of the movable support platform 630. It should be noted that the feed system 600 can be moved horizontally through the pulleys 634. At this time, manual force needs to be applied to move the feed system 600. Furthermore, in order to achieve automation, a slide rail can be set at a certain distance from the base 100. This distance should be such that when the feed system 600 reaches the end position, it can transport the material into the mold 300. The feed system 600 is slidably connected to the slide rail through the pulleys 634.

[0042] Furthermore, the porous carbon activation material pressing and cooling press also includes a vibration device; the vibration device includes a vibration motor and a vibration plate; the vibration plate is installed on the top of the lower pressure ring 510; the vibration motor is fixed on the bottom of the lower pressure ring 510, and its output shaft is connected to the vibration plate; the main control circuit board 632 is electrically connected to the vibration motor. During the pressing of the porous carbon activation material, according to the material characteristics and pressing process requirements, the main control circuit board 632 controls the vibration motor to vibrate at a certain frequency, transmitting the vibration to the mold 300 through the vibration plate, making the material distribution within the mold 300 more uniform, improving the quality of the pressed product, and avoiding material accumulation or uneven gaps. Simultaneously, the pressure from the upper hydraulic cylinder 200 and the lower hydraulic cylinder 500 further optimizes the pressing effect.

[0043] Furthermore, the porous carbon-activated material pressing and refrigeration press also includes a conveyor belt; the conveyor belt for conveying materials is laid at the bottom of the inner cavity of the feed screw 620. It should be noted that after the hopper 610 conveys a specified mass of material, the material can be further conveyed to the top of the lower pressure ring 510 inside the mold 300 via the conveyor belt.

[0044] This embodiment, through the cooperation of pressure sensor 631, main control circuit board 632, and solenoid valve 633, can accurately control the material feed rate, avoiding excessive or insufficient feeding; the vibration device helps the material to be evenly distributed within the mold 300, ensuring higher quality of the pressed product and avoiding uneven gaps or accumulation problems; the combination of pulley 634 and slide rail system allows the feeding system 600 to be automatically adjusted as needed, improving the flexibility and automation level of the equipment and reducing manual intervention; the conveyor belt system can efficiently and continuously transport materials, and together with the automated control system, improves the overall production efficiency.

[0045] Through these technological innovations and optimizations, this embodiment can effectively improve the working efficiency, accuracy and stability of the porous carbon activated material pressing and cooling press, while also enhancing its ease of operation and flexibility.

[0046] Furthermore, as a preferred embodiment, this system consists of three main parts: a hydraulic press, a mold 300, and a feeding system 600. The first part consists of an upper hydraulic cylinder 200 and a plunger (not shown in the figure), and a lower hydraulic cylinder 500 and a plunger, forming a complete press. The mold 300 consists of an outer mold (not shown in the figure), a lower pressure ring 510, an upper pressure ring 210, and a pressure cylinder (not shown in the figure). In a high-precision press, the pressure cylinder and the upper pressure ring 210 can be fixed to the support plate (not shown in the figure) of the plunger of the upper hydraulic cylinder 200, which can reduce the handling steps and improve efficiency. The feeding system 600 consists of a feeding screw 620, a hopper 610, and a movable support platform 630, wherein the movable support platform 630 is equipped with a weighing and quantitative feeding device.

[0047] The working process of this porous carbon-activated material pressing and cooling press is as follows: The mixed material is added to the hopper 610, which is protected by dryness and inert gases such as nitrogen. Using the movable support platform 630, the feed inlet of the feed screw 620 is aligned with the center of the mold 300. The mold 300 is pre-installed with the lower pressure ring 510 to ensure no material leakage. Based on the specified weight displayed by the pressure sensor 631, a quantitative amount of material is loaded. Once the specified loading amount is reached, the feeding system 600 is pushed away from the working platform. The upper pressure ring 210 and the pressure cylinder are placed on top. The upper hydraulic cylinder 200 pushes the plunger, causing the pressure cylinder and upper pressure ring 210 to slowly press down, compressing the material to the specified pressure. This pressure is maintained for a set time, completing the pressing process and proceeding to the next stage, demolding. The upper hydraulic cylinder 200 and plunger slowly move upwards, releasing pressure and moving to the upper limit position, then the pressure cylinder is removed. The lower hydraulic cylinder 500 pushes the plunger against the lower pressure ring 510 and the compacted material, slowly rising to the upper pressure ring 210. The material is completely removed from the outer mold. After removing the upper pressure ring 210 and the material, the remaining material is cleaned up, thus completing the entire pressing process. After cleaning, the filling material is loaded, and the next round of pressing process continues.

[0048] In a preferred embodiment, the mixed KOH and carbon powder is added to the hopper 610. The movable support platform 630 is moved so that the outlet of the feed screw 620 is aligned with the center of the mold 300 with the pressure ring 210 already attached. 5 kg of material is quantitatively added by the feed screw 620, and after the material is leveled, it is removed from the worktable. The upper pressure ring 210 and the pressure cylinder are placed in the center in sequence. Driven by the upper hydraulic cylinder 200, the material is slowly pressed downwards. After the pressure reaches 60 MPa, it is held for 15 minutes. The upper hydraulic cylinder 200 slowly rises to its upper limit, and driven by the lower hydraulic cylinder 500, the compacted material and the lower pressure ring 510 slowly rise above the mold 300. The material is then demolded, placed properly, and the mold 300 is cleaned before the next batch of pressing can begin. The density of the compacted material changes from an initial loose density of 0.5 g / ml to 1.5 g / ml, resulting in a 2-fold increase in processing efficiency.

[0049] In a preferred embodiment, the mixed powder of NaOH and carbon powder is added to the hopper 610. The movable support platform 630 is moved so that the outlet of the feed screw 620 is aligned with the center of the mold 300 with the pressure ring 210 already attached. 5 kg of material is quantitatively added by the feed screw 620, and after the material is leveled, it is removed from the worktable. The upper pressure ring 210 and the pressure cylinder are placed in the center in sequence. Driven by the upper hydraulic cylinder 200, the material is slowly pressed downwards. After the pressure reaches 60 MPa, it is held for 15 minutes. The upper hydraulic cylinder 200 slowly rises to its upper limit, and driven by the lower hydraulic cylinder 500, the compacted material and the lower pressure ring 510 slowly rise above the mold 300. The material is then demolded, placed properly, and the mold 300 is cleaned before the next batch of pressing can begin. The density of the compacted material changes from an initial loose density of 0.5 g / ml to 1.5 g / ml, resulting in a 2-fold increase in processing efficiency.

[0050] Compared to using the ordinary feeding method, the loose density is only 0.5g / ml for the same volume, and the processing efficiency is only 1 / 3 of that after compaction.

[0051] In a preferred embodiment, the mixed ZnCl2 and carbon powder is added to the hopper 610. The movable support platform 630 is moved so that the outlet of the feed screw 620 is aligned with the center of the mold 300 with the pressure ring 210 already attached. 5 kg of material is added quantitatively by the feed screw 620, and after the material is leveled, it is removed from the worktable. The upper pressure ring 210 and the pressure cylinder are then placed in the center. Driven by the upper hydraulic cylinder 200, the material is slowly pressed downwards. After the pressure reaches 60 MPa, it is held for 15 minutes. The upper hydraulic cylinder 200 slowly rises to its upper limit, and driven by the lower hydraulic cylinder 500, the compacted material and the lower pressure ring 510 slowly rise above the mold 300. The material is then demolded, placed properly, and the mold 300 is cleaned before the next batch of pressing can begin. The density of the compacted material changes from an initial loose density of 0.5 g / ml to 1.5 g / ml, resulting in a 2-fold increase in processing efficiency.

[0052] Currently, chemical activation of porous carbon mostly involves direct feeding, resulting in loose materials, low packing density, and poor thermal conductivity. This leads to slow activation efficiency and temperature gradients, causing uneven pore structure in the porous carbon. This invention employs a compaction process, increasing the packing density while also improving thermal conductivity, further enhancing the consistency and uniformity of the porous carbon's pore structure.

[0053] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this 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 of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A press for a porous carbon activation charge, characterized in that, The porous carbon activation material pressing and cooling machine comprises a base, an upper hydraulic cylinder, a mold, a fixing column, a lower hydraulic cylinder and a feeding system; The upper hydraulic cylinder comprises an upper pressing ring moving along the inner wall of the mold and is arranged above the mold through the fixing column; The lower hydraulic cylinder comprises a lower pressing ring moving along the inner wall of the mold and is arranged in the base; The mold is a hollow cylinder fixed on the base; The side end of the lower pressing ring is in close contact with the inner wall of the mold; The discharge port of the feeding system is arranged at a position away from the mold by a preset height.

2. The pressed cold-press machine for porous carbon activation material according to claim 1, characterized by The porous carbon activation material pressing and cooling machine further comprises a water pipe and a liquid storage tank; The upper hydraulic cylinder and the lower hydraulic cylinder are both connected with the liquid storage tank through pipelines.

3. The pressed cold-press machine for porous carbon activation material according to claim 1, characterized by The feeding system comprises a hopper, a feeding screw and a movable support table; One end of the feeding screw is fixed with any one end of the hopper; The feeding screw is fixed on the movable support table.

4. The pressed cold-press machine for porous carbon activation material according to claim 3, characterized by The movable support table further comprises a pressure sensor, a main control circuit board and an electromagnetic valve; The pressure sensor and the main control circuit board are arranged at a preset position of the movable support table; The electromagnetic valve is arranged at one end of the hopper close to the feeding screw; The main control circuit board is electrically connected with the pressure sensor and the electromagnetic valve respectively.

5. The pressed cold-press machine for porous carbon activation material according to claim 4, characterized by The movable support table further comprises a pulley; At least three pulleys are fixed on the bottom of the movable support table.

6. The pressed cold-press machine for porous carbon activation material according to claim 5, characterized by The porous carbon activation material pressing and cooling machine further comprises a vibration device; The vibration device comprises a vibration motor and a vibration plate; The vibration plate is installed on the top of the lower pressing ring; The vibration motor is fixed on the bottom of the lower pressing ring, and its output shaft is connected with the vibration plate; The main control circuit board is electrically connected with the vibration motor.

7. The pressed cold-press machine for porous carbon activation material according to claim 3, characterized by The porous carbon activation material pressing and cooling machine further comprises a conveying belt; The conveying belt for conveying materials is laid on the bottom of the inner cavity of the feeding screw.

Images