Biodiesel raw material dehydration device
By setting up a water-oil separation zone and a moisture evaporation zone in the biodiesel raw material dehydration device, and combining the height adjustment component and lifting mechanism, the problems of poor dehydration and inconvenient operation of the existing devices are solved, and efficient double dehydration and convenient membrane replacement are achieved.
Patent Information
- Application Number
- CN202422117859.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-30
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-08-30
AI Technical Summary
The existing biodiesel raw material dehydration device has a simple structure, which leads to poor dehydration effect and inconvenient operation, especially the inconvenient replacement method of the water-oil separation membrane, which affects production efficiency.
A reaction tank body containing a water-oil separation zone and a water evaporation zone is designed. Combined with a height adjustment assembly and a lifting mechanism, the initial separation is performed through a water-oil separator, and then stirred and heated in the water evaporation zone to achieve double dehydration, and the height adjustment assembly is used to facilitate the replacement of the separation filter tank.
The dual dehydration effect of biodiesel raw materials is achieved, the dehydration efficiency is improved, and the replacement process of water-oil separation membrane is simplified, and the working efficiency of the device is improved.
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Figure CN223060931U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of dehydration of biodiesel raw materials, and particularly relates to a dehydration device for biodiesel raw materials. Background Art
[0002] A biodiesel raw material dehydration device is a device or system used to remove moisture from biodiesel raw materials. During the production process of biodiesel, raw materials such as palm acidulated oil, gutter oil, and swill oil usually contain a certain amount of moisture, which will have a negative impact on the production and quality of biodiesel. Therefore, a special dehydration device is needed to remove the moisture in the raw materials.
[0003] A biodiesel dehydration device disclosed in the Chinese utility model patent application publication specification CN209584143U includes a dryer. After the desiccant loses its water absorption capacity, the input of biodiesel is stopped, and the desiccant is directly dried on the device with the dryer to restore its water absorption performance, without the need to replace the desiccant, which makes the operation more convenient and helps to improve production efficiency. However, the existing dehydration device has a relatively simple structure, the water-oil separation membrane needs to be replaced regularly, and the current replacement method is inconvenient, resulting in low overall working efficiency. In view of this, the present utility model is specifically proposed. Summary of the Utility Model
[0004] In order to overcome the above technical defects, the present utility model provides a dehydration device for biodiesel raw materials, which solves the problems of poor dehydration effect and inconvenient operation of existing biodiesel raw material equipment.
[0005] The technical solution adopted by the present utility model is as follows: A dehydration device for biodiesel raw materials includes a reaction tank body, which is divided into a water-oil separation area and a moisture evaporation area from top to bottom. A water-oil separator is movably arranged in the water-oil separation area, a heater is arranged in the moisture evaporation area, and a height adjustment component is installed on the reaction tank body and is connected to the top of the water-oil separator.
[0006] Further, the water-oil separator includes a separation filter tank with an upper opening. The upper part of the separation filter tank is fixedly connected to the height adjustment component. The inner tank wall of the separation filter tank is covered with a water-oil separation membrane, and an electric valve is arranged at the bottom of the separation filter tank.
[0007] Further, a horizontal partition is arranged in the reaction tank body, which divides the reaction tank body into the water-oil separation area and the moisture evaporation area. An oil discharge hole is opened on the horizontal partition. A drain pipe and a ventilation pipe are arranged on the tank wall of the reaction tank body. The drain pipe is located in the water-oil separation area, and a discharge port is arranged at the bottom of the reaction tank body. The ventilation pipe and the discharge port are located in the moisture evaporation area.
[0008] Specifically, the water separated by the water-oil separation membrane can be discharged from the drain pipe. The biodiesel raw material after water-oil separation by the water-oil separation membrane can enter the water evaporation area from the oil drain hole. The water vapor after evaporation of the biodiesel entering the water evaporation area can be discharged through the ventilation pipe. Finally, the dehydrated biodiesel is discharged from the discharge port.
[0009] Further, the height adjustment assembly includes fixed seats arranged opposite to each other. The fixed seats are fixedly connected to the tank wall of the reaction tank body. A cavity is provided in the fixed seats. A vertical guide groove is formed on the cavity wall of the cavity. A lifting device is provided in the cavity. A connecting rod is slidably connected in the vertical guide groove. The outer end of the connecting rod is fixedly connected to the upper part of the separation filter tank. The inner end of the connecting rod is connected to the lifting device.
[0010] Further, the lifting device includes a limiting column and a threaded column arranged opposite to each other. The limiting column is fixedly connected to the inner cavity wall of the fixed seat. The upper end of the threaded column is fixedly connected to the inner cavity wall of the fixed seat. The lower end of the threaded column is connected to a first motor. The first motor is fixedly connected to the inner cavity wall of the fixed seat. The same sliding block is movably sleeved on the limiting column and the threaded column. The connecting rod is an L-shaped rod. The end face of the horizontal part of the L-shaped rod is fixedly connected to the upper part of the separation filter tank. The end face of the vertical part of the L-shaped rod is fixedly connected to the sliding block.
[0011] Specifically, a threaded column is fixedly connected to the output end of the first motor. The sliding block is threaded on the outer surface of the threaded column. When the threaded column rotates, it can drive the sliding block to move up and down, thereby driving the separation filter tank to move to the outside of the first reaction tank, facilitating the replacement of the water-oil separation membrane in the separation filter tank. The specific method of replacing the water-oil separation membrane belongs to the prior art. The outer surface of the sliding block is slidably connected to the fixed seat. The upper surface of the sliding block is fixedly connected to a connecting rod. One end of the connecting rod away from the sliding block is fixedly connected to the separation tank. The connecting rod can drive the separation tank to move together with the sliding block. The outer surface of the connecting rod is slidably connected to the moving groove. A limiting column is fixedly connected to the inside of the fixed seat. The outer surface of the limiting column is slidably connected to the sliding block, facilitating the limitation of the sliding block and enabling it to move up and down stably.
[0012] Further, a rotating shaft is vertically arranged in the water evaporation area. The heater is a strip-shaped heater. A plurality of the strip-shaped heaters are installed on the rotating shaft. The upper end of the rotating shaft is connected to a second motor. The second motor is fixedly connected to the top wall of the water evaporation area. The lower end of the rotating shaft is connected to the bottom wall of the water evaporation area by a bearing.
[0013] Specifically, by driving the heater to rotate with the rotating shaft, the biodiesel raw materials entering the moisture evaporation area can be stirred and heated, so that the moisture evaporates at a lower temperature, improving the dehydration efficiency.
[0014] Furthermore, a scraper is installed on the rotating shaft. The scraper is located at the lower part of the rotating shaft, the strip heater is located at the upper part of the rotating shaft, and the scraper contacts the bottom wall of the moisture evaporation area.
[0015] Specifically, the outer surface of the rotating shaft is fixedly connected with a scraper, and the lower surface of the scraper contacts the bottom of the moisture evaporation area, facilitating scraping off all the biodiesel raw materials at the bottom of the moisture evaporation area and discharging them from the discharge port to avoid residue.
[0016] Furthermore, a support base is provided at the bottom of the reaction tank body.
[0017] Furthermore, it further includes a lifting mechanism. The lifting mechanism includes a fixed base, a hydraulic device is fixedly arranged on the fixed base, and the top of the hydraulic device is fixedly connected with a lifting platform.
[0018] Specifically, the hydraulic device can drive the lifting platform to lift, thereby facilitating lifting the staff to replace the water-oil separation membrane.
[0019] Beneficial effects: Compared with the prior art, the present utility model, by setting a water-oil separation area and a moisture evaporation area, enables the biodiesel raw materials to undergo primary water-oil separation through a water-oil separator in the water-oil separation area, and then enter the moisture evaporation area for stirring and heating to perform secondary dehydration, evaporating the water vapor inside, achieving the effect of double dehydration; by setting a height adjustment component, the movement of the sliding block can drive the connecting rod and the separation filter tank as a whole to rise, separating the separation tank from the reaction tank body, and then using the lifting mechanism to lift the staff, facilitating the rapid cleaning and replacement of the separation filter tank and the water-oil separation membrane, improving the working efficiency of the device. Description of the Drawings
[0020] Figure 1 is the overall structural schematic diagram of the present utility model;
[0021] Figure 2 is Figure 1 the internal structural diagram of;
[0022] Figure 3 is the structural schematic diagram of the height adjustment component;
[0023] Figure 4 is Figure 3 the structural schematic diagram from another angle of;
[0024] Figure 5 is the structural schematic diagram of the moisture evaporation area of the present utility model;
[0025] Figure 6 is Figure 1 the rear view of Specific Embodiments
[0026] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model. It should be noted that all directional indications (such as up, down, left, right, front, rear,...) in the embodiments of the present utility model are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly. In addition, the descriptions involving "first", "second", etc. in the present utility model are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions appears to be contradictory or unable to be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.
[0027] Please refer to Figure 1 , in an embodiment of the present utility model, a biodiesel raw material dehydration device is provided, which includes a reaction tank body 1. The reaction tank body 1 is divided into a water-oil separation area 11 and a water evaporation area 12 from top to bottom. A water-oil separator 2 is movably arranged through the water-oil separation area 11, a heater 604 is arranged in the water evaporation area 12, and a height adjustment component 4 is installed on the reaction tank body 1. The height adjustment component 4 is connected to the top of the water-oil separator 2.
[0028] In a specific embodiment, please refer to Figure 1-2 , the water-oil separator 2 includes a separation filter tank 21 with an upper opening. The upper part of the separation filter tank 21 is fixedly connected to the height adjustment component 4. The inner tank wall of the separation filter tank 21 is covered with a water-oil separation membrane 22. An electric valve 201 is arranged at the bottom of the separation filter tank 21. Opening the electric valve 201 can discharge the biodiesel raw material after water-oil separation; the oil-water separation membrane is usually made of polymer material and can selectively allow water molecules to pass through while blocking oil molecules; when the oil-water mixture passes through the oil-water separation membrane, water molecules can pass through the membrane, while oil molecules are blocked on one side of the membrane, thereby realizing oil-water separation.
[0029] In a specific embodiment, please refer to Figure 1 , in the reaction tank body 1, a horizontal partition plate 13 is provided, and the horizontal partition plate 13 divides the reaction tank body 1 into the water-oil separation area 11 and the water evaporation area 12. In a preferred embodiment, the upper surface of the horizontal partition plate 13 is an inclined surface, which is convenient for the biodiesel raw material to automatically slide into the water evaporation area 12. An oil discharge hole 7 is formed in the horizontal partition plate 13, and the oil discharge hole 7 is arranged near the lower edge of the inclined surface. A drain pipe 8 and a ventilation pipe 607 are arranged on the tank wall of the reaction tank body 1. The drain pipe 8 is located in the water-oil separation area 11, and a discharge port 606 is arranged at the bottom of the reaction tank body 1. The ventilation pipe 607 and the discharge port 606 are located in the water evaporation area 12; the biodiesel raw material after water-oil separation can enter the water evaporation area 12 from the oil discharge hole 7, the separated water can be discharged from the drain pipe 8, the water vapor after evaporation of the biodiesel entering the water evaporation area can be discharged from the ventilation pipe 607, and finally the dehydrated biodiesel is discharged from the discharge port 606.
[0030] In a specific embodiment, the height adjustment assembly 4 includes fixed seats 401 arranged opposite to each other. The fixed seats 401 are fixedly connected to the tank wall of the reaction tank body 1. A cavity is provided in the fixed seats 401, a vertical guide groove 402 is formed in the cavity wall of the cavity, a lifting device is arranged in the cavity, a connecting rod 406 is slidably connected in the vertical guide groove 402, the outer end of the connecting rod 406 is fixedly connected to the upper part of the separation filter tank 21, and the inner end of the connecting rod 406 is connected to the lifting device. Specifically, the lifting device drives the connecting rod to slide in the vertical guide groove, so as to realize the lifting in the vertical direction.
[0031] In a specific embodiment, please refer to Figure 2-3, the lifting device includes a limiting column 407 and a threaded column 404 arranged opposite to each other. The limiting column 407 is fixedly connected to the inner cavity wall of the fixed seat 401. The upper end of the threaded column 404 is fixedly connected to the inner cavity wall of the fixed seat 401. The lower end of the threaded column 404 is connected to a first motor 403, and the first motor 403 is fixedly connected to the inner cavity wall of the fixed seat 401. The limiting column 407 and the threaded column 404 are movably sleeved with the same sliding block 405. The connecting rod 406 is an L-shaped rod. The end face of the horizontal part of the L-shaped rod is fixedly connected to the upper part of the separation filter tank 21, and the end face of the vertical part of the L-shaped rod is fixedly connected to the sliding block 405. Since the bottom inner wall of the fixed seat 401 is fixedly connected with a first motor 403, the output end of the first motor 403 is fixedly connected with a threaded column 404, the sliding block 405 is threaded with the threaded column 404, the sliding block 405 is slidably connected to the fixed seat 401, and the rotation of the threaded column 404 can drive the sliding block 405 to move up and down, so as to drive the separation filter tank 21 to move to the outside of the reaction tank body 1, facilitating the replacement of the water-oil separation membrane 22.
[0032] In a specific embodiment, please refer to Figure 4 , in the water evaporation area 12, a rotating shaft 603 is vertically arranged. The heater 604 is a strip-shaped heater. A plurality of the strip-shaped heaters are installed on the rotating shaft 603. The upper end of the rotating shaft 603 is connected to a second motor 602, and the second motor 602 is fixedly connected to the top wall of the water evaporation area 12. The lower end of the rotating shaft 603 is connected to the bottom wall of the water evaporation area 12 by a bearing. The second motor 602 can drive the rotating shaft 603 to rotate, thereby driving the heater 604 to rotate, and can stir and heat the separated biodiesel raw materials, so that the water evaporates at a lower temperature, improving the dehydration efficiency.
[0033] In a specific embodiment, please refer to Figure 1 and Figure 5 , a scraper 605 is installed on the rotating shaft 603. The scraper 605 is located at the lower part of the rotating shaft 603, the strip-shaped heater is located at the upper part of the rotating shaft 603, and the scraper 605 is in contact with the bottom wall of the water evaporation area 12. The scraper 605 facilitates scraping off all the biodiesel raw materials at the bottom of the water evaporation area 12 and discharging them from the discharge port 606, avoiding residue.
[0034] In a specific embodiment, a support base 9 is provided at the bottom of the reaction tank body 1. Adopting this solution facilitates the stable support of the reaction tank body.
[0035] In a specific embodiment, please refer to Figure 1 and Figure 6, further comprising a lifting mechanism 5, the lifting mechanism 5 includes a fixed base 501, preferably, the fixed base 501 is fixedly connected to the support base 9, a hydraulic device 502 is fixedly arranged on the fixed base 501, and the top end of the hydraulic device 502 is fixedly connected to a lifting platform 503; specifically, the hydraulic device 502 can drive the lifting platform 503 to lift, so as to facilitate driving the staff to rise and take out the water-oil separation membrane 22 in the separation filter tank 21 for replacement.
[0036] The following further illustrates the present utility model in conjunction with a specific application scenario:
[0037] Biodiesel raw material dehydration device, including a reaction tank body 1, in which a horizontal partition 13 is provided. The horizontal partition 13 divides the reaction tank body 1 into a water-oil separation area 11 and a water evaporation area 12. An oil discharge hole 7 is opened on the horizontal partition 13. A drain pipe 8 and a ventilation pipe 607 are provided on the tank wall of the reaction tank body 1. The drain pipe 8 is located in the water-oil separation area 11. An outlet 606 is provided at the bottom of the reaction tank body 1. Solenoid valves are installed on the oil discharge hole 7, the drain pipe 8 and the outlet 606. The ventilation pipe 607 is connected to an exhaust duct or an air extraction device. The ventilation pipe 607 and the outlet 606 are located in the water evaporation area 12; A water-oil separator 2 is movably penetrated in the water-oil separation area 11. A heater 604 is provided in the water evaporation area 12. The reaction tank body 1 is equipped with a height adjustment component 4, and the height adjustment component 4 is connected to the top of the water-oil separator 2. A support base 9 and a lifting mechanism 5 are provided at the bottom of the reaction tank body 1. The lifting mechanism 5 includes a fixed base 501, a hydraulic device 502 is fixedly arranged on the fixed base 501, and the top of the hydraulic device 502 is fixedly connected to a lifting platform 503; A rotating shaft 603 is vertically arranged in the water evaporation area 12. The heater 604 is a strip heater. A plurality of the strip heaters are installed on the upper part of the rotating shaft 603. A scraper 605 is installed on the lower part of the rotating shaft 603. The scraper 605 is in contact with the bottom wall of the water evaporation area 12. The upper end of the rotating shaft 603 is connected to a second motor 602, and the second motor 602 is fixedly connected to the top wall of the water evaporation area 12. The lower end of the rotating shaft 603 is connected to the bottom wall of the water evaporation area 12 by a bearing; The water-oil separator 2 includes a separation filter tank 21 with an upper opening. The upper part of the separation filter tank 21 is fixedly connected to the height adjustment component 4. The inner tank wall of the separation filter tank 21 is covered with a water-oil separation membrane 22. An electric valve 201 is provided at the bottom of the separation filter tank 21; The height adjustment component 4 includes opposed fixed seats 401. The fixed seats 401 are fixedly connected to the tank wall of the reaction tank body 1. A cavity is provided in the fixed seat 401. A vertical guide groove 402 is opened on the wall of the cavity. A lifting device is provided in the cavity. A connecting rod 406 is slidably connected in the vertical guide groove 402. The outer end of the connecting rod 406 is fixedly connected to the upper part of the separation filter tank 21. The inner end of the connecting rod 406 is connected to the lifting device;The lifting device includes a limit post 407 and a threaded post 404 which are oppositely arranged. The limit post 407 is fixedly connected to the inner cavity wall of the fixed seat 401. The upper end of the threaded post 404 is fixedly connected to the inner cavity wall of the fixed seat 401. The lower end of the threaded post 404 is connected to a first motor 403, and the first motor 403 is fixedly connected to the inner cavity wall of the fixed seat 401. The limit post 407 and the threaded post 404 are movably sleeved with the same sliding block 405. The connecting rod 406 is an L-shaped rod. The end face of the horizontal part of the L-shaped rod is fixedly connected to the upper part of the separation filter tank 21, and the end face of the vertical part of the L-shaped rod is fixedly connected to the sliding block 405.
[0038] During use, pour the biodiesel raw material into the separation filter tank 21. The water contained in the biodiesel raw material can be discharged through the water-oil separation membrane 22 and flows away from the drain pipe 8. Then, open the electric valve 201 to allow the biodiesel raw material to flow out, and it flows into the second reaction tank 601 through the oil discharge hole 7. Start the second motor 602 to make the rotating shaft 603 and the heater 604 stir and heat the biodiesel raw material, so that the internal water evaporates and is discharged from the ventilation pipe 607. Finally, discharge through the discharge port 606. When it is necessary to clean or replace the separation filter tank 21 and the water-oil separation membrane 22, start the first motor 403 to drive the threaded post 404 to rotate, so that the sliding block 405 drives the connecting rod 406 and the separation filter tank 21 as a whole to rise, so that the separation filter tank 21 is separated from the reaction tank body 1. Then, the staff can stand on the lifting platform 503 and start the hydraulic device 502 to drive the staff to rise, so as to facilitate the cleaning and replacement of the separation filter tank 21 and the water-oil separation membrane 22.
[0039] Finally, it should be noted that the above description is only the preferred embodiment of the present invention. Those skilled in the art can make various similar representations under the inspiration of the present invention without violating the purpose and claims of the present invention. Such transformations all fall within the protection scope of the present invention.
Claims
1. Biodiesel raw material dehydration device, characterized in that, It includes a reaction tank body (1), which is divided into a water-oil separation area (11) and a water evaporation area (12) from top to bottom. A water-oil separator (2) is movably inserted through the water-oil separation area (11). A heater (604) is provided in the water evaporation area (12). The reaction tank body (1) is equipped with a height adjustment assembly (4), and the height adjustment assembly (4) is connected to the top of the water-oil separator (2).
2. The biodiesel raw material dehydration device according to claim 1, characterized in that: The water-oil separator (2) includes a separation filter tank (21) with an upper opening. The upper part of the separation filter tank (21) is fixedly connected to the height adjustment assembly (4). The inner tank wall of the separation filter tank (21) is covered with a water-oil separation membrane (22). An electric valve (201) is provided at the bottom of the separation filter tank (21).
3. The biodiesel raw material dehydration device according to claim 1, wherein: A horizontal partition plate (13) is provided in the reaction tank body (1). The horizontal partition plate (13) divides the reaction tank body (1) into the water-oil separation area (11) and the water evaporation area (12). An oil discharge hole (7) is opened on the horizontal partition plate (13). A drain pipe (8) and a ventilation pipe (607) are provided on the tank wall of the reaction tank body (1). The drain pipe (8) is located in the water-oil separation area (11). An outlet (606) is provided at the bottom of the reaction tank body (1). The ventilation pipe (607) and the outlet (606) are located in the water evaporation area (12).
4. The biodiesel raw material dehydration device according to claim 2, characterized in that: The height adjustment assembly (4) includes a pair of oppositely arranged fixed seats (401). The fixed seats (401) are fixedly connected to the tank wall of the reaction tank body (1). A cavity is provided in the fixed seat (401). A vertical guide groove (402) is opened on the wall of the cavity. A lifting device is provided in the cavity. A connecting rod (406) is slidably connected in the vertical guide groove (402). The outer end of the connecting rod (406) is fixedly connected to the upper part of the separation filter tank (21). The inner end of the connecting rod (406) is connected to the lifting device.
5. The biodiesel raw material dehydration device according to claim 4, wherein: The lifting device includes a pair of oppositely arranged limit posts (407) and a threaded post (404). The limit posts (407) are fixedly connected to the inner cavity wall of the fixed seat (401). The upper end of the threaded post (404) is fixedly connected to the inner cavity wall of the fixed seat (401). The lower end of the threaded post (404) is connected to a first motor (403). The first motor (403) is fixedly connected to the inner cavity wall of the fixed seat (401). The limit posts (407) and the threaded post (404) are movably sleeved with the same sliding block (405). The connecting rod (406) is an L-shaped rod. The end face of the horizontal part of the L-shaped rod is fixedly connected to the upper part of the separation filter tank (21). The end face of the vertical part of the L-shaped rod is fixedly connected to the sliding block (405).
6. The biodiesel raw material dehydration device according to any one of claims 1-5, characterized in that: A rotating shaft (603) is vertically arranged in the water evaporation area (12). The heater (604) is a strip-shaped heater. A plurality of the strip-shaped heaters are installed on the rotating shaft (603). The upper end of the rotating shaft (603) is connected to a second motor (602). The second motor (602) is fixedly connected to the top wall of the water evaporation area (12). The lower end of the rotating shaft (603) is connected to the bottom wall of the water evaporation area (12) through a bearing.
7. The biodiesel raw material dehydration device according to claim 6, characterized in that: A scraper (605) is installed on the rotating shaft (603). The scraper (605) is located at the lower part of the rotating shaft (603). The strip-shaped heater is located at the upper part of the rotating shaft (603). The scraper (605) is in contact with the bottom wall of the water evaporation area (12).
8. The biodiesel raw material dehydration device according to any one of claims 1-5, characterized in that: A support base (9) is provided at the bottom of the reaction tank body (1).
9. The biodiesel raw material dehydration device according to any one of claims 1-5, characterized in that: It further includes a lifting mechanism (5). The lifting mechanism (5) includes a fixed base (501). A hydraulic device (502) is fixedly arranged on the fixed base (501). The top end of the hydraulic device (502) is fixedly connected to a lifting platform (503).
Citation Information
Patent Citations
Biodiesel dehydration device
CN209584143U