Small movable liquid paperboard filtering device
By designing a small, mobile liquid paperboard filtration device, the problems of location limitations and cleaning difficulties in small-scale trials of plate and frame filter presses were solved, achieving flexible location adaptability and efficient solid-liquid separation, and reducing maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YIHAI KERRY (LIANYUNGANG) CHEM IND CO LTD
- Filing Date
- 2025-05-16
- Publication Date
- 2026-04-24
AI Technical Summary
Existing plate and frame filter presses are not suitable for small-scale trials, require special locations, equipment and personnel, and are troublesome to clean. In addition, traditional filtration devices are wasteful and have location limitations.
A small, portable liquid paperboard filtration device was designed. It uses a mobile cart with wheels at the bottom, and the outer shell is equipped with an operation port and a transparent acrylic door. The filtration mechanism is detachable and utilizes the principle of gravity filtration. The filtrate collection box collects the filtrate in a centralized manner. The overall structure is compact and easy to clean.
It enables flexible site adaptability for small-scale trials, simplifies filtration operations, reduces cleaning steps and maintenance costs, meets diverse filtration needs, and is suitable for experimental production and small-batch material handling.
Smart Images

Figure CN224156474U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of filtration equipment technology, specifically a small, portable liquid paperboard filtration device. Background Technology
[0002] In the fermentation industry, solid-liquid separation is often required to extract target products. Plate and frame filter presses are mainly used in the fermentation industry to separate the solid and liquid of fermentation broth. However, plate and frame filter presses are mostly suitable for medium and large-scale production sites, and filter aids need to be added to the material. The cleaning of the cloth is relatively troublesome, requiring special places, equipment and personnel. Moreover, material residues may still remain after cleaning, resulting in waste. Therefore, it is not suitable for small-scale experiments.
[0003] Therefore, we are trying to develop a simple, small, portable liquid paperboard filter that can meet both basic filtration needs and small-scale experimental needs, and whose application location is not limited and can be flexibly changed. Utility Model Content
[0004] The technical problem to be solved by this utility model is to address the shortcomings of the existing technology by providing a liquid paperboard filter device that is easy to install and disassemble and can be replaced during filtration operations.
[0005] The technical problem to be solved by this utility model is achieved through the following technical solution: a small, movable liquid paperboard filtration device, which includes a mobile cart with wheels at the bottom, and a device mounted on the mobile cart;
[0006] The outer casing is fixed to the top surface of the mobile vehicle, and an operating port is provided on one vertical surface of the outer casing;
[0007] Several sets of filtering mechanisms are placed inside an outer casing. Each set of filtering mechanisms includes a horizontally arranged mounting frame and a filter frame. The outer wall edge of the mounting frame is detachably mounted on the inner wall of the outer casing. An mounting opening is provided in the middle of the mounting frame. The filter frame overlaps the edge of the mounting opening and filter paper is embedded in the filter frame.
[0008] The material box is installed on the top surface of the outer casing. A feeding port and an inspection port are opened on the top of the material box. Several discharge pipes are installed at the bottom of the material box. The outlet end of the discharge pipe extends through to the top of the outer casing and is located directly above the filter paper, so as to transport the liquid in the material box to the filter paper for gravity filtration.
[0009] The filtrate collection box is placed inside the outer casing and directly below the filter paper to collect the filtered filtrate.
[0010] The technical problem to be solved by this utility model can also be achieved through the following technical solution: the small movable liquid paperboard filter device described above has two transparent acrylic doors hinged to the side wall of the operation port.
[0011] The technical problem to be solved by this utility model can also be achieved through the following technical solution: the small movable liquid paperboard filter device described above has an installation plate vertically fixed on the inner wall of the outer casing, and several bolt holes are vertically opened on the side wall of the installation plate and the installation frame. The installation frame is detachably installed on the installation plate by bolts.
[0012] The technical problem to be solved by this utility model can also be achieved through the following technical solution: the small movable liquid paperboard filtration device described above, wherein the filter paper is cellulose filter paper.
[0013] The technical problem to be solved by this utility model can also be achieved through the following technical solution: In the small movable liquid paperboard filter device described above, a support leg is fixedly installed on the bottom surface of the material box, and the support leg is screwed to the top surface of the outer casing.
[0014] The technical problem to be solved by this utility model can also be achieved through the following technical solution: the small movable liquid paperboard filter device described above, wherein a hand valve is installed on the discharge pipe.
[0015] Compared with the prior art, the beneficial technical effects of this utility model are:
[0016] (1) This utility model uses a mobile vehicle with wheels at the bottom as the main body of the device, which makes the entire filtration device easy to move to different workplaces. It is especially suitable for small-scale trials or temporary production needs. The operation port on the outer shell is equipped with a transparent acrylic door, which makes it easy to observe the filtration process and to quickly disassemble and replace the filter paper or clean the filtrate collection box. This significantly improves the convenience of operation and site adaptability, and solves the problem of fixed location limitation of traditional plate and frame filter press.
[0017] (2) The filter mechanism is a detachable structure. The mounting frame and filter frame are fixed by bolts. Different filter frames can be replaced to meet the filtration requirements of different filter papers and satisfy diverse filtration needs. The material box distributes the liquid evenly to the surface of the filter paper through multiple discharge pipes. It achieves efficient solid-liquid separation by using the principle of gravity filtration. No filter aid is needed, which saves costs and avoids the tedious steps of traditional cloth cleaning. It is especially suitable for experimental production or small batch material processing.
[0018] (3) The filtrate collection box can collect the filtrate in a concentrated manner, reducing dripping pollution. At the same time, the outer shell's closed design further prevents liquid splashing during operation. The overall structure is compact, requiring no special cleaning equipment, reducing maintenance costs. It meets the requirements for cleanliness and efficient resource utilization in small-scale experiments and is highly practical. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the main structure of this utility model;
[0020] Figure 2 This is an exploded view of the filtration mechanism of this utility model.
[0021] Figure label:
[0022] 1. Wheels; 2. Mobile vehicle; 3. Outer casing; 4. Operating port; 5. Transparent acrylic door; 6. Filter paper; 7. Mounting plate; 8. Mounting frame; 9. Filter frame; 10. Mounting port; 11. Material bin; 12. Feeding port; 13. Inspection port; 14. Discharge pipe; 15. Hand valve; 16. Support legs; 17. Filtrate collection box. Detailed Implementation
[0023] The specific technical solutions of this utility model are further described below with reference to the accompanying drawings, so as to enable those skilled in the art to further understand this utility model, without constituting a limitation on its rights.
[0024] Example, refer to Figure 1-2 A small, portable liquid paperboard filtration device includes a mobile cart 2 with wheels 1 at the bottom. The mobile cart 2 is formed into a generally square plate structure. The wheels 1 can be casters. Wheels 1 with parking function can be purchased according to usage requirements. This design allows the entire filtration device to be easily moved to different workplaces, which is particularly suitable for small-scale trials or temporary production needs. The mobile cart 2 is equipped with:
[0025] The outer casing 3 is formed into a roughly square shell structure. The outer casing 3 is fixed to the top surface of the mobile vehicle 2. An operation port 4 is opened on one vertical surface of the outer casing 3. The operation port 4 can be a square opening. Two transparent acrylic doors 5 are hinged to the side wall of the operation port 4. The transparent acrylic doors 5 are used to facilitate the observation of the entire filtration process by the staff. This allows the filtration operation to be less affected by external factors while also allowing the staff to observe the filtration effect of the current specification and model of filter paper 6. The transparent acrylic doors 5 can be a square plate structure. An installation plate 7 is vertically fixed on the inner wall of the vertical surface of the outer casing 3. The installation plate 7 can be welded to the inner wall of the outer casing 3. The installation plate 7 is formed into a roughly square plate structure. Its design purpose is to increase the thickness of the outer casing 3, thereby providing the thickness for the subsequent bolt holes and facilitating the fixation of the installation frame 8. Several bolt holes are vertically opened on the side walls of the installation plate 7 and the installation frame 8. The number of bolt holes can be selected according to the usage requirements. The installation frame 8 is detachably installed on the installation plate 7 by bolts.
[0026] It should be noted that since the mounting plate 7 has bolt holes along the vertical direction, the installation height of the mounting frame 8 is adjustable, and users can choose the installation height according to their needs.
[0027] Several sets of filter mechanisms are provided, the number of which can be selected according to the usage requirements. They are placed inside the outer casing 3. Each set of filter mechanisms includes a horizontally arranged mounting frame 8 and a filter frame 9. The outer edge of the mounting frame 8 is detachably mounted on the inner wall of the outer casing 3. Different filter frames 9 can be replaced to meet the filtration requirements of different filter papers 6, satisfying diverse filtration needs. The mounting frame 8 is formed into a roughly square plate structure. An installation opening 10 is provided in the middle of the mounting frame 8. The installation opening 10 is a square opening. The filter frame 9 overlaps the edge of the installation opening 10. Filter paper 6 is embedded in the filter frame 9. The filter paper 6 is cellulose filter paper.
[0028] The material box 11 is formed into a roughly square box structure and is installed on the top surface of the outer casing 3. A feeding port 12 and an inspection port 13 are provided on the top of the material box 11. The inspection port 13 is a circular opening. Several discharge pipes 14 are installed at the bottom of the material box 11. The number of discharge pipes 14 can be selected according to the usage requirements. A hand valve 15 is installed on the discharge pipe 14. The operator can adjust the opening of the hand valve 15 according to the usage requirements to control the discharge of liquid in the discharge pipe 14. The outlet end of the discharge pipe 14 extends to the top of the outer casing 3 and is located directly above the filter paper 6, so as to transport the liquid in the material box 11 to the filter paper 6 for gravity filtration.
[0029] A support leg 16 is fixedly installed on the bottom surface of the material box 11. The support leg 16 is formed into a roughly trapezoidal plate structure. Its design purpose is to support the material box 11. The support leg 16 is screwed to the top surface of the outer cover 3.
[0030] The filtrate collection box 17 is formed into a roughly square box-shaped structure with an opening at the top and a discharge port on the bottom side wall. It is placed inside the outer casing 3 and located directly below the filter paper 6 to collect the filtered filtrate.
[0031] The usage process of the small portable liquid paperboard filter device in Example 1 is as follows:
[0032] (1) First, move the filter device to the target working position using the universal wheels at the bottom, and lock the parking function of the wheels 1 to ensure stability. Select filter frames 9 with different types of filter paper 6 according to the filtration requirements, and place the filter frames 9 on the mounting port 10 of the mounting frame 8. Fix the mounting frame 8 to the mounting plate 7 with bolts, and adjust its height to adapt to different filtration conditions.
[0033] (2) Inject the liquid to be filtered into the material box 11. Control the liquid flow rate by adjusting the hand valve 15 on the discharge pipe 14 so that the liquid flows evenly to the surface of the filter paper 6. Use its own weight to separate the solid and liquid. The transparent acrylic door 5 makes it easy to observe the filtration status in real time. If the filter paper 6 is blocked or the filtration efficiency decreases, the feeding can be stopped and the filter paper 6 can be replaced. After the filtrate permeates through the filter paper 6, it drips into the filtrate collection box 17 below to complete the collection.
[0034] (3) After filtration is completed, close the hand valve 15 to stop feeding, open the operating door of the outer casing 3, take out the filtrate collection box 17 and discharge the filtrate through its discharge port. The waste filter paper 6 can be directly replaced, avoiding the traditional filter cloth cleaning steps. If it is necessary to switch the filter medium or adjust the filter level, the installation frame 8 can be disassembled and replaced with a filter frame 9 of different specifications. After cleaning the residual droplets inside the outer casing 3, the device can be put into use again or moved to a new work site.
Claims
1. A small, portable liquid paperboard filtration device, characterized in that: It includes a mobile vehicle with wheels at the bottom, and is equipped with; The outer casing is fixed to the top surface of the mobile vehicle, and an operating port is provided on one vertical surface of the outer casing; Several sets of filtering mechanisms are placed inside an outer casing. Each set of filtering mechanisms includes a horizontally arranged mounting frame and a filter frame. The outer wall edge of the mounting frame is detachably mounted on the inner wall of the outer casing. An mounting opening is provided in the middle of the mounting frame. The filter frame overlaps the edge of the mounting opening and filter paper is embedded in the filter frame. The material box is installed on the top surface of the outer casing. A feeding port and an inspection port are opened on the top of the material box. Several discharge pipes are installed at the bottom of the material box. The outlet end of the discharge pipe extends through to the top of the outer casing and is located directly above the filter paper, so as to transport the liquid in the material box to the filter paper for gravity filtration. The filtrate collection box is placed inside the outer casing and directly below the filter paper to collect the filtered filtrate.
2. The small, portable liquid paperboard filtration device according to claim 1, characterized in that: Two transparent acrylic doors are hinged to the side wall of the operating port.
3. The small, portable liquid paperboard filtration device according to claim 1, characterized in that: A mounting plate is vertically fixed on the inner wall of the outer casing. Several bolt holes are vertically opened on the mounting plate and the side wall of the mounting frame. The mounting frame is detachably mounted on the mounting plate by bolts.
4. The small, portable liquid paperboard filtration device according to claim 1, characterized in that: The filter paper is cellulose filter paper.
5. A small, portable liquid paperboard filtration device according to claim 1, characterized in that: The bottom surface of the material box is fixedly installed with support legs, which are screwed to the top surface of the outer casing.
6. A small, portable liquid paperboard filtration device according to claim 1, characterized in that: A manual valve is installed on the discharge pipe.