Pneumatic clutch scraper device
The automatic control of the scraper blade and the floating round mesh cage surface is achieved through the pneumatic clutch scraper device, which solves the problem of serious wear of the scraper blade, extends the service life of the equipment and reduces maintenance costs.
Patent Information
- Application Number
- CN202422445445.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-10
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-10-10
AI Technical Summary
In existing scraper devices, the scraper blade contacts and friction with the surface of the floating round mesh cage leads to severe wear and shortens the service life.
A pneumatic clutch scraper device is designed to automatically contact and separate the surface of the floating circular mesh cage through the cylinder drive cylinder, and the air pressure is controlled by limit adjustment components and speed control valves to achieve accurate fit and separation between the scraper blade and the surface of the floating circular mesh cage.
It reduces the contact time between the scraper blade and the floating round mesh cage surface, reduces wear, extends the service life of the equipment, and reduces maintenance costs.
Smart Images
Figure CN223170471U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of scraper devices, and particularly relates to a pneumatic clutch scraper device. Background Art
[0002] A double-cylinder screen thickener includes a fixed cylinder screen cage and a floating cylinder screen cage arranged in a box body. During operation, most of the pulp is concentrated by the double-cylinder screen thickener and adheres to the surface of the fixed cylinder screen cage and is taken out by the fixed cylinder screen cage. However, there is still a small amount of pulp adhering to the surface of the floating cylinder screen cage, and it is difficult to clean and remove. Therefore, a scraper device needs to be provided to scrape off the pulp adhering to the surface of the floating cylinder screen cage.
[0003] In the existing scraper device, the scraping blade is always in contact with and rubs against the surface of the floating cylinder screen cage, which easily causes wear of the scraping blade and the screen on the surface of the floating cylinder screen cage in contact with the scraping blade, greatly shortening the service life of the scraping blade and the screen of the floating cylinder screen cage.
[0004] Since there is very little pulp adhering to the surface of the floating cylinder screen cage, it is not necessary for the scraping blade to always be in contact with the screen of the floating cylinder screen cage for scraping. Therefore, it is necessary to develop a pneumatic clutch scraper device to solve the problems existing in the prior art that the scraping blade is always in contact with and rubs against the surface of the floating cylinder screen cage. Content of the Utility Model
[0005] The purpose of the utility model is to provide a pneumatic clutch scraper device, and the specific technical solution is as follows:
[0006] A pneumatic clutch scraper device is used to scrape off the pulp adhering to the surface of the floating cylinder screen cage. The floating cylinder screen cage is rotatably arranged in the box body through an installation bearing seat; the pneumatic clutch scraper device includes a gas supply component, a solenoid valve, a cylinder, a transmission component, a scraping blade, and a limit adjustment component; the gas supply component is communicated with the cylinder through the solenoid valve; the fixed end of the cylinder is hinged to an installation seat arranged on the box body, and the piston rod is connected to the scraping blade through the transmission component; the scraping blade is arranged along the axial direction of the floating cylinder screen cage, and the transmission component is driven by the extension or retraction of the piston rod to drive the scraping blade to approach or move away from the surface of the floating cylinder screen cage; the limit adjustment component is arranged on the installation bearing seat and is used to limit the transmission component.
[0007] Optionally, the limit adjustment component includes a limit adjustment rod; an installation hole for installing the limit adjustment rod is arranged on the box body; an external thread is arranged on the limit adjustment rod; an internal thread adapted to the external thread of the limit adjustment rod is arranged on the inner wall of the installation hole.
[0008] Optionally, the limit adjustment component further includes a limit block; the limit block is arranged at one end of the limit adjustment rod away from the installation hole.
[0009] Optionally, the transmission assembly includes a fixed seat, a connecting bearing, a rotating shaft and a connecting rod; the fixed seat is arranged on the box body and above the piston rod; the connecting bearing is arranged on the fixed seat; one end of the rotating shaft is arranged in the box body and connected to the scraping blade, and the other end passes through the connecting bearing and is connected to one end of the connecting rod; the other end of the connecting rod is connected to the piston rod.
[0010] Optionally, the pneumatic clutch scraping device further includes a first speed regulating valve and a pressurizing pipeline; one end of the pressurizing pipeline is communicated with the electromagnetic valve, and the other end is communicated with the chamber at the end of the cylinder away from the piston rod; the first speed regulating valve is arranged on the pressurizing pipeline.
[0011] Optionally, the pneumatic clutch scraping device further includes a second speed regulating valve and a pressure relief pipeline; one end of the pressure relief pipeline is communicated with the electromagnetic valve, and the other end is communicated with the chamber at the end of the cylinder where the piston rod is located; the second speed regulating valve is arranged on the pressure relief pipeline.
[0012] Optionally, the electromagnetic valve includes any one of a five-port two-position electromagnetic valve and a five-terminal four-way electromagnetic valve.
[0013] Optionally, the air supply component includes a pneumatic combination unit.
[0014] Optionally, the pneumatic combination unit includes a pipe-free air filter and an air pressure reducing valve; a pressure gauge is arranged on the air filter.
[0015] Optionally, the pneumatic clutch scraping device further includes a PLC control system; a PLC controller is arranged in the PLC control system, and the PLC controller is connected to the air filter, the air pressure reducing valve and the electromagnetic valve.
[0016] Applying the technical solution of the present invention has at least the following beneficial effects:
[0017] (1) A pneumatic clutch scraper device provided by the present utility model can automatically control the separation and contact of the scraping blade from the surface of the floating circular mesh cage. While ensuring the scraping effect on the surface of the floating circular mesh cage, it greatly reduces the contact time between the scraping blade and the surface of the floating circular mesh cage, significantly reduces the wear on the surface of the floating circular mesh cage and the wear on the scraping blade, improves the service life of the scraping blade and the floating circular mesh cage, reduces the equipment use and maintenance costs, and improves the economic benefits. When it is necessary to scrape off the slurry adhering to the surface of the floating circular mesh cage, the air supply component provides air source for the solenoid valve. The air source enters the chamber at the end of the cylinder away from the piston rod through the solenoid valve, and pushes the piston rod to extend to drive the transmission component to drive the scraping blade to approach and fit onto the surface of the floating circular mesh cage; the scraping blade is limited by the limit adjustment component to achieve that the scraping blade just fits onto the surface of the floating circular mesh cage, avoiding scratching the floating circular mesh cage by the scraping blade; during the process of pushing the piston rod to extend, the gas in the chamber at the end of the cylinder where the piston rod is located is compressed and flows out through the solenoid valve at the same time; when the slurry on the surface of the floating circular mesh cage is scraped off, the air supply component provides air source for the solenoid valve. The air source enters the chamber at the end of the cylinder where the piston rod is located through the solenoid valve, and pushes the piston rod to move into the cylinder (i.e., retract) to drive the transmission component to drive the scraping blade away from the surface of the floating circular mesh cage, realizing the separation of the scraping blade from the surface of the floating circular mesh cage; during the process of the piston rod retracting, the gas in the chamber at the end of the cylinder away from the piston rod is compressed and flows out through the solenoid valve at the same time.
[0018] (2) In the present utility model, a first speed regulating valve and a pressurizing pipeline are provided. When it is necessary to scrape off the slurry adhering to the surface of the floating circular mesh cage, the air source enters the chamber at the end of the cylinder away from the piston rod smoothly through the solenoid valve, then through the pressurizing pipeline and the first speed regulating valve, and smoothly pushes the piston rod to extend to drive the scraping blade to approach and fit onto the surface of the floating circular mesh cage, avoiding the impact of the scraping blade on the surface of the floating circular mesh cage caused by unstable air source pressure.
[0019] (3) In the present utility model, a second speed regulating valve and a pressure relief pipeline are provided. When the slurry on the surface of the floating circular mesh cage is scraped off, the air source enters the chamber at the end of the cylinder where the piston rod is located smoothly through the solenoid valve, then through the pressure relief pipeline and the second speed regulating valve, and smoothly pushes the piston rod to move into the cylinder to drive the scraping blade away from the surface of the floating circular mesh cage, realizing the separation of the scraping blade from the surface of the floating circular mesh cage, avoiding the impact of the scraping blade on the surface of the floating circular mesh cage caused by unstable air source pressure.
[0020] In addition to the purposes, features and advantages described above, the present utility model has other purposes, features and advantages. The following will refer to the drawings to further describe the present utility model in detail. Description of the Drawings
[0021] The attached drawings, which form a part of this application, are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions of the present utility model are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:
[0022] Figure 1 is a schematic structural diagram of a pneumatic clutch blade device in an embodiment of the present utility model;
[0023] Figure 2 is a schematic diagram of the air source operation principle of a pneumatic clutch blade device in an embodiment of the present utility model;
[0024] Among them, 1. Air supply component, 2. Solenoid valve, 3. Cylinder, 3.1. Piston rod, 4. Blade, 5. Limit adjustment component, 6. Mounting seat, 7. Fixed seat, 8. Connecting bearing, 9. Connecting rod, 10. First speed control valve, 11. Pressurizing pipeline, 12. Second speed control valve, 13. Pressure relief pipeline, W. Surface of the floating circular screen cage. Detailed implementation manners
[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the attached 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 belong to the scope of protection of the present utility model.
[0026] Embodiment:
[0027] Refer to Figure 1 - Figure 2 , a pneumatic clutch blade device for scraping the slurry attached to the surface W of the floating circular screen cage. The floating circular screen cage is rotatably arranged in a box body (not shown in the figure) through a mounting bearing seat (not shown in the figure); the pneumatic clutch blade device includes an air supply component 1, a solenoid valve 2 (specifically a five-port four-way solenoid valve), a cylinder 3, a transmission component, a blade 4 and a limit adjustment component 5; the air supply component 1 is communicated with the cylinder 3 through the solenoid valve 2; the fixed end of the cylinder 3 is hinged to a mounting seat 6 arranged on the box body, and the piston rod 3.1 is connected to the blade 4 through the transmission component; the blade 4 is arranged along the axial direction of the floating circular screen cage, and the transmission component is driven by the extension or retraction of the piston rod 3.1 to drive the blade 4 to approach or move away from the surface of the floating circular screen cage; the limit adjustment component 5 is arranged on the box body and is used for limiting the transmission component, and further limiting the blade 4, so that the blade just fits the surface of the floating circular screen cage, avoiding scratching the floating circular screen cage by the blade.
[0028] The limit adjustment component 5 includes a limit adjustment rod; an installation hole for installing the limit adjustment rod is provided on the box body; an external thread is provided on the limit adjustment rod; an internal thread adapted to the external thread of the limit adjustment rod is provided on the inner wall of the installation hole; when the limit adjustment rod is adjusted by screwing in or out to be close to and fit against the mesh surface of the floating circular mesh cage, the limit of the transmission component is achieved.
[0029] The limit adjustment component 5 further includes a limit block; the limit block is arranged at one end of the limit adjustment rod away from the installation hole and is used to achieve the limit of the transmission component and the blade 4.
[0030] The transmission component includes a fixed seat 7, a connecting bearing 8, a rotating shaft and a connecting rod 9; the fixed seat 7 is arranged on the box body and is located above the piston rod 3.1; the connecting bearing 8 is arranged on the fixed seat 7; one end of the rotating shaft is arranged in the box body and is connected to the blade 4, and the other end passes through the connecting bearing 8 and is connected to one end of the connecting rod 9; the other end of the connecting rod 9 is connected to the piston rod 3.1 and is used to provide a driving force for the blade 4 to approach or move away from the mesh surface of the floating circular mesh cage.
[0031] The pneumatic clutch blade device further includes a first speed regulating valve 10 and a pressurizing pipeline 11; one end of the pressurizing pipeline 11 is communicated with the solenoid valve 2, and the other end is communicated with the chamber at one end of the cylinder 3 away from the piston rod 3.1; the first speed regulating valve 10 is arranged on the pressurizing pipeline 11.
[0032] The pneumatic clutch blade device further includes a second speed regulating valve 12 and a pressure relief pipeline 13; one end of the pressure relief pipeline 13 is communicated with the solenoid valve 2, and the other end is communicated with the chamber at one end of the cylinder 3 where the piston rod 3.1 is located; the second speed regulating valve 12 is arranged on the pressure relief pipeline 13.
[0033] The air supply component 1 includes a pneumatic combination unit. Among them, the pneumatic combination unit refers to a component formed by connecting an air filter and an air pressure reducing valve without a pipe; the air pressure reducing valve is used to stabilize the air source pressure so that the air source is in a constant state, which can reduce the damage to hardware such as valves or actuators caused by sudden changes in the air source pressure. The air filter is used to clean the air source and can filter the moisture in the compressed air to prevent the moisture from entering the device with the gas; a pressure gauge is arranged on the air filter.
[0034] The pneumatic clutch blade device further includes a PLC control system; a PLC controller (not shown in the figure) is arranged in the PLC control system; the PLC controller is arranged on the box body and is connected to the air filter, the air pressure reducing valve and the solenoid valve 2.
[0035] The operation process of the pneumatic clutch doctor blade device is as follows:
[0036] Refer to Figure 1 - Figure 2 , when it is necessary to scrape off the slurry attached to the surface W of the floating circular screen cage, the PLC controller controls the pneumatic combination unit to operate, that is, controls the air filter and the air pressure reducing valve to operate, for providing a stable-pressure and clean air source; the PLC controller controls the solenoid valve 2 to operate, that is, the air source enters the chamber at the end of the cylinder 3 away from the piston rod 3.1 smoothly through the port P, port A, the pressurizing pipeline 11 and the first speed regulating valve 10 of the solenoid valve 2, and smoothly pushes the piston rod 3.1 to extend to drive the doctor blade 4 to approach and fit onto the surface of the floating circular screen cage; the doctor blade 4 is limited by the limit adjusting component 5 to realize that the doctor blade 4 just fits onto the surface of the floating circular screen cage, avoiding scratching the floating circular screen cage by the doctor blade 4; during the process of pushing the piston rod 3.1 to extend, the gas in the chamber at the end of the cylinder 3 where the piston rod 3.1 is located is compressed and flows out through the port B and port S of the solenoid valve 2 at the same time;
[0037] When scraping off the slurry on the surface W of the floating circular screen cage, the PLC controller continuously controls the pneumatic combination unit to operate, that is, controls the air filter and the air pressure reducing valve to operate, for providing a stable-pressure and clean air source; the PLC controller controls the solenoid valve 2 to operate, that is, the air source enters the chamber at the end of the cylinder 3 where the piston rod 3.1 is located smoothly through the port P, port B, the pressure relief pipeline 13 and the second speed regulating valve 12 of the solenoid valve 2, and smoothly pushes the piston rod 3.1 to move into the cylinder 3 to drive the doctor blade 4 to move away from the surface of the floating circular screen cage, realizing the separation of the doctor blade 4 from the surface of the floating circular screen cage; during the process of the piston rod 3.1 retracting, the gas in the chamber at the end of the cylinder 3 away from the piston rod 3.1 is compressed and flows out through the port A and port R of the solenoid valve 2 at the same time.
[0038] According to the adhesion situation of the slurry on the surface W of the floating circular screen cage, the fitting time and the separation time of the doctor blade 4 and the surface W of the floating circular screen cage can be set through the PLC controller. In this embodiment, the fitting time is set to 2 minutes and the separation time is set to 8 minutes through the PLC controller, so that the contact time between the doctor blade 4 and the surface W of the floating circular screen cage is significantly reduced. While ensuring the scraping effect on the surface W of the floating circular screen cage, the wear on the surface W of the floating circular screen cage and the wear on the doctor blade 4 can be greatly reduced, the service life of the doctor blade 4 and the floating circular screen cage can be improved, the equipment use and maintenance cost can be reduced, and the economic benefit can be improved.
[0039] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, various modifications and variations can be made to the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A pneumatic clutch doctor blade device is used to scrape off the pulp adhering to the surface (W) of the floating cylindrical screen cage. The floating cylindrical screen cage is rotatably arranged in the box body through the installation of bearing seats; it is characterized in that, The pneumatic clutch scraper device includes a gas supply component (1), a solenoid valve (2), a cylinder (3), a transmission assembly, a scraper blade (4), and a limit adjustment component (5); the gas supply component (1) is communicated with the cylinder (3) through the solenoid valve (2); the fixed end of the cylinder (3) is hinged to a mounting seat (6) provided on the box body, and the piston rod (3.1) is connected to the scraper blade (4) through the transmission assembly; the scraper blade (4) is arranged along the axial direction of the floating screen cage, and the transmission assembly is driven by the extension or retraction of the piston rod (3.1) to drive the scraper blade (4) to approach or move away from the screen surface of the floating screen cage; the limit adjustment component (5) is arranged on the box body and is used for limiting the transmission assembly.
2. The pneumatic clutch scraper device according to claim 1, characterized in that, The limit adjustment component (5) includes a limit adjustment rod; a mounting hole for mounting the limit adjustment rod is provided on the box body; an external thread is provided on the limit adjustment rod; an internal thread adapted to the external thread of the limit adjustment rod is provided on the inner wall of the mounting hole.
3. The pneumatic clutch doctor blade device according to claim 2, characterized in that, The limit adjustment component (5) further includes a limit block; the limit block is arranged at one end of the limit adjustment rod away from the mounting hole.
4. The pneumatic clutch doctor blade device according to claim 1, characterized in that, The transmission assembly includes a fixed seat (7), a connecting bearing (8), a rotating shaft, and a connecting rod (9); the fixed seat (7) is arranged on the box body and is located above the piston rod (3.1); the connecting bearing (8) is arranged on the fixed seat (7); one end of the rotating shaft is arranged inside the box body and is connected to the scraper blade (4), and the other end passes through the connecting bearing (8) and is connected to one end of the connecting rod (9); the other end of the connecting rod (9) is connected to the piston rod (3.1).
5. The pneumatic clutch doctor blade device according to any one of claims 1-4, characterized in that, It further includes a first speed control valve (10) and a pressurizing pipeline (11); one end of the pressurizing pipeline (11) is communicated with the solenoid valve (2), and the other end is communicated with the chamber at the end of the cylinder (3) away from the piston rod (3.1); the first speed control valve (10) is arranged on the pressurizing pipeline (11).
6. The pneumatic clutch scraper device according to claim 5, characterized in that, It further includes a second speed control valve (12) and a pressure relief pipeline (13); one end of the pressure relief pipeline (13) is communicated with the solenoid valve (2), and the other end is communicated with the chamber at the end of the cylinder (3) where the piston rod (3.1) is located; the second speed control valve (12) is arranged on the pressure relief pipeline (13).
7. The pneumatic clutch doctor blade device according to claim 6, characterized in that, The solenoid valve (2) includes any one of a five-port two-position solenoid valve and a five-terminal four-way solenoid valve.
8. The pneumatic clutch doctor blade device according to claim 6, characterized in that, The gas supply component (1) includes a pneumatic combination unit.
9. The pneumatic clutch scraping device according to claim 8, wherein The pneumatic combination unit includes a pipe-free air filter and an air pressure reducing valve; a pressure gauge is arranged on the air filter.
10. The pneumatic clutch doctor blade device according to claim 9, characterized in that, It further includes a PLC control system; a PLC controller is arranged in the PLC control system, the PLC controller is arranged on the box body, and is connected to the air filter, the air pressure reducing valve, and the solenoid valve (2).