Self-cleaning wet screening instrument
By introducing ultrasonic devices and detachable drive devices into the wet screen instrument, the problem of screen clogging is solved, the self-cleaning function of screen is realized, the accuracy and efficiency of experiments are improved, and the operation is simplified.
Patent Information
- Application Number
- CN202421771456.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-25
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-07-25
AI Technical Summary
Traditional wet screening instruments are difficult to effectively clean when the screen is blocked, resulting in the inability to perform experiments, and the additional cleaning device increases operational complexity and cost.
A self-cleaning wet screening device is designed, using ultrasonic devices and detachable drive devices, combined with elastic support and nested screen structure to realize the self-cleaning function of the screen.
It realizes efficient self-cleaning of the screen, avoids the overflow of rinsing liquid during the experiment, improves the accuracy and efficiency of the experiment, simplifies the operation process, and reduces costs.
Smart Images
Figure CN223083243U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a wet screening instrument, in particular to a self-cleaning wet screening instrument. Background Art
[0002] Particle size distribution is an important index reflecting the fineness and classification of particulate matter. For the detection of particle size distribution of fine materials, the most commonly used and relatively accurate experimental instrument is a wet screening instrument, that is, wet particle size distribution detection of particulate matter, which is applicable to various organic and inorganic particles and is widely used in fields such as soil, sand and gravel, mining, medicine, food, and agriculture.
[0003] Traditional wet screening instruments complete wet screening by introducing flushing water to disperse and flush the particulate matter on the screen. When materials adhere to the surface of the screen or an oil film is formed by oily pollutants on the screen surface, etc., the flushing water and small particle size materials cannot effectively penetrate the screen, resulting in screen hole blockage, and the flushing liquid overflows from adjacent screens or overflows from the top, ultimately leading to the inability to conduct experiments. The conventional means to solve this problem is to flush the screen with high-pressure water or compressed air, but when the pressure is insufficient, the effective cleaning effect cannot be achieved, and when the pressure is relatively high, the screen will be deformed and damaged. Therefore, laboratories mostly use an additional ultrasonic cleaning machine to clean the screen, resulting in more complex experimental operations and greatly increased costs. Summary of the Invention
[0004] Object of the Invention: The object of the utility model is to provide a self-cleaning wet screening instrument with flexible use and easy operation.
[0005] Technical Solution: The self-cleaning wet screening instrument of the utility model is provided with a water inlet pipe and a flushing cylinder. The flushing cylinder is composed of a cylindrical upper cylinder body and an inverted frustum-shaped lower cylinder body. The lower cylinder body is provided with an underflow port and is connected to an underflow channel. A screen assembly is arranged inside the flushing cylinder, and the screen assembly is connected to a driving device through a fixing device.
[0006] Wherein, an ultrasonic device is connected to the outer side of the lower cylinder body; the ultrasonic device is used to further disperse the sample on the screen, thereby forming a more uniform and stable suspension, avoiding particulate matter getting stuck in the screen gaps or forming an oil film on the screen surface; after the experiment, ultrasonic cleaning of the screen can also be carried out.
[0007] Wherein, the driving device is composed of a driver, a transmission rod, and a transmission part connected in sequence. The transmission part is provided with a through hole; the fixing device includes a fixing rod, a fixing piece, and a joint. The fixing rod passes through the through hole and is connected to the transmission part through the fixing piece. The end of the fixing rod is provided with a joint, and the joint is connected to the screen assembly. The joint is a clamping structure or a snap structure; the driving device and the fixing device jointly act to transmit the vibration generated by the driver to the screen assembly; each component of the driving device and the fixing device is detachably connected.
[0008] Among them, on the said support, according to the requirements of the experiment, sieve meshes with different aperture meshes can be stacked vertically to form a sieve mesh assembly, and the sieve meshes are connected in a form of mutual nesting.
[0009] Among them, the ratio of the height H of the upper cylinder to the height h of the sieve mesh assembly is H / h≥1.
[0010] Among them, the ratio of the inner diameter D of the upper cylinder to the inner diameter d of the sieve mesh assembly is d / D = 0.7 - 1.
[0011] Among them, the slope α of the inclined plane of the inverted frustum-shaped lower cylinder is 30° - 90°.
[0012] Among them, a control valve is provided in the underflow channel to control the discharge or collection of the flushing liquid in the flushing cylinder.
[0013] Among them, the driver is a driving handle or an electric vibrator.
[0014] Among them, a support for fixing the sieve mesh assembly is provided in the flushing cylinder, and the support is an elastic member, so that an incomplete contact surface is formed between the support and the sieve mesh assembly. The vibration force transmitted by the driver forms a rebound through the incomplete contact surface between the support and the sieve mesh assembly, making the screening effect better.
[0015] Beneficial effects: Compared with the prior art, the utility model has the following advantages: (1) Compared with the traditional wet screening instrument, the driving device is arranged outside the device, and the flushing cylinder can effectively seal the flushing liquid, and the flushing liquid is not easy to overflow, ensuring the accuracy of the experiment, while improving the experimental efficiency and safety; (2) The structure is simple, easy to operate, has a safe and effective self-cleaning function, does not require an additional cleaning device, is flexible to use, and has strong practicability; effectively improves the experimental accuracy and experimental efficiency. Description of the Drawings
[0016] Figure 1 is the structural schematic diagram of the utility model;
[0017] Figure 2 is the structural schematic diagram of the driving device and the fixing device of the sieve mesh assembly;
[0018] Figure 3 is the schematic diagram of the proportional relationship between the cylinder and the sieve mesh assembly, a is the height relationship, and b is the inner diameter relationship;
[0019] Figure 4 is the schematic diagram of the nested and stacked structure of the sieve mesh assembly;
[0020] Among them, 1 is the water inlet pipe, 2 is the flushing cylinder, 201 is the upper cylinder body, 202 is the lower cylinder body, 203 is the underflow port, 204 is the underflow channel, 205 is the control valve, 206 is the support, 3 is the screen assembly, 31 is the first screen, 32 is the second screen, 4 is the ultrasonic device, 5 is the driving device, 6 is the fixing device, 501 is the driver, 502 is the transmission rod, 503 is the transmission part, 601 is the fixing rod, 602 is the fixing piece, and 603 is the joint. Detailed implementation manners
[0021] The technical solution of the present utility model will be further described below in conjunction with the accompanying drawings.
[0022] In the self-cleaning wet screening instrument of the present utility model, the screen assembly 3 is arranged in the flushing cylinder 2, and the driving device 5 is arranged outside the flushing cylinder 2 to avoid the overflow of the flushing liquid during the experiment. In addition, an ultrasonic device 4 is provided in the flushing cylinder 2. After the experiment is completed, by closing the control valve and injecting water into the cylinder, the screen assembly 3 is immersed in water in the flushing cylinder 2 to complete ultrasonic self-cleaning, and continuous flushing can be realized through the control valve 205 at the bottom of the screening instrument.
[0023] As Figure 1 shown, the self-cleaning wet screening instrument of the present utility model is provided with a water inlet pipe 1 and a flushing cylinder 2. The flushing cylinder 2 is composed of a cylindrical upper cylinder body 201 and an inverted frustum-shaped lower cylinder body 202. The lower cylinder body 202 is provided with an underflow port 203 and is connected to an underflow channel 204. A screen assembly 3 is arranged inside the flushing cylinder 2. The screen assembly 3 is connected to the driving device 5 through a fixing device 6. A support 206 for fixing the screen assembly 3 is arranged in the flushing cylinder 2, and the support 206 is an elastic member. An ultrasonic device 4 is connected to the outside of the lower cylinder body 202. A control valve 205 is arranged in the underflow channel 204. The driver 501 is a driving handle.
[0024] As Figure 2 shown, it is a structural schematic diagram of the driving device and the fixing device of the screen assembly. The driving device 5 is composed of a driver 501, a transmission rod 502 and a transmission part 503 connected in sequence. Two through holes are arranged on the transmission part 503. The fixing device 6 includes a fixing rod 601, a fixing piece 602 and a joint 603. The two fixing rods 601 respectively pass through the two through holes and are connected to the transmission part 503 through the fixing piece 602. The end of the fixing rod 601 is provided with a joint 603, and the joint 603 of the clamping structure is connected to the screen assembly 3.
[0025] As Figure 3 shown, the ratio of the height H of the upper cylinder body 201 to the height h of the screen assembly 3 is 1.2, the ratio of the inner diameter D of the upper cylinder body 201 to the inner diameter d of the screen assembly 3 is d / D = 0.8, and the slope α of the inclined surface of the inverted frustum-shaped lower cylinder body 202 is 60°.
[0026] As Figure 4 shown, the screen assembly 3 stacks and places screens with different aperture meshes in the vertical direction. The screens are connected in a form of mutual nesting. The first screen 31 is stacked above the second screen 32 and is stably connected in a nested form through the protrusions on the screen edges.
[0027] When using the screening instrument of the present utility model to conduct a screening experiment, it includes the following steps:
[0028] (1) Select the required test screens. In the order from the largest mesh number (i.e., from the smallest screen aperture to the largest), stack them in a nested manner from the bottom in sequence to form the screen assembly 3, place it on the support seat 206 in the flushing cylinder 2, and open the underflow control valve 205;
[0029] (2) Place the fixing device 6 on the screen assembly 3; the joint 603 at one end of the fixing rod 601 is used to clamp the screen, and the other end of the fixing rod 601 passes through the transmission part 503 and fixes and locks the screen in the flushing cylinder 2 through the fixing member 602; connect the driver 501 and the transmission rod 502 to the transmission part 503;
[0030] (3) Open the driver 501, drive the screen to vibrate through the transmission rod 502 and the transmission part 503; add the sample to be detected and flushing water onto the screen until the experiment is completed; the underflow liquid at the outlet of the underflow channel 204 can be collected with a container or directly discharged according to the experimental needs.
[0031] When using the screening instrument of the present utility model to conduct a screening experiment on a sample with high viscosity or containing oily pollutants, the following operations can be continued based on the above step (3):
[0032] (4) Close the control valve 205 on the underflow channel 204; continue to inject flushing liquid into the flushing cylinder 2 until the sample on the screen assembly 3 is immersed in the flushing liquid;
[0033] (5) Turn on the ultrasonic device 4. The vibration energy conducted by it to the liquid in the flushing cylinder 2 can help disperse the sample on the screen, form a more uniform and stable suspension, and make the particulate matter stuck in the screen pores fall off or break the oil film formed on the screen surface, so that the particulate matter can pass through the screen assembly 3 more effectively to complete the screening experiment.
[0034] After the above screening experiment, the screening instrument of the present utility model can be self-cleaned by operation: the screen assembly 3 is re-placed and fixed in the flushing cylinder 2, the control valve 205 on the underflow channel 204 is closed, and the flushing liquid is continuously injected into the flushing cylinder 2 until the screen assembly 3 is completely immersed therein; the ultrasonic device 4 is turned on, and the screen assembly 3 is ultrasonically cleaned. Therefore, the screening instrument of the present utility model has a safe and effective self-cleaning function, does not require an additional cleaning device, is flexible in use, and has strong practicability.
Claims
1. A self-cleaning wet screening instrument, characterized in that, The sieve is provided with a water inlet pipe (1) and a flushing cylinder (2). The flushing cylinder (2) consists of a cylindrical upper cylinder body (201) and an inverted frustum-shaped lower cylinder body (202). The lower cylinder body (202) is provided with an underflow port (203) and is connected to an underflow channel (204). A screen assembly (3) is arranged inside the flushing cylinder (2), and the screen assembly (3) is connected to a driving device (5) through a fixing device (6).
2. The self-cleaning wet screening instrument according to claim 1, wherein An ultrasonic device (4) is connected to the outside of the lower cylinder body (202).
3. The self-cleaning wet screening instrument according to claim 1, characterized in that, The driving device (5) is composed of a driver (501), a transmission rod (502) and a transmission part (503) connected in sequence. A through hole is arranged on the transmission part (503). The fixing device (6) includes a fixing rod (601), a fixing piece (602) and a joint (603). The fixing rod (601) passes through the through hole and is connected to the transmission part (503) through the fixing piece (602). The end of the fixing rod (601) is provided with a joint (603), and the joint (603) is connected to the screen assembly (3).
4. The self-cleaning wet screening instrument according to claim 1, wherein The screen assembly (3) is composed of screens with different aperture meshes nested and superimposed in the vertical direction.
5. The self-cleaning wet screening instrument according to claim 1, wherein, The ratio of the height H of the upper cylinder body (201) to the height h of the screen assembly (3) is H / h≥1.
6. The self-cleaning wet screening instrument according to claim 1, characterized in that, The ratio of the inner diameter D of the upper cylinder body (201) to the inner diameter d of the screen assembly (3) is d / D = 0.7 - 1.
7. The self-cleaning wet screening instrument according to claim 1, wherein The slope α of the inclined surface of the inverted frustum-shaped lower cylinder body (202) is 30° - 90°.
8. The self-cleaning wet screening instrument according to claim 1, characterized in that, The underflow channel (204) is provided with a control valve (205).
9. The self-cleaning wet screening instrument according to claim 3, characterized in that, The driver (501) is a driving handle or an electric vibrator.
10. The self-cleaning wet screening instrument according to claim 1, characterized in that, A support (206) for fixing the screen assembly (3) is arranged inside the flushing cylinder (2), and the support (206) is an elastic member.