Anti-blocking screen for cement fineness negative pressure screen analyzer

Abstract

The utility model provides a kind of anti-blocking screen for cement fineness negative pressure sieve analyzer, including screening instrument body, waste collection box, first sieve tray, second sieve tray, driving motor, rotating shaft and connecting disc, waste collection box is provided on the outside surface of screening instrument body, first sieve tray is provided in screening instrument body, second sieve tray is provided below first sieve tray, driving motor is installed in screening instrument body, rotating shaft is provided below driving motor, connecting disc is clamped on the outside surface of rotating shaft, the design solves the problem that the anti-blocking effect of the screen of original cement fineness negative pressure sieve analyzer is poor, the utility model structure is reasonable, by the first screen and second screen of different aperture, cooperate with waste discharge port and arc-shaped guide pricker, large particle cement can be discharged and collected in a cycle, so as to play the function of anti-blocking, simple to use, and strong practicality.

Description

Technical Field

[0001] This utility model is an anti-clogging screen for a cement fineness negative pressure sieve analyzer, belonging to the field of anti-clogging screen technology. Background Technology

[0002] A cement fineness negative pressure sieve analyzer is a device that uses air pressure to sieve powder materials. It generally includes a housing, a screen, a cyclone separator, a dust collector, and a dust collection bottle. The dust collection bottle is fixedly connected to the bottom of the cyclone separator. The cement fineness negative pressure sieve analyzer uses airflow as the power medium for sieving. During operation, fine particles with a diameter smaller than the screen aperture are carried by the airflow through the screen and drawn into the dust collection bottle, while larger particles remain in the screen, thus achieving the purpose of sieving.

[0003] Chinese patent CN210497238U proposes a permanent magnet synchronous motor that facilitates end cap installation. It uses a rotating material-pushing plate on the surface of the screen to agitate large cement particles, preventing them from clogging the mesh. However, this design only agitates large cement particles and cannot discharge and collect them in real time. When there are many large cement particles in the same batch of raw materials, continuous agitation alone cannot alleviate the clogging; the machine must be stopped and the particles cleaned before it can continue. This design has low practicality. There is an urgent need for an anti-clogging screen for cement fineness negative pressure sieve analyzers to solve these problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide an anti-clogging screen for a cement fineness negative pressure sieve analyzer, thereby solving the problems mentioned in the background section. This invention has a reasonable structure, and through the use of a first screen and a second screen with different apertures, along with a waste discharge outlet and an arc-shaped guide block, it can discharge and collect large cement particles in one cycle, thus achieving the function of preventing clogging. It is simple and convenient to use and highly practical.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: an anti-clogging screen for a cement fineness negative pressure sieve analyzer, comprising a screening instrument body, a waste collection box, a waste guide frame, a raw material inlet, a first sieve disc, a second sieve disc, a drive motor, a rotating shaft, and a connecting disc. The waste collection box is provided on the outer side of the screening instrument body, the waste guide frame is installed on the inner side of the screening instrument body, the raw material inlet is provided on the upper end face of the screening instrument body, the first sieve disc is provided inside the screening instrument body, the second sieve disc is provided below the first sieve disc, the drive motor is installed inside the screening instrument body, the rotating shaft is provided below the drive motor, and the connecting disc is clamped on the outer side of the rotating shaft.

[0006] Furthermore, the connecting discs are provided in two sets, with the two sets of connecting discs respectively positioned above the first sieve disc and the second sieve disc. The mesh size of the first sieve disc is larger than that of the second sieve disc.

[0007] Furthermore, three sets of guide blocks are equally spaced on the annular side of the connecting disc. The guide blocks are arc-shaped, and the lower ends of the guide blocks are in close contact with the upper surface of the screens of the first and second screens.

[0008] Furthermore, the input end of the drive motor is electrically connected to an external control panel via a wire, and the output end of the drive motor is fixedly connected to a rotating shaft via a motor shaft.

[0009] Furthermore, a rotating connector is provided at the center of both the first and second screens, and the first and second screens are rotatably connected to the rotating shaft through the rotating connector.

[0010] Furthermore, a waste discharge port is provided on the outer side of the first screen plate, the waste discharge port is engaged with the waste guide frame, and the outlet of the waste guide frame is located directly above the waste collection box.

[0011] Furthermore, a duckbill discharge port is provided below the raw material inlet, and a guide ramp is provided inside the raw material inlet, which is inclined toward the duckbill discharge port. The duckbill discharge port is located to the left of the waste discharge port.

[0012] The beneficial effects of this utility model are as follows: This utility model provides an anti-clogging screen for a cement fineness negative pressure sieve analyzer. Because this utility model adds a drive motor, a rotating shaft, a guide block, a first screen plate, a second screen plate, and a waste discharge port, the drive motor drives the rotating shaft to rotate. The rotating shaft drives the connecting plate and the guide block to rotate together. When the guide block rotates clockwise, it can flatten the raw material on the upper surface of the first screen plate to facilitate sieving. At the same time, large particles that cannot pass through the screen holes will move centrifugally under the guidance of the arc-shaped guide block and enter the waste discharge port. Finally, they will enter the waste collection box through the waste guide frame and be collected. By using the first and second screens with different apertures in combination, the sieving efficiency is improved while large particles are discharged in a timely manner to avoid clogging. Attached Figure Description

[0013] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the structure of an anti-clogging screen for a cement fineness negative pressure sieve analyzer according to the present invention; Figure 2This is a partial structural schematic diagram of an anti-clogging screen for a cement fineness negative pressure sieve analyzer according to the present invention. Figure 3 This is a partial disassembly diagram of an anti-clogging screen for a cement fineness negative pressure sieve analyzer according to the present invention. Figure 4 This is a partial disassembly diagram of an anti-clogging screen for a cement fineness negative pressure sieve analyzer according to the present invention. In the diagram: 1-screening instrument body, 2-waste collection box, 3-waste guide frame, 4-raw material input port, 41-guide ramp, 42-duckbill discharge port, 5-first screen plate, 51-rotating connector, 52-waste discharge port, 6-second screen plate, 7-drive motor, 8-rotating shaft, 9-connecting plate, 91-guide block. Detailed Implementation

[0014] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0015] Please see Figures 1-4 This utility model provides a technical solution: an anti-clogging screen for a cement fineness negative pressure sieve analyzer, comprising a sieve body 1, a waste collection box 2, a waste guide frame 3, a raw material inlet 4, a first sieve disc 5, a second sieve disc 6, a drive motor 7, a rotating shaft 8, and a connecting plate 9. The waste collection box 2 is provided on the outer side of the sieve body 1, the waste guide frame 3 is installed on the inner side of the sieve body 1, the raw material inlet 4 is provided on the upper end face of the sieve body 1, the first sieve disc 5 is provided inside the sieve body 1, the second sieve disc 6 is provided below the first sieve disc 5, the drive motor 7 is installed inside the sieve body 1, the rotating shaft 8 is provided below the drive motor 7, and the connecting plate 9 is clamped on the outer side of the rotating shaft 8. This design solves the problem of poor anti-clogging effect of the original cement fineness negative pressure sieve analyzer.

[0016] As the first embodiment of this utility model: Two sets of connecting discs 9 are provided, with the two sets of connecting discs 9 respectively positioned above the first screen disc 5 and the second screen disc 6. The mesh size of the first screen disc 5 is larger than that of the second screen disc 6. The larger mesh size of the first screen disc combined with the smaller mesh size of the second screen disc allows for better screening and has a strong anti-clogging function. Three sets of guide blocks 91 are equally spaced on the annular side of the connecting disc 9. The guide blocks 91 are arc-shaped, with their lower ends closely attached to the upper surface of the screens of the first screen disc 5 and the second screen disc 6. During clockwise rotation, the arc-shaped guide blocks 91 can spread the raw material evenly on the upper surface of the screen and guide large cement particles towards the centrifugal direction. The input end of the drive motor 7 is electrically connected to the external control panel via a wire, and the output end of the drive motor 7 is fixedly connected to the rotating shaft 8 via a motor shaft. The drive motor 7 can drive the rotating shaft 8. Rotating clockwise, both the first screen plate 5 and the second screen plate 6 have a rotating connector 51 at their center. The first screen plate 5 and the second screen plate 6 are rotatably connected to the rotating shaft 8 through the rotating connector 51. This design allows the rotating shaft 8 to rotate independently relative to the first screen plate 5 and the second screen plate 6, while fixing the position between the rotating shaft 8 and the first screen plate 5 and the second screen plate 6. The outer side of the first screen plate 5 has a waste discharge outlet 52, which engages with the waste guide frame 3. The outlet of the waste guide frame 3 is located directly above the waste collection box 2. Below the raw material inlet 4, there is a duckbill outlet 42. Inside the raw material inlet 4, there is a guide ramp 41 that slopes towards the duckbill outlet 42. The duckbill outlet 42 is located to the left of the waste discharge outlet 52, and the duckbill outlet 42 can guide the input raw material to fall to the left of the waste discharge outlet 52.

[0017] As a second embodiment of this utility model: the user puts the raw material into the raw material inlet 4. Under the guidance of the guide ramp 41, the raw material falls onto the upper surface of the screen of the first screen plate 5 through the duckbill discharge port 42. Then, the drive motor 7 is turned on and drives the rotating shaft 8 to rotate. The rotating shaft 8 drives the connecting plate 9 and the guide block 91 to rotate together. When the guide block 91 rotates in a clockwise direction, the raw material on the upper surface of the first screen plate 5 can be flattened to facilitate screening. At the same time, large particles of raw material that cannot pass through the screen holes will move in the centrifugal direction under the guidance of the arc-shaped guide block 91 and enter the waste discharge port 52. Finally, they enter the waste collection box 2 through the waste guide frame 3 and are collected. By using the first screen and the second screen with different apertures in combination, the screening efficiency is improved while large particles of raw material are discharged in time to avoid blockage.

[0018] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0019] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An anti-clogging screen for a cement fineness negative pressure sieve analyzer, comprising a sieve body, a waste collection box, a waste guide frame, a raw material input port, a first sieve disc, a second sieve disc, a drive motor, a rotating shaft, and a connecting disc, characterized in that: The outer side of the screening instrument body is provided with a waste collection box, the inner side of the screening instrument body is installed with a waste guide frame, the upper end face of the screening instrument body is provided with a raw material input port, the inside of the screening instrument body is provided with a first screening plate, the lower part of the first screening plate is provided with a second screening plate, the inside of the screening instrument body is installed with a drive motor, the lower part of the drive motor is provided with a rotating shaft, and the outer side of the rotating shaft is fitted with a connecting plate.

2. The anti-clogging screen for a cement fineness negative pressure sieve analyzer according to claim 1, characterized in that: The connecting discs are provided in two sets, and the two sets of connecting discs are respectively located above the first screen disc and the second screen disc. The screen aperture of the first screen disc is larger than that of the second screen disc.

3. The anti-clogging screen for a cement fineness negative pressure sieve analyzer according to claim 1, characterized in that: The connecting disc has three sets of guide blocks evenly spaced on its annular side. The guide blocks are arc-shaped, and their lower ends are in close contact with the upper surface of the screens of the first and second screens.

4. The anti-clogging screen for a cement fineness negative pressure sieve analyzer according to claim 1, characterized in that: The input end of the drive motor is electrically connected to the external control panel via a wire, and the output end of the drive motor is fixedly connected to the rotating shaft via the motor shaft.

5. The anti-clogging screen for a cement fineness negative pressure sieve analyzer according to claim 1, characterized in that: Both the first and second sieve discs are provided with a rotating connector at their center positions, and the first and second sieve discs are rotatably connected to the rotating shaft through the rotating connector.

6. The anti-clogging screen for a cement fineness negative pressure sieve analyzer according to claim 1, characterized in that: The first screen plate has a waste discharge port on its outer side, which engages with the waste guide frame. The outlet of the waste guide frame is located directly above the waste collection box.

7. The anti-clogging screen for a cement fineness negative pressure sieve analyzer according to claim 6, characterized in that: A duckbill discharge port is provided below the raw material inlet. A guide ramp is provided inside the raw material inlet and the guide ramp is inclined toward the duckbill discharge port. The duckbill discharge port is located to the left of the waste discharge port.

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