Anti-blocking superfine screening screen

Abstract

The application belongs to the technical field of ceramic tile raw material production, and particularly relates to an anti-blocking ultrafine screening screen, which comprises an upper limit particle screening mechanism and a lower limit particle screening mechanism. The upper limit particle screening mechanism and the lower limit particle screening mechanism are both composed of a particle screening mechanism and a particle collecting mechanism. A driving mechanism, a fixed support, a support plate and a vibration motor are installed on an upper support frame in the particle screening mechanism. The driving mechanism is drivingly connected with an inner cylinder body which is rotatably installed in an outer housing and has one end inserted into the particle collecting mechanism. The particle collecting mechanism is connected with a positive pressure compensation pipe and has a feeding pipe inserted therein. A baffle is installed at the end of the feeding pipe. A discharging groove is arranged at the lower side of the outer housing. The discharging groove in the upper limit particle screening mechanism is connected with the feeding pipe in the lower limit particle screening mechanism. The particle screening mechanism can screen dry particles exceeding the upper and lower limits of particle size. The positive pressure and vibration mode is not easy to cause material crushing, and the feeding pipe and the baffle can effectively prevent ultrafine dry particles from drifting to the external environment.

Description

Technical Field

[0001] This invention belongs to the field of ceramic tile raw material production technology, specifically relating to an anti-clogging ultrafine screening screen. Background Technology

[0002] As living standards improve, people have increasingly higher requirements for the surface decoration effect of tiles. Compared with natural stone, ordinary tiles lack three-dimensionality and color gradation. In this regard, glaze companies have launched dry granule products, which use a layer of very fine dry granules on the surface of the tile to simulate the granular texture of natural stone after firing, and the colors are more realistic due to the differences in surface gradation.

[0003] Currently, the dry granule particle size used on ceramic tile surfaces is mainly concentrated between 40-125 micrometers (D50 size), which already provides a good decorative effect. However, with the promotion of this technology, some problems have also emerged. On the one hand, because the dry granules are relatively coarse, the fineness is insufficient. Furthermore, if the dry granules are heated to a high temperature, dirt can easily get trapped between the particles, making them difficult to wipe clean. On the other hand, if the particles are made too fine, the dry granules will become too cold and easily melt together, losing their granular texture. Therefore, it is necessary to control the upper and lower limits of the dry granule particle size. Traditional centrifugal screening easily leads to the breakage of dry granules due to impact with the equipment surface, resulting in a reduced yield of qualified material. Moreover, because ultrafine dry granules have low dryness and small particle size, they are easily dispersed in the air, causing material loss and air pollution. Summary of the Invention

[0004] To address the above problems, the purpose of this invention is to provide an anti-clogging ultrafine screening screen, which solves the problem that traditional centrifugal screening is prone to dry particle breakage due to impact with the equipment surface, resulting in a decrease in the yield of qualified materials. Furthermore, because ultrafine dry particles have low dryness and small particle size, they are also prone to scattering in the air, causing material loss and air pollution.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an anti-clogging ultrafine screening screen, comprising an upper limit particle removal mechanism and a lower limit particle removal mechanism, both of which are composed of a particle screening mechanism and a particle collection mechanism. The particle screening mechanism includes a lower support frame, on which a spring support member is provided. The spring support member supports an upper support frame. A drive mechanism, a fixed bracket, a support plate, and a vibration motor are mounted on the upper support frame. The drive mechanism drives and connects to an inner cylinder. A screening screen cylinder and a pusher plate are provided on the inner side of the inner cylinder. The inner cylinder is rotatably mounted on an outer... In the shell, one end of the inner cylinder is inserted into the particle collection mechanism. The particle collection mechanism is connected to a positive pressure replenishing pipe and has a feed pipe inserted into it. The positive pressure replenishing pipe is connected to a positive pressure gas pipeline. One end of the feed pipe is arranged along the axis of the sieve cylinder and a baffle is installed at the end. A flexible connecting pipe is connected between the outer shell and the particle collection mechanism. A back-blowing air knife and a feeding trough are respectively arranged on the upper and lower sides of the outer shell. The bottom end of the feeding trough in the upper limit particle removal mechanism is connected to the top end of the feed pipe in the lower limit particle removal mechanism. The top end of the feed pipe in the upper limit particle removal mechanism is connected to a Venturi gas-solid jet feeder.

[0006] The beneficial effects of the present invention are as follows: the particle screening mechanism in the upper limit particle screening mechanism and the lower limit particle screening mechanism can sequentially screen out dry particles that exceed the upper and lower limits of particle size. The positive pressure combined with vibration screening method is less likely to cause material breakage. In addition, the use of feed pipe and baffle effectively prevents ultrafine dry particles of material from drifting into the external environment.

[0007] To effectively prevent ultrafine dry particles that float up during the screening process from directly entering the particle collection mechanism, thus affecting the screening effect and causing material loss;

[0008] As a further improvement to the above technical solution: the internal pressure of the particle collection mechanism is greater than the internal pressure of the outer shell, and the bottom end of the feed pipe is located at the end of the sieve cylinder away from the particle collection mechanism.

[0009] The beneficial effects of this improvement are as follows: positive pressure gas enters the interior of the particle collection mechanism through the positive pressure replenishment pipe, so that the interior of the particle collection mechanism forms a positive pressure higher than that of the outer shell, thereby preventing the floating ultrafine dry particles ejected from the feed pipe from entering the particle collection mechanism with the airflow and affecting the screening effect.

[0010] To effectively prevent ultrafine dry particles ejected from the feed pipe from directly entering the particle collection mechanism during back splashing, thus affecting the screening effect and causing material loss;

[0011] As a further improvement to the above technical solution: the baffle is a conical disk structure, and the bottom surface of the baffle is set towards the particle collection mechanism, and the bottom surface of the baffle and the pusher plate are in clearance fit.

[0012] The beneficial effects of this improvement are: when the ultrafine dry particles ejected from the feed pipe are blocked by the inner wall of the inner cylinder and splash back, the baffle acts as a shield, preventing the dry particles from directly entering the particle collection mechanism and affecting the screening effect.

[0013] To ensure the stability of the powder screening cylinder in use;

[0014] As a further improvement to the above technical solution: the surface of the inner cylinder is provided with a hollow groove structure, and the outer surface of the powder screening cylinder is attached to the inner wall of the inner cylinder.

[0015] The beneficial effects of this improvement are: the inner cylinder provides rigid support for the sieve cylinder, ensuring the stable use of the sieve cylinder, and the hollowed-out grooves on the surface also allow the sieve cylinder to perform normal sieving work.

[0016] To prevent the sieve cylinder from clogging during long-term sieving processes and thus affecting the sieving effect of the device;

[0017] As a further improvement to the above technical solution: the back-blowing air knife is located directly above the hollowed-out groove of the inner cylinder, and the back-blowing air knife is connected to a positive pressure pipeline.

[0018] The beneficial effects of this improvement are: the high-pressure gas ejected by the back-blowing air knife can back-blowing and sweep away the dry particles that are blocked in the screen holes of the sieve cylinder, thus avoiding the long-term blockage of dry particles from affecting the screening process.

[0019] To ensure the outer casing can rotate stably;

[0020] As a further improvement to the above technical solution: a rolling support is installed on the support plate. The rolling support is a roller mechanism, and there are multiple rolling supports arranged around the axis of the inner cylinder. The rolling support is tactilely connected to the inner cylinder.

[0021] The beneficial effects of this improvement are: the rolling support provides rolling support for the inner cylinder, enabling the inner cylinder to rotate stably and smoothly under the drive of the drive mechanism, thus carrying out efficient screening work.

[0022] To avoid interference between the particle screening mechanism and the particle collection mechanism during vibration, which would affect the vibration screening effect;

[0023] As a further improvement to the above technical solution: a flexible connecting pipe is connected between the bottom end of the feeding trough in the upper limit particle screening mechanism and the top end of the feeding pipe in the lower limit particle screening mechanism, and the flexible connecting pipe is fitted on the outside of the inner cylinder and the screening screen cylinder.

[0024] The beneficial effects of this improvement are: Flexible connecting pipe 1 and flexible connecting pipe 2 can effectively avoid interference between the particle screening mechanism and the particle collection mechanism during vibration, thus affecting the effect of vibrating screening, while ensuring smooth material transfer and device sealing.

[0025] To effectively ensure the device's airtightness;

[0026] As a further improvement to the above technical solution: a dynamic sealing element is provided at the connection between the inner cylinder and the outer shell.

[0027] The beneficial effects of this improvement are: the dynamic sealing element can keep the connection between the inner cylinder and the outer shell sealed when the inner cylinder rotates, thus preventing the leakage of ultrafine dry particles due to the positive pressure environment inside the outer shell.

[0028] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of the present invention;

[0030] Figure 2 This is a cross-sectional view of the upper limit particle sieving mechanism in this invention;

[0031] Figure 3 This is a schematic diagram of the upper limit particle sieving mechanism in this invention;

[0032] Figure 4 This is a top view of the present invention;

[0033] Figure 5 This is a cross-sectional view of the outer shell and inner cylinder of the present invention;

[0034] In the diagram: 100, Upper limit particle removal mechanism; 101, Particle screening mechanism; 102, Particle collection mechanism; 200, Lower limit particle removal mechanism; 1, Lower support frame; 2, Spring support component; 3, Upper support frame; 4, Drive mechanism; 5, Fixed bracket; 6, Support plate; 7, Rolling support component; 8, Outer shell; 9, Inner cylinder; 10, Screening screen cylinder; 11, Pushing plate; 12, Back-blowing air knife; 13, Discharge chute; 14, Flexible connecting pipe one; 15, Feed pipe; 16, Baffle; 17, Positive pressure compensation pipe; 18, Vibration motor; 19, Flexible connecting pipe two. Detailed Implementation

[0035] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way.

[0036] Example 1:

[0037] like Figure 1As shown in Figure 5: A clog-resistant ultrafine screening screen includes an upper limit particle removal mechanism 100 and a lower limit particle removal mechanism 200. Both the upper limit particle removal mechanism 100 and the lower limit particle removal mechanism 200 are composed of a particle screening mechanism 101 and a particle collection mechanism 102. The particle screening mechanism 101 includes a lower support frame 1, on which a spring support member 2 is provided. The spring support member 2 supports an upper support frame 3. A drive mechanism 4, a fixed bracket 5, a support plate 6, and a vibration motor 18 are installed on the upper support frame 3. The drive mechanism 4 drives and connects to an inner cylinder 9. A screening screen cylinder 10 and a pusher plate 11 are provided inside the inner cylinder 9. The inner cylinder 9 is rotatably installed in an outer shell 8, and one end of the inner cylinder 9 is inserted into... In the particle collection mechanism 102, a positive pressure replenishing pipe 17 is connected and a feed pipe 15 is inserted. The positive pressure replenishing pipe 17 is connected to a positive pressure gas pipeline. One end of the feed pipe 15 is arranged along the axis of the sieve cylinder 10 and a baffle 16 is installed at the end. A flexible connecting pipe 19 connects the outer shell 8 and the particle collection mechanism 102. A back-blowing air knife 12 and a feeding trough 13 are respectively arranged on the upper and lower sides of the outer shell 8. The bottom end of the feeding trough 13 in the upper limit particle removal mechanism 100 is connected to the top end of the feed pipe 15 in the lower limit particle removal mechanism 200. The top end of the feed pipe 15 in the upper limit particle removal mechanism 100 is connected to a Venturi-type gas-solid jet feeder. The upper limit particle removal mechanism 100 and the lower limit particle removal mechanism 200 are connected to the upper limit particle removal mechanism 100 and the lower limit particle removal mechanism 200. The particle screening mechanism 101 in the particle removal mechanism 200 can sequentially screen out dry particles exceeding the upper and lower limits of particle size. The positive pressure combined with vibration screening method is less likely to cause material breakage, and the use of feed pipe 15 and baffle 16 effectively prevents ultrafine dry particles from drifting into the external environment. The internal pressure of the particle collection mechanism 102 is greater than the internal pressure of the outer shell 8. The bottom end of the feed pipe 15 is located at the end of the sieve cylinder 10 away from the particle collection mechanism 102. Positive pressure gas enters the interior of the particle collection mechanism 102 through the positive pressure supplement pipe 17, so that the interior of the particle collection mechanism 102 forms a positive pressure higher than that of the outer shell 8, thereby preventing the floating ultrafine dry particles ejected from the feed pipe 15 from entering the particle collection mechanism 102 with the airflow and affecting the screening effect. The baffle 16 has a conical disc structure, and its bottom surface faces the particle collection mechanism 102. The bottom surface of the baffle 16 is clearance-fitted with the pusher plate 11. When the ultrafine dry particles ejected from the feed pipe 15 are blocked by the inner wall of the inner cylinder 9 and splash back, the baffle 16 acts as a shield to prevent the dry particles from directly entering the particle collection mechanism 102 and affecting the screening effect. The surface of the inner cylinder 9 has a hollow groove structure. The outer surface of the sieving screen cylinder 10 is attached to the inner wall of the inner cylinder 9. The inner cylinder 9 provides rigid support for the sieving screen cylinder 10, ensuring its stable use. The hollow groove on the surface also allows the sieving screen cylinder 10 to perform normal screening work. The back-blowing air knife 12 is located directly above the hollow groove of the inner cylinder 9.The back-blowing air knife 12 is connected to a positive pressure pipeline. The high-pressure gas sprayed by the back-blowing air knife 12 can back-blow and clean the dry particles blocked in the screen holes of the sieve cylinder 10, preventing the dry particles from blocking for a long time and affecting the screening operation. Rolling support members 7 are installed on the support plate 6. The rolling support members 7 are roller mechanisms, and there are multiple rolling support members 7 arranged around the axis of the inner cylinder 9. The rolling support members 7 are tumblingly connected to the inner cylinder 9 and provide rolling support for the inner cylinder 9, so that the inner cylinder 9 can rotate stably and smoothly under the drive of the drive mechanism 4 to perform efficient screening. The bottom end of the feed trough 13 in the upper limit particle removal mechanism 100 is connected to the lower limit particle removal mechanism 100. A flexible connecting pipe 14 is connected between the top ends of the feed pipe 15 in the particle screening mechanism 200. A second flexible connecting pipe 19 is fitted onto the outside of the inner cylinder 9 and the sieve screen cylinder 10. The first flexible connecting pipe 14 and the second flexible connecting pipe 19 effectively prevent interference between the particle screening mechanism 101 and the particle collection mechanism 102 during vibration, thus avoiding affecting the vibration screening effect, while ensuring smooth material transfer and device sealing. A dynamic seal is provided at the connection between the inner cylinder 9 and the outer shell 8. This dynamic seal ensures that the connection between the inner cylinder 9 and the outer shell 8 remains sealed during rotation, preventing the overflow of ultrafine dry particles due to the positive pressure environment inside the outer shell 8.

[0038] The working principle of this technical solution is as follows: The other end of the feed pipe 15 is equipped with a Venturi-type gas-solid jet feeder for feeding, so that the material mixed with positive pressure airflow is sent into the inner side of the sieve cylinder 10 through the feed pipe 15. The baffle 16 plays the role of blocking the splashed material. At the same time, the external positive pressure gas enters the interior of the particle collection mechanism 102 through the positive pressure replenishment pipe 17, so that the particle collection mechanism 102 maintains a positive pressure difference with the interior of the sieve cylinder 10, preventing the ultrafine particles floating in the sieve cylinder 10 from directly entering the particle collection mechanism 102 and affecting the screening effect. With the operation of the drive mechanism 4, the inner cylinder 9 rotates stably under the drive of the drive mechanism 4 and the support of the rolling support 7. The material in the inner cylinder 9 moves towards the particle collection mechanism 102 under the push of the pusher plate 11. At the same time, the vibration motor 18 is powered on and works. When the vibration motor 18 runs... The material feed trough 13 vibrates, and the spring support 2 provides elastic support for the various device components rigidly mounted on the lower support frame 1. During the vibration, in conjunction with the positive pressure inside the sieve cylinder 10, materials with a particle size smaller than the sieve holes of the sieve cylinder 10 fall into the feed trough 13 and then enter the lower limit particle removal mechanism 200. Materials with a particle size larger than the sieve holes of the sieve cylinder 10 fall into the particle collection mechanism 102 for collection. After the material enters the lower limit particle removal mechanism 200, it is screened again as described above. Materials with a particle size larger than the sieve holes of the sieve cylinder 10 in the lower limit particle removal mechanism 200 are qualified materials and are collected in the particle collection mechanism 102 in the lower limit particle removal mechanism 200. Materials with a particle size smaller than the sieve holes of the sieve cylinder 10 in the lower limit particle removal mechanism 200 are unqualified materials and can be discharged after connecting to a cyclone dust collector to achieve dust reduction and unloading.

[0039] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or changes can be made without departing from the principles of the present invention, and the above technical features can also be combined in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of the present invention.

Claims

1. A clog-resistant ultrafine screening screen, characterized in that: The system includes an upper limit particle screening mechanism (100) and a lower limit particle screening mechanism (200). Both the upper limit particle screening mechanism (100) and the lower limit particle screening mechanism (200) are composed of a particle screening mechanism (101) and a particle collection mechanism (102). The particle screening mechanism (101) includes a lower support frame (1), on which a spring support member (2) is provided. The spring support member (2) supports an upper support frame (3). The upper support frame (3) is equipped with a drive mechanism (4), a fixed bracket (5), a support plate (6), and a vibration motor (18). The drive mechanism (4) drives the inner cylinder (9). The inner cylinder (9) is provided with a sieve screen cylinder (10) and a pusher plate (11) on its inner side. The inner cylinder (9) is rotatably installed in the outer shell (8). One end of the inner cylinder (9) is inserted into the particle collection mechanism (102). The particle collection mechanism (102) is connected to a positive... A pressure-compensating pipe (17) is inserted with a feed pipe (15). The pressure-compensating pipe (17) is connected to a positive pressure gas pipeline. One end of the feed pipe (15) is arranged along the axis of the sieve cylinder (10) and a baffle (16) is installed at the end. A flexible connecting pipe (19) connects the outer shell (8) and the particle collection mechanism (102). A back-blowing air knife (12) and a feeding trough (13) are respectively arranged on the upper and lower sides of the outer shell (8). The upper limit particle sieve The bottom end of the feed trough (13) in the separation mechanism (100) is connected to the top end of the feed pipe (15) in the lower limit particle removal mechanism (200). The top end of the feed pipe (15) in the upper limit particle removal mechanism (100) is connected to a Venturi gas-solid jet feeder. The internal pressure of the particle collection mechanism (102) is greater than the internal pressure of the outer shell (8). The bottom end of the feed pipe (15) is located at the end of the sieve cylinder (10) away from the particle collection mechanism (102).

2. The anti-clogging ultrafine screening screen according to claim 1, characterized in that: The baffle (16) is a conical disk structure, and the bottom surface of the baffle (16) is set towards the particle collection mechanism (102). The bottom surface of the baffle (16) and the pusher plate (11) are in clearance fit.

3. The anti-clogging ultrafine screening screen according to claim 1, characterized in that: The inner cylinder (9) has a hollowed-out groove structure on its surface, and the outer surface of the sieve cylinder (10) is attached to the inner wall of the inner cylinder (9).

4. The anti-clogging ultrafine screening screen according to claim 1, characterized in that: The back-blowing air knife (12) is located directly above the hollowed-out groove of the inner cylinder (9), and the back-blowing air knife (12) is connected to a positive pressure pipeline.

5. The anti-clogging ultrafine screening screen according to claim 1, characterized in that: A rolling support (7) is installed on the support plate (6). The rolling support (7) is a roller mechanism, and there are multiple rolling support (7) arranged around the axis of the inner cylinder (9). The rolling support (7) is tactilely connected to the inner cylinder (9).

6. The anti-clogging ultrafine screening screen according to claim 1, characterized in that: A flexible connecting pipe (14) is connected between the bottom end of the feed trough (13) in the upper limit particle removal mechanism (100) and the top end of the feed pipe (15) in the lower limit particle removal mechanism (200). The flexible connecting pipe (19) is fitted on the outside of the inner cylinder (9) and the sieve cylinder (10).

7. The anti-clogging ultrafine screening screen according to claim 1, characterized in that: A dynamic seal is provided at the connection between the inner cylinder (9) and the outer shell (8).

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