Screening device for preparing ferroelectric ceramics

Abstract

The screening device for preparing the ferroelectric ceramics comprises a material barrel, a net barrel, a swinging mechanism and a driving mechanism are arranged in the material barrel, the swinging mechanism comprises a swinging rod and a springback assembly, the driving mechanism is used for driving the swinging rod and the net barrel to rotate, the net barrel screens materials through self rotation, and the springback assembly is used for driving the swinging rod to rotate reversely and reset. The swing rod knocks the net cylinder through forward and reverse rotation to trigger vibration, the swing rod comprises a rotating disc, a rocker arm and a pendulum bob, and the swing rod knocks the net cylinder through the pendulum bob. The motor is used for driving the mesh cylinder to rotate, meanwhile, the swing rod can be driven to rotate, materials can be screened through rotation of the mesh cylinder, the second cover shell can be hit through rotation of the swing rod to enable the mesh cylinder to vibrate, and therefore the materials can be prevented from blocking meshes in the mesh cylinder, and the material screening efficiency of the mesh cylinder is maintained.

Description

Technical Field

[0001] This utility model relates to the field of ferroelectric ceramic preparation technology, and in particular to a sieving device for preparing ferroelectric ceramics. Background Technology

[0002] Ferroelectric ceramics are ceramic materials that exhibit ferroelectric properties. Common ferroelectric ceramics are mostly perovskite-type structures, such as barium titanate ceramics and their solid solutions. There are also tungsten bronze-type, bismuth-containing layered compounds, and pyrochlore-type structures.

[0003] The preparation process of ferroelectric ceramics mainly includes steps such as raw material screening, formulation, mixing, grinding, molding, and sintering. In manufacturing ferroelectric ceramic components, the uniformity of ceramic particle size is crucial to their performance and stability. However, since the size and shape of ceramic particles are often affected by factors such as thermal shrinkage and uneven shrinkage during the curing process, sieving is necessary. Sieving is an important step in ensuring the uniformity of particle size distribution in ferroelectric ceramic components, which helps improve the performance and precision of the components.

[0004] A search revealed that Chinese utility model patent CN220781096U discloses a sieving device for preparing electroceramics, including a sieving tank. The sieving tank includes a tank body with a top cover. Inside the tank body is a sieve partition plate, and the top of the partition plate has an anti-clogging mechanism. The anti-clogging mechanism includes a lever, with a drive shaft fixedly mounted on the top of the lever. A motor is mounted on the top of the drive shaft, and the motor is located on the top of the top cover, with its output end fixedly connected to the top of the drive shaft. This application uses the rotation of the lever on the surface of the partition plate to agitate the electroceramic raw material powder to prevent filter clogging. However, this only prevents the raw material from accumulating on the filter surface but cannot prevent the raw material powder from getting stuck in the mesh. Therefore, this device cannot effectively solve the problem of filter clogging and cannot maintain the efficiency of the device in sieving raw materials. Utility Model Content

[0005] In view of the above-mentioned prior art, the present invention provides a sieving device for preparing ferroelectric ceramics, and the main technical problem to be solved is how to ensure the sieving efficiency of ferroelectric ceramic raw materials.

[0006] To achieve the above objectives, the technical solution of this utility model embodiment is implemented as follows:

[0007] A sieving device for preparing ferroelectric ceramics includes a material bucket, a screen cylinder, a swing mechanism, and a drive mechanism. The swing mechanism includes a swing rod and a rebound assembly. The drive mechanism drives the swing rod and the screen cylinder to rotate. The screen cylinder sieves materials by rotating itself. The rebound assembly drives the swing rod to reverse and reset. The swing rod strikes the screen cylinder by rotating forward and backward to induce vibration. The swing rod includes a turntable, a rocker arm, and a pendulum. The swing rod strikes the screen cylinder by the pendulum.

[0008] Furthermore, the material bucket has circular openings on both sides, and the material bucket is rotatably connected to a first cover and a second cover at the two circular openings respectively. A feed inlet is opened on one side of the first cover, and a feed hopper is fixedly connected to the top of the side of the material bucket near the first cover. The bottom of the feed hopper extends into the interior of the first cover at the feed inlet.

[0009] Furthermore, the mesh cylinder is fixedly connected between the first cover and the second cover, and the bottom of the material barrel has a discharge port below the mesh cylinder. Support rods are fixedly connected to both ends of the bottom of the material barrel, and the bottom ends of the four support rods are fixedly connected to the same base. The bottom end of the base is provided with several rubber pads.

[0010] Furthermore, a driven wheel is connected to the outer side of one end of the second cover outside the material barrel via a key. The drive mechanism includes a motor, which is fixedly connected to one side of the top of the base. A driving wheel is connected to the outside of the motor's output shaft via a key. The driving wheel meshes with the driven wheel, and the diameter of the driving wheel is smaller than the diameter of the driven wheel.

[0011] Furthermore, a circular through hole is provided at the bottom of the material barrel near the second cover. The rebound assembly includes a sleeve, which is fixedly connected to the material barrel at the circular through hole. A connecting shaft is rotatably connected inside the sleeve, and a spring is fixedly connected between the connecting shaft and the sleeve.

[0012] Furthermore, a spur gear is connected to the end of the connecting shaft outside the material barrel via a key, and an incomplete gear is connected to the end of the motor output shaft via a key. The incomplete gear meshes with the spur gear, and the turntable is fixedly connected to the end of the connecting shaft inside the material barrel.

[0013] Furthermore, there are two rocker arms and two pendulums. The two rocker arms are fixedly connected to the top two sides of the turntable, and the two pendulums are fixedly connected to the inner top of the two rocker arms. The two pendulums are located at the bottom of the two sides of the second cover.

[0014] Furthermore, a discharge hopper is fixedly connected to the material barrel at the discharge port, and the discharge hopper is in the shape of an inverted trapezoidal platform.

[0015] The beneficial effects of this utility model are as follows:

[0016] 1. This device uses a motor to drive the screen cylinder to rotate while simultaneously driving the swing arm to rotate. The rotation of the screen cylinder can screen materials, while the rotation of the swing arm can strike the second cover to vibrate the screen cylinder. This prevents materials from clogging the mesh on the screen cylinder, thus maintaining its screening efficiency. In addition, since the two pendulums on the swing arm strike the second cover using the traction force driven by the motor and the elastic force of the spring, respectively, when the two forces are not equal, the screen cylinder can alternately generate different degrees of vibration. This can more effectively disturb the material and improve its flowability, thereby enhancing the screening effect of the screen cylinder.

[0017] 2. By using a smaller diameter driving wheel to drive a larger diameter driven wheel, the second cover can rotate the screen cylinder at a relatively slow speed. In this case, the material can tumble along with the rotation of the screen cylinder, thus ensuring sufficient contact between the two without generating excessive centrifugal force, thereby ensuring a smooth and stable material screening process.

[0018] 3. By setting a discharge hopper at the discharge port, the trapezoidal shape of the discharge hopper can guide and collect the falling material, thus facilitating material collection and avoiding material waste. Attached Figure Description

[0019] Figure 1 This is a front sectional view of a sieving device for preparing ferroelectric ceramics according to Embodiment 1 of this application;

[0020] Figure 2 This is a perspective view of the swing arm of a sieving device for preparing ferroelectric ceramics according to Embodiment 1 of this application;

[0021] Figure 3 This is a front cross-sectional view of a sieving device for preparing ferroelectric ceramics according to Embodiment 2 of this application.

[0022] Explanation of icon numbers:

[0023] Material bucket 1, first cover shell 2, feed hopper 3, second cover shell 4, driven wheel 5, spur gear 6, sleeve 7, motor 8, driving wheel 9, incomplete gear 10, connecting shaft 11, swing arm 12, turntable 1201, rocker arm 1202, pendulum 1203, base 13, mesh cylinder 14, support rod 15, spring 16, discharge hopper 17. Detailed Implementation

[0024] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used in this specification of this utility model is for the purpose of describing particular embodiments only and is not intended to limit the utility model. In the following description, the expression "some embodiments" refers to a subset of all possible embodiments; however, it should be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments and can be combined with each other without conflict.

[0025] It should also be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "inner," "outer," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0026] Example 1

[0027] See attached document Figure 1-2 This application provides a screening device for preparing ferroelectric ceramics, including a material bucket 1. The material bucket 1 is provided with a screen cylinder 14, a swing mechanism and a drive mechanism. The swing mechanism includes a swing rod 12 and a rebound assembly. The drive mechanism is used to drive the swing rod 12 and the screen cylinder 14 to rotate. The screen cylinder 14 screens the material by rotating itself. The rebound assembly is used to drive the swing rod 12 to reverse and reset. The swing rod 12 strikes the screen cylinder 14 by rotating forward and backward to induce vibration. The swing rod 12 includes a turntable 1201, a rocker arm 1202 and a pendulum 1203. The swing rod 12 strikes the screen cylinder 14 by the pendulum 1203, and the vibration is used to assist the screen cylinder 14 in screening the material, which can avoid scraping the material and causing further wear.

[0028] Preferably, the material bucket 1 has circular openings on both sides, and the material bucket 1 is rotatably connected to the first cover 2 and the second cover 4 at the two circular openings respectively. The first cover 2 has a feed inlet on one side, and the top of the material bucket 1 near the first cover 2 is fixedly connected to the feed hopper 3. The bottom end of the feed hopper 3 extends into the interior of the first cover 2 at the feed inlet. The part of the feed hopper 3 inside the first cover 2 is suspended, that is, the part of the feed hopper 3 inside the first cover 2 does not contact the inner wall of the feed hopper 3, so as to avoid the rotation of the first cover from affecting the stability of the feed hopper 3.

[0029] When screening ferroelectric ceramics, the material can be fed into the material bucket 1 from the feed hopper 3. At this time, the material can enter the screen cylinder 14 from the first cover shell 2, and then the motor 8 can be started.

[0030] Preferably, the second cover 4 is connected to a driven wheel 5 by a key at one end outside the material barrel 1. The driving mechanism includes a motor 8, which is fixedly connected to one side of the top of the base 13. The output shaft of the motor 8 is connected to a driving wheel 9 by a key. The driving wheel 9 meshes with the driven wheel 5, and the diameter of the driving wheel 9 is smaller than the diameter of the driven wheel 5. The driving wheel 9 drives the driven wheel 5 to rotate, which can achieve the effect of deceleration. This ensures that the mesh cylinder 14 can drive the material to tumble without causing the material to generate excessive centrifugal force.

[0031] The motor 8 can drive the drive wheel 9 and the incomplete gear 10 to rotate. The drive wheel 9 drives the second cover 4 to rotate through the driven wheel 5. The second cover 4 can then drive the screen cylinder 14 to rotate. At this time, the material can roll inside the screen cylinder 14 as it rotates, thus allowing the material to fully contact the screen cylinder 14 and achieve the effect of screening the material.

[0032] Preferably, a spur gear 6 is connected to the end of the connecting shaft 11 outside the material barrel 1 by a key, and an incomplete gear 10 is connected to the output shaft of the motor 8 by a key. The incomplete gear 10 meshes with the spur gear 6, and the turntable 1201 is fixedly connected to the end of the connecting shaft 11 inside the material barrel 1.

[0033] Meanwhile, the rotation of the incomplete gear 10 can intermittently drive the spur gear 6 to rotate. During this process, when the incomplete gear 10 meshes with the spur gear 6, the spur gear 6 can drive the swing arm 12 to deflect through the connecting shaft 11, so that the pendulum 1203 on one side can hit the second cover shell 4, thereby causing the mesh cylinder 14 to vibrate.

[0034] When the incomplete gear 10 rotates to the point where it no longer meshes with the spur gear 6, the spring 16 can cause the rocker arm 12 to deflect in the opposite direction through its own elasticity, so that the pendulum 1203 on the other side can strike the second cover 4, thereby causing further vibration.

[0035] Preferably, the mesh cylinder 14 is fixedly connected between the first cover shell 2 and the second cover shell 4. The bottom end of the material barrel 1 is provided with a discharge port below the mesh cylinder 14. Support rods 15 are fixedly connected to both ends of the bottom end of the material barrel 1. The bottom ends of the four support rods 15 are fixedly connected to the same base 13. The bottom end of the base 13 is provided with several rubber pads.

[0036] Preferably, a circular through hole is provided at the bottom end of the material bucket 1 near the second cover 4. The rebound assembly includes a sleeve 7, which is fixedly connected to the material bucket 1 at the circular through hole. A connecting shaft 11 is rotatably connected inside the sleeve 7, and a spring 16 is fixedly connected between the connecting shaft 11 and the sleeve 7. There are two rocker arms 1202 and two pendulums 1203. The two rocker arms 1202 are fixedly connected to the top two sides of the turntable 1201, and the two pendulums 1203 are fixedly connected to the inner top of the two rocker arms 1202, and the two pendulums 1203 are located at the bottom ends of the two sides of the second cover 4.

[0037] Since the power for the two pendulums 1203 to strike the screen cylinder 14 comes from the traction force driven by the motor 8 and the elastic force of the spring 16, when these two forces are inconsistent, the two pendulums 1203 can make the screen cylinder 14 vibrate alternately to different degrees, thus more effectively disturbing the material and enhancing its fluidity, thereby enhancing the screening efficiency of the screen cylinder 14 for the material.

[0038] The screen cylinder 14 screens the material, allowing small-diameter materials to be shaken off and fall out of the material bucket 1 from the discharge port. Therefore, placing a container at the discharge port can collect the material, while large-diameter materials will remain in the screen cylinder 14, thus achieving the screening effect of the material.

[0039] Example 2

[0040] See attached document Figure 3 This application provides a sieving device for preparing ferroelectric ceramics. Compared with Example 1, in order to facilitate material collection, the material bucket 1 is fixedly connected to the discharge port with a discharge hopper 17, which is in the shape of an inverted trapezoidal platform.

[0041] The inverted, trapezoidal discharge hopper 17 can collect and guide the material as it falls, thus facilitating material collection.

[0042] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. The protection scope of this utility model should be determined by the protection scope of the stated claims.

Claims

1. A sieving device for preparing ferroelectric ceramics, comprising a material container (1), characterized in that, The material hopper (1) is provided with a screen cylinder (14), a swing mechanism and a drive mechanism. The swing mechanism includes a swing rod (12) and a rebound assembly. The drive mechanism is used to drive the swing rod (12) and the screen cylinder (14) to rotate. The screen cylinder (14) screens materials by rotating itself. The rebound assembly is used to drive the swing rod (12) to reverse and reset. The swing rod (12) strikes the screen cylinder (14) by rotating forward and backward to induce vibration. The swing rod (12) includes a turntable (1201), a rocker arm (1202) and a pendulum (1203). The swing rod (12) strikes the screen cylinder (14) through the pendulum (1203).

2. The sieving device for preparing ferroelectric ceramics according to claim 1, characterized in that, The material barrel (1) has circular openings on both sides, and the material barrel (1) is rotatably connected to the first cover (2) and the second cover (4) at the two circular openings respectively. The first cover (2) has a feed inlet on one side, and the top of the material barrel (1) near the first cover (2) is fixedly connected to a feed hopper (3). The bottom end of the feed hopper (3) extends into the interior of the first cover (2) at the feed inlet.

3. The sieving device for preparing ferroelectric ceramics according to claim 2, characterized in that, The mesh cylinder (14) is fixedly connected between the first cover shell (2) and the second cover shell (4). The bottom end of the material barrel (1) is provided with a discharge port below the mesh cylinder (14). Support rods (15) are fixedly connected to both ends of the bottom end of the material barrel (1). The bottom ends of the four support rods (15) are fixedly connected to the same base (13). The bottom end of the base (13) is provided with several rubber pads.

4. The sieving device for preparing ferroelectric ceramics according to claim 3, characterized in that, The second cover (4) is connected to a driven wheel (5) by a key at one end outside the material barrel (1). The driving mechanism includes a motor (8), which is fixedly connected to one side of the top of the base (13). The output shaft of the motor (8) is connected to a driving wheel (9) by a key. The driving wheel (9) meshes with the driven wheel (5), and the diameter of the driving wheel (9) is smaller than the diameter of the driven wheel (5).

5. The sieving device for preparing ferroelectric ceramics according to claim 4, characterized in that, The material bucket (1) has a circular through hole at the bottom end of the side near the second cover (4). The rebound assembly includes a sleeve (7). The sleeve (7) is fixedly connected to the material bucket (1) at the circular through hole, and a connecting shaft (11) is rotatably connected inside the sleeve (7). A spring (16) is fixedly connected between the connecting shaft (11) and the sleeve (7).

6. The sieving device for preparing ferroelectric ceramics according to claim 5, characterized in that, The connecting shaft (11) is connected to a spur gear (6) by a key at one end outside the material barrel (1). The output shaft of the motor (8) is connected to an incomplete gear (10) by a key at one end. The incomplete gear (10) meshes with the spur gear (6). The turntable (1201) is fixedly connected to the connecting shaft (11) at one end inside the material barrel (1).

7. The sieving device for preparing ferroelectric ceramics according to claim 6, characterized in that, The number of rocker arms (1202) and pendulums (1203) are both two. The two rocker arms (1202) are fixedly connected to the top two sides of the turntable (1201), and the two pendulums (1203) are fixedly connected to the inner top of the two rocker arms (1202), and the two pendulums (1203) are located at the bottom of the two sides of the second cover (4).

8. The sieving device for preparing ferroelectric ceramics according to claim 3, characterized in that, The material barrel (1) is fixedly connected to a discharge hopper (17) at the discharge port, and the discharge hopper (17) is in the shape of an inverted trapezoidal platform.

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