Ceramic dry-method powder preparation drum screen

Abstract

The utility model belongs to the technical field of building sanitary ceramic dry-method powder making, and particularly relates to a ceramic dry-method powder making rotary screen which comprises a supporting frame and a rotary screen dust cover arranged on one side of the supporting frame, a screening mechanism is arranged in the rotary screen dust cover, and a dust removing mechanism is arranged on the top of the supporting frame. The screening mechanism comprises a net cylinder, a transmission shaft, a first partition net, a second partition net, hedgehog balls, a supporting rod and a connecting rod. According to the ceramic dry-method powder preparation drum screen, partition baffles are additionally arranged on a simple roller screen, the drum screen is divided into a plurality of screening areas, hedgehog balls with different diameters are placed in the different partition areas, the purposes of cleaning a screen and pulverizing mud pies are achieved, anti-sticking Teflon spraying is conducted on screen wires of the screen, and the screening efficiency is improved; the material collecting conical hopper is made into a whole through welding of the high-density polymer plates, it is guaranteed that screened powder does not adhere to the wall, few powder balls exist, the powder forming requirement of a press is met, and the material collecting conical hopper plays a key role in popularization of the ceramic dry method powder manufacturing technology.

Description

Technical Field

[0001] The utility model relates to the technical field of dry powder making for building sanitary ceramics, in particular to a roller sieve for dry powder making of ceramics. Background Art

[0002] Before the forming of traditional ceramic tiles by a press, whether it is wet powder making or dry powder making, the powder must be screened to ensure that large particles are screened out, so as to ensure the surface quality of the brick blank and the fired product. The finer the screening, the better the effect! This is an essential technological process requirement. Among them, the powder produced by wet powder making generally can pass through a sieve of 10 mesh to 12 mesh due to good fluidity. However, the powder produced by dry powder making is difficult to pass through a sieve of 8 mesh because of poor fluidity and easy adhesion to the mesh. At the same time, the aggregate cone is easy to stick to the powder and does not drop the material, and it is also easy to form powder flakes (powder masses) due to sticking, resulting in product defects. To solve the problem of powder sticking, spraying Teflon (Teflon) needs to be replaced frequently because the powder slides down and rubs against the coating. Regular spraying of the cone coating will affect continuous production. Since the powder produced by dry powder making is prone to produce over-wet powder particles (mud masses), and the same amount of water cannot be drained synchronously with other parts of the green body during drying, it will cause fingertip cracks on the surface after firing in the kiln. As the main quality defect of dry powder making products, it seriously affects the popularization and application of dry powder making technology.

[0003] The existing dry powder roller sieve for ceramics cannot pass fine powder with a mesh size of more than 10 mesh. Since the powder for dry powder making of ceramics is formed by bonding multiple fine particles together with water as a binder, its appearance is rough and not smooth, and it is easy to powderize, and its screening permeability is extremely poor, and it is extremely easy to stick to the mesh and block the holes. Therefore, the requirement has to be lowered and only an 8-mesh sieve can be selected. However, after using an 8-mesh sieve, the probability of fingertip cracks on the surface of the product is increased due to the increase of larger particles in the powder. At the same time, when the mesh holes of the sieve are blocked, hitting the support rod 206 with a small hammer currently available is not enough to shake open the blocked mesh holes. When the existing roller sieve receiving cone is made of steel material, it is easy to stick to the wall, does not drop the material, and forms powder masses (sheets), resulting in pits on the surface of the product. After spraying the surface with Teflon, the problem of sticking is solved, but because it is not wear-resistant and the abrasiveness of ceramic powder is strong, the Teflon coating will be completely worn out in a very short time. The existing drive mode uses belt or chain drive. Due to the poor working conditions and large dust, it is easy to be damaged and difficult to repair.

[0004] Since the powder particles produced by dry powder making of ceramics are bonded by water as a binder from fine powder particles, rather than a single body formed by the drainage of mud droplets at high temperature like wet granulation of ceramics, it is not easy to cause powderization and peeling. As a result, it will powderize and peel off in each production link, resulting in poor fluidity of the powder and easy adhesion characteristics. Therefore, a roller sieve for dry powder making of ceramics needs to be proposed to solve the anti-sticking problem and reduce waste by crushing and screening large particles. Summary of the Utility Model

[0005] The purpose of the present utility model is to provide a ceramic dry powder making roller screen to solve the problems of screen sticking and mesh clogging and the problem of non-sticking and wear-resistant powder collecting cones mentioned in the above background technology.

[0006] To achieve the above object, the present utility model provides the following technical solution: A ceramic dry powder making roller screen includes a supporting frame and a roller screen dust-proof cover arranged on one side of the supporting frame. A screening mechanism is arranged inside the roller screen dust-proof cover, and a dust removal mechanism is arranged on the top of the supporting frame.

[0007] The screening mechanism includes a mesh cylinder, a transmission shaft, partition net one, partition net two, hedgehog balls, support rods and connecting rods. The mesh cylinder is arranged inside the roller screen dust-proof cover, and the mesh wires of the mesh cylinder are treated by Teflon PTFE spraying method. The transmission shaft is rotatably connected to one side of the roller screen dust-proof cover. Partition net one and partition net two are fixedly connected to the outer surface of the transmission shaft. The hedgehog balls are arranged inside the mesh cylinder. The support rods are fixedly connected to the outside of partition net two, and the connecting rods are fixedly connected to one side of the roller screen dust-proof cover.

[0008] Preferably, the dust removal mechanism includes a dust collection hopper, a dust suction motor, a dust suction pipe and a dust suction head. The dust collection hopper and the dust suction motor are arranged on the top of the supporting frame. The dust suction pipe is fixedly connected to the top of the supporting frame, and the dust suction head is arranged on one side of the dust suction pipe.

[0009] Preferably, a driving motor is arranged on the top of the supporting frame, a coupling is arranged on one side of the driving motor, a feed chute is arranged on the right side of the roller screen dust-proof cover, a collection hopper is arranged at the bottom of the roller screen dust-proof cover, a screen residue chute is arranged on the left side of the roller screen dust-proof cover, and the collection hopper is made by the method of integral welding of high-density polymer HDPE and steel structure combination.

[0010] Preferably, partition net one and partition net two divide the inside of the mesh cylinder into three regions. A plurality of small hedgehog balls are placed in the lowermost region, and a small number of large hedgehog balls are placed in other regions.

[0011] Preferably, a gap is left between partition net two and the mesh cylinder to ensure that when the powder rotates inside the mesh cylinder, the powder can move downward while preventing the hedgehog balls from drifting downward.

[0012] Preferably, there are six support rods, which are welded to the transmission shaft and connected to the outer circular support ring of the mesh cylinder. A two-mesh stainless steel coarse wire mesh is welded to the support rods.

[0013] Preferably, the outer surface of the hedgehog ball body is provided with protrusions, and the material range of the hedgehog ball is TPR, PVC hard and soft materials and similar materials.

[0014] Compared with the prior art, the beneficial effects of the present utility model are:

[0015] 1. The ceramic dry powder making roller screen divides the internal space of the mesh cylinder into three parts through the set screening mechanism by means of partition net one and partition net two. When the equipment is working, the hedgehog balls bounce due to elasticity in the partition and collide with partition net one, partition net two and the mesh cylinder, thus achieving the effect of cleaning the screen. As the screening reaches the lower end, large granular materials accumulate. By selecting multiple small hedgehog balls, the large particles will be crushed into qualified powder through the collision of the spikes, reducing the screen residue and increasing the efficiency and output.

[0016] 2. The ceramic dry powder making roller screen is provided with a dust removal mechanism. When the equipment is working, a large amount of dust is likely to fly. The dust can be adsorbed by the dust suction motor through the dust suction heads on both sides, enter the dust collection hopper through the dust suction pipeline for treatment, and optimize the working environment. Brief Description of the Drawings

[0017] Figure 1 is the overall structural schematic diagram of the present utility model;

[0018] Figure 2 is the internal structural schematic diagram of the present utility model;

[0019] Figure 3 is the structural schematic diagram of the dust removal mechanism of the present utility model;

[0020] Figure 4 is the internal structural schematic diagram of the mesh cylinder of the present utility model;

[0021] Figure 5 is the structural schematic diagram of the partition net of the present utility model.

[0022] In the figure: 1, support frame; 2, rolling screen dust-proof cover; 3, drive motor; 4, coupling; 5, feed chute; 6, screen residue chute; 7, collection cone hopper; 101, dust collection hopper; 102, dust suction motor; 103, dust suction pipeline; 104, dust suction head; 201, mesh cylinder; 202, transmission shaft; 203, partition net one; 204, partition net two; 205, hedgehog ball; 206, support rod; 207, connecting rod. Detailed Embodiment

[0023] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying 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 of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figures 1 - 5 , the present utility model provides a technical solution:

[0025] Embodiment 1:

[0026] A ceramic dry powder making roller screen, comprising a support frame 1 and a roller screen dust-proof cover 2 arranged on one side of the support frame 1. A screening mechanism is arranged inside the roller screen dust-proof cover 2, and a dust removal mechanism is arranged on the top of the support frame 1;

[0027] The screening mechanism includes a mesh cylinder 201, a transmission shaft 202, a partition net one 203, a partition net two 204, hedgehog balls 205, support rods 206 and connecting rods 207. The mesh cylinder 201 is arranged inside the roller screen dust-proof cover 2, and the wire mesh of the mesh cylinder 201 is treated by Teflon PTFE spraying. The transmission shaft 202 is rotatably connected to one side of the roller screen dust-proof cover 2. The partition net one 203 and the partition net two 204 are fixedly connected to the outer surface of the transmission shaft 202. The partition net one 203 and the partition net two 204 divide the inside of the mesh cylinder 201 into three regions. A plurality of small hedgehog balls 205 are placed in the lowermost region, and a small number of large hedgehog balls 205 are placed in other regions. A gap is left between the partition net two 204 and the mesh cylinder 201 to ensure that when the powder rotates inside the mesh cylinder 201, the powder can move downward while blocking the downward drift of the hedgehog balls 205. The hedgehog balls 205 are arranged inside the mesh cylinder 201, and convex thorns are arranged on the outer surface of the hedgehog ball 205. The material range of the hedgehog balls 205 is TPR and PVC hard and soft materials and similar materials. The support rods 206 are fixedly connected to the outside of the partition net two 204. There are six support rods 206, which are welded to the transmission shaft 202 and connected to the outer circular support ring of the mesh cylinder 201. A two-mesh stainless steel coarse wire mesh is selected and welded on the support rods. The connecting rod 207 is fixedly connected to one side of the roller screen dust-proof cover 2.

[0028] In the feeding end partition and the middle partition, hedgehog balls 205 with a diameter of more than 10 cm are placed, mainly replacing the way of cleaning the mesh by the hammer of the traditional roller screen. When the mesh cylinder 201 rotates at a high speed, the hedgehog balls 205 will be lifted and roll on the mesh cylinder 201, so as to clean the mesh holes of the mesh cylinder 201. In the partition at the end of the screened residue discharge, hedgehog balls 205 with a diameter of 4 cm - 6 cm are placed. The powder in this partition is relatively coarse-grained powder after previous screening. By placing small and many hedgehog balls 205, it is broken and pulverized into fine materials and screened into the collecting hopper 7 to become available powder. At the same time, the small-diameter hedgehog balls 205 will also roll in the mesh cylinder 201 to achieve the effect of cleaning the mesh.

[0029] Embodiment Two:

[0030] On the basis of Embodiment One, the dust removal mechanism includes a dust collecting hopper 101, a dust suction motor 102, a dust suction pipe 103 and a dust suction head 104. The dust collecting hopper 101 and the dust suction motor 102 are arranged on the top of the support frame 1. The dust suction pipe 103 is fixedly connected to the top of the support frame 1. The dust suction head 104 is arranged on one side of the dust suction pipe 103.

[0031] At the top of the support frame 1, a driving motor 3 is provided. On one side of the driving motor 3, a coupling 4 is provided. On the right side of the rotary screen dust cover 2, a feed chute 5 is provided. At the bottom of the rotary screen dust cover 2, a collecting hopper 7 is provided. On the left side of the rotary screen dust cover 2, a screen residue chute 6 is provided. The collecting hopper 7 is fabricated by the method of integral welding and steel structure combination of high-density polymer HDPE. The collecting hopper 7 includes the part below the horizontal direction of the cylinder screen transmission shaft 202. In production practice, by selecting high-density HDPE plates and welding them into a whole, and strengthening and connecting the periphery with angle steel. Although the anti-adhesion property of high-density HDPE plates is slightly worse than that of Teflon, its wear resistance is better. By designing a large taper aggregate hopper, its comprehensive application effect is better.

[0032] Working principle:

[0033] Through the provided dust removal mechanism, when the equipment is working, a large amount of dust is likely to fly. The dust can be adsorbed by the dust suction motor 102 through the dust suction heads 104 on both sides, and enter the inside of the dust collection hopper 101 through the dust suction pipeline 103 for treatment, optimizing the working environment.

[0034] Furthermore, through the provided screening mechanism, the internal space of the mesh cylinder 201 is divided into three parts by the partition net one 203 and the partition net two 204. When the equipment is working, the hedgehog balls 205 bounce inside the partition due to the elastic force and collide with the partition net one 203, the partition net two 204 and the mesh cylinder 201, thus achieving the function of cleaning the screen. As the screening reaches the lower end, large granular materials accumulate. By selecting multiple small hedgehog balls 205, the large particles will be crushed into qualified powder by the collision of the sharp spines, reducing the screen residue and increasing the efficiency and output.

[0035] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising a..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the element.

Claims

1. A ceramic dry powder making roller sieve, comprising a support frame (1) and a rolling sieve dust cover (2) arranged on one side of the support frame (1), characterized in that: Inside the rotary screen dust cover (2), a screening mechanism is provided, and on the top of the support frame (1), a dust removal mechanism is provided; The screening mechanism includes a mesh cylinder (201), a transmission shaft (202), a partition net one (203), a partition net two (204), a hedgehog ball (205), a support rod (206) and a connecting rod (207). The mesh cylinder (201) is arranged inside the rotary screen dust cover (2), the transmission shaft (202) is rotatably connected to one side of the rotary screen dust cover (2), the partition net one (203) and the partition net two (204) are fixedly connected to the outer surface of the transmission shaft (202), the hedgehog ball (205) is arranged inside the mesh cylinder (201), the support rod (206) is fixedly connected to the outside of the partition net two (204), and the connecting rod (207) is fixedly connected to one side of the rotary screen dust cover (2).

2. The roller screen for dry ceramic powder preparation according to claim 1, characterized in that: The dust removal mechanism includes a dust collection hopper (101), a dust suction motor (102), a dust suction pipe (103) and a dust suction head (104). The dust collection hopper (101) and the dust suction motor (102) are arranged on the top of the support frame (1), the dust suction pipe (103) is fixedly connected to the top of the support frame (1), and the dust suction head (104) is arranged on one side of the dust suction pipe (103).

3. A ceramic dry powder making roller sieve according to claim 1, characterized in that: On the top of the support frame (1), a driving motor (3) is provided, on one side of the driving motor (3), a coupling (4) is provided, on the right side of the rotary screen dust cover (2), a feed chute (5) is provided, at the bottom of the rotary screen dust cover (2), a collection cone hopper (7) is provided, and on the left side of the rotary screen dust cover (2), a residue chute (6) is provided.

4. A ceramic dry powder making roller sieve according to claim 1, wherein: The partition net one (203) and the partition net two (204) divide the interior of the mesh cylinder (201) into three regions.

5. A ceramic dry powder making roller sieve according to claim 1, characterized in that: A gap is left between the partition net two (204) and the mesh cylinder (201).

6. A ceramic dry powder making roller screen according to claim 1, characterized in that: Six support rods (206) are provided.

7. A ceramic dry powder making roller sieve according to claim 1, characterized in that: Convex thorns are provided on the outer surface of the hedgehog ball (205).

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