Anti-crushing material screening device

Abstract

The utility model relates to an anti-breaking material screening device, which comprises a screen drum 10, a rotary driving lever 20 and a case 30, the rotary driving lever 20 rotates in the screen drum 10, the screen drum 10 is arranged in the case 30, and the screen drum is provided with a screen drum dip angle alpha. The utility model has the beneficial effects that the fixed screen drum which is obliquely arranged is adopted, the rotary deflector rod is adopted to promote the movement of a material agent, the crushing risk of the material agent in the screening process can be reduced, the screen drum with the adjustable inclination angle is adopted to control the flowing speed of the material agent, a good screening effect and a good crushing prevention effect can be obtained, and the screening efficiency is improved. And the case with the dust removal opening can remove dust, so that the environment is protected, and the screening quality is further improved.

Description

Technical Field

[0001] This utility model relates to the field of material screening technology, and in particular to a material screening device that prevents breakage. Background Technology

[0002] As the core material of dry gas desulfurization, coal gas desulfurization feedstock is an important material in the coal gas purification systems of the chemical and metallurgical industries. However, this feedstock is fragile and prone to breakage and pulverization during production and transportation due to compression and collisions. Directly filling the feedstock with these fragments and powders increases the resistance of the dry desulfurization system, affects the overall desulfurization efficiency, and increases the system's energy consumption. Therefore, the feedstock needs to be screened before filling to separate out pulverized and broken particles that do not meet the required particle size. Due to the fragility of the dry gas desulfurization feedstock, commonly used screening equipment such as vibrating screens and drum screens are not suitable for its processing. Currently, manual screening is still the most common method, but it is labor-intensive, inefficient, and generates significant secondary dust, impacting the environment and human health. Summary of the Invention

[0003] The purpose of this invention is to propose a sieve device for preventing breakage of materials, thereby enabling the mechanized processing of fragile materials.

[0004] To achieve the above objectives, the technical solution of this utility model is: a sieve for preventing breakage of materials, comprising a sieve cylinder 10, a rotating lever 20 and a housing 30, wherein the rotating lever 20 rotates within the sieve cylinder 10, the sieve cylinder 10 is disposed within the housing 30, and the sieve cylinder is provided with a sieve cylinder inclination angle α.

[0005] Furthermore, in order to ensure that the material has a good movement state in the screen cylinder, the screen cylinder inclination angle α is the angle between the screen cylinder axis and the ground plane, and the screen cylinder inclination angle α is 5°~16°.

[0006] Furthermore, in order to obtain the optimal screen cylinder inclination angle, the screen cylinder is provided with a screen cylinder rotating shaft 11 and a screen cylinder adjusting shaft 12. The screen cylinder adjusting shaft drives the screen cylinder to rotate around the screen cylinder rotating shaft to adjust the screen cylinder inclination angle α.

[0007] Furthermore, a preferred screen cylinder adjustment structure is provided in which the housing is provided with a screen cylinder adjustment groove 31 and a screen cylinder support shaft 32, the screen cylinder adjustment shaft 12 moves within the screen cylinder adjustment groove 31, a screen cylinder pressing screw 33 is provided between the screen cylinder adjustment shaft 12 and the screen cylinder support shaft 32, and a screen cylinder fastening nut 13 is provided on the screen cylinder adjustment shaft 12.

[0008] Furthermore, to achieve a uniform and stable material agitation effect, multiple rotating levers 20 are mounted on a rotating lever shaft 21. The multiple rotating levers 20 are spirally and equally distributed around the rotating lever shaft 21, and each rotating lever has a lever head 22 at its end, which rotates close to the screen cylinder.

[0009] Furthermore, in order to reduce the height of the material falling into the screen cylinder, the feed end of the screen cylinder 10 is provided with a lever drive motor 23 and a feed port 14. The lever drive motor 23 drives the rotating lever 20 to rotate through a reduction gear pair 25. The lever drive motor 23 is located above the axis of the rotating lever 20, and the feed port 14 is located below the axis of the rotating lever 20. The housing 30 is provided with a feed cylinder 34 connected to the feed port 14.

[0010] Furthermore, the discharge end of the screen cylinder 10 is provided with a discharge port 15, and the machine box 30 is provided with a discharge chute 35 corresponding to the discharge port 15.

[0011] Furthermore, the lower side of the chassis 30 is provided with an ash hopper 36, and the lower end of the ash hopper is provided with an ash outlet 37.

[0012] Furthermore, to avoid dust pollution, the chassis is provided with a dust removal port 38, which is connected to a dust collector 40.

[0013] Furthermore, in order to assemble the chassis and the screen cylinder, the upper end of the chassis is provided with a chassis cover 39, and the chassis cover 39 is provided with the dust removal port 38.

[0014] The beneficial effects of this utility model are as follows: the use of a fixed screen cylinder with an inclined setting and a rotating lever to promote the movement of the material can reduce the risk of breakage of the material during screening; the use of a screen cylinder with an adjustable inclination angle to control the flow speed of the material can achieve good screening effect and prevent breakage; the machine box with a dust removal port can remove dust, protect the environment, and further improve the screening quality.

[0015] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0016] Figure 1 This is a structural diagram of the utility model;

[0017] Figure 2 This is a structural diagram of the screen cylinder of this utility model inside the machine casing;

[0018] Figure 3 This is an exploded view of the structure of the screen cylinder and the casing of this utility model;

[0019] Figure 4 This is a side sectional view of the present invention;

[0020] Figure 5 This is a diagram of the external structure of the sieve cylinder of this utility model;

[0021] Figure 6 This is a cross-sectional view of the sieve cylinder of this utility model;

[0022] Figure 7 This is a diagram of the rotary lever mechanism of this utility model;

[0023] Figure 8 This is an axial structural diagram of the sieve cylinder of this utility model;

[0024] Figure 9 This is a schematic diagram of the combined structure of this utility model and a dust collector. Detailed Implementation

[0025] Example:

[0026] like Figures 1 to 9 A sieve device for preventing breakage of materials includes a sieve cylinder 10, a rotating lever 20, and a housing 30.

[0027] Multiple rotating levers 20 are mounted on a rotating lever shaft 21. In this embodiment, to obtain a uniform and stable material agitation effect, 14 rotating levers 20 are provided on the rotating lever shaft 21, and the 14 rotating levers 20 are evenly distributed spirally around the rotating lever shaft 21. The ends of the rotating levers are provided with lever heads 22. In order to avoid damage to the material by rotating the levers, the lever heads 22 are made of steel lined with rubber or steel lined with silicone.

[0028] The rotary lever 20 is driven to rotate by a lever drive motor 23, which in turn drives the rotary lever 20 to rotate via a reduction gear pair 25. The rotary lever 20 rotates at a low speed, and the lever drive motor 23 can be a low-speed motor, a servo motor, a hydraulic motor, or a pneumatic motor.

[0029] The screen cylinder 10 adopts a Johnson mesh structure with a mesh gap between 2.8mm and 3.0mm. The mesh is woven and welded from 3mm stainless steel strips. End plates 16 are provided at the feed and discharge ends of the screen cylinder 10, and support frames 17 are provided on both sides of the screen cylinder 10. The end plates 16 and the two support frames 17 constitute the frame of the screen cylinder. A screen cylinder rotating shaft 11 is provided on the support frame 17 near the feed end, and a screen cylinder adjusting shaft 12 is provided on the support frame near the discharge end. The adjusting shaft is threaded. A motor frame 18 and a feed inlet 14 are provided at the feed end of the screen cylinder 10. The motor frame 18 is positioned above the center line of the screen cylinder, and the feed inlet 14 is positioned below the center line of the screen cylinder. A discharge outlet 15 is provided at the discharge end of the screen cylinder 10.

[0030] The two ends of the rotating lever shaft 21 are mounted at the center of the two end plates 16, and the lever drive motor 23 is mounted on the motor frame 18. The rotating lever shaft 21 is coaxial with the center of the screen cylinder 10. The rotating lever 20 rotates inside the screen cylinder 10, and when the rotating lever 20 rotates, the lever head 22 rotates close to the screen cylinder 10.

[0031] The housing 30 has an inclined cavity, with the feed end higher than the discharge end. On the feed end side, the housing has a lever shaft mounting groove 3a. At the bottom of the groove 3a is a lever bearing 3b, which consists of two semi-circular bearing blocks. The lower semi-circular bearing block is fixed to the housing 30, while the upper semi-circular bearing block is movably mounted on the housing 30. On the discharge end side, the housing has a screen cylinder adjusting groove 31 and a screen cylinder support shaft 32.

[0032] The lower side of the casing 30 is provided with a dust discharge hopper 36, which is an inverted cone-shaped dust discharge hopper, and the lower end of the dust discharge hopper is provided with a dust discharge port 37. The upper end of the casing is provided with a casing cover 39, and the top of the casing cover 39 is provided with a dust removal port 38, which is connected to the dust collector 40.

[0033] The screen cylinder 10 is installed in the space formed by the housing 30 and the housing cover 39. The screen cylinder rotating shaft 11 is inserted into the housing 10 through the lever shaft mounting groove 3a, and the screen cylinder adjusting shaft 12 is inserted into the housing 10 through the screen cylinder adjusting groove 31. The housing cover 30 is fastened onto the housing 30. The lever bearing 3b supports the screen cylinder rotating shaft 11. The screen cylinder adjusting shaft 12 can move within the screen cylinder adjusting groove 31 and can push the screen cylinder 10 to rotate around the screen cylinder rotating shaft 11, adjusting the screen cylinder tilt angle α. A screen cylinder pressing screw 33 is provided between the screen cylinder adjusting shaft 12 and the screen cylinder support shaft 32. The screen cylinder pressing screw 33 includes a first adjusting bolt 33a, a second adjusting bolt 33b, and a threaded sleeve 33c. The threads of the first adjusting bolt 33a and the second adjusting bolt 33b have opposite directions, and the two ends of the threaded sleeve 33c are respectively connected to the first adjusting bolt 33a and the second adjusting bolt 33b. The first adjusting bolt 33a is hinged to the screen cylinder adjusting shaft 12, and the second adjusting bolt 33b is hinged to the screen cylinder support shaft 32. Rotating the threaded sleeve 33c adjusts the position of the screen cylinder adjusting shaft 12, thereby adjusting the inclination angle of the screen cylinder 10. A screen cylinder fastening nut 13 is provided on the screen cylinder adjusting shaft 12, which presses the first adjusting bolt 33a onto the housing 30, thus fixing the screen cylinder 10 to the housing 30.

[0034] The inclined cavity of the housing 30 provides an initial screen cylinder inclination angle for the screen cylinder 10. The screen cylinder inclination angle α is the angle between the screen cylinder axis and the ground plane. The screen cylinder pressing screw 33 can further adjust the screen cylinder inclination angle. In this embodiment, the adjustment range of the screen cylinder inclination angle α is 5°~16°.

[0035] The screen cylinder 10 is housed inside the casing 30, the lever drive motor 23 is positioned above the axis of the rotating lever 20, and the feed inlet 14 is positioned below the axis of the rotating lever 20. The casing 30 is also equipped with a feed cylinder 34 connected to the feed inlet 14.

[0036] The casing 30 is provided with a discharge chute 35, which corresponds to the discharge port 15 of the screen cylinder.

[0037] During material screening, the material enters the screen cylinder 10 from the feed cylinder 34 through the feed inlet 14. The feed inlet 14 is located below the axis of the rotating lever 20, close to the bottom of the screen cylinder, which can reduce the drop when the material enters the screen cylinder and prevent the material from breaking during the falling process.

[0038] Under the influence of the screen cylinder inclination angle α, the material moves towards the discharge port 15 within the screen cylinder. The screen cylinder inclination angle α needs to be set at an appropriate angle. If the angle is too large, it will accelerate the movement of the material and reduce the screening effect; if the angle is too small, it will cause the material to move slowly or even accumulate, which is also not conducive to the screening of the material. The optimal screen cylinder inclination angle α can be obtained by adjusting the position of the screen cylinder adjusting shaft 12. This ensures that the material moves evenly and stably within the screen cylinder under the action of the screen cylinder inclination angle and the rotating lever 20.

[0039] By employing multiple rotating levers 20 evenly distributed spirally around the rotating lever shaft 21, a uniform and stable material agitation effect can be achieved. Powdered materials and fragments usually remain on the inner surface of the screen cylinder, and the rotation of the lever head 22 close to the screen cylinder can promote the screening off of powdered materials and fragments.

[0040] After being screened by the screen cylinder, the granular material is discharged from the discharge port 15 through the discharge chute 35. The pulverized material and fragments that have been screened fall into the ash hopper 36 and are discharged through the ash outlet 37.

[0041] like Figure 9 The dust collection port 38 of the housing is connected to the dust collector 40. The dust generated during the screening process is treated by the dust collector, thus avoiding environmental pollution.

Claims

1. A screening device for anti-breakage materials, characterized in that, The device includes a screen cylinder (10), a rotating lever (20), and a housing (30). The rotating lever (20) rotates inside the screen cylinder (10). The screen cylinder (10) is located inside the housing (30). The screen cylinder has a screen cylinder inclination angle (α). Multiple rotating levers (20) are mounted on a rotating lever shaft (21). The multiple rotating levers (20) are spirally and equally distributed around the rotating lever shaft (21). The end of the rotating lever is provided with a lever head (22). The lever head (22) rotates close to the screen cylinder.

2. The anti-breakage material screening device according to claim 1, characterized in that, The inclination angle (α) of the sieve cylinder is the angle between the axis of the sieve cylinder and the ground plane, and the inclination angle (α) of the sieve cylinder is 5°~16°.

3. The anti-breakage material screening device according to claim 1, characterized in that, The screen cylinder is provided with a screen cylinder rotating shaft (11) and a screen cylinder adjusting shaft (12). The screen cylinder adjusting shaft drives the screen cylinder to rotate around the screen cylinder rotating shaft to adjust the screen cylinder tilt angle (α).

4. The anti-breakage material screening device according to claim 3, characterized in that, The chassis is provided with a screen cylinder adjustment groove (31) and a screen cylinder support shaft (32). The screen cylinder adjustment shaft (12) moves in the screen cylinder adjustment groove (31). A screen cylinder pressing screw (33) is provided between the screen cylinder adjustment shaft (12) and the screen cylinder support shaft (32). A screen cylinder fastening nut (13) is provided on the screen cylinder adjustment shaft (12).

5. The anti-breakage material screening device according to claim 1, characterized in that, The feed end of the screen cylinder (10) is provided with a lever drive motor (23) and a feed port (14). The lever drive motor (23) drives the rotating lever (20) to rotate through a reduction gear pair (25). The lever drive motor (23) is located above the axis of the rotating lever (20), and the feed port (14) is located below the axis of the rotating lever (20). The machine box (30) is provided with a feed cylinder (34) connected to the feed port (14).

6. The anti-breakage material screening device according to claim 1, characterized in that, The discharge end of the screen cylinder (10) is provided with a discharge port (15), and the machine box (30) is provided with a discharge chute (35) corresponding to the discharge port (15).

7. The anti-breakage material screening device according to claim 1, characterized in that, The lower side of the chassis (30) is provided with an ash hopper (36), and the lower end of the ash hopper is provided with an ash outlet (37).

8. The anti-breakage material screening device according to claim 1, characterized in that, The chassis is provided with a dust removal port (38), which is connected to a dust collector (40).

9. The anti-breakage material screening device according to claim 8, characterized in that, The upper end of the chassis is provided with a chassis cover (39), and the chassis cover (39) is provided with the dust removal port (38).

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