A drum screening machine for bio-organic fertilizer preparation

Abstract

This utility model relates to the field of screening technology and discloses a drum screener for preparing bio-organic fertilizer. The drum screener includes a main body with a frame and a screen cylinder. An extension frame is fixedly installed on the upper side of the frame, and an electric screw module is fixedly installed on the extension frame. An arc-shaped cover is fixedly installed on the lower side of the slide of the electric screw module via a connecting seat. An air jet assembly is installed inside the arc-shaped cover. A hot air blower is fixedly installed on the upper side of the slide of the electric screw module, and the hot air blower is connected to the air jet assembly via a bent pipe. A pair of guide wheels are rotatably mounted on the arc-shaped cover via a vibration assembly. The guide wheels are located inside the lower part of the arc-shaped cover, and the lower sides of the guide wheels abut against the outer circumference of the screen cylinder. This utility model, through a composite unblocking mechanism of airflow stripping and mechanical vibration, can significantly improve the unblocking effect and ensure screening efficiency, and is suitable for organic fertilizer production conditions with different viscosity and humidity.

Description

Technical Field

[0001] This utility model relates to the field of screening technology, specifically a drum screening machine for preparing bio-organic fertilizer. Background Technology

[0002] In the process of preparing bio-organic fertilizer, drum screeners can be used in the raw material pretreatment stage to separate impurities; in the post-fermentation treatment stage to screen and remove materials with unqualified particle sizes; and in the packaging stage to screen materials with qualified particle sizes.

[0003] Currently used drum screens can achieve grading and screening. In order to prevent particles from clogging the screen holes and gradually reducing the screening capacity of the screen cylinder, existing technologies also install an air jet assembly (mainly composed of a blower, a conveying pipe and nozzles) above the screen cylinder. The conveying pipe is the same length as the screen cylinder, and the nozzles are evenly distributed along the axial direction of the screen cylinder.

[0004] In practical applications, the following shortcomings exist: 1) To meet the air output pressure requirements of multiple nozzles, a high-power blower is required, resulting in high manufacturing costs; 2) One nozzle corresponds to one circumference of the screen cylinder. The pressure is greater when it is directly below the nozzle and less when it is further away from the nozzle. This results in uneven flushing pressure for clogging materials and poor backflushing and peeling effect. 3) For different materials at different stages, the viscosity and moisture content of the materials are different. The peeling effect is not ideal by simply using backflushing.

[0005] Therefore, in order to solve the above problems, a drum screening machine for the preparation of bio-organic fertilizer is proposed. Utility Model Content

[0006] The purpose of this invention is to provide a drum screening machine for preparing bio-organic fertilizer, which can comprehensively and efficiently clear blockages, thereby solving the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: A rotary drum screen for preparing bio-organic fertilizer includes a screen body with a frame and a screen cylinder. An extension frame is fixedly installed on the upper side of the frame, and an electric screw module is fixedly installed on the extension frame. The electric screw module is parallel to the axis of the screen cylinder. An arc-shaped cover is fixedly installed on the lower side of the slide of the electric screw module through a connecting seat. The arc-shaped cover is located directly above the screen cylinder. An air jet assembly is installed inside the arc-shaped cover. A hot air blower is fixedly installed on the upper side of the slide of the electric screw module. The hot air blower is connected to the air jet assembly through a bent pipe. A pair of guide wheels are rotatably mounted on the arc-shaped cover through a vibration assembly. The guide wheels are located inside the lower part of the arc-shaped cover, and the lower sides of the guide wheels abut against the outer circumference of the screen cylinder.

[0008] Specifically, the jet assembly includes a nozzle and an arc-shaped tube. The arc-shaped tube is fixedly installed on the top inner side of the arc-shaped cover. The lower end of the curved tube passes through the arc-shaped cover and is connected to the arc-shaped tube. The nozzle is uniformly installed on the lower side of the arc-shaped tube.

[0009] Specifically, the vibration assembly includes a guide wheel seat, a spring, an arc-shaped plate, and a vibrator. The arc-shaped cover has a pair of through slots, and a guide wheel seat is inserted into each of the through slots. The same arc-shaped plate is fixedly installed on the upper side of the guide wheel seat. Guide wheels are rotatably installed on each guide wheel seat. Springs are evenly fixedly installed between the lower side of the arc-shaped plate and the arc-shaped cover. A vibrator is fixedly installed on the upper side of the arc-shaped plate.

[0010] Specifically, the guide wheel includes a wheel body and a drum-shaped roller. The wheel body is rotatably assembled with the guide wheel seat, and the drum-shaped roller is uniformly mounted on the circumferential side of the wheel body via a roller frame.

[0011] Furthermore, the included angle between the axis of the drum-shaped roller and the axis of the wheel body is 45°.

[0012] Specifically, an air filter cartridge is screwed onto the input end of the hot air blower.

[0013] Compared with the prior art, the beneficial effects of this utility model are: The hot air blower works in conjunction with the jet assembly, and as the screen cylinder rotates, it can perform multiple back-blowing operations along a circumference of the screen cylinder through multiple nozzles to ensure output pressure. A small-power hot air blower can meet the air output pressure requirements, resulting in low manufacturing costs. At the same time, the air output temperature can be adapted and adjusted according to the material properties. Then, with the translational drive of the electric screw module, the purpose of comprehensive back-blowing can be achieved.

[0014] The vibration component works in conjunction with the guide wheel, and as the screen cylinder rotates, it causes the screen cylinder to vibrate. Then, driven by the translation of the electric screw module, it can remove the blocked material particles through vibration.

[0015] It forms a composite unblocking mechanism of airflow stripping and mechanical vibration, which significantly improves the unblocking effect, ensures screening efficiency, and is suitable for organic fertilizer production conditions with different viscosity and humidity. Attached Figure Description

[0016] Figure 1 This is a schematic front view of the structure of this utility model; Figure 2 This is an enlarged schematic diagram of the structure of the arc-shaped cover of this utility model; Figure 3 for Figure 2 A schematic cross-sectional view of the structure at the arc-shaped cover in the middle AA direction; Figure 4 This is a schematic diagram of the structure of the guide wheel of this utility model.

[0017] In the diagram: 1 Electric lead screw module, 2 Hot air blower, 3 Extension frame, 4 Guide wheel, 41 Wheel body, 42 Drum roller, 5 Arc cover, 6 Vibration assembly, 61 Guide wheel seat, 62 Spring, 63 Arc plate, 64 Vibrator, 7 Connecting seat, 8 Jet assembly, 81 Nozzle, 82 Arc tube, 9 Frame, 10 Screen cylinder, 11 Air filter cylinder. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Example content: Please see Figure 1 , Figure 2 This invention provides a rotary drum screen for preparing bio-organic fertilizer, including a screen body. The rotary drum screen is an existing device consisting of a frame 9, a screen cylinder 10, a reducer unit (composed of a reducer motor and a belt conveyor structure), a feed hopper, and a discharge hopper. The frame 9 mainly serves a supporting function. During operation, the reducer unit rotates and tilts the screen cylinder 10. The material enters the screen cylinder 10 from the feed hopper and is discharged from multiple screen sections with different apertures to the corresponding discharge hopper.

[0020] An extension frame 3 is fixedly installed on the upper side of the frame 9. An electric screw module 1 is fixedly installed on the extension frame 3. The electric screw module 1 is arranged parallel to the axis of the screen cylinder 10. An arc-shaped cover 5 is fixedly installed on the lower side of the slide of the electric screw module 1 through the connecting seat 7. The arc-shaped cover 5 is located directly above the screen cylinder 10.

[0021] The extension frame 3 provides a support base for the installation of the electric screw module 1. When the electric screw module 1 is working, it can reciprocate to drive the arc cover 5 to move along the axial direction of the screen cylinder 10, so as to fully cover the screening area.

[0022] The arc-shaped cover 5 is equipped with an air jet assembly 8. A hot air blower 2 is fixedly installed on the upper side of the slide of the electric screw module 1. The hot air blower 2 is connected to the air jet assembly 8 through a bend. The hot air generated by the hot air blower 2 can be input into the air jet assembly 8 and evenly discharged to the top of the screen cylinder 10 to back-blow and peel off the blocked material particles. It has a better peeling effect on sticky materials and reduces the adhesion between sticky materials and the screen.

[0023] The arc-shaped cover 5 is rotatably mounted with a pair of guide wheels 4 via the vibration assembly 6. The guide wheels 4 are located inside the lower part of the arc-shaped cover 5, and the lower sides of the guide wheels 4 abut against the outer circumference of the screen cylinder 10. When the vibration assembly 6 is working, it can generate vibration, which is transmitted to the screen cylinder 10 through the guide wheels 4. As the screen cylinder 10 rotates and the electric screw module 1 translates, the guide wheels 4 can fully contact the screen cylinder 10 to vibrate and peel off the blocked material particles. The guide wheels 4 roll in contact with the screen cylinder 10, which reduces frictional resistance and ensures efficient transmission of vibration energy.

[0024] Among them, the hot air blower 2 is an existing device with a structure including a blower, heating wire, thermocouple and microcomputer, used to provide hot air at a stable temperature, and the temperature is adjustable.

[0025] The electric lead screw module 1 is an existing device with a structure including a servo motor, guide rod, lead screw, lead screw nut, housing and slide, used to provide power for reciprocating movement.

[0026] Please see Figure 3 The structure of jet assembly 8: The jet assembly 8 includes a nozzle 81 and an arc-shaped tube 82. The arc-shaped tube 82 is fixedly installed on the top inner side of the arc-shaped cover 5. The lower end of the curved tube passes through the arc-shaped cover 5 and is connected to the arc-shaped tube 82. The nozzle 81 is uniformly installed on the lower side of the arc-shaped tube 82.

[0027] The arc-shaped tube 82 is made of stainless steel, and its curvature matches the circumference of the screen cylinder 10 to ensure that the distance between the nozzle 81 and the screen cylinder 10 is equal. The output end of the nozzle 81 faces the axis of the screen cylinder 10, and the direction of blowing the material perpendicularly is conducive to the peeling of the material.

[0028] Meanwhile, multiple nozzles 81 distributed around the screen cylinder 10 can repeatedly flush the clogging material as it rotates, resulting in a better peeling effect.

[0029] Structure of vibration component 6: The vibration assembly 6 includes a guide wheel seat 61, a spring 62, an arc plate 63, and a vibrator 64. The arc cover 5 has a pair of through slots, and the guide wheel seat 61 is inserted into each of the through slots. The guide wheel seat 61 is vertically arranged, and the same arc plate 63 is fixedly installed on the upper side of the guide wheel seat 61. The guide wheel 4 is rotatably installed on the guide wheel seat 61. The spring 62 is evenly fixedly installed between the lower side of the arc plate 63 and the arc cover 5. The vibrator 64 is fixedly installed on the upper side of the arc plate 63.

[0030] The arc plate 63 is elastically mounted on the arc cover 5 by the spring 62. The spring 62 provides an upward restoring force to the arc plate 63. When the vibrator 64 is working, it can make the arc plate 63 vibrate, which drives the guide wheel seat 61 to move up and down along the through groove. Finally, the vibration is transmitted to the screen cylinder 10 through the guide wheel 4, so that the blockage material is loosened and falls off.

[0031] Among them, the vibrator 64 is an existing device consisting of a motor and an eccentric wheel, and the amplitude can be adjusted by adjusting the rotation speed.

[0032] Please see Figure 4 The structure of guide wheel 4: The guide wheel 4 includes a wheel body 41 and a drum-shaped roller 42. The wheel body 41 is rotatably assembled with the guide wheel seat 61. The drum-shaped roller 42 is uniformly mounted on the circumferential side of the wheel body 41 through the roller frame. The guide wheel seat 61 can transmit vibration to the wheel body 41 and the drum-shaped roller 42 without affecting the rotation of the wheel body 41 or the rotation of the drum-shaped roller 42.

[0033] The drum roller 42 is a drum shape with diameters at both ends smaller than the diameter in the middle. The angle between the axis of the drum roller 42 and the axis of the wheel body 41 is 45°, which is more conducive to neutralizing horizontal and circumferential forces. This makes it easier to convert the forces into rotational power of the drum roller 42 and the wheel body 41, and reduce the friction between the drum roller 42 and the screen cylinder 10.

[0034] To prevent the jet assembly 8 from being clogged by impurities: An air filter cartridge 11 is screwed onto the input end of the hot air blower 2. The air filter cartridge 11 is an existing component with a shell, end cap and pleated non-woven fabric filter element, used to intercept impurities such as dust and fibers to ensure that the air entering the hot air blower 2 is clean.

[0035] The working principle of this embodiment: The electric lead screw module 1, hot air blower 2, vibrator 64 and drum screen are electrically connected to the process section control computer via bus, and the control computer coordinates the control of each device based on preset process parameters.

[0036] During operation, the hot air blower 2 delivers adjustable temperature hot air to the jet assembly 8 through a bend in the pipe. The temperature is adjusted according to the properties of the material in the process. Multiple nozzles 81 arranged around the screen cylinder 10 form multiple back-blowing airflows. In conjunction with the electric screw module 1, the arc-shaped cover 5 is driven to move axially, achieving full coverage back-blowing of the screen surface and peeling off sticky materials.

[0037] The vibration component 6 contacts the outer wall of the screen cylinder 10 through the guide wheel 4, and the transmitted vibration causes the screen cylinder 10 to vibrate as well. In conjunction with the electric screw module 1, the arc-shaped cover 5 is driven to move axially, so as to achieve full coverage vibration of the screen surface. The material stripping effect is enhanced by two stripping methods, ensuring continuous and efficient operation of the screening process.

[0038] It will be apparent to those skilled in the art that this invention 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 essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0039] 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. A rotary drum screen for preparing bio-organic fertilizer, comprising a screen body having a frame (9) and a screen cylinder (10), characterized in that: An extension frame (3) is fixedly installed on the upper side of the frame (9), and an electric screw module (1) is fixedly installed on the extension frame (3). The electric screw module (1) is arranged parallel to the axis of the screen cylinder (10). An arc-shaped cover (5) is fixedly installed on the lower side of the slide of the electric screw module (1) through a connecting seat (7). The arc-shaped cover (5) is located directly above the screen cylinder (10). The arc-shaped cover (5) is equipped with an air jet assembly (8), and a hot air blower (2) is fixedly installed on the upper side of the slide of the electric screw module (1). The hot air blower (2) is connected to the air jet assembly (8) through a bent pipe. The arc-shaped cover (5) is rotatably mounted with a pair of guide wheels (4) via a vibration assembly (6). The guide wheels (4) are located inside the lower part of the arc-shaped cover (5), and the lower side of the guide wheels (4) abuts against the outer circumference of the screen cylinder (10).

2. The drum screening machine for preparing bio-organic fertilizer according to claim 1, characterized in that: The jet assembly (8) includes a nozzle (81) and an arc-shaped tube (82). The arc-shaped tube (82) is fixedly installed on the top inner side of the arc-shaped cover (5). The lower end of the curved tube passes through the arc-shaped cover (5) and is connected to the arc-shaped tube (82). The nozzle (81) is uniformly connected to the lower side of the arc-shaped tube (82).

3. The drum screening machine for preparing bio-organic fertilizer according to claim 2, characterized in that: The vibration assembly (6) includes a guide wheel seat (61), a spring (62), an arc plate (63), and a vibrator (64). The arc cover (5) has a pair of through slots, and the guide wheel seat (61) is inserted into each of the through slots. The same arc plate (63) is fixedly installed on the upper side of the guide wheel seat (61). The guide wheel seat (61) is rotatably mounted with a guide wheel (4). The spring (62) is evenly fixedly installed between the lower side of the arc plate (63) and the arc cover (5). The vibrator (64) is fixedly installed on the upper side of the arc plate (63).

4. The drum screen for preparing bio-organic fertilizer according to claim 3, characterized in that: The guide wheel (4) includes a wheel body (41) and a drum-shaped roller (42). The wheel body (41) is rotatably assembled with the guide wheel seat (61). The drum-shaped roller (42) is evenly mounted on the circumferential side of the wheel body (41) through a roller frame.

5. A drum screen for preparing bio-organic fertilizer according to claim 4, characterized in that: The angle between the axis of the drum roller (42) and the axis of the wheel body (41) is 45°.

6. The drum screen for preparing bio-organic fertilizer according to claim 1, characterized in that: An air filter cartridge (11) is screwed onto the input end of the hot air blower (2).

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