A device for screening a seedling substrate

Abstract

The utility model relates to the technical field of matrix screening equipment, especially to a seedling matrix screening device, including base, mount, connecting support, feed inlet and screening mechanism, the mount is swinged with the fixed lug on the base through the connecting shaft of one side, and the other side of mount is connected with base through the propulsion mechanism, the upper portion of mount is provided with screening mechanism, the screening mechanism includes the support bracket, the auxiliary material guide support, the roll, the screening cylinder, the guide wheel and the pivot, the auxiliary material guide support sets up on the support bracket, and the inside of auxiliary material guide support is provided with a plurality of rolls, and the outer wall of roll and screening cylinder is provided with the joint, the upper portion of support bracket is provided with the guide wheel, and the outer wall of guide wheel and screening cylinder is provided with the joint, the guide wheel sets up on the pivot, and the pivot is connected with first drive motor through the transmission chain, the utility model discloses for solving the problem that the existing matrix screening equipment, the discharge outlet is easy to block in the discharging process.

Description

Technical Field

[0001] This utility model relates to the technical field of substrate screening equipment, and in particular to a seedling substrate screening device. Background Technology

[0002] In modern agricultural production systems, the quality of pretreatment of seedling substrate directly affects the growth and development of seedlings. To ensure that the substrate has good air permeability, water retention and uniform fertility to meet the needs of seedling root growth, it is necessary to finely screen the substrate before laying it on the planting bed so that the substrate particles meet the appropriate particle size standard. Currently, the industry commonly uses vibrating screening to process seedling substrate. This method uses high-frequency vibration to make the substrate jump on the screen, achieving separation of particles of different sizes. However, since seedling substrates are mostly composed of mixtures of materials such as peat moss, vermiculite, and perlite, irregularly shaped and hard lumps are easily generated during the mixing process. These lumps are easily squeezed and embedded at the screen outlet during vibrating screening, forming blockages. Once blockages occur, manual shutdown and cleaning are required, which not only interrupts the production process and significantly reduces screening efficiency but also increases labor costs and equipment wear and tear, seriously affecting the continuity and stability of production. To overcome the technical drawbacks of traditional vibrating screening, a seedling substrate screening device based on rotary screening was designed. The core component of this device is the screening drum. Through the continuous rotation of the drum, the substrate is continuously tumbled and moved inside the drum. Compared with the unidirectional jumping of traditional vibrating screening, the three-dimensional motion mode of rotary screening effectively reduces material accumulation and lumps, fundamentally reducing the risk of blockage. Utility Model Content

[0003] The purpose of this invention is to provide a seedling substrate screening device that solves the problem of easy blockage of the discharge port during the discharge process of existing substrate screening equipment.

[0004] The technical implementation scheme of this utility model is as follows: A seedling substrate screening device includes a base, a fixed frame, a connecting bracket, a feeding hopper, and a screening mechanism. The fixed frame is movably connected to a fixed lug on the base via a connecting shaft on one side, and the other side of the fixed frame is connected to the base via a pushing mechanism. The screening mechanism is provided on the upper part of the fixed frame. The screening mechanism includes a receiving bracket, an auxiliary guide support, rollers, a screening drum, guide wheels, and a rotating shaft. The auxiliary guide support is provided on the receiving bracket, and several rollers are provided inside the auxiliary guide support. The rollers are positioned at their contact points with the outer wall of the screening drum. The guide wheels are provided on the upper part of the receiving bracket, and the guide wheels are positioned at their contact points with the outer wall of the screening drum. The guide wheels are mounted on the rotating shaft, and the rotating shaft is connected to a first drive motor via a transmission chain.

[0005] Optionally, a first sprocket is provided on the upper part of the rotating shaft, and the first sprocket is connected to a second sprocket on the output shaft of the first drive motor via a transmission chain.

[0006] Optionally, the fixed frame is provided with a guide trough inside, and a first guide trough is provided at the lower part of the guide trough, and a first conveyor belt is provided inside the first guide trough.

[0007] Optionally, the screening drum is a cylindrical cavity structure with openings at both ends, and the upper part of the screening drum is provided with a plurality of screening holes; a receiving ring is provided on the outer wall of the screening drum, and the receiving ring is connected to the guide wheel.

[0008] Optionally, the propulsion mechanism includes a first propulsion rod, a second propulsion rod, a screw, and a rotating handle. The first propulsion rod is disposed in a guide groove on the inner wall of the base, and the upper part of the first propulsion rod is movably connected to the second connecting support at the bottom of the fixed frame through a first connecting support and a second propulsion rod. The second propulsion rod is connected to the screw through an internal screw hole, and a rotating handle is provided at one end of the screw.

[0009] Optionally, the upper part of the fixed frame is provided with a connecting bracket, and the connecting bracket is provided with a carrying plate, and a feeding hopper is provided in the connecting hole of the carrying plate; the discharge port at the bottom of the feeding hopper is provided with a feeding pipe, and the feeding pipe extends into the interior of the screening drum chamber.

[0010] Optionally, a second guide chute is provided at the discharge port of the screening drum, and a second conveyor belt is provided inside the second guide chute.

[0011] This utility model has the following advantages: 1. In this utility model, a screening mechanism is provided on the upper part of the fixed frame, which can screen the matrix entering from the feed hopper. The entire screening drum is set on the auxiliary guide support and guide wheel. The guide wheel can be driven by the rotating shaft, thereby rotating the entire screening drum to achieve rolling screening of the internal matrix. Qualified matrix can be discharged through the feed chute and transported through the first guide chute, while agglomerated and unqualified materials can be transported through the second guide chute.

[0012] 2. In this utility model, the fixed frame is movably connected to the fixed ear on the base through the connecting shaft at one end. The entire fixed frame can be lifted by the pushing mechanism, thereby realizing the angle adjustment of the entire screening mechanism. This facilitates the screening and discharge of the substrate during the rolling of the screening drum, and the agglomerated substrate is discharged from one end, which is convenient for screening. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2This is the front view of the present invention.

[0015] Figure 3 This is a schematic diagram of the structure of the screening drum part of this utility model.

[0016] Figure 4 This is a schematic diagram of the propulsion mechanism of this utility model.

[0017] Figure 5 This is a schematic diagram of the screening mechanism of this utility model.

[0018] The meanings of the reference numerals in the figure are as follows: 1-base, 2-fixed frame, 3-screening mechanism, 301-receiving bracket, 302-guide wheel, 303-auxiliary material guide support, 304-screening roller, 305-receiving ring, 306-rotating shaft, 307-first drive motor, 308-idler roller, 309-second sprocket, 310-transmission chain, 311-material chute, 4-connecting bracket, 5-carrying plate, 6-feeding hopper, 8-propulsion mechanism, 801-first push rod, 802-screw, 803-rotating handle, 804-second push rod, 9-fixed ear, 10-first material guide chute, 11-second material guide chute. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the following will describe this utility model in further detail with reference to the accompanying drawings. It is hereby declared that the terms "up," "down," "left," "right," "front," "back," "inner," and "outer," etc., appearing or about to appear in this document, are based solely on the accompanying drawings and are not intended to specifically limit this utility model.

[0020] like Figures 1-5 As shown, a seedling substrate screening device includes a base 1, a fixed frame 2, a connecting bracket 4, a feeding hopper 6, and a screening mechanism 3. The fixed frame 2 is movably connected to a fixed lug 9 on the base 1 via a connecting shaft on one side, and the other side of the fixed frame 2 is connected to the base 1 via a pushing mechanism 8. The screening mechanism 3 is provided on the upper part of the fixed frame 2. The screening mechanism 3 includes a receiving bracket 301, an auxiliary guide support 303, a roller 308, a screening drum 304, a guide wheel 302, and a screening component. A rotating shaft 306 and an auxiliary guide support 303 are mounted on a receiving bracket 301. The auxiliary guide support 303 is equipped with several idlers 308, which are positioned at the contact points with the outer walls of the screening drum 304. A guide wheel 302 is mounted on the upper part of the receiving bracket 301, and the guide wheel 302 is positioned at the contact points with the outer walls of the screening drum 304. The guide wheel 302 is mounted on the rotating shaft 306, and the rotating shaft 306 is connected to the first drive motor 307 via a transmission chain 310.

[0021] It should be noted that the fixed frame 2 is movably connected to the fixed ear 9 on the base 1 via a connecting shaft at one end, and can be pushed forward under the drive of the pushing mechanism 8, thereby tilting the fixed frame 2 to facilitate the screening mechanism 3 to perform drum screening and guiding of the substrate. The screening drum 304 is set on the roller 308 of the auxiliary guiding support 303, and the receiving bracket 301 is also equipped with a guide wheel 302, which rotates based on the rotating shaft 306, thereby driving the screening drum 304. Under the rotation of the screening drum 304, the substrate is screened. The qualified substrate enters the first guiding trough 10 from the material passage 311, and the agglomerated substrate can be discharged through one end of the screening drum 304 and guided from the second guiding trough 11.

[0022] like Figures 1-4 As shown, a first sprocket is provided on the upper part of the rotating shaft 306, and the first sprocket is connected to a second sprocket 309 on the output shaft of the first drive motor 307 via a transmission chain 310; a material passage trough 311 is provided inside the fixed frame 2, and a first guide trough 10 is provided at the lower part of the material passage trough 311, and a first conveyor belt is provided inside the first guide trough 10.

[0023] It should be noted that a first sprocket is provided at one end of the rotating shaft 306, and the first sprocket is connected to the second sprocket 309 on the output shaft of the first drive motor 307 through the transmission chain 310. Under the drive of the first drive motor 307, the sprocket rotates, thereby rotating the screening drum 304.

[0024] like Figures 1-5 As shown, the screening drum 304 is a cylindrical cavity structure with openings at both ends, and the upper part of the screening drum 304 is provided with a plurality of screening holes; a receiving ring 305 is provided on the outer wall of the screening drum 304, and the receiving ring 305 is connected to the guide wheel 302.

[0025] It should be noted that the screening drum 304 is provided with screening holes on the upper part, which can screen out qualified substrates during rotation. In addition, the outer wall of the screening drum 304 is provided with a receiving ring 305, which is connected to the guide wheel 302 to prevent the screening drum 304 from sliding during rotation.

[0026] like Figures 1-5As shown, the propulsion mechanism 8 includes a first propulsion rod 801, a second propulsion rod 804, a screw 802, and a rotating handle 803. The first propulsion rod 801 is disposed in a guide groove on the inner wall of the base 1, and the upper part of the first propulsion rod 801 is movably connected to the second connecting support at the bottom of the fixed frame 2 through a first connecting support and the second propulsion rod 804. The second propulsion rod 804 is connected to the screw 802 through an internal screw hole, and a rotating handle 803 is provided at one end of the screw 802. A connecting bracket 4 is provided on the upper part of the fixed frame 2, and a carrying plate 5 is provided on the connecting bracket 4. A feeding hopper 6 is provided in the connecting hole of the carrying plate 5. A feeding pipe is provided at the discharge port at the bottom of the feeding hopper 6, and the feeding pipe extends into the cavity of the screening drum 304.

[0027] It should be noted that the first push rod 801 is set in the guide groove on the inner wall of the base 1, and the screw hole in the middle of the first push rod 801 is connected to the screw 802, which can achieve lateral movement under the drive of the rotating handle 803, and then lift the entire fixed frame 2 through the second push rod 804, thereby adjusting the angle of the fixed frame 2 and realizing micro-angle adjustment.

[0028] like Figures 1-5 As shown, a second guide chute 11 is provided at the discharge port of the screening drum 304, and a second conveyor belt is provided inside the second guide chute 11.

[0029] It should be noted that the second guide chute 11 is designed to receive the material discharged from one end of the screening drum 304, which facilitates the transportation of agglomerated materials.

[0030] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A seedling substrate screening device, comprising a base (1), a fixing frame (2), a connecting bracket (4), a feeding hopper (6), and a screening mechanism (3), characterized in that, The fixed frame (2) is movably connected to the fixed ear (9) on the base (1) via a connecting shaft on one side, and the other side of the fixed frame (2) is connected to the base (1) via a push mechanism (8); The upper part of the fixed frame (2) is provided with a screening mechanism (3). The screening mechanism (3) includes a support bracket (301), an auxiliary guide support (303), a roller (308), a screening drum (304), a guide wheel (302), and a rotating shaft (306). The auxiliary guide support (303) is set on the support bracket (301), and a number of rollers (308) are provided inside the auxiliary guide support (303). The rollers (308) are connected to the outer wall of the screening drum (304). A guide wheel (302) is provided on the upper part of the support bracket (301), and the guide wheel (302) is provided at the junction with the outer wall of the screening drum (304); the guide wheel (302) is provided on the rotating shaft (306), and the rotating shaft (306) is connected to the first drive motor (307) through the transmission chain (310).

2. The seedling substrate screening device according to claim 1, characterized in that, The upper part of the rotating shaft (306) is provided with a first sprocket, and the first sprocket is connected to the second sprocket (309) on the output shaft of the first drive motor (307) through a transmission chain (310).

3. A seedling substrate screening device according to claim 2, characterized in that, The fixed frame (2) is provided with a material trough (311) inside, and a first guide trough (10) is provided at the lower part of the material trough (311). A first conveyor belt is provided inside the first guide trough (10).

4. A seedling substrate screening device according to claim 1, characterized in that, The screening drum (304) is a cylindrical cavity structure with openings at both ends, and the upper part of the screening drum (304) is provided with several screening holes. A receiving ring (305) is provided on the outer wall of the screening drum (304), and the receiving ring (305) is connected to the guide wheel (302).

5. A seedling substrate screening device according to claim 1, characterized in that, The propulsion mechanism (8) includes a first propulsion rod (801), a second propulsion rod (804), a screw (802) and a rotating handle (803). The first propulsion rod (801) is set in the guide groove on the inner wall of the base (1), and the upper part of the first propulsion rod (801) is movably connected to the second connecting support at the bottom of the fixed frame (2) through the first connecting support and the second propulsion rod (804). The second push rod (804) is connected to the screw (802) through an internal screw hole, and one end of the screw (802) is provided with a rotating handle (803).

6. A seedling substrate screening device according to claim 5, characterized in that, The upper part of the fixed frame (2) is provided with a connecting bracket (4), and a carrying plate (5) is provided on the connecting bracket (4). A feeding hopper (6) is provided in the connecting hole of the carrying plate (5). The bottom of the feed hopper (6) is provided with a feed pipe at the discharge port, and the feed pipe extends into the cavity of the screening drum (304).

7. A seedling substrate screening device according to claim 1, characterized in that, The screening drum (304) is provided with a second guide chute (11) at the discharge port, and a second conveyor belt is provided inside the second guide chute (11).

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