Suspended grain screening equipment

Abstract

The utility model discloses a suspension type grain screening device which comprises a support. The screening shell is connected to the support through a hanging assembly; the driving assembly and the screening shell are eccentrically arranged so as to drive the screening shell to do circular motion; the driving assembly comprises a main transmission shaft, a driven transmission shaft eccentrically connected with the main transmission shaft and a balancing weight, the driven transmission shaft is connected with the screening shell, the end of the driven transmission shaft forms the driving end, and the balancing weight is connected with the main transmission shaft or the driven transmission shaft through an adjusting structure so as to adjust the distance between the balancing weight and the driven transmission shaft. The adjusting structure comprises a first long hole formed in the connecting plate and a second long hole formed in the balancing weight, and the balancing weight penetrates through the second long hole and the first long hole through a fastener so as to adjust the distance between the balancing weight and the driven transmission shaft. Compared with the prior art, the power system has the advantages that the structure is simple, and the balance of the whole power system can be guaranteed through eccentric transmission of the driving assembly and the balancing weight.

Description

Technical Field

[0001] This utility model belongs to the field of grain screening technology, specifically relating to a suspended grain screening device. Background Technology

[0002] A rotary screen is a high-precision screening machine for fine materials. However, most existing screening equipment is powered by traditional spring vibration, and some are driven by crankshaft. If the grain being screened is large, the eccentric motion is prone to imbalance, resulting in violent shaking or even overturning. Therefore, it is very important to obtain a suspended grain screening device that overcomes the above defects. Utility Model Content

[0003] To solve at least one of the above-mentioned technical problems, this utility model provides a suspended grain screening device, comprising:

[0004] support;

[0005] The screening shell is connected to the support via a suspension assembly. The screening shell contains multiple layers of screen plates, and each layer of screen plate has a discharge port at the bottom of the screening shell. For example, a guide is installed on the support, which is connected to the discharge port, and the top of the screening shell is the inlet.

[0006] A drive assembly is configured with a drive end, which is eccentrically positioned relative to the screening shell to drive the screening shell to perform circular motion.

[0007] The drive assembly includes a main drive shaft, a driven shaft eccentrically connected to the main drive shaft, and a counterweight. The driven shaft is connected to the screening housing, and the end of the driven shaft forms the drive end. The counterweight is connected to the main drive shaft or the driven shaft through an adjustment structure to adjust the distance between the counterweight and the driven shaft.

[0008] It also includes a connecting plate, wherein the main drive shaft and the driven drive shaft are fixed on both sides of the connecting plate and are staggered to form an eccentric structure. The adjustment structure includes a first elongated hole on the connecting plate and a second elongated hole on the counterweight. The counterweight is adjusted by fasteners passing through the second elongated hole and the first elongated hole to adjust the distance between the counterweight and the driven drive shaft.

[0009] Through the above technical solution, since the distance between the counterweight and the drive shaft can be adjusted, the appropriate distance can be adjusted according to the weight of the grain being screened, ensuring uniform centrifugal force during rotation, avoiding premature wear of the bearings, and achieving a balanced power system.

[0010] The screening housing has a rotating groove, and the driven shaft is at least partially disposed within the rotating groove and rotates within the rotating groove. A first rotating bearing connects the driven shaft and the rotating groove.

[0011] The drive assembly includes a drive unit, the output shaft of which is fixedly connected to a transmission wheel. A pulley is fixedly mounted on the main drive shaft, and the transmission wheel and the pulley are driven by a belt. The main drive shaft is connected to the bracket via a second rotary bearing.

[0012] The driving device is a drive motor fixed on the bracket.

[0013] The suspension assembly includes a first rotating shaft fixedly connected to the bracket, a second rotating shaft fixedly connected to the screening shell, and a third rotating shaft. The first rotating shaft and the third rotating shaft are connected to each other, and the third rotating shaft and the second rotating shaft are connected by universal joints.

[0014] Through the above technical solution, the suspension assembly can ensure that the screening shell can achieve circular motion.

[0015] Compared with the prior art, the advantages of this utility model are: the utility model has a simple structure, and the balance of the overall power system can be ensured by the eccentric transmission of the drive component and the counterweight. Attached Figure Description

[0016] Figure 1 This is a perspective view of the present utility model;

[0017] Figure 2 This is a partial cross-sectional perspective view of the present invention;

[0018] Figure 3 This is a cross-sectional side view of the present invention;

[0019] Figure 4 This is a perspective view of the drive component of this utility model;

[0020] Figure label:

[0021] 1 bracket;

[0022] 2. Screening shell; 201. Discharge port; 202. Guide component; 203. Inlet; 204. Rotary trough;

[0023] 3. Drive assembly; 301. Drive end; 302. Main drive shaft; 303. Driven shaft; 304. Counterweight; 305. Connecting plate; 306. First elongated hole; 307. Second elongated hole; 308. First rotary bearing; 309. Second rotary bearing; 310. Drive device; 311. Transmission wheel; 312. Pulley; 313. Belt;

[0024] 4. Suspension assembly; 401 First rotating shaft; 402 Second rotating shaft; 403 Third rotating shaft; 404 Universal joint. Detailed Implementation

[0025] To enable those skilled in the art to better understand this utility model and to more clearly define the scope of protection claimed by this utility model, the present utility model is described in detail below with reference to certain specific embodiments. It should be noted that the following are only some specific embodiments of the present utility model concept, and are only a part of the embodiments of this utility model. The specific and direct description of related structures is only for the convenience of understanding this utility model, and the specific features do not necessarily or directly limit the scope of implementation of this utility model.

[0026] Referring to the accompanying drawings, this utility model adopts the following technical solution: this utility model provides a suspended grain screening device, comprising:

[0027] Bracket 1;

[0028] The screening shell 2 is connected to the support 1 by the suspension assembly 4. The screening shell 2 has multiple layers of screen plates inside, and each layer of screen plate has a discharge port 201 at the bottom of the screening shell 2. For example, a guide 202 is installed on the support 1, and the guide 202 is connected to the discharge port 201. The top of the screening shell 2 is the inlet 203.

[0029] Drive component 3 is configured with drive end 301, which is eccentrically set with the screening shell 2 to drive the screening shell 2 to perform circumferential motion;

[0030] The drive assembly 3 includes a main drive shaft 302, a driven shaft 303 eccentrically connected to the main drive shaft 302, and a counterweight 304. The driven shaft 303 is connected to the screening housing 2, and the end of the driven shaft 303 forms the drive end 301. The counterweight 304 is connected to the main drive shaft 302 or the driven shaft 303 through an adjustment structure to adjust the distance between the counterweight 304 and the driven shaft 303.

[0031] The system also includes a connecting plate 305. The main drive shaft 302 and the driven drive shaft 303 are fixed to both sides of the connecting plate 305 and are staggered to form an eccentric structure. The adjustment structure includes a first elongated hole 306 on the connecting plate 305 and a second elongated hole 307 on the counterweight 304. The counterweight 304 is adjusted by fasteners passing through the second elongated hole 307 and the first elongated hole 306. In other embodiments, the adjustment structure may, for example, have several first mounting holes on the connecting plate 305 and second mounting holes on the counterweight 304. The distance between the second mounting holes is adjusted by fasteners inserted into different first mounting holes.

[0032] Through the above technical solution, since the counterweight 304 can adjust the distance between itself and the drive shaft 303, the appropriate distance can be adjusted according to the weight of the grain being screened, ensuring uniform centrifugal force during rotation, avoiding premature wear of the bearings, and achieving balance of the power system.

[0033] The screening housing 2 has a rotating groove 204, and the driven shaft 303 is at least partially disposed within the rotating groove 204 and rotates within the rotating groove 204. A first rotating bearing 308 connects the driven shaft 303 and the rotating groove 204.

[0034] The drive assembly 3 includes a drive device 310, the output shaft of which is fixedly connected to a transmission wheel 311. A main drive shaft 302 is fixed with a pulley 312, and the transmission wheel 311 and the pulley 312 are driven by a belt 313. The main drive shaft 302 is connected to the bracket 1 by a second rotary bearing 309.

[0035] The driving device 310 is a drive motor fixed on the bracket 1.

[0036] The suspension assembly 4 includes a first rotating shaft 401 fixedly connected to the bracket 1, a second rotating shaft 402 fixedly connected to the screening shell 2, and a third rotating shaft 403. The first rotating shaft 401 and the third rotating shaft 403, and the third rotating shaft 403 and the second rotating shaft 402 are connected by a universal joint 404.

[0037] Through the above technical solution, the suspension assembly 4 can ensure that the screening shell 2 achieves circular motion. In other embodiments, the suspension assembly 4 can also be an iron chain, but its stability is not as good as that of the universal joint 404.

[0038] Compared with the prior art, the advantages of this utility model are: the utility model has a simple structure, and the balance of the overall power system can be ensured by the eccentric transmission of the drive component 3 and the counterweight 304.

[0039] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A suspended grain screening device, characterized in that: include: Frame (1); The screening shell (2) is connected to the support (1) via a suspension assembly (4); The drive assembly (3) is equipped with a drive end (301), which is eccentrically positioned with respect to the screening shell (2) to drive the screening shell (2) to perform circular motion; The drive assembly (3) includes a main drive shaft (302), a driven shaft (303) eccentrically connected to the main drive shaft (302), and a counterweight (304). The driven shaft (303) is connected to the screening housing (2), and the end of the driven shaft (303) forms the drive end (301). The counterweight (304) is connected to the main drive shaft (302) or the driven shaft (303) through an adjustment structure to adjust the distance between the counterweight (304) and the driven shaft (303).

2. The suspended grain screening device according to claim 1, characterized in that: The screening shell (2) is provided with a rotating groove (204), and the drive shaft (303) is at least partially disposed in the rotating groove (204) and rotates in the rotating groove (204).

3. The suspended grain screening device according to claim 2, characterized in that: A first rotary bearing (308) is connected between the drive shaft (303) and the rotary groove (204).

4. The suspended grain screening device according to claim 1, characterized in that: It also includes a connecting plate (305), the main drive shaft (302) and the driven shaft (303) are fixed on both sides of the connecting plate (305) and staggered to form an eccentric structure. The adjustment structure includes a first elongated hole (306) opened on the connecting plate (305) and a second elongated hole (307) opened on the counterweight (304). The counterweight (304) is fastened through the second elongated hole (307) and the first elongated hole (306) to adjust the distance between the counterweight (304) and the driven shaft (303).

5. The suspended grain screening device according to claim 1, characterized in that: The drive assembly (3) includes a drive device (310), the output shaft of the drive device (310) is fixedly connected to a transmission wheel (311), the main drive shaft (302) is fixed with a pulley (312), and the transmission wheel (311) and the pulley (312) are driven by a belt (313).

6. The suspended grain screening device according to claim 1, characterized in that: The main drive shaft (302) is connected to the bracket (1) via a second rotary bearing (309).

7. The suspended grain screening device according to claim 5, characterized in that: The drive device (310) is a drive motor fixed on the bracket (1).

8. The suspended grain screening device according to claim 1, characterized in that: The suspension assembly (4) includes a first rotating shaft (401) connected to the bracket (1), a second rotating shaft (402) connected to the screening shell (2), and a third rotating shaft (403). The first rotating shaft (401) and the third rotating shaft (403) are connected to each other, and the third rotating shaft (403) and the second rotating shaft (402) are connected by universal joints (404).

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