Double-layer vibrating screen transmission mechanism for a silk production line

Abstract

The present application relates to a kind of double-layer vibrating screen transmission mechanism of silk-making line, including eccentric transmission main shaft, bearing with seat, lower layer screen eccentric connecting rod shell, lower layer screen torque transmission piece, lower layer screen torque steering assembly, upper layer screen torque steering assembly, upper layer screen torque transmission piece, upper layer screen eccentric connecting rod shell.The technical solution is improved by the movement direction of upper and lower layer screen torque transmission piece, the appearance structure of torque steering assembly and the shaft diameter of eccentric transmission assembly main shaft, ensure that double-layer vibrating screen does not appear eccentric shaft wear, transmission pull piece fracture during operation, while the running noise of complete machine is reduced to minimum, and the equipment failure shutdown caused by transmission pull piece damage fracture and eccentric main shaft wear is greatly reduced, improve the stability of equipment operation, reduce the maintenance cost of equipment to minimum.

Description

Technical Field

[0001] This invention belongs to the technical field of double-layer vibrating screens, specifically relating to a transmission mechanism for a double-layer vibrating screen in a silk production line. Background Technology

[0002] The double-layer vibrating screen (hereinafter referred to as the double-layer vibrating screen) utilizes an eccentric transmission assembly and torque steering component to cause the upper and lower troughs to vibrate periodically, moving the material within the troughs and achieving continuous, high-flow-rate material conveying. Simultaneously, the screens at the bottom of the upper and lower troughs can be independently designed according to process requirements and material characteristics to separate fragments, ash, and tobacco dust of different sizes from the tobacco, thereby improving material purity.

[0003] like Figure 1 The diagram shown is a schematic of the current double-layer vibrating screen structure. Figure 2 The diagram shows the transmission mechanism of a double-layer vibrating screen, including a drive motor 01, an eccentric transmission mechanism 02, a triangular torque steering assembly 03, a transmission pull plate 04, a drive beam 05, a spring support seat 06, a spring 07, an upper screen 08, and a lower screen 09. The eccentric transmission mechanism 02 includes an eccentric transmission assembly 021, an upper screen torque transmission plate 010, an upper screen torque steering assembly 031, an upper screen transmission pull plate 041, an upper screen drive beam 051, a lower screen drive beam 052, a lower screen transmission pull plate 042, a seated bearing 012, a lower screen torque steering assembly 032, and a lower screen torque transmission plate 013.

[0004] Currently, the working principle of existing double-layer vibrating screens is as follows: an electric motor drives an eccentric shaft to rotate in a circular motion via a triangular belt, which in turn causes the connecting rod assembly on the eccentric drive shaft to reciprocate vertically up and down. The driving force is transmitted to the upper and lower screen bodies through a "triangular torque steering assembly," causing reciprocating vibration. The material then undergoes continuous, minute throwing or sliding within the trough along the conveying direction, thus moving the material forward and achieving the purpose of conveying. Simultaneously, the material is pre-screened using a pre-screening screen installed on the upper screen; the material that passes the pre-screening enters the lower screen for further screening.

[0005] The existing transmission mechanism has a high failure rate, mainly in the following two aspects: (1) During operation, the upper screen transmission pull plate 041 and the lower screen transmission pull plate 042 have large deflection, and the transmission pull plates are very easy to age and deform, or even break; (2) The main shaft of the eccentric transmission assembly is subjected to large force, and wear failure occurs frequently.

[0006] The main reasons for the above two failures are: (1) the included angle between the upper and lower layer screen torque transmission piece and the upper and lower layer screen transmission pull piece is large (the included angle is 60°), which causes the transmission pull piece to be deformed and even broken due to bearing too large deflection during operation; (2) the diameter of the eccentric transmission assembly main shaft is only φ40, which is difficult to bear the impact force during the operation of the double-layer vibrating screen, causing the main shaft to be frequently worn. SUMMARY

[0007] The purpose of the present application is to provide a double-layer vibrating screen transmission mechanism for a tobacco processing line, which solves the problems of the existing double-layer vibrating screen transmission pull piece being prone to aging deformation and even breaking, and the eccentric transmission assembly main shaft being subjected to large stress and frequently failing due to wear.

[0008] To achieve the above-mentioned purpose, the present application is realized by the following technical scheme:

[0009] A double-layer vibrating screen transmission mechanism for a tobacco processing line, comprising an eccentric transmission main shaft, a bearing with a seat, a lower layer screen eccentric connecting rod shell, a lower layer screen torque transmission piece, a lower layer screen torque steering assembly, an upper layer screen torque steering assembly, an upper layer screen torque transmission piece, and an upper layer screen eccentric connecting rod shell.

[0010] The eccentric transmission main shaft passes through the bearing with a seat, one end of the lower layer screen eccentric connecting rod shell is connected with the eccentric transmission main shaft, the other end is connected with the lower layer screen torque transmission piece, and the lower layer screen torque transmission piece is connected with the lower layer screen torque steering assembly.

[0011] One end of the upper layer screen eccentric connecting rod shell is connected with the eccentric transmission main shaft, the other end is connected with the upper layer screen torque transmission piece, and the upper layer screen torque transmission piece is connected with the upper layer screen torque steering assembly.

[0012] The lower layer screen torque transmission piece and the upper layer screen torque transmission piece are both horizontally rotated, and the lower layer screen torque steering assembly and the upper layer screen torque steering assembly are both V-shaped structures.

[0013] Further, the lower layer screen torque steering assembly is connected with the lower layer screen through a lower layer screen transmission pull piece, the upper layer screen torque steering assembly is connected with the upper layer screen through an upper layer screen transmission pull piece, the included angle between the lower layer screen torque transmission piece and the lower layer screen transmission pull piece, and the included angle between the upper layer screen torque transmission piece and the upper layer screen transmission pull piece are both 30 degrees.

[0014] Further, the eccentric transmission main shaft is connected with the driving motor through a triangular belt.

[0015] Further, the lower layer screen transmission pull piece is connected with the lower layer screen through a lower layer screen driving cross beam, and the upper layer screen transmission pull piece is connected with the upper layer screen through an upper layer screen driving cross beam.

[0016] Further, the lower layer screen and the upper layer screen are both provided with elastic sheet support seats and elastic sheets, and the elastic sheets are arranged on the elastic sheet support seats.

[0017] Further, the eccentric transmission main shaft is provided with a transmission eccentric sleeve, and the lower layer screen eccentric connecting rod shell and the upper layer screen eccentric connecting rod shell are connected with the eccentric transmission main shaft through the transmission eccentric sleeve.

[0018] Further, the shaft diameter of the eccentric transmission main shaft is 55 mm.

[0019] Compared with the existing double-layer vibrating screen, the beneficial effects of the present application are:

[0020] 1. The technical solution improves the movement direction of the upper and lower layer screen torque transmission sheets, the shape structure of the torque turning assembly, and the shaft diameter of the eccentric transmission assembly main shaft, ensures that the eccentric shaft wear and the transmission pull sheet fracture do not occur during the operation of the double-layer vibrating screen, minimizes the operation noise of the whole machine, greatly reduces the equipment failure downtime caused by the damage and fracture of the transmission pull sheet and the wear of the eccentric main shaft, improves the stability of the equipment operation, and reduces the maintenance cost of the equipment to the minimum.

[0021] 2. The device improves stability, reduces failure rate, is easy to maintain, and is easy to implement and maintain.

[0022] 3. The device can adjust the screen mesh size and the eccentric distance e of the eccentric transmission assembly according to the process requirements of different processes of the tobacco production line, to ensure normal conveying and effective screening of materials in each process of the tobacco production line on the double-layer vibrating screen.

[0023] 4. The improved double-layer vibrating screen of the device can reduce the design and installation size of the transmission structure while ensuring the conveying capacity, and can be installed at the original installation position.

[0024] 5. The device can screen and remove tobacco dust and ash in cut tobacco and stem tobacco, and sesame seeds and broken tobacco in tobacco leaves. At the same time, the double-layer vibrating screen with the structure has high stability, can greatly reduce the failure rate and maintenance cost of the equipment, can be popularized in the tobacco production line of different cigarette factories, and has high popularization and application value. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 The present double-layer vibrating screen structure schematic diagram is shown;

[0026] Figure 2 The present double-layer vibrating screen transmission mechanism schematic diagram is shown;

[0027] Figure 3 The double-layer vibrating screen structure schematic diagram of the present application is shown;

[0028] Figure 4The image shown is a front view of the double-layer vibrating screen transmission mechanism of the present invention.

[0029] Figure 5 This is a top view of the double-layer vibrating screen transmission mechanism of the present invention;

[0030] Figure 6 This is a schematic diagram of the design parameters for the double-layer vibrating screen of the present invention;

[0031] Figure 7 A double-layer vibrating screener using the double-layer vibrating screen transmission mechanism of this invention is used before the fragrance addition process in silk thread making.

[0032] Explanation of reference numerals in the attached figures

[0033] 01—Drive motor, 02—Eccentric transmission mechanism, 03—Triangular torque steering assembly, 04—Transmission pull plate, 05—Drive crossbeam, 06—Spring support seat, 07—Spring, 08—Upper screen, 09—Lower screen, 010—Upper screen torque transmission plate, 012—Bearing with seat, 013—Lower screen torque transmission plate, 021—Eccentric transmission assembly, 031—Upper screen torque steering assembly, 032—Lower screen torque steering assembly, 041—Upper screen transmission pull plate, 042—Lower screen transmission pull plate, 051—Upper screen drive crossbeam, 05 2—Lower screen drive beam, 1—Drive motor, 2—Eccentric transmission mechanism, 3—V-shaped torque steering assembly, 4—Transmission pull plate, 5—Drive beam, 6—Spring support seat, 7—Spring, 8—Upper screen, 9—Lower screen, 10—V-belt, 11—Eccentric transmission main shaft, 12—Bearing with seat, 13—Lower screen eccentric connecting rod housing, 14—Lower screen torque transmission plate, 15—Upper screen torque transmission plate, 16—Upper screen eccentric connecting rod housing, 17—Transmission eccentric sleeve, 31—Lower screen V-shaped torque steering assembly, 32—Upper screen V-shaped torque steering assembly. Detailed Implementation

[0034] The technical solutions of this application will be described in detail below with reference to the accompanying drawings. The following embodiments are merely exemplary and can only be used to explain and illustrate the technical solutions of this invention, and should not be construed as limiting the technical solutions of this invention.

[0035] The technical solution of this application is an improvement on the existing double-layer vibrating screen. This improvement does not involve the electrical control aspect. Therefore, the improved double-layer vibrating screen has no changes in the electrical control aspect.

[0036] like Figure 3 As shown, the double-layer vibrating screen structure of this application includes a drive motor 1, an eccentric transmission mechanism 2, a V-shaped torque steering component 3, a transmission pull plate 4, a drive crossbeam 5, a spring support seat 6, a spring 7, an upper screen 8, and a lower screen 9.

[0037] The driving motor is used for providing driving force for the double-layer vibrating screen.

[0038] As shown in Figure 4 and Figure 5 , the driving motor 1 is connected with the eccentric transmission mechanism 2 through the triangular belt 10, the eccentric transmission mechanism is respectively connected with the lower-layer screen V-shaped torque turning assembly 31 and the upper-layer screen V-shaped torque turning assembly 32, the lower-layer screen V-shaped torque turning assembly 31 is connected with the lower-layer screen transmission pull piece, the upper-layer screen V-shaped torque turning assembly is connected with the upper-layer screen transmission pull piece; one end of the lower-layer screen is provided with the lower-layer screen driving cross beam and is connected with the lower-layer screen transmission pull piece; one end of the upper-layer screen is provided with the upper-layer screen driving cross beam and is connected with the upper-layer screen transmission pull piece.

[0039] The elastic piece is arranged between the lower-layer screen and the lower-layer screen elastic piece support seat, and the elastic piece is arranged between the upper-layer screen and the upper-layer screen elastic piece support seat.

[0040] The technical scheme focuses on the improvement of the eccentric transmission mechanism, as shown in Figures 4 to 6 , specifically, the eccentric transmission mechanism 2 of the application includes an eccentric transmission main shaft 11, a bearing with seat 12, a lower-layer screen eccentric connecting rod shell 13, a lower-layer screen torque transmission piece 14, a lower-layer screen V-shaped torque turning assembly 31, an upper-layer screen V-shaped torque turning assembly 32, an upper-layer screen torque transmission piece 15, and an upper-layer screen eccentric connecting rod shell 16.

[0041] The eccentric transmission main shaft passes through the bearing with seat, the shaft diameter of the eccentric transmission main shaft of the application is 50 mm, and the corresponding transmission ball bearing and bearing with seat are improved to meet the overall design requirements. The transmission eccentric sleeve is arranged at the corresponding positions of the eccentric transmission main shaft and the upper-layer screen and the lower-layer screen, respectively. The lower-layer screen eccentric connecting rod shell is connected with the eccentric transmission main shaft through the transmission eccentric sleeve corresponding to the lower-layer screen, and the upper-layer screen eccentric connecting rod shell is connected with the eccentric transmission main shaft through the transmission eccentric sleeve 17 corresponding to the upper-layer screen.

[0042] The other end of the lower-layer screen eccentric connecting rod shell is connected with the lower-layer screen torque transmission piece, the lower-layer screen torque transmission piece is connected with the lower-layer screen torque turning assembly, the lower-layer screen torque turning assembly of the application is V-shaped; the other end of the upper-layer screen eccentric connecting rod shell is connected with the upper-layer screen torque transmission piece, the upper-layer screen torque transmission piece is connected with the upper-layer screen torque turning assembly, and the upper-layer screen torque turning assembly of the application is V-shaped. The original torque turning assembly is improved from a triangular shape to a V shape to meet the overall improvement requirements of the eccentric transmission mechanism.

[0043] The lower-layer screen torque transmission piece and the upper-layer screen torque transmission piece of the application are changed from original vertical operation to horizontal operation, and after the improvement of the technical scheme, the included angle between the lower-layer screen torque transmission piece and the lower-layer screen transmission pull piece and the included angle between the upper-layer screen torque transmission piece and the upper-layer screen transmission pull piece are both 30 degrees, as shown inFigure 6 The transmission pull piece is greatly reduced in deflection during operation, and equipment failure caused by aging and breakage of the transmission pull piece is minimized.

[0044] As shown in Figure 7 The double-layer vibrating screen separator using the double-layer vibrating screen transmission mechanism of the application before the tobacco processing line flavoring process.

[0045] The length L, width B, screen mesh size, number of spring pieces, motor speed N, eccentricity e of the eccentric transmission assembly, and the size of the torque transmission piece and the transmission pull piece of the technical solution can be designed and selected according to actual needs, and do not affect the implementation of the technical solution of the application.

[0046] The above is only an embodiment of the application, and well-known specific structures and properties in the scheme are not described in detail. It is obvious for those skilled in the art that the application is not limited to the details of the above exemplary embodiments, and the technical solution of the application can be implemented in other specific forms without departing from the spirit or basic characteristics of the application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the technical solution of the application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the application. Any reference signs in the specification should not be considered as limiting the claims involved.

Claims

1. A double-layer vibrating screen transmission mechanism for a tobacco primary processing line, comprising an eccentric transmission main shaft, a bearing with a seat, a lower screen eccentric connecting rod shell, a lower screen torque transmission piece, a lower screen torque steering assembly, an upper screen torque steering assembly, an upper screen torque transmission piece, and an upper screen eccentric connecting rod shell. The eccentric transmission main shaft passes through the bearing with a seat, one end of the lower screen eccentric connecting rod shell is connected with the eccentric transmission main shaft, and the other end is connected with the lower screen torque transmission piece, the lower screen torque transmission piece is connected with the lower screen torque steering assembly. One end of the upper screen eccentric connecting rod shell is connected with the eccentric transmission main shaft, and the other end is connected with the upper screen torque transmission piece, the upper screen torque transmission piece is connected with the upper screen torque steering assembly. The lower screen torque transmission piece and the upper screen torque transmission piece are horizontally rotated, and the lower screen torque steering assembly and the upper screen torque steering assembly are V-shaped structures. The lower screen torque steering assembly is connected with the lower screen through a lower screen transmission pull piece, and the upper screen torque steering assembly is connected with the upper screen through an upper screen transmission pull piece. The angle between the lower screen torque transmission piece and the lower screen transmission pull piece and the angle between the upper screen torque transmission piece and the upper screen transmission pull piece are both 30 degrees.

2. The double deck screen drive mechanism for a lap according to claim 1, wherein, The eccentric transmission main shaft is provided with a transmission eccentric sleeve, and the lower screen eccentric connecting rod shell and the upper screen eccentric connecting rod shell are connected with the eccentric transmission main shaft through the transmission eccentric sleeve.

3. The double deck screen drive mechanism for a lap according to claim 1, wherein, The eccentric transmission main shaft is connected with a driving motor through a triangular belt.

4. The double deck screen drive mechanism for a lap according to claim 3, wherein, The lower screen transmission pull piece is connected with the lower screen through a lower screen driving cross beam, and the upper screen transmission pull piece is connected with the upper screen through an upper screen driving cross beam.

5. The double deck screen drive mechanism for a lap according to claim 1, wherein, A spring support seat and a spring are arranged on the lower screen and the upper screen, and the spring is arranged on the spring support seat. The shaft diameter of the eccentric transmission main shaft is 55 mm.

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