CN113800281A

CN113800281A - Scraper screening conveyer

Info

Publication number: CN113800281A
Application number: CN202111287239.8A
Authority: CN
Inventors: 刘绍强; 张薇; 周晖; 刘洋; 吴艳坤; 崔辰浩
Original assignee: Zhengzhou Zhonghang Weier Technology Co ltd
Current assignee: Zhengzhou Zhonghang Weier Technology Co ltd
Priority date: 2021-11-02
Filing date: 2021-11-02
Publication date: 2021-12-17
Anticipated expiration: 2041-11-02
Also published as: CN113800281B

Abstract

A scraper screening conveyor comprises an arc scraper conveyor and an rejected material recovery assembly, wherein a circular scraper assembly is arranged on the arc scraper conveyor, the conveying surface at the upper end of the arc scraper conveyor is arc-shaped, the circular scraper assembly comprises an arc cover and scrapers, the arc cover is mounted at the upper end of an arc scraper conveyor frame, the scrapers are mounted in the arc cover, the left end of the arc cover is connected with a discharge hopper, the lower side of the discharge hopper is connected with a screening assembly, the screening assembly comprises an arc slide screen section, the left side and the right side of the slide screen section are respectively provided with a crushed material outlet and a material outlet, the crushed material outlet is connected with a first crushed material conveying device or a second crushed material conveying device, and the lower side of the material outlet is provided with a discharge conveyor; the invention has the advantages of ingenious structure and novel conception, and can improve the proportion of qualified products by more than 1% and save the land area by improving the traditional arc scraper conveyor and adding the screening component and the rejected product recovery component to be used together with a threshing machine.

Description

Scraper screening conveyer

Technical Field

The invention relates to the technical field of tobacco processing, in particular to a scraper screening conveyor.

Background

In the tobacco threshing and redrying line and the air sorting and impurity removing line, a scraper feeder is generally arranged, which has the function of enabling materials (tobacco products) to uniformly enter the next-stage equipment, wherein about 1% of the materials are leaves with the diameter less than 6.35mm and crushed powder enter the next-stage equipment.

The classification of the quality of cut tobacco leaves in the tobacco industry standard is specified: the leaves larger than 12.7mm square are called large and medium pieces, the leaves 2.36-6.35 mm square are called fragments, and the leaves smaller than 2.36mm square are called powder; the quality requirement of the threshing process is as follows: the upper smoke fragment rate is not more than 4%, the middle smoke fragment rate is not more than 5%, the lower smoke fragment rate is not more than 6%, and the powder is not more than 1.3%.

If the chips and the scraps can be separated in the scraper conveying link, about 1% of unqualified products are removed from the feeding end of the threshing machine, taking 6000kg/h of the threshing machine as an example, 720kg of chips and scraps can be reduced to enter the threshing machine after working for 12 hours every day, so that the further crushing loss of the materials is avoided, more beneficially, 1% of unqualified products are removed from the feeding end of the threshing machine, the proportion of the qualified products at the outlet end is increased by at least 1%, the data is one of processing core parameters of redrying enterprises, and the comprehensive advantages of the reputation degree of the enterprise, the market share rate and the like are achieved.

There is a need for a scraper screening conveyor that addresses this problem.

Disclosure of Invention

In view of the above situation, in order to overcome the defects of the prior art, the invention aims to provide a scraper screening conveyor which effectively solves the problems on the premise of not increasing other screening devices and occupied area.

The technical scheme includes that the automatic material conveying device comprises an arc scraper conveyor, a circular scraper component is arranged on the arc scraper conveyor, a conveying surface at the upper end of the arc scraper conveyor is arc-shaped, the circular scraper component comprises an arc cover and a scraper, the arc cover is mounted at the upper end of an arc scraper conveyor frame, the scraper is mounted in the arc cover, the left end of the arc cover is connected with a discharge hopper, the lower side of the discharge hopper is connected with a screening component, the screening component comprises an arc-shaped slide screen section, a crushed material outlet and a material outlet are respectively formed in the left side and the right side of the slide screen section, the crushed material outlet is connected with a first crushed material conveying device or a second crushed material conveying device, and a discharge conveyor is arranged below the material outlet.

The invention has the beneficial effects that: the invention has the advantages of ingenious structure and novel conception, improves the traditional arc scraper conveyor, adds the screening component and the rejected material recovery component, is matched with a threshing machine for use, can improve the qualified product proportion by more than 1 percent, can obtain good and obvious economic benefit, and can save the land area by arranging the screening component and the rejected material recovery component at the lower side of the arc scraper conveyor.

Drawings

FIG. 1 is a schematic structural view of the present invention

Fig. 2 is a front view of the first embodiment of the present invention.

Fig. 3 is a front view of a second embodiment of the present invention.

Figure 4 is a schematic diagram of the construction of the folding screen of the present invention.

Figure 5 is a schematic diagram of the construction of the bin folding screen of the present invention.

Fig. 6 is a schematic view of the structure of the first scrap conveyor apparatus according to the invention.

Fig. 7 is a schematic view of the structure of a second scrap conveyor apparatus according to the invention.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Example 1:

as shown in the figures 1, 2, 4 and 6, the invention comprises an arc scraper conveyor 1, a circular scraper component is arranged on the arc scraper conveyor 1, the conveying surface at the upper end of the arc scraper conveyor 1 is arc-shaped, the circular scraper component comprises an arc cover 2 arranged at the upper end of a conveying frame of the arc scraper 3 and a scraper 3 arranged in the arc cover 2, the left end of the arc cover 2 is connected with a discharge hopper 4, the scraper 3 scrapes materials conveyed by the scraper 3 conveyor to the discharge hopper 4 by rotating the scraper 3, the lower side of the discharge hopper 4 is connected with a screening component, the screening component comprises an arc-shaped screen sliding section 5, the upper end of the screen sliding section 5 is connected with the discharge hopper 4, the left side and the right side of the screen sliding section 5 are respectively provided with a crushed aggregate outlet 6 and a material outlet 7, the crushed aggregate outlet 6 is connected with a first crushed aggregate conveying device or a second crushed aggregate conveying device, the lower side of the material outlet 7 is provided with a discharge conveyor 8, the fragments falling to the square of less than 6.35mm in the material of the slide section 5 are conveyed and collected by the first or second scrap conveyor device through the scrap outlet 6, and the fragments falling to the square of more than 6.35mm are slid along the slide section 5 to the discharge conveyor 8 for collection and conveying.

The screening subassembly still include casing 9, swift current sieve section 5 for the formula of turning back sieve separator, the formula of turning back sieve separator of turning back is equipped with straight board 11 of downward sloping including setting up the curved first screen cloth on casing 9, the lower extreme of first screen cloth, is the acute angle between straight board 11 and the first screen cloth, the piece falls again after passing first screen cloth and dropping on straight board 11 promptly.

The first screen comprises an arc-shaped plate 10, a plurality of through grooves 12 are uniformly distributed on the arc-shaped plate 10, the width of each through groove 12 is 2-10mm, and the interval between every two through grooves 12 is 2-20 mm.

First crushed aggregates conveyor include crushed aggregates storehouse 13, the upper end in crushed aggregates storehouse 13 is connected with the lower extreme that casing 9 was stretched out to straight board 11, the lower extreme of crushed aggregates storehouse 13 is connected with rotatory blanking device 14, the lower extreme of rotatory blanking device 14 is connected with venturi conveyer 15, venturi conveyer 15's left end is connected with compressed air source 16, venturi conveyer 15's right-hand member is connected with pneumatic conveying pipeline 17 to this transmits the piece.

The upper side of the discharging conveyor 8 is also provided with an opening and closing door 18, a buffer bin 19 is formed between the opening and closing door 18 and the shell 9, materials can be stacked in the buffer bin 19, and then conveyed through the discharging conveyor 8 after being stacked to a certain volume, and energy can be saved.

The lower end of the discharging conveyor 8 is also provided with a frame 20.

The pressure provided by the compressed air source 16 is greater than or equal to 0.1 MPa.

Example 2:

as shown in the figures 3, 5 and 7, the automatic material scraping and conveying device comprises an arc scraper conveyor 1, a circular scraper component is arranged on the arc scraper conveyor 1, the conveying surface at the upper end of the arc scraper conveyor 1 is arc-shaped, the circular scraper component comprises an arc cover 2 arranged at the upper end of a conveying frame of the arc scraper 3 and a scraper 3 arranged in the arc cover 2, the left end of the arc cover 2 is connected with a discharge hopper 4, the scraper 3 scrapes materials conveyed by the scraper 3 conveyor to the discharge hopper 4 by rotating the scraper 3, the lower side of the discharge hopper 4 is connected with a screening component, the screening component comprises an arc-shaped slide screen section 5, the upper end of the slide screen section 5 is connected with the discharge hopper 4, the left side and the right side of the slide screen section 5 are respectively provided with a crushed material outlet 6 and a material outlet 7, the crushed material outlet 6 is connected with a second conveying device, the lower side of the material outlet 7 is provided with a material outlet 8, and crushed material pieces falling in the materials of the slide screen section 5 and with a square size smaller than 6.35mm are conveyed by a first crushed material conveying device or a second crushed material conveying device through the crushed material outlet 6 The crushed aggregates conveying device conveys and collects the crushed aggregates, and the crushed aggregates with the square size larger than 6.35mm are slidingly sent to the discharging conveyor 8 along the slide section 5 for collection and conveying.

Screening subassembly still include casing 9, swift current sieve section 5 for storehouse formula sieve separator, storehouse formula sieve separator includes trapezoidal loading head 21, the upper end of loading head 21 is equipped with material collecting port 22, install the second screen cloth on the material collecting port 22, the lower extreme of loading head 21 still is equipped with the material mouth, the piece passes behind the second screen cloth and falls to collect back rethread material mouth discharge in loading head 21.

The second screen is a plurality of arc-shaped stop rods 23 uniformly distributed at the position of the material collecting opening 22, the distance between every two adjacent arc-shaped stop rods 23 is 2-12mm, and the diameter of each arc-shaped stop rod 23 is 2-20 mm.

The second crushed aggregates conveying device comprises a rotary blanking device 14 connected with a material port, the lower end of the rotary blanking device 14 is connected with a negative pressure mixing accelerator 24, the left end of the negative pressure mixing accelerator 24 is connected with a Roots blower 25, and the right end of the negative pressure mixing accelerator 24 is connected with a pneumatic conveying pipeline 17, so that the crushed aggregates are conveyed.

The lower end of the discharging conveyor 8 is also provided with a frame 20.

When the material screening device is used, materials are conveyed to the conveying belt of the arc scraper conveyor 1 through the upstream conveyor, the belt is fed forwards, the materials enter the scraper 3 along the arc plate 10, the materials are uniformly scraped to the discharge hopper 4 through the scraper 3, the materials enter the screening assembly, the materials with set specifications are screened, unqualified materials are rejected and then enter the first crushed material conveying device or the second crushed material conveying device for recovery, and qualified materials enter the discharge conveyor 8 for conveying.

The foregoing detailed description/examples, which are specific embodiments of the present invention and are intended to be illustrative of the concepts of the present invention, are illustrative and exemplary and are not to be construed as limiting the embodiments of the present invention and the scope of the invention. In addition to the embodiments described herein, those skilled in the art will be able to employ other technical solutions which are obvious based on the disclosure of the claims and the specification of the present application, and these technical solutions include those which make any obvious replacement or modification of the embodiments described herein, and all of which are within the scope of the present invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims

1. The utility model provides a scraper blade screening conveyer, includes circular arc scraper conveyor (1), is equipped with the circular arc scraper blade subassembly on circular arc scraper conveyor (1), and the transport face of circular arc scraper conveyor (1) upper end is the arc, and the circular arc scraper blade subassembly is including installing circular arc cover (2) on circular arc scraper blade (3) carriage and installing scraper blade (3) in circular arc cover (2), and the left end of circular arc cover (2) is connected with out hopper (4), its characterized in that, the downside of going out hopper (4) be connected with the screening subassembly, the screening subassembly includes curved swift current sieve section (5), the left side and the right side of swift current sieve section (5) are equipped with crushed aggregates export (6) and material export (7) respectively, crushed aggregates export (6) are connected with first crushed aggregates conveyor or second crushed aggregates conveyor, the downside of material export (7) is equipped with out material conveyor (8).

2. A scraper screening conveyor as claimed in claim 1 wherein said screen assembly includes a housing (9), said chute section (5) being a fold-back screen, said fold-back screen including a curved first screen disposed on said housing (9), said first screen having a lower end provided with a straight plate (11), said straight plate (11) and said first screen being at an acute angle.

3. The scraper screening conveyor of claim 1, wherein the screening assembly comprises a housing (9), the screening section (5) is a bin type screen, the bin type screen comprises a collector (21), a material collecting port (22) is formed in the upper end of the collector (21), a second screen is installed on the material collecting port (22), and a material port is formed in the lower end of the collector (21).

4. A scraper screening conveyor as claimed in claim 2 wherein said first screen comprises an arcuate plate (10), said arcuate plate (10) having a plurality of through slots (12) uniformly distributed therein.

5. A scraper screening conveyor as claimed in claim 3 wherein said second screen is a plurality of arcuate bars (23) evenly spaced at the collection opening (22).

6. The scraper screening conveyor of claim 2 or 3, wherein the first crushed material conveying device comprises a crushed material bin (13), the upper end of the crushed material bin (13) is connected with the lower end of the straight plate (11) extending out of the casing (9), the lower end of the crushed material bin (13) is connected with a rotary blanking device (14), the lower end of the rotary blanking device (14) is connected with a Venturi conveyor (15), the left end of the Venturi conveyor (15) is connected with a compressed air source (16), and the right end of the Venturi conveyor (15) is connected with a pneumatic conveying pipeline (17).

7. The scraper screening conveyor as claimed in claim 2 or 3, wherein the second crushed material conveying device comprises a rotary blanking device (14) connected with the material port, the lower end of the rotary blanking device (14) is connected with a negative pressure mixing accelerator (24), the left end of the negative pressure mixing accelerator (24) is connected with a Roots blower (25), and the right end of the negative pressure mixing accelerator (24) is connected with a pneumatic conveying pipeline (17).

8. A scraper screening conveyor as claimed in claim 1, characterised in that the upper side of the outfeed conveyor (8) is also provided with an opening and closing door (18), a surge bin (19) being formed between the opening and closing door (18) and the housing (9).

9. A scraper screening conveyor as claimed in claim 1, characterised in that the lower end of the outfeed conveyor (8) is provided with a frame (20).

10. A scraper screening conveyor as claimed in claim 6, wherein said compressed air source (16) provides a pressure of 0.1 MPa or more.