CN219729558U - Scraper for cleaning conveyor belt in tobacco processing - Google Patents

Abstract

The utility model relates to the technical field of tobacco processing, and particularly discloses a scraper with long service life and good cleaning effect for cleaning a conveying belt in tobacco processing. The scraper is propped against the belt through the blade of the scraper, and impurities and adhesion on the surface of the belt are scraped by the blade by utilizing the relative movement of the scraper and the belt when the belt rotates, so that the cleaning effect of the belt is improved; after the blade part is worn, the angle of the scraper can be adjusted to enable the scraper to be used continuously until the blade is worn completely, so that the service life of the scraper can be prolonged, and the cleaning cost of the belt can be reduced.

Description

Scraper for cleaning conveyor belt in tobacco processing

Technical Field

The utility model relates to the technical field of tobacco processing, in particular to a scraper for cleaning a conveying belt in tobacco processing.

Background

The belt conveyor is mainly used for conveying materials in production lines of line production, and is mainly used for conveying tobacco in tobacco shred making workshops in the field of tobacco processing. At present, the tobacco processing field adopts band conveyer to transport tobacco more, and in tobacco transportation, tobacco piece easily drops on the belt, consequently, need carry out periodic or real-time cleanness to the belt to guarantee the cleanness on belt surface, and then guarantee tobacco processing quality.

At present, the cleaning mechanism of the tobacco belt conveyor on the market mainly comprises a hairbrush and a rotary scraping belt (namely a hairbrush cleaning mechanism and a scraping belt cleaning mechanism) which are arranged at a belt outlet, and the cleaning mechanism sweeps out broken tobacco leaves and smoke dust adhered to the surface of the belt, so that the surface of the belt is kept clean. Wherein, brush cleaning mechanism fixes palm on the brush roll body, revolves with the scavenging impurity through the drive brush roll body, but to the station that adds the sugar material in the workshop and the station after the stem line heats humidification, the material viscosity of this part station department is great, adopts the brush to clean the circumstances that the brush adhesion easily appears, needs frequent change brush, shortens brush life, and cleaning effect is not enough. The scraping type cleaning mechanism is characterized in that the belt material is arranged on the rotating body, the rotating body is driven to rotate so as to sweep away the adhered material on the belt, however, the scraping type cleaning mechanism is subjected to alternating load due to the radial force, the driving mechanism is easy to damage, the service life is short, and the cleaning effect is poor.

Disclosure of Invention

In view of the above, it is desirable to provide a scraper for cleaning a conveyor belt in tobacco processing that has a long service life and a good cleaning effect.

A scraper for cleaning a conveying belt in tobacco processing is arranged at an outlet of a tobacco belt conveyor and comprises a fixed seat, an arc-shaped guide piece and a cutting edge, wherein the fixed seat is fixed on an external support in an angle-adjustable mode, the arc-shaped guide piece is positioned above the fixed seat and fixedly connected with the fixed seat, and the cutting edge is fixed at the top end of the arc-shaped guide piece and abuts against a belt of the tobacco belt conveyor.

In one embodiment, the fixing base, the arc-shaped guide member and the blade are integrally formed.

In one embodiment, the arcuate flow guide comprises an arcuate working surface facing away from the belt of the tobacco belt conveyor, an arcuate transition surface adjacent to the belt of the tobacco belt conveyor.

In one embodiment, the blade comprises an arc-shaped guide surface connected with the arc-shaped working surface and an inclined surface connected with the arc-shaped transition surface and arranged at an included angle with the arc-shaped guide surface.

In one embodiment, the blade is mounted on the belt within a range of + -60 DEG of oscillation about the drive roller axis of the tobacco belt conveyor, with reference to a horizontal line passing through the drive roller axis.

In one embodiment, the holder, the arcuate deflector and the blade are made of food grade material.

In one embodiment, the fixing base, the arc-shaped guide piece and the blade are made of high-temperature-resistant and moisture-proof materials.

In one embodiment, the holder, the arcuate deflector and the blade are made of polyethylene or nylon material.

In one embodiment, the fixing base is fixed on the external support by a screw or a pin, or is pressed on the external support by a torsion spring or a spring.

In one embodiment, the connection portion between the fixing base and the arc-shaped flow guiding piece is provided with a notch.

According to the scraper for cleaning the conveyor belt in tobacco processing, the blade of the scraper is abutted against the belt, and impurities and adhesion on the surface of the belt are scraped by the blade by utilizing the relative movement of the scraper and the belt when the belt rotates, so that the cleaning effect of the belt is improved; after the blade part is worn, the angle of the scraper can be adjusted to enable the scraper to be used continuously until the blade is worn completely, so that the service life of the scraper can be prolonged, and the cleaning cost of the belt can be reduced.

Drawings

FIG. 1 is a schematic view of a doctor blade according to an embodiment of the utility model;

FIG. 2 is a side view of a doctor blade in one embodiment of the utility model;

FIG. 3 is a schematic illustration of a doctor blade mated to a belt conveyor in one embodiment of the utility model;

fig. 4 is a schematic view of the installation angle of the doctor blade in one embodiment of the utility model.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

At present, in the tobacco industry, a belt conveyor only comprises two cleaning devices, namely a brush cleaning device and a rotary scraping device, wherein the brush continuously acts on a belt through bristles to scrape dry broken tobacco on the surface of the belt, so that the effect is better, but the situation that the bristles are adhered easily occurs in special stations, such as a station for heating and humidifying a stem making line and a station for adding sugar; the rotary scraping skin belongs to intermittent cleaning in the cleaning process, is mainly applied to the stem-shaped materials, namely the cleaning of a station before stem cutting, but in practical application, the rotary scraping skin has poor cleaning effect, and the condition that smoke dust in tobacco stems is not cleaned cleanly exists. In view of the above, the utility model provides the scraper with long service life and good cleaning effect for cleaning the conveyor belt in tobacco processing, which is arranged at the outlet of the tobacco belt conveyor to realize continuous cleaning of the belt.

The tobacco processing is mainly divided into cut tobacco making sections and cut stem making sections according to different processes, wherein the cut tobacco making sections are used for processing tobacco leaves and cut tobacco leaves with the material moisture being more than or equal to 18.0% and the material temperature being more than or equal to 35 ℃ and processing tobacco leaves and cut tobacco leaves with the material temperature being more than or equal to 35 ℃ after sugar adding; tobacco stems processed by the cut stem making section contain more tobacco tar, and the moisture of main processing materials is more than or equal to 25%, and the temperature of the materials is more than or equal to 40 ℃ for the tobacco stems and the cut tobacco stems. Therefore, the stations after sugar adding have the problems of loosening and conditioning, moistening and charging, and the stations after heating and humidifying have the problems of washing stems, HT (Heat-Treatment) heating and wetting, super conditioning and the like. The scraper of this embodiment is not only used for the belt cleaning operation of dry material station in the tobacco silk workshop, and especially, this scraper is easy to produce the cleaning effect of adhesion's station in the tobacco silk workshop obvious, and the scraper of this embodiment is to the belt cleaning effect of the station after the sugaring material and the station department after the humidification of heating.

Specifically, referring to fig. 1 and 2, the scraper 10 of the present embodiment includes a fixing seat 100 fixed on an external support in an angle adjustable manner, an arc-shaped guiding member 200 located above the fixing seat 100 and fixedly connected to the fixing seat 100, and a blade 300 fixed on the top end of the arc-shaped guiding member 200 and abutting against a belt of a tobacco belt conveyor. Referring to fig. 3, the scraper 10 is fixedly installed at the outlet of the belt conveyor, the scraper 10 is tangent to a belt sleeved on a driving roller of the belt conveyor, and the continuous material is scraped off by the blade 300 by the acting force generated by the relative movement between the belt and the blade 300 through the continuous rotation of the belt, so that the belt below the scraper 10 is kept clean; the arc-shaped guide piece 200 is used for guiding materials, so that the materials do parabolic motion along the surface of the arc-shaped guide piece 200 after being scraped by the blade 300; the fixing base 100 is used as a mounting part of the scraper 10 and is used for supporting the rest parts; the blade 300 is integrally formed, and is made of a material, when the blade 300 is worn, the rest parts of the blade 300 continuously support the belt by adjusting the installation angle (or the inclination angle) of the fixing seat 100 on the external support, so that the cleaning effect of the blade 300 on the belt is maintained.

In this embodiment, the cross section of the fixing base 100 is in an L-shaped structure, and the end of the bottom of the fixing base 100 is provided with an upwardly extending hook portion 110, so that the fixing base 100 is in a shape similar to a U shape or a shape of a chinese character ', thereby providing an embedding position for the external bracket, and realizing the cooperation between the fixing base 100 and the external bracket. Further, in the present embodiment, the connection portion between the fixing base 100 and the arc-shaped flow guiding member 200 is provided with a notch 120, and the upper edge of the notch 120 provides a vertical limit for the external support, so as to prevent the fixing base 100 from falling off from the external support, thereby improving the stability of installation of the scraper 10. In other embodiments, the fixing base 100 may also be a flat sheet structure extending in a vertical direction or perpendicular to the arc-shaped guide member 200 and extending in a horizontal direction, and of course, depending on the shape of the connection mechanism beside the belt conveyor or at the bottom of the fixing base 100, the fixing base 100 may also be other shapes adapted to the connection mechanism; the width of the scraper 10 is determined by the actual width of the material (tobacco) or the width of the belt, and will not be described in detail.

In addition, in the present embodiment, the fixing base 100 is fixed to the external bracket by a screw or a pin, or is pressed against the external bracket by a torsion spring or a spring. In other words, the fixing base 100 of the present embodiment may be fixedly pressed on the external support by the manner of extrusion limiting, or may be fixed on the external support by the manner of torsion spring pressing or spring pressing.

In this embodiment, the fixing base 100, the arc-shaped guide member 200 and the blade 300 are integrally formed. In other embodiments, when the fixing base 100, the arc-shaped guide member 200 and the blade 300 are all made of metal materials, the three can be fixed by welding; when the fixing base 100, the arc-shaped guide member 200 and the blade 300 are all made of plastic or other hard materials, the three materials can be bonded by glue. It should be noted that, since the scraper 10 is used in a tobacco industry shredding workshop, in order to avoid the influence of the material of the scraper 10 on the tobacco quality, the scraper 10 needs to be made of a material harmless to the human body. In one embodiment, the fixing base 100, the arc-shaped guide member 200 and the blade 300 are made of food-grade materials, so that the cleaning effect is achieved, the service life of the cleaning mechanism is greatly prolonged, and the quality of tobacco products is not affected. In another embodiment, the fixing base 100, the arc-shaped guide member 200 and the blade 300 are made of a high temperature resistant and moisture resistant material, so that the scraper 10 does not react chemically in a high temperature and high humidity state during the processing of tobacco products, and harmful substances are prevented from being generated or polluting the tobacco products. When the scraper 10 is made of materials, the scraper 10 can be made of materials meeting the requirements of food grade, high temperature resistance and moisture resistance. Preferably, in this embodiment, the fixing base 100, the arc-shaped guide member 200 and the blade 300 are made of polyethylene or nylon materials.

Referring to fig. 2, the arc-shaped flow guiding member 200 includes an arc-shaped working surface 210 facing away from the belt of the tobacco belt conveyor and an arc-shaped transition surface 220 close to the belt of the tobacco belt conveyor, and it can be understood that the arc-shaped flow guiding member 200 is formed by bending a sheet or a plate, so that the arc-shaped flow guiding member 200 is used for guiding materials to be scraped on one hand, and on the other hand, when the blade 300 of the scraper 10 abuts against the belt, the arc-shaped flow guiding member 200 can pre-tighten the blade 300 against the belt through elastic potential energy, so that the blade 300 abuts against the belt, and the cleaning effect of the blade 300 on the belt is improved.

Further, the blade 300 includes an arc-shaped guide surface 310 connected to the arc-shaped working surface 210, and an inclined surface 320 connected to the arc-shaped transition surface 220 and disposed at an angle to the arc-shaped guide surface 310. In this embodiment, the included angle between the arc-shaped guiding surface 310 and the inclined surface 320 is set, so that the end of the blade 300 forms a conical tip shape, so as to increase the acting force when the blade 300 abuts against the belt, and prevent the end of the blade 300 from sliding off the belt, so as to ensure the cleaning effect of the scraper 10 on the belt. In addition, it should be emphasized that the arc-shaped working surface 210 and the arc-shaped guiding surface 310 are continuous arc surfaces on the same arc surface, in other words, the curvature of the connection portion of the arc-shaped working surface 210 and the arc-shaped guiding surface 310 is equal to the curvature of the connection portion of the arc-shaped guiding surface 310 and the arc-shaped working surface 210, so that the material scraps can be prevented from accumulating at the connection portion of the arc-shaped working surface 210 and the arc-shaped guiding surface 310 in the falling process, and the cleaning difficulty of the material scraps is reduced.

Referring to fig. 3 and 4, the installation range of the blade 300 on the belt is within ±60° of swinging about the axis of the drive roller 20 of the tobacco belt conveyor, taking the horizontal line passing through the axis of the drive roller 20 as a reference, that is, the blade 300 can move within 120 ° of the angle projected on the belt 30 in the shadow area shown in fig. 4, so that an operator can select a corresponding angle to install the scraper 10 according to the length of the blade 300 and the wear degree of the blade 300, so that the blade 300 abuts against a preset position on the belt 30 to scrape the material on the surface of the belt 30. Preferably, the blade 10 provides optimum cleaning of the belt 30 when the end of the blade 300 is flush with and against the axial center of the drive roller 20.

Referring to fig. 2 again, the shaded area in fig. 2 is the effective area of the blade 300, and when the blade 300 is worn, the blade 300 can be continuously used until the blade 300 is completely worn away by adjusting the inclination angle of the doctor blade 10 to make the end of the blade 300 abut against different positions outside the drive roller 20. Specifically, when the hatched portion shown in fig. 2 is completely worn out, the doctor blade 10 is scrapped.

The cleaning effect of the scraper 10 according to the present embodiment with respect to the brush and the scraper skin will be described below with reference to specific experimental data, and the use of three cleaning mechanisms at the post-stalk-making warming and humidifying station and the sugar-adding station will be described as an example.

Table 1 service life of each cleaning mechanism

In the production station, when the brush is used as a cleaning mechanism, the brush can be adhered to the surface of the material due to sugar materials or tobacco leaves released by heating, and the brush hair is adhered to form a roller shape and loses cleaning capability. When the rotary scraping device is used for cleaning the above stations, although the scraping service life is longer than that of a hairbrush, the cleaning effect is poor, and the problems of elastic deformation and hardening of scraping materials can also occur after long-term use. As can be seen from the above experimental data, the cleaning effect of the doctor blade 10 at the above station is similar to that of a new brush, so that the belt cleaning mechanism can be used for 5 years without replacement. However, it should be noted that, the brush cleaning mechanism is used at the station where the ordinary material state is drier, so that the cost performance is higher, the service time of the brush is equivalent to that of the scraper 10, and the price is lower; the belt conveyor of most stations in the workshop is suitable for the scraper 10, but because the cost of the first installation of the scraper 10 is higher, in the tobacco shred making workshop, a brush and the scraper 10 can be combined, namely, the scraper 10 is used for cleaning the belt at the station after the stem making line is heated and humidified and the station for adding sugar, the brush cleaning mechanism is used for cleaning the belt at the rest stations in the shred making workshop, and the rotary scraping mechanism can be replaced by the scraper 10, so that the overall cost of cleaning the belt in the tobacco shred making workshop is reduced.

According to the scraper 10 for cleaning the conveyor belt in tobacco processing, the blade 300 of the scraper 10 is abutted against the belt, and impurities and adhesion on the surface of the belt are scraped off by the blade 300 by utilizing the relative movement of the scraper 10 when the belt rotates, so that the cleaning effect of the belt is improved; after the blade 300 is partially worn, the angle of the scraper 10 can be adjusted to enable the scraper 10 to be continuously used until the blade 300 is completely worn, so that the service life of the scraper 10 is prolonged, and the cleaning cost of a belt is reduced.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (10)

1. A scraper for cleaning a conveying belt in tobacco processing is arranged at an outlet of a tobacco belt conveyor and is characterized by comprising a fixed seat, an arc-shaped guide piece and a cutting edge, wherein the fixed seat is fixed on an external support in an angle-adjustable manner, the arc-shaped guide piece is positioned above the fixed seat and fixedly connected with the fixed seat, and the cutting edge is fixed at the top end of the arc-shaped guide piece and abuts against a belt of the tobacco belt conveyor.

2. The scraper for cleaning a conveyor belt in tobacco processing of claim 1, wherein the holder, the arcuate guide and the blade are integrally formed.

3. The scraper for cleaning a conveyor belt in tobacco processing of claim 1, wherein the arcuate flow guide comprises an arcuate working surface facing away from the belt of the tobacco belt conveyor, an arcuate transition surface adjacent to the belt of the tobacco belt conveyor.

4. A scraper for cleaning a conveyor belt in tobacco processing according to claim 3, wherein the blade comprises an arcuate guide surface connected to the arcuate working surface, and an inclined surface connected to the arcuate transition surface and disposed at an angle to the arcuate guide surface.

5. A scraper for cleaning a conveyor belt in tobacco processing according to claim 1, wherein the blade is mounted on the belt within a range of ±60° with respect to a horizontal line passing through the drive roller axis of the tobacco belt conveyor and with respect to the drive roller axis.

6. The scraper for cleaning conveyor belt in tobacco processing of claim 1, wherein the holder, the arcuate guide and the blade are made of food grade material.

7. The scraper for cleaning conveyor belt in tobacco processing according to claim 1, wherein the holder, the arcuate guide and the blade are made of a high temperature and moisture resistant material.

8. The scraper for cleaning conveyor belt in tobacco processing according to claim 1, wherein the holder, the arcuate guide and the blade are made of polyethylene or nylon material.

9. A scraper for cleaning a conveyor belt in tobacco processing according to claim 1, wherein the holder is fixed to the outer support by means of screws or pins or is pressed against the outer support by means of torsion springs or springs.

10. The scraper for cleaning a conveyor belt in tobacco processing according to claim 1, wherein a connection portion of the fixing base and the arc-shaped guide member is provided with a recess.