Self-cleaning belt weigher

Abstract

The utility model provides a self-cleaning belt weigher which comprises a base frame, a conveyor shell with the upper side and the two ends open is arranged above the base frame, a plurality of weighing sensors are arranged between the lower end of the conveyor shell and the upper end of the base frame, and the two ends in the conveyor shell are rotationally connected with roll shafts. A conveying belt sleeved with two roll shafts is movably arranged in the conveying machine shell, a driving motor used for driving the roll shafts to rotate is installed on the outer side of the conveying machine shell, and upper limiting strips making contact with the upper side of the upper layer of the conveying belt are inwards arranged on the two sides in the conveying machine shell. Lower supporting strips making contact with the lower side of the upper layer of the conveyor belt are inwards arranged on the two sides in the conveyor shell, one end of the conveyor shell is rotationally connected with an inclined guiding scraper, and a torsional spring used for driving the inclined guiding scraper to rotate in the direction of the conveyor belt is arranged in the conveyor shell. According to the utility model, a brand new structural design is adopted to realize the purpose of limiting materials, and the belt can be self-cleaned in real time.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of belt scale, and relates to a self-cleaning belt scale. BACKGROUND

[0002] The belt scale is a kind of continuous dynamic weighing equipment widely used in mining, metallurgy, chemical industry and other industries, and is used for on-line metering of bulk materials. Its working principle is to measure the mass of materials passing through a specific area per unit time through the weighing sensor installed on the conveyor frame, and to calculate the cumulative weight in combination with the running speed of the belt. The belt scale has the advantages of simple structure, convenient installation and strong adaptability, and can realize real-time monitoring and management of the material conveying process, improve production efficiency and ensure measurement accuracy.

[0003] In order to further increase the load capacity of the conveying belt and avoid the sliding or spilling of materials during transportation, some belt scales adopt innovative design schemes. One method is to improve the traditional flat conveying belt into a V-shaped structure. This design forms a concave V-shaped cross section in the middle of the conveying belt, and uses the higher edges on both sides to limit the lateral displacement of materials, thereby effectively improving the stability and carrying capacity of materials during transportation. In addition, another common design scheme is to install wave-shaped skirts on both sides of the conveying belt. These skirts not only enhance the containment of materials and prevent materials from spilling from the belt edge, but also improve the overall conveying efficiency.

[0004] Although these two design schemes improve the stability and efficiency of material conveying to some extent, they also introduce some new problems. First of all, whether it is a V-shaped structure or the installation of wave-shaped skirts, it will cause the bending stress of the belt at the drum to increase significantly, especially in the transition section area, which is easy to cause local fatigue damage, thereby accelerating the aging and wear of the belt and shortening its service life. Secondly, these structural forms also increase the possibility of material adhering to the surface of the belt, especially at the connection part of the skirt and the belt body or the V-shaped bending part, and the residual materials are difficult to fall off naturally, which not only affects the accuracy of subsequent measurement, but also increases the cleaning and maintenance burden of the equipment and increases the operating cost. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a self-cleaning belt scale, which adopts a brand-new structural design, can achieve the purpose of limiting materials without changing the form of the belt, and can realize real-time self-cleaning of the belt.

[0006] To solve the above technical problems, the utility model provides a self -cleaning belt scale, including base frame, the upside of base frame is provided with the conveyor shell of two ends opening, a plurality of weighing sensors are arranged between the lower end of conveyor shell and the upper end of base frame, both ends in conveyor shell are rotatably connected with roll shaft, the conveyer belt of two roll shafts is movably arranged in conveyor shell, the outside of conveyor shell is installed the drive motor for driving the rotation of roll shaft, both sides in conveyor shell are provided with upper limit strip inwards, the downside of every upper limit strip is in contact with the upside of conveyer belt upper layer, both sides in conveyor shell are provided with the lower support strip of corresponding with upper limit strip inwards, the upside of every lower support strip is in contact with the downside of conveyer belt upper layer, one end of conveyor shell is rotatably connected with the inclined guide blade, the torsional spring that is used for driving the inclined guide blade is provided in conveyor shell and rotates to conveyer belt direction, the upper side of inclined guide blade is in contact with the outside of conveyer belt one end, the side that inclined guide blade is in contact with conveyer belt is the blade edge that cooperates with it.

[0007] By adopting the above technical scheme, the material is added from one end of the conveying belt, the drive motor drives the conveying belt to convey the material forward, the four weighing sensors cooperate to detect the weight on the conveyor shell during the process, so as to realize quantitative batching according to the weight, the upper limit strip and the lower support strip cooperate to clamp the edge of the conveying belt during the process, so as to prevent the material from falling off from both sides, and due to the low-friction wear-resistant coating, the friction between the conveying belt and the upper limit strip and the lower support strip is low, so that a large resistance is not generated, when the material is output from the other end of the conveyor shell, the inclined guide blade is always close to the conveying belt under the action of the torsional spring, the material on the conveying belt is directly transferred to the inclined guide blade and output downward, so that the material adhering to the conveying belt is effectively prevented.

[0008] The utility model further sets up, the lower end of conveyor shell is provided with a plurality of support seat with weighing sensor one to one correspondence between the base frame and corresponding support seat, every weighing sensor is arranged between the base frame and corresponding support seat.

[0009] The utility model further sets up, the rotatable connection of a plurality of parallelly arranged support rollers that are in contact with the upside in conveyer belt is arranged in the conveyor shell.

[0010] The utility model further sets up, one end of every support roller is rotatably connected with corresponding lower support strip.

[0011] The utility model further sets up, the downside of every upper limit strip and the upside of every lower support strip are provided with low-friction wear-resistant coating.

[0012] The low-friction wear-resistant coating is a polytetrafluoroethylene coating.

[0013] The utility model further sets up, two ends of the lower edge of the inclined guide scraper all extend into the conveyor shell and are provided with connecting pivots, each connecting pivot is provided with a torsion spring, and both ends of each torsion spring are connected with the conveyor shell and the inclined guide scraper.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] First, the utility model adopts a novel structure design, does not need to change the form of the belt, and can realize the purpose of limiting the material through cooperation of the upper limiting strip and the lower supporting strip. The belt does not have a large bending stress in the process of conveying the material, reduces the loss of the belt, and further prolongs the service life of the belt.

[0016] Second, in the process of use, the material attached to the conveying belt can be scraped off in real time through the inclined guide scraper, and the inclined guide scraper can continuously adhere to the conveying belt through the action of the torsion spring, effectively preventing the material attached to the conveying belt from affecting the precision of the belt scale. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 is used to show the supporting roller in the conveying belt;

[0019] Figure 3 is a sectional view used to show the positional relationship between the upper limiting strip, the lower supporting strip, and the conveying belt;

[0020] Figure 4 is a partial sectional view used to show the positional relationship between the upper limiting strip, the lower supporting strip, and the inclined guide scraper and the conveying belt.

[0021] Among them, 1, base frame; 2, conveyor shell; 3, supporting seat; 4, weighing sensor; 5, roller shaft; 6, conveying belt; 7, driving motor; 8, upper limiting strip; 9, lower supporting strip; 10, supporting roller; 11, inclined guide scraper; 12, connecting pivot; 13, torsion spring. DETAILED DESCRIPTION

[0022] The self-cleaning belt scale according to the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the present application will be more apparent according to the following description. It should be noted that the accompanying drawings are in a very simplified form and all use non-precise proportions, only for the purpose of facilitating and clarifying the description of the embodiments of the present application. The same or similar reference signs in the drawings represent the same or similar parts.

[0023] Embodiments, with reference to Figures 1-4 The self-cleaning belt scale comprises a base frame 1, an upper side and two ends of the conveyor housing 2 are provided above the base frame 1, four support seats 3 are provided at the lower end of the conveyor housing 2, a weighing sensor 4 is arranged between each base frame 1 and the corresponding support seat 3, a roller shaft 5 is rotatably connected to both ends of the conveyor housing 2, a conveying belt 6 is movably arranged in the conveyor housing 2, the conveying belt 6 is sleeved with two roller shafts 5, a driving motor 7 is installed on the outer side of the conveyor housing 2, the driving motor 7 drives the conveying belt 6 to move.

[0024] An upper limiting strip 8 is arranged inwardly on both sides of the conveyor housing 2, the height of the upper limiting strip 8 is sufficient to prevent the material from falling outwards, the lower side of each upper limiting strip 8 is in contact with the upper side of the upper layer of the conveying belt 6, the lower side of the upper limiting strip 8 is provided with a low-friction wear-resistant coating, a lower supporting strip 9 corresponding to the upper limiting strip 8 is arranged inwardly on both sides of the conveyor housing 2, the upper side of each lower supporting strip 9 is in contact with the lower side of the upper layer of the conveying belt, the upper side of each lower supporting strip 9 is provided with a low-friction wear-resistant coating, the low-friction wear-resistant coating is a polytetrafluoroethylene coating, the polytetrafluoroethylene coating PTFE is a very popular low-friction coating material, which has excellent chemical stability, heat resistance and very low friction coefficient, and is suitable for various environments. A plurality of supporting rollers 10 in contact with the upper side of the conveying belt 6 are rotatably connected between the two lower supporting strips 9.

[0025] One end of the conveyor housing 2 is rotatably connected to an inclined guide scraper 11, both ends of the lower side of the inclined guide scraper 11 extend into the conveyor housing 2 and are provided with a connecting shaft 12, a torsional spring 13 is arranged on each connecting shaft 12, both ends of each torsional spring 13 are connected to the conveyor housing 2 and the inclined guide scraper 11 respectively, the torsional spring 13 drives the inclined guide scraper 11 to rotate towards the conveying belt 6, the upper side of the inclined guide scraper 11 is in contact with the outer side of one end of the conveying belt 6, the side of the inclined guide scraper 11 in contact with the conveying belt 6 is a blade edge matched therewith, which facilitates the scraping of the material adhering to the conveying belt 6.

[0026] Working principle: add material from one end of the conveying belt 6, the driving motor 7 drives the conveying belt 6 to forwardly convey the material, the weight on the conveyor shell 2 is detected by the four weighing sensors 4 in cooperation during the process, so as to realize quantitative batching according to the weight, the upper limiting strip 8 cooperates with the lower supporting strip 9 to clamp the edge of the conveying belt 6 during the process, so as to block the material from falling from both sides, and due to the low friction wear-resistant coating, the friction between the conveying belt 6 and the upper limiting strip 8 and the lower supporting strip 9 is low, so that no large resistance is generated, when the material is output from the other end of the conveyor shell 2, the inclined guide scraper 11 is always close to the conveying belt 6 under the action of the torsion spring 13, the material on the conveying belt 6 is directly transferred to the inclined guide scraper 11 and output downward, so that the material adhering to the conveying belt 6 is effectively prevented.

[0027] It should be further understood that all the "arranged" and similar descriptions in the present application (especially the specification) express that there is a connection relationship between two structures, but the specific connection means is not limited too much, and is usually a conventional connection means, that is, it should be understood that the means is prior art, and does not need to be described too much. For example, "m is arranged with n", only expresses that m structure has n structure, and the specific connection between the two is through welding, riveting, adhesive connection or integral molding, which is within the protection scope of the present application. For example, "x is arranged with y", only expresses that y and x can rotate relative to each other, and as for whether the two are connected through a bearing or y directly penetrates x to be connected with x in rotation, or other realizable modes, which are within the protection scope of the present application.

[0028] The above description is only the description of the preferred embodiment of the present application, and is not any limitation on the scope of the present application. Any change and modification of the present application by the person skilled in the art according to the above disclosure is within the protection scope of the claims.

Claims

1. A self-cleaning belt scale, comprising a base frame (1), an upper side of the base frame (1) is provided with a conveyor housing (2) which is open at both ends, a plurality of weighing sensors (4) are arranged between the lower end of the conveyor housing (2) and the upper end of the base frame (1), characterized in that, Both ends of the conveyor shell (2) are rotatably connected with roller shafts (5), the conveyor shell (2) movably has a conveyor belt (6) sleeving the two roller shafts (5), the outer side of the conveyor shell (2) is provided with a driving motor (7) for driving the roller shafts (5) to rotate, both sides of the conveyor shell (2) are inwardly provided with upper limit strips (8), the lower side of each upper limit strip (8) is in contact with the upper side of the upper layer of the conveyor belt (6), both sides of the conveyor shell (2) are inwardly provided with lower support strips (9) corresponding to the upper limit strips (8), the upper side of each lower support strip (9) is in contact with the lower side of the upper layer of the conveyor belt (6), one end of the conveyor shell (2) is rotatably connected with an inclined guide scraper (11), the conveyor shell (2) is provided with a torsion spring (13) for driving the inclined guide scraper (11) to rotate towards the conveyor belt (6), the upper side of the inclined guide scraper (11) is in contact with the outer side of one end of the conveyor belt (6), the side of the inclined guide scraper (11) in contact with the conveyor belt (6) is a blade edge matched with the conveyor belt (6).

2. A self-cleaning belt scale according to claim 1, wherein The lower end of the conveyor shell (2) is downwardly provided with a plurality of support seats (3) corresponding to the load sensors (4), each load sensor (4) is arranged between the base frame (1) and the corresponding support seat (3).

3. A self-cleaning belt scale according to claim 1, wherein The conveyor shell (2) is rotatably connected with a plurality of support rollers (10) arranged side by side and in contact with the upper side of the conveyor belt (6).

4. A self-cleaning belt scale according to claim 3, wherein One end of each support roller (10) is rotatably connected with the corresponding lower support strip (9).

5. A self-cleaning belt scale as claimed in claim 1, wherein, The lower side of each upper limit strip (8) and the upper side of each lower support strip (9) are provided with a low-friction wear-resistant coating.

6. A self-cleaning belt scale according to claim 5 wherein, The low-friction wear-resistant coating is a polytetrafluoroethylene coating.

7. A self-cleaning belt scale as claimed in claim 1, wherein, Both ends of the lower side of the inclined guide scraper (11) extend into the conveyor shell (2) and are provided with a connecting rotating shaft (12), each connecting rotating shaft (12) is provided with a torsion spring (13), and both ends of each torsion spring (13) are respectively connected with the conveyor shell (2) and the inclined guide scraper (11).

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