Belt weigher capable of reducing weighing error

Abstract

The utility model discloses a belt weigher capable of reducing weighing errors, which comprises supports, the two supports are connected through two stress carrier roller frames, a weigher frame fixing beam vertically connected with the two supports is arranged between the two stress carrier roller frames, the two stress carrier roller frames are connected through two weigher frame stress beams, and the two weigher frame stress beams are connected with the two weigher frame fixing beams. The scale frame stress beam is arranged below the scale frame fixing beam and is connected with the scale frame fixing beam through a dynamic weight sensor, a carrier roller is arranged above the stress carrier roller frame, a belt is arranged on the carrier roller, a first baffle is arranged on the scale frame stress beam, and a second baffle is arranged on the stress carrier roller frame. The first baffle and the second baffle can prevent materials from falling onto the scale frame stress beam and the stress carrier roller frame, weighing accuracy is guaranteed, meanwhile, the air knives are arranged towards the scale frame stress beam and the stress carrier roller frame respectively, regular soot blowing is carried out, cleanliness of the scale frame stress beam and the stress carrier roller frame is guaranteed, and the scale frame stress beam and the stress carrier roller frame are prevented from falling onto the scale frame stress beam and the stress carrier roller frame. And the weighing accuracy is further ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of belt scales, and in particular relates to a belt scale capable of reducing weighing errors. Background Art

[0002] Electronic belt scales are widely used for continuous measurement of bulk materials and are a kind of continuous dynamic measurement equipment. Compared with static weighing instruments such as floor scales and hopper scales, they have unique advantages, namely, uninterrupted and continuous measurement of materials, which can greatly improve the efficiency of material transportation and measurement. As a dynamic measurement scale, there are many factors that affect its measurement accuracy, such as improper sensor selection, installation defects, roller damage, belt deviation, etc. The above problems can be effectively solved in advance. However, when the belt deviates or the belt is damaged, the material will fall off the belt during transportation. When the running belt passes through the weighing section, the wet material will stick to the load-bearing beam of the scale frame, and as the running time of the belt increases, the material will accumulate more and more. This part of the material will cause the measurement of the dynamic measurement scale, causing measurement deviation. In addition, the scale frame is exposed to dust for a long time, and the dust is seriously accumulated. In order to clean the scale frame, personnel must enter the scale room, which is easy to inhale dust and cause harm to the body. Utility Model Content

[0003] Technical problem to be solved: In view of the above technical problem, the utility model provides a belt scale for reducing weighing errors, wherein the baffle can not only prevent materials from falling onto the load-bearing beam and load-bearing roller frame of the scale frame, thereby ensuring the accuracy of weighing; but also the wind knife performs regular dust blowing, thereby ensuring the cleanliness of the load-bearing beam and load-bearing roller frame of the scale frame, thereby further ensuring the accuracy of weighing.

[0004] Technical solution: A belt scale for reducing weighing errors, comprising a bracket, wherein two brackets are connected by two load-bearing roller frames, a scale frame fixed beam vertically connected to the two brackets is provided between the two load-bearing roller frames, the two load-bearing roller frames are connected by two scale frame load-bearing beams, the scale frame load-bearing beams are arranged below the scale frame fixed beams, and are connected to the scale frame fixed beams via a dynamic weight sensor, a roller is provided above the load-bearing roller frame, a belt is provided on the roller, a first baffle is provided on the scale frame load beam, and a second baffle is provided on the load-bearing roller frame.

[0005] Preferably, the number of rollers on the load-bearing roller frame is 3, and the 3 rollers form an isosceles trapezoid without an upper base.

[0006] Preferably, the cross-sections of the first baffle and the second baffle are in the shape of an upwardly convex arc.

[0007] Preferably, wind knives are provided on the side of the first baffle plate facing the load-bearing beam of the scale frame and on the side of the second baffle plate facing the load-bearing roller frame.

[0008] Preferably, the load-bearing beam of the scale frame is parallel to the bracket and perpendicular to the load-bearing roller frame.

[0009] Beneficial effect: The utility model installs a first baffle plate on the fixed beam of the scale frame to block the load-bearing beam of the scale frame. The weight of the first baffle plate and the second baffle plate connected to the first baffle plate is borne on the fixed beam of the scale frame, and no load is generated on the dynamic weight sensor. The cross-section of the first baffle plate and the second baffle plate is an upwardly convex arc shape, which can not only prevent accidentally dropped materials from falling onto the load-bearing beam of the scale frame and the load-bearing roller frame, but also the materials can easily slide off the arc-shaped first baffle plate and the second baffle plate, thereby ensuring accurate weighing. At the same time, wind knives are respectively arranged towards the load-bearing beam of the scale frame and the load-bearing roller frame for regular dust blowing, thereby ensuring the cleanliness of the load-bearing beam of the scale frame and the load-bearing roller frame, and further ensuring accurate weighing. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a top view of the belt scale of the utility model;

[0011] Figure 2 This is the front view of the belt scale of the utility model;

[0012] Figure 3 It is a side view of the belt scale of the utility model;

[0013] Serial numbers in the figure: 1, bracket; 2, scale frame fixed beam; 3, roller; 4, scale frame load beam; 5, load-bearing roller frame; 6, first baffle; 6-1, second baffle; 7, wind knife; 8, belt. DETAILED DESCRIPTION

[0014] The technical solution of the utility model is further described in detail below in conjunction with the accompanying drawings. Example 1

[0015] Reference Figure 1-Figure 3A belt scale for reducing weighing errors comprises a bracket 1, two brackets 1 are connected by two load-bearing roller frames 5, a scale frame fixed beam 2 vertically connected to the two brackets 1 is arranged between the two load-bearing roller frames 5, the two load-bearing roller frames 5 are connected by two scale frame load beams 4, the scale frame load beams 4 are parallel to the bracket 1 and perpendicular to the load-bearing roller frames 5, the scale frame load beams 4 are arranged below the scale frame fixed beams 2, and are connected to the scale frame fixed beams 2 through a dynamic weight sensor, rollers 3 are arranged above the load-bearing roller frames 5, the number of rollers 3 on the load-bearing roller frames 5 is 3, and the 3 rollers 3 form an integral structure. An isosceles trapezoid with an upper bottom; a belt 8 is provided on the roller 3, a first baffle 6 is provided on the load-bearing beam 4 of the scale frame, and a second baffle 6-1 is provided on the load-bearing roller frame 5, and the cross-sections of the first baffle 6 and the second baffle 6-1 are circular arcs convex upward; one end of the first baffle 6 is installed on the fixed beam 2 of the scale frame, and the other end extends between the load-bearing roller frame 5 and the roller 3, and the second baffle 6-1 is arranged on the load-bearing roller frame 5 between the load-bearing beam 4 of the scale frame and the bracket 1; wind knives 7 are provided on the side of the first baffle 6 facing the load-bearing beam 4 of the scale frame and on the side of the second baffle 6-1 facing the load-bearing roller frame 5.

[0016] Specifically, the load-bearing roller frame 5 is arranged on the load-bearing beam 4 of the scale frame, and the load-bearing beam 4 of the scale frame is connected to the fixed beam 2 of the scale frame through a dynamic weight sensor. The belt 8 on the roller 3 transmits the gravity of the material to the load-bearing beam 4 of the scale frame through the load-bearing roller frame 5. The load-bearing beam 4 of the scale frame is transmitted to the connected dynamic weight sensor for measurement. However, when the material is scattered and accumulated on the load-bearing beam 4 and the load-bearing roller frame 5 during the loading process, the weight of this part of the accumulated material becomes a constant, causing a deviation in the cumulative data and resulting in inaccurate results. The fixed beam 2 of the scale frame is modified, and a set of first baffles 6 is designed and installed above and parallel to the load-bearing beam 4 of the scale frame. The first baffle 6 covers the load-bearing beam 4 of the scale frame, and the second baffle 6-1 covers the load-bearing roller frame 5. The installation method of the first baffle 6 and the second baffle 6-1 adopts a split and quick-disassembly method, which is convenient for rapid separation and inspection and maintenance. Two through quick-release pins are designed on the fixed beam 2 of the scale frame, and one end of each of the four first baffles 6 is inserted into the corresponding position, and then the first baffle 6 is positioned and fixed. The first baffle 6 is horizontally parallel to the load-bearing beam 4 of the scale frame, and is suspended above the load-bearing beam 4 of the scale frame, leaving enough space to prevent the first baffle 6 from sinking and contacting the load-bearing beam 4 of the scale frame after material accumulation, resulting in measurement errors. In addition, the width of the first baffle 6 and the second baffle 6-1 is appropriately larger than the obstruction, and the cross-section of the first baffle 6 and the second baffle 6-1 is an arc shape, which is conducive to the sliding of the accumulated materials on the upper surface. On the fixed beam 2 of the scale frame, a wind knife 7 with the same width as the load-bearing beam 4 of the scale frame is arranged at the socket position of the first baffle plate 6, and a wind knife 7 is also arranged at the plug-in installation position of the second baffle plate 6-1. The function of the wind knife 7 is to regularly blow away the accumulated dust on the load-bearing beam 4 of the scale frame and the load-bearing roller frame 5. The interval is set to be 2 hours or regular cleaning is set according to the dust concentration on site. The combination of the first baffle plate 6, the second baffle plate 6-1 and the wind knife 7 can realize the long-term self-cleaning of the belt scale and prevent the accumulation of materials and dust from affecting the measurement accuracy.

[0017] The working process of the utility model is:

[0018] First, when dust is generated during the material transportation process of the belt 8, it will accumulate on the load-bearing beam 4 of the scale frame after settling for a period of time in the closed scale room. The wind knife 7 can be used to blow regularly to clean the dust accumulation and keep the scale frame clean and tidy. Then, when the belt 8 transports excessive materials or the belt 8 itself is torn and damaged, the materials in transportation are thrown and dropped onto the first baffle 6 and the second baffle 6-1. Since the baffle is designed to be an arc shape and its width is slightly larger than the load-bearing beam 4 of the scale frame and the load-bearing roller frame 5, the materials slide or accumulate on the baffle in small amounts, eliminating the constant measurement error caused by throwing and accumulation. Finally, when the equipment is shut down or overhauled, the staff will deeply clean and maintain the first baffle 6 and the second baffle 6-1 to keep the equipment clean and tidy for a long time and reduce the random errors generated during the operation of the belt scale.

[0019] The embodiments of this specific implementation method are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. Therefore, all equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A belt scale for reducing weighing errors, characterized in that: It includes a bracket, two brackets are connected by two load-bearing roller frames, a scale frame fixed beam vertically connected to the two brackets is provided between the two load-bearing roller frames, the two load-bearing roller frames are connected by two scale frame load-bearing beams, the scale frame load-bearing beam is arranged below the scale frame fixed beam, and is connected to the scale frame fixed beam through a dynamic weight sensor, a roller is provided above the load-bearing roller frame, a belt is provided on the roller, a first baffle is provided on the scale frame load-bearing beam, and a second baffle is provided on the load-bearing roller frame.

2. A belt scale for reducing weighing errors according to claim 1, characterized in that: The number of rollers on the load-bearing roller frame is 3, and the 3 rollers form an isosceles trapezoid without an upper bottom.

3. A belt scale for reducing weighing errors according to claim 1, characterized in that: The cross-sections of the first baffle and the second baffle are in an arc shape convex upward.

4. A belt scale for reducing weighing errors according to claim 1 or 3, characterized in that: Wind knives are provided on the side of the first baffle plate facing the load-bearing beam of the scale frame and on the side of the second baffle plate facing the load-bearing roller frame.

5. A belt scale for reducing weighing errors according to claim 1, characterized in that: The load-bearing beam of the scale frame is parallel to the bracket and perpendicular to the load-bearing roller frame.

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