Belt weigher

Abstract

The utility model discloses a belt weigher, and the belt weigher comprises a frame which comprises a frame body and a supporting part, and the supporting part is detachably connected with the frame body; the number of the rollers is two, and the two rollers are arranged in the conveying direction in a spaced mode and rotationally installed on the frame body. The belt is wound outside the two rollers; the carrier roller is located between the two rollers and makes contact with the upper layer of the belt; the carrier roller comprises a roller shaft and a roller body rotationally installed outside the roller shaft. Wherein the number of the supporting pieces is two times that of the carrier rollers, the supporting pieces are correspondingly arranged at the two ends of each carrier roller, and the two ends of the roller shaft are connected with the corresponding supporting pieces; the upper layer of the belt, the carrier roller and the frame body are sequentially arranged from top to bottom, and the length of the supporting piece in the conveying direction is smaller than the length of the interval between the upper layer of the belt and the frame body in the height direction.

Description

Technical Field

[0001] This application belongs to the technical field of belt scales, and specifically relates to a belt scale. Background Technology

[0002] Sintering machines are suitable for sintering operations in large-scale ferrous metallurgical sintering plants. They are the main equipment in the sintering process and can sinter concentrates and rich mineral powders of different compositions and particle sizes into blocks. They can also partially eliminate harmful impurities such as sulfur and phosphorus contained in the ore. Sintering machines are available in several specifications with different lengths and widths according to their area. Users can choose the appropriate machine based on their output and site conditions. The larger the sintering area, the higher the output.

[0003] The secondary batching of the sintering machine's mixture requires weighing by a belt-mounted electronic scale. The scale's frame has an upward-facing groove, into which the idler roller shaft is directly fitted. The roller body fits against the upper layer of the belt to support it. When replacing or repairing the idler roller, it needs to be removed from the frame.

[0004] In related technologies, operators separate the idler roller from the groove in the frame by moving it upwards. However, a guide plate is located above the belt, and the upward movement of the idler roller interferes with the guide plate. Therefore, the guide plate must be removed first, and then the idler roller must be moved upwards to separate it from the frame. After installing a new idler roller, the guide plate is then installed. This makes the disassembly and installation process of the idler roller cumbersome, increases the workload of the operators, and is inefficient. Summary of the Invention

[0005] To address the current technical problem of low efficiency in the assembly and disassembly of idlers, this application provides a belt scale.

[0006] This application provides a belt scale, including:

[0007] The frame includes the body and supporting components;

[0008] Two rollers are provided, which are spaced apart along the transport direction and rotatably mounted on the frame.

[0009] A belt is wound around the two rollers;

[0010] An idler roller is located between the two rollers and in contact with the upper layer of the belt; the idler roller includes a roller shaft and a roller body rotatably mounted outside the roller shaft;

[0011] The support member is detachably connected to the frame, the number of support members is twice the number of idlers, and the support members are provided at both ends of the idlers. The two ends of the roller shaft are connected to the corresponding support members. The upper belt, the idlers and the frame are arranged sequentially from top to bottom, and the length of the support member along the transport direction is less than the length along the interval height direction.

[0012] In some embodiments, the support member is offset from the frame along the width direction of the belt, the upper end of the support member is provided with an upward-facing groove, and the two ends of the roller are disposed in the corresponding grooves.

[0013] In some embodiments, the outer periphery of the roller shaft is provided with an anti-rotation surface, and the groove engages with the shaft segment where the anti-rotation surface is located.

[0014] In some embodiments, the upper end of the support member is projected along the axial direction of the roller shaft within the outline of the idler roller.

[0015] In some embodiments, the support member is screwed to the frame.

[0016] In some embodiments, the roller shaft is connected to the frame via a bearing, the frame having an open mounting cavity, and the bearing being located within the mounting cavity; the belt scale further includes a protective component for protecting the bearing, the protective component including a stationary sealing plate having a protective hole through which the roller shaft passes, the stationary sealing plate being connected to the frame and closing the opening.

[0017] In some embodiments, where the bearing is movable within the mounting cavity along the material conveying direction, the protective hole is an oblong hole that extends along the material conveying direction;

[0018] The protective component also includes a dynamic sealing plate, which has a through hole for the cylinder shaft to pass through. The dynamic sealing plate is slidably engaged with the stationary sealing plate and covers the waist-shaped hole. The dynamic sealing plate is in contact with the end face of the cylinder.

[0019] In some embodiments, the stationary sealing plate is provided with a groove extending along the material conveying direction, and the dynamic sealing plate is slidably fitted within the groove;

[0020] The waist-shaped hole is located at the bottom of the groove.

[0021] In some implementations, it also includes:

[0022] The weighing roller is located inside the belt and is in contact with the upper layer of the belt;

[0023] The detection element is located at the shaft end of the weighing roller and includes a detection box and a weight sensor for measuring the pressure applied by the weighing roller, the weight sensor being disposed inside the detection box.

[0024] The control unit is located near the tail of the belt scale and includes a control box and a controller located within the control box, the controller being electrically connected to the weight sensor.

[0025] In some embodiments, a drive unit is also included for driving one of the two rollers to rotate; the control unit and the drive unit are located on opposite sides of the belt width direction.

[0026] The belt scale provided according to the embodiments of this application includes a frame, rollers, belt, and idlers. The frame includes a frame body and support members. The support members are detachably connected to the frame body. The number of support members is twice the number of idlers. Support members are provided at both ends of the idlers. The two ends of the roller shaft are connected to the corresponding support members. The upper layer of the belt, the idlers, and the frame body are arranged sequentially from top to bottom. The length of the support members along the transport direction is less than the length along the interval height direction.

[0027] Because the roller is mounted to the frame via a support member, and the support member is detachably connected to the frame, the support member can be removed from the frame while remaining connected to the roller during roller removal. There is a gap between the roller and the frame along the height direction, and the length of the support member along the transport direction is less than the length of the gap along the height direction. This means that rotating the support member 90° allows both the support member and the roller to be pulled out together through the gap between the upper belt and the frame, without arching the upper belt or interfering with the upper guide plate. This simplifies the roller removal process and improves roller replacement efficiency. When installing the roller, the two ends of the roller can be connected to the corresponding support member first, then inserted through the gap between the frame and the upper belt. Once in place, the roller and support member can be rotated, and then the support member can be connected to the frame to complete the roller installation.

[0028] The entire process of disassembling the idler roller does not require removing the upper guide plate, nor does it interfere with the guide plate, saving steps and improving work efficiency. Attached Figure Description

[0029] Figure 1 A schematic diagram of the belt conveyor structure is shown in one or more embodiments of this application.

[0030] Figure 2 It shows Figure 1 A magnified view of a section of the belt scale.

[0031] Figure 3 A top view of the belt scale is shown.

[0032] Figure 4 A schematic diagram of the static sealing plate is shown.

[0033] Figure 5 A schematic diagram of the dynamic sealing plate is shown.

[0034] Explanation of reference numerals in the attached figures:

[0035] 100-Belt scale, 110-Frame, 111-Frame body, 112-Support component, 1121-Groove, 120-Roller, 120a-Driven roller, 120b-Drive roller, 121-Cylinder shaft, 122-Cylinder body, 130-Belt, 140-Idler roller, 141-Roller body, 142-Roller shaft, 150-Protective component, 151-Static sealing plate, 1511-Oval hole, 1512-Slide groove, 152-Dynamic sealing plate, 1521-Through hole, 160-Weighing roller, 170-Detection component, 180-Control component, 190-Drive component, 210-Cover body. Detailed Implementation

[0036] To enable those skilled in the art to more clearly understand this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0037] This application provides a belt scale, which makes the disassembly and installation of the weighing idler more convenient and improves work efficiency.

[0038] This application is described below with reference to the accompanying drawings and specific embodiments:

[0039] Please see Figure 1 as well as Figure 2 The belt scale 100 provided in this application embodiment includes a frame 110, a roller 120, a belt 130, and an idler roller 140.

[0040] Frame 110 is the supporting structure of belt scale 100 and serves as the mounting base for rollers 120 and idlers 140. Frame 110 includes a frame 111 and a support member 112. Two rollers 120 are provided, spaced apart along the transport direction. Generally, one roller 120 is a drive roller 120b, and the other is a driven roller 120a. The drive roller 120b is located at the tail of belt scale 100, and the driven roller 120a is located at the head of belt scale 100. Both rollers 120 are rotatably mounted on frame 111. Belt 130 is the structure for transporting materials. It is wound around the two rollers 120, forming a closed loop with an upper and lower layer. Idler 140 is located between the two rollers 120 and contacts the upper layer of belt 130 to support the upper layer of belt 130 and ensure smooth material transport. The idler roller 140 includes a roller shaft 142 and a roller body 141 rotatably mounted outside the roller shaft 142. The roller shaft 142 is fixed, and the roller body 141 rotates as the belt 130 moves.

[0041] The support member 112 is detachably connected to the frame 111. The number of support members 112 is twice the number of idlers 140. Support members 112 are provided at both ends of the idlers 140. The two ends of the roller shaft 142 are connected to the corresponding support members 112. From top to bottom, the upper layer of the belt 130, the idlers 140, and the frame 111 are arranged in sequence. The length of the support member 112 along the transport direction is less than the length of the gap between the upper layer of the belt 130 and the frame 111 in the height direction. Since the roller shaft 142 is installed on the frame 111 through the support member 112, and the support member 112 is detachably connected to the frame 111, the support member 112 can be removed from the frame 111 when the idlers 140 are disassembled, while the support member 112 and the idlers 140 remain connected. Along the height direction, there is a gap between the upper layer of the belt 130 and the frame 111, and the length of the support member 112 along the transport direction is less than the length of the gap in the height direction. That is to say, when the support member 112 is rotated 90°, the support member 112 and the idler roller 140 are pulled out together from the gap between the upper layer of the belt 130 and the frame 111. It is not necessary to arch the upper layer of the belt 130, nor will it interfere with the guide plate above. This simplifies the disassembly steps of the idler roller 140 and improves the replacement efficiency of the idler roller 140.

[0042] The support member 112 can be a support plate, a support frame, or a support block. In some embodiments, the support member 112 is offset from the frame 111 along the width direction of the belt 130. This offset arrangement means that the lower end of the support member 112 can be located inside or outside the frame 111. In other embodiments, the support member 112 can also be located at the top of the frame 111.

[0043] In some embodiments, the upper end of the support member 112 is provided with an upward-facing groove 1121, which extends through the support member 112 along the width direction of the belt 130. Both ends of the roller 142 are disposed within the corresponding grooves 1121. With the grooves 1121 opening upwards and the support member 112 offset from the frame 111, during the removal of the idler roller 140, after removing the support member 112 from the frame 111, the support member 112 can be directly lowered, and then the idler roller 140 can be pulled out separately from the gap between the upper layer of the belt 130 and the frame 111. In other embodiments, the support member 112 may also be provided with connecting holes, with both ends of the roller 142 extending into the corresponding connecting holes, thus achieving the connection between the idler roller 140 and the support member 112.

[0044] In some embodiments, the outer periphery of the roller shaft 142 is provided with an anti-rotation surface, and the groove 1121 cooperates with the shaft segment where the anti-rotation surface is located, so that the roller shaft 142 and the support member 112 do not rotate relative to each other. Two anti-rotation surfaces can be provided, with the two support surfaces cooperating with the two oppositely arranged sidewalls of the groove 1121 to prevent rotation. Alternatively, the end of the roller shaft 142 can also be provided as a rectangular shaft, and the groove 1121 can be a rectangular slot, which can also achieve the anti-rotation function.

[0045] In some embodiments, please refer to Figure 2 The projection of the upper end of the support member 112 along the axial direction of the roller is located within the outline of the idler roller 140. That is, the outer contour of the upper end of the support member 112 is smaller than the outer contour of the roller body 141 of the idler roller 140. During the operation of the belt 130, there may be a deviation where the belt 130 moves towards the support member 112 on one side of the belt 130's width direction, which may cause the belt 130 to rub against the support member 112. Since the projection of the upper end of the support member 112 along the axial direction of the roller is located within the outline of the idler roller 140, this arrangement prevents rubbing against the support member 112 even if the belt 130 deviates from its designated path, thus protecting the belt 130. In a specific implementation, the upper end of the support frame can be set as a semi-circle.

[0046] The support member 112 and the frame 111 can be connected by bolts or by snap-fit; this application does not impose any specific restrictions.

[0047] Please see Figure 1 The belt scale 100 is typically equipped with a cover 210, which is connected to the frame 111 to form a receiving cavity. The idler roller 140, belt 130, and the cylinder 122 of the roller 120 are all housed within this cavity. The falling material passing through the belt scale 100 generates a large amount of dust and water vapor. The cover 210 isolates the internal environment of the belt scale 100 from the external environment, reducing the escape of dust and water vapor, improving the working environment for operators, and reducing the corrosion of external components by dust and water vapor.

[0048] For details on the belt scale 100 as a weighing device, please refer to [link / reference]. Figure 1 It also includes a weighing roller 160, a detection element 170, and a control element 180. The weighing roller 160 is located inside the belt 130 and contacts the upper layer of the belt 130, so that pressure can be applied to the load-bearing roller when the belt 130 carries the material through the weighing roller 160.

[0049] The detection element 170 is located on the shaft section of the load-bearing roller, outside the receiving cavity. The detection element 170 includes a detection housing and a weight sensor for measuring the pressure applied by the load-bearing roller; the weight sensor is disposed within the detection housing. Dust and water vapor can spread from the gap between the shaft end of the load-bearing roller and the frame 110 to the outside of the frame 111, causing corrosion to the weight sensor. The weight sensor is protected from corrosion by dust and water vapor by being housed within the detection housing.

[0050] The control unit 180 is located near the tail end of the belt scale 100 and outside the receiving cavity. Since the idler rollers 140 and weighing rollers of the belt scale 100 require maintenance or replacement, positioning the control unit 180 at the head of the belt scale 100 provides working space for maintenance or replacement of the idler rollers 140 and weighing rollers 160. The control unit 180 includes a control box and a controller located within the control box, the controller being electrically connected to the weight sensor.

[0051] Because the weight sensor and controller are separately located, with the weight sensor and detection box situated in a harsh environment of high moisture and steam, while the controller and control box are located at the head of the belt 130 electronic scale in a less moist and less steamy environment, the controller and control box are less susceptible to corrosion and have a lower failure rate. Compared to a system where the weight sensor and controller are both housed in the same box and located at the shaft end of the weighing roller 160, which is also in a high-moisture and high-steam environment, the separate placement of the control component 180 and detection component 170 reduces the number of parts in harsh environments, thus reducing the number of parts prone to failure. In most cases, when a weighing malfunction occurs, only the weight sensor needs to be checked and maintained to restore the normal operation of the belt 130 electronic scale, eliminating the need to check and maintain both the weight sensor and controller, thereby reducing the workload of operators. In some embodiments, the control component 180 and the drive component 190 are located on opposite sides of the belt 130 in the width direction, facilitating controller placement. In other embodiments, the drive component 190 may also be located on the same side of the belt 130 in the width direction as the control component 180. Both the control box and the detection box can be made of stainless steel, which is corrosion-resistant and has a long service life.

[0052] In some embodiments, the control unit 180 further includes a shielding tube (not shown), with the wiring harness located inside the shielding tube, which is mounted on the frame 110. The shielding tube is a flexible tube. Two detection elements 170 are provided, located at opposite ends of the weighing roller 160, and both weight sensors are electrically connected to the controller.

[0053] In some embodiments, the cylinder shaft 121 of the roller 120 is connected to the frame 111 via a bearing. Generally, the frame 111 has a mounting cavity with an opening on its side, and the mounting cavity communicates with a receiving cavity. A bearing (not shown) is installed in the mounting cavity through the opening, and the cylinder shaft 121 extends into the bearing within the mounting cavity through the opening. The bearing connected to the cylinder shaft 121 of the drive roller 120b is a drive bearing; two drive bearings are provided. Since the position of the cylinder shaft 121 of the drive roller 120b remains unchanged, the position of the drive bearings also remains unchanged. The bearing connected to the cylinder shaft 121 of the driven roller 120a is named a driven bearing; two driven bearings are also provided. The driven bearings can be adjusted in position along the material transport direction under the action of the tensioning device, thereby adjusting the position of the driven roller 120a and achieving tensioning or loosening of the belt 130. For the position adjustment structure of the driven bearing, a tensioning device is generally selected, such as a threaded rod that is threadedly connected to the frame 111, with the end of the threaded rod pressing against the outer ring of the bearing. Since the tensioning device itself is prior art, more details can be found in the prior art disclosures, and will not be elaborated here.

[0054] The belt scale 100 also includes a protective component 150 for protecting the bearing, preventing dust and water vapor from corroding the bearing and extending the bearing's service life.

[0055] In the case of protective element 150 protecting the drive bearing, please refer to Figure 3 as well as Figure 5 The protective component 150 may include a stationary sealing plate 151, which has a protective hole for the cylinder shaft 121 to extend into. The stationary sealing plate 151 is connected to the frame 111 and closes the opening. The stationary sealing plate 151 blocks the opening of the mounting cavity and protects the drive bearing.

[0056] For protection of driven bearings, please refer to [link / reference]. Figure 3 The protective component 150 may include a stationary sealing plate 151 and a dynamic sealing plate 152. The stationary sealing plate 151 has an oblong hole 1511 that extends through the stationary sealing plate 151 along the extending direction of the roller shaft 142 and extends along the material conveying direction. The dynamic sealing plate 152 has a through hole 1521 through which the cylinder shaft 121 passes. The dynamic sealing plate 152 and the stationary sealing plate 151 are slidably fitted to accommodate the position adjustment requirements of the driven roller 120a and the driven bearing. The dynamic sealing plate 152 covers the oblong hole 1511 and fits against the end face of the cylinder 122 to achieve a seal and protect the bearing.

[0057] To improve the stability of the relative sliding between the static sealing plate 151 and the dynamic sealing plate 152, please refer to... Figure 3 as well as Figure 4The stationary sealing plate 151 is provided with a chute 1512 extending along the material conveying direction, and the dynamic sealing plate 152 is slidably fitted in the chute 1512; the oblong hole 1511 is located at the bottom of the chute 1512. Both the stationary sealing plate 151 and the dynamic sealing plate 152 can be made of stainless steel, which is not easy to corrode and has a long service life.

[0058] The belt scale 100 may also include a purging assembly (not shown), which includes an air source and a purging pipe for blowing air onto the shaft end of the weighing roller 160. An electrically controlled valve is mounted on the purging pipe and is electrically connected to a controller. Blowing air onto the shaft end of the weighing roller 160 via the purging pipe reduces the amount of dust and water vapor entering the detection box. The belt scale 100 may also include two alignment rollers located on either side of the belt 130, which are vertically rotatable.

[0059] This application features a detachable support 112 and frame 111, facilitating maintenance or replacement of the idler roller 140 and improving efficiency. A protective element 150 protects the driven bearing installed within the frame 111, improving the bearing's sealing effect, protecting it from dust and high-temperature water vapor corrosion, and extending its service life. The control element 180 and the detection element 170 are designed as separate structures, reducing the risk of corrosion to the controller and extending its service life.

[0060] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0061] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0062] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0063] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0064] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A belt scale, characterized in that, include: A frame, including a frame body and supporting members, wherein the supporting members are detachably connected to the frame body; Two rollers are provided, which are spaced apart along the transport direction and rotatably mounted on the frame. A belt is wound around the two rollers; An idler roller is located between the two rollers and in contact with the upper layer of the belt; the idler roller includes a roller shaft and a roller body rotatably mounted outside the roller shaft; The number of support members is twice the number of idlers. Each idler has a support member at both ends. Both ends of the roller shaft are connected to the corresponding support members. From top to bottom, the upper layer of the belt, the idlers, and the frame are arranged in sequence. The length of the support member along the transport direction is less than the length of the gap between the upper layer of the belt and the frame in the height direction.

2. The belt scale according to claim 1, characterized in that, Along the width direction of the belt, the support member is offset from the frame, and the upper end of the support member is provided with an upward-facing groove, and the two ends of the roller are disposed in the corresponding grooves.

3. The belt scale according to claim 2, characterized in that, The outer circumference of the roller shaft is provided with an anti-rotation surface, and the groove is engaged with the shaft section where the anti-rotation surface is located.

4. The belt scale according to any one of claims 1-3, characterized in that, The upper end of the support member is projected along the axial direction of the roller shaft within the outline of the idler roller.

5. The belt scale according to any one of claims 1-3, characterized in that, The support member is screwed to the frame.

6. The belt scale according to any one of claims 1-3, characterized in that, The roller shaft is connected to the frame via a bearing. The frame is provided with an open mounting cavity, and the bearing is located inside the mounting cavity. The belt scale also includes a protective component for protecting the bearing. The protective component includes a stationary sealing plate with a protective hole for the cylindrical shaft to pass through. The stationary sealing plate is connected to the frame and closes the opening.

7. The belt scale according to claim 6, characterized in that, When the bearing is movable within the mounting cavity along the transport direction, the protective hole is an oblong hole that extends along the transport direction; The protective component also includes a dynamic sealing plate, which has a through hole for the cylinder shaft to pass through. The dynamic sealing plate is slidably engaged with the stationary sealing plate and covers the waist-shaped hole. The dynamic sealing plate is in contact with the end face of the cylinder body of the roller.

8. The belt scale according to claim 7, characterized in that, The stationary sealing plate is provided with a groove extending along the transport direction, and the dynamic sealing plate is slidably fitted in the groove; The waist-shaped hole is located at the bottom of the groove.

9. The belt scale according to any one of claims 1-3, characterized in that, Also includes: The weighing roller is located inside the belt and is in contact with the upper layer of the belt; The detection element is located at the shaft end of the weighing roller and includes a detection box and a weight sensor for measuring the pressure applied by the weighing roller, the weight sensor being disposed inside the detection box. The control unit is located near the tail of the belt scale and includes a control box and a controller located within the control box, the controller being electrically connected to the weight sensor.

10. The belt scale according to claim 9, characterized in that, It also includes a drive unit for driving one of the two rollers to rotate; the control unit and the drive unit are located on opposite sides of the belt width direction.

Images