Weighing device with continuous feeding function

Abstract

The utility model discloses a weighing device with a continuous feeding function, which relates to the technical field of belt weighing feeders and comprises a belt weighing feeder composed of a frame body and a weighing belt, and a scraping assembly. According to the utility model, through the arrangement of the scraping assembly, in the operation process of the weighing belt, the top of the scraping plate is attached to the bottom of the turning part of the discharging end of the weighing belt, and residual materials on the weighing belt can be scraped off by the scraping plate, so that the accuracy of the conveying weight of the materials is improved while the residual materials are avoided; an electric push rod is started, a scraping plate can be driven to perform circumferential operation through transmission of a cross-shaped connecting rod, a rotating arm, an arc-shaped sliding block and a connecting rod, and the scraping plate which performs circumferential operation can perform wall scraping operation on the outer wall of the turning position of the discharging end of the weighing belt, so that residual materials on the surface of the turning position of the discharging end of the weighing belt are scraped and fall off; therefore, the weight precision of the materials which are conveyed by the weighing belt and fall off is more accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of belt weighing feeders, in particular to a weighing device with a continuous feeding function. Background Art

[0002] Belt weighing feeder is a special dynamic metering equipment for continuous weighing, batch feeding and batching of various bulk, granular and powdery materials. It is widely used in building materials, cement, chemical, coal, mining, metallurgy, food, feed, port, electricity, coking, environmental protection and other industries.

[0003] The working principle of the belt weighing feeder is as follows: the weight signal of the material on the belt and the speed signal of the belt are transmitted to the microprocessor controller together, which automatically calculates the instantaneous flow rate of the material. By continuously comparing the set flow rate and the actual flow rate, the speed of the belt is adjusted to keep the actual material flow rate at the set flow rate value.

[0004] When conveying some wet materials through a belt weighing feeder, because the wet materials have a certain viscosity, some of them will remain on the belt during the conveying process, which will affect the weighing accuracy of the wet materials during the conveying process. Generally, a scraper plate is installed on the belt feeder to scrape off the residual wet materials on the belt, thereby improving the weighing accuracy of the wet materials.

[0005] However, when the belt feeder stops running, some wet material remains at the turning point of the conveying end of the belt, which causes the weight of the wet material finally conveyed to be less than the set weight. In order to avoid this situation, a weighing device with a continuous feeding function is provided. Utility Model Content

[0006] The purpose of the utility model is to provide a weighing device with a continuous feeding function in order to solve the above-mentioned problems.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a weighing device with a continuous feeding function, comprising a belt weighing feeder composed of a frame body and a weighing belt, wherein the weighing belt is installed on the inner side of the frame body, and a scraping assembly extending to below the discharge end of the weighing belt is arranged on the outer side of the frame body, and the scraping assembly is used to scrape the wet material remaining on the weighing belt;

[0008] The scraper assembly includes a scraper unit and a driving unit;

[0009] When the scraper unit is distributed below the discharge end of the weighing belt, it is used to scrape the residual wet material on the weighing belt in operation;

[0010] When the weighing belt stops running, the driving unit drives the scraper plate in the scraper unit to rotate, so as to scrape the residual wet material at the turning point of the discharging end of the weighing belt.

[0011] As a further solution of the utility model: the scraper unit includes an L-shaped fixing plate, an arc-shaped rail groove, a scraper plate, a connecting rod, and an arc-shaped slider;

[0012] The L-shaped fixing plate is symmetrically fixed on both sides of one end of the frame body and close to the discharge end of the weighing belt, and the arc-shaped rail groove is opened on the side of the L-shaped fixing plate and passes through both sides of the L-shaped fixing plate;

[0013] The scraper plates are distributed below the discharging end of the weighing belt, the connecting rods are symmetrically fixed on both sides of the bottom of the scraper plates, and the arc-shaped sliders are fixed on the sides of the two connecting rods away from the scraper plates and are slidably connected to the two arc-shaped rail grooves respectively;

[0014] The top of the scraper plate is attached to the bottom of the turning part of the discharging end of the weighing belt, so as to realize the scraping operation of the residual wet material on the weighing belt in the running state.

[0015] As a further solution of the utility model: the driving unit includes a rotating arm, a cross-shaped slide groove, a cross-shaped connecting rod, and an electric push rod;

[0016] The rotating arm is rotatably connected to one side of the outer wall of the frame body, and the bottom of the rotating arm is fixedly connected to the side of an arc-shaped sliding block, and the cross-shaped sliding groove is opened at the top of the rotating arm;

[0017] The cross-shaped connecting rod is slidably connected to the inner side of the cross-shaped slide groove, the tail of the electric push rod housing is rotatably connected to one side of the outer wall of the frame body, and the output end of the electric push rod is fixedly connected to one end of the cross-shaped connecting rod;

[0018] The electric push rod is used to drive the rotating arm to rotate to realize the circular rotation of the scraper plate, and the circularly rotating scraper plate realizes the scraping operation of the outer wall of the turning point at the output end of the stopped weighing belt.

[0019] As a further solution of the utility model: the center of the arc-shaped rail groove coincides with the center of the arc-shaped slider, the rotation center of the rotating arm and the turning center point of the output end of the weighing belt.

[0020] As a further solution of the utility model: a fixing pin for providing a rotation support point for the rotating arm and the electric push rod is fixedly connected to the outer wall side of the frame body, and the horizontal height of the fixing pin connected to the electric push rod is lower than the horizontal height of the fixing pin connected to the rotating arm.

[0021] Compared with the prior art, the beneficial effects of the utility model are:

[0022] By setting up a scraper assembly, during the operation of the weighing belt, the top of the scraper plate is attached to the bottom of the turning part of the discharging end of the weighing belt, and the residual material on the weighing belt will be scraped off by the scraper plate, thereby avoiding material residue and improving the accuracy of material conveying weight. When the weighing belt stops running, the electric push rod is started, and the scraper plate can be driven to perform circular operation through the cross-type connecting rod, rotating arm, arc-shaped slider and connecting rod transmission. The circularly operating scraper plate can scrape the outer wall of the turning part of the discharging end of the weighing belt, so that the residual material on the surface of the turning part of the discharging end of the weighing belt is scraped off, so that the weight accuracy of the material dropped by the weighing belt can be more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the utility model;

[0024] Figure 2 This is a structural schematic diagram of another viewing angle of the utility model;

[0025] Figure 3 This is a schematic diagram of the disassembly of the scraper assembly of the utility model;

[0026] Figure 4 For the utility model Figure 3 Enlarged view of position A in the middle.

[0027] In the figure: 1. belt weighing feeder; 101. frame body; 102. weighing belt; 2. scraper assembly; 201. L-shaped fixing plate; 202. arc-shaped rail groove; 203. scraper plate; 204. connecting rod; 205. arc-shaped slider; 206. rotating arm; 207. cross-shaped slide groove; 208. cross-shaped connecting rod; 209. electric push rod. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See also Figures 1 to 4 In an embodiment of the utility model, a weighing device with a continuous feeding function includes a belt weighing feeder 1 composed of a frame body 101 and a weighing belt 102. The weighing belt 102 is installed on the inner side of the frame body 101. The outer side of the frame body 101 is provided with a scraping assembly 2 extending to below the discharge end of the weighing belt 102. The scraping assembly 2 is used to scrape the wet material remaining on the weighing belt 102;

[0030] The scraper assembly 2 includes a scraper unit and a driving unit;

[0031] When the scraper unit is distributed below the discharge end of the weighing belt 102, it is used to scrape the residual wet material on the weighing belt 102 in the running state;

[0032] When the weighing belt 102 stops running, the driving unit drives the scraper plate 203 in the scraper unit to rotate, so as to scrape the residual wet material at the turning point of the discharge end of the weighing belt 102;

[0033] The scraper unit includes an L-shaped fixing plate 201, an arc-shaped rail groove 202, a scraper plate 203, a connecting rod 204, and an arc-shaped slider 205;

[0034] The L-shaped fixing plate 201 is symmetrically fixed on both sides of one end of the frame body 101 and close to the discharge end of the weighing belt 102. The arc-shaped rail groove 202 is opened on the side of the L-shaped fixing plate 201 and passes through both sides of the L-shaped fixing plate 201.

[0035] The scraper plate 203 is distributed below the discharge end of the weighing belt 102, the connecting rods 204 are symmetrically fixed on both sides of the bottom of the scraper plate 203, and the arc-shaped sliders 205 are fixed on the side of the two connecting rods 204 away from the scraper plate 203 and are slidably connected to the two arc-shaped rail grooves 202 respectively;

[0036] The top of the scraper plate 203 is attached to the bottom of the turning point of the discharging end of the weighing belt 102, and is used to scrape the residual wet material on the weighing belt 102 in the running state;

[0037] The driving unit includes a rotating arm 206, a cross-shaped slide 207, a cross-shaped connecting rod 208, and an electric push rod 209;

[0038] The rotating arm 206 is rotatably connected to one side of the outer wall of the frame body 101, and the bottom of the rotating arm 206 is fixedly connected to the side of an arc-shaped slider 205, and a cross-shaped slide groove 207 is provided at the top of the rotating arm 206;

[0039] The cross-shaped connecting rod 208 is slidably connected to the inner side of the cross-shaped slide groove 207, the rear end of the electric push rod 209 is rotatably connected to one side of the outer wall of the frame body 101, and the output end of the electric push rod 209 is fixedly connected to one end of the cross-shaped connecting rod 208;

[0040] The electric push rod 209 drives the rotating arm 206 to rotate to realize the circular rotation of the scraper plate 203. The circularly rotating scraper plate 203 realizes the outer wall scraping operation at the turning point of the output end of the stopped weighing belt 102.

[0041] In this embodiment: it is necessary to add that: a conveying roller for conveying the weighing belt 102 and a metering roller for detecting the weight above the weighing belt 102 are arranged inside the frame body 101. When the material passes through, the metering roller detects the material weight of the weighing belt 102 and acts on the weighing sensor through a lever to generate a voltage signal proportional to the belt load. The speed sensor is directly connected to the large-diameter conveying roller to provide a series of pulses, each pulse represents a belt motion unit, and the frequency of the pulse is proportional to the belt speed. The weighing instrument receives signals from the weighing sensor and the speed sensor, obtains an instantaneous flow value and a cumulative weight value through integral calculation, and displays them respectively. The above structure is a prior art structure, so it is not elaborated on.

[0042] During the operation of the weighing belt 102, the scraper plate 203 is located below the weighing belt 102, and the top of the scraper plate 203 is in contact with the bottom of the turning point at the discharge end of the weighing belt 102. In this way, after the weighing belt 102 drives the material to be transported and dropped, the material remaining on the weighing belt 102 will be scraped off by the scraper plate 203, thereby avoiding material residue and improving the accuracy of the material transport weight.

[0043] When the weighing belt 102 stops running, if there is residual material on the outer wall of the turning part of the discharging end of the weighing belt 102, it will cause the weight error of the discharged material. At this time, the electric push rod 209 can be started, the electric push rod 209 runs and shrinks, and pulls the rotating arm 206 to rotate through the cross-shaped connecting rod 208. The sliding connection structure of the cross slide 207 and the cross-shaped connecting rod 208 is used to ensure the transmission stability between the output end of the electric push rod 209 and the rotating arm 206;

[0044] The rotating rotating arm 206 drives the arc-shaped slider 205 to move along the trajectory of the arc-shaped rail groove 202. The arc-shaped slider 205 drives the scraper plate 203 to operate in a circle through the connecting rod 204. The scraper plate 203 that operates in a circle can scrape the outer wall of the turning part of the discharge end of the weighing belt 102, so that the residual material on the surface of the turning part of the discharge end of the weighing belt 102 is scraped and falls, and part of the material will fall on the scraper plate 203. Then, the electric push rod 209 is operated and reset, so that the scraper plate 203 is reset to the initial state. At this time, the material falling on the scraper plate 203 will also fall. Through the cooperation of the above multiple parts, the weight accuracy of the material transported and dropped by the weighing belt 102 can be made more accurate.

[0045] Please refer to Figures 1 to 3 , the center of the arc-shaped rail groove 202 coincides with the center of the arc-shaped slider 205, the rotation center of the rotating arm 206, and the turning center point of the output end of the weighing belt 102;

[0046] A fixing pin for providing a rotation support point for the rotating arm 206 and the electric push rod 209 is fixedly connected to the outer wall side of the frame body 101, and the horizontal height of the fixing pin connected to the electric push rod 209 is lower than the horizontal height of the fixing pin connected to the rotating arm 206.

[0047] In this embodiment: through this structure, when the scraper plate 203 runs in a circular motion, the top of the scraper plate 203 is always in contact with the surface of the weighing belt 102, thereby achieving a scraping operation on the surface of the weighing belt 102 at the turning point;

[0048] The structure in which the horizontal height of the fixing pin connected to the electric push rod 209 is lower than the horizontal height of the fixing pin connected to the rotating arm 206 is used to enable the rotating angle of the rotating arm 206 to meet the flipping angle requirement of the scraper plate 203 .

[0049] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A weighing device with a continuous feeding function, comprising a belt weighing feeder (1) consisting of a frame body (101) and a weighing belt (102), wherein the weighing belt (102) is installed inside the frame body (101), characterized in that: A scraper assembly (2) extending below the discharge end of the weighing belt (102) is arranged on the outer side of the frame body (101), and the scraper assembly (2) is used to scrape the wet material remaining on the weighing belt (102); The scraper assembly (2) comprises a scraper unit and a drive unit; When the scraping unit is distributed below the discharge end of the weighing belt (102), it is used to scrape the residual wet material on the weighing belt (102) in a running state; When the weighing belt (102) stops running, the driving unit drives the scraper plate (203) in the scraper unit to rotate, so as to scrape the residual wet material at the turning point of the discharge end of the weighing belt (102).

2. A weighing device with continuous feeding function according to claim 1, characterized in that: The scraper unit comprises an L-shaped fixing plate (201), an arc-shaped rail groove (202), a scraper plate (203), a connecting rod (204), and an arc-shaped sliding block (205); The L-shaped fixing plate (201) is symmetrically fixed to both sides of one end of the frame body (101) and close to the discharge end of the weighing belt (102), and the arc-shaped track groove (202) is opened on the side of the L-shaped fixing plate (201) and passes through both sides of the L-shaped fixing plate (201); The scraper plate (203) is distributed below the discharge end of the weighing belt (102), the connecting rods (204) are symmetrically fixed on both sides of the bottom of the scraper plate (203), and the arc-shaped sliders (205) are fixed on the side of the two connecting rods (204) away from the scraper plate (203) and are respectively slidably connected to the two arc-shaped rail grooves (202); The top of the scraper plate (203) is attached to the bottom of the turning point of the discharge end of the weighing belt (102), and is used to scrape the residual wet material on the weighing belt (102) in the running state.

3. A weighing device with continuous feeding function according to claim 2, characterized in that: The driving unit comprises a rotating arm (206), a cross-shaped sliding groove (207), a cross-shaped connecting rod (208), and an electric push rod (209); The rotating arm (206) is rotatably connected to one side of the outer wall of the frame body (101), and the bottom of the rotating arm (206) is fixedly connected to the side of an arc-shaped sliding block (205), and the cross-shaped sliding groove (207) is opened at the top of the rotating arm (206); The cross-shaped connecting rod (208) is slidably connected to the inner side of the cross-shaped sliding groove (207), the rear end of the housing of the electric push rod (209) is rotatably connected to one side of the outer wall of the frame body (101), and the output end of the electric push rod (209) is fixedly connected to one end of the cross-shaped connecting rod (208); The electric push rod (209) drives the rotating arm (206) to rotate to realize the circular rotation of the scraper plate (203). The circularly rotating scraper plate (203) realizes the scraping operation of the outer wall at the turning point of the output end of the stopped weighing belt (102).

4. A weighing device with continuous feeding function according to claim 3, characterized in that: The center of the arc-shaped track groove (202) coincides with the center of the arc-shaped slider (205), the rotation center of the rotating arm (206), and the turning center point of the output end of the weighing belt (102).

5. A weighing device with continuous feeding function according to claim 3, characterized in that: A fixing pin for providing a rotation support point for the rotating arm (206) and the electric push rod (209) is fixedly connected to the outer wall side of the frame body (101), and the horizontal height of the fixing pin connected to the electric push rod (209) is lower than the horizontal height of the fixing pin connected to the rotating arm (206).

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