Linear trace additive quantity control equipment

Abstract

The utility model relates to the technical field of accurate metering and control of trace additives in the industries of chemical engineering, building materials and the like, in particular to linear trace additive quantity control equipment which comprises a rack, limiting rods are welded to the four corners of the top of the rack, connecting plates are movably arranged on the surfaces of the limiting rods in a sleeved mode, and hoppers are welded to the inner walls of the connecting plates. The hopper and the discharging mechanism serve as the whole scale body, the weighing sensor continuously samples weight signals of the scale body, the change ratio of the weight in unit time is calculated and serves as the instantaneous flow rate, the controller receives the weight signals transmitted by the weighing sensor, the instantaneous flow rate is calculated, and the instantaneous flow rate is calculated. And closed-loop adjustment of the flow is achieved by controlling the frequency of a motor in the discharging mechanism, the controller automatically adjusts the rotating speed of the discharging mechanism according to the deviation between a set value and the actual detection flow of the electromagnetic flow valve, and it is ensured that the adding amount of the additive is accurately controlled within the preset range.

Description

TECHNICAL FIELD

[0001] The utility model relates to the accurate metering and control technology field of trace additive of chemical industry, building material and the industry, specifically to a linear trace additive control equipment. BACKGROUND

[0002] In the production process of chemical industry and building material, it is often necessary to accurately add various trace additives to adjust the characteristics and quality of products.

[0003] Through research and analysis, it is found that the additive control on the market still has the following shortcomings to some extent.

[0004] For example, the addition method is usually manual separate weighing and feeding, single pipe screw conveyor metering, etc., which has the problems of low precision, complicated operation and high labor cost, especially when adding trace additives, the error is required to be smaller, and the traditional metering method is difficult to meet the high precision requirement, in order to solve the above technical problems, we design a linear trace additive control equipment. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a linear trace additive control equipment, which has the advantages of high precision and automation, and solves the problems of low precision, complicated operation and high labor cost of the addition method, especially when adding trace additives, the error is required to be smaller, and the traditional metering method is difficult to meet the high precision requirement.

[0006] In order to achieve the above purpose, the utility model provides the following technical scheme: a linear trace additive control equipment, comprising a rack, a limiting rod is welded at the top of the four corners of the rack, a connecting plate is movably sleeved on the surface of the limiting rod, a hopper is welded on the inner wall of the connecting plate, a cover plate is fixedly connected on the top of the hopper through bolts and nuts, a weighing sensor is fixedly installed on the four sides of the top of the rack, a discharging mechanism is installed at the bottom of the hopper, and a poking mechanism is installed on the surface of the cover plate.

[0007] The discharging mechanism comprises a discharging cylinder, a rotating rod, a motor and a spiral blade one, the poking mechanism comprises a vertical rod, a spiral blade two, a poking rod, a fixed block, a worm, a worm wheel, a belt disc and a belt, the left end of the discharging cylinder is communicated with an electromagnetic flow valve, and the front left side of the rack is fixedly installed with a controller through bolts.

[0008] Preferably, the right side of the top of the discharging cylinder is communicated with the lower end of the hopper, one end of the rotating rod is rotatably embedded in the right side of the discharging cylinder through a bearing, the spiral blade one is sleeved and welded on the surface of the rotating rod at one end in the inner cavity of the discharging cylinder, the top of the motor is fixedly connected with the surface of the hopper through a support plate, and the rotating shaft of the motor is fixedly connected with the right end of the rotating rod.

[0009] Preferably, the upper end of the vertical rod is rotatably embedded in the top of the cover plate through a bearing and fixedly connected to the bottom of the worm gear, the two sets of spiral blades are welded to the surface of the vertical rod at one end of the hopper cavity, and the two ends of the shift rod close to the vertical rod are welded to the surface of the vertical rod.

[0010] Preferably, the bottom of the fixing block is welded to the right side of the top of the cover plate, the left end of the worm is rotatably embedded in the left side of the fixing block through a bearing, and the worm is engaged with the worm wheel.

[0011] Preferably, there are two belt pulleys, which are fixedly sleeved on the surfaces of the worm and the right end of the rotating rod respectively, and the belt transmission is sleeved on the surfaces of the two belt pulleys.

[0012] Preferably, the front side of the top of the cover plate is connected to a feeding pipe, and the front side of the hopper is fixedly embedded with a window.

[0013] Preferably, the top of the weighing sensor contacts the bottom of the connecting plate, and the controller is electrically connected to the motor, the weighing sensor and the electromagnetic flow valve respectively.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] The utility model uses the hopper and the discharge mechanism as the entire scale body, continuously samples the weight signal of the scale body through the weighing sensor, calculates the weight change ratio per unit time as the instantaneous flow rate, and realizes closed-loop regulation of the flow rate by controlling the motor frequency in the discharge mechanism. The controller automatically adjusts the rotation speed of the discharge mechanism according to the deviation between the set value and the actual flow detected by the electromagnetic flow valve, ensuring that the amount of additive added is accurately controlled within a predetermined range. The utility model adopts the weight loss metering principle, combines the high-precision weighing sensor and the intelligent control system, and realizes the accurate metering of trace additives.

[0016] The utility model controls the operation of the motor to rotate the rotating rod, the belt pulley thereon and the spiral blade one, and the worm and the belt pulley thereon rotate under the transmission of the belt, and then the rotation of the worm wheel drives the rotation of the vertical rod, the spiral blade two and the shifting rod. Under the rotation action of the spiral blade two, the shifting rod and the spiral blade one, the utility model has the advantage of being able to prevent the discharge and addition of materials from being blocked, and effectively avoids the trace additives in the hopper from being accumulated and blocked in large quantities at the lower end of the hopper, so as to prevent the normal controlled addition from being affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 This is a left-side perspective diagram of the present invention;

[0019] Figure 3 It is a partially cutaway perspective schematic diagram of the present invention.

[0020] In the figure: 1. Frame; 2. Limit rod; 3. Connecting plate; 4. Hopper; 5. Cover plate; 6. Weighing sensor; 7. Unloading mechanism; 71. Discharging barrel; 72. Rotating rod; 73. Motor; 74. Spiral blade 1; 8. Toggle mechanism; 81. Vertical rod; 82. Spiral blade 2; 83. Toggle rod; 84. Fixed block; 85. Worm; 86. Worm gear; 87. Belt pulley; 88. Belt; 9. Solenoid flow valve; 10. Controller; 11. Feeding pipe. DETAILED DESCRIPTION

[0021] See also Figures 1-3 A linear trace additive control device includes a frame 1, with limit rods 2 welded to the four corners of the top of the frame 1, a connecting plate 3 is movably sleeved on the surface of the limit rod 2, a hopper 4 is welded to the inner wall of the connecting plate 3, the top of the hopper 4 is fixedly connected to a cover plate 5 by bolts and nuts, weighing sensors 6 are fixedly installed on the four sides of the top of the frame 1, a feeding mechanism 7 is installed at the bottom of the hopper 4, and a toggle mechanism 8 is installed on the surface of the cover plate 5;

[0022] The unloading mechanism 7 includes a discharge barrel 71, a rotating rod 72, a motor 73 and a spiral blade 1 74. The toggle mechanism 8 includes a vertical rod 81, a spiral blade 2 82, a toggle rod 83, a fixed block 84, a worm 85, a worm gear 86, a pulley 87 and a belt 88. The left end of the discharge barrel 71 is connected to an electromagnetic flow valve 9, and a controller 10 is fixed to the left side of the front of the frame 1 by bolts.

[0023] See also Figure 1 and Figure 3 The right side of the top of the discharge barrel 71 is connected to the lower end of the hopper 4, and one end of the rotating rod 72 is rotatably embedded in the right side of the discharge barrel 71 through a bearing. The spiral blade 74 is sleeved and welded on the surface of the rotating rod 72 at one end of the inner cavity of the discharge barrel 71. By setting the spiral blade 74, the additives entering the discharge barrel 71 are transported and discharged under the action of its rotation. The top of the motor 73 is fixedly connected to the surface of the hopper 4 through a support plate, and the rotating shaft of the motor 73 is fixedly connected to the right end of the rotating rod 72.

[0024] See also Figure 2 and Figure 3The upper end of the vertical rod 81 is rotatably embedded in the top of the cover plate 5 through a bearing and is fixedly connected to the bottom of the worm gear 86. The second spiral blade 82 is sleeved and welded on the surface of the vertical rod 81 at one end of the inner cavity of the hopper 4. By providing the second spiral blade 82, the additive in the hopper 4 is better dropped into the discharge barrel 71 under the action of its rotation. The two ends of the shifting rod 83 close to the vertical rod 81 are welded to the surface of the vertical rod 81. By providing the shifting rod 83, the additive on the inner wall of the hopper 4 can be scraped off under the action of its rotation, and the discharge port at the lower end of the hopper 4 can be shifted at the same time, effectively avoiding clogging of the additive when the lower end of the hopper 4 is discharged.

[0025] See also Figure 2 and Figure 3 The bottom of the fixed block 84 is welded to the right side of the top of the cover plate 5, and the left end of the worm 85 is rotatably embedded in the left side of the fixed block 84 through a bearing. By setting a worm wheel 86, the worm 85 can drive it to rotate when it rotates, and then drive the vertical rod 81 to rotate, and the worm 85 is engaged with the worm wheel 86.

[0026] See also Figure 1 and Figure 3 There are two belt pulleys 87, which are fixedly mounted on the surfaces of the worm 85 and the right end of the rotating rod 72 respectively. The belt 88 is driven on the surfaces of the two belt pulleys 87. By setting the belt pulleys 87 and the belt 88, when the motor 73 drives the rotating rod 72 to rotate, it can simultaneously drive the worm 85 to rotate, and then drive the worm wheel 86 and the vertical rod 81 to rotate.

[0027] See also Figure 1 and Figure 2 The front side of the top of the cover plate 5 is connected to a feeding pipe 11, and the front of the hopper 4 is fixedly embedded with a window. By setting the window, it is easy to observe the amount of additives in the hopper 4.

[0028] See also Figure 1 The top of the weighing sensor 6 contacts the bottom of the connecting plate 3. By setting the weighing sensor 6, the weight signals of the hopper 4 and the unloading mechanism 7 are continuously sampled. The controller 10 is electrically connected to the motor 73, the weighing sensor 6 and the electromagnetic flow valve 9 respectively.

[0029] When in use, the hopper 4 and the discharge mechanism 7 are used as the entire scale body, and the weighing sensor 6 continuously samples the weight signal of the scale body, and calculates the weight change ratio per unit time as the instantaneous flow rate. The controller 10 receives the weight signal transmitted by the weighing sensor 6, calculates the "instantaneous flow rate", and realizes closed-loop regulation of the flow rate by controlling the frequency of the motor 73 in the discharge mechanism 7. The controller 10 automatically adjusts the speed of the discharge mechanism 7 according to the deviation between the set value and the actual flow rate detected by the electromagnetic flow valve 9, ensuring that the amount of additive added is accurately controlled within the predetermined range. The weight loss metering principle is adopted, combined with high The precision weighing sensor 6 and the intelligent control system realize the precise measurement of trace additives. By controlling the operation of the motor 73, the rotating rod 72 and the belt pulley 87 thereon and the spiral blade 1 74 rotate. Under the transmission of the belt 88, the worm 85 and the belt pulley 87 thereon rotate, and then the worm wheel 86 rotates to drive the rotation of the vertical rod 81, the spiral blade 2 82 and the shift lever 83. Under the rotation of the spiral blade 2 82, the shift lever 83 and the spiral blade 1 74, the material addition can be prevented from being blocked, and the trace additives in the hopper 4 can be effectively prevented from accumulating and clogging at the lower end of the hopper 4, thereby preventing the normal controlled addition from being affected.

[0030] In summary: the linear trace additive quantity control equipment, through the frame 1, limit rod 2, connecting plate 3, hopper 4, cover plate 5, weighing sensor 6, unloading mechanism 7, toggle mechanism 8, electromagnetic flow valve 9 and controller 10, solves the problem that the addition method is usually manual weighing and feeding, single-tube screw conveyor metering, etc., especially when adding trace additives, the error is required to be smaller, and the traditional metering method is difficult to meet the high precision requirements.

Claims

1. A linear trace additive control device, comprising a frame (1), characterized in that: The four corners of the top of the frame (1) are welded with limit rods (2), the surface of the limit rod (2) is movably sleeved with a connecting plate (3), the inner wall of the connecting plate (3) is welded with a hopper (4), the top of the hopper (4) is fixedly connected to a cover plate (5) by bolts and nuts, weighing sensors (6) are fixedly installed on the four sides of the top of the frame (1), a feeding mechanism (7) is installed at the bottom of the hopper (4), and a toggle mechanism (8) is installed on the surface of the cover plate (5); The unloading mechanism (7) includes a discharge barrel (71), a rotating rod (72), a motor (73) and a spiral blade (74); the shifting mechanism (8) includes a vertical rod (81), a spiral blade (82), a shifting rod (83), a fixed block (84), a worm (85), a worm wheel (86), a belt pulley (87) and a belt (88); the left end of the discharge barrel (71) is connected to an electromagnetic flow valve (9); and a controller (10) is fixed to the left side of the front of the frame (1) by bolts.

2. The linear trace additive control device according to claim 1, characterized in that: The right side of the top of the discharge barrel (71) is connected to the lower end of the hopper (4), one end of the rotating rod (72) is rotatably embedded in the right side of the discharge barrel (71) through a bearing, and the spiral blade (74) is sleeved and welded on the surface of the rotating rod (72) at one end of the inner cavity of the discharge barrel (71). The top of the motor (73) is fixedly connected to the surface of the hopper (4) through a support plate, and the rotating shaft of the motor (73) is fixedly connected to the right end of the rotating rod (72).

3. The linear trace additive control device according to claim 1, characterized in that: The upper end of the vertical rod (81) is rotatably mounted on the top of the cover plate (5) through a bearing and is fixedly connected to the bottom of the worm gear (86). The second spiral blade (82) is sleeved and welded to the surface of the vertical rod (81) at one end of the inner cavity of the hopper (4). Both ends of the shifting rod (83) close to the vertical rod (81) are welded to the surface of the vertical rod (81).

4. The linear trace additive control device according to claim 1, characterized in that: The bottom of the fixed block (84) is welded to the right side of the top of the cover plate (5), and the left end of the worm (85) is rotatably embedded in the left side of the fixed block (84) through a bearing, and the worm (85) is engaged with the worm wheel (86).

5. The linear trace additive control device according to claim 1, characterized in that: There are two belt pulleys (87), which are respectively fixedly sleeved on the surfaces of the worm (85) and the right end of the rotating rod (72), and the belt (88) is driven sleeved on the surfaces of the two belt pulleys (87).

6. The linear trace additive control device according to claim 1, characterized in that: The front side of the top of the cover plate (5) is connected to a feeding pipe (11), and the front of the hopper (4) is fixedly inlaid with a viewing window.

7. The linear trace additive control device according to claim 1, characterized in that: The top of the weighing sensor (6) contacts the bottom of the connecting plate (3), and the controller (10) is electrically connected to the motor (73), the weighing sensor (6) and the electromagnetic flow valve (9), respectively.

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