Cement water-reducing agent adding device

Abstract

This invention relates to the field of cement water-reducing agent addition technology, specifically disclosing a feeding device for cement water-reducing agent addition, comprising: a tank and a support frame, the support frame being fixedly connected to the top of the tank; further comprising: a stirring mechanism disposed inside the tank, the stirring mechanism being used to stir the liquid cement water-reducing agent in the tank; a discharge mechanism disposed inside the tank, the discharge mechanism being used to discharge the agent raw material in the tank; a monitoring mechanism disposed between the tank and the support frame, the monitoring mechanism being used to monitor the eddy state of the liquid during discharge when the discharge mechanism discharges the agent; and an adjusting mechanism disposed on the top of the support frame. This invention has at least the following beneficial effects: through the stirring mechanism, the agent added to the tank can be mixed and stirred, thereby avoiding the problems of raw material sedimentation, stratification, and uneven concentration that occur when the liquid water-reducing agent is left to stand for a long time.

Description

Technical Field

[0001] This invention relates to the field of cement water-reducing agent addition technology, specifically to a feeding device for adding cement water-reducing agents. Background Technology

[0002] Cement water-reducing agent is a key admixture in the concrete preparation process. It can effectively reduce the amount of water used in concrete mixing and improve the density and compressive strength of concrete. On automated concrete production lines, special feeding equipment is required to complete the precise quantitative addition and unloading of acid, alkali, functional monomers and liquid water-reducing agent raw materials. Currently, the mainstream cement water-reducing agent feeding equipment on the market uses PP / PE corrosion-resistant plastic tanks or stainless steel tanks as storage tanks, and is equipped with mass flow meters and electric regulating valves to realize the quantitative addition of raw materials, meeting the basic requirements of corrosion-resistant storage and quantitative transportation of water-reducing agents.

[0003] However, existing feeding devices have significant drawbacks in actual continuous unloading operations: when the unloading speed is too fast, the liquid in the tank quickly converges downwards, and a rotating vortex is easily formed above the discharge port. The vortex can carry air into the liquid, causing a false liquid level phenomenon in the tank. This directly leads to instantaneous distortion of the liquid level and flow data collected by the tank's matching liquid level sensor and external mass flow meter, making it impossible to accurately control the amount of water-reducing agent added. This results in deviations in the concrete admixture addition ratio and affects the strength of the finished concrete. If the unloading speed is manually reduced to avoid the vortex problem, the overall unloading efficiency will be greatly reduced, slowing down the entire concrete production line. Therefore, we propose a feeding device for adding cement water-reducing agents. Summary of the Invention

[0004] The purpose of this invention is to provide a feeding device for cement water-reducing agents, to solve the problem mentioned in the background art where, when the equipment unloads too quickly, the liquid in the tank rapidly converges downwards, and a rotating vortex easily forms above the discharge port. This vortex can trap air into the liquid, causing a false liquid level phenomenon in the tank. This directly leads to instantaneous distortion of the liquid level and flow data collected by the tank's matching liquid level sensor and external mass flow meter, making it impossible to accurately control the amount of water-reducing agent added, resulting in deviations in the concrete admixture addition ratio and affecting the strength of the finished concrete. If the unloading speed is manually reduced to avoid the vortex problem, the overall unloading efficiency will be significantly reduced, slowing down the entire concrete production line.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a feeding device for adding cement water-reducing agent, comprising: a tank and a support frame, wherein the support frame is fixedly connected to the top of the tank; It also includes: a mixing mechanism, which is located inside the tank and is used to mix liquids such as cement water-reducing agent inside the tank; The discharge mechanism is located inside the tank and is used to discharge the raw materials in the tank. The monitoring mechanism is located between the tank and the support frame. The monitoring mechanism is used to monitor the vortex state of the liquid when the discharge mechanism discharges the agent. An adjustment mechanism is located on top of the support frame. Based on feedback from the monitoring mechanism, the adjustment mechanism adaptively adjusts the speed at which the discharge mechanism discharges the agent.

[0006] The stirring mechanism includes two stirring rods that are rotatably connected to the inside of the support frame. Gears are fixedly connected to the outer side of each stirring rod, and gear belts are provided on the outer side of the two gears. A drive motor is fixedly connected to the top of the support frame, and the output end of the drive motor is fixedly connected to the top of one of the stirring rods.

[0007] The discharge mechanism includes a hydraulic cylinder fixedly connected to the bottom of the tank. A connecting plate is fixedly connected to the output end of the hydraulic cylinder. A connecting rod is fixedly connected to the top of the connecting plate. A baffle plate is fixedly connected to the top of the connecting rod inside the tank. A leakage plate is fixedly connected to the inner side of the discharge tank at the bottom of the tank.

[0008] The monitoring mechanism includes a turntable that is rotatably connected to the inside of the support frame, a fixed cylinder that is fixedly connected to the top of the turntable, a first limiting groove that is opened inside the fixed cylinder, and a first limiting block that is slidably connected to the inner wall of the first limiting groove.

[0009] The bottom of the first limiting block is fixedly connected to a transmission rod, and the bottom of the transmission rod is fixedly connected to a floating turbine, which is located inside the tank.

[0010] The first limiting block has a second limiting groove inside. A pressure sensor is fixedly connected to one side of the inner wall of the second limiting groove. Two second limiting blocks are slidably connected to the inner wall of the second limiting groove. A first spring is fixedly connected between the two second limiting blocks. One side of one of the second limiting blocks is connected to one side of the pressure sensor. A centrifugal ball is provided inside the first limiting block.

[0011] The adjustment mechanism includes a mounting box fixedly connected to the top of the support frame, an electric telescopic rod fixedly connected to one side of the mounting box, a first tactile switch fixedly connected to the telescopic end of the electric telescopic rod, and a second tactile switch fixedly connected to the bottom of the inner side of the mounting box.

[0012] The installation box has a piston cylinder fixedly connected to one side, a piston slidably connected to the inside of the piston cylinder, a second spring fixedly connected between one side of the piston and one side of the piston cylinder, a piston rod fixedly connected to one side of the piston, the piston rod being located inside the second spring, and a trigger block fixedly connected to the end of the piston rod away from the piston.

[0013] A magnet is fixedly connected to one side of the piston, and an electromagnet is fixedly connected to one side inside the piston cylinder. The electromagnet and the magnet have the same magnetic poles on opposite sides.

[0014] The tank is equipped with a liquid level sensor.

[0015] This invention has at least the following beneficial effects: The stirring mechanism mixes the agent added to the tank, preventing issues like sedimentation, stratification, and uneven concentration that can occur when liquid water-reducing agents are left to stand for extended periods. The discharge mechanism, using a hydraulic cylinder to drive the connecting plate up and down, allows for the addition of the cement water-reducing agent. Adjusting the position of the connecting plate controls the discharge flow rate, facilitating the discharge of the cement water-reducing agent. The monitoring mechanism utilizes a vortex to synchronously drive a floating turbine, combined with a centrifugal ball, to monitor the vortex rotation speed and the presence of vortexes. The change in centrifugal force generated by the floating turbine's rotation converts the physical disturbance signal of the vortex into a pressure electrical signal, with a lag-free detection response. It can identify strong eddies generated by excessively fast unloading and the corresponding false liquid level phenomenon. Through the adjustment mechanism, based on the information fed back by the monitoring mechanism, the electromagnet is supplied with the corresponding electromagnetic strength, and the repulsive force of the magnet with the same pole is combined with the second spring to reset. With the trigger monitoring of the first and second light touch switches, the adaptive agent discharge speed adjustment is realized. When the eddy current exceeds the standard and the unloading is too fast, the magnetic repulsive force pushes the trigger block to trigger the first light touch switch, and then the discharge opening is automatically reduced to reduce the unloading speed, suppress the eddy current and eliminate the false liquid level. When the eddy current is weak and the unloading is too slow, the electromagnetic force weakens, causing the second spring to reset, the trigger block triggers the second light touch switch, and then the discharge opening is automatically expanded to improve the unloading efficiency. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3 This is a schematic diagram of the monitoring mechanism of the present invention; Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A in the diagram; Figure 5 This is a schematic diagram of the adjustment mechanism of the present invention; Figure 6 This is a schematic diagram of the material discharge mechanism of the present invention; Figure 7 This is a schematic diagram of the internal structure of the first limiting block of the present invention.

[0017] In the diagram: 1. Tank; 2. Stirring mechanism; 21. Drive motor; 22. Stirring rod; 23. Gear; 3. Discharge mechanism; 31. Hydraulic cylinder; 32. Connecting plate; 33. Connecting rod; 34. Baffle plate; 35. Leakage plate; 4. Monitoring mechanism; 41. Turntable; 42. Fixed cylinder; 43. First limiting groove; 44. First limiting block; 45. Transmission rod; 46. Second limiting groove; 47. Pressure sensor; 48. Second limiting block; 49. First spring; 410. Centrifugal ball; 411. Floating turbine; 5. Adjustment mechanism; 51. Mounting box; 52. Electric telescopic rod; 53. First tactile switch; 54. Second tactile switch; 55. Piston cylinder; 56. Piston; 57. Piston rod; 58. Trigger block; 59. Second spring; 510. Magnet; 511. Electromagnet; 6. Support frame; 7. Liquid level sensor. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example 1

[0019] Please see Figures 1 to 7 The present invention provides a technical solution: a feeding device for adding cement water-reducing agent, comprising: a tank body 1 and a support frame 6, wherein the support frame 6 is fixedly connected to the top of the tank body 1; It also includes: a stirring mechanism 2, which is installed inside the tank 1 and is used to stir the liquids such as cement water-reducing agent in the tank 1; Discharge mechanism 3 is located inside tank 1 and is used to discharge the raw materials in tank 1. Monitoring mechanism 4 is located between tank 1 and support frame 6. Monitoring mechanism 4 is used to monitor the vortex state when the liquid is discharged when the discharge mechanism 3 discharges the agent. Adjustment mechanism 5 is located on top of support frame 6. Adjustment mechanism 5 adaptively adjusts the speed at which discharge mechanism 3 discharges agent based on information fed back from monitoring mechanism 4.

[0020] The stirring mechanism 2 mixes the agent added to the tank 1 to avoid problems such as sedimentation, stratification, and uneven concentration of the liquid water-reducing agent due to prolonged standing. The discharge mechanism 3 uses a hydraulic cylinder 31 to drive the connecting plate 32 to move up and down, thus enabling the addition of the cement water-reducing agent. Adjusting the position of the connecting plate 32 allows for control of the discharge flow rate, facilitating the discharge of the cement water-reducing agent. The monitoring mechanism 4 uses a vortex to synchronously drive the floating turbine 411, which, combined with a centrifugal ball 410, monitors the rotational speed of the vortex and whether it is generated. The change in centrifugal force generated by the rotation of the floating turbine 411 converts the physical disturbance signal of the vortex into a pressure electrical signal, with no lag in the detection response. It can identify strong eddies and corresponding false liquid level phenomena caused by excessively fast unloading; through the adjustment mechanism 5, based on the information fed back by the monitoring mechanism 4, the electromagnet 511 is supplied with the corresponding electromagnetic strength, and the repulsive force of the magnet 510 with the same pole cooperates with the second spring 59 to reset. With the trigger monitoring of the first tactile switch 53 and the second tactile switch 54, the adaptive agent discharge speed adjustment is realized. When the eddy current exceeds the standard and the unloading is too fast, the magnetic repulsive force pushes the trigger block 58 to trigger the first tactile switch 53, and then the discharge opening is automatically reduced to reduce the unloading speed, suppress the eddy current and eliminate the false liquid level. When the eddy current is weak and the unloading is too slow, the electromagnetic force weakens, causing the second spring 59 to reset, the trigger block 58 to trigger the second tactile switch 54, and then the discharge opening is automatically expanded to improve the unloading efficiency.

[0021] The stirring mechanism 2 includes two stirring rods 22 that are rotatably connected to the inside of the support frame 6. Gears 23 are fixedly connected to the outside of each of the two stirring rods 22. Gear belts are provided on the outside of the two gears 23. A drive motor 21 is fixedly connected to the top of the support frame 6. The output end of the drive motor 21 is fixedly connected to the top of one of the stirring rods 22. When in use, the drive motor 21 is started to drive the single-sided stirring rod 22 to rotate. With the meshing transmission of gear 23 and gear belt, the two stirring rods 22 can be driven to operate synchronously to continuously stir and mix the cement water-reducing agent raw materials inside the tank 1. This avoids the problems of raw material sedimentation, stratification, and uneven concentration that occur when the liquid water-reducing agent is left to stand for a long time, and ensures that the concentration of the discharged liquid is uniform and stable.

[0022] The discharge mechanism 3 includes a hydraulic cylinder 31 fixedly connected to the bottom of the tank body 1. A connecting plate 32 is fixedly connected to the output end of the hydraulic cylinder 31. A connecting rod 33 is fixedly connected to the top of the connecting plate 32. A baffle plate 34 is fixedly connected to the top of the connecting rod 33 inside the tank body 1. A leakage plate 35 is fixedly connected to the inner side of the discharge tank at the bottom of the tank body 1. During use, the hydraulic cylinder 31 extends and retracts, causing the connecting plate 32 and connecting rod 33 to move up and down as a whole, thereby controlling the opening and closing gap between the baffle plate 34 and the discharge plate 35, achieving stable discharge and feeding of cement water-reducing agent; at the same time, by adjusting the lifting stroke of the baffle plate 34, the discharge flow diameter can be changed, directly controlling the discharge flow rate of the agent, providing structural support for the quantitative and uniform discharge of cement water-reducing agent.

[0023] The monitoring mechanism 4 includes a turntable 41 that is rotatably connected to the inside of the support frame 6, a fixed cylinder 42 that is fixedly connected to the top of the turntable 41, a first limiting groove 43 that is opened inside the fixed cylinder 42, and a first limiting block 44 that is slidably connected to the inner wall of the first limiting groove 43. When the liquid inside the tank 1 generates eddy current disturbance during use, the overall monitoring mechanism 4 rotates slightly following the liquid disturbance. At the same time, the first limiting block 44 can slide vertically adaptively along the first limiting groove 43 to adapt to the up and down floating displacement caused by the eddy current, ensuring the normal operation of the overall monitoring mechanism 4 and avoiding structural jamming that affects the accuracy of eddy current detection.

[0024] The bottom of the first limiting block 44 is fixedly connected to a transmission rod 45, and the bottom of the transmission rod 45 is fixedly connected to a floating turbine 411, which is located inside the tank 1. When in use, the downward liquid flow and vortex generated during the unloading of the agent can directly drive the floating turbine 411 to rotate synchronously. The floating turbine 411 transmits the rotational power of the vortex upward through the transmission rod 45, realizing real-time tracking and acquisition of the vortex speed and vortex intensity, and can capture the liquid flow disturbance state during the unloading process.

[0025] The first limiting block 44 has a second limiting groove 46 inside. A pressure sensor 47 is fixedly connected to one side of the inner wall of the second limiting groove 46. Two second limiting blocks 48 are slidably connected to the inner wall of the second limiting groove 46. A first spring 49 is fixedly connected between the two second limiting blocks 48. One side of one of the second limiting blocks 48 is connected to one side of the pressure sensor 47. A centrifugal ball 410 is provided inside the first limiting block 44. When in use, the floating turbine 411 rotates, driving the internal centrifugal ball 410 to generate centrifugal force synchronously. The faster the vortex speed, the greater the centrifugal force of the centrifugal ball 410, which in turn squeezes the second limit blocks 48 on both sides and compresses the first spring 49, pushing the second limit blocks 48 to press against one side of the pressure sensor 47. In this way, the pressure sensor 47 can convert the vortex state into an electrical signal and transmit it for feedback. There is no detection lag, and it can identify strong vortices caused by excessively fast unloading and the corresponding false liquid level phenomenon in the tank. Example 2

[0026] like Figures 1 to 5 In this second embodiment, the other structures remain unchanged, but the difference from the first embodiment is: The adjustment mechanism 5 includes a mounting box 51 fixedly connected to the top of the support frame 6. An electric telescopic rod 52 is fixedly connected to one side inside the mounting box 51. A first tactile switch 53 is fixedly connected to the telescopic end of the electric telescopic rod 52. A second tactile switch 54 is fixedly connected to the bottom inside the mounting box 51. In use, by controlling the electric telescopic rod 52, the first tactile switch 53 can be pushed to the monitoring state of maximum eddy current, which is used to set the eddy current monitoring threshold. The setting position of the second tactile switch 54 is the minimum value of agent feeding and discharge. In this way, the maximum and minimum values ​​of agent discharge flow rate can be set to ensure the normal discharge speed of the agent.

[0027] A piston cylinder 55 is fixedly connected to one side of the mounting box 51. A piston 56 is slidably connected to the inside of the piston cylinder 55. A second spring 59 is fixedly connected between one side of the piston 56 and one side of the piston cylinder 55. A piston rod 57 is fixedly connected to one side of the piston 56. The piston rod 57 is located inside the second spring 59. A trigger block 58 is fixedly connected to the end of the piston rod 57 away from the piston 56. In use, the piston 56 can slide smoothly left and right inside the piston cylinder 55, driving the piston rod 57 and the trigger block 58 to move synchronously. The second spring 59 always provides elastic restoring force to ensure that the trigger block 58 is reset. In this way, the discharge speed of the agent in the tank 1 can be displayed by moving the trigger block 58, and the vortex state of the agent can also be displayed.

[0028] A magnet 510 is fixedly connected to one side of the piston 56, and an electromagnet 511 is fixedly connected to one side inside the piston cylinder 55. The electromagnet 511 and the magnet 510 have the same magnetic poles on opposite sides. During operation, the equipment controls the electromagnet 511 to receive a corresponding current based on the eddy current signal fed back by the pressure sensor 47. The repulsive force generated by the repulsion between the like poles of the electromagnet 511 and the magnet 510 pushes the piston 56 to slide. When the eddy current exceeds the threshold and the unloading is too fast, the electromagnetic repulsive force increases, pushing the trigger block 58 to touch the first tactile switch 53. Then, the hydraulic cylinder 31 is controlled to reduce the discharge opening, reduce the unloading speed, suppress the eddy current, and eliminate false liquid levels. When the eddy current is weak and the unloading is too slow, the current of the electromagnet 511 decreases, the repulsive force decreases, the second spring 59 rebounds and resets, and the trigger block 58 touches the second tactile switch 54, automatically expanding the discharge opening, improving the unloading efficiency, and achieving adaptive speed regulation throughout the process.

[0029] A liquid level sensor 7 is installed inside the tank body 1; During use, the level sensor 7 monitors the real-time level of the water-reducing agent inside the tank 1 online. It collects real level data during normal and stable unloading. When eddies occur and false level data is generated, the system can identify false level data in conjunction with the eddy current signal of the monitoring mechanism 4, thereby avoiding measurement distortion and ensuring the reliability of the feeding measurement data.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A feeding device for adding cement water-reducing agent, characterized in that: include: The tank body and the support frame, wherein the support frame is fixedly connected to the top of the tank body; It also includes: a stirring mechanism, which is installed inside the tank and is used to stir liquids such as cement water-reducing agent inside the tank; A discharge mechanism is provided inside the tank and is used to discharge the raw materials in the tank. A monitoring mechanism is installed between the tank and the support frame. The monitoring mechanism is used to monitor the vortex state of the liquid when the discharge mechanism discharges the agent. An adjustment mechanism is located on top of the support frame. The adjustment mechanism adaptively adjusts the speed at which the discharge mechanism discharges the agent based on information fed back from the monitoring mechanism.

2. The feeding device for adding cement water-reducing agent according to claim 1, characterized in that: The stirring mechanism includes two stirring rods that are rotatably connected to the inside of the support frame. Gears are fixedly connected to the outer sides of both stirring rods, and gear belts are provided on the outer sides of the two gears. A drive motor is fixedly connected to the top of the support frame, and the output end of the drive motor is fixedly connected to the top of one of the stirring rods.

3. The feeding device for adding cement water-reducing agent according to claim 1, characterized in that: The discharge mechanism includes a hydraulic cylinder fixedly connected to the bottom of the tank. A connecting plate is fixedly connected to the output end of the hydraulic cylinder. A connecting rod is fixedly connected to the top of the connecting plate. A baffle plate is fixedly connected to the top of the connecting rod inside the tank. A leakage plate is fixedly connected to the inner side of the discharge tank at the bottom of the tank.

4. The feeding device for adding cement water-reducing agent according to claim 1, characterized in that: The monitoring mechanism includes a turntable rotatably connected to the inside of a support frame, a fixed cylinder fixedly connected to the top of the turntable, a first limiting groove being provided inside the fixed cylinder, and a first limiting block being slidably connected to the inner wall of the first limiting groove.

5. The feeding device for adding cement water-reducing agent according to claim 4, characterized in that: A transmission rod is fixedly connected to the bottom of the first limiting block, and a floating turbine is fixedly connected to the bottom of the transmission rod. The floating turbine is located inside the tank.

6. The feeding device for adding cement water-reducing agent according to claim 5, characterized in that: The first limiting block has a second limiting groove inside. A pressure sensor is fixedly connected to one side of the inner wall of the second limiting groove. Two second limiting blocks are slidably connected to the inner wall of the second limiting groove. A first spring is fixedly connected between the two second limiting blocks. One side of one of the second limiting blocks is connected to one side of the pressure sensor. A centrifugal ball is provided on the inner side of the first limiting block.

7. The feeding device for adding cement water-reducing agent according to claim 1, characterized in that: The adjustment mechanism includes a mounting box fixedly connected to the top of the support frame. An electric telescopic rod is fixedly connected to one side of the mounting box. A first tactile switch is fixedly connected to the telescopic end of the electric telescopic rod. A second tactile switch is fixedly connected to the bottom of the inner side of the mounting box.

8. The feeding device for adding cement water-reducing agent according to claim 7, characterized in that: A piston cylinder is fixedly connected to one side of the mounting box. A piston is slidably connected to the inside of the piston cylinder. A second spring is fixedly connected between one side of the piston and one side of the piston cylinder. A piston rod is fixedly connected to one side of the piston. The piston rod is located inside the second spring. A trigger block is fixedly connected to the end of the piston rod away from the piston.

9. The feeding device for adding cement water-reducing agent according to claim 8, characterized in that: A magnet is fixedly connected to one side of the piston, and an electromagnet is fixedly connected to one side inside the piston cylinder. The electromagnet and the magnet have the same magnetic poles on opposite sides.

10. The feeding device for adding cement water-reducing agent according to claim 1, characterized in that: A liquid level sensor is installed inside the tank.

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