Automatic scale inhibitor dispensing device

Abstract

The utility model discloses an automatic scale inhibitor dispensing device, which relates to the technical field of scale inhibitor production and comprises a mixing barrel, a stirring component for mixing raw materials is mounted on the mixing barrel, a discharge pipe is arranged at the lower end of the mixing barrel, and an electric control valve and a concentration meter are mounted on the discharge pipe; a raw material barrel is arranged on the mixing barrel, a sealing cover is arranged on the raw material barrel, a molecular sieve is arranged on the sealing cover, the lower end of the raw material barrel is connected with a material conveying barrel through a first connecting pipe, a discharging assembly used for quantitative discharging is arranged on the material conveying barrel, and a telescopic pipe is connected between the other end of the material conveying barrel and the mixing barrel. A weighing assembly is arranged among the mixing barrel, the raw material barrel and the conveying barrel; a water tank is mounted on the mixing barrel, a second connecting pipe is arranged between the water tank and the mixing barrel, and an electromagnetic diaphragm metering pump is connected to the second connecting pipe; according to the utility model, the limitation that the existing device depends on fixed rotating speed or vibration frequency to control blanking is broken through, and dynamic quantitative blanking based on actual weight is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of scale inhibitor production, specifically to a scale inhibitor automatic dispensing device. BACKGROUND

[0002] In the industrial production field, the circulating water system (such as the cooling circulating water system of the power, chemical, metallurgical industry) is the key component to ensure the stable operation of equipment. However, in the long-term circulation process, calcium and magnesium ions in water are easy to combine with carbonate, sulfate and other ions to form scale, which adheres to the inner wall of the pipeline and the surface of the heat exchange equipment, resulting in pipeline blockage, heat exchange efficiency reduction, and even equipment corrosion, energy consumption increase and shutdown failure. Therefore, accurate dosing of scale inhibitor into the circulating water system to inhibit scale formation has become a core technical means to ensure the stable operation of the circulating water system.

[0003] At present, the dosing method of scale inhibitor commonly used in the industrial field mainly relies on the scale inhibitor automatic dispensing device, which realizes the mixing and preparation of scale inhibitor raw materials and water, and quantitatively adds the scale inhibitor solution meeting the concentration requirement into the circulating water system. However, the existing scale inhibitor automatic dispensing device still has many technical defects in actual application, and it is difficult to meet the high-precision and automatic dispensing requirements, such as insufficient quantitative discharging precision. The discharging assembly of the existing device mainly adopts screw conveyors, electromagnetic vibrating feeders and other structures, and the discharging amount control relies on fixed speed or vibration frequency without dynamic adjustment combined with the actual weight of the raw materials. Because the bulk density of scale inhibitor raw materials may change due to deliquescence and caking, the fixed parameter discharging method is easy to cause large deviation between the actual discharging amount and the set value, and further cause the concentration fluctuation of the prepared solution, affect the scale inhibition effect, and increase the risk of water pollution and reagent cost due to excessive concentration, and the scale inhibition effect is poor due to low concentration. Therefore, the technical personnel in the field provide a scale inhibitor automatic dispensing device to solve the problems in the above background technology. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a scale inhibitor automatic dispensing device to solve the problems in the above background technology.

[0005] To achieve the above purpose, the utility model provides the following technical scheme:

[0006] A scale inhibitor automatic dispensing device comprises:

[0007] A mixing barrel is provided with a stirring assembly for mixing raw materials, and a discharge pipe is arranged at the lower end of the mixing barrel, and an electric control valve and a concentration meter are arranged on the discharge pipe.

[0008] The mixing barrel is provided with a raw material barrel, the raw material barrel is provided with a sealing cover, the sealing cover is provided with a molecular sieve, the raw material barrel is connected with a feeding cylinder through a first connecting pipe, the feeding cylinder is provided with a discharging assembly for quantitative discharging, a flexible pipe is connected between the other end of the feeding cylinder and the mixing barrel, and a weighing assembly is arranged between the mixing barrel, the raw material barrel and the feeding cylinder.

[0009] A water tank is mounted on the mixing barrel, a second connecting pipe is arranged between the water tank and the mixing barrel, and an electromagnetic diaphragm metering pump is connected to the second connecting pipe.

[0010] Preferably, the sealing cover is provided with a connecting ring, the connecting ring is threadedly connected with a mesh placing frame, and the molecular sieve is placed in the mesh placing frame.

[0011] Preferably, the discharging assembly comprises a first driving motor, a first rotating rod and a spiral blade, the first rotating rod is rotatably connected in the feeding cylinder, the spiral blade is arranged on the first rotating rod, the first driving motor is mounted on the feeding cylinder, and the output end of the first driving motor is connected with the extension end of the first rotating rod penetrating the feeding cylinder.

[0012] Preferably, the weighing assembly comprises a high-precision weighing sensor and a supporting plate, the supporting plate is arranged on the mixing barrel, and the high-precision weighing sensor is mounted between the supporting plate and the feeding cylinder.

[0013] Preferably, the weighing assembly further comprises a supporting rod and a reset spring, a plurality of mounting grooves are formed in the supporting plate, one end of the reset spring is mounted in the mounting groove, the other end of the reset spring is connected with the supporting rod, and the end of the supporting rod away from the reset spring is connected with the feeding cylinder and the raw material barrel, respectively.

[0014] Preferably, a liquid level sensor is mounted in the water tank, and a capacitance sensor is mounted in the raw material barrel.

[0015] Preferably, the stirring assembly comprises a mounting box, a second driving motor, a conical gear disc, a second rotating rod, a rotating ring, a stirring frame and a plurality of stirring rods, the mounting box is mounted on the mixing barrel, the rotating ring is rotatably connected on the mixing barrel, the stirring frame is connected with one end of the rotating ring, the other end of the rotating ring is provided with a first conical gear ring, one end of the second rotating rod is rotatably connected with the mounting box penetrating the mixing barrel, the rotating ring is sleeved on the outside of the second rotating rod, the second rotating rod is provided with a second conical gear ring, the second driving motor is mounted in the mounting box, the output end of the second driving motor is connected with the conical gear disc, and the conical gear disc is meshed with the first conical gear ring and the second conical gear ring.

[0016] Preferably, the mixing barrel is provided with a controller electrically connected with the electric control valve, the concentration meter, the electromagnetic diaphragm metering pump, the first driving motor, the high-precision weighing sensor, the liquid level sensor, the capacitance sensor and the second driving motor.

[0017] Compared with the prior art, the utility model has the advantages that:

[0018] 1、The utility model discloses a weighing assembly is arranged between the mixing barrel and the raw material barrel, material conveying cylinder, and is matched with the discharging assembly on the material conveying cylinder, breaks through the limitation of the existing device to rely on fixed rotating speed or vibration frequency control discharging, realizes dynamic quantitative discharging based on actual weight. The weighing assembly realizes the synchronous monitoring of the raw material barrel residual amount and the raw material weight in the material conveying cylinder through the real -time acquisition of weight data of high -precision weighing sensor, the force transmission mechanism of support rod and reset spring, when the discharging assembly operates, can accurate adjustment discharging rate and length of time according to the set discharging weight, even if the scale inhibitor raw material appears the change of packing density because of external factors, can also correct the discharging amount in time through weight feedback, effectively avoid the deviation of actual discharging amount and set value, significantly improve quantitative discharging precision, and then guarantee the stable concentration of dispensing, avoid the waste of medicament and water pollution caused by the concentration too high, also prevent the scale failure problem caused by the concentration too low.

[0019] 2、The utility model discloses a molecular sieve is set up on the raw material barrel sealing cover, and is matched with the electromagnetic diaphragm metering pump between the water tank and the mixing barrel, and simultaneously solves the problem of poor moisture resistance of raw material storage and insufficient water control precision of the existing device. On the one hand, the molecular sieve can effectively adsorb the moisture in the air in the raw material barrel, prevent the external moisture from entering, avoid the deliquescence and caking of the scale inhibitor raw material, guarantee the flowability and purity of the raw material, reduce the hidden danger of discharging blockage and dispensing concentration fluctuation from the source, on the other hand, the electromagnetic diaphragm metering pump has high-precision flow control capability, can accurately adjust the water supply amount of the water tank to the mixing barrel according to the dispensing demand, combined with the full mixing of the stirring assembly and the real-time monitoring of the concentration meter of the discharge pipe, forms the closed loop control of " accurate water supply-high efficiency mixing-concentration verification", further improves the dispensing quality and automation level, reduces the cost of manual intervention. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a structure schematic view of an automatic scale inhibitor dispensing device in the embodiment of the application;

[0021] Figure 2 It is a sectional structure schematic view of an automatic scale inhibitor dispensing device in the embodiment of the application;

[0022] Figure 3 It is a sectional structure schematic view of a raw material barrel of an automatic scale inhibitor dispensing device in the embodiment of the application;

[0023] Figure 4For Figure 3 Enlarged view at A in the middle;

[0024] Figure 5 For the water tank structure of an automatic dosing device for scale inhibitor in the embodiments of the application.

[0025] In the figure: 1, mixing barrel; 2, discharge pipe; 3, electric control valve; 4, concentration meter; 5, raw material barrel; 6, sealing cover; 7, molecular sieve; 8, first connecting pipe; 9, material conveying cylinder; 10, telescopic pipe; 11, water tank; 12, second connecting pipe; 13, electromagnetic diaphragm metering pump; 14, connecting ring; 15, net-shaped placing frame; 16, first driving motor; 17, first rotating rod; 18, spiral blade; 19, high-precision weighing sensor; 20, support plate; 21, support rod; 22, reset spring; 23, mounting groove; 24, liquid level sensor; 25, capacitive sensor; 26, mounting box; 27, second driving motor; 28, conical gear disc; 29, second rotating rod; 30, rotating ring; 31, stirring frame; 32, stirring rod; 33, first conical gear ring; 34, second conical gear ring; 35, controller. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0027] Please refer to Figures 1-5 The present application provides a technical solution:

[0028] An automatic dosing device for scale inhibitor, comprising:

[0029] The mixing barrel 1 is provided with a stirring assembly for mixing raw materials, the stirring assembly comprises a mounting box 26, a second driving motor 27, a bevel gear disc 28, a second rotating rod 29, a rotating ring 30, a stirring frame 31 and a plurality of stirring rods 32, the mounting box 26 is mounted on the mixing barrel 1, the rotating ring 30 is rotationally connected to the mixing barrel 1, the stirring frame 31 is connected to one end of the rotating ring 30, the rotating ring 30 is provided with a first bevel gear ring 33 at the other end, one end of the second rotating rod 29 penetrates the mixing barrel 1 and is rotationally connected to the mounting box 26, the rotating ring 30 is sleeved on the outer side of the second rotating rod 29, the second rotating rod 29 is provided with a second bevel gear ring 34, the second driving motor 27 is mounted in the mounting box 26, and the output end of the second driving motor 27 is connected with the bevel gear disc 28, and the bevel gear disc 28 is meshed with the first bevel gear ring 33 and the second bevel gear ring 34, and the lower end of the mixing barrel 1 is provided with a discharge pipe 2, and the discharge pipe 2 is provided with an electric control valve 3 and a concentration meter 4;

[0030] The mixing barrel 1 is provided with a raw material barrel 5, the raw material barrel 5 is provided with a sealing cover 6, the sealing cover 6 is provided with a molecular sieve 7, the sealing cover 6 is provided with a connecting ring 14, the connecting ring 14 is threadedly connected with a net-shaped placing frame 15, and the molecular sieve 7 is placed in the net-shaped placing frame 15;

[0031] The raw material barrel 5 is connected with a feeding cylinder 9 through a first connecting pipe 8 at the lower end, the feeding cylinder 9 is provided with a discharging assembly for quantitative discharging, the discharging assembly comprises a first driving motor 16, a first rotating rod 17 and a spiral blade 18, the first rotating rod 17 is rotationally connected in the feeding cylinder 9, the spiral blade 18 is arranged on the first rotating rod 17, the first driving motor 16 is mounted on the feeding cylinder 9, and the output end of the first driving motor 16 is connected with the extension end of the first rotating rod 17 penetrating the feeding cylinder 9, and the other end of the feeding cylinder 9 is connected with the mixing barrel 1 through an elastic pipe 10;

[0032] The mixing barrel 1 and the raw material barrel 5 are provided with a weighing assembly between the weighing assembly and the feeding cylinder 9, the weighing assembly comprises a high-precision weighing sensor 19 and a supporting plate 20, the supporting plate 20 is arranged on the mixing barrel 1, the high-precision weighing sensor 19 is mounted between the supporting plate 20 and the feeding cylinder 9, the weighing assembly further comprises a supporting rod 21 and a reset spring 22, a plurality of mounting grooves 23 are formed in the supporting plate 20, one end of the reset spring 22 is mounted in the mounting groove 23, and the other end of the reset spring 22 is connected with the supporting rod 21, and one end of the supporting rod 21 away from the reset spring 22 is connected with the feeding cylinder 9 and the raw material barrel 5 respectively;

[0033] Before the device starts, the raw material preparation and initialization need to be completed: open the raw material barrel 5 seal cover 6, load the scale inhibitor raw material, the seal cover 6 is fixed in the mesh-shaped placement frame 15 by the connecting ring 14, the built-in molecular sieve 7 can continuously adsorb the moisture in the barrel, cooperate with the capacitor sensor 25 in the raw material barrel 5 to monitor the raw material quantity in real time, avoid the raw material from deliquescence and caking from the source; after injecting clean water into the water tank 11, the liquid level sensor 24 automatically feeds back the water level data to ensure sufficient water supply. After the operator presets the solution concentration, single dose and other parameters through the controller 35, the system enters the automatic operation state, and the high-precision weighing sensor 19 immediately collects the initial weight of the raw material barrel 5 and the empty weight of the feeding cylinder 9 to provide reference data for quantitative control.

[0034] In the quantitative feeding stage, the controller 35 drives the feeding assembly to run according to the required raw material quantity calculated by the concentration meter 4: the first driving motor 16 drives the first rotating rod 17 and the spiral blade 18 to rotate, the raw material is transported from the raw material barrel 5 to the feeding cylinder 9 through the first connecting pipe 8, at this time the high-precision weighing sensor 19 tracks the weight change of the feeding cylinder 9 in real time, when the set value is reached, the controller 35 immediately stops the motor, and the raw material falls into the mixing barrel 1 through the telescopic pipe 10. This process relies on weighing feedback to dynamically adjust the running time of the spiral blade 18, completely solving the quantitative error problem caused by the change of raw material accumulation density in traditional devices, and further ensuring the stability of feeding by matching the adaptability of the telescopic pipe 10 to the relative position change of the feeding cylinder 9 and the mixing barrel 1.

[0035] The water tank 11 is installed on the mixing barrel 1, and the second connecting pipe 12 is arranged between the water tank 11 and the mixing barrel 1, and the electromagnetic diaphragm metering pump 13 is connected to the second connecting pipe 12.

[0036] In the precise water supply and mixing stage started synchronously, the controller 35 matches the water supply quantity according to the raw material quantity, and injects a quantitative amount of clean water from the water tank 11 into the mixing barrel 1 through the electromagnetic diaphragm metering pump 13; at the same time, the stirring assembly works efficiently in a double-reverse-rotation structure, the second driving motor 27 drives the conical gear disc 28 to rotate, and through the meshing with the first conical gear ring 33 and the second conical gear ring 34, the second driving motor 27 synchronously drives the revolution of the rotating ring 30 (driving the stirring frame 31) and the rotation of the second rotating rod 29 (driving the stirring rod 32), greatly eliminating the mixing dead angle and shortening the mixing time of the raw material and water. After mixing is completed, the concentration meter 4 on the discharge pipe 2 detects the solution concentration in real time and feeds back to the controller 35, if the concentration is not up to standard, the system can automatically add clean water through the metering pump or control the feeding assembly to add raw material, forming a closed-loop control of "mixing-detection-correction", reducing errors.

[0037] Further, the liquid level sensor 24 is installed in the water tank 11, and the capacitor sensor 25 is installed in the raw material barrel 5.

[0038] In the above embodiment, the mixing barrel 1 is provided with a controller 35 electrically connected with the electric control valve 3, the concentration meter 4, the electromagnetic diaphragm metering pump 13, the first driving motor 16, the high-precision weighing sensor 19, the liquid level sensor 24, the capacitance sensor 25 and the second driving motor 27 respectively.

[0039] It should be noted that the specific model specifications of the controller 35, the electric control valve 3, the concentration meter 4, the electromagnetic diaphragm metering pump 13, the first driving motor 16, the high-precision weighing sensor 19, the liquid level sensor 24, the capacitance sensor 25 and the second driving motor 27 need to be determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in the art, so it will not be described in detail.

[0040] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An automatic dosing device for scale inhibitors, characterized in that, Include: Mixing barrel (1), the mixing barrel (1) is installed with the stirring assembly for raw material mixing, the lower end of the mixing barrel (1) is provided with a discharge pipe (2), the discharge pipe (2) is installed with an electric control valve (3) and a concentration meter (4); The mixing barrel (1) is provided with a raw material barrel (5), the raw material barrel (5) is provided with a sealing cover (6), the sealing cover (6) is provided with a molecular sieve (7), the lower end of the raw material barrel (5) is connected with a feeding cylinder (9) through a first connecting pipe (8), the feeding cylinder (9) is provided with a discharging assembly for quantitative discharging, the other end of the feeding cylinder (9) and the mixing barrel (1) are connected with a flexible pipe (10), the mixing barrel (1) and the raw material barrel (5) and the feeding cylinder (9) are provided with a weighing assembly; The mixing barrel (1) is installed with a water tank (11), the water tank (11) and the mixing barrel (1) are provided with a second connecting pipe (12), the second connecting pipe (12) is connected with an electromagnetic diaphragm metering pump (13).

2. The automatic dosing device of scale and corrosion inhibitors according to claim 1, wherein: The sealing cover (6) is provided with a connecting ring (14), the connecting ring (14) is threadedly connected with a mesh placing frame (15), and the molecular sieve (7) is placed in the mesh placing frame (15).

3. The automatic dosing device of scale and corrosion inhibitors of claim 1, wherein: The discharging assembly comprises a first driving motor (16), a first rotating rod (17) and a spiral blade (18), the first rotating rod (17) is rotatably connected in the feeding cylinder (9), the spiral blade (18) is arranged on the first rotating rod (17), the first driving motor (16) is installed on the feeding cylinder (9), and the output end of the first driving motor (16) is connected with the extension end of the first rotating rod (17) penetrating the feeding cylinder (9).

4. The automatic dosing device of scale and corrosion inhibitor according to claim 3, wherein: The weighing assembly comprises a high-precision weighing sensor (19) and a supporting plate (20), the supporting plate (20) is arranged on the mixing barrel (1), and the high-precision weighing sensor (19) is installed between the supporting plate (20) and the feeding cylinder (9).

5. The automatic dosing device of scale and corrosion inhibitors according to claim 4, wherein: The weighing assembly further comprises a supporting rod (21) and a reset spring (22), a plurality of mounting grooves (23) are formed in the supporting plate (20), one end of the reset spring (22) is installed in the mounting groove (23), the other end of the reset spring (22) is connected with the supporting rod (21), and the other end of the supporting rod (21) away from the reset spring (22) is connected with the feeding cylinder (9) and the raw material barrel (5) respectively.

6. The automatic dosing device of scale and corrosion inhibitor according to claim 5, wherein: The water tank (11) is installed with a liquid level sensor (24), and the raw material barrel (5) is installed with a capacitive sensor (25).

7. An automatic dosing device for scale inhibitors according to claim 6, characterized in that: The stirring assembly comprises a mounting box (26), a second driving motor (27), a conical gear disc (28), a second rotating rod (29), a rotating ring (30), a stirring frame (31) and a plurality of stirring rods (32), the mounting box (26) is mounted on the mixing barrel (1), the rotating ring (30) is rotatably connected to the mixing barrel (1), one end of the stirring frame (31) is connected to the rotating ring (30), the other end of the rotating ring (30) is provided with a first conical gear ring (33), one end of the second rotating rod (29) penetrates the mixing barrel (1) and is rotatably connected to the mounting box (26), the rotating ring (30) is sleeved on the outside of the second rotating rod (29), the second rotating rod (29) is provided with a second conical gear ring (34), the second driving motor (27) is mounted in the mounting box (26), the output end of the second driving motor (27) is connected to the conical gear disc (28), and the conical gear disc (28) is meshed with the first conical gear ring (33) and the second conical gear ring (34).

8. The automatic dosing device of scale and corrosion inhibitor according to claim 7, wherein: A controller (35) is mounted on the mixing barrel (1), and the controller (35) is electrically connected with the electric control valve (3), the concentration meter (4), the electromagnetic diaphragm metering pump (13), the first driving motor (16), the high-precision weighing sensor (19), the liquid level sensor (24), the capacitance sensor (25) and the second driving motor (27) respectively.

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