Automatic dosing device for circulating water

Abstract

The utility model discloses a kind of automatic dosing devices of circulating water, it is related to circulating water dosing technical field, including medicament storage component, medicament conveying component and mixing component.Medicament storage component contains multiple vertical cylindrical storage tank;Medicament conveying component is composed of discharge pipeline, precision metering pump, connecting pipe and tubular spring shock absorber, and spiral spring and rubber damping layer are equipped in shock absorber;Mixing component includes cylindrical mixing tank, and water inlet pipeline is arranged in the bottom edge obliquely, and multiple turbulence plates with staggered through holes are arranged in the inside along the axial direction interval, top end is equipped with dosing spray head, and spring shock absorber is connected with dosing spray head.This device forms rotating vortex by oblique water inlet, cooperates turbulence plate to enhance turbulence, solves the problem of uneven mixing;Spring shock absorber buffering vibration, guaranteeing the measurement accuracy and pipeline life, applicable to industrial and central air conditioning circulating water treatment, improve system operating efficiency and equipment life.

Description

Technical Field

[0001] This utility model relates to the field of circulating water dosing technology, and in particular to an automatic circulating water dosing device. Background Technology

[0002] In industrial production and central air conditioning systems, circulating water systems are crucial components, and their water quality directly impacts system efficiency and equipment lifespan. To prevent corrosion, scaling, and microbial growth in circulating water systems, various water treatment chemicals are typically added. In the mixing process, the circulating water is usually introduced into the mixing container vertically or radially, resulting in a straight flow. This leads to short contact time and small contact area with the chemicals, making it difficult for the chemicals to diffuse evenly. At the same time, the internal turbulence structure is fixed in a complicated way, making it impossible to enhance the turbulence effect through reasonable layout. This further aggravates the problem of uneven mixing between the chemicals and the circulating water, resulting in excessively high chemical concentrations in some areas and insufficient concentrations in others, which seriously affects the water treatment effect. Therefore, an optimized automatic dosing device for circulating water is needed to solve the above-mentioned problem of uneven mixing. Utility Model Content

[0003] The purpose of this invention is to provide an automatic dosing device for circulating water, which solves the problem of uneven mixing by improving the water inlet method and the coordinated design of the mixing components. The objective of this utility model is achieved through the following technical solution: An automatic dosing device for circulating water includes a reagent storage component, a reagent delivery component, and a mixing component; the reagent storage component includes multiple independent, vertically cylindrical storage tanks. The pharmaceutical delivery assembly consists of a discharge pipe, a precision metering pump, a connecting pipe, and a tubular spring shock absorber; the shock absorber is hollow inside and is equipped with a helical spring and a rubber damping layer. One end of the discharge pipe is welded to the discharge port at the bottom of the storage tank, and the other end is connected to the inlet of the precision metering pump. One end of the connecting pipe is connected to the outlet of the metering pump, and the other end is connected to one end of the spring shock absorber. The mixing assembly includes a cylindrical mixing tank, an inlet pipe, an outlet pipe, and a dosing nozzle. The inlet pipe is inclined at the bottom of the mixing tank near the edge. Multiple circular baffles are spaced axially inside the mixing tank, and multiple through holes are evenly distributed on the baffles. The through holes of adjacent baffles are arranged in an alternating pattern. The outlet pipe is located on the side wall of the mixing tank. The dosing nozzle is located at the top of the cylindrical mixing tank. The end of the spring shock absorber away from the connecting pipe is connected to the inlet of the dosing nozzle.

[0004] Preferably, the bottom of the storage tank has an inverted conical structure, and each storage tank sidewall is provided with a liquid level observation window, the surface of which is provided with a scale.

[0005] Preferably, the spring damper has a through cylindrical cavity inside; the spring damper is disposed in the cylindrical cavity and is made of stainless steel wire. An annular limiting platform is provided on the inner side of each of the upper and lower ends of the inner wall of the spring damper. The top end of the helical spring abuts against the lower surface of the upper limiting platform, and the bottom end abuts against the upper surface of the lower limiting platform. A 2-3mm thick fluororubber buffer pad is installed on the surface of the limiting platform in contact with the helical spring, and the buffer pad is fixed to the surface of the limiting platform through a vulcanization process. The rubber damping layer has a cylindrical structure, is made of fluororubber, and tightly wraps around the outside of the helical spring. The inner wall of the rubber damping layer is fixed to the helical spring, and the outer wall of the rubber damping layer is fixed to the inner wall of the spring damper through a vulcanization process.

[0006] Preferably, the surface of the helical spring is uniformly coated with a polytetrafluoroethylene coating with a thickness of 0.1-0.3 mm; the thickness of the rubber damping layer is 6-8 mm.

[0007] Preferably, the precision metering pump is a plunger-type metering pump, and the pump head is made of polytetrafluoroethylene. Preferably, the mixing tank and the baffle are connected by bolts; the top of the mixing tank is detachably provided with a top cover. Preferably, the precision metering pump is equipped with a motor drive module, an electromagnetic flow meter is installed on the inlet pipe of the mixing tank, and an electromagnetic valve is installed at the bottom outlet of the storage tank. The electromagnetic flow meter, the electromagnetic valve, and the motor drive module of the precision metering pump are all electrically connected to a programmable logic controller.

[0008] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention solves the problem of uneven mixing caused by traditional vertical or radial water inlet by tilting the water inlet pipe near the edge of the bottom of the mixing tank. This causes the circulating water to form a rotating vortex along the tangential direction of the tank wall when it enters the mixing tank, which prolongs the contact time with the reagent and increases the contact area.

[0009] By axially spaced multiple circular baffles with staggered through holes inside the mixing tank, the rotating water flow is further cut and disrupted, enhancing the turbulence effect and ensuring that the reagent is fully mixed with the circulating water, thus avoiding excessively high or low concentrations in certain areas.

[0010] The continuous structure of the chemical delivery components (storage tank → discharge pipe → precision metering pump → connecting pipe → spring shock absorber → dosing nozzle) ensures stable chemical delivery. Combined with the layout of the dosing nozzle at the top of the mixing tank, the chemical is sprayed directly onto the center of the rotating water flow, improving mixing efficiency.

[0011] By installing a spring damper, the internal helical spring and fluororubber damping layer work together to effectively buffer the vibration generated during the operation of the precision metering pump. This prevents the vibration from being transmitted to the dosing nozzle through the connecting pipe, which could lead to problems such as unstable pesticide spraying and fluctuations in metering accuracy. At the same time, it reduces fatigue damage to the pipe connections caused by vibration, extends the overall service life of the device, and ensures the stability and reliability of the pesticide delivery process. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure in the front view of Example 1; Figure 2 This is a cross-sectional view of the mixing tank in Example 1 from the front view. Figure 3 for Figure 1 A cross-sectional view of the spring damper from the front view. Figure 4 for Figure 3 Schematic diagram of cross-section from top view In the diagram: 1-Storage tank, 2-Discharge pipe, 3-Precision metering pump, 4-Connecting pipe, 5-Spring shock absorber, 6-Helical spring, 7-Rubber damping layer, 8-Mixing tank, 9-Water inlet pipe, 10-Dosing nozzle, 11-Baffle plate, 12-Through hole, 13-Limiting platform. Detailed Implementation

[0013] Example 1 An automatic chemical dosing device for circulating water, such as Figure 1 As shown, it includes a drug storage assembly, a drug delivery assembly, and a mixing assembly; the drug storage assembly includes multiple independent, vertically cylindrical storage tanks 1; like Figure 1 , Figure 3 and Figure 4 As shown, the drug delivery assembly consists of a discharge pipe 2, a precision metering pump 3, a connecting pipe 4, and a tubular spring shock absorber 5; the shock absorber is hollow inside and is equipped with a helical spring 6 and a rubber damping layer 7. like Figure 1 As shown, one end of the discharge pipe 2 is welded to the discharge port at the bottom of the storage tank 1, and the other end is connected to the inlet of the precision metering pump 3. One end of the connecting pipe 4 is connected to the outlet of the metering pump, and the other end is connected to one end of the spring shock absorber 5. like Figure 1-2As shown, the mixing assembly includes a cylindrical mixing tank 8, an inlet pipe 9, an outlet pipe, and a dosing nozzle 10. The inlet pipe 9 is inclinedly arranged at the bottom of the mixing tank 8 near the edge. Multiple circular baffles 11 are spaced apart along the axial direction inside the mixing tank 8. Multiple through holes 12 are evenly distributed on the baffles 11, and the through holes 12 of adjacent baffles 11 are staggered. The outlet pipe is located on the side wall of the mixing tank 8. The dosing nozzle 10 is located at the top of the cylindrical mixing tank 8. The end of the spring shock absorber 5 away from the connecting pipe 4 is connected to the inlet of the dosing nozzle 10.

[0014] Furthermore, such as Figure 3-4 As shown, the spring damper 5 has a through cylindrical cavity inside (to ensure smooth flow of the agent and avoid residue); the spring damper 5 is set in the cylindrical cavity and is made of stainless steel wire. The inner walls of the spring damper 5 have annular limiting platforms 13 on the inner sides of the upper and lower ends. The top end of the helical spring 6 abuts against the lower surface of the upper limiting platform 13 and the bottom end abuts against the upper surface of the lower limiting platform 13. A 2-3mm thick fluororubber buffer pad (existing technology, not shown in the figure) is installed on the surface of the limiting platform 13 in contact with the helical spring 6. The fluororubber buffer pad is fixed to the surface of the limiting platform 13 by a vulcanization process (existing technology); the rubber damping layer 7 is a cylindrical structure made of fluororubber and tightly wraps around the outside of the helical spring 6. The inner wall of the rubber damping layer 7 is fixed to the helical spring 6 and the outer wall of the rubber damping layer 7 is fixed to the inner wall of the spring damper 5 by a vulcanization process. The helical spring 6 is positioned by the limiting platform 13, and works with the fluororubber buffer pad to reduce hard impacts and improve shock absorption stability; the fluororubber damping layer 7 is fixed to the inner wall of the helical spring 6 and the spring shock absorber 5 through a vulcanization process, which not only enhances the shock absorption effect, but also prevents drug leakage, and is resistant to chemical corrosion, making it suitable for drug delivery environments.

[0015] Furthermore, the precision metering pump 3 is equipped with a motor drive module (existing technology, not shown in the figure), an electromagnetic flow meter (existing technology, not shown in the figure) is installed on the inlet pipe 9 of the mixing tank 8, and a solenoid valve (existing technology, not shown in the figure) is installed at the bottom outlet of the storage tank 1. The electromagnetic flow meter, solenoid valve, and motor drive module of the precision metering pump 3 are all electrically connected to a programmable logic controller (not shown in the figure) installed on the outer wall of the mixing tank 8. The electromagnetic flow meter monitors the circulating water flow in real time, and the programmable logic controller automatically adjusts the opening of the solenoid valve and the frequency of the precision metering pump 3 according to the flow signal, realizing dynamic matching between the dosage of the reagent and the circulating water volume, improving the degree of automation and the accuracy of dosing, and reducing manual intervention.

[0016] In actual implementation, the storage tank 1 and the mixing tank 8 can be connected by a fixing rod (existing technology, not shown in the figure), and the four corners of the bottom of the mixing tank 8 are provided with support legs (existing technology, not shown in the figure).

[0017] Working principle: During operation, the water treatment agent in storage tank 1 enters the discharge pipe 2 through the bottom outlet. A plunger-type precision metering pump 3 (model JZM-A, equipped with a 550W AC motor drive module) extracts and pressurizes the agent according to the set flow rate. The agent is then transported through connecting pipe 4 to spring shock absorber 5, and flows stably through its internal cylindrical cavity to the dosing nozzle 10, finally being sprayed into the mixing tank 8 from the top. Simultaneously, circulating water enters through the inlet pipe 9 at the bottom of mixing tank 8, near the edge, at a 30° angle to the tank wall tangent, forming a vortex rotating along the tank wall. As the water flows upward, it passes through three spaced circular baffles 11 (through holes 12 with a diameter of 20mm, and adjacent plates with staggered through holes 12), creating strong turbulence under the influence of the baffles, and fully mixing with the agent sprayed from the top. An electromagnetic flow meter (model LDG-15) is installed on the inlet pipe 9 of mixing tank 8. The system monitors the circulating water flow rate in real time and transmits the signal to the programmable logic controller (S7-200). The controller automatically adjusts the opening degree of the solenoid valve (2W-160-15) at the bottom outlet of storage tank 1 and the operating frequency (0-50Hz) of precision metering pump 3 according to the preset reagent addition ratio, so as to achieve dynamic matching between the reagent addition amount and the circulating water volume. The mixed circulating water is finally discharged from the water outlet pipe on the side wall of mixing tank 8, completing the water treatment process.

[0018] Example 2 Based on Example 1, such as Figure 1 As shown, the bottom of the storage tank 1 has an inverted conical structure, and each storage tank 1 has a liquid level observation window (existing technology, not shown in the figure) on its side wall. The surface of the observation window is provided with graduations (existing technology, not shown in the figure). In this solution, by making the bottom of the storage tank 1 into an inverted conical structure, the agent is guided to converge towards the discharge port, reducing residue; the graduated liquid level observation window on the side wall allows for a direct view of the remaining agent level, facilitating timely replenishment and ensuring continuous dosing.

[0019] Furthermore, the surface of the helical spring 6 is uniformly coated with a 0.1-0.3 mm thick polytetrafluoroethylene coating (existing technology, not shown in the figure); the rubber damping layer 7 has a thickness of 6-8 mm. The polytetrafluoroethylene coating on the surface of the helical spring 6 further enhances corrosion resistance and prevents chemical erosion; the 6-8 mm thick fluororubber damping layer 7 ensures structural strength and extends service life while maintaining shock absorption performance.

[0020] Furthermore, the precision metering pump 3 is a plunger-type metering pump with a pump head made of polytetrafluoroethylene (PTFE). The PTFE pump head of the plunger-type metering pump is resistant to chemical corrosion and offers high metering accuracy (stable flow rate), making it suitable for the quantitative delivery of various water treatment chemicals and preventing metering accuracy from being affected by pump head corrosion. Furthermore, such as Figure 2 As shown, the mixing tank 8 and the baffle 11 are connected by bolts; a top cover is detachably installed on the top of the mixing tank 8. The baffle 11 and the inner wall of the mixing tank 8 are slidably connected. The mixing tank 8 and the top cover can be connected by bolts. In this solution, the top cover of the mixing tank 8 is detachable, which facilitates internal inspection and maintenance and improves the convenience of equipment operation and maintenance. The mixing tank 8 and the baffle 11 are connected by bolts, which facilitates the disassembly, cleaning or replacement of the baffle 11, solving the problem of cumbersome traditional fixing methods.

Claims

1. An automatic dosing device for circulating water, comprising a reagent storage component, a reagent delivery component, and a mixing component; characterized in that, The pharmaceutical storage assembly includes multiple independent, vertically cylindrical storage tanks (1). The pharmaceutical delivery assembly consists of a discharge pipe (2), a precision metering pump (3), a connecting pipe (4), and a tubular spring shock absorber (5); the shock absorber (5) is hollow inside and is equipped with a helical spring (6) and a rubber damping layer (7). One end of the discharge pipe (2) is welded to the discharge port at the bottom of the storage tank (1), and the other end is connected to the inlet of the precision metering pump (3). One end of the connecting pipe (4) is connected to the outlet of the metering pump (3), and the other end is connected to one end of the spring shock absorber (5). The mixing assembly includes a cylindrical mixing tank (8), an inlet pipe (9), an outlet pipe, and a dosing nozzle (10); the inlet pipe (9) is inclinedly arranged at the bottom of the mixing tank (8) near the edge, and multiple circular baffles (11) are arranged axially at intervals inside the mixing tank (8). Multiple through holes (12) are evenly distributed on the baffles (11), and the through holes (12) of adjacent baffles (11) are staggered. The outlet pipe is arranged on the side wall of the mixing tank (8); the dosing nozzle (10) is arranged at the top of the cylindrical mixing tank (8); the end of the spring damper (5) away from the connecting pipe (4) is connected to the inlet of the dosing nozzle (10).

2. The automatic dosing device for circulating water according to claim 1, characterized in that, The bottom of the storage tank (1) is an inverted cone-shaped structure, and each storage tank (1) is provided with a liquid level observation window on its side wall, and the surface of the observation window is provided with a scale.

3. The automatic dosing device for circulating water according to claim 1, characterized in that, The spring damper (5) has a through cylindrical cavity inside. The spring damper (5) is located in the cylindrical cavity and is made of stainless steel wire. The inner walls of the spring damper (5) are provided with a ring-shaped limiting platform (13) at both the upper and lower ends. The top end of the helical spring (6) abuts against the lower surface of the upper limiting platform (13) and the bottom end abuts against the upper surface of the lower limiting platform (13). A fluororubber buffer pad with a thickness of 2-3 mm is installed on the surface of the limiting platform (13) in contact with the helical spring (6). The buffer pad is fixed to the surface of the limiting platform (13) by vulcanization. The rubber damping layer (7) is a cylindrical structure made of fluororubber and is tightly wrapped around the outside of the helical spring (6). The inner wall of the rubber damping layer (7) and the helical spring (6) are fixed by vulcanization.

4. The automatic dosing device for circulating water according to claim 3, characterized in that, The surface of the helical spring (6) is uniformly coated with a polytetrafluoroethylene coating with a thickness of 0.1-0.3 mm; the rubber damping layer (7) has a thickness of 6-8 mm.

5. The automatic dosing device for circulating water according to claim 1, characterized in that, The precision metering pump (3) is a plunger-type metering pump (3), and the pump head is made of polytetrafluoroethylene.

6. The automatic dosing device for circulating water according to claim 1, characterized in that, The mixing tank (8) and the baffle plate (11) are connected by bolts; the top of the mixing tank (8) is detachably provided with a top cover.

7. The automatic dosing device for circulating water according to claim 1, characterized in that, The precision metering pump (3) is equipped with a motor drive module, an electromagnetic flow meter is installed on the water inlet pipe (9) of the mixing tank (8), and an electromagnetic valve is installed at the bottom outlet of the storage tank (1). The electromagnetic flow meter, the electromagnetic valve and the motor drive module of the precision metering pump (3) are all electrically connected to the programmable logic controller.

Images