Dosing device for preparing ultrapure water

Abstract

The utility model relates to the technical field of ultrapure water preparation, in particular to a dosing device for ultrapure water preparation, which comprises a medicine tank, a water storage tank, a plurality of mixing tanks, a tank cover, an anti-precipitation mechanism and a plurality of medicine delivery pipes, a medicine outlet pump is arranged at one end of each medicine delivery pipe, and a metering pump is arranged on the medicine outlet pump. The anti-precipitation mechanism comprises an anti-precipitation seat, stirring rods and a rotating rod, a vacuum pump is arranged on the outer side of the mixing tank, a stirring shaft is arranged in the mixing tank, a plurality of stirring rods are arranged on the stirring shaft, a water guide pipe is arranged below the mixing tank, and chemicals in the middle and at the bottom of the chemical tank are continuously stirred through the anti-precipitation seat and the stirring rods; the situation that different components are layered due to density difference and are precipitated at the bottom of the medicine tank due to long-time standing of the medicine is avoided, so that it is ensured that the metering pump can effectively extract the medicine, and uniform concentration of the medicine is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of ultrapure water preparation, especially to a dosing device for ultrapure water preparation. BACKGROUND

[0002] In addition to water molecules, there are almost no impurities in ultrapure water, no bacteria, viruses, chlorine dioxin and other organic matter, of course, there is no trace element of mineral substance required by human body, that is, almost all atoms except oxygen and hydrogen are removed, which can be used for the preparation process of ultrapure material application distillation, deionization, reverse osmosis technology or other appropriate supercritical fine technology, and when high-purity water is prepared, the reagent needs to be added to make the reagent flocculate with the impurities in the high-purity water, and then the high-purity water is treated subsequently.

[0003] The prior art patent CN220012167U discloses a dosing device for ultrapure water preparation, which comprises a first support, a water storage tank is installed on the top of the first support, and a water injection pipe is installed at one end of the bottom of the water storage tank; the water injection pipe is arranged at equal intervals and has three, and the end of each water injection pipe is provided with a first control valve, and each first control valve is connected with the lower part of a mixing tank; three mixing tanks are installed at the top of the second support, and the three mixing tanks are arranged at equal intervals; a top cover is installed at the top of each mixing tank, and an electric motor is installed at the top of each top cover; the output shaft of each electric motor is connected with the top end of a stirring shaft, and the stirring shaft is installed at the bottom of the top cover; a medicine tank is installed at one end of the top of the water storage tank, and a metering pump is installed at the bottom of the medicine tank; the metering pump is arranged at equal intervals and has three, and the three metering pumps are connected with the three top covers; the prior art is provided with a mixing tank, an electric motor and a stirring shaft, the mixing tank has a cylindrical structure, and a stirring shaft is installed in each mixing tank, and a propeller-shaped stirrer is arranged at the bottom of the stirring shaft; after adding the medicine, the stirring shaft is driven to rotate by the electric motor, so that a vortex is formed in the mixing tank, which facilitates the mixing of the medicine in a short time and improves the processing efficiency.

[0004] However, in the above-mentioned prior art, the reagent in the medicine tank is prone to stratification due to the density difference of different components in the reagent after long-term standing, and the heavier components precipitate at the bottom of the medicine tank, and the precipitated reagent components may not be effectively extracted by the metering pump, thereby causing uneven concentration of the reagent. UTILITY MODEL CONTENTS

[0005] The utility model discloses a purpose at providing a kind of dosing device for ultrapure water preparation, to solve the technical problem that the different components in medicament in medicine tank are stratified due to the medicament in medicine tank in long time standing, and the heavier component is precipitated in the bottom of medicine tank, and the precipitated medicament component can be difficult to be extracted effectively by metering pump, to cause the uneven concentration of medicament.

[0006] To achieve the above object, the utility model discloses a kind of dosing device for ultrapure water preparation, including medicine tank, water storage tank and multiple mixing tank, the upper portion of the medicine tank is provided with jar cover with screw thread, the anti-precipitation mechanism is provided on the jar cover, and the anti-precipitation mechanism extends into the medicine tank, the outer side of the medicine tank is provided with multiple medicament lead-out pipe, one end of the medicament lead-out pipe is provided with medicament outlet pump, and the medicament outlet pump extends into the medicine tank, metering pump is provided on the medicament outlet pump, the anti-precipitation mechanism includes anti-precipitation seat, agitating rod and rotating rod, one end of the agitating rod is provided with scraper, the outer side of the mixing tank is provided with vacuum pump, stirring shaft is provided in the mixing tank, a plurality of stirring rods are provided on the stirring shaft, and the stirring shaft is driven by first motor, water guide pipe is provided below the mixing tank, the anti-precipitation seat is arranged at one end of the rotating rod, the agitating rod is arranged on the rotating rod, and the scraper is in abutment with the inner wall of the medicine tank, the rotating rod is rotatably connected with the jar cover and located in the jar cover, and the rotating rod is driven by second motor, the medicine tank is arranged above the water storage tank, multiple the mixing tank surrounds the outer side of the water storage tank, and the medicament lead-out pipe is communicated with corresponding the mixing tank, the mixing tank is communicated with the water storage tank by connecting pipe.

[0007] Wherein, the inner bottom of the medicine tank is provided with a cone, and the medicament outlet pump is located between the cone and the anti-precipitation seat, the anti-precipitation seat has two inclined surfaces below, and the two inclined surfaces are in abutment above the cone.

[0008] Wherein, the water storage tank is provided with a water inlet pipe on one side, and a first conical hopper is provided in the inner bottom of the water storage tank, a first water pump is provided on the first conical hopper, a first water outlet pipe is provided at the water outlet end of the first water pump, and the connecting pipe is communicated with the first water outlet pipe.

[0009] Wherein, control valves are provided on the connecting pipe, the water guide pipe and the water inlet pipe, and second conical hoppers are provided in the inner bottom of multiple mixing tanks.

[0010] Wherein, the dosing device for ultrapure water preparation further includes a water collection pipe, multiple water inlet pipes are provided above the water collection pipe, and the water guide pipe is communicated with corresponding the water inlet pipe, and a water outlet pipe is provided below the water collection pipe.

[0011] The utility model discloses a dosing device for ultrapure water preparation, including medicine jar, water storage jar and a plurality of mixing jar, the upper portion of medicine jar is provided with the jar cover of screw thread, be provided with anti -precipitation mechanism on the jar cover, the outside of medicine jar is provided with a plurality of medicine export pipe, the one end of medicine export pipe is provided with medicine water pump, be provided with metering pump on medicine water pump, the anti -precipitation mechanism includes anti -precipitation seat, agitating rod and rotating lever, the one end of agitating rod is provided with the scraper, the outside of mixing jar is provided with vacuum pump, be provided with the stirring shaft in mixing jar, be provided with a plurality of stirring rod on stirring shaft, the below of mixing jar is provided with the water pipe, be equipped with the anti -precipitation mechanism of extending to the medicine jar in the jar cover of screw thread on the upper portion of medicine jar, rotating lever is connected with the jar cover rotation and is driven through the second motor, and the anti -precipitation seat and agitating rod then carry out the sustained agitation of the medicine of the middle part and the bottom of medicine jar, avoid the stratification of different components of medicine because of the density difference and deposit in the bottom of medicine jar because of long -term standing of medicine in medicine jar, and then ensure that metering pump can effectively extract medicine, guarantee the uniformity of medicine concentration, and in this way, the stratification of different components of medicine because of the density difference in medicine in medicine jar because of long -term standing, the heavier deposits in the bottom of medicine jar, and the technical problem that the precipitated medicine component can be effectively extracted from metering pump, thereby causing the uneven concentration of medicine. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to make the technical scheme of the embodiments of the present utility model or the prior art clearer, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description only some embodiments of the present utility model, and for those skilled in the art, other drawings can be obtained without creative labor according to these drawings.

[0013] Figure 1 It is the three-dimensional view of the present utility model.

[0014] Figure 2 It is the front view of the present utility model.

[0015] Figure 3 It is the Figure 2 sectional view of line A-A in the present utility model.

[0016] Figure 4 It is the structure schematic view of anti -precipitation mechanism in the present utility model.

[0017] 1 - medicine tank, 2 - water storage tank, 3 - mixing tank, 4 - tank cover, 5 - medicine guide pipe, 6 - medicine outlet pump, 7 - metering pump, 8 - anti-settling seat, 9 - stirring rod, 10 - rotating rod, 11 - vacuum pump, 12 - stirring shaft, 13 - stirring rod, 14 - first motor, 15 - water guide pipe, 16 - second motor, 17 - cone, 18 - inclined surface, 19 - scraper, 20 - first conical hopper, 21 - first water pump, 22 - first water outlet pipe, 23 - control valve, 24 - second conical hopper, 25 - water collecting pipe, 26 - water guide pipe, 27 - drain pipe, 28 - water inlet pipe, 29 - connecting pipe. DETAILED DESCRIPTION

[0018] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0019] Please refer to Figures 1-4The utility model provides a kind of dosing device for ultrapure water preparation, including medicine jar 1, water storage jar 2 and multiple mixing jar 3, the upper portion of medicine jar 1 is provided with jar cover 4 with screw thread, the jar cover 4 is provided with anti-precipitation mechanism, and the anti-precipitation mechanism extends into the medicine jar 1, the outside of medicine jar 1 is provided with multiple medicine outlet pipe 5, one end of the medicine outlet pipe 5 is provided with medicine outlet pump 6, and the medicine outlet pump 6 extends into the medicine jar 1, the medicine outlet pump 6 is provided with metering pump 7, the anti-precipitation mechanism includes anti-precipitation seat 8, agitating rod 9 and rotating rod 10, one end of the agitating rod 9 is provided with scraper 19, the outside of the mixing jar 3 is provided with vacuum pump 11, the mixing jar 3 is provided with stirring shaft 12, the stirring shaft 12 is provided with multiple stirring rod 13, and the stirring shaft 12 is driven by first motor 14, the lower portion of the mixing jar 3 is provided with water guide pipe 15, the anti-precipitation seat 8 is arranged at one end of the rotating rod 10, the agitating rod 9 is arranged on the rotating rod 10, and the scraper 19 abuts the inner wall of the medicine jar 1, the rotating rod 10 is rotatably connected with the jar cover 4 and located in the jar cover 4, and the rotating rod 10 is driven by second motor 16, the medicine jar 1 is arranged above the water storage jar 2, multiple mixing jar 3 surrounds the outside of the water storage jar 2, and the medicine outlet pipe 5 is communicated with corresponding mixing jar 3, the mixing jar 3 is communicated with the water storage jar 2 through connecting pipe 29, by being provided with the jar cover 4 with the anti-precipitation mechanism above the medicine jar 1, and the anti-precipitation mechanism extends into the medicine jar 1, the anti-precipitation mechanism includes the rotating rod 10 driven by the second motor 16 and the agitating rod 9 and anti-precipitation seat 8 driven by the rotating rod 10, can continuously stir the medicine in the medicine jar 1, effectively prevent medicine from stratification and precipitation phenomenon due to long-term standing, ensure the uniformity of medicine composition, simultaneously, the scraper 19 can facilitate to scrape the inner wall of the medicine jar 1, the medicine outlet pump 6 cooperates with the metering pump 7, can accurately control the extraction amount of medicine, ensure that the dosage of medicine added into the mixing jar 3 is accurate, the vacuum pump 11 outside the mixing jar 3 and the stirring shaft 12 and the stirring rod 13 inside are driven under the first motor 14, and the medicine and water in the mixing jar 3 are fully mixed, improve mixing effect, multiple mixing jar 3 is arranged around the outside of the water storage jar 2, and the medicine and water are orderly transported through the medicine outlet pipe 5 and the connecting pipe 29, overall structure is compact, layout is reasonable, can efficiently complete medicine adding and mixing procedure in ultrapure water preparation process, guarantee the quality and stability of ultrapure water preparation.

[0020] The inner bottom of the medicine tank 1 is provided with a conical body 17, and the medicine outlet pump 6 is located between the conical body 17 and the anti-deposition seat 8, the anti-deposition seat 8 has two inclined surfaces 18 below, and the two inclined surfaces 18 are above the conical body 17, which helps to guide the flow of the medicine and further reduces the residue of the medicine at the bottom of the medicine tank 1, improves the extraction efficiency of the medicine, and at the same time, cooperates with the stirring action of the anti-deposition mechanism, which can more thoroughly avoid the deposition of the medicine, ensures the uniformity of the concentration of the medicine extracted by the medicine outlet pump 6, provides stable medicine supply for the subsequent mixing process, and improves the accuracy and reliability of the preparation of ultrapure water.

[0021] Secondly, one side of the water storage tank 2 is provided with a water inlet pipe 28, and the inner bottom of the water storage tank 2 is provided with a first conical hopper 20, and the first conical hopper 20 is provided with a first water pump 21, and the water outlet end of the first water pump 21 is provided with a first water outlet pipe 22, and the connecting pipe 29 is in communication with the first water outlet pipe 22, and the design of the first conical hopper is conducive to the accumulation and discharge of water in the water storage tank 2, and the first water pump 21 can transport the water in the water storage tank 2 to the mixing tank 3 through the first water outlet pipe 22 and the connecting pipe 29, realizing the mixing of water and medicine. This structure ensures smooth water delivery process and can accurately control the water delivery amount, which matches the amount of medicine added, ensures the accurate ratio of water and medicine in the mixing tank 3, and helps to improve the quality and efficiency of ultrapure water preparation.

[0022] Thirdly, the connecting pipe 29, the water guide pipe 15 and the water inlet pipe 28 are all provided with control valves 23, and the inner bottoms of multiple mixing tanks 3 are all provided with second conical hoppers 24. The control valves 23 can accurately control the delivery process of the medicine and water respectively, and can flexibly adjust the flow and delivery time according to actual needs to meet the requirements of different ultrapure water preparation processes. The second conical hoppers 24 are helpful for the accumulation and discharge of liquid in the tank to avoid liquid residue in the tank.

[0023] In addition, the medicine adding device for ultrapure water preparation further comprises a water collecting pipe 25, a plurality of water guide pipes 26 are arranged above the water collecting pipe 25, and the water guide pipe 15 is in communication with the corresponding water guide pipe 26. The lower part of the water collecting pipe 25 is provided with a drain pipe 27, which facilitates the discharge of the mixed liquid through the water collecting pipe 25, the water guide pipe 26 and the drain pipe 27 for subsequent ultrapure water preparation treatment.

[0024] In the utility model, the metering pump 7 can cooperate with the float ball liquid level meter and the PLC control system to realize dynamic proportioning of the chemical liquid and the pure water, the float ball liquid level meter monitors the liquid level change in the chemical tank in real time and feeds back the signal to the PLC control system, the PLC system dynamically adjusts the working state of the metering pump according to the preset proportioning algorithm, accurately controls the extraction amount of the chemical liquid, simultaneously adjusts the conveying speed of the pure water in the chemical tank according to the data of the float ball liquid level meter, realizes accurate proportioning and dynamic mixing of the chemical liquid and the pure water, in this way, not only the uniformity of the medicament concentration can be ensured, but also the precision and efficiency of the preparation of ultrapure water are improved, so that the whole dosing device is more intelligent and automatic.

[0025] In use of the utility model, through the water to be treated enters the water storage tank 2 from the water inlet pipe 28 on one side of the water storage tank 2, the corresponding internal air of the mixing tank 3 is extracted through the vacuum pump 11, then the first water pump 21 conveys water to the mixing tank 3 arranged around the outer side of the water storage tank 2 through the first water outlet pipe 22 and the connecting pipe 29, the anti-settling mechanism extending into the tank is arranged on the tank cover 4 threadedly connected to the top of the chemical tank 1, the second motor 16 drives the rotating rod 10 to rotate, the stirring rod 9 agitates the medicament in the chemical tank 1, and the anti-settling seat 8 agitates the medicament on the conical body 17 to prevent settling, the medicament outlet pump 6 accurately extracts the medicament to the corresponding mixing tank 3 under the cooperation of the metering pump 7, the first motor 14 drives the stirring shaft 12 to drive the stirring rod 13 to stir, so that the medicament and water are fully mixed, the mixed liquid is collected to the water collecting pipe 25 through the water guide pipe 15 below the mixing tank 3, the water guide pipe 26 above the water collecting pipe 25, and finally discharged from the drain pipe 27 below the water collecting pipe 25, the dosing and mixing process is completed, and conditions are provided for subsequent ultrapure water preparation, so that the technical problem that different components in the medicament in the chemical tank 1 are stratified due to long-time standing of the medicament, the heavy components are settled at the bottom of the chemical tank 1, and the settled medicament components can not be effectively extracted by the metering pump 7, thereby causing uneven medicament concentration, is solved.

[0026] The above disclosed is only a preferred embodiment of the utility model, of course, cannot with this to limit the utility model right range, the person skilled in the art can understand that the whole or part of the above-mentioned embodiment is realized, and the equivalent change made according to the utility model claim still belongs to the range covered by the utility model.

Claims

1. A dosing device for ultrapure water preparation, characterized in that, The system includes a medicine tank, a water storage tank, and multiple mixing tanks. A lid is threaded onto the top of the medicine tank, and the lid is equipped with an anti-settling mechanism that extends into the medicine tank. Multiple medicine outlet pipes are located on the outside of the medicine tank, and a medicine outlet pump is connected to one end of each outlet pipe, extending into the medicine tank. A metering pump is mounted on the medicine outlet pump. The anti-settling mechanism includes an anti-settling seat, a stirring rod, and a rotating rod. A scraper is attached to one end of the stirring rod. A vacuum pump is located on the outside of the mixing tank, and a stirring shaft is located inside the mixing tank. The mixing tank is equipped with multiple stirring rods, and the stirring shaft is driven by a first motor. A water guide pipe is provided below the mixing tank. The anti-sedimentation seat is located at one end of the rotating rod. The stirring rod is located on the rotating rod, and the scraper abuts against the inner wall of the medicine tank. The rotating rod is rotatably connected to the tank cover and is located inside the tank cover. The rotating rod is driven by a second motor. The medicine tank is located above the water storage tank. Multiple mixing tanks surround the outside of the water storage tank, and the medicine outlet pipe is connected to the corresponding mixing tank. The mixing tank is connected to the water storage tank through a connecting pipe.

2. The dosing device for ultrapure water preparation as described in claim 1, characterized in that, The bottom of the medicine container is provided with a cone shape, and the medicine outlet pump is located between the cone shape and the anti-settling seat. The anti-settling seat has two inclined surfaces at the bottom, and the two inclined surfaces abut against the top of the cone shape.

3. The dosing device for ultrapure water preparation as described in claim 2, characterized in that, A water inlet pipe is provided on one side of the water storage tank, and a first conical hopper is provided at the bottom of the water storage tank. A first water pump is provided on the first conical hopper, and a first water outlet pipe is provided at the outlet end of the first water pump. The connecting pipe is connected to the first water outlet pipe.

4. The dosing device for ultrapure water preparation as described in claim 3, characterized in that, Control valves are provided on the connecting pipe, the water guide pipe, and the water inlet pipe, and a second conical hopper is provided at the bottom of each of the multiple mixing tanks.

5. The dosing device for ultrapure water preparation as described in claim 4, characterized in that, The dosing device for ultrapure water preparation also includes a water collection pipe, with multiple water inlet pipes above the water collection pipe and the water guide pipes connected to the corresponding water inlet pipes. A drain pipe is provided below the water collection pipe.

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