CN220012167U - Chemical adding device for preparing ultrapure water - Google Patents

Abstract

The utility model discloses a dosing device for preparing ultrapure water, which comprises a first bracket, wherein a water storage tank is arranged at the top of the first bracket, and a water injection pipe is arranged at one end of the bottom of the water storage tank; the water injection pipes are arranged in an equidistant manner, the tail end of each water injection pipe is provided with a first control valve, and each first control valve is respectively connected with the lower part of one mixing tank; the three mixing tanks are all arranged at the top end of the second bracket and are distributed at equal intervals; the utility model is provided with the mixing tanks, the motors and the stirring shafts, the mixing tanks are of a cylindrical structure, the stirring shafts are arranged in each mixing tank, the bottom of each stirring shaft is provided with a propeller-shaped stirrer, after medicine is added, the stirring shafts are driven by the motors to rotate in height, so that vortexes can be formed in the mixing tanks, the mixing of liquid medicine can be conveniently completed in a short time, and the processing efficiency is improved.

Description

Chemical adding device for preparing ultrapure water

Technical Field

The utility model particularly relates to the technical field related to ultrapure water preparation, in particular to a dosing device for ultrapure water preparation.

Background

Ultrapure water is also called UP water, which has little impurity except water molecules, no organic matters such as bacteria, viruses, chlorine-containing dioxin and the like, and no mineral trace elements required by human bodies, namely water with almost all atoms except oxygen and hydrogen removed, because a reverse osmosis membrane desalination device is used for concentrating and discharging dissolved solids and utilizing fresh water, in order to prevent concentrated water ends, particularly concentrated water of the last membrane element in an RO pressure container, from crystallizing and separating out when concentration products such as CaCO3 and CaSO4 are larger than equilibrium solubility indexes, thereby damaging application characteristics of the membrane element, the device is matched with a scale inhibitor dosing device before entering the membrane element, and reference is made to publication No: CN217248138U, a disclosed "automatic dosing device for preparing high purity water", comprises a water-making tank and an adjusting mechanism, wherein the adjusting mechanism comprises an L-shaped plate, a storage tank, a liquid inlet pipe, a water pump, a vertical pipe, a square rod and a spring; the rear side fixedly connected with L shaped plate of water making tank, the top fixedly connected with storage box of L shaped plate. According to the utility model, the water pump is started, the medicament is discharged into the two transverse pipes through the vertical pipes, the first motor is started, the moving block is driven to move through the rotation of the screw rod, the connecting rod is extruded through the moving plate, the connecting rod drives the connecting block to move through the vertical plates, and the connecting block drives the two transverse pipes to move downwards through the vertical pipes, so that the positions of the two transverse pipes are adjusted, layered dosing is facilitated, the required stirring time is further reduced, flocs are not easy to disperse again, subsequent filtering operation is facilitated, hydrolysis reaction of high-purity water and aluminum foil in the reaction kettle is facilitated, and high-purity superfine alumina powder is obtained after subsequent treatment.

The prior dosing device is usually used for injecting tap water after sand filtration and carbon filtration into a water tank for dosing and mixing, then the mixed tap water is conveyed to a fine filtration device, the water tank is usually lack of an accurate weighing device, the adding amount of the tap water is required to be judged by observing the water level during use, and water injection is required to be stopped during the mixing process so as to ensure that the adding amount accords with a set proportion, so that the dosing device cannot be continuously supplied, meanwhile, the cross section area of a reservoir is large, the mixing effect can be ensured only after a long time is required during mixing, and the defects exist during use.

Disclosure of Invention

The utility model aims to provide a dosing device for preparing ultrapure water, which aims to solve the problems that in the prior art, the currently used dosing device is used for injecting tap water subjected to sand filtration and carbon filtration into a water tank for dosing and mixing, then the mixed tap water is conveyed to a fine filtration device, the water tank is usually lack of an accurate weighing device, the adding amount of the tap water needs to be judged by observing the water level during use, and water injection needs to be stopped during the mixing process so as to ensure that the adding amount accords with a set proportion, so that continuous supply cannot be realized, meanwhile, the cross section area of a reservoir is large, the mixing effect can be ensured only after long time is required during mixing, and the use has disadvantages.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

a dosing device for preparing ultrapure water comprises a first bracket, wherein a water storage tank is arranged at the top of the first bracket, and a water injection pipe is arranged at one end of the bottom of the water storage tank; the water injection pipes are arranged in an equidistant manner, the tail end of each water injection pipe is provided with a first control valve, and each first control valve is respectively connected with the lower part of one mixing tank; the three mixing tanks are all arranged at the top end of the second bracket and are distributed at equal intervals; a top cover is arranged at the top of each mixing tank, and a motor is arranged at the top of each top cover; the output shaft of each motor is connected with the top end of one stirring shaft respectively, and the stirring shafts are arranged at the bottom of the top cover; a medicine tank is arranged at one end of the top of the water storage tank, and a metering pump is arranged at the bottom of the medicine tank; the metering pumps are arranged in an equidistant mode, and the three metering pumps are respectively connected with the three top covers.

As a further aspect of the utility model: the depth of the water storage groove is gradually reduced from one end of the water injection pipe to the other end of the water storage groove, and the top of the water storage groove is in an open structure.

As a further aspect of the utility model: the axial lead of the mixing tank, the axial lead of the top cover and the axial lead of the stirring shaft are all on the same vertical straight line, the length of the stirring shaft is smaller than the depth of the mixing tank, and meanwhile, the bottom of the mixing tank is of a funnel-shaped structure.

As a further aspect of the utility model: and the upper part of the outer wall of each mixing tank is provided with a vacuum air pump, and each vacuum air pump is respectively communicated with the upper part of one mixing tank.

As a further aspect of the utility model: an adjusting air valve is arranged on the upper portion of the outer wall of each mixing tank, and the height of each adjusting air valve is larger than that of the vacuum air pump.

As a further aspect of the utility model: the bottom of each mixing tank is provided with a second control valve, and each second control valve is respectively matched with a water outlet pipe and connected with the water collecting pipe.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, the first control valve, the mixing tank and the vacuum air pump are arranged, the water storage tank is matched with the three first control valves and the water injection pipe to be respectively communicated with the three mixing tanks, when the three mixing tanks are used, the three first control valves are started according to the set sequence, the first control valves are simultaneously started with the corresponding vacuum air pumps, negative pressure is formed in the corresponding mixing tanks through the vacuum air pumps, water is absorbed from the water storage tank by being matched with the water injection pipe, the water absorption is in direct proportion to the opening time of the vacuum air pumps, so that the water pumping amount can be calculated more accurately, the scale inhibitor is added into the mixing tanks by being synchronously matched with the metering pump respectively, the three mixing tanks work in turn, excessive manual control is not needed, continuous supply is ensured, and the practicability is improved.

2. According to the utility model, the mixing tanks are arranged, each mixing tank is in a state of being isolated from the outside in the mixing process, so that the interference of the external environment to the mixing process can be effectively avoided, and the practicability is improved.

3. The utility model is provided with the mixing tanks, the motors and the stirring shafts, the mixing tanks are of a cylindrical structure, the stirring shafts are arranged in each mixing tank, the bottom of each stirring shaft is provided with a propeller-shaped stirrer, after medicine is added, the stirring shafts are driven by the motors to rotate in height, so that vortexes can be formed in the mixing tanks, the mixing of liquid medicine can be conveniently completed in a short time, and the processing efficiency is improved.

Drawings

Fig. 1 is a schematic perspective view of the present utility model.

Fig. 2 is a rear view of fig. 1 of the present utility model.

Fig. 3 is a bottom view of fig. 1 of the present utility model.

Fig. 4 is a rear view of fig. 3 of the present utility model.

FIG. 5 is a schematic perspective view of a stirring shaft according to the present utility model.

Fig. 6 is a bottom view of fig. 5 in accordance with the present utility model.

In the figure: the device comprises a first bracket, a 2-water storage tank, a 3-water injection pipe, a 4-first control valve, a 5-mixing tank, a 6-second bracket, a 7-top cover, an 8-motor, a 9-stirring shaft, a 10-second control valve, a 11-water outlet pipe, a 12-water collection pipe, a 13-metering pump, a 14-vacuum air pump, a 15-medicine tank and a 16-adjusting air valve.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-6, in an embodiment of the present utility model, a chemical dosing apparatus for preparing ultrapure water includes a first bracket 1, a water storage tank 2 is installed at the top of the first bracket 1, and a water injection pipe 3 is installed at one end of the bottom of the water storage tank 2; three water injection pipes 3 are arranged at equal intervals, the tail end of each water injection pipe 3 is provided with a first control valve 4, and each first control valve 4 is respectively connected with the lower part of a mixing tank 5; the three mixing tanks 5 are all arranged at the top end of the second bracket 6, and the three mixing tanks 5 are distributed at equal intervals; a top cover 7 is arranged at the top of each mixing tank 5, and a motor 8 is arranged at the top of each top cover 7; the output shaft of each motor 8 is respectively connected with the top end of one stirring shaft 9, and the stirring shafts 9 are arranged at the bottom of the top cover 7; a medicine tank 15 is arranged at one end of the top of the water storage tank 2, and a metering pump 13 is arranged at the bottom of the medicine tank 15; the metering pumps 13 are arranged at equal intervals, and the three metering pumps 13 are respectively connected with the three top covers 7.

Specifically, the medicine tank 15 is arranged horizontally, the top end of the medicine tank 15 is provided with a medicine adding port, and the scale inhibitor is a composite organic scale inhibitor (Argo MDC 200).

As a further explanation of the present embodiment, the top cover 7 and the mixing tank 5 are connected by a flange, so that the disassembly and assembly are facilitated.

In this embodiment, the depth of the water storage tank 2 decreases from one end to the other end, where the water injection pipe 3 is installed, and the top of the water storage tank 2 has an open structure.

Specifically, the water is naturally collected in the direction of the water injection pipe 3 by the height difference.

As a further explanation of this embodiment, the open structure of the top of the water reservoir 2 facilitates cleaning the inside of the water reservoir 2.

In this embodiment, the axis of the mixing tank 5, the axis of the top cover 7 and the axis of the stirring shaft 9 are all on the same vertical straight line, and the length of the stirring shaft 9 is smaller than the depth of the mixing tank 5, and meanwhile, the bottom of the mixing tank 5 is in a funnel-shaped structure.

Specifically, a propeller-shaped stirrer is arranged at the bottom of the stirring shaft 9.

As a further explanation of the present embodiment, the stirring shaft 9 is driven to rotate at a high speed by the motor 8.

In this embodiment, a vacuum air pump 14 is installed at the upper portion of the outer wall of each of the mixing tanks 5, and each of the vacuum air pumps 14 is respectively communicated with the upper portion of one of the mixing tanks 5.

Specifically, the internal air pressure of the corresponding mixing tank 5 is regulated by the vacuum air pump 14 to complete water intake and drainage.

As a further explanation of this embodiment, a transparent window structure is provided on one side of the outer wall of each mixing tank 5, so as to facilitate observation of the internal processing state.

In this embodiment, an air adjusting valve 16 is installed on the upper portion of the outer wall of each mixing tank 5, and the height of each air adjusting valve 16 is greater than that of the vacuum air pump 14.

Specifically, the air valve 16 can be manually actuated to facilitate manual adjustment of the internal air pressure of the mixing tank 5 in the event of a failure of the vacuum pump.

As a further illustration of this embodiment, the single maximum fill height of the mixing tank 5 is less than the height at which the regulator valve 16 is connected to the mixing tank 5.

In this embodiment, a second control valve 10 is installed at the bottom of each mixing tank 5, and each second control valve 10 is connected to a water collecting pipe 12 in cooperation with a water outlet pipe 11.

Specifically, the discharge state of the water in the mixing tank 5 is controlled by the second control valve 10.

As a further illustration of this embodiment, the end of the header 12 is flanged to facilitate docking of the fine filter.

The working principle of the utility model is as follows: when the device is used, tap water after primary filtration is firstly injected into the water storage tank 2 for temporary storage, then an external power supply is connected, a first control valve 4 and a corresponding vacuum air pump 14 are started, the internal air of a corresponding mixing tank 5 is pumped out through the vacuum air pump 14, a water injection pipe 3 is matched for pumping quantitative tap water from the water storage tank 2, then the corresponding vacuum air pump 14 and the first control valve 4 are closed, a corresponding metering pump 13 is synchronously started, quantitative scale inhibitor is pumped from the inside of a medicine tank 15 and added into tap water in the mixing tank 5, a corresponding motor 8 is started, a stirring shaft 9 is driven to rotate at a high speed, water and medicine in the mixing tank 5 are quickly mixed, a corresponding second control valve 10 is started, the water after medicine is injected into the water collection pipe 12 in a matched mode of a water outlet pipe 11, and the three mixing tanks 5 are sequentially processed in the same working flow.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims (6)

1. A dosing device for ultrapure water preparation, its characterized in that: the water storage device comprises a first bracket (1), wherein a water storage tank (2) is arranged at the top of the first bracket (1), and a water injection pipe (3) is arranged at one end of the bottom of the water storage tank (2); three water injection pipes (3) are arranged at equal intervals, a first control valve (4) is arranged at the tail end of each water injection pipe (3), and each first control valve (4) is connected with the lower part of a mixing tank (5) respectively; the three mixing tanks (5) are all arranged at the top end of the second bracket (6), and the three mixing tanks (5) are distributed at equal intervals; a top cover (7) is arranged at the top of each mixing tank (5), and a motor (8) is arranged at the top of each top cover (7); the output shaft of each motor (8) is respectively connected with the top end of one stirring shaft (9), and the stirring shafts (9) are arranged at the bottom of the top cover (7); a medicine tank (15) is arranged at one end of the top of the water storage tank (2), and a metering pump (13) is arranged at the bottom of the medicine tank (15); the metering pumps (13) are arranged at equal intervals, and the three metering pumps (13) are respectively connected with the three top covers (7).

2. A dosing device for the preparation of ultra-pure water according to claim 1, wherein: the depth of the water storage groove (2) is gradually reduced from one end of the water injection pipe (3) to the other end, and the top of the water storage groove (2) is in an open structure.

3. A dosing device for the preparation of ultra-pure water according to claim 1, wherein: the axial lead of the mixing tank (5), the axial lead of the top cover (7) and the axial lead of the stirring shaft (9) are all on the same vertical straight line, the length of the stirring shaft (9) is smaller than the depth of the mixing tank (5), and meanwhile, the bottom of the mixing tank (5) is of a funnel-shaped structure.

4. A dosing device for the preparation of ultra-pure water according to claim 1, wherein: a vacuum air pump (14) is arranged on the upper part of the outer wall of each mixing tank (5), and each vacuum air pump (14) is respectively communicated with the upper part of one mixing tank (5).

5. A dosing device for the preparation of ultra-pure water according to claim 1, wherein: an adjusting air valve (16) is arranged at the upper part of the outer wall of each mixing tank (5), and the height of each adjusting air valve (16) is larger than that of the vacuum air pump (14).

6. A dosing device for the preparation of ultra-pure water according to claim 1, wherein: a second control valve (10) is arranged at the bottom of each mixing tank (5), and each second control valve (10) is respectively matched with a water outlet pipe (11) to be connected with a water collecting pipe (12).