Preparation device of standard liquid for testing water efficiency of water purifier

Abstract

The utility model discloses a preparation device of a standard solution for testing the water efficiency of a water purifier. The preparation device is characterized by comprising at least one concentrated solution storage tank (1), a pure water input port of each standard liquid adding storage tank (2) is connected with a pure water input pipeline (21), a concentrated solution input port of each standard liquid adding storage tank (2) is connected with a concentrated solution output port of each concentrated solution storage tank (1) through a concentrated solution input pipeline (22), a liquid inlet valve (221) is installed on the concentrated solution input pipeline (22), and a liquid outlet valve (221) is installed on the concentrated solution input pipeline (22). A standard liquid adding output port of each standard liquid adding storage tank (2) is connected with a downstream water purifier through a standard liquid adding output pipeline (23), and a liquid outlet valve (231) is mounted on each standard liquid adding output pipeline (23). Compared with the prior art, the preparation device of the standard liquid for testing the water efficiency of the water purifier can continuously supply the standard liquid to the water purifier.

Description

Technical Field

[0001] The utility model relates to the technical field of solution preparation, in particular to a device for preparing a spiked solution for water efficiency testing of a water purifier. Background Art

[0002] At present, all third-party testing agencies and internal laboratories of enterprises are carrying out water efficiency tests for water purifiers. The spiked solution used in the water efficiency test is made by mixing pure water with four main reagents: calcium chloride dihydrate, magnesium sulfate heptahydrate, sodium chloride, and sodium bicarbonate, and then mixing with a small amount of sodium hypochlorite and hydrochloric acid solution. To prepare a certain volume of spiked solution, it is generally common to weigh a certain mass of reagents, dissolve the reagents in pure water according to the standard, and then add them to the preparation bucket in order and stir for use.

[0003] At present, the method of automatically preparing water efficiency spiked liquid is not popular in the market, and it is generally prepared manually according to the standard. On the one hand, only one barrel of spiked liquid can be prepared in one preparation operation, which requires a large workload and low efficiency; on the other hand, the consistency of manual operation is poor, and the concentration deviation of the spiked liquid prepared each time is large. To this end, the Chinese patent "Water Purification Equipment Performance Test System Based on Automatic Spiking" with patent application number CN202120417548.1 controls each controlled component and controlled equipment through the control panel, and realizes precise control of the type of spiked agent to be added, the output dosage of the spiked agent, and the output dosage of the spiked liquid. The entire test process does not require human participation, and realizes automatic spike addition and automatic measurement of the water purification equipment performance test, thereby improving the test efficiency.

[0004] However, in the above solution, the spiked liquid needs to be re-prepared after it is used up, and cannot be continuously supplied to the water purifier. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a device for preparing spiked liquid for water efficiency testing of a water purifier, which can continuously supply spiked liquid to the water purifier, in view of the current status of the prior art.

[0006] The technical solution adopted by the utility model to solve the above technical problems is: a device for preparing spiked liquid for water purifier water efficiency test, characterized by comprising:

[0007] at least one concentrated solution storage tank, used for storing a concentrated solution prepared by a spiked agent and pure water, and having a concentrated solution output port; and

[0008] At least two spiked liquid storage boxes are provided with a pure water input port, a concentrated solution input port and a spiked liquid output port. The pure water input port of each spiked liquid storage box is connected to a pure water input pipeline, a water replenishment valve is installed on the pure water input pipeline, the concentrated solution input port of each spiked liquid storage box is connected to the concentrated solution output port of each concentrated solution storage box through a concentrated solution input pipeline, a liquid inlet valve is installed on the concentrated solution input pipeline, the spiked liquid output port of each spiked liquid storage box is connected to a downstream water purifier through a spiked liquid output pipeline, and a liquid outlet valve is installed on the spiked liquid output pipeline.

[0009] In order to achieve constant water temperature of the spiked liquid, a constant temperature unit with a liquid inlet and a liquid outlet is also included. The spiked liquid storage box has a liquid outlet and a liquid return port. The liquid inlet of the constant temperature unit is connected to the liquid outlet of each of the spiked liquid storage boxes, and the liquid return port of each of the spiked liquid storage boxes is connected to the liquid outlet of the constant temperature unit.

[0010] In order to avoid cross-flow of fluids in different spiked liquid storage tanks, a first valve is provided on the pipeline between the liquid inlet of the constant temperature unit and the liquid outlet of the spiked liquid storage tank, and a second valve is provided on the pipeline between the liquid return port of the spiked liquid storage tank and the liquid outlet of the constant temperature unit.

[0011] In order to detect the spiked liquid, each of the spiked liquid storage boxes has a detection liquid output port, which is connected to an external water quality detector through a detection liquid output pipeline, and a self-priming pump is installed on the detection liquid output pipeline.

[0012] In order to conveniently empty the spiked liquid, each of the spiked liquid storage boxes has a liquid discharge port, the liquid discharge port is connected to a liquid discharge pipeline, and a drain valve is installed on the liquid discharge pipeline.

[0013] In order to accelerate the mixing of the concentrated solution and the pure water, a stirrer is installed in each of the spiked solution storage boxes.

[0014] In order to realize the automatic delivery of the spiked liquid, a liquid outlet pump is installed on each of the spiked liquid output pipelines.

[0015] In order to simplify the structure, one liquid outlet pump is omitted, and each of the spiked liquid output pipelines shares the same downstream section. The liquid outlet valve and the liquid outlet pump are respectively installed in the upstream section and downstream section of the spiked liquid output pipeline.

[0016] In order to simplify the structure and ensure the uninterrupted supply of the spiked liquid, the number of the spiked liquid storage tanks is two, which are respectively recorded as the first spiked liquid storage tank and the second spiked liquid storage tank;

[0017] The device for preparing spiked solution for water purifier water efficiency test has at least two states:

[0018] In the first state, the liquid inlet valve corresponding to the first spiked liquid storage tank is opened, and the liquid outlet valve is closed, and the liquid inlet valve corresponding to the second spiked liquid storage tank is closed, and the liquid outlet valve is opened;

[0019] In the second state, the liquid inlet valve corresponding to the first spiked liquid storage tank is closed, and the liquid outlet valve is opened, and the liquid inlet valve corresponding to the second spiked liquid storage tank is opened, and the liquid outlet valve is closed.

[0020] Preferably, the number of the concentrated solution storage tanks is four, which are respectively used to store a concentrated solution of calcium chloride dihydrate, a concentrated solution of magnesium sulfate heptahydrate, a concentrated solution of sodium chloride and a concentrated solution of sodium bicarbonate.

[0021] Compared with the prior art, the utility model has the advantage that the spiked solution is prepared by cooperating with at least two spiked solution storage tanks and at least one concentrated solution storage tank, and the spiked solution can be continuously supplied to the water purifier. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The present invention is a schematic structural diagram of an embodiment of a device for preparing spiked liquid for testing water efficiency of a water purifier according to the present invention. DETAILED DESCRIPTION

[0023] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0024] like Figure 1 The figure shows a preferred embodiment of the device for preparing spiked solution for water purifier water efficiency test of the utility model. The device for preparing spiked solution for water purifier water efficiency test comprises a concentrated solution storage tank 1, a spiked solution storage tank 2 and a constant temperature unit 3.

[0025] The number of concentrated solution storage tanks 1 is at least one, and each concentrated solution storage tank 1 is used to store a concentrated solution prepared by a spiked agent and pure water, and each concentrated solution storage tank 1 has a concentrated solution outlet at the top. In this embodiment, the number of concentrated solution storage tanks 1 is four, which are respectively used to store a concentrated solution of calcium chloride dihydrate, a concentrated solution of magnesium sulfate heptahydrate, a concentrated solution of sodium chloride, and a concentrated solution of sodium bicarbonate.

[0026] The number of the spiked liquid storage boxes 2 is at least two, the top of each spiked liquid storage box 2 has a pure water input port and a concentrated solution input port, the bottom of each spiked liquid storage box 2 has a spiked liquid output port and a drain port, and the side of each spiked liquid storage box 2 has a test liquid output port, a liquid outlet port and a liquid return port.

[0027] Specifically, each spiked liquid storage tank 2 is equipped with an agitator 20;

[0028] The pure water input port of each spiked liquid storage box 2 is connected to a pure water input pipeline 21, and a water replenishment valve 211 is installed on the pure water input pipeline 21;

[0029] The concentrated solution input port of each spiked solution storage tank 2 is connected to the concentrated solution output port of each concentrated solution storage tank 1 through a concentrated solution input pipe 22, and a liquid inlet valve 221 is installed on the concentrated solution input pipe 22;

[0030] The spiked liquid output port of each spiked liquid storage box 2 is connected to the downstream water purifier through a spiked liquid output pipeline 23, and a liquid outlet valve 231 and a liquid outlet pump 232 are installed on the spiked liquid output pipeline 23; in this embodiment, each spiked liquid output pipeline 23 shares the same downstream section, and the above-mentioned liquid outlet valve 231 and liquid outlet pump 232 are respectively installed in the upstream section and downstream section of the spiked liquid output pipeline 23;

[0031] The test liquid output port of each spiked liquid storage box 2 is connected to an external water quality detector via a test liquid output pipeline 24, and a self-priming pump 241 is installed on the test liquid output pipeline 24;

[0032] The discharge port of each spiked liquid storage box 2 is connected to a discharge pipeline 25 , and a drain valve 251 is installed on the discharge pipeline 25 .

[0033] In this embodiment, the number of the spiked liquid storage tanks 2 is two, which are respectively recorded as the first spiked liquid storage tank and the second spiked liquid storage tank. The spiked liquid preparation device for water purifier water efficiency test has at least two states:

[0034] In the first state, the liquid inlet valve 221 corresponding to the first spiked liquid storage tank is opened, and the liquid outlet valve 231 is closed, the first spiked liquid storage tank is in the liquid preparation mode, the liquid inlet valve 221 corresponding to the second spiked liquid storage tank is closed, and the liquid outlet valve 231 is opened, the second spiked liquid storage tank is in the liquid supply mode;

[0035] In the second state, the liquid inlet valve 221 corresponding to the first spiked liquid storage tank is closed, and the liquid outlet valve 231 is opened, and the first spiked liquid storage tank is in the liquid supply mode, the liquid inlet valve 221 corresponding to the second spiked liquid storage tank is opened, and the liquid outlet valve 231 is closed, and the second spiked liquid storage tank is in the liquid preparation mode.

[0036] The thermostatic unit 3 has a liquid inlet and a liquid outlet. The liquid inlet of the thermostatic unit 3 is connected to the liquid outlet of each spiked liquid storage tank 2, and a first valve 31 is provided on the pipeline between the liquid inlet of the thermostatic unit 3 and the liquid outlet of the spiked liquid storage tank 2; the liquid return port of each spiked liquid storage tank 2 is connected to the liquid outlet of the thermostatic unit 3, and a second valve 32 is provided on the pipeline between the liquid return port of the spiked liquid storage tank 2 and the liquid outlet of the thermostatic unit 3, so as to avoid cross-flow of fluids in different spiked liquid storage tanks 2.

[0037] The working principle of this embodiment is as follows:

[0038] (1) Weigh 6275 g of calcium chloride dihydrate, 5262.5 g of magnesium sulfate heptahydrate, 1975 g of sodium chloride, and 6632.5 g of sodium bicarbonate reagent into four concentrated solution storage tanks 1, add pure water to 50 L, 50 L, 50 L, and 87.5 L, respectively, turn on a stirring device (not shown) until there is no solid reagent and the reagent is completely dissolved, and set aside;

[0039] (2) Turn on the automatic mode of the control system:

[0040] The spiked solution storage tank 2 automatically adds pure water to 1 ton, and the dosing pump (not shown in the figure) automatically extracts 2L of calcium chloride dihydrate concentrated solution, 2L of magnesium sulfate heptahydrate concentrated solution, 2L of sodium chloride concentrated solution, and 3.5L of sodium bicarbonate concentrated solution. The stirrer 20 automatically stirs for 2 minutes until the mixture is uniform. The constant temperature unit 3 is started to automatically keep the water temperature constant at 25°C. The water quality detector detects the total hardness, alkalinity, conductivity, pH, and turbidity indicators of the spiked water. If they meet the requirements (hardness 230-270mg / L, turbidity 0-1NTU, Ph7-7.5, conductivity 900-1100μS / cm, alkalinity 130-150mg / L), the spiked solution is supplied to the water purifier. If the indicators do not meet the requirements, the manual operation is prompted to supplement the reagent or the concentrated solution extraction amount;

[0041] After the first spiked liquid storage tank starts to supply spiked liquid, the second spiked liquid storage tank starts to automatically add pure water and dispense medicines. The logic is the same as that of the first spiked liquid storage tank. After the spiked liquid in the first spiked liquid storage tank is consumed, it automatically switches to the second spiked liquid storage tank for water supply, and so on.

[0042] After 25 barrels of spiked water are prepared, repeat "Specific Step 1" and repeat this process to achieve 24-hour uninterrupted automatic preparation of spiked solution for water purifier water efficiency testing.

[0043] In addition, if you need to change the concentration parameters of the spiked solution, you only need to change the amount of concentrated solution pumped by the dosing pump.

[0044] In the above scheme, only 4 barrels of concentrated solution need to be prepared at one time to realize the automatic preparation of 25 times of spiked water, reducing the workload of personnel; the 25 times of automatically prepared spiked water are accurately extracted and prepared by the metering pump, with good consistency, and the concentration value deviation of the spiked solution is less than 2%.

Claims

1. A device for preparing spiked solution for water purifier water efficiency test, characterized in that Included are: At least one concentrated solution storage tank (1), used for storing a concentrated solution prepared by adding a spiked agent and pure water, and having a concentrated solution output port; as well as At least two spiked liquid storage boxes (2) have a pure water input port, a concentrated solution input port and a spiked liquid output port. The pure water input port of each spiked liquid storage box (2) is connected to a pure water input pipeline (21), and a water replenishment valve (211) is installed on the pure water input pipeline (21). The concentrated solution input port of each spiked liquid storage box (2) is connected to the concentrated solution output port of each concentrated solution storage box (1) through a concentrated solution input pipeline (22), and a liquid inlet valve (221) is installed on the concentrated solution input pipeline (22). The spiked liquid output port of each spiked liquid storage box (2) is connected to a downstream water purifier through a spiked liquid output pipeline (23), and a liquid outlet valve (231) is installed on the spiked liquid output pipeline (23).

2. The device for preparing spiked solution for water purifier water efficiency test according to claim 1, characterized in that: It also includes a constant temperature unit (3) having a liquid inlet and a liquid outlet, the spiked liquid storage box (2) having a liquid outlet and a liquid return port, the liquid inlet of the constant temperature unit (3) being connected to the liquid outlet of each of the spiked liquid storage boxes (2), and the liquid return port of each of the spiked liquid storage boxes (2) being connected to the liquid outlet of the constant temperature unit (3).

3. The device for preparing spiked solution for water purifier water efficiency test according to claim 2, characterized in that: A first valve (31) is provided on the pipeline between the liquid inlet of the thermostatic unit (3) and the liquid outlet of the spiked liquid storage tank (2), and a second valve (32) is provided on the pipeline between the liquid return port of the spiked liquid storage tank (2) and the liquid outlet of the thermostatic unit (3).

4. The device for preparing spiked solution for water purifier water efficiency test according to claim 1, characterized in that: Each of the spiked liquid storage boxes (2) has a test liquid output port, which is connected to an external water quality detector via a test liquid output pipeline (24), and a self-priming pump (241) is installed on the test liquid output pipeline (24).

5. The device for preparing spiked solution for water purifier water efficiency test according to claim 1, characterized in that: Each of the spiked liquid storage boxes (2) has a liquid discharge port, the liquid discharge port is connected to a liquid discharge pipeline (25), and a drain valve (251) is installed on the liquid discharge pipeline (25).

6. The device for preparing spiked solution for water purifier water efficiency test according to claim 1, characterized in that: A stirrer (20) is installed in each of the spiked liquid storage boxes (2).

7. The device for preparing spiked solution for water purifier water efficiency test according to claim 1, characterized in that: A liquid outlet pump (232) is installed on each of the spiked liquid output pipes (23).

8. The device for preparing spiked solution for water purifier water efficiency test according to claim 7, characterized in that: Each of the spiked liquid output pipelines (23) shares the same downstream section, and the liquid outlet valve (231) and the liquid outlet pump (232) are respectively installed in the upstream section and downstream section of the spiked liquid output pipeline (23).

9. The device for preparing spiked solution for water purifier water efficiency test according to any one of claims 1 to 8, characterized in that: The number of the spiked solution storage tanks (2) is two, which are respectively referred to as a first spiked solution storage tank and a second spiked solution storage tank; The device for preparing spiked solution for water purifier water efficiency test has at least two states: In a first state, the liquid inlet valve (221) corresponding to the first spiked liquid storage tank is opened, and the liquid outlet valve (231) is closed, and the liquid inlet valve (221) corresponding to the second spiked liquid storage tank is closed, and the liquid outlet valve (231) is opened; In the second state, the liquid inlet valve (221) corresponding to the first spiked liquid storage tank is closed, and the liquid outlet valve (231) is opened; the liquid inlet valve (221) corresponding to the second spiked liquid storage tank is opened, and the liquid outlet valve (231) is closed.

10. The device for preparing spiked solution for water purifier water efficiency test according to any one of claims 1 to 8, characterized in that: The number of the concentrated solution storage tanks (1) is four, which are used to store calcium chloride dihydrate concentrated solution, magnesium sulfate heptahydrate concentrated solution, sodium chloride concentrated solution and sodium bicarbonate concentrated solution respectively.

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