Ultrafiltration circulating cleaning device

Abstract

The utility model discloses an ultrafiltration circulating cleaning device which comprises a cleaning water tank, a liquid level meter, a cleaning pump, a medicament storage tank, a medicament pushing pump and a plurality of pipelines, a first liquid inlet of the cleaning water tank is communicated with an external liquid inlet terminal through a first pipeline, and a first control valve is mounted on the first pipeline; a second liquid inlet of the cleaning water tank is communicated with an ultrafiltration liquid outlet of the ultrafiltration device through a second pipeline; a water tank liquid outlet of the cleaning water tank is communicated with a third liquid inlet of the cleaning water tank through a third pipeline and a fourth pipeline in sequence, a cleaning pump is mounted on the third pipeline, and a second control valve is mounted on the fourth pipeline; a water tank liquid outlet of the cleaning water tank is communicated with an ultrafiltration liquid inlet of the ultrafiltration device through a third pipeline and a fifth pipeline in sequence; and a third control valve and a fourth control valve are mounted on the fifth pipeline. The cleaning device is simple in structure and capable of achieving circulating cleaning and saving chemicals.

Description

Technical Field

[0001] The utility model specifically relates to an ultrafiltration circulation cleaning device. Background Art

[0002] In membrane water treatment systems, ultrafiltration is usually used as one of the key treatment units to remove pollutants such as SS and microorganisms. Ultrafiltration has the characteristics of energy saving, small footprint, and high water quality. However, ultrafiltration requires regular cleaning and maintenance of reagents.

[0003] During ultrafiltration backwashing, the reagent concentrate is directly added to the outlet of the backwash pump to enter the ultrafiltration system to configure a cleaning liquid of a certain concentration. The cleaning liquid is directly discharged after ultrafiltration.

[0004] The traditional cleaning process is relatively complicated and time-consuming, and the concentration of the reagent added at one time is high. It is used up once and discharged, and the cost of the reagent and the cost of cleaning wastewater treatment are high. Utility Model Content

[0005] In order to solve the above technical problems, the utility model proposes an ultrafiltration circulation cleaning device.

[0006] In order to achieve the above object, the technical solution of the utility model is as follows:

[0007] The utility model discloses an ultrafiltration circulation cleaning device, comprising: a cleaning water tank, a liquid level meter, a cleaning pump, a medicine storage box, a medicine push pump and a plurality of pipelines;

[0008] The medicine push pump is used to push the medicine in the medicine storage box into the cleaning water tank;

[0009] The level meter is used to measure the liquid level in the cleaning water tank;

[0010] The first liquid inlet of the cleaning water tank is connected to the external liquid inlet terminal through a first pipeline, and a first control valve is installed on the first pipeline;

[0011] The second liquid inlet of the cleaning water tank is connected to the ultrafiltration liquid outlet of the ultrafiltration device through a second pipeline;

[0012] The water tank liquid outlet of the cleaning water tank is connected to the third liquid inlet of the cleaning water tank through the third pipeline and the fourth pipeline in sequence, and a cleaning pump is installed on the third pipeline, and a second control valve is installed on the fourth pipeline;

[0013] The water tank liquid outlet of the cleaning water tank is connected with the ultrafiltration liquid inlet of the ultrafiltration device through the third pipeline and the fifth pipeline in sequence, and the third control valve and the fourth control valve are installed on the fifth pipeline.

[0014] Based on the above technical solution, the following improvements can be made:

[0015] As a preferred solution, a check valve is also installed on the third pipeline.

[0016] As a preferred solution, a fifth control valve and a sixth control valve are further installed on the third pipeline, the fifth control valve is installed at the inlet of the cleaning pump, and the sixth control valve is installed at the outlet of the cleaning pump.

[0017] As a preferred solution, a filter is installed on the third pipeline, and the filter is installed at the outlet of the cleaning pump.

[0018] As a preferred solution, the bottom of the cleaning water tank is of a conical structure, the drain outlet of the cleaning water tank is connected to a drain pipe, and a drain valve is installed on the drain pipe.

[0019] As a preferred solution, the ultrafiltration circulation cleaning device also includes: a pH meter, which is used to detect the pH value of the liquid in the cleaning water tank.

[0020] As a preferred solution, the ultrafiltration liquid inlet of the ultrafiltration device is connected to the gas storage tank through the sixth pipeline, and the seventh control valve is installed on the sixth pipeline. The ultrafiltration liquid outlet of the ultrafiltration device is connected to the exhaust pipe, and an exhaust valve is installed on the exhaust pipe.

[0021] As a preferred solution, an eighth control valve is installed on the second pipeline.

[0022] As a preferred solution, a flow meter is installed on the sixth pipeline.

[0023] As a preferred solution, an air tightness detection device is installed on the sixth pipeline.

[0024] The utility model discloses an ultrafiltration circulation cleaning device with a simple structure. Different from the existing method, the utility model eliminates the addition of medicine during regular backwashing according to the characteristics of the ultrafiltration device, utilizes a cleaning water tank and a cleaning pump to perform circulation cleaning during the cleaning cycle, discharges the cleaning agent regularly, and replenishes the lost agent through the agent push pump, thereby realizing circulation cleaning and saving agents. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 This is one of the structural schematic diagrams of the ultrafiltration circulation cleaning device provided in an embodiment of the utility model.

[0027] Figure 2The second structural schematic diagram of the ultrafiltration circulation cleaning device provided in the embodiment of the utility model.

[0028] Among them: 1-cleaning water tank, 2-liquid level meter, 3-cleaning pump, 4-medicine storage tank, 5-medicine push pump, 61-first pipeline, 62-second pipeline, 63-third pipeline, 64-fourth pipeline, 65-fifth pipeline, 66-sixth pipeline, 67-drain pipe, 68-exhaust pipe, 71-first control valve, 72-second control valve, 73-third control valve, 74-fourth control valve, 75-fifth control valve, 76-sixth control valve, 77-seventh control valve, 78-eighth control valve, 79-drain valve, 710-check valve, 711-exhaust valve, 8-ultrafiltration device, 91-gas storage tank connection, 92-flow meter, 93-air tightness detection device, 94-PH meter. DETAILED DESCRIPTION

[0029] The preferred embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] Meanwhile, expressions such as “first” and “second” are only used to distinguish multiple configurations, rather than to limit the order between configurations or other features.

[0032] In addition, the expression of “comprising” an element is an “open” expression, which simply means that a corresponding component exists, and should not be interpreted as excluding additional components.

[0033] In order to achieve the purpose of the utility model, in some embodiments of the ultrafiltration circulation cleaning device, as Figure 1 As shown, the ultrafiltration circulation cleaning device includes: a cleaning water tank 1, a liquid level meter 2, a cleaning pump 3, a medicine storage tank 4, a medicine push pump 5 and a plurality of pipelines;

[0034] The medicine push pump 5 is used to push the medicine in the medicine storage box 4 into the cleaning water tank 1;

[0035] The liquid level meter 2 is used to measure the liquid level in the cleaning water tank 1;

[0036] The first liquid inlet of the cleaning water tank 1 is connected to an external liquid inlet terminal (such as a tap) through a first pipeline 61, and a first control valve 71 is installed on the first pipeline 61;

[0037] The second liquid inlet of the cleaning water tank 1 is connected to the ultrafiltration liquid outlet of the ultrafiltration device 8 through the second pipeline 62;

[0038] The water tank liquid outlet of the cleaning water tank 1 is connected to the third liquid inlet of the cleaning water tank 1 through the third pipeline 63 and the fourth pipeline 64 in sequence, and the cleaning pump 3 is installed on the third pipeline 63, and the second control valve 72 is installed on the fourth pipeline 64;

[0039] The water tank outlet of the cleaning water tank 1 is connected to the ultrafiltration liquid inlet of the ultrafiltration device 8 through the third pipeline 63 and the fifth pipeline 65 in sequence, and the third control valve 73 and the fourth control valve 74 are installed on the fifth pipeline 65.

[0040] The bottom of the cleaning water tank 1 is in a conical structure. The drain outlet of the cleaning water tank 1 is connected to a drain pipe 67 , and a drain valve 79 is installed on the drain pipe 67 .

[0041] The workflow of this utility model is as follows:

[0042] Step 1: Configuration of cleaning liquid: Set the liquid level meter 2 according to the set dilution ratio of the reagent, open the first control valve 71, and the liquid in the cleaning water tank 1 will increase slowly.

[0043] When the set liquid level is reached, the agent push pump 5 is turned on to add the agent in the agent storage tank 4 into the cleaning water tank 1 according to the set time, and the cleaning pump 3 and the second control valve 72 are turned on at the same time to mix and dilute (at this time, the third pipeline 63, the fourth pipeline 64 and the cleaning water tank 1 form a circulation loop). After mixing is completed, the cleaning pump 3 and the second control valve 72 are closed.

[0044] Step 2: Maintenance and cleaning of the ultrafiltration device 8. When the ultrafiltration reaches the cleaning cycle, the third control valve 73 and the fourth control valve 74 are opened, and then the cleaning pump 3 is turned on to perform cyclic cleaning according to the set time (at this time, the third pipeline 63, the fifth pipeline 65, the ultrafiltration device 8 and the cleaning water tank 1 form a circulation loop).

[0045] Step 3: Ultrafiltration flushing: After the cycle cleaning is completed, the third control valve, the fourth control valve 74 and the cleaning pump 3 are closed, and the ultrafiltration device 8 is flushed with clean water using the backwash pump and the raw water pump.

[0046] Step 4: Replenishing the reagent. Open the first control valve 71 to replenish water, and at the same time, open the reagent push pump 5 to add the reagent in the reagent storage tank 4 into the cleaning water tank 1 according to the set time, and at the same time, open the cleaning pump 3 and the second control valve 72 to mix and dilute (at this time, the third pipeline 63, the fourth pipeline 64 and the cleaning water tank 1 form a circulation loop).

[0047] Step 5, repeat the above steps 2 to 4 until the number of cycles is reached.

[0048] Step 6, draining the cleaning liquid. When the set number of cycles is reached, open the drain valve 79, drain the cleaning liquid once and then perform step 1 to re-dispense the medicine.

[0049] The bottom of the cleaning water tank 1 is a cone bottom, which is convenient for completely emptying the cleaning liquid at one time, and at the same time prevents pollutants from being precipitated and then sucked into the ultrafiltration device 8 again by the cleaning pump 3.

[0050] Among them, the first control valve 71, the second control valve 72, the third control valve 73, the fourth control valve 74 and the drain valve 79 are all pneumatic valves, and they can also be valves of other forms or structures.

[0051] It is worth noting that in order to ensure the accuracy of the addition of the agent, a agent weighing meter and a agent control valve can be installed on the agent delivery pipeline. When the agent reaches the agent weighing meter and the agent weighing meter reaches the preset value, the agent control valve opens and the agent enters the cleaning water tank 1.

[0052] In order to further optimize the implementation effect of the present invention, in some other implementations, the remaining characteristic technologies are the same, except that a check valve 710 is also installed on the third pipeline 63.

[0053] In order to further optimize the implementation effect of the utility model, in some other embodiments, the other characteristic technologies are the same, the difference is that a fifth control valve 75 and a sixth control valve 76 are also installed on the third pipeline 63, the fifth control valve 75 is installed at the inlet of the cleaning pump 3, and the sixth control valve 76 is installed at the outlet of the cleaning pump 3.

[0054] The conductance of the third pipeline 63 can be further controlled.

[0055] In order to further optimize the implementation effect of the utility model, in some other embodiments, the other characteristic technologies are the same, the difference is that a filter (not shown in the figure) is installed on the third pipeline 63, and the filter is installed at the outlet of the cleaning pump 3.

[0056] A Y-type filter is installed at the outlet of cleaning pump 3 to intercept larger particles and protect the ultrafiltration membrane.

[0057] In order to further optimize the implementation effect of the utility model, in some other embodiments, the other characteristic technologies are the same, the difference is that the ultrafiltration circulation cleaning device also includes: a pH meter 94, and the pH meter 94 is used to detect the pH value of the liquid in the cleaning water tank 1.

[0058] A pH meter 94 may be installed on the fourth pipeline 64 .

[0059] The utility model can be provided with multiple groups of medicine storage boxes 4 and medicine pushing pumps 5.

[0060] After the cleaning is completed, the utility model can also perform a chemical recovery cleaning operation.

[0061] The linked acid and alkali dispensing system can be configured with acid and alkali cleaning agents, and chemical recovery cleaning can be performed when the fouling is serious. The addition of chemical agents is controlled by a pH meter, which can achieve one-button automatic cleaning.

[0062] The automatic cleaning steps are as follows:

[0063] Step 1: Set the configuration of the cleaning liquid according to the set dilution ratio of the reagent. Set the liquid level meter 2 according to the set dilution ratio of the reagent, open the first control valve 71, and the liquid in the cleaning water tank 1 will gradually increase.

[0064] When the set liquid level is reached, the reagent push pump 5 (such as an acid-base pump) is turned on to add the reagents in the reagent storage tank 4 (such as acid and alkali cleaning agents) into the cleaning water tank 1 according to the set time, and the cleaning pump 3 and the second control valve 72 are turned on at the same time for mixing and dilution (at this time, the third pipeline 63, the fourth pipeline 64 and the cleaning water tank 1 form a circulation loop). When the pH meter reaches the set value, the cleaning pump 3 and the second control valve 72 are closed.

[0065] Step 2: Open the third control valve 73 and the fourth control valve 74, then turn on the cleaning pump 3, and perform cyclic cleaning according to the set time (at this time, the third pipeline 63, the fifth pipeline 65, the ultrafiltration device 8 and the cleaning water tank 1 form a circulation loop).

[0066] When cleaning, perform the steps of cyclic cleaning → soaking → cyclic cleaning to improve the cleaning effect.

[0067] Step 3: After the cleaning is completed, all valves are closed and the ultrafiltration device 8 is put back into use after performing the automatic flushing step.

[0068] Step 4: Add neutralizing agent, open the cleaning pump 3 and the second control valve 72 for circulation mixing, and stop when the pH meter detects that the water quality is qualified.

[0069] Step 5: Open the drain valve 79 to drain the cleaning fluid once and for all.

[0070] In order to further optimize the implementation effect of the utility model, in some other implementations, the remaining characteristic technologies are the same, except that, Figure 2 As shown, the ultrafiltration liquid inlet of the ultrafiltration device 8 is connected to the gas storage tank 91 through the sixth pipeline 66, and the seventh control valve 77 is installed on the sixth pipeline 66. The ultrafiltration liquid outlet of the ultrafiltration device 8 is connected to the exhaust pipe 68, and the exhaust valve 711 is installed on the exhaust pipe 68.

[0071] Before the circulation cleaning, the utility model uses the gas in the gas storage tank to purge the ultrafiltration membrane in the ultrafiltration device 8, so as to loosen the stains on the ultrafiltration membrane of the ultrafiltration device 8 and improve the subsequent cleaning efficiency.

[0072] Furthermore, an eighth control valve 78 is installed on the second pipeline 62 .

[0073] When the ultrafiltration device 8 is purged with gas, the eighth control valve 78 is closed. When the circulation cleaning is performed, the eighth control valve 78 is opened to prevent the purged dirt from entering the cleaning liquid.

[0074] Furthermore, a flow meter 92 is installed on the sixth pipeline 66 .

[0075] Perform flow statistics on the purge gas.

[0076] Furthermore, an airtightness detection device 93 is installed on the sixth pipeline 66 .

[0077] The air tightness detection device 93 is used to detect the air tightness of the sixth pipeline 66 to prevent air leakage.

[0078] It is worth noting that the above-mentioned liquid level meter 2, pH meter, flow meter 92, etc. can be electrically connected to the touch screen through a PLC control device. The touch screen is used to realize human-computer interaction.

[0079] The existing ultrafiltration device 8 has the problems of large reagent loss during maintenance cleaning, short cleaning time and poor cleaning effect; the ultrafiltration maintenance cleaning and regular chemical cleaning use two independent systems, the equipment occupies a large area and the investment cost is high.

[0080] The utility model discloses an ultrafiltration circulation cleaning device with a simple structure. Different from the existing method, the utility model eliminates the addition of medicine during regular backwashing according to the characteristics of the ultrafiltration device 8, and uses the cleaning water tank 1 and the cleaning pump 3 to perform circulation cleaning during the cleaning cycle, and the medicine after cleaning is discharged regularly, and the lost medicine is replenished by the medicine push pump 5.

[0081] The utility model improves the maintenance cleaning method in the ultrafiltration device 8. The general cycle cleaning utilization number is generally 5 times, which can save 80% of the maintenance cleaning agent dosage. At the same time, the maintenance cleaning device and the chemical recovery cleaning device are integrated, saving land and investment costs. It has good economic and environmental benefits.

[0082] The utility model can change the type and concentration of the agent according to the pollution situation, and only needs to set the corresponding parameters on the touch screen. By setting the parameters, the device can be used for chemical restorative cleaning, realizing multiple uses of one device, greatly saving equipment space and investment costs, and reducing carbon emissions.

[0083] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0084] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0085] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which shall fall within the scope of the utility model to be protected. The scope of protection of the utility model shall be defined by the attached claims and their equivalents.

[0086] The control method of the present invention is to control by manually starting and closing the switch. The wiring diagram of the power element and the provision of power supply are common knowledge in the field, and the present invention is mainly used to protect mechanical devices, so the present invention will not explain the control method and wiring arrangement in detail.

Claims

1. Ultrafiltration circulation cleaning device, characterized in that: include: Cleaning water tank, liquid level gauge, cleaning pump, agent storage tank, agent push pump and several pipelines; The medicine pushing pump is used to push the medicine in the medicine storage box into the cleaning water tank; The liquid level meter is used to measure the liquid level in the cleaning water tank; The first liquid inlet of the cleaning water tank is connected to the external liquid inlet terminal through a first pipeline, and a first control valve is installed on the first pipeline; The second liquid inlet of the cleaning water tank is connected to the ultrafiltration liquid outlet of the ultrafiltration device through a second pipeline; The water tank liquid outlet of the cleaning water tank is connected to the third liquid inlet of the cleaning water tank through the third pipeline and the fourth pipeline in sequence, and a cleaning pump is installed on the third pipeline, and a second control valve is installed on the fourth pipeline; The water tank liquid outlet of the cleaning water tank is connected to the ultrafiltration liquid inlet of the ultrafiltration device through the third pipeline and the fifth pipeline in sequence, and the third control valve and the fourth control valve are installed on the fifth pipeline.

2. The ultrafiltration circulation cleaning device according to claim 1, characterized in that: A check valve is also installed on the third pipeline.

3. The ultrafiltration circulation cleaning device according to claim 1, characterized in that: A fifth control valve and a sixth control valve are also installed on the third pipeline. The fifth control valve is installed at the inlet of the cleaning pump, and the sixth control valve is installed at the outlet of the cleaning pump.

4. The ultrafiltration circulation cleaning device according to claim 1, characterized in that: A filter is installed on the third pipeline, and the filter is installed at the outlet of the cleaning pump.

5. The ultrafiltration circulation cleaning device according to claim 1, characterized in that: The bottom of the cleaning water tank is in a conical structure, the drain outlet of the cleaning water tank is connected to a drain pipe, and a drain valve is installed on the drain pipe.

6. The ultrafiltration circulation cleaning device according to claim 1, characterized in that: The ultrafiltration circulation cleaning device also includes a pH meter, which is used to detect the pH value of the liquid in the cleaning water tank.

7. The ultrafiltration circulation cleaning device according to any one of claims 1 to 6, characterized in that: The ultrafiltration liquid inlet of the ultrafiltration device is connected to the gas storage tank through the sixth pipeline, and the seventh control valve is installed on the sixth pipeline. The ultrafiltration liquid outlet of the ultrafiltration device is connected to the exhaust pipe, and the exhaust valve is installed on the exhaust pipe.

8. The ultrafiltration circulation cleaning device according to claim 7, characterized in that: An eighth control valve is installed on the second pipeline.

9. The ultrafiltration circulation cleaning device according to claim 7, characterized in that: A flow meter is installed on the sixth pipeline.

10. The ultrafiltration circulation cleaning device according to claim 7, characterized in that: An air tightness detection device is installed on the sixth pipeline.

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