A desalination device that facilitates production operation and reduces operation cost
By introducing a high-level water tank and a level interlocking control valve into the demineralized water unit, the circulation of demineralized water is achieved, solving the problem of reverse osmosis membrane drying, extending the membrane's service life, and reducing operating costs.
Patent Information
- Application Number
- CN202520919179.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-09
- Publication Date
- 2026-08-04
- Estimated Expiration
- 2035-05-09
AI Technical Summary
When existing desalination plants are not in operation for extended periods, the reverse osmosis membrane dries out, affecting its lifespan and leading to increased replacement frequency and higher operating costs.
By introducing a high-level water tank and a level interlocking control valve into the demineralized water unit, the demineralized water is circulated within the unit, ensuring that the reverse osmosis membrane is always in a moist state. The use of treated demineralized water for circulation improves the membrane's service life.
This extends the lifespan of the reverse osmosis membrane and reduces the frequency of replacement and operating costs.
Smart Images
Figure CN224590810U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of chemical equipment technology, and relates to desalination water, specifically a desalination water device that facilitates production operation and reduces operating costs. Background Technology
[0002] In a chemical project, the desalination unit first introduces raw water, which is then filtered to remove suspended solids, odors, color, heavy metals, synthetic detergents, and chlorine. After the filter has been running for a period of time, the impurities adsorbed by the filter media need to be removed before the water passes through a reverse osmosis (RO) unit. The RO unit is the core of the entire desalination unit. Its principle is that raw water passes through a reverse osmosis membrane under high pressure, causing the solvent in the water to diffuse from a high concentration to a low concentration, thus achieving separation, purification, and concentration. The water exiting the RO unit has a lower salt content, but still contains some cations and anions. At this point, the EDI (Electrodeionization) desalination unit, under the influence of an electric field, exchanges hydrogen ions and hydroxide ions with the cations and anions in the water, causing the concentrated saline water to be discharged with the concentrate stream, ensuring the purity of the effluent.
[0003] Existing demineralization equipment does not take into account the actual operating conditions of chemical production enterprises. In actual production, because the demand for demineralized water is not continuous, demineralization equipment is often not in operation for extended periods. The reverse osmosis membranes in the reverse osmosis system experience prolonged periods without liquid flow, which affects their lifespan, increases the frequency of membrane replacement, and raises the company's operating costs. Summary of the Invention
[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a demineralized water device that is convenient for production and operation and reduces operating costs, so as to solve the technical problem that the convenience of production and operation of existing demineralized water devices needs to be further reduced.
[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:
[0006] A desalination device that facilitates production and operation includes a raw water booster pump. The outlet of the raw water booster pump is connected to the inlet of a high-level water tank via a first manual valve. The outlet of the high-level water tank is connected to the inlet of a reverse osmosis mechanism via a liquid level interlock control valve.
[0007] The outlet of the raw water booster pump is also connected to the inlet of the filter via a second hand valve.
[0008] It also includes a demineralized water tank, the outlet of which is connected to the inlet of the raw water booster pump via a return water pipe, and the outlet of the demineralized water tank is also connected to the demineralized water usage point via a third hand valve.
[0009] It also includes a raw water inlet tank, the outlet of which is connected to the inlet of the raw water booster pump via a fourth hand valve.
[0010] This utility model also has the following technical features:
[0011] Specifically, the inlet of the raw water inlet tank is connected to the outlet of the raw water supply point.
[0012] Specifically, the outlet of the filter is connected to the inlet of the reverse osmosis unit, the outlet of the reverse osmosis unit is connected to the inlet of the EDI desalination unit, and the outlet of the EDI desalination unit is connected to the inlet of the desalinated water tank.
[0013] Specifically, the elevated water tank is located vertically above the reverse osmosis unit, which is located vertically above the EDI desalination unit.
[0014] Specifically, the reverse osmosis mechanism and the filter are arranged flush.
[0015] Compared with the prior art, the present invention has the following beneficial technical effects:
[0016] (I) When the demineralized water device of this utility model is not in operation for a long time, the demineralized water in the demineralized water tank is returned to the inlet of the raw water booster pump through the return water pipe. Under the action of the raw water booster pump, the demineralized water is transported to the high-level water tank. When the liquid level in the high-level water tank reaches the set height, the liquid level interlock control valve opens. The demineralized water flows through the reverse osmosis mechanism and the EDI desalination mechanism under the action of gravity, and finally returns to the demineralized water tank. This realizes the internal circulation of demineralized water in the raw water booster pump, the high-level water tank, the reverse osmosis mechanism, the EDI desalination mechanism and the demineralized water tank, ensuring that the reverse osmosis membrane in the reverse osmosis mechanism is regularly kept moist and in working condition.
[0017] (II) In this utility model device, since the desalinated water in the desalinated water tank is treated, the quality of the desalinated water in the desalinated water tank is far superior to the quality of the raw water in the raw water inlet tank. Therefore, it can improve the service life of the reverse osmosis membrane in the reverse osmosis mechanism, avoid the problem of long-term and high-frequency replacement of the reverse osmosis membrane, and also increase the operating cost. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the device in this utility model.
[0019] The meanings of the labels in the diagram are as follows: 1-Raw water booster pump, 2-First hand valve, 3-High-level water tank, 4-Liquid level interlock control valve, 5-Reverse osmosis mechanism, 6-Second hand valve, 7-Filter, 8-Desalinated water tank, 9-Third hand valve, 10-Desalinated water usage point, 11-Raw water inlet tank, 12-Fourth hand valve, 13-EDI desalination mechanism, 14-Return water pipe, 15-Raw water supply point, 16-Pipeline.
[0020] The specific content of this utility model will be further explained in detail below with reference to the embodiments. Detailed Implementation
[0021] It should be noted that, unless otherwise specified, all mechanisms, equipment, and components in this utility model are based on mechanisms, equipment, and components known in the prior art. For example, the first hand valve 2 is a known hand valve.
[0022] In this invention, the various devices are mainly connected by pipes 16. Each pipe 16 is equipped with a valve as needed, which is opened or closed according to process requirements. All valves in this invention are commonly used valves in the prior art.
[0023] Following the above technical solution, the following are specific embodiments of this utility model. It should be noted that this utility model is not limited to the following specific embodiments, and all equivalent modifications made based on the technical solution of this application fall within the protection scope of this utility model.
[0024] Example:
[0025] This embodiment provides a demineralized water device that is easy to operate in production, such as... Figure 1 As shown, it includes a raw water booster pump 1. The outlet of the raw water booster pump 1 is connected to the inlet of the high-level water tank 3 through a first hand valve 2. The outlet of the high-level water tank 3 is connected to the inlet of the reverse osmosis mechanism 5 through a liquid level interlock control valve 4.
[0026] like Figure 1 As shown, the outlet of the raw water booster pump 1 is also connected to the inlet of the filter 7 via a second hand valve 6.
[0027] like Figure 1 As shown, it also includes a demineralized water tank 8. The outlet of the demineralized water tank 8 is connected to the inlet of the raw water booster pump 1 through a return water pipe 14. The outlet of the demineralized water tank 8 is also connected to the demineralized water point 10 through a third hand valve 9.
[0028] like Figure 1 As shown, it also includes a raw water inlet tank 11, and the outlet of the raw water inlet tank 11 is connected to the inlet of the raw water booster pump 1 through a fourth hand valve 12.
[0029] In this embodiment, the liquid level interlock control valve 4 is a liquid level interlock control valve commonly known in the art.
[0030] In this embodiment, the reverse osmosis mechanism 5 adopts a reverse osmosis mechanism commonly known in the art.
[0031] In this embodiment, filter 7 is a commonly used filter known in the art.
[0032] In this embodiment, the demineralized water point 10 adopts a commonly used demineralized water point known in the art.
[0033] As a preferred embodiment of this invention, such as Figure 1 As shown, the inlet of the raw water inlet tank 11 is connected to the outlet of the raw water supply point 15.
[0034] As a preferred embodiment of this invention, such as Figure 1 As shown, the outlet of filter 7 is connected to the inlet of reverse osmosis unit 5, the outlet of reverse osmosis unit 5 is connected to the inlet of EDI desalination unit 13, and the outlet of EDI desalination unit 13 is connected to the inlet of desalinated water tank 8.
[0035] In this embodiment, the raw water supply point 15 adopts a raw water supply point commonly known in the art.
[0036] In this embodiment, the EDI desalination mechanism 13 refers to a continuous electro-desalination mechanism, and the EDI desalination mechanism 13 adopts a commonly used EDI desalination mechanism known in the art.
[0037] As a preferred embodiment of this invention, such as Figure 1 As shown, the high-level water tank 3 is located vertically above the reverse osmosis unit 5, and the reverse osmosis unit 5 is located vertically above the EDI desalination unit 13.
[0038] As a preferred embodiment of this invention, such as Figure 1 As shown, the reverse osmosis unit 5 and the filter 7 are arranged flush.
[0039] In this embodiment, since the demineralized water in the demineralized water tank 8 is treated, the water quality of the demineralized water in the demineralized water tank 8 is far superior to the water quality of the raw water in the raw water inlet tank 11. By adding a return water pipe 14 after the demineralized water tank 8, and adding a high-level water tank 3 and a liquid level interlock control valve 4 after the raw water booster pump 1, in addition to ensuring that the reverse osmosis membrane in the reverse osmosis mechanism 5 is regularly kept moist and in working condition, the service life of the reverse osmosis membrane in the reverse osmosis mechanism 5 is also improved, avoiding the problem of increased operating costs caused by long-term, high-frequency replacement of the reverse osmosis membrane in the reverse osmosis mechanism 5.
[0040] In this embodiment, when the demineralized water device is not in operation for a long time, the demineralized water in the demineralized water tank 8 is returned to the inlet of the raw water booster pump 1 through the return water pipe 14. Under the action of the raw water booster pump 1, the demineralized water is transported to the high-level water tank 3. When the liquid level in the high-level water tank 3 reaches the set height, the liquid level interlock control valve 4 opens. The demineralized water flows through the reverse osmosis mechanism 5 and the EDI desalination mechanism 13 under the action of gravity, and finally returns to the demineralized water tank 8. This realizes the internal circulation of demineralized water in the raw water booster pump 1, the high-level water tank 3, the reverse osmosis mechanism 5, the EDI desalination mechanism 13, and the demineralized water tank 8, ensuring that the reverse osmosis membrane in the reverse osmosis mechanism 5 is regularly kept moist and in working condition. In addition, since the demineralized water in the demineralized water tank 8 is treated, the water quality of the demineralized water in the demineralized water tank 8 is much better than the water quality of the raw water in the raw water inlet tank 11, thus improving the service life of the reverse osmosis membrane in the reverse osmosis mechanism 5.
[0041] When the demineralized water unit is in operation, the second hand valve 6, the third hand valve 9, and the fourth hand valve 12 are opened, and the first hand valve 2 is closed. Raw water enters the raw water inlet tank 11 from the raw water supply point 15. Under the action of the raw water booster pump 1, it passes through the filter 7, the reverse osmosis mechanism 5, and the EDI desalination mechanism 13 in sequence to remove impurities and salts. The raw water with impurities and salts removed, i.e., the demineralized water, enters the demineralized water tank 8 and finally reaches the demineralized water use point 10.
[0042] When the demineralized water unit is not in operation for a long time, the second hand valve 6, the third hand valve 9, and the fourth hand valve 12 are closed, and the first hand valve 2 is opened. The demineralized water in the demineralized water tank 8 flows through the return water pipe 14 and the raw water booster pump 1, and is transported to the high-level water tank 3 under the action of the raw water booster pump 1. When the liquid level in the high-level water tank 3 reaches the set height, the liquid level interlock control valve 4 is opened, and the liquid flows through the reverse osmosis mechanism 5 and the EDI desalination mechanism 13 by gravity, and finally returns to the demineralized water tank 8 to realize internal circulation, ensuring that the reverse osmosis membrane in the reverse osmosis mechanism 5 is kept moist and in working condition.
Claims
1. A desalination device that facilitates production and reduces operating costs, comprising a raw water booster pump (1), characterized in that, The outlet of the raw water booster pump (1) is connected to the inlet of the high-level water tank (3) through the first hand valve (2), and the outlet of the high-level water tank (3) is connected to the inlet of the reverse osmosis mechanism (5) through the liquid level interlock control valve (4). The outlet of the raw water booster pump (1) is also connected to the inlet of the filter (7) through a second hand valve (6); It also includes a demineralized water tank (8), the outlet of which is connected to the inlet of the raw water booster pump (1) through a return water pipe (14), and the outlet of the demineralized water tank (8) is also connected to the demineralized water point (10) through a third hand valve (9). It also includes a raw water inlet tank (11), the outlet of which is connected to the inlet of the raw water booster pump (1) via a fourth hand valve (12).
2. The desalination equipment as described in claim 1, which facilitates production operation and reduces operating costs, is characterized in that... The inlet of the raw water inlet tank (11) is connected to the outlet of the raw water supply point (15).
3. The desalination equipment as described in claim 1, which facilitates production operation and reduces operating costs, is characterized in that... The outlet of the filter (7) is connected to the inlet of the reverse osmosis mechanism (5), the outlet of the reverse osmosis mechanism (5) is connected to the inlet of the EDI desalination mechanism (13), and the outlet of the EDI desalination mechanism (13) is connected to the inlet of the desalinated water tank (8).
4. The desalination equipment as described in claim 3, which facilitates production operation and reduces operating costs, is characterized in that... The high-level water tank (3) is located vertically above the reverse osmosis mechanism (5), which is located vertically above the EDI desalination mechanism (13).
5. The desalination equipment as described in claim 4, which facilitates production and reduces operating costs, is characterized in that... The reverse osmosis mechanism (5) and the filter (7) are arranged flush.