Reverse osmosis water inlet temperature automatic control device

By combining the inspection and adjustment components, intelligent control of the reverse osmosis feed water temperature throughout the entire process is achieved, solving the problems of uneven temperature distribution and insufficient adjustment accuracy in traditional control methods, improving water temperature stability and membrane element lifespan, and reducing energy consumption.

CN224388501UActive Publication Date: 2026-06-23SHANGHAI QINGYUAN ZHIHUI WATER TREATMENT EQUIPMENT CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANGHAI QINGYUAN ZHIHUI WATER TREATMENT EQUIPMENT CO LTD
Filing Date
2025-08-04
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

Traditional reverse osmosis feed water temperature control methods cannot fully reflect the water flow temperature distribution, have low adjustment accuracy, and lack a secondary optimization mechanism, resulting in poor water temperature stability, which affects membrane separation efficiency and membrane element life.

Method used

The automatic control device, which combines inspection and adjustment components, drives the water temperature sensor to slide and inspect through the meshing transmission of motor, shaft, gear and rack. Combined with the adjustment of heating plate, cooling plate and electric valve, and with the temperature sensor and controller, it realizes full-process temperature control, including preliminary and secondary adjustment.

Benefits of technology

It achieves full-range and precise control of the influent temperature, reduces the impact of temperature fluctuations on membrane elements, improves the quality of produced water and membrane lifespan, and reduces system energy consumption.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The utility model provides reverse osmosis water inlet temperature automatic control device relates to reverse osmosis technical field, including water storage jar, the top of water storage jar is equipped with the inspection component, the inspection component includes the connecting pipe, the inner wall fixed mounting of connecting pipe has electric valve, the top of electric valve is fixed mounting has heating plate and cooling plate respectively, the outer wall slidingly connected of connecting pipe has water temperature sensor. The utility model, through setting up the inspection component, drive slide shell and water temperature sensor along the connecting pipe sliding, realize the full domain temperature inspection of water inlet different position, avoid the limitation of fixed point detection, ensure that temperature data is comprehensive accurate, the heating plate and cooling plate in connecting pipe can start fast according to water temperature condition, realize heating or cooling to water flow respectively, cooperate adjustable electric valve control water flow of opening degree, form efficient preliminary temperature regulation mechanism, guarantee water temperature fast approach preset range.
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Description

Technical Field

[0001] This utility model relates to the field of reverse osmosis technology, and in particular to a reverse osmosis feed water temperature self-control device. Background Technology

[0002] Reverse osmosis technology, as a highly efficient water treatment process, is widely used in seawater desalination, pure water production, and wastewater treatment. During the operation of a reverse osmosis system, the feed water temperature is a key factor affecting membrane separation efficiency, product water quality, and membrane element lifespan. Excessively high temperatures accelerate membrane aging and degradation, reducing membrane retention performance; excessively low temperatures increase water viscosity, leading to decreased product water output and increased energy consumption.

[0003] Traditional reverse osmosis feed water temperature control methods have obvious limitations: they mostly use fixed-point temperature detection, which makes it difficult to fully reflect the water flow temperature distribution and is easily affected by local water temperature deviations, thus affecting the control accuracy; temperature regulation is mostly single-stage control, lacking a secondary optimization mechanism, resulting in poor water temperature stability. Utility Model Content

[0004] The purpose of this utility model is to solve the technical problems mentioned in the background art.

[0005] This utility model adopts the following technical solution: a reverse osmosis feed water temperature self-control device, including a water storage tank, an inspection component provided on the top of the water storage tank, the inspection component including a connecting pipe, an electric valve fixedly installed on the inner wall of the connecting pipe, a heating plate and a cooling plate fixedly installed on the top of the electric valve respectively, a water temperature sensor slidably connected to the outer wall of the connecting pipe, a rack fixedly installed on the side of the connecting pipe away from the water temperature sensor, a gear meshing on the outer wall of the rack, a rotating shaft fixedly installed on the inner wall of the gear, a motor fixedly installed on the side of the rotating shaft away from the gear, a support frame fixedly installed on the outer wall of the motor, and a sliding shell fixedly installed on the side of the water temperature sensor away from the connecting pipe.

[0006] Preferably, a water inlet pipe is fixedly installed at the bottom of the connecting pipe, an adjustment component is provided on the inner wall of the water storage tank, a temperature sensor is fixedly installed in the bottom inner cavity of the adjustment component, and a controller is fixedly installed at the top of the water storage tank. Here, the water inlet pipe provides a stable channel for water inflow, ensuring a continuous flow of water into the water storage tank; the adjustment component can perform secondary adjustment of the water temperature in the water storage tank, further optimizing the water temperature stability.

[0007] Preferably, the outer wall of the connecting pipe is fixedly installed to the inner wall of the water storage tank, the side of the rotating shaft away from the motor is rotatably connected to the inner wall of the support frame, the inner wall of the sliding shell is slidably connected to the outer wall of the connecting pipe, and the outer wall of the support frame is fixedly installed to the inner wall of the sliding shell. Here, the fixed connection between the connecting pipe and the water storage tank enhances the structural stability of the device, ensuring that the inspection component does not shake during operation; the rotatable connection between the rotating shaft and the support frame ensures smooth gear transmission and reduces mechanical wear; the sliding connection between the sliding shell and the connecting pipe makes the inspection action of the water temperature sensor smooth and without jamming, improving the reliability of temperature detection.

[0008] Preferably, the controller is electrically connected to the temperature sensor, the regulating ring, the motor, and the electric valve. Here, the electrical connection between the controller and each component enables intelligent linkage of the device: the temperature sensor transmits detection data to the controller in real time, and the controller automatically controls the operation of the motor, electric valve, and regulating ring according to preset parameters.

[0009] Preferably, the regulating component includes an regulating ring, and fins are fixedly mounted on the inner wall of the regulating ring. Here, the fins can increase the contact area with water, accelerate the heat exchange rate, and improve the water temperature regulation efficiency.

[0010] Preferably, the outer wall of the adjusting ring is adapted to the inner wall of the water storage tank. Here, the adaptation of the outer wall of the adjusting ring to the inner wall of the water storage tank ensures a tight connection between the adjusting assembly and the water storage tank, reducing energy loss of water flow at the gap.

[0011] Preferably, the fins are arranged in a ring array on the inner wall of the regulating ring, and gaps are formed between adjacent fins to allow water flow. Here, the ring array of fins and the gaps between adjacent fins ensure that water can flow smoothly through the regulating component and that the water can fully contact the fins, thereby improving heat exchange efficiency.

[0012] Preferably, the fins are made of alloy, and the length of the fins is adapted to the axial dimension of the adjusting ring. The outer wall of the adjusting ring is fixedly installed to the inner wall of the bottom of the water storage tank. Here, the alloy fins have good thermal conductivity, which can quickly transfer heat and improve the water temperature adjustment speed. In addition, the alloy material has high strength and corrosion resistance, making it suitable for long-term operation in water and extending the service life of the fins.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] 1. In this utility model, by setting up an inspection component, which drives the sliding shell and water temperature sensor to slide along the connecting pipe through the meshing transmission of a motor, rotating shaft, gear and rack, it realizes full-range temperature inspection of different positions of the inlet water, avoiding the limitations of fixed-point detection and ensuring comprehensive and accurate temperature data; the heating plate and cooling plate in the connecting pipe can be quickly activated according to the water temperature, respectively to heat or cool the water flow, and together with the adjustable electric valve to control the water flow, it forms an efficient preliminary temperature regulation mechanism to ensure that the water temperature quickly approaches the preset range; at the same time, the temperature sensor and water temperature sensor collect data in real time and transmit it to the controller to complete temperature inspection, water flow regulation, heating / cooling and secondary temperature equalization operations, without manual intervention.

[0015] 2. In this invention, a full-process water temperature control system is constructed through multiple detection and adjustment mechanisms. The heating plate and cooling plate in the connecting pipe achieve initial temperature regulation, and the adjustment components in the water storage tank are further optimized through alloy fins. The fins are arranged in a ring array to increase the contact area and create water flow disturbance, thereby improving temperature uniformity. This "full-range detection + multi-stage adjustment" mode can accurately control the inlet water temperature within a preset range, effectively avoiding the impact of temperature fluctuations on membrane elements, improving the quality of produced water and the service life of the membrane, and reducing system operating energy consumption. Attached Figure Description

[0016] Figure 1 This utility model provides a three-dimensional structural diagram of a reverse osmosis feed water temperature self-control device;

[0017] Figure 2 This invention provides an exploded structural diagram of a reverse osmosis feed water temperature self-control device;

[0018] Figure 3 This utility model provides a schematic diagram of the regulating component of a reverse osmosis feed water temperature self-control device;

[0019] Figure 4 A schematic diagram of the sliding shell structure of a reverse osmosis feed water temperature self-control device is provided for this utility model;

[0020] Figure 5 This utility model provides a schematic diagram of the inspection component of a reverse osmosis feed water temperature self-control device;

[0021] Figure 6 This invention proposes a reverse osmosis feed water temperature self-control device. Figure 5 Enlarged view of point A in the middle.

[0022] Legend:

[0023] 1. Water storage tank; 2. Inspection component; 3. Water inlet pipe; 4. Regulating component; 5. Temperature sensor; 6. Controller;

[0024] 201. Connecting pipe; 202. Electric valve; 203. Heating plate; 204. Cooling plate; 205. Water temperature sensor; 206. Rack; 207. Gear; 208. Shaft; 209. Motor; 210. Support frame; 211. Sliding housing;

[0025] 401. Adjusting ring; 402. Fin. Detailed Implementation

[0026] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0027] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0028] Example 1

[0029] Please see Figures 1-6 This utility model provides a technical solution: a reverse osmosis feed water temperature self-control device, including a water storage tank 1, an inspection component 2 on the top of the water storage tank 1, the inspection component 2 including a connecting pipe 201, an electric valve 202 fixedly installed on the inner wall of the connecting pipe 201, a heating plate 203 and a cooling plate 204 fixedly installed on the top of the electric valve 202 respectively, a water temperature sensor 205 slidably connected to the outer wall of the connecting pipe 201, a rack 206 fixedly installed on the side of the connecting pipe 201 away from the water temperature sensor 205, a gear 207 meshing on the outer wall of the rack 206, a rotating shaft 208 fixedly installed on the inner wall of the gear 207, a motor 209 fixedly installed on the side of the rotating shaft 208 away from the gear 207, a support frame 210 fixedly installed on the outer wall of the motor 209, and a sliding shell 211 fixedly installed on the side of the water temperature sensor 205 away from the connecting pipe 201.

[0030] A water inlet pipe 3 is fixedly installed at the bottom of the connecting pipe 201. An adjusting component 4 is provided on the inner wall of the water storage tank 1. A temperature sensor 5 is fixedly installed in the bottom cavity of the adjusting component 4. A controller 6 is fixedly installed at the top of the water storage tank 1. Here, the water inlet pipe 3 provides a stable channel for water intake, ensuring a continuous flow of water into the water storage tank 1; the adjusting component 4 can perform secondary adjustment of the water temperature in the water storage tank 1, further optimizing water temperature stability; the temperature sensor 5 can monitor the water temperature in the water storage tank 1 in real time, providing accurate data support for the controller 6; the controller 6, as the core control unit, coordinates the collaborative work of all components to achieve fully automatic water temperature control, reducing manual intervention and improving the operating efficiency of the device.

[0031] The outer wall of the connecting pipe 201 is fixedly installed to the inner wall of the water storage tank 1. The side of the rotating shaft 208 away from the motor 209 is rotatably connected to the inner wall of the support frame 210. The inner wall of the sliding shell 211 is slidably connected to the outer wall of the connecting pipe 201, and the outer wall of the support frame 210 is fixedly installed to the inner wall of the sliding shell 211. Here, the fixed connection between the connecting pipe 201 and the water storage tank 1 enhances the structural stability of the device, ensuring that the inspection component 2 does not shake during operation; the rotatable connection between the rotating shaft 208 and the support frame 210 ensures the smooth transmission of the gear 207 and reduces mechanical wear; the sliding connection between the sliding shell 211 and the connecting pipe 201 makes the inspection action of the water temperature sensor 205 smooth and without jamming, improving the reliability of temperature detection; the fixed connection between the support frame 210 and the sliding shell 211 strengthens the overall structural strength of the inspection component 2 and extends the service life of the device.

[0032] The controller 6 is electrically connected to the temperature sensor 5, the regulating ring 401, the motor 209, and the electric valve 202. This electrical connection between the controller 6 and the various components enables intelligent linkage of the device: the temperature sensor 5 transmits its detection data to the controller 6 in real time, and the controller 6 automatically controls the motor 209, the electric valve 202, and the regulating ring 401 according to preset parameters, completing a series of operations such as temperature monitoring, water flow regulation, and temperature control. This achieves precise automatic control of the water temperature, reduces human error, and improves the operational stability of the reverse osmosis system.

[0033] The regulating component 4 includes an regulating ring 401, on the inner wall of which fins 402 are fixedly installed. Here, the fins 402 can increase the contact area with water, accelerate the heat exchange rate, and improve the water temperature regulation efficiency; the regulating ring 401 can fix the position of the fins 402, ensuring that the fins 402 are evenly distributed, so that the water flow can fully contact the fins 402, ensuring uniform water temperature regulation and avoiding local water temperature deviations from affecting the reverse osmosis effect.

[0034] The outer wall of the regulating ring 401 is adapted to the inner wall of the water storage tank 1. Here, the outer wall of the regulating ring 401 is adapted to the inner wall of the water storage tank 1, so that the regulating component 4 and the water storage tank 1 are tightly connected, reducing the energy loss of water flow at the gap, while ensuring that the fins 402 can fully act on the water in the water storage tank 1, improving the overall effect of water temperature regulation, and ensuring that the water temperature in the water storage tank 1 is uniform and stable.

[0035] Fins 402 are arranged in a ring array on the inner wall of the regulating ring 401, and gaps are formed between adjacent fins 402 to allow water flow. Here, the ring array of fins 402 and the gaps between adjacent fins 402 ensure that the water flow can pass smoothly through the regulating component 4 and that the water flow can fully contact the fins 402, thereby improving heat exchange efficiency. This distribution method can also create disturbance in the water during the flow process, promote uniform water temperature mixing, avoid local water temperature being too high or too low, and further improve the uniformity of water temperature regulation.

[0036] The fins 402 are made of alloy, and their length is matched with the axial dimension of the regulating ring 401. The outer wall of the regulating ring 401 is fixedly installed on the inner wall of the bottom of the water storage tank 1. Here, the alloy fins 402 have good thermal conductivity, which can quickly transfer heat and improve the water temperature regulation speed. Moreover, the alloy material has high strength and corrosion resistance, making it suitable for long-term operation in water and extending the service life of the fins 402. The matching of the length of the fins 402 with the axial dimension of the regulating ring 401 can maximize the use of the space inside the water storage tank 1, ensure comprehensive regulation of the water, and ensure that the reverse osmosis feed water temperature is stable within the optimal range.

[0037] Working principle: The controller 6 issues a command, the electric valve 202 opens, and external water enters the inlet pipe 3 through the connecting pipe 201. At this time, the water temperature sensor 205 performs an initial temperature detection on the water flowing into the connecting pipe 201 and transmits the data to the controller 6 in real time. The controller 6 receives the detection data from the water temperature sensor 205, compares it with the preset temperature range, and makes a preliminary judgment on whether the inlet water temperature needs to be adjusted. If the water temperature is within the preset range, the water flows directly into the storage tank 1 through the inlet pipe 3. If the water temperature deviates from the preset range, the controller 6 starts the temperature regulation program. When the water temperature is lower than the preset lower limit (e.g., below 25℃), the controller 6 controls the heating plate 203 to start, heating the water in the connecting pipe 201. At the same time, the electric valve 202 adjusts the opening according to the water flow speed to ensure sufficient heating. When the water temperature is higher than the preset upper limit (e.g., above 30℃), the controller 6 starts the cooling plate 204 to cool the water. The electric valve 202 adjusts the flow rate to ensure the cooling effect. During the heating or cooling process, the water temperature sensor 205 continuously detects the water temperature change and feeds the data back to the controller 6. The controller 6 adjusts the power of the heating plate 203 or the cooling plate 204 according to the real-time data to achieve precise initial regulation of the water temperature. Controller 6 starts motor 209, which drives gear 207 to rotate via shaft 208. Gear 207 meshes with rack 206, causing sliding housing 211 to slide along the outer wall of connecting pipe 201. This, in turn, drives water temperature sensor 205 to reciprocate on connecting pipe 201, performing a comprehensive inspection of water temperature at different locations. During the inspection, water temperature sensor 205 transmits water temperature data from each point to controller 6. Controller 6 analyzes the data to confirm whether the initially adjusted water temperature is uniform and stable. If there is a local water temperature deviation, controller 6 further fine-tunes the working state of heating plate 203 or cooling plate 204 to ensure that the overall water temperature in connecting pipe 201 meets the preset range. After the initially adjusted water flows into water storage tank 1, temperature sensor 5 monitors the water temperature in water storage tank 1 in real time and transmits the data to controller 6. The controller 6 compares the data with the preset range again to determine if secondary adjustment is needed. If there is a deviation in the water temperature in the storage tank 1, the controller 6 controls the adjustment component 4 to work: the adjustment ring 401 drives the fins 402 to perform heat exchange. The alloy fins 402 absorb or release heat quickly by increasing the contact area. When the water temperature is too low, the fins 402 can assist in heating (through the built-in heating element); when the water temperature is too high, the fins 402 accelerate heat dissipation. At the same time, the fins 402 distributed in a ring array cause the water flow to form a disturbance in the gaps, promoting uniform mixing of water temperature.

[0038] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A reverse osmosis feed water temperature control device, comprising a water storage tank (1), characterized in that: The top of the water storage tank (1) is provided with an inspection component (2). The inspection component (2) includes a connecting pipe (201). An electric valve (202) is fixedly installed on the inner wall of the connecting pipe (201). A heating plate (203) and a cooling plate (204) are fixedly installed on the top of the electric valve (202). A water temperature sensor (205) is slidably connected to the outer wall of the connecting pipe (201). A rack (206) is fixedly installed on the side of the connecting pipe (201) away from the water temperature sensor (205). A gear (207) meshes on the outer wall of the rack (206). A rotating shaft (208) is fixedly installed on the inner wall of the gear (207). A motor (209) is fixedly installed on the side of the rotating shaft (208) away from the gear (207). A support frame (210) is fixedly installed on the outer wall of the motor (209). A sliding shell (211) is fixedly installed on the side of the water temperature sensor (205) away from the connecting pipe (201).

2. The reverse osmosis feed water temperature control device according to claim 1, characterized in that: A water inlet pipe (3) is fixedly installed at the bottom of the connecting pipe (201), an adjustment component (4) is provided on the inner wall of the water storage tank (1), a temperature sensor (5) is fixedly installed in the bottom cavity of the adjustment component (4), and a controller (6) is fixedly installed on the top of the water storage tank (1).

3. The reverse osmosis feed water temperature control device according to claim 1, characterized in that: The outer wall of the connecting pipe (201) is fixedly installed with the inner wall of the water storage tank (1), the side of the rotating shaft (208) away from the motor (209) is rotatably connected with the inner wall of the support frame (210), the inner wall of the sliding shell (211) is slidably connected with the outer wall of the connecting pipe (201), and the outer wall of the support frame (210) is fixedly installed with the inner wall of the sliding shell (211).

4. The reverse osmosis feed water temperature automatic control device according to claim 2, characterized in that: The controller (6) is electrically connected to the temperature sensor (5), the regulating ring (401), the motor (209), and the electric valve (202).

5. The reverse osmosis feed water temperature control device according to claim 2, characterized in that: The adjustment assembly (4) includes an adjustment ring (401), and a fin (402) is fixedly installed on the inner wall of the adjustment ring (401).

6. The reverse osmosis feed water temperature control device according to claim 5, characterized in that: The outer wall of the regulating ring (401) is adapted to the inner wall of the water storage tank (1).

7. The reverse osmosis feed water temperature automatic control device according to claim 6, characterized in that: The fins (402) are arranged in a ring array on the inner wall of the regulating ring (401), and gaps are formed between adjacent fins (402) for water to flow through.

8. The reverse osmosis feed water temperature control device according to claim 6, characterized in that: The fin (402) is made of alloy, and the length of the fin (402) is adapted to the axial dimension of the adjusting ring (401). The outer wall of the adjusting ring (401) is fixedly installed on the bottom inner wall of the water storage tank (1).