Intelligent water replenishing system for secondary water supply tank

The design of the intelligent water replenishment system solves the problems of large secondary water supply tank capacity and water quality decline, realizes rapid automatic water replenishment and water quality monitoring, ensures water safety, and improves water supply efficiency and water quality.

CN115559390BActive Publication Date: 2025-11-18JIANGXI HUKOU RUNQUAN WATER SUPPLY CO LTD
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Patent Information

Application Number
CN202211065972.X
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-09-01
Publication Date
2025-11-18
Estimated Expiration
2042-09-01

AI Technical Summary

Technical Problem

Existing secondary water supply tanks have large capacities and long water retention times, leading to increased bacteria, inability to quickly replenish water automatically, and a decline in water quality.

Method used

An intelligent water replenishment system was designed, which includes a water storage tank, a water storage tank, a limiting mechanism, a water replenishment mechanism, a liquid level detector, and an electric slide rail. The system automatically controls water replenishment through liquid level detection to prevent water stagnation and ensure water quality.

Benefits of technology

It achieves rapid and automatic water replenishment without the need for a large-capacity water tank, preventing water quality degradation, ensuring water safety, reducing bacterial growth, providing timely warnings and disinfection, and improving water supply efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present application relates to a kind of water replenishing system, more particularly to a kind of secondary water supply tank intelligent water replenishing system.The present application provides a kind of secondary water supply tank intelligent water replenishing system without excessive capacity, prevent the phenomenon of long water retention time occurs, can be according to the reduction of internal water level quickly and automatically water replenishing.The present application provides a kind of secondary water supply tank intelligent water replenishing system, including: water valve, the front middle part of water storage tank is equipped with water valve;Water storage tank, the upper side of water storage tank is connected with water storage tank;Rubber block, water storage tank is connected with rubber block.Supply water through water storage tank, water storage tank when needed water storage, so without excessive capacity, to prevent the phenomenon of long water retention time occurs in water tank, through the cooperation of limiting mechanism and water replenishing mechanism can be according to the reduction of internal water level quickly and automatically water replenishing.
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Description

TECHNICAL FIELD

[0001] The present application relates to a water replenishing system, in particular to a secondary water supply tank intelligent water replenishing system. BACKGROUND

[0002] The secondary water supply facility is an important link of urban water supply, and is crucial to the safety of water supply, and the water tank is the most problematic link in the secondary water supply facility. At present, most of the secondary water supply tanks used in high-rise residential areas are full-tank operation, but the water tank capacity of many new residential areas is large, the actual water consumption is small, the water retention time in the water tank is too long, the residual chlorine concentration of the water in the water tank decreases, the residual chlorine of the water in the water tank will be zero, which will cause the bacteria and total coliform bacteria indexes in the water to increase significantly, thereby causing water quality problems, and the water tank cannot quickly and automatically replenish water according to the decrease of the internal water level.

[0003] For example, the secondary water supply tank disclosed in the patent authorization publication No. CN205475459U and the announcement date of 20160817, which comprises a tank for storing water, the secondary water supply tank further comprises a float ball tank connected with the tank and arranged outside the tank, a float ball arranged in the float ball tank, a float ball rod connected with the float ball, and a float ball valve connected with the float ball rod. Although the secondary water supply tank can perform secondary water supply operation, the capacity required by a single water tank is large, the water retention time in the water tank is too long, which can easily cause various problems such as increase of bacteria, and the water tank cannot quickly and automatically replenish water according to the decrease of the internal water level.

[0004] According to the above-mentioned shortcomings in the prior art, a secondary water supply tank intelligent water replenishing system which can overcome the shortcomings of the prior art, without the need for a large capacity, prevent the phenomenon of too long water retention time, and can quickly and automatically replenish water according to the decrease of the internal water level is designed. SUMMARY

[0005] In order to overcome the above-mentioned shortcomings of the prior art that a single water tank requires a large capacity, the water retention time in the water tank is too long, which can easily cause various problems such as increase of bacteria, and the water tank cannot quickly and automatically replenish water according to the decrease of the internal water level, the technical problem to be solved by the present application is to provide a secondary water supply tank intelligent water replenishing system which can overcome the shortcomings of the prior art, without the need for a large capacity, prevent the phenomenon of too long water retention time, and can quickly and automatically replenish water according to the decrease of the internal water level.

[0006] In order to solve the above-mentioned technical problems, the present application provides a secondary water supply tank intelligent water replenishing system, which comprises:

[0007] A water storage tank and a water valve, the front middle part of the water storage tank is provided with a water valve;

[0008] The water storage tank is connected with a water storage tank on the upper side of the water storage tank;

[0009] The rubber block is connected with the water storage tank on the upper side of the water storage tank;

[0010] The sliding frame is slidably penetrated between the two rubber blocks and the water storage tank.

[0011] The baffle is connected between the lower sides of the middle portions of the two sliding frames for blocking between the water storage tank and the water storage tank.

[0012] The limiting mechanism is provided on the water storage tank for pressing water to the water valve.

[0013] The water replenishing mechanism is provided on the baffle for opening the baffle to replenish water, and the water replenishing mechanism is used when the limiting mechanism is used.

[0014] Preferably, the limiting mechanism comprises:

[0015] The electric sliding rail is installed on the inner top of the water storage tank, and each electric sliding rail comprises two electric sliding rails arranged in front and back symmetry.

[0016] The pressing plate is connected between the sliding members of the two symmetrical electric sliding rails.

[0017] The liquid level detector is installed on the rear inner side of the water storage tank for detecting the water level and electrically connected with the electric sliding rail, and the two pressing plates are relatively moved by the driving of the electric sliding rail to press the water.

[0018] Preferably, the water replenishing mechanism comprises:

[0019] The wedge-shaped frame is connected to the lower side of the baffle.

[0020] The extrusion rod is connected to the side of the upper portion of the two pressing plates, and the two extrusion rods are relatively moved to extrude the wedge-shaped frame.

[0021] Preferably, it further comprises a pushing mechanism for moving the baffle downward, and the pushing mechanism comprises:

[0022] The wedge-shaped rod is connected to the lower portion of the sliding frame.

[0023] The tooth-shaped guide rail is connected to the side of the middle portion of the two pressing plates.

[0024] The sliding sleeve is slidably provided on the tooth-shaped guide rail for extruding the wedge-shaped rod.

[0025] The wedge-shaped plate is slidably penetrated on the sliding sleeve for clamping on the tooth-shaped guide rail.

[0026] Preferably, the alarm mechanism for alarming when the water storage tank is empty is further included, and the alarm mechanism comprises:

[0027] The alarm is installed on the front side of the upper middle part of the water storage tank.

[0028] The two switches are installed on the upper side of the front part of the water storage tank and are electrically connected with the alarm.

[0029] The contact frame is slidably penetrated through the top of the water storage tank and is used for pressing the switch.

[0030] The two floating balls are connected to the lower side of the contact frame and are symmetrically arranged on the left and right sides.

[0031] Preferably, the disinfection mechanism for disinfecting the inside of the water storage tank is further included, and the disinfection mechanism comprises:

[0032] The mounting seat is connected to the lower front inner side of the water storage tank.

[0033] The two electric nozzles are installed on the mounting seat and are penetrated through the water storage tank.

[0034] Preferably, the detection mechanism for detecting the water quality of the water in the water storage tank is further included, and the detection mechanism comprises:

[0035] The water frame is communicated with the left and right sides of the water storage tank.

[0036] The cover plate is slidably arranged in the middle part of the water frame.

[0037] The TDS water quality detection pen is slidably arranged on the upper part of the water frame, and the TDS water quality detection pen is perpendicular to the water frame. When the TDS water quality detection pen moves downward, the cover plate is pressed.

[0038] Preferably, the disinfection mechanism for disinfecting the inside of the water storage tank is further included, and the disinfection mechanism comprises:

[0039] The four elastic members are connected between the cover plate and the water frame.

[0040] On the basis of overcoming the defects of the prior art, the present application can achieve the following beneficial effects:

[0041] 1. The water is supplied through the water storage tank, and the water storage tank is filled with water when needed, so that a large capacity is not needed, thereby preventing the phenomenon that the water in the water tank stays for too long. The water can be quickly and automatically supplemented according to the decrease of the internal water level through the cooperation of the limiting mechanism and the water supplementing mechanism.

[0042] 2. The push mechanism automatically and synchronously moves the baffle downward to block between the water storage tank and the water storage tank according to the needs of the operator after the secondary water supply is completed, so that the operator does not need to manually move the sliding frame downward, thereby facilitating the operation of the operator.

[0043] 3, the water storage tank is filled with water in time through the alarm to prevent the shortage of municipal water supply.

[0044] 4, the inside of the water storage tank is sterilized by the electric spray head, so that the water storage tank is kept clean.

[0045] 5, the water in the water storage tank is detected by the TDS water quality detection pen, so that the deteriorated water is prevented from circulating in the municipal water supply. BRIEF DESCRIPTION OF DRAWINGS

[0046] Figure 1 It is a schematic diagram of the three-dimensional structure of the present application.

[0047] Figure 2 It is a sectional view of the present application.

[0048] Figure 3 It is a schematic diagram of the three-dimensional structure of the limiting mechanism and the water replenishing mechanism of the present application.

[0049] Figure 4 It is a schematic diagram of the three-dimensional structure of the pushing mechanism of the present application.

[0050] Figure 5 It is a schematic diagram of the three-dimensional structure of the alarm mechanism and the sterilization mechanism of the present application.

[0051] Figure 6 It is a schematic diagram of the three-dimensional structure of the detection mechanism of the present application.

[0052] Figure 7 It is a schematic diagram of the three-dimensional structure of the detection mechanism of the present application.

[0053] The marks in the drawings are: 1- water storage tank, 2- water valve, 3- water storage tank, 4- rubber block, 5- sliding frame, 6- baffle, 7- limiting mechanism, 71- electric sliding rail, 72- extrusion plate, 73- liquid level detector, 8- water replenishing mechanism, 81- wedge-shaped frame, 82- extrusion rod, 9- pushing mechanism, 91- wedge-shaped rod, 92- tooth-shaped guide rail, 93- sliding sleeve, 94- wedge-shaped plate, 10- alarm mechanism, 101- alarm, 102- switch, 103- contact frame, 104- floating ball, 11- sterilization mechanism, 111- mounting seat, 112- electric spray head, 12- detection mechanism, 121- water frame, 122- cover plate, 124- TDS water quality detection pen, 123- elastic member. DETAILED DESCRIPTION

[0054] The present application will be further described below in conjunction with the drawings and examples.

[0055] Example 1

[0056] The utility model provides a secondary water supply water tank intelligent water supplement system, which comprises a water storage tank 1, a water valve 2, a water storage tank 3, rubber blocks 4, sliding frames 5, a baffle 6, a limiting mechanism 7 and a water supplement mechanism 8. Figure 1 Figure 2 As shown in the figure, the utility model discloses a secondary water supply water tank intelligent water supplement system, which comprises a water storage tank 1, a water valve 2, a water storage tank 3, rubber blocks 4, sliding frames 5, a baffle 6, a limiting mechanism 7 and a water supplement mechanism 8.

[0057] As shown in the figure, the utility model discloses a secondary water supply water tank intelligent water supplement system, which comprises a water storage tank 1, a water valve 2, a water storage tank 3, rubber blocks 4, sliding frames 5, a baffle 6, a limiting mechanism 7 and a water supplement mechanism 8. Figure 3

[0058] As shown in the figure, the utility model discloses a secondary water supply water tank intelligent water supplement system, which comprises a water storage tank 1, a water valve 2, a water storage tank 3, rubber blocks 4, sliding frames 5, a baffle 6, a limiting mechanism 7 and a water supplement mechanism 8. Figure 3

[0059] ​​​The operator can apply the corresponding technical solutions in the device to the technology of the secondary water supply tank intelligent water replenishing system according to specific circumstances. Initially, the baffle 6 is blocked between the water storage tank 1 and the water storage tank 3. When the operator needs to use the device to assist in the operation of secondary water supply, first, the operator connects the water valve 2 to the municipal water pipe, and then injects water into the inside of the water storage tank 3. After the inside of the water storage tank 3 is filled with water, the operator stops injecting water into the inside of the water storage tank 3, and then drives the baffle 6 upward by the sliding frame 5 to move away from between the water storage tank 1 and the water storage tank 3. The water in the inside of the water storage tank 3 will flow into the inside of the water storage tank 1. After the water in the inside of the water storage tank 3 completely flows into the inside of the water storage tank 1, the operator drives the baffle 6 downward again by the sliding frame 5 to block again between the water storage tank 1 and the water storage tank 3, and then injects water into the inside of the water storage tank 3 again. In this way, the two water liquids are separated to prevent the water liquids from deteriorating and being infected. Then, when the water valve 2 discharges the water liquid in the inside of the water storage tank 1, the liquid level detector 73 will detect the decrease of the water liquid in the inside of the water storage tank 1. The electric sliding rail 71 is started. The sliding part of the electric sliding rail 71 will drive the extrusion plate 72 to move inward to extrude the water liquid to the water valve 2, so as to ensure that the water valve 2 smoothly discharges the water liquid. The inward movement of the extrusion plate 72 will also drive the extrusion rod 82 to move inward. When the water liquid in the inside of the water storage tank 1 is about to be used up, the extrusion rod 82 will extrude the wedge-shaped frame 81 to move upward in the process of moving inward. The wedge-shaped frame 81 will drive the baffle 6 to move upward, so as to automatically open the baffle 6. Thus, the inside of the water storage tank 1 is automatically supplied with water when the water liquid in the inside of the water storage tank 1 is about to be used up, which ensures the municipal water source and also does not need the operator to manually supply water, which facilitates the operation of the operator. At this time, the electric sliding rail 71 is automatically closed. Then, when the liquid level detector 73 detects that the water liquid in the inside of the water storage tank 1 is gradually increasing, the electric sliding rail 71 is started again. The sliding part of the electric sliding rail 71 will drive the extrusion plate 72 to move outward. The extrusion plate 72 will drive the extrusion rod 82 to move outward to release the wedge-shaped frame 81. When the extrusion plate 72 moves outward to reset, the electric sliding rail 71 is automatically closed. At this time, the operator can drive the baffle 6 to move downward again by the sliding frame 5 to block again between the water storage tank 1 and the water storage tank 3, so as to complete the operation of secondary water supply.

[0060] Example 2

[0061] On the basis of example 1, as Figure 1 and Figure 4As shown, the push mechanism 9 for moving the baffle 6 downward includes a wedge-shaped rod 91, a tooth-shaped guide rail 92, a sliding sleeve 93, and wedge-shaped plates 94. The wedge-shaped rod 91 is bolted to the lower part of the sliding frame 5. The tooth-shaped guide rail 92 is bolted to the mutually far apart sides of the middle parts of the two pressing plates 72. The sliding sleeve 93 is slidably arranged on the tooth-shaped guide rail 92 and is used to press the wedge-shaped rod 91. The wedge-shaped plates 94 are slidably arranged on the sliding sleeve 93 and are symmetrically arranged above and below the tooth-shaped guide rail 92.

[0062] Initially, the wedge-shaped plates 94 are clamped on the tooth-shaped guide rail 92. The operator moves the sliding sleeve 93 outward, which in turn moves the wedge-shaped plates 94 outward. The wedge-shaped plates 94 are pressed by the tooth-shaped guide rail 92 during the outward movement, and the two symmetric wedge-shaped plates 94 are moved away from each other. The wedge-shaped plates 94 continue to move outward and are disengaged from the tooth-shaped guide rail 92. The operator then moves the two symmetric wedge-shaped plates 94 towards each other, so that the wedge-shaped plates 94 are clamped on the tooth-shaped guide rail 92 again, and the sliding sleeve 93 is extended from the tooth-shaped guide rail 92. When the pressing plates 72 move outward, the tooth-shaped guide rail 92 moves outward, which in turn moves the sliding sleeve 93 outward through the wedge-shaped plates 94. The sliding sleeve 93 presses the wedge-shaped rod 91 downward during the outward movement, and the wedge-shaped rod 91 moves the sliding frame 5 downward. Thus, after the secondary water supply is completed, the baffle 6 is automatically and synchronously moved downward to block between the water storage tank 1 and the water storage tank 3, without the need for the operator to manually move the sliding frame 5 downward, which facilitates the operation of the operator. The operator then moves the wedge-shaped plates 94 outward to disengage from the tooth-shaped guide rail 92, and moves the sliding sleeve 93 inward, so as to retract the sliding sleeve 93. Thus, the operator can decide whether to automatically and synchronously move the baffle 6 downward to block between the water storage tank 1 and the water storage tank 3 after the secondary water supply is completed.

[0063] Embodiment 3

[0064] Based on embodiment 2, as shown in Figure 1 and Figure 5 the alarm mechanism 10 for issuing an alarm when the water storage tank 3 is empty is further included. The alarm mechanism 10 includes an alarm 101, switches 102, a contact frame 103, and floating balls 104. The alarm 101 is installed on the upper middle front side of the water storage tank 3 by bolt connection. The two switches 102 are symmetrically arranged on the upper front side of the water storage tank 3 and are electrically connected to the alarm 101 by bolt connection. The contact frame 103 is slidably arranged on the top of the water storage tank 3 and is used to press the switches 102. The two floating balls 104 are symmetrically arranged on the lower side of the contact frame 103.

[0065] When the water in the water storage tank 3 is full, the float ball 104 will float on the top of the water storage tank 3, and when the water in the water storage tank 3 is reduced, the float ball 104 will move down with the water, and the contact frame 103 will move down accordingly. When the water in the water storage tank 3 is used up, the contact frame 103 will press the switch 102 during the process of continuing to move down, and the alarm 101 will be turned on to alert the operator to fill the water in the water storage tank 3 in time to prevent the phenomenon of insufficient municipal water supply. Then, when the water in the water storage tank 3 is gradually filled, the float ball 104 will move up with the water, and the contact frame 103 will move up accordingly to release the switch 102, and the alarm 101 will be turned off automatically.

[0066] Embodiment 4

[0067] Based on the embodiment 3, as shown in Figure 1 , Figure 5 , the disinfection mechanism 11 for disinfecting the inside of the water storage tank 3 is further included. The disinfection mechanism 11 includes the mounting seat 111 and the electric spray head 112. The mounting seat 111 is bolted to the front inner side of the lower part of the water storage tank 3. Two electric spray heads 112 are symmetrically arranged on the mounting seat 111 and penetrate the water storage tank 3.

[0068] When the water storage tank 3 stops storing water, the operator connects the pipeline of the disinfectant water to the electric spray head 112, and then starts the electric spray head 112. The electric spray head 112 sprays the disinfectant water into the inside of the water storage tank 3, thereby conveniently disinfecting the inside of the water storage tank 3, ensuring the cleanliness of the water storage tank 3. Finally, the operator can complete the disinfection operation of the water storage tank 3 by turning off the electric spray head 112.

[0069] Embodiment 5

[0070] Based on the embodiment 4, as shown in Figure 1 , Figure 6 , Figure 7 , the detection mechanism 12 for detecting the water quality of the water in the water storage tank 3 is further included. The detection mechanism 12 includes the water frame 121, the cover plate 122, and the TDS water quality detection pen 124. The water frame 121 is communicated to the left and right sides of the water storage tank 3. The cover plate 122 is slidably arranged at the middle part of the water frame 121. The TDS water quality detection pen 124 is slidably arranged at the upper part of the water frame 121 and is perpendicular to the water frame 121. The TDS water quality detection pen 124 moves down to press the cover plate 122.

[0071] As shown in Figure 7 , the elastic member 123 is further included. Four elastic members 123 are connected between the cover plate 122 and the water frame 121. The elastic member 123 is an iron spring.

[0072] At the beginning, the cover plate 122 blocks the water frame 121, part of the water in the water storage tank 3 flows into the inside of the water frame 121, the operator drives the TDS water quality detection pen 124 to move downwards, the TDS water quality detection pen 124 is pressed to move the cover plate 122 backwards in the process of moving downwards, the elastic member 123 deforms adaptively, the TDS water quality detection pen 124 continues to move downwards and moves into the inside of the water frame 121, so that the water in the water storage tank 3 is conveniently detected by the TDS water quality detection pen 124, thereby preventing the deteriorated water from circulating in the municipal water source, then the operator drives the TDS water quality detection pen 124 to move upwards and releases the cover plate 122, the elastic member 123 resets, and the cover plate 122 moves forwards and resets under the action of the reset of the elastic member 123, so that the water quality detection operation is completed.

[0073] The above-described embodiments only express the preferred embodiments of the present application, which are described in detail, but should not be understood as the limitation of the patent scope of the present application. It should be pointed out that, for those skilled in the art, several modifications, improvements and substitutions can be made without departing from the concept of the present application, which all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. An intelligent water replenishment system for a secondary water supply tank, comprising: Water storage tank (1) and water valve (2), with water valve (2) installed in the front middle part of water storage tank (1); Water storage tank (3), the upper side of water storage tank (1) is connected to water storage tank (3); Its features are, It also includes: Rubber block (4), the water storage tank (3) is connected to the rubber block (4); The sliding frame (5) has two sliding frames (5) that slide through the water tank (3) between the two rubber blocks (4). A baffle (6) is connected between the lower middle part of the two sliding frames (5) to block the water storage tank (1) and the water storage tank (3). Limiting mechanism (7): The water storage tank (1) is provided with a limiting mechanism (7) for squeezing water liquid to the water valve (2). The water replenishment mechanism (8) is provided on the baffle (6) for opening the baffle (6) to replenish water. When the limiting mechanism (7) is used, the water replenishment mechanism (8) will replenish water. The limiting mechanism (7) includes: Electric slide rail (71): Two sets of electric slide rails (71) are installed on the inner top of the water tank (1). Each set of electric slide rails (71) contains two electric slide rails (71) arranged symmetrically in front and behind. The extrusion plate (72) is connected between the sliding parts of the two symmetrical electric slide rails (71). A liquid level detector (73) is installed on the rear inner side of the water tank (1) to detect the water level and is electrically connected to the electric slide rail (71). The electric slide rail (71) drives the two squeezing plates (72) to move relative to each other to squeeze the water. The water replenishment mechanism (8) includes: The wedge-shaped frame (81) is connected to the lower side of the baffle (6). The extrusion rod (82) is connected to the upper part of the two extrusion plates (72) on the side that is close to each other. The relative movement of the two extrusion rods (82) will extrude the wedge frame (81). It also includes a pushing mechanism (9) for moving the baffle (6) downward, the pushing mechanism (9) including: A wedge rod (91) is connected to the lower part of the sliding frame (5). Toothed guide rail (92), toothed guide rail (92) is connected to the middle of the two extrusion plates (72) on the side that is far apart from each other. The slide sleeve (93) is slidably provided on the toothed guide rail (92) for pressing the wedge rod (91). Two wedge plates (94) slide through the sleeve (93) to hold the toothed guide rail (92).

2. The intelligent water replenishment system for a secondary water supply tank according to claim 1, characterized in that, It also includes an alarm mechanism (10) for sounding an alarm when the water tank (3) is empty, the alarm mechanism (10) including: An alarm (101) is installed on the front side of the upper middle part of the water tank (3). Switches (102): Two switches (102) are installed on the upper front side of the water tank (3) in a symmetrical arrangement and electrically connected to the alarm (101). The top of the water tank (3) has a sliding contact frame (103) for pressing the switch (102). The lower side of the contact frame (103) is connected to two floats (104) arranged symmetrically on the left and right.

3. The intelligent water replenishment system for a secondary water supply tank according to claim 2, characterized in that, It also includes a disinfection mechanism (11) for disinfecting the interior of the water storage tank (3), the disinfection mechanism (11) including: Mounting base (111) is connected to the lower front inner side of the water tank (3). Two electric nozzles (112) are installed on the mounting base (111) and pass through the water storage tank (3).

4. The intelligent water replenishment system for a secondary water supply tank according to claim 3, characterized in that, It also includes a testing mechanism (12) for testing the water quality inside the water tank (3), the testing mechanism (12) including: Water frame (121) is connected to both the left and right sides of the water storage tank (3). The cover plate (122) is slidably provided in the middle of the water frame (121). The TDS water quality test pen (124) is slidably mounted on the upper part of the water frame (121). The TDS water quality test pen (124) slides perpendicular to the water frame (121). When the TDS water quality test pen (124) moves downward, it will press the cover plate (122).

5. The intelligent water replenishment system for a secondary water supply tank according to claim 4, characterized in that, It also includes: Four elastic elements (123) connect the cover plate (122) and the water frame (121).

Citation Information

Patent Citations

  • Secondary water supply tank

    CN205475459U

  • Automatic secondary water supply equipment

    CN114922257A

  • Water supplementing system of water heater

    CN209054780U

  • Condensate water drainage mechanism of medical refrigerated centrifuge

    CN211134333U