Environment-friendly sanitary campus direct drinking machine without pressure barrel

Abstract

The utility model discloses an environment-friendly sanitary campus direct drinking machine without a pressure barrel, which comprises a filter system externally connected with a water source, and the filter system is sequentially connected with a heat exchanger and a hot water container; boiled water in the hot water container is directly connected with a boiled water outlet through a branch pipe and flows into the heat exchanger through another branch pipe, and a pressure reducing valve and a first water inlet valve are sequentially installed on a connecting pipeline of the filtering system and the heat exchanger. The heat exchanger is communicated with the warm water buffering water tank, and a plurality of warm water outlet pipes are arranged on the warm water buffering water tank at intervals. A pressure barrel of a traditional machine is replaced with the warm water heat preservation water tank, sufficient water supply and stable water supply pressure need to be guaranteed after the pressure barrel is omitted, the pressure reducing valve is additionally arranged at the rear end of the filtering system for improving taste, stable work of the hot water container is guaranteed, and the problem that bacteria breed in the pressure barrel can be effectively solved after the pressure barrel is omitted; the problems that in the prior art, raw water is directly heated and boiled to be drunk by students, the amount of water used in peak hours is insufficient, and warm boiled water cannot be continuously supplied can be effectively solved.

Description

Technical Field

[0001] This utility model relates to campus drinking water dispensers, and more particularly to an environmentally friendly and hygienic campus drinking water dispenser without a pressure tank. Background Technology

[0002] In the late 1990s, as people paid increasing attention to drinking water safety and health, direct drinking water machines began to enter the market. Companies introduced this technology into campus direct drinking water systems to meet the needs of campuses for safe, convenient and energy-efficient drinking water.

[0003] Currently, most school drinking water systems on the market still use water heaters, which directly heat and boil raw water for students to drink. Over time, scale buildup inside the water heaters, poor raw water quality, and lack of heat retention can all affect students' health. Some equipment manufacturers have also tried to apply water purification systems to school drinking water systems. Research has found that their equipment filtration systems all use pressure tanks at the back end. The pressure tanks are mainly used to store purified water filtered through reverse osmosis membranes when users are not taking water. When users need water, it is directly output from the pressure tank.

[0004] The original working principle of the company's equipment: such as Figure 1 As shown, tap water enters through the inlet pipe (which has a low-pressure switch 1). The inlet pipe connects to the pre-physical adsorption device (primary filter cotton adsorption device, activated carbon adsorption device, secondary filter cotton adsorption device), the membrane filtration system (wastewater is discharged through the pipe drain outlet, and a drain valve 2 is installed on the pipe), and the post-physical adsorption device (activated carbon adsorption device). An inlet valve 2 3 and a booster pump 4 are installed on the pipeline between the post-physical adsorption device and the membrane filtration system.

[0005] Cold inlet, hot outlet: Filtered water is connected to the heat exchanger through a water supply pipe. The water supply pipe is equipped with a high-pressure switch 5, a pressure tank, and an inlet valve 6. Warm water flows into the hot water tank of the heat exchanger for heating. Hot inlet, cold outlet: Boiling water in the hot water tank is directly connected to the boiling water outlet through a branch pipe. The boiling water then enters the heat exchanger through another branch pipe. At this time, warm water is connected to multiple warm water outlets through multiple branch pipes via the heat exchanger's outlet pipe.

[0006] The aforementioned water purifier system suffers from the problem of pressure tanks failing to empty for extended periods, leading to bacterial growth. The hygiene and health issues arising from the current design of these pressure tanks remain unresolved. Furthermore, the traditional method of directly heating and boiling raw water for students to drink results in insufficient water supply during peak hours, making it difficult to continuously provide warm water. Utility Model Content

[0007] To overcome the shortcomings of existing technologies, the purpose of this utility model is to provide an environmentally friendly and hygienic campus drinking fountain without a pressure tank. This can effectively solve the problem of bacteria growing in pressure tanks due to prolonged lack of emptying, while ensuring sufficient water supply during peak periods when multiple outlets supply water simultaneously.

[0008] To address the problems in the existing technology, the technical solution of this utility model is as follows:

[0009] An environmentally friendly and hygienic campus drinking fountain without a pressure tank includes a filtration system for an external water source. The filtration system is connected in sequence to a heat exchanger and a hot water tank. Boiling water from the hot water tank is directly connected to the hot water outlet through one pipe and flows into the heat exchanger through another pipe. A pressure reducing valve and a water inlet valve are installed in sequence on the pipeline connecting the filtration system and the heat exchanger.

[0010] The heat exchanger is connected to a warm water buffer tank, which is equipped with several spaced-apart warm water outlet pipes.

[0011] Furthermore, the hot water tank is connected to the warm water buffer tank. The warm water buffer tank is equipped with a heating rod connected to an external power source near the bottom. Several warm water outlet pipes are spaced apart at the bottom of the warm water buffer tank. Each warm water outlet pipe is equipped with a valve, and the end is a warm water outlet.

[0012] Furthermore, both the hot water tank and the warm water buffer tank are equipped with temperature probes on their outer walls, with the temperature probe on the outer wall of the warm water buffer tank being higher than the heating rod inside.

[0013] Furthermore, the bottom of the warm water buffer tank is also equipped with an overflow pipe and a drain pipe at intervals. The overflow pipe extends upward and its opening is located on the top plate of the tank. The overflow pipe and the drain pipe are connected through pipelines to discharge outside the machine body.

[0014] Furthermore, a water supply valve and a flow-through UV germicidal lamp are sequentially installed on the connecting pipe between the hot water tank and the warm water buffer tank.

[0015] Furthermore, the warm water buffer tank is installed inside the housing, located above the water receiving area of ​​the water purifier.

[0016] Furthermore, the filtration system and the hot water tank are respectively placed on the left and right sides of the bottom plate inside the shell to balance the stability of the entire water purifier body.

[0017] Furthermore, the heat exchanger is located inside the housing corresponding to the water receiving area of ​​the water purifier.

[0018] Compared with the prior art, the advantages of this utility model are as follows:

[0019] 1. This utility model replaces the pressure tank setting of the traditional machine with a warm water insulated tank. After eliminating the pressure tank, to ensure sufficient water supply and stable water pressure, a pressure reducing valve is added at the end of the filtration system to improve taste. This can stabilize the inlet water pressure of the downstream stage within 3 kg (the volume of the warm water buffer tank is 36L, and the inlet water pressure is stabilized within 3 kg), ensuring the stable operation of the hot water tank. Eliminating the pressure tank can effectively solve the problem of bacteria growth in the pressure tank.

[0020] 2. This utility model eliminates the pressure tank, which also eliminates the high-pressure switch, reducing system costs. Eliminating the pressure tank also saves space and improves hygiene and safety for the entire device.

[0021] 3. The hot water tank and the warm water buffer tank of this utility model are equipped with a flow-through UV sterilization lamp on the connecting pipe, which further sterilizes the directly used warm water and improves the quality of the warm water.

[0022] 4. This utility model can effectively solve the problem of insufficient water supply and inability to continuously supply warm water during peak periods when the traditional method of directly heating and boiling raw water for students to drink is used.

[0023] 5. The heating rod inside the warm water buffer tank of this utility model can maintain the water temperature of the warm water buffer tank, and can also heat it to boiling water when necessary to meet the supply demand for boiling water. Attached Figure Description

[0024] Figure 1 This is a schematic diagram illustrating the working principle of existing technology.

[0025] Figure 2 This is a schematic diagram of the structure of this utility model.

[0026] Figure 3 This is a schematic diagram showing the installation location of the warm water buffer tank of this utility model. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] An environmentally friendly and hygienic campus drinking fountain without a pressure tank includes a filtration system for an external water source. The filtration system is connected in sequence to a heat exchanger and a hot water tank. Boiling water from the hot water tank is directly connected to the hot water outlet through one pipe and flows into the heat exchanger through another pipe. A pressure reducing valve 16 and an inlet valve 6 are installed in sequence on the pipeline connecting the filtration system and the heat exchanger. The heat exchanger is connected to a warm water buffer tank 7, and the warm water buffer tank 7 is provided with several spaced warm water outlet pipes 8.

[0029] Furthermore, the hot water tank is connected to the warm water buffer tank 7. The warm water buffer tank 7 is equipped with a heating rod 9 connected to an external power source near the bottom. Several warm water outlet pipes 8 are spaced apart at the bottom of the warm water buffer tank 7. Each warm water outlet pipe is equipped with a valve 10, and the end is a warm water outlet.

[0030] Furthermore, the filtration system includes a pre-physical adsorption device, a membrane filtration system, and a post-physical adsorption device connected in sequence. The pre-physical adsorption device is connected to a water source (tap water) through an inlet pipe. A low-pressure switch 1 is installed on the inlet pipe. An inlet valve 2 3 and a booster pump 4 are installed on the pipe between the post-physical adsorption device and the membrane filtration system.

[0031] Furthermore, the physical adsorption device consists of a primary filter cotton adsorption device, an activated carbon adsorption device, and a secondary filter cotton adsorption device connected in series, with the subsequent physical adsorption device being an activated carbon adsorption device.

[0032] Furthermore, both the hot water tank and the warm water buffer tank are equipped with temperature probes 11 on their outer walls. The temperature probes 11 on the outer walls of the warm water buffer tank are higher than the heating rods 9 inside, maintaining the water temperature in the warm water buffer tank. If necessary, the heating rods 9 can be powered on to heat the water to boiling point to meet the demand for hot water supply.

[0033] The bottom of the warm water buffer tank is also equipped with an overflow pipe 12 and a drain pipe 13 at intervals. The overflow pipe extends upward and its opening is located on the top plate of the tank. The overflow pipe 12 and the drain pipe (a solenoid valve can be installed on the drain pipe for regular cleaning and drainage) 13 are connected through a pipeline to discharge out of the machine body. Generally, the pipeline is designed on the rear side of the machine body for easy discharge.

[0034] Furthermore, a water supply valve 14 and a flow-through UV sterilization lamp 15 are sequentially installed on the connecting pipe between the hot water tank and the warm water buffer tank 7 to further sterilize the directly drinkable warm water and improve the quality of the warm water.

[0035] Furthermore, the warm water buffer tank 7 is installed inside the housing at the top of the water receiving area of ​​the water purifier.

[0036] Furthermore, the filtration system and the hot water tank are respectively placed on the left and right sides of the bottom plate inside the casing to balance the stability of the entire water purifier body.

[0037] Furthermore, the heat exchanger is located inside the housing corresponding to the water receiving area of ​​the water purifier.

[0038] This section further explains the principle behind the elimination of the pressure relief tank and high-pressure switch:

[0039] The pressure tank is mainly used to store purified water filtered through the reverse osmosis membrane when the user is not drawing water. When the user needs to draw water, it is directly output from the pressure tank. The pressure tank also serves as a pressure balancing zone in the system to prevent excessive pressure.

[0040] When the pressure tank is removed, the researchers ensured proper pressure balance by adding a pressure reducing valve 16 in front of the inlet valve 6: ensuring that the hot water tank is always full, so that boiling water from the hot water tank can be directly connected to the boiling water outlet through a branch pipe; the warm water from the hot water tank after passing through the heat exchanger continuously enters the warm water buffer tank, and when the warm water buffer tank 7 is full, it flows out through the overflow pipe.

[0041] The product is designed with a 36L capacity for the warm water buffer tank 7 and a stable inlet water pressure of less than 3 kg to ensure stable operation of the hot water tank. Of course, the inlet water pressure and the capacity of the warm water buffer tank 7 can be adjusted according to actual conditions.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pressure-free, environmentally friendly, and hygienic campus drinking fountain, comprising a filtration system for an external water source, wherein the filtration system is sequentially connected to a heat exchanger and a hot water tank; hot water from the hot water tank is directly connected to the hot water outlet via one pipe and flows into the heat exchanger via another pipe, characterized in that: A pressure reducing valve and a water inlet valve are installed sequentially on the pipeline connecting the filtration system and the heat exchanger. The heat exchanger is connected to a warm water buffer tank, which is equipped with several spaced-apart warm water outlet pipes.

2. The environmentally friendly and hygienic campus drinking fountain without a pressure tank according to claim 1, characterized in that, The hot water tank is connected to the warm water buffer tank. The warm water buffer tank is equipped with a heating rod connected to an external power source near the bottom. Several warm water outlet pipes are spaced apart at the bottom of the warm water buffer tank, and each warm water outlet pipe is equipped with a valve.

3. The environmentally friendly and hygienic campus drinking fountain without a pressure tank according to claim 1, characterized in that, Temperature probes are installed on the outer walls of both the hot water tank and the warm water buffer tank. The temperature probe on the outer wall of the warm water buffer tank is higher than the heating rod inside.

4. The environmentally friendly and hygienic campus drinking fountain without a pressure tank according to claim 3, characterized in that, The bottom of the warm water buffer tank is also equipped with an overflow pipe and a drain pipe at intervals. The overflow pipe extends upward and its opening is located on the top plate of the tank. The overflow pipe and the drain pipe are connected by a pipeline to discharge the water outside the machine.

5. The environmentally friendly and hygienic campus drinking fountain without a pressure tank according to claim 1, characterized in that, The hot water tank and the warm water buffer tank are connected by a water supply valve and a flow-through UV sterilization lamp in sequence.

6. The environmentally friendly and hygienic campus drinking fountain without a pressure tank according to claim 1, characterized in that, The warm water buffer tank is installed inside the shell and located above the water receiving area of ​​the water purifier.

7. The environmentally friendly and hygienic campus drinking fountain without a pressure tank according to claim 1 or 6, characterized in that, The filtration system and the hot water tank are respectively located on the left and right sides of the bottom plate inside the shell.

8. The environmentally friendly and hygienic campus drinking fountain without a pressure tank according to claim 1 or 6, characterized in that, The heat exchanger is located inside the housing, corresponding to the water receiving area of ​​the water purifier.

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