Ozone preparation system with variable oxygen production function

Abstract

The utility model belongs to ozone preparation technical field provides an ozone preparation system with variable oxygen production function, including air compressor, air compressor downstream intercommunication has first air storage tank, first air storage tank downstream intercommunication has first filter, first filter downstream intercommunication has freeze drying machine, freeze drying machine downstream intercommunication has second filter, second filter downstream intercommunication has constant pressure device, constant pressure device downstream intercommunication has no heat adsorption dryer, no heat adsorption dryer downstream intercommunication has second air storage tank, second air storage tank downstream intercommunication has pressure swing adsorption oxygen generator, pressure swing adsorption oxygen generator downstream intercommunication has oxygen storage tank, oxygen storage tank downstream intercommunication has third filter, third filter downstream intercommunication has ozone generator. The utility model can carry out the flexible adjustment of ozone output, avoids the energy waste, and makes the failure rate of no heat adsorption dryer and pressure swing adsorption oxygen generator greatly reduce, and the service life greatly prolongs.

Description

Technical Field

[0001] This utility model relates to the field of ozone preparation technology, and in particular to an ozone preparation system with variable oxygen production function. Background Technology

[0002] With my country's economic development and increasing emphasis on environmental protection, ozone applications are gaining popularity across various industries. Due to its green and environmentally friendly nature and lack of secondary pollution, it is widely used in disinfection, medical treatment, air and water purification, food preservation, industrial wastewater treatment, and agriculture. Its high efficiency and environmental friendliness have driven innovation in multiple industries. Specifically, ozone decomposes organic pollutants (such as pesticides and heavy metals) in water through its strong oxidizing properties, killing bacteria and viruses. It is commonly used in water treatment plants and swimming pools for disinfection, leaving the treated water odorless and free of chemical residues. Ozone can also decompose toxic substances (such as cyanide and phenol) in industrial wastewater, improving water safety. In industrial or hospital environments, ozone can rapidly degrade formaldehyde and odors, and inactivate pathogenic microorganisms in the air.

[0003] Most industrial ozone production methods involve generating ozone through a high-voltage discharge of compressed air (or oxygen) using an ozone generator. Therefore, the gas source is crucial for ensuring the normal operation of the ozone generator. The power consumption of the gas source treatment system accounts for approximately 50% of the entire ozone production system. Among these, the energy consumption of the air compressor in the gas source treatment system accounts for approximately 50% of the total system energy consumption, while the energy consumption of the adsorption dryer and pressure swing adsorption oxygen generator in the gas source treatment system accounts for approximately 13-15% of the total system energy consumption.

[0004] Currently, ozone generation systems in waterworks and wastewater treatment plants are generally designed for maximum treatment capacity. However, in actual operation, the initial treatment volume often falls short of the design capacity. Furthermore, the pollutant content of raw water varies across seasons, which also results in the treatment volume falling short of the design capacity. Consequently, ozone generation systems designed for maximum capacity are often not operating at full load and are generally operating below their rated output.

[0005] In an ozone production system operating below rated capacity, although the ozone generator can adjust its output according to the volume of water being processed, the air compressor, adsorption dryer, and pressure swing adsorption (PSA) oxygen generator cannot adjust their output and always operate at full load. In this case, a large amount of excess compressed air generated by the air compressor is discharged by the adsorption dryer and PSA oxygen generator during the regeneration process. This not only results in low air source utilization and serious energy waste, but also makes the PSA oxygen generator and adsorption dryer prone to high-pressure failures and short service life due to prolonged high-pressure operation. Utility Model Content

[0006] In order to overcome the shortcomings of the prior art as mentioned above, in-depth research was conducted, and after a great deal of creative work, this utility model was completed.

[0007] Specifically, the technical problem to be solved by this utility model is to provide an ozone preparation system with variable oxygen generation function, so as to solve the technical problems of high equipment failure rate and serious energy waste when the current ozone preparation system is running below the rated output.

[0008] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows: An ozone generation system with variable oxygen generation function includes an air compressor, a first air storage tank downstream of the air compressor, a first filter downstream of the first air storage tank, a freeze dryer downstream of the first filter, a second filter downstream of the freeze dryer, a constant pressure device downstream of the second filter, a heatless adsorption dryer downstream of the constant pressure device, a second air storage tank downstream of the heatless adsorption dryer, a pressure swing adsorption (PSA) oxygen generator downstream of the second air storage tank, an oxygen storage tank downstream of the PSA oxygen generator, a third filter downstream of the oxygen storage tank, and an ozone generator downstream of the third filter.

[0009] As an improved technical solution, the constant pressure device is a self-operated pressure regulating valve of the pressure reducing type with downstream pressure regulation.

[0010] As an improved technical solution, the air outlet of the air compressor is connected to the air inlet of the first air storage tank. Two first filters are provided, connected in parallel and series. The air outlet of the first air storage tank is connected to the air inlet of one of the first filters, and the air outlet of the other first filter is connected to the air inlet of the freeze dryer. The air outlet of the freeze dryer is connected to the air inlet of the second filter, and the air outlet of the second filter is connected to the air inlet of the self-regulating pressure regulating valve. The valve's outlet is connected to the inlet of the heatless adsorption dryer, the outlet of the heatless adsorption dryer is connected to the inlet of the second air storage tank, the outlet of the second air storage tank is connected to the inlet of the pressure swing adsorption oxygen generator, the outlet of the pressure swing adsorption oxygen generator is connected to the inlet of the oxygen storage tank, two third filters are provided, the two third filters are connected in parallel and in series, the outlet of the oxygen storage tank is connected to the inlet of one of the third filters, and the outlet of the other third filter is connected to the inlet of the ozone generator.

[0011] As an improved technical solution, the self-regulating pressure regulating valve includes a valve body, with an air inlet and an air outlet at both ends of the valve body. The air inlet of the valve body is connected to the air outlet of the second filter through a pre-valve pipe, and the air outlet of the valve body is connected to the air inlet of the heatless adsorption dryer through a post-valve pipe. The valve body also has an integrally formed baffle plate, which divides the inner cavity of the valve body into an air inlet chamber and an air outlet chamber. The air inlet chamber is connected to the air inlet of the valve body, and the air outlet chamber is connected to the air outlet of the valve body. The baffle plate has a mounting hole, and a valve seat is fixedly installed on the baffle plate at the mounting hole position. A valve cover is fixedly installed on the top of the valve body. A detection and execution mechanism is provided outside the valve body. A valve stem is provided between the detection and execution mechanism and the valve body. One end of the valve stem is connected to the push rod of the detection and execution mechanism. The other end of the valve stem passes through the valve cover and extends into the valve body, where a valve core is fixedly installed. The valve core is correspondingly arranged with the valve seat. An adjustment component is provided between the top of the valve cover and the valve stem.

[0012] As an improved technical solution, a lower pressure plate is fixedly installed on the top of the valve body, and an upper top plate is fixedly installed on the side of the lower pressure plate away from the valve body using a support rod, and the detection and execution mechanism is fixedly installed on the upper top plate; The valve cover is fixedly pressed onto the valve body by the lower pressure plate, and the valve cover has a through hole along its axial direction, through which the valve stem passes.

[0013] As an improved technical solution, a limiting nut is threaded onto the valve stem. The limiting nut is located between the valve cover and the detection actuator, and when the valve core and the valve seat are in a sealed contact state, the limiting nut abuts against the valve cover.

[0014] As an improved technical solution, the adjusting assembly is located between the lower pressure plate and the upper top plate, and the adjusting assembly includes an adjusting tray, an adjusting spring, and a positioning baffle. The adjusting tray is threaded onto the valve cover, the positioning baffle is located close to the upper top plate, the adjusting spring is fitted onto the valve cover, and the adjusting spring is located between the adjusting tray and the positioning baffle. The two ends of the adjusting spring abut against the adjusting tray and the positioning baffle, respectively. A pressing nut is threaded onto the top of the valve stem, and the pressing nut is located on the side of the positioning baffle away from the adjusting spring. Under the action of the adjusting spring, the positioning baffle abuts against the pressing nut.

[0015] As an improved technical solution, the other end of the valve stem is further provided with a valve core baffle, a valve core pressure plate, and a locking nut. The valve core is located between the valve core pressure plate and the valve core baffle, and the valve core baffle, the valve core, and the valve core pressure plate are sequentially fitted onto the valve stem. The valve core baffle has a valve core positioning groove on the side facing the valve core pressure plate, and the valve core is located in the valve core positioning groove. The locking nut is threaded onto the valve stem, and the locking nut is located on the side of the valve core pressure plate away from the valve core.

[0016] As an improved technical solution, a cylinder liner is also fixedly installed in the valve body, and a sealed cavity is formed between the cylinder liner and the valve cover. A piston is fixedly installed on the valve stem, the piston is located in the sealed cavity, and the piston is adapted to the inner diameter of the cylinder liner and is slidably connected to the cylinder liner by a sealing ring. The cylinder liner is provided with a guide slide hole at one end near the valve core. A guide slide sleeve for limiting the sliding of the valve stem is fixedly installed on the cylinder liner at the position of the guide slide hole. The valve stem passes through the guide slide sleeve.

[0017] As an improved technical solution, a pressure tapping pipe is provided between the detection actuator and the downstream pipeline of the valve. One end of the pressure tapping pipe is connected to the air inlet of the detection actuator, and the other end of the pressure tapping pipe is connected to the downstream pipeline of the valve. A condenser is provided on the pressure tapping pipe. Alternatively, a pressure tapping pipe may be provided between the detection actuator and the valve body. One end of the pressure tapping pipe is connected to the air inlet of the detection actuator, and the other end of the pressure tapping pipe is connected to the valve body and communicates with the air outlet of the valve body. A condenser may also be provided on the pressure tapping pipe.

[0018] After adopting the above technical solution, the beneficial effects of this utility model are: This ozone generation system with variable oxygen production function operates as follows: an air compressor operates, generating compressed air which is temporarily stored in a first air storage tank. The compressed air then undergoes initial filtration through a first filter, followed by moisture removal in a freeze dryer. After further filtration, it enters a second filter for further filtration. Following this second filter, the compressed air enters a constant pressure device, where its flow rate is regulated before it undergoes drying in a heatless adsorption dryer. The dried compressed air then enters a second air storage tank for temporary storage. From there, it enters a pressure swing adsorption (PSA) oxygen generator to produce oxygen. This oxygen is then temporarily stored in an oxygen storage tank, followed by filtration through a third filter. Finally, the oxygen is delivered to an ozone generator for ozone generation.

[0019] This ozone production system with variable oxygen generation capability not only enables online ozone production but also allows for flexible adjustment of ozone output based on the actual water treatment volume. A constant pressure device at the inlet of the heatless adsorption dryer is linked to the ozone generator's ozone production flow rate. When the ozone generator's output falls below its rated capacity, the inlet flow rate of the heatless adsorption dryer is adjusted, simultaneously regulating the inlet flow rate of the pressure swing adsorption (PSA) oxygen generator. Furthermore, when the inlet flow rates of both the heatless adsorption dryer and the PSA oxygen generator change, the air compressor automatically adjusts the flow rate of the generated compressed air through high-pressure unloading and low-pressure loading functions. At this time, the air compressor's output... The air volume refers to the actual amount of air required by the heatless adsorption dryer, pressure swing adsorption oxygen generator, and ozone generator. Since no excess compressed air is generated, there is no waste of electrical energy, thus avoiding energy waste. This significantly reduces the energy consumption of the air compressor, heatless adsorption dryer, and pressure swing adsorption oxygen generator, resulting in substantial annual electricity savings for the entire system. Furthermore, the heatless adsorption dryer and pressure swing adsorption oxygen generator can prepare the required air volume based on the ozone flow rate of the ozone generator. Compared to the traditional full-load operation under high pressure for extended periods, this significantly reduces the failure rate and extends the service life. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0021] Figure 1 This is a process flow diagram of the ozone preparation system with variable oxygen generation function of this utility model; Figure 2 This is a front view structural diagram of the constant pressure device of this utility model; Figure 3 This is a cross-sectional structural schematic diagram of the constant pressure device of this utility model; Figure 4 This is a schematic diagram of the valve body of the constant pressure device of this utility model; Figure reference numerals: 1-Air compressor; 2-First air storage tank; 3-First filter; 4-Refrigerator; 5-Second filter; 6-Constant pressure device; 7-Heatless adsorption dryer; 8-Second air storage tank; 9-Pressure swing adsorption oxygen generator; 10-Oxygen storage tank; 11-Third filter; 12-Ozone generator; 13-Valve body; 1301-Baffle plate; 14-Post-valve pipe; 15-Inlet chamber; 16-Outlet chamber; 17-Valve seat; 18-Valve cover; 19-Detection actuator; 20-Valve stem; 21-Valve core; 22-Lower pressure plate; 23-Support rod; 24-Upper top plate; 25-Limit nut; 26-Adjusting tray; 27-Adjusting spring; 28-Positioning baffle; 29-Lower pressure nut; 30-Valve core baffle; 31-Valve core pressure plate; 32-Locking nut; 33-Cylinder liner; 34-Piston; 35-Sealing ring; 36-Guide sleeve; 37-Pressure tapping pipe; 38-Condenser. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0024] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0025] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0026] like Figure 1As shown, this embodiment provides an ozone generation system with variable oxygen generation function, including an air compressor 1, a first air storage tank 2 connected downstream of the air compressor 1, a first filter 3 connected downstream of the first air storage tank 2, a freeze dryer 4 connected downstream of the first filter 3, a second filter 5 connected downstream of the freeze dryer 4, a constant pressure device 6 connected downstream of the second filter 5, a heatless adsorption dryer 7 connected downstream of the constant pressure device 6, a second air storage tank 8 connected downstream of the heatless adsorption dryer 7, a pressure swing adsorption oxygen generator 9 connected downstream of the second air storage tank 8, an oxygen storage tank 10 connected downstream of the pressure swing adsorption oxygen generator 9, a third filter 11 connected downstream of the oxygen storage tank 10, and an ozone generator 12 connected downstream of the third filter 11.

[0027] In some embodiments, such as Figures 2 to 4 As shown, the constant pressure device 6 is a self-operated pressure regulating valve of the pressure-reducing type. The self-operated pressure regulating valve is an intelligent valve that requires no external energy source. It utilizes the pressure of the medium itself to drive the actuator and achieve automatic pressure regulation. During operation, when the ozone generator 12 operates below its rated output, the demand for oxygen to produce ozone changes simultaneously. The gas supply produced by the heatless adsorption dryer 7 and the pressure swing adsorption oxygen generator 9 is higher than the gas supply consumed by the ozone generator 12. This causes the downstream pressure of the self-operated pressure regulating valve to increase. The self-operated pressure regulating valve detects this increase and reduces its flow area to decrease the flow rate entering the heatless adsorption dryer 7. The pressure after the valve is reduced. Thus, by setting the pressure after the valve of the self-regulating pressure regulating valve, the air intake flow of the heatless adsorption dryer 7 is adjusted, and the air intake flow of the pressure swing adsorption oxygen generator 9 is also adjusted. When the air intake flow of the heatless adsorption dryer 7 and the pressure swing adsorption oxygen generator 9 changes, the air compressor 1 automatically adjusts the flow of the compressed air it generates through the high-pressure unloading and low-pressure loading functions. At this time, the air output of the air compressor 1 is the actual amount of air required by the heatless adsorption dryer 7, the pressure swing adsorption oxygen generator 9 and the ozone generator 12, and no excess compressed air is generated.

[0028] In some embodiments, such as Figures 1 to 3As shown, the air outlet of the air compressor 1 is connected to the air inlet of the first air tank 2. Two first filters 3 are provided, connected in parallel and series. The air outlet of the first air tank 2 is connected to the air inlet of one of the first filters 3, and the air outlet of the other first filter 3 is connected to the air inlet of the refrigerated dryer 4. The air outlet of the refrigerated dryer 4 is connected to the air inlet of the second filter 5, and the air outlet of the second filter 5 is connected to the air inlet of the self-regulating pressure regulating valve. The air outlet of the self-regulating pressure regulating valve is connected to the air inlet of the heatless... The air inlet of the adsorption dryer 7 is connected to the air outlet of the heatless adsorption dryer 7, which is connected to the air inlet of the second air storage tank 8. The air outlet of the second air storage tank 8 is connected to the air inlet of the pressure swing adsorption oxygen generator 9, which is connected to the air inlet of the oxygen storage tank 10. There are two third filters 11, which are connected in parallel and in series. The air outlet of the oxygen storage tank 10 is connected to the air inlet of one of the third filters 11, and the air outlet of the other third filter 11 is connected to the air inlet of the ozone generator 12.

[0029] This ozone generation system with variable oxygen production function operates as follows: Air compressor 1 operates, delivering the generated compressed air to a first air storage tank 2 for temporary storage. Then, the compressed air from the first air storage tank 2 enters a first filter 3 for initial filtration. Afterward, it enters a freeze dryer 4 for moisture removal, and then enters a second filter 5 for further filtration. After passing through the second filter 5, it enters a constant pressure device 6. After flow regulation by the constant pressure device 6, it enters a heatless adsorption dryer 7 for drying. The dried compressed air from the heatless adsorption dryer 7 enters a second air storage tank 8 for temporary storage. Then, it enters a pressure swing adsorption oxygen generator 9 from the second air storage tank 8 to produce oxygen. The produced oxygen enters an oxygen storage tank 10 for temporary storage. Then, the oxygen from the oxygen storage tank 10 enters a third filter 11 for filtration. Finally, the oxygen is delivered to an ozone generator 12, where ozone is generated.

[0030] In one embodiment, such as Figures 2 to 4As shown, the self-regulating pressure regulating valve includes a valve body 13. The valve body 13 has an inlet and an outlet at its two ends. The inlet of the valve body 13 is connected to the outlet of the second filter 5 via a pre-valve pipe, and the outlet of the valve body 13 is connected to the inlet of the heatless adsorption dryer 7 via a post-valve pipe 14. The valve body 13 also has an integrally formed baffle plate 1301, which divides the inner cavity of the valve body 13 into an inlet chamber 15 and an outlet chamber 16. The inlet chamber 15 is connected to the inlet of the valve body 13, and the outlet chamber 16 is connected to the outlet of the valve body 13. A mounting hole is provided on the baffle plate 1301, and a valve seat 17 is fixedly installed on the baffle plate 1301 at the mounting hole position; a valve cover 18 is fixedly installed on the top of the valve body 13, and a detection actuator 19 is provided outside the valve body 13. A valve stem 20 is provided between the detection actuator 19 and the valve body 13. One end of the valve stem 20 is connected to the push rod of the detection actuator 19, and the other end of the valve stem 20 extends through the valve cover 18 into the valve body 13 and is fixedly installed with a valve core 21. The valve core 21 is correspondingly arranged with the valve seat 17, and an adjustment component is provided between the top of the valve cover 18 and the valve stem 20. The regulating component is used to set the downstream pressure of the self-operated pressure regulating valve. The detection actuator 19 is used to detect the downstream pressure. When the downstream pressure is too high, the detection actuator 19 drives the valve stem 20 to descend via the push rod, causing the valve core 21 to move closer to the valve seat 17, reducing the airflow area, thereby reducing the air flow and lowering the downstream pressure. When the downstream pressure is too low, the valve stem 20 rises, causing the valve core 21 to move away from the valve seat 17, increasing the airflow area, thereby increasing the air flow and raising the downstream pressure. In this way, the self-operated pressure regulating valve achieves intelligent regulation of the required flow rate.

[0031] In some embodiments, the detection actuator 19 may adopt a conventional diaphragm structure. The valve core 21 is moved within a set pressure range by the medium pressure acting on both sides of the diaphragm, thereby adjusting the valve opening. Since the diaphragm actuator is a conventional technical means known to those skilled in the art, it will not be described in detail here.

[0032] In some embodiments, such as Figures 2 to 4 As shown, in order to install and fix the detection actuator 19 and the valve cover 18, a lower pressure plate 22 is fixedly installed on the top of the valve body 13. An upper top plate 24 is fixedly installed on the side of the lower pressure plate 22 away from the valve body 13 by a support rod 23. The detection actuator 19 is fixedly installed on the upper top plate 24. The valve cover 18 is fixedly pressed onto the valve body 13 by the lower pressure plate 22, and the valve cover 18 has a through hole along its axial direction. The valve stem 20 passes through the through hole and penetrates the valve cover 18.

[0033] In some embodiments, such as Figures 2 to 4As shown, a limit nut 25 is threadedly installed on the valve stem 20. The limit nut 25 is located between the valve cover 18 and the detection actuator 19. When the valve core 21 and the valve seat 17 are in a sealed contact state, the limit nut 25 abuts against the valve cover 18, restricting the valve stem 20 from continuing to move, thereby protecting the valve core 21.

[0034] In some embodiments, such as Figures 2 to 4 As shown, the adjusting assembly is located between the lower pressure plate 22 and the upper top plate 24, and the adjusting assembly includes an adjusting tray 26, an adjusting spring 27, and a positioning baffle 28. The adjusting tray 26 is threaded onto the valve cover 18, and the positioning baffle 28 is located close to the upper top plate 24. The adjusting spring 27 is fitted onto the valve cover 18 and is located between the adjusting tray 26 and the positioning baffle 28. The two ends of the adjusting spring 27 abut against the adjusting tray 26 and the positioning baffle 28, respectively. A pressing nut 29 is threaded onto the top of the valve stem 20. The pressing nut 29 is located on the side of the positioning baffle 28 away from the adjusting spring 27, and under the action of the adjusting spring 27, the positioning baffle 28 abuts against the pressing nut 29. The adjustable assembly allows for pressure setting by rotating the adjusting tray 26. The reaction force of the adjusting spring 27 causes the valve core 21 to move within the set pressure range, thus adjusting the valve opening. When the downstream pressure is too high, the detection actuator 19 drives the valve stem 20 to descend via the push rod, causing the valve core 21 to move closer to the valve seat 17, reducing the air flow. Simultaneously, the valve stem 20 drives the positioning baffle 28 to move, compressing the adjusting spring 27. When the downstream pressure is too low, the reaction force of the adjusting spring 27 causes the valve stem 20 to rise, causing the valve core 21 to move away from the valve seat 17, increasing the air flow.

[0035] In one embodiment, such as Figure 2 and Figure 3 As shown, the valve cover 18 includes an integrally formed pressing and fixing part and a threaded mounting part. The pressing and fixing part is located between the lower pressure plate 22 and the valve body 13, and the pressing and fixing part is fixedly installed on the valve body 13 through the lower pressure plate 22. The threaded mounting part extends through the lower pressure plate 22 to the space between the lower pressure plate 22 and the upper top plate 24. The adjusting tray 26 is threadedly installed on the threaded mounting part.

[0036] In some embodiments, such as Figures 2 to 4As shown, the other end of the valve stem 20 is also provided with a valve core baffle 30, a valve core pressure plate 31, and a locking nut 32. The valve core 21 is located between the valve core pressure plate 31 and the valve core baffle 30, and the valve core baffle 30, valve core 21, and valve core pressure plate 31 are sequentially fitted onto the valve stem 20. The valve core baffle 30 has a valve core 21 positioning groove on the side facing the valve core pressure plate 31, and the valve core 21 is located in the valve core 21 positioning groove. The locking nut 32 is threaded onto the valve stem 20, and the locking nut 32 is located on the side of the valve core pressure plate 31 away from the valve core 21. This valve core 21 installation structure facilitates precise and rapid installation of the valve core 21, and facilitates disassembly and replacement of the valve core 21, making the valve core 21 replacement operation simple and convenient.

[0037] In some embodiments, such as Figures 2 to 4 As shown, a cylinder liner 33 is also fixedly installed inside the valve body 13. A sealed cavity is formed between the cylinder liner 33 and the valve cover 18. A piston 34 is fixedly installed on the valve stem 20. The piston 34 is located within the sealed cavity, and its inner diameter is matched to that of the cylinder liner 33. A sealing ring 35 is used to achieve a sealing and sliding connection between the piston 34 and the cylinder liner 33. A guide slide hole is also provided at one end of the cylinder liner 33 near the valve core 21. A guide sleeve 36 is fixedly installed on the cylinder liner 33 at the position of the guide slide hole to achieve the limiting sliding of the valve stem 20. The valve stem 20 passes through the guide sleeve 36. The structure of the cylinder liner 33 and piston 34 provides the self-operated pressure regulating valve with good sealing performance, effectively preventing compressed air leakage and meeting the requirements for compressed air regulation.

[0038] In one embodiment, such as Figure 2 As shown, a pressure tapping pipe 37 is provided between the detection actuator 19 and the downstream pipeline 14. One end of the pressure tapping pipe 37 is connected to the air inlet of the detection actuator 19, and the other end of the pressure tapping pipe 37 is connected to the downstream pipeline 14. A condenser 38 is provided on the pressure tapping pipe 37. The detection actuator 19 and the downstream pipeline 14 are connected through the pressure tapping pipe 37, so that the downstream pressure can be transmitted to the pressure-sensing diaphragm of the detection actuator 19 through the pressure tapping pipe 37 to realize the downstream pressure feedback. Since the compressed air carries heat, the compressed air entering the pressure tapping pipe 37 will produce condensate due to the temperature difference. The condenser 38 provided on the pressure tapping pipe 37 can effectively remove the condensate and avoid affecting the detection actuator 19.

[0039] In another embodiment, a pressure tapping pipe 37 is provided between the detection actuator 19 and the valve body 13. One end of the pressure tapping pipe 37 is connected to the air inlet of the detection actuator 19, and the other end of the pressure tapping pipe 37 is connected to the valve body 13 and communicates with the air outlet chamber 16 of the valve body 13. A condenser 38 is provided on the pressure tapping pipe 37. The other end of the pressure tapping pipe 37 is connected to the valve body 13, eliminating the need for further pipe welding between the pressure tapping pipe 37 and the downstream pipeline 14, making the installation, use, and operation of the self-operated pressure regulating valve simple and convenient.

[0040] The self-regulating pressure regulating valve can automatically adjust the opening of the valve core 21 by changing the pressure difference before and after the valve, so as to adapt to the pressure changes before and after the valve and control and stabilize the flow through the valve. When the flow changes, the air compressor 1 automatically adjusts the flow of compressed air generated by the high-pressure unloading and low-pressure loading functions. At this time, the air output of the air compressor 1 is the actual amount of air required by the heatless adsorption dryer 7, the pressure swing adsorption oxygen generator 9 and the ozone generator 12. There is no excess compressed air generated, so there is no waste of excess electrical energy.

[0041] Based on the above structure, this ozone preparation system with variable oxygen generation function can not only achieve online ozone production, but also flexibly adjust the ozone output according to the actual amount of water to be treated. A constant pressure device 6, installed at the air inlet of the heatless adsorption dryer 7, is linked to the ozone production flow rate of the ozone generator 12. When the ozone generator 12's output is below its rated capacity, the air inlet flow rate of the heatless adsorption dryer 7 is adjusted, and the air inlet flow rate of the pressure swing adsorption oxygen generator 9 is also adjusted. Furthermore, when the air inlet flow rates of the heatless adsorption dryer 7 and the pressure swing adsorption oxygen generator 9 change, the air compressor 1 automatically adjusts the flow rate of the generated compressed air through high-pressure unloading and low-pressure loading functions. The gas production of unit 1 is the actual gas volume required by the heatless adsorption dryer 7, pressure swing adsorption oxygen generator 9, and ozone generator 12. There is no excess compressed air produced, thus avoiding wasted electrical energy and energy waste. This significantly reduces the energy consumption of the air compressor 1, heatless adsorption dryer 7, and pressure swing adsorption oxygen generator 9, resulting in substantial annual electricity savings for the entire system. Furthermore, the heatless adsorption dryer 7 and pressure swing adsorption oxygen generator 9 can prepare the required gas volume based on the ozone flow rate of ozone generator 12. Compared to the traditional full-load operation under high pressure for extended periods, this significantly reduces the failure rate and extends the service life.

[0042] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. Furthermore, it should be understood that after reading the technical description of this utility model, those skilled in the art can make various alterations, modifications, and / or variations to this utility model, and all such equivalent forms also fall within the scope of protection defined by the appended claims.

Claims

1. An ozone generation system with variable oxygen production function, characterized in that, The device includes an air compressor, downstream of which is connected a first air storage tank, downstream of which is a first filter, downstream of which is a refrigerated dryer, downstream of which is a second filter, downstream of which is a constant pressure device, downstream of which is a heatless adsorption dryer, downstream of which is a second air storage tank, downstream of which is a pressure swing adsorption oxygen generator, downstream of which is an oxygen storage tank, downstream of which is a third filter, and downstream of which is an ozone generator.

2. The ozone generation system with variable oxygen production function according to claim 1, characterized in that, The constant pressure device is a self-operated pressure regulating valve of the pressure reducing type with downstream pressure regulation.

3. The ozone generation system with variable oxygen production function according to claim 2, characterized in that, The air compressor outlet is connected to the air inlet of the first air storage tank. Two first filters are provided, connected in parallel and series. The air outlet of the first air storage tank is connected to the air inlet of one of the first filters, and the air outlet of the other first filter is connected to the air inlet of the freeze dryer. The air outlet of the freeze dryer is connected to the air inlet of the second filter. The air outlet of the second filter is connected to the air inlet of the self-regulating pressure regulating valve. The air outlet of the self-regulating pressure regulating valve is connected to the air inlet of the heatless adsorption dryer. The air outlet of the heatless adsorption dryer is connected to the air inlet of the second air storage tank. The air outlet of the second air storage tank is connected to the air inlet of the pressure swing adsorption oxygen generator. The air outlet of the pressure swing adsorption oxygen generator is connected to the air inlet of the oxygen storage tank. Two third filters are provided, connected in parallel and series. The air outlet of the oxygen storage tank is connected to the air inlet of one of the third filters, and the air outlet of the other third filter is connected to the air inlet of the ozone generator.

4. The ozone generation system with variable oxygen production function according to claim 2, characterized in that, The self-regulating pressure regulating valve includes a valve body, with an air inlet and an air outlet at each end. The air inlet of the valve body is connected to the air outlet of the second filter through a pre-valve pipe, and the air outlet of the valve body is connected to the air inlet of the heatless adsorption dryer through a post-valve pipe. The valve body also has an integrally formed baffle plate, which divides the inner cavity of the valve body into an air inlet chamber and an air outlet chamber. The air inlet chamber is connected to the air inlet of the valve body, and the air outlet chamber is connected to the air outlet of the valve body. The baffle plate has a mounting hole, and a valve seat is fixedly installed on the baffle plate at the mounting hole position. A valve cover is fixedly installed on the top of the valve body. A detection and execution mechanism is provided outside the valve body. A valve stem is provided between the detection and execution mechanism and the valve body. One end of the valve stem is connected to the push rod of the detection and execution mechanism. The other end of the valve stem passes through the valve cover and extends into the valve body, where a valve core is fixedly installed. The valve core is correspondingly arranged with the valve seat. An adjustment component is provided between the top of the valve cover and the valve stem.

5. The ozone generation system with variable oxygen production function according to claim 4, characterized in that, A lower pressure plate is fixedly installed on the top of the valve body, and an upper top plate is fixedly installed on the side of the lower pressure plate away from the valve body by a support rod. The detection and execution mechanism is fixedly installed on the upper top plate. The valve cover is fixedly pressed onto the valve body by the lower pressure plate, and the valve cover has a through hole along its axial direction, through which the valve stem passes.

6. The ozone generation system with variable oxygen production function according to claim 5, characterized in that, A limit nut is threaded onto the valve stem. The limit nut is located between the valve cover and the detection actuator. When the valve core and the valve seat are in a sealed contact state, the limit nut abuts against the valve cover.

7. The ozone generation system with variable oxygen production function according to claim 6, characterized in that, The adjusting assembly is located between the lower pressure plate and the upper top plate, and includes an adjusting tray, an adjusting spring, and a positioning baffle. The adjusting tray is threaded onto the valve cover, the positioning baffle is located near the upper top plate, the adjusting spring is fitted onto the valve cover, and the adjusting spring is located between the adjusting tray and the positioning baffle. The two ends of the adjusting spring abut against the adjusting tray and the positioning baffle, respectively. A pressing nut is threaded onto the top of the valve stem, and the pressing nut is located on the side of the positioning baffle away from the adjusting spring. Under the action of the adjusting spring, the positioning baffle abuts against the pressing nut.

8. The ozone generation system with variable oxygen production function according to claim 7, characterized in that, The other end of the valve stem is also provided with a valve core baffle, a valve core pressure plate and a locking nut. The valve core is located between the valve core pressure plate and the valve core baffle, and the valve core baffle, the valve core and the valve core pressure plate are sequentially fitted onto the valve stem. The valve core baffle has a valve core positioning groove on the side facing the valve core pressure plate, and the valve core is located in the valve core positioning groove. The locking nut is threaded onto the valve stem, and the locking nut is located on the side of the valve core pressure plate away from the valve core.

9. The ozone generation system with variable oxygen production function according to claim 8, characterized in that, A cylinder liner is also fixedly installed inside the valve body. A sealed cavity is formed between the cylinder liner and the valve cover. A piston is fixedly installed on the valve stem. The piston is located inside the sealed cavity, and the piston is adapted to the inner diameter of the cylinder liner and is slidably connected to the cylinder liner by a sealing ring. The cylinder liner is provided with a guide slide hole at one end near the valve core. A guide slide sleeve for limiting the sliding of the valve stem is fixedly installed on the cylinder liner at the position of the guide slide hole. The valve stem passes through the guide slide sleeve.

10. The ozone generation system with variable oxygen production function according to any one of claims 4-9, characterized in that, A pressure tapping pipe is provided between the detection actuator and the downstream pipeline of the valve. One end of the pressure tapping pipe is connected to the air inlet of the detection actuator, and the other end of the pressure tapping pipe is connected to the downstream pipeline of the valve. A condenser is provided on the pressure tapping pipe. Alternatively, a pressure tapping pipe may be provided between the detection actuator and the valve body. One end of the pressure tapping pipe is connected to the air inlet of the detection actuator, and the other end of the pressure tapping pipe is connected to the valve body and communicates with the air outlet of the valve body. A condenser may also be provided on the pressure tapping pipe.

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