Two-stage evaporation pharmaceutical distillation water generator

Abstract

The present application relates to distillation water machine technical field, specifically is a two-stage evaporation's pharmaceutical distillation water machine, including frame, two groups of distillation module and liquid storage module are installed on the frame, the frame is also installed with condensation module, heat conduction module and heat dissipation module, still including mounting plate, two groups of pressure relief pipes are installed on the mounting plate, pressure relief groove is opened in all on the pressure relief pipe, and multiple groups of pressure relief pipes are connected through rectifier tube, the mounting plate is provided with pressure relief piece, the pressure relief piece includes the plunger and elastic piece that are slidably sealed with the pressure relief pipe, the mounting plate is installed with switching piece, through switching piece in the pressure relief piece reset process carries out pressure relief piece rotation, realizes double pressure relief piece redundancy rotation work, promotes the service life of pressure relief piece and equipment operation stability, ensures that two groups of pressure relief piece always keep the state of movement nimble, promotes the safety bottom line ability of equipment, avoids the jam failure caused by the long-term static state of the secondary pressure relief piece.

Description

Technical Field

[0001] This invention relates to the field of distillation water purification technology, specifically a two-stage evaporation pharmaceutical distillation water purification machine. Background Technology

[0002] In the pharmaceutical industry, water for injection and purified water are core process media in the production of pharmaceutical formulations, biological vaccines, and sterile active pharmaceutical ingredients. Water purity directly determines drug quality and medication safety. Distillation is the mainstream water purification process certified by the pharmacopoeia. It removes ionic impurities, microorganisms, and bacterial pyrogens from water through a water-vapor phase change, offering advantages such as thorough purification, high stability, and sterility without pyrogens, making it the preferred choice for most pharmaceutical companies. Two-stage evaporative distillation water purification equipment, with its deep purification through a secondary phase change, high heat exchange efficiency, and stable effluent quality, is widely used in high-end pharmaceutical scenarios such as aseptic pharmaceutical production, biological agents, and medical device cleaning.

[0003] Traditional two-stage evaporation distillation water purification equipment mainly includes core functional structures such as evaporation modules and condensation modules. The evaporation module is generally equipped with two sets of pressure relief pipes, using a main and a secondary combination to form a pressure relief protection structure. When the pressure inside the chamber exceeds the threshold, the user can release pressure by opening the main pressure relief pipe, thereby stabilizing the working pressure of the evaporation chamber, preventing equipment overpressure failure, and ensuring the continuous operation of the two-stage distillation water purification process. When the main pressure relief component fails, pressure is released by opening the secondary pressure relief pipe, thus providing emergency pressure relief protection.

[0004] In existing two-stage evaporation distillation water purification equipment, the primary and secondary pressure relief structures have permanently fixed operating states. Because the primary pressure relief pipe is used extremely frequently, enduring high-frequency opening and closing and high-pressure airflow, its internal springs are prone to fatigue deformation, and the valve core and valve seat sealing surfaces wear and age, frequently resulting in pressure relief accuracy deviations, opening and closing jamming, and sealing failures. Meanwhile, the secondary pressure relief pipe remains idle for extended periods, rarely participating in pressure relief. Prolonged idleness can lead to valve core adhesion, corrosion, jamming, and malfunction, rendering its emergency pressure relief function ineffective. This polarized usage results in extremely poor equipment redundancy protection reliability. If the primary pressure relief pipe suddenly fails and the secondary pressure relief pipe cannot start normally, it can easily cause overpressure and violent pressure fluctuations in the evaporation chamber, leading to fluctuations in water quality, equipment shutdown, and in severe cases, potential equipment damage. Meanwhile, some equipment uses a parallel structure with two sets of pressure relief pipes that open at completely identical pressures. Under overpressure conditions, the two valves are prone to synchronously starting to release pressure, which can easily cause airflow turbulence and valve body frequent jumping resonance, further aggravating valve seat wear, resulting in poor pressure stabilization accuracy and making it unsuitable for the pressure control requirements of high-precision two-stage distillation processes. Summary of the Invention

[0005] The purpose of this invention is to provide a two-stage evaporation pharmaceutical distillation water purifier to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A two-stage evaporation pharmaceutical distillation water purifier includes a frame on which two sets of distillation modules and liquid storage modules are installed. The frame is also equipped with a condensation module, a heat conduction module, and a heat dissipation module. It also includes a mounting plate installed on the distillation module, on which two sets of pressure relief pipes are installed, each of which has a pressure relief groove; and multiple sets of pressure relief pipes are connected through rectifier pipes; The mounting plate is provided with a pressure relief component, which includes a plunger and an elastic element that are slidably and sealingly connected to the pressure relief pipe. The plunger can open or close the pressure relief groove to perform pressure relief or pressure holding actions. The elastic element is used to provide resistance to the movement of the plunger. The initial preload of the two sets of elastic elements is set to be unequal. A switching component is installed on the mounting plate; when the plunger corresponding to one set of pressure relief pipes completes one pressure relief and resets, the switching component can automatically adjust the preload of the two sets of elastic elements, so as to realize the alternating operation of the two sets of pressure relief elements.

[0007] The pharmaceutical distillation water purifier with two-stage evaporation as described above: the output end of the distillation module is connected to the input end of the liquid storage module through a condenser tube; and the output end of one liquid storage module is connected to the input end of one distillation module; a condenser module is installed on the frame; the condenser module is connected to the condenser tube through a heat conduction module, and a heat dissipation module is installed on the condenser module; The pressure relief component includes a fixed frame mounted on the pressure relief pipe, a drive plate on the fixed frame, a sliding column slidably connected to the fixed frame mounted on the drive plate, a return spring sleeved on the sliding column, the two ends of the return spring abutting against the sliding column and the fixed frame respectively, and a lifting rod mounted on the plunger, the lifting rod abutting against the drive plate.

[0008] The pharmaceutical distillation water purifier with two-stage evaporation as described above: the pressure relief component further includes a slot formed on the pressure relief pipe; a resistance wedge is slidably fitted on the plunger; the resistance wedge can fit into the slot; a resistance spring is provided inside the plunger, and the two ends of the resistance spring abut against the plunger and the resistance wedge, respectively.

[0009] As described above, in a two-stage evaporation pharmaceutical distillation water purifier: the side of the resistance wedge closest to the fixed frame is set as an inclined surface; when the plunger moves upward to release pressure, the groove wall squeezes the inclined surface of the resistance wedge, and under the combined action of the mutual squeezing and the elastic force of the resistance spring, the upward movement resistance of the plunger can be increased; at the instant when the resistance wedge completely separates from the groove as the plunger moves upward, the plunger resistance suddenly decreases, and the air pressure can drive the plunger to move upward rapidly.

[0010] The pharmaceutical distillation water purifier with two-stage evaporation as described above: the elastic element includes an adjusting frame that slides and engages with the pressure relief pipe; the lifting rod slides and engages with the adjusting frame; a resistance spring is sleeved on the lifting rod; the two ends of the resistance spring abut against the adjusting frame and the plunger, respectively; and in the initial state, the vertical heights of the two adjusting frames are different, resulting in different initial compression amounts of the multiple sets of resistance springs; the adjusting frame is connected to the switching element.

[0011] The pharmaceutical distillation water purifier with two-stage evaporation as described above: the switching component includes a rotating shaft rotatably mounted on the fixed frame, with rotating plates mounted at both ends of the rotating shaft, and rollers rotatably mounted on the rotating plates. The adjusting frame is provided with straight grooves that roll in cooperation with the rollers.

[0012] As described above, in a two-stage evaporation pharmaceutical distillation water purifier: when the rotating shaft rotates, it can drive one of the rotating plates to rotate upwards and simultaneously drive the other rotating plate to rotate downwards, thereby driving one of the adjusting frames to slide outwards in the pressure relief pipe and the other adjusting frame to slide inwards in the pressure relief pipe, thereby reducing or increasing the initial compression of the resistance spring.

[0013] The pharmaceutical distillation water purifier with two-stage evaporation as described above: the switching component further includes a gear mounted on the rotating shaft, a lifting column mounted on the drive plate, multiple sets of tooth blocks slidably mounted on the lifting column, a relief spring provided inside the lifting column, and the two ends of the relief spring respectively abutting against the tooth blocks and the lifting column; the tooth blocks can mesh with the gear.

[0014] As described above, in a two-stage evaporation pharmaceutical distillation water purifier: the side of the toothed block closest to the drive plate is set as an inclined surface, and its back side is set as a horizontal surface. When the drive plate drives the lifting column to slide upward, the inclined surface of the toothed block engages with the gear to drive the toothed block to slide into the lifting column. During this process, the gear does not rotate. When the drive plate drives the lifting column to slide downward, the horizontal surface of the toothed block can engage with the gear to drive the gear to rotate, thereby causing the adjusting frame to slide upward or downward within the pressure relief pipe.

[0015] As described above, in the two-stage evaporation pharmaceutical distillation water purifier: when the pressure relief component is reset, it can drive the lifting column to move synchronously through the drive plate. During this process, the toothed block can drive the gear to rotate half a revolution, thereby driving multiple sets of the adjusting frame to rotate vertically.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. The raw water undergoes two distillation modules to complete two evaporation and condensation purification processes. Through two-stage phase change, it can effectively remove salt impurities, microorganisms, and bacterial endotoxins from the water, resulting in stable water quality that meets the conductivity index for injection water in the pharmaceutical industry and improves the quality of the output water. 2. By using a switching component to rotate the pressure relief components during the reset process, redundant rotation of the dual pressure relief components is achieved, avoiding problems such as seal failure caused by long-term high-frequency scouring of the pressure relief components, and improving the service life of the pressure relief components and the operational stability of the equipment. 3. By periodically alternating their operation, the two sets of pressure relief components can work alternately, ensuring that both sets of pressure relief components always remain in a flexible state of motion, guaranteeing the true effectiveness of the redundant protection function, and improving the equipment's safety backup capability; this also prevents the auxiliary pressure relief component from becoming stuck and failing due to long-term static placement. Attached Figure Description

[0017] Figure 1 A schematic diagram of a pharmaceutical distillation water purifier with two-stage evaporation. Figure 2 A schematic diagram of the heat conduction module in a two-stage evaporation pharmaceutical distillation water purifier; Figure 3 A schematic diagram of the condenser tube in a two-stage pharmaceutical distillation water purifier; Figure 4 A schematic diagram of the pressure relief pipe in a two-stage pharmaceutical distillation water purifier; Figure 5 A schematic diagram of the plunger structure in a two-stage pharmaceutical distillation water purifier; Figure 6 for Figure 5 Schematic diagram of the structure at point A; Figure 7 A schematic diagram of the resistance-increasing spring in a two-stage pharmaceutical distillation water purifier; Figure 8 A schematic diagram of the adjusting frame in a two-stage evaporation pharmaceutical distillation water purifier; Figure 9 A schematic diagram of the rotating shaft in a two-stage pharmaceutical distillation water purifier; Figure 10 This is a schematic diagram of the toothed block structure in a two-stage pharmaceutical distillation water purifier.

[0018] In the diagram: 1. Frame; 2. Distillation module; 3. Condenser; 4. Condensation module; 5. Thermal conductive module; 6. Heat dissipation module; 7. Liquid storage module; 8. Mounting plate; 9. Pressure relief pipe; 901. Pressure relief groove; 902. Groove opening; 10. Rectifier tube; 11. Plunger; 12. Resistance spring; 13. Resistance wedge; 14. Resistance-increasing spring; 15. Adjusting frame; 1501. Straight groove; 16. Lifting boom; 17. Shaft; 18. Rotating plate; 19. Rollers; 20. Drive board; 2001. Sliding column; 2002. Lifting column; 21. Return spring; 22. Gear; 23. Tooth block; 24. Yield spring; 25. Fixed frame. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Furthermore, elements in this invention are referred to as being "fixed to" or "set on" another element, which may be directly on the other element or may also include an intervening element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or may also include an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0021] Please see Figure 1-10As an embodiment of the present invention, the two-stage evaporation pharmaceutical distillation water purifier includes a frame 1, on which two sets of distillation modules 2 and liquid storage modules 7 are installed. The frame 1 is also equipped with a condensation module 4, a heat conduction module 5 and a heat dissipation module 6. It also includes a mounting plate 8 installed on the distillation module 2, on which two sets of pressure relief pipes 9 are installed, and each pressure relief pipe 9 is provided with a pressure relief groove 901; and multiple sets of pressure relief pipes 9 are connected through a rectifier pipe 10. The mounting plate 8 is provided with a pressure relief component, which includes a plunger 11 that is slidably and sealingly connected to the pressure relief pipe 9 and an elastic element. The plunger 11 can open or close the pressure relief groove 901 to perform pressure relief or pressure holding actions. The elastic element is used to provide resistance to the movement of the plunger 11. The initial preload of the two sets of elastic elements is set to be unequal. A switching component is installed on the mounting plate 8; when the plunger 11 corresponding to one of the pressure relief pipes 9 completes one pressure relief and resets, the switching component can automatically adjust the preload of the two sets of elastic elements, so as to realize the alternating operation of the two sets of pressure relief elements.

[0022] The output end of the distillation module 2 is connected to the input end of the liquid storage module 7 through the condenser tube 3; and the output end of one liquid storage module 7 is connected to the input end of one distillation module 2; a condenser module 4 is installed on the frame 1; the condenser module 4 is connected to the condenser tube 3 through the heat conduction module 5, and a heat dissipation module 6 is installed on the condenser module 4; In this embodiment, raw water is continuously supplied to the input end of distillation module 2, where it is heated and evaporated. The water then flows through condenser pipe 3 to storage module 7. During this flow, the water vapor is re-condensed into liquid water through the cooperation of heat conduction module 5, condensation module 4, and heat dissipation module 6. The re-condensed liquid water then flows to another distillation module 2 for further evaporation and purification. After further condensation through condenser pipe 3, condensation module 4, heat conduction module 5, and heat dissipation module 6, it is condensed back into liquid water and output from the output end of another storage module 7. The raw water undergoes two stages of evaporation and condensation purification through two sets of distillation modules 2, resulting in two phase changes. This effectively removes salt impurities, microorganisms, and bacterial endotoxins from the water, producing stable water that meets the conductivity requirements for injectable water in the pharmaceutical industry, thus improving the quality of the output water.

[0023] The high-temperature steam produced by the distillation module 2 flows from the condenser tube 3 to the liquid storage module 7; the condensation module 4 lowers the temperature of the outer periphery of the condenser tube 3 through the heat conduction module 5. After the high-temperature steam flows into the condenser tube 3, it will quickly cool down and liquefy, thus forming liquefied water that flows into the liquid storage module 7; throughout the process, the heat dissipation module 6 can dissipate heat and cool down the condensation module 4 and the heat conduction module 5 to ensure the condensation effect.

[0024] Mounting plate 8 is installed at the end of distillation module 2 that connects to condenser tube 3. Pressure relief pipe 9 is connected to the inside of distillation module 2 and pressure relief groove 901 is blocked by plunger 11, so that distillation module 2 and rectifier tube 10 are not connected and air in distillation module 2 cannot flow out through pressure relief pipe 9, pressure relief groove 901 and rectifier tube 10.

[0025] During the operation of distillation module 2, its internal pressure will fluctuate with the heating and vaporization rate of the raw water; when the heating power increases and the steam production increases, the internal pressure of distillation module 2 will gradually rise.

[0026] In the initial state, the elastic elements in the two pressure relief pipes 9 have different initial compression amounts. The one with a larger compression amount is the secondary pressure relief element, and the one with a smaller compression amount is the primary pressure relief element.

[0027] Because the initial compression of the two sets of pressure relief components is different, a first pressure relief opening pressure and a second pressure relief opening pressure are formed, with the first pressure relief opening pressure being lower than the second pressure relief opening pressure. During the chamber pressurization process, the medium pressure first reaches the low-pressure threshold (the first pressure relief opening pressure). Only the main pressure relief component plunger 11, which has a smaller preload, has the upward driving force. The second pressure relief opening pressure of the auxiliary pressure relief component is higher, and the medium thrust is insufficient to overcome the upward resistance of the plunger 11, thus maintaining a completely sealed state. Throughout the process, there will be no situation where both plungers 11 simultaneously obtain the opening power, avoiding the basic conditions for the simultaneous activation of both valves.

[0028] When the pressure inside the distillation module 2 exceeds the threshold, the pressure will drive the main pressure relief component to move, thereby pushing the plunger 11 on the main pressure relief component to move over the moving resistance, thereby opening the pressure relief groove 901, so that the gas pressure can flow from the pressure relief groove 901 into the rectifier tube 10, thereby reducing the pressure inside the distillation module 2. During this process, the auxiliary pressure relief component does not move.

[0029] Once the internal pressure drops to a safe level, the pressure relief component resets. During this process, the preload of the elastic elements in the main and auxiliary pressure relief components is changed by the switching component, so that the main pressure relief component becomes the auxiliary pressure relief component, and the auxiliary pressure relief component becomes the main pressure relief component, in preparation for the next pressure relief.

[0030] By switching between high and low preload after a single pressure relief reset, the two pressure relief components alternately undertake the high-frequency working condition of "low-pressure main pressure relief". This makes the wear and other losses of the two pressure relief components relatively equal, and there is no polarization problem of one pressure relief component being excessively worn while the other pressure relief component is idle for a long time. The two pressure relief components age and are repaired at the same time, which extends the overall service life of the entire pressure relief protection assembly.

[0031] By using a switching component to rotate the pressure relief components during the reset process, redundant rotation of the dual pressure relief components is achieved. This avoids problems such as seal failure caused by long-term high-frequency erosion, thus improving the service life of the pressure relief components and the operational stability of the equipment. Through periodic rotation, the two sets of pressure relief components operate alternately, ensuring that both sets of pressure relief components always maintain flexible movement, guaranteeing the true effectiveness of the redundant protection function, and enhancing the equipment's safety backup capability. This also prevents the auxiliary pressure relief component from jamming and failing due to prolonged static placement.

[0032] As a further embodiment of the present invention, the pressure relief component includes a fixed frame 25 mounted on the pressure relief pipe 9, a drive plate 20 disposed on the fixed frame 25, and a sliding column 2001 slidably connected to the fixed frame 25 mounted on the drive plate 20; a return spring 21 is sleeved on the sliding column 2001, and the two ends of the return spring 21 abut against the sliding column 2001 and the fixed frame 25 respectively; a lifting rod 16 is mounted on the plunger 11, and the lifting rod 16 abuts against the drive plate 20.

[0033] In this embodiment, initially, the plunger 11 blocks the pressure relief groove 901. When the pressure inside the distillation module 2 exceeds the threshold, the gas pressure pushes the plunger 11 to slide inward within the pressure relief pipe 9, thereby gradually opening the pressure relief groove 901 so that the rectifier pipe 10 and the distillation module 2 can communicate with each other, and the internal gas pressure can flow into the rectifier pipe 10 to reduce its internal gas pressure, thereby protecting the device and improving its safety.

[0034] During the movement of the plunger 11, the drive plate 20 will move synchronously through the lifting rod 16, so as to drive the slide column 2001 to slide on the fixed frame 25 and compress the return spring 21. During this process, the drive plate 20 will separate from the other lifting rod 16.

[0035] When the pressure inside the distillation module 2 returns to a safe range, the drive plate 20 can be reset by the elastic force of the reset spring 21, which in turn drives the plunger 11 to reset via the lifting rod 16.

[0036] As a further embodiment of the present invention, the pressure relief component further includes a slot 902 formed on the pressure relief pipe 9; a resistance wedge 13 is slidably fitted on the plunger 11; the resistance wedge 13 can be fitted with the slot 902; a resistance spring 12 is provided inside the plunger 11, and the two ends of the resistance spring 12 abut against the plunger 11 and the resistance wedge 13 respectively.

[0037] As a further embodiment of the present invention, the side of the resistance wedge 13 closest to the fixed frame 25 is set as an inclined surface; when the plunger 11 moves upward to perform a pressure relief action, the wall of the slot 902 squeezes the inclined surface of the resistance wedge 13. Under the combined action of the mutual squeezing and the elastic force of the resistance spring 12, the upward movement resistance of the plunger 11 can be increased; at the instant when the resistance wedge 13 completely separates from the slot 902 as the plunger 11 moves upward, the resistance of the plunger 11 suddenly decreases, and the air pressure can push the plunger 11 to move upward rapidly.

[0038] In this embodiment, in the initial state, the resistance wedge 13 is engaged with the slot 902, and under the elastic force of the resistance spring 12, the inclined surface of the resistance wedge 13 and the hole wall of the slot 902 are in close contact with each other.

[0039] When a small pressure fluctuation or slight overpressure occurs inside the distillation module 2, the inclined surface of the pressure resistance wedge block 13 on the wall of the slot 902 forms mechanical damping. Combined with the elastic force of the resistance spring 12, it forms a buffer resistance on the upward movement of the plunger 11, avoiding the problem of the plunger 11 shaking and frequently jumping due to small pressure fluctuations. It also avoids the plunger 11 and the pressure relief pipe 9 being repeatedly eroded and worn by high-speed micro-airflow, effectively protecting the pressure relief sealing structure.

[0040] When the internal pressure of the distillation module 2 continues to rise and reaches the effective pressure relief threshold, the upward thrust of the plunger 11 continues to increase, overcoming the damping resistance and causing the resistance wedge 13 to completely disengage from the slot 902. At this time, the damping constraint is completely released, and the plunger 11 can instantly and quickly open fully, completely connecting the pressure relief slot 901 and rapidly releasing the internal high pressure, ensuring rapid pressure relief response and sufficient pressure relief flow under overpressure conditions. After pressure relief is completed, the plunger 11 returns to its original position, and the resistance wedge 13 falls back with the plunger 11, automatically aligning and re-embedding into the slot 902, restoring the initial damping engagement state. This ensures that each pressure relief action can achieve an adaptive working effect of small-scale pressure stabilization and buffering, and large-scale rapid pressure relief, further improving the stability and accuracy of equipment pressure regulation. Moreover, with the resistance wedge 13 completely disengaged from the slot 902, the plunger 11 can drive the drive plate 20 to move to its maximum stroke, thereby ensuring that subsequent switching components can perform orderly pressure relief rotation.

[0041] As the plunger 11 rapidly rises to the fully open position, the pressure relief groove 901 is fully open, and the high-pressure medium in the evaporation chamber continues to be released outward, causing the chamber pressure to drop steadily. At the same time, the plunger 11 is at its maximum lift position, and the driving force of the medium acting on the effective pressure bearing surface of the plunger 11 will not disappear instantaneously, forming a stable force balance. This avoids the phenomenon of the plunger 11 falling back instantaneously and repeatedly opening and closing due to sudden changes in the pressure relief flow rate, achieving one-time full-open pressure relief and improving the stability of the pressure relief process.

[0042] As a further embodiment of the present invention, the elastic element includes an adjusting frame 15 that is slidably fitted with the pressure relief pipe 9, the lifting rod 16 being slidably fitted with the adjusting frame 15, and a resistance spring 14 being sleeved on the lifting rod 16. The two ends of the resistance spring 14 abut against the adjusting frame 15 and the plunger 11, respectively. In the initial state, the vertical heights of the two adjusting frames 15 are different, resulting in different initial compression amounts of the multiple sets of resistance springs 14. The adjusting frame 15 is connected to the switching element.

[0043] In this embodiment, after the resistance wedge 13 disengages from the slot 902, the moving resistance of the plunger 11 is provided by the reset spring 21 and the resistance-increasing spring 14. The plungers 11 in both pressure relief components abut against the drive plate 20 through the lifting rod 16. Therefore, the difference in the moving resistance of the plungers 11 in the two pressure relief components is related to the elastic force provided by their respective resistance-increasing springs 14. That is, the resistance-increasing spring 14 is mainly the main pressure regulating spring, which determines the pressure relief opening pressure, constructs the pressure difference between the two valves, and controls the pressure relief response threshold. The reset spring 21 is mainly the main return driving spring and does not participate in the pressure relief start-up pressure adjustment. It is responsible for the reliable sealing and return of the plunger 11 after pressure relief, and at the same time provides mechanical transmission power for the preload automatic switching mechanism. One spring controls the pressure relief threshold, and the other spring controls the reset and mechanism drive. The mechanical boundaries do not interfere with each other, which not only ensures the pressure stabilization effect of the pressure difference suppression and the synchronous start-up of the two valves, but also ensures the long-term stable operation of the pressure relief sealing and automatic switching mechanism.

[0044] Relying on the difference in elastic force between the two sets of resistance springs 14, a stable and fixed high and low opening pressure difference can be formed, ensuring that one pressure relief component prioritizes pressure relief while the other pressure relief component is on standby. This provides a precise mechanical basis for the automatic rotation of the two pressure relief components, ensuring the stable and reliable operation of the pressure relief rotation mechanism.

[0045] As a further embodiment of the present invention, the switching component includes a rotating shaft 17 rotatably mounted on the fixed frame 25, with rotating plates 18 mounted at both ends of the rotating shaft 17, and rollers 19 rotatably mounted on the rotating plates 18. The adjusting frame 15 is provided with a straight groove 1501 that rolls with the rollers 19.

[0046] As a further embodiment of the present invention, when the rotating shaft 17 rotates, it can drive one of the rotating plates 18 to rotate upward and at the same time drive another rotating plate 18 to rotate downward, so as to drive one of the adjusting frames 15 to slide outward in the pressure relief pipe 9 and the other adjusting frame 15 to slide inward in the pressure relief pipe 9, thereby reducing or increasing the initial compression of the resistance spring 14.

[0047] In this embodiment, in the initial state, one rotating plate 18 faces upward, and the distance between the adjusting frame 15 connected to it and the plunger 11 is relatively large, so that the compression of the resistance spring 14 is relatively small; the other rotating plate 18 faces downward, and the distance between the adjusting frame 15 connected to it and the plunger 11 is relatively small, so that the compression of the resistance spring 14 is relatively large.

[0048] After a pressure relief component completes its pressure relief work, during the reset process, the rotating shaft 17 can rotate, thereby driving multiple sets of rotating plates 18 to rotate synchronously. During this process, through the rolling and squeezing cooperation of the rollers 19 in the straight groove 1501, one adjusting frame 15 can be driven to move upward, while another adjusting frame 15 moves downward. When the pressure relief component is fully reset, the rotating plate 18 that was originally facing upward faces downward, and the rotating plate 18 that was originally facing downward faces upward. This causes the distance between multiple sets of adjusting frames 15 and plungers 11 to be interchanged, so that the initial compression of the two sets of resistance springs 14 is synchronously interchanged. The main pressure relief component with small compression and low resistance is transformed into the secondary pressure relief component with large compression and high resistance, and the secondary pressure relief component with large compression and high resistance is transformed into the main pressure relief component with small compression and low resistance. This accurately realizes the automatic rotation of the primary and secondary working roles of the two sets of pressure relief components, ensuring that the working valve body can be automatically switched after each pressure relief, realizing the functions of alternating operation and redundant protection, and continuously ensuring the stable pressure and safe operation of the two-stage evaporation water production equipment.

[0049] As a further embodiment of the present invention, the switching component further includes a gear 22 mounted on the rotating shaft 17, a lifting column 2002 mounted on the drive plate 20, a plurality of tooth blocks 23 slidably mounted on the lifting column 2002, and a relief spring 24 disposed inside the lifting column 2002, the two ends of the relief spring 24 respectively abutting against the tooth blocks 23 and the lifting column 2002; the tooth blocks 23 can mesh with the gear 22.

[0050] As a further embodiment of the present invention, the side of the toothed block 23 closest to the drive plate 20 is set as an inclined surface, and its back side is set as a horizontal surface. When the drive plate 20 drives the lifting column 2002 to slide upward, the inclined surface of the toothed block 23 engages with the gear 22 to drive the toothed block 23 to slide into the lifting column 2002. During this process, the gear 22 does not rotate. When the drive plate 20 drives the lifting column 2002 to slide downward, the horizontal surface of the toothed block 23 can engage with the gear 22 to drive the gear 22 to rotate, thereby driving the adjusting frame 15 to slide upward or downward within the pressure relief pipe 9.

[0051] In this embodiment, the rotating shaft 17 has a certain rotational resistance, and a damping washer is provided at the rotational connection between it and the fixed frame 25 to form an interference fit, thereby providing the stable damping torque required for the rotation of the rotating shaft 17. When the pressure relief component is activated, it drives the drive plate 20 to move, thereby compressing the return spring 21. During this process, the lifting column 2002 moves synchronously; and the toothed block 23 moves accordingly during the movement.

[0052] During the upward movement of the lifting column 2002, the inclined surface of the toothed block 23 will cooperate with the gear 22. Through the squeezing action of the inclined surface and the gear 22, the toothed block 23 can be driven to slide into the lifting column 2002 and compress the relief spring 24, so that the toothed block 23 can pass over the gear 22 without driving it to rotate, thereby ensuring stability during the pressure relief process.

[0053] During the reset process, the lifting column 2002 slides downward. During this process, the horizontal surface of the tooth block 23 will mesh with the gear 22. Through the squeezing action of the two, the gear 22 can be driven to rotate, thereby driving the rotating shaft 17 to rotate and completing the alternation of the main and auxiliary pressure relief components.

[0054] As a further embodiment of the present invention, when the pressure relief component is reset, the lifting column 2002 can be moved synchronously by the drive plate 20. During this process, the tooth block 23 can drive the gear 22 to rotate half a revolution, thereby driving multiple sets of the adjustment frame 15 to rotate vertically.

[0055] In this embodiment, after the plunger 11 completes its depressurization and returns to its original position, it drives the lifting rod 16 to move downwards synchronously. The drive plate 20 slides vertically downwards along the fixed frame 25, and the drive plate 20 simultaneously drives the lifting column 2002 downwards. During the downward movement, since the maximum depressurization stroke of the plunger 11 is equal to half the circumference of the pitch circle of the gear 22, the downward displacement of the lifting column 2002 during the reset process is equal to half the circumference of the pitch circle of the gear 22. During this process, the toothed block 23 on the outer side of the lifting column 2002 rigidly abuts against the tooth groove of the gear 22 with a horizontal surface, forming a stable meshing transmission, overcoming the slight resistance inside the equipment, and driving the gear 22 to rotate precisely for a fixed half revolution.

[0056] During the rotation of gear 22, the coaxially fixed rotating shaft 17 is driven to rotate synchronously, providing stable power for the swing of the rotating plates 18 at both ends and the height switching of the two sets of adjusting frames 15. When the plunger 11 moves upward to release pressure and the drive plate 20 moves upward, the inclined surface of the tooth block 23 slides with the tooth tip of gear 22, and the tooth block 23 automatically retracts to make way, so that gear 22 remains stationary and does not rotate. Only one precise half-cycle drive is completed in the downward stroke of pressure release and reset, ensuring that only one preload switching is triggered after each pressure release operation. This ensures that the main and auxiliary switching actions of the two sets of pressure release components are precise, orderly, and cyclical, avoiding the problems of incorrect switching and missed switching, and ensuring the long-term stable operation of the entire mechanical switching mechanism.

[0057] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0058] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A two-stage evaporation pharmaceutical distillation water purifier, comprising a frame, on which two sets of distillation modules and a liquid storage module are mounted, and the frame is further equipped with a condensation module, a heat conduction module, and a heat dissipation module, characterized in that, It also includes a mounting plate installed on the distillation module, on which two sets of pressure relief pipes are installed, each of which has a pressure relief groove; and multiple sets of pressure relief pipes are connected through rectifier pipes; The mounting plate is provided with a pressure relief component, which includes a plunger and an elastic element that are slidably and sealingly connected to the pressure relief pipe. The plunger can open or close the pressure relief groove to perform pressure relief or pressure holding actions. The elastic element is used to provide resistance to the movement of the plunger. The initial preload of the two sets of elastic elements is set to be unequal. A switching component is installed on the mounting plate; when the plunger corresponding to one set of pressure relief pipes completes one pressure relief and resets, the switching component can automatically adjust the preload of the two sets of elastic elements, so as to realize the alternating operation of the two sets of pressure relief elements.

2. The pharmaceutical distillation water purification machine with two-stage evaporation according to claim 1, characterized in that, The output end of the distillation module is connected to the input end of the liquid storage module through a condenser tube; and the output end of one liquid storage module is connected to the input end of one distillation module; a condenser module is installed on the frame; the condenser module is connected to the condenser tube through a heat conduction module, and a heat dissipation module is installed on the condenser module; The pressure relief component includes a fixed frame mounted on the pressure relief pipe, a drive plate on the fixed frame, a sliding column slidably connected to the fixed frame mounted on the drive plate, a return spring sleeved on the sliding column, the two ends of the return spring abutting against the sliding column and the fixed frame respectively, and a lifting rod mounted on the plunger, the lifting rod abutting against the drive plate.

3. The pharmaceutical distillation water purification machine with two-stage evaporation according to claim 2, characterized in that, The pressure relief component also includes a slot formed on the pressure relief pipe; a resistance wedge is slidably fitted on the plunger; the resistance wedge can fit into the slot; a resistance spring is provided inside the plunger, and the two ends of the resistance spring abut against the plunger and the resistance wedge, respectively.

4. A pharmaceutical distillation water purification machine with two-stage evaporation according to claim 3, characterized in that, The side of the resistance wedge closest to the fixed frame is set as an inclined surface. When the plunger moves upward to release pressure, the wall of the slot squeezes the inclined surface of the resistance wedge. Under the combined action of the mutual squeezing and the elastic force of the resistance spring, the upward movement resistance of the plunger can be increased. At the instant when the resistance wedge completely separates from the slot as the plunger moves upward, the plunger resistance suddenly decreases, and the air pressure can drive the plunger to move upward rapidly.

5. A pharmaceutical distillation water purification machine with two-stage evaporation according to claim 2, characterized in that, The elastic element includes an adjusting frame that slides into the pressure relief pipe, a lifting rod that slides into the adjusting frame, a resistance spring sleeved on the lifting rod, and the two ends of the resistance spring abutting against the adjusting frame and the plunger, respectively. In the initial state, the vertical heights of the two adjusting frames are different, resulting in different initial compression amounts of the multiple sets of resistance springs. The adjusting frame is connected to the switching element.

6. A pharmaceutical distillation water purification machine with two-stage evaporation according to claim 5, characterized in that, The switching component includes a rotating shaft rotatably mounted on the fixed frame, with rotating plates mounted at both ends of the rotating shaft, and rollers rotatably mounted on the rotating plates. The adjusting frame has straight grooves that roll in cooperation with the rollers.

7. A pharmaceutical distillation water purification machine with two-stage evaporation according to claim 6, characterized in that, When the shaft rotates, it can drive one of the rotating plates to rotate upward and simultaneously drive the other rotating plate to rotate downward, thereby driving one of the adjusting frames to slide outward in the pressure relief pipe and the other adjusting frame to slide inward in the pressure relief pipe, thereby reducing or increasing the initial compression of the resistance spring.

8. A pharmaceutical distillation water purification machine with two-stage evaporation according to claim 6, characterized in that, The switching component also includes a gear mounted on the rotating shaft, a lifting column mounted on the drive plate, multiple sets of tooth blocks slidably mounted on the lifting column, a relief spring provided inside the lifting column, and the two ends of the relief spring respectively abutting against the tooth blocks and the lifting column; the tooth blocks can mesh with the gear.

9. A pharmaceutical distillation water purification machine with two-stage evaporation according to claim 8, characterized in that, The toothed block has an inclined surface on the side near the drive plate and a horizontal surface on its back. When the drive plate drives the lifting column to slide upward, the inclined surface of the toothed block engages with the gear to drive the toothed block to slide into the lifting column. During this process, the gear does not rotate. When the drive plate drives the lifting column to slide downward, the horizontal surface of the toothed block engages with the gear to drive the gear to rotate, thereby causing the adjusting frame to slide upward or downward within the pressure relief pipe.

10. A pharmaceutical distillation water purification machine with two-stage evaporation according to claim 9, characterized in that, When the pressure relief component is reset, it can drive the lifting column to move synchronously through the drive plate. During this process, the toothed block can drive the gear to rotate half a revolution, thereby driving multiple sets of the adjustment frame to rotate vertically.

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