A modular multi-effect water distiller with adjustable number of evaporators

Abstract

The present invention relates to the technical field of distilled water machines, and discloses a modular multi-effect distilled water machine with adjustable number of evaporators, including a distilled water unit, the distilled water unit including a condenser, a preheater and at least three groups of evaporators, one of which is a standby group of evaporators, a raw water pipeline is connected between the preheater and the three groups of evaporators respectively, a steam pipeline and a liquid phase pipeline are connected between every two groups of evaporators, a pure steam pipeline is connected between each group of evaporators and the condenser, a distilled water pipeline is also provided on the condenser, and a liquid spraying mechanism for spraying cleaning liquid is provided in the evaporator. The modular multi-effect distilled water machine with adjustable number of evaporators can smoothly switch to the standby evaporator to continue production by setting two groups of evaporators as common use and one group of evaporators as standby, and realizes independent cleaning of the evaporator to be cleaned. This operation does not require shutdown, which significantly improves production efficiency and reduces losses caused by production interruptions.

Description

Technical Field

[0001] The invention relates to the technical field of distilled water machines, and in particular to a modular multi-effect distilled water machine with adjustable evaporator quantity. Background Art

[0002] With the increasing demand for high-purity water in the industrial field, distilled water machines have been widely used as important equipment for producing distilled water. Traditional multi-effect evaporator distilled water machines are usually composed of multiple evaporators in series, and the raw water is heated by the steam supplied by the evaporator diversion. In this process, the steam transfers heat to continuously heat the raw water and eventually convert it into distilled water, and the remaining condensed water is discharged.

[0003] The existing publication number CN117185391A discloses a new type of high-efficiency multi-effect distilled water machine and its modular design method, which include multiple fixed frames, each of which has at least two evaporator bodies slidably installed inside, each of which has at least two evaporation tubes fixedly installed inside, each of which has at least two evaporation tubes fixedly installed inside, two reinforcing plates fixedly installed inside each evaporator body located outside the evaporation tubes, a collar fixedly installed outside each evaporator body, a connecting tube provided at the side end of each collar, and two support plates fixedly installed inside each fixed frame.

[0004] Although the above technical solution can adjust the spacing between multiple evaporator bodies by moving the evaporator bodies, and has the advantage of adjusting the number of evaporator bodies according to the peripheral heat source conditions under different use environments, in the prior art, during the use of the multiple-effect evaporator, minerals and other impurities in the raw water are easily precipitated under high temperature conditions, resulting in the gradual formation of scale in the evaporator. The accumulation of scale will not only reduce the heat transfer efficiency, but also affect the quality of distilled water, while increasing the operating burden and maintenance cost of the equipment. When cleaning the evaporator from scale, the prior art usually requires shutting down and disassembling the equipment for manual cleaning. This process is not only time-consuming, but also significantly increases the production downtime, resulting in losses. Therefore, a modular multiple-effect distilled water machine with adjustable number of evaporators is needed to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a modular multi-effect distilled water machine with adjustable number of evaporators, so as to solve the problem raised in the above background technology that when cleaning the scale of the evaporator, it is usually necessary to shut down and disassemble the equipment for manual cleaning.

[0006] The present invention provides a modular multi-effect distilled water machine with adjustable number of evaporators, which adopts the following technical solution:

[0007] A modular multi-effect distilled water machine with adjustable number of evaporators, comprising a distilled water unit, the distilled water unit comprising a condenser, a preheater and at least three groups of evaporators, one group of evaporators being a standby, a steam inlet being provided on the evaporator, the condenser being connected with the preheater, the preheater being connected with the three groups of evaporators respectively with raw water pipelines, every two groups of evaporators being connected with a steam pipeline and a liquid phase pipeline, each group of evaporators being connected with a pure steam pipeline with the condenser, a distilled water pipeline being further provided on the condenser, wherein electromagnetic valves are provided on the steam inlet, the raw water pipeline, the steam pipeline, the liquid phase pipeline and the pure steam pipeline;

[0008] The evaporator is provided with a liquid spraying mechanism for spraying cleaning liquid;

[0009] The liquid spraying mechanism includes a liquid storage tank arranged in the evaporator, a liquid storage cavity opened in the liquid storage tank, a connecting rod fixedly connected to the liquid storage tank, a channel opened in the connecting rod, a through hole opened on the liquid storage tank and a nozzle arranged in a circular distribution on the liquid storage tank, the channel and the through hole are interconnected, the channel is used for an external water pipe to transport cleaning liquid to the liquid storage cavity, and the cleaning liquid is sprayed out through the nozzle, and the evaporator is provided with a wastewater discharge port for sewage discharge.

[0010] Furthermore, a connecting cylinder is fixed at the bottom end of the evaporator, and the bottom end of the connecting rod movably passes through the evaporator until it enters the connecting cylinder, and a driving mechanism is provided;

[0011] The driving mechanism includes a spline shaft fixed to the bottom end of the connecting rod, a connecting plate rotatably mounted on the connecting rod, a screw threadedly connected to the connecting plate, an inner ring fixed outside the screw, a first gear arranged outside the inner ring, a second gear meshing with the first gear, a third gear meshing with the second gear, and a motor arranged in a connecting cylinder, the output end shaft of the motor is fixed to the third gear, the spline shaft and the second gear are connected by a spline, and the screw and the second gear are both rotatably arranged in the connecting cylinder.

[0012] Furthermore, the connecting rod is also provided with a cleaning mechanism for cleaning the inner wall of the evaporator, the cleaning mechanism comprising a collar fixedly sleeved on the outside of the connecting rod, a vertical plate arranged on the side of the connecting rod, a telescopic component rotatably arranged between the collar and the vertical plate, and a limiting component for expanding the vertical plate;

[0013] Among them, a limiting block is fixed in the evaporator, and grooves and through grooves are opened in the limiting block from top to bottom in sequence. The grooves and through grooves are interconnected, and a limiting ring is installed in the through groove through a bracket, and the limiting ring is used to extrude the telescopic component.

[0014] Furthermore, a silicone scraper is fixed to a side of the vertical plate away from the connecting rod, and the silicone scraper is in contact with the inner wall of the evaporator.

[0015] Furthermore, the telescopic component includes a sleeve rotatably connected to the ring via a first rotating shaft and an insertion rod telescopically connected to the sleeve, the insertion rod is rotatably connected to the vertical plate via a second rotating shaft, and torsion springs are provided at both ends of the first rotating shaft.

[0016] Furthermore, the limiting component includes a cross frame fixed on the connecting rod, a guide groove provided in the cross frame, and a guide block slidably arranged in the guide groove, and the guide block is fixedly connected to the vertical plate.

[0017] Furthermore, a buffer mechanism is provided between the inner ring and the first gear, and the buffer mechanism includes a plurality of groups of slots opened along the outer circumference of the inner ring, conical protrusions arranged in the slots, and springs arranged between the slots and the conical protrusions. The inner wall of the first gear is provided with matching grooves whose number is the same as the conical protrusions and which correspond one to one.

[0018] Furthermore, the spline shaft is provided with a liquid inlet hole which is interconnected with the channel.

[0019] Furthermore, a hollow hole is provided at the bottom end of the connecting cylinder for the spline shaft to move up and down.

[0020] Furthermore, the bottom end of the through groove is a tapered opening.

[0021] Beneficial effects of the present invention:

[0022] 1. By setting two groups of evaporators as common use and one group of evaporators as standby, in the initial state, the solenoid valves on the steam pipeline and liquid pipeline between the first group of common evaporators and the second group of common evaporators are in the open state, thereby ensuring that the two groups of evaporators can jointly participate in the evaporation process of water. When it is necessary to clean any group of common evaporators, the solenoid valves on the steam pipeline and liquid pipeline corresponding to the group can be closed through the control device, and then the solenoid valves on the steam pipeline and liquid pipeline corresponding to the standby evaporator are opened. In this way, it is possible to smoothly switch to the standby evaporator for continued production, and at the same time realize independent cleaning of the evaporator to be cleaned. This operation does not require shutdown, which significantly improves production efficiency, reduces losses caused by production interruptions, and improves the convenience of equipment maintenance.

[0023] 2. By providing a liquid spraying mechanism, when the liquid storage tank is above the limit block, it can provide circulation space for raw water and steam, avoiding the normal operation of the evaporator being affected by the cleaning equipment, and optimizing the use space of the equipment. After the liquid storage tank is fitted with the limit block, the cleaning liquid can be sprayed more accurately to the lower half of the inner wall of the evaporator, effectively covering the area that needs to be cleaned and improving the cleaning effect. When the liquid storage tank rotates, the cleaning liquid can be evenly distributed to the inner wall of the evaporator, improving the comprehensiveness of the cleaning.

[0024] 3. By setting up a cleaning mechanism, the vertical plate and the silicone scraper can be used to physically scrape off the scale, and combined with the chemical action of the cleaning liquid, it can more effectively remove stubborn scale and ensure the cleanliness of the inner wall of the evaporator. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0026] Figure 2 It is a front view structural schematic diagram of the present invention;

[0027] Figure 3 It is a schematic diagram of the three-dimensional structure of the evaporator of the present invention;

[0028] Figure 4 It is a schematic cross-sectional view of the three-dimensional structure of the evaporator of the present invention;

[0029] Figure 5 For the present invention Figure 4 A schematic diagram of the front view of the structure section at the middle spray mechanism and the cleaning mechanism;

[0030] Figure 6 It is a three-dimensional schematic diagram of the liquid storage tank, connecting rod, collar, vertical plate, telescopic component and limiting component of the present invention;

[0031] Figure 7 For the present invention Figure 7 Schematic diagram of the three-dimensional structure at the middle telescopic component;

[0032] Figure 8 It is an exploded schematic diagram of the three-dimensional structure of the vertical plate and the horizontal frame of the present invention;

[0033] Fig. 9 It is a schematic cross-sectional view of the three-dimensional structure of the limiting block and the limiting ring of the present invention;

[0034] Fig.10 For the present invention Figure 4 A schematic diagram of the structure enlargement in the middle;

[0035] Fig.11 It is a three-dimensional structural schematic diagram of the connecting rod and the driving mechanism of the present invention;

[0036] Fig.12 It is a schematic diagram of a top view of the structure section of the inner ring, the first gear and the buffer mechanism of the present invention;

[0037] Fig.13 It is a schematic exploded view of the three-dimensional structure of the inner ring, the first gear, the conical protrusion and the spring of the present invention.

[0038] In the figure:

[0039] 1. Distilled water unit; 11. Condenser; 12. Preheater; 13. Evaporator; 131. Wastewater outlet; 132. Connecting tube; 133. Hole; 14. Steam inlet; 15. Raw water pipeline; 16. Steam pipeline; 17. Liquid pipeline; 18. Pure steam pipeline; 19. Distilled water pipeline; 2. Liquid spraying mechanism; 21. Liquid storage tank; 211. Liquid storage chamber; 22. Connecting rod; 23. Channel; 24. Through hole; 25. Spray head; 26. Stopper; 261. Groove; 262. Through groove; 27. Stopper ring; 3. Cleaning mechanism; 31. Sleeve Ring; 32, vertical plate; 321, silicone scraper; 33, telescopic component; 331, first rotating shaft; 332, sleeve; 333, plug rod; 334, second rotating shaft; 335, torsion spring; 34, limiting component; 341, cross frame; 342, guide groove; 343, guide block; 4, driving mechanism; 41, spline shaft; 42, connecting plate; 43, screw; 44, inner ring; 45, first gear; 46, second gear; 47, third gear; 48, motor; 5, buffer mechanism; 51, slot; 52, conical protrusion; 53, spring; 54, matching groove. DETAILED DESCRIPTION

[0040] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0041] Reference Figure 1-Figure 2 A modular multi-effect distilled water machine with adjustable number of evaporators comprises a distilled water machine unit 1, wherein the distilled water machine unit 1 comprises a condenser 11, a preheater 12 and at least three groups of evaporators 13, wherein one group of evaporators 13 is standby and the other two groups of evaporators 13 are commonly used, a steam inlet 14 is provided on the evaporator 13, the condenser 11 is connected with the preheater 12, a raw water pipeline 15 is respectively connected between the preheater 12 and the three groups of evaporators 13, a steam pipeline 16 and a liquid phase pipeline 17 are connected between every two groups of evaporators 13, a pure steam pipeline 18 is connected between each group of evaporators 13 and the condenser 11, a distilled water pipeline 19 is also provided on the condenser 11, wherein the steam inlet 14, the raw water pipeline 15, the steam pipeline 16, the liquid phase pipeline 17, the pure steam pipeline 18 and the distilled water pipeline 19 are all provided with solenoid valves, and the multi-effect distilled water machine is also externally connected with a control device, and the control device and the solenoid valve are electrically connected.

[0042] The condenser 11 is provided with a raw water inlet and a raw water outlet. The raw water enters the condenser 11 from the raw water inlet. The raw water outlet of the condenser 11 is connected to the preheater 12 through a water inlet pipeline. The preheater 12 is connected to the first group of common evaporators 13, the second group of common evaporators 13 and the standby evaporator 13 through a raw water pipeline 15. When the evaporator 13 is needed, the solenoid valve on the corresponding raw water pipeline 15 is opened to allow the raw water to enter the evaporator 13 to be used. The first group of common evaporators 13 are connected to the second group of common evaporators 13 and the standby evaporator 13 through steam pipelines 16 and The second group of common evaporators 13 and the standby evaporator 13 are also connected through the steam pipeline 16 and the liquid pipeline 17. In the initial state, the solenoid valves on the steam pipeline 16 and the liquid pipeline 17 connected between the first group of common evaporators 13 and the second group of common evaporators 13 are in the open state. When it is necessary to clean one group of common evaporators 13, the corresponding solenoid valves on the steam pipeline 16 and the liquid pipeline 17 can be closed, and then the solenoid valves on the steam pipeline 16 and the liquid pipeline 17 corresponding to the standby evaporator 13 can be opened, thereby realizing the function of cleaning the evaporator 13 separately without stopping the machine;

[0043] Industrial steam is introduced into the steam inlet 14 to heat and evaporate the preheated raw water. After generating secondary steam, the steam enters the corresponding evaporator 13 through the steam pipeline 16 in sequence. The three groups of evaporators 13 are respectively connected to the condenser 11 through the pure steam pipeline 18. The pure steam entering the condenser 11 is condensed to form distilled water and discharged from the outlet of the distilled water pipeline 19.

[0044] Reference Figure 3-Figure 5 , a liquid spraying mechanism 2 for spraying cleaning liquid is provided in the evaporator 13;

[0045] Specifically, the liquid spraying mechanism 2 includes a liquid storage tank 21 disposed in the evaporator 13, a liquid storage cavity 211 provided in the liquid storage tank 21, a connecting rod 22 fixedly connected to the liquid storage tank 21, a channel 23 provided in the connecting rod 22, a through hole 24 provided on the liquid storage tank 21, and nozzles 25 circumferentially distributed on the liquid storage tank 21;

[0046] Among them, the channel 23 and the through hole 24 are interconnected, the nozzle 25 is connected with the liquid storage chamber 211, the channel 23 is used for conveying cleaning liquid to the liquid storage chamber 211 through an external water pipe, and the cleaning liquid is sprayed out through the nozzle 25. The evaporator 13 is provided with a wastewater discharge port 131 for sewage discharge, and the wastewater discharge port 131 is also provided with a solenoid valve. The cleaning liquid is conveyed to the liquid storage chamber 211 through the channel 23 through an external water pipe pump, and then the cleaning liquid in the liquid storage chamber 211 is sprayed into the evaporator 13 through the nozzle 25, so that the scale on the inner wall of the evaporator 13 can be effectively dissolved, reducing the frequency and workload of manual cleaning, and the accumulation of scale will reduce the heat conduction efficiency, resulting in reduced heating efficiency. After cleaning, the thermal efficiency of the equipment can be restored, thereby saving energy consumption.

[0047] Among them, refer to Figure 9-10 A limit block 26 is fixed in the evaporator 13, and a groove 261 and a through groove 262 are sequentially opened in the limit block 26 from top to bottom. The groove 261 and the through groove 262 are interconnected. The bottom end diameter of the liquid storage tank 21 is consistent with the inner diameter of the groove 261. When the liquid storage tank 21 moves downward, the bottom of the liquid storage tank 21 can contact the groove 261. The bottom end of the through groove 262 is a conical opening. When the cleaning liquid is sprayed out through the nozzle 25, the through groove 262 can guide the cleaning liquid so that the cleaning liquid flows toward the inner wall of the evaporator 13.

[0048] Reference Figure 4 and Fig.11 A connecting tube 132 is fixed to the bottom end of the evaporator 13, and the bottom end of the connecting rod 22 is movable through the evaporator 13 to the connecting tube 132, and a driving mechanism 4 is provided, and the driving mechanism 4 is used to control the movement and rotation of the connecting rod 22;

[0049] Specifically, the driving mechanism 4 includes a spline shaft 41 fixed to the bottom end of the connecting rod 22, a connecting plate 42 rotatably mounted on the connecting rod 22, a screw 43 threadedly connected to the connecting plate 42, an inner ring 44 fixed to the outside of the screw 43, a first gear 45 arranged outside the inner ring 44, a second gear 46 meshing with the first gear 45, a third gear 47 meshing with the second gear 46, and a motor 48 arranged in the connecting tube 132, the output end shaft of the motor 48 is fixed to the third gear 47, the spline shaft 41 and the second gear 46 are connected by a spline, and the screw 43 and the second gear 46 are both rotatably arranged in the connecting tube 132.

[0050] The bottom end of the connecting tube 132 is provided with an empty hole 133 for the spline shaft 41 to move up and down, and the spline shaft 41 can pass through the empty hole 133 when moving up and down.

[0051] The spline shaft 41 is provided with a liquid inlet hole which is interconnected with the channel 23. After the spline shaft 41 passes through the empty hole 133, it can be connected to an external water pipe and a water pump to input cleaning liquid through the liquid inlet hole, and the cleaning liquid enters the liquid storage chamber 211 through the liquid inlet hole, the channel 23 and the through hole 24 in sequence.

[0052] During use, first, the third gear 47 is controlled to rotate by starting the motor 48, and the second gear 46 and the first gear 45 are meshed through the engagement of the third gear 47, the second gear 46 and the first gear 45, and the inner ring 44 and the screw 43 are driven to rotate together during the rotation of the first gear 45. At this time, the connecting plate 42 can drive the connecting plate 42 to move downward along the rotation of the screw 43. Since the spline shaft 41 and the second gear 46 are connected by a spline, when the connecting plate 42 moves downward, the connecting rod 22 and the spline shaft 41 can be controlled to move downward at the same time, so that the connecting rod 22 drives the liquid storage tank 21 to move downward and contact with the groove 261. At the same time, due to the rotation of the second gear 46 and the rotational connection between the connecting rod 22 and the connecting plate 42, the connecting rod 22 and the spline shaft 41 can be rotated while moving downward, so that the connecting rod 22 drives the liquid storage tank 21 to rotate;

[0053] Secondly, the cleaning liquid is input through the liquid inlet hole through an external water pipe and a water pump, and the cleaning liquid passes through the liquid inlet hole, the channel 23 and the through hole 24 in turn into the liquid storage chamber 211. After the cleaning liquid passes through the liquid storage chamber 211, it is sprayed out through the nozzle 25. At this time, the cleaning liquid sprayed by the nozzle 25 flows toward the inner wall of the evaporator 13 along the guidance of the through groove 262, and with the rotation of the connecting rod 22 and the liquid storage tank 21, the cleaning liquid can be evenly distributed to the inner wall of the evaporator 13.

[0054] It should be noted that, refer to Figure 12-13 A buffer mechanism 5 is provided between the inner ring 44 and the first gear 45. The buffer mechanism 5 includes a plurality of slots 51 provided along the outer periphery of the inner ring 44, a conical protrusion 52 provided in the slots 51, and a spring 53 provided between the slots 51 and the conical protrusion 52. The inner wall of the first gear 45 is provided with matching slots 54, the same number as the conical protrusions 52 and corresponding one to one;

[0055] During the rotation of the first gear 45, the first gear 45 starts to rotate driven by the motor 48. The rotation of the first gear 45 causes the inner ring 44 to start to rotate. The inner ring 44 is fixed to the screw 43. The rotation of the inner ring 44 drives the screw 43 to rotate, thereby causing the connecting plate 42 to move downward accordingly. As the connecting plate 42 moves downward, when it reaches the preset lowest point, the connecting plate 42 stops descending. At this time, the first gear 45 is still continuing to rotate. Due to the presence of the conical protrusion 52 and the spring 53, a certain relative movement can still be maintained between the inner ring 44 and the first gear 45. The conical protrusion 52 can be appropriately adjusted through its retractability when the first gear 45 continues to rotate. This allows the first gear 45 to continue to rotate without being restricted even when the connecting plate 42 is at the bottom. The rotation of the first gear 45 is transmitted to the inner ring 44 with minimal friction through the conical protrusion 52, which can reduce the friction between the contact surfaces and reduce wear.

[0056] In the present invention, when the liquid storage tank 21 is above the limit block 26, it can provide circulation space for raw water and steam, avoid affecting the normal operation of the evaporator 13 due to the cleaning equipment, and optimize the use space of the equipment. After the liquid storage tank 21 is fitted with the limit block 26, the cleaning liquid can be sprayed more accurately to the lower half of the inner wall of the evaporator 13, effectively covering the area that needs to be cleaned, improving the cleaning effect, and controlling the rotation of the connecting rod 22 so that the liquid storage tank 21 can evenly distribute the cleaning liquid to the inner wall of the evaporator 13, thereby improving the comprehensiveness of cleaning. Among them, the automatic downward movement and rotation mechanism makes the cleaning process faster and more efficient, reduces the cleaning time and manual intervention, and the downward movement and rotation design makes the spraying range wider, which can more effectively cover every corner of the inner wall of the evaporator and improve the comprehensiveness of cleaning.

[0057] Further, see Figure 4-Figure 6 The connecting rod 22 is also provided with a cleaning mechanism 3 for cleaning the inner wall of the evaporator 13;

[0058] Specifically, the cleaning mechanism 3 includes a collar 31 fixedly sleeved on the outside of the connecting rod 22, a vertical plate 32 arranged on the side of the connecting rod 22, a telescopic component 33 rotatably arranged between the collar 31 and the vertical plate 32, and a limiting component 34 for expanding the vertical plate 32.

[0059] Among them, refer to Figure 7 The telescopic component 33 includes a sleeve 332 rotatably connected to the ring 31 through a first rotating shaft 331 and an insertion rod 333 telescopically connected to the sleeve 332. The inner wall of the sleeve 332 is provided with a cavity, and the insertion rod 333 is movably inserted in the cavity. One end of the insertion rod 333 away from the sleeve 332 is rotatably connected to the vertical plate 32 through a second rotating shaft 334. Both ends of the first rotating shaft 331 are provided with torsion springs 335, and the two ends of the torsion spring 335 respectively abut the ring 31 and the sleeve 332.

[0060] Reference Figure 8 The limiting component 34 includes a horizontal frame 341 fixed on the connecting rod 22, a guide groove 342 opened in the horizontal frame 341, and a guide block 343 slidably arranged in the guide groove 342. The guide block 343 is fixedly connected to the end of the vertical plate 32 away from the ring 31. When the sleeve 332 rotates around the first rotating shaft 331, the insertion rod 333 can perform telescopic movement in the sleeve 332. At the same time, the limiting cooperation of the guide groove 342 and the guide block 343 can make the vertical plate 32 move in the horizontal direction, so that the vertical plate 32 can be translated and unfolded to fit the inner wall of the evaporator 13.

[0061] A silicone scraper 321 is fixed to the side of the vertical plate 32 away from the connecting rod 22. The silicone scraper 321 fits the inner wall of the evaporator 13. The silicone scraper 321 is made of soft material and is not easy to scratch the inner wall, so it can effectively protect the evaporator 13 from damage. At the same time, the silicone scraper 321 fits the inner wall of the evaporator 13 and can physically scrape off scale. Combined with the chemical action of the cleaning liquid, it can more effectively remove stubborn scale and ensure the cleanliness of the inner wall of the evaporator 13.

[0062] It is worth noting that, referring to Figure 9-10 When the locking cam 332 is in the unlock state, the locking cam 333 is in the unlock state, and the locking cam 333 is locked.

[0063] During use, when the liquid storage tank 21 moves downward with the connecting rod 22, the sleeve 31, the vertical plate 32, the telescopic component 33 and the limiting component 34 move downward with the connecting rod 22 as a whole. At this time, the sleeve 332 is separated from the contact with the limiting ring 27. Under the control of the torsion force of the torsion spring 335, the sleeve 332 and the insertion rod 333 are turned over and stretched, thereby controlling the vertical plate 32 to move toward the inner wall of the evaporator 13. At the same time, when the vertical plate 32 moves toward the inner wall of the evaporator 13, the guide block 343 can slide in the guide groove 342, so that the silicone scraper 321 fits the inner wall of the evaporator 13;

[0064] When the connecting rod 22 rotates, the vertical plate 32 is controlled to drive the silicone scraper 321 to rotate on the inner wall of the evaporator 13 to remove the scale on the inner wall of the evaporator 13. The nozzle 25 sprays the cleaning liquid and the silicone scraper 321 works synchronously, which can complete the cleaning in one step, saving time and manpower and improving the overall cleaning efficiency.

[0065] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A modular multi-effect distilled water machine with adjustable number of evaporators, comprising a distilled water machine unit (1), characterized in that: The distilled water unit (1) comprises a condenser (11), a preheater (12) and at least three groups of evaporators (13), one of which is a standby group of evaporators (13). A steam inlet (14) is provided on the evaporator (13). The condenser (11) is connected to the preheater (12). A raw water pipeline (15) is respectively connected between the preheater (12) and the three groups of evaporators (13). A steam pipeline (16) and a liquid phase pipeline (17) are connected between every two groups of evaporators (13). A pure steam pipeline (18) is connected between each group of evaporators (13) and the condenser (11). A distilled water pipeline (19) is also provided on the condenser (11). Solenoid valves are provided on the steam inlet (14), the raw water pipeline (15), the steam pipeline (16), the liquid phase pipeline (17) and the pure steam pipeline (18). The evaporator (13) is provided with a liquid spraying mechanism (2) for spraying cleaning liquid; The liquid spraying mechanism (2) comprises a liquid storage tank (21) disposed in the evaporator (13), a liquid storage cavity (211) provided in the liquid storage tank (21), a connecting rod (22) fixedly connected to the liquid storage tank (21), a channel (23) provided in the connecting rod (22), a through hole (24) provided on the liquid storage tank (21), and a spray head (25) provided in a circumferential distribution on the liquid storage tank (21), wherein the channel (23) and the through hole (24) are interconnected, the channel (23) is used to connect an external water pipe to transport cleaning liquid into the liquid storage cavity (211), and the cleaning liquid is sprayed out through the spray head (25), and the evaporator (13) is provided with a wastewater discharge port (131) for discharging sewage; A connecting tube (132) is fixed at the bottom end of the evaporator (13); the bottom end of the connecting rod (22) movably passes through the evaporator (13) until it enters the connecting tube (132), and is provided with a driving mechanism (4); The driving mechanism (4) comprises a spline shaft (41) fixed to the bottom end of the connecting rod (22), a connecting plate (42) rotatably sleeved on the connecting rod (22), a screw rod (43) threadedly connected to the connecting plate (42), an inner ring (44) fixed outside the screw rod (43), a first gear (45) arranged outside the inner ring (44), a second gear (46) meshing with the first gear (45), a third gear (47) meshing with the second gear (46), and a motor (48) arranged in the connecting cylinder (132), wherein the output end shaft of the motor (48) is fixed to the third gear (47), the spline shaft (41) and the second gear (46) are connected via a spline, and the screw rod (43) and the second gear (46) are both rotatably arranged in the connecting cylinder (132); The connecting rod (22) is also provided with a cleaning mechanism (3) for cleaning the inner wall of the evaporator (13), the cleaning mechanism (3) comprising a collar (31) fixedly sleeved on the outside of the connecting rod (22), a vertical plate (32) provided on the side of the connecting rod (22), a telescopic component (33) rotatably provided between the collar (31) and the vertical plate (32), and a limiting component (34) for expanding the vertical plate (32), a silicone scraper (321) being fixed on a side of the vertical plate (32) away from the connecting rod (22), the silicone scraper (321) being in contact with the inner wall of the evaporator (13); Wherein, a limit block (26) is fixed in the evaporator (13), a groove (261) and a through groove (262) are sequentially provided in the limit block (26) from top to bottom, the groove (261) and the through groove (262) are interconnected, a limit ring (27) is installed in the through groove (262) via a bracket, and the limit ring (27) is used to squeeze the telescopic component (33); The telescopic component (33) comprises a sleeve (332) rotatably connected to the sleeve ring (31) via a first rotating shaft (331) and an insertion rod (333) telescopically connected to the sleeve (332); the insertion rod (333) is rotatably connected to the vertical plate (32) via a second rotating shaft (334); and torsion springs (335) are provided at both ends of the first rotating shaft (331); The limiting component (34) comprises a cross frame (341) fixed on the connecting rod (22), a guide groove (342) provided in the cross frame (341), and a guide block (343) slidably arranged in the guide groove (342); the guide block (343) is fixedly connected to the vertical plate (32).

2. The modular multi-effect distilled water machine with adjustable evaporator quantity according to claim 1, characterized in that: A buffer mechanism (5) is provided between the inner ring (44) and the first gear (45), the buffer mechanism (5) comprising a plurality of groups of slots (51) provided along the outer circumference of the inner ring (44), conical protrusions (52) provided in the slots (51), and springs (53) provided between the slots (51) and the conical protrusions (52), and the inner wall of the first gear (45) is provided with matching slots (54) the same number as the conical protrusions (52) and corresponding one to one.

3. The modular multi-effect distilled water machine with adjustable evaporator quantity according to claim 1, characterized in that: The spline shaft (41) is provided with a liquid inlet hole which is interpenetrating with the channel (23).

4. The modular multi-effect distilled water machine with adjustable evaporator quantity according to claim 1, characterized in that: The bottom end of the connecting cylinder (132) is provided with an empty hole (133) for the spline shaft (41) to move up and down.

5. The modular multi-effect distilled water machine with adjustable evaporator quantity according to claim 1, characterized in that: The bottom end of the through groove (262) is a conical opening.

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