Drying and wetting paper machine and method for controlling the same

Abstract

The application discloses a dry-wet paper machine and a control method thereof. The dry-wet paper machine comprises a shell, a humidifying mechanism, a conveying and pressing assembly and a detection assembly. The shell comprises a casing and a cover, a storage space is formed in the casing, and the cover is rotatably arranged on the casing and configured to open and close the storage space. The humidifying mechanism comprises a spray head arranged on the casing. The conveying and pressing assembly comprises a driving module, a conveying roller and a pressing component. The conveying roller is rotatably arranged on the casing, and the pressing component is arranged on the cover. The driving module is configured to drive the conveying roller to rotate. The detection assembly comprises an electric control board, a first photoelectric sensor and a second photoelectric sensor. The first photoelectric sensor and the second photoelectric sensor are electrically connected with the electric control board respectively.

Description

Technical Field

[0001] This invention relates to the field of household appliance technology, and in particular to a dry and wet paper machine and its control method. Background Technology

[0002] Paper towels are a common daily necessity, available in both sheet-fed and roll-fed forms. As living standards improve, the demand for humidifying paper towels is increasing, leading to the widespread adoption of corresponding devices. Chinese Patent Publication No. CN 209346855 U discloses a humidification mechanism and paper towel dispenser that humidifies paper towels via water spraying. During the paper towel output process, the system primarily relies on detecting the number of rotations of the conveyor shaft to output a fixed length of paper towel. The output paper towels are cut using a cutter, which cannot utilize the tear lines formed by the paper towels themselves, resulting in a complex overall structure. Furthermore, the limited cutting force of the cutter restricts the cutting of thinner paper towels. Since thicker paper towels provide better humidification, thicker paper towels are unusable, impacting the user experience. Therefore, designing a technology that improves the user experience and simplifies the overall structure is the technical problem this invention aims to solve. Summary of the Invention

[0003] This invention provides a wet and dry paper machine and its control method, which simplifies the overall structure of the wet and dry paper machine and improves the user experience to meet the requirements of using thicker paper towels.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: This invention provides a dry and wet paper machine, comprising: An outer casing, the outer casing including a housing and a cover, the housing forming a storage space and an electrical compartment, the cover being rotatably disposed on the housing and configured to open and close the storage space; A humidification mechanism, the humidification mechanism including a nozzle, the nozzle being disposed on the housing; A conveying and pressing assembly includes a drive module, a conveying roller, and an extrusion component. The conveying roller is rotatably mounted on the housing, and the extrusion component is mounted on the cover. The drive module is configured to drive the conveying roller to rotate. The detection component includes an electronic control board, a first photoelectric sensor, and a second photoelectric sensor, wherein the first photoelectric sensor and the second photoelectric sensor are electrically connected to the electronic control board. When the cover is in the closed state, a conveying channel is formed between the cover and the housing. The nozzle is configured to spray water into the conveying channel, and the extrusion component presses on the conveying roller. Along the conveying direction of the conveying channel, the first photoelectric sensor, the nozzle, and the second photoelectric sensor are arranged in sequence, and the electronic control board is located in the electrical room.

[0005] In one embodiment of this application, the extrusion component is a first pressure roller, which is rotatably disposed on the cover.

[0006] In one embodiment of this application, the extrusion component includes two first pressure rollers arranged side by side.

[0007] In one embodiment of this application, the extrusion component includes a second pressure roller and a pressing member. The second pressure roller is rotatably disposed on the cover, and the pressing member is disposed on the cover and located inside the second pressure roller.

[0008] In one embodiment of this application, the drive module includes a motor, a worm gear, and a worm. The worm is mounted on the shaft of the motor, the worm gear is connected to the worm, and the worm gear is connected to the conveyor roller via a transmission connection.

[0009] In one embodiment of this application, a magnetic induction switch is further included. The magnetic induction switch includes a permanent magnet and a magnetic sensing component. The permanent magnet is disposed on the cover, and the magnetic sensing component is disposed on the housing and electrically connected to the electronic control board. When the cover is in the closed state, the permanent magnet and the magnetic sensing component are arranged opposite to each other.

[0010] In one embodiment of this application, a water tank assembly is further included. The water tank assembly includes a water tank, a tank cover, and a flexible tube. The tank cover is provided with a water outlet and an air inlet. A push-button valve and an air inlet check valve are also provided on the inner surface of the tank cover. The push-button valve is connected to the water outlet, and the air inlet check valve is connected to the air inlet. The push-button valve is configured to open the water outlet when subjected to external pressure. The flexible tube is connected to the water outlet pipe, and the tank cover is detachably disposed on the opening of the water tank. The outer casing is provided with a slot, and a connector is provided in the slot. The humidification mechanism also includes a water pump, a heating channel and an electric heating component. The electric heating component is provided on the heating channel. The connector is connected to the nozzle in sequence through the water pump and the heating channel. After the water tank is inserted into the slot, the connector is inserted into the outlet and the push-button valve is opened.

[0011] In one embodiment of this application, the slot is arranged horizontally, the water tank is inserted horizontally into the slot, and a counterweight is provided at the free end of the flexible tube.

[0012] In one embodiment of this application, the push-button valve includes an installation tube and a glass ball. An annular sealing surface is formed in the installation tube, and the glass ball is configured to have a tendency to move toward the annular sealing surface under the action of water flow. The installation tube is connected to the water outlet and arranged coaxially.

[0013] The present invention also provides a control method for the above-mentioned dry and wet paper machine, wherein the paper towel roll used has tear lines on the paper towel to form several sections of equal length; The control method includes: an initial mode and a working mode; In the initial mode, after the tissue roll is placed into the storage space and the cover is closed, the drive module drives the conveyor roller to rotate in both directions so that the exposed tissue end of the tissue roll moves to the first photoelectric sensor. In working mode, the drive module drives the conveyor roller to rotate forward so that the tissue roll can be unrolled and the tissue can be output. The end of the tissue passes through the first photoelectric sensor, the nozzle and the second photoelectric sensor in sequence. The first photoelectric sensor and the second photoelectric sensor are electrically connected to the electronic control board. After the tissue roll outputs a fixed length of tissue, the conveyor roller stops rotating. After the output tissue segment is torn off, the second photoelectric sensor is exposed and triggers the drive module to drive the conveyor roller to rotate forward and backward until the end of the tissue moves to the first photoelectric sensor.

[0014] In one embodiment of this application, after placing the tissue roll into the storage space and closing the lid, the initial mode specifically includes: If the first photoelectric sensor does not detect the tissue, the drive module drives the conveyor roller to rotate forward so that the tissue roll is unrolled and output until the end of the tissue moves to the first photoelectric sensor. If the first photoelectric sensor detects a tissue but the second photoelectric sensor does not, the drive module drives the conveyor roller to reverse until the end of the tissue exposes the first photoelectric sensor. If both the first and second photoelectric sensors detect paper towels, the drive module will not start.

[0015] The technical solution of the present invention has the following technical advantages over the prior art: By sequentially arranging a first photoelectric sensor, a nozzle, and a second photoelectric sensor in the conveying channel formed between the cover and the shell, and the first and second photoelectric sensors being electrically connected to the electronic control board, the initial position of the end of the tissue roll can be detected by the first photoelectric sensor each time during the tissue roll output process. This allows for the output of a fixed length of tissue roll through the conveying roller even after long-term operation. When using the tissue roll, the user can use the tear line on the tissue roll to pull off the output tissue roll, thereby improving the user experience. The use of the tear line formed by the tissue roll itself to pull off the tissue roll achieves a single fixed-length output without the need for an additional cutter, effectively simplifying the overall structure. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment of the wet and dry paper machine of the present invention; Figure 2 This is an exploded view of an embodiment of the wet and dry paper machine of the present invention; Figure 3 for Figure 2 A magnified view of a portion of region A in the middle; Figure 4 for Figure 2 A magnified view of a portion of region B in the middle; Figure 5 This is a cross-sectional view of an embodiment of the wet and dry paper machine of the present invention; Figure 6 This is a schematic diagram of the water tank assembly in an embodiment of the wet and dry paper machine of the present invention; Figure 7 This is a schematic diagram of the water tank assembly without the water tank in an embodiment of the wet and dry paper machine of the present invention; Figure 8 This is a cross-sectional view of the assembly of the box cover and the push-button valve in an embodiment of the dry and wet paper machine of the present invention; Figure 9 This is a schematic diagram showing the flow path connection between the humidification mechanism and the water tank assembly in an embodiment of the wet and dry paper machine of the present invention.

[0017] Figure label: Outer shell 1, housing 11, cover 12, paper roll 13, slot 14, insertion tube 15, strip mounting hole 121, storage space 100, electrical compartment 200; Humidification mechanism 2, nozzle 21, water pump 22, heating channel 23, electric heating component 24, water flow check valve 25; Conveying and pressing assembly 3, drive module 31, conveying roller 32, extrusion component 33, spring 34; Motor 311, worm gear 312, worm 313; Detection component 4, electronic control board 41, first photoelectric sensor 42, second photoelectric sensor 43; Water tank assembly 5, water tank 51, tank cover 52, flexible tube 53, push-button valve 54, air inlet check valve 55, counterweight 56, mounting groove 57, handle 58; Water outlet 521, air inlet 522, installation pipe 541, glass ball 542, elastic element 543, annular sealing surface 544. Implementation

[0018] Example 1, as Figures 1-5 As shown, the present invention provides a wet and dry paper machine, comprising: The housing 1 includes a housing 11 and a cover 12. A storage space 100 and an electrical compartment 200 are formed in the housing 11. The cover 12 is rotatably disposed on the housing 11 and configured to switch the storage space 100.

[0019] Humidification mechanism 2 includes a nozzle 21, which is mounted on housing 11.

[0020] The conveying and pressing assembly 3 includes a drive module 31, a conveying roller 32, and a pressing component 33. The conveying roller 32 is rotatably mounted on the housing 11, and the pressing component 33 is mounted on the cover 12. The drive module 31 is configured to drive the conveying roller 32 to rotate.

[0021] The detection component 4 includes an electronic control board 41, a first photoelectric sensor 42, and a second photoelectric sensor 43, which are electrically connected to the electronic control board 41.

[0022] When the cover 12 is closed, a conveying channel is formed between the cover 12 and the housing 11. The nozzle 21 is configured to spray water into the conveying channel, and the squeezing component 33 presses on the conveying roller 32. Along the conveying direction of the conveying channel, the first photoelectric sensor 42, the nozzle 21, and the second photoelectric sensor 43 are arranged in sequence.

[0023] In addition, the control board 41 is located in the electrical room 200, and the drive module 31 is also electrically connected to the control board 41 so that the control board 41 can control the drive module 31 to turn on and off.

[0024] Specifically, in actual use, the user places the tissue roll in the storage space 100 and extends one end of the tissue roll downwards around the conveyor roller 32. The conveyor roller 32 is generally located at the top edge of the storage space 100 to ensure that the tissue roll extending downwards along the front surface of the housing 11 can be extended along the conveyor roller 32.

[0025] After the cover 12 is closed, the squeezing component 33 presses the tissue paper onto the conveying roller 32, and the tissue paper is positioned in the conveying channel formed by the front surface of the cover 12 and the housing 11. When the user presses the control button on the cover 12 or the housing 11, the electronic control board 41 receives the signal and controls the drive module 31 to power on and drive the conveying roller 32 to rotate. The rotation of the conveying roller 32 will cause the tissue paper roll to unroll, so that the tissue paper is continuously output. By controlling the number of rotations of the conveying roller 32, a fixed length of tissue paper can be output. Regarding the method of precisely controlling the number of rotations of the conveying roller 32, conventional technologies such as gratings can be used to detect the number of rotations, which will not be limited or elaborated here.

[0026] Because of the tear line on the tissue paper, after the drive module 31 is powered off after outputting a fixed length of tissue paper, the conveyor roller 32 locks and cannot rotate. At this time, the tear line of the fully output single section of tissue paper has bypassed the conveyor roller 32 and is located in the conveying channel. When the user pulls the tissue paper exposed outside the conveying channel, because the tissue paper is pressed between the conveyor roller 32 and the squeezing component 33, there is a certain squeezing force between the conveyor roller 32 and the squeezing component 33, which ensures that the tissue paper and the conveyor roller 32 have a sufficiently large contact area so that the user can break at least one section of tissue paper through the tear line.

[0027] This eliminates the need for an additional cutter to cut the tissues, effectively simplifying the overall structure. Furthermore, thicker tissue rolls can be torn by the user using their own tear lines, and the thicker tissues also offer better absorbency, enhancing the user experience.

[0028] Importantly, to ensure that the length of the tissue paper output remains essentially constant each time, so as to meet the user's requirement of being able to precisely tear the tissue paper along the tear line, the initial position of the tissue paper end is detected by the first photoelectric sensor 42.

[0029] The adjustment process for the initial position of the tissue end is as follows: When the user presses the paper dispense button, the first photoelectric sensor 42 detects whether it can detect the tissue. If the first photoelectric sensor 42 can detect the tissue, it triggers the drive module 31 to drive the conveyor roller 32 to rotate in the reverse direction until the tissue end moves above the first photoelectric sensor 42. Conversely, if the first photoelectric sensor 42 fails to detect the tissue, it controls the drive module 31 to drive the conveyor roller 32 to rotate in the forward direction and move the tissue end to the first photoelectric sensor 42 so that the first photoelectric sensor 42 detects the tissue. Then, it triggers the drive module 31 to stop driving the conveyor roller 32 to rotate.

[0030] Through the above operations, the initial position of the end of the tissue is always located at the first photoelectric sensor 42 each time it is output. Thus, after the conveyor roller 32 rotates a set number of times, a tissue of a fixed length can be output. Furthermore, this effectively solves the problem of excessively long or short output tissues due to accumulated errors from multiple conveying cycles after prolonged use, which negatively impacts the user experience.

[0031] In order to facilitate the installation of tissue rolls, a detachable tissue roll shaft 13 can be placed in the storage space 100 to support the tissue rolls and ensure smooth rotation of the tissue rolls.

[0032] Furthermore, the physical manifestations of the first photoelectric sensor 42 and the second photoelectric sensor 43 can take various forms. The detection area of ​​the first photoelectric sensor 42 is located in the conveying channel. Therefore, the first photoelectric sensor 42 can be a through-beam photoelectric switch, with the transmitting and receiving components of the through-beam photoelectric switch respectively mounted on the housing 11 and the cover 12.

[0033] The detection area of ​​the second photoelectric sensor 43 can be located either inside or outside the conveying channel. When the detection area of ​​the second photoelectric sensor 43 is located inside the conveying channel, it can also be a through-beam photoelectric switch. When the detection area of ​​the second photoelectric sensor 43 is located outside the conveying channel, it can be a reflective photoelectric switch. In this case, the second photoelectric sensor 43 is mounted on the housing, and when the cover 12 is closed, the second photoelectric sensor 43 is not obstructed by the cover 12.

[0034] In addition, an additional photoelectric sensor can be added to control the position of the end of the tissue. First photoelectric sensors 42 can be set at the top and bottom of the nozzle 21 respectively, so that the end of the tissue is located between the two first photoelectric sensors 42 when the tissue is being conveyed.

[0035] In one embodiment, the extrusion member 33 may be manifested as a first pressure roller, which is rotatably mounted on the cover 12.

[0036] Specifically, the paper towels are conveyed by the first pressure roller in conjunction with the conveying roller 32, which ensures smooth paper towel output.

[0037] Preferably, the extrusion component 33 includes two of the first pressure rollers, which are arranged side by side.

[0038] Specifically, by configuring two first pressure rollers to work in conjunction with the conveyor roller 32, when the user pulls the paper towel, the two first pressure rollers can press the paper towel more firmly onto the conveyor roller 32, so as to prevent the paper towel from sliding relative to the conveyor roller 32 when the user pulls it, thus improving the reliability of use.

[0039] The conveying roller 32 is located between the two first pressure rollers. One of the first pressure rollers is located on the outside of the housing 11, and the other first pressure roller is located on the inside of the housing 11.

[0040] Specifically, the conveyor roller 32 is located between the two first pressure rollers, which allows the paper towel to have a larger contact area with the conveyor roller 32. When the paper towel is pulled apart, a greater frictional force is generated between the conveyor roller 32 and the paper towel to prevent the paper towel from sliding relative to the conveyor roller 32.

[0041] In addition, the plane containing the axis of the first pressure roller located outside the housing 11 and the axis of the conveying roller 32 is perpendicular to the paper towel output direction.

[0042] Specifically, the first pressure roller and the conveying roller 32 located on the outside of the housing 11 are arranged side by side so that the plane containing their axes is perpendicular to the output direction of the paper towel. This allows the paper towel to be conveyed vertically downward along the tangent direction of the circumferential surface of the first pressure roller and the conveying roller 32, ensuring that the paper towel can be smoothly output from the conveying channel.

[0043] In addition, in order to ensure that the first pressure roller can apply pressure to the conveying roller 32 evenly to ensure smooth delivery of the paper towel and to meet the requirement that the static friction between the paper towel and the conveying roller 32 can break the tear line, the conveying pressing assembly 3 also includes a spring 34, which is configured to apply a spring force to the first pressure roller in the direction of the conveying roller 32.

[0044] Specifically, a spring 34 applies a spring force to the first pressure roller, enabling the first pressure roller to apply pressure evenly to the conveyor roller 32. The spring 34 is a torsion spring, with one end connected to one of the first pressure rollers and the other end connected to the other first pressure roller.

[0045] To meet the requirements for installing the first pressure roller, two strip-shaped mounting holes 121 are respectively provided on both sides of the cover 12, and the end of the first pressure roller is placed in the strip-shaped mounting hole 121. In addition, for the outer first pressure roller, in order to meet the requirements of the first pressure roller applying uniform pressure to the conveying roller 32 and ensuring smooth paper towel output, the strip-shaped mounting hole 121 on the outer side is arranged horizontally when the cover 12 is closed.

[0046] Specifically, after the cover 12 is closed, the first pressure roller located on the outside presses against the conveying roller 32. The first pressure roller on the outside is moved along the horizontally extended strip mounting hole 121 by the reaction force of the conveying roller 32, so as to ensure that the plane containing the axis of the first pressure roller located on the outside of the housing 11 and the conveying roller 32 is perpendicular to the output direction of the paper towel, thus meeting the requirement of smooth paper towel output.

[0047] In another embodiment, the pressing component 33 may further include a second pressure roller (not shown) and a pressing member (not shown). The second pressure roller is rotatably disposed on the cover, and the pressing member is disposed on the cover and located inside the second pressure roller.

[0048] Specifically, during use, the second pressure roller serves two purposes: firstly, it cooperates with the conveyor roller 32 to transport the paper towel; secondly, when the paper towel is broken, it cooperates with the pressing element to increase the static friction between the paper and the conveyor roller 32. As the conveyor roller 32 rotates to transport the paper towel, the second pressure roller rotates under the influence of the paper towel, and the paper towel slides relative to the pressing element. The pressing element can be a solid form such as a pressure strip or a pressure plate.

[0049] In another embodiment, in order to enable the conveyor roller 32 to self-lock via the drive module 31, the drive module 31 includes a motor 311, a worm gear 312 and a worm 313. The worm 313 is mounted on the shaft of the motor 311, the worm gear 312 is connected to the worm 313, and the worm gear 312 is connected to the conveyor roller 32 in a driving connection.

[0050] Specifically, a worm gear 312 and a worm 313 work together to transmit power to the motor 311. When the motor 311 is powered off, a self-locking mechanism is formed between the worm gear 312 and the worm 313, thereby locking the rotation of the conveyor roller 32. In this way, when the user pulls the tissue, the conveyor roller 32 generates a strong frictional force on the tissue. The worm gear 312 and the conveyor roller 32 can be connected by gears to transmit power; for example, both the worm gear 312 and the conveyor roller 32 can be equipped with gears, and the two gears mesh.

[0051] The combination of a double pressure roller design and a worm gear drive design enables the paper towel to self-lock, allowing users to reliably pull the paper towel apart.

[0052] To further improve the friction coefficient of the conveyor roller 32, a material with a high friction coefficient, such as a rubber layer, can be used to wrap the outside of the roller.

[0053] In another embodiment, the wet and dry paper machine further includes a magnetic induction switch (not shown), which includes a permanent magnet and a magnetic sensing component. The permanent magnet is disposed on the cover 12, and the magnetic sensing component is disposed on the housing 11 and electrically connected to the control board 41. When the cover 12 is closed, the permanent magnet and the magnetic sensing component are arranged opposite to each other.

[0054] Specifically, by adding a magnetic induction switch, the system detects whether the cover 12 is closed. After the cover 12 is fully closed, the permanent magnet is located within the sensing area generated by the magnetic induction component, sending a signal to the electronic control board 41. This allows the electronic control board 41 to perform corresponding operations based on the user's button presses, thereby improving the operational reliability of the equipment. The magnetic induction component can be a Hall switch or a reed switch.

[0055] Example 2, as Figures 1-8 As shown, in order to meet the water supply requirements of the nozzle 21 in the humidification mechanism 2, the wet and dry paper machine in this embodiment also includes a water tank assembly 5. The water tank assembly 5 includes a water tank 51, a tank cover 52, and a flexible tube 53. The tank cover 52 is provided with a water outlet 521 and an air inlet 522. A push-button valve 54 and an air inlet check valve 55 are also provided on the inner surface of the tank cover 52. The push-button valve 54 is connected to the water outlet 521, and the air inlet check valve 55 is connected to the air inlet 522. The push-button valve 54 is configured to open the water outlet 521 when it is squeezed externally. The flexible tube 53 is connected to the water outlet tube, and the tank cover 52 is detachably installed on the opening of the water tank 51. The outer casing 1 is provided with a slot 14, and a connector 15 is provided in the slot 14. The humidification mechanism 2 also includes a water pump 22, a heating channel 23 and an electric heating component 24. The electric heating component is provided on the heating channel. The connector is connected to the nozzle 21 in sequence through the water pump 22 and the heating channel. After the water tank 51 is inserted into the slot 14, the connector is inserted into the outlet 521 and the press valve 54 is opened by squeezing.

[0056] Specifically, during use, the water pump 22 is started to deliver water from the water tank 51 to the nozzle 21, so that the water is formed into a water mist and sprayed out through the nozzle 21.

[0057] The water tank 51 can be laid horizontally or inserted vertically upside down into the slot 14. To maximize the volume of the water tank 51 and make full use of the space inside the outer casing 1, taking the horizontal placement of the water tank 51 in the casing 11 as an example, a push-button valve 54 is additionally configured in the outlet 521. When the water tank is inserted into the slot 14, the horizontally placed water tank 51 is in a closed state because the push-button valve 54 is closed, thus preventing water from being output from the outlet 521 and avoiding leakage from the outlet 521 during disassembly and assembly.

[0058] After the insertion pipe is sealed into the outlet 521, a water seal structure is formed at the connection between the insertion pipe and the outlet 521. As the insertion pipe continues to be inserted into the outlet 521, the insertion pipe abuts against the push-button valve 54, causing the push-button valve 54 to open. In this way, the water in the water tank 51 can be output from the outlet 521 through the flexible pipe 53 under the action of the water pump 22.

[0059] In addition, during the water discharge process, in order to balance the pressure inside the water tank 51, outside air can enter the water tank 51 through the air inlet 522. During the operation of the water pump 22, the pressure inside the water tank 51 forms a negative pressure, which causes the air inlet check valve 55 to open, allowing outside air to enter the water tank 51.

[0060] By setting a water outlet on the tank cover and a push-button valve on the inside of the tank cover, the push-button valve is closed when not pressed by external force, thus closing the water outlet 521 to prevent water leakage when the water tank is installed horizontally. After the water tank is assembled into the wet and dry paper machine, the push-button valve is squeezed, causing the push-button valve to open the water outlet to meet the water output requirements of the water tank under the action of the water pump. In this way, the water tank can be installed horizontally to make full use of the lateral space of the wet and dry paper machine casing to arrange a sufficiently large water tank, increasing the water tank volume, avoiding water leakage during assembly, and improving the reliability of use.

[0061] In another embodiment, since the slot 14 is arranged horizontally, the water tank 51 is inserted horizontally into the slot 14. In order to effectively draw out the water in the water tank 51, a counterweight 56 ​​can be provided at the free end of the flexible tube 53.

[0062] Specifically, when the water tank 51 is placed, the lower end of the flexible tube 53 is lowered onto the side wall at the bottom of the water tank 51 by the counterweight 56. Thus, during use, the water at the bottom of the water tank 51 can be completely and effectively pumped out through the flexible tube.

[0063] In another embodiment, the push-button valve 54 includes an installation tube 541 and a glass ball 542. An annular sealing surface 544 is formed in the installation tube. The glass ball is slidably disposed in the installation tube and is configured to have a tendency to move toward the annular sealing surface under the action of water flow. The installation tube is connected to the water outlet and arranged coaxially.

[0064] Specifically, the glass ball 542 is located in the installation pipe 541 and in the section of the pipe on the annular sealing surface 544 away from the outlet 521, and the glass ball 542 is restricted to sliding within the installation pipe 541. When the water tank 51 is tilted or laid down, causing water in the tank 51 to flow outward through the installation pipe 541, the glass ball 542 will block the outward flow of water within the installation pipe 541. Furthermore, under water pressure, the glass ball 542 slides against the annular sealing surface 544 within the installation pipe 541, thus automatically closing the installation pipe 541. When the water tank 51 is assembled into the slot, the insertion pipe 15 is inserted into the installation pipe 541 and pushes open the glass ball 542, thereby opening the installation pipe 541.

[0065] In some embodiments, to further improve the leak-proof reliability of the water tank 51, the push-button valve 54 also includes an elastic element 543 located in the mounting tube 541, the elastic element 543 being configured to apply a spring force to the glass bulb 542 toward the annular sealing surface 544.

[0066] Specifically, the installation tube 541 is coaxially arranged with the water outlet. After the insertion tube is inserted into the water outlet and sealed with the water outlet, as the water tank 51 continues to be pushed into the slot 14, the insertion tube extends further into the installation tube 541 and abuts against the glass ball 542, so that the glass ball 542 overcomes the elastic force of the elastic element 543 and moves away from the annular sealing surface 544, thereby opening the water outlet.

[0067] In some embodiments, in order to facilitate the disassembly and assembly of the water tank 51, an installation groove 57 is formed at the bottom of the water tank 51, and a handle 58 is also provided in the installation groove, wherein the handle is not exposed in the installation groove.

[0068] Specifically, when it is necessary to disassemble the water tank 51 to replenish water, the user can squeeze the handle to pull the water tank 51 out of the slot 14.

[0069] Example 3: This example also provides a control method for the wet and dry paper machine in the above examples, wherein the paper towel rolls used have tear lines on the paper towels to form several sections of equal length; The control method includes: an initial mode and a working mode; In the initial mode, after the tissue roll is placed into the storage space and the cover is closed, the drive module drives the conveyor roller to rotate in both directions so that the exposed tissue end of the tissue roll moves to the first photoelectric sensor. In working mode, the drive module drives the conveyor roller to rotate forward so that the tissue roll can be unrolled and the tissue can be output. The end of the tissue passes through the first photoelectric sensor, the nozzle and the second photoelectric sensor in sequence. The first photoelectric sensor and the second photoelectric sensor are electrically connected to the electronic control board. After the tissue roll outputs a fixed length of tissue, the conveyor roller stops rotating. After the output tissue segment is torn off, the second photoelectric sensor is exposed and triggers the drive module to drive the conveyor roller to rotate forward and backward until the end of the tissue moves to the first photoelectric sensor.

[0070] Specifically, when the user puts in a tissue and closes the lid, the first photoelectric sensor detects whether there is a tissue. If the first photoelectric sensor detects a tissue, it triggers the drive module 31 to drive the conveyor roller 32 to rotate in the reverse direction until the end of the tissue moves above the first photoelectric sensor 42. Conversely, if the first photoelectric sensor does not detect a tissue, it controls the drive module 31 to drive the conveyor roller 32 to rotate in the forward direction until the first photoelectric sensor 42 detects a tissue.

[0071] Through the above operations, the initial position of the end of the tissue is always located at and adjacent to the first photoelectric sensor 42 each time it is output. In this way, after the conveyor roller 32 rotates a set number of times, a tissue of a fixed length can be output. Furthermore, this effectively solves the problem of excessively long or short output tissues due to accumulated errors caused by multiple conveying cycles after prolonged use, which negatively impacts the user experience.

[0072] Furthermore, after placing the tissue roll into the storage space and closing the lid, the initial mode specifically includes: If the first photoelectric sensor does not detect the tissue, the drive module drives the conveyor roller to rotate forward so that the tissue roll is unrolled and output until the end of the tissue moves to the first photoelectric sensor. If the first photoelectric sensor detects a tissue but the second photoelectric sensor does not, the drive module drives the conveyor roller to reverse until the end of the tissue exposes the first photoelectric sensor. If both the first and second photoelectric sensors detect paper towels, the drive module will not start.

[0073] Specifically, in the initial mode, the length of the tissues pulled out when the user places the tissue roll cannot be uniformly controlled. The conveyor roller 32 can only unroll the tissues and cannot rewind them. Therefore, when the length of the pulled-out tissues is not detected by the second photoelectric sensor, the conveyor roller can reverse, causing a portion of the tissues outside the storage space 100 to return to the storage space 100. At this time, the tissue roll inside the storage space 100 will not rewind. Furthermore, a certain amount of retracted tissues can remain in the storage space 100 outside the tissue roll.

[0074] When the length of the paper towel pulled out is detected by the second photoelectric sensor, it is determined that the length of the paper towel pulled out in the initial state is too long. At this time, the conveyor roller does not rotate to avoid the conveyor roller reversing and causing the returned paper towel to not be completely stored in the storage space 100, which would damage the equipment.

[0075] The following explanation will be based on specific usage scenarios.

[0076] There are three initial states when a user first inserts the tissue roll: State ① The bottom of the tissue is on top of the first photoelectric sensor; State ② The bottom of the tissue is between the first photoelectric sensor and the second photoelectric sensor; State ③ The bottom of the tissue is below the second photoelectric sensor.

[0077] Insert the tissue roll and close the tissue box lid. At this time, the magnetic sensor receives a signal, and the tissue box starts to initialize after 1 second.

[0078] In state ①, the bottom of the tissue is above the first photoelectric sensor. The conveyor roller rotates in the positive direction. When the bottom of the tissue reaches the position of the first photoelectric sensor, the signal value of the first photoelectric sensor changes, the conveyor roller stops rotating, and the end of the tissue reaches the initial position.

[0079] In state ②, the bottom of the tissue is between the first photoelectric sensor and the second photoelectric sensor. The conveyor roller rotates in the opposite direction, and the bottom of the tissue moves to the position of the first photoelectric sensor. The signal value of the first photoelectric sensor changes, the conveyor roller stops rotating, and the end of the tissue reaches the initial position.

[0080] In state ③, the bottom of the tissue is below the second photoelectric sensor. In this state, the conveyor roller does not operate automatically, and the tissue is not initialized. When the user tears off the tissue, if the bottom of the tissue is in state ① or state ②, the tissue is initialized.

[0081] After initialization, the user touches the initialization button on the casing, and the conveyor roller rotates in the forward direction, conveying the tissue 150mm (the length of each tissue section is known to be 150mm, so there is no limit to the length of each tissue section). At this time, the tissue is in state ③ (the first photoelectric sensor and the second photoelectric sensor detect the tissue signal simultaneously). After the user tears off the tissue, the tissue returns to state ① or state ②. After a certain period of time, the tissue initializes and waits for the next cycle.

[0082] After initialization, touching the wet tissue button will cause the conveyor roller to rotate in the forward direction, conveying the tissue 150mm. The corresponding water pump will also start, spraying water to humidify the tissue while it is being conveyed. At this time, the tissue is in state ③ (the first and second photoelectric sensors detect the tissue signal simultaneously). After the user tears off the tissue, the tissue returns to state ① or state ②. After a certain period of time, the tissue will initialize and wait for the next cycle.

[0083] Furthermore, the length of individual tissue sections varies between different manufacturers. To automatically calculate the length of a single tissue section and adjust the number of rotations of the conveyor rollers, the specific process is as follows.

[0084] After initialization, the end of the tissue is positioned at the first photoelectric sensor. When the user triggers the paper feed button, the conveyor roller feeds the tissue according to the default single tissue length L0. After feeding, the user tears off the first tissue. At this point, the end of the next tissue is in state ① or state ② (tissue lengths that are too large or too small than L0 are not considered). After a certain period of time, the tissue is initialized again. If the conveyor roller reverses and travels back △Lmm (the number of rotations of the conveyor roller is calculated by grating counting to determine the corresponding tissue transport distance), and the tissue reaches the initialization position, it means that the length of each tissue section is less than the default length △Lmm. The length of each section of this roll of tissue is calculated to be (L0-△L)mm. Similarly, if the conveyor roller rotates forward △Lmm and the tissue reaches the initialization position, it means that the length of the tissue is greater than the default length △Lmm. Therefore, the length of each tissue section is calculated to be (L0-△L)mm. △L) mm; At this time, the device defaults to the paper output length of this roll of paper towels based on the calculated length of each section of paper towels until the cover is opened, triggering the magnetic sensing component, and then the paper towel length is calculated again.

[0085] In another embodiment, on the N tissue sections at the tail of the tissue roll, the tissue sections are provided with multiple spaced detection holes along the unwinding direction; in the working mode, when the drive module drives the conveyor roller to rotate forward and output a fixed length of tissue, if the first photoelectric sensor is triggered and an intermittent signal change occurs, it will remind you to replace the tissue roll.

[0086] Specifically, as the tissue roll is used, the number of tissues remaining in the roll decreases. By designing perforations on the N tissue sections at the end, multiple spaced detection holes are arranged along the unrolling direction. When the tissue roll reaches the end, the detection holes intermittently pass through the first photoelectric sensor and are detected, triggering the electronic control board to initiate a reminder operation, such as an alarm, so that the user can replace the tissue roll in time.

[0087] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A dry and wet paper machine, characterized in that, include: An outer casing, the outer casing including a housing and a cover, the housing forming a storage space and an electrical compartment, the cover being rotatably disposed on the housing and configured to open and close the storage space; A humidification mechanism, the humidification mechanism including a nozzle, the nozzle being disposed on the housing; A conveying and pressing assembly includes a drive module, a conveying roller, and an extrusion component. The conveying roller is rotatably mounted on the housing, and the extrusion component is mounted on the cover. The drive module is configured to drive the conveying roller to rotate. The detection component includes an electronic control board, a first photoelectric sensor, and a second photoelectric sensor, wherein the first photoelectric sensor and the second photoelectric sensor are electrically connected to the electronic control board. In the closed state, a conveying channel is formed between the cover and the housing. The nozzle is configured to spray water into the conveying channel, and the extrusion component presses against the conveying roller. Along the conveying direction of the conveying channel, the first photoelectric sensor, the nozzle, and the second photoelectric sensor are arranged in sequence, and the electronic control board is located in the electrical compartment. The drive module includes a motor, a worm gear, and a worm. The worm is mounted on the motor shaft, the worm gear is connected to the worm, and the worm gear is connected to the conveyor roller. A self-locking mechanism is formed between the worm gear and the worm to lock the conveyor roller from rotating. The electronic control board is configured such that, in the initial execution mode, after the tissue roll is placed into the storage space and the cover is closed, the drive module drives the conveyor roller to rotate in both directions so that the exposed tissue end of the tissue roll moves to the first photoelectric sensor. The electronic control board is configured such that, in the operating mode, the drive module drives the conveyor roller to rotate forward so that the tissue roll unrolls and outputs tissues. The end of the tissue passes sequentially through a first photoelectric sensor, a nozzle, and a second photoelectric sensor. The first and second photoelectric sensors are electrically connected to the electronic control board. After the tissue roll outputs a fixed length of tissue, the conveyor roller stops rotating. After the output tissue segment is torn off, the second photoelectric sensor is exposed and triggers the drive module to drive the conveyor roller to rotate in both forward and reverse directions until the end of the tissue moves to the first photoelectric sensor.

2. The dry and wet paper machine according to claim 1, characterized in that, The extrusion component is a first pressure roller, which is rotatably mounted on the cover.

3. The dry and wet paper machine according to claim 2, characterized in that, The extrusion component includes two first pressure rollers, which are arranged side by side.

4. The dry and wet paper machine according to claim 1, characterized in that, The extrusion component includes a second pressure roller and a pressing element. The second pressure roller is rotatably disposed on the cover, and the pressing element is disposed on the cover and located inside the second pressure roller.

5. The dry and wet paper machine according to claim 1, characterized in that, It also includes a magnetic induction switch, which includes a permanent magnet and a magnetic sensing component. The permanent magnet is disposed on the cover, and the magnetic sensing component is disposed on the housing and electrically connected to the electronic control board. When the cover is closed, the permanent magnet and the magnetic sensing component are arranged opposite to each other.

6. The dry and wet paper machine according to any one of claims 1-5, characterized in that, It also includes a water tank assembly, which comprises a water tank, a tank cover, and a flexible tube. The tank cover is provided with a water outlet and an air inlet. The inner surface of the tank cover is also provided with a push-button valve and an air inlet check valve. The push-button valve is connected to the water outlet, and the air inlet check valve is connected to the air inlet. The push-button valve is configured to open the water outlet when subjected to external pressure. The flexible tube is connected to the water outlet pipe, and the tank cover is detachably mounted on the opening of the water tank. The outer casing is provided with a slot, and a connector is provided in the slot. The humidification mechanism also includes a water pump, a heating channel and an electric heating component. The electric heating component is provided on the heating channel. The connector is connected to the nozzle in sequence through the water pump and the heating channel. After the water tank is inserted into the slot, the connector is inserted into the outlet and the push-button valve is opened.

7. The dry and wet paper machine according to claim 6, characterized in that, The push-button valve includes an installation tube and a glass ball. An annular sealing surface is formed in the installation tube. The glass ball is slidably disposed in the installation tube and is configured to have a tendency to move toward the annular sealing surface under the action of water flow. The installation tube is connected to the water outlet and arranged coaxially.

8. The dry and wet paper machine according to claim 1, characterized in that, After placing the tissue roll into the storage space and closing the lid, the initial mode includes: If the first photoelectric sensor does not detect the tissue, the drive module drives the conveyor roller to rotate forward so that the tissue roll is unrolled and output until the end of the tissue moves to the first photoelectric sensor. If the first photoelectric sensor detects a tissue but the second photoelectric sensor does not, the drive module drives the conveyor roller to reverse until the end of the tissue exposes the first photoelectric sensor. If both the first and second photoelectric sensors detect paper towels, the drive module will not start.

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