Drying system and drying apparatus comprising same

Abstract

Provided are a drying system and a drying apparatus comprising same, relating to the technical field of clothes treatment apparatuses. The drying system comprises a drying air duct, a rinsing mechanism, a first filtering device, and a second filtering device located downstream of the first filtering device. The drying air duct is provided with a first insertion port (411), a part of the second filtering device passes through the first insertion port (411) to extend into the drying air duct, and the rinsing mechanism can spray water towards the first filtering device. By providing the first filtering device upstream of the second filtering device, most of lint pieces in the drying air duct are filtered by the first filtering device, and only a small portion of the lint pieces are filtered by the second filtering device, facilitating the reduction of the number of times a user cleans the second filtering device, thereby improving the user experience. Moreover, the first filtering device can be rinsed by the rinsing mechanism, and does not require cleaning by users. Additionally, by providing two filtering devices, the filtering effect is better, and the drying efficiency can also be improved.

Description

Drying system and drying equipment including the drying system Technical Field

[0001] This invention relates to the field of clothing processing equipment technology, specifically providing a drying system and drying equipment including the drying system. Background Technology

[0002] Drying equipment refers to machines that use hot air to dry clothes. Drying equipment mainly includes washer-dryer combos, dryers, or tumble dryers.

[0003] Taking washer-dryer combos as an example, most existing washer-dryer combos on the market use electric heating or heat pump heating. Regardless of the heating method chosen, the dryer still relies on a circulating airflow during the drying process. During drying, lint from the clothes will detach and be carried by the fan, adhering to the entire airflow duct. To avoid this, many washer-dryer combos choose to install a filter device inside the drying airflow duct to filter out lint. Furthermore, for easy cleaning of lint, the filter device is generally installed in a plug-in manner within the drying airflow duct.

[0004] However, the filters in existing drying equipment require frequent cleaning by users, which seriously affects the user experience.

[0005] Therefore, a new technical solution is needed in this field to solve the above problems. Summary of the Invention

[0006] The present invention aims to solve the above-mentioned technical problems, namely, to solve the problem that the filter device of the existing drying equipment requires frequent cleaning by the user, resulting in a poor user experience.

[0007] In a first aspect, the present invention provides a drying system comprising a drying duct, a rinsing mechanism, a first filter device, and a second filter device located downstream of the first filter device. The first filter device is disposed within the drying duct, and the drying duct is provided with a first insertion port. A portion of the second filter device extends into the drying duct through the first insertion port. The rinsing mechanism is capable of spraying water toward the first filter device to rinse it.

[0008] In the preferred embodiment of the above drying system, the first filtration device includes a first filter frame and a first filter installed on the first filter frame, wherein the first filter is inclined from bottom to top along the flow direction of the airflow.

[0009] In the preferred embodiment of the above drying system, the rinsing mechanism includes a rinsing chamber and a water spray nozzle disposed on the top of the first filter screen frame. The water spray nozzle is connected to the rinsing chamber and is positioned towards the first filter screen.

[0010] In the preferred embodiment of the above drying system, the rinsing chamber extends along the length of the first filter screen, and the number of water spray nozzles is multiple and they are distributed at intervals along the length of the rinsing chamber.

[0011] In the preferred embodiment of the above drying system, the second filtration device includes a pull-out bracket, a second filter frame, and a second filter installed on the second filter frame. One end of the pull-out bracket along its length is detachably and fixedly connected to one end of the second filter frame along its length. The second filter frame and the second filter extend into the drying duct through the first insertion interface.

[0012] In the preferred embodiment of the above drying system, the second filter screen frame is provided with a lint receiving cavity, which is located upstream of the second filter screen and is capable of accommodating lint intercepted by the second filter screen.

[0013] In the preferred embodiment of the above drying system, the second filter frame is provided with a door panel at the inlet position of the lint receiving cavity. The door panel is pivotally connected to the second filter frame, and the door panel has an opening that allows airflow to pass through. The size of the opening is smaller than the size of the inlet.

[0014] In the preferred embodiment of the above drying system, the door panel is provided with strip ribs, which extend from one end of the opening to the other end of the opening.

[0015] In the preferred embodiment of the above-mentioned drying system, the second filter device further includes a locking pin installed on the pull-out bracket. The locking pin is provided with a first locking structure, and the second filter frame is provided with a second locking structure. When the locking pin is in the locked position, the first locking structure and the second locking structure cooperate to lock the second filter frame to the pull-out bracket. When the locking pin is in the unlocked position, the first locking structure and the second locking structure separate, so that the second filter frame can be removed from the pull-out bracket.

[0016] In a second aspect, the present invention also provides a drying apparatus, including the drying system described above.

[0017] When the above technical solution is adopted, the drying system of the present invention sets a first filter device upstream of the second filter device. Most of the lint in the drying air duct is filtered by the first filter device, and only a small part of the lint is filtered by the second filter device. This helps to reduce the number of times the user cleans the second filter device, improves the user experience, and the first filter device can be washed by the rinsing mechanism, so there is no need for the user to clean it. In addition, by setting two filter devices, the filtration effect is better, which also helps to improve the drying efficiency.

[0018] Furthermore, by tilting the first filter screen, the present invention can increase the filtration area of ​​the first filter screen, thereby further improving the filtration effect and drying efficiency.

[0019] Furthermore, by setting the rinsing mechanism as a rinsing chamber and a spray nozzle formed on the top of the first filter frame, the present invention can reduce the space occupied by the rinsing mechanism, facilitate its arrangement, and also reduce the number of parts, which is beneficial to improving assembly efficiency.

[0020] Furthermore, by providing a pull-out bracket that is detachably and fixedly connected to the second filter frame, the present invention requires less lateral space when disassembling the second filter device, making disassembly more convenient and facilitating the arrangement of drying equipment.

[0021] Furthermore, the present invention collects the filtered lint by setting a lint-receiving cavity on the second filter frame. When the filter and the second filter frame are pulled out of the drying duct, the lint is easily discharged with the second filter frame, which helps to prevent the lint from being trapped in the drying duct. This allows all the filtered lint to be discharged with the second filter frame, thereby further reducing the number of times the user needs to clean the filter and improving the user experience.

[0022] Furthermore, the present invention provides a door panel at the inlet of the lint receiving cavity. The door panel prevents the lint in the lint receiving cavity from falling out of the cavity. The door panel is pivotally connected to the second filter frame, which facilitates the cleaning of the lint in the lint receiving cavity.

[0023] Furthermore, by providing strip ribs at the opening of the door panel, the present invention can press the wire shavings onto the wire shavings, which helps to further prevent the wire shavings in the wire shavings receiving cavity from falling out of the wire shavings receiving cavity.

[0024] Furthermore, the present invention connects the pull-out bracket and the second filter frame with a locking pin, which facilitates the quick disassembly and installation of the pull-out bracket and the second filter frame, thereby further improving the user experience. Attached Figure Description

[0025] The preferred embodiments of the present invention will now be described with reference to the accompanying drawings of the washer-dryer combo, in which:

[0026] Figure 1 is a structural schematic diagram of the washer-dryer combo of the present invention;

[0027] Figure 2 is a schematic diagram of the assembly of the drying system and the drying cylinder of the present invention;

[0028] Figure 3 is a schematic diagram of the structure of the first drying air duct and the second filter device of the present invention;

[0029] Figure 4 is a schematic diagram of the structure of the first drying air duct, the first filter device, and the second filter device of the present invention.

[0030] Figure 5 is a schematic diagram of the structure of the first filtration device of the present invention;

[0031] Figure 6 is a schematic diagram of the structure of the first filtration device of the present invention;

[0032] Figure 7 is a schematic diagram of the structure of the filter assembly of the second filter device of the present invention.

[0033] Figure 8 is a schematic diagram of the structure of the second filter frame and locking pin of the present invention;

[0034] Figure 9 is a schematic diagram of the locking pin structure of the second filter device of the present invention.

[0035] List of reference numerals in the attached diagram:

[0036] 1. Housing; 11. Second insertion interface;

[0037] 2. Drying drum; 21. Exhaust vent; 22. Loading / unloading port;

[0038] 31. Pull-out bracket; 32. Second filter screen holder; 33. Outer shell; 34. Locking pin; 341. First locking structure; 321. Wire debris receiving cavity; 322. Second locking structure; 323. Door panel; 3231. Opening;

[0039] 41. First drying air duct; 42. Second drying air duct; 411. First insertion interface;

[0040] 5. Fan;

[0041] 61. First filter screen frame; 62. First filter screen; 611. Flushing chamber; 612. Water spray nozzle; 613. Water inlet connector. Detailed Implementation

[0042] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the invention and are not intended to limit the scope of protection of the invention. For example, although the embodiments described below are in conjunction with a washer-dryer combo, the technical solutions of the present invention are equally applicable to other drying equipment with drying functions, such as dryers and garment care machines.

[0043] It should be noted that in the description of this invention, terms such as "upper," "lower," "left," "right," "top," "bottom," "front," and "rear," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0044] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "set," "connect," and "install" should be interpreted broadly, for example, referring to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0045] Specifically, as shown in Figures 1 and 2, the washer-dryer combo of this application includes a housing 1, a drying drum 2 installed inside the housing 1, and a drying system. The drying system can blow hot air onto the drying drum 2. The drying drum 2 is the outer drum of the washer-dryer combo, and a rotatable inner drum is provided inside the outer drum. The inner drum is used to hold clothes.

[0046] For example, as shown in Figure 2, the drying drum 2 is horizontally arranged. The front end of the drying drum 2 is a loading and unloading port 22 for loading and unloading clothes. An exhaust port 21 is provided near the rear end of the drying drum 2. The exhaust port 21 is connected to the air inlet of the drying system. The air outlet of the drying system extends to the loading and unloading port 22 of the drying drum 2. During the drying process, the humid air in the drying drum 2 enters the drying system through the exhaust port 21. After being condensed and heated by the drying system, it re-enters the drying drum 2 through the loading and unloading port 22 to dry the clothes in the drying drum 2.

[0047] Preferably, as shown in Figures 3 and 4, the drying system of the present invention includes a drying air duct and a first filter device, the first filter device being disposed within the drying air duct. The first filter device is used to filter the airflow within the drying air duct, intercepting impurities such as lint carried by the airflow.

[0048] Preferably, as shown in FIG4, the first filtration device includes a first filter frame 61 and a first filter 62 mounted on the first filter frame 61, wherein the first filter 62 is inclined from bottom to top along the flow direction of the airflow.

[0049] In the prior art, filters are generally set vertically, resulting in a small filtration area. This application increases the filtration area of ​​the first filter 62 by setting it at an angle, thereby improving the filtration effect and thus improving the drying efficiency.

[0050] For example, the first filter holder 61 is also tilted along with the first filter 62.

[0051] It should be noted that the present invention does not limit the tilt angle of the first filter 62. For example, the tilt angle of the first filter 62 can be set to 10 degrees, 30 degrees, or 50 degrees, etc. Preferably, the tilt angle of the first filter 62 is set to 15 degrees to 30 degrees.

[0052] Preferably, as shown in Figures 4 to 6, the drying system of the present invention further includes a rinsing mechanism, which is capable of spraying water toward the first filter device to rinse the first filter device.

[0053] When there is a lot of lint on the first filter screen 62, water is supplied to the rinsing mechanism. The rinsing mechanism sprays water onto the first filter screen 62 to wash away the lint, thus rinsing the first filter screen 62. The washed-off lint can flow back to the drying cylinder 2 along the drying air duct, or a drainage structure can be set in the drying air duct to discharge the washed-off lint through the drainage structure.

[0054] It should be noted that, in practical applications, those skilled in the art can set the rinsing mechanism on the drying air duct, or on the first filter screen frame 61, or even set the rinsing mechanism as an independent water spray component (such as a water spray pipe), etc. Such flexible adjustments and changes do not deviate from the principles and scope of the present invention and should all be limited to the protection scope of the present invention.

[0055] Preferably, as shown in Figures 5 and 6, the rinsing mechanism of the present invention includes a rinsing chamber 611 and a water spray nozzle 612 disposed on the top of the first filter screen frame 61. The water spray nozzle 612 communicates with the rinsing chamber 611 and is disposed toward the first filter screen 62.

[0056] For example, the first filter screen frame 61 is also provided with a water inlet connector 613. One end of the water inlet connector 613 is connected to a water source (such as a faucet or water tank) through a water inlet pipe, and the other end of the water inlet connector 613 is connected to a rinsing chamber 611. When the first filter screen 62 needs to be cleaned, water is supplied to the rinsing chamber 611 through the water source. The water in the rinsing chamber 611 is sprayed onto the first filter screen 62 through a spray nozzle 612 to rinse the lint on the first filter screen 62.

[0057] Preferably, as shown in Figures 5 and 6, the rinsing chamber 611 extends along the length of the first filter screen 62, and the number of water spray nozzles 612 is multiple and they are distributed at intervals along the length of the rinsing chamber 611.

[0058] Preferably, as shown in Figures 1 to 4, the drying system of the present invention further includes a second filter device, and a first insertion interface 411 is provided on the drying air duct, and a part of the second filter device extends into the drying air duct through the first insertion interface 411.

[0059] The second filter is located downstream of the first filter. The second filter is used to perform secondary filtration on the airflow in the drying duct to intercept impurities such as lint carried by the airflow. The second filter is connected to the drying duct by plugging it in. When the second filter needs to be cleaned, it can be pulled out of the drying duct and then inserted back into the drying duct through the first plug-in interface 411. The operation is very convenient.

[0060] Preferably, as shown in FIG1, the housing 1 of the washer-dryer of the present invention is provided with a second plug-in interface 11 at a position corresponding to the first plug-in interface 411, the extension direction of the second filter device is parallel to the axial direction of the drying drum 2 of the washer-dryer, and the second filter device extends to the second plug-in interface 11.

[0061] For example, the second insertion interface 11 is provided on the front panel of the housing 1, and when the second filter needs to be cleaned, the user can directly pull out the second filter from the front panel.

[0062] Preferably, as shown in Figures 1 to 4, the drying air duct of the present invention includes a first drying air duct 41 and a second drying air duct 42. The two ends of the first drying air duct 41 are respectively connected to the exhaust port 21 on the drying cylinder 2 and the air inlet of the fan 5 of the drying system. The air outlet of the fan 5 is connected to one end of the second drying air duct 42. The other end of the second drying air duct 42 extends toward the take-up and put-out port 22 of the drying cylinder 2. A first insertion interface 411 is provided in the first drying air duct 41, and a first filter device is installed in the first drying air duct 41.

[0063] For example, as shown in Figures 1 and 2, the first drying air duct 41 and the second drying air duct 42 are both located above the drying cylinder 2 and are arranged horizontally. The extension direction of the first drying air duct 41 is perpendicular to the axial direction of the drying cylinder 2, and the extension direction of the second drying air duct 42 is parallel to the axial direction of the drying cylinder 2. That is, the first drying air duct 41 and the second drying air duct 42 are arranged intersecting each other, and the angle between them is 90°. In this way, the space occupied by the drying air ducts is smaller and the layout is more optimized.

[0064] Preferably, as shown in Figures 1 to 4, the second filtration device of this application includes a housing 33 and a filter assembly mounted on the housing 33, the filter assembly being movable relative to the housing 33 along the length direction of the housing 33.

[0065] The outer casing 33 is fixedly installed between the drying duct and the housing 1. Specifically, the outer casing 33 is fixedly installed between the first drying duct 41 and the housing 1. Both ends of the outer casing 33 are connected to the first insertion port 411 on the first drying duct 41 and the second insertion port 11 on the housing 1, respectively. A portion of the filter assembly extends through the first insertion port 411 into the drying duct, specifically into the first drying duct 41. The filter assembly extends to the second insertion port 11 of the housing 1. When cleaning the second filter device is required, only the filter assembly needs to be pulled out; there is no need to disassemble the outer casing 33 of the second filter device. Furthermore, the extending direction of the outer casing 33 and the filter assembly is preferably parallel to the axial direction of the drying cylinder 2.

[0066] It should be noted that the housing 33 is not mandatory, and those skilled in the art can omit the housing 33 in practical applications according to the actual situation.

[0067] Preferably, as shown in Figures 4 and 7, the filter assembly of the present invention includes a pull-out bracket 31, a second filter frame 32 mounted on the pull-out bracket 31, and a second filter (not shown) mounted on the second filter frame 32.

[0068] The pull-out bracket 31 is mounted on the outer shell 33 and can move relative to the outer shell 33 along the length direction of the outer shell 33. The pull-out bracket 31 and the second filter frame 32 are distributed along the length direction of the outer shell 33. The extension directions of the pull-out bracket 31 and the second filter frame 32 are parallel to the axis direction of the drying drum 2 of the washer-dryer. The pull-out bracket 31 extends to the second insertion interface 11 of the housing 1. The second filter frame 32 and the second filter pass through the first insertion interface 411 and extend into the drying air duct. Specifically, the second filter frame 32 and the second filter pass through the first insertion interface 411 and extend into the first drying air duct 41.

[0069] It should be noted that, in practical applications, those skilled in the art can either allow the second filter frame 32 to extend entirely into the first drying duct 41, or only allow the portion of the second filter frame 32 with the filter screen installed to extend into the first drying duct 41, etc. Such flexible adjustments and changes do not deviate from the principles and scope of the present invention and should all be limited to the protection scope of the present invention. Of course, the present invention preferably allows only a portion of the second filter frame 32 to extend into the first drying duct 41.

[0070] In addition, it should be noted that the pull-out bracket 31 is not necessary, and those skilled in the art can omit the pull-out bracket 31 in practical applications according to specific circumstances.

[0071] Preferably, as shown in Figures 7 to 9, the second filter frame 32 of the present invention is detachably and fixedly connected to the pull-out bracket 31.

[0072] When the second filter needs to be cleaned, first pull out the pull-out bracket 31 from the housing 1. After the outer end of the second filter frame 32 moves to the outside of the housing 1 with the pull-out bracket 31, separate the pull-out bracket 31 from the second filter frame 32, and then continue to pull the second filter frame 32 until the second filter is pulled out. In this way, less lateral space is required when disassembling the second filter device, disassembly is more convenient, and it is easier to arrange the washer-dryer combo.

[0073] For example, as shown in FIG7, the left end of the pull-out bracket 31 along its length direction is detachably and fixedly connected to the right end of the second filter frame 32 along its length direction.

[0074] Preferably, the mesh number of the first filter 62 is smaller than that of the second filter.

[0075] In this process, the airflow in the first drying duct 41 first flows through the first filter 62 and then through the second filter. The mesh size of the first filter 62 is smaller than that of the second filter. For example, the mesh size of the first filter 62 can be set between 40 and 80, and the mesh size of the second filter can be set between 80 and 160.

[0076] Preferably, as shown in Figures 7 and 8, the second filter frame 32 of the present invention is provided with a lint receiving cavity 321, which is located upstream of the second filter and can accommodate lint intercepted by the second filter.

[0077] By providing a lint-collecting cavity 321 on the second filter frame 32 to collect filtered lint, the lint can be easily removed along with the second filter frame 32 when the second filter and the second filter frame 32 are pulled out of the drying duct. This helps prevent lint from being trapped in the drying duct. If lint is trapped in the drying duct, it will adhere to the second filter during the next drying cycle, requiring frequent filter cleaning and severely impacting the user experience. This is especially true when drying wool garments, which produce a large amount of lint. Without the lint-collecting cavity 321, the second filter needs to be cleaned after each drying cycle. If the second filter is not cleaned, a large amount of wool lint will accumulate in the drying duct. When cleaning the second filter, most of the wool lint will be blocked in the drying duct. With the lint-collecting cavity 321, the service life of the second filter can be greatly extended, reducing the number of times the user needs to clean the filter and significantly improving the user experience.

[0078] Preferably, the depth of the wire debris receiving cavity 321 is 5 to 15 mm.

[0079] For example, those skilled in the art can set the depth of the wire chip receiving cavity 321 to 5mm, 7mm, 9mm, 10mm, 12mm, 14mm or 15mm, and more preferably to 10mm.

[0080] The depth of the lint receiving cavity 321 refers to the dimension along the thickness direction of the second filter frame 32, or it can be understood as the dimension along the flow direction of the airflow.

[0081] Preferably, as shown in FIG7, the second filter frame 32 is provided with a door plate 323 at the inlet of the shavings receiving cavity 321. The door plate 323 is pivotally connected to the second filter frame 32. The door plate 323 has an opening 3231 that allows airflow to pass through. The size of the opening 3231 is smaller than the size of the inlet of the shavings receiving cavity 321.

[0082] The inlet of the lint receiving cavity 321 refers to the side away from the second filter screen. By setting a door plate 323 at the inlet, it is beneficial to prevent the lint in the lint receiving cavity 321 from falling out of the inlet of the lint receiving cavity 321.

[0083] For example, the first end of the door panel 323 along its length direction is pivotally connected to the first end of the second filter frame 32 along its length direction. When it is necessary to clean the lint in the lint receiving cavity 321, the door panel 323 is rotated at a certain angle (30 degrees or 60 degrees, etc.) relative to the second filter frame 32 to open the inlet of the lint receiving cavity 321, thereby facilitating the cleaning of the lint in the lint receiving cavity 321.

[0084] Preferably, as shown in FIG7, the door panel 323 is provided with a strip rib (not shown in the figure), which extends from one end of the opening 3231 to the other end of the opening 3231.

[0085] By setting strip ribs in the opening 3231 of the door panel 323, it is more effective to prevent the wire debris in the wire debris receiving cavity 321 from falling out of the inlet of the wire debris receiving cavity 321.

[0086] The strip reinforcement can extend along the length of the opening 3231, or it can extend along the width of the opening 3231, or the strip reinforcement can be provided along both the length and width of the opening 3231.

[0087] Preferably, as shown in Figures 7 to 9, the second filtration device of the present invention further includes a locking pin 34, which is mounted on the pull-out bracket 31. The locking pin 34 is provided with a first locking structure 341, and the second filter frame 32 is provided with a second locking structure 322. When the locking pin 34 is in the locked position, the first locking structure 341 and the second locking structure 322 cooperate to lock the second filter frame 32 to the pull-out bracket 31. When the locking pin 34 is in the unlocked position, the first locking structure 341 and the second locking structure 322 separate, so that the second filter frame 32 can be detached from the pull-out bracket 31.

[0088] The present invention locks the pull-out bracket 31 and the second filter frame 32 by locking pin 34. When it is necessary to separate the pull-out bracket 31 and the second filter frame 32, the locking pin 34 can be unlocked.

[0089] It should be noted that the present invention does not limit the specific structural form of the first locking structure 341 and the second locking structure 322. For example, the first locking structure 341 and the second locking structure 322 can be configured as a structure in which two locking hooks cooperate, or as a structure in which a locking hook cooperates with a lock opening, or as a structure in which a locking pin cooperates with a lock hole, etc.

[0090] Preferably, as shown in Figures 8 and 9, the first locking structure 341 is a locking hook, and the second locking structure 322 is a locking port adapted to the locking hook, with a portion of the locking hook being able to be inserted into the locking port.

[0091] As exemplarily shown in Figures 8 and 9, the locking pin 34 is vertically mounted on the pull-out bracket 31. Two locking hooks are provided on the locking pin 34, spaced apart along the axis of the locking pin 34. Correspondingly, the second filter frame 32 has two locking slots, with the locking hooks located below them. When the locking hooks are inserted into the locking slots, the pull-out bracket 31 and the second filter frame 32 are locked together. When it is necessary to disassemble the pull-out bracket 31 and the second filter frame 32, the locking pin 34 is pressed down to separate the locking hooks from the locking slots. It should be noted that only one locking hook and one locking slot can also be provided.

[0092] Preferably, the second filtering device of the present invention further includes an elastic reset member (not shown in the figure) installed on the pull-out bracket 31. The two ends of the elastic reset member are respectively connected to the pull-out bracket 31 and the locking pin 34. Under the action of the elastic reset member, the locking pin 34 can move from the unlocked position to the locked position.

[0093] For example, the elastic reset member is arranged vertically and located between the locking pin 34 and the inner bottom wall of the pull-out bracket 31. When the locking pin 34 is pressed down, the elastic reset member is compressed. When the locking pin 34 is released, the elastic reset member can push the locking pin 34 up, so that the locking pin 34 moves from the unlocked position to the locked position.

[0094] Preferably, the locking pin 34 is also provided with a receiving groove (not shown in the figure), and a part of the elastic reset member is located in the receiving groove.

[0095] For example, the locking pin 34 is vertically arranged, the receiving groove extends along the axis of the locking pin 34 to the bottom end of the locking pin 34, and the elastic reset member is inserted into the receiving groove from the bottom end of the locking pin 34.

[0096] It should be noted that the present invention does not limit the specific structural form of the elastic reset member. For example, the elastic reset member can be set as a spring or a rubber column, etc. Of course, the present invention preferably sets the elastic reset member as a spring.

[0097] Those skilled in the art will understand that although some embodiments described herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of this application and form different embodiments. For example, any of the claimed embodiments in the claims of this application can be used in any combination.

[0098] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A drying system, characterized by, The drying system comprises a drying air duct, a flushing mechanism, a first filtering device and a second filtering device downstream of the first filtering device, the first filtering device is arranged in the drying air duct, a first plug-in interface is arranged on the drying air duct, a part of the second filtering device extends into the drying air duct through the first plug-in interface, and the flushing mechanism can spray water towards the first filtering device to flush the first filtering device.

2. The drying system of claim 1, wherein, The first filtering device comprises a first filter screen frame and a first filter screen arranged on the first filter screen frame, and the first filter screen is arranged obliquely along the flow direction of the airflow from the bottom to the top.

3. The drying system of claim 2, wherein, The flushing mechanism comprises a flushing chamber arranged on the top of the first filter screen frame and a water spraying port, the water spraying port communicates with the flushing chamber, and the water spraying port is arranged towards the first filter screen.

4. The drying system of claim 3, wherein, The flushing chamber extends along the length direction of the first filter screen, and the number of the water spraying ports is multiple and is distributed at intervals along the length direction of the flushing chamber.

5. The drying system of claim 1, wherein, The second filtering device comprises a pulling bracket, a second filter screen frame and a second filter screen arranged on the second filter screen frame, one end of the pulling bracket along the length direction is detachably fixedly connected with one end of the second filter screen frame along the length direction, and the second filter screen frame and the second filter screen extend into the drying air duct through the first plug-in interface.

6. The drying system of claim 5, wherein, The second filter screen frame is provided with a wire scrap containing cavity, the wire scrap containing cavity is located upstream of the second filter screen and can contain wire scrap intercepted by the second filter screen.

7. The drying system of claim 6, wherein, The second filter screen frame is provided with a door plate at the inlet position of the wire scrap containing cavity, the door plate is pivotally connected with the second filter screen frame, the door plate has an opening allowing airflow to pass through, and the size of the opening is smaller than the size of the inlet.

8. The drying system of claim 7, wherein, The door plate is provided with a strip-shaped rib, and the strip-shaped rib extends from one end of the opening to the other end of the opening.

9. The drying system of claim 5, wherein, The second filtering device further comprises a locking pin mounted on the pulling bracket, the locking pin is provided with a first locking structure, the second filter screen frame is provided with a second locking structure, when the locking pin is in a locking position, the first locking structure cooperates with the second locking structure to lock the second filter screen frame to the pulling bracket, and when the locking pin is in an unlocking position, the first locking structure is separated from the second locking structure to allow the second filter screen frame to be detached from the pulling bracket.

10. A drying apparatus, characterized by, The drying equipment comprises the drying system according to any one of claims 1 to 9.

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