Quick discharge valve structure and cleaning equipment

Abstract

The utility model relates to the technical field of solar energy, in particular to a quick discharge valve structure and cleaning device.The quick discharge valve structure is used for being installed at the tank bottom of a cleaning tank, a liquid discharge port is formed in the tank bottom, the quick discharge valve structure comprises a first sealing cover, a first sealing gasket and a driving part, and the first sealing cover is used for being arranged on the liquid discharge port in a covering mode; the first sealing gasket is arranged on the side, facing the groove bottom, of the first sealing cover. The driving part comprises a driving part and a piston rod; the driving part is used for driving the piston rod to stretch; the driving part is arranged on the side, away from the first sealing cover, of the groove bottom. The end, away from the driving part, of the piston rod penetrates through the liquid outlet and the first sealing gasket to be in sealing connection with the first sealing cover. The first sealing cover can be connected with the tank bottom in a sealed mode through the first sealing gasket, so that the liquid outlet is sealed, the sealing effect is good, the first sealing gasket has the sealing and buffering effects, and the risk of abrasion and liquid leakage caused by power sealing is effectively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of solar energy, and in particular to a quick drain valve structure and a cleaning device. BACKGROUND

[0002] With the development of the semiconductor industry, the critical dimension of device process technology is continuously reduced, and the cleanliness of a silicon wafer has a great impact on the yield of manufacturing, so the cleanliness of the silicon wafer in each processing process has higher requirements. The silicon wafer wet cleaning can be divided into three ways: tank type, rotary washing and single piece cleaning. Among them, the tank type cleaning is widely used because of its efficient working mode. After cleaning, the chemical liquid residue on the silicon wafer must be removed, and deionized water cleaning is accompanied after each wet cleaning chemical process tank. The QDR (Quick Dump Rinse) tank is a commonly used way in deionized water cleaning, and is an indispensable part of the tank type cleaning device. It is mainly used to remove the particulate impurities and residual chemical liquid on the surface of the silicon wafer, so as to clean the surface of the silicon wafer.

[0003] The QDR quick drain cleaning tank has a cleaning tank, a drain port is formed in the bottom of the cleaning tank, a valve for controlling drainage is arranged at the drain port, the silicon wafer is immersed below the liquid level of the cleaning chemical liquid during cleaning, and after cleaning, the valve is opened to drain the cleaning chemical liquid from the cleaning tank through the drain port. In the related art, there is an outwardly convex pipe at the drain port, and the outwardly convex pipe has a through hole. The quick drain valve structure is installed on the outwardly convex pipe, and a conical sealing sleeve and a sealing ring are used to form a dynamic seal with the through hole of the outwardly convex pipe. However, the sealing sleeve and the sealing ring will be worn out after long-term use, which will cause the risk of liquid leakage, so that the drainage effect is poor, the cleaning effect of the silicon wafer is poor, and the efficiency of the final battery piece is affected.

[0004] It should be noted that the above content is not necessarily prior art, and is not used to limit the patent protection scope of the present application. UTILITY MODEL CONTENT

[0005] The embodiments of the present application provide a quick drain valve structure and a cleaning device to solve or alleviate one or more technical problems proposed above.

[0006] As a first aspect of the embodiments of the present application, the embodiments of the present application provide a quick drain valve structure for installation in a tank bottom of a cleaning tank, the tank bottom is provided with a drain port, and the quick drain valve structure comprises:

[0007] A first sealing cover is used to cover the drain port;

[0008] A first sealing gasket is arranged on the side of the first sealing cover facing the tank bottom;

[0009] The driving member comprises a driving part and a piston rod, the driving part is used to drive the piston rod to perform telescopic movement, the driving part is arranged on the side of the groove bottom away from the first sealing cover, and one end of the piston rod away from the driving part is sealingly connected through the liquid outlet, the first sealing gasket and the first sealing cover.

[0010] Optionally, the driving part comprises a driving body, an air cavity and a communication hole are arranged in the driving body, the air cavity and the communication hole are communicated, one end of the piston rod is located in the air cavity, and the other end of the piston rod is connected with the first sealing cover through the communication hole and the liquid outlet; the piston rod is sealingly and slidingly connected with the communication hole.

[0011] A sealing sleeve is arranged on the piston rod, the sealing sleeve is slidingly and sealingly connected with the inner wall forming the air cavity, the sealing sleeve is used to divide the air cavity into a first air cavity and a second air cavity, a first air hole and a second air hole are arranged on the driving body, the first air hole is communicated with the first air cavity, and the second air hole is communicated with the second air cavity.

[0012] Optionally, the driving body comprises a driving cylinder and a driving cover, one end of the driving cylinder is connected with the groove bottom, and the other end of the driving cylinder is detachably connected with the driving cover; the first air cavity, the second air cavity and the communication hole are located in the driving cylinder.

[0013] A connecting groove communicated with the second air cavity is arranged in the end of the driving cylinder away from the groove bottom, and a connecting part is arranged on the driving cover and detachably arranged in the connecting groove.

[0014] The first air hole is arranged on the driving cylinder, the second air hole is arranged on the driving cover, and a connecting hole is arranged on the connecting part; one end of the connecting hole is communicated with the second air cavity, and the other end of the connecting hole is communicated with the second air hole.

[0015] Optionally, the width of the connecting groove is greater than the width of the second air cavity, and a first sealing ring is arranged on the inner wall forming the connecting groove and sealingly contacts the end of the connecting part.

[0016] Optionally, a first sealing groove is arranged in the end of the driving cylinder away from the groove bottom, and a second sealing ring is arranged in the first sealing groove and sealingly contacts the driving cover.

[0017] Optionally, a third sealing ring is arranged on the inner wall forming the communication hole and sealingly and movably connected with the piston rod.

[0018] Optionally, a second sealing groove is formed on one side of the first sealing cover facing the groove bottom, and a fourth sealing ring is arranged in the second sealing groove and in sealing contact with the first sealing gasket.

[0019] Optionally, the quick drainage valve structure further comprises a connecting nut and a second sealing cover; a mounting hole is formed through the first sealing cover, one end of the piston rod passes through the mounting hole and is connected with the connecting nut, and the width of the connecting nut is greater than the width of the mounting hole.

[0020] The second sealing cover is sealingly arranged on the side of the first sealing cover away from the groove bottom, and the connecting nut is sealingly arranged between the first sealing cover and the second sealing cover.

[0021] Optionally, the quick drainage valve structure further comprises a mounting plate and a mounting rod, the mounting rod is arranged on the side of the groove bottom away from the first sealing cover, the mounting rod is arranged on the circumferential side of the liquid outlet, and the mounting plate is arranged on one end of the mounting rod away from the groove bottom; the driving part is sealingly connected to the side of the mounting plate away from the mounting rod through a second sealing gasket.

[0022] The mounting plate and the groove bottom are supported by the mounting rod to form a liquid drainage space, and the liquid drainage space is used for quickly draining liquid.

[0023] As a second aspect of the embodiments of the present application, the embodiments of the present application provide a cleaning device, comprising:

[0024] A cleaning tank is provided with a groove bottom, and the groove bottom is provided with a liquid outlet.

[0025] The quick drainage valve structure is arranged on the groove bottom, and is used for controlling the liquid drainage time of the liquid outlet.

[0026] The technical solutions of the embodiments of the present application can include the following advantages:

[0027] When liquid needs to be drained, the piston rod of the driving part drives the first sealing cover to drive the first sealing gasket away from the groove bottom, opens the liquid outlet, and timely drains the liquid in the cleaning tank, so that the liquid drainage effect is good, and the cleaning effect on the silicon wafer is effectively improved; and the first sealing cover is sealingly connected to the groove bottom through the first sealing gasket, so that the liquid outlet is sealed, the sealing effect is good, and the first sealing gasket plays a sealing and buffering effect, thereby effectively improving the risk of wear and liquid leakage caused by dynamic sealing. BRIEF DESCRIPTION OF DRAWINGS

[0028] In the drawings, like reference numerals refer to same or similar components throughout the several views. The drawings are not necessarily to scale. It should be understood that the drawings only depict some embodiments of the disclosure and do not imply any limitation of the scope of the disclosure.

[0029] Fig. 1 is a structural schematic diagram of a cleaning device provided by an embodiment of the present application.

[0030] Fig. 2 is a sectional view of a quick drain valve structure provided by an embodiment of the present application.

[0031] Fig. 3 is a structural schematic diagram of a piston rod of a quick drain valve structure provided by an embodiment of the present application.

[0032] Legend of reference numerals:

[0033] 1, first sealing cover; 11, first sealing gasket; 12, second sealing groove; 13, fourth sealing ring; 14, mounting hole; 21, piston rod; 211, sealing sleeve; 22, drive cylinder body; 221, communication hole; 222, first air cavity; 223, second air cavity; 224, first air hole; 225, connecting groove; 226, first sealing ring; 227, first sealing groove; 228, second sealing ring; 229, third sealing ring; 23, drive cover body; 231, second air hole; 232, connecting part; 233, connecting hole; 3, connecting nut; 4, second sealing cover; 5, mounting plate; 51, second sealing gasket; 6, mounting rod; 61, liquid discharge space; 7, cleaning tank; 71, tank bottom; 72, liquid discharge port. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application will be further described in detail below in combination with the drawings and embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0035] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0036] Exemplary embodiments according to this application will now be described in more detail with reference to the accompanying drawings. It should be understood that these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein.

[0037] like Figs. 1-3 As shown, in a first aspect, embodiments of this application can provide a quick-drain valve structure, which is installed on the bottom 71 of a cleaning tank 7. The bottom 71 has a drain port 72. The quick-drain valve structure may include:

[0038] First sealing cover 1, the first sealing cover 1 is used to cover the drain port 72;

[0039] The first sealing gasket 11 is disposed on the side of the first sealing cover 1 facing the bottom of the groove 71;

[0040] The driving component includes a driving part and a piston rod 21. The driving part is used to drive the piston rod 21 to extend and retract. The driving part is located on the side of the bottom of the tank 71 away from the first sealing cover 1. The end of the piston rod 21 away from the driving part passes through the drain port 72, the first sealing gasket 11 and the first sealing cover 1 for sealing connection.

[0041] In this embodiment, when drainage is required, the piston rod 21 of the drive unit drives the first sealing cover 1 to move the first sealing gasket 11 away from the bottom of the tank 71, opening the drain port 72 and timely draining the liquid in the cleaning tank 7. The drainage effect is good, effectively improving the cleaning effect on the silicon wafer. Furthermore, the first sealing cover 1 is sealed to the bottom of the tank 71 through the first sealing gasket 11, thereby sealing the drain port 72. The sealing effect is good, and the first sealing gasket 11 plays a sealing and buffering role, effectively improving the risk of leakage due to wear caused by dynamic sealing.

[0042] It should be noted that during the drainage process in cleaning tank 7, the drainage speed needs to be reduced at the beginning. Otherwise, the rapid lateral flow of the solution can easily cause silicon wafer stacking. This stage is defined as the slow drainage stage. When the liquid level drops to a point where stacking is no longer a risk, the valve opening increases, and the solution is discharged rapidly. This stage is defined as the fast drainage stage. During the fast drainage stage, the valve needs to work with the spray to quickly drain the pure water within a certain time, lowering the liquid level below the silicon wafers to remove particulate impurities and residual chemicals from the silicon wafer surface. However, the conventional non-metallic pneumatic drainage valves currently used in photovoltaic systems have a maximum pipe diameter of 2 inches (63mm outer diameter), resulting in poor drainage performance and requiring more time for drainage. The fast drainage stage requires a shorter time, which cannot meet the time requirements, leading to poor cleaning results and affecting the final cell efficiency. The fast drainage valve structure of this application eliminates the need for an externally protruding pipe, ensuring a better sealing effect and eliminating the risk of leakage during long-term use. The diameter of the drain port 72 can be set according to the drainage time requirements. The drain port 72 can be opened by driving the first sealing cover 1 through the piston rod 21, so that the liquid in the cleaning tank 7 can be discharged quickly in a short time, which meets the time requirement of the fast drainage stage, ensures the process effect, makes the silicon wafer surface cleaner, and has a better cleaning effect, thereby effectively ensuring the yield of the cell.

[0043] In an optional embodiment, the drive unit includes a drive body, which has an air chamber and a connecting hole 221, and the air chamber and the connecting hole 221 are connected. One end of the piston rod 21 is located in the air chamber, and the other end passes through the connecting hole 221 and the drain port 72 and is connected to the first sealing cover 1. The piston rod 21 is sealed and slidably connected to the connecting hole 221. A sealing sleeve 211 is fitted on the piston rod 21, and the sealing sleeve 211 is slidably and sealedly connected to the inner wall forming the air chamber. The sealing sleeve 211 is used to divide the air chamber to form a first air chamber 222 and a second air chamber 223. The drive body is provided with a first vent hole 224 and a second vent hole 231. The first vent hole 224 is connected to the first air chamber 222, and the second vent hole 231 is connected to the second air chamber 223.

[0044] In the embodiment, the piston rod 21 is sealingly and slidingly connected with the communication hole 221, so that the gas in the air cavity cannot be leaked, and the driving effect of the piston rod 21 is improved. The first communication hole 221 and the second communication hole 221 are both externally connected with the electromagnetic valve and the throttle valve through the gas path, nitrogen or compressed air can be supplied into the first communication hole 221 and the second communication hole 221 through the gas path, and the electromagnetic valve can control the opening and closing of the gas path, and the throttle valve can control the gas flow. When the drain port 72 needs to be opened, the electromagnetic valve controlling the second communication hole 221 starts to supply gas, the electromagnetic valve of the first communication hole 221 does not supply gas, and the gas supplied into the second air cavity 223 drives the piston rod 21 to move upward through the sealing sleeve 211, the piston rod 21 drives the first sealing cover 1 and the first sealing gasket 11 to move upward, so that there is a certain distance between the groove bottom 71 and the first sealing gasket 11, that is, the drain port 72 is opened, and the liquid in the cleaning tank 7 can enter the drain port 72 from the gap to be discharged, thereby achieving the effect of draining liquid. When the drain port 72 needs to be closed, the electromagnetic valve controlling the second communication hole 221 does not supply gas, and the electromagnetic valve of the first communication hole 221 starts to supply gas, and the gas supplied into the first air cavity 222 drives the piston rod 21 to move downward through the sealing sleeve 211, and the piston rod 21 drives the first sealing cover 1 and the first sealing gasket 11 to contact the groove bottom 71, so that the first sealing gasket 11 and the groove bottom 71 are sealed under the action of the gas pressure, and the drain port 72 is sealed.

[0045] In the optional embodiment, the driving body includes a driving cylinder 22 and a driving cover 23; one end of the driving cylinder 22 is connected with the groove bottom 71, and the other end is detachably connected with the driving cover 23; the first air cavity 222, the second air cavity 223 and the communication hole 221 are located in the driving cylinder 22; a connecting groove 225 in communication with the second air cavity 223 is formed in the end of the driving cylinder 22 away from the groove bottom 71, and a connecting part 232 is arranged on the driving cover 23 and detachably arranged in the connecting groove 225; the first air hole 224 is arranged on the driving cylinder 22, the second air hole 231 is arranged on the driving cover 23, and a connecting hole 233 is formed in the connecting part 232; one end of the connecting hole 233 is in communication with the second air cavity 223, and the other end is in communication with the second air hole 231.

[0046] In the embodiment, the driving body is designed in a split type and is composed of the driving cylinder 22 and the driving cover 23, and when installed, only one end of the piston rod 21 is inserted into the driving cylinder 22 from the connecting groove 225, and then the connecting part 232 of the driving cover 23 is connected in the connecting groove 225, so that the installation of the piston rod 21 is completed, and the installation is more convenient and fast. The first air hole 224 is arranged on the driving cylinder 22 and in communication with the first air cavity 222, and the second air hole 231 is arranged on the driving cover 23 and in communication with the second air cavity 223 through the connecting hole 233, so that the driving effect of the piston rod 21 is realized.

[0047] In an optional embodiment, the width of the connecting groove 225 is greater than the width of the second air cavity 223, and the first sealing ring 226 is arranged on the inner wall of the connecting groove 225 and in sealing contact with the end of the connecting portion 232.

[0048] In the embodiment, the width of the connecting groove 225 is greater than the width of the second air cavity 223, and the first sealing ring 226 is arranged, which together achieve a better sealing effect between the driving cylinder body 22 and the driving cover body 23, thereby improving the sealing effect of the second air cavity 223.

[0049] In an optional embodiment, the first sealing groove 227 is arranged on the end of the driving cylinder body 22 away from the groove bottom 71, and the second sealing ring 228 is arranged in the first sealing groove 227 and in sealing contact with the driving cover body 23. The arrangement of the second sealing ring 228 further improves the sealing effect between the driving cylinder body 22 and the driving cover body 23.

[0050] In an optional embodiment, the third sealing ring 229 is arranged on the inner wall of the communication hole 221 and in sealing and movable connection with the piston rod 21. The arrangement of the third sealing ring 229 achieves a sealing effect between the piston rod 21 and the inner wall of the communication hole 221.

[0051] In an optional embodiment, the second sealing groove 12 is arranged on the side of the first sealing cover 1 facing the groove bottom 71, and the fourth sealing ring 13 is arranged in the second sealing groove 12 and in sealing contact with the first sealing gasket 11. The arrangement of the fourth sealing ring 13 effectively improves the sealing effect between the first sealing cover 1 and the first sealing gasket 11 and reduces the situation that the liquid in the cleaning tank 7 enters the gap between the first sealing cover 1 and the first sealing gasket 11.

[0052] In an optional embodiment, the quick drain valve structure further includes a connecting nut 3 and a second sealing cover 4. The mounting hole 14 is arranged through the first sealing cover 1, the piston rod 21 passes through the mounting hole 14 and is connected with the connecting nut 3, and the width of the connecting nut 3 is greater than the width of the mounting hole 14. The second sealing cover 4 is sealingly arranged on the side of the first sealing cover 1 away from the groove bottom 71, and the connecting nut 3 is sealingly arranged between the first sealing cover 1 and the second sealing cover 4.

[0053] In the embodiment, the piston rod 21 is screwed with the connecting nut 3 through the mounting hole 14, and the width of the connecting nut 3 is greater than the width of the mounting hole 14, so that the piston rod 21 cannot be separated from the mounting hole 14, and the connection between the piston rod 21 and the first sealing cover 1 is achieved. The second sealing cover 4 is sealingly arranged between the first sealing cover 1, that is, the mounting hole 14 is sealed, so as to reduce the liquid in the cleaning tank 7 from entering the mounting hole 14, thereby avoiding the liquid leakage.

[0054] In the optional embodiment, the quick drainage valve structure further comprises a mounting plate 5 and a mounting rod 6, the mounting rod 6 is arranged on the side of the tank bottom 71 away from the first sealing cover 1, the mounting rod 6 is arranged on the circumferential side of the liquid outlet 72, the mounting plate 5 is arranged on the end of the mounting rod 6 away from the tank bottom 71; the driving part is sealingly connected to the side of the mounting plate 5 away from the mounting rod 6 through the second sealing gasket 51; the mounting plate 5 and the tank bottom 71 are supported by the mounting rod 6 to form a liquid drainage space 61, and the liquid drainage space 61 is used for quickly draining the liquid.

[0055] In the embodiment, the mounting plate 5 and the mounting rod 6 form a carrier for mounting the driving part, and the mounting rod 6 is arranged to form the liquid drainage space 61 between the mounting plate 5 and the tank bottom 71, so as to facilitate the liquid drainage. The second sealing gasket 51 is arranged to improve the sealing between the driving part and the mounting plate 5, and reduce the risk of air leakage of the communication hole 221 in the driving part.

[0056] In a second aspect, the embodiments of the present application can provide a cleaning device, which comprises:

[0057] The cleaning device comprises a cleaning tank 7, and the cleaning tank 7 is provided with a tank bottom 71, and the tank bottom 71 is provided with a liquid outlet 72 penetratingly arranged thereon.

[0058] The quick drainage valve structure of any one of the above embodiments is arranged on the tank bottom 71, and the quick drainage valve structure is used for controlling the liquid drainage time of the liquid outlet 72.

[0059] It should be noted that the terms used herein are only intended to describe specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should also be understood that, when the terms "comprise" and / or "include" are used in the specification, there is a presence of a feature, step, operation, device, component and / or combination thereof.

[0060] For the convenience of description, the orientation words such as "front, back, upper, lower, left, right", "transverse, vertical, perpendicular, horizontal", and "top, bottom" and the like indicated orientation or position relationship are generally based on the orientation or position relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, without making the opposite statement, these orientation words do not indicate and imply that the indicated device or element must have a specific orientation or be constructed and operated in a specific orientation, therefore, it cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself. For example, if the device in the drawing is inverted, the device described as "above" or "on" other devices or structures will be positioned "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.

[0061] Unless specifically stated and limited otherwise, the terms "mount", "connect", "connection", "fixed", and the like, should be broadly interpreted, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection, or communication; it can be direct connection, or indirect connection through intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0062] Unless specifically stated and limited otherwise, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature "under", "below" and "under" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.

[0063] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0064] It should also be noted that the terms "one embodiment," "another embodiment," or "embodiment" used in this specification refer to specific features, structures, or characteristics described in connection with that embodiment, which are included in at least one embodiment described in the general description of this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in connection with any embodiment, the intention is to suggest that implementing such a feature, structure, or characteristic in conjunction with other embodiments also falls within the scope of this application.

[0065] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0066] It should also be noted that the above are merely preferred embodiments of this application and do not limit the scope of patent protection of this application. Any equivalent structural or procedural changes made using the content of this application’s specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of this application.

Claims

1. A quick-drain valve structure for installation on the bottom (71) of a cleaning tank (7), wherein the bottom (71) is provided with a drain port (72), characterized in that, include: The first sealing cap (1) is used to cover the drain port (72); The first sealing gasket (11) is disposed on the side of the first sealing cover (1) facing the bottom of the groove (71); The driving component includes a driving part and a piston rod (21). The driving part is used to drive the piston rod (21) to extend and retract. The driving part is located on the side of the bottom of the groove (71) away from the first sealing cover (1). The end of the piston rod (21) away from the driving part passes through the drain port (72), the first sealing gasket (11) and the first sealing cover (1) and is sealed together.

2. The quick-release valve structure according to claim 1, characterized in that, The drive unit includes a drive body, which has an air chamber and a connecting hole (221) inside. The air chamber and the connecting hole (221) are connected. One end of the piston rod (21) is located in the air chamber, and the other end passes through the connecting hole (221) and the drain port (72) and is connected to the first sealing cover (1). The piston rod (21) is sealed to the connecting hole (221) and is slidably connected. A sealing sleeve (211) is fitted on the piston rod (21), and the sealing sleeve (211) slides and seals against the inner wall forming the air chamber; the sealing sleeve (211) is used to divide the air chamber to form a first air chamber (222) and a second air chamber (223); a first vent hole (224) and a second vent hole (231) are provided on the drive body, the first vent hole (224) communicates with the first air chamber (222), and the second vent hole (231) communicates with the second air chamber (223).

3. The quick-release valve structure according to claim 2, characterized in that, The driving body includes a driving cylinder (22) and a driving cover (23); one end of the driving cylinder (22) is connected to the bottom of the groove (71), and the other end is detachably connected to the driving cover (23); the first air chamber (222), the second air chamber (223) and the connecting hole (221) are located in the driving cylinder (22); The drive cylinder (22) has a connecting groove (225) at one end away from the bottom of the groove (71) that communicates with the second air chamber (223). The drive cover (23) is provided with a connecting part (232), which is detachably disposed in the connecting groove (225). The first vent (224) is provided on the drive cylinder (22), the second vent (231) is provided on the drive cover (23), and the connecting part (232) is provided with a connecting hole (233); one end of the connecting hole (233) is connected to the second air chamber (223), and the other end is connected to the second vent (231).

4. The quick-release valve structure according to claim 3, characterized in that, The width of the connecting groove (225) is greater than the width of the second air chamber (223), and a first sealing ring (226) is provided on the inner wall of the connecting groove (225), and the first sealing ring (226) is in sealing contact with the end of the connecting part (232).

5. The quick-release valve structure according to claim 3, characterized in that, The drive cylinder (22) has a first sealing groove (227) at one end away from the bottom of the groove (71), and a second sealing ring (228) is provided in the first sealing groove (227). The second sealing ring (228) is in sealing contact with the drive cover (23).

6. The quick-release valve structure according to claim 2, characterized in that, A third sealing ring (229) is provided on the inner wall of the connecting hole (221), and the third sealing ring (229) is in a sealed and movable connection with the piston rod (21).

7. The quick-release valve structure according to claim 1, characterized in that, The first sealing cover (1) has a second sealing groove (12) on the side facing the bottom of the groove (71), and a fourth sealing ring (13) is provided in the second sealing groove (12), and the fourth sealing ring (13) is in sealing contact with the first sealing gasket (11).

8. The quick-release valve structure according to claim 7, characterized in that, The quick-release valve structure also includes a connecting nut (3) and a second sealing cover (4); the first sealing cover (1) has a through mounting hole (14), one end of the piston rod (21) passes through the mounting hole (14) and is connected to the connecting nut (3), and the width of the connecting nut (3) is greater than the width of the mounting hole (14); The second sealing cap (4) is sealed on the side of the first sealing cap (1) away from the bottom of the groove (71), and the connecting nut (3) is sealed between the first sealing cap (1) and the second sealing cap (4).

9. The quick-release valve structure according to claim 1, characterized in that, The quick-release valve structure also includes a mounting plate (5) and a mounting rod (6). The mounting rod (6) is located on the side of the bottom of the tank (71) away from the first sealing cover (1). The mounting rod (6) is located on the periphery of the drain port (72). The mounting plate (5) is located at the end of the mounting rod (6) away from the bottom of the tank (71). The drive unit is sealed to the side of the mounting plate (5) away from the mounting rod (6) through a second sealing gasket (51). The mounting plate (5) and the bottom of the tank (71) are supported by the mounting rod (6) to form a drainage space (61), which is used to quickly drain the liquid.

10. A cleaning device, characterized in that, include: A cleaning tank (7) is provided with a bottom (71) and a drain outlet (72) is provided on the bottom (71); The quick-drain valve structure according to any one of claims 1 to 9, wherein the quick-drain valve structure is disposed on the bottom of the tank (71), and the quick-drain valve structure is used to control the drainage time of the drain port (72).

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