Opening and closing device for ventilation opening of clean water tank

Abstract

The utility model belongs to the technical field of clean water tank ventilation openings, and particularly relates to an opening and closing device for a clean water tank ventilation opening, which comprises a ventilation pipe, a circular plate fixedly mounted in the ventilation pipe, a plurality of second arc-shaped grooves formed in the circular plate, a rotating groove formed in the ventilation pipe and located at the top of the circular plate, and a rotating disc rotating in the rotating groove. A plurality of first arc-shaped grooves are formed in the rotating disc, a first sealing gasket making contact with the top of the circular plate is fixedly installed at the bottom of the rotating disc, a rectangular block is fixedly installed on the peripheral side of the rotating disc and located in the rotating groove, and one end of the rectangular block extends to the outside; according to the utility model, the ventilation pipe can be conveniently opened by a worker for ventilation, the operation process is relatively simple, the air outlet amount can be controlled, and meanwhile, air exhausted to the outside can be filtered, so that harmful substances cannot be contained in the exhausted air, the environment is protected, and when the filtering effect of the activated carbon filter screen becomes poor, the ventilation effect of the activated carbon filter screen is improved. And an activated carbon filter screen can be conveniently replaced by a worker.

Description

Technical Field

[0001] The utility model belongs to the technical field of clear water tank vents, in particular to an opening and closing device for clear water tank vents. Background Art

[0002] The clear water tank is a regulating and storage structure in the water supply system used to regulate the uniform water supply of the water plant and meet the uneven water use of users. Its main functions include: making full use of limited water resources when the water supply is insufficient, and implementing the principle of "more delivery during peak hours and more storage during off-peak hours", that is, giving full play to the maximum production capacity of existing equipment during peak water use, and storing excess water during off-peak hours.

[0003] Generally, clean water tanks have vents that can discharge air generated in the tank to the outside, preventing it from accumulating inside the tank and ensuring the safety of workers and water quality. At the same time, substances in the water may undergo chemical reactions, producing some harmful gases, such as hydrogen sulfide. These harmful gases, when discharged to the outside, can easily pollute the environment and are not conducive to environmental protection. In view of this, we propose an opening and closing device for clean water tank vents. Utility Model Content

[0004] The purpose of the utility model is to provide an opening and closing device for a vent of a clean water tank, so as to solve the problems raised in the above-mentioned background technology.

[0005] In view of this, the utility model provides an opening and closing device for a clean water tank vent, comprising:

[0006] A ventilation duct, wherein a circular plate is fixedly installed in the ventilation duct, and a plurality of arc-shaped grooves are opened on the circular plate. A rotating groove is opened in the ventilation duct and located on the top of the circular plate. A turntable rotates in the rotating groove, and a plurality of arc-shaped grooves are opened on the turntable. A sealing gasket is fixedly installed at the bottom of the turntable and contacts the top of the circular plate. A rectangular block is fixedly installed on the circumference of the turntable and located in the rotating groove, and one end of the rectangular block extends to the outside.

[0007] A limiting component is located in the ventilation duct and is used to limit the rectangular block;

[0008] A plug-in slot is provided in the ventilation duct and is located above the rotating slot. A plug-in board is installed in the plug-in slot. A placement slot is provided in the plug-in board. An activated carbon filter is provided in the placement slot. A sealing gasket 2 is fixedly installed on the top and bottom of the plug-in board. A handle is fixedly installed on one side of the plug-in board.

[0009] A fixing assembly is located in the ventilation duct and is used to fix the plug board.

[0010] In the present technical solution, the limiting assembly is provided, which can release the limit of the rectangular block. Then, the operator can rotate the turntable through the rectangular block. As the turntable rotates, the arc groove 1 will slowly overlap with the arc groove 2, so that the ventilation pipe can be opened. At the same time, the operator can control the overlap between the arc groove 1 and the arc groove 2 to control the air output of the ventilation pipe, ensuring that the ventilation pipe can be opened and ventilated easily. The operation process is relatively simple, and the air output can be controlled at the same time.

[0011] Through the activated carbon filter, during the ventilation process, the wind discharged from the clear water pool will be discharged to the outside through the activated carbon filter. The activated carbon filter can filter the discharged air and adsorb harmful substances in the discharged air to ensure that the air discharged to the outside does not contain harmful substances. When the activated carbon filter is used for a long time, the filtering effect of the activated carbon filter will deteriorate. At this time, the personnel can use the fixed component to release the fixing of the plug-in board. Then the personnel can use the handle to pull the plug-in board out of the plug-in slot and remove the activated carbon filter from the plug-in slot. Take it out from the placement slot, put the new activated carbon filter into the placement slot, and then insert the plug-in board back into the plug-in slot. When the plug-in board is completely inserted into the plug-in slot, the fixing assembly can fix the plug-in board. At the same time, the two sealing gaskets can ensure that the air will not be discharged from the plug-in slot to the outside. Since the diameter of the activated carbon filter is larger than the inner diameter of the ventilation pipe, the activated carbon filter will be limited by the top of the plug-in slot to ensure that the activated carbon filter will not shake, and ensure that when the filtering effect of the activated carbon filter deteriorates, it is convenient for personnel to replace the activated carbon filter.

[0012] In the above technical solution, further, the limiting component includes:

[0013] A sliding groove is provided in the ventilation duct and is located above the rectangular block. A limit block is slidably installed in the sliding groove. The bottom end of the limit block passes through the bottom of the sliding groove and extends into the rotating groove and rests on one side of the rectangular block. A spring 1 fixed to the inner wall of the sliding groove is fixed on the top of the limit block. One side of the limit block extends to the outside and is fixedly installed with a pulling plate.

[0014] In this technical solution, the pulling plate is moved upward, and the upward movement of the pulling plate will drive the limit block to move upward. The upward movement of the limit block will squeeze the spring 1 to contract until the bottom end of the limit block moves out of one side of the rectangular block. The limit block can then release the limit on the rectangular block. Then the person can rotate the turntable through the rectangular block. As the turntable rotates, the arc groove 1 will slowly overlap with the arc groove 2, so that the ventilation duct can be opened. At the same time, the person can control the size of the overlap between the arc groove 1 and the arc groove 2, thereby controlling the air outlet of the ventilation duct, ensuring that it is convenient for the person to open the ventilation duct and ventilate. The operation process is relatively simple, and the amount of air outlet can also be controlled.

[0015] In the above technical solution, further, the bottom end of the limit block is an inclined structure, and the cross-section of the pulling plate is an L-shaped structure.

[0016] In this technical solution, it is ensured that the rectangular block can move by squeezing the limit block, and that the pulling plate can facilitate the movement of personnel.

[0017] In the above technical solution, further, the fixing assembly includes:

[0018] A movable groove is provided in the ventilation duct and is located above the plug board. A movable block is slidably installed in the movable groove. A spring 2 fixed to the inner wall of the movable groove is fixedly installed on the top of the movable block. One end of the movable block extends to the outside and is fixedly installed with a baffle. One side of the baffle is against the peripheral side of the plug board.

[0019] In this technical solution, when the filtering effect of the activated carbon filter becomes worse, the personnel can move the baffle upwards. The upward movement of the baffle will drive the moving block to move upwards. The upward movement of the moving block will squeeze the spring 2 to contract until the bottom of the baffle moves out of one side of the plug-in board. The baffle can release the fixation of the plug-in board. Then the personnel can pull the plug-in board out of the plug-in slot through the handle, take out the activated carbon filter from the placement slot, put the new activated carbon filter into the placement slot, and then insert the plug-in board back into the plug-in slot. When the plug-in board is completely entered into the plug-in slot, release the baffle and pull the spring 2. Under the action of the rebound force, the second spring will squeeze the moving block to move downward, and the downward movement of the moving block will drive the baffle to move downward until one side of the baffle is against one side of the plug-in board. At this time, the baffle can fix the plug-in board. At the same time, under the sealing action of the two sealing gaskets, it can be ensured that air will not be discharged from the plug-in slot to the outside. Since the diameter of the activated carbon filter is larger than the inner diameter of the ventilation pipe, the activated carbon filter will be limited by the top of the plug-in slot to ensure that the activated carbon filter will not shake, and ensure that when the filtering effect of the activated carbon filter deteriorates, it is convenient for personnel to replace the activated carbon filter.

[0020] In the above technical solution, further, the cross section of the baffle is an L-shaped structure.

[0021] In this technical solution, it is ensured that the baffle can facilitate the movement of personnel.

[0022] In the above technical solution, further, the plurality of arc-shaped grooves 1 and the plurality of arc-shaped grooves 2 are arranged in an alternating manner.

[0023] In this technical solution, it is ensured that the ventilation pipe can be opened when the plurality of arc-shaped grooves 1 and the plurality of arc-shaped grooves 2 overlap, and the ventilation pipe can be closed when the plurality of arc-shaped grooves 1 and the plurality of arc-shaped grooves 2 are staggered.

[0024] In the above technical solution, further, the diameter of the activated carbon filter is larger than the inner diameter of the ventilation pipe.

[0025] In this technical solution, since the diameter of the activated carbon filter is larger than the inner diameter of the ventilation pipe, the activated carbon filter will be limited by the top of the plug-in slot to ensure that the activated carbon filter will not shake.

[0026] The beneficial effects of the utility model are:

[0027] 1. The opening and closing device of the vent of the clear water tank can release the limit of the rectangular block through the limit component. Then the personnel can rotate the turntable through the rectangular block. As the turntable rotates, the arc groove 1 will slowly overlap with the arc groove 2, so that the ventilation pipe can be opened. At the same time, the personnel can control the size of the overlap between the arc groove 1 and the arc groove 2 to control the air outlet of the ventilation pipe, ensuring that it is convenient for personnel to open the ventilation pipe and ventilate. The operation process is relatively simple and the air outlet volume can be controlled at the same time.

[0028] 2. The ventilation port of the clean water tank uses an opening and closing device. Through the activated carbon filter, during the ventilation process, the wind discharged from the clean water tank will be discharged to the outside through the activated carbon filter. The activated carbon filter can filter the discharged air and adsorb harmful substances in the discharged air to ensure that the air discharged to the outside does not contain harmful substances, thereby protecting the environment. When the activated carbon filter is used for a long time, the filtering effect of the activated carbon filter will deteriorate. At this time, the personnel can release the fixing component of the fixed component, and then the personnel can pull the plug board out of the plug slot through the handle. Out, take out the activated carbon filter from the placement slot, put the new activated carbon filter into the placement slot, and then insert the plug-in board back into the plug-in slot. When the plug-in board is completely inserted into the plug-in slot, the fixing assembly can fix the plug-in board. At the same time, the two sealing gaskets can ensure that the air will not be discharged from the plug-in slot to the outside. Since the diameter of the activated carbon filter is larger than the inner diameter of the ventilation pipe, the activated carbon filter will be limited by the top of the plug-in slot to ensure that the activated carbon filter will not shake, and ensure that when the filtering effect of the activated carbon filter deteriorates, it is convenient for personnel to replace the activated carbon filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0030] Figure 2 This is a schematic diagram of the detailed internal structure of the ventilation duct in the present invention;

[0031] Figure 3 For this utility model Figure 2 A in the middle is an enlarged structural diagram;

[0032] Figure 4 This is a schematic diagram of the structure of the turntable explosion in the utility model;

[0033] Figure 5 This is a schematic diagram of the structure of the activated carbon filter explosion in the utility model;

[0034] Figure 6 This is a schematic diagram of the cross-sectional structure of the ventilation pipe in the utility model;

[0035] Figure 7 For this utility model Figure 6 The enlarged structural diagram at B in the middle;

[0036] Figure 8 This is a schematic diagram of the partial structure of the ventilation pipe in the utility model;

[0037] Figure 9 This is a schematic diagram of the regional structure of the sealing gasket in the present invention.

[0038] The marks in the figure are:

[0039] 1. Ventilation duct; 2. Circular plate; 3. Rotating groove; 4. Turntable; 5. Arc groove 1; 6. Arc groove 2; 7. Sealing gasket 1; 8. Sliding groove; 9. Limit block; 10. Rectangular block; 11. Spring 1; 12. Pull plate; 13. Plug-in groove; 14. Plug-in plate; 15. Placement groove; 16. Activated carbon filter; 17. Sealing gasket 2; 18. Handle; 19. Moving groove; 20. Moving block; 21. Spring 2; 22. Baffle. DETAILED DESCRIPTION

[0040] The following will be combined with the accompanying drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0041] In the description of this application, it should be noted that the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn according to the actual proportional relationship. Technologies, methods and equipment known to ordinary technicians in the relevant fields may not be discussed in detail, but where appropriate, the technologies, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values should be interpreted as merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0042] It should be noted that the terms "first," "second," etc. in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than those illustrated or described herein, and that the objects distinguished by "first," "second," etc. are generally of the same type, and do not limit the number of objects. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0043] It should be noted that, in the description of this application, the directions or positional relationships indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise specified, these directional terms do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of this application; the directional terms "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0044] It should be noted that, in the present application, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0045] Example 1:

[0046] See also Figure 1 - Figure 9 As shown, this embodiment provides an opening and closing device for a clean water tank vent, comprising:

[0047] Ventilation duct 1, a circular plate 2 is fixedly mounted within ventilation duct 1, and circular plate 2 is provided with a plurality of arcuate grooves 6. A rotating groove 3 is provided within ventilation duct 1 and at the top of circular plate 2. A rotating turntable 4 rotates within rotating groove 3, and turntable 4 is provided with a plurality of arcuate grooves 5. A sealing gasket 7 is fixedly mounted at the bottom of turntable 4 and contacts the top of circular plate 2. A rectangular block 10 is fixedly mounted on the circumference of turntable 4 and located within rotating groove 3, and one end of rectangular block 10 extends to the outside.

[0048] A limiting component is located in the ventilation pipe 1 and is used to limit the rectangular block 10;

[0049] The plug-in slot 13 is provided in the ventilation pipe 1 and is located above the rotating slot 3. A plug-in plate 14 is installed in the plug-in slot 13. A placement slot 15 is provided in the plug-in plate 14. An activated carbon filter 16 is provided in the placement slot 15. A sealing gasket 17 is fixedly installed on the top and bottom of the plug-in plate 14. A handle 18 is fixedly installed on one side of the plug-in plate 14.

[0050] The fixing assembly is located in the ventilation pipe 1 and is used to fix the plug board 14.

[0051] Among them, through the provided limiting assembly, the limiting assembly can release the limit of the rectangular block 10, and then the personnel can rotate the turntable 4 through the rectangular block 10. As the turntable 4 rotates, the arc groove 1 5 will slowly overlap with the arc groove 2 6, so that the ventilation pipe 1 can be opened. At the same time, the personnel can control the overlap between the arc groove 1 5 and the arc groove 2 6 to control the air output of the ventilation pipe 1, ensuring that it is convenient for the personnel to open the ventilation pipe 1 and ventilate. The operation process is relatively simple, and the air output volume can also be controlled.

[0052] Through the activated carbon filter 16 provided, during the ventilation process, the wind discharged from the clean water pool will be discharged to the outside through the activated carbon filter 16, and the activated carbon filter 16 can filter the discharged air, and the activated carbon filter 16 can adsorb harmful substances in the discharged air to ensure that the air discharged to the outside does not contain harmful substances. When the activated carbon filter 16 is used for a long time, the filtering effect of the activated carbon filter 16 will deteriorate. At this time, the personnel can release the fixing component of the plug-in board 14 through the fixing component provided, and then the personnel can pull the plug-in board 14 out of the plug-in slot 13 through the handle 18, and remove the activated carbon filter 16 from the placement slot 15. Take it out, put the new activated carbon filter 16 into the placement groove 15, and then insert the plug-in board 14 back into the plug-in groove 13. When the plug-in board 14 is completely inserted into the plug-in groove 13, the fixing assembly can fix the plug-in board 14. At the same time, under the sealing action of the two sealing gaskets 17, it can be ensured that air will not be discharged from the plug-in groove 13 to the outside. Since the diameter of the activated carbon filter 16 is larger than the inner diameter of the ventilation pipe 1, the activated carbon filter 16 will be limited by the top of the plug-in groove 13 to ensure that the activated carbon filter 16 will not shake, and ensure that when the filtering effect of the activated carbon filter 16 deteriorates, it is convenient for personnel to replace the activated carbon filter 16.

[0053] Example 2:

[0054] This embodiment provides an opening and closing device for a clean water tank vent. In addition to the technical solutions of the above embodiments, it also has the following technical features. The limiting assembly includes:

[0055] The sliding groove 8 is opened in the ventilation pipe 1 and is located above the rectangular block 10. A limit block 9 is slidably installed in the sliding groove 8. The bottom end of the limit block 9 passes through the bottom of the sliding groove 8 and extends into the rotating groove 3 and rests on one side of the rectangular block 10. The top of the limit block 9 is fixedly installed with a spring 11 fixed to the inner wall of the sliding groove 8. One side of the limit block 9 extends to the outside and is fixedly installed with a pulling plate 12.

[0056] Among them, the pulling plate 12 is moved upward, and the upward movement of the pulling plate 12 will drive the limit block 9 to move upward. The upward movement of the limit block 9 will squeeze the spring 11 to shrink, until the bottom end of the limit block 9 moves out from one side of the rectangular block 10, the limit block 9 can release the limit of the rectangular block 10, and then the personnel can rotate the turntable 4 through the rectangular block 10. While the turntable 4 rotates, the arc groove 1 5 will slowly overlap with the arc groove 2 6, so that the ventilation pipe 1 can be opened. At the same time, the personnel can control the size of the overlap between the arc groove 1 5 and the arc groove 2 6 to control the air outlet of the ventilation pipe 1, ensuring that it is convenient for personnel to open the ventilation pipe 1 and ventilate. The operation process is relatively simple and the air outlet volume can be controlled.

[0057] Example 3:

[0058] This embodiment provides an opening and closing device for a clean water tank vent. In addition to the technical solutions of the above-mentioned embodiments, it also has the following technical features: the bottom end of the limit block 9 is an inclined structure, and the cross-section of the pulling plate 12 is an L-shaped structure.

[0059] Among them, it is ensured that the rectangular block 10 can move by squeezing the limit block 9 to move, and that the pulling plate 12 can facilitate the movement of personnel.

[0060] Example 4:

[0061] This embodiment provides an opening and closing device for a clean water tank vent. In addition to the technical solutions of the above embodiments, it also has the following technical features. The fixing assembly includes:

[0062] The movable groove 19 is opened in the ventilation duct 1 and is located above the plug board 14. A movable block 20 is slidably installed in the movable groove 19. The top of the movable block 20 is fixedly installed with a spring 21 fixed to the inner wall of the movable groove 19. One end of the movable block 20 extends to the outside and is fixedly installed with a baffle 22. One side of the baffle 22 is against the peripheral side of the plug board 14.

[0063] Among them, when the filtering effect of the activated carbon filter 16 becomes worse, the personnel can move the baffle 22 upwards. The upward movement of the baffle 22 will drive the moving block 20 to move upwards. The upward movement of the moving block 20 will squeeze the spring 21 to shrink until the bottom of the baffle 22 moves out from one side of the plug-in board 14. The baffle 22 can release the fixation of the plug-in board 14. Then the personnel can use the handle 18 to pull the plug-in board 14 out of the plug-in slot 13, and take out the activated carbon filter 16 from the placement slot 15, put the new activated carbon filter 16 into the placement slot 15, and then insert the plug-in board 14 back into the plug-in slot 13. When the plug-in board 14 completely enters the plug-in slot 13, release and pull the baffle 22. Under the action of the rebound force of spring 21, spring 21 will squeeze the moving block 20 to move downward, and the downward movement of the moving block 20 will drive the baffle 22 to move downward until one side of the baffle 22 is against one side of the plug-in board 14. At this time, the baffle 22 can fix the plug-in board 14. At the same time, under the sealing action of the two sealing gaskets 21, it can be ensured that air will not be discharged from the plug-in slot 13 to the outside. Since the diameter of the activated carbon filter 16 is larger than the inner diameter of the ventilation pipe 1, the activated carbon filter 16 will be limited by the top of the plug-in slot 13 to ensure that the activated carbon filter 16 will not shake, and ensure that when the filtering effect of the activated carbon filter 16 deteriorates, it is convenient for personnel to replace the activated carbon filter 16.

[0064] Example 5:

[0065] This embodiment provides an opening and closing device for a clean water tank vent. In addition to the technical solutions of the above-mentioned embodiments, it also has the following technical features: the cross-section of the baffle 22 is an L-shaped structure.

[0066] Here, it is ensured that the baffle 22 can facilitate the movement of personnel.

[0067] Example 6:

[0068] This embodiment provides an opening and closing device for a clean water tank vent. In addition to the technical solutions of the above embodiments, it also has the following technical features: a plurality of arc-shaped grooves 5 and a plurality of arc-shaped grooves 6 are arranged in an alternating manner.

[0069] It is ensured that when the plurality of arc-shaped grooves 1 5 and the plurality of arc-shaped grooves 2 6 overlap, the ventilation duct 1 can be opened, and when the plurality of arc-shaped grooves 1 5 and the plurality of arc-shaped grooves 2 6 are staggered, the ventilation duct 1 can be closed.

[0070] Example 7:

[0071] This embodiment provides an opening and closing device for a clean water tank vent. In addition to the technical solutions of the above embodiments, it also has the following technical features: the diameter of the activated carbon filter 16 is larger than the inner diameter of the ventilation pipe 1.

[0072] Since the diameter of the activated carbon filter 16 is larger than the inner diameter of the ventilation pipe 1 , the activated carbon filter 16 will be limited by the top of the plug-in slot 13 to ensure that the activated carbon filter 16 will not shake.

[0073] It is worth noting that the ventilation pipe 1 is fixedly installed at the ventilation opening of the clean water tank to ensure the structural stability of the entire device.

[0074] Working principle: During use, when the clear water pool needs to be ventilated, the personnel can first move the pulling plate 12 upwards. The upward movement of the pulling plate 12 will drive the limit block 9 to move upwards. The upward movement of the limit block 9 will squeeze the spring 11 to contract, until the bottom end of the limit block 9 moves out from one side of the rectangular block 10. The limit block 9 can release the limit of the rectangular block 10. Then the personnel can rotate the turntable 4 through the rectangular block 10. As the turntable 4 rotates, the arc groove 1 5 will slowly overlap with the arc groove 2 6, so that the ventilation pipe 1 can be opened. At the same time, the personnel can control the size of the overlap of the arc groove 1 5 and the arc groove 2 6 to control the air outlet of the ventilation pipe 1, ensuring that it is convenient for personnel to open the ventilation pipe 1 and ventilate. The operation process is relatively simple, and the amount of air out can be controlled. After the ventilation is completed, the personnel can rotate the turntable 4 again through the rectangular block 10, so that the arc groove 15 on the turntable 4 and the arc groove 2 6 on the circular plate 2 are staggered with each other. At the same time, the rotation of the rectangular block 10 will also squeeze the bottom end of the limit block 9, so that the limit block 9 moves upward and squeezes the spring 11 to contract. When the arc groove 26 is completely sealed by the turntable 4, under the action of the rebound force of the spring 11, the spring 11 will squeeze the limit block 9 to move downward until the bottom end of the limit block 9 rests on one side of the rectangular block 10. At this time, the limit block 9 can limit the rectangular block 10, and at the same time, under the sealing action of the sealing gasket 7, it can be ensured that there will be no air leakage.

[0075] During the ventilation process, the wind discharged from the clear water pool will be discharged to the outside through the activated carbon filter 16. The activated carbon filter 16 can filter the discharged air and adsorb the harmful substances in the discharged air to ensure that the air discharged to the outside does not contain harmful substances. When the activated carbon filter 16 is used for a long time, the filtering effect of the activated carbon filter 16 will deteriorate. At this time, the personnel can move the baffle 22 upward. The upward movement of the baffle 22 will drive the moving block 20 to move upward. The upward movement of the moving block 20 will squeeze the spring 21 to shrink until the bottom of the baffle 22 moves out from one side of the plug-in board 14. The baffle 22 can release the plug-in board 14. Then the personnel can pull the plug-in board 14 out of the plug-in slot 13 through the handle 18, and take out the activated carbon filter 16 from the placement slot 15, and put a new activated carbon filter 16 in When the plug-in plate 14 is fully inserted into the plug-in slot 13, the baffle 22 is released and pulled. Under the action of the rebound force of the spring 21, the spring 21 will squeeze the moving block 20 to move downward. The downward movement of the moving block 20 will drive the baffle 22 to move downward until one side of the baffle 22 is against one side of the plug-in plate 14. At this time, the baffle 22 can fix the plug-in plate 14. At the same time, under the sealing action of the two sealing gaskets 217, it can be ensured that air will not be discharged from the plug-in slot 13 to the outside. Since the diameter of the activated carbon filter 16 is larger than the inner diameter of the ventilation pipe 1, the activated carbon filter 16 will be limited by the top of the plug-in slot 13 to ensure that the activated carbon filter 16 will not shake, and to ensure that when the filtering effect of the activated carbon filter 16 deteriorates, it is convenient for personnel to replace the activated carbon filter 16.

[0076] The embodiments of the present application are described above in conjunction with the accompanying drawings. Unless there is a conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. An opening and closing device for a clean water tank vent, characterized in that: include: A ventilation pipe (1), wherein a circular plate (2) is fixedly installed in the ventilation pipe (1), and a plurality of arc-shaped grooves (6) are provided on the circular plate (2); a rotating groove (3) is provided in the ventilation pipe (1) and at the top of the circular plate (2); a rotating disc (4) is rotated in the rotating groove (3), and a plurality of arc-shaped grooves (5) are provided on the rotating disc (4); a sealing gasket (7) in contact with the top of the circular plate (2) is fixedly installed at the bottom of the rotating disc (4); a rectangular block (10) is fixedly installed on the circumference of the rotating disc (4) and located in the rotating groove (3); one end of the rectangular block (10) extends to the outside; A limiting assembly, the limiting assembly being located in the ventilation pipe (1) and being used to limit the rectangular block (10); A plug-in slot (13), the plug-in slot (13) is provided in the ventilation pipe (1) and is located above the rotating slot (3), a plug-in board (14) is plugged and installed in the plug-in slot (13), a placement slot (15) is provided in the plug-in board (14), an activated carbon filter (16) is provided in the placement slot (15), a sealing gasket (17) is fixedly installed on the top and bottom of the plug-in board (14), and a handle (18) is fixedly installed on one side of the plug-in board (14); A fixing assembly is located in the ventilation pipe (1) and is used to fix the plug board (14).

2. The opening and closing device for a clean water tank vent according to claim 1, characterized in that: The limiting component includes: A sliding groove (8), wherein the sliding groove (8) is opened in the ventilation pipe (1) and is located above the rectangular block (10); a limit block (9) is slidably installed in the sliding groove (8); the bottom end of the limit block (9) passes through the bottom of the sliding groove (8) and extends into the rotating groove (3) and abuts against one side of the rectangular block (10); a spring (11) fixed to the inner wall of the sliding groove (8) is fixedly installed on the top of the limit block (9); one side of the limit block (9) extends to the outside and is fixedly installed with a pulling plate (12).

3. The opening and closing device for a clean water tank vent according to claim 2, characterized in that: The bottom end of the limit block (9) is in an inclined structure, and the cross section of the pulling plate (12) is in an L-shaped structure.

4. The opening and closing device for a clean water tank vent according to claim 1, characterized in that: The fixing assembly includes: A movable groove (19) is provided in the ventilation pipe (1) and is located above the plug board (14); a movable block (20) is slidably installed in the movable groove (19); a spring (21) fixed to the inner wall of the movable groove (19) is fixedly installed on the top of the movable block (20); one end of the movable block (20) extends to the outside and is fixedly installed with a baffle (22); one side of the baffle (22) abuts against the peripheral side of the plug board (14).

5. The opening and closing device for a clean water tank vent according to claim 4, characterized in that: The cross section of the baffle (22) is L-shaped.

6. The opening and closing device for a clean water tank vent according to claim 1, characterized in that: The plurality of arc-shaped grooves 1 (5) and the plurality of arc-shaped grooves 2 (6) are arranged in an alternating manner.

7. The opening and closing device for a clean water tank vent according to claim 1, characterized in that: The diameter of the activated carbon filter (16) is larger than the inner diameter of the ventilation pipe (1).

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