Chassis drainage structure

Abstract

The utility model relates to the technical field of heat pumps, in particular to a chassis drainage structure, which comprises a chassis, second drainage ports, a drainage nozzle, a sealing cover and a sealing device used for sealing the second drainage ports, the second drainage ports are dispersedly arranged on the chassis, drainage holes penetrating through the drainage nozzle are arranged in the drainage nozzle, the drainage nozzle is arranged in the second drainage ports, and the sealing cover is arranged on the chassis. The drainage hole enables the space above the base plate to be communicated with the space below the base plate, the sealing cover is detachably installed on the opening of the drainage nozzle, the sealing device is arranged on the drainage nozzle and seals the gap between the second drainage opening and the outer wall of the drainage nozzle, and the sealing performance of the second drainage opening is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat pumps, and more specifically, to a chassis drainage structure. Background Art

[0002] Depending on the climate in different regions of China, users have different requirements for the use of units, so there are also certain differences in the market for chassis drainage. Due to the higher humidity in the south, the water content in the air is higher than in the north. In addition, the humid climate cycle in the south is longer than that in the north, so the fin heat exchangers of the southern units are more prone to frost. The more frequent the frost, the more water enters the chassis. In addition, the south is mostly high-rise buildings. If drainage holes are added, high-altitude water sprinkling may occur. Therefore, the south tends to prefer centralized drainage. The north has a drier climate, lower temperatures, and more low-rise buildings. Fast drainage is required to prevent water from freezing in the chassis, so the north tends to prefer decentralized drainage. The current traditional heat pump chassis cannot meet the two different needs of the southern and northern markets.

[0003] Patent CN107606771A discloses a chassis drainage structure for an evaporator, comprising a chassis body, the chassis body being provided with a bearing groove, the chassis body being arranged below the evaporator, and the projection of the evaporator on the chassis body being located within the range of the bearing groove, the bearing groove being provided with a drainage hole and at least two drainage ports, the drainage ports being provided with a detachable drainage cover. By providing the drainage ports, when the drainage volume is large and decentralized drainage is required, the condensed water generated by the evaporator can be discharged from the drainage ports, achieving rapid drainage. When the drainage volume is small or centralized drainage is required, the drainage ports are closed with the drainage cover, and the condensed water can be drained from the drainage holes, thereby achieving switching between decentralized and centralized drainage of the chassis. However, in the above scheme, no device is provided to improve the sealing performance of the drainage ports, resulting in insufficient sealing performance. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art in terms of poor sealing performance, provide a chassis drainage structure, and improve the sealing performance of the drainage outlet.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A chassis drainage structure is provided, including a chassis, a second drain outlet, a drain nozzle, a cover and a sealing device for sealing the second drain outlet, the second drain outlets are dispersedly arranged on the chassis, the drain nozzle is provided with a drainage hole passing through the drain nozzle, the drain nozzle is installed in the second drain outlet, the drainage hole connects the space above and below the chassis, the cover is detachably mounted on the opening of the drain nozzle and is located below the second drain outlet, the sealing device is arranged on the drain nozzle and separates the gap between the second drain outlet and the outer wall of the drain nozzle from the bottom of the second drain outlet.

[0007] The chassis drainage structure of the present invention installs the drainage nozzle in the second drainage port, and installs the cover to close the drainage hole. The sealing device improves the sealing of the second drainage port by blocking the gap between the second drainage port and the outer wall of the drainage nozzle, thereby preventing the second drainage port from leaking after the cover is installed.

[0008] Furthermore, the sealing device includes a block and a pressing piece, the block is fixedly provided on the outer wall of the drain nozzle and is located below the second drain outlet, the pressing piece is installed on the drain nozzle and is located above the second drain outlet, the diameter of the block is larger than the diameter of the second drain outlet, the pressing piece is installed on the outer wall of the second drain nozzle and is located above the second drain outlet, the outer diameter of the pressing piece is larger than the diameter of the second drain outlet, and the block and the pressing piece clamp the chassis. The outer diameter of the block is larger than the diameter of the second drain outlet, so that the block can play a role in sealing the second drain outlet. The block and the clamping piece clamp the chassis, which can completely eliminate the gap between the block and the chassis, thereby completely sealing the second drain outlet and improving the sealing of the second drain outlet; at the same time, the block can also realize the limiting effect on the first drain nozzle, preventing the first drain nozzle from sinking into the second drain outlet when the drain nozzle is installed, resulting in the cover being unable to be installed; the outer diameter of the clamping piece is larger than the diameter of the second drain outlet, which can prevent the clamping piece from sinking into the second drain outlet, so that the clamping piece can press the chassis, and also play a role in sealing the second drain outlet, cooperating with the block to achieve double sealing.

[0009] Furthermore, the drain nozzle includes a first drain nozzle and a second drain nozzle arranged in sequence from bottom to top, the first drain nozzle is located below the second drain outlet, the cover is installed on the first drain nozzle, the second drain nozzle passes through the second drain outlet, the block is fixedly arranged on the outer wall of the connection between the first drain nozzle and the second drain nozzle, the outer wall of the second drain nozzle is provided with a second external thread, the pressing member is a nut, and the inner wall of the pressing member is provided with a second internal thread that cooperates with the second external thread. When installing the drain nozzle, the second drain nozzle is inserted into the second drain outlet, the block is abutted against the chassis, the second drain nozzle is passed through the pressing member, and the pressing member is rotated. Through the cooperation of the second external thread and the second internal thread, the pressing member is moved along the second drain nozzle toward the chassis until the pressing member presses the chassis. At this time, the pressing member and the block jointly clamp the chassis, fix the drain nozzle, and block the gap between the second drain outlet and the second drain nozzle from both the upper and lower directions, thereby achieving double sealing and improving the sealing performance of the second drain outlet.

[0010] Furthermore, the outer wall of the first drain nozzle is provided with a first external thread, and the inner wall of the cover is provided with a first internal thread that cooperates with the first external thread. The cover can be installed on the first drain nozzle through threaded engagement by rotating the cover, thereby sealing the opening of the first drain nozzle and closing the second drain opening. The cover can be removed by rotating the cover in the opposite direction, which is simple and labor-saving.

[0011] Furthermore, a first seal is provided between the stopper and the chassis, and a second seal is provided between the pressing member and the chassis. The first seal can improve the airtightness between the stopper and the chassis, thereby improving the sealing performance when the second drain outlet is closed; the second seal can improve the airtightness between the pressing member and the chassis, thereby improving the sealing performance when the second drain outlet is closed.

[0012] Furthermore, the drainage holes include a first drainage hole and a second drainage hole that are interconnected. The first drainage hole extends through the first drainage nozzle, and the second drainage hole extends through the second drainage nozzle. The diameter of the first drainage hole is larger than the diameter of the second drainage hole. The smaller diameter of the second drainage hole increases the flow rate and flow resistance of water passing through the second drainage hole. The larger diameter of the first drainage hole decreases the flow rate and reduces the flow resistance, thereby dispersing the water flow and producing a spraying effect.

[0013] Furthermore, it also includes a first drain port, which is arranged on the chassis. The drain nozzle is installed in the second drain port. When centralized drainage is required, the cover is installed to close the drainage hole, close the second drain port, and drain the water in the chassis from the first drain port in a centralized manner, which is convenient for guiding the discharged water; when dispersed drainage is required, the cover is removed to make the water in the chassis flow out from the first drain port and two or more second drain ports at the same time, so as to achieve rapid drainage; the sealing device improves the sealing performance of the second drain port to prevent the second drain port from leaking even after the cover is installed, so as to ensure that when centralized drainage occurs, the water in the chassis only flows out through the first drain port; centralized drainage and dispersed drainage can be achieved by removing or installing the cover, without the need to frequently remove or install the drain nozzle, and the operation is relatively simple and quick; the degree of dispersion and drainage speed of drainage can be adjusted by changing the number of openings of the second drain port to meet the needs of different working environments.

[0014] Furthermore, the upper surface of the chassis is provided with two or more drainage grooves, and the two or more second drainage openings are respectively provided in the two or more drainage grooves, with the tops of the drainage grooves being higher than the height of the openings of the second drainage nozzles. Water in the chassis is attracted by gravity and collected in the drainage grooves. The tops of the drainage grooves are higher than the height of the openings of the second drainage nozzles, so that water entering the drainage grooves can submerge the openings of the second drainage nozzles and can be discharged smoothly through the nozzles.

[0015] Furthermore, a plurality of cross beams are provided at the bottom of the chassis, which can increase the strength of the chassis.

[0016] Furthermore, the bottom of the chassis is provided with a plurality of feet, the vertical length of the feet being greater than the vertical distance between the bottom of the cover and the chassis, and the feet play a supporting role for the chassis.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] The chassis drainage structure of the utility model: 1. The sealing device improves the sealing of the second drain outlet by blocking the gap between the second drain outlet and the outer wall of the drain nozzle, ensuring that during centralized drainage, the water in the chassis only flows out through the first drain outlet to prevent water leakage; 2. The block and the pressing member clamp the chassis to eliminate the gap between the block and the pressing member and the chassis, and block the gap between the second drain nozzle and the second drain outlet from the upper and lower directions to achieve double sealing and improve the sealing performance of the second drain outlet; 3. A first sealing member and a second sealing member are provided, with good sealing performance and not easy to leak; 4. By disassembling and assembling the cover, the drainage structure can be switched between centralized drainage and decentralized drainage modes; 5. By changing the number of openings of the second drain outlet, the degree of dispersion of drainage and the drainage speed can be adjusted to meet the needs of different working environments; 6. There is no need to frequently disassemble or install the drain nozzle, and the operation is relatively simple and quick; 7. The drain nozzle is fixed to the chassis through the threaded cooperation of the pressing member and the second drain nozzle, which is convenient for installation and disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of the chassis drainage structure of the present utility model;

[0020] Figure 2 This is a schematic structural diagram of the drainage nozzle of the chassis drainage mechanism of the present invention;

[0021] Figure 3 This is an exploded view of the structure of the drainage nozzle of the chassis drainage mechanism of the present invention;

[0022] Figure 4 This is a structural diagram of the chassis of the chassis drainage mechanism of the present invention;

[0023] In the accompanying drawings: 1. chassis; 2. first drain outlet; 3. second drain outlet; 31. drain trough; 4. drain nozzle; 41. first drain nozzle; 411. first sealing member; 42. second drain nozzle; 421. second sealing member; 43. drain hole; 431. first drain hole; 432. second drain hole; 5. cover; 6. sealing device; 61. pressing member; 62. block; 7. crossbeam; 8. base. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with specific embodiments. The accompanying drawings are for illustrative purposes only and are schematic, not actual, representations. They should not be construed as limiting this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted from the drawings.

[0025] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and so on indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0026] Example 1

[0027] like Figures 1 to 4 The figure shows a first embodiment of the chassis drainage structure of the present invention, comprising a chassis 1, a second drain outlet 3, a drain nozzle 4, a cover 5 and a sealing device 6 for sealing the second drain outlet 3. The second drain outlet 3 is arranged on the chassis 1, and the drain nozzle 4 is provided with a drainage hole 43 passing through the drain nozzle 4. The drain nozzle 4 is installed in the second drain outlet 3, and the drainage hole 43 connects the space above and below the chassis 1. The cover 5 is detachably mounted on the opening of the drain nozzle 4 and is located below the second drain outlet 3. The sealing device 6 is provided on the drain nozzle 4 and separates the gap between the second drain outlet 3 and the outer wall of the drain nozzle 4 from the bottom of the second drain outlet 3.

[0028] The chassis 1 drainage structure of the present invention installs the drainage nozzle 4 in the second drainage port 3. When centralized drainage is required, the cover 5 is installed to close the drainage hole 43. The sealing device 6 improves the sealing performance of the second drainage port 3 by blocking the gap between the second drainage port 3 and the outer wall of the drainage nozzle 4, thereby preventing the second drainage port 3 from leaking after the cover 5 is installed.

[0029] It also includes a first drain port 2, which is provided on the chassis 1, and at least two second drain ports 3 are provided. The drain nozzle 4 is installed in the second drain port 3. When centralized drainage is required, the cover 5 is installed to close the drainage hole 43, close the second drain port 3, and discharge the water in the chassis 1 from the first drain port 2 in a centralized manner, so as to facilitate the guidance of the discharged water; when dispersed drainage is required, the cover 5 is removed so that the water in the chassis 1 flows out from the first drain port 2 and two or more second drain ports 3 at the same time, so as to achieve rapid drainage; the sealing device 6 can prevent the second drain port 3 from leaking even after the cover 5 is installed, so as to ensure that when centralized drainage is performed, the water in the chassis 1 only flows out through the first drain port 2; by removing or installing the cover 5, both centralized drainage and dispersed drainage can be achieved, and the drain nozzle 4 does not need to be frequently removed or installed, and the operation is relatively simple and quick; the degree of dispersion of drainage and the drainage speed can be adjusted by changing the number of second drain ports 3 opened to meet the needs of different working environments. In this embodiment, the chassis 1 is a rectangular structure, and five second drain ports 3 are provided on the chassis 1, such as Figure 1 and Figure 4 shown.

[0030] In addition, the drainage speed can be changed by installing drainage nozzles 4 with different diameters of the drainage holes 43 to better meet different work requirements.

[0031] The working principle of the chassis drainage structure of this embodiment is as follows:

[0032] A drainage nozzle 4 with a suitable drainage hole 43 diameter is installed in two or more second drainage outlets 3. In a working environment such as a humid environment in the south that requires centralized drainage, the cover 5 is installed on the drainage nozzle 4 to close the second drainage outlet 3. The sealing device 6 completely blocks the gap between the outer wall of the drainage nozzle 4 and the second drainage outlet 3 to improve the sealing performance, so that the water in the chassis 1 can only be discharged from the first drainage outlet 2, which is convenient for guiding the water flow; in a working environment such as a cold environment in the north that requires rapid drainage, the cover 5 is removed from the drainage nozzle 4, and the water in the chassis 1 can be discharged from the first drainage outlet 2 and the second drainage outlet 3 at the same time, thereby increasing the drainage speed and preventing the chassis 1 from freezing.

[0033] Example 2

[0034] This embodiment is the second embodiment of the chassis drainage structure of the utility model. This embodiment is similar to the first embodiment, except that the sealing device 6 includes a block 62 and a pressing member 61. The block 62 is fixedly provided on the outer wall of the drain nozzle 4 and is located below the second drain outlet 3. The pressing member 61 is installed on the drain nozzle 4 and is located above the second drain outlet 3. The diameter of the block 62 is larger than the diameter of the second drain outlet 3. The pressing member 61 is installed on the outer wall of the second drain nozzle 42 and is located above the second drain outlet 3. The outer diameter of the pressing member 61 is larger than the diameter of the second drain outlet 3. The block 62 and the pressing member 61 clamp the chassis 1. The outer diameter of the stopper 62 is larger than the diameter of the second drain outlet 3, so that the stopper 62 can play a role in blocking the second drain outlet 3. The stopper 62 and the pressing member 61 clamp the chassis 1, which can completely eliminate the gap between the stopper 62 and the chassis 1, thereby completely blocking the second drain outlet 3 and improving the sealing of the second drain outlet 3, ensuring that when the drainage structure is draining centralized water, the second drain outlet 3 does not leak, and the water in the chassis 1 only flows out through the first drain outlet 2; at the same time, the stopper 62 can also achieve a limiting effect on the first drain nozzle 41, preventing the first drain nozzle 41 from sinking into the second drain outlet 3 when the drain nozzle 4 is installed, resulting in the cover 5 being unable to be installed; the outer diameter of the pressing member 61 is larger than the diameter of the second drain outlet 3, which can prevent the pressing member 61 from sinking into the second drain outlet 3, so that the pressing member 61 can press the chassis 1, and at the same time play a role in blocking the second drain outlet 3, cooperating with the stopper 62 to achieve double sealing, such as Figure 2 shown.

[0035] The drain nozzle 4 includes a first drain nozzle 41 and a second drain nozzle 42 arranged in sequence from bottom to top, the first drain nozzle 41 is located below the second drain port 3, the cover 5 is installed on the first drain nozzle 41, the second drain nozzle 42 passes through the second drain port 3, the block 62 is fixedly arranged on the outer wall of the connection between the first drain nozzle 41 and the second drain nozzle 42, the outer wall of the second drain nozzle 42 is provided with a second external thread, the pressing member 61 is a nut, and the inner wall of the pressing member 61 is provided with a second internal thread that matches the second external thread, as shown in FIG. Figure 2 When installing the drain nozzle 4, insert the second drain nozzle 42 into the second drain port 3, make the stopper 62 abut against the chassis 1, make the second drain nozzle 42 pass through the pressing member 61, rotate the pressing member 61, and through the cooperation of the second external thread and the second internal thread, make the pressing member 61 move along the second drain nozzle 42 toward the chassis 1 until the pressing member 61 presses the chassis 1. At this time, the pressing member 61 and the stopper 62 jointly clamp the chassis 1, fix the drain nozzle 4, and block the gap between the second drain port 3 and the second drain nozzle 42 from the upper and lower directions, realizing double sealing, improving the sealing performance of the second drain port 3, and preventing water leakage from the second drain port 3 during centralized drainage.

[0036] The outer wall of the first drain nozzle 41 is provided with a first external thread, and the inner wall of the cover 5 is provided with a first internal thread that mates with the first external thread. By rotating the cover 5, the cover 5 is threadably mounted on the first drain nozzle 41, sealing the opening of the first drain nozzle 41 and closing the second drain port 3 for centralized drainage. By rotating the cover 5 in the opposite direction, the cover 5 can be removed for decentralized drainage, making operation simple and labor-saving.

[0037] In this embodiment, the first drain nozzle 41 and the second drain nozzle 42 are both hollow cylinders, and the stopper 42 is a hexagonal prism structure. When the drain nozzle 4 is installed, it is easy to apply force to the stopper 42; an annular rib is provided on the top of the side of the cover 5, and ribs extending vertically from the annular rib to the bottom of the side of the cover 5 are evenly distributed on the side of the cover 5. The annular rib and the ribs can increase the friction between the human hand and the cover 5, making it easier to disassemble and install the cover 5. Figure 3 shown.

[0038] The working principle of the chassis drainage structure of this embodiment is as follows:

[0039] When installing the drain nozzle 4, insert the second drain nozzle 42 into the second drain port 3 from the bottom of the chassis 1, so that the stopper 42 abuts against the chassis 1, and the pressing piece 61 is put on the second drain nozzle 42, so that the second internal thread in the pressing piece 61 contacts the second external thread on the outer wall of the second drain nozzle 42, and the pressing piece 61 is rotated to move the pressing piece 61 along the second drain nozzle 42 toward the chassis 1 until the pressing piece 61 is tightened. The pressing piece 61 and the stopper 42 both press the chassis 1 and fix the drain nozzle 4 in the second drain port 3. The diameter of the stopper 42 and the outer diameter of the pressing piece 61 are both larger than the diameter of the second drain port 3. The gap between the second drain nozzle 42 and the second drain port 3 is blocked from the upper and lower directions to achieve double sealing, so that the second drain port The upper and lower parts of 3 are connected only through the drainage hole 43, so as to avoid water leakage from the second drainage outlet 3 after the cover 5 is installed; when centralized drainage is required, the cover 5 is put on the first drainage nozzle 41, and the cover 5 is rotated. The cover 5 is installed on the first drainage nozzle 41 by utilizing the cooperation of the first internal thread and the first external thread to block the lower end outlet of the drainage hole 43, and the second drainage outlet 3 is closed. Due to the sealing effect of the block 62 and the pressing member 61 on the second drainage outlet 3, the second drainage outlet 3 will not leak, and the water in the chassis 1 is discharged only through the first drainage outlet 2; when decentralized drainage is required, the cover 5 is rotated in the opposite direction and removed. The drainage hole 43 connects the upper and lower parts of the chassis 1, and the water in the chassis 1 is discharged through the first drainage outlet 2 and the second drainage outlet 3 at the same time.

[0040] Example 3

[0041] This embodiment is the third embodiment of the chassis drainage structure of the present utility model. This embodiment is similar to the second embodiment, except that Figure 3As shown, a first sealing member 411 is provided between the stopper 42 and the chassis 1. The first sealing member 411 improves the airtightness between the stopper 42 and the chassis 1, thereby enhancing the sealing performance when the second drain outlet 3 is closed. A second sealing member 421 is provided between the pressing member 61 and the chassis 1. The second sealing member 421 improves the airtightness between the pressing member 61 and the chassis 1, thereby enhancing the sealing performance when the second drain outlet 3 is closed.

[0042] The first seal 411 and the second seal 421 that can improve the sealing performance of the chassis drainage structure are both applicable to the present invention. The first seal 411 and the second seal 421 listed in this embodiment are not intended to limit the present invention. In this embodiment, the first seal 411 and the second seal 421 are both rubber rings, and the outer diameter of the second drainage nozzle 42 is equal to the inner diameter of the first seal 411 and the second seal 421, and the inner diameter of the first seal 411 and the second seal 421 is equal to the diameter of the second drainage port 3.

[0043] In this embodiment, the pressing member 61 is a plastic structure. Compared with metal structures, plastic structures have good chemical stability, strong corrosion resistance and low cost.

[0044] The drainage holes 43 include a first drainage hole 431 and a second drainage hole 432 that are connected to each other. The first drainage hole 431 passes through the first drainage nozzle 41, and the second drainage hole 432 passes through the second drainage nozzle 42. The diameter of the first drainage hole 431 is larger than that of the second drainage hole 432. The smaller diameter of the second drainage hole 432 increases the flow rate of water passing through the second drainage hole 432 and increases the flow resistance. The larger diameter of the first drainage hole 431 reduces the flow rate of water and reduces the flow resistance, producing a spraying effect and further dispersing the water flow. Figure 3 shown.

[0045] The upper surface of the chassis 1 is provided with two or more drainage grooves 31, with two or more second drainage ports 3 disposed in each of the two or more drainage grooves 31. A second sealing member 421 is disposed at the bottom of the drainage grooves 31, and the top of the drainage grooves 31 is higher than the opening of the second drainage nozzle 42. Water in the chassis 1 is drawn into the drainage grooves 31 by gravity. The top of the drainage grooves 31 is higher than the opening of the second drainage nozzle 42, ensuring that water entering the drainage grooves 31 is submerged above the opening of the second drainage nozzle 42 and can be discharged smoothly through the drainage nozzle 4. The edges of the drainage grooves 31 are rounded.

[0046] The bottom of the chassis 1 is provided with a number of crossbeams 7. The crossbeams 7 can increase the strength of the chassis 1. The bottom of the chassis 1 is also provided with a number of feet 8. The vertical length of the feet 8 is greater than the vertical length of the drain nozzle 4. The feet 8 play a supporting role for the chassis 1. In addition, the feet 8 can ensure a sufficient gap between the drain nozzle 4 and the cover 5 and the ground or other working surface, making it convenient for users to install or remove the cover 5 and to switch between centralized drainage and decentralized drainage. Figure 4 shown.

[0047] The base 8 and the cross beam 7 are both hollow rectangular parallelepiped structures, which can reduce weight and material costs while having high structural strength; the base 8 is perpendicular to the cross beam 7, and the cross beam 7 passes through the base 8, and the cross beam 7 and the base 8 form a mesh structure, further improving the structural strength of the chassis 1. Figure 4 shown.

[0048] The working principle of the chassis drainage structure of this embodiment is as follows:

[0049] When installing the drain nozzle 4, the first seal 411 is located below the second drain outlet 3, the second drain nozzle 42 is passed through the first seal 411 and the second drain outlet 3, the first seal 411 is pressed onto the chassis 1 through the block 42, the second seal 421 is placed at the bottom of the drain groove 31, the second drain nozzle 42 is passed through the second seal 421, the pressing piece 61 is put on the second drain nozzle 42 and tightened, the pressing piece 61 presses the second seal 421 to the bottom of the drain groove 31, and the block 42 also presses the first seal 411, causing the first seal 411 and the second seal 421 to deform, eliminating the gap between the second drain outlet 3 and the block 42 and the pressing piece 61, achieving complete sealing and avoiding water leakage.

[0050] In the specific contents of the above-mentioned specific implementation methods, the various technical features can be combined in any non-contradictory manner. In order to make the description concise, not all possible combinations of the above-mentioned technical features are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0051] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. A person skilled in the art will be able to make other variations or modifications based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A chassis drainage structure, characterized in that: The invention comprises a chassis (1), a second drain outlet (3), a drain nozzle (4), a cover (5) and a sealing device (6) for sealing the second drain outlet (3); the second drain outlet (3) is arranged on the chassis (1); the drain nozzle (4) is provided with a drain hole (43) penetrating the drain nozzle (4); the drain nozzle (4) is installed in the second drain outlet (3); the drain hole (43) connects the space above and below the chassis (1); the cover (5) is detachably mounted on the opening of the drain nozzle (4) and is located below the second drain outlet (3); the sealing device (6) is arranged on the drain nozzle (4) and separates the gap between the second drain outlet (3) and the outer wall of the drain nozzle (4) from the bottom of the second drain outlet (3).

2. The chassis drainage structure according to claim 1, characterized in that: The sealing device (6) comprises a stopper (62) and a pressing member (61); the stopper (62) is fixedly arranged on the outer wall of the drain nozzle (4) and is located below the second drain outlet (3); the pressing member (61) is mounted on the drain nozzle (4) and is located above the second drain outlet (3); the diameter of the stopper (62) is greater than the diameter of the second drain outlet (3); the pressing member (61) is mounted on the outer wall of the drain nozzle (4) and is located above the second drain outlet (3); the outer diameter of the pressing member (61) is greater than the diameter of the second drain outlet (3); the stopper (62) and the pressing member (61) clamp the chassis (1).

3. The chassis drainage structure according to claim 2, characterized in that: The drain nozzle (4) comprises a first drain nozzle (41) and a second drain nozzle (42) which are arranged in sequence from bottom to top, the first drain nozzle (41) is located below the second drain port (3), the cover (5) is mounted on the first drain nozzle (41), the second drain nozzle (42) passes through the second drain port (3), the block (62) is fixedly arranged on the outer wall of the connection between the first drain nozzle (41) and the second drain nozzle (42), the outer wall of the second drain nozzle (42) is provided with a second external thread, the pressing member (61) is a nut, and the inner wall of the pressing member (61) is provided with a second internal thread which matches the second external thread.

4. The chassis drainage structure according to claim 3, characterized in that: The outer wall of the first drain nozzle (41) is provided with a first external thread, and the inner wall of the sealing cover (5) is provided with a first internal thread matching the first external thread.

5. The chassis drainage structure according to claim 4, characterized in that: A first sealing member (411) is provided between the stopper (62) and the chassis (1), and a second sealing member (421) is provided between the pressing member (61) and the chassis (1).

6. The chassis drainage structure according to claim 3, characterized in that: The drainage hole (43) comprises a first drainage hole (431) and a second drainage hole (432) which are connected to each other, the first drainage hole (431) passes through the first drainage nozzle (41), the second drainage hole (432) passes through the second drainage nozzle (42), and the diameter of the first drainage hole (431) is larger than the diameter of the second drainage hole (432).

7. The undercarriage drainage structure according to any one of claims 1 to 6, characterized in that: It also includes a first drain port (2), which is arranged on the bottom plate (1), and at least two second drain ports (3) are provided.

8. The undercarriage drainage structure according to any one of claims 3 to 6, characterized in that: The upper surface of the chassis (1) is provided with two or more drainage grooves (31), and the two or more second drainage ports (3) are respectively arranged in the two or more drainage grooves (31), and the top of the drainage groove (31) is higher than the height of the opening of the second drainage nozzle (42).

9. The chassis drainage structure according to claim 1, characterized in that: A plurality of cross beams (7) are provided at the bottom of the chassis (1).

10. The chassis drainage structure according to claim 1, characterized in that: The bottom of the chassis (1) is provided with a plurality of feet (8), and the vertical height of the feet (8) is greater than the vertical distance between the bottom of the cover (5) and the chassis (1).

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