Power line sealing structure of sewage lifter

Abstract

The utility model discloses a power line sealing structure of a sewage lifter, and the structure comprises a box body, the side wall of the box body is provided with a mounting hole, the mounting hole is provided with a power line in a penetrating manner, and the power line is provided with a plug; the fixing part comprises a sleeve, the sleeve is arranged to be of a hollow pipeline structure, the sleeve is arranged in the mounting hole in a penetrating mode, the sleeve is connected with the box body in a sealed mode, and the power line is arranged in the sleeve in a penetrating mode; the sealing part comprises a sealing piece and a pressing ring, the sealing piece is arranged at the outward end of the sleeve, a through hole is formed in the sealing piece, a slot is obliquely formed in the circumferential direction of the through hole, the pressing ring is connected with the sealing piece in a pressing mode, so that the sealing piece is deformed to be connected with the sleeve in a sealing mode, and the pressing ring is fixedly connected with the sleeve; the inner diameter of the sleeve and the minimum inner diameter of the pressing ring are both larger than the maximum diameter of the plug, and the diameter of the through hole is smaller than the diameter of the power line.

Description

Technical Field

[0001] This application relates to the field of sealing technology, and in particular to a power cord sealing structure for a sewage lifting station. Background Technology

[0002] A wastewater lifting station is a drainage device used in basements, ships, vehicles, and other locations far from drainage risers or with poor drainage conditions. It collects and treats domestic wastewater from toilets. It is typically a complete system that can solve public health problems in certain special locations.

[0003] In wastewater lifting stations, the power cord for the water pump runs through the side wall of the water tank. When the water level in the tank exceeds the location of the power cord, water will leak out from the gap between the power cord and the tank body, thus requiring the power cord to be sealed. However, most wastewater lifting stations on the market currently use an integrated seal between the power cord and the water tank. During later maintenance, it is necessary to separate the power cord from the water pump and then pull out the power cord, which is cumbersome and affects work efficiency. Utility Model Content

[0004] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a power cord sealing structure for a sewage lifting station, which allows the power cord, along with the plug, to pass directly through the pressure ring and sleeve during later maintenance, eliminating the need to separate the power cord from the water pump. This structure is simple, easy to operate, reduces labor intensity, and improves work efficiency.

[0005] According to an embodiment of this application, the power cord sealing structure of a sewage lifting device includes: a housing with a mounting hole on the side wall, through which a power cord passes and has a plug; a fixing part including a sleeve, the sleeve being a hollow pipe structure, the sleeve passing through the mounting hole and sealed to the housing, the power cord passing through the sleeve; and a sealing part including a sealing element and a pressure ring, the sealing element being located at the outward end of the sleeve, the sealing element having a through hole with a circumferentially inclined slit, the pressure ring pressing against the sealing element to deform it for a sealed connection with the sleeve, the pressure ring being fixedly connected to the sleeve; wherein the inner diameter of the sleeve and the minimum inner diameter of the pressure ring are both greater than the maximum diameter of the plug, and the diameter of the through hole is smaller than the diameter of the power cord.

[0006] The power cord sealing structure of the sewage lifting device according to the embodiments of this application has at least the following beneficial effects: By making the inner diameter of the sleeve and the minimum inner diameter of the pressure ring larger than the maximum diameter of the plug, the power cord and plug can be directly passed through the pressure ring and sleeve during later maintenance, without the need to separate the power cord from the water pump. The structure is simple, the operation is convenient, the labor intensity is reduced, and the work efficiency is improved. The diameter of the through hole is set to be smaller than the diameter of the power cord, thereby ensuring the sealing performance between the seal and the power cord. By setting an opening at an angle in the circumference of the through hole, it is not only convenient to remove the power cord from the seal through the opening, making disassembly and assembly simple and improving work efficiency, but also allows the seal to close the opening when it is squeezed, thereby ensuring the sealing performance of the seal.

[0007] According to some embodiments of this application, the sleeve includes a first tube section and a second tube section, the inner diameter of the first tube section is larger than the inner diameter of the second tube section, the sealing element is disposed in the first tube section, and the second tube section passes through the mounting hole and is sealed to the housing.

[0008] According to some embodiments of this application, the seal includes a first sealing gasket and a second sealing gasket, wherein the first sealing gasket and the second sealing gasket are stacked along the axial direction of the first tube portion.

[0009] According to some embodiments of this application, the sealing part further includes gaskets, which are respectively disposed on both sides of the sealing member, and the pressure ring presses the gaskets to deform the sealing member.

[0010] According to some embodiments of this application, the gasket is provided with an opening.

[0011] According to some embodiments of this application, a sealing ring is provided between the second tube and the housing.

[0012] According to some embodiments of this application, the first tube is provided with an external thread, the pressure ring is provided with an internal thread, and the external thread and the internal thread are connected in a mating manner.

[0013] According to some embodiments of this application, the fixing part further includes a nut, which is disposed on the second tube portion, and the nut presses against the housing and is threadedly connected to the second tube portion.

[0014] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0015] The present application will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0016] Figure 1This is a schematic diagram of the power cord sealing structure of the sewage lifting device according to an embodiment of this application;

[0017] Figure 2 This is a partial structural schematic diagram of the power cord sealing structure of the sewage lifting device according to an embodiment of this application;

[0018] Figure 3 This is a schematic diagram of the sleeve structure in the power cord sealing structure of the sewage lifting device according to an embodiment of this application;

[0019] Figure 4 This is a schematic diagram of the sealing element in the power cord sealing structure of the sewage lifting device according to an embodiment of this application.

[0020] Figure label:

[0021] Box body 100; power cord 110; plug 120; sleeve 210; first tube 220; second tube 230; mating surface 240; sealing ring 250; nut 260; first sealing gasket 310; second sealing gasket 320; pressure ring 330; through hole 340; slit 350; protrusion 360; first gasket 370; second gasket 380; opening 390. Detailed Implementation

[0022] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0023] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0024] In the description of this application, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0025] In the description of this application, unless otherwise expressly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly. Those skilled in the art can reasonably determine the specific meaning of these terms in this application based on the specific content of the technical solution. In the description of this application, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples. In the description of this specification, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0026] Reference Figures 1 to 4 This application provides a sealing structure for the power cord 110 of a sewage lifting station, comprising: a housing 100 with a mounting hole on the side wall through which the power cord 110 passes and has a plug 120; a fixing part including a sleeve 210, which is a hollow pipe structure, passing through the mounting hole and sealed to the housing 100, with the power cord 110 passing through the sleeve 210; and a sealing part including a sealing element and... A pressure ring 330 is provided at the outer end of the sleeve 210, and the sealing element is provided with a through hole 340. The through hole 340 is circumferentially inclined with a slit 350. The pressure ring 330 presses against the sealing element, causing the sealing element to deform and seal with the sleeve 210. The pressure ring 330 is fixedly connected to the sleeve 210. The inner diameter of the sleeve 210 and the minimum inner diameter of the pressure ring 330 are both greater than the maximum diameter of the plug 120, and the diameter of the through hole 340 is smaller than the diameter of the power cord 110.

[0027] By making the inner diameter of the sleeve 210 and the minimum inner diameter of the pressure ring 330 larger than the maximum diameter of the plug 120, the power cord 110, along with the plug 120, can be directly passed through the pressure ring 330 and the sleeve 210 during later maintenance, without the need to separate the power cord 110 from the water pump. This simplifies the structure, makes operation easier, reduces labor intensity, and improves work efficiency. The diameter of the through hole 340 is set to be smaller than the diameter of the power cord 110, thus ensuring the sealing performance between the seal and the power cord 110. By providing a circumferentially inclined slit 350 in the through hole 340, it is not only convenient to remove the power cord 110 from the seal through the slit 350, simplifying disassembly and assembly and improving work efficiency, but it also allows the seal to close the slit 350 when compressed, thus ensuring the sealing performance of the seal.

[0028] Reference Figures 1 to 3 Specifically, the sleeve 210 includes a first tube portion 220 and a second tube portion 230. The inner diameter of the first tube portion 220 is larger than the inner diameter of the second tube portion 230. A sealing element is disposed in the first tube portion 220, and the second tube portion 230 passes through the mounting hole and is sealed to the housing 100. By setting the inner diameter of the first tube portion 220 to be larger than the inner diameter of the second tube portion 230, an abutment surface 240 is formed between the first tube portion 220 and the second tube portion 230. The sealing element is disposed above the abutment surface 240, so that one side of the sealing element is restricted by the abutment surface 240, allowing the pressure ring 330 to firmly press against the sealing element, thereby ensuring good sealing performance.

[0029] Reference Figure 1 , Figure 2 and Figure 4 The sealing element includes a first sealing gasket 310 and a second sealing gasket 320, which are stacked along the axial direction of the first pipe portion 220. The sealing effect is enhanced by the cooperation of the first sealing gasket 310 and the second sealing gasket 320. Furthermore, the sidewalls of both the first sealing gasket 310 and the second sealing gasket 320 are provided with multiple protrusions 360, which deform to form a sealing connection with the first pipe portion 220, thereby improving the sealing performance.

[0030] Reference Figure 1 and Figure 2In some embodiments of this application, the sealing portion further includes a first gasket 370 and a second gasket 380, which are respectively disposed on both sides of the sealing element. A pressure ring 330 presses against the first gasket 370 to deform the sealing element. Both the first gasket 370 and the second gasket 380 are rigid. During installation, the second gasket 380 is first embedded into the first tube portion 220, making it abut against the contact surface 240. Then, the second sealing gasket 320 and the first sealing gasket 310 are sequentially placed. Finally, the first gasket 370 is placed on the side of the first sealing gasket 310 away from the second sealing gasket 320, and the pressure ring 330 presses against the first gasket 370, causing the first sealing gasket 310 and the second sealing gasket 320 to deform under the interaction of the first gasket 370 and the second gasket 380, thereby achieving a seal. Because the inner diameter of the second tube portion 230 is large, the middle part of the second sealing gasket 320 will be recessed towards one end of the second tube portion 230 after deformation, resulting in poor sealing effect. Therefore, this application sets the second gasket 380 on the side of the second sealing gasket 320 close to the abutment surface 240. At this time, the second gasket 380 can be used to restrict the second sealing gasket 320, preventing the second sealing gasket 320 from extending into the second tube portion 230 due to deformation and affecting the sealing effect, thereby improving the sealing performance. Similarly, the first gasket 370 restricts the first sealing gasket 310, thereby improving the sealing performance.

[0031] The first gasket 370 and the second gasket 380 are both provided with an opening 390, so that the power cord 110 can be taken out or inserted through the opening 390, which facilitates the disassembly and assembly of the first gasket 370, the second gasket 380 and the power cord 110, improves the work efficiency during maintenance and reduces maintenance costs.

[0032] It is conceivable that the first tube section 220 is provided with external threads, and the pressure ring 330 is provided with internal threads, with the external threads and internal threads engaging for connection. By adopting the above structure, the pressure ring 330 and the first tube section 220 are connected by threads, which not only facilitates the assembly and disassembly of the pressure ring 330 and the first tube section 220 and makes maintenance convenient, but also makes the connection more stable, ensuring the safety and reliability of the equipment.

[0033] It should be noted that the pressure ring 330 and the first tube 220 can also be connected by screws. That is, both the pressure ring 330 and the first tube 220 are provided with connecting flanges, and screws are then passed through the connecting flanges of the two to achieve the connection between the pressure ring 330 and the first tube 220.

[0034] Reference Figure 1 and Figure 2In this embodiment, a sealing ring 250 is provided between the second pipe section 230 and the housing 100, thereby achieving a seal between the second pipe section 230 and the housing 100, preventing water inside the housing 100 from leaking between the second pipe section 230 and the housing 100, and improving the sealing performance. It is easily understood that the fixing part also includes a nut 260, which is disposed on the second pipe section 230, presses against the housing 100, and is threadedly connected to the second pipe section 230. By connecting the nut 260 to the second pipe section 230, the sleeve 210 can be firmly fixed to the housing 100, improving the safety and reliability of the equipment. Furthermore, by using the nut 260 to connect to the second pipe section 230, the position of the nut 260 can be adjusted to accommodate housings 100 of different thicknesses, expanding the applicability range.

[0035] It should be noted that the second tube 230 and the housing 100 can also be connected by threads. In this case, there are certain requirements for the thickness of the housing 100, so that the mounting hole wall has a longer thread, thereby ensuring a stable connection between the second tube 230 and the housing 100. Those skilled in the art can make reasonable choices regarding the connection method between the second tube 230 and the housing 100 according to the actual situation, and this application does not impose any restrictions on this.

[0036] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

Claims

1. A sealing structure for the power cord of a sewage lifting station, characterized in that, include: The enclosure has mounting holes on its side walls, through which a power cord passes, and the power cord is equipped with a plug; The fixing part includes a sleeve, which is configured as a hollow pipe structure. The sleeve passes through the mounting hole and is sealed to the housing. The power cord passes through the sleeve. The sealing part includes a sealing element and a pressure ring. The sealing element is disposed at the outward end of the sleeve. The sealing element has a through hole. The through hole is circumferentially inclined with a slit. The pressure ring presses against the sealing element, causing the sealing element to deform and seal with the sleeve. The pressure ring is fixedly connected to the sleeve. The inner diameter of the sleeve and the minimum inner diameter of the pressure ring are both greater than the maximum diameter of the plug, and the diameter of the through hole is smaller than the diameter of the power cord.

2. The power cord sealing structure of the sewage lifting station according to claim 1, characterized in that, The sleeve includes a first tube section and a second tube section. The inner diameter of the first tube section is larger than the inner diameter of the second tube section. The sealing element is disposed on the first tube section, and the second tube section passes through the mounting hole and is sealed to the housing.

3. The power cord sealing structure of the sewage lifting station according to claim 2, characterized in that, The sealing element includes a first sealing gasket and a second sealing gasket, which are stacked together along the axial direction of the first tube.

4. The power cord sealing structure of the sewage lifting station according to claim 2, characterized in that, The sealing part further includes a first gasket and a second gasket, which are respectively disposed on both sides of the sealing element. The pressure ring presses against the first gasket to deform the sealing element.

5. The power cord sealing structure of the sewage lifting station according to claim 4, characterized in that, Both the first gasket and the second gasket have openings.

6. The power cord sealing structure of the sewage lifting station according to claim 2, characterized in that, The first tube section is provided with an external thread, and the pressure ring is provided with an internal thread. The external thread and the internal thread are connected in a mating manner.

7. The power cord sealing structure of the sewage lifting station according to claim 2, characterized in that, A sealing ring is provided between the second tube and the housing.

8. The power cord sealing structure of the sewage lifting station according to claim 7, characterized in that, The fixing part also includes a nut, which is disposed on the second tube and presses against the housing and is threadedly connected to the second tube.

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