An oil filtering device suitable for an outdoor escalator foundation pit

Abstract

The utility model discloses an oil filter device suitable for outdoor automatic escalator foundation pit, including connecting pipe, filter piece, mounting seat, and the water outlet of connecting pipe one end is connected with foundation pit, and the other end is connected with mounting seat, be equipped with the via hole that communicates with the water outlet on the mounting seat, and the mounting seat one end is tightly encased in the outside of connecting pipe, and the other end is equipped with the baffle, is equipped with a plurality of through -holes that communicate with the via hole on the baffle, and the filter piece is installed in the via hole and is located between the baffle and connecting pipe, the via hole inner wall is equipped with annular groove, and the filter piece is circular and can embed annular groove and is closely connected with the inner wall of annular groove in outer edge, and the filter piece is used for filtering oil. Can realize to the filtration of the oil slick in foundation pit, avoids the oil slick and is arranged into the water collecting well.

Description

Technical Field

[0001] This utility model belongs to the technical field of escalator accessories, specifically relating to an oil filtration device suitable for outdoor escalator pits. Background Technology

[0002] Currently, the bottom cladding of outdoor escalators has a mesh structure. Rainwater entering the escalator passes through the mesh into the escalator pit, preventing flooding. Water in the pit is then drained into a collection well via pre-buried pipes, where pumps automatically discharge the water into the municipal stormwater network. Typically, escalator pit drainage is only used to remove water from the pit to prevent flooding. However, escalator oil can enter the pit through rainwater and be discharged into the municipal stormwater network via the collection well, posing an environmental risk of exceeding petroleum pollutant emission limits. For example, during the rainy season, large amounts of rainwater splashing or umbrella residue from passengers can enter the escalator, carrying away the lubricating oil. This oil can then enter the pit through the mesh at the bottom of the escalator or the oil-water separator in the lower machine room, and be discharged into the municipal stormwater network via the collection well, significantly impacting the user's public image. Cleaning staff use water to wash away accumulated dust and debris from the escalator steps. This wastewater enters the escalator's interior, carrying away the lubricating oil. The oil flows through the mesh at the bottom of the escalator or the oil-water separator in the lower machine room into the pit, and then drains into the municipal stormwater network via a collection well. During maintenance, if accumulated oil in the lower machine room is not promptly cleaned, excess oil overflows from the oil-water separator and enters the pit, draining into the municipal stormwater network via the collection well. Structural seepage within the escalator pit can also carry oil from the pit into the collection well, ultimately draining into the municipal stormwater network.

[0003] To prevent the oil in the sump from flowing into the municipal stormwater drainage system, it is necessary to regularly clean the oil from the sump. This cleaning is extremely difficult and requires a huge amount of manpower and resources. In addition, the sump is a confined space, and there is a risk of personal injury when working in it.

[0004] Therefore, a new technology is needed to solve the problem of how to prevent engine oil from entering the water collection well in the existing technology for outdoor escalator pits. Utility Model Content

[0005] To address the aforementioned problems in the prior art, this utility model provides an oil filtration device suitable for outdoor escalator pits, which can effectively prevent machine oil in outdoor escalator pits from entering the water collection well, and has a simple structure.

[0006] The present invention adopts the following technical solution:

[0007] An oil filtration device suitable for outdoor escalator pits includes a connecting pipe, a filter element, and a mounting base. One end of the connecting pipe is connected to the outlet of the pit, and the other end is connected to the mounting base.

[0008] The mounting base is provided with a through hole communicating with the water outlet. One end of the mounting base is tightly fitted onto the outside of the connecting pipe, and the other end is provided with a baffle. The baffle is provided with several through holes communicating with the through hole. The filter element is installed in the through hole and located between the baffle and the connecting pipe.

[0009] The inner wall of the through hole is provided with an annular groove. The filter element is circular and its outer edge can be embedded in the annular groove and tightly connected to the inner wall of the annular groove. The filter element is used to filter oil.

[0010] As a further improvement to the technical solution of this utility model, a portion of the surface of the baffle near the connecting pipe forms a sidewall of the annular groove, and the filter element is fixed in contact with the baffle.

[0011] As a further improvement to the technical solution of this utility model, the mounting base further includes a connecting sleeve and a cap. One end of the connecting sleeve is fitted onto the outside of the connecting pipe. The cap has a first central hole. One end of the cap is fitted onto the end of the connecting sleeve away from the connecting pipe, and the other end has an annular stop protruding from the inner wall of the first central hole. The baffle and the filter element are both located between the connecting sleeve and the stop. The baffle and the stop are abutted and fixed, and the filter element and the connecting sleeve are abutted and fixed. The end face of the connecting sleeve forms the other side wall of the annular groove.

[0012] As a further improvement to the technical solution of this utility model, the outer diameters of the baffle and the filter element are both adapted to the aperture of the first central hole.

[0013] As a further improvement to the technical solution of this utility model, the connecting sleeve is provided with a stepped hole, and the stepped surface in the stepped hole abuts against the end face of the connecting pipe; the stepped hole includes a second central hole and a third central hole connected in sequence, the diameter of the second central hole is smaller than the diameter of the third central hole, the third central hole is adapted to the outer diameter of the connecting pipe, and each of the through holes is connected to the connecting pipe through the second central hole.

[0014] As a further improvement to the technical solution of this utility model, the diameter of the second central hole is equal to the inner diameter of the stop block and smaller than the diameter of the connecting pipe.

[0015] As a further improvement to the technical solution of this utility model, the connecting sleeve includes a first section and a second section that are fixedly connected in sequence, the third center hole is located on the second section, the second center hole is located on the first section, and a connecting part is provided on the outer side of the first section at the end away from the second section. The cap is fitted onto the connecting part and is threadedly connected to the connecting part.

[0016] As a further improvement to the technical solution of this utility model, the outer diameter of the cap is equal to the outer diameter of the connecting tube, and the outer diameter of the connecting part is equal to the inner diameter of the connecting tube.

[0017] As a further improvement to the technical solution of this utility model, the filter element is filter cotton.

[0018] As a further improvement to the technical solution of this utility model, the baffle is a filter screen.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] This proposed oil filtration device for outdoor escalator pits features a simple structure and is easy to install and use. By installing a connecting pipe at the outlet and a mounting base with a filter element at the outlet end of the connecting pipe, it effectively prevents machine oil from entering the sump and being discharged into the municipal stormwater network, thus avoiding the environmental risk of exceeding limits for petroleum pollutants. Furthermore, the device provides significant filtration, ensuring that the discharged water meets standards. After installation, there is no need for regular cleaning of the sump, greatly reducing labor costs. Additionally, the sump is a confined space, minimizing the risk of personal injury from working in it. Attached Figure Description

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0022] Figure 1 This is an isometric view of the overall structure of this utility model;

[0023] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0024] Figure 3 yes Figure 2 Enlarged view of the structure of part A in the middle.

[0025] Figure label:

[0026] 1-Connecting pipe;

[0027] 2-Cap; 21-Stop;

[0028] 3-Filter element;

[0029] 4-Connecting sleeve; 41-First section; 411-Second center hole; 42-Second section; 421-Third center hole;

[0030] 5-Baffle. Detailed Implementation

[0031] The following will provide a clear and complete description of the concept, specific structure, and technical effects of this utility model in conjunction with the embodiments and accompanying drawings, so as to fully understand the purpose, solution, and effects of this utility model. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The same reference numerals used throughout the drawings indicate the same or similar parts.

[0032] It should be noted that, unless otherwise specified, when a feature is referred to as "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or it can be indirectly fixed or connected to the other feature. Furthermore, the descriptions of "upper," "lower," "left," and "right" used in this utility model are only relative to the relative positional relationships of the various components of this utility model in the accompanying drawings.

[0033] Reference Figures 1 to 3 An oil filtration device suitable for outdoor escalator pits includes a connecting pipe 1, a filter element 3, and a mounting base. One end of the connecting pipe 1 is connected to the outlet of the pit, and the other end is detachably fixed to the mounting base. The connecting pipe 1 can be made of PVC water pipe. The oil filtration device can be fixed in a pre-reserved drainage hole in the escalator pit using quick-drying cement, or connected to a drainage pipe at the drainage hole via a water pipe connector. The mounting base has a through hole communicating with the outlet. One end of the mounting base is tightly fitted onto the connecting pipe 1, and the other end has a baffle 5. The baffle 5 has several through holes communicating with the through hole. The filter element 3 is installed in the through hole and located between the baffle 5 and the connecting pipe 1. The inner wall of the through hole has an annular groove. The filter element 3 is circular, and its outer edge can be embedded in the annular groove and tightly connected to the inner wall of the annular groove. The filter element 3 is used to filter oil, blocking oil from passing through and preventing oil sludge in the pit from being discharged into the collection well through the outlet. After installation and use, the water quality in the collection well is good, with no obvious floating oil. It can filter the floating oil in the foundation pit and prevent the floating oil from being discharged into the collection well.

[0034] Since escalator oil can enter the escalator pit through rainwater, the oil filtration device for outdoor escalator pits described in this solution effectively prevents oil from entering the sump and being discharged into the municipal stormwater network, thus avoiding the environmental risk of exceeding petroleum pollutant discharge limits. This is achieved by installing a connecting pipe 1 at the outlet and a mounting base with a filter element 3 at the outlet end of the connecting pipe 1. Furthermore, the device has a significant filtration effect, ensuring that the water quality meets standards. After installing this filter, there is no need to regularly clean the floating oil in the sump, greatly reducing the labor costs associated with cleaning the sump. Additionally, the sump is a confined space, avoiding the risk of personal injury from working in the sump.

[0035] Specifically, a portion of the surface of the baffle 5 near the connecting pipe 1 forms a sidewall of the annular groove, and the filter element 3 is fixed in contact with the baffle 5.

[0036] Specifically, the mounting base further includes a connecting sleeve 4 and a cap 2. One end of the connecting sleeve 4 is fitted over the connecting pipe 1. The cap 2 has a first central hole. One end of the cap 2 is fitted onto the connecting sleeve 4 at the end away from the connecting pipe 1, and the other end has an annular stop 21 protruding from the inner wall of the first central hole. The baffle 5 and the filter element 3 are both located between the connecting sleeve 4 and the stop 21. The baffle 5 and the stop 21 are abutted and fixed, and the filter element 3 and the connecting sleeve 4 are abutted and fixed. The end face of the connecting sleeve 4 forms the other side wall of the annular groove.

[0037] Specifically, the outer diameters of the baffle 5 and the filter element 3 are both adapted to the diameter of the first central hole.

[0038] Specifically, the connecting sleeve 4 is provided with a stepped hole, and the stepped surface in the stepped hole abuts against the end face of the connecting pipe 1; the stepped hole includes a second central hole 411 and a third central hole 421 connected in sequence, the diameter of the second central hole 411 is smaller than the diameter of the third central hole 421, the third central hole 421 is adapted to the outer diameter of the connecting pipe 1, and each of the through holes is connected to the connecting pipe 1 through the second central hole 411.

[0039] Specifically, the diameter of the second central hole 411 is equal to the inner diameter of the stop 21 and smaller than the diameter of the connecting pipe 1.

[0040] Specifically, the connecting sleeve 4 includes a first section 41 and a second section 42 that are fixedly connected in sequence. The third center hole 421 is located on the second section 42, and the second center hole 411 is located on the first section 41. The outer side of the first section 41 is provided with a connecting part at the end away from the second section 42. The connecting part is provided with external threads, and the inner side of the cap 2 is provided with internal threads. The cap 2 is fitted onto the connecting part and is threadedly connected to the connecting part.

[0041] Specifically, the outer diameter of the cap 2 is equal to the outer diameter of the connecting pipe 1, and the outer diameter of the connecting part is equal to the inner diameter of the connecting pipe 1.

[0042] Specifically, the filter element 3 is preferably filter cotton, which can absorb floating oil, and the baffle 5 is preferably a filter screen, which is used to restrict the movement of the filter element 3 and prevent the filter element 3 from being washed away by the water flow. The water pipe, connecting sleeve 4, filter cotton, and cap 2 are processed according to the required dimensions. The connecting sleeve 4 can be made of PVC material. The connecting sleeve 4 and the connecting pipe 1 are glued together with PVC glue. Then, the filter cotton and baffle 5 are placed at the end of the connecting sleeve 4 or inside the cap 2. Finally, the cap 2 is tightened at the end of the connecting sleeve 4, thereby fixing the filter cotton and baffle 5. The oil filtration device suitable for outdoor escalator pits can be assembled in this scheme. Afterwards, the device can be fixed in the reserved drainage hole of the escalator pit with quick-drying cement to achieve oil filtration in the pit drainage hole. A PVC ball valve can be installed in the middle of the connecting pipe 1. A socket-type PVC ball valve can be used and fixed in the middle of the connecting pipe 1 with PVC glue. This PVC ball valve can realize the function of closing / opening the drainage. When replacing the filter cotton, the drainage function can be closed to prevent floating oil from being discharged into the water collection well.

[0043] Other aspects of the oil filtration device for outdoor escalator pits described in this utility model are found in the prior art and will not be repeated here.

[0044] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. An oil filtration device suitable for outdoor escalator pits, characterized in that: It includes a connecting pipe, a filter element, and a mounting base. One end of the connecting pipe is connected to the outlet of the foundation pit, and the other end is connected to the mounting base. The mounting base is provided with a through hole communicating with the water outlet. One end of the mounting base is tightly fitted onto the outside of the connecting pipe, and the other end is provided with a baffle. The baffle is provided with several through holes communicating with the through hole. The filter element is installed in the through hole and located between the baffle and the connecting pipe. The inner wall of the through hole is provided with an annular groove. The filter element is circular and its outer edge can be embedded in the annular groove and tightly connected to the inner wall of the annular groove. The filter element is used to filter oil.

2. The oil filtration device for outdoor escalator pits according to claim 1, characterized in that: The portion of the surface of the baffle near the connecting pipe forms a sidewall of the annular groove, and the filter element is fixed in contact with the baffle.

3. The oil filtration device for outdoor escalator pits according to claim 2, characterized in that: The mounting base also includes a connecting sleeve and a cap. One end of the connecting sleeve is fitted over the connecting tube. The cap has a first central hole. One end of the cap is fitted onto the connecting sleeve at the end away from the connecting tube, and the other end has an annular stop protruding from the inner wall of the first central hole. The baffle and the filter element are both located between the connecting sleeve and the stop. The baffle and the stop are abutted and fixed, and the filter element and the connecting sleeve are abutted and fixed. The end face of the connecting sleeve forms the other side wall of the annular groove.

4. The oil filtration device for outdoor escalator pits according to claim 3, characterized in that: The outer diameters of the baffle and the filter element are both adapted to the diameter of the first central hole.

5. The oil filtration device for outdoor escalator pits according to claim 3, characterized in that: The connecting sleeve is provided with a stepped hole, and the stepped surface in the stepped hole abuts against the end face of the connecting pipe; the stepped hole includes a second central hole and a third central hole connected in sequence, the diameter of the second central hole is smaller than the diameter of the third central hole, the third central hole is adapted to the outer diameter of the connecting pipe, and each of the through holes is connected to the connecting pipe through the second central hole.

6. The oil filtration device for outdoor escalator pits according to claim 5, characterized in that: The diameter of the second central hole is equal to the inner diameter of the stop block and smaller than the diameter of the connecting pipe.

7. The oil filtration device for outdoor escalator pits according to claim 6, characterized in that: The connecting sleeve includes a first section and a second section that are fixedly connected in sequence. The third center hole is located on the second section, and the second center hole is located on the first section. The outer side of the first section has a connecting part at the end away from the second section. The cap is fitted onto the connecting part and is threadedly connected to the connecting part.

8. The oil filtration device for outdoor escalator pits according to claim 7, characterized in that: The outer diameter of the cap is equal to the outer diameter of the connecting tube, and the outer diameter of the connecting part is equal to the inner diameter of the connecting tube.

9. The oil filtration device for outdoor escalator pits according to claim 1, characterized in that: The filter element is filter cotton.

10. The oil filtration device for outdoor escalator pits according to claim 1, characterized in that: The baffle is a filter screen.

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