Peculiar smell preventing device for pipeline

Abstract

The utility model discloses a pipeline peculiar smell prevention device, which relates to the technical field of sewer pipelines and comprises a carrier pipe and a flexible conical barrel, the carrier pipe is arranged in the sewer pipeline, and the outer wall of the carrier pipe and the inner wall of the sewer pipeline are in a sealed state; the flexible conical barrel is provided with a large-diameter open end and a small-diameter closed end, the large-diameter open end abuts against the inner wall of the carrier pipe in a sealed state in the radial direction, and the large-diameter open end is installed on the carrier pipe in a local fixing mode, so that the large-diameter open end is divided into a limiting part and a free part in the annular direction. The large-diameter open end of the flexible conical barrel is locally fixed, and the limiting part and the free part are created, so that when water flow flowing to the small-diameter closed end impacts, the free part is easily pushed away, and a smooth flow channel is formed; when no water flow or reverse peculiar smell airflow exists, the flexible conical barrel naturally rebounds by means of self elasticity and hydrostatic pressure and is tightly attached to the inner wall of the carrier pipe, reliable sealing is achieved, and reverse leakage of peculiar smell is effectively prevented.

Description

Technical Field

[0001] This utility model relates to the field of sewer pipe technology, specifically to a pipe odor prevention device. Background Technology

[0002] In existing technologies, common sewage and domestic drainage pipes are generally equipped with odor prevention and deodorization designs during installation. Taking public squat toilets as an example, the drainage pipes of squat toilets typically use a bend with a water storage design. The water retained in the bend forms a physical barrier, blocking the flow of odors and biogas from the sewer to indoor air through the water seal effect. At the same time, it can also prevent mosquitoes and debris from rising back up the pipes to a certain extent.

[0003] However, the existing technology of using a water-storage trap with a U-bend to prevent odors also has significant drawbacks in practical use. Taking public squat toilets as an example, these toilets are used frequently (e.g., in densely populated places like schools and shopping malls). To save time or due to misoperation, some users often flush quickly with insufficient water, making it difficult to maintain the water seal height within the U-bend at an effective barrier level. This easily leads to the failure of the seal, and once the water seal is damaged, the pungent odor from the sewer will directly permeate the room, not only affecting the user's sensory experience but also potentially spreading bacteria from the pipes, posing a threat to public health and safety. Utility Model Content

[0004] The purpose of this utility model is to solve the problems in the prior art by proposing a pipe odor prevention device. This device abandons the original elbow and water storage design and instead sets up a cleverly structured and responsive one-way valve mechanism to achieve good sealing effect and high reliability.

[0005] To solve the above problems, this utility model provides the following technical solution:

[0006] A pipe odor prevention device, comprising:

[0007] The carrier pipe is installed inside the sewer pipe, and its outer wall is sealed to the inner wall of the sewer pipe.

[0008] The flexible conical tube has a large-diameter open end and a small-diameter closed end. The large-diameter open end is in a sealed state against the inner wall of the carrier tube in the radial direction, and is installed on the carrier tube in a partially fixed manner, so that the large-diameter open end is divided into a restricted part and a free part in the circumferential direction. When the water flows to the small-diameter closed end, the free part can be squeezed and deformed away from the inner wall of the carrier tube, and a flow channel is formed between the free part and the inner wall of the carrier tube.

[0009] As a further embodiment of this utility model: in the axial direction, the projection of the small-diameter closed end onto the large-diameter open end is eccentrically arranged, so that the flexible conical cylinder forms an oblique conical structure, and the projection position falls within the limiting part.

[0010] As a further embodiment of this utility model: in the axial direction, the projection of the small-diameter closed end onto the limiting part falls into the edge of the limiting part.

[0011] As a further embodiment of this utility model: a reinforcing strip is provided on the inner side of the generatrix of the flexible conical cylinder near the projection point, and the reinforcing strip is arranged along the generatrix direction. The reinforcing strip is connected to the carrier tube by a first fastener.

[0012] As a further embodiment of this utility model, the device also includes a locking component, which includes an arc-shaped piece adapted to the arc shape of the large-diameter opening end. The arc-shaped piece is coaxially placed inside the large-diameter opening end and locked to the carrier tube by a second fastener.

[0013] As a further embodiment of this utility model, the arc-shaped piece is configured as a semi-circular structure.

[0014] As a further embodiment of this utility model, the device also includes a flexible mounting sleeve for sealing the area between the outer wall of the carrier pipe and the inner wall of the sewer pipe. The flexible mounting sleeve is fitted onto the outer wall of the carrier pipe and is tapered in shape, abutting against the inner wall of the sewer pipe.

[0015] As a further embodiment of this utility model: the first fastener and / or the second fastener includes a fastening bolt and a nut that cooperates with it.

[0016] As a further embodiment of this utility model, the flexible conical cylinder is configured as a rubber conical cylinder.

[0017] As a further embodiment of this utility model, the reinforcing strip is a rubber strip.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. By partially fixing the large-diameter open end of the flexible conical tube and creating a restricted section and a free section, when water flows towards the small-diameter closed end, the free section can be easily pushed open like a hinge or curtain to form a smooth flow channel; when there is no water flow or reverse odor airflow, the flexible conical tube relies on its own elasticity and hydrostatic pressure to naturally rebound and fit tightly against the inner wall of the carrier tube to achieve a reliable seal and effectively prevent reverse leakage of odor.

[0020] 2. By eccentrically arranging the cone point (closed end of the small diameter) and placing the projection within the confining section, the area and range of motion of the free section are increased. When water flows, the lever arm acting on the free section is longer and the force is more uneven, making it easier to be pushed aside by the water flow, lowering the pressure threshold for opening the water flow, and improving the sensitivity of the device. At the same time, this asymmetrical structure helps guide the water flow to deflect more smoothly to one side, reducing turbulence and energy loss, and making drainage more efficient.

[0021] 3. By projecting the cone point (small diameter closed end) onto the edge of the limiting part, an approximate "right-angled cone" shape is formed, maximizing the effective working area of ​​the free part. Almost the entire side of the cone can be used to respond to the water flow, further reducing the water flow opening resistance and achieving extremely low starting water pressure. This is particularly advantageous for odor-proof sealing and opening of small-flow drainage (such as handwashing), improving the practicality and user experience of the device in this application.

[0022] 4. By setting a reinforcing strip inside the generatrix of the projection point where stress is most concentrated, it is equivalent to adding a reinforcing rib to the flexible conical cylinder. This effectively resists fatigue damage caused by repeated deformation, prevents tearing, and extends the service life of the device. At the same time, using the reinforcing strip as the connection base point of the first fastener distributes the concentrated force to the strip, preventing the fastener from directly tearing the flexible conical cylinder body, making the overall connection more robust and reliable.

[0023] 5. The flexible installation sleeve, as an independent sealing unit, has a conical design that allows it to adapt to pipes of different diameters within a certain range. It achieves a tight fit through compression deformation, ensuring a static seal between the outer wall of the carrier pipe and the inner wall of the pipe, preventing odors from leaking out from here. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings.

[0025] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0026] Figure 2 This is a side view structural diagram of the present invention;

[0027] Figure 3 yes Figure 2 A schematic diagram of the cross-sectional structure along the AA direction;

[0028] Figure 4 This is a schematic diagram of the flexible conical cylinder three-dimensional structure in this utility model. Figure 1 ;

[0029] Figure 5 This is a schematic diagram of the flexible conical cylinder three-dimensional structure in this utility model. Figure 2 ;

[0030] Figure 6 This is a cross-sectional view of the carrier tube of this utility model;

[0031] Figure 7 This is a cross-sectional structural diagram of the carrier tube and flexible conical cylinder of this utility model.

[0032] In the picture:

[0033] 1. Carrier tube;

[0034] 2. Flexible conical cylinder; 201. Large-diameter open end; 202. Small-diameter closed end; 203. Restricted part; 204. Free part;

[0035] 3. Reinforce long strips;

[0036] 4. First fastener;

[0037] 5. Curved sheet;

[0038] 6. Second fastener;

[0039] 7. Flexible mounting sleeve. Detailed Implementation

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0041] like Figures 1-7 As shown, a pipe odor prevention device includes a carrier pipe 1 made of rigid material and a flexible conical cylinder 2 (preferably made of rubber). The flexible conical cylinder 2 has a large-diameter open end 201 and a small-diameter closed end 202. The sealing and assembly of the flexible conical cylinder 2 within the carrier pipe 1 are described below:

[0042] (1) Sealing: When the flexible conical tube 2 is placed in the inner cavity of the carrier tube 1, the large-diameter open end 201 relies on its own flexible function to contact the inner wall of the carrier tube 1 radially, thereby achieving a coaxial seal between the large-diameter open end 201 and the inner wall of the carrier tube 1. Therefore, the carrier tube 1 can be sealed and divided into two sections by the flexible conical tube 2 itself.

[0043] (2) Assembly: After the flexible conical tube 2 seals and divides the carrier tube 1 into two sections, the large-diameter open end 201 can be partially fixedly installed on the carrier tube 1. Under this fixed installation method, the large-diameter open end 201 is divided into two parts along the circumference: the restricted part 203 and the free part 204. The restricted part 203 is the part that is fixedly installed at the large-diameter open end 201, and the free part 204 is the part that is not fixedly installed at the large-diameter open end 201.

[0044] After the flexible conical cylinder 2 is sealed and assembled inside the carrier tube 1, the large-diameter open end 201 is divided into a restrictive part 203 and a free part 204. When water flows in one section of the carrier tube 1, due to the installation characteristics of the restrictive part 203 and the free part 204, the restrictive part 203 will not deform due to the impact of the water flow, while the free part 204 will deform due to the impact of the water flow. The free part 204 can be squeezed and deformed away from the inner wall of the carrier tube 1, and a flow channel is formed between the free part 204 and the inner wall of the carrier tube 1. The formation of this flow channel allows water to flow to the other section of the carrier tube 1, achieving connection.

[0045] like Figures 4-5 As shown, furthermore, since the different positions of the small-diameter closed end 202 will have different obstructing effects on the water flow, this application preferably sets the flexible conical cylinder 2 as an oblique cone structure, that is, the projection of the small-diameter closed end 202 on the large-diameter open end 201 is set as an eccentric layout, and the projection position falls within the limiting part 203. With this design, the small-diameter closed end 202 can be maximized to be far away from the plane where the free part 204 is located. The plane where the free part 204 is located is the flow channel area generated by subsequent deformation, that is, the obstruction of the small-diameter closed end 202 to the water flow is minimized. It should be noted that the direction of water flow is opposite to the direction of the small-diameter closed end 202, that is, the direction of water flow is the direction of movement from the small-diameter closed end 202 to the large-diameter open end 201.

[0046] With the flexible conical cylinder 2 configured as an oblique cone, this application preferably designs the small-diameter closed end 202 to be fitted close to the inner wall of the carrier tube 1, that is, the projection of the small-diameter closed end 202 on the limiting part 203 falls at the edge of the limiting part 203. This design can achieve the following: Figure 3 As shown in the figure, the arrows in this diagram indicate the direction of water flow. Under this design, the small-diameter closed end 202 has the least interference effect on the water flow.

[0047] Still with Figure 3Taking the current state as an example, when the water flow from the right side impacts the left side, due to the flexibility of the flexible conical cylinder 2, the small-diameter closed end 202 may also deform to the left under the impact of the water flow. This deformation will obstruct the water flow. To address this, this application provides a reinforcing strip 3 on the inner side of the generatrix near the projection point of the flexible conical cylinder 2, and the reinforcing strip 3 is arranged along the generatrix direction. The reinforcing strip 3 is connected to the carrier pipe 1 through the first fastener 4. The reinforcing strip 3 is used to limit the inner side of the generatrix near the projection point of the flexible conical cylinder 2, that is, to limit the small-diameter closed end 202. When the water flow from the right side impacts the left side later, the small-diameter closed end 202 will not deform or shift. At the same time, correspondingly, the reinforcing strip 3 can also be made of rubber material. The small-diameter closed end 202 can form an adaptive deformation relationship with the flexible conical cylinder 2 by means of the elastic properties of the reinforcing strip 3, preventing the small-diameter closed end 202 at a single position from being damaged by a large water flow impact.

[0048] like Figures 4-7 As shown, for the design described above where the large-diameter opening end 201 is partially fixedly mounted on the carrier tube 1, this application adds a locking component. The locking component includes an arc-shaped piece 5 adapted to the arc shape of the large-diameter opening end 201. The arc-shaped piece 5 is coaxially placed inside the large-diameter opening end 201 and locked to the carrier tube 1 by a second fastener 6. By relying on the partial contact between the arc-shaped piece 5 and the large-diameter opening end 201, this portion of the large-diameter opening end 201 is stably locked to the carrier tube 1. By changing the arc length of the arc-shaped piece 5, its contact length with the large-diameter opening end 201 can be lengthened or shortened, that is, the length of the limiting part 203 can be adjusted to achieve different fixing methods. In use, after selecting the corresponding installation location, by selecting an arc-shaped piece 5 of the appropriate arc length to fix the large-diameter opening end 201, the length of the free part 204 can be determined, and correspondingly, the size of the flow channel formed by the subsequent deformation of the free part 204 is also determined. In this application, the arc-shaped piece 5 is preferably configured as a semi-circular structure, that is, the restricting part 203 and the free part 204 divide the large-diameter opening end 201 in the circumferential direction.

[0049] The first fastener 4 and the second fastener 6 described above can be any type of fastening component in the prior art, such as a locking combination of bolts, nuts and washers.

[0050] To facilitate the sealed installation of the carrier pipe 1 in the corresponding sewer pipe, such as Figure 6 As shown, this application adds a flexible installation sleeve 7, which is tapered in shape. The flexible installation sleeve 7 is used to seal the area between the outer wall of the carrier pipe 1 and the inner wall of the drain pipe. After the flexible installation sleeve 7 is installed, it is fitted onto the outer wall of the carrier pipe 1 and is in contact with the inner wall of the drain pipe.

[0051] The working principle of this utility model is as follows: After the carrier pipe 1 is installed in the drain pipe of the corresponding location, during the flushing process, the water flow is flushed into the carrier pipe 1 and first comes into contact with the small-diameter closed end 202 of the flexible conical cylinder 2 inside the carrier pipe 1. Since the large-diameter open end 201 of the flexible conical cylinder 2 is only locked by the semi-circular arc plate 5, the water flow will squeeze the flexible conical cylinder 2 under its own impact force, causing the unlocked part of the large-diameter open end 201 (i.e., the free part 204) to be squeezed to the left, thereby creating a flow channel for water to flow out. The water then flows smoothly out of the carrier pipe 1 along this flow channel. After the water flow is finished, the squeezing force of the water flow on the flexible conical cylinder 2 disappears. Due to the elasticity of the rubber material, the flexible conical cylinder 2 quickly returns to its original shape and re-contacts the inner wall of the carrier pipe 1 to form a seal. In the blocked state, if an odor is generated in the sewer pipe and enters the carrier pipe 1, the odor will enter the naturally expanding flexible conical cylinder 2. As mentioned above, the flexible conical cylinder 2 uses its own elasticity to seal and divide the carrier pipe 1 into two sections (within...). Figure 3 From a visual perspective, it consists of a left section and a right section. This airtight separation can completely block out odors and prevent them from rising upwards.

[0052] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A pipe odor prevention device, characterized in that, include: The carrier pipe (1) is installed inside the sewer pipe, and its outer wall is sealed to the inner wall of the sewer pipe. The flexible conical tube (2) has a large-diameter open end (201) and a small-diameter closed end (202). The large-diameter open end (201) is in a sealed state against the inner wall of the carrier tube (1) in the radial direction. The large-diameter open end (201) is installed on the carrier tube (1) in a partially fixed manner, so that the large-diameter open end (201) is divided into a restricted part (203) and a free part (204) in the circumferential direction. When the water flows to the small-diameter closed end (202), the free part (204) can be squeezed and deformed away from the inner wall of the carrier tube (1) and a flow channel is formed between the free part (204) and the inner wall of the carrier tube (1). When there is no incoming water flow, the free part (204) relies on its own flexibility to abut against the inner wall of the carrier tube (1) in the radial direction to form a blockage.

2. The pipe odor prevention device according to claim 1, characterized in that, In the axial direction, the projection of the small-diameter closed end (202) onto the large-diameter open end (201) is eccentric, so that the flexible conical cylinder (2) forms an oblique cone structure, and the projection position falls into the limiting part (203).

3. The pipe odor prevention device according to claim 2, characterized in that, In the axial direction, the projection of the small-diameter closed end (202) onto the limiting part (203) falls at the edge of the limiting part (203).

4. A pipe odor prevention device according to claim 2 or 3, characterized in that, The flexible conical tube (2) has a reinforcing strip (3) on the inner side of the busbar near the projection point, and the reinforcing strip (3) is arranged along the busbar direction. The reinforcing strip (3) is connected to the carrier tube (1) through the first fastener (4).

5. A pipe odor prevention device according to claim 4, characterized in that, The device also includes a locking element, which includes an arc-shaped piece (5) adapted to the arc shape of the large-diameter opening end (201). The arc-shaped piece (5) is coaxially placed inside the large-diameter opening end (201) and locked to the carrier tube (1) by a second fastener (6).

6. The pipe odor prevention device according to claim 5, characterized in that, The arc-shaped piece (5) is configured as a semi-circular structure.

7. A pipe odor prevention device according to any one of claims 1-3, characterized in that, The device also includes a flexible mounting sleeve (7) for sealing the area between the outer wall of the carrier pipe (1) and the inner wall of the sewer pipe. The flexible mounting sleeve (7) is fitted onto the outer wall of the carrier pipe (1) and is tapered in shape and abuts against the inner wall of the sewer pipe.

8. A pipe odor prevention device according to claim 5, characterized in that, The first fastener (4) and / or the second fastener (6) include a fastening bolt and a nut that mates with it.

9. A pipe odor prevention device according to any one of claims 1-3, characterized in that, The flexible conical tube (2) is configured as a rubber conical tube.

10. A pipe odor prevention device according to claim 4, characterized in that, The reinforcing strip (3) is a rubber strip.

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