Standard inspection opening with high sealing performance

Abstract

The utility model provides a vertical inspection port with high sealing performance, and belongs to the technical field of pipelines. The problem of how to improve the sealing performance of the inspection opening is solved. The high-leakproofness vertical inspection opening comprises a cover body and an elastic and tubular sealing sleeve, a cylindrical cover tongue is arranged on the inner bottom wall of the cover body, the sealing sleeve is connected to the outside of the cover tongue in a sleeving mode, an upper limiting part which protrudes outwards and abuts against the inner bottom wall of the cover body is arranged on the outer side wall of one end of the sealing sleeve in the circumferential direction, and the outer side wall of the other end of the sealing sleeve is provided with a lower limiting part which abuts against the inner bottom wall of the cover body. The side, facing the open end of the cover body, of the upper limiting part is provided with a lower pressing rib in the circumferential direction, the inner side wall of the sealing sleeve is provided with an inner abutting rib abutting against the outer side wall of the cover tongue in the circumferential direction, and the outer side wall of the sealing sleeve is provided with an outer abutting rib in the circumferential direction. The high-sealing-performance vertical inspection opening can improve the sealing performance of the inspection opening.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipelines and relates to a vertical inspection port with high sealing performance. Background Art

[0002] The vertical inspection port is an important component of the drainage pipe system in the current construction field. It is generally installed between two vertical pipes or horizontal pipes with a longer length to facilitate staff to inspect and clear the pipe. It specifically includes a pipe body with an inspection port on the side, and the pipe body is also equipped with an inspection cover to seal the inspection port.

[0003] The sealing performance of the inspection port of the vertical inspection port is an important condition for evaluating whether the inspection port is qualified. In order to ensure the firmness of the connection between the inspection cover and the vertical inspection port, screw connection or clamping is generally used for connection, and raw tape is used to seal the gap between the two. During actual installation, workers are required to wrap the raw tape around the outer wall of the inspection port in advance, and then assemble the inspection cover. The operation is relatively inconvenient, and the raw tape will cause irregular deformation during the screwing or clamping process of the inspection cover, which is very likely to form a gap between the inner wall of the inspection cover and the outer wall of the inspection port, and the sealing effect is unsatisfactory.

[0004] In order to avoid the above defects, the prior art generally opens a groove along the circumferential direction on the inner wall of the inspection, and embeds a sealing sleeve made of elastic material in the groove. However, even so, during installation, the force applied to the sealing sleeve is not uniform in its circumferential direction, which will cause some positions to be fully sealed and some positions to be weakly sealed. When the sealing sleeve hardens due to oxidation, there will be a risk of sealing failure in the weak positions. Summary of the Invention

[0005] The purpose of the utility model is to solve the above problems in the existing technology and propose a vertical inspection port with high sealing performance. The technical problem to be solved by the utility model is: how to improve the sealing performance of the inspection port.

[0006] The purpose of the utility model can be achieved through the following technical solutions: a highly sealed vertical inspection port, comprising a cover body and an elastic and tubular sealing sleeve, the inner bottom wall of the cover body is provided with a cylindrical cover tongue, the sealing sleeve is sleeved on the outside of the cover tongue, the outer side wall of one end of the sealing sleeve has an upper limit portion circumferentially protruding outward and pressed against the inner bottom wall of the cover body, the upper limit portion has a lower tightening rib circumferentially on the side facing the open end of the cover body, the inner side wall of the sealing sleeve is circumferentially provided with an inner tightening rib pressed against the outer side wall of the cover tongue, and the outer side wall of the sealing sleeve has an outer tightening rib circumferentially.

[0007] It should be explained first that the vertical inspection port in the present application includes a main body with an inspection port on the side wall and a cover body, and the cover body and the outer wall of the inspection port of the vertical inspection port are connected by means of threaded cooperation, and the locking force generated by the threaded connection ensures that the cover body can be positioned on the vertical inspection port. On this basis, the present application provides a cover tongue protruding toward the opening end of the cover body on the inner bottom wall of the cover body, so that the sleeve-shaped sealing sleeve can be tightened and positioned outside the cover tongue in a snap-fit manner, and at the same time, the upper limit portion at one end of the sealing sleeve and the inner bottom wall of the cover body are pressed together to limit one end of the sealing sleeve. During installation, as the cover body is continuously tightened by the thread, the outer wall of the sealing sleeve will contact the inner wall of the inspection port, and the pressure exerted on the sealing sleeve by the inner wall of the inspection port will cause the sealing sleeve to The outer wall of the sealing sleeve and the inner wall of the inspection port are connected by means of the outer retaining ribs, thereby forming a pre-tightening effect. When the sealing sleeve is deformed and sealed, a second seal is formed by the deformation of the outer retaining ribs. The presence of the inner retaining ribs can increase the retaining force between the inner wall of the sealing sleeve and the outer wall of the cover tongue, thereby ensuring the firmness of the connection between the sealing sleeve and the cover tongue. The lower retaining ribs can also be deformed under the influence of the locking force, so that the lower retaining ribs are pressed against the port surface of the inspection port, thereby forming a third seal, thereby improving the sealing of the inspection port.

[0008] In the aforementioned high-sealing vertical inspection port, the upper limit portion has an upper compression rib along the circumference of the side facing away from the cover body opening, and the upper compression rib abuts against the inner bottom wall of the cover body. The upper compression rib abutting against the inner bottom wall of the cover body ensures a tight seal between the upper limit edge and the inner bottom wall. Simultaneously, due to the elastic effect of the deformation of the upper compression rib, the upper limit edge has a tendency to move downward, ensuring a stronger abutment between the lower compression rib and the end surface of the inspection port, thereby ensuring a more effective seal between the two.

[0009] In the aforementioned high-sealing vertical inspection port, the inner sidewall at the other end of the sealing sleeve has a circumferentially inwardly projecting lower stopper. The circumferential edge of the end surface of the cover tongue, which faces the cover body opening, abuts against the lower stopper. While ensuring that the inner wall of the sealing sleeve and the outer wall of the cover tongue closely conform to each other, the lower stopper and the aforementioned upper stopper constrain the ends of the sealing sleeve. This ensures that the inner sidewall of the sealing sleeve and the outer wall of the cover tongue firmly abut against each other during the threaded tightening process, preventing irregular deformation of the sealing sleeve that could lead to uneven circumferential sealing.

[0010] In the aforementioned high-sealing vertical inspection port, the upper and lower compression ribs have an arcuate cross-sectional profile cut along the height of the cover, and are radially offset from each other along the cover. This arcuate design ensures uniform deformation of the upper and lower compression ribs when subjected to force, ensuring a good seal. Furthermore, their offset arrangement prevents insufficient deformation caused by excessive structural strength in localized areas of the sealing sleeve.

[0011] In the above-mentioned high-sealing vertical inspection port, the inner and outer abutment ribs have wedge-shaped cross-sections along the height of the cover body, which increases the deformability of each inner and outer abutment rib, ensuring that they can fully deform to improve the sealing effect of the inspection port.

[0012] In the aforementioned high-sealing vertical inspection port, multiple inner and outer ribs are provided. The inner ribs are spaced along the length of the sealing sleeve's inner wall, while the outer ribs are spaced along the length of the sealing sleeve's outer wall. This further increases the contact area between the sealing sleeve's inner wall and the flap, and between the sealing sleeve's outer wall and the inspection port's inner wall, ensuring both a secure connection to the sealing sleeve and a tight seal on the inspection port.

[0013] In the aforementioned highly sealed vertical inspection port, the closed end of the cover body is provided with a first weight-reducing groove along its circumference, and the closed end of the cover body is also provided with a plurality of second weight-reducing grooves spaced around the first weight-reducing groove. This saves material and reduces manufacturing costs. Furthermore, the presence of the first and second weight-reducing grooves also forms a reinforcing rib structure on the outer wall of the closed end of the cover body, preventing the structural strength of the cover body from being weakened due to the grooves.

[0014] Compared with the existing technology, this high-sealing vertical inspection port has the following advantages:

[0015] The sealing sleeve is tightened to the outside of the cover tongue protruding from the inner bottom wall of the cover body in a snap-fit manner, and the two ends of the sealing sleeve are limited by the upper and lower limit edges. Under the premise of ensuring the stable connection between the sealing sleeve and the cover body, inner and outer tightening ribs with wedge-shaped cross-sections are circumferentially arranged on the inner and outer sides of the sealing sleeve, and upper and lower compression ribs are circumferentially arranged on both sides of the upper limit edge. By the cooperation of the inner tightening ribs with the outer tightening ribs, the cooperation of the upper compression ribs with the lower compression ribs and the deformation of the sealing sleeve itself, three seals are formed at the inspection port of the vertical inspection port, thereby improving the sealing performance of the inspection port. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the highly sealed vertical inspection port.

[0017] Figure 2 It is a cross-sectional view cut along the length direction of the vertical inspection port and its partial enlarged view.

[0018] Figure 3 It is a structural diagram in which the cover body and the sealing sleeve are assembled into one body.

[0019] Figure 4 It is a structural diagram of the sealing sleeve and a partial enlarged diagram thereof.

[0020] Figure 5 It is a structural diagram of the sealing sleeve from another perspective and an enlarged view thereof.

[0021] In the figure, 1. cover body; 11. cover tongue; 12. weight-reducing groove 1; 13. weight-reducing groove 2; 2. sealing sleeve; 21. inner tightening rib; 22. outer tightening rib; 23. lower limit part; 24. upper limit part; 241. lower tightening rib; 242. upper tightening rib; 3. main body; 31. inspection port. DETAILED DESCRIPTION

[0022] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0023] like Figure 1 and Figure 2 As shown, in this highly sealed vertical inspection port, the vertical inspection port includes a main body with an inspection port 31 on the side wall, a cover body 1 and a sealing sleeve 2. An external thread is provided on the outer wall of the inspection port 31 along the circumferential direction, and an internal thread is provided on the inner circumferential wall of the cover body 1. The two are connected by screw connection.

[0024] Combine Figure 3-5 The inner bottom wall of the cover body 1 has a protruding cylindrical cover tongue 11, the sealing sleeve 2 is tubular and made of rubber material, the outer side wall of one end of the sealing sleeve 2 has an upper limit portion 24 along the circumferential direction, and the inner side wall of the other end has a lower limit portion 23 along the circumferential direction. The sealing sleeve 2 is sleeved and tightened to the outside of the cover tongue 11 by its own elastic force, so that the upper limit portion 24 and the inner bottom wall of the cover body 1 are in abutment against each other, and the lower limit portion 23 and the circumferential edge of the lower end surface of the cover tongue 11 are in abutment against each other.

[0025] The upper limit portion 24 has an upper tightening rib 242 along the circumferential direction on one side facing the open end of the cover body 1, and a lower tightening rib 241 along the circumferential direction on the side of the upper limit portion 24 facing away from the open end of the cover body 1, and the upper tightening rib 242 and the lower tightening rib 241 are staggered radially along the limiting portion, and the outer side wall of the seal has a plurality of outer tightening ribs 22 along the circumferential direction, and the inner side wall has a plurality of outer tightening ribs 22 along the circumferential direction, and the plurality of inner tightening ribs 21 and the plurality of outer tightening ribs 22 are spaced apart along the length direction of the sealing sleeve 2. In addition, Figure 2 As shown, the cross-sectional profiles of the upper pressing ribs 242 and the lower pressing ribs 241 cut along the height direction of the cover body 1 are arc-shaped, and the cross-sectional profiles of the inner pressing ribs 21 and the outer pressing ribs 22 cut along the height direction of the cover body 1 are wedge-shaped.

[0026] A circular weight-reducing groove 12 is provided at the center of the closed end of the cover body 1 , and six weight-reducing grooves 2 13 are provided at the end of the cover body 1 and are arranged around the weight-reducing groove 12 .

[0027] Installation principle: put the sealing sleeve 2 on the outside of the cover tongue 11, and make the upper limit portion 24 and the inner bottom wall of the cover body 1 abut against each other, and the lower limit portion 23 and the circumferential edge of the lower end surface of the cover tongue 11 abut against each other. At the same time, during the sleeve connection step, the outer peripheral wall of the cover tongue 11 can continuously squeeze the internal tightening ribs 21 inside the sealing sleeve 2, so that the internal tightening ribs 21 are fully deformed and pressed against the outer side wall of the cover tongue 11, thereby improving the connection firmness of the sealing sleeve 2 and the cover tongue 11. Then, the cover body 1 is connected to the inspection port 31 of the main body 3 in a screw connection. During this process, the external tightening ribs 22 can first contact the inner wall of the inspection port 31. Due to the extrusion force generated by the screw connection, the external tightening ribs 22 and the inner wall of the inspection port 31 are pressed against each other. This forms a first seal, and at the same time, the force transmitted to the sealing outer wall can also continuously squeeze the sealing sleeve 2, causing the sealing sleeve 2 to deform and press against the inner wall of the inspection port 31, thereby forming a second seal. When the cover body 1 and the inspection port 31 are screwed together, the lower side surface of the upper limit portion 24 of the sealing sleeve 2 replaces the inner bottom wall of the cover body 1 and contacts the port surface of the inspection port 31. At this time, the existing extrusion force can squeeze the upper compression rib 242 through the inner bottom wall of the cover body 1, and the lower compression rib 241 is squeezed by the port surface of the inspection port 31. The elastic force generated by the deformation of the upper compression rib 242 provides a downward movement tendency for the upper limit portion 24, and the deformation of the lower compression rib 241 and the port surface of the inspection port 31 press against each other, thereby forming a third seal.

[0028] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

[0029] Although this document frequently uses terms such as cover body 1, cover tongue 11, first weight-reducing groove 12, second weight-reducing groove 13, sealing sleeve 2, inner holding rib 21, outer holding rib 22, lower limit portion 23, upper limit portion 24, lower pressing rib 241, upper pressing rib 242, main body 3, and inspection port 31, the use of other terms is not excluded. These terms are used solely to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitations is contrary to the spirit of the present invention.

Claims

1. A vertical inspection port with high sealing performance, comprising a cover (1) and an elastic and tubular sealing sleeve (2), characterized in that: The inner bottom wall of the cover body (1) is provided with a cylindrical cover tongue (11), the sealing sleeve (2) is sleeved on the outside of the cover tongue (11), the outer side wall of one end of the sealing sleeve (2) is provided with an upper limit portion (24) protruding outward along the circumferential direction and pressed against the inner bottom wall of the cover body (1), the upper limit portion (24) is provided with a lower tightening rib (241) along the circumferential direction on the side facing the open end of the cover body (1), the inner side wall of the sealing sleeve (2) is provided with an inner tightening rib (21) pressed against the outer side wall of the cover tongue (11), and the outer side wall of the sealing sleeve (2) is provided with an outer tightening rib (22) along the circumferential direction.

2. The high-sealing vertical inspection port according to claim 1, characterized in that: The upper limit portion (24) has an upper pressing rib (242) along the circumferential direction on the side facing away from the open end of the cover body (1), and the upper pressing rib (242) is tightly pressed against the inner bottom wall of the cover body (1).

3. The high-sealing vertical inspection port according to claim 2, characterized in that: The inner side wall of the other end of the sealing sleeve (2) has a lower limit portion (23) protruding inwardly along the circumferential direction, and the circumferential edge of the end surface of the cover tongue (11) facing the opening end of the cover body (1) abuts against the lower limit portion (23).

4. The high-sealing vertical inspection port according to claim 2 or 3, characterized in that: The cross-sectional profiles of the upper pressing rib (242) and the lower pressing rib (241) cut along the height direction of the cover body (1) are arc-shaped, and the upper pressing rib (242) and the lower pressing rib (241) are staggered in the radial direction of the cover body (1).

5. The high-sealing vertical inspection port according to claim 1, 2 or 3, characterized in that: Furthermore, the cross-sections of the inner tightening ribs (21) and the outer tightening ribs (22) cut along the height direction of the cover body (1) are wedge-shaped.

6. The high-sealing vertical inspection port according to claim 5, characterized in that: There are a plurality of the inner tightening ribs (21) and the outer tightening ribs (22), and the inner tightening ribs (21) are arranged at intervals along the length direction of the inner wall of the sealing sleeve (2), and the outer tightening ribs (22) are arranged at intervals along the length direction of the outer wall of the sealing sleeve (2).

7. The high-sealing vertical inspection port according to claim 6, characterized in that: The closed end of the cover body (1) is provided with a weight-reducing groove (12) along the circumferential direction, and the closed end of the cover body (1) is provided with a plurality of weight-reducing grooves (13) spaced around the weight-reducing groove (12).

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