Prefabricated cement shaft
By using structures such as water-stop rubber rings, washers, and wedges in precast cement well cylinders, the problems of low strength and insufficient waterproof performance of traditional inspection wells are solved, achieving high construction efficiency, good waterproof effect, and long service life.
Patent Information
- Application Number
- CN202423146139.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-19
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-12-19
AI Technical Summary
Traditional underground pipeline inspection wells are constructed using brick masonry, which suffers from low strength, slow construction speed, easy leakage, and poor durability. Furthermore, the waterproofing performance of the joints between existing precast well shafts is insufficient.
Precast cement well casings are used, and waterproof performance at the joints is enhanced by installing water-stop rubber rings, gaskets and wedges at the joints, combined with cement mortar or sealant for caulking and sealing. Circular grooves are also provided on the well casing body and the outer side wall of the well to facilitate tight bonding with the backfill material.
It improves the construction efficiency and connection stability of precast well casings, enhances waterproof performance, facilitates maintenance, and extends service life.
Smart Images
Figure CN223523226U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a well shaft technical field, concretely relates to a prefabricated cement well shaft. BACKGROUND
[0002] When laying underground rainwater pipeline and sewage pipeline, in order to facilitate the construction and maintenance of rainwater pipeline and sewage pipeline, an inspection well is arranged every certain distance on the straight section pipeline to facilitate the regular inspection of the pipeline condition and the daily repair and maintenance, and the traditional underground pipeline inspection well is completed by bricklaying, which has low strength, slow construction speed, easy leakage, poor durability and short service life, so in recent years, prefabricated inspection wells gradually replace the traditional bricklaying, and in the prior art, for example, patent publication No. CN215669972U discloses a prefabricated well shaft structure, which comprises a well chamber, a well wall, a first well shaft at the upper part of the well chamber, a bricklaying well shaft outside the first well shaft, a second well shaft between the well chamber and the first well shaft, a prefabricated well ring on the top surface of the first well shaft, an inspection well cover on the top surface of the prefabricated well ring and a filling structure layer, the top surface of the first well shaft and the top surface of the bricklaying well shaft are flush, a mortar cushion layer is further arranged around the edge of the prefabricated well ring, the mortar cushion layer adopts dry hard waterproof cement mortar, and the rabbet connection between each prefabricated well shaft with the same thickness of the structure layer should be sealed with 1:2 waterproof cement mortar, but the rabbet between the prefabricated well shafts is only sealed with waterproof cement mortar, which is not conducive to further improving the waterproof performance of the connection between the prefabricated well shafts. SUMMARY
[0003] The utility model aims at overcoming the above-mentioned defects or problems existing in the background art, and provides a prefabricated cement well shaft.
[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:
[0005] A prefabricated cement well shaft, comprising a well shaft body and a well chamber, wherein the outer wall of the well shaft body and the well chamber is provided with a ring groove, the well shaft body comprises a well shaft part and an expanded part connected below the well shaft part, the inner diameter of the lower part of the expanded part is greater than that of the upper part, a first connecting part is arranged at the lower end of the expanded part, the inner side of the first connecting part is a stepped hole structure, the first connecting part is sleeved on the top of the well chamber, a first water stop rubber ring is installed on the inner hole side wall of the first connecting part, a first notch is arranged below the first water stop rubber ring, the first notch penetrates the first connecting part, a first notch groove is arranged on the outer wall of the well chamber corresponding to the first notch, the first notch and the first notch groove are used for installing a first notch block, and a first gasket is arranged between the upper end surface of the well chamber and the first connecting part.
[0006] In some embodiments of the utility model, the number of first notches is 2-6, and the interval angle between adjacent first notches is the same.
[0007] In some embodiments of the utility model, the inner wall of the well chamber is embedded with a step part.
[0008] In some embodiments of the utility model, the joint between the inner hole side wall of the first connecting part and the outer wall of the well chamber is sealed by cement mortar or sealing paste, the first gasket is a rubber sealing gasket, the ring width of the first gasket is not greater than the thickness of the well chamber, and the depth of the first notch is not more than half of the thickness of the well chamber.
[0009] In some embodiments of the utility model, the inner side of the flared part is a conical hole structure with a small upper part and a large lower part, the inner diameter of the lower part of the flared part is the same as the inner diameter of the well chamber, and the inner diameter of the upper part of the flared part is the same as the inner diameter of the well shaft part.
[0010] In some embodiments of the utility model, the height of the inner hole side wall of the first connecting part is 2-4 times the thickness of the well chamber.
[0011] In some embodiments of the utility model, the well chamber comprises an upper well chamber and a lower well chamber, the first notch is arranged in the upper well chamber, the lower well chamber is provided with a bottom plate at the bottom, the lower well chamber is provided with a pipeline connecting hole, the pipeline connecting hole is used for placing a pipeline, and the lower end of the upper well chamber is connected with the lower well chamber through a second connecting part.
[0012] In some embodiments of the utility model, the inner side of the second connecting part is a stepped hole structure, the second connecting part is sleeved on the top of the lower well chamber, a second water stop rubber ring is mounted on the inner hole side wall of the second connecting part, a second notch is arranged below the second water stop rubber ring, the second notch penetrates through the second connecting part, a second notch groove is arranged on the outer wall of the lower well chamber corresponding to the second notch, the second notch and the second notch groove are used for mounting a second notch block, and a second gasket is arranged between the upper end face of the lower well chamber and the second connecting part.
[0013] In some embodiments of the utility model, the lower well chamber is provided with an extension pipe part outward along the pipeline connecting hole, and a rubber sealing ring is arranged between the pipeline connecting hole and the pipeline.
[0014] From the above description of the utility model, the utility model has the following beneficial effects relative to the prior art:
[0015] 1. The prefabricated cement well shaft is used to replace the cast-in-place or cast-in-situ well shaft, has strong controllability, shortens the construction period, and smoothly connects with the structure layer paving construction, the connecting part is connected with the well chamber on the inner side through a notch block, has good fixing effect, the installation between the well shaft body and the well chamber is convenient, meanwhile, the outer side wall of the well chamber is provided with a plurality of ring grooves, the ring grooves are convenient for being combined with the backfilled material during the installation of the prefabricated cement well shaft.
[0016] 2, the connecting part and the well chamber on the inner side are sealed by caulking at the joint, and the water stop rubber ring and the gasket are installed to achieve good waterproof effect; the pipeline connecting hole is provided with an extension pipe portion, a rubber sealing ring is arranged between the pipeline connecting hole and the pipeline, and the joint between the extension pipe portion and the pipeline is sealed by caulking with cement mortar or sealing paste, thereby achieving good waterproof effect.
[0017] 3, the inner wall of the well chamber is embedded with a step part, so that the maintenance workers can enter the lower well chamber from the well mouth at the upper end of the well shaft part. BRIEF DESCRIPTION OF DRAWINGS
[0018] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following briefly introduces the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.
[0019] Figure 1 It is a structural schematic diagram of the present application;
[0020] Figure 2 It is a structural schematic diagram of the present application; Figure 1 It is an enlarged view of A;
[0021] Main figure mark explanation:
[0022] 1, the well shaft body, 10, the well shaft part, 11, the flared part, 12, the first connecting part, 120, the inner hole side wall, 13, the first water stop rubber ring, 14, the first notch, 15, the first notch, 16, the first notch, 17, the first gasket, 2, the upper well chamber, 20, the second connecting part, 3, the lower well chamber, 30, the pipeline connecting hole, 31, the rubber sealing ring, 32, the extension pipe portion, 4, the step part, 5, the ring groove, 6, the bottom plate. DETAILED DESCRIPTION
[0023] The technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are preferred embodiments of the present application, and should not be regarded as excluding other embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.
[0024] In the claim, description and above drawings of the present application, unless otherwise explicitly limited, the terms such as "first", "second" or "third" are used to distinguish different objects, and are not used to describe a specific order.
[0025] In the claims, the specification, and the drawings of the present application, terms such as "top", "bottom", "front", "back", "leading", "trailing", etc., if used, are used for convenience and are not intended to necessitate that the apparatus, the article, or the component referred to must have a particular orientation. Terms such as "first", "second", "third", etc., the specification, and the drawings of the present application, unless otherwise noted, are used in accordance with their plain ordinary meaning, and are not necessarily intended to indicate or imply a particular importance or significance.
[0026] In the claims, the specification, and the drawings of the present application, unless otherwise noted, terms such as "fixedly connected" or "fixedly connected" should be interpreted broadly, that is, any connection mode without displacement relationship and relative rotation relationship between the two, that is, it includes non-detachable fixed connection, detachable fixed connection, integration and fixed connection through other devices or elements.
[0027] In the claims, the specification, and the drawings of the present application, terms such as "including", "having" and their variants are intended to mean "including but not limited to".
[0028] Embodiment, see Figures 1-2 :
[0029] A prefabricated cement wellbore comprises a wellbore body 1, a well chamber, the wellbore body 1 comprises a wellbore part 10 and a flared part 11 connected below the wellbore part 10, and the lower part of the flared part 11 has a larger inner diameter than the upper part. Preferably, the inner side of the flared part 11 is a conical hole structure with a large lower part and a small upper part, the lower part of the flared part 11 has the same inner diameter as the well chamber, the upper part of the flared part 11 has the same inner diameter as the wellbore part 10, and the lower end of the flared part 11 is provided with a first connecting part 12.
[0030] The inner side of the first connecting part 12 is a stepped hole structure, the first connecting part 12 is sleeved on the top of the well chamber, the inner hole side wall 120 of the first connecting part 12 is provided with a first water stop rubber ring 13, which is used to prevent external water from entering the joint between the inner hole side wall 120 of the first connecting part 12 and the outer wall of the well chamber, a first gasket 17 is arranged between the upper end surface of the well chamber and the first connecting part 12, a first notch 14 is arranged below the first water stop rubber ring 13, the first notch 14 penetrates the first connecting part 12, and the outer wall of the well chamber is provided with a first notch groove 15 corresponding to the first notch 14, the first notch 14 and the first notch groove 15 are used to install a first notch block 16, which has good fixing effect; it can be understood that the first notch block 16 and the first notch 14 adopt interference fit.
[0031] As an implementation, the number of the first notches 14 is 2-6, and the interval angle between adjacent first notches 14 is the same. Preferably, the number of the first notches 14 is 3, and the interval angle between adjacent first notches 14 is 120°.
[0032] As an implementation, the inner wall of the well chamber is embedded with the step member 4, and the step member 4 in the well chamber is arranged in the same direction, which facilitates the maintenance personnel to enter the lower well chamber from the well mouth at the upper end of the well shaft part 10. Preferably, the step distance of the step member 4 is 360 mm, and the material of the step member 4 is plastic steel or carbon steel.
[0033] As an implementation, the inner hole side wall 120 of the first connecting part 12 and the joint of the outer wall of the well chamber are sealed and blocked by cement mortar or sealing paste, and the first gasket 17 is a rubber sealing gasket, which plays a role of waterproofing and buffering. It can be understood that the joint to be sealed and blocked includes the upper side and the lower side of the first water stop rubber ring 13.
[0034] As an implementation, the ring width of the first gasket 17 is not greater than the thickness of the well chamber, and the depth of the first notch 15 is not more than half of the thickness of the well chamber. Preferably, the ring width of the first gasket 17 is the same as the thickness of the well chamber, and the depth of the first notch 15 is one third to one half of the thickness of the well chamber.
[0035] As an implementation, the height of the inner hole side wall 120 of the first connecting part 12 is 2-4 times the thickness of the well chamber, which facilitates to reserve sufficient sealing and blocking space and plays a better waterproofing effect, and at the same time, helps to ensure the stability of the connection between the well shaft body 1 and the well chamber.
[0036] As an implementation, the outer side wall of the well shaft body 1 and the well chamber is provided with a plurality of ring grooves 5, which facilitates to be closely combined with the backfilled material when the prefabricated cement well shaft is installed. Preferably, the depth of the ring groove 5 is not more than one third of the thickness of the well shaft body 1 or the well chamber.
[0037] As an implementation, the well chamber includes an upper well chamber 2 and a lower well chamber 3, the bottom of the lower well chamber 3 is provided with a bottom plate 6, the lower well chamber 3 is provided with a pipeline connecting hole 30 for placing a pipeline, and the lower end of the upper well chamber 2 is connected with the lower well chamber 3 through a second connecting part 20. It can be understood that the well shaft body 1, the upper well chamber, and the lower well chamber 3 are arranged with a steel reinforcement frame to improve the overall structural strength; the lower end of the well shaft body 1 is connected with the upper end of the upper well chamber 2, the first notch 15 is arranged in the upper well chamber 2, and the thickness of the upper well chamber 2 and the lower well chamber 3 is the same.
[0038] As an implementation, the inner side of the second connecting part 20 is a stepped hole structure, the second connecting part 20 is sleeved on the top of the lower well chamber 3, the inner hole side wall of the second connecting part 20 is provided with a second water stop rubber ring, a second notch is arranged below the second water stop rubber ring, the second notch penetrates through the second connecting part 20, a second notch groove is arranged on the outer wall of the lower well chamber 3 corresponding to the second notch, the second notch and the second notch groove are used for mounting a second notch block, and a second gasket is arranged between the upper end surface of the lower well chamber 3 and the second connecting part 20.
[0039] As an implementation, the lower well chamber 3 is outwardly provided with an extension pipe part 32 along the pipeline connecting hole 30, a rubber sealing ring 31 is arranged between the pipeline connecting hole 30 and the pipeline, and cement mortar or sealing paste is used for caulking sealing at the joint between the extension pipe part 32 and the pipeline, so that the reliability of the connection between the pipeline and the lower well chamber 3 and the good waterproof performance are helped to be ensured.
[0040] The above description and embodiment are used to explain the protection scope of the utility model, but do not constitute the limitation to the protection scope of the utility model. Through the inspiration of the utility model or the above embodiment, the modification, equivalent replacement or other improvement of the utility model embodiment or one part of technical features can be obtained by the ordinary skill in the art in combination with the common knowledge, the ordinary technical knowledge in the art and / or the prior art through logical analysis, reasoning or limited test, and should be included in the protection scope of the utility model.
Claims
1. A precast cement shaft, characterized by: The utility model provides a well shaft body (1), well chamber, the outside wall of well shaft body (1), well chamber is provided with ring groove (5), well shaft body (1) includes well shaft part (10) and the flared portion (11) connected below thereof, the lower part inner diameter of flared portion (11) is greater than the upper part inner diameter thereof, the lower end of flared portion (11) is provided with first connecting part (12), the inner side of first connecting part (12) is step hole structure, first connecting part (12) is sleeved in well chamber top, the inner hole side wall (120) of first connecting part (12) is installed with first water stop rubber ring (13), first water stop rubber ring (13) is arranged with first notch (14) below, first notch (14) penetrates first connecting part (12), the outer wall of well chamber is provided with first notch groove (15) corresponding first notch (14), first notch (14), first notch groove (15) are used to install first notch block (16), the upper end surface of well chamber is arranged with first gasket (17) between first connecting part (12).
2. A precast cement shaft as defined in claim 1, wherein: The inner hole side wall (120) of first connecting part (12) and the joint of well chamber outer wall adopt cement mortar or sealing paste to embed and seal, first gasket (17) adopts rubber sealing gasket, the ring width of first gasket (17) is not greater than the thickness of well chamber, the depth of first notch groove (15) is not more than half of the thickness of well chamber.
3. A precast cement shaft as defined in claim 1, wherein: The inner wall of well shaft body (1), well chamber is embedded with step part (4).
4. A precast cement shaft as defined in claim 1, wherein: The number of first notch (14) is 2-6, the interval angle between adjacent first notch (14) is same.
5. A precast cement shaft as defined in claim 1, wherein: The inner side of flared portion (11) is upper small lower big frustum hole structure, the lower part inner diameter of flared portion (11) is same with the inner diameter of well chamber, the upper part inner diameter of flared portion (11) is same with the inner diameter of well shaft part (10).
6. A precast cement shaft as defined in claim 1, wherein: The height of inner hole side wall (120) of first connecting part (12) is 2-4 times of the thickness of well chamber.
7. A precast cement shaft as claimed in any one of claims 1 to 6, wherein: The well chamber includes upper well chamber (2), lower well chamber (3), first notch groove (15) is arranged in upper well chamber (2), bottom plate (6) is arranged at the bottom of lower well chamber (3), pipeline connecting hole (30) is reserved in lower well chamber (3), and pipeline connecting hole (30) is used to place pipeline, and the lower end of upper well chamber (2) is connected with lower well chamber (3) through second connecting part (20).
8. A precast cement shaft as defined in claim 7, wherein: The inner side of second connecting part (20) is step hole structure, second connecting part (20) is sleeved in the top of lower well chamber (3), second connecting part (20) is installed with second water stop rubber ring, second water stop rubber ring is arranged with second notch below, second notch penetrates second connecting part (20), the outer wall of lower well chamber (3) is provided with second notch groove corresponding second notch, and second notch, second notch groove are used to install second notch block, and second gasket is arranged between the upper end surface of lower well chamber (3) and second connecting part (20).
9. A precast cement shaft as defined in claim 7, wherein: Lower well chamber (3) is arranged with extension pipe part (32) outward along pipeline connecting hole (30), and rubber sealing ring (31) is arranged between pipeline connecting hole (30) and pipeline.