A highly adjustable well neck

Abstract

The application discloses a highly up-and-down adjustable well neck, which comprises a box body, a connecting ring arranged at the middle part of the upper portion of the box body, an inner neck mounting ring arranged below the connecting ring, a snap ring mounting groove arranged at the upper portion of the connecting ring, an inner neck sleeve fixedly arranged at the upper portion of the inner neck mounting ring through a screw, an annular sealing groove arranged on the outer surface of the upper portion of the inner neck sleeve, a snap ring sleeve fixedly arranged at the upper portion of the snap ring mounting groove through a screw, and a liftable well neck arranged between the snap ring sleeve and the inner neck sleeve, wherein a limiting boss penetrating through the snap ring sleeve is arranged at the lower portion of the outer surface of the liftable well neck. The inner neck sleeve, the snap ring sleeve and the liftable well neck are arranged in cooperation, so that the height of the well neck can be adjusted, and the well neck is convenient to install and maintain. The liftable well neck and the well cover are arranged in cooperation, so that the well cover is firmly installed and is not prone to loosening.

Description

Technical Field

[0001] This invention relates to the field of communication manhole technology, specifically to a manhole neck with adjustable height. Background Technology

[0002] When installing prefabricated communication manholes, a pit needs to be dug underground and the box is buried in the pit. The box is then connected to the ground through the manhole neck. However, during the installation process, the upper part of the manhole neck may be lower than the designed size due to reasons such as the pit being too deep or the box sinking after being buried. The traditional approach is to directly replace the manhole neck with one of suitable height or to add an extra small section of the manhole neck, which is very troublesome. In addition, the traditional manhole neck and manhole cover are connected by a socket without a fixed connection structure. If external force is applied, the manhole cover is prone to loosening. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a manhole neck with adjustable height, which has the advantages of easy installation and maintenance due to adjustable neck height, and secure installation of the manhole cover that is not easily loosened. This solves the problems of inconvenient installation and maintenance and easy loosening of the manhole cover caused by non-adjustable neck height.

[0004] To achieve the aforementioned goal of adjustable well neck height for easy installation and maintenance, and secure well cover installation that prevents loosening, this invention provides the following technical solution: A well neck with adjustable height includes a housing. A connecting ring is provided in the middle of the upper part of the housing. An inner neck mounting ring is provided below the connecting ring. A retaining ring mounting groove is provided above the connecting ring. An inner neck sleeve is fixedly installed above the inner neck mounting ring by screws. An annular sealing groove is provided on the outer surface of the inner neck sleeve. A retaining ring sleeve is fixedly installed above the retaining ring mounting groove by screws. A liftable well neck is provided between the retaining ring sleeve and the inner neck sleeve. A limiting boss passing through the retaining ring sleeve is provided below the outer surface of the liftable well neck. A baffle is fixedly installed on the outer side of the limiting boss by screws. A well cover is fixedly installed above the liftable well neck by screws.

[0005] Preferably, a sealing structure is provided between the mating surfaces of the inner neck mounting ring and the inner neck sleeve. The sealing structure includes a sealing groove on the upper surface of the inner neck mounting ring and a sealing ring provided below the inner neck sleeve. The sealing groove is filled with glue, and the sealing ring is inserted into the glue.

[0006] Preferably, an outer retaining ring is provided below the outer surface of the retractable well neck, and an inner retaining groove is provided on the inner wall of the retaining ring sleeve, into which the outer retaining ring is embedded.

[0007] Preferably, a number of retaining ring sleeves are evenly distributed around the perimeter of the liftable neck, and each retaining ring sleeve is independent and can be disassembled and assembled individually.

[0008] Preferably, the inside of the retaining ring sleeve has several vertical waist-shaped grooves, the limiting boss passes through the vertical waist-shaped grooves, the wall thickness around the vertical waist-shaped grooves is thickened, and the baffle presses on the outside of the thickened wall thickness.

[0009] Preferably, a gap is provided between the liftable neck and the inner neck sleeve, and a sealing ring is fitted inside the annular sealing groove to seal the gap between the liftable neck and the inner neck sleeve.

[0010] Preferably, a sealing structure is provided between the manhole cover and the movable manhole neck mating surface. The sealing structure includes a sealing groove opened on the upper surface of the movable manhole neck and a sealing ring provided below the manhole cover. The sealing groove is filled with glue, and the sealing ring is inserted into the glue.

[0011] Preferably, both the liftable neck and the inner neck sleeve are made of rigid plastic, and the inner wall at the lower end of the inner neck sleeve and the inner wall at the upper end of the liftable neck are provided with reinforcing ribs.

[0012] Preferably, when the liftable manhole neck is installed at its lowest position, the manhole cover is still higher than the retaining ring sleeve, and when the liftable manhole neck is installed upwards, the lower end face is always lower than the annular sealing groove.

[0013] Compared with the prior art, the present invention provides a well neck with adjustable height, which has the following beneficial effects: This height-adjustable well neck, through the coordinated design of an inner neck sleeve, a retaining ring sleeve, and a liftable well neck, achieves the effect of adjustable well neck height, thus facilitating installation and maintenance. The original one-piece well neck structure is made into a separate structure of an inner neck sleeve and a liftable well neck. The liftable well neck is fitted onto the outside of the inner neck sleeve and its height position is fixed by the retaining ring sleeve. By changing the installation height of the liftable well neck, the height of the well neck can be changed to the required height. Therefore, it is very convenient to change the height of the well neck to the required height during installation and maintenance without adding or removing parts.

[0014] 2. The adjustable manhole neck, through the cooperation of the adjustable manhole neck and the manhole cover, enables the manhole cover to be firmly installed and not easily loosened. A sealing groove and screw holes are set at the upper end of the manhole neck. The manhole cover is fixedly connected to the adjustable manhole neck with screws. Since the adjustable manhole neck is buried in the soil and is very firm, the manhole cover will not loosen due to external interference. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall cross-sectional view of a well neck with adjustable height proposed in this invention; Figure 2 This is a structural schematic diagram of a partially enlarged view of a well neck with adjustable height proposed in this invention; Figure 3This is a structural schematic diagram of a second partially enlarged view of a well neck with adjustable height proposed in this invention; Figure 4 This is a structural schematic diagram of a cross-sectional view of a well neck box with adjustable height proposed in this invention; Figure 5 This is a schematic diagram of a partial cross-sectional view of a well neck with adjustable height proposed in this invention.

[0016] In the diagram: 1. Housing; 2. Connecting ring; 3. Inner neck mounting ring; 4. Snap ring mounting groove; 5. Inner neck sleeve; 501. Annular sealing groove; 6. Snap ring sleeve; 601. Inner snap groove; 602. Vertical waist-shaped groove; 7. Liftable well neck; 701. Outer snap ring; 8. Limiting boss; 9. Baffle; 10. Well cover; 11. Sealing ring. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Please see Figure 1-5A height-adjustable manhole neck includes a housing 1, which is integrally injection molded by a large injection molding machine. A connecting ring 2 is located in the middle of the upper part of the housing 1. The connecting ring 2 has a thick wall, resulting in high strength. An inner neck mounting ring 3 is located below the connecting ring 2. A retaining ring mounting groove 4 is formed above the connecting ring 2. An inner neck sleeve 5 is fixedly mounted above the inner neck mounting ring 3 by screws. An annular sealing groove 501 is provided on the outer surface of the inner neck sleeve 5. A sealing structure is provided between the mating surfaces of the inner neck mounting ring 3 and the inner neck sleeve 5. The sealing structure includes the sealing groove formed on the upper surface of the inner neck mounting ring 3 and... A sealing ring is installed below the inner neck sleeve 5. The sealing groove is filled with glue, and the sealing ring is inserted into the glue. A retaining ring sleeve 6 is fixedly installed above the retaining ring mounting groove 4 by screws. A liftable well neck 7 is provided between the retaining ring sleeve 6 and the inner neck sleeve 5. An outer retaining ring 701 is provided below the outer surface of the liftable well neck 7. An inner retaining groove 601 is opened on the inner wall of the retaining ring sleeve 6, and the outer retaining ring 701 is embedded in the inner retaining groove 601. Several retaining ring sleeves 6 are evenly distributed around the periphery of the liftable well neck 7. Each retaining ring sleeve 6 is independent and can be disassembled and installed individually. A gap is provided between the liftable well neck 7 and the inner neck sleeve 5. The gap is sealed by a sealing ring 11 inside the annular sealing groove 501. The sealing ring 11 seals the gap between the liftable neck 7 and the inner neck sleeve 5. Both the liftable neck 7 and the inner neck sleeve 5 are made of hard plastic. The inner wall at the lower end of the inner neck sleeve 5 and the inner wall at the upper end of the liftable neck 7 are provided with reinforcing ribs. A limiting boss 8 is provided below the outer surface of the liftable neck 7, which passes through the retaining ring sleeve 6. A baffle 9 is fixedly installed on the outer side of the limiting boss 8 by screws. The retaining ring sleeve 6 has several vertical waist-shaped grooves 602 inside. The limiting boss 8 passes through the vertical waist-shaped grooves 602. The wall thickness around the vertical waist-shaped grooves 602 is... The thickened baffle 9 presses against the outside of the thickened wall. The manhole cover 10 is fixedly installed on the top of the liftable manhole neck 7 by screws. A sealing structure is provided between the mating surfaces of the manhole cover 10 and the liftable manhole neck 7. The sealing structure includes a sealing groove opened on the upper surface of the liftable manhole neck 7 and a sealing ring provided below the manhole cover 10. The sealing groove is filled with glue, and the sealing ring is inserted into the glue. When the liftable manhole neck 7 is installed at the lowest position, the manhole cover 10 is still higher than the retaining ring sleeve 6. When the liftable manhole neck 7 is installed upward, the lower end face is always lower than the annular sealing groove 501. Changing the installation height of the liftable manhole neck 7 can change the height of the manhole neck.

[0019] In use, first bury the housing 1 in a deep pit, then fill the surrounding area with soil to ensure the housing 1 is securely installed. Next, fix the inner neck sleeve 5 above the inner neck mounting ring 3 with screws, and seal the mating surfaces with glue. Then, insert the sealing ring 11 into the annular sealing groove 501. Next, fit the liftable well neck 7 over the inner neck sleeve 5 from top to bottom, sealing the gap with the sealing ring 11. Next, adjust the height of the liftable well neck 7 so that its end face is at a suitable height for installing the well cover 10. That is, after the well cover 10 is installed on the liftable well neck 7, its upper surface is flush with or slightly higher than the ground. Next, install all the retaining ring sleeves 6 into the retaining ring mounting groove 4, ensuring that the limiting boss 8 passes through the vertical waist-shaped groove 602, and simultaneously, the outer retaining ring 701 is embedded in the inner retaining groove 601. At this point, the liftable well neck 7 is lifted by the surrounding retaining ring sleeves 6. The baffle 9 is then fixed to the end of the limiting boss 8 with screws to prevent the retaining ring 6 from swinging outward due to external force, thus ensuring a firm connection between the retaining ring 6 and the liftable well neck 7. The well cover 10 is then installed on the upper end of the liftable well neck 7. Finally, soil is buried into the pit, leaving only the well cover 10 exposed at ground level. Since the well cover 10 is fixedly connected to the liftable well neck 7 with screws and the liftable well neck 7 is firmly buried in the soil, the well cover 10 will not loosen due to external interference. If the well cover 10 is too high or too low during later use, all retaining rings 6 can be removed again, and the height of the liftable well neck 7 can be readjusted to make the well cover 10 flush with the ground. The height of the well neck can be changed to the required height without adding or removing any parts, which is very convenient.

[0020] In summary, this height-adjustable well neck design transforms the original one-piece well neck structure into a split structure consisting of an inner neck sleeve 5 and a liftable well neck 7. The liftable well neck 7 is fitted onto the outside of the inner neck sleeve 5 and its height is fixed by a retaining ring sleeve 6. The height of the well neck can be changed by altering the installation height of the liftable well neck 7. Therefore, it is very convenient to change the height of the well neck to the required height during installation and maintenance without adding or removing any parts. A sealing groove and screw holes are provided at the upper end of the well neck. The well cover 10 is fixedly connected to the liftable well neck 7 with screws. Since the liftable well neck 7 is buried firmly in the soil, the well cover 10 will not loosen due to external interference.

[0021] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one" does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0022] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A height-adjustable well neck, comprising a housing (1), characterized in that: A connecting ring (2) is provided in the middle of the upper part of the box (1). An inner neck mounting ring (3) is provided below the connecting ring (2). A retaining ring mounting groove (4) is provided above the connecting ring (2). An inner neck sleeve (5) is fixedly installed above the inner neck mounting ring (3) by screws. An annular sealing groove (501) is provided on the outer surface above the inner neck sleeve (5). A retaining ring sleeve (6) is fixedly installed above the retaining ring mounting groove (4) by screws. A liftable well neck (7) is provided between the retaining ring sleeve (6) and the inner neck sleeve (5). A limiting boss (8) that passes through the retaining ring sleeve (6) is provided below the outer surface of the liftable well neck (7). A baffle (9) is fixedly installed on the outer side of the limiting boss (8) by screws. A well cover (10) is fixedly installed above the liftable well neck (7) by screws.

2. The height-adjustable well neck according to claim 1, characterized in that: A sealing structure is provided between the mating surfaces of the inner neck mounting ring (3) and the inner neck sleeve (5). The sealing structure includes a sealing groove on the upper surface of the inner neck mounting ring (3) and a sealing ring provided below the inner neck sleeve (5). The sealing groove is filled with glue, and the sealing ring is inserted into the glue.

3. The height-adjustable well neck according to claim 1, characterized in that: An outer retaining ring (701) is provided below the outer surface of the liftable neck (7), and an inner retaining groove (601) is provided on the inner wall of the retaining ring sleeve (6), and the outer retaining ring (701) is embedded in the inner retaining groove (601).

4. The height-adjustable well neck according to claim 1, characterized in that: The number of retaining rings (6) is evenly distributed around the retractable neck (7), and each retaining ring (6) is independent and can be disassembled and assembled separately.

5. The height-adjustable well neck according to claim 1, characterized in that: The inside of the retaining ring sleeve (6) is provided with several vertical waist-shaped grooves (602), the limiting boss (8) passes through the vertical waist-shaped grooves (602), the wall thickness around the vertical waist-shaped grooves (602) is thickened, and the baffle (9) presses on the outside of the thickened wall thickness.

6. The height-adjustable well neck according to claim 1, characterized in that: A gap is provided between the liftable neck (7) and the inner neck sleeve (5), and a sealing ring (11) is fitted inside the annular sealing groove (501). The sealing ring (11) seals the gap between the liftable neck (7) and the inner neck sleeve (5).

7. The height-adjustable well neck according to claim 1, characterized in that: A sealing structure is provided between the mating surfaces of the manhole cover (10) and the liftable manhole neck (7). The sealing structure includes a sealing groove opened on the upper surface of the liftable manhole neck (7) and a sealing ring provided below the manhole cover (10). The sealing groove is filled with glue, and the sealing ring is inserted into the glue.

8. The height-adjustable well neck according to claim 1, characterized in that: The materials of the liftable neck (7) and the inner neck sleeve (5) are both hard plastic. The inner wall of the lower end of the inner neck sleeve (5) and the inner wall of the upper end of the liftable neck (7) are both provided with reinforcing ribs.

9. The height-adjustable well neck according to claim 1, characterized in that: When the liftable neck (7) is installed at the lowest position, the well cover (10) is still higher than the retaining ring sleeve (6). When the liftable neck (7) is installed upwards, the lower end face is always lower than the annular sealing groove (501).

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