A manhole cover

Abstract

The utility model discloses a manhole cover, its technical scheme main points are including lower flange, upper flange, cover body, the cover body fixed connection is in upper flange and will the inner hole of upper flane close, sealing groove, upper flange and lower flange contact one side is provided with annular sealing groove, sealing pad, the annular sealing groove is provided with fixed connection in upper flange on sealing pad and sealing pad extends sealing groove, and first chamfer, lower flange is set to first chamfer in the inside of the side of upper flane, and first chamfer is close to the side of upper flane and is inclined to set to the direction of far away from lower flane axis and first chamfer is close to the side of upper flane and sealing pad close to the side of axis alignment, through the setting of first chamfer, make the water of easy spray in jar body to sealing pad close to the side of axis upper flane and lower flane part carry out the washing, need not manual washing alone and need not open manual cover, thereby prevent the outside dust and bacteria and enter jar body.

Description

Technical Field

[0001] This utility model relates to the technical field of coffee extraction, and more specifically, to a manhole cover. Background Technology

[0002] After coffee powder is extracted to obtain coffee concentrate, it usually needs to be stored or mixed with other ingredients before being packaged to form coffee products.

[0003] Canisters are used when storing coffee concentrate or mixing it with other ingredients. The canister has an opening at the top, and a manhole cover is installed at the opening. The manhole cover typically consists of a lower flange fixed to the canister opening, a cover body, and an upper flange connected to the cover body. One side of the upper flange is hinged to one side of the lower flange and can be secured to the lower flange using a handwheel.

[0004] To ensure a tight seal at the contact point between the upper and lower flanges, an annular sealing groove is typically provided on the side of the upper flange closer to the lower flange, and a sealing gasket is placed inside the annular sealing groove.

[0005] However, when rinsing the inside of the tank and the manhole cover through the spray pipe inside the tank, the part of the lower flange located near the lower flange axis of the sealing gasket is difficult to spray water due to the obstruction of the lower flange itself and the upper flange, which can easily lead to incomplete cleaning. It is necessary to manually open the manhole cover for separate cleaning, which is time-consuming and laborious. In addition, the process of opening the cover for cleaning allows external dust and bacteria to easily enter the tank, affecting the cleaning effect inside the tank. Utility Model Content

[0006] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a manhole cover that, through the setting of a first chamfer, allows the water sprayed inside the tank to easily rinse the upper and lower flange portions of the sealing gasket near the axis, eliminating the need for separate manual rinsing and the need to open the manhole cover, thereby preventing external dust and bacteria from entering the tank.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a manhole cover, including a lower flange, which is fixedly connected to the tank body; An upper flange, one side of which is hinged to one side of a lower flange and can be rotated to cover the lower flange; A cover body, which is fixedly connected to the upper flange and closes the inner hole of the upper flange; A sealing groove is provided on the side where the upper flange contacts the lower flange; A sealing gasket is provided in the annular sealing groove and is fixedly connected to the upper flange, with the sealing gasket extending out of the sealing groove. The lower flange has a first chamfer on its inner side near the upper flange. The first chamfer is inclined in a direction away from the axis of the lower flange on the side near the upper flange, and the side of the first chamfer near the upper flange is aligned with the side of the sealing gasket near the axis.

[0008] The present invention is further configured such that: the inner side of the upper flange near the lower flange is provided with a second chamfer, the second chamfer near the lower flange is inclined in a direction away from the axis of the upper flange, and the second chamfer near the lower flange is aligned with the sealing groove near the axis of the upper flange.

[0009] The present invention is further configured such that the distance between the sealing groove and the inner side of the upper flange is much smaller than the distance between the sealing groove and the outer side of the upper flange.

[0010] The present invention is further configured such that when the upper flange covers the lower flange, the upper flange and the lower flange are coaxial, and the inner diameters of the upper flange and the lower flange are equal.

[0011] The present invention is further configured to include a swing rod, one end of which is hinged to the tank body and the swing rod is capable of swinging until its axis is parallel to the lower flange axis; And a pressure block, which is threaded onto the swing arm to press the upper flange onto the lower flange by rotation.

[0012] The present invention is further configured to include a handwheel, which is fixedly connected to the pressure block.

[0013] In summary, the present invention has the following advantages over the prior art: the present invention, by setting the first chamfer, makes it easy for the water sprayed inside the tank to rinse the upper and lower flanges of the sealing gasket on the side near the axis, without the need for manual rinsing or opening the manual cover, thereby preventing external dust and bacteria from entering the tank. Attached Figure Description

[0014] Figure 1 This is a cross-sectional view of the overall structure of the embodiment; Figure 2 for Figure 1 Enlarged schematic diagram of part A; Figure 3 for Figure 1 Enlarged schematic diagram of part B.

[0015] In the diagram: 1. Lower flange; 2. Upper flange; 21. Sealing groove; 3. Cover; 4. Sealing gasket; 5. First chamfer; 6. Second chamfer; 7. Swing rod; 8. Pressure block; 9. Handwheel. Detailed Implementation

[0016] To enable those skilled in the art to better understand the technical solution of this utility model, the technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Based on the embodiments in this application, other similar embodiments obtained by those skilled in the art without creative effort should all fall within the scope of protection of this application. Furthermore, directional terms mentioned in the following embodiments, such as "up," "down," "left," and "right," are only for reference to the directions in the accompanying drawings; therefore, the directional terms used are for illustrative purposes and not for limiting the invention.

[0017] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments.

[0018] Example: A manhole cover, see attached document. Figure 1 -Appendix Figure 3 The system includes a lower flange 1, an upper flange 2, a cover 3, a sealing groove 21, a sealing gasket 4, and a first chamfer 5. The lower flange 1 is fixedly connected to the tank body. One side of the upper flange 2 is hinged to one side of the lower flange 1 and can be rotated to cover the lower flange 1. The cover 3 is fixedly connected to the upper flange 2 and closes the inner hole of the upper flange 2. An annular sealing groove 21 is provided on the side of the upper flange 2 that contacts the lower flange 1. A sealing gasket 4 is fixedly connected to the upper flange 2 and extends out of the sealing groove 21. The inner side of the lower flange 1 near the upper flange 2 is provided with a first chamfer 5. The first chamfer 5 near the upper flange 2 is inclined in a direction away from the axis of the lower flange 1 and the side of the first chamfer 5 near the upper flange 2 is aligned with the side of the sealing gasket 4 near the axis.

[0019] By setting the first chamfer 5, the distance between the first flange and the second flange on the side of the sealing gasket 4 near the axis is increased, which makes it easier for the sprayed water to enter between the first flange and the second flange to rinse the part of the first flange and the second flange on the side of the sealing gasket 4 near the axis. This eliminates the need for manual opening of the manhole cover for cleaning, saving manpower and preventing external dust and bacteria from entering the tank and causing contamination inside the tank.

[0020] Specifically, the inner side of the upper flange 2 near the lower flange 1 is set with a second chamfer 6. The second chamfer 6 near the lower flange 1 is inclined in a direction away from the axis of the upper flange 2. The second chamfer 6 near the lower flange 1 is aligned with the sealing groove 21 near the axis of the upper flange 2.

[0021] By setting the second chamfer 6, the distance between the first flange and the second flange on the side of the sealing gasket 4 closest to the axis can be further increased, making it easier for water to enter between the first flange and the second flange to flush the part of the first flange and the second flange on the side of the sealing gasket 4 closest to the axis.

[0022] Specifically, the distance between the sealing groove 21 and the inner side of the upper flange 2 is much smaller than the distance between the sealing groove 21 and the outer side of the upper flange 2. The farther the part between the first flange and the second flange is from the axis, the less likely the water sprayed into the tank will enter. However, by setting the position of the sealing groove 21, the distance between the sealing gasket 4 and the axis is greatly reduced, so that the parts of the first flange and the second flange located on the side of the sealing gasket 4 closer to the axis can be easily rinsed by water spray.

[0023] Specifically, when the upper flange 2 is fitted onto the lower flange 1, the upper flange 2 and the lower flange 1 are coaxial, and the inner diameters of the upper flange 2 and the lower flange 1 are equal.

[0024] Specifically, this embodiment also includes a swing rod 7 and a pressure block 8. One end of the swing rod 7 is hinged to the tank body and the swing rod 7 can swing until its axis is parallel to the axis of the lower flange 1. The pressure block 8 is threadedly connected to the swing rod 7 so as to press the upper flange 2 onto the lower flange 1 by rotation.

[0025] Specifically, this embodiment also includes a handwheel 9, which is fixedly connected to the pressure block 8.

[0026] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A manhole cover, characterized in that: Includes a lower flange (1), which is fixedly connected to the tank body; Upper flange (2), one side of which is hinged to the side of lower flange (1) and can be rotated to cover the lower flange (1); Cover (3), which is fixedly connected to the upper flange (2) and closes the inner hole of the upper flange (2); A sealing groove (21) is provided on the side of the upper flange (2) that contacts the lower flange (1); A sealing gasket (4) is provided in the annular sealing groove (21) and is fixedly connected to the upper flange (2) with the sealing gasket (4) extending out of the sealing groove (21); And a first chamfer (5), the inner side of the lower flange (1) near the upper flange (2) is set as a first chamfer (5), the first chamfer (5) near the upper flange (2) is inclined in a direction away from the axis of the lower flange (1) and the first chamfer (5) near the upper flange (2) is aligned with the sealing gasket (4) near the axis.

2. A manhole cover according to claim 1, characterized in that: The inner side of the upper flange (2) near the lower flange (1) is provided with a second chamfer (6). The second chamfer (6) near the lower flange (1) is inclined in a direction away from the axis of the upper flange (2). The second chamfer (6) near the lower flange (1) is aligned with the sealing groove (21) near the axis of the upper flange (2).

3. A manhole cover according to claim 1, characterized in that: The distance between the sealing groove (21) and the inner side of the upper flange (2) is much smaller than the distance between the sealing groove (21) and the outer side of the upper flange (2).

4. A manhole cover according to claim 3, characterized in that: When the upper flange (2) is fitted onto the lower flange (1), the upper flange (2) and the lower flange (1) are coaxial, and the inner diameters of the upper flange (2) and the lower flange (1) are equal.

5. A manhole cover according to claim 1, characterized in that: It also includes a swing rod (7), one end of which is hinged to the tank body and the swing rod (7) can swing to an axis parallel to the axis of the lower flange (1); And a pressure block (8), which is threadedly connected to the swing rod (7) to press the upper flange (2) against the lower flange (1) by rotation.

6. A manhole cover according to claim 5, characterized in that: It also includes a handwheel (9), which is fixedly connected to the pressure block (8).

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