Quick-open type end cover sealing and fastening assembly

Abstract

The utility model discloses a quick-open type end cover sealing and fastening assembly which comprises an end cover, a cylinder and a hoop, the end cover seals the cylinder, the hoop is composed of a left hoop and a right hoop, fastening grooves are formed in the inner side of the left hoop and the inner side of the right hoop, and the fastening grooves wrap and extrude the edge of the end cover and the edge of the cylinder. A left rack and a right rack are arranged on the left hoop and the right hoop respectively, a cylindrical gear with a handle is arranged in the middle of the end cover, the cylindrical gear is rotatably connected with the end cover, the left rack and the right rack are parallel to each other and meshed with the cylindrical gear, and the left rack and the right rack are fixedly connected with the end cover through positioning pins and positioning blind holes formed in the end cover. Compared with the prior art, the sealing device is compact in structure, easy to assemble and disassemble and high in sealing stability.

Description

Technical Field

[0001] The utility model belongs to container sealing, in particular to a quick-opening end cover sealing and fastening assembly for sealingly connecting a filter end cover with a cylinder. Background Art

[0002] The filter is an indispensable device on the pipeline for conveying media. It is usually composed of a cylinder, an end cover, a stainless steel filter, a sewage discharge part, a transmission device and an electrical control part. After the water to be treated passes through the filter cartridge of the filter screen, its impurities are blocked. When cleaning is required, just take out the detachable filter cartridge and reinstall it after treatment. Existing filters usually use bolts to fix the end cover to prevent material leakage. When cleaning the filter cartridge, it often takes a lot of time to remove the bolts, making inspection and maintenance difficult.

[0003] In response to the above problems, patent document CN2780293Y discloses a sealing and fastening device for a filter cover, which discloses that the filter cover is fastened by a clamp connected by a hinge and having a conical inner wall surface. The clamp is fastened with a screw rod and a nut with positive and negative threads. When opening the filter cover, just rotate the hand wheel on the screw rod to loosen the clamp. However, the clamp of this solution needs to cover the entire cover and the edge of the cylinder, the structure is slightly complicated, and the installation and removal of the clamp is more troublesome. Utility Model Content

[0004] The utility model aims to overcome the problem that the installation and removal of the existing filter end cover is relatively time-consuming and labor-intensive, and to provide a quick-open end cover sealing and fastening assembly with compact structure, simple installation and removal operation, and high sealing stability.

[0005] The utility model adopts the following technical scheme to solve the technical problems: a quick-open end cover sealing and fastening assembly, comprising an end cover, a cylinder and a clamp, the end cover seals the cylinder, the clamp consists of a left-petal clamp and a right-petal clamp, the inner sides of the left-petal clamp and the right-petal clamp are provided with a fastening groove, the fastening groove covers and squeezes the end cover and the edge of the cylinder, the left-petal clamp and the right-petal clamp are respectively provided with a left rack and a right rack, a cylindrical gear with a handle is provided in the middle of the end cover, the cylindrical gear is rotatably connected to the end cover, the left rack and the right rack are parallel to each other and mesh with the cylindrical gear, and the left rack and the right rack are fixedly connected to the end cover through a locating pin and a locating blind hole arranged on the end cover.

[0006] Optionally, the cross section of the fastening groove is an isosceles trapezoid, and the end cover and the edge of the cylinder are provided with matching inclined surfaces.

[0007] Optionally, a guide sleeve is provided on the end cover, and the left rack and the right rack pass through the guide sleeves matched therewith respectively.

[0008] Optionally, a sealing gasket is provided between the end cover and the cylinder.

[0009] The usage and principle of the utility model are as follows: during installation, the fastening grooves of the left petal clamp and the right petal clamp are used to initially cover and squeeze the end cover and the edge of the cylinder body up and down, and the left rack and the right rack on the left petal clamp and the right petal clamp are placed on the end cover and mesh with the cylindrical gear in the middle of the end cover. At this time, the cylindrical gear is rotated by the handle, and the cylindrical gear drives the left rack and the right rack to move relative to each other, that is, the left rack moves to the right, and the right rack moves to the left, and the distance between the left petal clamp and the right petal clamp is reduced, and the left petal clamp and The fastening groove of the right petal clamp completely covers and squeezes the end cover and the edge of the cylinder up and down, so that the end cover and the cylinder fit tightly to form a stable seal, and then the left rack and the right rack are fixedly connected to the end cover through the positioning pin to maintain a stable sealing state, so as to achieve the purpose of locking the clamp and avoid the problem of loose sealing of the end cover due to failure to lock; when disassembling, remove the positioning pin and pull out the left petal clamp and the right petal clamp respectively. The cylindrical gear can be rotated by the handle to assist in pulling out the left petal clamp and the right petal clamp.

[0010] Compared with the prior art, the utility model has at least the following beneficial effects: the utility model has a compact structure, simple installation and disassembly operation, and high sealing stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the top view structure of the utility model;

[0012] Figure 2 It is a schematic diagram of the longitudinal section structure of the utility model;

[0013] The components described in the accompanying drawings are marked as follows: end cover 1, cylinder 2, left petal clamp 3, right petal clamp 4, fastening groove 5, left rack 6, right rack 7, cylindrical gear 8, positioning pin 9, guide sleeve 10, sealing gasket 11. DETAILED DESCRIPTION

[0014] Embodiment 1, below combines Figure 1 and Figure 2The utility model is further described, the quick-open end cover sealing and fastening assembly comprises an end cover 1, a cylinder 2 and a hoop, the end cover seals the cylinder, the hoop consists of a left petal hoop 3 and a right petal hoop 4, the curvature of the left petal hoop and the right petal hoop match the curvature of the end cover and the cylinder, a fastening groove 5 is provided on the inner side of the left petal hoop and the right petal hoop, the fastening groove has an upper and lower inner wall, the fastening groove covers and squeezes the edge of the end cover and the cylinder up and down, a left rack 6 and a right rack 7 are respectively provided on the left petal hoop and the right petal hoop, one end of the left rack is fixed to the upper middle part of the left petal hoop, one end of the right rack is fixed to the lower middle part of the right petal hoop, and a belt is provided in the middle of the end cover The cylindrical gear 8 of the handle is rotationally connected to the end cover. One of the forms of realizing the rotational connection is to fix a rotating shaft on the end cover, and the cylindrical gear is plugged into the rotating shaft. The left rack and the right rack are parallel to each other and mesh with the cylindrical gear. The left rack and the right rack are fixedly connected to the end cover through the locating pin 9 and the locating blind hole set on the end cover. A locating through hole is respectively provided on the left rack and the right rack, and several locating blind holes matching the locating through holes are provided on the end cover. When the left rack and the right rack move, when the locating through holes thereon and the locating blind holes on the end cover are on the same axis, the locating pin is inserted to locate the positions of the left rack and the right rack.

[0015] In order to make the fastening groove better cover and squeeze the edge of the end cover and the cylinder body and improve the sealing, the cross-section of the fastening groove is set to an isosceles trapezoid, and the edge of the end cover and the cylinder body is provided with a matching inclined surface. When the distance between the left petal clamp and the right petal clamp is reduced, the fastening groove will gradually increase the force of squeezing the end cover and the edge of the cylinder body up and down, so that the end cover and the cylinder body fit better.

[0016] In order to make the left rack and the right rack move more smoothly and to facilitate the arrangement of positioning blind holes on the end cover, two guide sleeves 10 are fixed on the end cover. The two guide sleeves are respectively arranged on the left and right sides, and are provided with a suitable spacing up and down. The left rack and the right rack respectively pass through the matching guide sleeves to mesh with the cylindrical gears, and the positioning blind holes are arranged at intervals along the guide track of the guide sleeves.

[0017] In order to improve the sealing performance of the connection between the end cover and the cylinder, a circular sealing gasket 11 is placed between the end cover and the cylinder.

[0018] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A quick-open end cover sealing and fastening assembly, comprising an end cover (1), a cylinder (2) and a clamp, wherein the end cover seals the cylinder, and is characterized in that: The clamp consists of a left petal clamp (3) and a right petal clamp (4). The inner sides of the left petal clamp and the right petal clamp are provided with fastening grooves (5), which cover and squeeze the end cover and the edge of the cylinder body. The left petal clamp and the right petal clamp are respectively provided with a left rack (6) and a right rack (7). A cylindrical gear (8) with a handle is provided in the middle of the end cover. The cylindrical gear is rotatably connected to the end cover. The left rack and the right rack are parallel to each other and mesh with the cylindrical gear. The left rack and the right rack are fixedly connected to the end cover via a positioning pin (9) and a positioning blind hole provided on the end cover.

2. The quick-open end cover sealing and fastening assembly according to claim 1, characterized in that: The cross section of the fastening groove is an isosceles trapezoid, and the end cover and the edge of the cylinder are provided with inclined surfaces matching with it.

3. The quick-open end cover sealing and fastening assembly according to claim 1, characterized in that: A guide sleeve (10) is provided on the end cover, and the left rack and the right rack respectively pass through the guide sleeves matched therewith.

4. The quick-open end cover sealing and fastening assembly according to claim 1, characterized in that: A sealing gasket (11) is provided between the end cover and the cylinder.

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