Rotating shaft sealing device for automatic backwashing filter

Abstract

The utility model discloses a rotating shaft sealing device for an automatic backwashing filter, and relates to the related technical field of backwashing filters. The device comprises a shell, a fixed disc and an upper mounting disc, a mounting ring is fixed to the upper portion of the peripheral side of the shell, the fixed disc is arranged at the top end of the mounting ring, a mounting sleeve is fixed to the center of the top end of the fixed disc, the upper mounting disc is arranged at the top end of the mounting sleeve, and a movable sleeve is fixed to the bottom end of the upper mounting disc and movably connected into the mounting sleeve. And two inner sealing rings are embedded and fixed on the peripheral side and the inner wall of the movable sleeve. According to the rotating shaft sealing device of the automatic backwashing filter, the shell, the fixed disc and the upper mounting disc are arranged, so that the problems that the rotating shaft sealing device of the automatic backwashing filter is relatively complicated in mounting operation and inconvenient to disassemble and maintain are solved, and the rotating shaft sealing device has the advantages that the mounting operation is simpler and more convenient; and disassembly and maintenance are more convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field related to backwashing filters, in particular to a rotary shaft sealing device for automatic backwashing filters. Background Art

[0002] Automatic backwash filter is a common water treatment equipment, which automatically cleans impurities on the filter screen through rotating brushes or other mechanisms to maintain filtering efficiency. The rotating shaft is one of the key components in this filter, which is responsible for driving the brush or cleaning mechanism to rotate. In order to ensure the long-term stable operation of the filter, the sealing device of the rotating shaft must be able to prevent moisture and impurities from leaking, while reducing wear and maintenance requirements. During the maintenance process, the rotating shaft and the filter are sealed by the rotating shaft sealing device, but it still has the following disadvantages in actual use:

[0003] When the rotating shaft sealing device of the automatic backwashing filter is working, the rotating sealing device usually uses packing seal. As the equipment is running, the packing is worn and in order to ensure the sealing effect, the packing needs to be frequently compressed, which increases the operation of on-site inspection and packing compression, increases the labor intensity of workers, and inevitably leads to medium leakage;

[0004] When the rotating shaft sealing device of the automatic backwash filter is working, when it needs to be disassembled for maintenance, in order to install and tighten the rotating shaft and to ensure the sealing effect, 5 to 7 groups of packing are usually used. When replacement is required, each group of packing needs to be taken out layer by layer. The installation space of the stuffing box is relatively small, the steps for removing the packing are cumbersome, and the equipment downtime is also relatively long. Utility Model Content

[0005] The utility model aims to provide a rotating shaft sealing device for an automatic backwashing filter, which solves the problem that the installation operation of the rotating shaft sealing device of the automatic backwashing filter is complicated and the disassembly and maintenance are not convenient by arranging a shell, a fixed plate and an upper mounting plate.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model discloses a rotary shaft sealing device for an automatic backwashing filter, comprising a shell, a fixed disk and an upper mounting disk, a mounting ring is fixed to the upper part of the circumferential side of the shell, a fixed disk is arranged on the top of the mounting ring, a mounting sleeve is fixed to the center of the top of the fixed disk, an upper mounting disk is arranged on the top of the mounting sleeve, a movable sleeve is fixed to the bottom end of the upper mounting disk, the movable sleeve is movably connected in the mounting sleeve, two inner sealing rings are inlaid and fixed on the circumferential side and the inner wall of the movable sleeve, when working, the shell provides a flow-through effect for the filtered liquid, the upper mounting disk is arranged on the fixed disk through the mounting sleeve, the movable sleeve is fixed on the fixed disk through the upper mounting disk, and the gap between the mounting sleeve and the shaft body is closed through the inner sealing ring.

[0008] Furthermore, the top of the mounting ring is provided with mounting screw holes in a circular array, an upper sealing ring is embedded and fixed between the mounting screw holes and the top edge of the shell, the mounting ring is threadedly connected to the mounting bolts through the mounting screw holes, and the gap between the mounting ring and the fixed plate is closed by the upper sealing ring.

[0009] Furthermore, mounting bolts are inserted through the fixing plate in a circular array, and the mounting bolts are threadedly connected in the mounting screw holes, so that the fixing plate and the mounting bolts are installed and tightened.

[0010] Furthermore, the upper mounting plate outside the movable sleeve is movably connected with fastening bolts in a circular array, and a rotating ring is fixed around the fastening bolts in the upper mounting plate. The rotating ring is movably connected in the upper mounting plate. The movable sleeve cooperates with the fastening bolts and the rotating ring, so that when the fastening bolts rotate in the threaded blind hole, the upper mounting plate is driven to rise and fall.

[0011] Furthermore, the top of the mounting sleeve is provided with threaded blind holes in an annular array, and the fastening bolts below the upper mounting plate are threadedly connected in the threaded blind holes, so that the mounting sleeve and the upper mounting plate are fastened.

[0012] Furthermore, a shaft body is movably connected through the upper mounting plate, the movable sleeve and the fixed plate, the inner sealing ring is movably connected to the peripheral side of the shaft body, and the upper mounting plate transmits power through the shaft body.

[0013] The utility model has the following beneficial effects:

[0014] The utility model solves the problem of complicated installation operation of the rotating shaft sealing device of the automatic backwashing filter by arranging a shell, a fixed disk and an upper mounting disk. The fixed disk is placed on the mounting ring, and then the mounting bolts are inserted into the fixed disk and screwed into the mounting screw holes on the mounting ring. After being screwed in, the shell and the fixed disk are installed together, and then the shaft body can be extended into the mounting sleeve, inserted into the fixed disk, and extended into the shell. At this time, the movable sleeve under the upper mounting disk can be sleeved on the circumference of the shaft body and pressed into the mounting sleeve, and subsequent installation operations can be carried out, so that when the rotating shaft is installed, there is no need to place multiple layers of fillers layer by layer, which makes the installation operation of the rotating shaft sealing device of the automatic backwashing filter simpler.

[0015] The utility model solves the problem that the rotary shaft sealing device of the automatic backwashing filter is not convenient to disassemble and overhaul by arranging a fixed plate and an upper mounting plate. When disassembling, the fastening bolt is directly rotated, and the fastening bolt is movably connected to the upper mounting plate through a rotating ring. When rotating, the fastening bolt drives the upper mounting plate to rise, so that when working, the movable sleeve is driven to rise in the mounting sleeve, and then the movable sleeve is pulled to remove the movable sleeve and the shaft body together. At this time, the shaft body and the movable sleeve are pulled to separate the shaft body and the movable sleeve, which makes it more convenient to disassemble and overhaul the rotary shaft sealing device of the automatic backwashing filter when working. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 A three-dimensional diagram of the assembly structure of a rotary shaft sealing device for an automatic backwashing filter;

[0018] Figure 2 It is a three-dimensional diagram of the shell structure;

[0019] Figure 3 It is a three-dimensional diagram of the fixed disk structure;

[0020] Figure 4 It is a three-dimensional diagram of the cross-sectional structure of the upper mounting plate;

[0021] Figure 5 This is a three-dimensional diagram of the axis structure.

[0022] Reference numerals:

[0023] 1. Shell; 101. Mounting ring; 102. Mounting screw hole; 103. Upper sealing ring; 2. Fixed plate; 201. Mounting bolt; 202. Mounting sleeve; 203. Threaded blind hole; 3. Upper mounting plate; 301. Fastening bolt; 302. Rotating ring; 303. Movable sleeve; 304. Inner sealing ring; 4. Shaft. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Specific embodiment 1

[0025] See also Figure 1-5 The utility model is a rotary shaft sealing device for an automatic backwashing filter, comprising a housing 1, a fixed disk 2 and an upper mounting disk 3. A mounting ring 101 is fixed to the upper part of the peripheral side of the housing 1. When the housing 1 is working, the filtered liquid is transferred. The fixed disk 2 is mounted on it through the mounting ring 101. The top of the mounting ring 101 is provided with a fixed disk 2, and a mounting sleeve 202 is fixed thereon through the fixed disk 2. The top center of the fixed disk 2 is fixed with a mounting sleeve 202, and the upper mounting disk 3 is fixed with the mounting sleeve 202. 3 is arranged on it, and an upper mounting plate 3 is arranged on the top of the mounting sleeve 202. The upper mounting plate 3 provides a connection function between the movable sleeve 303 and the mounting sleeve 202 during installation. A movable sleeve 303 is fixed to the bottom end of the upper mounting plate 3. The movable sleeve 303 is movably connected in the mounting sleeve 202. Two inner sealing rings 304 are inlaid and fixed on the circumference and inner wall of the movable sleeve 303. The two inner sealing rings 304 are staggered to each other, so that when working, they cooperate to close the gap between the shaft body 4 and the mounting sleeve 202.

[0026] Specifically, the top of the mounting ring 101 is provided with mounting screw holes 102 in a circular array, and an upper sealing ring 103 is embedded and fixed between the mounting screw holes 102 and the top edge of the shell 1. The mounting ring 101 is installed through the mounting screw holes 102, and the upper sealing ring 103 is pressed against the fixed disk 2 to seal the gap between the mounting ring 101 and the fixed disk 2.

[0027] Furthermore, mounting bolts 201 are inserted through the fixing plate 2 in a circular array, and the mounting bolts 201 are threadedly connected in the mounting screw holes 102, so that the mounting ring 101 and the fixing plate 2 are installed together.

[0028] The operation process of this embodiment is as follows: when working, first put the fixed disk 2 on the mounting ring 101, then insert the mounting bolt 201 into the fixed disk 2, and then screw it into the mounting screw hole 102 on the mounting ring 101, and after tightening, the shell 1 and the fixed disk 2 are installed together, and then the shaft body 4 can be extended into the mounting sleeve 202, inserted into the fixed disk 2, and extended into the shell 1. At this time, the movable sleeve 303 under the upper mounting disk 3 can be sleeved on the side of the shaft body 4 and pressed into the mounting sleeve 202, and subsequent installation operations can be carried out. Specific embodiment 2

[0029] See also Figure 1 , 3 , 4, 5, on the basis of the specific embodiment 1, the upper mounting plate 3 outside the movable sleeve 303 is movably connected with a fastening bolt 301 in an annular array, and a rotating ring 302 is fixed around the fastening bolt 301 in the upper mounting plate 3. The rotating ring 302 is movably connected in the upper mounting plate 3. When the movable sleeve 303 is close to the mounting sleeve 202 at the bottom of the mounting plate through the fastening bolt 301, the fastening bolt 301 is rotated so that the fastening bolt 301 is screwed into the threaded blind hole 203 on the mounting sleeve 202, so that when working, the movable sleeve 303 and the mounting sleeve 202 are installed and fastened. When disassembling, the fastening bolt 301 is directly rotated. The fastening bolt 301 is movably connected in the upper mounting plate 3 through the rotating ring 302. When rotating, the fastening bolt 301 drives the upper mounting plate 3 to rise, so that when working, the movable sleeve 303 is driven to rise in the mounting sleeve 202.

[0030] Specifically, the top of the mounting sleeve 202 is provided with threaded blind holes 203 in an annular array, and the fastening bolts 301 below the upper mounting plate 3 are threadedly connected in the threaded blind holes 203 , and the mounting sleeve 202 is installed in conjunction with the fastening bolts 301 through the threaded blind holes 203 .

[0031] Furthermore, a shaft body 4 is movably connected through the upper mounting plate 3, the movable sleeve 303 and the fixed plate 2, and an inner sealing ring 304 is movably connected to the peripheral side of the shaft body 4, and transmission is performed when the shaft body 4 rotates.

[0032] The operation process of this embodiment is as follows: during operation, when the movable sleeve 303 is close to the mounting sleeve 202 at the bottom of the mounting plate through the fastening bolt 301, the fastening bolt 301 is rotated so that the fastening bolt 301 is screwed into the threaded blind hole 203 on the mounting sleeve 202, so that during operation, the movable sleeve 303 and the mounting sleeve 202 are installed and fastened. When disassembling, the fastening bolt 301 is directly rotated, and the fastening bolt 301 is movably connected to the upper mounting plate 3 through the rotating ring 302. During rotation, the fastening bolt 301 drives the upper mounting plate 3 to rise, so that during operation, the movable sleeve 303 is driven to rise in the mounting sleeve 202, and then the movable sleeve 303 is pulled to remove the movable sleeve 303.

[0033] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0034] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A rotary shaft sealing device for an automatic backwashing filter, comprising a housing (1), a fixed plate (2) and an upper mounting plate (3), characterized in that: A mounting ring (101) is fixed to the upper part of the circumferential side of the shell (1), a fixed disk (2) is arranged at the top of the mounting ring (101), a mounting sleeve (202) is fixed at the center of the top of the fixed disk (2), an upper mounting disk (3) is arranged at the top of the mounting sleeve (202), a movable sleeve (303) is fixed to the bottom of the upper mounting disk (3), the movable sleeve (303) is movably connected in the mounting sleeve (202), and two inner sealing rings (304) are embedded and fixed on the circumferential side and inner wall of the movable sleeve (303).

2. A rotary shaft sealing device for an automatic backwashing filter according to claim 1, characterized in that: The top end of the mounting ring (101) is provided with mounting screw holes (102) in a circular array, and an upper sealing ring (103) is embedded and fixed between the mounting screw holes (102) and the top edge of the housing (1).

3. A rotary shaft sealing device for an automatic backwashing filter according to claim 1, characterized in that: The fixing plate (2) has mounting bolts (201) inserted therein in a circular array, and the mounting bolts (201) are threadedly connected in the mounting screw holes (102).

4. A rotary shaft sealing device for an automatic backwashing filter according to claim 1, characterized in that: The upper mounting plate (3) outside the movable sleeve (303) has fastening bolts (301) running through it in an annular array and movably connected thereto. A rotating ring (302) is fixed around the fastening bolts (301) in the upper mounting plate (3). The rotating ring (302) is movably connected in the upper mounting plate (3).

5. A rotary shaft sealing device for an automatic backwashing filter according to claim 4, characterized in that: The top of the mounting sleeve (202) is provided with threaded blind holes (203) in an annular array, and the fastening bolts (301) below the upper mounting plate (3) are threadedly connected in the threaded blind holes (203).

6. A rotary shaft sealing device for an automatic backwashing filter according to claim 1, characterized in that: A shaft body (4) is movably connected through the upper mounting plate (3), the movable sleeve (303) and the fixed plate (2), and the inner sealing ring (304) is movably connected to the circumference of the shaft body (4).

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