Dustproof device for bearing exhaust pipe

Abstract

The utility model provides a bearing exhaust pipe dustproof device which comprises an installation pipe, a filter unit is arranged at the end of the installation pipe, an installation unit is arranged on the installation pipe, the installation unit comprises a sealing assembly arranged in the installation pipe, and the sealing assembly is connected with an exhaust pipe so that the exhaust pipe can be communicated with the filter unit in a sealed mode. A threaded ring is arranged on the mounting pipe, a driving ring is in threaded connection with the threaded ring, a plurality of groups of abutting columns are annularly arranged on the mounting pipe, the abutting columns are arranged on the mounting pipe in a sliding and penetrating mode and connected with the driving ring through a propelling assembly, and rotation of the driving ring is converted into driving of the abutting columns to slide through the propelling assembly. The dustproof device is convenient and fast to install, compared with a traditional dustproof device, tedious installation procedures or integrated manufacturing procedures are not needed, the manufacturing cost is reduced, and the installation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing exhaust, in particular to a dust-proof device for a bearing exhaust pipe. Background Art

[0002] The bearings of a hydro-turbine generator set consist of turbine radial guide bearings, generator radial guide bearings, forward thrust bearings, and reverse thrust bearings. Injecting lubricating oil between the rotating journal and the fixed bearing shell significantly reduces friction between the shell and journal, dissipating the heat generated by friction, thereby protecting the journal and shell from damage. To prevent oil leakage from the turbine radial bearing end caps and oil accumulation in the sleeves, which could cause the bearing lubricating oil level to drop below the alarm level and affect safe operation of the unit, most current methods employ an exhaust pipe above the oil basin to improve the oil flow in the basin.

[0003] To prevent dust and other impurities from entering the bearing through the oil filling hole and clogging the exhaust pipe, thus affecting exhaust efficiency, dust-proof devices are often added to the exhaust pipe. For example, Chinese Utility Model Patent No. 201020061476.3 provides a bearing seat exhaust dust-proof sealing device. This device features a guide post check valve installed in the bearing seat exhaust hole. A spring ring is attached to the guide post of the guide post check valve, which is secured to the bearing seat oil filling hole by a nut. When the bearing seat is ventilated, the gas pushes up the guide post check valve to exhaust. Once exhaust is complete, the spring-loaded guide post check valve resets, preventing dust from entering in the opposite direction.

[0004] However, most of the existing bearing exhaust pipe dust prevention devices are fixed to the exhaust pipe by welding or are manufactured in an integrated manner with the exhaust pipe, which increases their use cost and installation cost, and the installation process is relatively complicated. Therefore, in view of this, a bearing exhaust pipe dust prevention device is proposed to solve the above technical problems. Utility Model Content

[0005] In response to the shortcomings of the existing technology, the utility model proposes a bearing exhaust pipe dust prevention device to solve the technical problems raised in the above background technology, that is, most of the existing bearing exhaust pipe dust prevention devices are fixed on the exhaust pipe by welding or manufactured in an integrated manner with the exhaust pipe, which leads to increased use cost and installation cost, and the installation process is more complicated.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a bearing exhaust pipe dust prevention device, comprising a mounting pipe, a filter unit provided at the end of the mounting pipe, a mounting unit provided on the mounting pipe, and the mounting unit comprising:

[0007] a sealing assembly, disposed in the mounting tube and connected to the exhaust pipe to seal and connect the exhaust pipe to the filter unit;

[0008] a threaded ring, disposed on the mounting tube, with a drive ring threadedly connected to the threaded ring; and

[0009] The abutment columns are arranged in a ring shape in multiple groups, are slidably passed through the mounting tube, and are connected to the driving ring through a propulsion assembly. The propulsion assembly converts the rotation of the driving ring into driving the abutment columns to slide.

[0010] In a preferred embodiment, the sealing assembly includes:

[0011] a sealing gasket, slidably disposed in the mounting tube along the axis of the mounting tube and abutting against the end of the exhaust pipe;

[0012] a stop ring, disposed on the sealing gasket; and

[0013] An elastic member is arranged on the inner side of the mounting tube and abuts against the stop ring.

[0014] In a preferred embodiment, a limiting ring is provided in the mounting tube, and the sealing gasket and the stop ring are both slidably sleeved on the limiting ring.

[0015] In a preferred embodiment, the propulsion assembly includes an abutment block provided at the end of the abutment column, and a conical surface is provided on the inner side of the drive ring, and the conical surface abuts against the abutment block.

[0016] In a preferred embodiment, the filtration unit comprises:

[0017] A connecting plate, detachably arranged at the end of the mounting tube;

[0018] A filter frame is provided on the connecting plate and communicates with the interior of the mounting tube; and

[0019] The filter screen is arranged in the filter frame.

[0020] In a preferred embodiment, the connecting plate is provided with a plurality of sets of threaded knobs, and the threaded knobs are threadedly connected to the ends of the mounting tubes.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] When in use, the device is put on the mounting tube of the bearing exhaust pipe and the driving ring is rotated. During the rotation, the driving ring controls multiple groups of abutment columns to slide simultaneously through the propulsion assembly until the abutment columns abut against the exhaust pipe, or when there are ridges or grooves on the exhaust pipe, the abutment columns are clamped on the ridges or grooves, so that the device can be quickly installed. After installation, the exhaust pipe and the filter unit are sealed and connected through the sealing assembly to prevent external impurities from entering the exhaust pipe through the end of the mounting tube, and the exhaust pipe is dust-proofed by the filter unit, which effectively improves the dust-proof effect. The installation is convenient and quick. Compared with traditional dust-proof devices, there is no need for cumbersome installation procedures or integrated manufacturing procedures, which reduces manufacturing costs and improves installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific embodiments of the present invention, the following briefly introduces the drawings required for use in the specific embodiments. In all the drawings, each element or part is not necessarily drawn according to the actual scale.

[0024] Figure 1 A schematic diagram of the three-dimensional structure of a bearing exhaust pipe dust prevention device provided by the utility model;

[0025] Figure 2 This is a cross-sectional view of a bearing exhaust pipe dust prevention device according to the present invention.

[0026] Reference numerals:

[0027] 101. Mounting tube; 102. Threaded ring; 103. Limiting ring; 104. Abutment block; 105. Abutment column;

[0028] 201. Sealing gasket; 202. Stop ring; 203. Elastic member;

[0029] 301. driving ring; 302. tapered surface;

[0030] 401, connecting plate; 402, threaded knob; 403, filter frame; 404, filter screen. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out that the following specific implementation methods are only used to further illustrate the present invention and cannot be understood as limiting the scope of protection of the present invention. Technicians in this field can make some non-essential improvements and adjustments to the present invention based on the above application content.

[0032] Example:

[0033] like Figure 1 、 2As shown, the present invention provides a dust prevention device for a bearing exhaust pipe, comprising a mounting tube 101, a filter unit disposed at the end of the mounting tube 101, a mounting unit disposed on the mounting tube 101, and a sealing assembly disposed within the mounting tube 101. The sealing assembly is connected to the exhaust pipe, and the exhaust pipe and the filter unit are sealed and connected via the sealing assembly. The sealing assembly includes a sealing gasket 201 slidably disposed within the mounting tube 101 along the axis of the mounting tube 101, and the sealing gasket 201 abuts the end of the exhaust pipe. A stop ring 202 is disposed on the sealing gasket 201, and an elastic member 203 is disposed on the inside of the mounting tube 101, abutting the stop ring 202.

[0034] When installing the device, the mounting tube 101 is placed on the exhaust pipe and pressed downward to compress the elastic member 203 via the stop ring 202. The elastic member 203 keeps the sealing gasket 201 in contact with the end of the exhaust pipe, thereby establishing a sealed connection between the exhaust pipe and the filter unit, preventing external dust from entering the exhaust pipe through the end of the mounting tube 101. A limiting ring 103 is provided inside the mounting tube 101, and both the sealing gasket 201 and the stop ring 202 are slidably mounted on the limiting ring 103. The limiting ring 103 limits the sliding range of the sealing gasket 201 and the stop ring 202 to prevent them from falling off.

[0035] like Figure 1 、 2 As shown, in this embodiment, a threaded ring 102 is provided on the mounting tube 101, onto which a drive ring 301 is threaded. Multiple groups of abutment posts 105 are circumferentially arranged on the mounting tube 101. The abutment posts 105 are slidably inserted along their axes through the mounting tube 101 and are connected to the drive ring 301 via a propulsion assembly. The propulsion assembly converts the rotation of the drive ring 301 into sliding movement of the abutment posts 105. The propulsion assembly includes an abutment block 104 provided at the end of the abutment post 105. A tapered surface 302 is provided on the inner side of the drive ring 301, which abuts against the abutment block 104.

[0036] After the mounting tube 101 is placed on the exhaust pipe, the drive ring 301 is rotated to drive it to slide along the axis of the mounting tube 101. During the sliding process, the drive ring 301 pushes the abutment post 105 along its axis through the contact between the tapered surface 302 and the abutment block 104 until the abutment post 105 abuts the exhaust pipe, completing the installation of the dustproof device. If the exhaust pipe is provided with a groove or ridge, the abutment post 105 can be locked into the corresponding position of the groove or ridge to ensure a more secure installation of the device.

[0037] like Figure 1 、 2As shown, in this embodiment, the filter unit includes a connecting plate 401, which is equipped with multiple sets of threaded knobs 402. The threaded knobs 402 are threadedly connected to the end of the mounting tube 101. The connecting plate 401 is equipped with a filter frame 403 that communicates with the interior of the mounting tube 101. The filter frame 403 is equipped with a filter screen 404. After the device is installed, the filter screen 404 can filter the air entering the exhaust pipe to prevent dust from entering the exhaust pipe. The filter screen 404 is also supported and protected by the filter frame 403 to prevent deformation and damage. After a period of use, the filter frame 403 can be removed by turning the threaded knobs 402 to facilitate replacement of the filter screen 404.

[0038] Specific usage and beneficial effects of this utility model:

[0039] When the device is in use, the mounting tube 101 is put on the bearing exhaust pipe, and the driving ring 301 is rotated. During the rotation, the driving ring 301 quickly controls the sliding of multiple groups of abutting columns 105 through the abutment of the conical surface 302 and the abutment block 104 until the abutment columns 105 abut against the exhaust pipe, or when there are ridges or grooves on the exhaust pipe, the abutment columns 105 are clamped on the ridges or grooves, so that the device can be quickly installed. After installation, the exhaust pipe and the filter unit are sealed and connected through the sealing component to prevent external impurities from entering the exhaust pipe through the end of the mounting tube 101, and the exhaust pipe is dust-proofed by the filter unit, which effectively improves the dust-proof effect and is convenient and quick to install. Compared with traditional dust-proof devices, it does not require cumbersome installation procedures or integrated manufacturing procedures, reduces manufacturing costs, and improves installation efficiency.

[0040] The above shows and describes the basic principles, main features, and advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments. It is obvious to those skilled in the art that modifications or improvements can be made based on the present invention. Therefore, such modifications or improvements made without departing from the spirit of the present invention are within the scope of protection claimed by the present invention.

Claims

1. A dust-proof device for a bearing exhaust pipe, characterized in that: The invention comprises a mounting tube (101), a filter unit is provided at the end of the mounting tube (101), and a mounting unit is provided on the mounting tube (101), and the mounting unit comprises: a sealing assembly, disposed in the mounting tube (101) and connected to the exhaust pipe to seal and connect the exhaust pipe to the filter unit; A threaded ring (102) is provided on the mounting tube (101), and a driving ring (301) is screwed onto the threaded ring (102); and The abutment columns (105) are arranged in a plurality of groups in an annular direction, are slidably mounted on the mounting tube (101), and are connected to the driving ring (301) via a propulsion assembly. The propulsion assembly converts the rotation of the driving ring (301) into driving the abutment columns (105) to slide.

2. A bearing exhaust pipe dust prevention device according to claim 1, characterized in that: The sealing assembly includes: A sealing gasket (201) is slidably disposed in the mounting tube (101) along the axis of the mounting tube (101) and abuts against the end of the exhaust pipe; a stop ring (202), disposed on the sealing gasket (201); and An elastic member (203) is arranged inside the mounting tube (101) and abuts against the stop ring (202).

3. A bearing exhaust pipe dust prevention device according to claim 2, characterized in that: A limiting ring (103) is provided in the installation tube (101), and the sealing gasket (201) and the stop ring (202) are both slidably sleeved on the limiting ring (103).

4. The dust-proof device for a bearing exhaust pipe according to claim 1, characterized in that: The propulsion assembly includes an abutment block (104) arranged at the end of the abutment column (105); a conical surface (302) is provided on the inner side of the drive ring (301); and the conical surface (302) abuts against the abutment block (104).

5. The dust-proof device for a bearing exhaust pipe according to claim 1, characterized in that: The filtering unit includes: A connecting plate (401) is detachably arranged at the end of the mounting tube (101); a filter frame (403), which is arranged on the connecting plate (401) and communicates with the interior of the mounting tube (101); and The filter screen (404) is arranged in the filter frame (403).

6. A bearing exhaust pipe dust prevention device according to claim 5, characterized in that: The connecting plate (401) is provided with a plurality of sets of threaded knobs (402), and the threaded knobs (402) are threadedly connected to the ends of the mounting tubes (101).

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