CN210678277U

CN210678277U - Mechanical seal end face grinding machine

Info

Publication number: CN210678277U
Application number: CN201921604853.0U
Authority: CN
Inventors: 张延青; 马静波
Original assignee: Huaneng Yimin Coal and Electricity Co Ltd
Current assignee: Huaneng Yimin Coal and Electricity Co Ltd
Priority date: 2019-09-25
Filing date: 2019-09-25
Publication date: 2020-06-05
Anticipated expiration: 2029-09-25

Abstract

The utility model discloses a mechanical seal end face grinds machine, include: the substrate is arranged at the bottom of the mechanical seal end face grinding machine, three fixing supports with equal height are vertically welded at the top of the substrate, and the three fixing supports are distributed on the substrate in an equilateral triangle shape; the end, far away from the base plate, of each fixing support is vertically and fixedly welded with the bottom surface of the supporting plate; the speed regulating motor is fixedly arranged in the middle position below the bottom surface of the supporting plate, and a transmission shaft lever of the speed regulating motor movably penetrates through the middle part of the supporting plate; the grinding disc is arranged above the supporting plate, the middle position of the top of the grinding disc is vertically and integrally provided with a limiting disc, the middle position of the bottom of the grinding disc is vertically welded with a connecting column, the connecting column is connected with the upper end of a transmission shaft rod of the speed regulating motor through a connecting clamp, the connecting clamp is tubular, and a bolt is screwed in the right side of the connecting clamp horizontally towards the inner thread. The grinding machine can repair the mechanical seal with the worn sealing surface, thereby greatly saving the expenditure.

Description

Mechanical seal end face grinding machine

Technical Field

The utility model relates to a grinding device technical field especially relates to a mechanical seal end face grinds machine.

Background

The mechanical seal of the power plant steam turbine water pump branch is generally required to be replaced by a new mechanical seal after being disassembled so as to ensure the tightness of the mechanical seal. This increases the maintenance cost of the apparatus.

The mechanical seal end face has strict requirements on the machining process of the mechanical seal, the movable ring and the static ring of the seal end face need extremely high parallelism and concentricity, and the seal face meets the mirror surface requirement, so that the common manual grinding means cannot meet the requirement.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a mechanical seal end-face grinding machine, it can restore the mechanical seal of sealed face wearing and tearing to save the expense of changing spare parts, saved the spending greatly.

In order to achieve the above object, the utility model provides a mechanical seal end face grinds machine, this mechanical seal end face grinds machine includes: the base plate is arranged at the bottom of the mechanical seal end face grinding machine, three fixing supports with equal height are vertically welded at the top of the base plate, the three fixing supports are distributed on the base plate in an equilateral triangle shape, and positioning holes are formed in four corners of the base plate; the end, far away from the base plate, of each fixing support is vertically and fixedly welded with the bottom surface of the supporting plate; the speed regulating motor is fixedly arranged in the middle position below the bottom surface of the supporting plate, and a transmission shaft lever of the speed regulating motor movably penetrates through the middle part of the supporting plate; the grinding disc is arranged above the supporting plate, the middle position of the top of the grinding disc is vertically and integrally provided with a limiting disc, the middle position of the bottom of the grinding disc is vertically welded with a connecting column, the connecting column is connected with the upper end of a transmission shaft rod of the speed regulating motor through a connecting clamp, the connecting clamp is tubular, and a bolt is screwed in the right side of the connecting clamp horizontally towards the inner thread.

In a preferred embodiment, the adjustable speed motor is a 1500W high torque low speed motor.

In a preferred embodiment, the diameter of the abrasive disc is 120mm, and the abrasive disc is a 5000-7500 mesh diamond grinding disc.

In a preferred embodiment, the limiting plate is a self-adjusting four-jaw self-aligning chuck.

In a preferred embodiment, the transmission shaft lever and the connecting column side wall of the speed regulating motor are provided with bolt holes horizontally aligned and matched with the bolts.

Compared with the prior art, according to the utility model discloses a mechanical seal end-face grinding machine has following advantage:

1. the sealed end face of preparation electromechanical seal grinds machine adopts the adjustable speed motor of big moment of torsion low rotational speed as the driving motor who grinds the machine, grinds the machine frame and adopts the aluminum alloy material to make, guarantees the frame indeformable, grinds the face of finishing and adopts aluminum plate cooperation metallography self-adhesion abrasive paper and cooperation to grind cream, abrasive and use together, the utility model discloses a design of grinding the machine can be restoreed the mechanical seal of sealed face wearing and tearing to saved the expense of changing spare part, saved the spending greatly.

2. Grinding the end face of the mechanical seal by adopting a low-speed motor and matching with a grinding disc, and replacing the grinding disc (carborundum grinding disc; #5000 meshes to #7500 meshes); the diamond grinding paste (W40, W20, W7 and W1) performs coarse grinding and fine grinding on the mechanical seal sealing end face, and the mechanical seal grinding effect achieves the mirror surface sealing effect.

Drawings

Fig. 1 is a schematic view of the overall structure of a mechanical seal end face grinding machine according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of a side view mechanism of an adjustable speed motor according to an embodiment of the present invention distributed at the bottom of a supporting plate.

Fig. 3 is a schematic view of a connection section structure of the connection fixture, the connection column and the transmission shaft of the speed regulating motor according to an embodiment of the present invention.

Description of the main reference numerals:

1-base plate, 2-locating hole, 3-speed regulating motor, 4-fixed support, 5-supporting plate, 6-limiting disc, 7-grinding disc, 8-connecting clamp, 9-connecting column, 10-bolt and 11-bolt hole.

Detailed Description

The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited by the following detailed description.

Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.

As shown in fig. 1-3, the preferred embodiment of the utility model provides a mechanical seal end face grinds machine, including base plate 1 and abrasive disc 7, base plate 1 top is welded perpendicularly three fixed bolster 4 of uniform height, three fixed bolster 4 are equilateral triangle distribution on base plate 1, three fixed bolster 4 keep away from base plate 1's one end and 5 bottom vertical fixed weldings of layer board, 5 bottom surface intermediate position vertical upwards fixed mounting of layer board have buncher 3, and buncher 3's transmission shaft pole activity runs through in 5 middle parts of layer board, locating hole 2 has all been seted up in base plate 1 four corners department, locating hole 2 is used for outside fixing bolt to fix on the workstation, reach stable effect.

The grinding disc 7 is arranged above the supporting plate 5, the limiting disc 6 is vertically and integrally arranged in the middle of the top of the grinding disc 7, the connecting column 9 is vertically welded in the middle of the bottom of the grinding disc 7, the connecting column 9 is connected with the upper end of a transmission shaft rod of the speed regulating motor 3 through a connecting clamp 8, the connecting clamp 8 is tubular, and the bolt 10 is screwed in the horizontal direction of the right side of the connecting clamp 8 to the internal thread. The mechanical seal grinding machine can greatly reduce the replacement frequency of the mechanical seal of the equipment after successful research, thereby saving the overhaul expenditure and improving the reusability of spare parts, the utility model adopts a low-speed motor to match with a grinding disc to grind the end surface of the mechanical seal, and the grinding disc (carborundum grinding disc; #5000 meshes to #7500 meshes) is replaced; the diamond grinding paste (W40, W20, W7 and W1) performs coarse grinding and fine grinding on the mechanical seal sealing end face, and the mechanical seal grinding effect achieves the mirror surface sealing effect.

In a preferred embodiment, the adjustable speed motor 3 is a 1500W high torque low speed motor.

In a preferred embodiment, the abrasive disc 7 is 120mm in diameter; the grinding disc 7 is a carborundum grinding disc with #5000 meshes to #7500 meshes. A1500W high-torque low-rotation-speed motor is adopted to drive a special grinding disc (the diameter of which is increased to 120mm) (carborundum grinding disc; #5000 meshes to #7500 meshes), and diamond grinding paste (W40, W20, W7 and W1) is matched for grinding in the grinding process.

In a preferred embodiment, the spacing plate 6 is a self-adjusting four-jaw self-aligning chuck. The self-adjusting four-jaw self-aligning chuck is adopted to fix the mechanical seal sealing end face so as to ensure the concentricity of the mechanical seal sealing end face during grinding, and the grinding acting force is adjusted by a manual method so as to ensure the grinding accuracy.

In a preferred embodiment, the transmission shaft lever of the speed regulating motor 3 and the side wall of the connecting column 9 are provided with bolt holes 11 horizontally aligned and matched with the bolts 10, and the bolts 10 are adopted to fix the transmission shaft lever of the connecting column 9 on the connecting clamp 8, so that the grinding disc 7 is convenient to replace in the later period.

The consumable materials in the technical scheme comprise: a grinding disc (carborundum grinding disc; #5000 meshes- #7500 meshes); diamond polishing pastes (W40, W20, W7 and W1) can perform rough polishing and fine polishing on the mechanical seal end face respectively.

The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.

Claims

1. A mechanical seal face grinder, characterized in that the mechanical seal face grinder comprises:

the base plate is arranged at the bottom of the mechanical seal end face grinding machine, three fixing supports with equal height are perpendicularly welded at the top of the base plate, the three fixing supports are distributed on the base plate in an equilateral triangle shape, and positioning holes are formed in four corners of the base plate;

the end, far away from the base plate, of each fixing support is vertically and fixedly welded with the bottom surface of the supporting plate;

the speed regulating motor is fixedly arranged in the middle position below the bottom surface of the supporting plate, and a transmission shaft lever of the speed regulating motor movably penetrates through the middle part of the supporting plate; and

the grinding disc is arranged above the supporting plate, a limiting disc is vertically and integrally arranged in the middle of the top of the grinding disc, a connecting column is vertically welded in the middle of the bottom of the grinding disc, the connecting column is connected with the upper end of a transmission shaft rod of the speed regulating motor through a connecting clamp, the connecting clamp is tubular, and a bolt is screwed in the horizontal inner thread on the right side of the connecting clamp in a penetrating mode.

2. The mechanically sealed end face grinder of claim 1, wherein the adjustable speed motor is a 1500W high torque low speed motor.

3. The mechanically sealed face grinder of claim 1, wherein the abrasive disk has a diameter of 120mm and is a 5000-7500 mesh diamond grit abrasive disk.

4. The mechanical seal face grinder of claim 1, wherein the limiting disk is a self-adjusting four-jaw self-aligning chuck.

5. The mechanical seal face grinder of claim 1, wherein the transmission shaft of the speed regulating motor and the side wall of the connecting column are provided with bolt holes horizontally aligned and matched with the bolts.