Novel centrifugal unit electrostatic grounding brush

Abstract

The utility model discloses a novel centrifugal unit static grounding electric brush, which comprises a static grounding electric brush main body, the static grounding electric brush main body comprises an electric brush head connecting point, a support, a flat-end perforated screw, a glass body, a jackscrew, a support plate and an electric brush head, and the jackscrew is installed and fixed inside the electric brush head. The support is fixedly installed at the corresponding position of centrifugal unit equipment through four screws, the electric brush supporting plate is located over the rotor, the electric brush head just makes contact with the rotor when falling down, and therefore static electricity is led out through the static electricity grounding electric brush, it is integrally guaranteed that the supporting structure is stable, the strength meets the equipment operation requirement, and the service life of the centrifugal unit equipment is prolonged. The service life is guaranteed, the rest parts except the electric brush head are all made of insulating material polyurethane, the strength is high, the stability is good, the visual glass body is used for observing the position condition of the electric brush in real time, the jackscrews with threads on the head and the rest parts being polished rods are adopted, and the position change between the rotating shaft and the shaft sleeve during operation of equipment is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of electrostatic grounding brush machinery, in particular to a novel electrostatic grounding brush for a centrifugal unit. Background Art

[0002] Because the production technology of electrostatic grounding brush devices for centrifugal compressor units in China was not mature before, the electrostatic grounding brushes used in centrifugal compressor units are currently imported from the United States, with a price of about 150,000 to 200,000 yuan per set, which is expensive, has high maintenance costs in the later stage, and has a long delivery cycle. In order to reduce the equipment procurement cost and shorten the delivery cycle, it is urgent to invent a domestic centrifugal unit electrostatic grounding brush device with good quality, low manufacturing cost and more favorable price to replace the imported centrifugal unit electrostatic grounding brush device.

[0003] The Chinese authorized patent document with publication number CN2556824Y is a grounding brush device, which involves an auxiliary device of the motor - a device for preventing and reducing the generation of motor shaft current. It includes a brush in contact with the motor shaft extension end, a brush holder connected and fixed to the brush for brush positioning, a brush clamping mechanism fixed on the brush holder consisting of bolts, nuts and springs sleeved on the bolts, a device connecting plate fixed to the brush holder, and a lead wire connected to the brush. The entire device is fixed to the outer cover of the motor bearing through a connecting plate, the brush is in contact with the motor shaft extension end, and the lead wire is connected to the base. In this way, it is equivalent to short-circuiting the motor shaft and the base, reducing or eliminating the shaft current, thereby protecting the bearing. The grounding brush device has a simple structure, is easy to manufacture, has low cost, is reliable to use, can effectively prevent the generation of shaft current, and prevent the shaft current from causing electrical corrosion to the bearing.

[0004] The above-mentioned prior art grounding brushes have high production and installation costs, low structural strength and complex installation, so it is necessary to develop a new type of centrifugal unit electrostatic grounding brush. Utility Model Content

[0005] The utility model aims to provide a novel electrostatic grounding brush for a centrifugal unit to solve the problems of high production and installation costs, low structural strength and complex installation of the grounding brush in the prior art mentioned in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a new type of electrostatic grounding brush for a centrifugal unit, including an electrostatic grounding brush body, the electrostatic grounding brush body including a brush head connection point, a support, a flat-head perforated screw, a glass body, a top screw, a support plate and a brush head, the support plate is installed at the lower end of the brush head, and a detachable structure is formed between the support plate and the brush head, the brush head connection point, the flat-head perforated screw and the glass body are all arranged on the support, the brush head connection point and the brush head are correspondingly connected, and the top screw is installed and fixed inside the brush head.

[0007] Based on the above, the surface of the support is provided with threaded fixing slots, and there are four threaded fixing slots in total.

[0008] Based on the above, the support is fixedly connected to the centrifuge unit equipment through four fastening screw assemblies passing through the threaded fixing slots.

[0009] Based on the above, the head of the top screw is provided with a threaded structure, and the surface of the top screw except the head is a smooth rod structure.

[0010] Based on the above, the vitreous body is a transparent visual structure.

[0011] Based on the above, two support plates are provided, and the two support plates are distributed in parallel.

[0012] Based on the above, the glass body is located in the middle of the support.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model fixes the support at the corresponding position of the centrifugal unit equipment by four screws, and makes the brush support plate be located just above the rotor. When the brush head falls, it just contacts the rotor, so that the static electricity is conducted through the static grounding brush. The equipment as a whole ensures that the support structure is stable, the strength meets the equipment operation requirements, and the service life is guaranteed. The rest of the parts except the brush head are made of insulating material polyurethane, which has high strength and good stability. A visual glass body is used to observe the position of the brush in real time. A top screw with a thread on the head and a smooth rod on the rest is used to avoid position changes between the rotating shaft and the sleeve when the equipment is running. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the support installation structure of the utility model;

[0016] Figure 2 It is the overall front view of the utility model;

[0017] Figure 3 It is a side view of the utility model.

[0018] In the figure: 1. Brush head connection point; 2. Support; 3. Flat head perforated screw; 4. Glass body; 5. Top screw; 6. Support plate; 7. Threaded fixing slot; 8. Electrostatic grounding brush body; 9. Brush head. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] See also Figure 1-3 The utility model provides an embodiment: a novel centrifugal unit electrostatic grounding brush, including an electrostatic grounding brush body 8, the electrostatic grounding brush body 8 includes a brush head connection point 1, a support 2, a flat head perforated screw 3, a glass body 4, a top screw 5, a support plate 6 and a brush head 9, the support plate 6 is installed at the lower end of the brush head 9, and a detachable structure is formed between the support plate 6 and the brush head 9. The brush head connection point 1, the flat head perforated screw 3 and the glass body 4 are all arranged on the support 2, the brush head connection point 1 and the brush head 9 are correspondingly connected, the top screw 5 is installed and fixed inside the brush head 9, and the rest of the brush head 9 is made of insulating material polyurethane, which has high strength and good stability.

[0021] Furthermore, the surface of the support 2 is provided with threaded fixing slots 7, and there are four threaded fixing slots 7 in total.

[0022] Furthermore, the support 2 is fixedly connected to the centrifuge unit equipment through four fastening screw assemblies passing through the threaded fixing slots 7, and the four screws on the support 2 are used to connect the entire bracket to the corresponding position of the equipment.

[0023] Furthermore, the head of the top screw 5 is provided with a threaded structure, and the surface of the top screw 5 except the head is a smooth rod structure. The top screw 5 with threads on the head and the rest being a smooth rod is used to avoid position changes between the rotating shaft and the sleeve when the equipment is running.

[0024] Furthermore, the glass body 4 is a transparent visual structure, and the visible glass body is used to observe the position of the brush in real time.

[0025] Furthermore, two support plates 6 are provided, and the two support plates 6 are distributed in parallel.

[0026] Furthermore, the glass body 4 is located at the middle position of the support 2 .

[0027] Working principle: when in use, the brush head connection point 1, the flat-head perforated screw 3 and the glass body 4 are all arranged on the support 2. The glass body 4 is a transparent visual structure. The visible glass body is used to observe the brush position in real time. The support 2 is fixedly connected to the centrifugal unit equipment through four fastening screw assemblies through the threaded fixing slot 7. The four screws on the support 2 are used to connect the entire bracket to the corresponding position of the equipment. The brush head connection point 1 and the brush head 9 are correspondingly connected. The top screw 5 is installed and fixed inside the brush head 9. The top screw 5 with a thread on the head and a bare rod is used to avoid position changes between the rotating shaft and the sleeve when the equipment is running. The support 2 is fixedly installed at the corresponding position of the centrifugal unit equipment by four screws, and the brush support plate 6 is located directly above the rotor. When the brush head 9 falls, it just contacts the rotor, thereby conducting static electricity through the static grounding brush. The overall equipment ensures that the supporting structure is stable, the strength meets the equipment operation requirements, and the service life is guaranteed.

[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0029] The standard parts used in this application document can all be purchased from the market, and the specific connection methods of each part are connected by conventional means such as mature bolts, rivets, welding, etc. in the prior art. In addition, the machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, so no specific description is given here.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel electrostatic grounding brush for a centrifugal unit, comprising an electrostatic grounding brush body (8), characterized in that: The electrostatic grounding brush body (8) comprises a brush head connection point (1), a support (2), a flat-head perforated screw (3), a glass body (4), a top screw (5), a support plate (6) and a brush head (9); the support plate (6) is mounted at the lower end of the brush head (9); a detachable structure is provided between the support plate (6) and the brush head (9); the brush head connection point (1), the flat-head perforated screw (3) and the glass body (4) are all arranged on the support (2); the brush head connection point (1) and the brush head (9) are correspondingly connected; and the top screw (5) is fixedly installed inside the brush head (9).

2. According to claim 1, a new type of centrifugal unit electrostatic grounding brush is characterized by: The surface of the support (2) is provided with threaded fixing slot holes (7), and a total of four threaded fixing slot holes (7) are provided.

3. A novel centrifugal unit electrostatic grounding brush according to claim 2, characterized in that: The support (2) is fixedly connected to the centrifuge unit equipment by means of four fastening screw assemblies passing through the threaded fixing slot holes (7).

4. According to claim 1, a new type of centrifugal unit electrostatic grounding brush is characterized by: The head of the top screw (5) is provided with a threaded structure, and the surface of the top screw (5) except the head is a smooth rod structure.

5. According to claim 1, a new type of centrifugal unit electrostatic grounding brush is characterized in that: The glass body (4) is a transparent visual structure.

6. A novel centrifugal unit electrostatic grounding brush according to claim 1, characterized in that: Two support plates (6) are provided in total, and the two support plates (6) are arranged in parallel.

7. The novel centrifugal unit electrostatic grounding brush according to claim 1 is characterized by: The glass body (4) is located in the middle of the support (2).

Images