Oil injector with noise reduction device

Abstract

The utility model relates to the technical field of oil ejectors, in particular to an oil ejector with a noise reduction device. The technical problems that when a conventional oil ejector works, loud noise can be generated at a filter screen and a diffusion pipe, and when the oil ejector is located in the environment for a long time, hearing of workers is reduced, and headache and other body discomfort are caused are solved; according to the technical scheme, the oil ejector with the noise reduction device comprises a mounting plate, a diffusion pipe, a mounting assembly, a noise reduction assembly, a conveying assembly, a filtering assembly and a connecting assembly; compared with a conventional oil ejector, when the oil ejector works, loud noise can be generated at a filter screen and a diffusion pipe, and when the oil ejector is located in the environment for a long time, hearing of workers is reduced, headache and other body discomfort are caused, and the working efficiency is improved. The sound insulation and noise reduction cover is mounted outside the diffusion pipe and the filter screen to limit sound waves in a limited cylindrical space for noise reduction, and the rest sound waves are secondarily absorbed by the external wave cotton, so that the transmitted sound waves are within a normal acceptable range.

Description

Technical Field

[0001] The utility model relates to the technical field of oil injectors, in particular to an oil injector with a noise reduction device. Background Art

[0002] The oil ejector is a type of jet pump, which consists of a nozzle, an oil inlet pipe, a diffuser and other components. It is the main equipment of a centralized lubrication oil station for steam turbines. When a conventional oil ejector is working, relatively large noise will be generated at the filter and the diffuser, which will be transmitted along the oil tank or pipeline. Being in this environment for a long time will lead to reduced hearing of workers, causing headaches and other physical discomforts. Noise pollution is a type of environmental pollution and has become a major hazard to mankind. In order to change this working environment and reduce the occurrence of occupational diseases, it is necessary to design an oil ejector with a noise reduction device. Utility Model Content

[0003] In order to overcome the problem, when a conventional injector is working, relatively loud noise will be generated at the filter and diffuser, and transmitted along the fuel tank or pipeline; being in this environment for a long time will cause the workers' hearing to decrease, causing headaches and other physical discomforts.

[0004] The technical solution of the utility model is: an injector with a noise reduction device, comprising a mounting plate, a mounting assembly, a noise reduction assembly, a diffusion tube, a conveying assembly, a filtering assembly and a connecting assembly, the diffusion tube runs through the mounting plate, the mounting assembly is arranged on the outside of the diffusion tube, the noise reduction assembly is arranged on the outside of the mounting assembly, the conveying assembly is arranged below the mounting plate, the filtering assembly is arranged below the diffusion tube, and four groups of connecting assemblies are arranged, two groups of connecting assemblies are arranged on the outside of the diffusion tube, and the other two groups of connecting assemblies are arranged on the outside of the conveying assembly.

[0005] Preferably, the noise reduction component is supported and installed by setting an installation component, the inside of the diffuser and the filter component are soundproofed by setting a noise reduction component, the working oil and the lubricating oil are allowed to exchange energy by setting a diffuser, the high-speed working oil is sprayed into the diffuser by setting a conveying component, the lubricating oil is filtered by setting a filter component, and the conveying component and the diffuser are installed and connected by setting a connecting component.

[0006] Preferably, the mounting assembly includes an annular boss and a noise reduction cover frame, the annular boss is fixedly mounted on the outside of the diffuser, the noise reduction cover frame is fixedly mounted below the annular boss, and the lower end of the noise reduction cover frame is located in the middle of the filter assembly; the noise reduction cover frame is supported and mounted by arranging the annular boss, and the noise reduction assembly is supported and mounted by arranging the noise reduction cover frame, and the noise at the diffuser and the filter assembly is confined to a limited cylindrical space, and the sound waves will gradually attenuate after refraction or reflection inside the cylinder.

[0007] Preferably, the noise reduction component includes noise reduction corrugated cotton and stainless steel tie. The noise reduction corrugated cotton is arranged on the outside of the noise reduction cover frame. The stainless steel tie is arranged on the outside of the noise reduction corrugated cotton. There are multiple groups of stainless steel tie. The noise reduction corrugated cotton is fixedly connected to the noise reduction cover frame through the stainless steel tie. The noise reduction corrugated cotton is arranged to perform secondary absorption on the remaining sound waves absorbed by the noise reduction cover frame.

[0008] Preferably, the delivery assembly includes an oil inlet pipe, a sleeve and a nozzle. The oil inlet pipe passes through the mounting plate, the oil inlet pipe is arranged below the mounting plate, one end of the oil inlet pipe is fixedly connected to the sleeve, and the nozzle is fixedly installed above the sleeve; the working oil is delivered to the inside of the device by arranging the oil inlet pipe, the nozzle is connected to the oil inlet pipe by arranging the sleeve, and the nozzle is arranged to spray high-speed working oil into the inside of the filter assembly.

[0009] Preferably, the filter assembly includes a mounting circular plate and a filter screen, wherein the mounting circular plate is fixedly installed below the diffuser, and the filter screen is fixedly installed below the mounting circular plate; the filter screen is supported and installed by setting the mounting circular plate, and the lubricating oil is filtered by setting the filter screen to improve the quality of the lubricating oil.

[0010] Preferably, the filter assembly also includes a base and an installation cavity. The base is fixedly installed inside the filter screen, and an installation cavity is provided inside the base. The base is provided to shield the lubricating oil so that the lubricating oil can only enter the interior of the filter assembly through the filter screen. The installation cavity is provided to provide installation space for the sleeve and the nozzle.

[0011] Preferably, the connecting assembly includes flange rings and bolts. Four groups of flange rings are provided, two groups of flange rings are fixedly installed on the outside of the diffuser, and the other two groups of flange rings are fixedly installed on the outside of the oil inlet pipe. Multiple groups of bolts are provided, and the bolts penetrate the flange rings; the diffuser and the mounting plate, the diffuser and the mounting circular plate, the oil inlet pipe and the mounting plate, and the oil inlet pipe are connected to the base by matching the flange rings and the bolts.

[0012] Beneficial effects of the utility model:

[0013] 1. Compared with the conventional oil injectors, this device will generate relatively loud noise at the filter and diffuser when working. Being in this environment for a long time will cause the staff to have reduced hearing, headache and other physical discomforts. This device installs a sound insulation and noise reduction cover on the outside of the diffuser and filter to limit the sound waves to a limited cylindrical space for noise reduction. The remaining sound waves are secondary absorbed by the external corrugated cotton, so that the transmitted sound waves are within the normal acceptable range. The installation dimensions of this device are consistent with those of the conventional oil injectors, and the interchangeability is strong;

[0014] 2. The noise reduction cover frame is supported and installed by the circular boss. The noise reduction cover frame is designed according to the shape of the diffuser and the filter screen. It is made of rolled and welded steel plates. It can be inserted from the bottom of the diffuser and can be easily disassembled. The noise reduction cover frame limits the generated noise to a limited cylindrical space. The sound waves will gradually attenuate after refraction or reflection inside the cylinder, which is the first layer of noise absorption;

[0015] 3. Use stainless steel cable ties to fix the noise reduction wave cotton on the outside of the noise reduction cover frame. When the remaining sound waves are transmitted through the noise reduction cover frame, the noise reduction wave cotton is used for the second layer of absorption. The noise reduction wave cotton is generally made of oil-resistant nitrile or polyurethane. There are tiny pores inside the noise reduction wave cotton. The wave cotton itself is a kind of concave and convex wavy sponge. The tiny pores and wave structure can absorb a large amount of incident sound wave energy, which greatly reduces the transmitted sound waves and is within the normal acceptable range. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The first three-dimensional structure schematic diagram of the oil injector with noise reduction device of the utility model is shown;

[0017] Figure 2 The second three-dimensional structure schematic diagram of the oil injector with noise reduction device of the utility model is shown;

[0018] Figure 3 The schematic diagram of the cross-section of the three-dimensional structure of the oil injector with a noise reduction device of the utility model is shown;

[0019] Figure 4 The oil injector with noise reduction device of the utility model is shown Figure 3 The circle shows an enlarged schematic diagram of the three-dimensional structure;

[0020] Figure 5 Another cross-sectional perspective structural diagram of the oil injector with noise reduction device of the utility model is shown;

[0021] Figure 6 The third stereoscopic structure schematic diagram of the fuel injector with noise reduction device of the utility model is shown;

[0022] Explanation of the reference numerals: 1. Mounting plate; 2. Mounting assembly; 3. Noise reduction assembly; 4. Diffuser; 5. Conveying assembly; 6. Filter assembly; 7. Connecting assembly; 201. Circular boss; 202. Noise reduction cover frame; 301. Noise reduction corrugated cotton; 302. Stainless steel cable tie; 501. Oil inlet pipe; 502. Sleeve; 503. Nozzle; 601. Mounting circular plate; 602. Filter screen; 603. Base; 604. Mounting cavity; 701. Flange ring; 702. Bolt. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0024] See also Figure 1 The utility model provides an embodiment: an injector with a noise reduction device, comprising a mounting plate 1, a mounting assembly 2, a noise reduction assembly 3, a diffuser 4, a conveying assembly 5, a filtering assembly 6 and a connecting assembly 7, the diffuser 4 passes through the mounting plate 1, the mounting assembly 2 is arranged outside the diffuser 4, the noise reduction assembly 3 is arranged outside the mounting assembly 2, the conveying assembly 5 is arranged below the mounting plate 1, the filtering assembly 6 is arranged below the diffuser 4, and the connecting assembly 7 is provided with four groups, two groups of the connecting assembly 7 are arranged outside the diffuser 4, and the other two groups of the connecting assembly 7 are arranged outside the conveying assembly 5.

[0025] See also Figure 2-4 In this embodiment, the mounting assembly 2 includes an annular boss 201 and a noise reduction cover frame 202. The annular boss 201 is fixedly mounted on the outside of the diffuser 4, and the noise reduction cover frame 202 is fixedly mounted below the annular boss 201. The lowermost end of the noise reduction cover frame 202 is located in the middle of the filter assembly 6. The annular boss 201 is provided to support and mount the noise reduction cover frame 202, and the noise reduction assembly 3 is supported and mounted by providing the noise reduction cover frame 202, and the noise at the diffuser 4 and the filter assembly 6 is limited to a limited In the cylindrical space, the sound waves will gradually attenuate after refraction or reflection inside the cylinder; the noise reduction component 3 includes noise reduction corrugated cotton 301 and stainless steel tie 302, the noise reduction corrugated cotton 301 is arranged on the outside of the noise reduction cover frame 202, the stainless steel tie 302 is arranged on the outside of the noise reduction corrugated cotton 301, and multiple groups of stainless steel tie 302 are arranged, and the noise reduction corrugated cotton 301 is fixedly connected to the noise reduction cover frame 202 through the stainless steel tie 302; the noise reduction corrugated cotton 301 is arranged to perform secondary absorption on the remaining sound waves absorbed by the noise reduction cover frame 202.

[0026] See also Figure 5-6In this embodiment, the delivery component 5 includes an oil inlet pipe 501, a sleeve 502 and a nozzle 503. The oil inlet pipe 501 passes through the mounting plate 1, and the oil inlet pipe 501 is arranged below the mounting plate 1. One end of the oil inlet pipe 501 is fixedly connected to the sleeve 502, and the nozzle 503 is fixedly installed above the sleeve 502; the working oil is delivered to the inside of the device by arranging the oil inlet pipe 501, the nozzle 503 is connected to the oil inlet pipe 501 by arranging the sleeve 502, and the high-speed working oil is sprayed into the inside of the filter component 6 by arranging the nozzle 503; the filter component 6 includes a mounting circular plate 601 and a filter screen 602, the mounting circular plate 601 is fixedly installed below the diffuser 4, and the filter screen 602 is fixedly installed below the mounting circular plate 601; the filter screen 602 is supported and installed by arranging the mounting circular plate 601, and the lubricating oil is filtered by arranging the filter screen 602 to improve the quality of the lubricating oil; the filter component 6 also It includes a base 603 and an installation cavity 604. The base 603 is fixedly installed inside the filter 602. The base 603 is provided with an installation cavity 604. The base 603 is provided to shield the lubricating oil so that the lubricating oil can only enter the interior of the filter assembly 6 through the filter 602. The installation cavity 604 is provided to provide installation space for the sleeve 502 and the nozzle 503. The connecting assembly 7 includes a flange ring 701 and bolts 702. The flange ring 701 is provided with four groups. Two groups of flange rings 701 are fixedly installed on the outside of the diffuser 4, and the other two groups of flange rings 701 are fixedly installed on the outside of the oil inlet pipe 501. There are multiple groups of bolts 702, and the bolts 702 penetrate the flange rings 701. The diffuser 4 and the mounting plate 1, the diffuser 4 and the mounting circular plate 601, the oil inlet pipe 501 and the mounting plate 1, and the oil inlet pipe 501 are connected to the base 603 by matching the flange ring 701 and the bolts 702.

[0027] When working, place the device in the lubricating oil so that the tail end of the diffusion tube 4 is submerged below the oil surface.

[0028] The working oil is delivered to the nozzle 503 by using the oil inlet pipe 501;

[0029] The lubricating oil is filtered by the filter 602 so that the lubricating oil in the filter 602 is free of impurities, thereby improving the quality of the lubricating oil;

[0030] The working oil is ejected at high speed by the nozzle 503. The jet takes away the lubricating oil in the filter 602 and enters the throat of the diffuser 4 together with the working oil. The two oils of different speeds in the throat collide with each other to exchange energy. During this energy exchange and output process, relatively large noise is generated at the filter 602 and the diffuser 4 and is transmitted along the oil tank or pipeline.

[0031] The noise reduction cover frame 202 is used to confine the transmitted sound waves within a limited cylindrical space. The sound waves will gradually attenuate after refraction or reflection inside the cylinder. The remaining sound waves are secondary absorbed by the noise reduction corrugated cotton 301, so that the transmitted sound waves are reduced to a normal acceptable level.

[0032] By using the diffuser 4, the working oil speed decreases and the lubricating oil speed increases during the energy exchange process. When reaching the throat outlet, the speeds of the two oils tend to be consistent. The mixed oil flow passes through the diffuser 4 and converts kinetic energy into pressure energy, which is sent to the inlet of the turbine main oil pump or the bearing lubrication point.

[0033] Through the above steps, the noise reduction component 3 is supported and installed by setting the installation component 2, the noise reduction component 3 is used to reduce the noise inside the diffuser 4 and the filter component 6, the diffuser 4 is set to allow the working oil and the lubricating oil to exchange energy, the conveying component 5 is set to spray high-speed working oil into the diffuser 4, the lubricating oil is filtered by setting the filter component 6, and the conveying component 5 and the diffuser 4 are installed and connected by setting the connecting component 7.

[0034] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. An oil injector with a noise reduction device, comprising a mounting plate (1); characterized in that: The invention also comprises a mounting assembly (2), a noise reduction assembly (3), a diffuser (4), a conveying assembly (5), a filtering assembly (6) and a connecting assembly (7); the diffuser (4) passes through the mounting plate (1); the mounting assembly (2) is arranged outside the diffuser (4); the noise reduction assembly (3) is arranged outside the mounting assembly (2); the conveying assembly (5) is arranged below the mounting plate (1); the filtering assembly (6) is arranged below the diffuser (4); and four groups of connecting assemblies (7) are arranged, two groups of connecting assemblies (7) are arranged outside the diffuser (4), and the other two groups of connecting assemblies (7) are arranged outside the conveying assembly (5).

2. The oil injector with a noise reduction device according to claim 1, characterized in that: The mounting assembly (2) comprises a circular boss (201) and a noise reduction cover frame (202); the circular boss (201) is fixedly mounted on the outside of the diffuser (4); the noise reduction cover frame (202) is fixedly mounted below the circular boss (201); and the lowermost end of the noise reduction cover frame (202) is located in the middle of the filter assembly (6).

3. The oil injector with a noise reduction device according to claim 2, characterized in that: The noise reduction component (3) comprises noise reduction corrugated cotton (301) and a stainless steel tie (302); the noise reduction corrugated cotton (301) is arranged outside the noise reduction cover frame (202); the stainless steel tie (302) is arranged outside the noise reduction corrugated cotton (301); a plurality of sets of stainless steel tie (302) are arranged; the noise reduction corrugated cotton (301) is fixedly connected to the noise reduction cover frame (202) via the stainless steel tie (302).

4. The oil injector with a noise reduction device according to claim 3, characterized in that: The delivery assembly (5) comprises an oil inlet pipe (501), a sleeve (502) and a nozzle (503); the oil inlet pipe (501) passes through the mounting plate (1); the oil inlet pipe (501) is arranged below the mounting plate (1); one end of the oil inlet pipe (501) is fixedly connected to the sleeve (502); and the nozzle (503) is fixedly installed above the sleeve (502).

5. The oil injector with a noise reduction device according to claim 4, characterized in that: The filter assembly (6) comprises a mounting circular plate (601) and a filter screen (602). The mounting circular plate (601) is fixedly mounted below the diffusion tube (4), and the filter screen (602) is fixedly mounted below the mounting circular plate (601).

6. The oil injector with a noise reduction device according to claim 5, characterized in that: The filter assembly (6) further comprises a base (603) and an installation cavity (604); the base (603) is fixedly installed inside the filter screen (602); and the installation cavity (604) is provided inside the base (603).

7. The oil injector with a noise reduction device according to claim 6, characterized in that: The connection assembly (7) comprises a flange ring (701) and bolts (702). Four groups of flange rings (701) are provided, two groups of flange rings (701) are fixedly installed on the outside of the diffuser (4), and the other two groups of flange rings (701) are fixedly installed on the outside of the oil inlet pipe (501). Multiple groups of bolts (702) are provided, and the bolts (702) penetrate the flange rings (701).

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