CN211202082U

CN211202082U - Novel filtering respirator

Info

Publication number: CN211202082U
Application number: CN201922413747.0U
Authority: CN
Inventors: 刘山宝; 王兴光; 裴越
Original assignee: JIANGSU SIDA POWER MECHANICAL GROUP CO Ltd
Current assignee: JIANGSU SIDA POWER MECHANICAL GROUP CO Ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-08-07
Anticipated expiration: 2029-12-27

Abstract

The utility model particularly relates to a novel filtration formula respirator belongs to internal-combustion engine technical scheme field, and it includes filter screen assembly, air inlet, respirator casing, outlet duct, oil return pipe and relief valve, the filter screen assembly includes open gross porosity filter screen of first layer, second to fifth layer by thick closed filter screen to thin, be provided with air inlet and outlet duct on the respirator casing, open filter screen sets up and is being close to air inlet department, gross porosity filter screen, micropore filter screen, first utmost point micropore filter screen and second utmost point micropore filter screen set gradually at the back of open filter screen, the lower extreme of respirator casing is provided with four relief valves, the lower extreme of respirator casing is provided with the oil return pipe. The utility model discloses can improve oil-gas separation efficiency, reduce the pollution simultaneously, conveniently wash simultaneously and nurse.

Description

Novel filtering respirator

Technical Field

The utility model relates to an engine spare part design, concretely relates to novel engine respirator technical scheme belongs to internal-combustion engine technical scheme field.

Background

The exhaust gases in the crankcase of the internal combustion engine cannot be eliminated and can only be discharged to the atmosphere after being treated. For oil drops, oil mist, soot, water vapor and other harmful impurities rich in exhaust gas, various engine manufacturers use a respirator or a part called an oil-gas separator for physical treatment without exception and then discharge the oil drops, the oil mist, the soot, the water vapor and other harmful impurities to the atmosphere.

As the demands of users on engines are higher, national regulations become stricter, and higher demands are made on the effects of respirators. Basically adopts a combination mode, including rotary centrifugation, collision, open type coarse pore filtration, labyrinth, expansion and pressure stabilization, and the like, but not always sufficient. Either way, the effect is only 90% of the oil mist and other impurities removed, but there is no way to remove water vapor and finer oil mist and particles. Precisely, the oil mist, particles, water vapor mixture and blue and white smoke discharged from the air outlet pipe are one of the most serious problems for users.

Disclosure of Invention

In order to overcome the deficiencies of the prior art, the utility model provides a novel filtration formula respirator technical scheme promotes the separation effect of all impurities in the waste gas comprehensively, eliminates blue white cigarette even basically.

According to the technical scheme of the utility model, the novel filtering respirator comprises a filter screen assembly, an air inlet, a respirator shell, an air outlet pipe, an oil return pipe and safety valves, wherein the filter screen assembly comprises a filter screen fixing frame, a transverse fixing frame, an open type filter screen, a coarse pore filter screen, a micropore filter screen, a first micro pore filter screen and a second micro pore filter screen, the respirator shell is provided with the air inlet and the air outlet pipe, the open type filter screen is arranged at a position close to the air inlet, the coarse pore filter screen, the micropore filter screen, the first micro pore filter screen and the second micro pore filter screen are sequentially arranged at the back of the open type filter screen and are fixed on the respirator shell through the filter screen fixing frame, the open type filter screen is fixed on the respirator shell through the transverse fixing frame, the bottom end of the respirator shell is provided with an air hole and four safety valves, and the four safety valves are respectively, an air groove is formed below the air hole and communicated with the air outlet pipe, an oil hole is formed in the bottom end of the respirator shell, an oil groove is connected below the oil hole, and the oil return pipe is connected with the oil groove.

As a further improvement of the utility model, the filter screen mount divide into left frame and right frame, left side frame and right frame set up for the symmetry, left side frame and right frame are fixed with closed coarse mesh filter screen, closed micropore filter screen, the utmost point micropore filter screen of first closed and the utmost point micropore filter screen of the closed of second with pressing from both sides tight fixed mode.

As a further improvement of the utility model, the left frame and the right frame are rectangular, and the middle symmetry is provided with the filter screen window.

As a further improvement, the filter screen fixing frame is welded with the inside of the respirator shell to form a closed cavity.

As a further improvement, the transverse fixing frame is divided into a left frame and a right frame, the left frame and the right frame are symmetrically arranged, and the left frame and the right frame are fixed with the open type non-woven fabric in a clamping and fixing manner.

As a further improvement, the transverse fixing frame is fixed with the respirator shell by welding through two frames left and right, and an airflow channel is reserved between the upper frame and the lower frame of the transverse fixing frame and the respirator shell.

As a further improvement, the safety valve comprises a buckle and a safety valve block, the buckle is fixed on the inner partition plate of the shell, and the safety valve block and the bottom of the shell of the respirator form a closed space.

As a further improvement of the utility model, the open type filter screen is made of non-woven fabric.

As a further improvement of the utility model, the closed type coarse hole filter screen and the closed type micropore filter screen are made of nylon materials.

As a further improvement, the first closed type electrode microporous filter net and the second closed type electrode microporous filter net are made of glass fiber materials.

Compared with the prior art, the utility model, have following advantage:

1. the efficiency of separating oil mist, water mist and other impurities is greatly improved, and the effect is obviously improved compared with the prior respirator.

2. Through filtering layer by layer thick to thin, try hard to avoid the filter screen to block up, four relief valves have further reduced the risk that the filter screen blockked up again simultaneously, convenient washing and nursing simultaneously.

Drawings

Fig. 1 is a cross-sectional view of the overall structure of the present invention.

Fig. 2 is a sectional view of the present invention in the direction of a.

Fig. 3 is a schematic view of a screen holder.

Fig. 4 is a sectional view of the screen holder taken along the direction B-B.

Fig. 5 is a schematic view of a lateral fixing frame.

Fig. 6 is a cross-sectional view of the transverse fixing frame C-C.

Fig. 7 is a sectional view of the relief valve.

Description of reference numerals: 1. a respirator housing; 2. an open screen; 3. a coarse mesh filter screen; 4. a microporous filter screen; 5. a first very fine mesh screen; 6. a second pole microporous filter screen; 7. a filter screen fixing frame; 8. an air inlet; 9. an oil return pipe; 10. a safety valve; 11. an air outlet pipe; 12. a transverse fixing frame; 13. air holes; 14. an air tank; 15. an oil hole; 16. an oil sump; 7.1, a left frame; 7.2, a right frame; 7.12, a filter screen window; 10.1, buckling; 10.2, a safety valve plate; 12.1, a left cross frame; 12.2 and a right cross frame.

Detailed Description

The invention is further described with reference to the following specific drawings and examples.

As shown in fig. 1 to 7, a novel filtering respirator comprises a filter screen assembly, an air inlet 8, a respirator housing 1, an air outlet pipe 11, an oil return pipe 9 and safety valves 10, wherein the filter screen assembly comprises a first layer of open non-woven fabric, a closed coarse-pore filter screen 3, a closed microporous filter screen 4, a first closed type ultra-microporous filter screen 4 and a second closed type ultra-microporous filter screen 4, the respirator housing 1 is provided with the air inlet 8 and the air outlet pipe 11, the open filter screen 2 is arranged at a position close to the air inlet 8, the coarse-pore filter screen 3, the microporous filter screen 4, the first ultra-microporous filter screen 5 and the second ultra-microporous filter screen 6 are sequentially arranged behind the open filter screen 2 and fixed on the respirator housing 1 through a filter screen fixing frame 7, the open filter screen 2 is fixed on the respirator housing 1 through a transverse fixing frame 12, the bottom end of the respirator housing 1 is provided with air holes 13, the four safety valves are respectively communicated with a cavity formed by each layer of filter screen and the respirator shell 1, an air groove 14 is arranged below the air hole 13, the air groove 14 is communicated with the air outlet pipe 11, an oil hole 15 is arranged at the bottom end of the respirator shell 1, an oil groove 16 is connected below the oil hole, and the oil return pipe 9 is connected with the oil groove 16.

Further, filter screen mount 7 divide into left frame 7.1 and right frame 7.2, left side frame 7.1 and right frame 7.2 set up for the symmetry, left side frame 7.1 and right frame 7.2 are fixed with coarse mesh filter screen 3, micropore filter screen 4, first utmost point micropore filter screen 5 and second utmost point micropore filter screen 6 with the mode of pressing from both sides tight fixed.

Furthermore, the left frame 7.1 and the right frame 7.2 are rectangular, and filter screen windows 7.12 are symmetrically arranged in the middle.

As a further improvement of the utility model, the filter screen fixing frame 7 is welded with the inside of the respirator shell 1 all around to form a closed cavity.

Further, horizontal mount 12 divide into left crossbearer 12.1 and right crossbearer 12.2, left side crossbearer 12.1 and right crossbearer 12.2 are the symmetry setting, left side crossbearer 12.1 and right crossbearer 12.2 are fixed with open filter screen 2 with the mode of pressing from both sides tight fixed.

Furthermore, the left and right frames of the transverse fixing frame 12 are welded and fixed with the respirator shell 1, and an airflow channel is reserved between the upper and lower frames of the transverse fixing frame 12 and the respirator shell 1.

Further, the safety valve 10 comprises a buckle 10.1 and a safety valve plate 10.2, the buckle 10.1 is fixed on a partition plate inside the respirator shell 1, and the safety valve plate 10.2 and the bottom of the respirator shell 1 form a closed space.

Further, the open type filter screen 2 is made of non-woven fabric materials.

Furthermore, the closed coarse pore filter screen 3 and the closed micropore filter screen 4 are made of nylon materials.

Furthermore, the first closed type ultra-microporous filter screen 4 and the second closed type ultra-microporous filter screen 4 are made of glass fiber materials.

As shown in fig. 2 to 4, five layers of filter screens and the installation and fixation modes thereof are as follows:

more than 90% of waste gas participates in the filtration of the first layer of open type filter screen 2, and the diameter of the filter hole phi 1=0.15 mm.

And a second layer of coarse-pore filter screen 3 is used for filtering all the waste gas, and the diameter phi 2 of the filter pores is =0.15 mm.

More than 90% of waste gas participates in the filtering of the third layer of microporous filter screen 4, and the diameter phi 3 of the filter holes is =0.048 mm.

And a fourth layer of a first micro-pore filter screen 5 filters all the waste gas, and the diameter of the filter pores phi 4=0.01 mm. At the moment, the oil mist filtering efficiency is more than or equal to 90 percent.

And a fifth layer of a second-pole microporous filter screen 6 is used for filtering all the waste gas, and the diameter phi 4 of the filter holes is =0.005 mm. This filter screen filters the blue and white smoke (oil mist + water vapor).

Each layer of filter screen is automatically bent, folded, shaped, pressed and fixed by a fixing frame.

As shown in the safety valve 10 of fig. 7, when the resistance of the filter screen is larger than or equal to 3.3kPa, the waste gas passes through the air hole 13 to open the safety valve plate 10.2, when the resistance is increased to 5kPa, the safety valve plate 10.2 is completely opened, at the moment, 20 percent of the waste gas is directly discharged without participating in filtration, and at the moment, the respirator is detached and cleaned by gasoline and can be reused.

The working process as follows, when the engine operates, be rich in the oil mist, vapor, soot, multiple harmful substance such as tar, and the waste gas that has certain pressure gets into the respirator, wash out first layer open filter screen 2, most waste gas pierces through open filter screen 2, the small part bypasses open filter screen 2, waste gas merges and continues to move ahead, pass second floor coarse pore filter screen 3 and third layer micropore filter screen 4 in succession, the impurity particle in the waste gas this moment is small to the micron level, waste gas resumes to move ahead again, pass first utmost point micropore filter screen 5 and second utmost point micropore filter screen 6 in succession again, the oil mist in the waste gas this moment, impurity, water smoke has been filtered basically, clean waste gas gets rid of the respirator at last. When the resistance of the respirator filter screen reaches a certain value, the safety valve 10 is opened, and part of the waste gas is directly discharged without participating in filtering.

Claims

1. The novel filtering respirator is characterized by comprising a filter screen assembly, an air inlet (8), a respirator shell (1), an air outlet pipe (11), an oil return pipe (9) and a safety valve (10), wherein the filter screen assembly comprises a filter screen fixing frame (7), a transverse fixing frame (12), an open type filter screen (2), a coarse pore filter screen (3), a micropore filter screen (4), a first extremely-micropore filter screen (5) and a second extremely-micropore filter screen (6), the respirator shell (1) is provided with the air inlet (8) and the air outlet pipe (11), the open type filter screen (2) is arranged at a position close to the air inlet (8), the coarse pore filter screen (3), the micropore filter screen (4), the first extremely-micropore filter screen (5) and the second extremely-micropore filter screen (6) are sequentially arranged at the back of the open type filter screen (2) and are fixed on the respirator shell (1) through the filter screen fixing frame (7), open filter screen (2) are fixed on respirator casing (1) through horizontal mount (12), the bottom of respirator casing (1) is provided with gas pocket (13) and four relief valve (10), four relief valve (10) communicate with each other with the cavity that is formed by each layer filter screen and respirator casing (1) respectively, gas pocket (13) below is provided with air pocket (14), air pocket (14) communicate with each other with outlet duct (11), the bottom of respirator casing (1) is provided with oilhole (15), and the oilhole below is connected with oil groove (16), it is connected with oil groove (16) to return oil pipe (9).

2. The novel filtering respirator of claim 1, characterized in that the screen holder (7) is divided into a left frame (7.1) and a right frame (7.2), the left frame (7.1) and the right frame (7.2) are symmetrically arranged, and the left frame (7.1) and the right frame (7.2) hold the coarse screen (3), the fine screen (4), the first very fine screen (5) and the second very fine screen (6) layer by layer in a clamping and fixing manner.

3. A novel filtering respirator according to claim 2 wherein the left (7.1) and right (7.2) frames are rectangular and have the screen window (7.12) symmetrically disposed in the middle.

4. A novel filtering respirator according to claim 2 wherein the screen holder (7) is welded around its periphery to the interior of the respirator shell (1) to form a closed chamber.

5. A novel filtering respirator according to claim 1, characterized in that the transverse frame (12) is divided into a left (12.1) and a right (12.2) transverse frame, the left (12.1) and right (12.2) transverse frames being arranged symmetrically, the left (12.1) and right (12.2) transverse frames fixing the open filter (2) in a clamping manner.

6. The novel filtering respirator of claim 5, wherein the left and right frames of the transverse fixing frame (12) are welded to the respirator shell (1), and an airflow channel is reserved between the upper and lower frames of the transverse fixing frame (12) and the respirator shell (1).

7. The novel filtering respirator of claim 1, wherein the safety valve (10) comprises a buckle (10.1) and a safety valve sheet (10.2), the buckle (10.1) is fixed on an internal partition of the respirator shell (1), and the safety valve sheet (10.2) forms a closed space with the bottom of the respirator shell (1).

8. A novel filtering respirator according to claim 1 wherein the open screen (2) is a nonwoven material.

9. A novel filtering respirator according to claim 1 wherein the coarse (3) and fine (4) screens are of nylon material.

10. A novel filtering respirator according to claim 1 wherein both the first (5) and second (6) polar microporous screens are of fibreglass material.