CN209510419U - A kind of ventilation device based on the application of natural gas engine crankcase - Google Patents

Abstract

The utility model discloses a kind of ventilation devices based on the application of natural gas engine crankcase, including the Venturi tube being connected in the air inlet pipeline of engine, the Venturi tube includes the diffuser being sequentially connected, mixing section and contraction section, the mixing section is equipped with drainage tube, it is equipped with and the matched spool of drainage tube in the drainage tube, connecting tube is additionally provided in the drainage tube, described connecting tube one end is enclosed construction, the other end is connected to through spool with mixing section, spool can move in connecting tube along the axial direction of drainage tube, several first through hole are additionally provided on the outer wall of the connecting tube, elastic component is additionally provided in the connecting tube, elastic component covers in connecting tube, elastic component is between mixing section and spool, when elastic component is in non-compressed state, first through hole in connecting tube is located in elastic component；It further include the filter assemblies being connected to crankcase, described filter assemblies one end is connected to crankcase, and the other end is connected to drainage tube.

Description

A kind of ventilation device based on the application of natural gas engine crankcase

Technical field

The utility model relates to engine crankcase technical fields, and in particular to one kind is based on natural gas engine crankcase The ventilation device of application.

Background technique

Engine be it is a kind of can be the machine that can be converted into mechanical energy of other forms, including such as internal combustion engine (gasoline hair Motivation etc.), external-combustion engine (Stirling engine, steam engine etc.), motor etc..If internal combustion engine is usually that chemical energy is converted into machine Tool energy.And in the crankcase in engine, upper crankcase and cylinder block cast solid, lower crankcase are used to lubrication oil, and Closing upper crankcase, therefore also known as oil sump figure.Oil sump stress very little, is generally stamped to form using sheet metal, shape takes Certainly in the capacity of the general layout of engine and machine oil.Oil sump is provided with steady oil baffle, pasta wave when preventing automobile porpoising It moves excessive.Oil sump bottom is also equipped with purge cock, and permanent magnet is housed on usual purge cock, with the gold in adsorpting lubrication oil Belong to bits, reduces the abrasion of engine.Equipped with liner between upper lower crankcase joint surface, oil leak is prevented.

When the engine is working, some total combustion mixture and exhaust gas channel in crankcase through piston ring, while with The raising of oil temperature, can also generate some machine oil steam.These mixed gas can make the performance depreciation of machine oil, part by Corrosion；Pressure in crankcase can also increased, machine oil is lost from crankshaft oil seal, crankcase liner etc. exudation.It passes at present The processing method of system is the method for using installation crankcase breather, these mixed gas are directly discharged in atmosphere, but It is easy to cause the pollution of environment in this way.

Utility model content

Technical problem to be solved in the utility model is to overcome deficiency in the prior art, and it is an object of the present invention to provide a kind of base In the ventilation device of natural gas engine crankcase application, the mixed gas generated in crankcase is avoided to be directly discharged to the external world, External environment is polluted.

The utility model is achieved through the following technical solutions:

A kind of ventilation device based on the application of natural gas engine crankcase, including being connected in the air inlet pipeline of engine Venturi tube, the Venturi tube includes the diffuser, mixing section and contraction section being sequentially connected, and is set on the mixing section Have a drainage tube, be equipped in the drainage tube with the matched spool of drainage tube, be additionally provided with connecting tube, the connection in the drainage tube Pipe one end is enclosed construction, and the other end is connected to through spool with mixing section, and spool can be in connecting tube along the axis of drainage tube It is mobile to direction, several first through hole are additionally provided on the outer wall of the connecting tube, elastic component is additionally provided in the connecting tube, elasticity Part covers in connecting tube, and elastic component is between mixing section and spool, when elastic component is in non-compressed state, in connecting tube One through-hole is located in elastic component；It further include the filter assemblies being connected to crankcase, described filter assemblies one end and crankcase connect Logical, the other end is connected to drainage tube；It further include the connecting cylinder being arranged in contraction section, the connecting cylinder is interior equipped with fixed link and solid Determine block, one end of the fixed link is connect with fixed block, and the inner wall connection of the other end and connecting cylinder, the other end and fixed block connect It connects, the fixed block is equipped with rotary components, and the air-flow entered in contraction section is able to drive rotary components rotation；The mixing Several support plates are additionally provided in section, support plate is axially distributed along mixing section.

The utility model is arranged a drainage tube on the mixing section of the Venturi tube of generator air inlet pipe, and the one of drainage tube End is connected to component, so that the mist of oil steam being discharged out of crankcase is filtered by filter assemblies, will be blended in steaming Oil filtration in vapour comes out, and the steam after filtering machine oil enters in drainage tube, and the gas pressure of steam is forced in spool Spool compression elastic piece, so that spool is mobile towards the mixing section direction of Venturi tube in drainage tube, when spool is moved to company When at the first through hole on adapter tube, the steam being discharged in crankcase enters to connecting tube by first through hole, and steam eventually enters into It to Venturi tube, is mixed with the mixed gas in Venturi tube, and is burnt in final combustion chamber, by crankcase The case where steam burning of discharge is disposed, is discharged outside to pollution environment so as to avoid the steam that crankcase generates generation； The mixed gas that the spool and elastic component being arranged in the utility model can be avoided in Venturi tube enters in crankcase, guarantees Crankcase is in negative pressure state.

Meanwhile the utility model is provided with connecting cylinder, the outer wall and Venturi tube of connecting cylinder in the diffuser of Venturi tube Diffuser inner wall be connected through a screw thread, convenient for connecting cylinder is quick installed in the diffuser of Venturi tube, and be arranged company Rotary components are installed, so that the mixed gas entered in diffuser is able to drive rotary components rotation, rotation group in connect cylinder Part can mix the mixed gas in diffuser during rotation, further increase the mixing force to mixed gas Degree；Since the mixing section diameter of Venturi tube is smaller relative to the diameter of diffuser and contraction section, cause its intensity lower, therefore During use, it is easily broken off at Venturi tube mixing section, therefore, the support plate being arranged in the mixing section of Venturi tube The intensity that can be improved mixing section, the case where avoiding mixing section from being broken, since the diameter of mixing pan is less than in mixing section Diameter further improves the mixed of mixed gas so that mixed gas when by support plate, can be mixed by compression again Resultant force degree.

Further, the filter assemblies include filter box and case lid, and the drainage tube is inserted into Rose Box, described Drainage tube, which is located on the intracorporal outer wall of Rose Box, is additionally provided with several second through-holes, and the case lid is connected by screw thread and filter box It connects, case lid is equipped with exhaust pipe, and exhaust pipe one end is connected to filter box, and the other end is connected to crankcase.

The filter assemblies of setting for being filtered to the mist of oil steam generated out of crankcase, by machine oil from steam mistake It filtering out and, steam after being filtered is entered in drainage tube by the second through-hole being arranged on drainage tube, and by case lid and mistake Filter box body is arranged to be threadedly coupled, and facilitates and removes case lid from filter box, periodically to filtering in the intracorporal machine oil of Rose Box It is cleared up.

Further, be equipped with the filter block of rectangular configuration in the filter box, filter block be located at case lid and drainage tube it Between, the inside of filter block is cavity structure, and the top of filter block is equipped with opening, and opening is connected to cavity, the exhaust pipe In the cavity that opening stretches to filter block.

The filter block of setting is the rectangular block that inside is cavity structure, and the face in filter block towards case lid direction is equipped with and opens Mouthful, opening is connected to the inside of filter block, and the exhaust pipe of setting stretched to after being connect by screw thread with case lid from opening In the cavity of filter block, so that the steam in exhaust pipe is able to enter to the cavity of filter block；Simultaneously as filter box and case Be connected through a screw thread between lid so that case lid by screw thread connect with filter box when, lower surface and drainage tube in case lid Upper surface under the action of, filter block can be fixed between case lid and drainage tube, when case lid is removed out of filter box, Filter block can be removed out of filter box, machine oil of the filtering in filter block is cleaned.

Further, several stomatas, the cavity of filter block are equipped on the opposite side wall of the two of them of the filter block Inside it is additionally provided with several filter screens, filter screen is towards stomata directional spreding.

For being filtered to the machine oil in mist of oil steam, steam was passing through the filter screen being arranged in the cavity of filter block When strainer, the machine oil being blended in steam will be attached on filter screen, achieve the purpose that be provided with mist of oil steam filtration simultaneously The filter screen of multilayer can effectively improve the filtering dynamics to steam, and successively the machine oil after filter screen improves filter block two sides On stomata enter in filter box, complete filtering to mist of oil steam, the steam after final filtration improves on drainage tube The second through-hole enter in drainage tube.

Further, the inner wall two sides of the filter block are equipped with quantity guide groove identical with filter screen quantity, described The two sides of filter screen, which are equipped with, to be inserted into guide groove with the matched guide pad of guide groove, guide pad, filter screen is fixed In filter block.

Quickly filter screen can be fixed in filter block using the guide groove and guide pad of setting, when installation, will be filtered The guide pad of net two sides is inserted into guide groove, and just quickly filter screen can be fixed in filter block, avoid filter screen along mistake The axis direction of filter block is mobile, while using this structure convenient for quickly extracting filter screen out of filter block out, to being attached to Machine oil in filter block and filter block is cleared up.

Further, it is additionally provided with limited block in the connecting tube, the limited block is close to the end of connecting tube.

Setting limited block guarantees that the elastic force of elastic component generation can oppress spool and be limited in company for limiting to spool On adapter tube, spool is moved to the outer end of connecting tube by the elastic force for avoiding elastic component from generating.

Further, the first through hole is along the outer wall that connecting tube is axially distributed in connecting tube.

The first through hole of setting is same as by first through hole entering to the steam entered in drainage tube in connecting tube, steams Vapour enters to the mixing section of Venturi tube from connecting tube again, is mixed with the gas in Venturi tube, and due to first through hole Along the axial directional distribution of connecting tube, when the steam flow in drainage tube gradually increases, so that spool is towards hybrid directional Mobile displacement is bigger, increases with the first through hole quantity of vapor communication in drainage tube, increases the row to steam in drainage tube Rate out guarantees that quickly the steam in drainage tube is discharged.

Further, the rotary components include and the matched bearing of fixed block, rotating block and several blades, the axis It holds and is connect with fixed block, the rotating block is connect with bearing, and the blade is evenly provided on the outer wall of rotating block.

When mixed gas enters in the contraction section of Venturi tube, gaseous mixture can force blade to drive rotating block in axis Rotation is held, blade mixes mixed gas during rotation, to reach the mesh for improving and mixing to gaseous mixture 's.

Further, the outer diameter of the support plate and the internal diameter of mixing section are identical, and the branch of cross structure is equipped in support plate Support, support frame as described above are equipped with several apertures.

The intensity of support plate not only can be improved in the cross supporting frame of setting, and support plate is avoided to deform, to reach To the purpose of Venturi tube inner support, the intensity of Venturi tube is improved, meanwhile, the support frame of setting makes gaseous mixture by branch It can collide with it when support, further increase the mixing dynamics to mixed gas；And the gaseous mixture of a part squeezes and leads to It when small holes, is mixed again, so that the gaseous mixture of the part can be mixed effectively.

The utility model compared with prior art, has the following advantages and benefits:

1, a kind of ventilation device based on the application of natural gas engine crankcase of the utility model, utilizes the drainage tube of setting It is directly connected to the Venturi tube in engine air inlet tube, so that the mist of oil steam being discharged out of crankcase is able to enter venturi In pipe, it is fed through combustion chamber high temperature burning with the gas mixing in Venturi tube, thus by generating at mist of oil steam in crankcase Reason is fallen, and avoids and is expelled directly out pollution on the environment；

2, a kind of ventilation device based on the application of natural gas engine crankcase of the utility model, the filter assemblies energy of setting It is enough to be effectively filtered the mist of oil steam being discharged in crankcase, the oil filtration in steam is come out, machine oil is avoided Waste；

3, a kind of ventilation device based on the application of natural gas engine crankcase of the utility model, when mixed gas improves text When the contraction section of venturi, gaseous mixture can force the blade of rotary components to rotate, and be stirred to mixed gas, to improve The mixing dynamics of mixed gas；

4, a kind of ventilation device based on the application of natural gas engine crankcase of the utility model, is arranged in Venturi tube Support plate can be improved the intensity of mixing section, avoid mixing section from being broken, while the support frame being arranged in support plate can Further increase the mixing dynamics to mixed gas.

Detailed description of the invention

Attached drawing described herein is used to provide to further understand the utility model embodiment, constitutes the one of the application Part does not constitute the restriction to the utility model embodiment.In the accompanying drawings:

FIG. 1 is a schematic structural view of the utility model；

Fig. 2 is the amplified structural schematic diagram in the portion the utility model A；

Fig. 3 is the structural schematic diagram of the utility model filter assemblies；

Fig. 4 is the top view of the utility model filter block；

Fig. 5 is the structural schematic diagram of the utility model filter screen；

Fig. 6 is the structural schematic diagram of the utility model connecting tube；

Fig. 7 is the structural schematic diagram of the utility model support plate；

Fig. 8 is the schematic cross-section of the utility model contraction section.

Label and corresponding parts title in attached drawing:

1- diffuser, 2- mixing section, 3- contraction section, 4- filter box, 5- drainage tube, 6- filter screen, the second through-hole of 7-, 8- Filter block, 9- stomata, 10- case lid, 11- exhaust pipe, 12- elastic component, 13- spool, 14- limited block, 15- connecting tube, 16- guiding Block, 17- first through hole, 18- support plate, 19- rotary components, 20- fixed block, 21- fixed link, 22- connecting cylinder, 23- support frame, 24- aperture, 26- blade, 27- bearing, 28 rotating blocks.

Specific embodiment

For the purpose of this utility model, technical solution and advantage is more clearly understood, below with reference to embodiment and attached drawing, The utility model is described in further detail, and the exemplary embodiment and its explanation of the utility model are only used for explaining this Utility model is not intended to limit the scope of the present invention.

Embodiment 1

As shown in Figure 1 to Figure 3, a kind of ventilation device based on the application of natural gas engine crankcase of the utility model, packet The Venturi tube being connected in the air inlet pipeline of engine is included, the Venturi tube includes the diffuser 1 being sequentially connected, mixing Section 2 and contraction section 3, the mixing section 2 are equipped with drainage tube 5, are equipped with and the matched spool of drainage tube 5 in the drainage tube 5 13, be additionally provided with connecting tube 15 in the drainage tube 5, described 15 one end of connecting tube is enclosed construction, the other end through spool 13 with Mixing section 2 is connected to, and spool 13 can move in connecting tube 15 along the axial direction of drainage tube 5, outside the connecting tube 15 Be additionally provided with several first through hole 17 on wall, elastic component 12 be additionally provided in the connecting tube 15,12 sets of elastic component in connecting tube 15, First through hole of the elastic component 12 between mixing section 2 and spool 13, when elastic component 12 is in non-compressed state, in connecting tube 15 17 are located in elastic component 12；It further include the filter assemblies being connected to crankcase, described filter assemblies one end is connected to crankcase, The other end is connected to drainage tube 5；Further include the connecting cylinder 22 being arranged in contraction section 3, is equipped with fixed link in the connecting cylinder 22 21 and fixed block 20, one end of the fixed link 21 connect with fixed block 20, the other end is connect with the inner wall of connecting cylinder 22, another End is connect with fixed block 20, and the fixed block 20 is equipped with rotary components 19, and the air-flow entered in contraction section 3 is able to drive rotation Turn the rotation of component 19；Several support plates 18 are additionally provided in the mixing section 2, support plate 18 is along the axial distribution of mixing section 2.

Embodiment 2

As shown in Figures 1 to 5, on the basis of embodiment 1, the filter assemblies include filter box 4 and case lid 10, institute It states drainage tube 5 to be inserted into Rose Box 4, several second through-holes is additionally provided on the outer wall that the drainage tube 5 is located in filter box 4 7, the case lid 10 is connect by screw thread with filter box 4, and case lid 10 is equipped with exhaust pipe 11,11 one end of exhaust pipe and Rose Box Body 4 is connected to, and the other end is connected to crankcase.The filter block 8 of rectangular configuration is equipped in the filter box 4, filter block 8 is located at case Between lid 10 and drainage tube 5, the inside of filter block 8 is cavity structure, and the top of filter block 4 is equipped with opening, is open and empty Chamber connection, the exhaust pipe 11 pass through opening and stretch in the cavity of filter block 8.The two of them of the filter block 8 are opposite It is equipped with several stomatas 9 on side wall, several filter screens 6 are additionally provided in the cavity of filter block 8, filter screen 6 divides towards 9 direction of stomata Cloth.The inner wall two sides of the filter block 8 are equipped with quantity guide groove identical with 6 quantity of filter screen, the two sides of the filter screen 6 It is equipped with and is inserted into the matched guide pad 16 of guide groove, guide pad 16 to guide groove, filter screen 6 is fixed on filter block In 8.

Embodiment 3

On the basis of embodiment 1, it is additionally provided with limited block 14 in the connecting tube 15, the limited block 14 is close to connection The end of pipe 15.

Embodiment 4

As shown in fig. 6, on the basis of embodiment 1, the first through hole 17 is axially distributed in connecting tube along connecting tube 15 On 15 outer wall.

Embodiment 5

As shown in figure 8, on the basis of embodiment 1, the rotary components 19 include with the matched bearing 27 of fixed block 20, Rotating block 28 and several blades 26, the bearing 27 are connect with fixed block 20, and the rotating block 28 is connect with bearing 27, described Blade 26 is evenly provided on the outer wall of rotating block 28.

Embodiment 6

As shown in fig. 7, on the basis of embodiment 1, the outer diameter of the support plate 18 is identical as the internal diameter of mixing section, support The support frame 23 of cross structure is equipped in disk 18, support frame as described above 23 is equipped with several apertures 24.

Above-described specific embodiment, to the purpose of this utility model, technical scheme and beneficial effects carried out into One step is described in detail, it should be understood that being not used to limit the foregoing is merely specific embodiment of the present utility model Determine the protection scope of the utility model, within the spirit and principle of the utility model, any modification for being made equally is replaced It changes, improve, should be included within the scope of protection of this utility model.

Claims (9)

1. a kind of ventilation device based on the application of natural gas engine crankcase, including being connected in the air inlet pipeline of engine Venturi tube, the Venturi tube include the diffuser (1), mixing section (2) and contraction section (3) being sequentially connected, feature It is, the mixing section (2) is equipped with drainage tube (5), is equipped with and drainage tube (5) matched spool in the drainage tube (5) (13), it is additionally provided with connecting tube (15) in the drainage tube (5), described connecting tube (15) one end is enclosed construction, and the other end runs through Spool (13) is connected to mixing section (2), and spool (13) can move on connecting tube (15) along the axial direction of drainage tube (5) It is dynamic, it is additionally provided with several first through hole (17) on the outer wall of the connecting tube (15), is additionally provided with elastic component on the connecting tube (15) (12), elastic component (12) covers on connecting tube (15), and elastic component (12) is located between mixing section (2) and spool (13), elastic component (12) when being in non-compressed state, the first through hole (17) in connecting tube (15) is located in elastic component (12)；

Including the filter assemblies being connected to crankcase, described filter assemblies one end is connected to crankcase, the other end and drainage tube (5) it is connected to；

Further include the connecting cylinder (22) being arranged in contraction section (3), is equipped in the connecting cylinder (22) fixed link (21) and fixed One end of block (20), the fixed link (21) is connect with fixed block (20), and the other end is connect with the inner wall of connecting cylinder (22), another End is connect with fixed block (20), and the fixed block (20) is equipped with rotary components (19), enters to the air-flow energy in contraction section (3) Enough drive rotary components (19) rotation；It is additionally provided with several support plates (18) in the mixing section (2), support plate (18) is along mixing section (2) axial distribution.

2. a kind of ventilation device based on the application of natural gas engine crankcase according to claim 1, which is characterized in that The filter assemblies include filter box (4) and case lid (10), and the drainage tube (5) is inserted into Rose Box (4), the drainage Several second through-holes (7) are additionally provided on the outer wall that pipe (5) is located in filter box (4), the case lid (10) passes through screw thread and mistake Filter box body (4) connection, case lid (10) are equipped with exhaust pipe (11), and exhaust pipe (11) one end is connected to filter box (4), the other end It is connected to crankcase.

3. a kind of ventilation device based on the application of natural gas engine crankcase according to claim 2, which is characterized in that Be equipped with the filter block (8) of rectangular configuration in the filter box (4), filter block (8) be located at case lid (10) and drainage tube (5) it Between, the inside of filter block (8) is cavity structure, and the top of filter block (4) is equipped with opening, and opening is connected to cavity, described Exhaust pipe (11) passes through opening and stretches in the cavity of filter block (8).

4. a kind of ventilation device based on the application of natural gas engine crankcase according to claim 3, which is characterized in that It is equipped with several stomatas (9) on the opposite side wall of the two of them of the filter block (8), is additionally provided in the cavity of filter block (8) Several filter screens (6), filter screen (6) is towards stomata (9) directional spreding.

5. a kind of ventilation device based on the application of natural gas engine crankcase according to claim 4, which is characterized in that The inner wall two sides of the filter block (8) are equipped with quantity guide groove identical with filter screen (6) quantity, the filter screen (6) Two sides, which are equipped with, to be inserted into the matched guide pad of guide groove (16), guide pad (16) to guide groove, and filter screen (6) are solid It is scheduled in filter block (8).

6. a kind of ventilation device based on the application of natural gas engine crankcase according to claim 1, which is characterized in that It is additionally provided with limited block (14) on the connecting tube (15), end of the limited block (14) close to connecting tube (15).

7. a kind of ventilation device based on the application of natural gas engine crankcase according to claim 1, which is characterized in that The first through hole (17) is axially distributed on the outer wall of connecting tube (15) along connecting tube (15).

8. a kind of ventilation device based on the application of natural gas engine crankcase according to claim 1, which is characterized in that The rotary components (19) include and fixed block (20) matched bearing (17), rotating block (28) and several blades (26), institute It states bearing (17) to connect with fixed block (20), the rotating block (28) connect with bearing (17), and the blade (26) equably sets It sets on the outer wall of rotating block (28).

9. a kind of ventilation device based on the application of natural gas engine crankcase according to claim 1, which is characterized in that The outer diameter of the support plate (18) is identical as the internal diameter of mixing section, and the support frame (23) of cross structure is equipped in support plate (18), Support frame as described above (23) is equipped with several apertures (24).