CN211900932U

CN211900932U - Air compressor modified by diesel engine

Info

Publication number: CN211900932U
Application number: CN202020241353.1U
Authority: CN
Inventors: 张树德; 张柏坤; 张绍颖
Original assignee: Hebei Nade Machinery Co ltd
Current assignee: Hebei Nade Machinery Co ltd
Priority date: 2020-03-03
Filing date: 2020-03-03
Publication date: 2020-11-10
Anticipated expiration: 2030-03-03

Abstract

The utility model discloses an air compressor machine by diesel engine repacking, belong to the air compressor machine field, come by the diesel engine repacking, including cylinder block and gas collection device, the cylinder block is equipped with a cylinder that is used for compressed gas at least, be equipped with the admission line on the cylinder block, exhaust duct, a camshaft for replacing the check valve of former diesel engine fuel sprayer and being used for controlling respectively the admission valve and open and close and the exhaust valve switching, it is protruding to be equipped with the cam that is used for controlling admission valve or exhaust valve switching on the camshaft, the cam arch of controlling same admission valve or same exhaust valve is equipped with two, and the rotatory 180 degrees symmetry settings in center about the camshaft, the mounting means of control camshaft admission valve and control exhaust valve camshaft is the same, the admission valve and the exhaust valve that make control single cylinder open simultaneously under the drive of. The utility model discloses utilize original diesel engine to reform transform, the transformation is with low costs, and compressed air is efficient, and later maintenance is convenient, and durable is applicable to all air compressors.

Description

Air compressor modified by diesel engine

Technical Field

The utility model belongs to the air compressor machine field, specifically speaking are air compressor machine by diesel engine repacking.

Background

The air compressor is also called as an air compressor, air is compressed by utilizing the reciprocating motion of the piston in the cylinder body and then collected in the air collecting bottle, and the compressed air has the characteristics of high pressure, small occupied space, easiness in storage, convenience in transportation and the like, so that the air compressed by the air compressor is widely applied to various fields. The compressed air is utilized by common spray painting, tire inflation, bottle blowing machines, oil well fracturing, high-pressure air explosion coal mining, food in the pharmaceutical industry, slurry mixing by compressed air, vehicle braking, door and window opening and closing and the like in our lives. The use of compressed air brings convenience for our production and life.

In the prior art, a common air compressor compresses air by utilizing reciprocating motion of a piston in a cylinder body, but the development of the air compressor in the prior art is relatively lagged, and the air compressor also has the defects of low working pressure, incapability of meeting the production requirements of special manufacturing industries, high production cost, high later maintenance cost, relatively low manufacturing precision and the like. Chinese patent ZL201710463322.3 discloses an air compressor machine based on diesel engine technology repacking, and the air compressor machine in this patent is derived by the diesel engine repacking, because the diesel engine is similar with air compressor machine theory of operation, consequently, through the drive ratio of the cam structure, the bent axle gear of changing control diesel engine intake valve and exhaust valve and camshaft gear among the above-mentioned patent document, becomes the compression process of air with the process of doing work of diesel engine. The air compressor is obtained by modifying a diesel engine with mature technical development, the manufacturing cost of the air compressor is reduced, and the quality of the air compressor is improved. However, this modification has the following disadvantages: the air compressor machine after the transformation need change the drive ratio of crankshaft gear and camshaft gear and the cam on the camshaft, consequently, the original drive gear of diesel engine need reprocess the preparation, has not only increased the transformation cost, if the preparation precision can not reach the requirement, still can make the quality reduction of air compressor machine, causes the incident even. Meanwhile, if the customized transmission gear is replaced independently, if the transmission gear is damaged, the universality of parts is low, the parts are not easy to buy in the market, and the replacement is troublesome. How under the condition that reduces the change as far as possible, still can accomplish the function of air compressor machine, and guarantee the quality, be for the problem that awaits solving.

SUMMERY OF THE UTILITY MODEL

For solving exist among the prior art more than not enough, the utility model aims at providing an air compressor machine by the diesel engine repacking to reach the purpose that transformation cost is low, later maintenance is convenient, improve air compression efficiency.

In order to achieve the above object, the utility model adopts the following technical scheme: an air compressor modified by a diesel engine is modified by the diesel engine and comprises a cylinder body and a gas collecting device, wherein the cylinder body is at least provided with a cylinder for compressing gas, the cylinder comprises a crankshaft for driving a piston to reciprocate, the cylinder body is provided with an air inlet pipeline, an exhaust pipeline, a one-way valve for replacing an original diesel engine oil nozzle and a cam shaft for respectively controlling the opening and closing of an air inlet valve and an exhaust valve, and the one-way valve connects an inner cavity of the cylinder with the gas collecting device through a gas collecting pipeline; the air intake valve camshaft and the exhaust valve camshaft are symmetrically arranged by rotating 180 degrees around the center of the camshaft, the installation modes of the air intake valve camshaft and the exhaust valve camshaft are controlled to be the same, and the air intake valve and the exhaust valve of a single air cylinder are controlled to be opened simultaneously under the driving of the crankshaft for air intake.

As to the utility model limit: the camshaft mounting mode is as follows: in the initial state, the straight line where the cam bulge on the camshaft is located is vertical to the axis of the piston, and the piston is located at the top dead center.

As a further limitation to the present invention: the air compressor is obtained by modifying a diesel engine provided with six cylinders, a first cylinder and a sixth cylinder form a first compression group, a second cylinder and a fifth cylinder form a second compression group, a third cylinder and a fourth cylinder form a third compression group, and angles of straight lines where cam protrusions on a cam shaft corresponding to the first compression resistor, the second compression group and the third compression group sequentially differ by 60 degrees.

As another limitation to the present invention: the air compressor machine includes first cooling circulation mechanism and is used for flowing into and collecting the second cooling circulation mechanism of cooling for compressed gas, first cooling circulation mechanism is the original cylinder block cooling circulation mechanism of diesel engine, the pipeline of second cooling circulation mechanism passes through admission line, gas collection pipeline and exhaust duct in proper order, and the delivery port of water pump among the entry linkage cylinder block cooling circulation mechanism of pipeline, the exit linkage cylinder block cooling circulation mechanism's of pipeline water tank.

As to the utility model limit: the gas collecting pipeline is an inner and outer sleeve double-wall pipeline, the inner pipeline is a compressed gas circulation pipeline, the outer pipeline is a cooling liquid circulation pipeline, and the cooling liquid circulation pipeline is connected with the pipeline of the second cooling circulation mechanism through a branch pipe.

As to the third limitation of the present invention: the free ports of the air inlet pipeline and the exhaust pipeline of the original diesel engine are both connected with a supercharging mechanism.

Since the technical scheme is used, compared with the prior art, the utility model, the beneficial effect who gains lies in:

(1) the utility model discloses utilize the diesel engine that has developed maturity among the prior art to reform transform, become two strokes of breathing in and compression in the air compressor machine with four strokes in the diesel engine, through changing the protruding structure of cam on control intake valve camshaft and the exhaust valve camshaft, become all admit air with intake valve and exhaust valve in the diesel engine, increase the air input in the cylinder block, improve compressed air's efficiency, only change the protruding structure of cam on the camshaft and just can realize the compression of air, the transformation of drive gear in the drive mechanism has been avoided, the transformation cost is saved, the inconvenience of later maintenance change has been avoided, to the less of former diesel engine transformation, the risk of unknown trouble just is lower, the quality of air compressor machine just is better;

(2) the straight line where the cam bulge on the camshaft is positioned is vertical to the piston, the initial position of the piston is at the top dead center, and when the piston moves towards the bottom dead center, the inlet valve and the exhaust valve are gradually opened to the maximum, so that the maximum air inflow is ensured, and the efficiency of gas compression is increased;

(3) the sequence of the compressed air of the six cylinders of the utility model is different, which can not only prevent the pressure from being too large in the process of collecting the air, but also improve the compression efficiency;

(4) the utility model is provided with two groups of cooling circulation mechanisms which respectively cool the cylinder body and the pipeline through which the gas flows, thereby not only ensuring the safety of the cylinder body, but also ensuring the stability of the compressed gas, most of the two groups of cooling circulation mechanisms utilize the cooling system of the original diesel engine, only a plurality of pipelines are added for increasing the cooling effect, and the reconstruction cost is lower;

(5) the gas collecting pipeline of the utility model is an inner and outer sleeve double-wall pipeline, which can not only circulate the gas, but also circulate the cooling liquid, and the cooling liquid is coated around the gas, thus the cooling effect is good, the space is saved, and the reconstruction cost is reduced;

(6) the utility model discloses still set up booster mechanism, can increase the air input in the cylinder, improved the compression efficiency of air compressor machine.

To sum up, the utility model discloses utilize original diesel engine to reform transform, reform transform with low costsly, compressed air's is efficient, and later maintenance is convenient, and durable is applicable to all air compressors.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments;

fig. 1 is a schematic view of an air intake state of a cylinder 2 according to an embodiment of the present invention;

fig. 2 is a schematic view of the compression state of the cylinder 2 according to the embodiment of the present invention;

fig. 3 is a schematic structural view of the cam projection 6 on the camshaft 5 according to the embodiment of the present invention.

In the figure: 1-cylinder block, 2-cylinder, 3-air inlet pipeline, 4-exhaust pipeline, 5-camshaft, 6-cam projection, 7-piston, 8-one-way valve, 9-gas collecting pipeline, 10-gas collecting bottle, 11-inlet valve, 12-exhaust valve and 13-crankshaft.

Detailed Description

The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the diesel engine modified air compressor described herein is a preferred embodiment, and is only used for illustrating and explaining the present invention, and does not constitute a limitation of the present invention.

Embodiment is by air compressor machine of diesel engine repacking

As shown in fig. 1, 2 and 3, the present embodiment provides an air compressor refitted from a diesel engine, and the air compressor of the present embodiment adopts a 6-135 diesel engine in the prior art as a sample of the refitting, the diesel engine has six cylinders 2, and the six cylinders 2 each include a piston 7, and the six pistons 7 are respectively connected to a crankshaft 13 through six connecting rods, so as to convert the reciprocating motion of the piston 7 into the rotation of the crankshaft 13. The cylinder body 1 of the diesel engine is provided with a cylinder body 3, an exhaust pipeline 4, a camshaft 5 for controlling the opening and closing of an intake valve 11 and a camshaft 5 for controlling the opening and closing of an exhaust valve 12, and a crankshaft 13 is linked with the camshaft 5 to complete the work of a piston 7. The work of the diesel engine is generated by combustion of oil, four strokes are needed to complete (namely air suction, compression, explosion and exhaust) to generate power, the air compressor only needs to compress air and then discharge and collect the air, and the first two strokes of the diesel engine are the process of compressing air, so that the working principles of the two strokes are very similar, and the compression of the air can be completed only by adopting the first two strokes of the diesel engine. The specific structural modification is as follows:

because the transmission ratio of the crankshaft 13 and the camshaft 5 of the original diesel engine is 2:1, when the crankshaft 13 rotates 720 degrees to drive the piston 7 to reciprocate to generate four strokes, the camshaft 5 for controlling the opening and closing of the air inlet valve 11 and the opening and closing of the exhaust valve 12 rotates 360 degrees, namely, the cam bulge 6 on the camshaft 5 for controlling the opening and closing of the air inlet valve 11 is contacted with the air inlet valve 11 once, the air inlet valve 11 is opened once for air inlet, the cam bulge 6 on the camshaft 5 for controlling the opening and closing of the exhaust valve 12 is contacted with the exhaust valve 12 once, and the exhaust valve 12 is opened once for exhaust. The air compressor only needs two processes of air intake and compression, so that air compression can be completed only through two strokes, namely the crankshaft 13 rotates 360 degrees, the camshaft 5 rotates 180 degrees, the cam protrusions 6 on the camshaft 5 are in contact with the air intake valves 11 once, and the air intake valves 11 are opened to be closed once.

In order to realize the functions and save the time of the piston 7 for doing work, the exhaust stroke in the original diesel engine is omitted in the embodiment, the exhaust pipeline 4 of the original diesel engine is changed into air intake, and the original exhaust valve 12 and the original intake valve 11 are opened simultaneously (which are used as the intake valve of the air compressor together), so that the installation mode of the camshaft 5 for controlling the opening and closing of the exhaust valve 12 is the same as that of the camshaft 5 for controlling the opening and closing of the intake valve 11, and the intake valve 11 and the exhaust valve 12 are ensured to be opened simultaneously and are both. In order to discharge compressed gas, the oil nozzle of the original diesel engine is changed into a one-way valve 8. The check valve 8 is fixedly arranged on the cylinder body 1, and the check valve 8 of the embodiment adopts a pressure valve in the prior art, so that compressed gas can be discharged from the cylinder 2 only through the check valve 8 after reaching a certain pressure. 8 one end of check valve is connected with the inner chamber of cylinder 2, and one end is connected with gas collection pipeline 9, and gas collection device is used for collecting the gas after the compression, and the gas collection device of this embodiment is gas collecting bottle 10 to the other end of gas collection pipeline 9. In order to ensure the pressure of the compressed air, the gas collecting bottle 10 of the present embodiment is further provided with a pressure gauge for convenient observation and adjustment.

Because combustion of oil is not needed, and a combustion stroke is not needed, the crankshaft 13 rotates 360 degrees, the camshaft 5 rotates 180 degrees, primary air compression is completed, in order to improve the working efficiency and ensure that the camshaft 5 can normally compress air when rotating for the next 180 degrees, the cam lobe 6 on the camshaft 5 is modified, as shown in FIG. 3, in the same cylinder 2, the camshaft 5 is the same as the original diesel engine, and is a cylinder with the diameter R1 of 20cm, and the original convex shape of the cam lobe 6 for controlling the opening and closing of the intake valve 11 or the exhaust valve 12 on the same cylinder 2 is not changed, only the number of the cam lobes 6 is set to be two, and the two cam lobes 6 are symmetrically arranged 180 degrees around the center of the camshaft 5 to form a pair of lobes, that is, the camshaft 5 rotates once, the intake valve 11 opens twice, and intake air is taken into the cylinder 2 twice. In the present embodiment, since six cylinders 2 are provided, six pairs of cam lobes 6 are provided on one camshaft 5.

When the piston 7 moves to the bottom dead center, the cavity in the cylinder 2 is the largest, and in order to ensure the maximum amount of gas entering in the cavity of the cylinder 2, both the intake valve 11 and the exhaust valve 12 of the original diesel engine need to be opened to the largest state, therefore, the installation modes of the camshaft 5 for controlling the opening and closing of the intake valve 11 and the camshaft 5 for controlling the opening and closing of the exhaust valve 12 (the initial states of the camshaft 5 and the crankshaft 13) are the same, both the piston 7 is positioned at the top dead center, and the straight line of the cam protrusion 6 on the camshaft 5 is perpendicular to the axis of the piston 7, namely, is positioned on the horizontal line. When the crankshaft 13 rotates 180 degrees at the bottom dead center, the camshaft 5 rotates 90 degrees, and the intake valve 11 and the exhaust valve 12 are simultaneously opened to the maximum state. The cam protrusions 6 on the cam shaft 5 are arc-shaped protrusions, so that opening and closing of the intake valve 11 and the exhaust valve 12 are slowly transited, and friction resistance is reduced.

In the embodiment, the cylinder body 1 of the diesel engine is provided with six cylinders 2, the original work of the six cylinders 2 is that the first cylinder, the fifth cylinder, the third cylinder, the second cylinder, the fourth cylinder and the sixth cylinder work in sequence, after improvement, the first cylinder and the sixth cylinder work simultaneously to form a first air compressor set, the second cylinder and the fifth cylinder work simultaneously to form a second air compressor set, the third cylinder and the fourth cylinder work simultaneously to form a third air compressor set, the cam arrangement directions of the cam shafts 5 for controlling the first cylinder and the sixth cylinder are consistent, the cam arrangement directions of the cam shafts 5 for controlling the second cylinder and the fifth cylinder are consistent, the cam arrangement directions of the cam shafts 5 for controlling the third cylinder and the fourth cylinder are consistent, and the angles of straight lines where the cam bulges 6 on the cam shafts 5 corresponding to each other of the first compression resistor, the second compression resistor and the third compression resistor sequentially differ by 60 degrees, namely, the first compression group firstly compresses air, the second compression group then compresses air, and the third compression group finally compresses air.

The air compressor machine of this embodiment includes first cooling circulation mechanism and second cooling circulation mechanism, first cooling circulation mechanism is 1 cooling circulation mechanism of the original cylinder block of diesel engine, and the heat that produces for the cylinder 2 compressed gas acting in the cylinder block 1 lowers the temperature. The second cooling circulation mechanism cools the gas input into the cylinder 2 at a high speed and cools the high-pressure and high-temperature gas after collection and compression. And the pipeline of the second cooling circulation mechanism sequentially passes through the cylinder body 3, the gas collecting pipeline 9 and the exhaust pipeline 4, and cooling liquid is introduced into the pipeline for cooling. An inlet in the pipeline is connected with a water outlet of a water pump in the cooling circulation mechanism of the cylinder block 1 and is used for flowing in cooling liquid, and an outlet of the pipeline is connected with a water tank of the cooling circulation mechanism of the cylinder block 1 and is used for collecting the cooling liquid. The gas collection pipeline 9 is flowed through to the interlude of second cooling circulation mechanism pipeline, and in order to make things convenient for gaseous collection and cooling, the gas collection pipeline 9 of this embodiment is inside and outside cover double-walled pipeline, and the interior pipeline is the gas circulation pipeline after the compression, and the outer pipeline is coolant circulation pipeline, coolant circulation pipeline and second cooling circulation mechanism's tube coupling, and through a plurality of branch connection between the two, carry out the circulation of coolant liquid.

In order to ensure that gas can rapidly enter the cylinder 2, the present embodiment is further provided with a pressurization mechanism, and the free ports of the cylinder block 3 and the exhaust pipeline 4 of the original diesel engine are both connected with the pressurization mechanism. The supercharging mechanism adopts a fan in the prior art.

Claims

1. An air compressor modified by a diesel engine is modified by the diesel engine and comprises a cylinder body and a gas collecting device, wherein the cylinder body is at least provided with a cylinder for compressing gas, the cylinder comprises a crankshaft for driving a piston to reciprocate, the cylinder body is provided with an air inlet pipeline, an exhaust pipeline, a one-way valve for replacing an original diesel engine oil nozzle and a cam shaft for respectively controlling the opening and closing of an air inlet valve and an exhaust valve, and the one-way valve connects an inner cavity of the cylinder with the gas collecting device through a gas collecting pipeline; still include the drive mechanism who is used for control bent axle and camshaft linkage, its characterized in that: the camshaft is provided with two cam bulges used for controlling the opening and closing of the intake valve or the exhaust valve, the two cam bulges used for controlling the same intake valve or the same exhaust valve are symmetrically arranged by rotating 180 degrees around the center of the camshaft, the installation modes of the camshaft used for controlling the intake valve and the camshaft used for controlling the exhaust valve are the same, and the intake valve and the exhaust valve used for controlling a single cylinder are simultaneously opened under the driving of the crankshaft.

2. The diesel engine retrofitted air compressor of claim 1, wherein: the camshaft mounting mode is as follows: in the initial state, the straight line where the cam bulge on the camshaft is located is vertical to the axis of the piston, and the piston is located at the top dead center.

3. The diesel engine retrofitted air compressor of claim 2, wherein: the air compressor is obtained by modifying a diesel engine provided with six cylinders, a first cylinder and a sixth cylinder form a first compression group, a second cylinder and a fifth cylinder form a second compression group, a third cylinder and a fourth cylinder form a third compression group, and angles of straight lines where cam protrusions on a cam shaft corresponding to the first compression resistor, the second compression group and the third compression group sequentially differ by 60 degrees.

4. The diesel engine-retrofitted air compressor according to any one of claims 1-3, wherein: the air compressor machine includes first cooling circulation mechanism and is used for flowing into and collecting the second cooling circulation mechanism of cooling for compressed gas, first cooling circulation mechanism is the original cylinder block cooling circulation mechanism of diesel engine, the pipeline of second cooling circulation mechanism passes through admission line, gas collection pipeline and exhaust duct in proper order, and the delivery port of water pump among the entry linkage cylinder block cooling circulation mechanism of pipeline, the exit linkage cylinder block cooling circulation mechanism's of pipeline water tank.

5. The diesel engine retrofitted air compressor of claim 4, wherein: the gas collecting pipeline is an inner and outer sleeve double-wall pipeline, the inner pipeline is a compressed gas circulation pipeline, the outer pipeline is a cooling liquid circulation pipeline, and the cooling liquid circulation pipeline is connected with the pipeline of the second cooling circulation mechanism through a branch pipe.

6. The diesel engine retrofitted air compressor of claim 4, wherein: the free ports of the air inlet pipeline and the exhaust pipeline of the original diesel engine are both connected with a supercharging mechanism.

7. The diesel engine-retrofitted air compressor according to any one of claims 1-3 and 5, wherein: the free ports of the air inlet pipeline and the exhaust pipeline of the original diesel engine are both connected with a supercharging mechanism.