CN215762493U - Low-noise duplex supercharger - Google Patents
Low-noise duplex supercharger Download PDFInfo
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- CN215762493U CN215762493U CN202122008837.9U CN202122008837U CN215762493U CN 215762493 U CN215762493 U CN 215762493U CN 202122008837 U CN202122008837 U CN 202122008837U CN 215762493 U CN215762493 U CN 215762493U
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Abstract
The utility model discloses a low-noise duplex supercharger, which comprises a cylinder body, a control valve, a first large piston, a second large piston, a first left small piston, a first right small piston, a second left small piston and a second right small piston, wherein the cylinder body is provided with a cylinder head; the control valve can control the first large piston and the second large piston to reciprocate in the cylinder body, so that the first left small piston, the first right small piston, the second left small piston and the second right small piston are driven to reciprocate, and pressurized oil is continuously output. The low-noise duplex supercharger can realize duplex work of the piston, continuously output the supercharged oil and obtain more output flow.
Description
Technical Field
The utility model belongs to the technical field of hydraulic elements, and particularly relates to a low-noise duplex supercharger.
Background
At present, the highest pressure grade of a conventional hydraulic system at home and abroad is generally 32-40 Mpa. When a hydraulic system requires a high pressure level of oil, this pressurization is typically accomplished by a reciprocating supercharger. The pressure booster is in the pressure boosting circuit for achieving an oil pressure amplification so that a pressure oil greater than the system pressure is achieved on a certain branch. Reciprocating hydraulic superchargers are widely used at present, but the following problems are encountered when the reciprocating hydraulic superchargers are used:
1. in the prior art, the reciprocating supercharger has smaller output flow due to the limitation of processing cost and structure, and the working frequency of a piston of the reciprocating supercharger is overhigh and the service life is reduced by simply increasing the input flow to improve the output flow; if the piston area is simply increased to achieve the purpose of increasing the flow, the processing difficulty is greatly improved, and the cutter needs to be reordered, so that the production cost is increased;
2. when the reciprocating supercharger works, the pistons are required to drive the small pistons at two sides to do continuous reciprocating motion, so that high-pressure fluid is continuously output, but the small pistons are directly contacted with ultrahigh-pressure fluid and do high-frequency motion, so that friction between the small pistons and the end covers is severe, and the end covers need to be replaced completely after long-time work, so that resource waste is caused;
3. when the reciprocating supercharger works, the end cover needs to be subjected to high-frequency friction with the small piston, so that the whole end cover needs to be subjected to heat treatment, and the cost is high; moreover, due to pressure pulsation, the end cover can crack when working for a long time, and the whole end cover needs to be replaced;
4. when the reciprocating supercharger works, because the reciprocating supercharger is of a single-connection structure, the output high-pressure oil has larger pulsation, further the generated noise is larger, and certain damage is caused to a working system loop;
5. the existing duplex reciprocating supercharger only needs a plurality of high-pressure pipelines for connecting a simple structure of connecting two simplex reciprocating superchargers in parallel, so that the structure is complicated, the cost is high, the number of connecting points is large, and leakage is easy to generate.
SUMMERY OF THE UTILITY MODEL
In order to solve any one or more of the technical problems in the prior art, the utility model provides a low-noise twin supercharger. The low-noise duplex supercharger comprises a cylinder body, a control valve, a first large piston, a second large piston, a first left small piston, a first right small piston, a second left small piston and a second right small piston; the cylinder body is provided with a P port, a T port and an outlet, and the control valve is positioned on the cylinder body;
the first large piston is positioned in the cylinder body and can reciprocate relative to the cylinder body, and a first left large piston cavity and a first right large piston cavity are formed at two ends of the cylinder body and the first large piston respectively; the first left small piston and the first right small piston are both positioned in the cylinder body and are respectively in axial synchronous moving connection with the left end and the right end of the first large piston, a first left small piston cavity is formed between the free end of the first left small piston and the cylinder body, and a first right small piston cavity is formed between the free end of the first right small piston and the cylinder body;
the second large piston is positioned in the cylinder body and can reciprocate relative to the cylinder body, and a second left large piston cavity and a second right large piston cavity are formed at two ends of the cylinder body and the second large piston respectively; the second left small piston and the second right small piston are both positioned in the cylinder body and are respectively in axial synchronous moving connection with the left end and the right end of the second large piston, a second left small piston cavity is formed between the free end of the second left small piston and the cylinder body, and a second right small piston cavity is formed between the free end of the second right small piston and the cylinder body;
when the P port is communicated with the first left large piston cavity and the second right large piston cavity through the control valve, the T port is communicated with the first right large piston cavity and the second left large piston cavity through the control valve, the P port is respectively communicated with the first left small piston cavity and the second right small piston cavity in a one-way mode, and the first right small piston cavity and the second left small piston cavity are respectively communicated with the outlet in a one-way mode;
the P mouth passes through the control valve with first right side big piston chamber with during the big piston chamber intercommunication in second left side, the T mouth passes through the control valve with first left side big piston chamber with the big piston chamber intercommunication in second right side, the P mouth respectively with first right side little piston chamber with the little piston chamber in second left side forms one-way intercommunication, first left side little piston chamber with the little piston chamber in second right side respectively with the export forms one-way intercommunication.
Preferably, the low noise twin supercharger further comprises a first left inlet check valve and a first left outlet check valve; the first left inlet check valve is positioned between the first left small piston cavity and the port P, and oil flows into the first left small piston cavity from the port P in a single direction; the first left side outlet one-way valve is positioned between the first left side small piston cavity and the outlet, and oil flows into the outlet from the first left side small piston cavity in a one-way mode.
Preferably, the low noise twin supercharger further comprises a first right inlet check valve and a first right outlet check valve; the first right inlet check valve is positioned between the first right small piston cavity and the P port, and oil flows into the first right small piston cavity from the P port in a single direction; the first right side outlet one-way valve is positioned between the first right side small piston cavity and the outlet, and oil flows into the outlet from the first right side small piston cavity in a one-way mode.
Preferably, the low noise twin supercharger further comprises a second left inlet check valve and a second left outlet check valve; the second left inlet one-way valve is positioned between the second left small piston cavity and the P port, and oil flows into the second left small piston cavity from the P port in a one-way mode; and the second left outlet one-way valve is positioned between the second left small piston cavity and the outlet, and oil flows into the outlet from the second left small piston cavity in a one-way mode.
Preferably, the low noise twin supercharger further comprises a second right inlet check valve and a second right outlet check valve; the second right inlet one-way valve is positioned between the second right small piston cavity and the P port, and oil flows into the second right small piston cavity from the P port in a one-way mode; and the second right outlet one-way valve is positioned between the second right small piston cavity and the outlet, and oil flows into the outlet from the second right small piston cavity in a one-way manner.
Preferably, the control valve comprises a valve body and a valve core; the valve body is provided with a P1 port, a T1 port, an A port, a B port, an X port and a Y port, the valve core is positioned in the valve body and can axially reciprocate, and the valve core is provided with a connecting groove; the P1 port is in communication with the P port, the T1 port is in communication with the T port; one end of the A port is communicated with the first left large piston cavity and the second right large piston cavity, and the other end of the A port is selectively communicated with the P1 port or the T1 port; one end of the B port is communicated with the first right large piston cavity and the second left large piston cavity, and the other end of the B port is selectively communicated with the P1 port or the T1 port; one end of the X port is communicated with the P port, and the other end of the X port is communicated with the left end of the valve core; one end of the Y port is selectively communicated with the P port or the T port, and the other end of the Y port is communicated with the right end of the valve core; the sectional area of the right end of the valve core is larger than that of the left end of the valve core;
when the Y port is communicated with the T port, the A port is communicated with the P port, and the B port is communicated with the T1 port; when the Y port is communicated with the P port, the A port is communicated with the T1 port, and the B port is communicated with the P1 port.
Preferably, the low-noise dual-connection supercharger further comprises a first left small piston sleeve, a first right small piston sleeve, a second left small piston sleeve and a second right small piston sleeve which are fixedly connected with the cylinder body, and the first left small piston sleeve, the second left small piston sleeve and the second right small piston sleeve are respectively positioned between the cylinder body and the first left small piston, between the cylinder body and the first right small piston, between the cylinder body and the second left small piston and between the cylinder body and the second right small piston.
Preferably, the first left small piston sleeve, the first right small piston sleeve, the second left small piston sleeve and the second right small piston sleeve are respectively and fixedly connected with the cylinder body in a detachable mode.
Preferably, the low-noise duplex supercharger also comprises a limiting ring and a limiting pin; one end of each of the first left small piston sleeve, the first right small piston sleeve, the second left small piston sleeve and the second right small piston sleeve is axially positioned with the cylinder body, and the other end of each of the first left small piston sleeve, the first right small piston sleeve, the second left small piston sleeve and the second right small piston sleeve is axially positioned with the limiting ring; the limiting pin is connected with the cylinder body and the limiting ring so as to fix the position relation between the limiting ring and the cylinder body.
Preferably, the cylinder body adopts a split structure and consists of a main body and an end cover which are detachably connected; the first left small piston, the first right small piston, the second left small piston and the second right small piston are all located on the end cover.
The low-noise duplex supercharger has the following beneficial technical effects:
1. in the utility model, the double-linkage structure is realized and the double-linkage simultaneous work is carried out by arranging the two large pistons and the four small pistons, so that the cross sectional area of the pistons can be smaller than that of the pistons in the single-linkage structure, the processing difficulty is reduced, but the total area is larger, further more flow output can be realized, and the use of more working conditions is met.
2. In the utility model, the piston sleeve is arranged between the small piston and the cylinder body, and the piston sleeve replaces the cylinder body and the small piston to form an assembly relation and mutual friction, so that the piston sleeve can bear abrasion, is convenient to replace and modify, reduces the maintenance cost, and only needs to carry out heat treatment and finish machining on the piston sleeve, reduces the machining cost and improves the machining precision.
3. In the utility model, when a duplex structure is adopted, the two large pistons drive the four small pistons to simultaneously reciprocate, so that an automatic reversing circulation working mode is formed, the output pressurized oil pulsation is more stable and smooth, the noise is reduced, and the whole working system loop is protected.
Drawings
FIG. 1 is a schematic view of the low noise twin supercharger according to the present embodiment;
FIG. 2 is a schematic front view of the low noise twin supercharger of the present embodiment;
FIG. 3 is a schematic top view of the low noise twin supercharger of the present embodiment;
FIG. 4 is a schematic cross-sectional view taken along the direction M-M in FIG. 3;
fig. 5 is a schematic cross-sectional view along the direction N-N in fig. 3.
Detailed Description
The technical solution of the present invention will be further described in detail with reference to the accompanying drawings and embodiments.
As shown in fig. 1 to 5, the low noise twin supercharger of the present embodiment includes a cylinder 1, a control valve 2, a first large piston 31, a second large piston 32, a first left small piston 41, a first right small piston 42, a second left small piston 51, and a second right small piston 52. The cylinder 1 is provided with a port P, a port T and an outlet 11, and the control valve 2 is fixed to the cylinder 1.
The first large piston 31 is located inside the cylinder 1 and can reciprocate relative to the cylinder 1, and a first left large piston chamber 311 and a first right large piston chamber 312 are formed at both ends of the cylinder 1 and the first large piston 31, respectively. The first left small piston 41 and the first right small piston 42 are both located inside the cylinder 1 and are in axial synchronous moving connection with the left end and the right end of the first large piston 31 respectively, a first left small piston cavity 411 is formed between the free end of the first left small piston 41 and the cylinder 1, and a first right small piston cavity 421 is formed between the free end of the first right small piston 42 and the cylinder 1.
The second large piston 32 is located inside the cylinder 1 and can reciprocate with respect to the cylinder 1, and a second left large piston chamber 321 and a second right large piston chamber 322 are formed at both ends of the cylinder 1 and the second large piston 32, respectively. The second left small piston 51 and the second right small piston 52 are both located inside the cylinder 1 and are in axial synchronous moving connection with the left end and the right end of the second large piston 32 respectively, and a second left small piston cavity 511 is formed between the free end of the second left small piston 51 and the cylinder 1, and a second right small piston cavity 521 is formed between the free end of the second right small piston 52 and the cylinder 1.
The cross-sectional area of the first large piston 31 is larger than the cross-sectional areas of the first left small piston 41 and the first right small piston 42. The cross-sectional area of the second large piston 32 is larger than the cross-sectional areas of the second left small piston 51 and the second right small piston 52.
When the port P is communicated with the first left large piston cavity 311 and the second right large piston cavity 322 through the control valve 2, the port T is communicated with the first right large piston cavity 312 and the second left large piston cavity 321 through the control valve 2, and the port P is in one-way communication with the first left small piston cavity 411 and the second right small piston cavity 521 respectively, so that oil at the port P flows into the first left small piston cavity 411 and the second right small piston cavity 521 in one way, the first right small piston cavity 421 and the second left small piston cavity 511 are in one-way communication with the outlet 11 respectively, and the oil in the first right small piston cavity 421 and the second left small piston cavity 511 flows into the outlet 11 in one way.
When the port P is communicated with the first right large piston cavity 312 and the second left large piston cavity 321 through the control valve 2, the port T is communicated with the first left large piston cavity 311 and the second right large piston cavity 322 through the control valve 2, and the port P is in one-way communication with the first right small piston cavity 421 and the second left small piston cavity 511 respectively, so that oil at the port P flows into the first right small piston cavity 421 and the second left small piston cavity 511 in one way, the first left small piston cavity 411 and the second right small piston cavity 521 are in one-way communication with the outlet 11 respectively, and the oil in the first left small piston cavity 411 and the second right small piston cavity 521 flows into the outlet 11 in one way.
Preferably, in the low noise twin supercharger of the present embodiment, a first left inlet check valve 61, a first left outlet check valve 62, a first right inlet check valve 63, a first right outlet check valve 64, a second left inlet check valve 65, a second left outlet check valve 66, a second right inlet check valve 67, and a second right outlet check valve 68 are further included.
The first left inlet check valve 61 is located between the first left small piston chamber 411 and the port P, so that the oil flows into the first left small piston chamber 411 from the port P in a single direction. The first left outlet check valve 62 is located between the first left small piston chamber 411 and the outlet 11, so that oil flows from the first left small piston chamber 411 into the outlet 11 in one direction. The first right inlet check valve 63 is located between the first right small piston chamber 421 and the port P, so that the oil flows into the first right small piston chamber 421 from the port P in one direction. The first right outlet check valve 64 is located between the first right small piston chamber 421 and the outlet 11, so that the oil flows from the first right small piston chamber 421 into the outlet 11 in one direction. The second left inlet check valve 65 is located between the second left small piston chamber 511 and the port P, so that the oil flows into the second left small piston chamber 511 from the port P in a single direction. The second left outlet check valve 66 is located between the second left small piston chamber 511 and the outlet 11, so that the oil flows from the second left small piston chamber 511 into the outlet 11 in one direction. The second right inlet check valve 67 is located between the second right small piston chamber 521 and the port P, so that the oil flows into the second right small piston chamber 521 from the port P in a single direction. The second right outlet check valve 68 is located between the second right small piston chamber 521 and the outlet 11, so that the oil flows from the second right small piston chamber 521 to the outlet 11 in one direction.
Two check valves are arranged at the position of each small piston cavity, and a shuttle valve structure is formed by the two check valves, so that oil can flow into the small piston cavity from the P port in a one-way mode and flow to the outlet from the small piston cavity in a one-way mode, and compression work and output operation of the oil at the P port are achieved.
As shown in fig. 5, the control valve 2 of the present embodiment includes a valve body 21 and a spool 22. The valve body 21 is provided with a port P1, a port T1, a port T2, a port A, a port B, a port X and a port Y, the valve core 22 is positioned inside the valve body 21 and can axially reciprocate, and the valve core 22 is provided with two connecting grooves along the circumferential direction.
The port P1 is in communication with the port P, and the ports T1 and T2 are in communication with the port T. The port A is positioned between the port P1 and the port T1, and one end of the port A is communicated with the first left big piston cavity 311 and the second right big piston cavity 322 through a flow passage positioned in the cylinder body 1, and the other end of the port A is selectively communicated with the port P1 or the port T1. The port B is located between the port P1 and the port T2, and has one end in communication with the first right large piston chamber 312 and the second left large piston chamber 321 and the other end in selective communication with either the port P1 or the port T2. One end of the X port is communicated with the P port through a flow passage in the cylinder body 1, and the other end is communicated with the left end of the valve core 22, so that oil is introduced to drive the valve core 22 to move rightwards. One end of the Y port is selectively communicated with the P port or the T port through a flow passage in the cylinder body 1, and the other end is communicated with the right end of the valve core 22. The right end sectional area of the spool 22 is larger than the left end sectional area of the spool 22.
When the port Y is communicated with the port T, the port A is communicated with the port P1, and the port B is communicated with the port T2. Conversely, when port Y communicates with port P, port A communicates with port T1 and port B communicates with port P1.
Like this, through the case under the poor effect of both ends fluid action force, just reciprocating motion can be carried out to control P mouth and first left side piston chamber and second right side piston chamber and form the intercommunication, T mouth and first right side piston chamber and second left side piston chamber form the intercommunication, perhaps control P mouth and first right side piston chamber and second left side piston chamber form the intercommunication, T mouth and first left side piston chamber and second right side piston chamber form the intercommunication, and then realize the reciprocating motion of first big piston and the big piston of second in the cylinder body.
In the embodiment, the Y port forms a communication relation with the P port or the T port through the flow passage positioned in the cylinder and the annular groove on the surface of the first large piston and the annular groove on the surface of the second large piston, namely, the communication relation between the Y port and the P port and the T port is switched along with the reciprocating movement of the first large piston and the second large piston relative to the cylinder. For example, in the case where the Y port is kept in communication with the annular groove of the second large piston surface and the annular groove of the second large piston surface is kept in communication with the annular groove of the first large piston surface, the annular groove of the first large piston surface is brought into communication with the P port or the T port, respectively, in accordance with the reciprocating movement of the first large piston relative to the cylinder block, thereby achieving switching of the communication relationship of the Y port with the P port and the T port.
In addition, the valve body of the present embodiment is provided with a T1 port and a T2 port which are simultaneously communicated with the T port, but of course, only a T1 port in a three-way form may be provided, and two ports of the T1 port and the T2 port are distributed at the T1 port and the T2 port of the present embodiment by opening a flow passage inside the valve body.
As shown in fig. 4 and 5, the low-noise twin supercharger according to this embodiment further includes a first left small piston sleeve 71, a first right small piston sleeve 72, a second left small piston sleeve 73, and a second right small piston sleeve 74 fixedly connected to the cylinder 1, and the first left small piston sleeve 71, the first right small piston sleeve 72, the second left small piston sleeve 73, and the second right small piston sleeve 74 are respectively located between the cylinder 1 and the first left small piston 41, between the cylinder 1 and the first right small piston 42, between the cylinder 1 and the second left small piston 51, and between the cylinder 1 and the second right small piston 52.
At this time, the piston sleeve, which is held in a fixed position relative to the cylinder, is brought into direct contact with the corresponding small piston. Therefore, the piston sleeve has the advantages that the piston sleeve has the effect of being more convenient to process compared with the cylinder body, the processing cost can be greatly reduced, the matching precision between the piston sleeve and the small piston is improved, and the working efficiency of the low-noise duplex supercharger is improved.
Further, in this embodiment, the first left small piston sleeve 71, the first right small piston sleeve 72, the second left small piston sleeve 73 and the second right small piston sleeve 74 are detachably and fixedly connected to the cylinder 1, respectively. At the moment, in the long-time continuous working process of the low-noise duplex supercharger, the piston sleeve protects the cylinder body, namely, the abrasion of the cylinder body is replaced by the abrasion of the piston sleeve, so that the piston sleeve only needs to be abraded and replaced, and the later maintenance convenience of the low-noise duplex supercharger is improved.
As shown in fig. 4 and 5, in the low-noise twin supercharger of the present embodiment, a limiting ring 81 and a limiting pin 82 are further provided. Wherein, the respective one end of the first left small piston sleeve 71, the first right small piston sleeve 72, the second left small piston sleeve 73 and the second right small piston sleeve 74 respectively forms axial positioning with the cylinder body 1, and the respective other end respectively forms axial positioning with a limit ring 81, and meanwhile, the limit pin 82 forms detachable connection with the cylinder body 1 and the limit ring 81, thereby forming control of the fixed position relation between the limit ring 81 and the cylinder body 1 through the limit pin 82.
Therefore, the position fixing of the limiting ring in the cylinder body is released through the limiting pin, and the position fixing of the corresponding piston sleeve in the cylinder body can be released, so that the corresponding piston sleeve can be disassembled and replaced. Wherein, set up the constant head tank in the spacing ring of this embodiment circumference, and the tip of spacing pin then can follow the radial reciprocating motion that carries on of spacing ring to form and be connected with the cartridge of constant head tank on the spacing ring, and then realize the rigidity to the spacing ring.
Further, in this embodiment, the cylinder body 1 adopts a split structure, and is composed of a main body 1a and two end covers 1b which are detachably connected through bolts. The first left small piston 41, the first right small piston 42, the second left small piston 51 and the second right small piston 52 are located on the two end covers 1b, that is, the first left small piston sleeve 71, the first right small piston sleeve 72, the second left small piston sleeve 73 and the second right small piston sleeve 74 are respectively installed on the two end covers 1 b.
Like this, the processing and the assembly of this low noise pair booster of not only being convenient for, but also be convenient for carry out quick assembly disassembly to corresponding piston sleeve and change, improve the convenience of later maintenance.
In addition, an external pipeline 9 is further provided in the low-noise twin supercharger of the present embodiment, for communicating the first left outlet check valve 62, the first right outlet check valve 64, the second left outlet check valve 66 and the second right outlet check valve 68 located at the two end covers 1b and forming communication with the outlet 11, so as to collect and output all high-pressure oil to the outlet 11 in a centralized manner.
Referring to fig. 1 to 5, the low noise twin supercharger of this embodiment operates as follows:
when the low-noise duplex supercharger is in an initial state, the port P is communicated with the left end of the valve core 22 through the port X, the port A is communicated with the first left large piston cavity 311 and the second right large piston cavity 322 through a flow passage in the cylinder body 1, the port B is communicated with the first right large piston cavity 312 and the second left large piston cavity 321 through a flow passage in the cylinder body 1, and the port T1 and the port T2 are communicated with the port T.
When the low-noise duplex supercharger starts to work, pressure oil passes through the port P, the pressure oil at the port P flows to the left end of the valve core 22 through a flow passage and an X port formed in the cylinder body 1, the right end of the valve core 22 is communicated with the port T through a Y port, the flow passage formed in the cylinder body 1, an annular groove formed in the first large piston 31 and an annular groove formed in the second large piston 32, and the valve core 22 is enabled to keep the position state that the port P1 is communicated with the port A and the port B is communicated with the port T2. At this time, the pressure oil at the P port flows into the first left large piston chamber 311 and the second right large piston chamber 322 through the P1 port and the a port, the oil in the first right large piston chamber 312 and the second left large piston chamber 321 flows to the T port through the B port and the T2 port, and at the same time, the pressure oil at the P port flows to the first left small piston chamber 411 and the second right small piston chamber 521 through the first left inlet check valve 61 and the second right inlet check valve 67, respectively, so that the first large piston 31 drives the first right small piston 42 to move rightward, and forms a pressurization work of a cross section difference for the oil in the first right small piston chamber 421 and flows to the outlet 11 through the first right outlet check valve 64, and the second large piston 32 drives the second left small piston 51 to move leftward, and forms a pressurization work of a cross section difference for the oil in the second left small piston chamber 511 and flows to the outlet 11 through the second left outlet check valve 66, and then the oil is intensively discharged from the outlet 11, so that the pressurized output of the oil is realized.
When the first large piston 31 moves to the rightmost end and the second large piston 32 moves to the leftmost end, the port P is communicated with the right end of the valve core 22 through the annular groove on the second large piston 32, the annular groove on the first large piston 31 and the port Y, and as the sectional area of the right end of the valve core 22 is larger than that of the left end of the valve core 22, the valve core 22 starts to move leftwards under the action force difference of oil liquid at two ends on the valve core 22, so that the port P1 is switched to be communicated with the port B, and the port A is switched to be communicated with the port T1. At this time, the pressure oil at the P port flows into the first right large piston chamber 312 and the second left large piston chamber 321 through the P1 port and the B port, the oil in the first left large piston chamber 311 and the second right large piston chamber 322 flows to the T port through the a port and the T1 port, and at the same time, the pressure oil at the P port flows to the first right small piston chamber 421 and the second left small piston chamber 511 through the first right inlet check valve 63 and the second left inlet check valve 65, respectively, so that the first large piston 31 drives the first left small piston 41 to move leftward, the oil in the first left small piston chamber 411 forms a pressurization work of a cross section difference and flows to the outlet 11 through the first left outlet check valve 62, and the second large piston 32 drives the second right small piston 52 to move rightward, the pressurization work of a cross section difference is formed for the oil in the second right small piston chamber 521, and flows to the outlet 11 through the second right outlet check valve 68, and then the oil is intensively discharged from the outlet 11, so that the pressurized output of the oil is realized.
When the first large piston 31 moves to the leftmost end and the second large piston 32 moves to the rightmost end, the T port is communicated with the right end of the valve core 22 through the annular groove on the second large piston 32, the annular groove on the first large piston 31 and the Y port, and the left end of the valve core 22 is always communicated with the P port through the X port, so that the valve core 22 starts to move rightwards under the action force difference of oil liquid at two ends on the valve core 22, the P1 port is cut back to be communicated with the A port, and the B port is cut back to be communicated with the T2 port. Therefore, under the condition that the port P is communicated with the pressure oil, the valve core is in reciprocating circular movement, so that the first large piston and the second large piston are in reciprocating movement, and the continuous increasing output operation of the pressure oil is realized.
Claims (10)
1. A low-noise duplex supercharger is characterized by comprising a cylinder body, a control valve, a first large piston, a second large piston, a first left small piston, a first right small piston, a second left small piston and a second right small piston; the cylinder body is provided with a P port, a T port and an outlet, and the control valve is positioned on the cylinder body;
the first large piston is positioned in the cylinder body and can reciprocate relative to the cylinder body, and a first left large piston cavity and a first right large piston cavity are formed at two ends of the cylinder body and the first large piston respectively; the first left small piston and the first right small piston are both positioned in the cylinder body and are respectively in axial synchronous moving connection with the left end and the right end of the first large piston, a first left small piston cavity is formed between the free end of the first left small piston and the cylinder body, and a first right small piston cavity is formed between the free end of the first right small piston and the cylinder body;
the second large piston is positioned in the cylinder body and can reciprocate relative to the cylinder body, and a second left large piston cavity and a second right large piston cavity are formed at two ends of the cylinder body and the second large piston respectively; the second left small piston and the second right small piston are both positioned in the cylinder body and are respectively in axial synchronous moving connection with the left end and the right end of the second large piston, a second left small piston cavity is formed between the free end of the second left small piston and the cylinder body, and a second right small piston cavity is formed between the free end of the second right small piston and the cylinder body;
when the P port is communicated with the first left large piston cavity and the second right large piston cavity through the control valve, the T port is communicated with the first right large piston cavity and the second left large piston cavity through the control valve, the P port is respectively communicated with the first left small piston cavity and the second right small piston cavity in a one-way mode, and the first right small piston cavity and the second left small piston cavity are respectively communicated with the outlet in a one-way mode;
the P mouth passes through the control valve with first right side big piston chamber with during the big piston chamber intercommunication in second left side, the T mouth passes through the control valve with first left side big piston chamber with the big piston chamber intercommunication in second right side, the P mouth respectively with first right side little piston chamber with the little piston chamber in second left side forms one-way intercommunication, first left side little piston chamber with the little piston chamber in second right side respectively with the export forms one-way intercommunication.
2. The low noise twin supercharger of claim 1, further comprising a first left inlet check valve and a first left outlet check valve; the first left inlet check valve is positioned between the first left small piston cavity and the port P, and oil flows into the first left small piston cavity from the port P in a single direction; the first left side outlet one-way valve is positioned between the first left side small piston cavity and the outlet, and oil flows into the outlet from the first left side small piston cavity in a one-way mode.
3. The low noise twin supercharger of claim 1, further comprising a first right inlet check valve and a first right outlet check valve; the first right inlet check valve is positioned between the first right small piston cavity and the P port, and oil flows into the first right small piston cavity from the P port in a single direction; the first right side outlet one-way valve is positioned between the first right side small piston cavity and the outlet, and oil flows into the outlet from the first right side small piston cavity in a one-way mode.
4. The low noise twin supercharger of claim 1, further comprising a second left inlet check valve and a second left outlet check valve; the second left inlet one-way valve is positioned between the second left small piston cavity and the P port, and oil flows into the second left small piston cavity from the P port in a one-way mode; and the second left outlet one-way valve is positioned between the second left small piston cavity and the outlet, and oil flows into the outlet from the second left small piston cavity in a one-way mode.
5. The low noise twin supercharger of claim 1, further comprising a second right inlet check valve and a second right outlet check valve; the second right inlet one-way valve is positioned between the second right small piston cavity and the P port, and oil flows into the second right small piston cavity from the P port in a one-way mode; and the second right outlet one-way valve is positioned between the second right small piston cavity and the outlet, and oil flows into the outlet from the second right small piston cavity in a one-way manner.
6. The low noise twin supercharger of any one of claims 1-5, wherein the control valve comprises a valve body and a valve spool; the valve body is provided with a P1 port, a T1 port, an A port, a B port, an X port and a Y port, the valve core is positioned in the valve body and can axially reciprocate, and the valve core is provided with a connecting groove; the P1 port is in communication with the P port, the T1 port is in communication with the T port; one end of the A port is communicated with the first left large piston cavity and the second right large piston cavity, and the other end of the A port is selectively communicated with the P1 port or the T1 port; one end of the B port is communicated with the first right large piston cavity and the second left large piston cavity, and the other end of the B port is selectively communicated with the P1 port or the T1 port; one end of the X port is communicated with the P port, and the other end of the X port is communicated with the left end of the valve core; one end of the Y port is selectively communicated with the P port or the T port, and the other end of the Y port is communicated with the right end of the valve core; the sectional area of the right end of the valve core is larger than that of the left end of the valve core;
when the Y port is communicated with the T port, the A port is communicated with the P1 port, and the B port is communicated with the T2 port; when the Y port is communicated with the P port, the A port is communicated with the T1 port, and the B port is communicated with the P1 port.
7. The low noise twin supercharger of any one of claims 1-5, further comprising a first left small piston sleeve, a first right small piston sleeve, a second left small piston sleeve and a second right small piston sleeve fixedly connected to the cylinder block and respectively located between the cylinder block and the first left small piston, between the cylinder block and the first right small piston, between the cylinder block and the second left small piston and between the cylinder block and the second right small piston.
8. The low-noise twin supercharger of claim 7, wherein the first left small piston sleeve, the first right small piston sleeve, the second left small piston sleeve and the second right small piston sleeve are detachably and fixedly connected with the cylinder body respectively.
9. The low noise twin supercharger of claim 8, further comprising a limit ring and a limit pin; one end of each of the first left small piston sleeve, the first right small piston sleeve, the second left small piston sleeve and the second right small piston sleeve is axially positioned with the cylinder body, and the other end of each of the first left small piston sleeve, the first right small piston sleeve, the second left small piston sleeve and the second right small piston sleeve is axially positioned with the limiting ring; the limiting pin is connected with the cylinder body and the limiting ring so as to fix the position relation between the limiting ring and the cylinder body.
10. The low-noise twin supercharger according to any one of claims 1 to 5, wherein the cylinder body is of a split structure and is composed of a main body and an end cover which are detachably connected; the first left small piston, the first right small piston, the second left small piston and the second right small piston are all located on the end cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122008837.9U CN215762493U (en) | 2021-08-25 | 2021-08-25 | Low-noise duplex supercharger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122008837.9U CN215762493U (en) | 2021-08-25 | 2021-08-25 | Low-noise duplex supercharger |
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| Publication Number | Publication Date |
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| CN215762493U true CN215762493U (en) | 2022-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122008837.9U Active CN215762493U (en) | 2021-08-25 | 2021-08-25 | Low-noise duplex supercharger |
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| Country | Link |
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| CN (1) | CN215762493U (en) |
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