CN111120427A - Double-plunger supercharger - Google Patents
Double-plunger supercharger Download PDFInfo
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- CN111120427A CN111120427A CN202010109529.2A CN202010109529A CN111120427A CN 111120427 A CN111120427 A CN 111120427A CN 202010109529 A CN202010109529 A CN 202010109529A CN 111120427 A CN111120427 A CN 111120427A
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- 239000007788 liquid Substances 0.000 claims description 38
- 238000004891 communication Methods 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000009977 dual effect Effects 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 3
- 230000010354 integration Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 80
- 239000010720 hydraulic oil Substances 0.000 description 19
- 238000009434 installation Methods 0.000 description 5
- 238000005034 decoration Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B3/00—Intensifiers or fluid-pressure converters, e.g. pressure exchangers; Conveying pressure from one fluid system to another, without contact between the fluids
Abstract
The invention discloses a double-plunger supercharger, which comprises a supercharger body, wherein a mounting hole is formed in the supercharger body, and a P port and a T port which are communicated with the mounting hole are formed in the side surface of the supercharger body; a left end cover is arranged on the left side of the machine body, and a right end cover is arranged on the right side of the machine body; the left end cover comprises a left body, the left body is provided with a left convex column, and the right end of the left convex column is provided with a left two convex columns; the right end cover comprises a right body, the right body is provided with a right convex column, and the left end of the right convex column is provided with two right convex columns; a cylinder sleeve is connected in the mounting hole in a sliding manner; a power piston is connected in the cylinder sleeve in a sliding manner; a left piston cavity is formed between the left end of the power piston and the left two convex columns in the cylinder sleeve, and a right piston cavity is formed between the right end of the power piston and the right two convex columns; a left pump assembly is arranged in the left end cover, and a right pump assembly is arranged in the right end cover; the double-plunger supercharger has the advantages of high integration of the whole design, space saving and part saving, reduction of oil paths, simple control and no need of electric control.
Description
Technical Field
The invention belongs to the technical field of superchargers, and particularly relates to a four-plunger supercharger.
Background
The superchargers used in the market at present are mainly the traditional single-plunger supercharger and the double-plunger reciprocating supercharger. The single-plunger booster cannot ensure the continuity of the single-plunger booster during pressure output and cannot meet a plurality of high-pressure working requirements, and the double-plunger reciprocating booster can realize continuous pressure output, but the reversing instant output pressure is zero, so that the output high pressure generates pulsation and cannot be used in certain occasions requiring constant pressure; although a double-cylinder four-plunger pressure booster, such as a four-plunger hydraulic pressure booster with application number 201810417249.0, appears in the market at present, in order to control the continuous action of a first pressure cylinder and a second pressure cylinder, a mode that two pistons mutually control the direction of an opposite oil path is adopted, and the included oil path is complex, the control is complex, the structure is complex, the volume is large, and the cost is high; and because the control is complicated and the oil circuit is complicated, when a fault occurs, the problem is not easy to be checked, and the maintenance is not convenient.
Disclosure of Invention
The invention aims to provide a double-plunger supercharger which is highly integrated in overall design, saves space and parts, reduces oil passages, is simple to control, has stable output pressure and does not need electric control.
In order to achieve the purpose, the invention provides the following technical scheme:
a double-plunger supercharger comprises a supercharger body, wherein a left-right through mounting hole is formed in the supercharger body, and a P port and a T port which are communicated with the mounting hole are formed in the side face of the supercharger body; a left end cover is fixedly arranged at the left side of the machine body at the left end of the mounting hole, and a right end cover is fixedly arranged at the right end of the mounting hole at the right side of the machine body; the left end cover comprises a left body arranged on the machine body, the left body is provided with a left convex column extending into the mounting hole, the right end of the left convex column extends axially along the mounting hole and is provided with a left two convex columns, the right end cover comprises a right body arranged on the machine body, the right body is provided with a right convex column extending into the mounting hole, the left end of the right convex column extends axially along the mounting hole and is provided with a right two convex columns, and the left convex column, the left two convex columns, the right one convex column and the right two convex columns are all arranged coaxially with the mounting hole; a cylinder sleeve is connected in the mounting hole between the left convex column and the right convex column in a sliding manner, the left two convex columns extend into the left end of the cylinder sleeve, and the right two convex columns extend into the right end of the cylinder sleeve; a power piston is connected between the left two convex columns and the right two convex columns in the cylinder sleeve in a sliding manner; a left piston cavity is formed between the left end of the power piston and the left two convex columns in the cylinder sleeve, and a right piston cavity is formed between the right end of the power piston and the right two convex columns; a left pump assembly driven by the power piston is arranged in the left end cover, and a right pump assembly driven by the power piston is arranged in the right end cover; when the power piston is close to the left two convex columns, the cylinder sleeve moves rightwards, so that the port P is communicated with the left piston cavity, the port T is communicated with the right piston cavity, when the power piston is close to the right two convex columns, the cylinder sleeve moves leftwards, so that the port P is communicated with the right piston cavity, and the port T is communicated with the left piston cavity.
In a further technical scheme, the left pump assembly comprises a left liquid inlet one-way valve and a left liquid outlet one-way valve, a left pump hole communicated with the left piston cavity is formed in the left end cover, and a left plunger extending into the left pump hole is arranged at the left end of the power piston; a left pump cavity is formed between the left end of the left pump hole and the left end of the left plunger in the left pump hole, and the left liquid inlet one-way valve and the left liquid outlet one-way valve are arranged in the left end cover and are communicated with the left pump cavity;
the right pump assembly comprises a right liquid inlet one-way valve and a right liquid outlet one-way valve, a right pump hole communicated with the right piston cavity is formed in the right end cover, and a right plunger extending into the right pump hole is arranged at the right end of the power piston; and a right pump cavity is formed between the right end of the right pump hole and the right end of the right plunger in the right pump hole, and the right liquid inlet check valve and the right liquid outlet check valve are installed in the right end cover and are communicated with the right pump cavity.
In a further technical scheme, a left annular hole is formed between the inner side wall of the mounting hole and the outer circumferential side surface of the left first convex column, a left convex sleeve extending into the left annular hole is arranged at the left end of the cylinder sleeve, and a left second annular hole is formed between the inner side wall of the left convex sleeve and the outer circumferential side surface of the left second convex column; a left control cavity is formed between the left end of the left convex sleeve and the left end cover in the left first annular hole, and a left second control cavity is formed between the left end of the cylinder sleeve and the right end of the left convex column in the left second annular hole; the left piston cavity is communicated with the left second control cavity through a left damper; a left one-way valve is arranged in the machine body, an inlet of the left one-way valve is communicated with the P port, an outlet of the left one-way valve is communicated with the left control cavity, and a left two-way valve is arranged in the left end cover; the inlet of the left one-way valve is communicated with the left control cavity, the outlet of the left one-way valve is communicated with the liquid discharge pipe, and the opening pressure of the left one-way valve is greater than that of the left one-way valve;
a right annular hole is formed between the inner side wall of the mounting hole and the outer circumferential side surface of the right first convex column, a right convex sleeve extending into the right annular hole is arranged at the right end of the cylinder sleeve, and a right annular hole is formed between the inner side wall of the right convex sleeve and the outer circumferential side surface of the right second convex column; a right control cavity is formed between the right end of the right convex sleeve and the right end cover in the right annular hole, and a right control cavity is formed between the right end of the cylinder sleeve and the left end of the right convex column in the right annular hole; the right piston cavity is communicated with the right two control cavities through a right damper; a right one-way valve is arranged in the machine body, an inlet of the right one-way valve is communicated with the P port, an outlet of the right one-way valve is communicated with the right control cavity, and a right two-way valve is arranged in the right end cover; the inlet of the right two one-way valves is communicated with the right one-way control cavity, the outlet of the right two one-way valves is communicated with the liquid discharge pipe, and the opening pressure of the right two one-way valves is greater than that of the right one-way valve;
when the power piston is close to the left two convex columns, the left first control cavity is communicated with the left two control cavities, and the right two control cavities are communicated with the T port; when the power piston is close to the right two convex columns, the right control cavity is communicated with the right two control cavities, and the left two control cavities are communicated with the T port;
a middle ring groove communicated with the P port is formed in the middle of the inner side wall of the mounting hole, and a left ring groove and a right ring groove communicated with the T port are formed in the inner side wall of the mounting hole on two sides of the middle ring groove; the side surface of the outer circumference of the cylinder sleeve is provided with a left second ring groove communicated with the left piston cavity and a right second ring groove communicated with the right piston cavity; when the cylinder sleeve is close to the left convex column, the middle annular groove is communicated with the right annular groove, the left second annular groove is communicated with the left first annular groove, when the cylinder sleeve is close to the right convex column, the middle annular groove is communicated with the left second annular groove, and the right second annular groove is communicated with the right first annular groove.
Through the technical scheme, when the cylinder sleeve moves leftwards, the right control cavity is vacuumized, oil at the P port enters the right control cavity through the right one-way valve, meanwhile, the oil in the left control cavity is compressed and discharged through the one-way valve of the left two; therefore, the displacement of the double-plunger supercharger can be increased while the power piston is reversed.
In a further technical scheme, a first communicating hole communicated with the P port and a second communicating hole used for communicating the left annular groove and the right annular groove are formed in the machine body, and the second communicating hole is communicated with the T port; the inlet of the left one-way valve is communicated with the left end of the first communicating hole, and the inlet of the right one-way valve is communicated with the right end of the first communicating hole; a left communicating groove is formed in the side wall of the outer circumference of the left plunger, a left oil hole for communicating the second communicating hole with the left pump hole, a left second oil hole for communicating the left second control cavity with the left communicating groove, a left three oil hole for communicating the left first control cavity with the left pump hole and a left four oil hole for communicating an outlet of the left one-way valve with the left three oil hole are formed in the left end cover; the inlet of the left two-way valve is communicated with the left four oil holes; a right communicating groove is formed in the side wall of the outer circumference of the right plunger, and a right oil hole for communicating the second communicating hole with the right pump hole, a right two oil hole for communicating the right two control cavity with the right communicating groove, a right three oil hole for communicating the right one control cavity with the right pump hole, and a right four oil hole for communicating the outlet of the right one-way valve with the right three oil hole are formed in the right end cover; the inlet of the right two-way valve is communicated with the right four oil holes;
when the power piston is close to the right two convex columns, the right communicating groove is communicated with the right three oil holes, and the left communicating groove is communicated with the left oil hole; when the power piston is close to the left two convex columns, the right communicating groove is communicated with the right oil hole, and the left communicating groove is communicated with the left three oil holes.
In a further technical scheme, a left five oil hole for communicating a left piston cavity and a left two oil hole is formed in the left end cover, and the left damper is installed in the left five oil hole; and a right five oil hole used for communicating the right piston cavity with the right two oil holes is formed in the right end cover, and the right damper is installed in the right five oil hole.
In a further technical scheme, the left two ring grooves are communicated with the left piston cavity through left through holes arranged in the cylinder sleeve, and the right two ring grooves are communicated with the right piston cavity through right through holes arranged in the cylinder sleeve.
Advantageous effects
Compared with the prior art, the technical scheme of the invention has the following advantages:
(1) the displacement of the double-plunger supercharger is increased while the reversing of the power piston is realized by the left and right movement of the cylinder sleeve, so that the overall design is highly integrated, and the space and parts are saved;
(2) through mutual control between the cylinder sleeve and the power piston, the oil way is reduced, the control is simple, the output flow can be ensured to be stable, and the condition that the cylinder sleeve or the power piston stops outputting the flow due to instant reversing can be avoided;
(3) all oil paths control reversing without electric control, thereby avoiding unstable factors of electric appliances, being capable of working for a long time and having long service life.
Drawings
FIG. 1 is a cross-sectional view of the present invention;
fig. 2-4 are cross-sectional views of the present invention in various operating positions.
Detailed Description
Referring to fig. 1-4, a double-plunger supercharger comprises a body 1, wherein a mounting hole 101 penetrating left and right is formed in the body 1, and a P port and a T port communicated with the mounting hole 101 are formed in the side surface of the body 1; a left end cover 4 is fixedly arranged at the left side of the machine body 1 at the left end of the mounting hole 101, and a right end cover 5 is fixedly arranged at the right end of the mounting hole 101 at the right side of the machine body 1; the left end cover 4 comprises a left body 41 arranged on the machine body 1, the left body 41 is provided with a left convex column 42 extending into the installation hole 101, the right end of the left convex column 42 is axially extended along the installation hole 101 and provided with a left two convex columns 43, the right end cover 5 comprises a right body 51 arranged on the machine body 1, the right body 51 is provided with a right convex column 52 extending into the installation hole 101, the left end of the right convex column 52 is axially extended along the installation hole 101 and provided with a right two convex columns 53, and the left convex column 42, the left two convex columns 43, the right one convex column 52 and the right two convex columns 53 are all coaxially arranged with the installation hole 101; the cylinder sleeve 2 is connected between the left convex column 42 and the right convex column 52 in the mounting hole 101 in a sliding manner, the left two convex columns 43 extend into the left end of the cylinder sleeve 2, and the right two convex columns 53 extend into the right end of the cylinder sleeve 2; a power piston 3 is connected between the left second convex column 43 and the right second convex column 53 in the cylinder sleeve 2 in a sliding manner; a left piston cavity 2g is formed between the left end of the power piston 3 and the left two convex columns 43 in the cylinder sleeve 2, and a right piston cavity 2h is formed between the right end of the power piston 3 and the right two convex columns 53; a left pump assembly driven by the power piston 3 is arranged in the left end cover 4, and a right pump assembly driven by the power piston 3 is arranged in the right end cover 5; when the power piston 3 is close to the left two convex columns 43, the cylinder sleeve 2 moves rightwards, so that the port P is communicated with the left piston cavity 2g, the port T is communicated with the right piston cavity 2h, when the power piston 3 is close to the right two convex columns 53, the cylinder sleeve 2 moves leftwards, so that the port P is communicated with the right piston cavity 2h, and the port T is communicated with the left piston cavity 2 g.
The left pump assembly comprises a left liquid inlet one-way valve 8a and a left liquid outlet one-way valve 7c, a left pump hole 44 communicated with the left piston cavity 2g is formed in the left end cover 4, and a left plunger 3c extending into the left pump hole 44 is arranged at the left end of the power piston 3; a left pump cavity 4h is formed between the left end of the left pump hole 44 and the left end of the left plunger 3c in the left pump hole 44, and the left liquid inlet one-way valve 8a and the left liquid outlet one-way valve 7c are installed in the left end cover 4 and are communicated with the left pump cavity 4 h; the right pump assembly comprises a right liquid inlet one-way valve 8b and a right liquid outlet one-way valve 7d, a right pump hole 54 communicated with the right piston cavity 2h is formed in the right end cover 5, and a right plunger 3d extending into the right pump hole 54 is arranged at the right end of the power piston 3; and a right pump cavity 5h is formed between the right end of the right pump hole 54 in the right pump hole 54 and the right end of the right plunger 3d, and the right liquid inlet one-way valve 8b and the right liquid outlet one-way valve 7d are installed in the right end cover 5 and are communicated with the right pump cavity 5 h.
A left annular hole is formed between the inner side wall of the mounting hole 101 and the outer circumferential side surface of the left first convex column 42, a left convex sleeve 2a extending into the left annular hole is arranged at the left end of the cylinder sleeve 2, and a left second annular hole is formed between the inner side wall of the left convex sleeve 2a and the outer circumferential side surface of the left second convex column 43; a left first control cavity 1j is formed between the left end of the left convex sleeve 2a and the left end cover 4 in the left first annular hole, and a left second control cavity 2m is formed between the left end of the cylinder sleeve 2 and the right end of the left first convex column 42 in the left second annular hole; a first left check valve 9a is installed in the machine body 1, an inlet of the first left check valve 9a is communicated with the port P, an outlet of the first left check valve 9a is communicated with the first left control cavity 1j, and a second left check valve 7a is installed in the left end cover 4; the inlet of the left check valve 7a is communicated with the left control cavity 1j, the outlet is communicated with the drain pipe, and the opening pressure of the left check valve 7a is greater than that of the left check valve 9 a.
A right annular hole is formed between the inner side wall of the mounting hole 101 and the outer circumferential side surface of the right first convex column 52, a right convex sleeve 2b extending into the right annular hole is arranged at the right end of the cylinder sleeve 2, and a right second annular hole is formed between the inner side wall of the right convex sleeve 2b and the outer circumferential side surface of the right second convex column 53; a right control cavity 1k is formed between the right end of the right convex sleeve 2b and the right end cover 5 in the right annular hole, and a right control cavity 2n is formed between the right end of the cylinder sleeve 2 and the left end of the right convex column 52 in the right annular hole; a right one-way valve 9b is arranged in the machine body 1, an inlet of the right one-way valve 9b is communicated with the port P, an outlet of the right one-way valve 9b is communicated with the right control cavity 1k, and a right two-way valve 7b is arranged in the right end cover 5; the inlet of the right two one-way valves 7b is communicated with the right one-way control cavity 1k, the outlet of the right two-way valves 7b is communicated with a liquid discharge pipe, and the opening pressure of the right two-way valves 7b is greater than that of the right one-way valve 9 b;
when the power piston 3 is close to the left second convex column 43, the left first control cavity 1j is communicated with the left second control cavity 2m, and the right second control cavity 2n is communicated with the T port; when the power piston 3 is close to the right two convex columns 53, the right first control cavity 1k is communicated with the right two control cavities 2n, and the left two control cavities 2m are communicated with the T port;
a middle annular groove 1c communicated with the port P is formed in the middle of the inner side wall of the mounting hole 101, and a left annular groove 1d and a right annular groove 1e communicated with the port T are formed in the inner side wall of the mounting hole 101 on two sides of the middle annular groove 1 c; the side surface of the outer circumference of the cylinder sleeve 2 is provided with a left second ring groove 2e communicated with a left piston cavity 2g and a right second ring groove 2f communicated with a right piston cavity 2 h; here, the left second ring groove 2e communicates with the left piston chamber 2g through a left through hole 2i provided in the cylinder liner 2, and the right second ring groove 2f communicates with the right piston chamber 2h through a right through hole 2j provided in the cylinder liner 2. When the cylinder sleeve 2 is close to the left convex column 42, the middle annular groove 1c is communicated with the right annular groove 2f, the left second annular groove 2e is communicated with the left first annular groove 1d, when the cylinder sleeve 2 is close to the right convex column 52, the middle annular groove 1c is communicated with the left second annular groove 2e, and the right second annular groove 2f is communicated with the right first annular groove 1 e.
First communicating holes 1a and 1b communicated with the port P and second communicating holes 1f and 1g for communicating a left annular groove 1d and a right annular groove 1e are formed in the machine body 1, and the second communicating holes 1f and 1g are communicated with the port T; the inlet of the left one-way valve 9a is communicated with the left ends of the first communication holes 1a and 1b, and the inlet of the right one-way valve 9b is communicated with the right ends of the first communication holes 1a and 1 b; a left communicating groove 3a is formed in the outer circumferential side wall of the left plunger 3c, a left first oil hole 4k, 4j, 4m, 4n for communicating the second communicating hole 1f, 1g with the left pump hole 44, a left second oil hole 4b for communicating the left second control chamber 2m with the left communicating groove 3a, a left third oil hole 4c for communicating the left first control chamber 1j with the left pump hole 44, and a left four oil hole 4d, 4e, 4f for communicating the outlet of the left check valve 9a with the left third oil hole 4c are formed in the left end cover 4; the inlet of the left second one-way valve 7a is communicated with the left four oil holes 4 f; and a left five oil hole 4a used for communicating the left piston cavity 2g with the left two oil hole 4b is formed in the left end cover 4, and a left damper 6a is installed in the left five oil hole 4 a. A right communicating groove 3b is formed in the outer circumferential side wall of the right plunger 3d, a right first oil hole 5k, 5j, 5m, 5n for communicating the second communicating hole 1f, 1g with the right pump hole 54, a right second oil hole 5b for communicating the right second control chamber 2n with the right communicating groove 3b, a right third oil hole 5c for communicating the right first control chamber 1k with the right pump hole 54, and a right four oil hole 5d, 5e, 5f for communicating the outlet of the right one-way valve 9b with the right third oil hole 5c are formed in the right end cover 5; the inlet of the right two-way valve 7b is communicated with the right four oil holes 5 f; and a right five oil hole 5a used for communicating the right piston cavity 2h with the right two oil hole 5b is formed in the right end cover 5, and a right damper 6b is installed in the right five oil hole 5 a.
When the power piston 3 is close to the right two convex columns 53, the right communicating groove 3b is communicated with the right three oil holes 5c, and the left communicating groove 3a is communicated with the left one oil hole 4k, 4j, 4m and 4 n; when the power piston 3 approaches the left second convex column 43, the right communicating groove 3b is communicated with the right one oil hole 5k, 5j, 5m, 5n, and the left communicating groove 3a is communicated with the left three oil holes 4 c.
As shown in figure 1, the structure is simple, an oil inlet pipe is connected with a port P before working, a port T is connected with an oil outlet pipe, a left liquid inlet check valve 8a and a right liquid inlet check valve 8b are connected with a liquid inlet pipe, a left liquid outlet check valve 7c and a right liquid outlet check valve 7d are connected with a liquid outlet pipe, when a pipeline of the invention is connected, oil can be introduced into the port P to start working, the position of figure 1 is the initial position of the invention, after the hydraulic oil enters the port P, the hydraulic oil enters a left piston cavity 2g through a middle ring groove 1c, a left second ring groove 2e and a left through hole 2i, the hydraulic oil in a right piston cavity 2h passes through a right through hole 2j, a right two ring grooves 2f, a right one ring groove 1e and a second through hole 1f, the port T is discharged from the port 1g, the hydraulic oil pushes a power piston 3 to move rightwards, at the moment, the hydraulic oil in a right pump cavity 5h is internally compressed and discharged through the right, the volume of the left pump cavity 4h is increased, hydraulic oil enters the left pump cavity 4h through the left liquid inlet one-way valve 8a, and in the process that the power piston 3 moves rightwards, oil at the position of a P port enters the left control cavity 2m from the left piston cavity 2g through the left damper 6a, the left five oil hole 4a and the left two oil hole 4b, so that the cylinder sleeve 2 is kept at the right end and abuts against the left end of the right convex column.
When the power piston 3 moves to the rightmost end, as shown in fig. 2, hydraulic oil at the position P enters a right two-control chamber 2n through a first communicating hole 1b, a right one-way valve 9b, a right four- oil hole 5d, 5e, 5f, a right three-oil hole 5c, a right communicating groove 3b and a right two-oil hole 5b, and simultaneously enters a right one-control chamber 1k through a right three-oil hole 5c to push the cylinder sleeve to move leftwards, at the moment, the hydraulic oil in the left two-control chamber 2m is discharged from a T port through a left two-oil hole 4b, a left communicating groove 3a, a left one- oil hole 4k, 4j, 4m, 4n and a second communicating hole 1f, the oil in the left one-control chamber 1j is compressed and discharged from a supercharger through a left three-oil hole 4c, a left four-oil hole 4f and a left two-way valve 7a, because the whole annular area of the right end of the cylinder sleeve is subjected to hydraulic oil pressure, and only the annular, therefore, the hydraulic oil in the left control chamber 1j is pressurized out; when the cylinder sleeve 2 moves to the leftmost end (as shown in the position of figure 3), hydraulic oil enters the port P and then enters the right piston cavity 2h through the middle annular groove 1c, the right second annular groove 2f and the right through hole 2j, the oil in the left piston cavity 2g is discharged out of the T port through the left through hole 2i, the left second ring groove 2e, the left first ring groove 1d and the second communicating hole 1f, the oil pushes the power piston 3 to move leftwards, at the moment, the hydraulic oil in the left pump cavity 4h is compressed, the hydraulic oil is discharged through the left liquid outlet one-way valve 7c, the volume of the right pump cavity 5h is increased, the hydraulic oil enters the right pump cavity 5h through the right liquid inlet one-way valve 8b, in the process that the power piston 3 moves leftwards, oil at the position P enters the right second control cavity 2n from the right piston cavity 2h through the left damper 6b, the right five oil hole 5a and the right two oil hole 5b, so that the cylinder sleeve 2 is kept at the left end and is abutted against the right end of the left first convex column.
When the power piston 3 moves to the leftmost end (as shown in fig. 4), the hydraulic oil at the position of the P port enters the left second control chamber 2m through the first communicating hole 1a, the left one-way valve 9a, the left four oil holes 4d, 4e, 4f, the left three oil holes 4c, the left communicating groove 3a and the left two oil holes 4b, and simultaneously enters the left first control chamber 1j through the left three oil holes 4c, so as to push the cylinder liner to move rightwards, at this time, the hydraulic oil in the right second control chamber 2n passes through the right two oil holes 5b, the right communicating groove 3b, the right one oil holes 5k, 5j, 5m, 5n and the second communicating hole 1g to discharge out of the T port, the right first control chamber 1k is compressed and discharged out of the supercharger through the right three oil holes 5c, the right four oil holes 5f and the left two one-way valve 7b, because the whole annular area at the left end of the cylinder liner 2 is subjected to the hydraulic pressure, and only the annular area of the right one, the hydraulic oil in the right control chamber 1k is pressurized out; when the cylinder liner 2 moves rightwards to the rightmost end, the position is shown in figure 1, and circulation is formed; because the ratio of the annular area of the power piston 3 subjected to the hydraulic oil to the area of the left plunger subjected to the hydraulic oil is equal to the ratio of the annular cross-sectional area of the cylinder sleeve 2 to the annular cross-sectional area of the left convex sleeve, two groups of superchargers of the double-plunger supercharger can output constant pressure during work.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (6)
1. A double-plunger supercharger comprises a supercharger body and is characterized in that a mounting hole penetrating through the supercharger body from left to right is formed in the supercharger body, and a P port and a T port communicated with the mounting hole are formed in the side face of the supercharger body; a left end cover is fixedly arranged at the left side of the machine body at the left end of the mounting hole, and a right end cover is fixedly arranged at the right end of the mounting hole at the right side of the machine body; the left end cover comprises a left body arranged on the machine body, the left body is provided with a left convex column extending into the mounting hole, the right end of the left convex column extends axially along the mounting hole and is provided with a left two convex columns, the right end cover comprises a right body arranged on the machine body, the right body is provided with a right convex column extending into the mounting hole, the left end of the right convex column extends axially along the mounting hole and is provided with a right two convex columns, and the left convex column, the left two convex columns, the right one convex column and the right two convex columns are all arranged coaxially with the mounting hole; a cylinder sleeve is connected in the mounting hole between the left convex column and the right convex column in a sliding manner, the left two convex columns extend into the left end of the cylinder sleeve, and the right two convex columns extend into the right end of the cylinder sleeve; a power piston is connected between the left two convex columns and the right two convex columns in the cylinder sleeve in a sliding manner; a left piston cavity is formed between the left end of the power piston and the left two convex columns in the cylinder sleeve, and a right piston cavity is formed between the right end of the power piston and the right two convex columns; a left pump assembly driven by the power piston is arranged in the left end cover, and a right pump assembly driven by the power piston is arranged in the right end cover; when the power piston is close to the left two convex columns, the cylinder sleeve moves rightwards, so that the port P is communicated with the left piston cavity, the port T is communicated with the right piston cavity, when the power piston is close to the right two convex columns, the cylinder sleeve moves leftwards, so that the port P is communicated with the right piston cavity, and the port T is communicated with the left piston cavity.
2. The double-plunger supercharger of claim 1, wherein the left pump assembly comprises a left liquid inlet check valve and a left liquid outlet check valve, a left pump hole communicated with the left piston cavity is formed in the left end cover, and a left plunger extending into the left pump hole is formed at the left end of the power piston; a left pump cavity is formed between the left end of the left pump hole and the left end of the left plunger in the left pump hole, and the left liquid inlet one-way valve and the left liquid outlet one-way valve are arranged in the left end cover and are communicated with the left pump cavity;
the right pump assembly comprises a right liquid inlet one-way valve and a right liquid outlet one-way valve, a right pump hole communicated with the right piston cavity is formed in the right end cover, and a right plunger extending into the right pump hole is arranged at the right end of the power piston; and a right pump cavity is formed between the right end of the right pump hole and the right end of the right plunger in the right pump hole, and the right liquid inlet check valve and the right liquid outlet check valve are installed in the right end cover and are communicated with the right pump cavity.
3. The twin-ram supercharger of claim 2 wherein a left annular ring is formed between the inner side wall of the mounting hole and the outer circumferential side of the left primary boss, the left end of the cylinder liner is provided with a left boss extending into the left annular ring, and a left secondary ring is formed between the inner side wall of the left boss and the outer circumferential side of the left secondary boss; a left control cavity is formed between the left end of the left convex sleeve and the left end cover in the left first annular hole, and a left second control cavity is formed between the left end of the cylinder sleeve and the right end of the left convex column in the left second annular hole; the left piston cavity is communicated with the left second control cavity through a left damper; a left one-way valve is arranged in the machine body, an inlet of the left one-way valve is communicated with the P port, an outlet of the left one-way valve is communicated with the left control cavity, and a left two-way valve is arranged in the left end cover; the inlet of the left one-way valve is communicated with the left control cavity, the outlet of the left one-way valve is communicated with the liquid discharge pipe, and the opening pressure of the left one-way valve is greater than that of the left one-way valve;
a right annular hole is formed between the inner side wall of the mounting hole and the outer circumferential side surface of the right first convex column, a right convex sleeve extending into the right annular hole is arranged at the right end of the cylinder sleeve, and a right annular hole is formed between the inner side wall of the right convex sleeve and the outer circumferential side surface of the right second convex column; a right control cavity is formed between the right end of the right convex sleeve and the right end cover in the right annular hole, and a right control cavity is formed between the right end of the cylinder sleeve and the left end of the right convex column in the right annular hole; the right piston cavity is communicated with the right two control cavities through a right damper; a right one-way valve is arranged in the machine body, an inlet of the right one-way valve is communicated with the P port, an outlet of the right one-way valve is communicated with the right control cavity, and a right two-way valve is arranged in the right end cover; the inlet of the right two one-way valves is communicated with the right one-way control cavity, the outlet of the right two one-way valves is communicated with the liquid discharge pipe, and the opening pressure of the right two one-way valves is greater than that of the right one-way valve;
when the power piston is close to the left two convex columns, the left first control cavity is communicated with the left two control cavities, and the right two control cavities are communicated with the T port; when the power piston is close to the right two convex columns, the right control cavity is communicated with the right two control cavities, and the left two control cavities are communicated with the T port;
a middle ring groove communicated with the P port is formed in the middle of the inner side wall of the mounting hole, and a left ring groove and a right ring groove communicated with the T port are formed in the inner side wall of the mounting hole on two sides of the middle ring groove; the side surface of the outer circumference of the cylinder sleeve is provided with a left second ring groove communicated with the left piston cavity and a right second ring groove communicated with the right piston cavity; when the cylinder sleeve is close to the left convex column, the middle annular groove is communicated with the right annular groove, the left second annular groove is communicated with the left first annular groove, when the cylinder sleeve is close to the right convex column, the middle annular groove is communicated with the left second annular groove, and the right second annular groove is communicated with the right first annular groove.
4. The twin-plunger pressure booster according to claim 3, wherein a first communication hole communicating with the P port and a second communication hole for communicating the left ring groove and the right ring groove are provided in the machine body, the second communication hole communicating with the T port; the inlet of the left one-way valve is communicated with the left end of the first communicating hole, and the inlet of the right one-way valve is communicated with the right end of the first communicating hole; a left communicating groove is formed in the side wall of the outer circumference of the left plunger, a left oil hole for communicating the second communicating hole with the left pump hole, a left second oil hole for communicating the left second control cavity with the left communicating groove, a left third oil hole for communicating the left first control cavity with the left pump hole, and a left four oil hole for communicating an outlet of the left one-way valve with the left third oil hole are formed in the left end cover; the inlet of the left two-way valve is communicated with the left four oil holes; a right communicating groove is formed in the side wall of the outer circumference of the right plunger, and a right oil hole for communicating the second communicating hole with the right pump hole, a right two oil hole for communicating the right two control cavity with the right communicating groove, a right three oil hole for communicating the right one control cavity with the right pump hole, and a right four oil hole for communicating the outlet of the right one-way valve with the right three oil hole are formed in the right end cover; the inlet of the right two-way valve is communicated with the right four oil holes;
when the power piston is close to the right two convex columns, the right communicating groove is communicated with the right three oil holes, and the left communicating groove is communicated with the left oil hole; when the power piston is close to the left two convex columns, the right communicating groove is communicated with the right oil hole, and the left communicating groove is communicated with the left three oil holes.
5. The double-plunger pressure booster as claimed in claim 4, wherein a left five oil hole for communicating the left piston cavity and the left two oil hole is formed in the left end cover, and the left damper is installed in the left five oil hole; and a right five oil hole used for communicating the right piston cavity with the right two oil holes is formed in the right end cover, and the right damper is installed in the right five oil hole.
6. The dual plunger pressure booster of claim 3 wherein the left two ring slots communicate with the left piston cavity through left through holes disposed in the cylinder liner and the right two ring slots communicate with the right piston cavity through right through holes disposed in the cylinder liner.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010109529.2A CN111120427B (en) | 2020-02-22 | 2020-02-22 | Double-plunger supercharger |
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| CN202010109529.2A CN111120427B (en) | 2020-02-22 | 2020-02-22 | Double-plunger supercharger |
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| CN111120427B CN111120427B (en) | 2021-07-06 |
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| US3945206A (en) * | 1973-11-22 | 1976-03-23 | Ruthner Industrieanlagen-Aktiengesellschaft | Control system for hydraulic presses comprising a plurality of press rams |
| US3856152A (en) * | 1973-12-03 | 1974-12-24 | Koehring Co | Outrigger hydraulic system |
| JPS5325975A (en) * | 1976-06-09 | 1978-03-10 | Transform Verstaerkungsmasch | Method of and device for controlling press plunger system |
| CN2041738U (en) * | 1988-06-17 | 1989-07-26 | 南昌市自来水公司水表厂 | Liquid pressure boost and adjusting device |
| CN1116689A (en) * | 1995-05-19 | 1996-02-14 | 梁剑锐 | Hydraulic booster and speed-increasing short time fuel injection piston pump |
| CN2270839Y (en) * | 1996-07-30 | 1997-12-17 | 吴平 | Pressure device with self-supercharging ring |
| CN2346977Y (en) * | 1997-05-23 | 1999-11-03 | 顾新华 | Ultrahigh pressure hydraulic dual-action continuous automatic supercharger |
| CN2406238Y (en) * | 1999-06-26 | 2000-11-15 | 李宏达 | Superhigh-pressure test detection station |
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| CN2856533Y (en) * | 2005-08-14 | 2007-01-10 | 吴平 | Booster of steam reclaiming machine |
| CN2849214Y (en) * | 2006-01-12 | 2006-12-20 | 史占彪 | Booster pump |
| CN203371020U (en) * | 2013-04-22 | 2014-01-01 | 深圳领威科技有限公司 | A die-casting machine boosting push rod cylinder device |
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|---|---|
| CN111120427B (en) | 2021-07-06 |
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Effective date of registration: 20231204 Address after: 315000 88 Zhongyi Road, Zhenhai District, Ningbo City, Zhejiang Province Patentee after: NINGBO ZHONGYI HYDRAULIC MOTOR Co.,Ltd. Address before: Room 1493, 1st floor, building 041, block B, 188 Jinghua Road, high tech Zone, Ningbo, Zhejiang 315000 Patentee before: NINGBO ZHENGE HYDRAULIC TECHNOLOGY Co.,Ltd. |