CN111287936B - Four-plunger air compressor - Google Patents
Four-plunger air compressor Download PDFInfo
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- CN111287936B CN111287936B CN202010109737.2A CN202010109737A CN111287936B CN 111287936 B CN111287936 B CN 111287936B CN 202010109737 A CN202010109737 A CN 202010109737A CN 111287936 B CN111287936 B CN 111287936B
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- end cover
- pump
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- 238000013016 damping Methods 0.000 claims description 47
- 238000004891 communication Methods 0.000 claims description 35
- 230000010349 pulsation Effects 0.000 abstract description 6
- 238000013461 design Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 51
- 239000010720 hydraulic oil Substances 0.000 description 20
- 238000013459 approach Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/008—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being a fluid transmission link
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0005—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/10—Adaptations or arrangements of distribution members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/121—Casings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/122—Cylinder block
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/126—Cylinder liners
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
The invention discloses a four-plunger air compressor, which comprises a machine body, wherein an upper piston hole and a lower piston hole are arranged in the machine 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; an upper piston body is arranged in the upper piston hole, and a lower piston body is arranged in the lower piston hole; the left side of the left end cover is provided with an upper left pump assembly and a lower left pump assembly; the right side of the right end cover is provided with an upper right pump assembly and a lower right pump assembly; the side surface of the machine body is provided with a P port and a T port; an upper control assembly is arranged in the upper piston hole, and a lower control assembly is arranged in the lower piston hole; the four-plunger air compressor is highly integrated in overall design, saves space and parts, has no pause in pressure output, does not generate pulsation, and does not need electric control.
Description
Technical Field
The invention belongs to the technical field of air compressors, and particularly relates to a four-plunger air compressor.
Background
The reciprocating air compressor used in the current market is mainly a double-plunger reciprocating air compressor. Although the double-plunger reciprocating air compressor can realize continuous output of pressure, the instantaneous output pressure of reversing is zero, so that the output gas pressure generates pulsation, and the double-plunger reciprocating air compressor cannot be used in certain occasions, for example, a hydraulically driven reciprocating air compressor with the application number of 201810479411.1, which is required to stop after the piston moves in place and wait for the external reversing valve to reversely move after reversing, so that the output pressure generates pulsation, and the external reversing valve has larger volume, contains a plurality of valves and has high cost; the external reversing valve has complex oil path, complex control and complex structure, and is not only difficult to check problems but also inconvenient to maintain when faults occur.
Disclosure of Invention
The invention aims to provide a four-plunger air compressor which is highly integrated in overall design, saves space and parts, has no pause in pressure output, does not generate pulsation and does not need electric control.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the four-plunger air compressor comprises a machine body, wherein an upper piston hole and a lower piston hole which penetrate left and right are arranged in the machine body, a left end cover is fixedly arranged at the left ends of the upper piston hole and the lower piston hole on the left side of the machine body, and a right end cover is fixedly arranged at the right ends of the upper piston hole and the lower piston hole on the right side of the machine body; an upper piston body is arranged in the upper piston hole, and a lower piston body is arranged in the lower piston hole; the left side of the left end cover is provided with an upper left pump component connected with the left end of the upper piston body and a lower left pump component connected with the left end of the lower piston body; the right side of the right end cover is provided with an upper right pump component connected with the right end of the upper piston body and a lower right pump component connected with the right end of the lower piston body; the side surface of the machine body is provided with a P port and a T port which are communicated with the upper piston hole and the lower piston hole; an upper control assembly for controlling the upper piston body to move left and right in the upper piston hole is arranged in the upper piston hole, and a lower control assembly for controlling the lower piston body to move left and right in the lower piston hole is arranged in the lower piston hole; when the upper piston body moves rightwards to be close to the right end cover, the lower control assembly controls the lower piston body to move leftwards, and when the upper piston body moves leftwards to be close to the left end cover, the lower control assembly controls the lower piston body to move rightwards; when the lower piston body moves rightwards to be close to the right end cover, the upper control assembly controls the upper piston body to move rightwards, and when the lower piston body moves leftwards to be close to the left end cover, the upper control assembly controls the upper piston body to move leftwards.
In a further technical scheme, a left pump body is fixedly arranged on the left side of the left end cover, and a right pump body is fixedly arranged on the right side of the right end cover; the left upper pump assembly comprises a left upper piston, a left upper pump hole coaxial with the upper piston hole is arranged in the left pump body, a left upper sliding hole used for communicating the left upper pump hole and the upper piston hole is arranged in the left end cover, and the left upper sliding hole and the upper piston hole are coaxially arranged; the left end of the upper piston body is provided with a left upper connecting rod which penetrates through the left upper sliding hole and stretches into the left upper pump hole; the left upper piston is connected in the left upper pump hole in a sliding way and is fixedly connected with the left end of the left upper connecting rod; an upper left rodless cavity is formed in the upper left pump hole between the upper left piston and the left end of the upper left pump hole, and the left end of the left pump body is provided with an upper left air inlet one-way valve and an upper left air outlet one-way valve which are communicated with the upper left rodless cavity;
the left lower pump assembly comprises a left lower piston, a left lower pump hole coaxial with the lower piston hole is arranged in the left pump body, a left lower sliding hole used for communicating the left lower pump hole and the lower piston hole is arranged in the left end cover, and the left lower sliding hole and the lower piston hole are coaxially arranged; the left end of the lower piston body is provided with a left lower connecting rod which penetrates through the left lower sliding hole and stretches into the left lower pump hole; the left lower piston is connected in the left lower pump hole in a sliding way and is fixedly connected with the left end of the left lower connecting rod; a left lower rodless cavity is formed in the left lower pump hole between the left lower piston and the left end of the left lower pump hole, and a left lower air inlet one-way valve and a left lower air outlet one-way valve which are communicated with the left lower rodless cavity are arranged at the left end of the left pump body;
the right upper pump assembly comprises a right upper piston, a right upper pump hole coaxial with the upper piston hole is arranged in the right pump body, a right upper sliding hole used for communicating the right upper pump hole and the upper piston hole is arranged in the right end cover, and the right upper sliding hole and the upper piston hole are coaxially arranged; the right end of the upper piston body is provided with an upper right connecting rod which penetrates through the upper right sliding hole and stretches into the upper right pump hole; the right upper piston is connected in the right upper pump hole in a sliding way and is fixedly connected with the right end of the right upper connecting rod; an upper right rodless cavity is formed in the upper right pump hole between the upper right piston and the right end of the upper right pump hole, and the right end of the right pump body is provided with an upper right air inlet one-way valve and an upper right air outlet one-way valve which are communicated with the upper right rodless cavity;
the right lower pump assembly comprises a right lower piston, a right lower pump hole coaxial with the lower piston hole is arranged in the right pump body, a right lower sliding hole for communicating the right lower pump hole and the lower piston hole is arranged in the right end cover, and the right lower sliding hole and the lower piston hole are coaxially arranged; the right end of the lower piston body is provided with a right lower connecting rod which penetrates through the right lower sliding hole and stretches into the right lower pump hole; the right lower piston is connected in the right lower pump hole in a sliding way and is fixedly connected with the right end of the right lower connecting rod; the right lower pump hole is internally provided with a right lower air inlet one-way valve and a right lower air outlet one-way valve which are communicated with the right lower rodless cavity.
In a further technical scheme, the upper control assembly comprises an upper cylinder sleeve, the upper cylinder sleeve is connected in the upper piston hole in a sliding manner, the upper piston body is connected in the upper cylinder sleeve in a sliding manner, the left end cover is provided with an upper left protruding column extending into the upper cylinder sleeve, and the right end cover is internally provided with an upper right protruding column extending into the upper cylinder sleeve; an upper left piston cavity is formed between the upper left convex column and the upper piston body in the upper cylinder sleeve, and an upper right piston cavity is formed between the upper right convex column and the upper piston body; an upper left control cavity is formed between the left end of the upper cylinder sleeve and the left end cover in the upper piston hole, and an upper right control cavity is formed between the right end of the upper cylinder sleeve and the right end cover;
the lower control assembly comprises a lower cylinder sleeve, the lower cylinder sleeve is connected in a lower piston hole in a sliding manner, the lower piston body is connected in the lower cylinder sleeve in a sliding manner, the left end cover is provided with a left lower convex column extending into the lower cylinder sleeve, and the right end cover is internally provided with a right lower convex column extending into the lower cylinder sleeve; a left lower piston cavity is formed between the left lower convex column and the lower piston body in the lower cylinder sleeve, and a right lower piston cavity is formed between the right lower convex column and the lower piston body; a left lower control cavity is formed between the left end of the lower cylinder sleeve and the left end cover in the lower piston hole, and a right lower control cavity is formed between the right end of the lower cylinder sleeve and the right end cover;
an upper middle ring groove communicated with the P port is formed in the inner side wall of the middle part of the upper piston hole, a lower middle ring groove is formed in the inner side wall of the middle part of the lower piston hole, and a first middle hole used for communicating the upper middle ring groove with the lower middle ring groove is formed in the machine body; the inner side wall of the upper piston hole is symmetrically provided with an upper left annular groove and an upper right annular groove which are communicated with the T-shaped opening at the left side and the right side of the upper middle annular groove, and the inner side wall of the lower piston hole is symmetrically provided with a lower left annular groove and a lower right annular groove which are communicated with the T-shaped opening at the left side and the right side of the lower middle annular groove; the outer circumferential side wall of the upper cylinder sleeve is provided with a left annular groove communicated with the inner hole of the upper cylinder sleeve at the position close to the left end cover, and a right annular groove communicated with the inner hole of the upper cylinder sleeve at the position close to the right end cover; when the left end of the upper cylinder sleeve is close to the left end cover, the left first annular groove is communicated with the left upper annular groove, the upper middle annular groove is communicated with the right first annular groove, and when the right end of the upper cylinder sleeve is close to the right end cover, the right first annular groove is communicated with the right upper annular groove, and the upper middle annular groove is communicated with the left first annular groove; the outer circumferential side wall of the lower cylinder sleeve is provided with a left two-ring groove communicated with the inner hole of the lower cylinder sleeve near the left end cover, and a right two-ring groove communicated with the inner hole of the lower cylinder sleeve near the right end cover; when the left end of the lower cylinder sleeve is close to the left end cover, the left two ring grooves are communicated with the left lower ring groove, the lower middle ring groove is communicated with the right two ring grooves, and when the right end of the lower cylinder sleeve is close to the right end cover, the right two ring grooves are communicated with the right lower ring groove, and the lower middle ring groove is communicated with the left two ring grooves;
a left damping hole is arranged between the left upper piston cavity and the left lower control cavity, and a right damping hole is arranged between the right upper piston cavity and the right lower control cavity; a left damping hole is formed between the left lower piston cavity and the right upper control cavity, and a right damping hole is formed between the right lower piston cavity and the left upper control cavity;
when the upper piston body is close to the upper left convex column, the P port is communicated with the lower left control cavity, the lower right control cavity is communicated with the T port, and when the upper piston body is close to the upper right convex column, the P port is communicated with the lower right control cavity, and the lower left control cavity is communicated with the T port; when the lower piston body is close to the lower right convex column, the P port is communicated with the upper left control cavity, the upper right control cavity is communicated with the T port, and when the lower piston body is close to the lower left convex column, the P port is communicated with the upper right control cavity, and the upper left control cavity is communicated with the T port.
In a further technical scheme, an upper communication hole used for communicating the upper left annular groove with the upper right annular groove 1e and a lower communication hole used for communicating the lower left annular groove with the lower right annular groove are arranged in the machine body, the upper communication hole is communicated with the T-shaped opening, and a second middle hole used for communicating the upper communication hole with the lower communication hole is arranged in the machine body; the engine body is internally provided with a lower oil hole communicated with the lower middle ring groove.
In a further technical scheme, the outer circumferential side wall of the left upper connecting rod is provided with a left three-ring groove, a left first through hole used for communicating the left upper sliding hole with the P port and a left second through hole used for communicating the left upper sliding hole with the upper communication hole are arranged in the machine body and the left end cover, and a left three through hole used for communicating the left three-ring groove with the left lower control cavity is arranged in the left end cover; the outer circumferential side wall of the right upper connecting rod is provided with a right three-ring groove, a right first through hole used for communicating the right upper sliding hole with the P port and a right second through hole used for communicating the right upper sliding hole with the upper communication hole are arranged in the machine body and the right end cover, and a right three through hole used for communicating the right three-ring groove with the right lower control cavity is arranged in the right end cover; when the upper piston body moves leftwards to be close to the left upper convex column, the left three ring grooves are communicated with the left through hole, and the right three ring grooves are communicated with the right through hole; when the upper piston body moves rightwards to be close to the right upper convex column, the left three ring grooves are communicated with the left through holes, and the right three ring grooves are communicated with the right through holes;
the left end cover is internally provided with a left five through hole used for communicating the left lower sliding hole with the lower oil hole and a left six through hole used for communicating the left four ring groove with the left upper control cavity; the outer circumferential side wall of the right lower connecting rod is provided with a right four-ring groove, a right four through hole used for communicating the right lower sliding hole with the lower communication hole is arranged in the machine body and the right end cover, and a right five through hole used for communicating the right lower sliding hole with the lower oil hole and a right six through hole used for communicating the right four-ring groove with the right upper control cavity are arranged in the right end cover; when the lower piston body moves leftwards to be close to the left lower convex column, the left four ring groove is communicated with the left four-way hole, and the right four ring groove is communicated with the right five through holes; when the lower piston body moves rightwards to be close to the right lower convex column, the left four annular groove is communicated with the left five through holes, and the right four annular groove is communicated with the right four through holes.
In a further technical scheme, the left damping hole is arranged in the left end cover, one end of the left damping hole is communicated with the left upper piston cavity, and the other end of the left damping hole is communicated with the left three-way hole; the right damping hole is arranged in the right end cover, one end of the right damping hole is communicated with the right upper piston cavity, and the other end of the right damping hole is communicated with the right three-way hole;
the left two damping holes are arranged in the lower piston body and are communicated with the left lower piston cavity, and right oil holes for communicating the left two damping holes with the right four ring grooves are formed in the lower piston body and the right lower connecting rod; the right two damping holes are arranged in the lower piston body and are communicated with the right lower piston cavity, and left oil holes used for communicating the right two damping holes and the left four ring grooves are formed in the lower piston body and the left lower connecting rod.
In a further technical scheme, the left annular groove is communicated with the inner hole of the upper cylinder sleeve through a left oil hole arranged in the upper cylinder sleeve, and the right annular groove is communicated with the inner hole of the upper cylinder sleeve through a right oil hole arranged in the upper cylinder sleeve; the left two ring grooves are communicated with the inner hole of the lower cylinder sleeve through left two oil holes arranged in the lower cylinder sleeve, and the right two ring grooves are communicated with the inner hole of the lower cylinder sleeve through right two oil holes arranged in the lower cylinder sleeve.
Advantageous effects
Compared with the prior art, the technical scheme of the invention has the following advantages:
(1) The oil way reversing is changed by using the cooperation of the upper piston body and the upper cylinder sleeve and the cooperation of the lower piston body and the lower cylinder sleeve, and an independent reversing valve is not required to be configured, so that the whole design is highly integrated, and the space and parts are saved;
(2) Through the mutual matching between the upper piston body and the lower piston body, when one piston body is about to stop, the other piston body moves immediately, the pressure output is not stopped, and the pulsation is not generated;
(3) All oil ways are controlled to change direction without electric control, so that unstable factors of electric appliances are avoided, and the electric appliance can work for a long time and has long service life.
Drawings
FIG. 1 is a cross-sectional view of the present invention;
FIG. 2 is a cross-sectional view taken along the direction A-A in FIG. 1;
FIG. 3 is a sectional view taken in the direction B-B in FIG. 1;
fig. 4-10 are cross-sectional views of the invention in various operative positions.
Detailed Description
Referring to fig. 1-10, a four-plunger air compressor includes a machine body 1, wherein an upper piston hole 101 and a lower piston hole 102 penetrating from left to right are provided in the machine body 1, a left end cover 6 is fixedly mounted at the left ends of the upper piston hole 101 and the lower piston hole 102 at the left side of the machine body 1, and a right end cover 7 is fixedly mounted at the right ends of the upper piston hole 101 and the lower piston hole 102 at the right side of the machine body; an upper piston body 4 is arranged in the upper piston hole 101, and a lower piston body 5 is arranged in the lower piston hole 102; the left side of the left end cover 6 is provided with an upper left pump component connected with the left end of the upper piston body 4 and a lower left pump component connected with the left end of the lower piston body 5; the right side of right end cover 7 is equipped with the upper right pump subassembly that is used for last piston body 4 right-hand member to be connected, and the lower right pump subassembly that is connected with lower piston body 5 right-hand member.
The side surface of the machine body 1 is provided with a P port and a T port which are communicated with an upper piston hole 101 and a lower piston hole 102; an upper control assembly for controlling the upper piston body 4 to move left and right in the upper piston hole 101 is arranged in the upper piston hole 101, and a lower control assembly for controlling the lower piston body 5 to move left and right in the lower piston hole 102 is arranged in the lower piston hole 102; when the upper piston body 4 moves rightwards to be close to the right end cover 7, the lower control assembly controls the lower piston body 5 to move leftwards, and when the upper piston body 4 moves leftwards to be close to the left end cover 6, the lower control assembly controls the lower piston body 5 to move rightwards; the upper control assembly controls the upper piston body 4 to move rightward when the lower piston body 5 moves rightward near the right cap 7, and controls the upper piston body 4 to move leftward when the lower piston body 5 moves leftward near the left cap 6.
The left side of the left end cover 6 is fixedly provided with a left pump body 12, and the right side of the right end cover 7 is fixedly provided with a right pump body 13; the upper left pump assembly comprises an upper left piston 8a, an upper left pump hole 121 coaxial with the upper piston hole 101 is arranged in the left pump body 12, an upper left sliding hole 61 used for communicating the upper left pump hole 121 and the upper piston hole 101 is arranged in the left end cover 6, and the upper left sliding hole 61 and the upper piston hole 101 are coaxially arranged; the left end of the upper piston body 4 is provided with a left upper connecting rod 41 which penetrates through the left upper sliding hole 61 and stretches into the left upper pump hole 121; the left upper piston 8a is slidably connected in the left upper pump hole 121 and fixedly connected with the left end of the left upper connecting rod 41; an upper left rodless cavity 12a is formed between the upper left piston 8a and the left end of the upper left pump hole 121 in the upper left pump hole 121, and the left end of the left pump body 12 is provided with an upper left air inlet check valve 9a and an upper left air outlet check valve 10a which are communicated with the upper left rodless cavity 12 a.
The left lower pump assembly comprises a left lower piston 8c, a left lower pump hole 122 coaxial with the lower piston hole 102 is arranged in the left pump body 12, a left lower sliding hole 62 used for communicating the left lower pump hole 122 and the lower piston hole 102 is arranged in the left end cover 6, and the left lower sliding hole 62 and the lower piston hole 102 are coaxially arranged; the left end of the lower piston body 5 is provided with a left lower connecting rod 51 which penetrates through the left lower sliding hole 62 and stretches into the left lower pump hole 122; the left lower piston 8c is slidably connected in the left lower pump hole 122 and fixedly connected with the left end of the left lower connecting rod 51; a lower left rodless cavity 12b is formed between the lower left piston 8c and the left end of the lower left pump hole 122 in the lower left pump hole 122, and a lower left air inlet check valve 9c and a lower left air outlet check valve 10c which are communicated with the lower left rodless cavity 12b are arranged at the left end of the left pump body 12.
The right upper pump assembly comprises a right upper piston 8b, a right upper pump hole 131 coaxial with the upper piston hole 101 is arranged in the right pump body 13, a right upper sliding hole 71 used for communicating the right upper pump hole 131 and the upper piston hole 101 is arranged in the right end cover 7, and the right upper sliding hole 71 and the upper piston hole 101 are coaxially arranged; the right end of the upper piston body 4 is provided with an upper right connecting rod 42 which penetrates through the upper right sliding hole 71 and stretches into the upper right pump hole 131; the right upper piston 8b is slidably connected in the right upper pump hole 131 and fixedly connected with the right end of the right upper connecting rod 42; an upper right rodless cavity 13a is formed between the upper right piston 8b and the right end of the upper right pump hole 131 in the upper right pump hole 131, and the right end of the right pump body 13 is provided with an upper right air inlet check valve 9b and an upper right air outlet check valve 10b which are communicated with the upper right rodless cavity 13 a.
The right lower pump assembly comprises a right lower piston 8d, a right lower pump hole 132 coaxial with the lower piston hole 102 is arranged in the right pump body 13, a right lower slide hole 72 for communicating the right lower pump hole 132 and the lower piston hole 102 is arranged in the right end cover 7, and the right lower slide hole 72 and the lower piston hole 102 are coaxially arranged; the right end of the lower piston body 5 is provided with a right lower connecting rod 52 which passes through the right lower sliding hole 72 and stretches into the right lower pump hole 132; the right lower piston 8d is slidably connected in the right lower pump hole 132 and fixedly connected with the right end of the right lower connecting rod 52; a right lower rodless cavity 13b is formed between the right lower piston 8d and the right end of the right lower pump hole 132 in the right lower pump hole 132, and a right lower air inlet check valve 9d and a right lower air outlet check valve 10d which are communicated with the right lower rodless cavity 13b are arranged at the right end of the right pump body 13.
The upper control assembly comprises an upper cylinder sleeve 2, the upper cylinder sleeve 2 is slidably connected in an upper piston hole 101, the upper piston body 4 is slidably connected in the upper cylinder sleeve 2, the left end cover 6 is provided with a left upper convex column 63 extending into the upper cylinder sleeve 2, and the right end cover 7 is internally provided with a right upper convex column 73 extending into the upper cylinder sleeve 2; an upper left piston cavity 2e is formed between the upper left convex column 63 and the upper piston body 4 in the upper cylinder sleeve 2, and an upper right piston cavity 2f is formed between the upper right convex column 73 and the upper piston body 4; the upper piston bore 101 forms an upper left control chamber 1f between the left end of the upper cylinder liner 2 and the left end cap 6, and an upper right control chamber 1g between the right end of the upper cylinder liner 2 and the right end cap 7.
The lower control assembly comprises a lower cylinder sleeve 3, the lower cylinder sleeve 3 is slidably connected in a lower piston hole 102, the lower piston body 5 is slidably connected in the lower cylinder sleeve 3, the left end cover 6 is provided with a left lower convex column 64 extending into the lower cylinder sleeve 3, and the right end cover 7 is internally provided with a right lower convex column 74 extending into the lower cylinder sleeve 3; a left lower piston cavity 3e is formed between the left lower convex column 64 and the lower piston body 5 in the lower cylinder sleeve 3, and a right lower piston cavity 3f is formed between the right lower convex column 74 and the lower piston body 5; the lower piston bore 102 forms a lower left control chamber 1j between the left end of the lower cylinder liner 3 and the left end cap 6, and a lower right control chamber 1k between the right end of the lower cylinder liner 3 and the right end cap 7.
An upper middle ring groove 1c communicated with the P port is formed in the inner side wall in the middle of the upper piston hole 101, a lower middle ring groove 1o is formed in the inner side wall in the middle of the lower piston hole 102, and a first middle hole 1h used for communicating the upper middle ring groove 1c with the lower middle ring groove 1o is formed in the machine body 1; the inner side wall of the upper piston hole 101 is symmetrically provided with an upper left annular groove 1d and an upper right annular groove 1e which are communicated with the T port at the left side and the right side of the upper middle annular groove 1c, and the inner side wall of the lower piston hole 102 is symmetrically provided with a lower left annular groove 1p and a lower right annular groove 1q which are communicated with the T port at the left side and the right side of the lower middle annular groove 1 o; the outer circumferential side wall of the upper cylinder sleeve 2 is provided with a left annular groove 2a communicated with the inner hole of the upper cylinder sleeve 2 near the left end cover 6, and a right annular groove 2b communicated with the inner hole of the upper cylinder sleeve 2 near the right end cover 7; wherein, the left ring groove 2a is communicated with the inner hole of the upper cylinder sleeve 2 through a left oil hole 2c arranged in the upper cylinder sleeve 2, and the right ring groove 2b is communicated with the inner hole of the upper cylinder sleeve 2 through a right oil hole 2d arranged in the upper cylinder sleeve 2. When the left end of the upper cylinder sleeve 2 is close to the left end cover 6, the left first annular groove 2a is communicated with the left upper annular groove 1d, the upper middle annular groove 1c is communicated with the right first annular groove 2b, and when the right end of the upper cylinder sleeve 2 is close to the right end cover 7, the right first annular groove 2b is communicated with the right upper annular groove 1e, and the upper middle annular groove 1c is communicated with the left first annular groove 2 a.
The outer circumferential side wall of the lower cylinder sleeve 3 is provided with a left two-ring groove 3a communicated with the inner hole of the lower cylinder sleeve 3 near the left end cover 6, and a right two-ring groove 3b communicated with the inner hole of the lower cylinder sleeve 3 near the right end cover 7; wherein, the left two ring grooves 3a are communicated with the inner hole of the lower cylinder sleeve 3 through the left two oil holes 3c arranged in the lower cylinder sleeve 3, and the right two ring grooves 3b are communicated with the inner hole of the lower cylinder sleeve 3 through the right two oil holes 3d arranged in the lower cylinder sleeve 3. When the left end of the lower cylinder sleeve 3 is close to the left end cover 6, the left second annular groove 3a is communicated with the left lower annular groove 1p, the lower middle annular groove 1o is communicated with the right second annular groove 3b, and when the right end of the lower cylinder sleeve 3 is close to the right end cover 7, the right second annular groove 3b is communicated with the right lower annular groove 1q, and the lower middle annular groove 1o is communicated with the left second annular groove 3 a.
In addition, when the upper piston body 4 approaches the upper left boss 63, the P port communicates with the lower left control chamber 1j, the lower right control chamber 1k communicates with the T port, and when the upper piston body 4 approaches the upper right boss 73, the P port communicates with the lower right control chamber 1k, and the lower left control chamber 1j communicates with the T port; when the lower piston body 5 approaches the lower right boss 74, the P port communicates with the upper left control chamber 1f, the upper right control chamber 1g communicates with the T port, and when the lower piston body 5 approaches the lower left boss 64, the P port communicates with the upper right control chamber 1g, the upper left control chamber 1f communicates with the T port.
An upper communication hole 1s for communicating the upper left annular groove 1d with the upper right annular groove 1e and a lower communication hole 1v for communicating the lower left annular groove 1p with the lower right annular groove 1q are arranged in the machine body 1, the upper communication hole 1s is communicated with the T port, and a second middle hole 1r for communicating the upper communication hole 1s with the lower communication hole 1v is arranged in the machine body 1; the engine body 1 is internally provided with lower oil holes 1m and 1n communicated with a lower middle ring groove 1 o.
The outer circumferential side wall of the left upper connecting rod 41 is provided with a left triple ring groove 4a, left through holes 1a,6a and 6b for communicating the left upper sliding hole 61 and the P port and left through holes 1t,6n,6m,6k and 6j for communicating the left upper sliding hole 61 and the upper communication hole 1s are arranged in the machine body 1 and the left end cover 6, and left three-way holes 6c and 6d for communicating the left triple ring groove 4a and the left lower control cavity 1j are arranged in the left end cover 6; the outer circumferential side wall of the right upper connecting rod 42 is provided with a right triple ring groove 4b, right through holes 1b,7a and 7b for communicating the right upper sliding hole 71 and the P port and right through holes 1u,7n,7m,7k and 7j for communicating the right upper sliding hole 71 and the upper communication hole 1s are arranged in the machine body 1 and the right end cover 7, and right three-way holes 7c and 7d for communicating the right triple ring groove 4b and the right lower control cavity 1k are arranged in the right end cover 7; when the upper piston body 4 moves leftwards to approach the left upper boss 63, the left triple annular groove 4a communicates with the left through holes 1a, 6b, and the right triple annular groove 4b communicates with the right through holes 1u,7n,7m,7k,7 j; when the upper piston body 4 moves rightward close to the right upper boss 73, the left triple ring groove 4a communicates with the left through holes 1t,6n,6m,6k,6j, and the right triple ring groove 4b communicates with the right through holes 1b,7a,7 b.
The outer circumferential side wall of the left lower connecting rod 51 is provided with a left four-ring groove 5e, left four-ring holes 1w,6p and 6o for communicating the left lower sliding hole 62 with the lower communication hole 1v are arranged in the machine body 1 and the left end cover 6, left five through holes 6i,6h,6f and 6g for communicating the left lower sliding hole 62 with the lower oil holes 1m and 1n are arranged in the left end cover 6, and left six through holes 6e for communicating the left four-ring groove 5e with the left upper control cavity 1 f; the outer circumferential side wall of the right lower connecting rod 52 is provided with a right four-ring groove 5f, right four-ring holes 1x,7p and 7o for communicating the right lower sliding hole 72 with the lower communication hole 1v are arranged in the machine body 1 and the right end cover 7, right five through holes 7i,7h,7f and 7g for communicating the right lower sliding hole 72 with the lower oil holes 1m and 1n are arranged in the right end cover 7, and right six through holes 7e for communicating the right four-ring groove 5f with the right upper control cavity 1g are arranged in the right end cover 7; when the lower piston body 5 moves leftwards to approach the left lower convex column 64, the left four ring groove 5e is communicated with the left four-way holes 1w,6p and 6o, and the right four ring groove 5f is communicated with the right five through holes 7i,7h,7f and 7 g; when the lower piston body 5 moves rightward close to the right lower boss 74, the left four ring groove 5e communicates with the left five through holes 6i,6h,6f,6g, and the right four ring groove 5f communicates with the right four through holes 1x,7p,7 o.
A left damping hole 11a is arranged between the left upper piston cavity 2e and the left lower control cavity 1j, and a right damping hole 11b is arranged between the right upper piston cavity 2f and the right lower control cavity 1 k; a left two-damping hole 5b is arranged between the left lower piston cavity 3e and the right upper control cavity 1g, and a right two-damping hole 5a is arranged between the right lower piston cavity 3f and the left upper control cavity 1 f. Wherein, the left damping hole 11a is arranged in the left end cover 6, one end of the left damping hole is communicated with the left upper piston cavity 2e, and the other end of the left damping hole is communicated with the left three-way holes 6c and 6d; the right damping hole 11b is arranged in the right end cover 7, one end of the right damping hole is communicated with the right upper piston cavity 2f, and the other end of the right damping hole is communicated with the right three-way holes 7c and 7 d. The left two damping holes 5b are arranged in the lower piston body 5 and are communicated with the left lower piston cavity 3e, and right oil holes 5d used for communicating the left two damping holes 5b with the right four ring grooves 5f are arranged in the lower piston body 5 and the right lower connecting rod 52; the right two damping holes 5a are arranged in the lower piston body 5 and are communicated with the right lower piston cavity 3f, and left oil holes 5c used for communicating the right two damping holes 5a and the left four ring grooves 5e are arranged in the lower piston body 5 and the left lower connecting rod 51.
As shown in fig. 1, the structure of the invention is that before working, an oil inlet pipe is required to be connected with a port P, a port T is connected with an oil outlet pipe, the positions of an upper left air inlet check valve 9a, an upper right air inlet check valve 9b, a lower left air inlet check valve 9c and a lower right air inlet check valve 9d are connected with an air inlet pipe, and the positions of an upper left air outlet check valve 10a, an upper right air outlet check valve 10b, a lower left air outlet check valve 10c and a lower right air outlet check valve 10d are connected with an air outlet pipe, so that oil can be introduced into the port P to start working after the pipeline of the invention is connected. The position of fig. 1 is the initial position of the invention, after hydraulic oil enters the P port, the hydraulic oil enters the left lower piston cavity 3e through the upper middle ring groove 1c, the first middle hole 1h, the lower middle ring groove 1o, the left two ring grooves 3a, the left two oil holes, the right lower piston cavity 3f, the right two oil holes 3d, the right two ring grooves 3b, the right lower ring groove 1q, the lower communication hole 1v, the second middle hole 1r and the upper communication hole 1s, the hydraulic oil pushes the lower piston body 5 to move rightwards (as shown in fig. 4), at this time, the air in the right lower rodless cavity 13b is compressed, the air is discharged through the right lower air outlet check valve 10d, the volume of the left lower rodless cavity 12b is increased, the air enters the left lower rodless cavity 12b through the left lower air inlet check valve 9c, and the hydraulic oil enters the right upper control cavity 1g through the left two damping holes 5b, the right four ring grooves 5d and the right six right through holes 7e at the P port in the process of moving rightwards of the lower piston body 5e, so that the upper cylinder sleeve 2 is kept at the left end of the left end cover 6.
When the lower piston body 5 moves rightwards to enable the left four ring grooves 5e to communicate the left five through holes 6i,6h,6f and 6g with the left six through holes 6e, the lower piston body 5 does not move to the rightmost end at this time, but hydraulic oil at the P port enters the left upper control cavity 1f through the lower middle ring groove 1o, the lower oil holes 1m and 1n, the left five through holes 6i,6h,6f and 6g, the left four ring groove 5e and the left six through holes 6e, and oil in the right upper control cavity 1g flows out of the T port through the right six through holes 7e, the right four ring grooves 5f, the right four through holes 1x,7P and 7o, the lower communication hole 1v and the second middle hole 1r, at this time, the hydraulic oil pushes the upper cylinder sleeve 2 to move rightward, so that the oil way is reversed, at this time, the lower piston body 5 does not move to the rightmost end yet, and the hydraulic oil enters the upper left piston cavity 2e through the upper middle ring groove 1c, the left ring groove 2a and the left oil hole 2c, the oil in the upper right piston cavity 2f is discharged from the T port through the right oil hole 2d, the right ring groove 2b, the upper right ring groove 1e and the upper communication hole 1s, the hydraulic oil pushes the upper piston body 4 to move rightward until the right end of the lower piston body 5 abuts against the lower right convex column 74, and the lower piston body 5 stops (as shown in fig. 5); the upper piston body 4 continues to move rightward (as shown in fig. 6), at this time, air in the upper right rodless cavity 13a is compressed, and is discharged through the upper right air outlet check valve 10b, the volume of the upper left rodless cavity 12a is increased, air enters the upper left rodless cavity 12a through the upper left air inlet check valve 9a, and in the rightward movement process of the upper piston body 4, oil at the P port enters the lower left control cavity 1j from the upper left piston cavity 2e through the left damping hole 11a and the left three-way hole 6d, so that the lower cylinder sleeve 3 is kept on the right end against the right end cover 7.
When the upper piston body 4 moves rightwards to enable the right three-ring groove 4b to communicate the right through holes 1b,7a,7b with the right three-ring groove 7c,7d, at the moment, the upper piston body 4 does not move to the rightmost end, but hydraulic oil at the P port enters the right lower control cavity 1k through the right through holes 1b,7a,7b, the right three-ring groove 4b and the right three-ring groove 7c,7d, oil in the left lower control cavity 1j flows out of the T port through the left three-ring groove 6c,6d, the left three-ring groove 4a, the left through holes 1T,6n,6m,6k,6j and the upper communication hole 1s, hydraulic oil pushes the lower cylinder sleeve 3 leftwards to change an oil way, at the moment, the upper piston body 4 does not move to the rightmost end, the hydraulic oil enters the right lower piston cavity 3f through the lower middle ring groove 1o, the right two ring grooves 3b and the right two oil holes 3d, the oil in the left lower piston cavity 3e flows out of the left two ring grooves 3c, the left ring grooves 3a, the lower left 1P, the lower left ring groove 1v and the second middle ring groove 1r, the hydraulic oil pushes the lower piston body 5 to move leftwards until the right end of the upper piston body 4 abuts against the upper right convex column 73, the upper piston body 4 stops (as shown in fig. 7), the lower piston body 5 continues to move leftwards (as shown in fig. 8), air in the lower left rodless cavity 12b is compressed at the moment and is discharged through the lower left air outlet check valve 10c, the volume of the lower right rodless cavity 13b is increased, air enters the lower right rodless cavity 13b through the lower right air inlet check valve 9d, and oil at the P port enters the upper left control cavity 1f from the lower right piston cavity 3f through the two right damping holes 5a, the left oil hole 5c, the four left annular groove 5e and the six left through holes 6e in the process of leftwards moving the lower piston body 5, so that the upper cylinder sleeve 2 is kept abutting against the right end cover 7.
When the lower piston body 5 moves leftwards to enable the right four-ring groove 5f to communicate the right five through holes 7i,7h,7f and 7g with the right six through hole 7e, the lower piston body 5 does not move to the leftmost end at this time, but hydraulic oil at the P port enters the right upper control cavity 1g through the lower middle ring groove 1o, the lower oil holes 1m and 1n, the right five through holes 7i,7h,7f and 7g, the right four-ring groove 5f and the right six through hole 7e, and the oil in the left upper control cavity 1f flows out of the T port through the left six through hole 6e, the left four-ring groove 5e, the left four-way holes 1w,6P and 6o, the lower communication hole 1v and the second middle hole 1r, the hydraulic oil pushes the upper cylinder sleeve 2 to move leftwards to change the oil way, the lower piston body 5 does not move to the leftmost end at this time, and the hydraulic oil enters the right upper piston cavity 2f through the upper middle ring groove 1c, the right one ring groove 2b and the right one oil hole 2d, the oil in the upper left piston cavity 2e is discharged from the port T through the left oil hole 2c, the left annular groove 2a, the upper left annular groove 1d and the upper communication hole 1s, hydraulic oil pushes the upper piston body 4 to move leftwards until the left end of the lower piston body 5 abuts against the left lower convex column 64, the lower piston body 5 stops (as shown in fig. 9), the upper piston body 4 continues to move leftwards, at the moment, air in the upper left rodless cavity 12a is compressed, the air is discharged through the upper left air outlet check valve 10a, the volume of the upper right rodless cavity 13a is increased, the air enters the upper right rodless cavity 13a through the upper right air inlet check valve 9b, and in the leftward movement process of the upper piston body 4, the oil at the port P enters the lower right control cavity 1k through the right damping hole 11b and the right three through hole 7d at the position of the upper right piston cavity 2f, so that the lower cylinder sleeve 3 is kept on the left end abutting against the left end cover 6.
When the upper piston body 4 moves leftwards to enable the left three-ring groove 4a to communicate the left through holes 1a,6a and 6b with the left three-ring grooves 6c and 6d, at the moment, the upper piston body 4 does not move to the leftmost end, but hydraulic oil at the P port enters the left lower control cavity 1j through the left through holes 1a,6a and 6b, the left three-ring groove 4a and the left three-ring holes 6c and 6d, oil in the right lower control cavity 1k flows out of the T port through the right three-ring groove 4 c and 7d, the right three-ring groove 4b, the right through holes 1u,7n,7m,7k and 7j and the upper communication hole 1s, hydraulic oil pushes the lower cylinder sleeve 3 to move rightwards to change an oil way, at the moment, the upper piston body 4 does not move to the leftmost end, the hydraulic oil enters the left lower piston cavity 3e through the lower middle ring groove 1o, the left two-ring grooves 3a and the left oil in the right lower piston cavity 3f is discharged out of the T port through the right two-ring grooves 3d, the right lower ring groove 1q and the upper communication hole 1s, the hydraulic oil pushes the lower piston body 5 to move rightwards until the left end of the upper piston body 4 is abutted against the left upper convex column 63, the upper piston body 4 stops (as shown in fig. 1), the lower piston body 5 continues to move rightwards, air in the right lower rodless cavity 13b is compressed at the moment and is discharged through the right lower air outlet check valve 10d, the volume of the left lower rodless cavity 12b is increased, air enters the left lower rodless cavity 12b through the left lower air inlet check valve 9c, and oil at the P port enters the right upper control cavity 1g from the left lower piston cavity 3e through the left two damping holes 5b, the right oil hole 5d, the right four annular groove 5f and the right six through holes 7e in the process of moving rightwards, so that the left end of the upper cylinder sleeve 2 is abutted against the left end cover 6; thus forming a loop. The upper piston body 4 and the lower piston body 5 are not stopped simultaneously when the air compressor is operated, so that continuous output air can be ensured, and pressure pulsation is not generated.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the scope of the invention.
Claims (6)
1. The four-plunger air compressor comprises a machine body, and is characterized in that an upper piston hole and a lower piston hole which penetrate left and right are arranged in the machine body, a left end cover is fixedly arranged at the left ends of the upper piston hole and the lower piston hole on the left side of the machine body, and a right end cover is fixedly arranged at the right ends of the upper piston hole and the lower piston hole on the right side of the machine body; an upper piston body is arranged in the upper piston hole, and a lower piston body is arranged in the lower piston hole; the left side of the left end cover is provided with an upper left pump component connected with the left end of the upper piston body and a lower left pump component connected with the left end of the lower piston body; the right side of the right end cover is provided with an upper right pump component connected with the right end of the upper piston body and a lower right pump component connected with the right end of the lower piston body; the side surface of the machine body is provided with a P port and a T port which are communicated with the upper piston hole and the lower piston hole; an upper control assembly for controlling the upper piston body to move left and right in the upper piston hole is arranged in the upper piston hole, and a lower control assembly for controlling the lower piston body to move left and right in the lower piston hole is arranged in the lower piston hole; when the upper piston body moves rightwards to be close to the right end cover, the lower control assembly controls the lower piston body to move leftwards, and when the upper piston body moves leftwards to be close to the left end cover, the lower control assembly controls the lower piston body to move rightwards; when the lower piston body moves rightwards to be close to the right end cover, the upper control assembly controls the upper piston body to move rightwards, and when the lower piston body moves leftwards to be close to the left end cover, the upper control assembly controls the upper piston body to move leftwards;
the upper control assembly comprises an upper cylinder sleeve, the upper cylinder sleeve is connected in the upper piston hole in a sliding manner, the upper piston body is connected in the upper cylinder sleeve in a sliding manner, the left end cover is provided with an upper left convex column extending into the upper cylinder sleeve, and the right end cover is internally provided with an upper right convex column extending into the upper cylinder sleeve; an upper left piston cavity (2 e) is formed between the upper left convex column and the upper piston body in the upper cylinder sleeve, and an upper right piston cavity (2 f) is formed between the upper right convex column and the upper piston body; an upper left control cavity (1 f) is formed between the left end of the upper cylinder sleeve and the left end cover, and an upper right control cavity (1 g) is formed between the right end of the upper cylinder sleeve and the right end cover in the upper piston hole; the lower control assembly comprises a lower cylinder sleeve, the lower cylinder sleeve is connected in a lower piston hole in a sliding manner, the lower piston body is connected in the lower cylinder sleeve in a sliding manner, the left end cover is provided with a left lower convex column extending into the lower cylinder sleeve, and the right end cover is internally provided with a right lower convex column extending into the lower cylinder sleeve; a left lower piston cavity (3 e) is formed between the left lower convex column and the lower piston body in the lower cylinder sleeve, and a right lower piston cavity (3 f) is formed between the right lower convex column and the lower piston body; a left lower control cavity (1 j) is formed between the left end of the lower cylinder sleeve and the left end cover in the lower piston hole, and a right lower control cavity (1 k) is formed between the right end of the lower cylinder sleeve and the right end cover;
an upper middle ring groove (1 c) communicated with the P port is formed in the inner side wall of the middle part of the upper piston hole, a lower middle ring groove (1 o) is formed in the inner side wall of the middle part of the lower piston hole, and a first middle hole (1 h) used for communicating the upper middle ring groove and the lower middle ring groove is formed in the machine body; the inner side wall of the upper piston hole is symmetrically provided with an upper left annular groove (1 d) and an upper right annular groove (1 e) which are communicated with the T port on the left side and the right side of the upper middle annular groove, and the inner side wall of the lower piston hole is symmetrically provided with a lower left annular groove (1 p) and a lower right annular groove (1 q) which are communicated with the T port on the left side and the right side of the lower middle annular groove; the outer circumferential side wall of the upper cylinder sleeve is provided with a left annular groove (2 a) communicated with the inner hole of the upper cylinder sleeve near the left end cover, and a right annular groove (2 b) communicated with the inner hole of the upper cylinder sleeve near the right end cover; when the left end of the upper cylinder sleeve is close to the left end cover, the left first annular groove is communicated with the left upper annular groove, the upper middle annular groove is communicated with the right first annular groove, and when the right end of the upper cylinder sleeve is close to the right end cover, the right first annular groove is communicated with the right upper annular groove, and the upper middle annular groove is communicated with the left first annular groove; the outer circumferential side wall of the lower cylinder sleeve is provided with a left two-ring groove (3 a) communicated with the inner hole of the lower cylinder sleeve near the left end cover, and a right two-ring groove (3 b) communicated with the inner hole of the lower cylinder sleeve near the right end cover; when the left end of the lower cylinder sleeve is close to the left end cover, the left two ring grooves are communicated with the left lower ring groove, the lower middle ring groove is communicated with the right two ring grooves, and when the right end of the lower cylinder sleeve is close to the right end cover, the right two ring grooves are communicated with the right lower ring groove, and the lower middle ring groove is communicated with the left two ring grooves;
a left damping hole (11 a) is arranged between the left upper piston cavity and the left lower control cavity, and a right damping hole (11 b) is arranged between the right upper piston cavity and the right lower control cavity; a left two damping hole (5 b) is arranged between the left lower piston cavity and the right upper control cavity, and a right two damping hole (5 a) is arranged between the right lower piston cavity and the left upper control cavity; when the upper piston body is close to the upper left convex column, the P port is communicated with the lower left control cavity, the lower right control cavity is communicated with the T port, and when the upper piston body is close to the upper right convex column, the P port is communicated with the lower right control cavity, and the lower left control cavity is communicated with the T port; when the lower piston body is close to the lower right convex column, the P port is communicated with the upper left control cavity, the upper right control cavity is communicated with the T port, and when the lower piston body is close to the lower left convex column, the P port is communicated with the upper right control cavity, and the upper left control cavity is communicated with the T port.
2. The four-plunger air compressor of claim 1, wherein a left pump body is fixedly mounted on the left side of the left end cover, and a right pump body is fixedly mounted on the right side of the right end cover; the left upper pump assembly comprises a left upper piston, a left upper pump hole coaxial with the upper piston hole is arranged in the left pump body, a left upper sliding hole used for communicating the left upper pump hole and the upper piston hole is arranged in the left end cover, and the left upper sliding hole and the upper piston hole are coaxially arranged; the left end of the upper piston body is provided with a left upper connecting rod which penetrates through the left upper sliding hole and stretches into the left upper pump hole; the left upper piston is connected in the left upper pump hole in a sliding way and is fixedly connected with the left end of the left upper connecting rod; an upper left rodless cavity is formed in the upper left pump hole between the upper left piston and the left end of the upper left pump hole, and the left end of the left pump body is provided with an upper left air inlet one-way valve and an upper left air outlet one-way valve which are communicated with the upper left rodless cavity;
the left lower pump assembly comprises a left lower piston, a left lower pump hole coaxial with the lower piston hole is arranged in the left pump body, a left lower sliding hole used for communicating the left lower pump hole and the lower piston hole is arranged in the left end cover, and the left lower sliding hole and the lower piston hole are coaxially arranged; the left end of the lower piston body is provided with a left lower connecting rod which penetrates through the left lower sliding hole and stretches into the left lower pump hole; the left lower piston is connected in the left lower pump hole in a sliding way and is fixedly connected with the left end of the left lower connecting rod; a left lower rodless cavity is formed in the left lower pump hole between the left lower piston and the left end of the left lower pump hole, and a left lower air inlet one-way valve and a left lower air outlet one-way valve which are communicated with the left lower rodless cavity are arranged at the left end of the left pump body;
the right upper pump assembly comprises a right upper piston, a right upper pump hole coaxial with the upper piston hole is arranged in the right pump body, a right upper sliding hole used for communicating the right upper pump hole and the upper piston hole is arranged in the right end cover, and the right upper sliding hole and the upper piston hole are coaxially arranged; the right end of the upper piston body is provided with an upper right connecting rod which penetrates through the upper right sliding hole and stretches into the upper right pump hole; the right upper piston is connected in the right upper pump hole in a sliding way and is fixedly connected with the right end of the right upper connecting rod; an upper right rodless cavity is formed in the upper right pump hole between the upper right piston and the right end of the upper right pump hole, and the right end of the right pump body is provided with an upper right air inlet one-way valve and an upper right air outlet one-way valve which are communicated with the upper right rodless cavity;
the right lower pump assembly comprises a right lower piston, a right lower pump hole coaxial with the lower piston hole is arranged in the right pump body, a right lower sliding hole for communicating the right lower pump hole and the lower piston hole is arranged in the right end cover, and the right lower sliding hole and the lower piston hole are coaxially arranged; the right end of the lower piston body is provided with a right lower connecting rod which penetrates through the right lower sliding hole and stretches into the right lower pump hole; the right lower piston is connected in the right lower pump hole in a sliding way and is fixedly connected with the right end of the right lower connecting rod; the right lower pump hole is internally provided with a right lower air inlet one-way valve and a right lower air outlet one-way valve which are communicated with the right lower rodless cavity.
3. The four-plunger air compressor according to claim 2, wherein an upper communication hole (1 s) for communicating the upper left annular groove (1 d) and the upper right annular groove (1 e) and a lower communication hole (1 v) for communicating the lower left annular groove (1 p) and the lower right annular groove (1 q) are provided in the machine body, the upper communication hole communicates with the T-port, and a second middle hole for communicating the upper communication hole and the lower communication hole is provided in the machine body; the machine body is internally provided with lower oil holes (1 m,1 n) communicated with the lower middle ring groove.
4. A four-plunger air compressor according to claim 3, wherein the outer circumferential side wall of the left upper connecting rod is provided with a left three-ring groove (4 a), the machine body and the left end cover are internally provided with left through holes (1 a,6 b) for communicating the left upper sliding hole and the P port, and left through holes (1 t,6n,6m,6k,6 j) for communicating the left upper sliding hole and the upper communication hole, and the left end cover is internally provided with left three through holes (6 c,6 d) for communicating the left three-ring groove and the left lower control cavity; the outer circumferential side wall of the right upper connecting rod is provided with a right three-ring groove (4 b), right through holes (1 b,7a,7 b) for communicating the right upper sliding hole and the P port and right through holes (1 u,7n,7m,7k,7 j) for communicating the right upper sliding hole and the upper communication hole are arranged in the machine body and the right end cover, and right three through holes (7 c,7 d) for communicating the right three-ring groove and the right lower control cavity are arranged in the right end cover; when the upper piston body moves leftwards to be close to the left upper convex column, the left three ring grooves are communicated with the left through hole, and the right three ring grooves are communicated with the right through hole; when the upper piston body moves rightwards to be close to the right upper convex column, the left three ring grooves are communicated with the left through holes, and the right three ring grooves are communicated with the right through holes;
the outer circumferential side wall of the left lower connecting rod is provided with a left four-ring groove (5 e), a left four-through hole (1 w,6p,6 o) for communicating the left lower sliding hole with the lower communication hole is arranged in the machine body and the left end cover, a left five-through hole (6 i,6h,6f,6 g) for communicating the left lower sliding hole with the lower oil hole and a left six-through hole (6 e) for communicating the left four-ring groove with the left upper control cavity are arranged in the left end cover; the outer circumferential side wall of the right lower connecting rod is provided with a right four ring groove 5f, right four through holes (1 x,7p,7 o) for communicating the right lower sliding hole and the lower communication hole are formed in the machine body and the right end cover, right five through holes (7 i,7h,7f,7 g) for communicating the right lower sliding hole and the lower oil hole and right six through holes (7 e) for communicating the right four ring groove and the right upper control cavity are formed in the right end cover; when the lower piston body moves leftwards to be close to the left lower convex column, the left four ring groove is communicated with the left four-way hole, and the right four ring groove is communicated with the right five through holes; when the lower piston body moves rightwards to be close to the right lower convex column, the left four annular groove is communicated with the left five through holes, and the right four annular groove is communicated with the right four through holes.
5. The four-plunger air compressor of claim 4, wherein the left damping hole is arranged in the left end cover, one end of the left damping hole is communicated with the left upper piston cavity, and the other end of the left damping hole is communicated with the left three-way hole; the right damping hole is arranged in the right end cover, one end of the right damping hole is communicated with the right upper piston cavity, and the other end of the right damping hole is communicated with the right three-way hole;
the left two damping holes are arranged in the lower piston body and are communicated with the left lower piston cavity, and right oil holes (5 d) used for communicating the left two damping holes with the right four ring grooves are formed in the lower piston body and the right lower connecting rod; the right two damping holes are arranged in the lower piston body and are communicated with the right lower piston cavity, and left oil holes (5 c) used for communicating the right two damping holes and the left four ring grooves are formed in the lower piston body and the left lower connecting rod.
6. The four-plunger air compressor according to claim 1, wherein the left ring groove is communicated with the inner hole of the upper cylinder sleeve through a left oil hole (2 c) arranged in the upper cylinder sleeve, and the right ring groove is communicated with the inner hole of the upper cylinder sleeve through a right oil hole (2 d) arranged in the upper cylinder sleeve; the left two ring grooves are communicated with the inner hole of the lower cylinder sleeve through left two oil holes (3 c) arranged in the lower cylinder sleeve, and the right two ring grooves are communicated with the inner hole of the lower cylinder sleeve through right two oil holes (3 d) arranged in the lower cylinder sleeve.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010109737.2A CN111287936B (en) | 2020-02-22 | 2020-02-22 | Four-plunger air compressor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010109737.2A CN111287936B (en) | 2020-02-22 | 2020-02-22 | Four-plunger air compressor |
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| Publication Number | Publication Date |
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| CN111287936A CN111287936A (en) | 2020-06-16 |
| CN111287936B true CN111287936B (en) | 2023-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU615249A1 (en) * | 1977-01-03 | 1978-07-15 | Voloshchuk Aleksandr | Fluid-driven pump |
| DE3207571A1 (en) * | 1981-03-25 | 1982-10-28 | Veb Kombinat Orsta-Hydraulik, Ddr 7010 Leipzig | Double-acting pressure transducer which reverses automatically in the end positions |
| CN104847713A (en) * | 2015-06-08 | 2015-08-19 | 山东奥凯机电设备有限公司 | Full-automatic built-in reversing hydraulic boosting pump |
| CN108591138A (en) * | 2018-05-04 | 2018-09-28 | 东莞海特帕沃液压科技有限公司 | A kind of four plunger hydraulic boosters |
| CN108730143A (en) * | 2018-05-18 | 2018-11-02 | 东莞海特帕沃液压科技有限公司 | A kind of liquid booster pump |
-
2020
- 2020-02-22 CN CN202010109737.2A patent/CN111287936B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU615249A1 (en) * | 1977-01-03 | 1978-07-15 | Voloshchuk Aleksandr | Fluid-driven pump |
| DE3207571A1 (en) * | 1981-03-25 | 1982-10-28 | Veb Kombinat Orsta-Hydraulik, Ddr 7010 Leipzig | Double-acting pressure transducer which reverses automatically in the end positions |
| CN104847713A (en) * | 2015-06-08 | 2015-08-19 | 山东奥凯机电设备有限公司 | Full-automatic built-in reversing hydraulic boosting pump |
| CN108591138A (en) * | 2018-05-04 | 2018-09-28 | 东莞海特帕沃液压科技有限公司 | A kind of four plunger hydraulic boosters |
| CN108730143A (en) * | 2018-05-18 | 2018-11-02 | 东莞海特帕沃液压科技有限公司 | A kind of liquid booster pump |
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| Publication number | Publication date |
|---|---|
| CN111287936A (en) | 2020-06-16 |
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