CN111120279A - Hydraulic diaphragm pump - Google Patents
Hydraulic diaphragm pump Download PDFInfo
- Publication number
- CN111120279A CN111120279A CN201911398283.9A CN201911398283A CN111120279A CN 111120279 A CN111120279 A CN 111120279A CN 201911398283 A CN201911398283 A CN 201911398283A CN 111120279 A CN111120279 A CN 111120279A
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- Prior art keywords
- oil
- hole
- pump
- port
- end cover
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- 239000007788 liquid Substances 0.000 claims abstract description 88
- 230000000903 blocking effect Effects 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 6
- 238000013016 damping Methods 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 2
- 239000003921 oil Substances 0.000 description 141
- 239000010720 hydraulic oil Substances 0.000 description 13
- 230000005540 biological transmission Effects 0.000 description 4
- 239000002360 explosive Substances 0.000 description 4
- 239000002002 slurry Substances 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 230000009347 mechanical transmission Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009856 non-ferrous metallurgy Methods 0.000 description 1
- -1 ore pulp Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
- F04B43/06—Pumps having fluid drive
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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
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
- F04B43/06—Pumps having fluid drive
- F04B43/073—Pumps having fluid drive the actuating fluid being controlled by at least one valve
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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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
-
- 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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention discloses a hydraulic diaphragm pump, which comprises a pump body, wherein a left-right through mounting hole is formed in the pump body, a left end cover is fixedly mounted at the left end of the pump body, and a right end cover is fixedly mounted at the right end of the pump body; a left pump shell is fixedly arranged on the left side of the left end cover, and a right pump shell is fixedly arranged on the right side of the right end cover; a left diaphragm is arranged in the left pump shell, and a right diaphragm is arranged in the right pump shell; a piston rod is arranged in the mounting hole, the left end of the piston rod penetrates through the left end cover to be fixedly connected with the left diaphragm, and the right end of the piston rod penetrates through the right end cover to be fixedly connected with the right diaphragm; a left pump cavity is formed in the left pump shell, and a right pump cavity is formed in the right pump shell; the left pump shell is provided with a left liquid inlet pipe and a left liquid outlet pipe, and the right pump shell is provided with a right liquid inlet pipe and a right liquid outlet pipe; a P port and a T port are formed in the side face of the pump body; a control assembly is arranged in the mounting hole; the hydraulic diaphragm pump is highly integrated in overall design, and the direction of an oil way is changed through full-oil-way control without electric control.
Description
Technical Field
The invention belongs to the technical field of diaphragm pumps, and particularly relates to a hydraulic diaphragm pump.
Background
The diaphragm pump has wide application, and can be used for conveying high-temperature, high-pressure, high-concentration, high-density, large-particle, easily-precipitated, strongly-abrasive, strongly-corrosive, inflammable and explosive media. The device is industrially used for industries such as petroleum exploitation, petrochemical industry, coal chemical industry, nonferrous metallurgy, electric power and the like, and conveying chemical media, slurry, ore pulp, coal water slurry, slag slurry, sewage and the like. One of its remarkable features is that the conveying medium and the working medium are separated by a diaphragm, theoretically achieving zero leakage. The transmission form of the device comprises mechanical transmission, hydraulic transmission, pneumatic transmission and the like, the mechanical transmission is driven by the rotation of a motor, and the device needs electric control, is not easy to use in inflammable and explosive occasions, and cannot be completely immersed for operation; the pressure of pneumatic transmission is limited, the pressure standard required by high pressure cannot be achieved, and the conveying capacity of large particles and high-density media is limited, so that a hydraulic diaphragm pump with high integration level, small volume and simple structure is urgently needed to be designed.
Disclosure of Invention
The invention aims to provide a hydraulic diaphragm pump, which not only has high integration of the whole design and saves space and parts; and the direction of the oil way is changed through the control of the whole oil way, electric control is not needed, and the device can work in flammable and explosive environments.
In order to achieve the purpose, the invention provides the following technical scheme: a hydraulic diaphragm pump comprises a pump body, wherein a left-right through mounting hole is formed in the pump body, a left end cover is fixedly mounted at the left end of the pump body, and a right end cover is fixedly mounted at the right end of the pump body; a left pump shell is fixedly arranged on the left side of the left end cover, and a right pump shell is fixedly arranged on the right side of the right end cover; a left diaphragm is arranged in the left pump shell, and a right diaphragm is arranged in the right pump shell; a piston rod is arranged in the mounting hole, the left end of the piston rod penetrates through the left end cover to be fixedly connected with the left diaphragm, and the right end of the piston rod penetrates through the right end cover to be fixedly connected with the right diaphragm;
a left pump cavity is formed between the left side of the left pump shell and the left diaphragm in the left pump shell, and a right pump cavity is formed between the right side of the right pump shell and the right diaphragm in the right pump shell; the left pump shell is provided with a left liquid inlet pipe and a left liquid outlet pipe which are communicated with the left pump cavity, and the right pump shell is provided with a right liquid inlet pipe and a right liquid outlet pipe which are communicated with the right pump cavity; liquid inlet one-way valves are arranged in the left liquid inlet pipe and the right liquid inlet pipe, and liquid outlet one-way valves are arranged in the left liquid outlet pipe and the right liquid outlet pipe; a P port and a T port which are communicated with the mounting hole are formed in the side face of the pump body; and a control assembly for controlling the piston rod to reciprocate left and right is arranged in the mounting hole.
In a further technical scheme, the control assembly comprises a valve plate which is rotatably connected in a mounting hole, a connecting hole is formed in the valve plate along the axial direction of a piston rod, and the piston rod is connected in the connecting hole in a sliding manner; a left control cavity is formed between the left diaphragm and the left end cover in the left pump shell, and a right control cavity is formed between the right diaphragm and the right end cover in the right pump shell; the side surface of the circumference of the valve plate is provided with a first fan ring groove and a second fan ring groove which have the same included angle, and the distance between two arcs of the second fan ring groove is greater than the distance between two arcs of the first fan ring groove; a first blocking piece extending into the first circular groove and a second blocking piece extending into the second circular groove are arranged on the inner side wall of the mounting hole along the radial direction of the mounting hole;
when the first baffle plate is positioned at one end of the first fan ring groove, the P port is communicated with the right control cavity, and the T port is communicated with the left control cavity; when the first blocking piece is positioned at the other end of the first fan ring groove, the P port is communicated with the left control cavity, and the T port is communicated with the right control cavity.
In a further technical scheme, a left oil hole and a left oil hole which are used for communicating a left control cavity and a mounting hole are formed in the left end cover, and a right oil hole which are used for communicating a right control cavity and the mounting hole are formed in the right end cover; the valve plate is provided with a first oil inlet hole matched with the P port and the right oil hole, a second oil inlet hole matched with the P port and the left oil hole, a first oil return hole matched with the T port and the left oil hole, and a second oil return hole matched with the T port and the right oil hole; when the first baffle plate is positioned at one end of the first fan ring groove, the P port is communicated with the right oil hole through the first oil inlet hole, and the T port is communicated with the left oil hole and the right oil hole through the first oil return hole; when the first separation blade is located the other end of first fan annular groove, P mouth passes through second inlet port and the first oilhole intercommunication of left side, and the T mouth passes through second oil gallery and the intercommunication of two oilholes on the right side.
In a further technical scheme, the first blocking piece divides the first fan-shaped ring groove into a first control cavity and a second control cavity, and the second blocking piece divides the second fan-shaped ring groove into a third control cavity and a fourth control cavity; a first oil hole for communicating the P port with the first control cavity, a second oil hole for communicating the second control cavity with the T port and a third oil hole for communicating the fourth control cavity with the T port are formed in the pump body;
a left sliding hole for the piston rod to pass through is formed in the left end cover, and a right sliding hole for the piston rod to pass through is formed in the right end cover; fourth oil holes used for communicating the first oil hole with the left sliding hole are formed in the pump body and the left end cover, fifth oil holes used for communicating the left sliding hole with the right sliding hole are formed in the pump body, the left end cover and the right end cover, and eighth oil holes used for communicating the third control cavity with the fifth oil holes are formed in the pump body; the side surface of the valve plate facing to the right end cover is provided with an annular groove which takes the piston rod as the center of a circle, and the right end cover is internally provided with a sixth oil hole which is used for communicating the annular groove and the right sliding hole; a seventh oil hole used for communicating the annular groove and the second oil return hole is formed in the valve plate, and an arc-shaped groove used for communicating the first oil return hole and the second oil return hole is formed in the side face of the outer circumference of the valve plate; the left end cover is provided with a damping hole for communicating the fifth oil hole with the left control cavity;
the piston rod is provided with a left annular groove at the position close to the left end and a right annular groove at the position close to the right end on the outer circumferential side surface of the piston rod, when the piston rod moves rightwards to the limit position, the fourth oil hole and the fifth oil hole are communicated through the left annular groove, and when the piston rod moves leftwards to the limit position, the fifth oil hole and the sixth oil hole are communicated through the right annular groove.
In a further technical scheme, a first clamping groove is formed in one end, far away from the inner side wall of the mounting hole, of the first blocking piece, and a first sealing sheet is arranged in the first clamping groove; and a second clamping groove is formed in one end, far away from the inner side wall of the mounting hole, of the second blocking piece, and a second sealing sheet is arranged in the second clamping groove.
In a further technical scheme, a liquid inlet main pipe is arranged between the left liquid inlet pipe and the right liquid inlet pipe, and a liquid inlet is formed in the liquid inlet main pipe; a liquid outlet main pipe is arranged between the left liquid outlet pipe and the right liquid outlet pipe, and a liquid outlet is formed in the liquid outlet main pipe.
Advantageous effects
Compared with the prior art, the technical scheme of the invention has the following advantages:
(1) the mode that the direction of an oil way is changed by matching the rotation of the valve plate with the pump body enables the overall design to be highly integrated, and the space and parts are saved;
(2) the direction of the oil way is changed through the control of the whole oil way, and the electric control is not needed, so that the device can work in flammable and explosive environments;
(3) through the left annular groove and the right annular groove on the piston rod, the mode of changing the on-off of the oil way is changed to change the powerful direction after the piston rod moves in place, the reversing is flexible, and the diaphragm pump can smoothly run.
Drawings
FIG. 1 is a cross-sectional view of the piston rod of the present invention as it moves to the far left end;
FIG. 2 is a cross-sectional view taken in the direction A-A of the piston rod of the present invention as it moves to the far left end;
FIG. 3 is a cross-sectional view in the direction B-B of the piston rod of the present invention as it moves to the far left end;
FIG. 4 is a cross-sectional view of the piston rod of the present invention as it moves to the rightmost end and the oil path is reversed;
FIG. 5 is a cross-sectional view taken in the direction A-A when the piston rod of the present invention is moved to the rightmost end and the oil path is reversed forward;
FIG. 6 is a cross-sectional view taken in the direction B-B when the piston rod of the present invention is moved to the rightmost end and the oil path is reversed forward;
FIG. 7 is a cross-sectional view of the piston rod of the present invention after it has moved to the rightmost end and the oil path has been reversed;
FIG. 8 is a cross-sectional view taken in the direction A-A of the piston rod of the present invention after the piston rod has moved to the rightmost end and the oil path has been reversed;
FIG. 9 is a cross-sectional view taken in the direction B-B when the piston rod of the present invention is moved to the rightmost end and the oil path is reversed;
FIG. 10 is a cross-sectional view of the piston rod of the present invention moving to the far left with the oil path reversed forward;
FIG. 11 is a cross-sectional view taken in the direction A-A of the piston rod moving to the far left and with the oil path reversed forward in accordance with the present invention;
fig. 12 is a cross-sectional view in the direction B-B when the piston rod of the present invention is moved to the leftmost end and the oil path is reversed forward.
Detailed Description
Referring to fig. 1-12, a hydraulic diaphragm pump includes a pump body 1, a left-right through mounting hole 101 is provided in the pump body 1, a left end cap 2 is fixedly mounted at the left end of the pump body 1, and a right end cap 3 is fixedly mounted at the right end of the pump body 1; a left pump shell 61 is fixedly mounted on the left side of the left end cover 2, and a right pump shell 71 is fixedly mounted on the right side of the right end cover 3; a left diaphragm 6 is arranged in the left pump shell 61, and a right diaphragm 7 is arranged in the right pump shell 71; a piston rod 5 is arranged in the mounting hole 101, the left end of the piston rod 5 penetrates through the left end cover 2 to be fixedly connected with the left diaphragm 6, and the right end of the piston rod 5 penetrates through the right end cover 3 to be fixedly connected with the right diaphragm 7;
the left pump case 61 has a left pump chamber 6a formed therein between the left side thereof and the left diaphragm 6, and the right pump case 71 has a right pump chamber 7a formed therein between the right side thereof and the right diaphragm 7; a left liquid inlet pipe 61a and a left liquid outlet pipe 61b which are communicated with the left pump cavity 6a are arranged on the left pump shell 61, and a right liquid inlet pipe 71a and a right liquid outlet pipe 71b which are communicated with the right pump cavity 7a are arranged on the right pump shell 71; liquid inlet one- way valves 9a and 8a are arranged in the left liquid inlet pipe 61a and the right liquid inlet pipe 71a, and liquid outlet one- way valves 9b and 8b are arranged in the left liquid outlet pipe 61b and the right liquid outlet pipe 71 b; a liquid inlet header pipe 67 is arranged between the left liquid inlet pipe 61a and the right liquid inlet pipe 71a, and a liquid inlet 66 is arranged on the liquid inlet header pipe 67; a liquid outlet header pipe 68 is arranged between the left liquid outlet pipe 61b and the right liquid outlet pipe 71b, and a liquid outlet 69 is arranged on the liquid outlet header pipe 68; a P port and a T port which are communicated with the mounting hole 101 are formed in the side face of the pump body 1; and a control assembly for controlling the piston rod 5 to reciprocate left and right is arranged in the mounting hole 101.
The control assembly comprises a valve plate 4 which is rotatably connected in the mounting hole 101, a connecting hole 401 is formed in the valve plate 4 along the axial direction of a piston rod 5, and the piston rod 5 is connected in the connecting hole 401 in a sliding manner; the left pump shell 61 forms a left control cavity 2a between the left diaphragm 6 and the left end cover 2, and the right pump shell 71 forms a right control cavity 3a between the right diaphragm 7 and the right end cover 3; a first fan-shaped ring groove 402 and a second fan-shaped ring groove 403 with the same included angle are arranged on the circumferential side surface of the valve plate 4, and the distance between two arcs of the second fan-shaped ring groove 403 is greater than the distance between two arcs of the first fan-shaped ring groove 402; a first baffle plate 1n extending into the first fan-shaped ring groove 402 and a second baffle plate 1m extending into the second fan-shaped ring groove 403 are arranged on the inner side wall of the mounting hole 101 along the radial direction of the mounting hole 101; a first clamping groove 1n1 is formed in one end, far away from the inner side wall of the mounting hole 101, of the first blocking piece 1n, and a first sealing sheet 80 is arranged in the first clamping groove 1n 1; one end of the second blocking piece 1m far away from the inner side wall of the mounting hole 101 is provided with a second clamping groove 1m1, and a second sealing piece 81 is arranged in the second clamping groove 1m 1.
The left end cover 2 is provided with a left oil hole 2b and a left oil hole 2c which are used for communicating the left control cavity 2a with the mounting hole 101, and the right end cover 3 is provided with a right oil hole 3b and a right oil hole 3c which are used for communicating the right control cavity 3a with the mounting hole 101; the valve plate 4 is provided with first oil inlet holes 4a and 4b matched with the port P and the right oil hole 3b, second oil inlet holes 4e and 4f matched with the port P and the left oil hole 2b, first oil return holes 4d and 4c matched with the port T and the left oil hole 2c, and second oil return holes 4g and 4h matched with the port T and the right oil hole; when the first baffle plate 1n is positioned at one end of the first fan ring groove 402, the port P is communicated with the right control cavity 3a through the first oil inlet holes 4a and 4b and the right oil hole 3b, and the port T is communicated with the left control cavity 2a through the first oil return holes 4d and 4c and the left oil hole 2 c; when the first baffle plate 1n is located at the other end of the first fan ring groove 402, the port P is communicated with the left control chamber 2a through the second oil inlet holes 4e and 4f and the left oil hole 2b, and the port T is communicated with the right control chamber 3a through the second oil return holes 4g and 4h and the right oil hole 3 c.
The first blocking piece 1n divides the first fan ring groove 402 into a first control cavity 4m and a second control cavity 4n, and the second blocking piece 1m divides the second fan ring groove 403 into a third control cavity 4p and a fourth control cavity 4 q; first oil holes 1c and 1g for communicating the port P with the first control chamber 4m, second oil holes 1f and 1d for communicating the second control chamber 4n with the port T, and third oil holes 1i and 1e for communicating the fourth control chamber 4q with the port T are formed in the pump body 1.
A left sliding hole 201 for the piston rod 5 to pass through is formed in the left end cover 2, and a right sliding hole 301 for the piston rod 5 to pass through is formed in the right end cover 3; fourth oil holes 1h, 2d and 2e for communicating the first oil holes 1c and 1g with the left slide hole 201 are formed in the pump body 1 and the left end cover 2, fifth oil holes 2f, 2g, 1j, 3d and 3e for communicating the left slide hole 201 with the right slide hole 301 are formed in the pump body 1, the left end cover 2 and the right end cover 3, and an eighth oil hole 1k for communicating the third control cavity 4p with the fifth oil holes is formed in the pump body 1; an annular groove 4r taking the piston rod 5 as the center of a circle is arranged on the side surface of the valve plate 4 facing the right end cover 3, and a sixth oil hole 3f used for communicating the annular groove 4r with the right slide hole 301 is arranged in the right end cover 3; a seventh oil hole 4j, 4i for communicating the annular groove 4r with a second oil return hole 4g, 4h is formed in the valve plate 4, and an arc-shaped groove 4k for communicating the first oil return hole 4c with the second oil return hole 4g is formed in the side surface of the outer circumference of the valve plate 4; the left end cover 2 is provided with a damping hole 2h for communicating the fifth oil hole with the left control cavity 2 a.
The outer circumferential side surface of the piston rod 5 is provided with a left ring groove 5a at a position close to the left end and a right ring groove 5b at a position close to the right end, when the piston rod 5 moves rightwards to a limit position, the fourth oil hole 1h, 2d, 2e and the fifth oil hole are communicated by the left ring groove 5a, and when the piston rod 5 moves leftwards to the limit position, the fifth oil hole and the sixth oil hole 3f are communicated by the right ring groove 5 b.
When an oil inlet pipe is required to be connected with a P port before the hydraulic diaphragm pump works, a T port is connected with an oil outlet pipe, a liquid inlet header pipe 67 is connected with an input pipeline, a liquid outlet header pipe 68 is connected with an output pipeline, when the hydraulic diaphragm pump pipeline of the invention is connected, oil can be introduced into the P port to start working, as shown in the initial position of the hydraulic diaphragm pump shown in figure 1, hydraulic oil enters a first control cavity 4m from first oil holes 1c and 1g through the P port, meanwhile, the hydraulic oil in a second control cavity 4n is discharged out of the T port from second oil holes 1f and 1d, the oil in a third control cavity 4P is discharged out of the T port from an eighth oil hole 1k, fifth oil holes 1j, 3d and 3e, a right annular groove 5b, a sixth oil hole 3f, an annular groove 4r, seventh oil holes 4j and 4i, a second oil return hole 4g, an arc-shaped oil hole 4k and a first oil return hole 4c, the oil in the T port enters the fourth control cavity 4q through the third oil holes 1e, 1i, the oil pressure in the first control cavity 4m is the same as that in the P port, so that the valve plate 4 is kept in the state shown in figures 1, 2 and 3, the hydraulic oil in the P port enters the right control cavity 3a through the first oil inlet holes 4a, 4b and the right oil hole 3b, the right diaphragm 7 is pushed to rise, the piston rod 5 is driven to move rightwards, the oil in the left control cavity 2a is discharged out of the T port through the left second oil hole 2c and the first oil return holes 4d and 4c, the left diaphragm 6 is contracted, at the moment, the right pump cavity 7a is compressed, the one-way valve 8b in the right liquid outlet pipe 71b is opened, the liquid inlet one-way valve 8a in the right liquid inlet pipe 71a is closed, the conveying medium is discharged out of the diaphragm pump, the left pump cavity 6a is enlarged, the liquid inlet one-way valve 9a in the left liquid outlet pipe 61a is opened, the one-way liquid outlet, the medium is sucked into the diaphragm pump; when the piston rod 5 moves to the extreme position of the rightmost end, as shown in fig. 4, 5 and 6, the left ring groove 5a connects the fourth oil hole 2e and the fifth oil hole 2f, the hydraulic oil at the position P enters the third control chamber 4P through the hole 1a, the first oil hole 1c, the fourth oil holes 1h, 2d, 2e, the left ring groove 5a, the fifth oil holes 2f, 2g, 1j and the eighth oil hole 1k, because the distance between the two arcs of the second fan ring groove 403 is greater than the distance between the two arcs of the first fan ring groove 402, the force-bearing area of the third control chamber 4P is greater than the force-bearing area of the first control chamber 4m, so the hydraulic oil pushes the port plate 4 to rotate counterclockwise to the position shown in fig. 7, 8 and 9, at this time, the hydraulic oil passes through the position P and then enters the left control chamber 2a2a through the second oil holes 4e, 4f and the left oil hole 2b, and pushes the left diaphragm 6 to rise, the piston rod 5 is driven to move leftwards, oil in the right control cavity 3a is discharged out of a T port through the right two oil holes 3c and the second oil return holes 4h and 4g, so that the right diaphragm 7 is contracted, at the moment, the left pump cavity 6a is compressed, the liquid inlet one-way valve 9a in the left liquid inlet pipe 61a is closed, the liquid outlet one-way valve 9b in the left liquid outlet pipe 61b is opened, a conveying medium is discharged out of the diaphragm pump, the right pump cavity 7a is enlarged, the liquid inlet one-way valve 8a in the right liquid inlet pipe 71a is opened, the liquid outlet one-way valve 8b in the right liquid outlet pipe 71b is closed, and the medium is sucked into; during the leftward movement of the piston rod 5, the left ring groove 5a moves, the fourth oil hole 2e is disconnected from the fifth oil hole 2f, the hydraulic oil in the left control chamber 2a enters the third control chamber 4P through the damping hole 2h, the fifth oil hole 2f, 2g, 1j and the eighth oil hole 1k, the pressure in the hydraulic oil is the same as that at the position P, the port plate 4 can be maintained at the position shown in fig. 7, 8 and 9, when the piston rod 5 moves to the extreme left position, as shown in fig. 10, 11 and 12, the fifth oil hole 3e is communicated with the sixth oil hole 3f by the right ring groove 5b, the hydraulic oil enters the first control chamber 4m through the port P from the first oil holes 1c and 1g, while the hydraulic oil in the second control chamber 4n is discharged from the second oil holes 1f and 1d, the hydraulic oil in the third control chamber 4P passes through the eighth oil hole 1k and the fifth oil hole 1j, 3d, 3e, a right ring groove 5b, a sixth oil hole 3f, an annular groove 4r, seventh oil holes 4j, 4i, a second oil return hole 4g, an arc-shaped groove 4k and a first oil return hole 4c, wherein oil at the T port enters a fourth control cavity 4q through the third oil holes 1e, 1i so that the hydraulic oil pushes the port plate 4 to rotate clockwise to the position shown in the figures 1, 2 and 3, the hydraulic oil at the P port enters a right control cavity 3a through the first oil inlet holes 4a, 4b and the right oil hole 3b to push the right diaphragm 7 to rise and drive the piston rod 5 to move rightwards, the oil at the left control cavity 2a is discharged out of the T port through the left second oil hole 2c and the first oil return holes 4d, 4c, so that the left diaphragm 6 is contracted, at the moment, the right pump cavity 7a is compressed, a liquid outlet one-way valve 8b in the right liquid outlet pipe 71b is opened, and a liquid inlet one-way valve 8a in the right liquid inlet pipe, the conveying medium is discharged out of the diaphragm pump, the left pump cavity 6a is enlarged, the liquid inlet one-way valve 9a in the left liquid inlet pipe 61a is opened, the liquid outlet one-way valve 9b in the left liquid outlet pipe 61b is closed, and the medium is sucked into the diaphragm pump; by repeating the actions, the hydraulic diaphragm pump can complete continuous reciprocating compression acting actions.
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 hydraulic diaphragm pump is characterized by comprising a pump body, wherein a left-right through mounting hole is formed in the pump body, a left end cover is fixedly mounted at the left end of the pump body, and a right end cover is fixedly mounted at the right end of the pump body; a left pump shell is fixedly arranged on the left side of the left end cover, and a right pump shell is fixedly arranged on the right side of the right end cover; a left diaphragm is arranged in the left pump shell, and a right diaphragm is arranged in the right pump shell; a piston rod is arranged in the mounting hole, the left end of the piston rod penetrates through the left end cover to be fixedly connected with the left diaphragm, and the right end of the piston rod penetrates through the right end cover to be fixedly connected with the right diaphragm;
a left pump cavity is formed between the left side of the left pump shell and the left diaphragm in the left pump shell, and a right pump cavity is formed between the right side of the right pump shell and the right diaphragm in the right pump shell; the left pump shell is provided with a left liquid inlet pipe and a left liquid outlet pipe which are communicated with the left pump cavity, and the right pump shell is provided with a right liquid inlet pipe and a right liquid outlet pipe which are communicated with the right pump cavity; liquid inlet one-way valves are arranged in the left liquid inlet pipe and the right liquid inlet pipe, and liquid outlet one-way valves are arranged in the left liquid outlet pipe and the right liquid outlet pipe; a P port and a T port which are communicated with the mounting hole are formed in the side face of the pump body; and a control assembly for controlling the piston rod to reciprocate left and right is arranged in the mounting hole.
2. The hydraulic diaphragm pump of claim 1, wherein the control assembly comprises a port plate rotatably connected in the mounting hole, a connecting hole is formed in the port plate along the axial direction of the piston rod, and the piston rod is slidably connected in the connecting hole; a left control cavity is formed between the left diaphragm and the left end cover in the left pump shell, and a right control cavity is formed between the right diaphragm and the right end cover in the right pump shell; the side surface of the circumference of the valve plate is provided with a first fan ring groove and a second fan ring groove which have the same included angle, and the distance between two arcs of the second fan ring groove is greater than the distance between two arcs of the first fan ring groove; a first blocking piece extending into the first circular groove and a second blocking piece extending into the second circular groove are arranged on the inner side wall of the mounting hole along the radial direction of the mounting hole;
when the first baffle plate is positioned at one end of the first fan ring groove, the P port is communicated with the right control cavity, and the T port is communicated with the left control cavity; when the first blocking piece is positioned at the other end of the first fan ring groove, the P port is communicated with the left control cavity, and the T port is communicated with the right control cavity.
3. The hydraulic diaphragm pump of claim 2, wherein the left end cap is provided with a left oil hole and a left oil hole for communicating the left control chamber with the mounting hole, and the right end cap is provided with a right oil hole and a right oil hole for communicating the right control chamber with the mounting hole; the valve plate is provided with a first oil inlet hole matched with the P port and the right oil hole, a second oil inlet hole matched with the P port and the left oil hole, a first oil return hole matched with the T port and the left oil hole, and a second oil return hole matched with the T port and the right oil hole; when the first baffle plate is positioned at one end of the first fan ring groove, the P port is communicated with the right oil hole through the first oil inlet hole, and the T port is communicated with the left oil hole and the right oil hole through the first oil return hole; when the first separation blade is located the other end of first fan annular groove, P mouth passes through second inlet port and the first oilhole intercommunication of left side, and the T mouth passes through second oil gallery and the intercommunication of two oilholes on the right side.
4. The hydraulic diaphragm pump of claim 3 wherein the first baffle divides the first fan ring groove into a first control chamber and a second control chamber and the second baffle divides the second fan ring groove into a third control chamber and a fourth control chamber; first oil holes (1c, 1g) for communicating the P port with the first control cavity, second oil holes (1f, 1d) for communicating the second control cavity with the T port, and third oil holes (1i, 1e) for communicating the fourth control cavity with the T port are formed in the pump body;
a left sliding hole for the piston rod to pass through is formed in the left end cover, and a right sliding hole for the piston rod to pass through is formed in the right end cover; fourth oil holes (1h, 2d, 2e) for communicating the first oil hole with the left sliding hole are formed in the pump body and the left end cover, fifth oil holes (2f, 2g, 1j, 3d, 3e) for communicating the left sliding hole with the right sliding hole are formed in the pump body, the left end cover and the right end cover, and eighth oil holes (1k) for communicating the third control cavity with the fifth oil holes are formed in the pump body; an annular groove taking the piston rod as the center of a circle is arranged on the side surface of the valve plate facing to the right end cover, and a sixth oil hole (3f) used for communicating the annular groove and the right sliding hole is arranged in the right end cover; a seventh oil hole (4j, 4i) used for communicating the annular groove and the second oil return hole is formed in the valve plate, and an arc-shaped groove (4k) used for communicating the first oil return hole and the second oil return hole is formed in the side face of the outer circumference of the valve plate; the left end cover is provided with a damping hole for communicating the fifth oil hole with the left control cavity;
the piston rod is provided with a left annular groove at the position close to the left end and a right annular groove at the position close to the right end on the outer circumferential side surface of the piston rod, when the piston rod moves rightwards to the limit position, the fourth oil hole and the fifth oil hole are communicated through the left annular groove, and when the piston rod moves leftwards to the limit position, the fifth oil hole and the sixth oil hole are communicated through the right annular groove.
5. The hydraulic diaphragm pump of claim 2, wherein the first catch has a first groove at an end thereof remote from an inner wall of the mounting hole, and a first sealing piece is disposed in the first groove; and a second clamping groove is formed in one end, far away from the inner side wall of the mounting hole, of the second blocking piece, and a second sealing sheet is arranged in the second clamping groove.
6. The hydraulic diaphragm pump of claim 1, wherein a liquid inlet header pipe is arranged between the left liquid inlet pipe and the right liquid inlet pipe, and a liquid inlet is arranged on the liquid inlet header pipe; a liquid outlet main pipe is arranged between the left liquid outlet pipe and the right liquid outlet pipe, and a liquid outlet is formed in the liquid outlet main pipe.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911398283.9A CN111120279B (en) | 2019-12-30 | 2019-12-30 | Hydraulic diaphragm pump |
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| CN201911398283.9A CN111120279B (en) | 2019-12-30 | 2019-12-30 | Hydraulic diaphragm pump |
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| CN111120279A true CN111120279A (en) | 2020-05-08 |
| CN111120279B CN111120279B (en) | 2022-12-09 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112426984A (en) * | 2020-11-16 | 2021-03-02 | 台州智子科技有限公司 | Microreactor with bamboo-shaped microstructure |
| CN114382682A (en) * | 2022-01-24 | 2022-04-22 | 枣庄学院 | Double-resonance plunger pump |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60104785A (en) * | 1983-11-09 | 1985-06-10 | Yamada Yuki Seizo Kk | Diaphragm pump |
| CN2057470U (en) * | 1989-09-19 | 1990-05-23 | 核工业第四研究设计院 | Fluid driven diaphragm pump |
| CN102086860A (en) * | 2009-12-03 | 2011-06-08 | 山田株式会社 | Valve body for pumps |
| CN206972489U (en) * | 2017-04-19 | 2018-02-06 | 浙江德清科赛塑料制品有限公司 | Membrane pump |
| CN209261782U (en) * | 2018-09-17 | 2019-08-16 | 孙成井 | A kind of pneumatic automatic reversing mechanism |
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2019
- 2019-12-30 CN CN201911398283.9A patent/CN111120279B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60104785A (en) * | 1983-11-09 | 1985-06-10 | Yamada Yuki Seizo Kk | Diaphragm pump |
| CN2057470U (en) * | 1989-09-19 | 1990-05-23 | 核工业第四研究设计院 | Fluid driven diaphragm pump |
| CN102086860A (en) * | 2009-12-03 | 2011-06-08 | 山田株式会社 | Valve body for pumps |
| CN206972489U (en) * | 2017-04-19 | 2018-02-06 | 浙江德清科赛塑料制品有限公司 | Membrane pump |
| CN209261782U (en) * | 2018-09-17 | 2019-08-16 | 孙成井 | A kind of pneumatic automatic reversing mechanism |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112426984A (en) * | 2020-11-16 | 2021-03-02 | 台州智子科技有限公司 | Microreactor with bamboo-shaped microstructure |
| CN114382682A (en) * | 2022-01-24 | 2022-04-22 | 枣庄学院 | Double-resonance plunger pump |
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| Publication number | Publication date |
|---|---|
| CN111120279B (en) | 2022-12-09 |
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Denomination of invention: A hydraulic diaphragm pump Effective date of registration: 20230427 Granted publication date: 20221209 Pledgee: Postal Savings Bank of China Limited Xiamen Jimei District Sub-branch Pledgor: XIAMEN MICRO ENERGY ELECTRONIC TECHNOLOGY Co.,Ltd. Registration number: Y2023980039360 |
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