CN111843448B - Automatic nozzle replacing device for flow measurement of positive displacement compressor - Google Patents
Automatic nozzle replacing device for flow measurement of positive displacement compressor Download PDFInfo
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- CN111843448B CN111843448B CN202010761704.6A CN202010761704A CN111843448B CN 111843448 B CN111843448 B CN 111843448B CN 202010761704 A CN202010761704 A CN 202010761704A CN 111843448 B CN111843448 B CN 111843448B
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- flow measurement
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- 238000005259 measurement Methods 0.000 title claims abstract description 15
- 238000006073 displacement reaction Methods 0.000 title abstract description 8
- 230000000712 assembly Effects 0.000 claims abstract description 7
- 238000000429 assembly Methods 0.000 claims abstract description 7
- 230000007704 transition Effects 0.000 claims description 11
- 230000008859 change Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Measuring Arrangements Characterized By The Use Of Fluids (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention provides an automatic nozzle replacing device for flow measurement of a positive displacement compressor, which is characterized in that nozzles used by a measuring system are uniformly distributed on a circular chassis, the selected nozzles and positions are confirmed through a photoelectric switch, the circular chassis is driven to rotate by a rack and pinion device to realize nozzle replacement, and a cylinder is adopted to press to realize connection of the nozzles and a connecting surface of the measuring system. The nozzle assemblies are uniformly distributed on the nozzle mounting disc, the selected nozzles and positions are confirmed through the photoelectric switch and the position sensing block, the nozzle mounting disc is driven to rotate by the rack and pinion device to realize nozzle replacement, the connection between the nozzles and the connecting surface of a measuring system is realized by adopting air cylinder compression, manual participation and shutdown waiting are not needed in the replacement process of the nozzles during flow measurement of the compressor, and the working efficiency and the measuring stability are greatly improved.
Description
Technical Field
The invention relates to a flow measuring system of a positive displacement compressor, in particular to an automatic nozzle replacing device for flow measurement of the positive displacement compressor.
Background
At present, need artifical the change measurement system nozzle when carrying out positive displacement compressor flow measurement, the nozzle mainly leans on bolted connection in the system, and manual operation is loaded down with trivial details, and is consuming time long, and changes after need shutting down, can't keep the stability of measuring condition, greatly reduced work efficiency.
Disclosure of Invention
Aiming at the problems of the existing measuring system, the invention provides an automatic nozzle replacing device for flow measurement of a positive displacement compressor, which can automatically replace a nozzle without stopping the machine, reduce the replacing time and achieve the purposes of maintaining the stability of measuring conditions and improving the working efficiency.
The technical idea of the invention is as follows: the nozzles used by the measuring system are uniformly distributed on the circular chassis, the selected nozzles and positions are confirmed through the photoelectric switch, the gear rack device drives the circular chassis to rotate to realize nozzle replacement, and the air cylinder is adopted to compress to realize connection of the nozzle and the connecting surface of the measuring system.
Based on the technical concept, the technical scheme of the invention is as follows: the utility model provides an automatic device of changing of nozzle for volumetric compressor flow measurement, includes fixed bolster, nozzle assembly, nozzle mounting disc, connecting axle, and the fixed bolster is equipped with the centre bore, and the connecting axle cover is equipped with plane thrust bearing in the centre bore of fixed bolster, and the nozzle mounting disc cover is equipped with plane thrust bearing on the connecting axle between nozzle mounting disc and the fixed bolster, and the nozzle mounting disc can rotate its characterized in that around the connecting axle: the nozzle assembly comprises a plurality of nozzle assemblies, a nozzle mounting plate, a plurality of positioning sensing blocks and a plurality of positioning sensing blocks, wherein the plurality of nozzle assemblies are uniformly distributed and mounted on the nozzle mounting plate along the circumference; the side edge of the fixed support is connected with an air cylinder fixing frame in an extending mode, the air cylinder fixing frame is connected with a first air cylinder, and the first air cylinder is used for pressing a nozzle of the nozzle assembly on a connecting surface of a measuring system; the cylinder fixing frame is connected with a position pointer;
the gear is sleeved on the connecting shaft through a bearing in an empty way and is fixedly connected with the nozzle mounting disc through a middle sleeve; a middle bracket is fixedly connected with the connecting shaft, a second cylinder is arranged on the side part of the middle bracket, a rack is connected to a piston of the second cylinder, a limit screw is arranged at the end part of the middle bracket far away from the second cylinder, and the rack is meshed with the gear; a ratchet wheel is embedded in the gear, so that unidirectional rotation is guaranteed when the second cylinder pushes, and unidirectional continuous change of the position of the nozzle assembly is realized;
the initial position is aligned with the scribe line on the nozzle mounting plate by a position pointer, and a photoelectric switch is connected to the intermediate bracket, and the selected nozzle assembly and position are confirmed by the photoelectric switch.
The technical scheme is further limited as follows: a set of position response piece is a plurality of, and photoelectric switch corresponds also for a plurality of, does benefit to and improves signal induction effect, further guarantees signal induction's reliability.
The technical scheme is further limited as follows: the nozzle assembly comprises a nozzle, a nozzle seat, a guide sleeve, a clamp spring, a guide post and a transition sleeve, wherein the guide sleeve is connected with a nozzle mounting disc through the clamp spring; the structure can ensure the reliable movement and reset of the nozzle.
The invention has the beneficial effects that: with nozzle unit equipartition on the nozzle mounting disc, confirm selected nozzle and position through photoelectric switch, position response piece, drive the rotatory nozzle change that realizes of nozzle mounting disc by gear rack device, adopt the cylinder to compress tightly to realize that nozzle and measurement system are connected the face being connected, the change process of nozzle need not artifical participation and shut down the waiting when carrying out compressor flow measurement, improves work efficiency and measuring stability greatly.
Drawings
Fig. 1 is a front view of the present invention.
Fig. 2 is a right side view of the present invention.
FIG. 3 is a schematic view of the structure and installation of the nozzle assembly of the present invention.
Shown in the figure: 1. the novel nozzle assembly comprises a fixed support, 2, a position pointer, 3, a first air cylinder, 4, a gear, 5, an intermediate support, 6, a photoelectric switch, 7, a plane thrust bearing, 8, a nozzle mounting disc, 9, a rack, 10, a position sensing block, 11, a nozzle assembly, 12, a connecting shaft, 13, a limiting screw, 14, a second air cylinder, 15, a nozzle seat, 16, a guide sleeve, 17, a snap spring, 18, a spring, 19, a guide column, 20, a transition sleeve and 21, a nozzle.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1 and 2, an automatic nozzle replacement device for flow measurement of a positive displacement compressor comprises a fixed support 1, nozzle assemblies 11, a nozzle mounting disc 8 and a connecting shaft 12, wherein the fixed support 1 is provided with a central hole, the connecting shaft 12 is sleeved in the central hole of the fixed support, the nozzle mounting disc 8 is sleeved on the connecting shaft, a planar thrust bearing 7 is arranged between the nozzle mounting disc 8 and the fixed support 1, the nozzle mounting disc 8 can rotate around the connecting shaft 12, a plurality of nozzle assemblies 11 are uniformly arranged on the nozzle mounting disc 8 along the circumference, position sensing blocks 10 are uniformly arranged on the nozzle mounting disc 8, and each nozzle assembly 11 corresponds to one group of position sensing blocks 10; the side edge of the fixed support is connected with an air cylinder fixing frame 1-1 in an extending mode, the air cylinder fixing frame 1-1 is connected with a first air cylinder 3, and the first air cylinder 3 is used for pressing a nozzle of the nozzle assembly on a connecting surface of a measuring system; the cylinder fixing frame is connected with a position pointer 2;
the gear 4 (with a ratchet wheel) is sleeved on the connecting shaft 12 through a bearing in an empty way, and the gear 4 is fixedly connected with the nozzle mounting plate 10 through a middle sleeve; a middle bracket 5 is fixedly connected with a connecting shaft 12, a second air cylinder 14 is arranged on the side part of the middle bracket, a rack 9 is connected on a piston of the second air cylinder, a limit screw 13 is arranged at the end part of the middle bracket far away from the second air cylinder, and the rack 9 is meshed with the gear 4; a ratchet wheel is embedded in the gear 4, so that unidirectional rotation is ensured when the second cylinder 14 pushes, and unidirectional continuous change of the position of the nozzle assembly 11 is realized;
the initial position is aligned with the scribe line on the nozzle mounting plate by the position indicator 2, the photoelectric switch 6 is connected to the intermediate support 5, and the selected nozzle assembly and position are confirmed by the photoelectric switch 6.
As shown in fig. 1 and 2, a plurality of position sensing blocks 10 are provided, and a plurality of corresponding photoelectric switches 6 are provided, which is beneficial to improving the signal sensing effect and further ensuring the reliability of signal sensing.
As shown in fig. 3, the nozzle assembly includes a nozzle 21, a nozzle holder 15, a guide sleeve 16, a snap spring 17, a spring 18, a guide post 19, and a transition sleeve 20, the guide sleeve 16 is connected with the nozzle mounting plate through the snap spring 17, the nozzle 21 is fixedly connected with the nozzle holder 15, the nozzle holder 15 is fixedly connected with the transition sleeve 20, the guide post 19 and the guide sleeve 16 form a sliding fit, and the spring 18 is sleeved on the guide post 19 and used as a return spring of the nozzle, the nozzle holder and the transition sleeve assembly; the structure can ensure the reliable movement and reset of the nozzle.
In the invention, the selection of the nozzle: each nozzle assembly corresponds to a set of position sensing signals and the initial position is determined by the alignment of the position indicator 2 with the scribe line on the nozzle base plate. After the nozzle assembly is selected, detecting position signals of a current nozzle and a target nozzle through a photoelectric switch, and controlling the operation times of a second cylinder; the second cylinder promotes the rack, and then promotes the gear and rotate around the connecting axle, guarantees through stop screw that the second cylinder moves gear rotation once, and the embedded ratchet of gear is rotatory when guaranteeing that the second cylinder promotes, and the nozzle position is unchangeable during the withdrawal, realizes 11 unidirectional continuous transform in position of nozzle assembly.
In the invention, the nozzle is pressed and loosened: when the nozzle is selected to reach the designated position, the first cylinder is pushed out to press the end face of the transition sleeve of the nozzle assembly, the nozzle is pressed on the connecting face of the measuring system by overcoming the elastic force of the spring, when the nozzle needs to be replaced, the first cylinder retracts, the spring elastic force pushes the transition sleeve and the nozzle above the transition sleeve away from the connecting face of the measuring system, and manual participation and shutdown waiting are not needed in the replacement process of the nozzle when the nozzle is pressed and separated to carry out compressor flow measurement.
Claims (2)
1. The utility model provides an automatic device of changing of nozzle for volumetric compressor flow measurement, includes fixed bolster, nozzle assembly, nozzle mounting disc, connecting axle, and the fixed bolster is equipped with the centre bore, and the connecting axle cover is equipped with plane thrust bearing in the centre bore of fixed bolster, and the nozzle mounting disc cover is equipped with plane thrust bearing on the connecting axle between nozzle mounting disc and the fixed bolster, and the nozzle mounting disc can rotate its characterized in that around the connecting axle: the nozzle assembly comprises a plurality of nozzle assemblies, a nozzle mounting plate, a plurality of positioning sensing blocks and a plurality of positioning sensing blocks, wherein the plurality of nozzle assemblies are uniformly distributed and mounted on the nozzle mounting plate along the circumference; the side edge of the fixed support is connected with an air cylinder fixing frame in an extending mode, the air cylinder fixing frame is connected with a first air cylinder, and the first air cylinder is used for pressing a nozzle of the nozzle assembly on a connecting surface of a measuring system; the cylinder fixing frame is connected with a position pointer;
the gear is sleeved on the connecting shaft through a bearing in an empty way and is fixedly connected with the nozzle mounting disc through a middle sleeve; a middle bracket is fixedly connected with the connecting shaft, a second cylinder is arranged on the side part of the middle bracket, a rack is connected to a piston of the second cylinder, a limit screw is arranged at the end part of the middle bracket far away from the second cylinder, and the rack is meshed with the gear; a ratchet wheel is embedded in the gear, so that unidirectional rotation is guaranteed when the second cylinder pushes, and unidirectional continuous change of the position of the nozzle assembly is realized;
the initial position is aligned with a scribed line on the nozzle mounting disc by a position pointer, a photoelectric switch is connected on the middle bracket, and the selected nozzle assembly and the position are confirmed by the photoelectric switch;
the nozzle assembly comprises a nozzle, a nozzle seat, a guide sleeve, a clamp spring, a guide post and a transition sleeve, wherein the guide sleeve is connected with a nozzle mounting disc through the clamp spring, the nozzle is fixedly connected with the nozzle seat, the nozzle seat is fixedly connected with the transition sleeve, the guide post and the guide sleeve form sliding fit, and the spring is sleeved on the guide post and used as a reset spring of a nozzle, a nozzle seat and a transition sleeve assembly.
2. An automatic nozzle exchange device for volumetric compressor flow measurement according to claim 1, characterized in that: a plurality of position sensing blocks are arranged, and a plurality of photoelectric switches are correspondingly arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010761704.6A CN111843448B (en) | 2020-07-31 | 2020-07-31 | Automatic nozzle replacing device for flow measurement of positive displacement compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010761704.6A CN111843448B (en) | 2020-07-31 | 2020-07-31 | Automatic nozzle replacing device for flow measurement of positive displacement compressor |
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| Publication Number | Publication Date |
|---|---|
| CN111843448A CN111843448A (en) | 2020-10-30 |
| CN111843448B true CN111843448B (en) | 2022-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010761704.6A Active CN111843448B (en) | 2020-07-31 | 2020-07-31 | Automatic nozzle replacing device for flow measurement of positive displacement compressor |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114799585B (en) * | 2022-06-14 | 2024-02-02 | 广东宏石激光技术股份有限公司 | Automatic cleaning, detecting and nozzle changing device for laser cutting machine |
| CN116810350A (en) * | 2023-08-25 | 2023-09-29 | 湖南蓝天智能装备科技有限公司 | Welding robot contact tip replacement device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61172662A (en) * | 1985-01-25 | 1986-08-04 | Kawasaki Heavy Ind Ltd | Nozzle exchanging device |
| JPS62197275A (en) * | 1986-02-25 | 1987-08-31 | Koike Sanso Kogyo Co Ltd | Plasma cutting equipment provided with automatic nozzle replacing device |
| JPH06216596A (en) * | 1993-01-19 | 1994-08-05 | Yamaha Motor Co Ltd | Nozzle exchange device in packaging machine |
| CN103143846A (en) * | 2013-03-20 | 2013-06-12 | 江苏扬力数控机床有限公司 | Automatic turret-type nozzle replacing device of laser cutting machine |
| CN108127268A (en) * | 2017-12-26 | 2018-06-08 | 济南邦德激光股份有限公司 | It is a kind of that there is the automatic laser machine and system for replacing nozzle |
| CN109807480A (en) * | 2019-03-19 | 2019-05-28 | 武汉华俄激光工程有限公司 | A kind of automatic replacement laser cutting head nozzle device |
| CN209424762U (en) * | 2018-12-29 | 2019-09-24 | 济南邦德激光股份有限公司 | A kind of laser cutting machine tool replaces spray nozzle device automatically |
| CN209615215U (en) * | 2018-12-19 | 2019-11-12 | 南昌航空大学 | A kind of more changing device of automatically replaceable nozzle |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008041855A (en) * | 2006-08-04 | 2008-02-21 | Juki Corp | Component mounting machine and nozzle replacement device thereof |
| DE502008000686D1 (en) * | 2008-04-09 | 2010-07-01 | Bystronic Laser Ag | Apparatus and method for automatically changing cutting nozzles |
-
2020
- 2020-07-31 CN CN202010761704.6A patent/CN111843448B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61172662A (en) * | 1985-01-25 | 1986-08-04 | Kawasaki Heavy Ind Ltd | Nozzle exchanging device |
| JPS62197275A (en) * | 1986-02-25 | 1987-08-31 | Koike Sanso Kogyo Co Ltd | Plasma cutting equipment provided with automatic nozzle replacing device |
| JPH06216596A (en) * | 1993-01-19 | 1994-08-05 | Yamaha Motor Co Ltd | Nozzle exchange device in packaging machine |
| CN103143846A (en) * | 2013-03-20 | 2013-06-12 | 江苏扬力数控机床有限公司 | Automatic turret-type nozzle replacing device of laser cutting machine |
| CN108127268A (en) * | 2017-12-26 | 2018-06-08 | 济南邦德激光股份有限公司 | It is a kind of that there is the automatic laser machine and system for replacing nozzle |
| CN209615215U (en) * | 2018-12-19 | 2019-11-12 | 南昌航空大学 | A kind of more changing device of automatically replaceable nozzle |
| CN209424762U (en) * | 2018-12-29 | 2019-09-24 | 济南邦德激光股份有限公司 | A kind of laser cutting machine tool replaces spray nozzle device automatically |
| CN109807480A (en) * | 2019-03-19 | 2019-05-28 | 武汉华俄激光工程有限公司 | A kind of automatic replacement laser cutting head nozzle device |
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| CN111843448A (en) | 2020-10-30 |
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