CN116201718B - Upper and lower membrane head structure assembly of diaphragm compressor - Google Patents
Upper and lower membrane head structure assembly of diaphragm compressor Download PDFInfo
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- CN116201718B CN116201718B CN202310392074.3A CN202310392074A CN116201718B CN 116201718 B CN116201718 B CN 116201718B CN 202310392074 A CN202310392074 A CN 202310392074A CN 116201718 B CN116201718 B CN 116201718B
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- membrane head
- distribution disc
- oil distribution
- head
- lower membrane
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- 239000012528 membrane Substances 0.000 title claims abstract description 125
- 238000009826 distribution Methods 0.000 claims abstract description 84
- 238000003825 pressing Methods 0.000 claims abstract description 67
- 230000007246 mechanism Effects 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims description 31
- 230000006835 compression Effects 0.000 claims description 18
- 238000007906 compression Methods 0.000 claims description 18
- 238000001514 detection method Methods 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 abstract description 5
- 239000003921 oil Substances 0.000 description 97
- 230000009471 action Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification 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
- F04B45/00—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids
- F04B45/04—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having plate-like flexible members, e.g. diaphragms
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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
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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
- F04B39/14—Provisions for readily assembling or disassembling
-
- 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
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/02—Stopping, starting, unloading or idling control
- F04B49/03—Stopping, starting, unloading or idling control by means of valves
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
Abstract
The upper membrane head and lower membrane head structure assembly of the diaphragm compressor comprises an upper membrane head, an oil distribution disc and a lower membrane head, wherein a diaphragm is arranged between the upper membrane head and the oil distribution disc, the oil distribution disc and the lower membrane head are of split structures, the oil distribution disc and the lower membrane head are fixed through a rotary pressing mechanism, an oil cavity which is inwards concave is arranged on the end face, close to the oil distribution disc, of the lower membrane head, and an overflow valve which is communicated with the oil cavity is arranged on the side part of the lower membrane head; the upper end face edge of the oil distribution disc is provided with at least three grooves along the circumference, elastic locating pins are respectively placed in each groove, the upper ends of the elastic locating pins extend to the upper side of the grooves to be in contact fit with the upper membrane head, and the membrane is placed between the elastic locating pins to be located. The oil distribution disc is pressed and fixed through the eccentric pressing block by the pressing screw, the disassembly and the assembly are convenient and quick, the design of the oil cavity reduces the processing design difficulty and the manufacturing cost, the diaphragm is positioned through the elastic positioning pin, the processing technology is simplified, the requirement on the dimensional accuracy is reduced, and the manufacturing cost is reduced.
Description
Technical field:
The invention relates to an upper and lower membrane head structure assembly of a membrane compressor.
The background technology is as follows:
In diaphragm compressors, the lower head is provided with an oil distribution pan for distributing the hydraulic oil evenly throughout the die cavity. At present, the mounting modes of the lower film head and the oil distribution disc are mainly two, one is integrally formed, and the defect of the integral forming is that the processing difficulty is too high and the cost is high; the other is fixedly connected through bolts, and has the defects of troublesome disassembly and assembly and easy and not tight sealing. In addition, a plurality of flow passages are required to be opened in the lower membrane head along the axial direction and the radial direction and used for supplying and circulating hydraulic oil to the oil distribution disc, the processing technology is complex, and particularly, some radial passage holes are too deep and difficult to process, so that the manufacturing cost is greatly increased.
In the diaphragm compressor, the diaphragm is arranged between the oil distribution disc and the upper diaphragm head, and when the diaphragm is arranged, the diaphragm is required to be positioned first, and then the edge of the diaphragm is fixed by the pressing force between the oil distribution disc and the upper diaphragm head. At present, when the diaphragm is positioned, at least three positioning bolts are required to be uniformly arranged on the oil distribution disc along the circumference, the diaphragm is positioned through the three positioning bolts, and meanwhile, a reserved hole is required to be formed in the position, corresponding to each positioning bolt, of the lower end face of the upper diaphragm head, so that the positioning bolts can be arranged in the reserved hole when the oil distribution disc is in butt joint with the upper diaphragm head, the tight contact between the oil distribution disc and the upper diaphragm head is ensured, the positioning mode of the diaphragm is complex in processing technology, the requirement on dimensional accuracy is high, and the manufacturing cost is increased.
When the diaphragm compressor works, the pressure difference between the air cavity of the upper diaphragm head and the oil cavity of the lower diaphragm head cannot reach a balance point at the same time, so that the oil cavity is required to be decompressed and protected by arranging an overflow valve, and the diaphragm is prevented from being compressed and damaged. The existing overflow valve is poor in locking effect, after the overflow pressure is set, after the overflow valve is frequently subjected to oil pressure impact after long-time use, the parts are easy to displace, so that the overflow pressure is changed, overflow cannot occur when the actual oil pressure reaches the set pressure, overflow can occur when the actual oil pressure exceeds the set pressure, the overflow pressure relief protection effect is poor, the diaphragm can be subjected to great stress, and the service life of the diaphragm is reduced.
In view of the above, the above problems of the diaphragm compressor have become a technical problem to be solved in the industry.
The invention comprises the following steps:
The invention provides an upper membrane head and lower membrane head structure assembly of a membrane compressor, which solves the problems of large difficulty, high cost and troublesome disassembly and assembly when an oil distribution disc and a lower membrane head are installed, solves the problems of complex flow path, large processing difficulty and high cost in the lower membrane head, and solves the problems of complex positioning process and high manufacturing cost when a membrane is positioned by a positioning bolt in the past.
The technical scheme adopted by the invention for solving the technical problems is as follows:
The upper membrane head and lower membrane head structure assembly of the diaphragm compressor comprises an upper membrane head, an oil distribution disc and a lower membrane head, wherein a diaphragm is arranged between the upper membrane head and the oil distribution disc, the oil distribution disc and the lower membrane head are of split structures, the oil distribution disc and the lower membrane head are fixed through a rotary pressing mechanism, an oil cavity which is inwards concave is arranged on the end face, close to the oil distribution disc, of the lower membrane head, and an overflow valve which is communicated with the oil cavity is arranged on the side part of the lower membrane head; the edge of the upper end face of the oil distribution disc is provided with at least three grooves along the circumference, each groove is internally provided with an elastic locating pin, the upper end of each elastic locating pin extends to the upper side of the corresponding groove to be in contact fit with the upper membrane head, the membrane is placed between the elastic locating pins to be located, and the edge of the membrane is fixed through the pressing force between the oil distribution disc and the upper membrane head.
The rotary pressing mechanism comprises a plurality of pressing grooves formed in the outer circular side wall of the oil distribution disc, a rotatable eccentric pressing block is arranged on the outer side of each pressing groove and fixedly connected with the lower film head through a pressing screw, one side of each eccentric pressing block extends into each pressing groove to press and fix the oil distribution disc, each eccentric pressing block is in clearance fit with the corresponding pressing groove, a unthreaded hole is formed in each eccentric pressing block, the eccentric pressing blocks freely rotate around the corresponding pressing screw, and the corresponding pressing screw penetrates through the corresponding unthreaded hole and is in threaded connection with the lower film head.
The upper end face of the lower membrane head is provided with a clamping groove matched with the oil distribution disc in shape, the oil distribution disc is clamped in the clamping groove, and an O-shaped sealing ring is arranged between the oil distribution disc and the lower membrane head and positioned at the outer side of the oil cavity.
The oil cavity is frustum-shaped, the oil cavity is communicated with an oil channel in the oil distribution disc, a plurality of support columns are arranged between the oil distribution disc and the lower membrane head in the oil cavity, two ends of each support column are respectively in contact fit with the oil distribution disc and the lower membrane head, counter bores are formed in the support columns, and support screws penetrate through the counter bores and are in threaded connection with the lower membrane head.
The elastic locating pin comprises a sleeve, a screwed plug is connected to the bottom end of the sleeve in a threaded manner, a pin column is arranged on the top end of the sleeve in a sliding manner, a spring is arranged between the screwed plug and the pin column in the sleeve, a limiting part matched with the sleeve is arranged at the bottom end of the pin column, a sealing ring groove is formed in the outer side of the sleeve, and a sealing ring is arranged in the sealing ring groove.
The position between the oil distribution disc and the upper membrane head, which is positioned at the edge of the membrane, is provided with a plurality of O-shaped sealing rings, the oil distribution disc between two adjacent O-shaped sealing rings and the upper membrane head are provided with annular leakage detection grooves, and the positions of the elastic positioning pins and the annular leakage detection grooves are aligned.
The overflow valve comprises an outer sleeve and an inner core, wherein the outer sleeve and the inner core are connected through threads, an overflow channel is arranged in the center of the inner core, an overflow piston is arranged between the top of the inner core and the outer sleeve, a conical head is arranged at the bottom of the overflow piston, the conical head is matched with the overflow channel to realize the sealing or opening of the overflow channel, a compression spring is arranged between the top of the overflow piston and the top of the outer sleeve, an overflow port is arranged at the top of the outer sleeve, a locking nut is arranged at the outer side of the inner core in a threaded manner, and a locking screw is arranged in the side wall of the locking nut.
The bottom of inner core is equipped with flange, and flange's bottom is equipped with the cover and establishes the fixed washer on the inner core, the bottom of inner core is equipped with the external screw thread that is connected with lower membrane head.
The top of overflow mouth is connected with the elbow, the top of overflow piston is equipped with the spring mounting groove, the inside of overflow piston is equipped with the traction screw hole.
A locking washer sleeved outside the inner core is arranged between the bottom of the outer sleeve and the locking nut, and a sealing ring is arranged between the outer sleeve and the inner core.
The invention adopts the scheme and has the following advantages:
Through set up a plurality of indent in the outer circular lateral wall of joining in marriage the food tray, set up rotatable eccentric briquetting in the outside of indent, when the eccentric briquetting was rotatory outside the indent, join in marriage the food tray unrestricted, can freely dismouting, when the eccentric briquetting was rotatory to in the indent, accessible hold-down screw passed the eccentric briquetting and compresses tightly the food tray and fix, easy dismounting is swift. The oil cavity which is concave inwards is formed in the end face, close to the oil distribution disc, of the lower membrane head, so that the axial flow channel and the radial flow channel in the past are replaced, and the processing design difficulty and the manufacturing cost are reduced.
Through placing the elastic locating pin in the recess at oil distribution dish up end edge, fix a position the diaphragm through the elastic locating pin, go up the membrane head and directly compress tightly fixedly diaphragm and elastic locating pin, need not to offer extra preformed hole at last membrane head, simplified processing technology, reduced the dimensional accuracy requirement, reduced manufacturing cost.
Through setting up compression spring and overflow piston in the overcoat of overflow valve, seal or open the overflow passageway of inner core through the conical head of overflow piston, then upwards promote overflow piston and remove when the oil pressure of membrane head oil pocket surpasses compression spring elasticity and open the overflow passageway, then overflow piston closes the overflow passageway when the oil pressure of membrane head oil pocket is less than compression spring elasticity, through the position of adjusting the overcoat on the inner core in order to adjust compression spring's compression degree, thereby adjust overflow pressure, lock the position of overcoat on the inner core through lock nut and locking screw, avoid the overcoat to take place the displacement and lead to overflow pressure to change, guaranteed overflow pressure release effect, thereby play effectual guard action to the diaphragm.
Description of the drawings:
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic cross-sectional view of the present invention.
Fig. 3 is a schematic longitudinal sectional view of the present invention.
Fig. 4 is a schematic perspective view of the oil distribution plate and lower film head of the present invention.
Fig. 5 is a schematic structural diagram of the elastic positioning pin for positioning the membrane.
Fig. 6 is a schematic cross-sectional enlarged structure of the elastic positioning pin of the present invention.
Fig. 7 is a schematic enlarged sectional view of the relief valve of the present invention.
In the figure, 1, an upper membrane head, 2, an oil distribution disc, 3, a lower membrane head, 4, a membrane, 5, an oil cavity, 6, an overflow valve, 7, an elastic locating pin, 8, a pressing groove, 9, an eccentric pressing block, 10, a pressing screw, 11, an O-shaped sealing ring, 12, a supporting column, 13, a supporting screw, 14, a sleeve, 15, a plug, 16, a pin, 17, a spring, 18, a limiting part, 19, a sealing ring, 20, an annular leakage detection groove, 21, an outer sleeve, 22, an inner core, 23, an overflow channel, 24, an overflow piston, 25, a conical head, 26, a compression spring, 27, an overflow port, 28, a locking nut, 29, a locking screw, 30, a fixing flange, 31, a fixing washer, 32, an elbow, 33, a traction threaded hole, 34 and a locking washer.
The specific embodiment is as follows:
In order to clearly illustrate the technical features of the present solution, the present invention will be described in detail below with reference to the following detailed description and the accompanying drawings.
As shown in fig. 1-7, the upper and lower membrane head structure assembly of the membrane compressor comprises an upper membrane head 1, an oil distribution disc 2 and a lower membrane head 3, wherein a membrane 4 is arranged between the upper membrane head 1 and the oil distribution disc 2, the oil distribution disc 2 and the lower membrane head 3 are of a split structure, the oil distribution disc 2 and the lower membrane head 3 are fixed through a rotary compression mechanism, an oil cavity 5 which is inwards concave is arranged on the end surface of the lower membrane head 3, which is close to the oil distribution disc 2, so that the processing design difficulty and the manufacturing cost are reduced, and an overflow valve 6 which is communicated with the oil cavity 5 is arranged on the side part of the lower membrane head 3; the edge of the upper end face of the oil distribution disc 2 is provided with at least three grooves along the circumference, each groove is internally provided with an elastic locating pin 7, the upper end of each elastic locating pin 7 extends to the upper side of the corresponding groove to be in contact fit with the upper membrane head 1, the membrane 4 is placed between the elastic locating pins 7 to be located, and the edge of the membrane 4 is fixed through the pressing force between the oil distribution disc 2 and the upper membrane head 1.
The rotary pressing mechanism comprises a plurality of pressing grooves 8 arranged in the outer circular side wall of the oil distribution disc 2, a rotatable eccentric pressing block 9 is arranged on the outer side of the pressing grooves 8, the eccentric pressing block 9 is fixedly connected with the lower membrane head 3 through a pressing screw 10, one side of the eccentric pressing block 9 extends into the pressing grooves 8 to press and fix the oil distribution disc 2, the eccentric pressing block 9 is in clearance fit with the pressing grooves 8, the eccentric pressing block 9 is convenient to enter and exit in the pressing grooves 8, a unthreaded hole is formed in the eccentric pressing block 9, the eccentric pressing block 9 freely rotates around the pressing screw 10, and the pressing screw 10 penetrates through the unthreaded hole and is in threaded connection with the lower membrane head 3. When the eccentric pressing block 9 rotates out of the pressing groove 8, the oil distribution disc 2 is not limited and can be freely disassembled, and when the eccentric pressing block 9 rotates into the pressing groove 8, the oil distribution disc 2 can be fixed by tightening the pressing screw 10.
The upper end face of the lower membrane head 3 is provided with a clamping groove matched with the oil distribution disc 2 in shape, the oil distribution disc 2 is clamped in the clamping groove, and an O-shaped sealing ring 11 is arranged between the oil distribution disc 2 and the lower membrane head 3 and positioned at the outer side of the oil cavity 5 to seal the oil cavity 5.
The oil cavity 5 is frustum-shaped, the oil cavity 5 is communicated with an oil channel in the oil distribution disc 2, a plurality of support columns 12 are arranged between the oil distribution disc 2 and the lower membrane head 3 in the oil cavity 5, two ends of each support column 12 are respectively in contact fit with the oil distribution disc 2 and the lower membrane head 3, each support column 12 can be used for supporting the oil distribution disc 2 to prevent the oil distribution disc 2 from deforming under the action of pressure, counter bores are formed in the support columns 12, and supporting screws 13 penetrate through the counter bores and are in threaded connection with the lower membrane head 3.
When the oil distribution disc 2 is installed with the lower membrane head 3, the oil distribution disc 2 is clamped in a clamping groove of the lower membrane head 3, so that a pressing groove 8 on the side surface of the oil distribution disc 2 is aligned with an eccentric pressing block 9 on the lower membrane head 3. Before the compression screw 10 is screwed down, when the eccentric pressing block 9 is rotated out of the pressing groove 8, the oil distribution disc 2 is not limited and can be freely disassembled; when the eccentric pressing block 9 is rotated into the pressing groove 8, the oil distribution disc 2 is limited by the eccentric pressing block 9, and the oil distribution disc 2 can be pressed and fixed through the pressing screw 10.
The elastic locating pin 7 comprises a sleeve 14, a screwed plug 15 is connected to the bottom end of the sleeve 14 in a threaded mode, a pin 16 is arranged on the top end of the sleeve 14 in a sliding mode, a spring 17 is arranged between the screwed plug 15 and the pin 16 in the sleeve 14, the top end of the pin 16 always extends to the outer side of the sleeve 14 under the action of the elastic force of the spring 17 under the condition that the external force is not applied, a limiting portion 18 matched with the sleeve 14 is arranged at the bottom end of the pin 16, the pin 16 can be prevented from being separated from the sleeve 14, and the compression degree of the spring 17 can be adjusted by screwing the screwed plug 15.
The outside of sleeve 14 is equipped with the sealing washer groove, installs sealing washer 19 in the sealing washer groove, forms sealedly between sealing washer 19 and the lateral wall of recess, prevents that oil from getting into the recess inside and causing the corruption to elastic locating pin 7.
The oil distribution disc 2 and the upper membrane head 1 are provided with a plurality of O-shaped sealing rings 11 at the edge of the membrane 4, so that oil gas is prevented from leaking outwards, one side of a groove of each O-shaped sealing ring 11 is in a dovetail form, the other side of the groove is in a straight groove form, and the O-shaped sealing ring is convenient to install and can also play a certain fixing role on the O-shaped sealing rings 11. The annular leakage detection groove 20 is formed in the oil distribution disc 2 and the upper membrane head 1 between two adjacent O-shaped sealing rings 11, a pressure sensor is introduced into the annular leakage detection groove 20, the leakage condition of the O-shaped sealing rings 11 can be detected, the positions of the elastic positioning pins 7 and the annular leakage detection groove 20 are aligned, after the upper membrane head 1 and the oil distribution disc 2 are tightly pressed, the pin 16 of the elastic positioning pins 7 cannot be fully compressed into the sleeve 14 but partially compressed, the pin 16 can naturally extend upwards into the annular leakage detection groove 20 under the action of the elastic force of the spring 17, the size of the pin 16 is smaller than that of the annular leakage detection groove 20, the annular leakage detection groove 20 cannot be blocked, and therefore the pin 16 can always play a role in positioning the membrane 4 after the upper membrane head 1 and the oil distribution disc 2 are tightly pressed, and the membrane 4 is prevented from being displaced.
When the diaphragm 4 is installed, the elastic locating pins 7 are correspondingly placed in the grooves on the edge of the upper end face of the oil distribution disc 2, under the condition that no external force is applied, the pin posts 16 of the elastic locating pins 7 extend to the outer side of the sleeve 14 all the time under the elastic action of the internal springs 17, the diaphragm 4 can be located by arranging at least three elastic locating pins 7, the diaphragm 4 is placed between the pin posts 16, the diaphragm 4 is located in contact with the side wall of the pin posts 16, after the diaphragm 4 is placed, the upper film head 1 is directly placed on the oil distribution disc 2, the upper film head 1 directly compresses the elastic locating pins 7, meanwhile, the upper film head 1 is matched with the oil distribution disc 2 to compress and fix the edge of the diaphragm 4, and finally the upper film head 1 and the lower film head 3 are locked and fixed through bolts, so that the positioning and the installation of the diaphragm 4 can be completed.
The overflow valve 6 comprises an outer sleeve 21 and an inner core 22, wherein the outer sleeve 21 and the inner core 22 are connected through threads, an overflow channel 23 is arranged in the center of the inner core 22, an overflow piston 24 is arranged between the top of the inner core 22 and the outer sleeve 21, a conical head 25 is arranged at the bottom of the overflow piston 24, the conical head 25 is matched with the overflow channel 23 to realize the closing or opening of the overflow channel 23, a compression spring 26 is arranged between the top of the overflow piston 24 and the top of the outer sleeve 21, an overflow port 27 is arranged at the top of the outer sleeve 21, a locking nut 28 is arranged at the outer side of the inner core 22 in a threaded manner, the outer sleeve 21 is locked at one stage through the locking nut 28, a locking screw 29 is arranged in the side wall of the locking nut 28, and the outer sleeve 21 is locked at the other stage through the locking screw 29.
The bottom of the inner core 22 is provided with a fixed flange 30, the bottom of the fixed flange 30 is provided with a fixed gasket 31 sleeved on the inner core 22, and the bottom of the inner core 22 is provided with external threads connected with the lower membrane head 3 so as to fixedly connect the inner core 22 with the lower membrane head 3.
The top of the overflow port 27 is connected with an elbow 32 for connecting an external pipeline, and the top of the overflow piston 24 is provided with a spring mounting groove for mounting the bottom of the compression spring 26.
The overflow piston 24 is internally provided with a traction threaded hole 33, when in installation, a tool can extend into the outer sleeve from the overflow port 27, pass through the compression spring 26 and be in threaded connection with the traction threaded hole 33 of the overflow piston, so that the overflow piston 24 is pulled into the outer sleeve 21, the inner core 22 is conveniently installed, and finally the elbow 32 is installed.
A locking washer 34 sleeved outside the inner core 22 is arranged between the bottom of the outer sleeve 21 and the locking nut 28, so that the locking strength can be enhanced, and a sealing ring 19 is arranged between the outer sleeve 21 and the inner core 22, so that the oil can be prevented from leaking outwards from a gap between the outer sleeve 21 and the inner core 22.
The overflow valve 6 is arranged on the lower membrane head 3, is communicated with the oil cavity 5 through an internal channel of the lower membrane head 3, adjusts the compression degree of the compression spring 26 by adjusting the position of the outer sleeve 21 on the inner core 22, thereby adjusting the overflow pressure, and locks the position of the outer sleeve 21 on the inner core 22 through the locking nut 28 and the locking screw 29 after the overflow pressure is adjusted. When the oil pressure of the oil cavity 5 exceeds the elastic force of the compression spring 26, the overflow piston 24 is pushed upwards to move so as to open the overflow channel 23 for pressure relief, and the diaphragm 4 is protected; when the oil pressure of the oil chamber 5 is smaller than the elastic force of the compression spring 26, the relief piston 24 closes the relief passage 23, maintaining the normal pressure of the oil chamber 5.
The above embodiments are not to be taken as limiting the scope of the invention, and any alternatives or modifications to the embodiments of the invention will be apparent to those skilled in the art and fall within the scope of the invention.
The present invention is not described in detail in the present application, and is well known to those skilled in the art.
Claims (9)
1. The utility model provides a membrane head structure assembly about diaphragm compressor, includes membrane head, joins in marriage food tray and lower membrane head, goes up and is equipped with diaphragm, its characterized in that between membrane head and the food tray: the oil distribution disc and the lower membrane head are of split structures, the oil distribution disc and the lower membrane head are fixed through a rotary pressing mechanism, an oil cavity which is concave inwards is formed in the end face, close to the oil distribution disc, of the lower membrane head, and an overflow valve communicated with the oil cavity is arranged on the side part of the lower membrane head; the edge of the upper end surface of the oil distribution disc is provided with at least three grooves along the circumference, each groove is internally provided with an elastic locating pin, the upper end of each elastic locating pin extends to the upper part of the corresponding groove to be in contact fit with the upper membrane head, the membrane is arranged between the elastic locating pins for locating, and the edge of the membrane is fixed by the pressing force between the oil distribution disc and the upper membrane head;
The rotary pressing mechanism comprises a plurality of pressing grooves formed in the outer circular side wall of the oil distribution disc, a rotatable eccentric pressing block is arranged on the outer side of each pressing groove and fixedly connected with the lower film head through a pressing screw, one side of each eccentric pressing block extends into each pressing groove to press and fix the oil distribution disc, each eccentric pressing block is in clearance fit with the corresponding pressing groove, a unthreaded hole is formed in each eccentric pressing block, the eccentric pressing blocks freely rotate around the corresponding pressing screw, and the corresponding pressing screw penetrates through the corresponding unthreaded hole and is in threaded connection with the lower film head.
2. The membrane compressor upper and lower membrane head structure assembly of claim 1, wherein: the upper end face of the lower membrane head is provided with a clamping groove matched with the oil distribution disc in shape, the oil distribution disc is clamped in the clamping groove, and an O-shaped sealing ring is arranged between the oil distribution disc and the lower membrane head and positioned at the outer side of the oil cavity.
3. The membrane compressor upper and lower membrane head structure assembly of claim 1, wherein: the oil cavity is frustum-shaped, the oil cavity is communicated with an oil channel in the oil distribution disc, a plurality of support columns are arranged between the oil distribution disc and the lower membrane head in the oil cavity, two ends of each support column are respectively in contact fit with the oil distribution disc and the lower membrane head, counter bores are formed in the support columns, and support screws penetrate through the counter bores and are in threaded connection with the lower membrane head.
4. The membrane compressor upper and lower membrane head structure assembly of claim 1, wherein: the elastic locating pin comprises a sleeve, a screwed plug is connected to the bottom end of the sleeve in a threaded manner, a pin column is arranged on the top end of the sleeve in a sliding manner, a spring is arranged between the screwed plug and the pin column in the sleeve, a limiting part matched with the sleeve is arranged at the bottom end of the pin column, a sealing ring groove is formed in the outer side of the sleeve, and a sealing ring is arranged in the sealing ring groove.
5. The membrane compressor upper and lower membrane head structure assembly of claim 1, wherein: the position between the oil distribution disc and the upper membrane head, which is positioned at the edge of the membrane, is provided with a plurality of O-shaped sealing rings, the oil distribution disc between two adjacent O-shaped sealing rings and the upper membrane head are provided with annular leakage detection grooves, and the positions of the elastic positioning pins and the annular leakage detection grooves are aligned.
6. The membrane compressor upper and lower membrane head structure assembly of claim 1, wherein: the overflow valve comprises an outer sleeve and an inner core, wherein the outer sleeve and the inner core are connected through threads, an overflow channel is arranged in the center of the inner core, an overflow piston is arranged between the top of the inner core and the outer sleeve, a conical head is arranged at the bottom of the overflow piston, the conical head is matched with the overflow channel to realize the sealing or opening of the overflow channel, a compression spring is arranged between the top of the overflow piston and the top of the outer sleeve, an overflow port is arranged at the top of the outer sleeve, a locking nut is arranged at the outer side of the inner core in a threaded manner, and a locking screw is arranged in the side wall of the locking nut.
7. The membrane compressor upper and lower membrane head structure assembly of claim 6, wherein: the bottom of inner core is equipped with flange, and flange's bottom is equipped with the cover and establishes the fixed washer on the inner core, the bottom of inner core is equipped with the external screw thread that is connected with lower membrane head.
8. The membrane compressor upper and lower membrane head structure assembly of claim 6, wherein: the top of overflow mouth is connected with the elbow, the top of overflow piston is equipped with the spring mounting groove, the inside of overflow piston is equipped with the traction screw hole.
9. The membrane compressor upper and lower membrane head structure assembly of claim 6, wherein: a locking washer sleeved outside the inner core is arranged between the bottom of the outer sleeve and the locking nut, and a sealing ring is arranged between the outer sleeve and the inner core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310392074.3A CN116201718B (en) | 2023-04-10 | 2023-04-10 | Upper and lower membrane head structure assembly of diaphragm compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310392074.3A CN116201718B (en) | 2023-04-10 | 2023-04-10 | Upper and lower membrane head structure assembly of diaphragm compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116201718A CN116201718A (en) | 2023-06-02 |
| CN116201718B true CN116201718B (en) | 2024-04-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310392074.3A Active CN116201718B (en) | 2023-04-10 | 2023-04-10 | Upper and lower membrane head structure assembly of diaphragm compressor |
Country Status (1)
| Country | Link |
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| CN (1) | CN116201718B (en) |
Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006060645A1 (en) * | 2006-02-10 | 2007-08-23 | Continental Teves Ag & Co. Ohg | Motor-pump assembly for providing pressure for motor vehicle brake operating device, has outlet channel arranged in working-space cover and pump housing, such that air expelled from working-space is directed into inner space of housing |
| CN204627939U (en) * | 2015-03-20 | 2015-09-09 | 江苏恒久机械有限公司 | The cylinder cap of diaphragm type compressor embeds cylinder body without oil distribution casing film header structure |
| CN204677249U (en) * | 2015-05-29 | 2015-09-30 | 江西标洪发动机挺柱有限公司 | A kind of diesel engine tappet |
| JP2015203310A (en) * | 2014-04-11 | 2015-11-16 | 東京理化器械株式会社 | diaphragm vacuum pump |
| CN205514985U (en) * | 2016-01-28 | 2016-08-31 | 成都贝施美医疗设备有限公司 | Carving mills eccentric locking device of machine |
| CN206487607U (en) * | 2017-01-13 | 2017-09-12 | 北京京城压缩机有限公司 | A kind of oil distribution casing structure of diaphragm type compressor |
| CN108626039A (en) * | 2018-04-18 | 2018-10-09 | 安徽江淮汽车集团股份有限公司 | Air filter |
| CN208534734U (en) * | 2018-05-23 | 2019-02-22 | 焦作新景科技有限公司 | A kind of durable acetylene compressor |
| CN110454364A (en) * | 2019-08-13 | 2019-11-15 | 西安交通大学 | A kind of hydrogenation stations diaphragm type compressor cylinder cover cooling structure with heat pipe |
| CN110454368A (en) * | 2019-08-13 | 2019-11-15 | 西安交通大学 | A kind of hydrogenation stations diaphragm type compressor oil distribution casing running of hydraulic power oil optimization structure |
| CN110486266A (en) * | 2019-08-12 | 2019-11-22 | 烟台中宇航空液压有限公司 | A kind of oil distribution casing |
| CN111794950A (en) * | 2020-07-06 | 2020-10-20 | 沈阳远大压缩机有限公司 | Diaphragm compressor cylinder seal structure |
| CN114215724A (en) * | 2021-12-28 | 2022-03-22 | 苏州强硕科技装备制造有限公司 | Two-stage compression diaphragm compressor structure |
| CN216477779U (en) * | 2021-10-25 | 2022-05-10 | 沈阳远大压缩机有限公司 | Diaphragm compressor cylinder sealing structure, compression cylinder and diaphragm compressor |
| CN217926235U (en) * | 2022-08-25 | 2022-11-29 | 江苏民诺净化设备有限公司 | High leakproofness diaphragm compressor |
| CN217999815U (en) * | 2022-08-26 | 2022-12-09 | 江苏民诺氢能源科技有限公司 | Hydrogen compressor that sealing performance is high |
| CN218624591U (en) * | 2022-11-04 | 2023-03-14 | 烟台东德氢能技术有限公司 | Lower membrane head of small-displacement diaphragm compressor |
| CN218760365U (en) * | 2022-11-04 | 2023-03-28 | 烟台东德氢能技术有限公司 | Membrane head of small-displacement diaphragm compressor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK179576B1 (en) * | 2017-07-13 | 2019-02-20 | Nel Hydrogen A/S | A method of controlling the hydraulic fluid pressure of a diaphragm compressor |
-
2023
- 2023-04-10 CN CN202310392074.3A patent/CN116201718B/en active Active
Patent Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006060645A1 (en) * | 2006-02-10 | 2007-08-23 | Continental Teves Ag & Co. Ohg | Motor-pump assembly for providing pressure for motor vehicle brake operating device, has outlet channel arranged in working-space cover and pump housing, such that air expelled from working-space is directed into inner space of housing |
| JP2015203310A (en) * | 2014-04-11 | 2015-11-16 | 東京理化器械株式会社 | diaphragm vacuum pump |
| CN204627939U (en) * | 2015-03-20 | 2015-09-09 | 江苏恒久机械有限公司 | The cylinder cap of diaphragm type compressor embeds cylinder body without oil distribution casing film header structure |
| CN204677249U (en) * | 2015-05-29 | 2015-09-30 | 江西标洪发动机挺柱有限公司 | A kind of diesel engine tappet |
| CN205514985U (en) * | 2016-01-28 | 2016-08-31 | 成都贝施美医疗设备有限公司 | Carving mills eccentric locking device of machine |
| CN206487607U (en) * | 2017-01-13 | 2017-09-12 | 北京京城压缩机有限公司 | A kind of oil distribution casing structure of diaphragm type compressor |
| CN108626039A (en) * | 2018-04-18 | 2018-10-09 | 安徽江淮汽车集团股份有限公司 | Air filter |
| CN208534734U (en) * | 2018-05-23 | 2019-02-22 | 焦作新景科技有限公司 | A kind of durable acetylene compressor |
| CN110486266A (en) * | 2019-08-12 | 2019-11-22 | 烟台中宇航空液压有限公司 | A kind of oil distribution casing |
| CN110454364A (en) * | 2019-08-13 | 2019-11-15 | 西安交通大学 | A kind of hydrogenation stations diaphragm type compressor cylinder cover cooling structure with heat pipe |
| CN110454368A (en) * | 2019-08-13 | 2019-11-15 | 西安交通大学 | A kind of hydrogenation stations diaphragm type compressor oil distribution casing running of hydraulic power oil optimization structure |
| CN111794950A (en) * | 2020-07-06 | 2020-10-20 | 沈阳远大压缩机有限公司 | Diaphragm compressor cylinder seal structure |
| CN216477779U (en) * | 2021-10-25 | 2022-05-10 | 沈阳远大压缩机有限公司 | Diaphragm compressor cylinder sealing structure, compression cylinder and diaphragm compressor |
| CN114215724A (en) * | 2021-12-28 | 2022-03-22 | 苏州强硕科技装备制造有限公司 | Two-stage compression diaphragm compressor structure |
| CN217926235U (en) * | 2022-08-25 | 2022-11-29 | 江苏民诺净化设备有限公司 | High leakproofness diaphragm compressor |
| CN217999815U (en) * | 2022-08-26 | 2022-12-09 | 江苏民诺氢能源科技有限公司 | Hydrogen compressor that sealing performance is high |
| CN218624591U (en) * | 2022-11-04 | 2023-03-14 | 烟台东德氢能技术有限公司 | Lower membrane head of small-displacement diaphragm compressor |
| CN218760365U (en) * | 2022-11-04 | 2023-03-28 | 烟台东德氢能技术有限公司 | Membrane head of small-displacement diaphragm compressor |
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