CN204755236U - Construction improvement's reciprocating vacuum pump - Google Patents
Construction improvement's reciprocating vacuum pump Download PDFInfo
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- CN204755236U CN204755236U CN201520437362.7U CN201520437362U CN204755236U CN 204755236 U CN204755236 U CN 204755236U CN 201520437362 U CN201520437362 U CN 201520437362U CN 204755236 U CN204755236 U CN 204755236U
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Abstract
The utility model discloses a construction improvement's reciprocating vacuum pump, it includes vacuum pump housing, drive fan, defeated tuber pipe way, and vacuum pump housing's vacuum pump cavity inlays dress piston rod, piston only, and the piston only includes piston main part, piston end cover, shaping piston holding chamber between piston main part and the piston end cover, piston holding intracavity inlays adorns two at least semiconductor refrigeration components, and semiconductor refrigeration components includes semiconductor refrigeration piece, refrigeration piece radiator, thermal adhesive layer, the middle air duct of the embedded dress of holding blind hole of tip before the piston rod, shaping inlet channel between the circumference wall in middle air duct and the holding blind hole, air outlet channel is offered to middle air duct core, offers inlet port, venthole between piston main part and the piston rod, and the tip sets up spacer ring cover, defeated tuber pipe way intercommunication air outlet channel and drive fan air intake behind the middle air duct. Through the structure design, the utility model has the advantages of novel in design, the radiating effect is good, long service life, reliable and stable nature are good.
Description
Technical field
The utility model relates to vacuum pump technology field, particularly relates to a kind of structure improved reciprocating vacuum pump.
Background technique
Along with the development of vacuum application, the kind of vacuum pump has developed a variety of, and its pumping speed is severally raised to hundreds of thousands per second, millions of liter from zero point per second; Along with vacuum technique is more and more wider to requirement of its application pressure range in production and field of scientific study, mostly need to form the requirement that could meet production and scientific research process after vacuum pumping system is bled jointly by several vacuum pump; The scope of the working pressure involved by vacuum application is very wide, therefore the vacuum pump of any one type all can not be applicable to all range of working pressure completely, according to different range of working pressure and different job requirements, dissimilar vacuum pump can only be used.In addition, in order to easy to use and meet the needs of various vacuum technology process, sometimes need various vacuum pump to combine by its performance requirement, apply in the mode of vacuum pump set.
According to the difference of structure, existing vacuum pump can be divided into dry screw vacuum pump, water ring vaccum pump, reciprocating vacuum pump, sliding valve vacuum pump, sliding vane rotary vacuum pump, Roots pump etc.; Wherein, as a kind of main force vacuum pump type, reciprocating vacuum pump is widely used in industrial production and scientific research process.
Need point out further, completing utilizing reciprocating vacuum pump vacuumizes in the process of operation, gas can produced a large amount of heats by the process compressed, and these heats must be distributed by the housing of vacuum pump, once cause heat accumulation because not dispelling the heat in time, the piston of reciprocating vacuum pump inside can raise and deform by Yin Wendu, even can cause seizure of piston and the pump housing is damaged.So, for reciprocating vacuum pump, how effectively to improve heat dispersion and become the working life extending reciprocating vacuum pump, the emphasis improving reliability.
Model utility content
The purpose of this utility model is to provide a kind of structure improved reciprocating vacuum pump, and this structure improved reciprocating vacuum pump modern design, good heat dissipation effect, long service life, reliability are good.
For achieving the above object, the utility model is achieved through the following technical solutions.
A kind of structure improved reciprocating vacuum pump, include vacuum pump housing, the inside of vacuum pump housing forms vacuum pump chamber, vacuum pump chamber indoor can be equiped with piston rod relative motion and be installed in the piston only of piston rod, piston only includes piston main body and is screwed on the piston end cap of piston main body ear end face, the inside of piston only forms piston holding cavity between piston main body and piston end cap, the central position of piston main body offers the body through-holes run through completely front and back, run through completely before and after the central position of piston end cap offers and the end cap through hole axially aligned with body through-holes, the front end of piston rod is successively through the end cap through hole of piston end cap, the body through-holes of piston main body also extends to the forward end of piston main body, piston rod is provided with shoulder block in the rear end side of piston end cap, piston rod is provided with external thread part in the forward end of piston main body, the external thread part of piston rod is screwed with locking nut, piston main body, piston end cap is installed between locking nut and shoulder block,
At least two semiconductor refrigeration assemblies are embedded with in the piston holding cavity of piston only, each semiconductor cooling assembly includes semiconductor refrigerating sheet respectively, the hot side side installing refrigerating sheet radiator of semiconductor refrigerating sheet, the hot side of refrigerating sheet radiator and semiconductor refrigerating sheet touches, refrigerating sheet radiator is provided with the radiator fins towards deviating from the extension of semiconductor refrigerating sheet side, radiator fins and refrigerating sheet radiator one-body molded, heat conduction glue-line is equiped with between the huyashi-chuuka (cold chinese-style noodles) of semiconductor refrigerating sheet and piston main body, heat conduction glue-line is installed between semiconductor refrigerating sheet and piston main body, the huyashi-chuuka (cold chinese-style noodles) of semiconductor refrigerating sheet, heat conduction glue-line and piston main body touch successively,
The core of piston rod front end offers the accommodating blind hole towards open front, the middle air pipe that the axial direction along accommodating blind hole extends is embedded with in accommodating blind hole, the middle outer circle wall of air pipe and the inner peripheral wall interval of accommodating blind hole are arranged and form gas-entered passageway between the outer circle wall of middle air pipe and the inner peripheral wall of accommodating blind hole, the core of middle air pipe offers the outlet passageway run through completely along axial direction, the inlet hole being communicated with gas-entered passageway and piston holding cavity and the air outlet hole being communicated with outlet passageway and piston holding cavity is offered between piston main body with piston rod, air outlet hole and inlet hole time interval are arranged and air outlet hole is positioned at the rear end side of inlet hole, the rearward end of middle air pipe is provided with in circular interval ring set between inlet hole and air outlet hole, the inner peripheral wall of the outer circle wall of interval ring set and the accommodating blind hole of piston rod touches,
This structure improved reciprocating vacuum pump is also fitted with drive fan and wind conveying pipe road, and an end in wind conveying pipe road is communicated with outlet passageway, and an end in wind conveying pipe road is communicated with the intake grill of drive fan.
Wherein, the front end of described middle air pipe is provided with adpting flange block, adpting flange block is screwed on the front opening place of described accommodating blind hole, run through completely before and after adpting flange block offers in the periphery of described outlet passageway and the vent of circumferentially ring-type uniform intervals distribution, each vent is communicated with described gas-entered passageway respectively, and an end in described wind conveying pipe road is installed in adpting flange block and is communicated with described outlet passageway.
Wherein, O-ring seal is installed with between the inner peripheral wall of the outer circle wall of described interval ring set and the accommodating blind hole of described piston rod.
The beneficial effects of the utility model are: the structure improved reciprocating vacuum pump of one described in the utility model, it comprises the piston rod of the vacuum pump chamber indoor being installed on vacuum pump housing, piston only, piston only comprises piston main body, piston end cap, shaping piston holding cavity between piston main body and piston end cap, piston rod front end is successively through the end cap through hole of piston end cap, the body through-holes of piston main body also extends to piston main body forward end, piston rod arranges shoulder block in piston end cover back-end side, the external thread part spiral shell dress locking nut of piston rod, piston main body, piston end cap is installed between locking nut and shoulder block, piston holding cavity is embedded is filled to few two semiconductor refrigeration assemblies, and semiconductor refrigeration assembly comprises semiconductor refrigerating sheet, refrigerating sheet radiator, and refrigerating sheet radiator arranges radiator fins, and semiconductor refrigerating sheet huyashi-chuuka (cold chinese-style noodles) is touched by heat conduction glue-line and piston main body, piston rod front end core offers accommodating blind hole, air pipe in the middle of setting-in in accommodating blind hole, shaping gas-entered passageway between middle air pipe outer circle wall and accommodating blind hole inner peripheral wall, middle air pipe core offers outlet passageway, offer the inlet hole being communicated with gas-entered passageway and piston holding cavity and the air outlet hole being communicated with outlet passageway and piston holding cavity between piston main body with piston rod, middle air pipe rearward end arranges interval ring set between inlet hole and air outlet hole, this structure improved reciprocating vacuum pump is equipped with drive fan, wind conveying pipe road, and an end in wind conveying pipe road is communicated with outlet passageway, and an end in wind conveying pipe road is communicated with the intake grill of drive fan.Designed by said structure, the utility model has novel in structural design, good heat dissipation effect, long service life, advantage that reliability is good.
Accompanying drawing explanation
Utilize accompanying drawing to be further detailed the utility model below, but the embodiment in accompanying drawing is not formed any restriction of the present utility model.
Fig. 1 is structural representation of the present utility model.
Include in FIG:
1---vacuum pump housing 11---vacuum pump chamber
2---piston rod 21---shoulder block
22---external thread part 23---accommodating blind hole
3---piston only 31---piston main body
311---body through-holes 32---piston end cap
321---end cap through hole 33---piston holding cavity
4---locking nut 5---semiconductor refrigeration assembly
51---semiconductor refrigerating sheet 52---refrigerating sheet radiator
521---radiator fins 53---heat conduction glue-line
6---middle air pipe 61---interval ring set
62---adpting flange block 621---vent
71---gas-entered passageway 72---outlet passageway
73---inlet hole 74---air outlet hole
81---drive fan 82---wind conveying pipe road
9---O-ring seal.
Embodiment
Below in conjunction with concrete mode of execution, the utility model is described.
As shown in Figure 1, a kind of structure improved reciprocating vacuum pump, include vacuum pump housing 1, the inside of vacuum pump housing 1 forms vacuum pump chamber 11, piston rod 2 can be equiped with relative motion and be installed in the piston only 3 of piston rod 2 in vacuum pump chamber 11, piston only 3 includes piston main body 31 and is screwed on the piston end cap 32 of piston main body 31 ear end face, the inside of piston only 3 forms piston holding cavity 33 between piston main body 31 and piston end cap 32, the central position of piston main body 31 offers the body through-holes 311 run through completely front and back, run through completely before and after the central position of piston end cap 32 offers and the end cap through hole 321 axially aligned with body through-holes 311, the front end of piston rod 2 is successively through the end cap through hole 321 of piston end cap 32, the body through-holes 311 of piston main body 31 also extends to the forward end of piston main body 31, piston rod 2 is provided with shoulder block 21 in the rear end side of piston end cap 32, piston rod 2 is provided with external thread part 22 in the forward end of piston main body 31, the external thread part 22 of piston rod 2 is screwed with locking nut 4, piston main body 31, piston end cap 32 is installed between locking nut 4 and shoulder block 21.
Further, at least two semiconductor refrigeration assemblies 5 are embedded with in the piston holding cavity 33 of piston only 3, each semiconductor cooling assembly 5 includes semiconductor refrigerating sheet 51 respectively, the hot side side installing refrigerating sheet radiator 52 of semiconductor refrigerating sheet 51, refrigerating sheet radiator 52 touches with the hot side of semiconductor refrigerating sheet 51, refrigerating sheet radiator 52 is provided with the radiator fins 521 towards deviating from the extension of semiconductor refrigerating sheet 51 side, radiator fins 521 is one-body molded with refrigerating sheet radiator 52, heat conduction glue-line 53 is equiped with between the huyashi-chuuka (cold chinese-style noodles) of semiconductor refrigerating sheet 51 and piston main body 31, heat conduction glue-line 53 is installed between semiconductor refrigerating sheet 51 and piston main body 31, the huyashi-chuuka (cold chinese-style noodles) of semiconductor refrigerating sheet 51, heat conduction glue-line 53 and piston main body 31 touch successively.
Further, the core of piston rod 2 front end offers the accommodating blind hole 23 towards open front, the middle air pipe 6 that the axial direction along accommodating blind hole 23 extends is embedded with in accommodating blind hole 23, the middle outer circle wall of air pipe 6 and the inner peripheral wall interval of accommodating blind hole 23 are arranged and form gas-entered passageway 71 between the outer circle wall of middle air pipe 6 and the inner peripheral wall of accommodating blind hole 23, the core of middle air pipe 6 offers the outlet passageway 72 run through completely along axial direction, offer the inlet hole 73 that is communicated with gas-entered passageway 71 and piston holding cavity 33 between piston main body 31 with piston rod 2 and be communicated with the air outlet hole 74 of outlet passageway 72 and piston holding cavity 33, air outlet hole 74 and inlet hole 73 time interval are arranged and air outlet hole 74 is positioned at the rear end side of inlet hole 73, the rearward end of middle air pipe 6 is provided with in circular interval ring set 61 between inlet hole 73 and air outlet hole 74, the inner peripheral wall of the outer circle wall of interval ring set 61 and the accommodating blind hole 23 of piston rod 2 touches.
In addition, this structure improved reciprocating vacuum pump is also fitted with drive fan 81 and wind conveying pipe road 82, and an end in wind conveying pipe road 82 is communicated with outlet passageway 72, and an end in wind conveying pipe road 82 is communicated with the intake grill of drive fan 81.
In utility model works process, piston rod 2 promotes that piston only 3 is movable vacuumizes operation to complete; Need to explain further, in utility model works process, the cold of semiconductor refrigerating sheet 51 huyashi-chuuka (cold chinese-style noodles) is directly conducted to piston main body 31, and then initiatively directly carries out cooling down to piston main body 31, and then realizes piston only 3 initiatively quick heat radiating.Need to explain further, semiconductor refrigerating sheet 51 of the present utility model is contacted with piston main body 31 by heat conduction glue-line 53; Wherein, heat conduction glue-line 53 1 aspect can realize conducting cold fast, the huyashi-chuuka (cold chinese-style noodles) of semiconductor refrigerating sheet 51 can be made on the other hand to contact with piston main body 31 more abundant, and then improve the efficiency of active heat removal further.In addition, the heat of semiconductor refrigerating sheet 51 hot side conducts in the air in piston holding cavity 33 by refrigerating sheet radiator 52, and the radiator fins 521 of refrigerating sheet radiator 52 can improve the radiating efficiency of semiconductor refrigerating sheet 51 hot side effectively, and then ensure the refrigerating efficiency of semiconductor refrigerating sheet 51 huyashi-chuuka (cold chinese-style noodles).
Need point out further, carry out in the process of active heat removal cooling at semiconductor refrigeration assembly 5 pairs of piston onlies 3, under the driving effect of drive fan 81, cool ambient air is successively via gas-entered passageway 71, inlet hole 73 and enter in piston holding cavity 33, and the air entered in piston holding cavity 33 is final successively via air outlet hole 74, outlet passageway 72, wind conveying pipe road 82 and drive fan 81 and discharge, in the process of said flow by piston holding cavity 33, hot air in piston holding cavity 33 carries away by this air-flow, and then piston holding cavity 33 is dispelled the heat.
Comprehensive above-mentioned situation is known, is designed by said structure, and the utility model has novel in structural design, good heat dissipation effect, long service life, advantage that reliability is good.
As preferred embodiment, as shown in Figure 1, the front end of middle air pipe 6 is provided with adpting flange block 62, adpting flange block 62 is screwed on the front opening place of accommodating blind hole 23, run through completely before and after adpting flange block 62 offers in the periphery of outlet passageway 72 and the vent 621 of circumferentially ring-type uniform intervals distribution, each vent 621 is communicated with gas-entered passageway 71 respectively, and an end in wind conveying pipe road 82 is installed in adpting flange block 62 and is communicated with outlet passageway 72.By setting up adpting flange block 62 structure, the utility model can ensure that middle air pipe 6 is installed in the accommodating blind hole 23 of piston rod 2 quickly and easily, and the vent 621 of uniform intervals distribution can make cool ambient air enter in gas-entered passageway 71.
As preferred embodiment, as shown in Figure 1, O-ring seal 9 is installed with between the inner peripheral wall of the outer circle wall of interval ring set 61 and the accommodating blind hole 23 of piston rod 2.In utility model works process, sealing cushion rubber 9 structure can make the outlet of the entrance of inlet hole 73 and air outlet hole 74 effectively sealed spacer come.
Above content is only preferred embodiment of the present utility model, for those of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, this description should not be construed as restriction of the present utility model.
Claims (3)
1. a structure improved reciprocating vacuum pump, it is characterized in that: include vacuum pump housing (1), the inside of vacuum pump housing (1) forms vacuum pump chamber (11), piston rod (2) can be equiped with relative motion and be installed in the piston only (3) of piston rod (2) in vacuum pump chamber (11), piston only (3) includes piston main body (31) and is screwed on the piston end cap (32) of piston main body (31) ear end face, the inside of piston only (3) forms piston holding cavity (33) between piston main body (31) and piston end cap (32), the central position of piston main body (31) offers the body through-holes (311) run through completely front and back, run through completely before and after the central position of piston end cap (32) offers and the end cap through hole (321) axially aligned with body through-holes (311), the front end of piston rod (2) is successively through the end cap through hole (321) of piston end cap (32), the body through-holes (311) of piston main body (31) also extends to the forward end of piston main body (31), piston rod (2) is provided with shoulder block (21) in the rear end side of piston end cap (32), piston rod (2) is provided with external thread part (22) in the forward end of piston main body (31), the external thread part (22) of piston rod (2) is screwed with locking nut (4), piston main body (31), piston end cap (32) is installed between locking nut (4) and shoulder block (21),
At least two semiconductor refrigeration assemblies (5) are embedded with in the piston holding cavity (33) of piston only (3), each semiconductor cooling assembly (5) includes semiconductor refrigerating sheet (51) respectively, hot side side installing refrigerating sheet radiator (52) of semiconductor refrigerating sheet (51), refrigerating sheet radiator (52) touches with the hot side of semiconductor refrigerating sheet (51), refrigerating sheet radiator (52) is provided with the radiator fins (521) towards deviating from the extension of semiconductor refrigerating sheet (51) side, radiator fins (521) is one-body molded with refrigerating sheet radiator (52), heat conduction glue-line (53) is equiped with between the huyashi-chuuka (cold chinese-style noodles) of semiconductor refrigerating sheet (51) and piston main body (31), heat conduction glue-line (53) is installed between semiconductor refrigerating sheet (51) and piston main body (31), the huyashi-chuuka (cold chinese-style noodles) of semiconductor refrigerating sheet (51), heat conduction glue-line (53) and piston main body (31) touch successively,
The core of piston rod (2) front end offers the accommodating blind hole (23) towards open front, the middle air pipe (6) that the axial direction along accommodating blind hole (23) extends is embedded with in accommodating blind hole (23), the middle outer circle wall of air pipe (6) and the inner peripheral wall interval of accommodating blind hole (23) are arranged and form gas-entered passageway (71) between the outer circle wall of middle air pipe (6) and the inner peripheral wall of accommodating blind hole (23), the core of middle air pipe (6) offers the outlet passageway (72) run through completely along axial direction, offer the inlet hole (73) that is communicated with gas-entered passageway (71) and piston holding cavity (33) between piston main body (31) with piston rod (2) and be communicated with the air outlet hole (74) of outlet passageway (72) and piston holding cavity (33), air outlet hole (74) and inlet hole (73) time interval are arranged and air outlet hole (74) is positioned at the rear end side of inlet hole (73), the rearward end of middle air pipe (6) is provided with in circular interval ring set (61) between inlet hole (73) and air outlet hole (74), the inner peripheral wall of the outer circle wall of interval ring set (61) and the accommodating blind hole (23) of piston rod (2) touches,
This structure improved reciprocating vacuum pump is also fitted with drive fan (81) and wind conveying pipe road (82), one end in wind conveying pipe road (82) is communicated with outlet passageway (72), and an end of wind conveying pipe road (82) is communicated with the intake grill of drive fan (81).
2. the structure improved reciprocating vacuum pump of one according to claim 1, it is characterized in that: the front end of described middle air pipe (6) is provided with adpting flange block (62), adpting flange block (62) is screwed on the front opening place of described accommodating blind hole (23), run through completely before and after adpting flange block (62) offers in the periphery of described outlet passageway (72) and the vent (621) of circumferentially ring-type uniform intervals distribution, each vent (621) is communicated with described gas-entered passageway (71) respectively, one end of described wind conveying pipe road (82) is installed in adpting flange block (62) and is communicated with described outlet passageway (72).
3. the structure improved reciprocating vacuum pump of one according to claim 2, is characterized in that: be installed with O-ring seal (9) between the inner peripheral wall of the outer circle wall at described interval ring set (61) and the accommodating blind hole (23) of described piston rod (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520437362.7U CN204755236U (en) | 2015-06-24 | 2015-06-24 | Construction improvement's reciprocating vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520437362.7U CN204755236U (en) | 2015-06-24 | 2015-06-24 | Construction improvement's reciprocating vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204755236U true CN204755236U (en) | 2015-11-11 |
Family
ID=54469948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520437362.7U Active CN204755236U (en) | 2015-06-24 | 2015-06-24 | Construction improvement's reciprocating vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204755236U (en) |
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2015
- 2015-06-24 CN CN201520437362.7U patent/CN204755236U/en active Active
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