CN205876832U - Environment -friendly vacuum unit - Google Patents

Abstract

The utility model discloses an environment -friendly vacuum unit, its technical scheme main points are including buffer tank and circulation fluid basin, fixedly connected with flange between buffer tank and the circulation fluid basin, the one end of being close to the buffer tank in the flange still is equipped with the basket of straining of back cover, strain the section of thick bamboo of straining that the basket endotheca was equipped with the back cover, it all is the tubular structure setting to strain the basket and strain a section of thick bamboo, strain the basket and strain a section of thick bamboo and work out by the nickel silk, the mesh number of straining the basket is less than the mesh number of straining a section of thick bamboo, strain a section of thick bamboo insert the inner wall of straining after -filtration basket in the basket with the outer wall strained tin between leave the space that is used for volume impurity. The solid impurity that mixes in the fluid can be strained the basket and strained section of thick bamboo interception to avoid the solid impurity to overstock in the circulation fluid storage tank, neither can increase burden and produce wearing and tearing its internal plant, also can more not be favorable to the use of circulation fluid at circulation fluid storage tank bear building -up dirt.

Description

Environment-friendly type vacuum pump set

Technical field

This utility model relates to a kind of pumped vacuum systems, more specifically, it relates to a kind of environment-friendly type vacuum pump set.

Background technology

Water-jet pump is conventional chemical industry equipment, and it has simple in construction, cost of equipment is few, maintenance cost is low, behaviour Make the features such as convenient, thus be widely used, be mainly used in vacuum distilling, be concentrated in vacuo, vacuum handling, vacuum drying In producing etc. technique.

At present, notification number is that the Chinese patent of CN202883505U discloses a kind of water complete vacuum pump set of injection, and it wraps Including water tank, surge tank, centrifugal pump, centrifugal pump water tank connects, and centrifugal pump connects vacuum pump, and vacuum pump includes union joint and venturi Pipe, Venturi tube connects with water tank, and surge tank upper end is provided with air inlet, and surge tank lower end is provided with gas outlet, and gas outlet is by even Adapter connects check-valves, and check-valves is connected with union joint, and surge tank includes inlet chamber, condensation chamber and outlet chamber, enters mouth and goes out QI KOU is separately positioned on inlet chamber and outlet chamber position, is provided with condensation tubulation in condensation chamber, and the upper/lower terminal of condensation tubulation is respectively Connect with inlet chamber, outlet chamber；Condensation chamber upper end is provided with outlet, and condensation chamber lower end is provided with water inlet, is provided with cooling in water tank Coil pipe, the lower port of cooling coil is cooling water inlet, and cooling coil upper port is connected by the water inlet of connecting tube with condensation chamber Logical.Although this vacuum pump set can absorb substantial amounts of condensable property gas, the increase speed of evacuation and rate of air sucked in required, but flow through venturi Mixed flow know from experience directly be circulated to lower section circulation fluid storage tank in, the solid impurity in fluid-mixing can be made to overstock at circulation fluid In storage tank, thus cause solid impurity to be easily generated abrasion through precision equipments such as water circulating pumps, too increase the weight of circulatory mediator But it is unfavorable for improving cooling effect, additionally, solid impurity overstocks is being also easy to fouling at the bottom of circulation fluid storage tank, is unfavorable for circulation fluid Use.

Utility model content

The deficiency existed for prior art, the purpose of this utility model is to provide a kind of environmental protection with filtration Type vacuum pump set.

For achieving the above object, this utility model provides following technical scheme: a kind of environment-friendly type vacuum pump set, includes It is equipped with condenser in surge tank and circulation fluid basin, described surge tank and circulation fluid basin, is provided with in described surge tank and follows The Venturi tube of ring liquid basin connection, described circulation fluid basin includes and the circulation fluid that it is interior can be transported to following of Venturi tube Ring mechanism, is covered with exhaust pipe outside described Venturi tube, the bottom of described exhaust pipe is conflicted close with surge tank diapire Envelope is arranged, and the port of export of described Venturi tube extends to after penetrating surge tank diapire above circulation fluid basin, and described waste gas is arranged Put and between the opening of pipe and the outer wall of Venturi tube, leave airspace, below the port of export of described Venturi tube, be provided with foam removal Silk screen, is fixedly connected with adpting flange between described surge tank and circulation fluid basin, described adpting flange includes conduction pipe, institute Stating conduction pipe two ends to be equipped with and can fix the connection dish being connected respectively with surge tank or circulation fluid basin, described foam removal silk screen is fixed One end of close circulation fluid basin in being arranged on adpting flange, in described adpting flange, the one end near surge tank is additionally provided with back cover Filter basket, be arranged with the filter cylinder of back cover in described filter basket, described filter basket is all arranged in tubular structure with filter cylinder, described filter basket and filter Cylinder is worked out by nickel wire, and the mesh number of described filter basket is less than the mesh number of filter cylinder, and in described filter cylinder insertion filter basket, rear filter basket is interior The opening of the space for volume impurity, described filter basket and filter cylinder is left all towards Venturi tube between wall and the outer wall of filter cylinder The port of export, the opening of described filter basket and filter cylinder is equipped with flange mounting ring, described adpting flange and the tank connected one end of buffering Being provided with the step annular groove embedded for flange mounting ring, the flange mounting ring of described filter cylinder is connected to the diapire of surge tank, described filter The flange mounting ring of basket is connected to the diapire of step annular groove, is provided with between diapire and the flange mounting ring of filter cylinder of described surge tank Sealing ring, is provided with sealing ring between flange mounting ring and the flange mounting ring of filter cylinder of described filter basket, the flange peace of described filter basket Being provided with sealing ring between dress ring and the diapire of step annular groove, the degree of depth of described step annular groove adds three less than two flange mounting rings The thickness of sealing ring.

This utility model is further arranged to: the sidewall of described adpting flange is provided with mirror mouth, and described mirror mouth includes Have and fix the inspection section being connected with adpting flange sidewall, and the lens of inspection section opening and button Jing Gai, described button Jing Gai and Inspection section opening is equipped with the mounting groove for being embedded lens, is all embedded with the sealing at laminating lens two ends in described mounting groove Circle, the opening of described inspection section is snapped with clip outside button Jing Gai.

This utility model is further arranged to: be convexly equipped with the first ring-type connection on the bottom outside wall of described surge tank Edge, the upper outside wall of described circulation fluid basin is convexly equipped with the second ring-type connection edge, and described first connects edge and connection method The connection dish of blue one end is the outer clip that is snapped with after abutting, after described second connection edge abuts with the connection dish of the adpting flange other end Also it is snapped with clip outside.

This utility model is further arranged to: the condenser in described circulation fluid basin is respectively arranged at two ends with and enters for freezing liquid Or the first conveying pipe gone out, the lateral wall of described circulation fluid basin is provided with the communicating pipe being conducted to outside for the first conveying pipe, Being convexly equipped with the 3rd connection edge on the opening lateral wall of described communicating pipe, the described 3rd connects edge connection connection flange, described Being folded with sealing ring between connection flange and the 3rd connection edge, the opening of described sealing ring and the first conveying pipe is fixing to be connected.

This utility model is further arranged to: described connection flange includes intercommunicating pore, and the internal diameter of described intercommunicating pore is more than The internal diameter of the first conveying pipe.

This utility model is further arranged to: the condenser in described surge tank is respectively arranged at two ends with for freezing liquid into or out The second conveying pipe, described second conveying pipe runs through the sidewall of surge tank, the lateral wall of described surge tank is covered with flange even Logical cylinder, the opening of described flange connection cylinder seals with the lateral wall of surge tank and arranges, and described flange connection barrel cover is located at second The opening part of conveying pipe.

This utility model is further arranged to: the internal diameter of described flange connection cylinder is more than the internal diameter of the second conveying pipe.

This utility model is further arranged to: go out in described surge tank in the first conveying pipe and the circulation fluid basin of freezing liquid Entering the second conveying pipe connection of freezing liquid, the first conveying pipe entering freezing liquid in described surge tank is inlet, described circulation fluid The the second conveying pipe going out freezing liquid in basin is liquid outlet.

This utility model is further arranged to: the condenser in described circulation fluid basin and surge tank all includes graphite plate Pipe.

This utility model is further arranged to: the inwall of described circulation fluid basin is coated with protection liner, in described protection Lining extends to each open end of circulation fluid basin, and described protection liner is made up of PE material.

In sum, this utility model has the advantages that nickel wire is to have ferromagnetic metallic element, and has There is excellent corrosion resistance, be to manufacture the raw material that drainage screen is first-selected.Therefore can be by fluid-mixing by filter basket and filter cylinder Solid impurity can be held together by pocket, thus avoid solid impurity to overstock in circulation fluid storage tank, the most also can be produced by nickel wire More small ferrous contaminants is played adsorption by magnetic, the most more can improve the filter effect of filter basket and filter cylinder further, from And the solid impurity in circulation fluid is removed clean, advantageously reduce the burden of internal unit, it is to avoid produce because of solid impurity Abrasion, also at circulation fluid storage tank bear building-up dirt, thus will not reduce the wash number of circulation fluid storage tank, reduce the work of staff Measure, and the cleaning that repeats being more beneficial for circulation fluid uses.

Accompanying drawing explanation

Fig. 1 is the cross-sectional view of environment-friendly type vacuum pump set；

Fig. 2 is A portion structure for amplifying schematic diagram in Fig. 1；

Fig. 3 is B portion structure for amplifying schematic diagram in Fig. 1；

Fig. 4 is C portion structure for amplifying schematic diagram in Fig. 1.

Reference: 1, surge tank；11, Venturi tube；12, exhaust pipe；13, airspace；14, first connects Edge；15, flange connection cylinder；2, circulation fluid basin；21, cycling mechanism；22, second connects edge；23, communicating pipe；231, the 3rd even Connect edge；24, connection flange；241, intercommunicating pore；3, condenser；31, the first conveying pipe；311, sealing ring；32, the second conveying pipe； 33, inlet；34, liquid outlet；35, graphite coil pipe；4, adpting flange；41, conduction pipe；42, connection dish；43, foam removal silk screen； 44, filter basket；45, filter cylinder；46, space；47, flange mounting ring；48, step annular groove；49, mirror mouth；491, inspection section；492, saturating Mirror；493, button Jing Gai；494, mounting groove；5, sealing ring；6, clip；7, protection liner.

Detailed description of the invention

Below in conjunction with the accompanying drawings and embodiment, this utility model is further described.The most identical parts phase Same reference represents.It should be noted that the word "front", "rear" used in describing below, "left", "right", " on " and D score refers to the direction in accompanying drawing, and word " bottom surface " and " end face ", " interior " and " outward " refer respectively to towards or away from specific The direction at component geometry center.

Shown in reference Fig. 1, a kind of environment-friendly type vacuum pump set, include the surge tank 1 set gradually from top to bottom and circulation It is equipped with condenser 3 in liquid basin 2, surge tank 1 and circulation fluid basin 2, is provided with in surge tank 1 and connects with circulation fluid basin 2 Venturi tube 11, circulation fluid basin 2 includes the cycling mechanism 21 that the circulation fluid that it is interior can be transported to Venturi tube 11, circulation Mechanism 21 mainly includes connecting tube and circulating pump, and circulating pump is for leading the circulation fluid in circulation fluid basin 2 by connecting tube Enter in Venturi tube 11, then with liquefaction taken out media compatibility, then back flow back in circulation fluid basin 2, and not by liquid The exhaust pipe 12 that the incoagulable gas changed can be set by Venturi tube 11 outer housing is discharged, and incoagulable gas is from exhaust pipe 12 Opening and the outer wall of Venturi tube 11 between the airspace 13 that leaves discharge；The bottom of exhaust pipe 12 and surge tank 1 diapire is conflicted to seal and is arranged, it is to avoid incoagulable gas is again introduced in surge tank 1, and the port of export of Venturi tube 11 penetrates slow Extend to after rushing tank 1 diapire above circulation fluid basin 2, the medium of being taken out of circulation fluid Yu liquefaction is entered in circulation fluid basin 2, literary composition Foam removal silk screen 43 it is provided with, for removing being carried secretly after medium mixes by smoking of circulation fluid and liquefaction below the port of export of venturi 11 Mist.

With reference to shown in Fig. 2, being fixedly connected with adpting flange 4 between surge tank 1 and circulation fluid basin 2, adpting flange 4 includes There are conduction pipe 41, conduction pipe 41 two ends to be equipped with and can fix, with surge tank 1 or circulation fluid basin 2, the connection dish 42 being connected respectively, It is convexly equipped with ring-type first on the bottom outside wall of surge tank 1 to connect along 14, the upper outside wall of circulation fluid basin 2 is convexly equipped with Ring-type second connection is along 22, and first connects after the connection dish 42 along 14 with adpting flange 4 one end abuts and be snapped with clip 6 outward, Second connect abuts along the connection dish 42 of 22 with adpting flange 4 other end after also outer be snapped with clip 6, by clip 6 realization company Acting flange 4 is fixed be connected with surge tank 1 and circulation fluid basin 2 respectively, and during using clip 6, it is possible to convenient real Dismounting the most between the two, improves dismounting efficiency.

With reference to shown in Fig. 2, foam removal silk screen 43 is one end of close circulation fluid basin 2 in being fixedly installed on adpting flange 4, connects In flange 4, one end of close surge tank 1 is additionally provided with the filter basket 44 of back cover, is arranged with the filter cylinder 45 of back cover, filter basket 44 in filter basket 44 All arranging in tubular structure with filter cylinder 45, tubular structure can increase effective contact surface of filter basket 44 and filter cylinder 45 with circulation fluid Long-pending, the opening of filter basket 44 and filter cylinder 45 is all towards the port of export of Venturi tube 11, and the mesh number of filter basket 44 is less than filter cylinder 45 Mesh number, filter cylinder 45 leaves the space for volume impurity between inwall and the outer wall of filter cylinder 45 of rear filter basket 44 in inserting filter basket 44 46, make filter basket 44 and filter cylinder 45 realize layering and intercept solid impurity, and stored filter impurity out can be distinguished, be conducive to Improve filter efficiency and filter effect；Filter basket 44 is worked out by nickel wire with filter cylinder 45, and this is owing to nickel wire is to have ferrum The metallic element of magnetic, and there is excellent corrosion resistance, it is to manufacture the raw material that drainage screen is first-selected.Therefore by filter basket 44 Solid impurity in fluid-mixing can be held together by pocket with filter cylinder 45, thus avoid solid impurity to overstock at circulation fluid storage tank In, more small ferrous contaminants is played adsorption by the magnetic that the most also can be produced by nickel wire, the most more can improve further Filter basket 44 and the filter effect of filter cylinder 45, thus the solid impurity in circulation fluid is removed clean, advantageously reduce internal unit Burden, it is to avoid produce abrasion because of solid impurity, also at circulation fluid storage tank bear building-up dirt, thus circulation fluid storage tank will not be reduced Wash number, reduces the workload of staff, and the cleaning that repeats being more beneficial for circulation fluid uses.

With reference to shown in Fig. 2, filter basket 44 and installing of filter cylinder 45 need by being all provided with at the opening of filter basket 44 and filter cylinder 45 There is flange mounting ring 47, and one end that adpting flange 4 is connected with surge tank 1 is provided with the step ring embedded for flange mounting ring 47 Groove 48, when filter cylinder 45 inserts in filter basket 44, two flange mounting rings 47 are overlapping, and are embedded in step annular groove 48, need herein Bright: the flange mounting ring 47 of filter cylinder 45 is connected to the diapire of surge tank 1, the flange mounting ring 47 of filter basket 44 is connected to step Sealing ring 5 it is provided with between the diapire of annular groove 48, and the flange mounting ring 47 of the diapire of surge tank 1 and filter cylinder 45, filter basket 44 Sealing ring 5, the flange mounting ring 47 of filter basket 44 and step it is provided with between the flange mounting ring 47 of flange mounting ring 47 and filter cylinder 45 Being provided with sealing ring 5 between the diapire of annular groove 48, therefore filter basket 44 and filter cylinder 45 can not only pass through sealing ring 5 in installation process Realize abutting both sealings, be simultaneously connected with the sealing also being able to effectively stablize each sealing surface when flange 4 is connected with surge tank 1 Effectiveness, so allows to improve this sealing, the degree of depth of step annular groove 48 is set smaller than two flange mounting rings 47 and adds three The thickness of individual sealing ring 5, such adpting flange 4 is able to ensure that sealing ring 5 is in compression when abutting fixing connection with surge tank 1 Under state, be conducive to improving sealing effectiveness.

With reference to shown in Fig. 2, the sidewall of adpting flange 4 is provided with mirror mouth 49, and mirror mouth 49 includes and adpting flange 4 side The inspection section 491 of connection fixed by wall, and the lens 492 of inspection section 491 opening run through even with button mirror lid 493, inspection section 491 The sidewall of acting flange 4, button mirror lid 493 and the opening of inspection section 491 be equipped with the mounting groove 494 for being embedded lens 492, and two All being embedded with the sealing ring 5 at laminating lens 492 two ends in individual mounting groove 494, sealing ring 5 improves the sealing of junction, observes The opening of cylinder 491 is snapped with clip 6 outside button mirror lid 493.The inside feelings of adpting flange 4 it are able to observe that through mirror mouth 49 Condition, intercepted the amount of impurity such that it is able to be easy to staff and dismantle cleaning in time in both can having observed filter basket 44 and filter cylinder 45；This It also is able to outward observe through mirror mouth 49 working condition of Venturi tube 11, facilitates the working order of understanding equipment.

With reference to shown in Fig. 3, it is defeated that the condenser 3 in circulation fluid basin 2 is respectively arranged at two ends with for freezing liquid into or out first Pipe 31, the lateral wall of circulation fluid basin 2 is sent to be provided with the communicating pipe 23 being conducted to outside for the first conveying pipe 31, communicating pipe 23 Being convexly equipped with the 3rd connection on opening lateral wall along 231, the 3rd connects to connect along 231 and has connection flange 24, connection flange 24 with 3rd connection is folded with sealing ring 311 between 231, and sealing ring 311 is fixing with the opening of the first conveying pipe 31 to be connected.Assemble During, sealing ring 311 is folded in connection flange 24 and is connected between 231 with the 3rd, then connection flange 24 and the 3rd is connected Connecing along 231 fixing connections, the fixing mode connected both can use bolt, it is possible to uses clip 6；This structure can facilitate first Conveying pipe 31 connects with extraneous conveyance conduit, and connects post-condenser 3 and can fix with circulation fluid basin 2 and be connected, thus carries The sealing during conveying of high freezing liquid and sealing stability.

Additionally, connection flange 24 includes intercommunicating pore 241, the internal diameter of intercommunicating pore 241 carries the internal diameter of pipe 31 more than first, When the first conveying pipe 31 is liquid feeding end, it is possible to play the effect converged by freezing liquid, thus improve the flowing velocity of freezing liquid, Improve cooling effectiveness；And the first conveying pipe 31 is when be liquid outlet, it is possible to alleviate connection flange 24 and first and carry pipe 31 junction Seal pressure, thus avoid freezing liquid to leak.

With reference to shown in Fig. 4, the condenser 3 in surge tank 1 is respectively arranged at two ends with the second conveying pipe for freezing liquid into or out 32, the second conveying pipe 32 runs through the sidewall of surge tank 1, and the lateral wall of surge tank 1 is covered with flange connection cylinder 15, and flange connects The opening of cylinder 15 seals with the lateral wall of surge tank 1 and arranges, and flange connection cylinder 15 is provided with two, and covers at two respectively The opening part of the second conveying pipe 32, condenser 3 is fixed in surge tank 1, facilitates the second conveying pipe 32 by flange connection cylinder 15 Connect with extraneous conveyance conduit, and can fixing with surge tank 1 be connected after connection, thus sealing when improving freezing liquid conveying Property and seal stability.

Additionally, the internal diameter of flange connection cylinder 15 is more than the internal diameter of the second conveying pipe 32, when the second conveying pipe 32 is liquid feeding end Time, it is possible to play the effect converged by freezing liquid, thus improve the flowing velocity of freezing liquid, improve cooling effectiveness；And second is defeated When sending pipe 32 for liquid outlet, it is possible to alleviate flange connection cylinder 15 and the seal pressure of the second conveying pipe 32 junction, thus avoid Freezing liquid leaks.

During use, the first conveying pipe 31 going out freezing liquid in surge tank 1 is entered the second of freezing liquid in circulation fluid basin 2 Conveying pipe 32 connects, and the first conveying pipe 31 entering freezing liquid in surge tank 1 is inlet 33, goes out freezing liquid in circulation fluid basin 2 The second conveying pipe 32 be liquid outlet 34, be the most first inhaled in surge tank 1 owing to taking out medium, enter back into civilian mound In mix with circulation fluid in pipe 11, need stronger low temperature to make to be taken out medium herein and liquefy, therefore carry entering of pipe 31 by first Freezing liquid end is inlet 33, helps to the environment being taken out medium liquefaction, import to circulation the most again in Schilling surge tank 1 Condenser 3 in liquid basin 2, improves the utilization rate of freezing liquid.

With reference to shown in Fig. 1, the condenser 3 in circulation fluid basin 2 and surge tank 1 all includes graphite coil pipe 35, graphite plate Pipe 35 namely polybutene graphite blending and modifying compound coil pipe, has excellent anti-corrosion performance, is resistant to almost all of inorganic Jie Matter and most of organic solvent, heat transfer property is moderately good, lightweight, volume is little, install easy maintenance, less scaling, nontoxic Etc. feature, the beneficially use of condenser 3.

With reference to Fig. 1, shown in 2, the inwall of circulation fluid basin 2 is coated with protection liner 7, and protection liner 7 extends to circulation fluid Each open end of basin 2, protects liner 7 to be made up of PE material, and PE material has excellent resistance to low temperature, and odorless, Nontoxic, chemical stability is good, is resistant to the erosion of most of soda acid, and the recirculated water being thus advantageous to extend in circulation fluid basin 2 is deposited Put the time；And protection liner 7 can be made to have certain elasticity, be coated on each open end and abut sealing with pipe fitting Time, be conducive to improving sealing effectiveness.

Below being only preferred implementation of the present utility model, protection domain of the present utility model is not limited merely to above-mentioned Embodiment, all technical schemes belonged under this utility model thinking belong to protection domain of the present utility model.It is right to it should be pointed out that, For those skilled in the art, without departing from the some improvements and modifications under this utility model principle premise, These improvements and modifications also should be regarded as protection domain of the present utility model.

Claims (10)

1. an environment-friendly type vacuum pump set, is characterized in that: include surge tank (1) and circulation fluid basin (2), described surge tank And in circulation fluid basin (2), be equipped with condenser (3), (1) it is provided with in described surge tank (1) and connects with circulation fluid basin (2) Venturi tube (11), described circulation fluid basin (2) includes the circulation that the circulation fluid that it is interior can be transported to Venturi tube (11) Mechanism (21), is covered with exhaust pipe (12) outside described Venturi tube (11), the bottom of described exhaust pipe (12) is with slow Rushing the conflict of tank (1) diapire and seal setting, the port of export of described Venturi tube (11) extends to follow after penetrating surge tank (1) diapire Ring liquid basin (2) top, leaves between ventilation between opening and the outer wall of Venturi tube (11) of described exhaust pipe (12) Gap (13), is provided with foam removal silk screen (43), described surge tank (1) and circulation fluid basin below the port of export of described Venturi tube (11) (2) being fixedly connected with adpting flange (4) between, described adpting flange (4) includes conduction pipe (41), described conduction pipe (41) two End is equipped with can fix the connection dish (42) being connected, described foam removal silk screen (43) with surge tank (1) or circulation fluid basin (2) respectively One end of close circulation fluid basin (2) in being fixedly installed on adpting flange (4), near surge tank (1) in described adpting flange (4) One end be additionally provided with the filter basket (44) of back cover, be arranged with the filter cylinder (45) of back cover in described filter basket (44), described filter basket (44) with Filter cylinder (45) is all arranged in tubular structure, and described filter basket (44) is worked out by nickel wire with filter cylinder (45), described filter basket (44) Mesh number less than the mesh number of filter cylinder (45), described filter cylinder (45) inserts inwall and the filter cylinder (45) of filter basket (44) after in filter basket (44) Outer wall between leave the space (46) for volume impurity, the opening of described filter basket (44) and filter cylinder (45) is all towards venturi The port of export of pipe (11), the opening of described filter basket (44) and filter cylinder (45) is equipped with flange mounting ring (47), described connection method One end that blue (4) are connected with surge tank (1) is provided with the step annular groove (48) embedded for flange mounting ring (47), described filter cylinder (45) Flange mounting ring (47) be connected to the diapire of surge tank (1), the flange mounting ring (47) of described filter basket (44) is connected to step The diapire of annular groove (48), is provided with sealing ring between diapire and the flange mounting ring (47) of filter cylinder (45) of described surge tank (1) (5), between flange mounting ring (47) and the flange mounting ring (47) of filter cylinder (45) of described filter basket (44), it is provided with sealing ring (5), It is provided with sealing ring (5), described step ring between flange mounting ring (47) and the diapire of step annular groove (48) of described filter basket (44) The degree of depth of groove (48) adds the thickness of three sealing rings (5) less than two flange mounting rings (47).

Environment-friendly type vacuum pump set the most according to claim 1, is characterized in that: the sidewall of described adpting flange (4) is provided with Mirror mouth (49), described mirror mouth (49) includes fixes the inspection section (491) being connected, Yi Jiguan with adpting flange (4) sidewall Examining the lens (492) of cylinder (491) opening and buckle Jing Gai (493), described button Jing Gai (493) and inspection section (491) opening are equal It is provided with the mounting groove (494) for being embedded lens (492), in described mounting groove (494), is all embedded with laminating lens (492) two ends Sealing ring (5), the opening of described inspection section (491) is snapped with clip (6) outside button Jing Gai (493).

Environment-friendly type vacuum pump set the most according to claim 1, is characterized in that: on the bottom outside wall of described surge tank (1) It is convexly equipped with the first ring-type connection edge (14), the upper outside wall of described circulation fluid basin (2) is convexly equipped with ring-type second even Connecing along (22), described first connection is outer after abutting along (14) with the connection dish (42) of adpting flange (4) one end is snapped with clip (6), described second connection is also outer after abutting along (22) with the connection dish (42) of adpting flange (4) other end is snapped with clip (6).

Environment-friendly type vacuum pump set the most according to claim 1, is characterized in that: the condenser in described circulation fluid basin (2) (3) being respectively arranged at two ends with the first conveying pipe (31) for freezing liquid into or out, the lateral wall of described circulation fluid basin (2) is provided with It is conducted to the communicating pipe (23) in outside for the first conveying pipe (31), the opening lateral wall of described communicating pipe (23) is convexly equipped with the Three connect along (231), and the described 3rd connects edge (231) connection connection flange (24), and described connection flange (24) is with the 3rd even Connecing and be folded with sealing ring (311) between (231), the opening that (31) are managed in described sealing ring (311) and the first conveying is fixing even Connect.

Environment-friendly type vacuum pump set the most according to claim 4, is characterized in that: described connection flange (24) includes intercommunicating pore (241), the internal diameter of described intercommunicating pore (241) is more than the internal diameter of the first conveying pipe (31).

6. according to the environment-friendly type vacuum pump set described in claim 4 or 5, it is characterized in that: the condenser in described surge tank (1) (3) being respectively arranged at two ends with the second conveying pipe (32) for freezing liquid into or out, described second conveying pipe (32) runs through surge tank (1) Sidewall, the lateral wall of described surge tank (1) is covered with flange connection cylinder (15), described flange connection cylinder (15) opening Sealing with the lateral wall of surge tank (1) and arrange, described flange connection cylinder (15) covers at the opening part of the second conveying pipe (32).

Environment-friendly type vacuum pump set the most according to claim 6, is characterized in that: the internal diameter of described flange connection cylinder (15) is more than The internal diameter of the second conveying pipe (32).

Environment-friendly type vacuum pump set the most according to claim 6, is characterized in that: go out the of freezing liquid in described surge tank (1) One conveying pipe (31) connects with the second conveying pipe (32) entering freezing liquid in circulation fluid basin (2), enters cold in described surge tank (1) The first conveying pipe (31) freezing liquid is inlet (33), goes out the second conveying pipe (32) of freezing liquid in described circulation fluid basin (2) For liquid outlet (34).

Environment-friendly type vacuum pump set the most according to claim 1, is characterized in that: described circulation fluid basin (2) and surge tank (1) Interior condenser (3) all includes graphite coil pipe (35).

Environment-friendly type vacuum pump set the most according to claim 1, is characterized in that: the inwall coating of described circulation fluid basin (2) Protected liner (7), described protection liner (7) extends to each open end of circulation fluid basin (2), described protection liner (7) it is made up of PE material.