CN2230831Y

CN2230831Y - Hydraulic reciprocating diaphragm vacuum pump set

Info

Publication number: CN2230831Y
Application number: CN 94218547
Authority: CN
Inventors: 张庆玉; 穆玉芳
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-08-24
Filing date: 1994-08-24
Publication date: 1996-07-10
Anticipated expiration: 2004-08-24

Abstract

The utility model relates to an oil pressure reciprocating type diaphragm vacuum pump set which is vacuum obtaining equipment with high pumping speed, high working vacuum degree and ability of removing water vapor through pumping. The utility model is characterized in that a piston rod in an oil pressure reciprocating driving mechanism is utilized to drive diaphragm pistons in two vacuum chambers at both ends of an oil pressure cylinder to make reciprocating movement to obtain coarse vacuum with high pumping speed, and a small-sized high vacuum pump is utilized as a back stage pump to pump out residual gas in the vacuum chambers after gas discharge via the compression of the diaphragm pistons to increase the obtained vacuum degree. Besides, two limiting reversing switches are utilized to control all controllable electromagnetic vacuum valves, gas discharging valves and electric control hydraulic operating valves to complete the work of the utility model.

Description

Oil pressure reciprocating vacuum diaphragm pump unit

The oil pressure reciprocating vacuum diaphragm pump unit that the utility model relates to is a kind ofly to have big pumping speed, working vacuum height, and can extract the novel evacuated acquisition equipment of water vapor, has advantages such as simple in structure, easy to manufacture, reliable.

Popularization and application along with vacuum technique, use in each production department, in large-scale vacuum filtration, vacuum drying, vacuum concentration, vacuum cooling, the vacuum mass transport equal vacuum production technology, all the big pumping speed of exigence, rough vacuum (degree of vacuum is the 10-0.1 millimeter of mercury), extract the pumping equipment of water vapor.But the Manufacturing Status of present China pumping equipment, can not satisfy its needs, because all types of oil-sealed rotary pumps not only can't resolve the requirement that big pumping speed obtains vacuum, more can't resolve the technical problem that directly extracts water vapor, Nash hytor does not reach the requirement of working vacuum again, and this situation has influenced the development of producing.

The utility model mainly contains: oil pressure back and forth phoresys part and (comprises fuel tank, oil pump, defeated, return line, electric-controlled hydraulic is handled and is cut down, oil cylinder, piston, piston rod, compositions such as limit reverser), the prime coarse vacuum obtains partly (to comprise vacuum chamber, diaphragm piston, vacuum line, the controllable electromagnetic vacuum is cut down, gas exhaust piping, the controllable electromagnetic exhaust such as cuts down at composition), back level high vacuum obtains part and (comprises small-sized machine vacuum pump or oil ring vacuum pump, vacuum tank, vacuum gauge, vacuum line, the controllable electromagnetic vacuum such as cuts down at composition) etc. partly form.

The purpose of this utility model is achieved in that utilization can do the piston rod in the reciprocal driving section of oil pressure of high-power reciprocal transmission, drive diaphragm piston to-and-fro motion in vacuum chamber, finish big pumping speed and extract gas acquisition coarse vacuum, utilize small-sized machine vacuum pump or oil ring vacuum pump to make back level pump again, extract after vacuum chamber is by the diaphragm piston compression exhaust and retain gas, improve the degree of vacuum that obtains.

Structure of the present utility model and dynamic operation process 1 are described below in conjunction with the accompanying drawings:

43,44 diaphragm of rubber are airtight to be fastened on 42, the neutral position of 16 vacuum chambers, 40 working oil are through 41 oil pumps in 39 fuel tanks, 38 transport pipe, 35 electric-controlled hydraulics are handled and are cut down, again through 37 transport pipe, when the right-hand member of 11 oil cylinders is pressed into 11 oil cylinders, just promote 10 pistons together with the right-to-left motion in 11 oil cylinders of 5 piston rods, the 11 in-oil cylinder working oil on the 10 piston left sides are through 20 return tubes, 35 automatically controlled liquid are handled and are cut down, flow back in 39 fuel tanks, 5 piston rods are together with 4 simultaneously, 15 diaphragm piston are respectively 42, right-to-left motion in 16 vacuum chambers, in this case, 42,4 of 16 vacuum chambers, obtain the chamber for vacuum in the right chamber of 15 diaphragm piston, by 7,17 controllable electromagnetic vacuum are cut down and 9 vacuum tube roads, finish the work that extracts gas, 42,4 of 16 vacuum chambers, in the left side chamber of 15 diaphragm piston is the air compression chamber, by 2,14 outlet pipes and 1, discharge is cut down in 12 controllable electromagnetic exhausts, when 5 piston rods move to 42 vacuum chamber left ends together with 4 and 15 diaphragm piston, when the left end of 5 piston rods touches 21 spacing reverseres, make it send electrical signal immediately, make 35 electric-controlled hydraulics handle the work that stops through 37 pipeline roads fuel feeding in 11 oil cylinders of cutting down, 4 and 15 diaphragm piston stop motions this moment; 7 and 17 controllable electromagnetic vacuum are cut down and 1 and 12 controllable electromagnetic exhausts are cut down and closed; 25 and 33 controllable electromagnetic vacuum are cut down unlatching, such 30 vacuum pumps cut down respectively the left chamber of 42 and 16 vacuum chambers are bled through 28 vacuum tanks, 26 vacuum lines, 25 and 33 controllable electromagnetic vacuum, cut down respectively the left chamber of 42 and 16 vacuum chambers is bled depositing 33 controllable electromagnetic vacuum, the gas that retains is extracted the degree of vacuum of discharging the raising acquisition, after the time-delay drawing that reaches setting removes the time of gas, just make 25 and 33 vacuum cut down door automatically and close; 3 and 13 controllable electromagnetic vacuum are cut down unlatching; A unlatching is cut down in 8 and 19 controllable electromagnetic exhausts, 35 electric-controlled hydraulics are handled and are cut down action simultaneously, working oil is pressed in 11 oil cylinders through the left end of 24 pipeline roads from 11 oil cylinders, promote 10 pistons together with the motion from left to right in 11 oil cylinders of 5 piston rods, the working oil on the right footpath 31 return tubes in 11 oil cylinders, 35 electric-controlled hydraulics are handled to cut down and are flowed back in 39 fuel tanks, this moment, 5 piston rods were together with the motion from left to right in 42 and 16 vacuum chambers respectively of 4 and 15 diaphragm piston, the chamber, right ventricle of 42 and 16 vacuum chambers is become be the air compression chamber, gas cuts down discharge through 6 and 18 outlet pipes and 8 and 19 controllable electromagnetic exhausts; 42 become vacuum to obtain the chamber with the left chamber of 16 vacuum chambers, through 3 and 13 controllable electromagnetics cut down, 9 vacuum lines finish the work that extracts gas, when 5 piston rod movements when 16 vacuum chamber right-hand members touch 32 spacing reverseres, make it send electrical signal immediately, 35 electric-controlled hydraulics are handled cut down and stopped by 24 transport pipe to 11 oil cylinder fuel feeding 4 and 15 diaphragm piston stop motions this moment; 8 and 19 controllable electromagnetic exhausts are cut down and are closed, 3 and 13 controllable electromagnetic vacuum are cut down door and closed; 22 and 36 ELECTROMAGNETIC VACUUM are cut down a unlatching, such 30 vacuum pumps cut down respectively right ventricle's chamber pumping to 42 and 16 vacuum chambers through 28 vacuum tanks, 26 vacuum lines, 22 and 33 controllable electromagnetic vacuum, when the time-delay drawing that reaches setting removes gas after the time, 22 and 33 controllable electromagnetic vacuum are cut down door and are closed; 7 and 17 controllable electromagnetic vacuum are cut down unlatching; Unlatching is cut down in 1 and 12 controllable electromagnetic exhausts, 35 electric-controlled hydraulics are handled and are cut down action simultaneously, working oil is pressed in 11 oil cylinders through the right-hand member of 37 pipeline roads from 11 oil cylinders, promote 10 pistons together with the right-to-left motion in 11 oil cylinders of 5 piston rods, repeat aforesaid working state again, the work that goes round and begins again so just can reach the purpose of this utility model.

One of major character of the present utility model is the piston rod in oil pressure to-and-fro motion part, be to stretch to the outside from the two ends of oil cylinder, every end all connects a diaphragm piston makes its to-and-fro motion in vacuum chamber, this simple in structure, compactness can make the utility model to large scale development again.

The utility model major character again is that a diaphragm piston all is installed in two vacuum chambers, diaphragm piston has telescopic resilience by one, and the diaphragm of rubber of impermeable gas and the two ends that two piston plates are fastened on piston rod are formed again, the periphery of its diaphragm of rubber is the airtight intermediate portion that is fastened on vacuum chamber, in the process of diaphragm piston to-and-fro motion acting in vacuum chamber, be not cooperate the motion that requires each other, so this simple in structure, requirement on machining accuracy is low, reliable.

It is that back level vacuum pump is to have adopted small-sized machine vacuum pump or oil ring vacuum pump that the utility model also has a major character, only be used for extracting in vacuum chamber by the gas that retains behind the diaphragm piston compression exhaust, improve the degree of vacuum that obtains, and can realize extracting water vapour.

The utility model major character again is to handle unlatching, the action of cutting down of closing down and commutate at the electric-controlled hydraulic that 4 controllable electromagnetic exhausts that 8 controllable electromagnetic vacuum of installing on the forward and backward two-stage vacuum pipeline are cut down and installed two vacuum chamber bi-side are cut down and installed on defeated, return line, all is to have adjustable deferred action function.

Another major character of the utility model is in the central position of the outer side surface of two vacuum chambers a spacing reverser to be installed respectively, when piston rod is travelling forward when touching spacing reverser, just send electrical signal immediately, the controllable electromagnetic vacuum cut down cut down with exhaust and electric-controlled hydraulic is handled to cut down and controlled, change its working state.

Claims

1, oil pressure reciprocating vacuum diaphragm pump unit comprises being handled by a fuel tank, oil pump, oil cylinder, piston rod, defeated return line, automatically controlled liquid and cuts down and the reciprocal driving section of oil pressure that two spacing reverseres etc. are formed; Comprise by two vacuum chambers, diaphragm piston and controllable electromagnetic vacuum cut down with exhaust cut down, prime coarse vacuum that vacuum line etc. is formed obtains part; Comprise that the back level high vacuum of forming such as cutting down by small-sized machine vacuum pump or oil ring pump, vacuum tank, vacuum line, controllable electromagnetic vacuum obtains partly etc., it is characterized in that two vacuum chambers and oil cylinder linkage structure are integral, two diaphragm piston in two vacuum chambers are connected to the two ends of piston rod, the intermediate portion that is fastened on vacuum chamber that the periphery of the diaphragm of rubber of diaphragm piston is airtight, minipump, by vacuum tank, vacuum line, the controllable electromagnetic vacuum is cut down, and the bi-side by vacuum chamber are communicated with the vacuum chamber inner chamber again.

2, vacuum diaphragm pump unit according to claim 1, it is characterized in that, diaphragm piston has the diaphragm of rubber of telescopic resilience and two piston plates by impermeable gas and is fastened on the piston rod two ends and forms, and the periphery of diaphragm of rubber is the airtight intermediate portion that is fastened on vacuum chamber.

3, vacuum diaphragm pump unit according to claim 1 is characterized in that, two spacing reverseres are mounted in the central position of each vacuum chamber outer side surface.