CN100491727C

CN100491727C - Hydraulic controller of double acting reciprocating pump

Info

Publication number: CN100491727C
Application number: CN 200710008571
Authority: CN
Inventors: 陈炜; 黄林玲
Original assignee: Fujian Medical University
Current assignee: Fujian Medical University
Priority date: 2007-02-08
Filing date: 2007-02-08
Publication date: 2009-05-27
Anticipated expiration: 2027-02-08
Also published as: CN101012825A

Abstract

The invention relates to a dual-power reciprocating pump hydraulic controller, characterized in that: the invention comprises a frame with dual-end plug cylinder M and N, and a conjuncted valve; wherein, the conjuncted valvce has a longitudinal valve whose upper and lower parts have two main valve openings A1 and B1 at one side to connect the liquid entrances of M and N; another side has steering valve openings A2 and A3 relative to the main valve opening A1, and steering valve openings B2 and B3 relative to the main valve opening B1; the longitudinal valve has a reciprocal steering valve element whose upper and lower parts have the T-shaped duplex selecting channels relative to the valve openings A1, A2, A3, B1, B2, and B3. The invention has compact structure and easy control.

Description

Hydraulic controller of double acting reciprocating pump

Technical field

The present invention relates to a kind of hydraulic controller of double acting reciprocating pump.

Background technique

In the patent No. [200610135377.3] disclosed " continuous free flow electrophoresis device that a plurality of specific sub-chambers of being separated by film constitute ", striding film liquid stream (electric osmose, pressure reduction cause) different protein will be mixed again between electrophoresis meter Nei Geya chamber, or separating rate slows down, therefore, the inventor adopts " peripheral passage closure methods " to eliminate this and strides film liquid stream.This method must be used double acting reciprocating pump, under the situation that does not change pressure in the storage bottle, takes out liquid in storage bottle, imports fresh buffer solution simultaneously.

But, it is to rely on the pressure reduction of valve both sides to promote that the one-way valve of conventional reciprocating pump opens and closes, Jing Mi one-way valve is to the susceptibility of pressure reduction reaction difference slightly all again, transfer valve may occur and open (closing), delivery valve also is in the state of cutting out (opening), though have only moment, but still can cause the input of pump, output flow not to wait, make liquid measure increase or minimizing in storage bottle, foreign protein chamber or the secondary separation chamber, thereby produce the liquid stream of striding film.Therefore, the special double acting reciprocating pump of essential use.

Summary of the invention

Purpose of the present invention provides a kind of hydraulic controller of double acting reciprocating pump, and this hydraulic controller of double acting reciprocating pump is compact structure not only, control easy, high working efficiency, and be easy to disassembly, cleaning and maintenance.

The object of the present invention is achieved like this: this hydraulic controller of double acting reciprocating pump, it is characterized in that: comprise support, has double end plunger case M, the reciprocating type double end pump housing and the conjuncted valve of N, described conjuncted valve has a vertical valve body, vertically on the valve body, bottom one side be provided with two respectively with plunger case M, the primary valve A1 that N liquid in-out mouth is connected, B1, opposite side is provided with the commutation valve port A2 corresponding to primary valve A1, A3 and corresponding to the commutation valve port B2 of primary valve B1, B3, be provided with a reciprocating reversing spool in described vertical valve body, on the described reciprocating reversing spool, the bottom is respectively equipped with corresponding to primary valve A1 and commutation valve port A2, A3 and primary valve B1 and commutation valve port B2, the class T shape duplex position selector channel of B3.

Distinguishing feature of the present invention is: the commutation at double acting reciprocating pump two is selected to be designed to by a conjuncted valve control, and compact structure is not only controlled easyly, and has improved working efficiency.

Simultaneously, overcome tradition and be simultaneity and the characteristics that wait flow that reciprocating pump that one-way valve opens and closes Driving force is difficult to accurately control input output, accurately controlled the complete equivalent of reciprocating pump input output any time with pressure reduction.

In addition, this apparatus structure is reasonable in design, under the situation that guarantees precision, has taken into full account the biomedical device of requirement use to(for) easy cleaning, is easy to disassembly, cleaning and maintenance.

Description of drawings

Fig. 1 is the linkage structure schematic representation of the embodiment of the invention.

Fig. 2 is the work schematic representation of the embodiment of the invention.

Fig. 3 is A-A sectional view of Fig. 2.

Embodiment

Hydraulic controller of double acting reciprocating pump of the present invention, it is characterized in that: comprise support 1, has double end plunger case M, the reciprocating type double end pump housing 2 and the conjuncted valve 3 of N, described conjuncted valve 3 has a vertical valve body 4, vertically on the valve body 4, bottom one side be provided with two respectively with plunger case M, the primary valve A1 that N liquid in-out mouth is connected, B1, opposite side is provided with the commutation valve port A2 corresponding to primary valve A1, A3 and corresponding to the commutation valve port B2 of primary valve B1, B3, be provided with a reciprocating reversing spool 5 in described vertical valve body 4, on the described reciprocating reversing spool 5, the bottom is respectively equipped with corresponding to primary valve A1 and commutation valve port A2, A3 and primary valve B1 and commutation valve port B2, the class T shape duplex

position selector channel

61 and 62 of B3.

The traffic direction of the double end plunger 7 of the above-mentioned reciprocating type double end pump housing 2 parallels with the traffic direction of conjuncted valve reciprocating reversing spool 5, described double end plunger 7 middle parts are provided with back and forth dials handle 8, described reciprocating reversing spool 5 is provided with the valve control device 9 with its interlock, back and forth be provided with reciprocal actuator 10 between group handle 8 and the valve control device 9, back and forth a side channel mouth of actuator 10 is used for through back and forth dialling the 7 back and forth operations of handle 8 control double end plungers, described valve control device 9 is provided with a pair of and reciprocal perpendicular bullet tongue assembly 11 of actuator 10 traffic directions, described bullet tongue assembly 11 has bullet tongue flexible die cavity 12 and the bullet tongue 13 of opening towards reciprocal actuator operation passage, described two play the flexible die cavity 12 of tongue is connected through connection strap 14, described bullet tongue 13 has stretches the inclined-plane 15 that places on the reciprocal actuator operation passage when free state, this inclined-plane 15 becomes the obtuse angle with bullet tongue baffle plate 16 outer side surfaces that stretch between the die cavity opening at described two bullet tongues, back and forth the opposite side correspondence of actuator 10 is provided with two conjuncted valve commutation shift forks 17 that parallel, more than or equal to the width that plays tongue 13 external parts, can stir when actuating valve control mechanism 9 drives 5 operations of reciprocating reversing spools and play the tongue 13 external parts outside by described commutation shift fork 17 perpendicular to the width of traffic direction for described two commutation shift forks 17.

Above-mentioned support 1 is provided with in order to adhesive and back and forth dials handle so that it keeps the plunger magnetic positioning device 18 of operational limit position.

Above-mentioned support 1 is provided with in order to adhesive valve control device 9 so that reciprocating reversing spool 5 commutation backs keep the two-way magnetic attracting positioning device 19 of commutation stations, and two-way magnetic attracting positioning device 19 is arranged on the outside that plays tongue baffle plate 16 and plays between the flexible die cavity 12 of tongues at two.

During work, back and forth carry on the actuator 10, touch the bullet tongue 13 of valve control device 9 earlier, to carry on the valve control device 9, three-way valve communicates from valve port A1, A3 gradually, and the state that valve port B1, B3 communicate is removed, at this moment, plunger stationary platen 4 is because of being held fixed-site by plunger magnetic positioning device 18, and it is static that plunger keeps.

Carry in the continuation along with reciprocal actuator 10, play tongue 13 under the drag effect that plays tongue baffle plate 16 gradually in the flexible die cavity 12 of retraction bullet tongue, the surface of contact that reciprocal actuator 10 and bullet tongue are 13 becomes very little, the long-term back bullet tongue 13 that uses is worn, back and forth actuator 10 may just not disengage with bullet tongue 13 mentioning the position on the valve control device 9, but at this moment two-way magnetic attracting positioning device 19 leans on the elongation of connected spring and moves downward, valve control device 9 is held, lean on the pulling force of spring then, continue to carry on the pulling valve control device 9, and abut against on the two-way magnetic attracting positioning device 19, three-way valve becomes valve port A1, A2 communicates and valve port B1, B2 communicates, at this moment, double end plunger 7 is still held and fixed-site by plunger magnetic positioning device 18, and it is static that plunger keeps.

Back and forth actuator 10 is carried on continuing, and crosses and plays tongue 13, and at this moment, two-way magnetic attracting positioning device 19 holds valve control device 9, makes three-way valve keep the state that valve port A1, A2 communicate and valve port B1, B2 communicate.Carry in the continuation along with reciprocal actuator 10, it contacts with reciprocal group handle 8, and pulling is back and forth dialled on the handle 8 and carried, and liquid is sent in the upper plug release, and meanwhile, the lower plunger pull-up is with the liquid suction of equivalent.

Back and forth in the process that actuator 10 presses down, it touches the bullet tongue 13 of valve control device 9 earlier, valve control device 9 is pressed down, three-way valve communicates from valve port A1, A2 gradually, the state that valve port B1, B2 communicate is removed, at this moment, the back and forth group handle 8 on the double end plunger 7 is because of being held fixed-site by plunger magnetic positioning device 18, and it is static that plunger keeps.

Along with reciprocal actuator 10 continue press down, play tongue 13 gradually in the flexible die cavity 12 of retraction bullet tongue, at this moment, two-way magnetic attracting positioning device 19 holds valve control device 9, by the pulling force of spring, continuing pulling valve control device 9 presses down, and abut against on the two-way magnetic attracting positioning device 19, three-way valve becomes that valve port A1, A3 communicate and valve port B1, B3 communicate, at this moment, double end plunger 7 is still held and fixed-site by plunger magnetic positioning device 18, and it is static that plunger keeps.

Back and forth actuator 10 continue press down, it is crossed and plays tongue 13, at this moment, two-way magnetic attracting positioning device 19 holds valve control device 9, makes three-way valve keep the state that valve port A1, A3 communicate and valve port B1, B3 communicate.Along with reciprocal actuator 10 continue press down, it contact with back and forth dialling handle 8, promotes back and forth to dial handle 8 and presses down, lower plunger is released, and liquid is sent, meanwhile, the upper plug pull-up is with the liquid suction of equivalent.

The guiding theory of whole working method is: in the process of valve commutation, it is static that plunger keeps, and after the valve commutation was finished, plunger is setting in motion.All processes are only finished by the simple to-and-fro motion of reciprocal actuator.

Claims

1, a kind of hydraulic controller of double acting reciprocating pump, it is characterized in that: comprise support, has double end plunger case M, the reciprocating type double end pump housing and the conjuncted valve of N, described conjuncted valve has a vertical valve body, vertically on the valve body, bottom one side be provided with two respectively with plunger case M, the primary valve A1 that N liquid in-out mouth is connected, B1, opposite side is provided with the commutation valve port A2 corresponding to primary valve A1, A3 and corresponding to the commutation valve port B2 of primary valve B1, B3, be provided with a reciprocating reversing spool in described vertical valve body, on the described reciprocating reversing spool, the bottom is respectively equipped with corresponding to primary valve A1 and commutation valve port A2, A3 and primary valve B1 and commutation valve port B2, the class T shape duplex position selector channel of B3.

2, hydraulic controller of double acting reciprocating pump according to claim 1, it is characterized in that: the traffic direction of the double end plunger of the described reciprocating type double end pump housing parallels with the traffic direction of conjuncted valve reciprocating reversing spool, described double end plunger middle part is provided with back and forth dials handle, described reciprocating reversing spool is provided with the valve control device with its interlock, back and forth be provided with reciprocal actuator between group handle and the valve control device, back and forth a side channel mouth of actuator is used for back and forth moving through back and forth dialling handle control double end plunger, described valve control device is provided with a pair of and reciprocal perpendicular bullet tongue assembly of actuator traffic direction, described bullet tongue assembly has bullet tongue flexible die cavity and the bullet tongue of opening towards reciprocal actuator operation passage, described two play the flexible die cavity of tongue is connected through connection strap, described bullet tongue has stretches the inclined-plane that places on the reciprocal actuator operation passage when free state, this inclined-plane becomes the obtuse angle with the bullet tongue baffle plate outer side surfaces that stretch between the die cavity opening at described two bullet tongues, back and forth the opposite side correspondence of actuator is provided with two conjuncted valve commutation shift forks that parallel, more than or equal to the width that plays the tongue external part, can stir when the actuating valve control mechanism drives the operation of reciprocating reversing spool and play the tongue external part outside by described commutation shift fork perpendicular to the width of traffic direction for described two commutation shift forks.

3, hydraulic controller of double acting reciprocating pump according to claim 2 is characterized in that: described support is provided with in order to adhesive and back and forth dials handle so that plunger keeps the plunger magnetic positioning device of operational limit position.

4, hydraulic controller of double acting reciprocating pump according to claim 3, it is characterized in that: described support is provided with in order to the adhesive valve control device so that reciprocating reversing spool commutation back keeps the two-way magnetic attracting positioning device of commutation station, and two-way magnetic attracting positioning device is arranged on the outside that plays the tongue baffle plate and plays between the flexible die cavity of tongues at two.