CN205277772U - Plunger diaphragm type measuring pump - Google Patents

Plunger diaphragm type measuring pump Download PDF

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Publication number
CN205277772U
CN205277772U CN201521053190.XU CN201521053190U CN205277772U CN 205277772 U CN205277772 U CN 205277772U CN 201521053190 U CN201521053190 U CN 201521053190U CN 205277772 U CN205277772 U CN 205277772U
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CN
China
Prior art keywords
plunger
pump head
pump
fluid passage
check valve
Prior art date
Application number
CN201521053190.XU
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Chinese (zh)
Inventor
周良
Original Assignee
德帕姆(杭州)泵业科技有限公司
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Priority to CN201521053190.XU priority Critical patent/CN205277772U/en
Application granted granted Critical
Publication of CN205277772U publication Critical patent/CN205277772U/en

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Abstract

The utility model relates to a measuring pump technical field especially relates to a plunger diaphragm type measuring pump, including pump head, check valve, cylinder liner subassembly, connector, plunger, unfamiliar subassembly, the pump head be equipped with the fluid passage no. 1 who vertically link up, fluid passage both ends all be equipped with the check valve, the connector establish at the pump head left end, the pump head be equipped with the working chamber, the cylinder liner subassembly establish at the working chamber left end, the plunger include stopper head and plunger rod, the plunger rod run through the cylinder liner subassembly and the cartridge is in the working chamber in, the stopper head install in unfamiliar subassembly, unfamiliar subassembly and pump head be connected and form unfamiliar chamber, the pump head lateral wall on be equipped with with unfamiliar chamber and the return flow line of a fluid passage intercommunication. The utility model discloses not only realize zero requirement of revealing, guarantee the measurement moreover and carry the precision and the operating pressure of liquid that overall structure is compact, processing technology nature is strong, the installation of being convenient for, tears open and trades the part.

Description

A kind of plunger membrance formula dosing pump

Technical field

This utility model relates to a kind of dosing pump technical field, particularly relates to a kind of plunger membrance formula dosing pump.

Background technology

Dosing pump be a kind of flow can within the scope of 0-100% step-less adjustment, be used for carrying a kind of special displacement pump of liquid, belong to reciprocating displacement pump, be divided into diaphragm metering pump and plunger type metering pump. It is widely used in scientific research and the production divisions such as oil, natural gas, chemical industry, power plant, papermaking, plastics, food, medicine, environmental protection, drinking-water, sewage disposal, weaving and mine. Dosing pump is made up of drive stand parts, pump head parts, motor three part. Drive stand parts are rotated by driven by motor worm screw, by worm gear, lower sleeve, impart power to N oblique crank Z. N oblique crank Z drives toggle and crosshead with eccentric block, drives plunger reciprocating; Regulate Rotational eccentricity by N oblique crank Z and stroke control mechanism and carry out the stroke of pilot plunger, thus regulating uninterrupted; Along with plunger reciprocating motion in fluid cylinder, import check valve, Outlet check valves alternately open and close, and liquid is constantly sucked and discharges fluid end; Pump, in suction stroke, forms negative pressure, makes inlet valve open in pump head sap cavity body, liquid flows into cylinder chamber; In discharging stroke, the movement of plunger adds pressure on liquid, makes dump valve open and is discharged by liquid.

Traditional plunger type metering pump, the pressurization working lumen of pump head component is connect by import check valve speed, Outlet check valves speed connects, and realizes sealing by filler and pressure ring compression by gland. One end of plunger is stretched in pressurization working lumen, is moved by piston reciprocation, makes the volume of pressurization working lumen change and realizes imbibition, hydraulic fluid. In the process carrying out imbibition, plunger moves toward the direction exiting pressurization working lumen, now it is easily caused the liquid in pressurization working lumen to be taken out of to pressurization working lumen by plunger, thus causing that single-plunger type dosing pump leaks, in the process carrying out discharge opeing, when plunger moves toward the direction entering working chamber, make its pressure increase owing to working chamber dischargeable capacity reduces, occur due to high pressure fluid to leak from plunger; And diaphragm metering pump can accomplish zero leakage, but affected by barrier film, use pressure ratio plunger type little.

Utility model content

In order to overcome above-mentioned the deficiencies in the prior art, this utility model provides a kind of plunger membrance formula dosing pump, thus in high-voltage load situation, realize dosing pump zero leakage, it is ensured that the use pressure of dosing pump, compact overall structure, processing technology is strong, it is simple to installs, change part.

This utility model be the technical scheme is that

A kind of plunger membrance formula dosing pump, including pump head, check valve, cylinder sleeve component, connector, plunger, diaphragm assembly; Described pump head be provided with longitudinally through fluid passage one, described two ends, fluid passage one are equipped with check valve; Described connector is located at pump head left end and is mutually perpendicular to described pump head; Described pump head is provided with working chamber, and described working chamber is mutually perpendicular to fluid passage one and connects; Described cylinder sleeve component is located at working chamber left end; Described plunger includes stopper head and plunger rod, and described plunger rod runs through cylinder sleeve component and is inserted in described working chamber, and described stopper head is installed in diaphragm assembly; Described diaphragm assembly is connected formation diaphragm cavity with pump head, and described pump head sidewall is provided with the return flow line connected with described diaphragm cavity and described fluid passage one.

Wherein, the check valve of the upper end of described fluid passage one is Outlet check valves; The check valve of the lower end of described fluid passage one is import check valve, and described import check valve is provided with the fluid passage two connected with fluid passage one, and described import check valve shoulder is provided with sealing ring.

Wherein, described import check valve and Outlet check valves are all threadeded with pump head.

Wherein, described cylinder sleeve component includes sealing gland, cylinder sleeve, the first sealing ring; Described sealing gland, cylinder sleeve, the first sealing ring are installed on described working chamber left end successively; Described sealing gland is threadeded with pump head, and the first sealing ring is pressed in pump head.

Wherein, described pump head left side is provided with an annular counterbore, and the end face of described connector contact pump head is provided with the boss matched with annular counterbore, and described diaphragm assembly is located between annular counterbore and the boss of connector of pump head.

Wherein, described diaphragm assembly includes barrier film, barrier film pressing plate, plunger connecting rod, the second sealing ring; Described barrier film is located between barrier film pressing plate and plunger connecting rod, and described barrier film pressing plate is connected with plunger connecting rod by screw, and described barrier film pressing plate and stopper head place are provided with the second sealing ring, and described barrier film is provided with the centre bore mated with stopper head.

Wherein, described pump head and connector are connected by screw.

Compared with prior art, the beneficial effects of the utility model are: the form that this utility model is combined by plunger type metering pump and diaphragm metering pump, plunger arranges barrier film, barrier film pressing plate, plunger connecting rod and the second sealing ring, utilize the buffer action of barrier film, it is achieved the isolation between fluid and driving lubricating structure; Pump head is provided with the fluid passage two that fluid passage one is provided with import check valve and connects again, makes the separate cavities of memory leak fluid connect with inlet ductwork, it is achieved zero requirement revealed; And swept volume adopts the operation principle of plunger type, it is ensured that the precision of metering conveying liquid and operating pressure, compact overall structure, processing technology is strong, it is simple to installs, change part.

Accompanying drawing explanation

Fig. 1 is the structural representation of a kind of plunger membrance formula dosing pump of the present utility model;

Fig. 2 is the A place enlarged drawing of a kind of plunger membrance formula dosing pump of the present utility model;

Wherein, 1, pump head; 11, fluid passage one; 12, working chamber; 13, return flow line; 14, annular counterbore; 2, check valve; 21, Outlet check valves; 22, import check valve; 221, fluid passage two; 222, O; 3, cylinder sleeve component; 31, sealing gland; 32, cylinder sleeve; 33, the first sealing ring; 4, connector; 41, boss; 5, plunger; 51, stopper head; 52, plunger rod; 6, diaphragm assembly; 61, barrier film; 611, centre bore; 62, barrier film pressing plate; 63, plunger connecting rod; 64, the second sealing ring; 7, diaphragm cavity.

Detailed description of the invention

Below in conjunction with accompanying drawing, this utility model is further illustrated.

As shown in Figure 1 and Figure 2, a kind of plunger membrance formula dosing pump, including pump head 1, check valve 2, cylinder sleeve component 3, connector 4, plunger 5, diaphragm assembly 6; Described pump head 1 be provided with longitudinally through fluid passage 1, described two ends, fluid passage 1 are equipped with check valve 2, it is internal that fluid enters fluid passage 1 from lower end, fluid passage 1 by check valve 2, and the internal outflow from the upper end of fluid passage 1 through check valve 2 from fluid passage 1; Described connector 4 is located at pump head 1 left end and is mutually perpendicular to described pump head 1; Described pump head 1 is provided with working chamber 12, and described working chamber 12 is mutually perpendicular to fluid passage 1 and connects, and fluid enters the inside of working chamber 12 by fluid passage 1; Described cylinder sleeve component 3 is located at working chamber 12 left end; Described plunger 5 includes stopper head 51 and plunger rod 52, and the plunger rod 52 that described plunger 5 cross section is T-shaped, described runs through that cylinder sleeve component 3 is slidable to be inserted in described working chamber 12, and described stopper head 51 is installed in diaphragm assembly 6; Described diaphragm assembly 6 is connected formation diaphragm cavity 7 with pump head 1, when diaphragm assembly 6 drives plunger 5 to move back and forth, changes the dischargeable capacity of diaphragm cavity 7; Described pump head 1 sidewall is provided with the return flow line 13 connected with described diaphragm cavity 7 and described fluid passage 1.

The check valve 2 of the upper end of described fluid passage 1 is Outlet check valves 21; The check valve 2 of the lower end of described fluid passage 1 is import check valve 22, and described import check valve 22 is provided with the fluid passage 2 221 connected with fluid passage 1; Described import check valve 22 shoulder is provided with O 222, effectively prevents fluid from leaking; Described import check valve 22 and Outlet check valves 21 are all threadeded with pump head 1.

As it is shown in figure 1, described cylinder sleeve component 3 includes sealing gland 31, cylinder sleeve the 32, first sealing ring 33, described sealing gland 31, cylinder sleeve the 32, first sealing ring 33 are installed on described working chamber 12 left end successively, described sealing gland 31 is threadeded with pump head 1, and the first sealing ring 33 is pressed in pump head 1. plunger rod 52 runs through that cylinder sleeve component 3 is slidable to be inserted in described working chamber 12, described working chamber 12 is located in pump head 1, major flow passage as fluid, import check valve 22 and Outlet check valves 21 it is connected to by fluid passage 1, in the process carrying out imbibition, time moving in the direction in the past chamber 12 of deactivating of plunger 5, the swept volume of working chamber 12 increases, produce negative pressure, import check valve 22 is opened, fluid in inlet ductwork enters in the working chamber 12 in pump head 1, and when induction stroke terminates, plunger 5 moment of moving stops, pressure and pressure balance in inlet ductwork in working chamber 12, import check valve 22 resets, in the process carrying out discharge opeing, when plunger 5 moves toward the direction entering working chamber 12, the swept volume of working chamber 12 reduces, in working chamber 12, pressure raises at once, when in working chamber 12, pressure is higher than the pressure of Outlet check valves 21, open Outlet check valves 21, fluid in working chamber 12 enters discharge line, when discharge stroke terminates, plunger 5 move again moment stop, pressure in working chamber 12 is equal with outlet pressure, Outlet check valves 21 resets, circulate subsequently into the next one, moved back and forth by plunger 5, the dischargeable capacity making working chamber 12 changes and realizes imbibition, hydraulic fluid process.

Described pump head 1 left side is provided with an annular counterbore 14, described connector 4 contacts the end face of pump head 1 and is provided with the boss 41 matched with annular counterbore 14, described diaphragm assembly 6 is located between the annular counterbore 14 of pump head 1 and the boss 41 of connector 4, makes barrier film 61 seal with pump head 1 contact surface by the compression of annular counterbore 14 and boss 41.

Described diaphragm assembly 6 includes barrier film 61, barrier film pressing plate 62, plunger connecting rod the 63, second sealing ring 64; Described barrier film 61 is located between barrier film pressing plate 62 and plunger connecting rod 63, described barrier film pressing plate 62 is connected with plunger connecting rod 63 by screw, described barrier film pressing plate 62 is provided with the second sealing ring 64 with stopper head 51 place, and described barrier film 61 is provided with the centre bore 611 mated with stopper head 51. Make barrier film pressing plate 62 and plunger connecting rod 63 compress barrier film 61 by screw to realize sealing, then be provided with the second sealing ring 64 by stopper head 51, effectively prevent the leakage at stopper head 51 place, make fluid and drive isolation between lubricating structure. In imbibition process, time moving in the direction in the past chamber 12 of deactivating of plunger 5, owing to working chamber 12 dischargeable capacity increase makes its pressure reduce, fluid is easily taken in diaphragm cavity 7 by plunger 5, and occur fluid to leak from plunger rod 52, the dischargeable capacity of diaphragm cavity 7 increases simultaneously, is conducive to memory leak fluid; In the process of discharge opeing, when plunger 5 moves toward the direction entering working chamber 12, its pressure is made to increase owing to working chamber 12 dischargeable capacity reduces, and occur fluid to leak from plunger rod 52, the dischargeable capacity of diaphragm cavity 7 reduces simultaneously, in diaphragm cavity 7, the fluid of leakage returns in inlet ductwork by return flow line 13, it is possible to be effectively ensured plunger 5 when operating pressure, it is achieved No leakage between fluid and driving lubricating structure.

Described pump head 1 is connected each through screw with connector 4.

The form that this utility model is combined by plunger type metering pump and diaphragm metering pump, arranges barrier film 61, barrier film pressing plate 62, plunger connecting rod the 63, second sealing ring 64 on plunger 5; Utilize the buffer action of barrier film 61, it is achieved the isolation between fluid and driving lubricating structure; Pump head 1 is provided with the fluid passage 2 221 that fluid passage 1 is provided with import check valve 22 and connects again, makes the separate cavities 7 of memory leak fluid connect with inlet ductwork, it is achieved zero requirement revealed; And swept volume adopts the operation principle of plunger type, it is ensured that the precision of metering conveying liquid and operating pressure, compact overall structure, processing technology is strong, it is simple to installs, change part.

Claims (7)

1. a plunger membrance formula dosing pump, including pump head, check valve, cylinder sleeve component, connector, plunger, diaphragm assembly; Described pump head be provided with longitudinally through fluid passage one, described two ends, fluid passage one are equipped with check valve; Described connector is located at pump head left end and is mutually perpendicular to described pump head; Described pump head is provided with working chamber, and described working chamber is mutually perpendicular to fluid passage one and connects; Described cylinder sleeve component is located at working chamber left end; It is characterized in that: described plunger includes stopper head and plunger rod, described plunger rod runs through cylinder sleeve component and is inserted in described working chamber, and described stopper head is installed in diaphragm assembly; Described diaphragm assembly is connected formation diaphragm cavity with pump head, and described pump head sidewall is provided with the return flow line connected with described diaphragm cavity and described fluid passage one.
2. a kind of plunger membrance formula dosing pump according to claim 1, it is characterised in that: the check valve of the upper end of described fluid passage one is Outlet check valves; The check valve of the lower end of described fluid passage one is import check valve, and described import check valve is provided with the fluid passage two connected with fluid passage one, and described import check valve shoulder is provided with sealing ring.
3. a kind of plunger membrance formula dosing pump according to claim 2, it is characterised in that: described import check valve and Outlet check valves are all threadeded with pump head.
4. a kind of plunger membrance formula dosing pump according to claim 1, it is characterised in that: described cylinder sleeve component includes sealing gland, cylinder sleeve, the first sealing ring; Described sealing gland, cylinder sleeve, the first sealing ring are installed on described working chamber left end successively; Described sealing gland is threadeded with pump head.
5. a kind of plunger membrance formula dosing pump according to claim 1, it is characterized in that: described pump head left side is provided with an annular counterbore, the end face of described connector contact pump head is provided with the boss matched with annular counterbore, and described diaphragm assembly is located between annular counterbore and the boss of connector of pump head.
6. a kind of plunger membrance formula dosing pump according to claim 1, it is characterised in that: described diaphragm assembly includes barrier film, barrier film pressing plate, plunger connecting rod, the second sealing ring; Described barrier film is located between barrier film pressing plate and plunger connecting rod, and described barrier film pressing plate is connected with plunger connecting rod by screw, and described barrier film pressing plate and stopper head place are provided with the second sealing ring, and described barrier film is provided with the centre bore mated with stopper head.
7. a kind of plunger membrance formula dosing pump according to claim 1, it is characterised in that: described pump head and connector are connected by screw.
CN201521053190.XU 2016-04-05 2016-04-05 Plunger diaphragm type measuring pump CN205277772U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201521053190.XU CN205277772U (en) 2016-04-05 2016-04-05 Plunger diaphragm type measuring pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201521053190.XU CN205277772U (en) 2016-04-05 2016-04-05 Plunger diaphragm type measuring pump

Publications (1)

Publication Number Publication Date
CN205277772U true CN205277772U (en) 2016-06-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201521053190.XU CN205277772U (en) 2016-04-05 2016-04-05 Plunger diaphragm type measuring pump

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106884780A (en) * 2015-12-16 2017-06-23 德帕姆(杭州)泵业科技有限公司 A kind of plunger membrance formula measuring pump
CN107061215A (en) * 2017-06-02 2017-08-18 德帕姆(杭州)泵业科技有限公司 Plunger type metering pump No leakage fluid end structure
CN108757429A (en) * 2018-07-09 2018-11-06 北京中岩大地科技股份有限公司 A kind of liquid plunger locellus pump head

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106884780A (en) * 2015-12-16 2017-06-23 德帕姆(杭州)泵业科技有限公司 A kind of plunger membrance formula measuring pump
CN107061215A (en) * 2017-06-02 2017-08-18 德帕姆(杭州)泵业科技有限公司 Plunger type metering pump No leakage fluid end structure
CN108757429A (en) * 2018-07-09 2018-11-06 北京中岩大地科技股份有限公司 A kind of liquid plunger locellus pump head

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