CN206625949U

CN206625949U - Plunger pump group

Info

Publication number: CN206625949U
Application number: CN201720072330.0U
Authority: CN
Inventors: 石瑞
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-01-20
Filing date: 2017-01-20
Publication date: 2017-11-10
Anticipated expiration: 2027-01-20

Abstract

It the utility model is related to a kind of plunger pump group, it includes screw motor, the pump housing, pump head, pump nut, guiding pump plunger, O-ring seal, front connector, diaphragm valve, side connector and joint sealing circle, the screw motor, the pump head and the diaphragm valve and is fixedly connected respectively with the pump housing；The nut is set on the screw rod of the screw motor, the nut is fixedly connected with the plunger tail, spacer pin is provided with the plunger tail outer wall, the stopper slot corresponding with the spacer pin is offered on the pump housing, the plunger tail outer wall is equipped with magnetic beans, Hall switch is offered on the pump housing, the lie communicated with the plunger cavity is offered on the pump head, the passage of the diaphragm valve and the lie communicate, and sealed by joint sealing circle, the side connector is connected with the passage of the diaphragm valve, plunger pump group provided by the utility model is effectively reduced the quantity of pipe and joints, small volume, it is compact-sized, easy-to-connect, independent plug is directly accessed.

Description

Plunger pump group

Technical field

It the utility model is related to a kind of plunger pump group.

Background technology

At present, full-automatic sample introduction analysis system, sample are all used in major Grade A hospital and blood monitoring station, blood analysis All be as far as possible micro updating, plunger pump joint at present is more, and maintenance and installation is inconvenient, and cost is high, controls complexity etc..

In view of this, it is desirable to provide a kind of plunger pump group simple in construction, easy to use.

Utility model content

Technical problem to be solved in the utility model is to provide a kind of plunger pump group simple in construction, simple installation.

To solve the above problems, technical solution adopted in the utility model is：

A kind of plunger pump group, its key technology are that it includes screw motor, the pump housing, pump head, pump nut, guiding pump plunger shaft Plug, O-ring seal, front connector, diaphragm valve, side connector and joint sealing circle, the screw motor, the pump head and the barrier film Valve is fixedly connected with the pump housing respectively；

The pump plunger that is oriented to includes plunger tail, plunger middle part and plunger front that external diameter diminishes successively, the pump housing Telescopic cavity is inside offered, the pump head offers plunger cavity, and the telescopic cavity and the plunger cavity connect, the plunger tail With plunger in the middle part of be placed in the telescopic cavity, the plunger front is placed in the plunger cavity, and by the plunger front with The O-ring seal sealing set between the plunger cavity, the front end of the plunger cavity is connected with the front connector；

The nut is set on the screw rod of the screw motor, and the nut is fixedly connected with the plunger tail, institute State and spacer pin is provided with plunger tail outer wall, the stopper slot corresponding with the spacer pin is offered on the pump housing, it is described Plunger tail outer wall is equipped with magnetic beans, offers Hall switch on the pump housing, is offered on the pump head and the plunger cavity The lie communicated, the passage of the diaphragm valve and the lie communicate, and are sealed by joint sealing circle, and the diaphragm valve leads to The side connector is connected with road.

Further improved as the utility model, the diaphragm valve (8) is bolted with the pump housing (2) respectively Connection.

Further improved as the utility model, model Shenzhen of the diaphragm valve, which is cultivated, opens up fluid control Co., Ltd 1021 series.

It is using beneficial effect caused by above-mentioned technical proposal：

Plunger pump group provided by the utility model is effectively reduced the quantity of pipe and joints, compact-sized, wiring Convenient, independent plug is directly accessed.

Plunger pump group small volume provided by the utility model, outward appearance is exquisite, simple to install, and no dead angle product is small, in pipeline Bubble-free remains, and can effectively improve fluid injection precision；

Brief description of the drawings

, below will be right in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art The required accompanying drawing used is briefly described in embodiment or description of the prior art, it should be apparent that, describe below In accompanying drawing be some embodiments of the present utility model, for those of ordinary skill in the art, do not paying creativeness On the premise of work, other accompanying drawings can also be obtained according to these accompanying drawings.

Fig. 1 is structural representation of the present utility model；

Fig. 2 is sectional view of the present utility model；

In the accompanying drawings：1 screw motor, 2 pump housings, 2-1 telescopic cavities, 3 pump heads, 3-1 plunger cavities, 3-2 lies, 4 pump nuts, 5 It is oriented to pump plunger, 5-1 plunger tails, 5-2 plungers middle part, 5-3 plunger fronts, 5-4 spacer pins, 6O types sealing ring, 7 front connectors, 8 Diaphragm valve, 9 side connectors, 10 joint sealing circles, 11 magnetic beans, 12 Hall switch, 100 control panels, 200 protective covers.

Embodiment

To make the purpose of this utility model, technical scheme and advantage clearer, with reference to specific embodiment to practicality It is new to carry out clear, complete description.

Plunger pump group as shown in figure 1 and 2, it includes screw motor 1, the pump housing 2, pump head 3, pump nut 4, guiding pump plunger shaft Plug 5, O-ring seal 6, front connector 7, diaphragm valve 8, side connector 9 and joint sealing circle 10, the screw motor 1, the pump head 3 It is fixedly connected respectively with the pump housing 2 with the diaphragm valve 8；

The pump plunger 5 that is oriented to includes plunger tail 5-1, the plunger middle part 5-2 and plunger front 5- that external diameter diminishes successively 3, telescopic cavity 2-1 is offered in the pump housing 2, and the pump head 3 offers plunger cavity 3-1, the telescopic cavity 2-1 and the plunger Chamber 3-1 is connected, and 5-2 is placed in the telescopic cavity 2-1 in the middle part of the plunger tail 5-1 and plunger, and the plunger front 5-3 is put In in the plunger cavity 3-1, and the O-ring seal 6 by being set between the plunger front 5-3 and the plunger cavity 3-1 is close Envelope, the front end of the plunger cavity 3-1 is connected with the front connector 7.

The nut 4 is set on the screw rod of the screw motor 1, and the nut 4 and the plunger tail 5-1 are fixed and connected Connect, spacer pin 5-4 is provided with the plunger tail 5-1 outer walls, is offered on the pump housing 2 relative with the spacer pin 5-4 The stopper slot 2-2 answered, the plunger tail 5-1 outer walls are equipped with magnetic beans 11, Hall switch 12, institute are offered on the pump housing 2 State the lie 3-2 for offering on pump head 3 and being communicated with the plunger cavity 3-1, the passage of the diaphragm valve 8 and the lie 3-2 phases It is logical, and sealed by joint sealing circle 10, the side connector 9 is connected with the passage of the diaphragm valve 8.

The utility model can also integrate control panel 100 and the protective cover 200 being buckled on outside the control panel 100, control Making sheet 100 is fixedly connected with protective cover 200 with the pump housing 2, and zero point sensor is made up of magnetic beans and Hall switch, can detect zero Point.

Diaphragm valve in the utility model cultivates the barrier film electricity for opening up 1021 series that fluid controls Co., Ltd's production for Shenzhen Magnet valve, including valve body, valve casing, magnet coil, spring and barrier film.

The course of work of this practicality is as follows:When sample-adding, screw motor work, screw rod rotates, due to the work of spacer pin With, rotary motion is changed into moving along a straight line, nut moves right, be oriented to pump plunger 5 move right, now diaphragm valve close Side connector, liquid flow out from front connector, and when magnetic beans are moved to above Hall switch, single-chip microcomputer receives signal, output order, screw rod Motor driving is stopped.

When cleaning and imbibition, diaphragm valve is opened, and screw motor work, screw rod is rotated, due to the effect of spacer pin, will revolved Transhipment is dynamic to be changed into moving along a straight line, and nut moves right, and is moved to the left with pump plunger 5 is oriented to, and now diaphragm valve opens side connector, Liquid enters from side connector.

Finally it should be noted that：Above example is only to illustrate the technical solution of the utility model, rather than its limitations； Although the utility model is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that： It can still be modified to the technical scheme described in previous embodiment, or which part technical characteristic is equal Replace；And these modifications or replacement, the essence of appropriate technical solution is departed from the utility model embodiment technical scheme Spirit and scope.

Claims

1. a kind of plunger pump group, it is characterised in that it includes screw motor (1), the pump housing (2), pump head (3), pump nut (4), led To pump plunger (5), O-ring seal (6), front connector (7), diaphragm valve (8), side connector (9) and joint sealing circle (10), the spiral shell Bar motor (1), the pump head (3) and the diaphragm valve (8) are fixedly connected with the pump housing (2) respectively；

The pump plunger (5) that is oriented to includes plunger tail (5-1), plunger middle part (5-2) and plunger front that external diameter diminishes successively (5-3), the pump housing (2) is interior to offer telescopic cavity (2-1), and the pump head (3) offers plunger cavity (3-1), the telescopic cavity (2-1) and the plunger cavity (3-1) connect, and (5-2) is placed in the telescopic cavity in the middle part of the plunger tail (5-1) and plunger In (2-1), the plunger front (5-3) is placed in the plunger cavity (3-1), and by the plunger front (5-3) with it is described O-ring seal (6) sealing set between plunger cavity (3-1), the front end of the plunger cavity (3-1) is connected with the front connector (7)；

The nut (4) is set on the screw rod of the screw motor (1), and the nut (4) and the plunger tail (5-1) are solid Fixed connection, be provided with spacer pin (5-4) on plunger tail (5-1) outer wall, offered on the pump housing (2) with it is described spacing Sell (5-4) corresponding stopper slot (2-2), plunger tail (5-1) outer wall is equipped with magnetic beans (11), on the pump housing (2) Offer Hall switch (12), offer the lie (3-2) communicated with the plunger cavity (3-1) on the pump head (3), it is described every The passage and the lie (3-2) of film valve (8) communicate, and are sealed by joint sealing circle (10), the passage of the diaphragm valve (8) On be connected with the side connector (9).

A kind of 2. plunger pump group according to claim 1, it is characterised in that the diaphragm valve (8) respectively with the pump housing (2) it is bolted to connection.