CN212642974U

CN212642974U - High-precision liquid pneumatic adjustable metering pump

Info

Publication number: CN212642974U
Application number: CN202020596889.5U
Authority: CN
Inventors: 申彬
Original assignee: Benshen Machinery Technology Shanghai Co ltd
Current assignee: Benshen Machinery Technology Shanghai Co ltd
Priority date: 2020-04-20
Filing date: 2020-04-20
Publication date: 2021-03-02
Anticipated expiration: 2030-04-20

Abstract

The utility model provides a pneumatic adjustable measuring pump of high-accuracy liquid, including the pump body, be equipped with air inlet and gas vent on the pump body, still be equipped with inlet, liquid outlet, injection passage on the pump body, be equipped with in the injection passage rather than sliding connection's injection push rod, be equipped with the first elastic component that resets on the injection push rod, the end position and the stroke control pole butt cooperation of injection push rod are fixed with flow control valve on the stroke control pole, and the outside of stroke control pole is equipped with the regulation fixing base, and flow control valve's the outside is equipped with the flow control cap. The flow regulation is realized by rotating the flow regulation cap, and the high-precision metering is realized by pushing the injection push rod back and forth.

Description

High-precision liquid pneumatic adjustable metering pump

Technical Field

The utility model relates to a measuring pump technical field specifically is a pneumatic adjustable measuring pump of high-accuracy liquid.

Background

Plunger metering pumps are a common fluid delivery device and belong to reciprocating pumps. The plunger reciprocates in the cylinder body, so that the volume of the sealed working cavity is changed to realize fluid delivery. The plunger pump has the advantages of high rated pressure, compact structure, high efficiency, convenient flow regulation and the like, and is widely applied to the occasions of conveying slurry and pure liquid with high pressure and flow needing to be regulated, such as hydraulic machines, engineering machinery, ships, chemical machinery and the like.

However, most of the conventional metering pumps have insufficient metering accuracy and cannot adjust the flow rate during metering.

SUMMERY OF THE UTILITY MODEL

To the problem pointed out in the background art, the utility model provides a pneumatic adjustable measuring pump of high-accuracy liquid.

The technical scheme of the utility model is realized like this:

the utility model provides a pneumatic adjustable measuring pump of high-accuracy liquid, includes the pump body, be equipped with air inlet and gas vent on the pump body, its characterized in that: the pump body is still equipped with inlet, liquid outlet, injection channel, the inlet with the liquid outlet by injection channel intercommunication, be equipped with rather than sliding connection's injection push rod in the injection channel, the injection push rod extends to be equipped with first elastic component that resets on the position in the injection channel outside, the injection push rod extends to the end position in the injection channel outside cooperates with stroke control pole butt, be fixed with flow control valve on the stroke control pole, the outside of stroke control pole is equipped with the regulation fixing base, flow control valve's the outside is equipped with the flow control cap, adjust the fixing base with pump body fixed connection, the flow control cap with adjust fixing base rotatable coupling, flow control valve with adjust fixing base threaded connection and with flow control cap fixed connection.

The utility model discloses further set up to, the both ends of first elastic component that resets are equipped with first support piece and second support piece respectively.

The utility model discloses further set up to, the stroke control pole is equipped with the sealing washer support, sealing washer support sliding connection in the stroke control pole with the end position of injection push rod butt position one side.

The utility model discloses further set up to, Y type sealing washer has been cup jointed in the outside of sealing washer support.

The utility model discloses further set up to, still be equipped with sealed chamber on the pump body, be equipped with the closing plate in the sealed chamber, sealed chamber is equipped with the locking cap, be equipped with in the sealed chamber and be used for the second elastic component that resets that the closing plate resets.

The utility model discloses further set up to, be equipped with the backup pad in the sealed intracavity, be equipped with the holding tank in the backup pad, the closing plate with holding tank adaptation connection.

The utility model discloses further set up to, be equipped with the exhaust hole on the pump body, the position in exhaust hole with the position of liquid outlet corresponds and feeds through the setting, exhaust downthehole sealed ball and the sealing screw of being equipped with, sealing screw with sealed ball threaded connection will sealed ball is fixed in the exhaust hole.

The utility model discloses further set up to, the flow control cap with adjust and be equipped with the regulation ball between the fixing base, be equipped with annular adjustment tank on adjusting the fixing base, adjust the ball with the adjustment tank roll is connected.

The utility model discloses further set up to, flow control valve's circumference direction is equipped with evenly distributed's scale groove, the inside regulation that is equipped with of flow control cap dials the tooth, adjust dial the tooth with the cooperation of pegging graft in scale groove.

The utility model discloses further set up to, be equipped with the scale that is used for sign injection measurement on the regulation fixing base.

To sum up, the beneficial effects of the utility model are that: the utility model provides a high-accuracy liquid pneumatic adjustable metering pump, can be used to various different viscosity liquid as the medium and measure, can be used for the flow of 1ml and above per hour when measuring, have the characteristics of little flow precision height, measurement accuracy; the flow can be adjusted during metering, the stability is high, and the liquid medium can be prevented from flowing reversely and downstream

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the injection push rod and the stroke adjusting rod of the present invention;

fig. 3 is a schematic structural view of the flow control valve of the present invention;

fig. 4 is a schematic structural view of the support plate and the fixing cap of the present invention.

Reference numerals: 1. a pump body; 101. an air inlet; 102. an exhaust port; 103. a liquid inlet; 104. a liquid outlet; 105. an exhaust hole; 106. an injection channel; 107. sealing the cavity; 2. an injection push rod; 3. a first return spring; 4. a first support member; 5. a second support plate; 6. a stroke adjusting rod; 7. a seal ring support; 8. a Y-shaped seal ring; 9. sealing the ball; 10. a seal screw; 11. a sealing plate; 12. a support plate; 121. accommodating grooves; 13. a fixing cap; 14. a second return spring; 15. a flow regulating valve; 151. a scale groove; 16. adjusting the fixed seat; 161. an adjustment groove; 17. a flow regulating cap; 18. adjusting the ball; 19. and an O-shaped ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The present invention is described below with reference to fig. 1-4:

a high-precision liquid pneumatic adjustable metering pump comprises a pump body 1, wherein an air inlet 101, an air outlet 102, a liquid inlet 103, a liquid outlet 104 and an air exhaust hole 105 are sequentially arranged on the pump body 1, the air inlet 101 is communicated with the air outlet 102, the liquid inlet 103 is communicated with the liquid outlet 104 through an injection channel 106, and an injection push rod 2 which is connected with the injection channel 106 in a sliding mode is arranged in the injection channel 106.

The injection push rod 2 is provided with a first elastic restoring element 3 at a position extending to the outer side of the injection passage 106, and a first supporting element 4 and a second supporting plate 125 are respectively arranged at two ends of the first elastic restoring element 3. The first support 4 and the second support plate 125 are fixed on the portion of the injection push rod 2 extending to the outside of the injection channel 106, and the first elastic return element 3 is located between the first support 4 and the second support plate 125 and is in abutting fit with the first support 4 and the second support plate 125.

The end part of the injection push rod 2 extending to the outer side of the injection channel 106 is in butt fit with the stroke adjusting rod 6, the stroke adjusting rod 6 is provided with a sealing ring support 7, the sealing ring support 7 is connected to the end part of one side of the butt part of the stroke adjusting rod 6 and the injection push rod 2 in a sliding mode, and the outer side of the sealing ring support 7 is sleeved with a Y-shaped sealing ring 8.

By adopting the technical scheme, taking a stroke cycle as an example, an injection medium enters the injection channel 106 from the liquid inlet 103, the air source enters the pump body 1 from the air inlet 101, the Y-shaped sealing ring 8 is pushed to drive the sealing ring support 7 to move, the sealing ring support 7 slides on the stroke adjusting rod 6 under the pushing of the air source and is abutted against the second support plate 125, the air source is continuously input, the sealing ring support 7 pushes the second support plate 125 to drive the injection push rod 2 to push the medium in the injection channel 106 to flow out from the liquid outlet 104 under the pressure action of the air source, one-time injection is completed, then the air source flows out from the air outlet 102, the injection push rod 2 is pushed by the second support plate 125 under the elastic force of the first reset elastic part 3, the stroke adjusting rod 6 resets.

The position of the exhaust hole 105 corresponds to the position of the liquid outlet 104 and is communicated with the liquid outlet, a sealing ball 9 and a sealing screw 10 are arranged in the exhaust hole 105, and the sealing ball 9 is fixed in the exhaust hole 105 by the sealing screw 10 and the sealing ball 9 in threaded connection.

By adopting the technical scheme, if the gas or other media in the injection channel 106 are not completely removed, when a new medium is injected for metering, an error is caused to the metering precision, and when the new medium is injected into the liquid inlet 103, the sealing screw 10 is opened, and the new medium is injected to enable the gas or other media in the injection channel 106 to be removed through the exhaust hole 105.

Still be equipped with sealed chamber 107 on the pump body 1, be equipped with closing plate 11, backup pad 12 in the sealed chamber 107, be equipped with holding tank 121 in the backup pad 12, be equipped with closing plate 11 and holding tank 121 adaptation connection in the sealed chamber 107. Sealed chamber 107 is equipped with locking cap 13, is equipped with the second elastic component 14 that resets in the sealed chamber 107, and the second elastic component 14 that resets is located between locking cap 13 and the backup pad 12 and cooperates with locking cap 13 and backup pad 12 butt, and under the effect of the elastic force of second elastic component 14 that resets, the closing plate 11 seals up liquid outlet 104.

With the above technical solution, the sealing plate 11 is used to prevent the medium from flowing back. When the injection push rod 2 pushes the medium in the injection passage 106, the sealing plate 11 compresses the second reset elastic part 14 under the action of the pressure of the medium, so that the liquid outlet 104 is opened to allow the medium to flow out from the liquid outlet 104, and when the first reset elastic part 3 pushes the injection push rod 2 and the stroke adjusting rod 6 to reset, the sealing plate 11 seals the liquid outlet 104 under the action of the elastic force of the second reset elastic part 14.

Preferably, the first elastic return element 3 and the second elastic return element 14 are both springs.

A flow regulating valve 15 is fixed on the stroke regulating rod 6, a regulating fixing seat 16 is arranged on the outer side of the stroke regulating rod 6, a flow regulating cap 17 is arranged on the outer side of the flow regulating valve 15, the regulating fixing seat 16 is fixedly connected with the pump body 1, a graduated scale (not marked in the figure) for marking injection metering is arranged on the regulating fixing seat 16, a regulating ball 18 is arranged between the flow regulating cap 17 and the regulating fixing seat 16, an annular regulating groove 161 is arranged on the regulating fixing seat 16, and the regulating ball 18 is in rolling connection with the regulating groove 161.

The flow regulating valve 15 is in threaded connection with the regulating fixing seat 16 and is fixedly connected with the flow regulating cap 17. The circumferential direction of the flow control valve 15 is provided with scale grooves 151 which are uniformly distributed, and the flow control cap 17 is internally provided with a control shifting tooth (not marked in the figure), which is in inserted connection with the scale grooves 151.

Adopt above-mentioned technical scheme, flow control valve 15 with adjust 16 threaded connection of fixing base and with flow control cap 17 fixed connection, through rotating flow control cap 17 for flow control valve 15 lies in the in-process that connects soon with adjusting fixing base 16, drives stroke control pole 6 and promotes injection push rod 2 and remove, through shortening and increasing the length of injection passageway 106, adjusts the flow that stroke output at every turn.

O-shaped rings 19 are arranged between the first supporting piece 4 and the pump body 1, between the fixing cap 13 and the pump body 1, between the adjusting fixing seat 16 and the pump body 1, and between the adjusting fixing seat 16 and the stroke adjusting rod 6 for sealing.

The above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a pneumatic adjustable measuring pump of high-accuracy liquid, includes the pump body (1), be equipped with air inlet (101) and gas vent (102) on the pump body (1), its characterized in that: the pump body (1) is further provided with a liquid inlet (103), a liquid outlet (104) and an injection channel (106), the liquid inlet (103) is communicated with the liquid outlet (104) through the injection channel (106), an injection push rod (2) which is connected with the injection channel in a sliding manner is arranged in the injection channel (106), a first reset elastic part (3) is arranged on a part of the injection push rod (2) extending to the outer side of the injection channel (106), the end part of the injection push rod (2) extending to the outer side of the injection channel (106) is in butt fit with a stroke adjusting rod (6), a flow adjusting valve (15) is fixed on the stroke adjusting rod (6), an adjusting fixing seat (16) is arranged on the outer side of the stroke adjusting rod (6), a flow adjusting cap (17) is arranged on the outer side of the flow adjusting valve (15), and the adjusting fixing seat (16) is fixedly connected with the, flow control cap (17) with adjust fixing base (16) rotatable coupling, flow control valve (15) with adjust fixing base (16) threaded connection and with flow control cap (17) fixed connection.

2. A high precision liquid pneumatic adjustable metering pump according to claim 1, characterized in that: and a first supporting piece (4) and a second supporting piece are respectively arranged at two ends of the first resetting elastic piece (3).

3. A high precision liquid pneumatic adjustable metering pump according to claim 1, characterized in that: the stroke adjusting rod (6) is provided with a sealing ring support (7), and the sealing ring support (7) is connected to the end part of one side of the abutting part of the stroke adjusting rod (6) and the injection push rod (2) in a sliding mode.

4. A high precision liquid pneumatic adjustable metering pump according to claim 3, characterized in that: and a Y-shaped sealing ring (8) is sleeved on the outer side of the sealing ring support (7).

5. A high precision liquid pneumatic adjustable metering pump according to claim 1, characterized in that: still be equipped with sealed chamber (107) on the pump body (1), be equipped with closing plate (11) in sealed chamber (107), sealed chamber (107) are equipped with locking cap (13), be equipped with in sealed chamber (107) and be used for the second elastic component (14) that reset of closing plate (11).

6. A high precision liquid pneumatic adjustable metering pump according to claim 5, characterized in that: the sealing structure is characterized in that a supporting plate (12) is arranged in the sealing cavity (107), an accommodating groove (121) is formed in the supporting plate (12), and the sealing plate (11) is connected with the accommodating groove (121) in an adaptive mode.

7. A high precision liquid pneumatic adjustable metering pump according to claim 1, characterized in that: be equipped with exhaust hole (105) on the pump body (1), the position of exhaust hole (105) with the position of liquid outlet (104) corresponds and the intercommunication sets up, be equipped with sealed ball (9) and sealing screw (10) in exhaust hole (105), sealing screw (10) with sealed ball (9) threaded connection will sealed ball (9) are fixed in exhaust hole (105).

8. A high precision liquid pneumatic adjustable metering pump according to claim 1, characterized in that: flow control cap (17) with adjust and be equipped with between fixing base (16) and adjust ball (18), be equipped with annular regulation groove (161) on adjusting fixing base (16), adjust ball (18) with regulation groove (161) roll connection.

9. A high precision liquid pneumatic adjustable metering pump according to claim 1, characterized in that: the circumferential direction of flow control valve (15) is equipped with evenly distributed's scale groove (151), flow control cap (17) inside is equipped with the regulation and dials the tooth, the regulation dial the tooth with scale groove (151) cooperation of pegging graft.

10. A high precision liquid pneumatic adjustable metering pump according to claim 1, characterized in that: and a graduated scale for marking injection metering is arranged on the adjusting fixing seat (16).