CN204511830U - A kind of Hydraulic Diaphragm Metering Pump - Google Patents
A kind of Hydraulic Diaphragm Metering Pump Download PDFInfo
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- CN204511830U CN204511830U CN201520138475.7U CN201520138475U CN204511830U CN 204511830 U CN204511830 U CN 204511830U CN 201520138475 U CN201520138475 U CN 201520138475U CN 204511830 U CN204511830 U CN 204511830U
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- push rod
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- cam axle
- hydraulic pressure
- pump
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Abstract
The utility model belongs to diaphragm metering pump technical field, disclose a kind of Hydraulic Diaphragm Metering Pump, comprise: the pump housing and be arranged in the pump housing: end cam axle, push rod chamber, Returnning spring, media cavity, the first hydraulic pressure cavity, push rod chamber is parallel with end cam axle, push rod chamber eccentric setting; Be provided with barrier film between media cavity and the first hydraulic pressure cavity, media cavity is connected with import one-way valve and Outlet check valves; The end face of end cam axle one end is inclined-plane, and push rod is provided with push rod in chamber, and end and the inclined-plane of push rod offset, and Returnning spring is connected with push rod.The structure that the utility model combines by adopting push rod and end cam axle, the rotation of end cam axle promotes push rod to-and-fro motion, realizes exerting pressure to hydraulic oil, and then the object driving barrier film to do manual work; Its transmission part structure is simple, driving parts is few, transmission efficiency is high, flow is large, and volume is little, compact structure, installation are simple, and batch production can use die casting, and amount of finish is few, cost is low.
Description
Technical field
The utility model relates to diaphragm metering pump technical field, particularly a kind of Hydraulic Diaphragm Metering Pump.
Background technique
Diaphragm metering pump, due to the buffer action of barrier film, structurally really achieves transported medium and drives the isolation between lubricating structure, transported medium No leakage, pollution-free.Hydraulic Diaphragm Metering Pump in the market, its kind of drive has two kinds: 1. realized being rotated in deceleration by worm screw, worm gear, drives hydraulic plunger to-and-fro motion by bent axle, linkage mechanism; 2. realized being rotated in deceleration by worm screw, worm gear, drive hydraulic plunger to-and-fro motion by eccentric wheel, post rod mechanism.
Above-mentioned two kinds of Hydraulic Diaphragm Metering Pumps, due to transmission internal, part is more, and the pump housing is comparatively large, there is following shortcoming: flow is little, overall heavier; The built-in transmission of worm and gear, transmission efficiency is low; Driving component is easy to wear, changes transmission part and comparatively bothers.
Model utility content
(1) technical problem that will solve
The technical problems to be solved in the utility model is: more for solving existing hydraulic pressure Hydraulic Diaphragm Metering Pump part, and the pump housing is comparatively large, causes the problem that flow is little, entirety is heavier, transmission efficiency is low.
(2) technological scheme
In order to solve the problems of the technologies described above, the utility model provides a kind of Hydraulic Diaphragm Metering Pump, comprise: the pump housing and be arranged in the described pump housing: end cam axle, push rod chamber, Returnning spring, media cavity, the first hydraulic pressure cavity, the center line in described push rod chamber and the axis of described end cam axle are parallel to each other, and the relatively described end cam eccentric shaft in described push rod chamber is arranged; The one end in described push rod chamber and described first hydraulic chamber into communication, the other end is relative with the end face of described end cam axle; Be provided with barrier film between described media cavity and the first hydraulic pressure cavity, described media cavity is connected with import one-way valve and Outlet check valves; Described end cam axle is rotatably connected in the described pump housing, and the end face of described end cam axle one end is inclined-plane, and the other end stretches out the described pump housing and is connected with driver element; Be provided with push rod in described push rod chamber, described Returnning spring is connected with described push rod, and described Returnning spring offsets for keeping the end of described push rod and described inclined-plane; ; Hydraulic oil is equipped with in described first hydraulic pressure cavity and push rod chamber.
Wherein, one end of described push rod is provided with ceramic balls, and described push rod is offseted by described ceramic balls and described inclined-plane.
Wherein, described inclined-plane is provided with annular groove, and described ceramic balls is positioned at described annular groove.
Wherein, described push rod is provided with the shaft shoulder, and one end of described Returnning spring withstands on the described shaft shoulder, and the other end of described Returnning spring is provided with the spring capping be socketed in successively on described push rod, withstand voltage filling body, pressure ring and gland nut.
Wherein, the described pump housing comprises and connecting successively: rear portion housing, middle casing, middle pump head and front pump head, described end cam axle is connected with described rear portion housing into rotation by bearing, described push rod chamber is positioned at described middle casing, described first hydraulic pressure cavity is positioned at described middle pump head, described media cavity is positioned at described front pump head, and described barrier film is connected between described middle pump head and front pump head.
Wherein, be provided with the second hydraulic pressure cavity in described middle casing, described second hydraulic pressure cavity is communicated with described first hydraulic pressure cavity and/or push rod chamber; Described second hydraulic pressure cavity is connected with safety valve.
Wherein, described import one-way valve and Outlet check valves are all arranged on the side of described front pump head.
Wherein, described pump housing entirety is in straight cylinder type.
(3) beneficial effect
Technique scheme tool has the following advantages: a kind of Hydraulic Diaphragm Metering Pump of the utility model, by the structure adopting push rod and end cam axle to combine, the rotation of end cam axle promotes push rod to-and-fro motion, realizes exerting pressure to hydraulic oil, and then the object driving barrier film to do manual work; Its transmission part structure is simple, driving parts is few, transmission efficiency is high, flow is large, and volume is little, compact structure, installation are simple, and batch production can use die casting, and amount of finish is few, cost is low.
Accompanying drawing explanation
Fig. 1 is the sectional view of Hydraulic Diaphragm Metering Pump described in the utility model;
Fig. 2 is the perspective view of Hydraulic Diaphragm Metering Pump described in the utility model.
Wherein, 1, end cam axle; 2, rear portion housing; 3, middle casing; 4, middle pump head; 5, front pump head; 6, ceramic balls; 7, push rod; 8, Returnning spring; 9, safety valve; 10, spring capping; 11, withstand voltage filling body; 12, pressure ring; 13, gland nut; 14, Outlet check valves; 15, barrier film; 16, import one-way valve.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples for illustration of the utility model, but are not used for limiting scope of the present utility model.
As shown in Figure 1-2, a kind of Hydraulic Diaphragm Metering Pump of the utility model, comprise: the pump housing and be arranged in the described pump housing: end cam axle 1, push rod chamber, Returnning spring 8, media cavity, the first hydraulic pressure cavity, the center line in described push rod chamber and the axis of described end cam axle 1 are parallel to each other, described push rod chamber relatively described end cam axle 1 eccentric setting; The one end in described push rod chamber and described first hydraulic chamber into communication, the other end is relative with the end face of described end cam axle 1; Be provided with barrier film 15 between described media cavity and the first hydraulic pressure cavity, described media cavity is connected with import one-way valve 16 and Outlet check valves 14; Described end cam axle 1 is rotatably connected in the described pump housing, and the end face of described end cam axle 1 one end is inclined-plane, and the other end stretches out the described pump housing and is connected with driver element; Be provided with push rod 7 in described push rod chamber, described Returnning spring 8 is connected with described push rod 7, and described Returnning spring 8 offsets for the end and described inclined-plane keeping described push rod 7; ; Hydraulic oil is equipped with in described first hydraulic pressure cavity and push rod chamber.Driver element drives end cam axle 1 to rotate, push rod 7 slides to the first hydraulic pressure cavity vertically under the impetus on inclined-plane, hydraulic oil is squeezed, thus exert pressure to barrier film 15, barrier film 15 moves in media cavity, by the medium squeeze in media cavity, flowed out by Outlet check valves 14 after medium is subject to certain pressure intensity effect; Then along with the rotation of end cam axle 1, inclined-plane power is disappeared to push rod 7, Returnning spring 8 promotes push rod 7 and moves to the direction away from the first hydraulic pressure cavity, first hydraulic pressure cavity forms negative pressure, and barrier film 15 moves to the first hydraulic pressure cavity, and the pressure in media cavity reduces gradually, when after the Pressure Drop in media cavity to certain value, import one-way valve 16 is opened, and medium flows into media cavity by import one-way valve 16, waits for and being compressed; So far a stroke completes.
The inclined-plane of end cam axle 1 and the angle of end cam axle 1 axis determine the stroke of push rod, and acute angle is less, and stroke is larger, and limit angle is 70 °, and when angle is 90 °, the stroke of push rod 7 is zero.
For reducing the frictional force between push rod 7 and inclined-plane, to avoid part to be worn, be provided with ceramic balls 6 in one end of described push rod 7, described push rod 7 is offseted with described inclined-plane by described ceramic balls 6.In end cam axle 1 rotation process, between push rod 7, ceramic balls 6, inclined-plane, be Structure deformation, and non-direct contact, frictional force is less, and part is not easily worn.
For reducing the axial runout in push rod 7 movement process, described inclined-plane is provided with annular groove, and described ceramic balls 6 is positioned at described annular groove.Annular groove projection drawing is in the axial direction positive round, and ceramic balls 6 can only roll along annular groove, play the guiding role, thus reduces push rod 7 amplitude of fluctuation in the axial direction further, avoids push rod 7 to be worn.End cam axle 7 does dynamic balance analysis with software simulation, dynamic balancing when relevant position boring loss of weight ensures to rotate.
Described push rod 7 is provided with the shaft shoulder, and one end of described Returnning spring 8 withstands on the described shaft shoulder, and the other end of described Returnning spring 8 is provided with the spring capping 10, withstand voltage filling body 11, pressure ring 12 and the gland nut 13 that are socketed in successively on described push rod 7.Spring capping 10 is connected with the inwall in push rod chamber, thus withstand voltage filling body 11, pressure ring 12 and gland nut 13 is fixed, and only has push rod 7 can be reciprocating under the effect of inclined-plane and Returnning spring 8; The setting of withstand voltage filling body 11 enhances the bearing capacity of push rod 7.
The described pump housing comprises and connecting successively: rear portion housing 2, middle casing 3, middle pump head 4 and front pump head 5, described end cam axle 1 is rotationally connected by bearing and described rear portion housing 2, described push rod chamber is positioned at described middle casing 3, described first hydraulic pressure cavity is positioned at described middle pump head 4, described media cavity is positioned at described front pump head 5, and described barrier film 15 is connected between described middle pump head 4 and front pump head 5.The pump housing is divided into multistage, facilitates batch process and assembling; During renewal part, only needing to take appropriate section apart, without the need to all taking apart, keeping in repair also more convenient.
Preferably, establish step surface in rear portion housing 2, step surface is connected by thrust-bearing with end cam axle 1, to ensure the thrust between end cam axle 1 and push rod 7.
Be provided with the second hydraulic pressure cavity in described middle casing 3, described second hydraulic pressure cavity is communicated with described first hydraulic pressure cavity and/or push rod chamber; Described second hydraulic pressure cavity is connected with safety valve 9.The same with existing hydraulic diaphragm pump, when the pressure of hydraulic oil exceeds safety valve 9 setting pressure, safety valve 9 take-off, to be nourished oil pocket by the hydraulic oil backflow compressed, there is repairing one-way valve in repairing chamber to hydraulic pressure cavity, and hydraulic pressure cavity has bleed valve.Structure about repairing chamber is prior art, and this example repeats no more, also not shown in figure.
Described import one-way valve 16 and Outlet check valves 14 are all arranged on the side of described front pump head 5.Certainly, according to the one-way valve having Returnning spring 8, then import one-way valve 16 and Outlet check valves 14 also can be installed on the end face of front end pump head.
Profile, described pump housing entirety is in straight cylinder type, and one end that end cam axle 1 stretches out the pump housing is connected with driver element.
As can be seen from the above embodiments, the structure that the utility model combines by adopting push rod 7 and end cam axle 1, replaces traditional crankshaft-link rod or eccentric mechanism, and the rotation of end cam axle 1 promotes push rod 7 to-and-fro motion, realize exerting pressure to hydraulic oil, and then the object driving barrier film 15 to do manual work; Its transmission part structure is simple, driving parts is few, power loss is little, transmission efficiency is high, flow is large, and volume is little, compact structure, installation are simple, and batch production can use die casting, and amount of finish is few, cost is low.This pump under equal flow pressure, weight is lighter, the less driver element of volume can use high pulling torque driving stepper motor or increase type star retarder deceleration, stepper motor is coordinated to be easy to the feature of digitizing and remote adjustment flow, the utility model can realize digital management, and many complete equipments can unified management.Its profile is straight cylinder type, is convenient to cleaning.
The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model know-why; can also make some improvement and replacement, these improve and replace and also should be considered as protection domain of the present utility model.
Claims (8)
1. a Hydraulic Diaphragm Metering Pump, it is characterized in that, comprise: the pump housing and be arranged in the described pump housing: end cam axle (1), push rod chamber, Returnning spring (8), media cavity, the first hydraulic pressure cavity, the center line in described push rod chamber and the axis of described end cam axle (1) are parallel to each other, described push rod chamber relatively described end cam axle (1) eccentric setting; The one end in described push rod chamber and described first hydraulic chamber into communication, the other end is relative with the end face of described end cam axle (1); Be provided with barrier film (15) between described media cavity and the first hydraulic pressure cavity, described media cavity is connected with import one-way valve (16) and Outlet check valves (14);
Described end cam axle (1) is rotatably connected in the described pump housing, and the end face of described end cam axle (1) one end is inclined-plane, and the other end stretches out the described pump housing and is connected with driver element;
Be provided with push rod (7) in described push rod chamber, described Returnning spring (8) is connected with described push rod (7), and described Returnning spring (8) offsets for the end and described inclined-plane keeping described push rod (7);
Hydraulic oil is equipped with in described first hydraulic pressure cavity and push rod chamber.
2. Hydraulic Diaphragm Metering Pump as claimed in claim 1, it is characterized in that, one end of described push rod (7) is provided with ceramic balls (6), and described push rod (7) is offseted by described ceramic balls (6) and described inclined-plane.
3. Hydraulic Diaphragm Metering Pump as claimed in claim 2, it is characterized in that, described inclined-plane is provided with annular groove, and described ceramic balls (6) is positioned at described annular groove.
4. Hydraulic Diaphragm Metering Pump as claimed in claim 1, it is characterized in that, described push rod (7) is provided with the shaft shoulder, one end of described Returnning spring (8) withstands on the described shaft shoulder, and the other end of described Returnning spring (8) is provided with and is socketed in the spring capping (10) on described push rod (7), withstand voltage filling body (11), pressure ring (12) and gland nut (13) successively.
5. Hydraulic Diaphragm Metering Pump as claimed in claim 1, it is characterized in that, the described pump housing comprises and connecting successively: rear portion housing (2), middle casing (3), middle pump head (4) and front pump head (5), described end cam axle (1) is rotationally connected by bearing and described rear portion housing (2), described push rod chamber is positioned at described middle casing (3), described first hydraulic pressure cavity is positioned at described middle pump head (4), described media cavity is positioned at described front pump head (5), described barrier film (15) is connected between described middle pump head (4) and front pump head (5).
6. Hydraulic Diaphragm Metering Pump as claimed in claim 5, it is characterized in that, described middle casing is provided with the second hydraulic pressure cavity in (3), and described second hydraulic pressure cavity is communicated with described first hydraulic pressure cavity and/or push rod chamber; Described second hydraulic pressure cavity is connected with safety valve (9).
7. Hydraulic Diaphragm Metering Pump as claimed in claim 5, it is characterized in that, described import one-way valve (16) and Outlet check valves (14) are all arranged on the side of described front pump head (5).
8. Hydraulic Diaphragm Metering Pump as claimed in claim 1, is characterized in that, described pump housing entirety is in straight cylinder type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520138475.7U CN204511830U (en) | 2015-03-11 | 2015-03-11 | A kind of Hydraulic Diaphragm Metering Pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520138475.7U CN204511830U (en) | 2015-03-11 | 2015-03-11 | A kind of Hydraulic Diaphragm Metering Pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204511830U true CN204511830U (en) | 2015-07-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520138475.7U Active CN204511830U (en) | 2015-03-11 | 2015-03-11 | A kind of Hydraulic Diaphragm Metering Pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204511830U (en) |
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2015
- 2015-03-11 CN CN201520138475.7U patent/CN204511830U/en active Active
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| GR01 | Patent grant |