CN107575366A - A kind of Hydraulic Diaphragm Metering Pump with diaphragm protection function - Google Patents
A kind of Hydraulic Diaphragm Metering Pump with diaphragm protection function Download PDFInfo
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- CN107575366A CN107575366A CN201710981356.1A CN201710981356A CN107575366A CN 107575366 A CN107575366 A CN 107575366A CN 201710981356 A CN201710981356 A CN 201710981356A CN 107575366 A CN107575366 A CN 107575366A
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- cuticula
- pump head
- valve pocket
- valve element
- pump
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Abstract
The invention discloses a kind of Hydraulic Diaphragm Metering Pump with diaphragm protection function, the Hydraulic Diaphragm Metering Pump includes pump head, the pump head is provided with inlet, liquid outlet, medium channel, connecting hole, dielectric cavity, connected between the inlet, liquid outlet, medium channel, connecting hole and dielectric cavity and form the cavity of T-shaped, cuticula assembly is additionally provided with the pump head, the cuticula assembly is built in inside pump head and all parts link together.A kind of pump head of the Hydraulic Diaphragm Metering Pump with diaphragm protection function with built-in cuticula assembly, compared with prior art in pump head, the sealing of the pump head of the Hydraulic Diaphragm Metering Pump is significantly increased.Cuticula assembly structure is simple, its all parts is connected as a single entity, an entirety can be remained under any state, the position relationship, annexation between all parts of such cuticula assembly are all highly stable, and then whole cuticula assembly is had stable service behaviour.
Description
Technical field
The present invention relates to a kind of measuring pump, more particularly to a kind of Hydraulic Diaphragm Metering Pump with diaphragm protection function.
Background technology
Measuring pump is also referred to as constant displacement pump or proportioning pump, and it belongs to reciprocating displacement pump.In the prior art, measuring pump is according to excessively stream
Mode, which is classified, to be had：Plunger, piston type；Mechanical diaphragm type；Hydraulic diaphragm.Hydraulic Diaphragm Metering Pump by electric-motor drive mechanism,
Hydraulic system etc. is formed, and hydraulic system is made up of parts such as barrier film, pump heads.Pump head is provided with inlet, liquid outlet, medium and led to
Road, draining hole, dielectric cavity；Barrier film be connected to pump head provided with dielectric cavity this at.Hydraulic Diaphragm Metering Pump is deposited in the prior art
Defect is used at some：Diaphragm is under high pressure operating mode, and after being contacted with the part of the corresponding dielectric cavity of pump head, membrane surface corresponds to pump head
The plastic deformation of projection can be produced at draining hole, influences performance and the life-span of diaphragm, or even moment breakage；Diaphragm is non-
Under nominal situation, such as instantaneous superpressure, liquid outlet are blocked, and diaphragm is corresponded to produce to shear at pump head dielectric cavity draining hole and broken
Damage, cause to measure failure of pump.
Defect is used for solution is above-mentioned, prior art provides a kind of hydraulic diaphragm metering pump that can protect diaphragm,
Such as Chinese patent disclosed in 21 days June in 2006, Publication No. CN1789711A, patent name are with forward type protective plate
The patent of the hydraulic diaphragm metering pump of structure, the measuring pump are provided with a guide rod between the medium channel of pump head and dielectric cavity
Through hole, one guide rod of activity installation in guide rod through hole；In guide rod a protective plate, the other end of guide rod are connected with by diaphragm plate one end
It is movably connected on through medium channel, and by sealing screw on pump head；Pump head is provided with protective plate is suitable for cuticula plate shape
The depression counterbore of shape, thickness, in depression counterbore, at least provided with a connection medium channel and the through hole of dielectric cavity.The technology
Although the function of protection diaphragm is played, because sealing screw is externally mounted on pump head, it is necessary to open one on pump head
For installing the screwed hole of sealing screw, the screwed hole causes the sealing property of pump head to substantially reduce, and easily exists after long-term use of
Occurs the phenomenon leaked at sealing screw.
Only be connected with spring between guide rod and sealing screw, guide rod to direction where sealing screw move when can be by spring
Position-limiting action, but it is final when guide rod counter motion only stopped by diaphragm, therefore the company between guide rod and sealing screw
It is highly unstable to connect relation, guide rod easily departs from from spring.Because one end of guide rod is embedded in spring inner in the structure, lead
Embedded annexation can ensure that the stroke of guide rod is in normal value between bar and spring, if after guide rod and spring disengaging again
Very likely there is the situation that guide rod can not be normally embedded spring inner in secondary connection, and the stroke of such guide rod is just bigger than normal value
A lot, the function of protection diaphragm can not be realized by ultimately causing the cuticula device, greatly reduce the working stability of the cuticula device
Property.
The content of the invention
The technical problem to be solved in the present invention is to provide it is a kind of with good seal performance, stable work in work pump head one
Hydraulic Diaphragm Metering Pump of the kind with diaphragm protection function.
In order to solve the above technical problems, the present invention adopts the following technical scheme that：The Hydraulic Diaphragm Metering Pump includes pump head, institute
State pump head provided with inlet, liquid outlet, medium channel, connecting hole, dielectric cavity, the inlet, liquid outlet, medium channel,
Connected between connecting hole and dielectric cavity and form the cavity of T-shaped, cuticula assembly, the cuticula assembly bag are additionally provided with the pump head
Cuticula valve element, cuticula valve pocket are included, described cuticula valve element one end is in the form of a column, and the other end is in tabular, the column of the cuticula valve element
End is vertically set on the flat end, oil guiding hole is provided with inside the cylindrical end of the cuticula valve element, the cuticula valve element is in flat
The end width of tabular is at most connection hole width, and the cuticula valve pocket is fixedly connected on inside pump head, the pump head and cuticula
The link position of valve pocket is located in medium channel, and the cylindrical end of the cuticula valve element is movably connected in cuticula valve pocket by spring
Interior, the cuticula valve pocket inner space is connected by oil guiding hole with the cavity of the T-shaped of pump head, is provided with inside the cuticula valve pocket convex
Platform, the cylindrical end of the cuticula valve element through boss and are provided with jump ring.
The cuticula assembly of the present invention is located at the inside of pump head, and cuticula valve element and cuticula valve pocket link together all the time,
So cuticula assembly does not interfere with the original sealing property of pump head not only, and service behaviour is more stable.Compared with prior art,
The pump head of Hydraulic Diaphragm Metering Pump of the present invention has the advantages of good seal performance, stable work in work.
As a preference of the present invention, the boss is in a ring.The cylindrical end of cuticula valve element is spacing in boss by jump ring
Side, due to directly being contacted between jump ring and boss, so jump ring uniform stressed can be ensured to greatest extent using the boss of annular,
So as to the service life for lifting the using effect of jump ring, extending jump ring.
As a preference of the present invention, the pump head is being provided with the installation for installing cuticula valve pocket at medium channel
Hole, the cuticula valve pocket both sides are provided with engaging lug, and the cuticula valve pocket is fixedly connected inside pump head at engaging lug by screw,
One end of the cuticula valve pocket is located in mounting hole.The design can install cuticula additional on the basis of the original size of pump head is not changed
Assembly so that the technology has stronger implementation.
As a preference of the present invention, the cuticula valve element includes connecting pole and protective plate, the connecting pole and protective plate it
Between be fixedly connected, internal on the connecting pole to be provided with oil guiding hole, the protective plate width is at most connection hole width.Cuticula valve element
Using separate structure, on the one hand it is easy to the production and processing of cuticula valve element, can is on the other hand each portion according to service condition
Part selects more preferable material.
The present invention uses above-mentioned technical proposal：A kind of pump head of the Hydraulic Diaphragm Metering Pump with diaphragm protection function is with
Put formula cuticula assembly, compared with prior art in pump head, the sealing of the pump head of the Hydraulic Diaphragm Metering Pump is significantly increased.Shield
Film assembly structure is simple, and its all parts is connected as a single entity, and an entirety, such cuticula assembly can be remained under any state
All parts between position relationship, annexation it is all highly stable, and then make whole cuticula assembly that there is stable work
Performance.
Brief description of the drawings
The present invention is further elaborated with reference to the accompanying drawings and detailed description.
Fig. 1 uses schematic diagram for a kind of pump head of the Hydraulic Diaphragm Metering Pump with diaphragm protection function of the present invention.
Embodiment
A kind of Hydraulic Diaphragm Metering Pump with diaphragm protection function is provided with pump head, as shown in figure 1, pump head is provided with inlet
1st, liquid outlet 2, medium channel 3, connecting hole 4, dielectric cavity 5.Inlet 1 and liquid outlet 2 are located at the both sides of pump head, inlet respectively
Connected between 1 and liquid outlet 2 by medium channel 3.Dielectric cavity 5, the dielectric cavity 5 and medium channel 3 are provided with the side of pump head
Between connected by connecting hole 4.So as to connection and shape between inlet 1, liquid outlet 2, medium channel 3, connecting hole 4, dielectric cavity 5
T-shaped cavity.
Cuticula assembly is additionally provided with inside pump head, as shown in figure 1, cuticula assembly includes cuticula valve element, cuticula valve pocket 6.Shield
Film valve element is made up of connecting pole 7 and protective plate 8, and connecting pole 7 is in the form of a column, and is internally provided with oil guiding hole 9, and the oil guiding hole 9 is T-shaped,
One opening is provided with two openings at the middle part of connecting pole 7 positioned at one end of connecting pole 7.The shape of cross section of protective plate 8 and big
It is small all identical with the shape of cross section and size of connecting hole 4；Protective plate 8 is in round table-like, and one end width is more than other end width, and
The larger end of width is plane；The Breadth Maximum of protective plate 8 is identical with the width of connecting hole 4.The other end of connecting pole 7 is connected to
The home position at the less end of the width of protective plate 8, and be fixedly connected between protective plate 8 and connecting pole 7 by screw.Cuticula
Valve pocket 6 is tubular structure, and its outside is provided with two engaging lugs 10, and engaging lug 10 is provided with screw；Set in the inside of cuticula valve pocket 6
There is boss 11, boss 11 make it that the inner space of cuticula valve pocket 6 is trapezoidal.Spring is cased with outside the connecting pole 7 of cuticula valve element
12, one end of connecting pole 7 through cuticula valve pocket 6 boss 11 and expose the side of boss 11 jump ring 15 be installed so that
Cuticula valve element links together with cuticula valve pocket 6.Spring 12 is enclosed on connecting pole 7, and its one end withstands on the boss 11 of cuticula valve pocket 6
On, the other end withstands on the less end of width in protective plate 8.
Pump head is being provided with mounting hole 13 at medium channel 3, on engaging lug 10 of the cuticula valve pocket 6 by its both sides
After screw is fixed in pump head, one end of cuticula valve pocket 6 is arranged in mounting hole 13.The position of mounting hole 13 just face connects
The position of hole 4.Under the connection effect of oil guiding hole 9 inside connecting pole 7, the inner space of cuticula valve pocket 6 can pass through Oil Guide
Hole 9 connects with connecting hole 4, and then is connected with the cavity of the T-shaped of pump head.
Diaphragm 14 be arranged on pump head be provided with dielectric cavity 5 this at.During nature, cuticula valve element is pushed up to diaphragm by spring 12
14 places direction.Due to being provided with jump ring 15 in one end of connecting pole 7, therefore whole cuticula valve element can only be pushed outwardly by spring 12
One section of limited distance, now protective plate 8 just contacted with diaphragm 14.
As shown in figure 1, when medium enters dielectric cavity 5, separated between feed liquor rear film 14 and protective plate 8.When medium is arranged
When going out dielectric cavity 5, diaphragm 14 moves to cuticula assembly position.Diaphragm 14 also promotes cuticula valve element while promotion medium
Move together.Cuticula valve element is promoted by diaphragm 14 to the position of cuticula valve pocket 6 all the time in this process, therefore spring 12 is pressed
Contracting；Medium inside cuticula valve pocket 6 is discharged by oil guiding hole 9 to connecting hole 4.Size shape and company due to protective plate 8
It is identical to connect the size shape of hole 4, therefore, protective plate 8 can enter in connecting hole 4.When protective plate 8 moves to the larger end of its width
Plane and the place face of dielectric cavity 5 when maintaining an equal level, protective plate 8 is blocked by cuticula valve pocket 6, and now whole diaphragm 14 is towards dielectric cavity
The face of 5 positions by pump head and protective plate 8 support, thus diaphragm 14 be protected, avoid it from deforming upon.
Cuticula assembly in the Hydraulic Diaphragm Metering Pump is arranged on inside pump head, the perforate on pump head is avoided, so as to protect
The integraty of pump head is demonstrate,proved, compared with prior art, the sealing property of pump head greatly improves.It is integrally formed after the assembling of cuticula assembly, respectively
There is stable position relationship, annexation between individual part, and then make cuticula assembly that there is stable service behaviour.
Claims (4)
1. a kind of Hydraulic Diaphragm Metering Pump, the Hydraulic Diaphragm Metering Pump includes pump head, and the pump head is provided with inlet (1), gone out
Liquid mouth (2), medium channel (3), connecting hole (4), dielectric cavity (5), the inlet (1), liquid outlet (2), medium channel (3),
Connected between connecting hole (4) and dielectric cavity (5) and form the cavity of T-shaped, cuticula assembly is additionally provided with the pump head, its feature exists
In：The cuticula assembly includes cuticula valve element, cuticula valve pocket (6), and described cuticula valve element one end is in the form of a column, and the other end is in flat board
Shape, the cylindrical end of the cuticula valve element are vertically set on the flat end, are provided with and lead inside the cylindrical end of the cuticula valve element
Oilhole (9), the cuticula valve element are at most connecting hole (4) width in the flat end width, and the cuticula valve pocket (6) is fixed
It is connected to inside pump head, the link position of the pump head and cuticula valve pocket (6) is located in medium channel (3), the cuticula valve element
Cylindrical end be movably connected in by spring (12) in cuticula valve pocket (6), cuticula valve pocket (6) inner space passes through oil guiding hole
(9) cavity with the T-shaped of pump head is connected, and boss (11), the cylindrical end of the cuticula valve element are provided with inside the cuticula valve pocket (6)
Through boss (11) and jump ring (15) is installed.
2. Hydraulic Diaphragm Metering Pump according to claim 1, it is characterised in that：The boss (11) is in a ring.
3. Hydraulic Diaphragm Metering Pump according to claim 1, it is characterised in that：The pump head is positioned at medium channel (3) place
Provided with the mounting hole (13) for installing cuticula valve pocket (6), cuticula valve pocket (6) both sides are provided with engaging lug (10), the shield
Film valve pocket (6) is fixedly connected inside pump head at engaging lug (10) place by screw, and one end of the cuticula valve pocket (6) is positioned at installation
In hole (13).
4. Hydraulic Diaphragm Metering Pump according to claim 1, it is characterised in that：The cuticula valve element include connecting pole (7) and
Protective plate (8), it is fixedly connected between the connecting pole (7) and protective plate (8), it is internal on the connecting pole (7) to be provided with oil guiding hole
(9), protective plate (8) width is at most connecting hole (4) width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710981356.1A CN107575366A (en) | 2017-10-20 | 2017-10-20 | A kind of Hydraulic Diaphragm Metering Pump with diaphragm protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710981356.1A CN107575366A (en) | 2017-10-20 | 2017-10-20 | A kind of Hydraulic Diaphragm Metering Pump with diaphragm protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107575366A true CN107575366A (en) | 2018-01-12 |
Family
ID=61037481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710981356.1A Pending CN107575366A (en) | 2017-10-20 | 2017-10-20 | A kind of Hydraulic Diaphragm Metering Pump with diaphragm protection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107575366A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4507062A (en) * | 1982-01-23 | 1985-03-26 | Chemie Und Filter Gmbh | Diaphragm pump |
| CN201884250U (en) * | 2010-06-08 | 2011-06-29 | 德帕姆(杭州)泵业科技有限公司 | Hydraulic diaphragm metering pump with diaphragm protection function |
| CN201972901U (en) * | 2011-04-09 | 2011-09-14 | 杭州大潮石化设备有限公司 | Hydraulic end structure of hydraulic diaphragm type reciprocating pump capable of rapidly replacing diaphragm |
| CN203476664U (en) * | 2013-09-25 | 2014-03-12 | 浙江力聚热水机有限公司 | Membrane pump head |
| CN203925957U (en) * | 2014-04-25 | 2014-11-05 | 胜瑞兰工业设备（苏州）有限公司 | Pull-rod spring composite membrane structure |
| 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 |
-
2017
- 2017-10-20 CN CN201710981356.1A patent/CN107575366A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4507062A (en) * | 1982-01-23 | 1985-03-26 | Chemie Und Filter Gmbh | Diaphragm pump |
| CN201884250U (en) * | 2010-06-08 | 2011-06-29 | 德帕姆(杭州)泵业科技有限公司 | Hydraulic diaphragm metering pump with diaphragm protection function |
| CN201972901U (en) * | 2011-04-09 | 2011-09-14 | 杭州大潮石化设备有限公司 | Hydraulic end structure of hydraulic diaphragm type reciprocating pump capable of rapidly replacing diaphragm |
| CN203476664U (en) * | 2013-09-25 | 2014-03-12 | 浙江力聚热水机有限公司 | Membrane pump head |
| CN203925957U (en) * | 2014-04-25 | 2014-11-05 | 胜瑞兰工业设备（苏州）有限公司 | Pull-rod spring composite membrane structure |
| 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 |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180112 |