CN205207804U - A unilateral control valve for plunger pump - Google Patents

A unilateral control valve for plunger pump Download PDF

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Publication number
CN205207804U
CN205207804U CN201521102577.XU CN201521102577U CN205207804U CN 205207804 U CN205207804 U CN 205207804U CN 201521102577 U CN201521102577 U CN 201521102577U CN 205207804 U CN205207804 U CN 205207804U
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CN
China
Prior art keywords
valve
pressure
plunger pump
control valve
way control
Prior art date
Application number
CN201521102577.XU
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Chinese (zh)
Inventor
王文姬
王华光
陈真
Original Assignee
赛克思液压科技股份有限公司
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Filing date
Publication date
Application filed by 赛克思液压科技股份有限公司 filed Critical 赛克思液压科技股份有限公司
Priority to CN201521102577.XU priority Critical patent/CN205207804U/en
Application granted granted Critical
Publication of CN205207804U publication Critical patent/CN205207804U/en

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Abstract

The utility model discloses an unilateral control valve for plunger pump, including the valve body, seted up pressure import and pressure export on the valve body, be provided with the pressure chamber in the valve body, the pressure import export with pressure and the pressure chamber communicates with each other, is provided with the valve rod in the pressure chamber, and valve rod one end is provided with the head, this head with the pressure import cooperatees, and the other end of valve rod passes the spring and wears to arrange in and fix in the supporting pad on the valve body, the one end of spring with the head cooperation that offsets, its other end with the supporting pad offsets and cooperates. The utility model has the advantages of: simple structure, compactness, control is sensitive, can in time, effectively reduce oil pressure in the pump chamber, avoids inhaling the sky phenomenon because of what reasons such as the inlet port resistance of pump is too big, the hydraulic pump rotational speed is too high, fluid viscosity is too big caused.

Description

A kind of one-way control valve for plunger pump
Technical field
The utility model relates to a kind of component of plunger pump, especially a kind of one-way control valve for plunger pump; Be specially adapted to metallurgical machinery, mining machinery, industrial machinery, the plunger pump in engineering machinery.
Background technique
One-way control valve is the strength member that plunger pump normally runs, and the performance of one-way control valve directly has influence on the service behaviour of plunger pump.Generally in order to isolated zone of high pressure and low pressure area or in order to assembly logic module in hydraulic system, can one-way valve be used, according to Placement, generally be divided into tubular type one-way valve, plate-type non-return valve and plug-in one-way valve.It is comparatively large generally all to there is volume in tubular type and gasket mounted one-way valve, and take up room many shortcomings, makes troubles to the layout of hydraulic system and follow-up assembling.Although common plug-in one-way valve reduces a lot than tubular type one-way valve and plate-type non-return valve volume, relative to the small-sized hydraulic system that level of integration is very high, still occupy many spaces.Along with the development of science and technology, machinery is also constantly to integrated, miniaturization, and it is more compact that this also just requires that the structure of each component needs, and volume is less.
Due to the inner each parts of plunger pump wearing and tearing, assembling the reason such as bad, gap apolegamy is improper, that plunger pump chamber inner fluid can be caused to leak is comparatively large, can cause pump chamber inner fluid overpressure when leaking larger.The Sealing such as main shaft oil sealing and housing seal pad can be damaged when pump chamber inner fluid overpressure, also can become difficulty because of plunger oil suction time serious, increase the contact force of piston shoes and return plate thus cause return plate to rupture, finally causing plunger pump to lose efficacy.Therefore need to arrange one-way valve to reduce the oil pressure in plunger pump chamber.
Summary of the invention
Technical problem to be solved in the utility model is the present situation for prior art, and provide structure simple, compact, volume is little, in time, effectively can reduce a kind of one-way control valve for plunger pump of oil pressure in pump chamber.
The utility model solves the problems of the technologies described above adopted technological scheme:
A kind of one-way control valve for plunger pump, include valve body, valve body offers pressure inlets and pressure export, pressure chamber is provided with in valve body, pressure inlets and pressure export communicate with described pressure chamber, valve rod is provided with in pressure chamber, valve rod one end is provided with end socket, this end socket matches with described pressure inlets, the other end of valve rod is placed through in the Support cushion be fixed on described valve body through spring, one end of spring offsets with described end socket and coordinates, and its other end offsets with described Support cushion and coordinates.
The technical measures optimized also comprise:
The surface of above-mentioned end socket is arc surface.
The pressure inlets side of above-mentioned pressure chamber is shaped with inclined-plane.
The number of above-mentioned pressure export is two, and two pressure exports are symmetricly set on the sidewall of described valve body.
The pressure inlets side of above-mentioned valve body extends radially outwardly and is formed with annular retaining ring.
The outer wall of above-mentioned valve body is shaped with outside thread.
Above-mentioned Support cushion inwardly protruding is formed with boss.
A kind of one-way control valve for plunger pump of the present utility model, comprise valve body, valve rod, spring and Support cushion, end socket on valve rod matches with pressure inlets, when end socket seals pressure inlets, one-way control valve is closed, and when pressure is greater than setting pressure, valve rod Compress Spring makes the import of end socket separating pressure, thus make conducting between pressure inlets and pressure export and one-way control valve is opened.This one-way control valve structure is simple, compact, controls sensitive, in time, effectively can reduce oil pressure in pump chamber, avoids the emptying phenomenon because the reasons such as the inlet port resistance of pump is excessive, oil hydraulic pump rotating speed is too high, oil viscosity is excessive cause.
In addition, the surface of end socket is arc surface, and arc surface and valve body are linear contact lay, can ensure the sealing of surface of contact better.
And the setting of annular retaining ring can limiting valve body install time axial displacement, make assembling convenient, effectively can improve efficiency of assembling.
Accompanying drawing explanation
Fig. 1 is sectional structure schematic diagram of the present utility model;
Fig. 2 is A portion enlarged view in Fig. 1;
Fig. 3 is this practical new scheme of installation.
Embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the utility model.
Be structural representation of the present utility model as shown in Figure 1 to Figure 3,
Reference character is wherein: valve body 1, pressure chamber 1a, inclined-plane 1b, pressure inlets 11, pressure export 12, annular retaining ring 13, outside thread 14, valve rod 2, end socket 21, arc surface 21a, spring 3, Support cushion 4, boss 41, housing 5, bonnet 6, oil distribution casing 7, S mouth, T mouth, L mouth.
As shown in Figure 1 to Figure 3,
A kind of one-way control valve for plunger pump, include valve body 1, valve body 1 offers pressure inlets 11 and pressure export 12, pressure chamber 1a is provided with in valve body 1, pressure inlets 11 and pressure export 12 communicate with described pressure chamber 1a, valve rod 2 is provided with in pressure chamber 1a, valve rod 2 one end is provided with end socket 21, this end socket 21 matches with described pressure inlets 11, the other end of valve rod 2 is placed through in the Support cushion 4 be fixed on described valve body 1 through spring 3, one end of spring 3 offsets with described end socket 21 and coordinates, and its other end offsets with described Support cushion 4 and coordinates.
When pressure inlets 11 place pressure is less than setting pressure, end socket 21 is formed with pressure inlets 11 and seals under the elastic force effect of spring 3, and one-way control valve is closed; When pressure inlets 11 place pressure is greater than setting pressure, valve rod 2 Compress Spring 3 moves right, and end socket 21 and pressure inlets 11 depart from, pressure inlets 11 and pressure export 12 conducting, and one-way control valve is opened.
In embodiment, the surface of end socket 21 is arc surface 21a.Adopt arc surface 21a to be surperficial end socket 21, make end socket 21 be linear contact lay with the contact of valve body 1, can the processing of valve body 1 be made more simple under the prerequisite ensureing sealing.
In embodiment, the pressure inlets side of pressure chamber 1a is shaped with inclined-plane 1b.Arranging of inclined-plane 1b ensures that end socket 21 is linear contact lay with valve body 1, avoids many places contact and affect its sealing.
In embodiment, the number of pressure export 12 is two, and two pressure exports 12 are symmetricly set on the sidewall of described valve body 1.
In embodiment, the pressure inlets side of valve body 1 extends radially outwardly and is formed with annular retaining ring 13.
In embodiment, the outer wall of valve body 1 is shaped with outside thread 14.
Valve body 1 adopts with installation place and is threaded, and structure is simple, easy for installation, is connected firmly; In valve body 1 installation process, due to the setting of annular retaining ring 13, limit the axial displacement of valve body 1, what namely limit valve body 1 is screwed into the degree of depth, thus valve body 1 is easier for installation.
In embodiment, Support cushion 4 inwardly protruding is formed with boss 41.The Support cushion side of spring 3 is placed on outside boss 41, makes the assembling of spring 3 convenient.
Scheme of installation as described in Figure 3, this one-way control valve is installed between housing 5 and bonnet 6, and oil distribution casing 7 is assemblied on bonnet 6.When the S mouth of hydraulic oil from bonnet 6 enters, entered in plunger cavity by the oil sucking window T mouth of oil distribution casing 7.Then hydraulic oil discharged from the oil extraction window of oil distribution casing 7 along with compressing while cylinder body rotation in plunger cavity.Can discharge from the L mouth of housing 5 when the Leakage Energy pressure in pump chamber is lower, when acting on the fluid on valve rod 2 and can overcoming spring force, one-way control valve is opened, and fluid flows out from the pressure export 12 of one-way control valve, thus reduces the pressure of housing inner fluid.
When the pressure of the pressure ratio inlet port fluid of hydraulic oil in housing 5 exceeds 0.5MPa, or the inlet port resistance of pump is excessive, oil hydraulic pump rotating speed is too high, viscosity that is fluid can cause pump oil suction not enough time excessive, can cause the appearance of plunger pump emptying phenomenon like this.Now, one-way control valve because the pressure reduction of hydraulic oil and inlet port fluid is opened in pump chamber, thus releases pressure, thus effectively can avoid the emptying phenomenon of pump.
Most preferred embodiment of the present utility model is illustrated, and the various change made by those of ordinary skill in the art or remodeling all can not depart from scope of the present utility model.

Claims (7)

1. the one-way control valve for plunger pump, include valve body (1), described valve body (1) offers pressure inlets (11) and pressure export (12), it is characterized in that: in described valve body (1), be provided with pressure chamber (1a), described pressure inlets (11) and pressure export (12) communicate with described pressure chamber (1a), valve rod (2) is provided with in described pressure chamber (1a), described valve rod (2) one end is provided with end socket (21), this end socket (21) matches with described pressure inlets (11), the other end of described valve rod (2) is placed through in the Support cushion (4) be fixed on described valve body (1) through spring (3), one end of described spring (3) offsets with described end socket (21) and coordinates, its the other end offsets with described Support cushion (4) and coordinates.
2. a kind of one-way control valve for plunger pump according to claim 1, is characterized in that: the surface of described end socket (21) is arc surface (21a).
3. a kind of one-way control valve for plunger pump according to claim 2, is characterized in that: the pressure inlets side of described described pressure chamber (1a) is shaped with inclined-plane (1b).
4. a kind of one-way control valve for plunger pump according to claim 3, it is characterized in that: the number of described pressure export (12) is two, two pressure exports (12) are symmetricly set on the sidewall of described valve body (1).
5. a kind of one-way control valve for plunger pump according to claim 4, is characterized in that: the pressure inlets side of described valve body (1) extends radially outwardly and is formed with annular retaining ring (13).
6. a kind of one-way control valve for plunger pump according to claim 5, is characterized in that: the outer wall of described valve body (1) is shaped with outside thread (14).
7. a kind of one-way control valve for plunger pump according to claim 6, is characterized in that: described described Support cushion (4) inwardly protruding is formed with boss (41).
CN201521102577.XU 2015-12-28 2015-12-28 A unilateral control valve for plunger pump CN205207804U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201521102577.XU CN205207804U (en) 2015-12-28 2015-12-28 A unilateral control valve for plunger pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201521102577.XU CN205207804U (en) 2015-12-28 2015-12-28 A unilateral control valve for plunger pump

Publications (1)

Publication Number Publication Date
CN205207804U true CN205207804U (en) 2016-05-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201521102577.XU CN205207804U (en) 2015-12-28 2015-12-28 A unilateral control valve for plunger pump

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106286187A (en) * 2016-08-30 2017-01-04 苏州品诺维新医疗科技有限公司 A kind of plunger displacement pump
CN107542638A (en) * 2016-06-28 2018-01-05 河南航天液压气动技术有限公司 One kind rotation bidirectional hydraulic pump
CN107542635A (en) * 2016-06-28 2018-01-05 河南航天液压气动技术有限公司 A kind of straight line bidirectional hydraulic pump

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107542638A (en) * 2016-06-28 2018-01-05 河南航天液压气动技术有限公司 One kind rotation bidirectional hydraulic pump
CN107542635A (en) * 2016-06-28 2018-01-05 河南航天液压气动技术有限公司 A kind of straight line bidirectional hydraulic pump
CN106286187A (en) * 2016-08-30 2017-01-04 苏州品诺维新医疗科技有限公司 A kind of plunger displacement pump

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