CN206429384U - High-pressure plunger pump and its valve module - Google Patents

Abstract

Disclosure high-pressure plunger pump and its valve module.Wherein valve element includes the core body and core cap for assembling and being fixed together.Core body is from upper end insertion medium pore, and core body can up and down be moved along longitudinally opposed in medium pore, and core cap is constructed to be permeable to seal medium pore.Do not allowed according to the high-pressure plunger pump and its valve module of the application fragile.

Description

High-pressure plunger pump and its valve module

Technical field

The application is related to high-pressure plunger pump, more particularly to the high-pressure plunger pump with valve module.

Background technology

High-pressure plunger pump is widely used in high-pressure fuel oil system, in the course of work of pump, piston reciprocation motion, valve The action that component is continually opened and closed, pump realizes suction fuel oil and the action that fuel oil pressurizes.However, such as Fig. 1 institutes Show, the valve element 2 of valve module 10 repeatedly moves up and down with respect to valve body 1 to be easily damaged.For example, due to valve element 2 and valve body 1 repeatedly Ground is collided, and fracture 28 may be produced at the groove 27 between the core cap 22 and core body 21 of valve element 2.

Therefore, it is necessary to improve to overcome technical problem present in prior art.

The content of the invention

The problem of valve module that the application mainly solves high-pressure plunger pump is easily damaged.

In order to solve the above technical problems, on the one hand the application provides valve module, it includes：

Valve body, is provided with medium pore and multiple branched holes, and the medium pore is extended longitudinally in relative upper end with Between end, the upper end is by the center of the valve body top surface, and the lower end is the cecum extended into the valve body, described point Branch hole includes relative the inner and outer end respectively, and described the inner is communicated in the lower end of the medium pore, and the outer end passes through described The side face of valve body；And

Valve element, it includes the core body and core cap for assembling and being fixed together, and the core body is from upper end insertion is described In central aperture, the core body can be reciprocated along longitudinally opposed in the medium pore, and the core cap, which has, is more than the center The radial dimension in hole and it is outer and be constructed to be permeable to seal the medium pore positioned at the medium pore.

The application on the other hand provide high-pressure plunger pump, it include housing, camshaft, cam follower, plunger and Aforementioned valve assemblies, the camshaft can be rotatably mounted to the housing around horizontal rotating shaft, and the camshaft of rotation passes through The cam follower drives the plunger to be moved back and forth along longitudinal direction between intake stroke and compression travel, in the suction High-pressure plunger pump described in stroke sucks fluid, and high-pressure plunger pump pressurizes fluid described in the compression travel.

Because the core body by being fixed together and core cap are assembled into valve element, therefore, the material of core body and core cap can be adopted With the material for being adapted to respective function.For example, core cap is manufactured by metal material, the density of material of core body is less than core cap, the material of core body Material is selected from following material：Alloy in lightweight, ceramics, polymer of lightweight etc., such as foamed aluminium, titanium alloy, magnesium alloy, ceramics, carbon are fine Dimension, PTFE（Polytetrafluoroethylene (PTFE)）, nylon and nitrile rubber.Core cap bonds together with core body.The material of core cap can be right well Medium pore, which is realized, to be opened and closed, and the material of core body can be slided without being easily damaged repeatedly in medium pore.Moreover, the material of core body Density ratio core cap is small, and the total quality of this valve element is lighter than the valve element of all-metal material, therefore and produces at the same speed Momentum it is smaller, impact force can be reduced and reduce damage.So not allowed according to the high-pressure plunger pump and its valve module of the application It is fragile.

Brief description of the drawings

The detailed description of detailed description below is referred to reference to accompanying drawing, the application will be more fully appreciated.Wherein：

Fig. 1 shows a kind of close-up schematic view at the valve element position of the high-pressure plunger pump of existing embodiment；

Fig. 2 is shown according to a kind of schematic diagram of the high-pressure plunger pump of embodiment of the application；

Fig. 3 shown according to a kind of schematic diagram of the valve module of embodiment of the application, wherein for ease of illustration, Core body is in decomposing state with core cap；And

Fig. 4 shows the schematic diagram being arranged on according to a kind of valve module of embodiment of the application in high potential assembly.

Embodiment

The embodiment of the application is described in detail below in conjunction with the accompanying drawings.

Referring to high-pressure plunger pump 100 shown in Fig. 1 includes housing 9, camshaft 8, cam follower 7, plunger 6 and valve Component 10.Camshaft 8 can be rotatably mounted to housing 9 around horizontal rotating shaft X.

Please refer to shown in Fig. 2 to 4, valve module 10 includes valve body 1 and valve element 2.

Medium pore 11 and multiple branched holes 12 are set in valve body 1.Medium pore 11 has the He of upper end 111 relative in the vertical Lower end 112.Medium pore 11 is extended longitudinally between upper end 111 and lower end 112.Upper end 111 passes through in the top surface 13 of valve body 1 Centre, lower end 112 is the cecum extended into valve body 1, that is to say, that lower end 112 does not penetrate bottom surface 14.Branched hole 12 is wrapped respectively Include relative the inner 121 and outer end 122.The lower area of side face 15 is recessed to middle part, upper area relatively protrude so as to periphery Cavity is tightly engaged.The inner 121 connects the lower end 112 of medium pore 11, the lower area for the side face 15 that outer end 122 passes through valve body 1.

Incorporated by reference to emphasis as shown in fig.2, valve element 2 includes the core body 21 and core cap 22 for assembling and being fixed together, core body 21 from the insertion of upper end 111 medium pore 11, and core body 21 can up and down be moved along longitudinally opposed in medium pore 11, and core cap 22 has More than medium pore 11 radial dimension and outside centrally located hole 11.Core cap 22 is configured to the shape of identical medium pore 11, in core cap During 22 contact medium pore 11, core cap 22 can seal medium pore 11.Core cap 22 and core body 21 both can by different material manufactures, Then bond together.For example, core cap 22 is manufactured by metal material, the material of core body 21 is selected from following material：Ceramics, rubber and Plastics.The density of material of core body 21 is less than core cap 22.Feasibly, the density of material of core body 21 is less than the density of material of core cap 22 25%, or core body 21 density of material be less than core cap 22 density of material 15%.The bottom of core cap 22 sets prominent connector 221, the top of core body 21 sets depression 211, and connector 221 is inserted and fixed in depression 211.Core cap 22 is with core body 21 by strong Power bonding agent is adhered together, and the interface Nian Jie with core body 21 of core cap 22 sets the concaveconvex structure 222 of increase surface area.

Operationally, the camshaft 8 of rotation drives plunger 6 along longitudinal direction by cam follower 7（The upper and lower illustrated To）In intake stroke（Illustrate in downward direction）With compression travel（Illustrate in downward direction）Between move back and forth.Meanwhile, Valve element 2 can move longitudinally relative to valve body 1 between closed position and open position, and in closed position, core cap 22 is close to center Hole 11 and closed, in open position, core cap 22 leaves medium pore 11 and opened it.In intake stroke, the core of valve element 2 Cap 22 can open medium pore 11, can suck fluid by the high-pressure plunger pump 100 of medium pore 11.In compression travel, valve element 2 Core cap 22 can close central hole 11 and the fluid pressurizeed by plunger 6 can be prevented to pass through medium pore 11, high-pressure plunger pump 100 Fluid is pressurizeed.

Because the core body 21 and core cap 22 by being fixed together are assembled into valve element 2, therefore, the material of core body 21 and core cap 22 Material can be using the material for being adapted to respective function.The material of core cap 22 can realize opening and closing, core body to medium pore well 21 material can be slided without being easily damaged repeatedly in medium pore.Moreover, the density of material of core body 21 is smaller than core cap 22, this valve The total quality of core 2 is lighter than the valve element 2 of all-metal material, therefore and the momentum that produces at the same speed is smaller, can reduce Impact force and reduce damage.So not allowed according to the high-pressure plunger pump and its valve module of the application fragile.

Above embodiment is merely to illustrate the application, and the not limitation to the application, relevant technical field Those of ordinary skill, in the case where not departing from scope of the present application, can also make a variety of changes and modification.Therefore it is all etc. Same technical scheme falls within the category of the application, and the scope of patent protection of the application should be defined by the claims.

Claims (10)

1. valve module（10）, it is characterised in that it includes：

Valve body（1）, it is provided with medium pore（11）And multiple branched holes（12）, the medium pore（11）Extend longitudinally relative Upper end（111）And lower end（112）Between, the upper end（111）Pass through the valve body（1）Top surface（13）Center, it is described under End（112）To extend into the valve body（1）Interior cecum, the branched hole（12）Include relative the inner respectively（121）With it is outer End（122）, described the inner（121）It is communicated in the medium pore（11）Lower end（112）, the outer end（122）Pass through the valve Body（1）Side face（15）；And

Valve element（2）, it includes the core body for assembling and being fixed together（21）And core cap（22）, the core body（21）From the upper end （111）Insert the medium pore（11）In, the core body（21）Can be along longitudinally opposed in the medium pore（11）Reciprocate, institute State core cap（22）With more than the medium pore（11）Radial dimension and positioned at the medium pore（11）It is outer and be configured to Can the sealing medium pore（11）.

2. valve module according to claim 1（10）, wherein, the core body（21）Density of material be less than the core cap （22）.

3. valve module according to claim 1（10）, wherein, the core body（21）Density of material be less than the core cap（22） Density of material 25%.

4. valve module according to claim 1（10）, wherein, the core body（21）Density of material be less than the core cap（22） Density of material 15%.

5. valve module according to claim 1（10）, wherein, the core cap（22）Manufactured by metal material, the core body （21）Material be selected from following material：Foamed aluminium, titanium alloy, magnesium alloy, ceramics, carbon fiber, PTFE, nylon and nitrile rubber.

6. valve module according to claim 5（10）, wherein, the core cap（22）With the core body（21）Bond together.

7. valve module according to claim 5（10）, wherein, the core cap（22）Bottom sets prominent connector（221）, The core body（21）Top sets depression（211）, the connector（221）It is inserted and fixed in the depression（211）In.

8. valve module according to claim 6（10）, wherein, the core cap（22）With the core body（21）The interface of bonding is set Put the concaveconvex structure of increase surface area（222）.

9. high-pressure plunger pump（100）, it is characterised in that it includes housing（9）, camshaft（8）, cam follower（7）, post Plug（6）And according to any one of claim 1 to 8 valve module（10）, the camshaft（8）Can be around horizontal rotating shaft（X） It is rotatably mounted to the housing（9）, the camshaft of rotation（8）Pass through the cam follower（7）Drive the post Plug（6）Moved back and forth along longitudinal direction between intake stroke and compression travel, the high-pressure plunger pump described in the intake stroke （100）Suck fluid, the high-pressure plunger pump described in the compression travel（100）Fluid is pressurizeed.

10. high-pressure plunger pump according to claim 9（100）, wherein, the valve element described in the intake stroke（2）'s Core cap（22）The medium pore can be opened（11）And the medium pore can be passed through（11）Suck fluid, the institute in the compression travel State valve element（2）Core cap（22）Can the closing medium pore（11）And can prevent by the plunger（6）The fluid pressurizeed passes through The medium pore（11）.