CN1603605A - Diaphragm pump structure for improving assembling reliability - Google Patents
Diaphragm pump structure for improving assembling reliability Download PDFInfo
- Publication number
- CN1603605A CN1603605A CNA2004100831961A CN200410083196A CN1603605A CN 1603605 A CN1603605 A CN 1603605A CN A2004100831961 A CNA2004100831961 A CN A2004100831961A CN 200410083196 A CN200410083196 A CN 200410083196A CN 1603605 A CN1603605 A CN 1603605A
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- China
- Prior art keywords
- lid
- barrier film
- diaphragm pump
- pump
- twist lock
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention provides a diaphragm pump device. The diaphragm pump device is provided with the body forming an outline, and having an opening at an end, the diaphragm closing the opening of the body, and forming a pumping chamber in the body, a cover member installed at the opposite side to the diaphragm and forming an atmospheric chamber inside. The body and the cover member are fastened with a screw to hold the diaphragm narrowly. A corotation preventing member is interposed in the narrow position of the diaphragm with the body and the cover member.
Description
Technical field
The present invention relates to be used for the diaphragm pump of the fuel filter of diesel engine of vehicle, relate in particular to improvement structure in order to this diaphragm pump that improves its assembly reliability.
Background technique
Figure 17 illustrates typical common line (rail altogether) oil-fired system that is used for diesel engine of vehicle.This oil-fired system is basically by jet pump 1, common line 2, sparger 3 (for for purpose of brevity, only illustrating), fuel tank 4 and diesel-oil filter 5.Jet pump 1 work, thus the supplying fuel of pressurization is arrived common line 2, and sparger 3 from each cylinder that is stored in motor is injected again conversely for it.The arrow of black represent fuel oil from fuel tank 4 to sparger 3 flow.The arrow of white represents that fuel oil turns back to flowing of fuel tank 4 from sparger 3.
Usually, fuel oil is mixed with impurity such as dust, iron rust, carbon, sludge and steam, gets rusty for fear of mechanical wear and sparger 3, and these impurity remain to be removed from fuel oil, with endurance and the stability of guaranteeing power operation.Utilize diesel-oil filter 5 that this impurity is removed from fuel oil.When the impurity level of the bottom that is deposited on diesel-oil filter 5 exceeds a given boundary, drain cock is opened, thereby impurity is discharged diesel-oil filter 5, but have a spot of impurity to remain in the diesel-oil filter 5 usually.And, invade air in the fuel oil and will be transferred at fuel oil and produce some problems in the process of sparger 3.For addressing this is that, diesel-oil filter 5 is provided with manual diaphragm pump 6, as shown in figure 18, this manual diaphragm pump work, thus with water with enter the liftoff discharge of being separated by of fuel oil in the oil-fired system or air.
As shown in figure 18, manual diaphragm pump 6 is installed in the top of diesel-oil filter 5.Diaphragm pump 6 comprises the body 7 that limits an outer pump case, be connected to fluid input pipe 9 and the outer pipe 10 on the body 7 and be formed on pump chamber 8 in the body 7.
In pump chamber 8, be provided with valve 15 and disc spring 16.Disc spring 16 is maintained between barrier film 11 and the valve 15, so that promote barrier film 11 on the direction that pump chamber 8 volumes are increased.In the normal manipulation mode of diesel-oil filter 5, shown in black arrow, fuel oil flows through diesel-oil filter 5 along path a, b, c and d, and in diesel-oil filter 5, impurity is filtered off from fuel oil and 10 discharges along path e from fluid outlet pipe.The vertical movement barrier film 11 by promoting knob 14 repeatedly can be removed the water that accumulates in the diesel-oil filter 5 or discharge the air of invading in the oil-fired system.
As mentioned above, be crimped onto on the upper periphery of body 7 by covering 12 periphery, thereby barrier film 11 is clipped between the said two devices, barrier film 11 can be installed on the body 7.Before curling, lid 12 has the annular end 17 of a straight downward extension, shown in the dotted line A among Figure 18.To cover 12 according to the following steps curls.At first, lid 12 is placed on the upper end of body 7.Next, the outer surface of the annular end 17 of the roller 18a abutting cap 12 of one HEMMING MACHINE 18 is placed, on the direction shown in white arrow f, push then, up to annular end 17 with right-angle bending, shown in solid line B, on the direction shown in the arrow g, rotate diaphragm pump 6 simultaneously.
Yet there is following problems in diaphragm pump 6 in 12 the process covered of curling.If comprise the part of interfering, must after being curled, lid 12 assemble this part so with HEMMING MACHINE 18 at diaphragm pump 6 diaphragm pump 6 when direction g rotates.This will cause restricted assemble sequence, and reduce the design freedom of diaphragm pump 6.
In recent years, when automobile is swiped, need be with each isolation of components resin, metal, rubber etc., with recycling or abandon them.Yet, curl and to cause dismounting at diaphragm pump 6, that is to say, each isolation of components is become in the process of different materials type to encounter difficulties.
For avoiding this problem, lid 12 can be twisted by screw thread and be connected on the body 7, but, it has run into other problems, promptly owing to lid 12 is formed from a resin, and diaphragm pump 11 is made by rubber, to cause diaphragm pump 11 to rotate on the body 7 to be fixed to lid 12 rotations along with the rotation of lid 12, this can cause the wearing and tearing of diaphragm pump 11 or mistake occurs in the installation of diaphragm pump 11, and screw makes that covering 12 is easy to unclamp from body 7, therefore in case cover 12 and pull down from body 7, it will cause the refitting mistake of breaking of diaphragm pump 11 or diaphragm pump 11.
Day disclosure special permission No.9-133059 discloses the diaphragm pump of the above-mentioned type.
Summary of the invention
Therefore, main purpose of the present invention is to avoid the defective of prior art.
Another object of the present invention provides a kind of improved diaphragm pump structure, and this diaphragm pump is fixed on the body in order to covering easily, and do not produce diaphragm pump do not expect rotation, but make will cover to pull down and become difficult from body.
According to an aspect of the present invention, provide a kind of diaphragm pump, this diaphragm pump can be installed in the diesel-oil filter of the oil-fired system that is used for automobile.This diaphragm pump comprises: (a) limit the body of an outer pump case, this body has an opening end; (b) barrier film, it is installed on this body, sealing this opening end, thereby limits a pump chamber in this body; (c) lid, its (by being threaded) twisted and to be connected on this body so that with diaphragm clip between lid and body, thereby in lid, limit an air chamber; (d) manual operational unit, this manual operational unit are used so that the barrier film resiliently deformable; (e) fluid input and outlet pathway, it leads to pump chamber; (f) valve system, the work of this valve system is to set up selectively and to block connection between pump chamber and fluid input path and pump chamber and the fluid output path; (g) spring, this spring is in order to promote this manual operational unit, so that this barrier film is out of shape on the direction that continues to increase along the pump chamber volume; And (h) twist lock, it places this body that keeps this barrier film and the gap of this lid formation.The rotational lock that barrier film produced along with the relative rotation between lid and the body when this twist lock was screwed into the on the body in order to will work as this lid.
Said structure will make the connection between body and the lid be more prone to.The possibility that barrier film rotates along with the relative rotation between body and the lid is got rid of in the use of twist lock, has therefore avoided the refitting mistake of its leakage or barrier film.
In preference pattern of the present invention, twist lock has the leak test path, and this path is in order to the escape of liquid between monitoring barrier film and the body.
This leak test path can be formed with holes, and this hole extends through twist lock, to be communicated with the inside and outside of twist lock.
Lid can have vertical wall and formation inclined-plane on its outer surface.This vertical wall vertically extends from the outer surface of lid, so that receive along the moment of torsion that covers on the direction that is fixed on the body, thereby makes lid be more prone to being connected of body.The geometrical shape on this inclined-plane is constructed like this, to discharge the directive effect moment of torsion thereon that unclamps along lid from body, will cover the difficulty of dismantling from body thereby increase.
Can form a groove or a hole in this inclined-plane, an instrument can be engaged in this groove or the hole, unclamps thereby will cover from body.
This diaphragm pump can be installed on the diesel-oil filter.
Description of drawings
From the detailed description and accompanying drawing that hereinafter provide about the preferred embodiments of the present invention, can more fully understand the present invention, yet, invention is not to be considered as being limited in these specific embodiments, on the contrary, these preferred embodiments provide just to the purpose of explaining and understanding.
In the accompanying drawings:
Fig. 1 is the longitudinal cross-section view that the diesel-oil filter that is provided with diaphragm pump of the first embodiment of the present invention is shown;
Fig. 2 is the local amplification sectional view that the internal structure of the diaphragm pump shown in Fig. 1 is shown;
Fig. 3 illustrates the twist lock of diaphragm pump shown in Figure 2 and the plan view of the pump housing;
Fig. 4 is the plan view that an improved lid is shown, and it is designed so that and is easy to this lid is fixed on the pump housing;
Fig. 5 is the side view of Fig. 4;
Fig. 6 is the partial section that an improved twist lock is shown;
Fig. 7 is the plan view of Fig. 6;
Fig. 8 is the plan view that second kind of improved lid is shown, and it is designed to be convenient to this lid and unclamps from the pump housing;
Fig. 9 is the side view of Fig. 8;
Figure 10 is the plan view that the third improved lid is shown, and it is designed to be convenient to this lid is fixed on the pump housing;
Figure 11 is the side view of Figure 10;
Figure 12 is the plan view that the 4th kind of improved lid is shown, and it is designed to be convenient to this lid and unclamps from the pump housing;
Figure 13 illustrates the side view that is used for lid is fixed to the fastened tools on the pump housing;
Figure 14 is the plan view of Figure 13;
Figure 15 illustrates the side view that is used for back off tool that lid is unclamped from the pump housing;
Figure 16 is the plan view of Figure 15;
Figure 17 is the skeleton diagram that the typical common line oil-fired system that is used for diesel engine of vehicle is shown;
Figure 18 is the partial section that the internal structure of the conventional diaphragm pump on the diesel-oil filter that is installed in as shown in figure 17 is shown.
Embodiment
With reference to the accompanying drawings, wherein identical reference character is represented the same parts in some accompanying drawings, and especially referring to Fig. 1, it shows the diaphragm pump 35 that is provided with diesel-oil filter 20 according to the present invention, and it can be installed in the oil-fired system of diesel engine of vehicle.
The cap 22 of the opening end that diesel-oil filter 20 comprises the cup-shaped housing 21 that limits a shell, be removably mounted on housing 21 and place filtrating equipment 23 in the housing 21.
Housing 21 is made by resinous hollow cylinder, and it has a upper opening.On the excircle of the upper end of housing 21, cut screw thread 21a.
Filtrating equipment 23 is made up of fuel path pipe 23a, filter element 23b, the lower end sheet 23d that has the upper head plate 23c of hole (not shown) and have a hole (not shown), wherein forms this filter element 23b by (or a plurality of) sheet material with the coaxial roll extrusion of this fuel path pipe 23a.Fuel path pipe 23a extends through the longitudinal center of filtrating equipment 23.
Filtrating equipment 23 is placed in the housing 21, and defines upper chamber 25 and lower chambers 26 in the housing 21.Isolated water is trapped in the lower chambers 26 usually from fuel oil.One drain cock and a water level sensor (all not shown) are installed in the housing 21.When the water yield arrived a given boundary, drain cock was opened, thereby water is discharged in lower chambers 26.
Cap 22 is formed from a resin, and integrally formed with diaphragm pump 35.Cap 22 has supplying fuel pipe 27 and the fuel emission pipe 28 that is connected thereto on the sidewall.Supplying fuel pipe 27 leads to the pump chamber 46 that is formed in the cap 22, as illustrated in fig. 1 and 2.Fuel emission pipe 28 leads to the upper chamber 25 of housing 21.First safety check 29 is placed between supplying fuel pipe 27 and the pump chamber 46, is used for only allowing that fuel oil flows to pump chamber 46.Second safety check 30 is flowed to fuel path pipe 23a in order to only to allow fuel oil from pump chamber 46 by between the fuel path pipe 23a of free pump chamber 46 and filtrating equipment 23.
By filtrating equipment 23 being placed in the housing 21, utilizing liner 24 that cap 22 is assemblied in the upper, open end of housing 21 and the tight engagement that a draw-barring 31 is fixed with foundation and screw thread 21a, cap 22 can be connected on the housing 21, wherein this liner 24 is installed in the annular groove that is formed at the cap bottom.When needs are changed filtrating equipment 16, according to cap 22 being pulled down with above-mentioned opposite order.
After cap 22 was connected on the housing 21, fuel oil was along path flow, shown in arrow A, B, C, D and E.Specifically, in case it enters supplying fuel pipe 27, fuel oil at first flows into pump chamber 46 along path A by first safety check 29.Fuel oil passes through second safety check 30 and fuel path pipe 23a along path B and C then, and arrives lower chambers 26.In lower chambers 26, water is isolated from fuel oil.Afterwards, fuel oil flows along path D and E, and flows out fuel emission pipe 28 by filtrating equipment 23, wherein in this filtrating equipment 23 impurity is removed from fuel oil.
As mentioned above, the top unitary moulding of diaphragm pump 35 and cap 22.Diaphragm pump 35 is made up of body 40, lid 50, barrier film 60, hand knob 65 and twist lock 70.Body 40 plays the effect of shell, and is formed with opening 41 in the top.Lid 50 is assemblied on the body 40, with sealing opening 41.Barrier film 60 is sandwiched in body 40 and covers between 50.Knob 65 can be manually turned, with moving regulator 60 vertically, as shown in the figure.Twist lock 70 is placed in barrier film 60 and covers between 50, in order to prevent the relative rotation between them.
The bottom of central boss 65 is slidingly fitted in to be covered in 50 the column part 51.Although do not illustrate, (or a plurality of) groove is formed on the excircle of central boss 65b or covers on the inner circumference of 50 column part 51, so that set up the connection between air chamber 57 and the atmosphere environment.
As mentioned above, along with internal thread 56 engagements of outside thread 43 with the outer circle wall 55 of lid 50 of the heavy wall 42 of body 40, whereby barrier film 60 is remained on firmly cover 50 and body 40 between, thereby finish being connected of diaphragm pump 35 and body 40.Barrier film 60 is made by elastic material such as rubber, therefore causes barrier film 60 to rotate along with the rotation of lid 50 when being fixed on the body 40 when it, and this will cause the wearing and tearing or the setup error of barrier film 60.
As mentioned above, twist lock 70 be placed in cover 50 and barrier film 60 between, and in order to avoid the above-mentioned rotation of not expecting of barrier film 60.Shown in Fig. 2 and 3, twist lock 70 is made by the annular resin dish, and it has four and is formed on otch 71 on its excircle with equal intervals.Be formed with leakage check path 72 in the twist lock 70, sealing checks that path 72 radially extends through the thickness of this twist lock 70, thereby otch 71 is communicated with the inside (being air chamber 57) of twist lock 70.Twist lock 70 can be made by metal or diaphragm.
Each otch 71 has a circumferential length, and this circumferential length is a bit larger tham projection 45 circumferential length, wherein should projection 45 be formed on or the upper surface attached to the heavy wall 42 of body 40 on.As shown in Figure 3, by each otch 71 is coupled on one of them projection 45 of body 40, twist lock 70 can be installed on the barrier film 60.When lid 50 is twisted when being connected on the body 40, the upper surface abut of the downside of second planomural 50 and twist lock 70, thus cause twist lock 70 to rotate.Yet,, twist lock 70 is connected on the heavy wall 42 of body 40, thereby control twist lock 70 does not rotate with the rotation of lid 50 by otch 71 engagements of projection 45 with twist lock 70.This has also suppressed the rotation of barrier film 60.
Be inserted in cover 50 and barrier film 60 between twist lock 70 play the effect that between the upper surface of the internal surface of lid 50 second planomural 53 and twist lock 70, produces relatively low degree sealing.Usually, the adhesive application that intensity is low slightly is in the screw thread 43 of body 40 and cover combination between 50 the screw thread 56, and this also can cause the sealing of relatively low degree.
If between the projection 61 of the groove 44 of the body 40 that needs most sealing and barrier film 60, leak, as mentioned above, result between the upper surface of the internal surface that covers 50 second planomural 54 and twist lock 70 and the screw thread 43 of body 40 and the sealing of covering between 50 the screw thread 56 are just had an effect, to stop air leakage, so just cause difficulty aspect the leakage between monitoring and inspection groove 44 and projection 61.Certainly, sealed fully, then do not had what problem as between the upper surface of the internal surface of second planomural 54 of operculum 50 and the twist lock 70 and screw thread 43 of body 40 and the gap covered between 50 the screw thread 56.Yet, very possiblely be, diaphragm pump 35 in being installed in automobile after, reduce owing to its mechanical vibration cause this sealing effect.Therefore, the sealing between the projection 61 of the groove 44 of inspection body 40 and barrier film 60 is very important.
When between the upper surface of the internal surface of lid 50 second planomural 54 and twist lock 70 and the screw thread 43 of body 40 and when covering gap between 50 the screw thread 56 and being sealed fully, leakage check path 72 is used to check the airtight seal degree between the projection 61 of the groove 44 of body 40 and barrier film 60.Specifically, as mentioned above, leakage check path 72 is formed with holes, and these holes are radially extended and opened wide on the inner circumference of twist lock 70 from the inwall of otch 71, thus set up with air chamber 57 between be communicated with, as illustrated in fig. 1 and 2.Therefore, can by air pressurized is added in the pump chamber 46 and monitoring from leakage check path 72 to air chamber 57 air leakage, with the airtight seal degree between the projection 61 of the groove 44 of checking body 40 and barrier film 60.
Shown in Fig. 6 and 7, replacedly, can form leakage check path 72 by groove, this groove is formed in the upper surface of twist lock 70 and at the inner circumference that radially extends to twist lock 70 in the radial direction from the inwall of otch 71 of twist lock 70.This structure is processed easily than the structure shown in Fig. 1 and 2.Also be easy to obtain the degree of depth that desired sealing is checked path 72, can avoid the obstruction in leakage check path 72 when lid 50 is screwed into the on the body 40.
In a single day shown in Figure 4 and 5, the whole projection 58 that forms four wedge shapes on the upper surface of lid 50 second planomural 54 is used to make and cover 50 and more easily be fixed on body 40, and covers 50 and be fixed on the body 40, make to cover 50 and be difficult to disassemble.
Specifically, each projection 58 has vertical wall 58a and inclined-plane 58b.Vertical wall 58a (is clockwise direction, is positioned at as shown in Figure 4) projection 58 front end, and inclined-plane 58b (i.e. left side, shown in Figure 4 and 5) inclination along clockwise direction on lid 50 directions that are fixed on the body 40.Inclined-plane 58b is curved, shown in plan view.In Fig. 5, " A " indication vertical wall 58a, " B " indicates inclined-plane 58b.
By utilize operator's finger along clockwise direction (shown in the arrow among the figure) thus the some or all of vertical wall 58a that promote projection 58 make and covers 50 rotations, can be fixed on the body 40 covering 50.Replacedly, also can be this fixing by using fastened tools 80 to carry out, shown in Figure 13 and 14.
Fastened tools 80 is made up of cross body 80a, a plurality of fin 80c and cross lever 80b, wherein cross body 80a is made by metallic rod, fin 80c extends from the lower vertical of the bar of body 80a ground, and cross lever 80c is installed on the core of upper surface of body 80a.By vertical wall 58a adjacency, and be rotated in a clockwise direction lever 80b, can realize to cover 50 and be fixed on the body 40 to apply torsion moment on the vertical wall 58a with fin 80c and projection 58.
Inclined-plane 58b by geometry principle design projection 58, so that be difficult to promote in the counterclockwise direction projection 58, in other words, the moment of torsion that is difficult to will be applied in the counterclockwise direction on the projection 58 discharges, and disassembles unintentionally from body 40 thereby avoided covering 50.
Fig. 8 and 9 illustrates and covers 50 improvement structure, and it designed to be able to and makes this lid 50 be removed from body 40, thereby with diaphragm pump 35 dismountings.Each projection 58 has two slits 59 that are formed on the inclined-plane 58b, and these two slits 59 extend on the circumferential direction of second planomural 54, and in order to allow special tool(s) cooperation or engagement within it.Cover 50 by special tool(s) is cooperated and rotates this special tool(s) in the counterclockwise direction with the slit 59 of projection 58 to loosen, lid 50 can be disassembled.Replacedly, each projection 58 can have the hole that is formed in the inclined-plane 58b, rather than slit 59.
Figure 15 and 16 illustrates the example in order to the special tool(s) that loosens the lid 50 shown in Fig. 8 and 9.Loosening instrument 81 is made up of cross body 81a, a plurality of fin 81c and cross lever 81b, wherein cross body 81b is made by metallic rod, fin 81c extends from the lower vertical ground of the bar of body 81a, and cross lever 81c is installed in the core of the upper surface of body 81a.By fin 81c is cooperated with slit 59 in being formed on projection 58 inclined-plane 58b, and rotate lever 81b in the counterclockwise direction and cover 50 to loosen, can disassemble from body 40 covering 50 with the inside that applies torsion moment to vertical wall 58a.
Figure 10 and 11 illustrates improved lid 50, and this lid 50 has four wedge shape projectioies 58 that are formed on its excircle.Specifically, projection 58 is formed at interval with equal angles and covers on 50 the outer circle wall 55.
Shown in Figure 4 and 5, each projection 58 has vertical wall 58a and inclined-plane 58b.Vertical wall 58a (is clockwise direction, is positioned at as shown in figure 10) projection 58 front end, and inclined-plane 58b tilt along clockwise direction (that is, the left side is shown in Figure 10 and 11) on lid 50 directions that are fixed on the body 40.In Figure 11, " A " indication vertical wall 58a, " B " indicates inclined-plane 58b.
By utilize operator's finger along clockwise direction (shown in the arrow among the figure) thus the some or all of vertical wall 58a that promote projection 58 make and covers 50 rotations, can be fixed on the body 40 covering 50.Replacedly, also can be this fixing by using improved fastened tools 80 to carry out, shown in Figure 13 and 14, the distance between two radially relative fin 80c of the fastened tools 80 after wherein improving is greater than the distance in Figure 13 and 14.
Figure 12 illustrates the improved form of the projection 58 shown in Figure 10 and 11, and it be with so that covering 50 can disassemble from body 40, thereby with diaphragm pump 35 dismountings.Each projection 58 has two slits 59 that are formed among the inclined-plane 58b, and these two slits 59 extend on the circumferential direction of outer circle wall 55, and in order to allow special tool(s) cooperation or engagement within it.By special tool(s) is cooperated with projection 58 slit 59, and rotate this special tool(s) in the counterclockwise direction and cover 50, can disassemble covering 50 to loosen.Replacedly, each projection 58 has the hole that is formed among the inclined-plane 58b, rather than slit 59.Shown in Figure 15 and 16, can realize this special tool(s) by improved instrument 81, wherein the end of fin 81c is bent inwardly into the right angle, thereby it can cooperate with slit 59.
Although, disclosed the present invention by preferred embodiment in order to understand the present invention better, easy to understand, under the situation that does not depart from principle of the present invention, the present invention can be by various implementations.Therefore, the present invention should be understood to include the institute among the shown embodiment that can implement and might improve and modification under the situation that does not depart from the principle of the present invention that appended claims provide.For example, replacedly, diaphragm pump 35 can be used as general service pump, rather than is used for diesel-oil filter.
Claims (6)
1. diaphragm pump comprises:
Body, it limits an outer pump case, and described body has an opening end;
Barrier film, it is installed on the described body, sealing this opening end, thereby limits a pump chamber in described body;
The lid, it is tightened on the described body so that with described diaphragm clip between described lid and described body, thereby in described lid, limit an air chamber;
But manual functional unit, it is used so that described barrier film resiliently deformable;
Fluid input and outlet pathway, it leads to this pump chamber;
Valve system, it is in order to set up selectively and to block connection between pump chamber and described fluid input path and pump chamber and the described fluid output path;
Spring, but it is in order to promote described manually functional unit, so that barrier film is out of shape on the lasting direction that increases of the volume of pump chamber; And
Twist lock, it is placed in the gap that the described body that keeps described barrier film and described lid form, and when described lid was screwed into the on the described body, described twist lock was in order to stop described barrier film rotating relative to rotation along with described body and described barrier film.
2. diaphragm pump as claimed in claim 1 is characterized in that described twist lock has the leak test path.
3. diaphragm pump as claimed in claim 2 is characterized in that, described leak test path is formed with holes, and described hole extends through described twist lock, thereby with the inside and outside connection of described twist lock.
4. as any one described diaphragm pump in the claim 1 to 3, it is characterized in that, described lid has formation vertical wall and inclined-plane on its outer surface, this vertical wall is from the outer surface vertical extent of described lid, be fastened to the moment of torsion of the direction on the described body so that allow reception along described lid, the geometrical shape on this inclined-plane is constructed to along described lid is discharged from the directive effect moment of torsion thereon that described body loosens.
5. diaphragm pump as claimed in claim 4 is characterized in that described inclined-plane is formed with groove or hole within it, and wherein an instrument cooperates with this groove or hole, so that described lid is loosened from described body.
6. as any one described diaphragm pump in the claim 1 to 5, it is characterized in that described diaphragm pump is used for diesel-oil filter.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP336725/2003 | 2003-09-29 | ||
| JP2003336725A JP4226427B2 (en) | 2003-09-29 | 2003-09-29 | Diaphragm pump device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1603605A true CN1603605A (en) | 2005-04-06 |
| CN100510378C CN100510378C (en) | 2009-07-08 |
Family
ID=34532738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100831961A Expired - Fee Related CN100510378C (en) | 2003-09-29 | 2004-09-29 | Diaphragm pump structure for improving assembling reliability |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP4226427B2 (en) |
| CN (1) | CN100510378C (en) |
| DE (1) | DE102004047011A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100465440C (en) * | 2005-11-24 | 2009-03-04 | 株式会社丰田自动织机 | Diaphragm pump |
| CN103573508A (en) * | 2012-07-30 | 2014-02-12 | 本田技研工业株式会社 | Fuel supply device for internal combustion engine |
| CN107882668A (en) * | 2017-12-28 | 2018-04-06 | 潍柴动力股份有限公司 | A kind of fuel filter seat |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5201004B2 (en) * | 2008-03-07 | 2013-06-05 | スズキ株式会社 | Plating method |
| KR102239498B1 (en) * | 2014-12-29 | 2021-04-14 | 만 운트 훔멜 게엠베하 | Hand pump for fuel filter |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4334838A (en) * | 1980-01-29 | 1982-06-15 | The Coca-Cola Company | Diaphragm type fluid pump having a flexible diaphragm with an internal reinforcing plate |
| JPS59190462A (en) * | 1983-04-12 | 1984-10-29 | Nippon Denso Co Ltd | Fuel heating type fuel filter |
| US4500425A (en) * | 1984-06-13 | 1985-02-19 | Allied Corporation | Pump valve for liquid separator |
-
2003
- 2003-09-29 JP JP2003336725A patent/JP4226427B2/en not_active Expired - Fee Related
-
2004
- 2004-09-28 DE DE102004047011A patent/DE102004047011A1/en not_active Withdrawn
- 2004-09-29 CN CNB2004100831961A patent/CN100510378C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100465440C (en) * | 2005-11-24 | 2009-03-04 | 株式会社丰田自动织机 | Diaphragm pump |
| CN103573508A (en) * | 2012-07-30 | 2014-02-12 | 本田技研工业株式会社 | Fuel supply device for internal combustion engine |
| CN103573508B (en) * | 2012-07-30 | 2015-12-02 | 本田技研工业株式会社 | The fuel supplying device of internal-combustion engine |
| CN107882668A (en) * | 2017-12-28 | 2018-04-06 | 潍柴动力股份有限公司 | A kind of fuel filter seat |
| CN107882668B (en) * | 2017-12-28 | 2023-12-19 | 潍柴动力股份有限公司 | Fuel filter seat |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100510378C (en) | 2009-07-08 |
| JP2005105850A (en) | 2005-04-21 |
| DE102004047011A1 (en) | 2005-06-02 |
| JP4226427B2 (en) | 2009-02-18 |
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