CN109707616A - The manufacturing method of reciprocating piston pump and piston seal - Google Patents
The manufacturing method of reciprocating piston pump and piston seal Download PDFInfo
- Publication number
- CN109707616A CN109707616A CN201811245498.2A CN201811245498A CN109707616A CN 109707616 A CN109707616 A CN 109707616A CN 201811245498 A CN201811245498 A CN 201811245498A CN 109707616 A CN109707616 A CN 109707616A
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- inserting part
- inner circumferential
- suction valve
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 238000007789 sealing Methods 0.000 claims abstract description 92
- 230000002093 peripheral effect Effects 0.000 claims abstract description 45
- 229920005989 resin Polymers 0.000 claims description 7
- 239000011347 resin Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 25
- 238000000034 method Methods 0.000 description 16
- 239000007788 liquid Substances 0.000 description 15
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 description 4
- 239000003921 oil Substances 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 238000005476 soldering Methods 0.000 description 3
- 239000004696 Poly ether ether ketone Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 229920002530 polyetherether ketone Polymers 0.000 description 2
- -1 polytetrafluoroethylene Polymers 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000004705 High-molecular-weight polyethylene Substances 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000002687 intercalation Effects 0.000 description 1
- 238000009830 intercalation Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
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- Details Of Reciprocating Pumps (AREA)
- Reciprocating Pumps (AREA)
- Compressor (AREA)
Abstract
The present invention relates to the manufacturing methods of reciprocating piston pump and piston seal.Reciprocating piston pump (100) includes the piston seal (21) for being provided with the sealing (21a) of the suction valve seat (21p) for being embedded into piston rod (7) and the peripheral side for being set to suction valve seat (21p).Piston seal (21) is included in outside and is embedded with the sealing inserting part (21f) of sealing (21a), is embedded with the plate inserting part (21g) of plate (21c) on the outside and is continuously set to the anti-delinking part (21h) for extending after plate inserting part (21g) and to radial outside and abutting with plate (21c).
Description
Technical field
The present invention relates to the manufactures of reciprocating piston pump (piston pump) and piston seal (piston packing)
Method.
Background technique
All the time, as list stream (uniflow) the formula piston pump of reciprocating piston pump (also referred to as pressure valve type piston
Pump) it is described in following patent document 1.In the single current piston pump, in cylindric cylinder tube (cylinder pipe)
Inside it is accommodated with the piston rod moved back and forth in front-rear direction.In the front end side of piston rod, it is fixed with before and after having multiple connections
The disk-shaped brake component (stopper) of through-hole.At the front end side than piston rod more posteriorly side, it is fixed with disk-shaped water suction
Valve.In the peripheral side of substantially cylindric suction valve seat, substantially cylindric portion sealing (packing) of setting is slideably supported
It is connected to cylinder tube inner peripheral surface.Suction valve seat is embedded into piston rod clearance is arranged between brake component and suction valve.In addition, herein
Suction valve seat and the component for sealing integrally are known as piston seal.
Then, in the water suction process that piston rod rearward moves, than brake component through-hole outer peripheral side part with
The front of suction valve seat abuts, and suction valve seat and suction valve separate.The flow path in cylinder tube becomes and opens as a result, uses liquid
Pump chamber flowing forwards.On the other hand, in the discharge process that piston rod moves forwards, brake component is before suction valve seat
Portion is left, and suction valve seat is abutted with suction valve.The flow path in cylinder tube becomes and closes as a result, and pump chamber is pressurized using liquid.
Then, the discharge valve being connected with pump chamber, which becomes, to be opened, and is spued using liquid.
Herein, as the manufacturing method of piston seal, it is known to for example engage stainless steel by the heating in mold
Suction valve seat and sealing method and method that sealing is embedded into the groove portion for being set to suction valve seat etc. (referring to specially
Sharp document 1).In general, as in patent document 2,3 record as, mostly use suction valve seat (in patent document 2 for
Piston bucket (piston barrel) (is in patent document 2 in patent document 3 washer for the embedding sealing portion bushing (hub))
It (gasket), is in patent document 3 the assemble method of sealing ring (seal ring)).
Patent document 1: Japanese Unexamined Patent Publication 11-50970 bulletin
Patent document 2: Japanese Unexamined Patent Application 53-2701 bulletin
Patent document 3: Japanese Unexamined Patent Publication 61-81585 bulletin
However, making sealing deform and be pressed into, so that sealing is not simply under the either case of above patent document
It falls off.Accordingly, there exist may cause sealing breakage and be difficult to the problems such as assembling.
Summary of the invention
The present invention completes to solve such technical problem, illustrates that sealing is not made to deform and can easily assemble
Reciprocating piston pump and piston seal manufacturing method.
Reciprocating piston pump (100) of the invention characterized by comprising in the cylinder that front side is connected to pump chamber (10)
Manage the piston rod (7) moved back and forth in (3)；Piston seal (21) is embedded into piston rod (7) and energy with having setting clearance
It reaches the suction valve seat (21p) moved in the axial direction and is set to the peripheral side of suction valve seat (21p) and slideably supports
It is connected to the sealing (21a) of the inner peripheral surface of cylinder tube (3)；Suction valve (20) is fixed on piston rod (7), can be located at abutting and live
On rear side of the axis direction of plug seal；With brake component (22), piston rod (7) are fixed on, piston seal can be located at abutting
(21) on front side of axis direction, and having the through-hole (22a) of connection front and back, suction valve seat (21p) includes: inner circumferential canister portion (21b),
Form inner circumferential side；With plate (21c), in a manner of being connected to the peripheral side of inner circumferential canister portion (21b) and the rear end face of sealing (21a)
Configuration, the expanding face that can be abutted with suction valve (20) and have rear side expanding from the axis direction midway of inner circumferential surface
(21k), inner circumferential canister portion (21b) include: in axis direction front end and sealing (21a) prominent outward to diameter abutted it is convex
Edge (21d)；Sealing inserting part (21f) is continuously set to after flange part (21d) and is embedded with sealing on the outside
(21a)；Plate inserting part (21g) is continuously set to after sealing inserting part (21f), and outer peripheral surface is set as via scale (21j)
Path is embedded with plate (21c) on the outside；With anti-delinking part (21h), continuously it is set to after plate inserting part (21g) and outside to diameter
Side extends, in a manner of the plate (21c) to be embedded into plate inserting part (21g) the does not fall off rearward and expanding face (21k) of plate (21c)
It abuts.
In such reciprocating piston pump (100), suction valve seat (21p) includes inner circumferential canister portion (21b) and plate (21c).
Inner circumferential canister portion (21b) has flange part (21d), for the sealing intercalation of embedding sealing portion (21a) on the outside from front end side
Portion (21f), outer peripheral surface are set as path and the plate inserting part for insert plate (21c) on the outside via scale (21j)
(21g).Therefore, sealing (21a) can be embedded into the outside of the sealing inserting part (21f) of inner circumferential canister portion (21b), it can
The front end side of sealing (21a) and the flange part (21d) of inner circumferential canister portion (21b) are knocked, plate (21c) can be embedded into inner circumferential
The outside of the plate inserting part (21g) of canister portion (21b), can be such that plate (21c) knocks with scale (21j) and sealing (21a), can
It is continuous to be arranged in such a way that the plate (21c) for being embedded into plate inserting part (21g) does not fall off rearward after plate inserting part (21g)
It is connected to the anti-delinking part (21h) in the expanding face (21k) of the plate (21c).That is, being sequentially inserted into sealing relative to inner circumferential canister portion (21b)
Portion (21a), plate (21c), finally, piston seal (21) can be obtained by the way that anti-delinking part (21h) continuously is arranged.It is reciprocal as a result,
Formula piston pump (100) can not make sealing (21a) to deform and easily assemble.
Herein, anti-delinking part (21h) can also be and being riveted to the extension (21i) at the rear of plate inserting part (21g)
It is set.In the case, the anti-delinking part being made up of different parts continuously is set to plate inserting part compared to such as soldering etc.
The rear end of (21g) is able to easily form anti-delinking part (21h).
Additionally, it is preferred that plate (21c) is made of resin.In the case, by being set as outer peripheral surface and cylinder tube in plate (21c)
(3) with the structure of preset minim gap between inner peripheral surface, even if being slideably connected to the inner circumferential of cylinder tube (3)
How much the sealing (21a) in face wears, and is located at the rear side of sealing (21a) and has minim gap between cylinder tube (3)
Plate (21c) the also inner faces contact with cylinder tube (3).Since plate (21c) is made of resin, even if plate (21c) and cylinder
(3) contact is managed, will not cylinder tube (3) be caused with the abrasion for damaging and being able to suppress sealing (21a).Then, plate (21c) energy
Enough play the role of sealing (21a) support (backup) or it is reciprocal when radial guidance.
Alternatively, it is also possible to be plate (21c) rear portion side inner peripheral be set as it is expanding with cone cell with travelling rearwardly
Expanding face (21k), the knot that anti-delinking part (21h) is continuously set to the rear end of plate inserting part (21g) and abuts with expanding face (21k)
Structure.In the case, tight when reciprocating piston pump (100) can reduce the contact relative to suction valve (20) of plate (21c)
Veneer product (circular area) can prevent the movement of the suction valve (20) caused by being bonded bad (extraordinary noise, vibration production
It is raw).
In addition, the manufacturing method of the piston seal (21) of reciprocating piston pump (100) of the invention, which is characterized in that
Sealing (21a) is embedded into the outside of the sealing inserting part (21f) of inner circumferential canister portion (21b), makes the front end of sealing (21a)
Side and the flange part (21d) of inner circumferential canister portion (21b) knock, and plate (21c) is embedded into the plate inserting part of inner circumferential canister portion (21b)
The outside of (21g) is knocked with scale (21j) and sealing (21a), by will rearward prolong as it is from plate inserting part (21g)
The extension (21i) stretched rivets in a manner of being abutted by the expanding face (21k) with plate (21c), to form anti-delinking part (21h).
According to the manufacturing method of such piston seal (21), sealing is sequentially inserted into relative to inner circumferential canister portion (21b)
(21a), plate (21c), finally, riveting extension (21i) to form anti-delinking part (21h), so as to obtain piston seal
(21).Therefore, according to the manufacturing method of such piston seal (21), can not make sealing (21a) deform and easily
It is assembled.
In this way, in accordance with the invention it is possible to provide can not make sealing deform and the reciprocating piston pump that easily assembles and
The manufacturing method of piston seal.
Detailed description of the invention
Fig. 1 is the longitudinal section for indicating reciprocating piston pump involved in embodiment.
Fig. 2 is the longitudinal section for indicating the piston seal in Fig. 1.
Fig. 3 is the exploded perspective view of the piston seal of Fig. 2.
The explanation of symbol
3 ... cylinder tubes, 7 ... piston rods, 10 ... pump chambers, 20 ... suction valves, 21 ... piston seals, 21a ... sealing,
21b ... inner circumferential canister portion, 21c ... plate, 21d ... flange part, 21f ... sealing inserting part, 21g ... plate inserting part, 21h ... anticreep
Portion, 21i ... extension, 21j ... scale, the expanding face 21k ..., 21p ... suction valve seat, 22 ... brake components, 22a ... through-hole, 100 ...
Reciprocating piston pump.
Specific embodiment
In the following, illustrating the embodiment of reciprocating piston pump according to the present invention referring to attached drawing.Fig. 1 is to indicate to implement
The longitudinal section of reciprocating piston pump involved in mode.Fig. 2 is the longitudinal section for indicating the piston seal in Fig. 1.Fig. 3 is
The exploded perspective view of the piston seal of Fig. 2.The reciprocating piston pump of present embodiment is for example for equipment such as motor atomizers.
The reciprocating piston pump of present embodiment is for example also referred to as single current piston pump or forces valve type piston pump.In addition, conduct
Liquid is used used in the reciprocating piston pump, various liquid can be used depending on the application, such as sometimes also using containing fine sand
The water channel water or high-temperature water of equal impurity.
As shown in Figure 1, reciprocating piston pump 100 from diagram right side substantially have to the left crankcase 1, water suction side manifold 2,
Cylinder tube 3, exhaust end manifold 4.Crankcase 1, water suction side manifold 2, cylinder tube 3 and exhaust end manifold 4 link in the order.?
The inside of crankcase 1 is configured with crankshaft 5, connecting rod 6.Piston rod 7 is configured at the inside that cylinder tube 3 is spread from crankcase 1.Piston
Bar 7 links via connecting rod 6 with crankshaft 5.Then, using the power from the external input such as engine or motor,
Rotation driving crankshaft 5, via connecting rod 6, piston rod 7 moves back and forth in cylinder tube 3.
In addition, indicating that part more upper than center line C makes piston rod 7 advance in the rotation using crankshaft 5 in Fig. 1
Discharge process in be located at top dead-centre state.Indicate that side section is in the rotation using crankshaft 5 more on the lower than center line C in Fig. 1
Then it is located at the state of bottom dead centre in the water suction process for retreating piston rod 7.
Lubricating oil is filled in crankcase 1.It is provided in the position that piston rod 7 passes through and is slideably connected to the piston
The oil sealing (oil seal) 8 that bar 7 and the lubricating oil being used to prevent in crankcase 1 are revealed to water suction 2 side of side manifold.In addition, inhaling
It is provided in water side manifold 2 and is slideably connected to piston rod 7 and for preventing the use liquid of water suction 2 side of side manifold to oil sealing 8
The sealing element 9 of side leakage.In addition, being provided in water suction side manifold 2 for internally sucking the water sucking mouth 15 using liquid.
In cylinder tube 3, it is provided with the 11 (details of water suction valve system moved back and forth together in axis direction with piston rod 7
It is described below).Valve system 11 absorb water while flow path of the opening and closing to the pump chamber 10 formed in the front end side of cylinder tube 3, benefit
Pump chamber 10 pressurize/depressurize with pumping action.
In addition, in the front end of pump chamber 10, being provided with the pump using water suction valve system 11 in exhaust end manifold 4
Pressurization/decompression of the pump chamber 10 of effect and be opened and closed flow path, liquid will be used to spue to outdoor discharge in pump chamber 10 and opening
Valve 12.In addition, exhaust end manifold 4 is provided with the pressure regulator valve 13 of the pressure using liquid of Adjust and use pumping action discharge, and
It is provided with the air chamber 14 for the pulsation using liquid that buffering is spued using pumping action.
Water suction valve system 11 includes the suction valve 20 as main body, piston seal 21 and brake component 22 as shown in Figure 1,
Piston seal 21 as shown in FIG. 1 to 3 include slideably be connected to cylinder tube 3 inner peripheral surface sealing 21a and can
The suction valve seat 21p abutted with suction valve 20.The state configuration that brake component 22 is separated with suction valve 20 via washer 23.It inhales
Water valve 20 is the plectane penetrated through by piston rod 7.Brake component 22 is the plectane penetrated through by piston rod 7.In brake component 22, circumferentially divide
It is installed with multiple through-hole 22a for penetrating through and being connected in the longitudinal direction front and back.
Then, in piston rod 7, from the base end side (diagram right side) of piston rod 7, suction valve 20, washer 23, brake component 22 are pressed
The sequence is embedded in.External screw thread relative to the front end for being formed in piston rod 7 installs nut 25, tightens nut 25, thus suction valve
20 knock with the order difference part 7b of the major diameter for being formed in piston rod 7.These components 20,22,23 are clamped as a result, and are fixed on scale
Between portion 7b and nut 25.
As shown in Fig. 2, piston seal 21 is configured to substantially cylindric.Piston seal 21 includes sealing 21a and suction
Water valve seat 21p.Suction valve seat 21p includes the inner circumferential canister portion 21b and cricoid plate (plate) 21c to form inner circumferential side.Plate 21c with
The mode of the peripheral side and the rear end face of sealing 21a that are connected to inner circumferential canister portion 21b configures, and can abut and have with suction valve 20
There is the expanding face 21k that rear side is expanding from the axis direction midway of inner circumferential surface.Suction valve seat 21p is embedded into the outside of washer 23
(referring to Fig.1).
Sealing 21a for example (such as is put into the polytetrafluoroethylene (PTFE), PEEK, superelevation point of filler by elastomer or resin
Sub- weight northylen etc.) it constitutes.As shown in Figures 2 and 3, sealing 21a is in the ring-type with substantially rectangular cross-section.Sealing 21a
The inner peripheral surface of front end side be recessed outward, be set as the recessed face that following flange part 21d with inner circumferential canister portion 21b are abutted
21e.The outer peripheral surface of the first half of sealing 21a becomes front end as vertex and with rearward advancing and the gradually cone of undergauge
Shape face.In addition, the front end 21m of the outer peripheral surface of sealing 21a becomes the sliding of the inner peripheral surface for being slideably connected to cylinder tube 3
Portion.In addition, the outer peripheral edge portion in the rear end of sealing 21a, is provided with to axis direction front side with annular shape and inside is recessed
And the recess 21n of the front surface of the peripheral side towards plate 21c.
Plate 21c is in substantially cylindric.Plate 21c for example (such as is put into the polytetrafluoroethylene (PTFE) of filler, PEEK, super by resin
High molecular weight polyethylene etc.) it constitutes.The inner peripheral of the rear portion side of plate 21c is set as with travelling rearwardly and the expansion expanding with cone cell
Diametric plane 21k.In addition, being provided with predetermined minim gap between the outer peripheral surface of plate 21c and the inner peripheral surface of cylinder tube 3.This
Place, as particularly preferably, minim gap is set to 0.05mm~0.1mm or so.
Inner circumferential canister portion 21b is in substantially cylindric with ladder.Inner circumferential canister portion 21b is made of such as stainless steel etc..Such as Fig. 2 institute
Show, inner circumferential canister portion 21b from front end side rear end side, successively have flange part 21d, sealing inserting part 21f, plate inserting part 21g,
Anti-delinking part 21h.Flange part 21d is prominent outward to diameter with annular shape in cylindric front end.
The sealing inserting part 21f being continuously set to after flange part 21d is the portion for being embedded with sealing 21a on the outside
Point.The size that the outer diameter of sealing inserting part 21f is inserted into as the ID distortion for not making sealing 21a.
Plate inserting part 21g is continuously set to after sealing inserting part 21f, and outer peripheral surface is set as comparing via scale 21j
Sealing inserting part 21f path.Plate inserting part 21g is the part for being embedded with plate 21c on the outside.
It is set to the anti-delinking part 21h after plate inserting part 21g continuously to be embedded into the plate 21c of plate inserting part 21g not backward
The mode just to fall off is connected to the expanding face 21k of plate 21c.Herein, as described above, the inner peripheral of the rear portion side of plate 21c is set
For with travelling rearwardly and the expanding face 21k expanding with cone cell.Anti-delinking part 21h is set as and the expanding face 21k cone cell abutted
Expanding shape.Further, since being the structure that is abutted with suction valve 20 of rear end face of plate 21c, therefore anti-delinking part 21h is unlike plate
The mode that the rear end face of 21c more rearward exposes is constituted.
Then, referring to Fig. 3, illustrate the manufacturing method of piston seal 21.Firstly, sealing 21a is embedded into inner circumferential cylinder
The outside of the sealing inserting part 21f of portion 21b becomes the recessed face 21e and inner circumferential canister portion 21b of the front end side of sealing 21a
Flange part 21d knock, plate 21c is embedded into the outside of the plate inserting part 21g of inner circumferential canister portion 21b, makes plate 21c and scale 21j
Knocked with sealing 21a, finally, by from extension 21i that plate inserting part 21g rearward extends as it is (referring to the void in Fig. 2
Line) abutted by the expanding face 21k with plate 21c in a manner of rivet.Anti-delinking part 21h is formed as a result,.
In this way, the manufacturing method of piston seal 21 according to the present embodiment is successively inserted relative to inner circumferential canister portion 21b
Enter sealing 21a, plate 21c, finally, extension 21i is riveted and forms anti-delinking part 21h.As a result, according to the piston seal 21
Manufacturing method, can not make sealing 21a deform and easily assemble.
Then, in the reciprocating piston pump 100 with the piston seal 21 obtained in this way, as shown in Figure 1, in piston
Circular gap is formed between the inner peripheral surface of inner circumferential canister portion 21b (referring to Fig. 2) and the outer peripheral surface of washer 23 of sealing element 21
C1.Piston seal 21 is embedded in clearance is arranged between suction valve 20 and brake component 22, can be mobile in axis direction.
In the water suction valve system 11 having a structure in which, sealing 21a is slideably connected to the inner circumferential of cylinder tube 3
Face.Between the outer peripheral surface of plate 21c and the inner peripheral surface of cylinder tube 3, it is provided with above-mentioned minim gap.In addition, brake component 22
The rear end face of peripheral part is in the positional relationship opposite with the front surface of flange part 21d of inner circumferential canister portion 21b.Then, such as Fig. 1
Than center line C more on the lower shown in side section, when the front surface of the rear end face and piston seal 21 of the peripheral part of brake component 22 is supported
When connecing, clearance C 2 is formed with annular shape between suction valve 20 and the rear surface of piston seal 21 (plate 21c).
In such reciprocating piston pump 100, crankshaft 5 is driven by rotation, piston rod 7 is back and forth transported in cylinder tube 3
It is dynamic.As a result, reciprocating piston pump 100 repeat from top dead-centre to the mobile water suction process of bottom dead centre (referring to Fig.1 than center line C
Upper part) and discharge process (than the center line C more on the lower side referring to Fig.1 mobile to top dead-centre from bottom dead centre
Point).Herein, when being switched to water suction process from discharge process, if Fig. 1 is than shown in center line C side section more on the lower, piston rod
7 is mobile to axis direction rear.Suction valve 20 leaves piston seal 21 (accurate for be plate 21c) as a result, brake component 22 with
Piston seal 21 (being flange part 21d for accurate) abuts.Between being generated between suction valve 20 and piston seal 21 as a result,
Gap C2 and flow path, which become, to be opened, and clearance C 2 is connected to clearance C 1, and then through-hole 22a connection.Then, from the water suction of water suction side manifold 2
Mouthfuls 15 flow into clearance C 1 is flowed by clearance C 2 using liquid, and towards pump chamber 10.Then, piston seal 21 is in sealing
In the state that 21a is slideably abutted with the inner peripheral surface of cylinder tube 3, with same piston rod 7 together to the movement of axis direction rear
Brake component 22 is interlocked and is rearward moved.Increase volume using the using liquid of inflow in pump chamber 10 and depressurize, to become
Negative pressure.
In addition, when being transferred to discharge process from water suction process, it is living as shown in the part more upper than center line C of Fig. 1
Stopper rod 7 is mobile to axis direction front.Brake component 22 and piston seal 21 separate as a result, suction valve 20 and piston seal
21 abut, clearance C 2 disappear and flow path become close.Then, piston seal 21 the inner peripheral surface of sealing 21a and cylinder tube 3 can
In the state of slidably abutting, moved forwards to the mobile gearing of suction valve 20 in front of axis direction together with same piston rod 7
It is dynamic.It is mobile to axis direction front by piston rod 7, it is pressurized in pump chamber 10.Use liquid via discharge valve 12 in pump chamber 10
And it spues from the discharge opening of exhaust end manifold 4 16 to outside.
In addition, in the present embodiment, as shown in Fig. 2, by being set as the inner peripheral of the rear portion side of plate 21c with backward
Advance and the expanding face 21k expanding with cone cell, and by the extension 21i rearward extended as it is from plate inserting part 21g with
The mode that the expanding face 21k of plate 21c is abutted rivets, and forms anti-delinking part 21h.However, it is also possible to will be by not for example, by soldering etc.
It is fixed with the anti-delinking part that component is constituted and is continuously disposed in the rear end of plate inserting part 21g.In addition, making the expanding face 21k of plate 21c
It is not cone cell but with the expanding scale face in right angle (expanding face).Then, or anti-delinking part 21h is continuously set to right angle
The rear end of plate inserting part 21g, and the structure abutted with the scale face of plate 21c.In this case, it is possible to by plate inserting part 21g's
Extension 21i with right angle rivet and is abutted with the scale face of plate 21c, alternatively, it is also possible to for example, by be brazed etc. will be by different portions
The anti-delinking part that part is constituted by with the rear end of plate inserting part 21g it is at right angle in a manner of fixation and be continuously arranged.
In this way, in the present embodiment, sealing 21a can be embedded into the sealing inserting part 21f of inner circumferential canister portion 21b
Outside, the front end side of sealing 21a and the flange part 21d of inner circumferential canister portion 21b can be made to knock, plate 21c can be embedded into
The outside of the plate inserting part 21g of inner circumferential canister portion 21b, can be such that plate 21c knocks with scale 21j and sealing 21a, can be embedding in plate
After interpolating unit 21g, it is continuous be arranged in such a way that the plate 21c for being embedded into plate inserting part 21g does not fall off from rear with the expansion of plate 21c
The anti-delinking part 21h that diametric plane 21k is abutted.That is, being sequentially inserted into sealing 21a, plate 21c relative to inner circumferential canister portion 21b, finally continuously set
Anti-delinking part 21h is set, piston seal 21 can be obtained.As a result, reciprocating piston pump 100 can not make sealing 21a deform and
Easily assemble.
In addition, anti-delinking part 21h is arranged and will rivet to the extension 21i at the rear of plate inserting part 21g.Therefore, phase
Compared with the rear end that the anti-delinking part being made up of different parts continuously is set to plate inserting part 21g for example, by soldering etc., Neng Gourong
It changes places to form anti-delinking part 21h.
In addition, plate 21c is made of resin.Between the outer peripheral surface of plate 21c and the inner peripheral surface of cylinder tube 3, it is provided in advance really
Fixed minim gap.Therefore, when how much the sealing 21a slideably abutted with the inner peripheral surface of cylinder tube 3 wears, plate 21c
With the inner faces contact of cylinder tube 3.As a result, even if the plate 21c being made of resin is contacted with cylinder tube 3, it will not be to cylinder tube 3
It causes to damage and be able to suppress the abrasion of sealing 21a.In addition, plate 21c can play sealing 21a support or it is reciprocal when
The effect of radial guidance.
In addition, the inner peripheral of the rear portion side of plate 21c is set as with travelling rearwardly and the expanding face 21k expanding with cone cell,
Anti-delinking part 21h is continuously set to the rear end of plate inserting part 21g and abuts with expanding face 21k, therefore can reduce the opposite of plate 21c
Abutting area (circular area) when the contact of suction valve 20 can prevent the movement of the suction valve 20 caused by being bonded
Bad (extraordinary noise, vibration generate).
In addition, according to the present embodiment, the outer peripheral edge portion in the rear end of sealing 21a is provided with before axis direction
Side and inside recess and the front surface towards plate 21c, and flowed in cylinder tube 3 using liquid can by plate 21c with
Minim gap between the inner peripheral surface of cylinder tube 3 and the recess 21n entered (referring to Fig. 2 and Fig. 3).Utilize entrance recess 21n
Use liquid, sealing 21a is assisted in terms of cooling and lubrication from rear portion.Thereby, it is possible to make sealing 21a long lifetime
And it can be improved the durability of pump.
More than, the present invention is specifically described based on embodiments of the present invention, but the present invention is not limited to above-mentioned
Embodiment.For example, in the above-described embodiment, when absorbing water process, being set as the flange part of brake component 22 Yu suction valve seat 21p
The type that 21d is abutted.However, it is also possible to for such, brake component documented by such as Japanese Unexamined Patent Publication 2014-224469 bulletin
The type that is abutted with the front of sealing of the protruding portion at rear portion.
In addition, in the above-described embodiment, as it is special preferably, illustrate for reciprocating piston pump to be applied to power spray
The example of mist machine, but can also apply to other equipment.
Claims (5)
1. a kind of reciprocating piston pump (100), which is characterized in that
Include: piston rod (7), is moved back and forth in the cylinder tube (3) that front side is connected to pump chamber (10)；Piston seal (21),
Have the suction valve seat (21p) that is embedded into the piston rod (7) clearance is set and can move in the axial direction and sets
It is placed in the peripheral side of the suction valve seat (21p) and is slideably connected to the sealing of the inner peripheral surface of the cylinder tube (3)
(21a)；Suction valve (20) is fixed on the piston rod (7), can be located at the axis direction of the piston seal (21) with abutting
Rear side；With brake component (22), the piston rod (7) are fixed on, the axis side of the piston seal (21) can be located at abutting
To front side, and have the through-hole (22a) of connection front and back,
The suction valve seat (21p) includes:
Inner circumferential canister portion (21b) forms inner circumferential side；With
Plate (21c), in a manner of being connected to the peripheral side of the inner circumferential canister portion (21b) and the rear end face of the sealing (21a)
Configuration can be abutted with the suction valve (20) and expanding expanding halfway from the axis direction of inner circumferential surface with rear side
Face (21k),
The inner circumferential canister portion (21b) includes:
In the axis direction front end flange part (21d) that the prominent outward and sealing (21a) is abutted to diameter；
Sealing inserting part (21f) is continuously set to after the flange part (21d) and is embedded with the sealing on the outside
(21a)；
Plate inserting part (21g) is continuously set to after the sealing inserting part (21f), outer peripheral surface via scale (21j) and by
It is set as path, is embedded with the plate (21c) on the outside；With
Anti-delinking part (21h) is continuously set to after the plate inserting part (21g) and extends to radial outside, described to be embedded into
The mode that the plate (21c) of plate inserting part (21g) does not fall off rearward and the expanding face (21k) of the plate (21c) are supported
It connects.
2. reciprocating piston pump (100) as described in claim 1, which is characterized in that
The anti-delinking part (21h) is set and being riveted to the extension (21i) at the rear of the plate inserting part (21g).
3. reciprocating piston pump (100) as claimed in claim 1 or 2, which is characterized in that
The plate (21c) is made of resin.
4. the reciprocating piston pump (100) as described in any one of claims 1 to 3, which is characterized in that
The inner peripheral of the rear portion side of the plate (21c) is set as with travelling rearwardly and the expanding face (21k) expanding with cone cell,
The anti-delinking part (21h) is continuously set to the rear end of the plate inserting part (21g) and abuts with the expanding face (21k).
5. a kind of manufacturing method of piston seal (21), which is characterized in that
It is the manufacturing method of piston seal as claimed in claim 4 (21),
The sealing (21a) is embedded into the outside of the sealing inserting part (21f) of the inner circumferential canister portion (21b), and
The front end side of the sealing (21a) and the flange part (21d) of the inner circumferential canister portion (21b) are knocked,
So that the plate (21c) is embedded into the outside of the plate inserting part (21g) of the inner circumferential canister portion (21b), and with the rank
Poor (21j) and the sealing (21a) knock,
By the extension (21i) that will rearward extend as it is from the plate inserting part (21g) with the institute with the plate (21c)
The mode for stating expanding face (21k) abutting rivets, to form the anti-delinking part (21h).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017206192A JP6731389B2 (en) | 2017-10-25 | 2017-10-25 | Reciprocating piston pump and method for manufacturing piston packing |
| JP2017-206192 | 2017-10-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109707616A true CN109707616A (en) | 2019-05-03 |
| CN109707616B CN109707616B (en) | 2019-10-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811245498.2A Active CN109707616B (en) | 2017-10-25 | 2018-10-24 | The manufacturing method of reciprocating piston pump and piston seal |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6731389B2 (en) |
| CN (1) | CN109707616B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI795877B (en) * | 2020-08-21 | 2023-03-11 | 美商恩特葛瑞斯股份有限公司 | Main seal assembly and method of producing a seal |
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| DE2628985A1 (en) * | 1976-06-28 | 1977-12-29 | Speck Kolbenpumpen Fabrik | High pressure hot liq. pump piston - has wear resistant low friction guide ring on suction side of seal ring in annular piston groove |
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| US3854735A (en) * | 1972-10-24 | 1974-12-17 | Exxon Production Research Co | Static face seal |
| JPS532701A (en) * | 1976-06-28 | 1978-01-11 | Supetsuku Korubenpiyunpen Fuab | Cylinderrpiston means for hydraulic pumps |
| JPS6181585A (en) * | 1984-06-18 | 1986-04-25 | テイア−ルダブリユ− インコ−ポレ−テツド | Piston of reciprocal pump |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP6731389B2 (en) | 2020-07-29 |
| JP2019078225A (en) | 2019-05-23 |
| CN109707616B (en) | 2019-10-29 |
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