CN104005948B

CN104005948B - The fluid end of high-pressure pump with the slot suitable for receiving suction valve retainer

Info

Publication number: CN104005948B
Application number: CN201410050247.4A
Authority: CN
Inventors: 阿伦·纳汗德拉·拉杰·钱德拉塞克兰; 克里斯多弗·道格拉斯·德格英格尔; 格雷戈里·大卫·哈什
Original assignee: Gardner Denver Inc
Current assignee: GD Energy Products LLC
Priority date: 2013-02-21
Filing date: 2014-02-13
Publication date: 2018-06-12
Anticipated expiration: 2034-02-13
Also published as: CA2841493A1; MX354937B; MX2014001654A; CN104005948A; CA2841493C

Abstract

A kind of fluid end of high-pressure pump has through-hole, discharge orifice, suction hole, valve cover hole and the cross bore intersection formed in the various pieces of fluid end.There is the opening for leading to cross bore intersection, wherein suction hole and discharge orifice is substantially perpendicular to through-hole each of in through-hole, discharge orifice, valve cover hole and suction hole.Slot is formed in the wall of fluid end in cross bore intersection.The slot crosses the curved path around open space.The slot has the first section and the second section, and each section has a first end and a second end.First section and the second section close to the gap of through-hole and valve cover hole by separating.Spring retainer is received in slot and is fixed in slot to be operated for pump.

Description

The fluid end of high-pressure pump with the slot suitable for receiving suction valve retainer

Technical field

This disclosure relates to the cone tank in high-pressure plunger pump；The slot receives retainer；The first part of retainer and second Part is maintained in slot；The slot is configured to prevent retainer from removing from slot along the long axis of suction hole.

Background technology

Spring retainer for the suction valve in high-pressure plunger pump is well known.Blume（Blume）United States Patent (USP) 7,186,097 disclose suction valve spring retainer.The retainer is in the plunger pump of the structure feature including being used for stress elimination It is used in housing.These pump case object constructional features accommodate the discrepancy stopple for fastening suction valve spring retainer, suction valve bullet Spring retainer is substantially centrally positioned in inside stopple on the suction hole transitional region of plunger pump shell.The stopple that comes in and goes out is adopted Suitable position in pump case is fastened on one or more threaded keeps.Since stress reduces structure feature, construct in this way Plunger pump it is opposite to fatigue rupture there is resistance, and plunger pump can include a variety of valve-type, including matching to be easy to maintain Pawl guiding valve, top guide rod valve and the lower guide rod valve put.Suction valve spring retainer in casing plunger pump may be used also Including suction valve mandril guide tool.Moreover, the certain structure features for the stopple that comes in and goes out may be sized to improve at it The volumetric efficiency of the middle pump using the structure feature.

Blume（Blume）United States Patent (USP) 6,910,871 disclose comprising the plunger pump for stress relief feature The valve guide tool and spring retainer component used in housing.These pump cases have the valve guide tool for accommodating respective shapes And/or the structure feature of spring retainer, valve guide tool and/or spring retainer are existed using one or more non-threaded gaskets Internal fix in position.

Blume（Blume）United States Patent (USP) 6,544,012 disclose the Y type block fluid cross-section plunger pump cases with cylinder holes Body, the cylinder holes is in itself and suction hole and the infall extending transversely of discharge orifice, so as to provide stress elimination and reduce case weight. Spoke ring valve spring retainer further reduced hole and intersect neighbouring stress, and allow to use top guide bar suction valve.Taper Box package member promotes to use integral plunger in Y type block housings and also allows to change in the case where not removing plunger Packaging in this housing.

Invention content

An aspect of of the present present invention is embodied by the fluid end of pump.Fluid end has what is formed in a part for fluid end to lead to Hole.The through-hole has long axis.Fluid end also has the discharge orifice formed in a part for fluid end, and discharge orifice has long axis Line.Fluid end also has the suction hole formed in a part for fluid end, and suction hole has long axis, and fluid end also has The valve cover hole formed in a part for fluid end.Valve cover hole has central axis.Central axis is extended in hole.

Cross bore intersection is formed in a part for fluid end.It is each in through-hole, discharge orifice, valve cover hole and suction hole All there is the opening for leading to cross bore intersection.What the long axis of suction hole extended through discharge orifice leads to cross bore intersection Opening.The long axis of discharge orifice extends through the opening for leading to cross bore intersection of suction hole.The axis extension of valve cover hole is logical Cross the opening for leading to cross bore intersection of through-hole.

Hole transitional region is located at the through hole for leading to cross bore intersection, and neighbouring cross bore intersection.Valve cover hole mistake It crosses area and is located at and lead at the valve cover hole of cross bore intersection, and neighbouring valve cover hole and cross bore intersection.

Slot crosses curved path around open space, and each long axis of discharge orifice and suction hole is extended in open space. The slot has the first section and the second section.First section has a first end and a second end.Second section has first end and the Two ends.There is opposite closed base, and each section has open sides each of in first section and the second section.The There is the first inclined surface and the second inclined surface each of in one section and the second section.First inclined surface in the first section Simultaneously it polymerize toward each other towards the substrate in the first section with the second inclined surface.In first inclined surface in the first section and second The angle formed between inclined surface is more than 90 ° and less than 180 °.First inclined surface and the second inclined surface in the second section Toward each other and the substrate towards the second section polymerize.The shape between first inclined surface and the second inclined surface in the second section Into angle be more than 90 ° and less than 180 °.

There is gap between the first end in the first section of slot and the first end in the second section.In the first section of slot Also there is gap between the second end in two ends and the second section.

Retainer is configured in fluid end, and the valve rod suitable for receiving suction valve.The retainer has first part, should First part has first surface and second surface.First surface is tilted relative to second surface.It is formed by the two surfaces Exterior angle is more than 180 ° and less than 270 °.Retainer has second part, and second part has first surface and second surface.First Surface is tilted relative to second surface.It is more than 180 ° and less than 270 ° by the exterior angle that the two surfaces are formed.Retainer has base Bottom, first part and second part extend from the substrate.There is the substrate valve guide hole to receive the bar of suction valve.

The first part of retainer can have the third surface being inclined outwardly relative to substrate.The third surface of first part Intersect with the axially extending surface of substrate.Axial surface extends towards based upper surface far from crosspoint.Axial surface it is upper Surface and a part are on crosspoint.

The second part of retainer can have the third surface being inclined outwardly relative to substrate.The third surface of second part Intersect with the axially extending surface of substrate.Axial surface extends towards based upper surface far from crosspoint.Axial surface it is upper Surface and a part are on crosspoint.

Another aspect of the present invention is embodied by retainer.

Description of the drawings

Fig. 1 is the isometric sectional view of plunger pump fluid end；Its middle section is is taken across the housing of plunger pump fluid end；It should Section is parallel to the long axis of the long axis of plunger hole, the long axis of suction hole and discharge orifice；Spring retainer configuration is being kept In tank, and it can be rotated around the central axis of spring retainer；The view shows spring retainer along the first circumferencial direction （Counterclockwise）Rotated, until further rotation by a part for spring retainer and a part for valve deck against And it is prevented from；For sake of simplicity, have been omitted from the component of fluid end.

Fig. 2 is the sectional view of the same cross-sectional shown in Fig. 1, unlike, Fig. 2 shows spring retainer along and first The second opposite circumferencial direction of circumferencial direction（Clockwise）Rotation, until the rotation by the part of spring retainer with Valve deck against and be prevented from.

Fig. 3 is the sectional view of the fluid end of Fig. 1；But the section is perpendicular to plunger hole and is parallel to suction hole and row Acquired by discharge hole；In addition, the component of fluid end is shown in figure, such as plunger, suction valve module and bleed valve assembly；It also illustrates Spring retainer is configured in tank is kept, and tank is kept to remain to position by valve spring is aspirated, so as to make suction in closed position Valve is biased with its valve seat.

Fig. 4 A are the isometric sectional views of fluid end shown in Fig. 1, and spring retainer and valve deck are omitted in this view；It should View shows the first section of retention groove, and the first section is prolonged between the transitional region of plunger hole and the transitional region of valve cover hole It stretches.

Fig. 4 B are the isometric sectional views of fluid end shown in Fig. 1, and spring retainer and valve deck are omitted in this view；It should View shows the second section of retention groove, and the second section is opposite with the first cross-section radial of retention groove, and in the transition of plunger hole Extend between region and the transitional region of valve cover hole.

Fig. 4 C and 4D are the details enlarged drawing of Fig. 4 A and 4B respectively；The detail drawing shows that retention groove has first surface, second Surface and rounded transitional region, wherein, first surface tilts along the first direction, and second surface edge is different from the second of first direction Direction tilts, and first surface is connected to second surface by rounded transitional region in the bases of slot；Opposite with the substrate of slot is Open sides.

Fig. 5 is the sectional view of fluid end shown in Fig. 1, wherein spring retainer and valve deck is omitted；The view shows to protect The first section and the second section of holder slot, wherein plunger hole have the first end and the second of the second section positioned at the first section Thus transitional region between end provides interruption, gap or interruption between the second section of the first section of retention groove and retention groove； The gap is between the first end in the first section and the first end in the second section.

Fig. 6 is the sectional view of fluid end shown in Fig. 5, wherein spring retainer and valve deck is omitted；The view shows to keep The first section and the second section of tank, wherein valve cover hole have the transitional region between the first section and the second section, Thus interruption, gap or interruption are provided between the second section of the first section of retention groove and retention groove；The gap is in the first section Second end and the second section second end between.

Fig. 7 A to 7H are each views of spring retainer shown in Fig. 1；Fig. 7 A are vertical views；Fig. 7 B are that the right side is regarded depending on isometric Figure；Fig. 7 C are right views；Fig. 7 D are left views；Fig. 7 E are front views；Fig. 7 F are rearviews；Fig. 7 G are bottom views；And Fig. 7 H It is left view isometric views.

Fig. 8 is the isometric sectional view of fluid end shown in Fig. 4 A, and wherein spring retainer is aligned so that retainer first It is partly arranged between the first end of the first slot cross-section and the first end of the second slot cross-section；The second part configuration of retainer is the Between the second end of one slot cross-section and the second end of the second slot cross-section；Retainer first part against plunger hole transitional region just Position；Retainer second part is in place against valve cover hole transitional region；Valve deck is not present；Retainer spring is compressed.

Fig. 9 is the isometric sectional view of section of fluid end shown in Fig. 8, and wherein spring is attached to spring retainer, and valve It is compressed；Valve is in the closed position；Spring has been rotated into installation site, and in the installation site, the long axis of retainer is vertical In plunger axially bored line.

Figure 10 is the isometric sectional view of piston pump fluid end；Its middle section is across acquired by the housing of piston pump fluid end 's；The section is parallel to the long axis of the long axis of piston hole, the long axis of suction hole and discharge orifice；Spring retainer is configured In tank is kept, and it can be rotated in tank is kept around the central axis of spring retainer；The view shows that spring is kept Device is along the second circumferencial direction（Clockwise）It is rotated, until the retainer that further rotation passes through spring retainer Section is prevented from against the protrusion of valve deck；For sake of simplicity, have been omitted from being typically found in the component in fluid end.

Figure 11 is to maintain the enlarged drawing of the first cross-sectional view of tank；The detail drawing show keep tank have first surface, Second surface and rounded transitional region, wherein, first surface tilts along the first direction, and second surface is along different from first direction Second direction tilts, and first surface is connected to second surface by rounded transitional region in the bases of slot.

Figure 12 A to 12H are each views of spring retainer shown in Figure 10；Figure 12 A are to overlook isometric views；Figure 12 B It is vertical view；Figure 12 C are front views；Figure 12 D are rearviews；Figure 12 E are left views；Figure 12 F are right views；Figure 12 G are to look up Figure；And Figure 12 H are to look up isometric views.

Figure 13 is the sectional view that 13-13 is cut along the spring retainer of Figure 12 A.

Figure 14 is the isometric sectional view of piston pump fluid end shown in Figure 10；Its middle section is across piston pump fluid end Acquired by housing；The section is parallel to the long axis of the long axis of piston hole, the long axis of suction hole and discharge orifice；Suction Valve is mounted in suction hole, and spring retainer is configured in tank is kept and can be in tank is kept around the center of spring retainer Axis rotates；The view shows that spring retainer is rotated along the first circumferencial direction, until it is fully received within holding In tank；Valve deck has been purposely omitted shown in Figure 10.

Figure 15 is the sectional view that 15-15 is cut along the fluid end of Figure 14；Figure 15 includes the row deliberately omitted in fig. 14 It puts valve module and drain valve keeps lid.

Figure 16 is the isometric sectional view of piston pump fluid end shown in Figure 14；Its middle section is across piston pump fluid end Acquired by housing；The section is parallel to the long axis of the long axis of piston hole, the long axis of suction hole and discharge orifice；Suction Valve is mounted in suction hole, and spring retainer is configured in tank is kept and can be in tank is kept around the center of spring retainer Axis rotates；The view shows spring retainer in insertion position or pre-installed position；Retainer is not yet rotated to be protected with being mounted on In holder slot.

Specific embodiment

The disclosure should be considered as the illustration to the principle of the invention, and shown tool is limited the invention to without being intended to Body embodiment.

With reference to Fig. 1,2 and 3, it is to be understood that the general operation of high-pressure pump and the function of retainer ring 20 and slot 22.It keeps Device ring can also be referred to as spring retainer 20.Plunger 24 shown in Fig. 3 along plunger hole 32 long axis 30 in a first direction 26 and opposite second direction 28 on move back and forth.The long axis extends along the length of plunger hole.In plunger 24 first When being moved back and forth on direction 26 far from valve deck 34, fluid is inhaled into suction hole 36 by fluid inlet 38.It is generally in close stance The suction valve 40 put leaves its valve seat 42 and is moved to spring retainer 20.Then fluid enters cross bore by spring retainer and hands over Prong 44.Then plunger 24 is moved back and forth in opposite 28 upper edge plunger hole long axis 30 of second direction to valve deck 34.This is reciprocal Movement causes fluid to discharge fluid end 54 by discharge orifice 46.Fluid is discharged by the way that drain valve 48 is pushed away its valve seat 50 to discharge Hole, and discharge orifice is discharged by fluid outlet 52.When plunger 24 moves back and forth, fluid is inhaled into fluid end 54, and It is sprayed from fluid end 54.Can be seen that fluid end is from the mach single single piece of single cast member or forge piece.

The power of fluid can be such that spring retainer 20 is rotated around retainer central axis 56.The central axis can also be claimed Third axis for spring retainer.But valve deck 34 prevents retainer from rotating in this way, i.e., which to keep The first end section 58a of the device first part 58 or first end section 60a of retainer second part 60 can be located at so that plunger Contact the position of any other part of these end parts or retainer.Valve deck 34 extends through valve cover hole 34a, and and valve deck Hole transitional region 78 is overlapped.Valve deck transitional region 78 second end and the second section 90 of the first slot cross-section 86 second end it Between.Valve cover hole transitional region 78 and the second end of the first slot cross-section 86 and the second end in the second section 90 are coplanar.Valve cover hole mistake It is also coplanar with slot 22 to cross region 78.Therefore, valve deck is located in the rotating path of retainer 20.The lid is provided against to prevent spring The 360 ° of rotations of retainer in the clockwise direction or in the counterclockwise direction.

The configuration of slot 22 and retainer 20 also prevents retainer 20 along the long axis 64 of suction hole 36 in a first direction on 62 It is moved towards discharge orifice 46.The configuration of slot 22 and retainer 20 also prevents retainer 20 along the long axis 68 of discharge orifice 46 second It is moved on direction 66 towards suction valve 40.It further ensures that 20 institute of end part 58a, 60a and retainer of retainer 20 There are other parts to be held at except the path of plunger 24 so that plunger 24 will not contact retainer 20 in its reciprocating motion. Therefore, the configuration of the part of the configuration of slot 22 and retainer 20 in slot 22 cooperates so that retainer 20 will not skid off slot 22. Retainer will not skid off slot 22 along the long axis 64 of suction hole on the direction of drain valve 48 62.Retainer will not be along discharge orifice Long axis 68 skids off slot on direction 66 towards suction ports valve 40.Discharge orifice long axis extends along the length of discharge orifice.Suction hole Long axis extends along the length of suction hole.

Valve cover hole, suction hole, discharge orifice and plunger hole each have opening 34b, 36a, 46a and 32a, the 34b that is open, 36a, 46a and 32a lead to cross bore intersection 44.Valve cover hole transitional region 78 is located at valve cover hole opening 34b.Plunger hole mistake Region 70 is crossed to be located at plunger hole opening 32a.Suction axially bored line 64 extends through the opening of discharge orifice opening 46a.Discharge hole axle Line 68 extends through the opening 36a of suction hole.Valve cover hole central axis 34c extends through the opening 32a in plunger hole.Plunger hole Axis 30 extends through the opening 34b of valve cover hole.

With reference to Fig. 1-3 and 8 and 9, spring retainer 20 it can be understood that the appearance in retention groove 22 can be mounted on by we Easy degree.In order to which spring retainer is placed in installation site, suction valve 40 and valve seat 42 are mounted in suction hole 36.Valve deck 34 Not yet install.Plunger 24 is not in cross bore intersection 44 or be overlapped with plunger hole transitional region 70.Spring 72 is configured It is placed on valve 40 into one end of spring is caused.Spring 72 is disposed around valve cage 74.The part of valve-supporting spring can be described as bullet Spring bearing.Spring retainer 20 is oriented to be placed in first position.First position can be described as insertion position or pre-installed position.For Spring retainer is placed in first position, makes the retainer first part 58 of spring retainer and 70 phase of plunger hole transitional region Alignment, so retainer first part 58 is Chong Die with plunger hole transitional region.By first part and plunger hole transitional region phase While alignment, second spring retainer part 60 is made to be aligned with valve cover hole transitional region 78, so second spring retainer Part 60 is Chong Die with valve cover hole transitional region.First part and plunger hole transitional region are aligned, by second part and valve While cap bore transitional region aligns, the sleeve 82 extended along central axis 56 is aligned and is inserted into the end of compressed spring 72 72b.Alternatively, sleeve can be the recessed area for receiving compressed spring second end.Retainer supports the portion of spring second end Divide and may be generally referred to as spring fastening.After spring retainer be aligned as described above, setter is along suction hole long axis 64 push away spring retainer 20 towards suction valve 40.Promotion compressed spring in the axial direction.Setter is in the axial direction towards pumping 40 mobile spring retainer 20 of valve is inhaled, until retainer first part 58 and plunger transitional region 70 and retainer second part The movement axially further against prevention spring retainer 20 between 60 and valve cover hole transitional region 78.Valve deck and plunger transition Region 70,78 can be described as Transition edges.The edge is circle.Then, setter is around the central axis rotating missile of spring retainer Spring retainer so that the leading edge of retainer first part 58 is taken to neighbouring with the opening 22a of slot.The 22a that is open is located at first The first end of slot cross-section 86.The rotation can also make the opening 22b in 88 adjacent grooves 22 of leading edge of retainer second part 60.It should Opening 22b is located at the second end of the second slot cross-section 90.In rotary course, setter keeps spring retainer 20, thus its A part 58 by plunger hole transitional region 70 against, and its second part 60 by valve cover hole transitional region 78 against.Based on transition Region 70,78 and the construction for keeping tank 22 allow retainer 20 in the axial direction close proximity to suction valve 40.Just in Jiang Bao Include first end insertion opening 22as of the first end section 58a in the first slot cross-section 86 of the retainer first part 58 of leading edge 84 Before, spring retainer 20 can be described as in alignment position.Also, just in the retainer for the leading edge 88 that will include second part 60 Before the second end insertion opening 22b in the second section 90, spring retainer 20 can claim the first end section 60a of second part 60 For in alignment position.The insertion position of alignment or alignment pre-installed position can also be known as by being directed at first position.In addition, being aligned Position, a part of the first side surface 76a of retainer first part 58 and the first surface 23a in 22 first section 86 of retention groove It axially aligns.The first surface 23a in 22 first section 86 of retention groove is inclined.In addition, the second of retainer first part 58 At least part of side surface 76b and the second surface 23b in 22 first section 86 of retention groove are axially aligned.Second surface 23b is It is inclined.First side surface 76a and the second side surface 76b is inclined.Spring retainer in alignment position is also orientated at Make a part of the first side surface 80a of 20 second part 60 of spring retainer and the first surface in 22 second section 90 of retention groove 23a is axially aligned.In addition, at least part of the second side surface 80b of retainer second part 60 and the second section of retention groove 90 second surface 23b is axially aligned.First side surface 80a and the second side surface 80b is inclined.

Spring retainer is rotated from alignment position to its installation site.Torsional spring retainer causes the long axis of retainer Line is perpendicular to plunger axially bored line.In installation site, a part and the slot of the first side surface 76a of retainer first part 58 First surface 23a overlaps, and contacts the surface at least partly.Second side surface 76b of retainer first part 58 It overlaps with the second surface 23b of slot, and contacts the second surface 23b at least partly.Moreover, in retainer Rounded transitional region 76c and slot first surface 23a between the first side surface 76a and the second side surface 76b of a part 58 and Rounded transitional region 23c between slot second surface 23b overlaps.Transitional region can be in contact with each other.Retainer first part 58 the first side surface 76a and the second side surface 76b are located at the first side 76 of first part 58.First side surface and the second side table Face can also be known as first surface and second surface.First slot cross-section 86 forms a part for slot 22, the part and retainer the Rounded transitional region 76c, the second side surface 76b of a part 58 and the first side surface 76a overlappings.

Moreover, in installation site, a part and the slot of the first side surface of retainer 80a of retainer second part 60 First surface 23a is overlapped, and contact first surface 23a at least partly.Second side surface 80b of retainer second part 60 It is Chong Die with the second surface 23b of slot, and the second surface 23b is contacted at least partly.Moreover, in retainer second Rounded transitional region 80c and slot first surface 23a and slot between the first side surface 80a and the second side surface 80b of part 60 Rounded transitional region 23c between second surface 23b overlaps.Transitional region can be in contact with each other.Second slot cross-section 90 forms slot A part, the part by retainer second part 60 rounded transitional region 80c, the second side surface 80b and the first side surface 80a is overlapped.The the first side surface 80a and the second side surface 80b of retainer second part 60 are located at the first side of second part 60 80.First side surface and the second side surface can also be known as first surface and second surface.Once retainer is in installation site, Valve deck 34 is then installed.Also plunger 24 is allowed freely to be moved back and forth in plunger hole.

In more detail, as previously mentioned, keeping tank 20 that there is the first section 86 and the second section 90.First section has the One end, first end carry the opening 22a for leading to plunger hole transitional region 70.First section 86 has second end, and second end carries Lead to the second opening 22c of valve cover hole transitional region 78.Valve cover hole transitional region 78 can also be known as valve opening Transition edges.Slot One section 86 has the first surface 23a for being referred to alternatively as the first inclined surface.The first section of slot 86, which has, to be referred to alternatively as second and inclines The second surface 23b of skewed surface.Second inclined surface and the first inclined surface polymerize toward each other and towards the substrate of slot.In slot The angle 200 formed between first surface 23a and second surface 23b is between 90 ° and 180 °.More generally, the angle is at 100 ° Between 150 °.For diameter from 3.75 plunger size up to 6.75 inches, which is preferably 120 °.The substrate of slot is to close 's.It is the transitional region 23c of one end that one end of first surface 23a is connected to second surface 23b in the bases of slot.Such as this Well known to field, fluid end changes size and size with the variation of plunger size.Transitional region 23c is circular surface, and is had There is recess.

Second slot cross-section 90 has the structure identical with the first slot cross-section 86.Second slot cross-section has first end, first end With the first opening 22d for leading to plunger hole transitional region 70.Second section 90 has second end, and second end, which carries, leads to valve deck Second opening 22b of hole transitional region 78.The second section of slot 90 has the first surface 23a for being referred to alternatively as the first inclined surface. The second section of slot 90 has the second surface 23b for being referred to alternatively as the second inclined surface.Second surface 23b and first surface 23a courts It polymerize to each other and towards the substrate of slot.The angle 200 formed between slot first surface 23a and second surface 23b 90 ° with Between 180 °.The substrate of slot is to close.It is that one end of first surface 23a is connected to second surface 23b in the bases of slot One end transitional region 23c.The transitional region is circular surface, and with recess.Although the first slot cross-section 86 and the second slot First inclined surface in section 90, the second inclined surface and rounded transitional region are identical in terms of structure snd size, but they It may be different.

It is apparent that plunger hole transitional region is located at the of the first end in the first section 86 of slot 22 and the second section 90 of slot Between one end, and it is coplanar with the first end of the first end in the first section 86 of slot 22 and the second section 90 of slot.Plunger hole mistake It crosses region and the slotless gap for being formed as circular surface between two above first end is provided.Also, valve cover hole transitional region 78 Between the second end in the second section 90 of the second end and slot 22 in the first section 86 of slot 22, and with first section of slot 22 The second end in face 86 and the second end in the second section 90 of slot 22 are coplanar.Valve cover hole transitional region 78 is provided in two above second Be formed as the slotless gap of circular surface between end.

As in Fig. 7 A-7H as it can be seen that retainer 20 have unique structure.Retainer is single single piece, can be added by inorganic The single cast member of work is made or is made by cylindrical rod forge piece is machined.As previously mentioned, retainer has first part 58 With second part 60.First part extends in the first end 100a of the substrate 100 from base part 100.Second part 60 exists The second end of the substrate 100b extends from base part 100.Base part has first surface on the first side 102 of substrate 102a.Substrate first surface 102a is flat.Base part has second surface 104a in the second side 104 of substrate.Substrate Second surface is flat.The second side and the first side are opposite.The first part 58 that the slave substrate 100 of retainer extends relative to Substrate tilt.Exterior angle 202 is more than 180 ° and less than 270 °.More generally, which is more than 200 ° and less than 250 °.For diameter From 3.75 plunger size up to 6.75 inches, which is preferably 240 °.The first part 58 of retainer is in first part 58 The second side 108 at have third surface 106.Third surface 106 is tilted relative to the second side surface of substrate 104a.The angle 204 are more than 90 ° and less than 180 °.More generally, which is more than 100 ° and less than 150 °.For diameter from 4.5 up to 6.75 The plunger size of inch, which is preferably 123 °, and wherein retainer is casting, and retainer is mach wherein In the case of, which is preferably 130 °.For a diameter of 3.75 and 4.5 inches of plunger size, which is preferably 125 °, Middle retainer is casting.The angle is such angle, is caused from substrate along third surface towards retainer first part Central axis 56 of the direction of 58 first end section 58a far from retainer.The first surface 76a of first side 76 is also relative to base Bottom first surface 102a is tilted.Exterior angle 202 is more than 180 ° and less than 270 °.More generally, which is more than 200 ° and is less than 250°.For diameter from 3.75 plunger size up to 6.75 inches, which is preferably 240 °.The surface tilts so that from Substrate is along first surface 76a towards the direction of first end section 58a far from retainer central axis 56.Second table of the first side 76 Face 76b is tilted relative to first surface 76a.Exterior angle 206 is more than 180 ° and less than 270 °.More generally, which is more than 200 ° And less than 250 °.For diameter from 3.75 plunger size up to 6.75 inches, which is preferably 240 °.Second surface inclines Tiltedly so that the direction of the end margin 114 from first surface along second surface towards first end section 58a is towards central axis 56. The first surface 76a and second surface 76b of the first side of retainer 76 are not flat.They are quite round.The circular surface can To be considered convex surface or arch.They have peak.First surface 76a is connected to the transitional region of second surface 76b 76c is circular.It has peak.Moreover, the rounded transitional region 102b with peak is by substrate first surface 102a It is connected to first surface 76a.Also, the second side surface of substrate 104a is connected to the by the rounded transitional region 104b with recess A part, third surface 106.As previously mentioned, the first part of retainer has leading edge 84.First part also has back edge 85。

The third surface 106 of the second surface 76b of first part 58 towards first part tilts.End margin 114 is in third Being formed near point between surface and second surface.End margin extends to back edge 85 from leading edge 84.It is in back edge There is peak between leading edge.

4th surface 116 of retainer first part 58 extends to substrate from back edge.4th surface 116 is in side by Three surfaces 106 limit, and in opposite side by between first surface 76a, second surface 76b and first surface and second surface Transitional region 76c limitation.

5th surface 118 of retainer first part 58 extends to substrate 100 from leading edge 84.5th surface 116 is one Side is limited by third surface 106, and in opposite side by first surface 76a, second surface 76b and first surface and the second table Transitional region 76c limitations between face.

The second part 60 that the slave substrate 100 of retainer extends is relative to substrate tilt.Exterior angle 216 is more than 180 ° and is less than 270°.More generally, which is more than 200 ° and less than 250 °.For diameter from 3.75 plunger size up to 6.75 inches, The angle is preferably 240 °.Retainer second part 60 has the second side 126, and the second side 126 has relative to substrate the second side The inclined third surfaces 124 of surface 104a.Angle 218 is more than 90 ° and less than 180 °.More generally, the angle be more than 100 ° and Less than 150 °.For diameter from 4.5 plunger size up to 6.75 inches, which is preferably 123 °, and wherein retainer is casting It makes, and in the case of retainer is mach wherein, which is preferably 130 °.For diameter from 3.75 and 4.5 English Very little plunger size, the angle are preferably 125 °, and wherein retainer is casting.The angle is such angle so that from base Central axis 56 of the direction far from retainer of first end section 60a of the bottom along third surface towards retainer second part 60 inclines Tiltedly.The first surface 80a of retainer second part is tilted also relative to substrate first surface 102a.Exterior angle 216 be more than 180 ° and Less than 270 °.More generally, which is more than 200 ° and less than 250 °.For diameter from the 3.75 plunger ruler up to 6.75 inches Very little, which is preferably 240 °.The surface tilts so that from substrate along first surface 80a towards retainer second part 60 The direction of first end section 60a is far from retainer central axis 56.The second surface 80b of retainer second part is relative to first Surface 80a is tilted.Exterior angle 220 is more than 180 ° and less than 270 °.More generally, which is more than 200 ° and less than 250 °.For Diameter from 3.75 plunger size up to 6.75 inches, the angle be preferably 240 °.Second surface tilts so that from first surface Along second surface towards the direction of the end margin 132 of first end section 60a towards central axis 56.Retainer second part 60 First surface 80a and second surface 80b is not flat.They are quite round.The circular surface may be considered convex surface or arch Shape.They have peak.It is circular by the transitional region 80c that first surface is connected to second surface.It has highest Point.Moreover, substrate first surface 102a is connected to first surface 80a by the rounded transitional region 128 with peak.Also, The second side surface of substrate 104a is connected to the third surface of retainer second part by the rounded transitional region 130 with recess 124.As previously mentioned, the second part of retainer has leading edge 88.Second part also has back edge 89.

The third surface 124 of the second surface 80b of retainer second part towards retainer second part tilts.End margin 132 being formed near point between third surface and second surface.End margin extends to back edge 89 from leading edge 88.End Edge has peak between back edge 89 and leading edge 88.

4th side surface 134 of retainer second part 60 extends to substrate 100 from back edge 89.4th side surface 134 It is limited in side by third surface 124, and in opposite side by first surface 80a, second surface 80b and first surface and Transitional region 80c limitations between two surfaces.

5th side surface 136 of retainer second part 60 extends to substrate 100 from leading edge 88.5th side surface 136 It is limited in side by third surface 124, and in opposite side by first surface 80a, second surface 80b and first surface and Transitional region 80c limitations between two surfaces.

Substrate has third surface 120 and the 4th opposite surface 122.4th surface substrate first surface 102a with Between second surface 104a.The third surface opposite with the 4th surface is between the first surface and second surface of substrate.4th Surface has central part 122a and first end section 122b and second end section 122c, and wherein first end section 122b is opposite It is tilted in central part, second end section 122c is tilted relative to central part.Between first end section and central part Angle 208 is between 90 ° and 180 °.Angle 210 between central part and second end section is between 90 ° and 180 °.The A part and the angle 208 and 210 between central part and second part and central part are identical, and more generally More than 100 ° and less than 150 °.For diameter from the 3.75 plunger pore size up to 6.75 inches, angle 208,210 is preferably 155°。

The third surface of substrate has central part 120a and first end section 120b and second end section 120c, wherein First end section 120b is tilted relative to central part, and second end section 120c is tilted relative to central part.In first end Divide the angle 212 between 120b and central part 120a between 90 ° and 180 °.In central part 120a and second end section Angle 214 between 120 is between 90 ° and 180 °.Between first part and central part and second part and central part Angle 212,214 be identical, and more often over 100 ° and less than 150 °.For diameter from 3.75 up to 6.75 English Very little plunger pore size, angle 212,214 are preferably 155 °.When retainer attempts to rotate in any direction of rotation, angle 208th, 210,212,214 help to ensure retainer against valve deck.

Spring receives first side surface 102a of the sleeve 82 along retainer central axis 56 from substrate 100 to extend outwardly.

It is apparent that the third surface 120 of substrate and the 4th surface 116 of retainer first part 58 and retainer second 5th surface 136 of part 60 is integrated.4th surface 122 of substrate and the 5th surface 118 of retainer first part with And the 4th surface 134 of retainer second part is integrated.

In addition to central axis, retainer has the second minor axis for extending through substrate third surface and the 4th surface 138.Retainer also has the first long axis 140, and long axis 140 is extended through at the end margin 114 of retainer first part 58 End and retainer second part 60 end margin 132 end.First axle is perpendicular to second axis and central axis Or third axis 56.Third axis is perpendicular to second axis.Second axis extends along the width of retainer.First axle edge is kept The length extension of device.The length is at least twice of width.

As shown in figure 3, between the long axis of plunger and circular transition section 23c along suction axially bored line direction extraction away from From 230, for 3.75 and 4 inches of plunger size, which is 1.58 inches, should for 4.5 and 5 inches of plunger size Distance is 1.88 inches, and for 5.5 and 6 inches of plunger size, which is 2.13 inches, and for 6.5 and 6.75 English Very little plunger size, the distance are 2.39 inches of

Another embodiment of fluid end 400 for being used in piston pump is shown in figures 10 to 16.Such as Figure 10 institutes Show, fluid end 400 includes through-hole 402, valve cover hole 406, suction hole 410 and discharge orifice 414, and wherein through-hole 402 is in piston side And with long axis 404, valve cover hole 406 is with central axis 408, and suction hole 410 is with suction hole long axis 412, discharge orifice 414 have discharge orifice long axis 416.Through-hole in piston side is referred to alternatively as piston hole 402.But practical upper piston not into Enter through-hole 402, but padding（It is not shown in figure）Interior operation is with the generation pressure in fluid end 400.Piston hole 402 and valve deck Hole 406 is aligned at least partly, and equally, suction hole 410 and discharge orifice 414 are also aligned at least partly, and substantially with work Consent 402 and valve cover hole 406 are vertical.Valve cover hole 406 is also referred to as bonnet bore 406.Piston hole 402, is taken out valve cover hole 406 Sucker 410 and discharge orifice 414 are all intersecting in cross bore intersection 418, and cross bore intersection 418 includes limiting open space 420 Surface.As best shown in figure 11, valve cover hole 406 terminates at cross bore intersection 418 and open space 420.Valve opening transition Or termination area 422 is limited from valve cover hole 406 to open space 420 and the transition region of horizontal perforation intersection 418.Piston hole 402 Open space 420 is terminated at, and horizontal perforation intersects 418.Piston hole transition or termination area 424 are limited from piston hole to opening Space 420 and horizontal perforation intersect 418 transition region.These transitional regions 422 and 424 may be machined with circular wheel It is wide.

As shown in Figure 10, cross bore intersection 418 is configured to the spring retainer for including being fastened in slot 430 428, wherein Spring retainer 428 carries and guides the spring resistance valve module for suction valve, and suction valve configuration is flowed into and passed through to control The fluid of suction hole 410.Spring retainer 428 is also referred to as retainer or retainer ring 428.Therefore, when retainer 428 By the fluid for flowing through open space 420 power when, retainer 428 can rotate.Valve deck 426 can be in cross bore intersection It is fastened at 418 opposite end in valve cover hole 406.Valve deck 426 can be referred to as bonnet 426.In order to abut retainer ring 428 simultaneously Its rotation is prevented, when in the open space 420 for being mounted on cross bore intersection 418 in retaining ring 428 and being fastened in slot 430, Valve deck 426 can include protrusion 427, and protrusion 427 is configured to extend when bonnet 426 is fastened to fluid end 400 Into open space 420 and cross bore intersection 418.

Figure 15 shows the slot 430 for including opposite section, opposite section for the first section 432 and with described first section The second opposite section 434 of face 432.Both first section 432 and the second section 434 share substantially the same component, and Therefore, the first section 432 is will be described in detail herein, and its element will use " a " specified, wherein all identical second sections Surface element will use " b " specified herein.Figure 11 is the sectional view of an embodiment of cross bore intersection 418, is shown First section 432 of slot 430, the first section 432 of bracket groove 430 include first end 436a and second end 438a, and as schemed Shown, wherein first end 436a is close to piston hole transitional region 424, and second end 438a is close to bonnet bore transitional region 422.Slot 430 the first section 432 further includes the first inclined surface 440a and the second inclined surface 442a, and wherein angle 444a is inclined by first Skewed surface 440a and the second inclined surface 442a is limited.The angle can by intersecting to form between surface 440 and 442a or only Formation is polymerize by circular-base 431 of the surface 440 with 442a toward each other and towards the first section 432 of slot 430.Substrate 431a can be considered as to be formed by the surface 440a and 442a for progressivelying reach intersection.Angle 444a can be more than 90（90）Degree, but Less than 180（180）Degree.As shown in figure 14, gap 446a and 446b makes the first section 432 and the second section of slot 430 434 separation.The position of gap 446a and 446b occur respectively when slot 432 intersects with piston hole 402 and bonnet bore 406.

Figure 12 A are turned now to, the embodiment of retainer ring 428 is shown, wherein retainer ring 428 is disposed for and piston Pump is used together.The configuration is different from the above embodiment, because piston does not enter cross bore intersection 418 or very To not entering through-hole 402.Therefore, retaining ring 428 can be arranged in open space 420 in the case where not interfering pumping function. As described above, retainer can be single single piece, it can be by being made or by cylindrical rod forge piece without mach single cast member It is machined to be made.Figure 12 A-12H show to include substrate 448, retainer first part 450 and retainer second part 452 Retainer ring 428.In addition, retainer ring 428 has central axis 454.As shown in Figure 14 and Figure 15, spring retaining sleeve 476 It is configured to receive or otherwise engage with valve spring 530, valve spring 530 is from the substrate 448 in installation site to downward It stretches.

As shown in Figure 12 A and Figure 13, substrate 448 includes limiting the upper surface 458 of thickness 462 and lower surface 460.The thickness Do not include keeping sleeve 476.As in Figure 12 A best seen from substrate 448 includes the first end 464 and second end of limit length 469 466.Substrate 448, which further includes, limits the first side 470 of width 474 and the second side 472.As shown in the figure, in one embodiment, Substrate 448 can be circular, and wherein length 468 and width 474 is roughly equal.But the shape of substrate 448 is not limited to justify Shape.Axially extending surface 445 extends between upper surface 458 and lower surface 460.Axially extending surface 445 forms substrate 448 Outer surface.The multiple portions of axial surface 445 are between holding part 450 and 452.It is every in these parts about these parts One end of a axially extending surface is connected to upper surface 458, and its opposite one end is connected to lower surface 460.These parts Positioned at the first side 470 and the second side 472.Holding part 450 and 452 extends radially outwardly from the other parts of axial surface 445. The top of axial surface 445 is continuous uninterrupted with upper surface 458, and surrounds axis 454 and the central area of substrate 448.Axis It is set to extensional surface 445 around axis 454.Axially extending surface 445 is circumference around axis bending.Axial surface 445 Radial distance is moved from axis.Axial surface 445 has outer diameter.If Figure 12 A-12H and 13 are further illustrated, spring retaining sleeve 476 extend outwardly away from lower surface 460, and valve guide hole 478 passes through substrate 448 and spring retaining sleeve 476（If there is）Two Person.As shown in figure 13, valve guide hole 478 limits diameter 524, and is configured to the lead arm being received on valve 532 or valve rod 536 （As shown in figure 15）.In some cases, as shown in the figure, hole 478 can include step 526, step 526 allows insertion piece 528 It is contained in substrate 448 and/or spring retaining sleeve 476.In this case, the diameter of insertion piece is to receive lead arm/valve The diameter of bar 536.Other than hole 478, substrate 448 can have mesopore 478', mesopore 478' along long axis 454 and with Long axis 454 is coextensive, and is in fluid communication with hole 478.Sleeve 476 has axially extending surface 477, axially extending surface 477 have the end for terminating at lower surface 460.Axially extending surface is axially extending far from lower surface, and terminates at and lower surface The free end of 460 opposite sleeves 476.Axially extending surface forms outer surface.Axially extending surface 477 surrounds axis 454.Axis It is continuous and continual to extensional surface 477.Axially extending surface 477 is circumference around axis bending.It is axially extending Radial distance is moved from axis in surface 477.Axially extending surface has outer diameter.Axially extending surface can be from lower surface to sleeve Free end is axially inwardly tapered.The radial displacement slave axis 454 to the outer diameter of axial surface 477 at lower surface 460 is small In at lower surface 460 slave axis 454 to the radial displacement of the outer diameter of axial surface 445.

Figure 13 shows the embodiment of the retainer ring 428 of Figure 12 A-12H, and shows the holding relative to substrate 448 Device first part 450 and retainer second part 452.As shown in the figure, retainer first part 450 is from first end 464 to outer diameter To extension, and 480 and the 4th surface 482 of third surface including limiting thickness 484.Retainer first part 450 also has The first end 486 of first end 486 and second end 488, wherein retainer first part 450 is in the first end 464 close to substrate 448 Place and substrate 448 is attached between upper surface of substrate 458 and substrate lower surface 460.Retainer first part 450 is additionally included in The first end section 490 of second end 488.First end section 490 includes first surface 492 and second surface 494, wherein the first table Face 492 and second surface 494 are inclined, and form exterior angle 496.First end section can be referred to as the first key 490.The angle Degree can intersecting to form or only by surface toward each other and towards the circle of connection surface 492 and 494 by surface 492 and 494 The polymerization of transitional region 503 is formed.The transitional region may be considered to be intersected to form by surface 492 and 494.Exterior angle 496 can be with It is greater than 180（180）It spends and less than 360（360）Any angle of degree, wherein ordinary range is 180 （180）Degree and 270（270）Between degree, it is preferred that range is about 200（200）It spends and about 240 degree（240）Degree Between.The intersection of first surface 492 and second surface 494 can be point or justify, transitional region 503 as shown in figure 12e. First surface 492 and second surface 494 can be flat or slightly convex（It is bent outwardly）.

Moreover, as shown in Figure 12 E and Figure 13, the third surface 480 of retainer first part 450 is relative to substrate 448 464 angle of inclination 498 of first end, and the 4th surface 482 is tilted relative to the first end 464 of substrate 448, as shown in the figure, its Middle surface 482 is relative to 460 directional inclination angle 500 of bottom surface.Angle 498 and 500 can be configured so that third surface 480 and the 4th surface 482 it is substantially parallel, can be configured with generating constant thickness 484 or angle 498 and 500 so that Three surfaces 480 and the 4th surface 482 are angled with respect to each other, and lead to the variable thickness 484 of retainer first part 450.Angle 498 can be greater than about 20（20）It spends or less than about 160（160）Degree, and preferably about 45（45）With about one 135（135）Between degree.Angle 500 can be from 110（110）It spends to 250（250）Between degree, preferably About 135（135）Degree and about 225（225）Between degree.Third surface 480 end 464 at and axial surface 445 is intersecting.Angle 498 is between third surface 480 and axial surface 445.Crosspoint upper surface 458 and lower surface 460 it Between.Axial surface 445 extends outwardly away from crosspoint towards upper surface 458.A part for upper surface 458 and axial surface 445 is being handed over On crunode.4th surface 482 is connected to substrate 448 at end 464.4th surface 482 is connected to the radial direction of lower surface 460 most Outer portion, the part are connected to 460 part of lower surface including axial surface 445.Angle 500 is in the 4th surface 482 and lower surface It is formed between 460.

Third surface 480 can be intersected with angle 499 with the primarily radially extensional surface 491 of key 490, wherein angle 499 It can be 110（110）Degree and 250（250）Between degree, preferably about 135（135）Degree and about 200 25（225）Between degree.Moreover, the 4th surface 482 can be with angle 501 and 493 phase of primarily radially extensional surface of key 490 It hands over, wherein angle 501 can be 110（110）Degree and 250（250）Between degree, preferably about 135 （135）Degree and about 225（225）Between degree.In one embodiment, angle 499 and 501 is configured to determine on key 490 To the wall that the open space 420 including slot 430 is formed to be substantially perpendicular to.The primarily radially master of extensional surface 491 and key 490 Want axially extending surface 495 intersecting.Surface 495 and first surface 492 are opposite.Surface 495 in the axial direction relative to 491 protrusion of surface.The intersection region on surface 495 and surface 491 is recessed circle.The primarily radially master of extensional surface 493 and key 490 Want axially extending surface 497 intersecting.Surface 497 is opposite with second surface 494.Surface 497 in the axial direction relative to 493 protrusion of surface.The intersection region on surface 497 and surface 493 is recessed circle.

Similarly, as shown in Figure 12 E and Figure 13, retainer second part 452 includes limiting the third surface of thickness 506 502 and the 4th surface 504.Retainer second part 452 also has first end 508 and second end 510, wherein retainer second 452 first end 508 is divided to be attached to substrate 448 at the second end 466 close to substrate 448.Retainer second part 452 also wraps It including in the second end section of second end 510 512, wherein second end section 512 includes first surface 514 and second surface 516, Middle first surface 514 and second surface 516 tilt and form angle 518.The angle is in outside.The angle can be by surface 514 It is intersected to form or only by surface toward each other and towards the rounded transitional region 505 of connection surface 514 and 516 with 516（ It is shown in Figure 12 E）Polymerization formed.The transitional region 505 may be considered to be intersected to form by surface 514 and 516.Angle 518 It may be greater than 180（180）It spends and less than 360（360）Any angle of degree, wherein ordinary range is 108 Ten（180）Degree and 270（270）Between degree, it is preferred that range is about 200（200）It spends and about 240 degree（240） Between degree.The intersection of first surface 514 and second surface 516 can be point or rounded transitional region as shown in figure 12e 505.Second end section 512 is properly termed as the second key 512.As shown in figure 15, the surface 492 and 494 of the first key and the second key The orientation on surface 514 and 516 and the surface 440a and 442a in configuration and the first section 432 of slot 430 and slot 430 second The orientation of the surface 440b and 442b in section 434 and configuration are complementary.

Moreover, as shown in figure 13, third surface 502 relative to substrate 448 466 angle of inclination 520 of second end, and the Four surfaces 504 relative to substrate 448 466 angle of inclination 522 of second end.Angle 520 and 522 can be configured so that the Three surfaces 502 and the 4th surface 504 are substantially parallel, can be configured with generating constant thickness 506 or angle 520 and 522, So that third surface and the 4th surface are angled with respect to each other, to generate variable thickness 506.Angle 520 can be greater than about two Ten（20）It spends or less than about 160（160）Degree, and preferably about 45（45）With about 135（135）Spend it Between.Angle 522 can be from 110（110）It spends to 250（250）Between degree, preferably about 135 （135）Degree and about 225（225）Between degree.Intersect at end 466 with axial surface 445 on third surface 502.Angle 520 between third surface 502 and axial surface 445.The crosspoint on third surface 502 and surface 445 is in upper surface 458 under Between surface 460.Axial surface 445 extends towards upper surface 458 far from crosspoint.Upper surface 458 and axial surface 445 A part is on crosspoint.4th surface 504 is connected to substrate 448 at end 466.4th surface 504 is connected to lower surface 460 radially part, the part are connected to 460 part of lower surface including axial surface 445.Angle 522 is on the 4th surface It is formed between 504 and lower surface 460.

Third surface 502 can be intersected with angle 521 with the primarily radially extensional surface 513 of key 512, wherein angle 521 It can be 110（110）Degree and 250（250）Between degree, preferably about 135（135）Degree and about 200 25（225）Between degree.Moreover, the 4th surface 504 can be with angle 523 and 515 phase of primarily radially extensional surface of key 512 It hands over, wherein angle 523 can be 110（110）Degree and 250（250）Between degree, preferably about 135 （135）Degree and about 225（225）Between degree.In one embodiment, angle 521 and 523 is configured to determine on key 512 To the wall that the open space 420 including slot 430 is formed to be substantially perpendicular to.The primarily radially master of extensional surface 513 and key 512 Want axially extending surface 517 intersecting.Surface 517 and first surface 514 are opposite.Surface 517 in the axial direction relative to 513 protrusion of surface.The intersection region on surface 517 and surface 513 is recessed circle.The primarily radially master of extensional surface 515 and key 512 Want axially extending surface 519 intersecting.Surface 519 and second surface 516 are opposite.Surface 519 in the axial direction relative to 515 protrusion of surface.The intersection region on surface 519 and surface 515 is recessed circle.

As shown in Figure 12 E and 12F, have first each of in retainer first part 450 and retainer second part 452 Cross side and the second cross side.First cross side and the second cross side are respectively provided with the first lateral surfaces 600a, 600b and Two lateral surfaces 610a, 610b.Each lateral surfaces 600a, 600b, 610a, 610b have bending part 600a ', 610a ', 600b′、610b′.Each lateral surfaces 600a, 600b, 610a, 610b have straight part 600a ' ', 610a ' ', 600b ' ', 610b′′.The the first lateral surfaces 600a and the second lateral surfaces 610a of first holding part 450 are from 450 first end of holding part 486 extend to second end 488.First lateral surfaces 600a extends from the first side 470 of substrate 448, and the second lateral surfaces 610a extends from the second side 472 of substrate.The bending part 600a ' of first lateral surfaces 600a is on the first side 470 from substrate 448 extensions, and extend from first end 486 towards second end 488, but do not reach second end 488.Straight part 600a ' ' is from the Two ends 488 extend towards substrate 448 and first end 486, but do not reach first end 486.Bending part 600a ' and straight part 600a ' ' meets between first end 486 and second end 488.In addition to the second lateral surfaces 610a and its bending part 610a ' and Straight part 610a ' ' is oriented in except the second side 472 of substrate 448, the second lateral surfaces 610a and its bending part 610a ' and Straight part 610a ' ' is carried out in a manner of identical with the first lateral surfaces 600a and its bending part 600a ' and straight part 600a ' ' Configuration.Connection third surface 480 and the 4th surface 482 each of in first lateral surfaces 600a and the second lateral surfaces 610a. Each of which also all connects first surface 492 and second surface 494.First lateral surfaces 600b of retainer second part 452 In 448 first side 470 of substrate second part second end 510 is extended to from 452 first end 508 of second part.With with first laterally Surface 600a and its bending part 600a ' and straight part 600a ' ' are oriented relative to substrate 448 and are configured as retainer A part of identical mode of first part 450, to lateral surfaces 600b and its bending part 600b ' and straight part 600b ' ' phases Substrate 448 is oriented and is configured to the part for retainer first part 450.In addition to the second lateral surfaces 610b and its bending part 610b ' and straight part 610b ' ' are oriented in except the second side 472 of substrate 448, the second lateral surfaces 610b and its bending part 610b ' and straight part 610b ' ' is with the first lateral surfaces 600b and its bending part 600b ' and directly Mode identical part 600b ' ' is configured.

As shown in figure 15, spring retaining sleeve 476 may be inserted into one end of spring 530.Alternatively, spring retaining sleeve 476 can include being disposed for receiving and keeping the recess of spring 530（It is not shown）.The other end and suction valve of spring 530 532 operable connections.As best shown in fig. 15, suction valve 532 includes contact surface 534 and lead arm 536.The arm can be with Referred to as valve rod 536.The supporting surface 534 of suction valve 532 is rested on the valve seat 538 carried by fluid end 400.In fluid end Bleed valve assembly 900 is shown and keeps valve deck 901.

Retainer ring 428 is installed similar to the above embodiment.As shown in FIG. 14 and 15, in order to by retainer ring 428 are mounted on holding valve 532 in suction hole 410, and valve seat 538 and valve 532 are inserted by user across bonnet bore 406, and Valve seat 538 and valve 532 is made to fall into suction hole 410, into installation site, wherein valve rod 536 upwardly extends.Then, pass through bonnet Hole 406 supplies spring 530, and it is made to fall on valve rod 536 so that valve rod is received into spring 530.Spring 530 is to valve 532 top surface applies pressure.

As shown in figure 16, retainer ring 428 is inserted by valve cover hole 406, wherein retainer first part 450 and retainer Second part 452 is aligned with long axis 404 and central axis 412.This allows retaining ring 428 being inserted freely into open space 420, because of width 474（See Figure 16）Less than the clear distance between the first slot cross-section 432 and the second slot cross-section 434.Then by bullet Spring receives sleeve 476 to be received into spring 530.As being best shown in Figure 15, in order to which retainer ring 428 is fixed on fluid end It, can be with slightly compressed retainer ring with reloading spring 530, then around 454 rotating holder ring 428 of axis in 400 so that the One key 490 is received into the first section 432 of slot 430, and the second key 512 is received into the second section 434 of slot 430. As shown in the figure, key 490 and 512 is configured to and 432 and 434 complementation of slot cross-section.The first surface 492 of first key 490 and slot 430 The first surface 440a in the first section 432 is engaged.Similarly, first section of the second surface 494 of the first key 490 and slot 430 The second surface 442a in face 432 is engaged, the first surface 514 of the second key 512 and first table in the second section 434 of slot 430 Face 440b is engaged, and the second surface 516 of the second key 512 connects with the second surface 442b in the second section 434 of slot 430 It closes.Retainer ring 428 is fixed in open space 420 by key 490 and 512 and the engagement of the part 432 and 434 of slot 430, and The engagement on surface prevents retaining ring in either direction since fluid end 400 being passed through to pump linearly being put down caused by for fluid It moves.

Figure 14 shows installation site of the retaining ring 428 in fluid end 400, and wherein retaining ring is arranged on cross bore intersection 418 and open space 420 in.Figure 10 is returned to, due to flowing through the stream of cross bore intersection 418 from suction hole 410 to discharge orifice 414 Body apply power, even if retaining ring 428 can rotate in open space 420, retainer ring 428 will not rotate it is so much, So that its retainer first part 450 and 452 section of retainer second part can be removed from slot cross-section 432 and 434.Valve deck 426 It prevents from excessively rotating.Rotation of the retainer on the second circumferencial direction is by the protrusion 427 of valve deck 426 against retainer portion 452 are divided to prevent.Rotation in the first circumferential direction is prevented by the protrusion 427 of valve deck 426 against retainer part 450. Because the protrusion 427 of valve deck 426 intersects with the circle rotation of part 450 and 452, valve deck 426 serves as butting section.Valve Protrusion 427 on lid 426 is configured as shown in Figure 10, so as to abut retainer first part 450 or retainer the The degree of two parts 452 is extended in open space 420 and cross bore intersection 418, and prevents retainer first part 450 Or retainer second part 452 is rotated out of and is connect with the holding of slot 430.

In this specification（Including any the appended claims, abstract and attached drawing）Disclosed in all features, and/or this All steps of any method disclosed in sample or process can any combinations mode be combined, in addition to wherein at least some spy Sign and/or step are except the combination of mutual exclusion.

Unless otherwise clear explanation, in this specification（Including any the appended claims, abstract and attached drawing）Disclosed in Each feature can be replaced by the alternative characteristics for serving identical, equivalent or similar purpose.Therefore, unless otherwise clear Illustrate, disclosed each feature is only that universal serial is equivalent or an example of similar characteristics.

The details that present invention is not limited to the embodiments described above.The present invention is extended in this specification（Including any appended Claims, abstract and attached drawing）Disclosed in feature in any novel feature or any novel combination or extend to The step of any novelty of the step of any method disclosed in this way or process or any novel combination.

Claims

1. a kind of fluid end of pump, including：

The through-hole being formed in a part for the fluid end, the through-hole have long axis；

The discharge orifice being formed in a part for the fluid end, the discharge orifice have long axis；

The suction hole being formed in a part for the fluid end, the suction hole have long axis；

The valve cover hole being formed in a part for the fluid end, the valve cover hole have central axis, and the central axis prolongs It extends in the through-hole；

Be formed in the cross bore intersection in a part for the fluid end, the through-hole, the discharge orifice, the valve cover hole, The opening for leading to the cross bore intersection is respectively provided with the suction hole, the long axis of the suction hole extends through the row The opening for leading to the cross bore intersection of discharge hole, what the long axis of the discharge orifice extended through the suction hole leads to institute The opening of cross bore intersection is stated, the axis of the valve cover hole extends through the through-hole and leads to opening for the cross bore intersection Mouthful；

Hole transitional region, positioned at the through hole for leading to the cross bore intersection, and the neighbouring cross bore intersection；

Valve cover hole transition region, positioned at leading at the valve cover hole of the cross bore intersection, and the neighbouring valve cover hole and The cross bore intersection；

Slot, the slot cross the curved path around open space, and the long axis of the discharge orifice and the suction hole extends Into the open space, the slot has the first section and the second section；First section has a first end and a second end； Second section has a first end and a second end；There is the phase of closing each of in first section and second section To substrate, and each section has an open sides, has the first nauropemeter each of in first section and the second section Face and the second inclined surface, first inclined surface and the second inclined surface in first section are toward each other and towards described The substrate polymerization in one section, the angle formed between first inclined surface and the second inclined surface in first section exist Between 90 ° and 180 °；First inclined surface and the second inclined surface in second section are toward each other and towards described second The substrate polymerization in section, the angle formed between first inclined surface and the second inclined surface in second section are more than 90 ° and less than 180 °；

Gap between the first end in first section of the slot and the first end in second section；

Gap between the second end in first section of the slot and the second end in second section；

Retainer is configured in the fluid end, and suitable for the bar of bearing suction valve, and the retainer includes：

First part has first surface and second surface, and the first surface is tilted relative to the second surface, by described The exterior angle that the first surface of first part and the second surface are formed is more than 180 ° and less than 270 °；

Second part has first surface and second surface, and the first surface is tilted relative to the second surface, by described The exterior angle that the first surface of second part and the second surface are formed is more than 180 ° and less than 270 °；

Substrate, the first part and the second part extend from the substrate, and the substrate, which has, to be suitable for receiving the pumping Inhale the valve guide hole of the bar of valve；

The third surface of the first part of wherein described retainer is inclined outwardly relative to the substrate；And wherein described holding The third surface of the second part of device is inclined outwardly relative to the substrate.

2. a kind of retainer for the bar for being suitable for supporting suction valve in pump, the retainer include：

Substrate, the first part and the second part extend from the substrate, and the substrate, which has, receives the suction valve The bar valve guide hole；

The third surface of the first part of wherein described retainer is inclined outwardly relative to the substrate；And

The third surface of the second part of wherein described retainer is inclined outwardly relative to the substrate.

3. retainer as claimed in claim 2, wherein the substrate includes first end and second end, and the retainer Angle of the third surface of first part between 45 (45) and 135 (135) degree is inclined relative to the first end Tiltedly, and the third surface of the second part of the retainer with 45 (45) and 135 (135) spend between angle Degree is tilted relative to the second end.

4. retainer as claimed in claim 2, wherein the first surface of the first part and second surface limit the first key, The first surface and second surface of the second part limit the second key, wherein first key and second key are configured to connect It is contained in the slot in the cross bore intersection of the fluid end of the pump.

5. retainer as claimed in claim 4, wherein when the retainer is in installation site, first key and described Second key is perpendicular to the wall for the slot being included in the cross bore intersection of piston pump fluid end.

6. retainer as claimed in claim 2, wherein the substrate further includes the upper and lower surface for limiting thickness, and The substrate includes the valve guide hole across the thickness of the substrate, wherein the receiving that is sized such that into of the valve guide hole is taken out Inhale the bar of valve.

7. retainer as claimed in claim 2, wherein the substrate further includes the upper and lower surface for limiting thickness, and The substrate includes receiving sleeve from the outwardly extending spring in the lower surface of the substrate.

8. retainer as claimed in claim 7, wherein the valve guide hole passes through the thickness of the substrate and the spring Sleeve extension is received, wherein the valve guide hole is sized such that into the bar for receiving the suction valve.

9. retainer as claimed in claim 8, wherein the valve guide hole includes the step on thickness, the step limits the First section of one diameter and the second section of second diameter, wherein the first diameter is less than the second diameter, and Wherein described valve guide hole includes valve guiding insertion piece of the configuration in second section.

10. retainer as claimed in claim 2, wherein the substrate includes the first side and the second side that limit width, wherein The width is less than the diameter of piston pump valve cover hole.

11. retainer as claimed in claim 2, wherein the substrate further includes the upper and lower surface for limiting thickness；

The first part includes fourth surface opposite with the third surface, the third surface and the 4th surface limit Determine first part's thickness；

The second part includes fourth surface opposite with the third surface, the third surface and the 4th surface limit Determine second part thickness；And

The thickness of wherein described first part and the second part is less than the thickness of the substrate.

12. a kind of retainer for being suitable for the bearing suction valve spring in pump, the retainer include：

Substrate has first end, second end, upper and lower surface；

First part extends outwardly from the first end of the substrate, and the first part includes first end and second end, and described the The first end of a part is close to the substrate, and the second end of the first part is included by first surface and the The first key that two surfaces limit, the first surface and the second surface are inclined outwardly, and are intersected to form more than 180 ° And less than 270 ° of exterior angle, the first part is spent with 45 (45) to the angle that 135 (135) are spent from the base The first end extension at bottom；

Second part extends outwardly from the second end of the substrate, and the second part includes first end and second end, and described the The first end of two parts is close to the substrate, and the second end of the second part is included by first surface and the The second key that two surfaces limit, the first surface and the second surface for limiting second key are inclined outwardly, and phase It hands over to form the exterior angle for being more than 180 ° and being less than 270 °, the second part is spent with 45 (45) to 135 (135) The angle of degree extends from the second end of the substrate；

Spring retaining sleeve is extended outwardly from the following table of the substrate；And

Valve guide hole extends, the valve across the upper and lower surface of the substrate and the spring retaining sleeve Guide hole is sized such that into the bar for receiving suction valve.

13. the retainer as described in any one of claim 2-12, wherein the pump is piston pump.

14. retainer as claimed in claim 2, wherein the third surface of the first part and the substrate is axially extending Surface is intersected, and the axially extending surface extends towards the upper surface of the substrate far from crosspoint；The upper surface and institute A part for axially extending surface is stated on the crosspoint；And

The third surface of wherein described second part is intersected with the axially extending surface of the substrate, the axially extending surface court Extend to the upper surface of the substrate far from crosspoint；A part for the upper surface and the axially extending surface is described On crosspoint.