CN109458325A - A kind of combination valve applied to double action for reciprocating pump - Google Patents
A kind of combination valve applied to double action for reciprocating pump Download PDFInfo
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- CN109458325A CN109458325A CN201910008397.1A CN201910008397A CN109458325A CN 109458325 A CN109458325 A CN 109458325A CN 201910008397 A CN201910008397 A CN 201910008397A CN 109458325 A CN109458325 A CN 109458325A
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- valve
- reciprocating pump
- valve seat
- combination
- seat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
- F04B53/109—Valves; Arrangement of valves inlet and outlet valve forming one unit
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The present invention relates to a kind of combination valves applied to double action for reciprocating pump, including valve seat and share the liquid feed valve and tapping valve of the valve seat, the combination valve is used to be arranged in one end of the pistons work chamber of reciprocating pump, the liquid feed valve and tapping valve are located at the both ends of the valve seat, the valve seat be equipped with axially through for the piston rod pass through first perforation, it is described first perforation in be equipped with for and the piston rod packing cooperation letter body assembly.The combination valve is compact-sized, assembly is simple, it applies on double action for reciprocating pump with can be convenient, it is located at the pistons work chamber of the pump housing on same axis with valve passage is combined, it thus effectively prevents in the prior art because two channels intersect vertically the problem of stress concentration of appearance, it is less prone to the cracking of the pump housing, will not be because of extra Iinvalid volume caused by there are chiasma interference, thus efficiently gas-liquid mixture fluid can be conveyed.
Description
Technical field
The present invention relates to reciprocal pump technical field more particularly to a kind of combination valves applied to double action for reciprocating pump.
Background technique
Reciprocating pump can be divided into single-acting pump and double-acting pump, and so-called single-acting refers to that the piston (plunger) of reciprocating pump is moving ahead
Work done in the process, not work done in return stroke, double acting refers to the piston of reciprocating pump during forward and return stroke is equal
It can work done.Double action for reciprocating pump can often get up power end in the non-power utilization of mechanical energy of backhaul, make it in backhaul
When also carry out work done so that the design volume of the power end of similar match power can it is small one gear, wherein set in fluid end
In meter, the valve group of double action for reciprocating pump than single-acting reciprocating pump valve group more than one times, the valve group of reciprocating pump can be upper and lower valve
Structure, or combination valve arrangement, wherein the structure of combination valve may refer to the (authorization application No. is 201610125204.7
Notification number is CN105626509B) Chinese invention patent " a kind of plunger pump valve group "；The valve of the fluid end of existing reciprocating pump
Group is vertical structure, and correspondingly, the working condition of valve group is vertical operation, and such as application No. is CN201120185986.6 (to award
Power notification number discloses " the reciprocating three cylinders double acting gas of this structure for the Chinese utility model patent of CN202100406U)
Liquid multiphase transport pump ".
There is also certain deficiencies for this reciprocating pump using vertical valve group and the fluid end of piston (plunger) cooperation: first
First, since the operation channel of the plunger of reciprocating pump and the valve chamber channel of valve group are arranged at right angle, the position of two channels intersection is easy
Form the high-voltage alternating region more concentrated of stress, this reciprocating pump in trandfer fluid, pressure rating no more than
Otherwise 25MPa just will appear the cracking risk of the pump housing；Secondly, this reciprocating pump hydraulic-end with vertical valve block structure, due to
Between piston channel and valve chamber channel there are chiasma interference and when it being caused to be used to convey gas-liquid mixture fluid, Iinvalid volume
Region is larger, thus will appear gas lock and lower the operational efficiency of pump, and there are problems that vibration noise becomes larger, it is difficult to realize pair
The efficient conveying of gas-liquid medium.Therefore, how to avoid reciprocating pump because of the stress collection of piston channel and the intersection location in valve chamber channel
In and cause the pump housing crack and how by reduce reciprocating pump Iinvalid volume realize gas-liquid mixture fluid efficiently mix it is defeated at
The problem of for those skilled in the art's urgent need to resolve.
Summary of the invention
The technical problem to be solved by the invention for the present situation of prior art is to provide a kind of compact-sized, assembly sides
Just novel compositions valve, the combination valve can be convenient be applied to double action for reciprocating pump in, and can solve because pistons work chamber with
The stress for combining the intersection location of valve passage is concentrated and leads to pump housing problem of Cracking and effectively reduce the Iinvalid volume of reciprocating pump
Realize that efficiently mixing for gas-liquid mixture fluid is defeated.
The technical scheme of the invention to solve the technical problem is: a kind of combination applied to double action for reciprocating pump
Valve including valve seat and shares the liquid feed valve and tapping valve of the valve seat, which is used to be arranged in the piston work of reciprocating pump
Make in the combination valve passage of one end of chamber, the liquid feed valve and tapping valve are located at the both ends of the valve seat, on the valve seat
Equipped with axially through for piston rod pass through first perforation, it is described first perforation in be equipped with for and the piston rod packing
The letter body assembly of cooperation.
In order to realize that piston rod moves back and forth in the valve seat of combination valve and guarantee leakproofness between the two, the letter body
Assembly includes cooperating in first perforation and the letter body that moves back and forth for piston rod and to be assemblied in the letter intracorporal close
Sealing assembly.
As an improvement, the letter body is structure as a whole with the valve seat.Such structure setting, reduces number of parts,
It assembles more convenient, wherein by the combination valve when being assembled on the pump housing of reciprocating pump, it is only necessary to which seal assembly assembly exists
Between piston rod and the inner cavity of valve seat, the assembling process of letter body is eliminated, and need not also be set between letter body and valve seat
Sealing element is set, production cost is effectively reduced.
In order to which seal assembly to be fitted securely in the inner hole of the letter body, the inner hole wall of the letter body, which is equipped with, to be used for
The positioning step of axial limiting is carried out to seal assembly, the letter body assembly further includes described fixed for seal assembly to be pressed on
Compression ring on the step of position.
As an improvement, the both ends of the surface of the valve seat are respectively feed liquor plane and drain plane, the valve seat is equipped with feed liquor
Duct and drain duct, the feed liquor duct penetrate through the outside wall surface and the feed liquor plane of the valve seat, and the drain duct is passed through
Lead to the feed liquor plane and the drain plane.Wherein, when piston promotes, fluid media (medium) can be by the feed liquor duct to piston
Feed liquor in working chamber, when piston return, the intracavitary fluid media (medium) of pistons work can be flowed out by drain duct.
In order to increase the dose of fluid delivered of combination valve, improve transfer efficiency, the feed liquor duct on the valve seat have it is multiple, and
Axial line around the valve seat is uniformly distributed, and the outer wall of the valve seat is equipped with first annular groove, each feed liquor duct
Import is set on the bottom surface of the first annular groove；Drain duct on the valve seat have it is multiple, and around the valve seat
Axial line is uniformly distributed.
As an improvement, the liquid feed valve of the combination valve further includes the first valve plate, the first spring and in addition to shared valve seat
One spring base, first spring are set between first valve plate and first spring base, so that first valve plate is living
Dynamic cooperation is equipped with for the piston rod on the exit in the feed liquor duct, first valve plate and first spring base
The relief hole passed through.
As an improvement, the tapping valve of the combination valve further includes the second valve plate, second spring and in addition to shared valve seat
Two spring bases, the second spring seat are connected on the valve seat by screw rod, and the second spring is set to second valve plate
Between the second spring seat, so that the second valve plate activity cooperates at the port in the drain duct, described second
The relief hole passed through for the piston rod is equipped on valve plate and the second spring seat.
In order to guarantee that liquid feed valve can be unlatched and closed smoothly, there is second annular groove in the feed liquor plane, it is described
The import in feed liquor duct and the import in drain duct are set on the bottom surface of the second annular groove, the second annular groove
Interior edge also there is the guide part being axially arranged, first valve plate is movably set on the guide part, and with it is described
The sealing bottom surface of second annular groove cooperates, and the import pair with the drain duct on the valve seat is additionally provided on first valve plate
The hole for back flow answered.
In order to guarantee the leakproofness between the combination valve and the pump housing being assemblied on the pump housing, it is additionally provided on the outer wall of the valve seat
Two are used to place the annular seal groove of sealing element, and two annular seal grooves are located at the two of the first annular groove
Side.
Compared with prior art, advantages of the present invention:, can be with firstly, combination valve is compact-sized, easy to assembly in the present invention
It is advantageously applied on double action for reciprocating pump, connect the piston rod (or piston) of reciprocating pump can directly through the combination valve reciprocal
The power end of pump, and then realize the purpose that reciprocating pump can do work in progradation and reseting procedure；Secondly as the combination
Valve can be directly for piston rod directly through thus reciprocating pump can be with work by the valve chamber channel for being used to place the combination valve
Plug working chamber is coaxially disposed, even if the direction of action of the combination valve is consistent with the direction of motion of piston, so as to effective
It avoids being less prone to the cracking of the pump housing because two channels intersect vertically the problem of stress concentration of appearance in the prior art, it can be to pressure
High-pressure fluid of the power grade higher than 25MPa is conveyed；On the other hand, which is arranged in the pistons work chamber of reciprocating pump
One end keeps combination valve and piston component more compact in the intracorporal assembly of pump, avoids valve chamber channel in the prior art and piston work
Make because of extra Iinvalid volume caused by there are chiasma interference between chamber, thus the reciprocating pump for assembling the combination valve is mixed in conveying gas-liquid
Be not in gas lock and vibration problem when the body of interflow, gas-liquid mixture fluid can efficiently be conveyed.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the combination valve of the embodiment of the present invention；
Fig. 2 be the embodiment of the present invention combination valve structural schematic diagram, wherein be not shown letter body assembly seal assembly and
Compression ring；
Fig. 3 is the structural schematic diagram of the combination valve of the embodiment of the present invention being assemblied on double action for reciprocating pump；
Fig. 4 is the right view of reciprocating pump in the embodiment of the present invention；
Fig. 5 is the structural schematic diagram of the main combination valve of reciprocating pump in the embodiment of the present invention；
Fig. 6 is the right view of the pump housing of reciprocating pump in the embodiment of the present invention；
Fig. 7 is sectional view along A-A in Fig. 6；
Fig. 8 is the top view of the pump housing of reciprocating pump in the embodiment of the present invention；
Fig. 9 is the structural schematic diagram that the feed liquor pipeline of reciprocating pump in the embodiment of the present invention is connect with total incoming-stream manifold.
Specific embodiment
The present invention will be described in further detail below with reference to the embodiments of the drawings.
Referring to Fig. 1-Fig. 9, a kind of combination valve applied to double action for reciprocating pump, for the pistons work of reciprocating pump to be arranged in
In the combination valve passage 12 of one end of chamber 11, including valve seat 71 and the liquid feed valve 40 and tapping valve 50 of the valve seat 71, feed liquor are shared
Valve 40 and tapping valve 50 are located at the both ends of valve seat 71, wherein after the combination valve is fitted into combination valve passage 12, liquid feed valve
40 are located towards the side of pistons work chamber 11, and tapping valve 50 is located at backwards to the side of pistons work chamber 11, are detailed in Fig. 3；Valve seat
71 be equipped with axially through for piston rod 21 pass through first perforation 700, first perforation 700 in be equipped with for and piston it is close
Seal the letter body assembly 72 of cooperation.In order to realize that piston rod 21 moves back and forth in the valve seat 71 of combination valve and guarantees between the two
Leakproofness, in the present embodiment, letter body assembly 72 include cooperation in the first perforation 700 and for the letter of the reciprocating motion of piston rod 21
Body and it is assemblied in the intracorporal seal assembly 720 of letter, in order to which seal assembly 720 to be fitted securely in the inner hole of letter body, letter
The inner hole wall of body is equipped with the positioning step 701 for carrying out axial limiting to seal assembly 720, and letter body assembly 72 further includes using
In the compression ring 73 being pressed on seal assembly 720 on positioning step 701, wherein seal assembly 720 include airtight and watertight padding 721,
Guide sleeve 722, wherein airtight and watertight padding 721 can realize piston rod 21 and letter body using the different filler of such as V-arrangement, U-shaped, rectangle
Between reciprocation sealing, be detailed in Fig. 1 and Fig. 2；Again specifically, in the present embodiment, letter body is structure as a whole with valve seat 71, to reduce
Number of parts, makes to assemble more convenient, wherein when on the pump housing 10 for being assembled into reciprocating pump by the combination valve, it is only necessary to
By the assembly of seal assembly 720 between piston rod 21 and the inner cavity of valve seat 71, the assembling process of letter body is eliminated, and
Sealing element need not be set between letter body and valve seat 71, effectively reduce production cost.
Combination valve in the present embodiment is applied on double action for reciprocating pump in which can be convenient, specifically, referring to Fig. 3, double cropping
With reciprocating pump include the pump housing 10, piston component 20 and be respectively arranged on the pump housing 10 front end main combination valve 60 and set on rear end
Secondary combination valve 70, in the pump housing 10 equipped with pistons work chamber 11 and with the pistons work chamber 11 is connected two combine valve passage
12, two combination valve passages 12 are located at the both ends of pistons work chamber 11, and piston component 20 is movably disposed in piston work
Make in chamber 11, main combination valve 60 and secondary combination valve 70 are respectively arranged in two combination valve passages 12, wherein piston component 20 includes
The piston core 22 of piston rod 21 and the inner end set on piston rod 21, piston core 22 are fixed on the end of piston rod 21 by screw rod
Portion is equipped with the cylinder sleeve 23 for accommodating piston component 20 in pistons work chamber 11, is set in the outer circle of piston core 22 corresponding close
Sealing and guide sleeve are cooperated with realizing to seal with the inner wall of cylinder sleeve 23, it will, of course, be appreciated that, the cylinder sleeve in the present embodiment
23 and piston component 20 also could alternatively be corresponding letter body and plunger, that is, form plunger reciprocating pump；In addition, with each combination valve
Offer the feed pathway 13 being connected to the admission chamber 400 of liquid feed valve 40 on the side wall of the corresponding pump housing 10, and with tapping valve 50
The apocenosis passage 14 that is connected to of exhaust chamber 500, wherein secondary combination valve 70 can using the combination valve arrangement in the present embodiment, with
The power end of the secondary combination valve 70 connection reciprocating pump is passed through for piston rod 21, main combination valve 60 can be using conventional in the prior art
Combination valve arrangement.Using the reciprocating pump of the combination valve in the present embodiment, combining valve passage 12 and the pistons work chamber 11 can be with
It being coaxially disposed, that is, the axial line of pistons work chamber 11 is located along the same line with the axial line for combining valve passage 12, thus
It effectively avoids being less prone to the cracking of the pump housing 10, energy because two channels intersect vertically the problem of stress concentration of appearance in the prior art
Enough high-pressure fluids to pressure rating higher than 25MPa convey；On the other hand, which is arranged in the piston work of reciprocating pump
The one end for making chamber 11 keeps combination valve and assembly of the piston component 20 in the pump housing 10 more compact, avoids combining in the prior art
Because of extra Iinvalid volume caused by there are chiasma interference between valve passage 12 and pistons work chamber 11, thus assemble the combination valve
Reciprocating pump is not in gas lock and vibration problem when conveying gas-liquid mixture fluid, can be carried out to gas-liquid mixture fluid efficiently defeated
It send.
Referring to 1 and Fig. 2, the both ends of the surface of the valve seat 71 of the combination valve of the present embodiment are respectively feed liquor plane and drain plane,
Valve seat 71 is equipped with feed liquor duct 91 and drain duct 92, and feed liquor duct 91 penetrates through the outside wall surface and feed liquor plane of valve seat 71, row
Fluid apertures road 92 penetrates through feed liquor plane and drain plane, wherein when piston promotes, fluid media (medium) can by the feed liquor duct 91 to
Feed liquor in pistons work chamber 11, when backward stroke of the piston, the fluid media (medium) in pistons work chamber 11 can be flowed out by drain duct 92.
In order to increase the dose of fluid delivered of combination valve, improve transfer efficiency, the feed liquor duct 91 on valve seat 71 have it is multiple, and around valve seat 71
Axial line be uniformly distributed, the outer wall of valve seat 71 is equipped with first annular groove 93, and the import in each feed liquor duct 91 is set to the
On the bottom surface of one annular groove 93；Drain duct 92 on valve seat 71 has multiple, and is uniformly distributed around the axial line of valve seat 71, then
Specifically, feed liquor duct 91 is equal with the number in drain duct 92, and partial region and the drain duct 92 in feed liquor duct 91 are located at
On same annular surface, and feed liquor duct 91 and drain duct 92 successively arranged for interval.
With continued reference to Fig. 1 and Fig. 2, the liquid feed valve 40 of the combination valve in the present embodiment further includes in addition to shared valve seat 71
One valve plate 41, the first spring 42 and the first spring base 43, the first spring 42 are set between the first valve plate 41 and the first spring base 43,
So that the 41 activity cooperation of the first valve plate realizes the open and close of liquid feed valve 40, the first valve plate in the exit in feed liquor duct 91
41 and first the relief hole passed through for piston rod 21 is equipped on spring base 43, specifically, the first spring base 43 is that an annular is fixed
Position set, when the first spring base 43 be installed to combination valve passage 12 in when, in along in the cylinder sleeve 23 in pistons work chamber 11
Wall surface flushes, and cylinder sleeve 23 is pressed in pistons work chamber 11 just, and similarly, the tapping valve 50 of combination valve is except shared valve
It further include the second valve plate 51, second spring 52 and second spring seat 53 outside seat 71, second spring seat 53 is connected to by screw rod 83
On valve seat 71, second spring 52 is set between the second valve plate 51 and second spring seat 53, so that the axial activity of the second valve plate 51 is matched
It closes at the port in drain duct 92, to realize the open and close of tapping valve 50, on the second valve plate 51 and second spring seat 53
It is equipped with the relief hole passed through for piston rod 21, specifically, in order to avoid each component of tapping valve 50 is contacted with piston rod 21, this
There is in the drain plane of combination valve the axially outwardly extending annular isolation from the outer of the first perforation along valve seat in embodiment
Set, the second valve plate 51 and second spring seat 53 be set in the annular isolation and put on, then specifically, and the inner end of screw rod 83 passes through the
One screw thread 832 is tightened on corresponding valve seat 71, and the outer end of screw rod 83 passes through the second screw thread 831 and jam nut 831 for second
Spring base 53 is fixed.Have the second annular recessed in order to guarantee that liquid feed valve 40 can be unlatched and closed smoothly, in feed liquor plane
Slot 94, the import in feed liquor duct 91 and the import in drain duct 92 are set on the bottom surface of second annular groove 94, the second annular
The interior edge of groove 94 also has the guide part 95 being axially arranged, and the first valve plate 41 is movably set on guide part 95, and with
The sealing bottom surface of second annular groove 94 cooperates, and the import pair with the drain duct 92 on valve seat 71 is additionally provided on the first valve plate 41
The hole for back flow 410 answered.In order to guarantee the leakproofness between the combination valve being assemblied on the pump housing 10 and the pump housing 10, the outer wall of valve seat 71
On be additionally provided with two for placing the annular seal grooves 17 of sealing element, two annular seal grooves 17 are located at first annular groove
93 two sides.
The fit structure of the pump housing 10 of combination valve and double action for reciprocating pump and assembly in the present embodiment in order to better understand
Process is illustrated reciprocating pump dependency structure now, referring to Fig. 3, in order to which each combination valve to be fixed on to the pump housing of reciprocating pump
10 both ends, so that piston component 20 is consistent with the direction of action of two combination valves, two of the pump housing 10 combine the interior of valve passages 12
Diameter is all larger than the internal diameter of pistons work chamber 11, to form the first shoulder for being limited to main combination valve 60 in the axial direction
15 and the second shoulder 16 for being limited to secondary combination valve 70, it is detailed in Fig. 7, wherein main combination valve 60 can be closed by lid exist
The first cock 81 and first shoulder 15 of combining the aperture position of valve passage 12 are fixed on the front end of the pump housing 10, and secondary combination valve 70 is logical
The rear end that lid conjunction is fixed on the pump housing 10 in the second cock 82 of the aperture position of another combination valve passage 12 and the second shoulder 16 is crossed,
Wherein, the first cock 81 and the second cock 82 are fixed on the front and back end wall of the pump housing 10 by screw thread, specifically, in order to make to lead
Combination valve 60 and secondary combination valve 70 are more firmly set in each combination valve passage 12, and the middle part of the valve seat 61 of main combination valve 60 has
The inside of the location hole 600 axially opened up, the first cock 81 has the compatible positioning column 810 of above-mentioned location hole 600, piston rod
21 pass through the power end of secondary combination valve 70 and the second cock 82 connection reciprocating pump.It is envisioned that above-mentioned double action for reciprocating pump
Main combination valve 60 can also be only that on the valve seat 61 of main combination valve 60 not using the combination valve arrangement in the present embodiment, difference
The first perforation 700 passed through for piston rod 21 must be opened up, also letter body assembly 72 need not be set in the first perforation 700, and in master
The middle part of the valve seat 61 of combination valve 60 open up can location hole 600 compatible with the positioning column 810 of the first cock 81,
It is detailed in Fig. 3 and Fig. 5.
In addition, being also connected with the feed liquor pipeline of the feed pathway 13 to be connected on the pump housing 10 on the pump housing 10 referring to Fig. 3
84, and the tapping line 85 to be connected to apocenosis passage 14, feed liquor pipeline 84 be located at the top of the pump housing 10, tapping line 85 is located at
The lower section of the pump housing 10, specifically, feed liquor pipeline 84 have two, respectively through flanged joint in the upper plane of the pump housing 10 and with two
A feed pathway 13 is connected, and similarly, tapping line 85 has two, is being set to the lower flat of the pump housing 10 by flanged joint respectively
It is connected on face and with two apocenosis passages 14；Referring to Fig. 3-Fig. 9, the pump housing 10 can be equipped with multiple groups piston side by side in the horizontal direction
Working chamber 11 and combination valve passage 12 (illustrate to be triplex reciprocating pump, but the reciprocating pump is not limited in the present embodiment
Three cylinders can be designed to two cylinders or other multi-cylinders according to actual needs), correspondingly, feed liquor pipeline 84 and tapping line 85 are equal
Have a multiple groups, be connected between each group feed liquor pipeline 84 by total incoming-stream manifold 840, total 840 each group tapping line 85 of incoming-stream manifold it
Between pass through total drain manifold 850 and be connected to, wherein the rear and front end of total incoming-stream manifold 840 and total drain manifold 850 may be provided with
Blind flange 841,851 and logical flange 842,852 for connecting exterior tubing lead to flange 842,852 and blind flange 841,851
It can be interchangeable according to actual needs when in use, wherein Fig. 8 shows the structural schematic diagram of the upper plane of the pump housing 10, pump
The structure of the lower plane of body 10 is identical with this, and Fig. 9 shows the structural representation that total incoming-stream manifold 840 is connect with each feed liquor pipeline
Figure, the structure that total drain manifold 850 is connect with each tapping line 85 are identical with this.
The piston component 20 of reciprocating pump moves back and forth Shi Junke work done under the driving of power end, and detailed process is as follows: when
When piston component 20 promotes, the liquid feed valve 40 of main combination valve 60 is closed, and tapping valve 50 is opened, wherein in pistons work chamber 11
Fluid media (medium) can be output in tapping line 85 by the exhaust chamber 500 of main combination valve 60 and the apocenosis passage 14 of the pump housing 10, together
When, the liquid feed valve 40 of secondary combination valve 70 is opened, and tapping valve 50 is closed, and fluid media (medium) can be successively through the pump housing 10 in feed liquor pipeline 84
The sucking of the admission chamber 400 of feed pathway 13 and secondary combination valve 70, the pistons work chamber 11 full of the pump housing 10；When piston component 20 returns
Cheng Shi, the fluid medium pressure in pistons work chamber 11 increase, and the tapping valve 50 of secondary combination valve 70 is opened, and liquid feed valve 40 is closed,
Wherein fluid media (medium) can be output to tapping line 85 by the exhaust chamber 500 of secondary combination valve 70 and the apocenosis passage 14 of the pump housing 10
In, meanwhile, the tapping valve 50 of main combination valve 60 is closed, and liquid feed valve 40 is opened, and the fluid media (medium) in feed liquor pipeline 84 can be passed through successively
The feed pathway 13 of the pump housing 10 and the admission chamber 400 of main combination valve 60 suck, and the pistons work chamber 11 full of the pump housing 10 completes one
It is a to be recycled into drain.
Combination valve in the present embodiment have the advantages that it is multiple, firstly, the combination valve is compact-sized, easy to assembly, Ke Yifang
Just it applies on above-mentioned double action for reciprocating pump, connect the piston rod 21 (plunger) of reciprocating pump can directly through the combination valve past
The power end pumped again, and then realize the purpose that reciprocating pump can do work in progradation and reseting procedure；Secondly as should
Combination valve can be directly for piston rod directly through thus logical for placing the combination valve of the combination valve on the pump housing 10 of reciprocating pump
Road 12 can be coaxially disposed with pistons work chamber 11, even if the direction of action of the combination valve and the direction of motion of piston one
It causes, so as to effectively avoid being less prone to the pump housing because two channels intersect vertically the problem of stress concentration of appearance in the prior art
10 cracking, the high-pressure fluid that can be higher than 25MPa to pressure rating convey；On the other hand, which is arranged past
One end of the pistons work chamber 11 pumped again keeps the assembly of combination valve and piston in the pump housing 10 more compact, avoids the prior art
Because of extra Iinvalid volume caused by there are chiasma interference between middle valve chamber channel and pistons work chamber 11, thus assemble the combination valve
Reciprocating pump be not in gas lock and vibration problem when conveying gas-liquid mixture fluid, gas-liquid mixture fluid can be carried out efficient
Conveying.
Claims (10)
1. a kind of combination valve applied to double action for reciprocating pump, including valve seat (71) and the liquid feed valve (40) of the valve seat (71) is shared
With tapping valve (50), it is characterised in that: the combination valve is arranged in the combination of one end of the pistons work chamber (11) of reciprocating pump
In valve passage (12), the liquid feed valve (40) and tapping valve (50) are located at the both ends of the valve seat (71), the valve seat
(71) be equipped with axially through for piston rod (21) pass through first perforation (700), it is described first perforation (700) in is equipped with
For the letter body assembly (72) with the piston rod (21) sealing cooperation.
2. the combination valve according to claim 1 applied to double action for reciprocating pump, it is characterised in that: the letter body assembly
It (72) include cooperating interior in first perforation (700) and letter body for piston rod (21) reciprocating motion and being assemblied in the letter
Intracorporal seal assembly (720).
3. the combination valve according to claim 2 applied to double action for reciprocating pump, it is characterised in that: the letter body with it is described
Valve seat (71) is structure as a whole.
4. the combination valve according to claim 2 applied to double action for reciprocating pump, it is characterised in that: the inner hole of the letter body
Wall is equipped with the positioning step (701) for seal assembly (720) to be carried out with axial limiting, and the letter body assembly (72) further includes
Compression ring (73) for being pressed on seal assembly (720) on the positioning step (701).
5. the combination valve according to claim 1-4 applied to double action for reciprocating pump, it is characterised in that: the valve
The both ends of the surface of seat (71) are respectively feed liquor plane and drain plane, and the valve seat (71) is equipped with feed liquor duct (91) and drainage hole
Road (92), the feed liquor duct (91) penetrate through the outside wall surface and the feed liquor plane of the valve seat (71), the drain duct
(92) the feed liquor plane and the drain plane are penetrated through.
6. the combination valve according to claim 5 applied to double action for reciprocating pump, it is characterised in that: on the valve seat (71)
Feed liquor duct (91) have multiple, and be uniformly distributed around the axial line of the valve seat (71), set on the outer wall of the valve seat (71)
Have first annular groove (93), the import of each feed liquor duct (91) is set to the bottom surface of the first annular groove (93)
On；
Drain duct (92) on the valve seat (71) has multiple, and is uniformly distributed around the axial line of the valve seat (71).
7. the combination valve according to claim 6 applied to double action for reciprocating pump, it is characterised in that: the combination valve into
Liquid valve (40) further includes the first valve plate (41), the first spring (42) and the first spring base (43), institute in addition to shared valve seat (71)
It states the first spring (42) to be set between first valve plate (41) and first spring base (43), so that first valve plate
(41) activity cooperation is in the exit of the feed liquor duct (91)；
The relief hole passed through for the piston rod (21) is equipped on first valve plate (41) and first spring base (43).
8. the combination valve according to claim 6 applied to double action for reciprocating pump, it is characterised in that: the row of the combination valve
Liquid valve (50) further includes the second valve plate (51), second spring (52) and second spring seat (53), institute in addition to shared valve seat (71)
It states second spring seat (53) to be connected on the valve seat (71) by screw rod (83), the second spring (52) is set to described second
Between valve plate (51) and the second spring seat (53), so that second valve plate (51) activity cooperation is in the drain duct
(92) at port；
The relief hole passed through for the piston rod (21) is equipped on second valve plate (51) and the second spring seat (53).
9. the combination valve according to claim 7 applied to double action for reciprocating pump, it is characterised in that: in the feed liquor plane
With second annular groove (94), the import of the feed liquor duct (91) and the import of drain duct (92) are set to described second
On the bottom surface of annular groove (94), the interior edge of the second annular groove (94) also has the guide part (95) being axially arranged, institute
It states the first valve plate (41) to be movably set on the guide part (95), and close with the bottom surface of the second annular groove (94)
Envelope cooperates, and corresponding time liquid of import with the drain duct (92) on the valve seat (71) is additionally provided on first valve plate (41)
Hole (410).
10. the combination valve according to claim 6 applied to double action for reciprocating pump, it is characterised in that: the valve seat (71)
Outer wall on be additionally provided with two for placing the annular seal grooves (17) of sealing element, two annular seal grooves (17) are located at institute
State the two sides of first annular groove (93).
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| CN201910008397.1A CN109458325B (en) | 2019-01-04 | 2019-01-04 | Combined valve applied to double-acting reciprocating pump |
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| CN201910008397.1A CN109458325B (en) | 2019-01-04 | 2019-01-04 | Combined valve applied to double-acting reciprocating pump |
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| CN109458325B CN109458325B (en) | 2023-09-19 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109854476A (en) * | 2019-03-28 | 2019-06-07 | 宁波合力机泵股份有限公司 | A kind of dynamic air inlet liquid conveying device |
| CN113586383A (en) * | 2021-09-29 | 2021-11-02 | 宁波合力机泵股份有限公司 | Horizontal two-section compression mixed transportation pump hydraulic end |
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| CN113586383A (en) * | 2021-09-29 | 2021-11-02 | 宁波合力机泵股份有限公司 | Horizontal two-section compression mixed transportation pump hydraulic end |
| CN113586383B (en) * | 2021-09-29 | 2021-12-07 | 宁波合力机泵股份有限公司 | Horizontal two-section compression mixed transportation pump hydraulic end |
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| CN109458325B (en) | 2023-09-19 |
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