CN201865903U - Plunger reciprocating pump - Google Patents
Plunger reciprocating pump Download PDFInfo
- Publication number
- CN201865903U CN201865903U CN2010206337321U CN201020633732U CN201865903U CN 201865903 U CN201865903 U CN 201865903U CN 2010206337321 U CN2010206337321 U CN 2010206337321U CN 201020633732 U CN201020633732 U CN 201020633732U CN 201865903 U CN201865903 U CN 201865903U
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- plunger
- pump
- screw rod
- adjusting
- adjustment
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Abstract
The utility model relates to a plunger reciprocating pump which comprises a pump body, a plunger fit in a plunger hole of the pump body in a sliding way, and a suction valve group and a discharge valve group arranged in the pump body; and a pump chamber is formed among the plunger, the suction valve group and the discharge valve group in the pump body. The plunger reciprocating pump is characterized in that an adjusting plunger component which keeps the same central line with the plunger is arranged on the pump body; the adjusting plunger component comprises a sealing case body arranged on the pump body, an adjusting plunger, a screw rod, a spring and an adjusting handle, wherein the center of the sealing case body is provided with a hole with a valve seat; the hole is internally provided with a sealing component and a guide sealing sleeve; the external circumferential wall of the adjusting plunger is arranged in the sealing component and the sealing guide sleeve; the valve surface at the front end of the adjusting plunger is arranged in the pump chamber and is matched with the valve seat at the center of the sealing case body; the front end of the screw rod is provided with a boss; the middle part of the screw rod is a cylinder and the tail of the screw rod is provided with external threads. The plunger reciprocating pump has the advantages of large adjusting scope, high adjusting precision and convenience in adjustment, and is applicable to flow adjustment of multiple discharge holes of the multi-cylinder reciprocating pump.
Description
Technical field
A kind of plunger reciprocating pump of the utility model, especially a kind of plunger reciprocating pump that is applicable to the multioutlet adjustable flow of operating modes such as oil field injection.
Background technique
The plunger reciprocating pump is a kind of positive displacement pump, and the output flow of pump is relevant with plunger diameter, pump stroke and pump speed (per minute reciprocal time).By change the different-diameter plunger adjust pump output flow way since operation inconvenience almost do not use.Adjust the output flow of pump by the stroke that changes plunger, its degree of regulation is higher, but the power end complex structure only is used for metering pump usually.If the employing backflow is transferred flow then is wasted energy.At present, the most of employing of existing plunger reciprocating pump is to change pump speed to transfer flow.But this method is only applicable to the situation that a reciprocating pump has only an exhaust port.If the employing backflow is transferred flow then is wasted energy.For multi cylinderpump, if require the equal can regulate of the flow of each independent exhaust port, and regulation range is big, degree of regulation is high, easy to adjust, existing plunger reciprocating pump does not then reach above-mentioned requirements.
The model utility content
Technical problem to be solved in the utility model be at above-mentioned prior art provide a kind of regulation range of POF big, degree of regulation is high, easy to adjust and be applicable to all adjustable plunger reciprocating pump of flow of a plurality of exhaust ports of multi cylinderpump.
The utility model solves the problems of the technologies described above the technological scheme that is adopted: this plunger reciprocating pump, it comprises the pump housing, the plunger of sliding fit in pump housing plunger hole, be arranged on suction valve group and expulsion valve group in the pump housing, form pump chamber in the middle of the inherent plunger of the described pump housing, suction valve group and the drain group, it is characterized in that: the adjustment plunger assembly that keeps same center line with described plunger is installed on the described pump housing, and this adjustment plunger assembly comprises:
Be installed in the sealed letter body on the described pump housing, the center of sealing letter body is the hole of a band valve seat; Black box and pilot seal cover are installed in the hole;
Adjust plunger, this adjustment plunger is that a front end is stepped shape or taper valve face, the tapped hollow cylinder in rear end, its outer circle wall is installed in described black box and the sealing guide sleeve, the valve face of this adjustment plunger front end places in the pump chamber and cooperates with the valve seat at center on the described sealed letter body, thereby plays the spacing of plunger and the effect of closing the leakage of sealed letter body adjusted;
Screw rod, the front end of this screw rod have boss, the middle part is that cylindrical body, afterbody have outside thread, and the boss of this screw front end portion is installed in the hole of adjusting plunger back-end, and are encapsulated in the hole of adjusting plunger back-end with the clamping sleeve screw thread;
Spring, this spring one end is installed on the described clamping sleeve, and the spring the other end mounts elastically, and the afterbody of described screw rod passes described spring and described spring seat;
Adjust handle, this adjustment handle is a tapped shell-like handle, and its internal thread screws in the afterbody outside thread of screw rod.
When plunger was done to suck motion backward, the suction valve group was opened, and the expulsion valve group is closed.Liquid enters in the pump chamber from suction port, because it is very high that reciprocating pump mostly is its head pressure of high-pressure service pump, and it is less to withstand the spring rate of adjusting the plunger return in the mechanism, when plunger when previous crops is discharged motion, the suction valve group is closed, and fluid pressure rises, and fluid pressure is before reaching specified head pressure, the expulsion valve group that is arranged on the exhaust port is failure to actuate, and exhaust port is closed; After fluid pressure surpasses the back pressure of spring, adjust plunger and in the sealed letter body, produce motion backward, till moving to the valve face of adjusting plunger and the valve seat on the sealed letter body and closing, adjust plunger the travel forward swept volume that reduces and adjust the plunger swept volume that increases that moves backward and equate of the plunger of plunger reciprocating pump in this process that moves backward, pump chamber does not change, and liquid is not discharged; Plunger continues to move ahead, and remaining pump chamber reduces further raises fluid pressure, reached working pressure after, the expulsion valve group is opened, and remains this part flow and has been discharged to outside the pump housing.When plunger is made suction action once more, to adjust plunger and got back to the position that the screw rod boss limits by the spring top, the suction valve group is opened liquid is sucked.Enter next work cycle.The distance of handle adjustment from sealed letter body valve seat to adjustment plunger front end valve face adjusted in rotation, just changed the plunger effective stroke volume, thereby changed the discharge flow rate of plunger.
As improvement, described screw rod tail is equipped with a scale that is carved with scale and numerical value.This scale can accurately indicate the stroke of valve face plunger, and promptly flow is adjusted percentage.
Improve, between described spring housing and the described adjustment handle ball is installed, ball plays the role of positioning on the one hand, can reduce to adjust the rotational resistance of handle on the other hand, and can use the position of its adjustment of screw lock easily.
Described black box is a U RunddichtringO or V-seal spare or stuffing box packing.
Compared with prior art, advantage of the present utility model is:
1, flow is adjusted the precision height, and the distance of the valve seat of the valve face of adjusting plunger to the sealed letter body is exactly the flow adjustment amount.
2, the flow adjustment range is big, and flow output can be 0, and output quantity is 0-100%.The traffic requirement of each point when fully adapting to pump multiple spot water supply; Wherein but working flow is not 0 o'clock other some proper functioning also;
3, in the whole stroke, only there is micro-leakage at valve face plunger seal place before the valve face closure of valve face plunger, does not just leak after the valve face closure.Whole leakage rate is reduced, improved pump efficiency;
4, spring only provides the restoring force of adjusting plunger, and does not need the balance fluid pressure, and it is less that rigidity can be done; Can reduce the fatigue damage of spring, also when actual working pressure is not too high, still have adjustment capability;
5, flow is easy to adjust, directly perceived, can not shut down adjustment;
6, applicable to multi-cylinder plunger reciprocating pump, each cylinder all can be adjusted flow separately, separately output.A convenient pump is adjustable for a plurality of points and flow.Be particularly suitable for operating modes such as oil field injection.
Description of drawings
Fig. 1 is the structural representation (plunger is in the dead center position, back) of plunger reciprocating pump among the utility model embodiment;
Fig. 2 is the structural representation of plunger reciprocating pump among the utility model embodiment (plunger move ahead, adjust plunger in the closed position).
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
Plunger reciprocating pump as shown in Figure 1, it comprises the pump housing 2, is engaged in the plunger 1 in the pump housing plunger hole and is arranged on suction valve group 3 and expulsion valve group 4 in the pump housing 2, described suction valve group 3 of the utility model specific embodiment and expulsion valve group 4 are ball valve; The described pump housing 2 is provided with suction port 5 and exhaust port 6; Form pump chamber in the middle of the described pump housing 2 inherent plungers 1, suction valve group 3 and the expulsion valve group 4.
On the described pump housing 2 the adjustment plunger assembly is installed, described adjustment plunger assembly and main plunger keep same center line; It comprises sealed letter body 8, adjustment plunger 7, black box 9, pilot seal cover 10, clamping sleeve 11, screw rod 12, spring 14, spring housing 13, stop screw 15, ball 16, adjusts handle 17, scale 18.
Wherein sealed letter body 8 usefulness bolts are installed on the pump housing, and its center is the hole of a band valve seat, and black box 9 and pilot seal cover 10 is installed in the hole.The described black box of the utility model specific embodiment is the U-shaped seal ring.
Adjusting plunger 7 is that a front end has the taper valve face, and the tapped hollow garden of rearward end columniation structure body, its cylindrical are installed in black box 9 and the pilot seal cover 10, form the plunger seal pair; The taper valve face of this adjustment plunger front end places in the pump chamber and cooperates with valve seat on the sealed letter body 8, play dual parts spacing with close leakage.
The front end of described screw rod 12 has boss, the middle part is that cylindrical body, afterbody have outside thread; And the tailing screw flight end has the groove that prevents its rotation; The boss of this screw front end portion is installed in the hole of adjusting plunger 7 rear ends, and seals with the screw thread of clamping sleeve 11, and the boss of screw rod 12 can only be slided in adjusting plunger 7 endoporus.
Described spring 14 1 ends are installed on the clamping sleeve 11, and the other end is installed in the spring housing 13.
Described screw rod 12 afterbodys pass from spring 14 and spring housing 13, and described stop screw 15 1 ends screw in the other end in spring housing 13 screws and snap in that restriction screw rod 12 rotates in the groove of screw rod 12.
Described adjustment handle 17 is a tapped shell-like handle, and its internal thread is screwed into the male end of screw rod.Rotation is adjusted handle 17 and can be adjusted from sealed letter body valve seat to the distance of adjusting the plunger valve face.Just adjust an effective travel volume in the stroke, thereby adjust discharge flow rate.
When handle 17 adjustment flows were adjusted in rotation, screw rod 12 was not rotated by stop screw 15 restrictions and only does axial motion.
Described ball 16 is used on the one hand the location and adjusts handle 17 and only can rotate and do not do to move axially, and can reduce to adjust the rotational resistance of handle 17 on the other hand, and can use its adjusted position of screw lock easily.
When reciprocating pump was worked, when plunger 1 was done to suck motion backward, pump chamber increased, and pressure reduces, and suction valve group 3 is opened, and expulsion valve group 4 is closed.Medium enters in the pump chamber from suction port 5, because it is very high that reciprocating pump mostly is its head pressure of high-pressure service pump, and the spring rate of overhead-valve face plunger return is less, when plunger 1 when previous crops is discharged motion, pump chamber reduces, increased pressure, the suction valve group is closed, fluid pressure is before reaching specified head pressure, and the expulsion valve 4 that is arranged on the exhaust port is failure to actuate, and exhaust port 6 no liquid are discharged; After fluid pressure surpasses the back pressure of spring, adjust plunger 1 and produces motion backward, till moving to the valve face of adjusting plunger 7 and closing with the valve seat on the sealed letter body 8, adjustment plunger 7 moves backward, and swept volume does not have discharge in this process.Adjust plunger the travel forward swept volume that reduces and adjust plunger 7 swept volume that increases that move backward and equate that pump chamber does not change of plunger 1 in this process that moves backward, liquid is discharge not.Plunger 1 moves forward, and adjusts plunger 7 and can not move backward by the valve seat restriction on the sealed letter body 8; Remaining volume continues compression, and fluid pressure is further raise, reached working pressure after, expulsion valve group 4 is opened, and remains this part flow and has been discharged to outside the liquid cylinder by exhaust port 6.This moment, the position of each part was seen shown in the accompanying drawing 2.When plunger 1 is made suction action once more, adjust plunger 7 and got back to the position that screw rod 12 boss limit by spring 14 tops; Suction valve group 3 is opened and is made liquid suck pump chamber A.Enter next work cycle.
The valve face of adjusting plunger 7 front ends in the utility model is not limited to taper, also plane stepped shape, and suction valve group 3 and expulsion valve group 4 are not limited to ball valve, and it is cone valve, flap type (plane valve), deadweight valve or spring valve etc. also.Black box also is not limited to the U-shaped seal ring in the utility model, also patterns such as v-seal, packing seal, clearance seal.
Handle 17 is adjusted in turn closes extremely the valve face of valve face plunger 7 and the valve seat of sealed letter body 8 all the time, and adjustment amount was 0 when scale was shown as 100 positions, this cylinder flowing full amount output, and leakage rate is zero.When distance was adjusted into pump stroke between the valve seat of the valve face of valve face plunger 7 and sealed letter body 8, when scale was shown as 0 position, adjustment amount was 100%, and this cylinder flow is output as 0.When being adjusted into scale and being shown as 50 positions, adjustment amount is 50%, and this cylinder flow is output as 50%.Be that scale shows that numeral is exactly a flow output percentage.
Claims (4)
1. plunger reciprocating pump, it comprises the pump housing, the plunger of sliding fit in pump housing plunger hole, be arranged on suction valve group and expulsion valve group in the pump housing, form pump chamber in the middle of the inherent plunger of the described pump housing, suction valve group and the drain group, it is characterized in that: the adjustment plunger assembly that keeps same center line with described plunger is installed on the described pump housing, and this adjustment plunger assembly comprises:
Be installed in the sealed letter body on the described pump housing, the center of sealing letter body is the hole of a band valve seat; Black box and pilot seal cover are installed in the hole;
Adjust plunger, this adjustment plunger is that a front end is taper or stepped shape valve face, the tapped hollow cylinder in rear end, its outer circle wall is installed in described black box and the sealing guide sleeve, the valve face of this adjustment plunger front end places in the pump chamber and cooperates with the valve seat at center on the described sealed letter body, thereby plays the spacing of plunger and the effect of closing the leakage of sealed letter body adjusted;
Screw rod, the front end of this screw rod have boss, the middle part is that cylindrical body, afterbody have outside thread, and the boss of this screw front end portion is installed in the hole of adjusting plunger back-end, and are encapsulated in the hole of adjusting plunger back-end with the clamping sleeve screw thread;
Spring, this spring one end is installed on the described clamping sleeve, and the spring the other end mounts elastically, and the afterbody of described screw rod passes described spring and described spring seat;
Adjust handle, this adjustment handle is a tapped shell-like handle, and its internal thread screws in the afterbody outside thread of screw rod.
2. plunger reciprocating pump according to claim 1 is characterized in that: described screw rod tail is equipped with a scale that is carved with scale and numerical value.
3. plunger reciprocating pump according to claim 1 is characterized in that: between described spring housing and the described adjustment handle ball is installed.
4. plunger reciprocating pump according to claim 1 is characterized in that: described black box is a U RunddichtringO or V-seal spare or stuffing box packing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206337321U CN201865903U (en) | 2010-11-19 | 2010-11-19 | Plunger reciprocating pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206337321U CN201865903U (en) | 2010-11-19 | 2010-11-19 | Plunger reciprocating pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201865903U true CN201865903U (en) | 2011-06-15 |
Family
ID=44137059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206337321U Expired - Lifetime CN201865903U (en) | 2010-11-19 | 2010-11-19 | Plunger reciprocating pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201865903U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101994688A (en) * | 2010-11-19 | 2011-03-30 | 宁波合力机泵有限公司 | Plunger reciprocating pump |
| CN114658627A (en) * | 2022-03-31 | 2022-06-24 | 黄山君润油田装备制造有限公司 | Oil field cylinder-separating variable reciprocating type injection pump skid-mounted device |
-
2010
- 2010-11-19 CN CN2010206337321U patent/CN201865903U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101994688A (en) * | 2010-11-19 | 2011-03-30 | 宁波合力机泵有限公司 | Plunger reciprocating pump |
| CN101994688B (en) * | 2010-11-19 | 2012-06-06 | 宁波合力机泵有限公司 | Plunger reciprocating pump |
| CN114658627A (en) * | 2022-03-31 | 2022-06-24 | 黄山君润油田装备制造有限公司 | Oil field cylinder-separating variable reciprocating type injection pump skid-mounted device |
| CN114658627B (en) * | 2022-03-31 | 2024-05-07 | 黄山君润油田装备制造有限公司 | Skid-mounted device for oil field separate cylinder variable reciprocating type polymer injection pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110615 Effective date of abandoning: 20120606 |