CN201661462U - Double-acting rotor piston type pressure limiting variable pump - Google Patents
Double-acting rotor piston type pressure limiting variable pump Download PDFInfo
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- CN201661462U CN201661462U CN2010200205314U CN201020020531U CN201661462U CN 201661462 U CN201661462 U CN 201661462U CN 2010200205314 U CN2010200205314 U CN 2010200205314U CN 201020020531 U CN201020020531 U CN 201020020531U CN 201661462 U CN201661462 U CN 201661462U
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- rotor
- pump
- piston
- pressure limiting
- pump head
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Abstract
The utility model relates to a double-acting rotor piston type pressure limiting variable pump, which comprises a pump case, a rotor component, an input shaft, a shaft end pump head, a regulation pump head and a regulation mechanism, wherein the rotor component is arranged in the pump case, and consists of a rotor, a piston and a shuttle block, the piston is arranged in a slide groove of the rotor, an oil window vertical to a slide groove for installing the piston is arranged on the rotor, the shuttle block is arranged in a slide groove arranged on the piston in the same direction as the oil window arranged on the rotor, and deviates from the rotation center of the rotor, both sides of the pump case are respectively provided with the shaft end pump head and the regulation pump head, the input shaft passes through the shaft end pump head and is concentrically connected with the rotor, and the regulation mechanism capable of regulating the linear eccentricity of the shuttle block and the rotor and limiting the maximum work pressure of the pump is arranged on the regulation pump head. The utility model has the advantages of simple structure, convenient manufacture, small work pressure pulsating movement, adjustable delivery capacity and safe liquid conveyance, and is applicable to the conveyance of media sensitive to stirring and shearing.
Description
Technical field
The utility model relates to change positive displacement fluid conveying machine, specifically a kind of double-action rotary piston formula pressure limiting variable displacement pump.
Background technique
In industries such as chemical industry, petrochemical industry, machinery, need to carry to stirring, shear sensitive medium, as in the asphalt slurry seal machine in road building machine field, need to carry emulsified pitch, the engagement circular-arc gear pump is carried in using mostly at present, but the pump of the type at work, and the rotation of the gear teeth very easily makes medium generation demulsifying phenomenon to stirring and the shearing that liquid stream causes, and makes medium usability variation.In addition, the type pump whenever turns around, and only finishes the single-acting circulation of an oil suction-oil extraction, and the pump discharge pressure pulsation is big.And pump delivery is definite value, can not adjust, and can not satisfy the demand and carry out the requirement of Flow-rate adjustment occasion.Pump itself is not with the pressure device for limiting, is prone to the too high situation of working pressure, causes inner member premature damage and leakage, influences working life.
The model utility content
The purpose of this utility model is at above-mentioned the deficiencies in the prior art, provide a kind of simple in structure, easily manufactured, pressure pulsation is little, the discharge capacity can regulate, with the double-action rotary piston formula pressure limiting variable displacement pump of safe pressure limiting device.
For solving the problems of the technologies described above, the utility model provides a kind of double-action rotary piston formula pressure limiting variable displacement pump, form by pump case, rotor part, input shaft, axle head pump head, adjustment pump head, regulating mechanism, be symmetrically arranged with the oil sucting cavity and the oil-discharging cavity of keeping apart mutually in the described pump case, and described pump case is provided with inlet port and the oil drain out that communicates with chamber separately; Described rotor part is installed on described pump case inwall with Spielpassung, described rotor part is made of rotor, piston, shuttle piece, described piston is installed in the sliding-groove of described rotor, have and install the perpendicular oily window of sliding-groove of described piston on the described rotor, described shuttle piece is installed in the sliding-groove of offering on the described piston consistent with the oily window direction of described rotor, described shuttle piece is provided with center hole, and described shuttle piece departs from the rotating center of described rotor; Described adjustment pump head is provided with the regulating mechanism that can be used for regulating the throw of eccentric of described shuttle piece and described rotor and limit the pump Maximum operating pressure.
Described axle head pump head and described adjustment pump head are installed on the both sides of described pump case respectively, and described input shaft passes described axle head pump head and is connected with described rotor is concentric.
Preferably, described regulating mechanism is made up of stationary axle, adjusting pin, connecting rod, guide rod, control plunger, adjusting handle, pressure limiting spring, pressure regulating screw, end cover.
Preferably, described pressure limiting spring is a pressure spring.
The utility model is simple in structure, and is easily manufactured, and the pressure pulsation when its unique double-action working principle makes pumped medium is little, Flow-rate adjustment is convenient and reliable, transfusion safety does not stir and shear action liquid, is particularly suitable for carrying stirring, shear sensitive medium.
Description of drawings
Fig. 1 is the overall structure exploded perspective view of the utility model double-action rotary piston formula pressure limiting variable displacement pump;
Fig. 2 is the rotor part exploded perspective view of the utility model double-action rotary piston formula pressure limiting variable displacement pump;
Fig. 3 is the plan view of the utility model double-action rotary piston formula pressure limiting variable displacement pump;
Fig. 4 is the A-A sectional view of Fig. 3;
Fig. 5 is the B-B sectional view of Fig. 3;
Fig. 6 is the adjustment pump head of the utility model double-action rotary piston formula pressure limiting variable displacement pump and the schematic representation of pump case junction plane;
Fig. 7 is the adjustment pump head view of the utility model double-action rotary piston formula pressure limiting variable displacement pump;
Fig. 8 is the C-C sectional view of Fig. 7;
Fig. 9 a-9i is the working procedure schematic representation of the utility model double-action rotary piston formula pressure limiting variable displacement pump;
Description of reference numerals:
The 1-pump case; The 2-rotor part; The 2-a-rotor;
The 2-b-piston; 2-c-shuttle piece; The 3-input shaft;
4-axle head pump head; 5-adjusts pump head; The 6-stationary axle;
The 7-adjusting pin; The 8-connecting rod; The 9-guide rod;
10-controls plunger; The 11-adjusting handle; 12-pressure limiting spring;
The 13-pressure regulating screw; The 14-end cover; The 15-oil sucting cavity;
The 16-oil-discharging cavity; The 17-inlet port; The 18-oil drain out;
19,20-sliding-groove; 21-is by window; The 22-center hole;
The 23-guide groove; 24-adjusts the chamber; 25-first through hole;
The 26-runner; 27-second through hole;
Embodiment
For above-mentioned purpose of the present utility model, feature and advantage can be become apparent more, the utility model is done further to describe in detail below in conjunction with the drawings and specific embodiments.
Referring to Fig. 1-Fig. 4, the utility model double-action rotary piston formula pressure limiting variable displacement pump mainly comprises pump case 1, rotor part 2, input shaft 3, axle head pump head 4 and adjustment pump head 5.Pump case 1 inwall is equipped with the rotor part 2 with pump case 1 Spielpassung, rotor part 2 is made up of rotor 2-a, piston 2-b, shuttle piece 2-c, piston 2-b is installed in the sliding-groove 19 on the rotor 2-a, also have the oily window 21 perpendicular on the rotor 2-a with sliding-groove 19, shuttle piece 2-c is installed in the consistent sliding-groove 20 of oily window 21 directions that offer on the piston 2-b and rotor 2-a, shuttle piece 2-c is provided with center hole 22, and shuttle piece 2-c departs from the rotating center of rotor 2-a; Pump case 1 inwall is symmetrically arranged with the oil sucting cavity 15 and the oil-discharging cavity 16 of keeping apart mutually, and pump case 1 is provided with inlet port 17 that communicates with oil sucting cavity 15 and the oil drain out 18 that communicates with oil-discharging cavity 16; One side of pump case 1 is equipped with axle head pump head 4, is between the two that static seal connects, and input shaft 3 passes axle head pump head 4 and is connected with rotor 2-a, and 4 of input shaft 3 and axle head pump heads seal with filler or mechanical type; The opposite side of pump case 1 is equipped with adjusts pump head 5, and the two connects for static seal.
Referring to Fig. 5-Fig. 8, to adjust pump head 5 and be provided with regulating mechanism, regulating mechanism is made up of stationary axle 6, adjusting pin 7, connecting rod 8, guide rod 9, control plunger 10, adjusting handle 11, pressure limiting spring 12, pressure regulating screw 13, end cover 14.The stationary axle 6 of regulating mechanism is fixedly mounted on to be adjusted on the pump head 5, connecting rod 8 is installed on the stationary axle 6, and can be around stationary axle 6 swings, adjusting pin 7 is fixedly mounted on the connecting rod 8, and be inserted in the center hole 22 of shuttle piece 2-c, connecting rod 8 is provided with guide groove 23, the guide rod 9 that is fixedly mounted on the control plunger 10 is inserted in the guide groove 23, and can in guide groove 23, make slide relative, control plunger 10 is installed in the adjustment chamber 24 of adjusting pump head 5, and can make slide relative in adjusting chamber 24, and control plunger 10 is realized mechanical seal with adjustment chamber 24 by cooperating, the upper end of adjusting chamber 24 is provided with end cover 14, and on end cover 14 with the adjusting handle 11 that has been threaded; Lower end at control plunger 10, pressure limiting spring 12, end cover 14 and pressure regulating screw 13 are installed successively, and pressure regulating screw 13 and end cover 14 are to be threaded, and pressure limiting spring 12 is a pressure spring, turn pressure regulating screw 13 can be regulated the decrement of pressure limiting spring 12.Offer first through hole 25 that is connected with oil-discharging cavity 16 with the junction plane of adjusting pump head 5 on the pump case 1, junction plane with pump case 1 on the adjustment pump head 5 offers and the corresponding runner 26 in first through hole, 25 positions, at the end of runner 26, have and adjust second through hole 27 that chamber 24 is connected.
Its groundwork principle is as follows:
When motor or oil hydraulic motor by input shaft 3 input torques, when driving rotor part 2 rotations, because the rotating center of shuttle piece 2-c and rotor 2-a departs from, cause the rotating center of piston 2-b and rotor 2-a also to depart from, make piston 2-b in along with rotor 2-a rotation, also in sliding-groove 19, do straight reciprocating motion, in like manner, the rotating center of shuttle piece 2-c and rotor 2-a departs from, make shuttle piece 2-c in along with piston 2-b rotation, also in sliding-groove 20, do straight reciprocating motion, be that piston 2-b and shuttle piece 2-c are equivalent to plunger, sliding- groove 19,20 are equivalent to cylinder body, rotatablely moving of rotor 2-a is converted into piston 2-b and the plunger type motion of shuttle piece 2-c in sliding- groove 19 and 20 separately, rotor 2-a whenever circles, piston 2-b finishes once from oil sucting cavity 15 oil suctions and to the process of oil-discharging cavity 16 oil extractions, shuttle piece 2-c also finishes once via the oily window of being opened on the rotor 2-a 21 from oil sucting cavity 15 oil suctions and via the process of oily window 21 to oil-discharging cavity 16 oil extractions, thereby realizes the function of double-acting pump.Fig. 9 a-9i is the working procedure schematic representation of the utility model double-action rotary piston formula pressure limiting variable displacement pump.
Rotate adjusting handle 11, can swing around stationary axle 6 by guide rod 9 drivening rods 8 that are fixedly mounted on the control plunger 10, thereby make adjusting pin 7 also along with connecting rod 8 swings, realization is to the adjusting of shuttle piece 2-c and rotor 2-a throw of eccentric, simultaneously, piston 2-b is under the drive of shuttle piece 2-c, and the throw of eccentric of itself and rotor 2-a also changes, and reaches the purpose of regulating pump displacement.During pump work, pressure oil in the oil-discharging cavity 16 can enter the runner of being offered on the adjustment pump head 5 26 by opening at first through hole 25 on the pump case 1, and enter the adjustment chamber 24 of adjusting pump head 5, thereby control plunger 10 is produced downward active force via second through hole 27.When oil extraction pressure hour, fluid act on the power of control on the plunger 10 less than pressure limiting spring 12 owing to be subjected to pressure regulating screw 13 to compress the spring force that produces, control plunger 10 is in the peak that adjusting handle 11 is limited under the effect of spring force, the throw of eccentric of piston 2-b, shuttle piece 2-c and rotor 2-a is a maximum value, at this moment the pump delivery maximum; When oil extraction pressure raise, fluid acted on the trying hard to recommend moving control plunger 10 of control on the plunger 10 and overcomes spring force and move down, and throw of eccentric is dwindled thereupon, and pump delivery is also corresponding to be reduced.Turn pressure regulating screw 13 can make the decrement of pressure limiting spring 12 change, and sets up with the Maximum operating pressure to pump.Under the effect of regulating mechanism, can be implemented under the situation that limits maximum service pressure adjusting to pump displacement.
Double-action principle of the present utility model makes that the working pressure pulsation of pump is little, utilizes adjusting handle can regulate discharge capacity, is applicable to the occasion that need carry out Flow-rate adjustment, and is easy to operate; Maximum pressure during pump work can limit, transfusion safety.Compare with interior engagement circular-arc gear pump, the utility model does not have stirring and the shear action of the gear teeth to liquid when pumped medium, the oil suction and the oil extraction process that only have the plunger type linear reciprocation fortune merit of piston and shuttle piece, be particularly suitable for carrying emulsified pitch etc. to stir, shear sensitive medium.
More than disclosed only be preferred implementation of the present utility model; but the utility model is not limited thereto; any those skilled in the art can think do not have a creationary variation; and, all should drop within the protection domain of the present utility model not breaking away from any improvements and modifications of being done under the utility model principle prerequisite.
Claims (4)
1. a double-action rotary piston formula pressure limiting variable displacement pump comprises pump case, rotor part, input shaft, axle head pump head, adjusts pump head, regulating mechanism, it is characterized in that:
Be symmetrically arranged with the oil sucting cavity and the oil-discharging cavity of keeping apart mutually in the described pump case, and described pump case is provided with inlet port and the oil drain out that communicates with chamber separately;
Described rotor part is installed on described pump case inwall intermittently to cooperate, described rotor part is made of rotor, piston, shuttle piece, described piston is installed in the sliding-groove of described rotor, have and install the perpendicular oily window of sliding-groove of described piston on the described rotor, described shuttle piece is installed in the sliding-groove of offering on the described piston consistent with the oily window direction of described rotor, and described shuttle piece departs from the rotating center of described rotor;
Described adjustment pump head is provided with the regulating mechanism that is used to regulate the throw of eccentric of described shuttle piece and described rotor and limits the pump Maximum operating pressure.
2. a kind of double-action rotary piston formula pressure limiting variable displacement pump according to claim 1, it is characterized in that: described axle head pump head and described adjustment pump head are installed on the both sides of described pump case respectively, and described input shaft passes described axle head pump head and is connected with described rotor is concentric.
3. a kind of double-action rotary piston formula pressure limiting variable displacement pump according to claim 1 and 2, it is characterized in that: described regulating mechanism is made up of stationary axle, adjusting pin, connecting rod, guide rod, control plunger, adjusting handle, pressure limiting spring, pressure regulating screw, end cover.
4. a kind of double-action rotary piston formula pressure limiting variable displacement pump according to claim 3, it is characterized in that: described pressure limiting spring is a pressure spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200205314U CN201661462U (en) | 2010-01-21 | 2010-01-21 | Double-acting rotor piston type pressure limiting variable pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200205314U CN201661462U (en) | 2010-01-21 | 2010-01-21 | Double-acting rotor piston type pressure limiting variable pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201661462U true CN201661462U (en) | 2010-12-01 |
Family
ID=43231878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010200205314U Expired - Fee Related CN201661462U (en) | 2010-01-21 | 2010-01-21 | Double-acting rotor piston type pressure limiting variable pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201661462U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102477979A (en) * | 2011-06-30 | 2012-05-30 | 单云岭 | Sliding plate type single-double-action constant-variable pump or motor |
-
2010
- 2010-01-21 CN CN2010200205314U patent/CN201661462U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102477979A (en) * | 2011-06-30 | 2012-05-30 | 单云岭 | Sliding plate type single-double-action constant-variable pump or motor |
| CN102477979B (en) * | 2011-06-30 | 2014-10-08 | 单云岭 | Sliding plate type single-double-action constant-variable pump or motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| DD01 | Delivery of document by public notice |
Addressee: Hou Pengli Document name: Notification to Go Through Formalities of Registration |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101201 Termination date: 20120121 |