CN111173733B

CN111173733B - Short-amplitude inner cycloid type pump

Info

Publication number: CN111173733B
Application number: CN202010017900.2A
Authority: CN
Inventors: 徐海英; 田昊
Original assignee: DAQING HUAYU PETROLEUM MACHINERY MANUFACTURING CO LTD
Current assignee: DAQING HUAYU PETROLEUM MACHINERY MANUFACTURING Co.,Ltd.
Priority date: 2020-01-08
Filing date: 2020-01-08
Publication date: 2020-08-11
Anticipated expiration: 2040-01-08
Also published as: CN111173733A

Abstract

The invention discloses a short-amplitude inner cycloid type pump which comprises a pump body, wherein a universal joint is movably arranged in the pump body, and a transmission box is fixedly arranged on the right side of the pump body. Through blocking the case and blocking the setting of wheel, the petroleum solution that will get into from the feed liquor case is separated with the universal joint, avoid the universal joint to contact with the petroleum solution, reduce the corruption of petroleum solution to the universal joint on the one hand, the live time of extension universal joint, reduce maintenance number of times and cost of maintenance, on the other hand reduces the running resistance of universal joint, improve and lift efficiency, reduce the energy consumption, and simultaneously, through supporting wheel and supporting case and blocking the case and blocking two liang of combination settings of wheel, the side is injectd the eccentricity of rotor, reduce the skew that petroleum solution caused the rotation of rotor, ensure the best running state of rotor, further improve the efficiency of lifting to petroleum solution.

Description

Short-amplitude inner cycloid type pump

Technical Field

The invention relates to the technical field of screw pumps, in particular to a short-amplitude hypocycloid pump.

Background

Short-amplitude inner cycloid pump is composed of stator and rotor, the heliciform cooperation between them forms a plurality of continuous sealed cavities, rotary motion through the rotor makes sealed cavity constantly produce, the migration and disappear, realize lifting to the medium, as figure 7, the theory of operation of ordinary inner cycloid pump shows, outer defeated motor 3 drives universal joint 4 through the transmission shaft in transmission case 2 and rotates, and then under the effect of universal joint 4, rotor 5 carries out planetary rotation in ordinary rubber bush 7, and then transport the medium that gets into from feed liquor case 9 left and then discharge from drain box 10, at present, because the good performance of screw pump, can be used in oil field exploitation, but it has some inadequacies, as follows:

firstly, a universal joint 4 is arranged in a cavity of a liquid inlet box 9 and is used for transmitting power for a rotor 5 and adjusting the eccentricity of the rotor 5, the universal joint 4 mainly comprises 2 shifting forks, 1 cross shaft, 4 shaft sleeves, 1 rubber leather sleeve and the like, under the driving action of the output motor 3, the universal joint 4 frequently changes direction to move in the cavity of the liquid inlet tank 9, the joint of the universal joint 4 and the rotor 5 is sealed by a rubber leather sheath to prevent the universal joint 4 from directly contacting with the petroleum solution, meanwhile, the two ends of the rubber leather sheath are fixed in the shifting fork sealing groove by steel belts, but the rubber leather sheath is repeatedly stretched and bent under the influence of the operation of the pump, the abrasion of the steel belts to the leather sheath causes the sealing failure, and the universal joint 4 is immersed in the petroleum solution, and the petroleum solution is immersed, so that the universal joint 4 is lubricated and loses efficacy and is quickly worn, meanwhile, the universal joint 4 is also affected by corrosion of the petroleum solution, so that the universal joint 4 is corroded and damaged.

Secondly, when the rotor 5 performs planetary rotation in the common rubber bushing 7, the rotor 5 applies a certain acting force to the common rubber bushing 7, and a large amount of heat is generated by friction between the two, so that the common rubber bushing 7 is heated to expand, the acting force of the two is increased, the abrasion of the common rubber bushing 7 is increased, even the adhesion between the common rubber bushing 7 and the common steel body casing 6 is separated, once the rotor 5 is wound after the separation, the rotor 5 is locked or broken under high-speed rotation, and the equipment is damaged.

Disclosure of Invention

The invention provides a short-amplitude inner cycloid pump which has the advantages of good protection and increased equipment service time, and solves the problems in the background technology.

The invention provides the following technical scheme: a short inner cycloid type pump comprises a pump body, wherein a universal joint is movably mounted inside the pump body, a transmission box is fixedly mounted on the right side of the pump body, the right end of the universal joint is fixedly connected with the transmission box, an outer motor is fixedly connected with the right end of the transmission box, a blocking box is fixedly mounted on the right side of the pump body, a blocking wheel is sleeved on the inner activity of the blocking box, the right end of the blocking wheel is fixedly connected with the universal joint, a liquid inlet box is fixedly mounted on the left side of the blocking box, the left end of the blocking wheel is located in the liquid inlet box, a spiral conveyor is fixedly connected with the inner side of the liquid inlet box, a constant wall thickness steel body outer sleeve is fixedly connected with the left side of the liquid inlet box, a constant wall thickness rubber bushing is fixedly bonded on the inner wall of the constant wall thickness steel body outer sleeve, a constant wall thickness rubber bushing is fixedly connected with the left end of the spiral conveyor and located in the constant wall, the left side fixed mounting of play liquid box has a supporting box, the left end of rotor just is located the inside fixedly connected with supporting wheel of supporting box, the middle part fixed mounting who waits wall thickness steel body overcoat surface has vacuum apparatus.

Preferably, block case and draw together the box, the activity chamber has been seted up to the inside of box, spacing through-hole has been seted up at the middle part of activity chamber both sides, the radius in activity chamber is R4, the radius of spacing through-hole is R3, block the wheel and include roller shaft and separation dish, the fixed cup joint of separation dish is on the roller shaft, the radius of roller shaft is R1, the radius of separation dish is R2, the both ends of roller shaft respectively with the left end of universal joint and screw conveyer's right-hand member fixed connection, the roller shaft cup joints with spacing through-hole activity, the separation dish cup joints with the activity chamber activity, the difference of the radius of activity chamber and separation dish is L1, the difference of the radius of spacing through-hole and roller shaft is L2, L1 is greater than or equal to L2.

Preferably, the thickness of the blocking wheel is the same as the width of the movable cavity, and sealing rings are fixedly mounted on two sides of the blocking disc.

Preferably, equidistant helical blades are fixedly mounted on the screw conveyor.

Preferably, the through-hole has been seted up at the middle part of waiting wall thickness steel body overcoat, vacuum apparatus includes the sealed shell, the upper surface activity joint of sealed shell inner chamber has the support flat board, the bottom of support flat board is dull and stereotyped and the through-hole form on waiting wall thickness steel body overcoat is the same, the bottom surface of support flat board and the internal surface level of waiting wall thickness steel body overcoat, the extraction opening has been seted up in the left side at sealed shell top, the right side fixed mounting at sealed shell top has pressure sensor.

Preferably, the top of the supporting plate is movably sleeved with a spring in the sealed shell, the height of the supporting plate is equal to the distance from the upper surface of the inner cavity of the sealed shell to the outer surface of the rubber bushing with the same wall thickness, and the bottom surface of the supporting plate is fixedly connected with the outer surface of the rubber bushing with the same wall thickness.

The invention has the following beneficial effects:

1. through blocking the case and blocking the setting of wheel, the petroleum solution that will get into from the feed liquor case is separated with the universal joint, avoid the universal joint to contact with the petroleum solution, reduce the corruption of petroleum solution to the universal joint on the one hand, the live time of extension universal joint, reduce maintenance number of times and cost of maintenance, on the other hand reduces the running resistance of universal joint, improve and lift efficiency, reduce the energy consumption, and simultaneously, through supporting wheel and supporting case and blocking two double-row combination settings of case and blocking the wheel, on the one hand prescribes a limit to the eccentricity of rotor, reduce the skew that petroleum solution caused the rotation of rotor, ensure the best running state of rotor, further improve the efficiency of lifting to petroleum solution, on the other hand reduces rotor only one end and is connected and causes pressure to the universal joint with the universal joint, reduce the wearing and tearing of both junctions.

2. Through vacuum apparatus's setting for when waiting that wall thickness rubber bushing comes unstuck, adsorb to wall thickness rubber bushing, and carry out signal transmission, make early warning and disconnection equipment switch, stop equipment prevents to wait that wall thickness rubber bushing from twining the rotor after coming unstuck, and the rotor continues the rotation and causes the rotor card to die or break, and then leads to equipment to damage, improve equipment's security, reduce the accident risk, improve the processing speed, reduce the loss.

Drawings

FIG. 1 is a schematic partial structural diagram of the present invention;

FIG. 2 is a schematic view at C-C in FIG. 1 of the present invention;

FIG. 3 is a side view of the installation of the blocker box and blocker wheel of the present invention;

FIG. 4 is a schematic view of the installation of the blocking box and the blocking wheel in the structure of the present invention;

FIG. 5 is an enlarged view of the point A in FIG. 1;

FIG. 6 is an enlarged view of the point B in FIG. 2;

fig. 7 is a schematic diagram of a conventional structure.

In the figure: 1. a pump body; 2. a transmission box; 3. an output motor; 4. a universal joint; 5. a rotor; 6. a common steel body is sleeved; 7. a common rubber bushing; 9. a liquid inlet tank; 10. a liquid outlet box; 11. steel body jackets with equal wall thicknesses; 12. rubber bushings with equal wall thickness; 13. a blocking box; 131. a box body; 132. a movable cavity; 133. a limiting through hole; 14. a blocking wheel; 141. a roller; 142. a barrier disc; 15. a screw conveyor; 16. a support wheel; 17. a support box; 18. a vacuum device; 181. a closed shell; 182. supporting the flat plate; 183. a spring; 184. an air extraction opening; 185. a pressure sensor.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, a short-amplitude inner cycloid pump comprises a pump body 1, a universal joint 4 is movably mounted inside the pump body 1, a transmission box 2 is fixedly mounted on the right side of the pump body 1, the right end of the universal joint 4 is fixedly connected with the transmission box 2, an outer transmission motor 3 is fixedly connected with the right end of the transmission box 2, a blocking box 13 is fixedly mounted on the right side of the pump body 1, a blocking wheel 14 is movably sleeved inside the blocking box 13, the right end of the blocking wheel 14 is fixedly connected with the universal joint 4, a liquid inlet box 9 is fixedly mounted on the left side of the blocking box 13, a spiral conveyor 15 is fixedly connected with the left end of the blocking wheel 14 and positioned inside the liquid inlet box 9, a steel jacket 11 with equal wall thickness is fixedly connected with the left side of the liquid inlet box 9, a rubber bush 12 with equal wall thickness is fixedly bonded on the inner wall of the steel jacket 11 with equal wall thickness, a rotor 5 is fixedly connected with the left end of the, a liquid outlet box 10 is fixedly arranged on the left side of the equal-wall-thickness rubber bushing 12, a supporting box 17 is fixedly arranged on the left side of the liquid outlet box 10, a supporting wheel 16 is fixedly connected to the left end of the rotor 5 and positioned inside the supporting box 17, and a vacuum device 18 is fixedly arranged in the middle of the outer surface of the equal-wall-thickness steel body outer sleeve 11.

Wherein, the blocking box 13 comprises a box body 131, a movable cavity 132 is arranged in the box body 131, the middle parts of two sides of the movable cavity 132 are provided with a limit through hole 133, the radius of the movable cavity 132 is R4, the radius of the limit through hole 133 is R3, the blocking wheel 14 comprises a rolling shaft 141 and a blocking disc 142, the blocking disc 142 is fixedly sleeved on the rolling shaft 141, the radius of the rolling shaft 141 is R1, the radius of the blocking disc 142 is R2, two ends of the rolling shaft 141 are respectively fixedly connected with the left end of the universal joint 4 and the right end of the screw conveyor 15, the rolling shaft 141 is movably sleeved with the limit through hole 133, the blocking disc 142 is movably sleeved with the movable cavity 132, when the rotor 5 rotates in a planetary manner, the rolling shaft 141 rotates in the limit through hole 133, the limit through hole 133 limits the rotating track of the rolling shaft 141, determines the eccentric distance of the rotor 5, so that the rotor 5 keeps the optimal eccentric rotation, and, the radius difference between the movable cavity 132 and the blocking disc 142 is L1, the radius difference between the limiting through hole 133 and the roller 141 is L2, and L1 is greater than or equal to L2, so that the moving track of the roller 141 in the limiting through hole 133 is prevented from being influenced when the blocking disc 142 rotates, and errors are reduced.

Wherein, the thickness that blocks wheel 14 is the same with the width in activity chamber 132, and the both sides fixed mounting of separation dish 142 has the sealing washer, can carry out the separation to the left oil solution of separation dish 142, prevents its and universal joint 4 contact, leads to the corruption and the damage of universal joint 4, improves universal joint 4 protectiveness, reduces the running resistance of universal joint 4.

Wherein, the screw conveyor 15 is fixedly provided with equidistant helical blades which can rotate along with the rotor 5 and conduct the petroleum solution in the liquid inlet box 9 to the left, thereby improving the transportation efficiency of the petroleum solution.

Wherein, the middle part of the steel body outer sleeve 11 with the same wall thickness is provided with a through hole, the vacuum device 18 comprises a sealed shell 181, the upper surface of the inner cavity of the sealed shell 181 is movably clamped with a supporting flat plate 182, the bottom flat plate of the supporting flat plate 182 has the same shape with the through hole on the steel body outer sleeve 11 with the same wall thickness, the bottom surface of the supporting flat plate 182 is horizontal with the inner surface of the steel body outer sleeve 11 with the same wall thickness, the left side of the top part of the sealed shell 181 is provided with an extraction opening 184, the right side of the top part of the sealed shell 181 is fixedly provided with a pressure sensor 185, when the rubber bush 12 with the same wall thickness is cast, the bottom surface of the supporting flat plate 182 is matched with the inner wall of the steel body outer sleeve 11 with the same wall thickness, the rubber bush 12 with the same wall thickness is supported, the rubber bush 12 with the same wall thickness is prevented from overflowing, after the rubber bush 12, when the rubber bushing 12 with the equal wall thickness is degummed, due to the pressure difference between the degummed part and the sealed shell 181, the supporting flat plate 182 descends, so that air between the rubber bushing 12 with the equal wall thickness and the steel body outer sleeve 11 with the equal wall thickness is sucked, the rubber bushing 12 with the equal wall thickness can be attached to the steel body outer sleeve 11 with the equal wall thickness again for a certain time, meanwhile, the pressure of the sealed shell 181 is changed, the pressure sensor 185 transmits a detected signal to the control system to perform early warning and stop the equipment, the phenomenon that the rotor 5 is wound after the rubber bushing 12 with the equal wall thickness is degummed, the rotor 5 is clamped or broken, the equipment damage is caused, the safety of the equipment is improved, the accident risk is reduced, the processing speed is improved, and the loss is reduced.

The top of the supporting plate 182 is movably sleeved with a spring 183 in the sealed shell 181, the height of the supporting plate 182 is equal to the distance from the upper surface of the inner cavity of the sealed shell 181 to the outer surface of the rubber bushing 12 with the equal wall thickness, the bottom surface of the supporting plate 182 is fixedly connected with the outer surface of the rubber bushing 12 with the equal wall thickness, the spring 183 pushes the supporting plate 182 upwards, the bottom surface of the supporting plate 182 is parallel to the inner wall of the steel body outer sleeve 11 with the equal wall thickness, the formation of the rubber bushing 12 with the equal wall thickness is ensured, meanwhile, the rubber bushing 12 with the equal wall thickness is supported, the rubber bushing does not protrude outwards in the using process, and the operation of equipment is ensured.

The working principle is that power is transmitted to the universal joint 4 through the transmission box 2 by the output motor 3, the blocking wheel 14, the screw conveyor 15, the rotor 5 and the supporting wheel 16 which are sequentially connected on the left side of the universal joint 4 also rotate along with the universal joint, and rotate in a certain eccentric rotation mode, the rolling shaft 141 can be limited by the limiting through hole 133, the eccentric distance of the rolling shaft is fixed, the blocking disc 142 rotates in the movable cavity 132 and blocks the left petroleum solution, the screw conveyor 15 rotates to conduct the petroleum solution to the left, the petroleum solution enters the rotor 5 and the rubber bushing 12 with the same wall thickness, the sealed cavity formed between the steel body outer sleeve 11 with the same wall thickness and the rotor 5 is continuously generated, transported and disappeared by the rotation of the rotor 5, the lifting of the petroleum solution is realized, and then the petroleum solution is discharged from the liquid outlet box 10.

The working principle of the vacuum device 18 is that when the equal-wall-thickness rubber bushing 12 is poured, the bottom surface of the supporting flat plate 182 fits with the inner wall of the equal-wall-thickness steel body outer sleeve 11, the equal-wall-thickness rubber bushing 12 is supported, after the equal-wall-thickness rubber bushing 12 is poured, a closed space is formed in the closed shell 181, air in the closed shell 181 is sucked from the air suction port 184 by using a vacuum pump to reach a certain vacuum degree, when the equal-wall-thickness rubber bushing 12 is degummed, air between the equal-wall-thickness rubber bushing 12 and the equal-wall-thickness steel body outer sleeve 11 is sucked due to the pressure difference between the degummed part and the closed shell 181 to reach a certain adsorption effect, meanwhile, the pressure of the closed shell 181 is changed, and the pressure sensor 185 transmits a detected signal to a control system to perform.

Claims

1. The utility model provides a cycloid formula pump in short width, includes the pump body (1), the inside movable mounting of the pump body (1) has universal joint (4), the right side fixed mounting of the pump body (1) has transmission case (2), the right-hand member and the transmission case (2) fixed connection of universal joint (4), the outer defeated motor (3), its characterized in that of right-hand member fixedly connected with of transmission case (2): the pump comprises a pump body (1), a blocking box (13) is fixedly mounted on the left side of the pump body (1), the blocking wheel (14) is sleeved on the inner portion of the blocking box (13) in a movable mode, the right end of the blocking wheel (14) is fixedly connected with a universal joint (4), the left side of the blocking box (13) is fixedly mounted with a liquid inlet box (9), the left end of the blocking wheel (14) is fixedly connected with a spiral conveyor (15) which is located in the liquid inlet box (9), the left side of the liquid inlet box (9) is fixedly connected with a uniform wall thickness steel body outer sleeve (11), a uniform wall thickness rubber bushing (12) is fixedly bonded on the inner wall of the uniform wall thickness steel body outer sleeve (11), the left end of the spiral conveyor (15) is fixedly connected with an inner fixed connection rotor (5) which is located in the uniform wall thickness rubber bushing (12), the left side of the uniform wall thickness rubber bushing (12) is fixedly mounted with a liquid outlet box (10), and a supporting, the left end of rotor (5) just is located inside fixedly connected with supporting wheel (16) of supporting box (17), equal wall thickness steel body overcoat (11) surface's middle part fixed mounting has vacuum apparatus (18).

2. A short-amplitude hypocycloidal pump according to claim 1 wherein: the blocking box (13) comprises a box body (131), a movable cavity (132) is formed in the box body (131), a limiting through hole (133) is formed in the middle of each of two sides of the movable cavity (132), the radius of the movable cavity (132) is R4, the radius of the limiting through hole (133) is R3, the blocking wheel (14) comprises a rolling shaft (141) and a blocking disc (142), the blocking disc (142) is fixedly sleeved on the rolling shaft (141), the radius of the rolling shaft (141) is R1, the radius of the blocking disc (142) is R2, two ends of the rolling shaft (141) are fixedly connected with the left end of a universal joint (4) and the right end of a spiral conveyor (15) respectively, the rolling shaft (141) is movably sleeved with the limiting through hole (133), the blocking disc (142) is movably sleeved with the movable cavity (132), and the difference between the radii of the movable cavity (132) and the blocking disc (142) is L1, the difference between the radiuses of the limiting through hole (133) and the rolling shaft (141) is L2, and the L1 is larger than or equal to L2.

3. A short-amplitude hypocycloidal pump according to claim 2 wherein: the thickness of the blocking wheel (14) is the same as the width of the movable cavity (132), and sealing rings are fixedly mounted on two sides of the blocking disc (142).

4. A short-amplitude hypocycloidal pump according to claim 1 wherein: equidistant helical blades are fixedly arranged on the helical conveyor (15).

5. A short-amplitude hypocycloidal pump according to claim 1 wherein: the through-hole has been seted up at the middle part of equal wall thickness steel body overcoat (11), vacuum apparatus (18) are including airtight shell (181), the upper surface activity joint of airtight shell (181) inner chamber has support flat board (182), the bottom of supporting flat board (182) is dull and stereotyped the same with the through-hole form on equal wall thickness steel body overcoat (11), the bottom surface of supporting flat board (182) and the internal surface level of equal wall thickness steel body overcoat (11), extraction opening (184) have been seted up to the left side at airtight shell (181) top, the right side fixed mounting at airtight shell (181) top has pressure sensor (185).

6. A short-amplitude hypocycloidal pump according to claim 5 wherein: the top of the support flat plate (182) is movably sleeved with a spring (183) in the sealed shell (181), the height of the support flat plate (182) is equal to the distance from the upper surface of the inner cavity of the sealed shell (181) to the outer surface of the rubber bushing (12) with equal wall thickness, and the bottom surface of the support flat plate (182) is fixedly connected with the outer surface of the rubber bushing (12) with equal wall thickness.