Sliding vane pump body with oil supplied by air cavity

Abstract

The utility model provides a sliding vane pump body with oil supplied by an air cavity, which comprises a shell, a cavity body arranged in the shell and a rotating roller rotationally arranged in the cavity body, the rotating roller and the cavity body are eccentrically arranged, and a plurality of partition plates are arranged on the rotating roller along the circumferential direction in a telescopic way, so that the cavity body is divided into a plurality of bearing areas by the plurality of partition plates; the bearing area is used for bearing oil and gas; one side of the cavity is connected with an air inlet, the other side of the cavity is connected with an air outlet, and the air inlet and the air outlet are arranged towards the same side, so that when the rotating roller rotates relative to the cavity, air sequentially enters the bearing areas from the air inlet, and the air and oil in the bearing areas are discharged from the air outlet; the shell is formed by splicing an air inlet side shell, a middle section shell and a driving side shell, the air inlet side shell is provided with an air inlet, the middle section shell is provided with an exhaust port, and the cavity and the rotating roller are both located in the middle section shell; according to the utility model, the stability of oil liquid transmission is improved, and the oil liquid transmission efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of pump equipment, in particular to a vane pump body with oil supply through an air cavity. Background Art

[0002] The vane pump is also called a blade pump, a scraper pump, or a scraper pump. Most of them are composed of a pump body, an inner rotor, a stator, a pump cover, and a vane. Its working principle is to rely on centrifugal force to make the vane close to the eccentric stator, and the volume between the two vanes at the inlet increases, sucking air, while the volume between the two vanes at the outlet decreases, exhausting air.

[0003] However, the current vane pumps are basically only used for gas or liquid alone, and cannot simultaneously transmit gas and liquid together. Moreover, when the vane pump is used to transmit liquid, it is difficult to compress the liquid as much as the gas after compression, so the transmission efficiency of the liquid is slow. Utility Model Content

[0004] The utility model aims to provide a vane pump body with air cavity oil supply, which can improve the stability of oil transmission and the efficiency of oil transmission.

[0005] In order to solve the above technical problems, the utility model provides a vane pump body for oil supply with an air cavity, comprising a shell, a cavity opened inside the shell, and a roller rotatably arranged in the cavity, wherein the roller and the cavity are eccentrically arranged, and the roller is telescopically arranged with a plurality of partitions so that the plurality of partitions divide the cavity into a plurality of bearing areas, and the bearing areas are used to bear oil and gas; an air inlet is connected to one side of the cavity, and an exhaust port is connected to the other side, and the air inlet and the exhaust port are arranged toward the same side, so that when the roller rotates relative to the cavity, the gas enters the plurality of bearing areas in turn from the air inlet, and the gas and oil in the bearing areas are discharged from the exhaust port; the shell is formed by splicing an air inlet side shell, a middle section shell, and a drive side shell, the air inlet side shell is provided with an air inlet, the middle section shell is provided with an exhaust port, and the cavity and the roller are both located in the middle section shell.

[0006] Furthermore, sealing rings are provided at the connections between the air intake side housing, the middle section housing and the driving side housing.

[0007] Furthermore, an oil return port is opened on one side of the shell, and the oil return port is connected to the cavity through an oil return pipeline, so that when the roller rotates relative to the cavity, several bearing areas pass through the outlet end of the oil return pipeline in sequence.

[0008] Furthermore, both ends of the roller have a rotating shaft so that the roller can rotate with the shell through the rotating shaft. An oil injection port is opened on one side of the shell, and the oil injection port is connected to the side of the rotating shaft through a sealing pipeline so that the oil at the oil injection port can seal the rotating shaft position.

[0009] Furthermore, a secondary pipeline is opened at the end of the sealing pipeline, and the pipe end of the secondary pipeline faces the side of the roller, so that the oil at the oil injection port can oil-seal the position between the side of the roller and the cavity.

[0010] Furthermore, a branch is provided on one side of the sealing pipeline, and the branch is connected to the inner side of the cavity, so that when the roller rotates relative to the cavity, a plurality of bearing areas pass through the outlet end of the branch in sequence.

[0011] Furthermore, a plurality of limiting grooves are provided along the circumferential direction of the roller, the partition plate is movably matched with the limiting groove, and a through groove is provided on one side of the limiting groove, one end of the through groove is connected to the inner side of the limiting groove, and the other end is connected to the load-bearing area, and the through groove is located on the side of the partition plate away from the rotation direction of the roller; the depth of the through groove is greater than the depth of the limiting groove, so that when the partition plate is contracted in the limiting groove, the through groove can maintain the connection state between the inner side of the limiting groove and the load-bearing area.

[0012] Furthermore, a groove is provided on one side of the cavity close to the exhaust port, so that when a plurality of bearing areas pass through the groove in sequence, oil and gas enter the exhaust port through the groove.

[0013] Furthermore, the width of the inner side of the limiting groove is greater than the width of the opening of the limiting groove, so that when the partition is retracted in the limiting groove, there is a gap between the inner wall of the limiting groove and the side of the partition.

[0014] Furthermore, an air inlet groove is provided at one end of the air inlet near the cavity, and the air inlet groove is connected to at least two bearing areas at the same time, and the opening size of the air inlet groove gradually increases along the rotation direction of the roller.

[0015] The beneficial effect of the utility model is that the gas enters each bearing area in turn from the air inlet. During the rotation of the roller relative to the cavity, the roller and the cavity are eccentrically arranged, so that the spatial volumes of each bearing area are different. After the gas enters one of the bearing areas from the air inlet, the spatial volume of the bearing area is synchronously reduced with the rotation of the roller, so that the bearing area compresses the gas and oil inside. During the compression process, the degree of compression of the gas is relatively large, so that when the bearing area rotates to the exhaust port with the roller, the compressed gas carries the oil and is ejected outward from the exhaust port, thereby ensuring the stable transmission of the oil. At the same time, compared with the compression transmission of the oil alone, the method of ejecting the oil with the compressed gas can effectively improve the transmission efficiency of the oil. Subsequently, after the gas carries the oil and is discharged, the bearing area continues to rotate with the roller, so that the spatial volume of the bearing area gradually increases, and passes through the position of the air inlet again, so that the bearing area with increased spatial volume sucks the gas at the air inlet to ensure the subsequent gas compression effect.

[0016] It is worth mentioning that during the rotation of the roller of the present solution, due to the action of centrifugal force, one ends of several partitions are all in contact with the inner wall of the cavity to ensure that each load-bearing area is relatively independent and isolated, thereby ensuring that the reduction in the volume of the space will compress the gas, so as to avoid the situation where the load-bearing areas are connected and the gas cannot be compressed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model.

[0018] Figure 2 It is a rear view of the utility model.

[0019] Figure 3 This utility model Figure 2 Section view along line AA.

[0020] Figure 4 It is a side view of the utility model.

[0021] Figure 5 This utility model Figure 4 Section along line BB.

[0022] Figure 6 This utility model Figure 4 Section view along line CC.

[0023] Figure 7 This utility model Figure 4 Section along line DD.

[0024] Figure 8 This utility model Figure 4 Cross-section along line EE.

[0025] Figure numerals: 1. shell; 2. cavity; 3. roller; 4. partition; 5. bearing area; 6. air inlet; 7. exhaust port; 8. oil return port; 9. oil return pipeline; 10. shaft; 11. oil injection port; 12. sealing pipeline; 13. auxiliary pipeline; 14. branch; 15. limit groove; 16. through groove; 17. groove; 18. air inlet groove. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0027] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0028] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0029] like Figure 1-Figure 8 The utility model provides a vane pump body for oil supply by an air cavity, comprising a shell 1, a cavity 2 opened inside the shell 1, and a roller 3 rotatably arranged in the cavity 2, wherein the roller 3 is eccentrically arranged with the cavity 2, and the roller 3 is telescopically arranged with a plurality of partitions 4, so that the plurality of partitions 4 divide the cavity 2 into a plurality of bearing areas 5, and the bearing areas 5 are used to bear oil and gas; one side of the cavity 2 is connected to an air inlet 6, and the other side is connected to an exhaust port 7, so that when the roller 3 rotates relative to the cavity 2, the gas enters the plurality of bearing areas 5 in sequence from the air inlet 6, and the gas and oil in the bearing areas 5 are discharged from the exhaust port 7.

[0030] The gas enters each bearing area in turn from the air inlet. During the rotation of the roller relative to the cavity, the roller and the cavity are eccentrically arranged, so that the spatial volumes of each bearing area are different. After the gas enters one of the bearing areas from the air inlet, the spatial volume of the bearing area is synchronously reduced with the rotation of the roller, so that the bearing area compresses the gas and oil inside. During the compression process, the degree of compression of the gas is relatively large, so that when the bearing area rotates to the exhaust port with the roller, the compressed gas carries the oil and sprays out from the exhaust port, thereby ensuring the stable transmission of the oil. At the same time, compared with the compression transmission of the oil alone, the method of spraying the oil with gas compression can effectively improve the transmission efficiency of the oil. Subsequently, after the gas carries the oil and is discharged, the bearing area continues to rotate with the roller, so that the spatial volume of the bearing area gradually increases, and passes through the position of the air inlet again, so that the bearing area with increased spatial volume sucks the gas at the air inlet to ensure the subsequent gas compression effect.

[0031] It is worth mentioning that during the rotation of the roller of the present solution, due to the action of centrifugal force, one ends of several partitions are all in contact with the inner wall of the cavity to ensure that each load-bearing area is relatively independent and isolated, thereby ensuring that the reduction in the volume of the space will compress the gas, so as to avoid the situation where the load-bearing areas are connected and the gas cannot be compressed.

[0032] In one embodiment of the present solution, one end of the roller is connected to the output end of the motor so that the motor controls the roller to rotate.

[0033] In another embodiment of the present scheme, the shell 1 is formed by splicing an air intake side shell, a middle shell, and a drive side shell. The air intake side shell is provided with an air inlet, the middle shell is provided with an exhaust port, and the cavity, roller and other structures are all located in the middle shell, while the motor for driving the roller to rotate is located on the outside of the drive side shell. The advantage of such a setting is that when the gas pipeline, cavity, motor and other structures are inspected and maintained separately, the shell at this location can be conveniently disassembled, and at the same time, the inside of the cavity can be opened and observed from either the air intake side shell or the drive side shell, so as to ensure the convenient inspection of the cavity structure which is the main working place in this scheme.

[0034] Among them, the connections between the intake side housing, the middle section housing, and the drive side housing are all provided with sealing structures such as sealing rings.

[0035] Preferably, an oil return port 8 is opened on one side of the shell 1, and the oil return port 8 is connected to the cavity 2 through an oil return pipeline 9, so that when the roller 3 rotates relative to the cavity 2, the plurality of bearing areas 5 pass through the outlet end of the oil return pipeline 9 in sequence.

[0036] Specifically, the oil enters from the oil return port and flows along the oil return pipeline into the cavity, so that each load-bearing area passes through the outlet end of the oil return pipeline during the rotation process, and then the oil at the oil return port can enter each load-bearing area in turn and rotate with the load-bearing area to ensure that the gas can carry this part of the oil and be discharged from the exhaust port.

[0037] In one embodiment of the present scheme, the oil return port is externally connected to an oil-gas separation device, a small amount of oil is separated by the oil-gas separation device, and the part of the oil flows into the cavity through the oil return port for transportation, and a mixture of oil and air is obtained after being transported by compressed gas; wherein, the exhaust port in the present scheme is connected to the head of the equipment, so that the oil separated at the oil return port is finally transported to the head for use.

[0038] In another embodiment of the present solution, the oil return port is located on the air intake side housing, so that the oil return port can be inspected by disassembling the air intake side housing.

[0039] Preferably, both ends of the roller 3 have a rotating shaft 10, so that the roller 3 can rotate with the shell 1 through the rotating shaft 10. An oil injection port 11 is opened on one side of the shell 1, and the oil injection port 11 is connected to the side of the rotating shaft 10 through a sealing pipeline 12, so that the oil at the oil injection port 11 can seal the position of the rotating shaft 10.

[0040] Specifically, the oil at the oil injection port flows along the sealing pipeline to the rotating shaft. In the process of the rotating shaft driving the roller to rotate, this part of the oil is replenished to the overall peripheral position of the rotating shaft, so that this part of the oil can oil-seal the periphery of the rotating shaft. Not only can the oil seal the periphery of the rotating shaft, but the oil can also lubricate the rotating position of the rotating shaft to ensure smooth rotation of the rotating shaft.

[0041] In one embodiment of the present solution, the fuel injection port is externally connected to a fuel supply device, and fuel is supplied to the fuel injection port through the fuel supply device.

[0042] In another embodiment of the present solution, the oil injection port is located on the driving side housing, so that the oil injection port can be inspected by disassembling the driving side housing.

[0043] Preferably, a secondary pipeline 13 is opened at the end of the sealing pipeline 12, and the pipe end of the secondary pipeline 13 faces the side of the roller 3, so that the oil at the oil injection port 11 can oil-seal the position between the side of the roller 3 and the cavity 2.

[0044] Specifically, part of the oil at the oil injection port flows along the secondary pipeline, so that part of the oil can directly enter the position between the side of the roller and the inner wall of the cavity, and as the roller rotates, the side of each partition and the inner wall of the cavity can be oil-sealed by the oil to ensure the sealing and lubrication effects between the partition, the roller and the inner wall of the cavity.

[0045] At the same time, excess oil in the auxiliary pipeline can directly enter each load-bearing area, and then part of the oil at the oil injection port and the oil at the oil return port are discharged from the exhaust port through the gas in the load-bearing area.

[0046] Preferably, a branch 14 is opened on one side of the sealing pipeline 12 , and the branch 14 is connected to the inner side of the cavity 2 , so that when the roller 3 rotates relative to the cavity 2 , the plurality of bearing areas 5 pass through the outlet end of the branch 14 in sequence.

[0047] Specifically, since the branch directly points to the rotating path of each load-bearing area, part of the oil flowing through the branch at the oil injection port can directly enter the load-bearing area for transportation, so that the oil injection port, under the action of the sealing pipeline, the auxiliary pipeline and the branch pipeline, has the function of oil sealing and lubricating the rotating shaft / roller / partition and replenishing oil to the load-bearing area, so that a single oil injection port has multiple uses, and on the basis of transporting the oil, the sealing effect and lubrication effect in the oil transportation process are simultaneously improved.

[0048] Preferably, the roller 3 is provided with a plurality of limiting grooves 15 along the circumferential direction, the partition plate 4 is movably matched with the limiting groove 15, and a through groove 16 is provided on one side of the limiting groove 15, one end of the through groove 16 is connected to the inner side of the limiting groove 15, and the other end is connected to the bearing area 5, and the through groove 16 is located on the side of the partition plate 4 away from the rotation direction of the roller 3.

[0049] Specifically, the telescopic path of the partition is guided and positioned by the limit groove. During the rotation of the roller, the partition is moved toward the outside of the limit groove by centrifugal force, so that the end of the partition is against the inner wall of the cavity, thereby separating the various load-bearing areas. At the same time, due to the setting of the through groove, after the partition moves toward the outside of the limit groove, part of the gas and oil enter the inner side of the limit groove along the through groove position, so that the space between the inner side of the partition and the inner side of the limit groove is filled with a mixture of gas and oil. At this time, the position of the partition in the limit groove can be pushed by the mixture, thereby strengthening the sealing effect between the partition and the cavity, so that the partition is simultaneously pushed by the mixture and acted upon by centrifugal force.

[0050] Preferably, a groove 17 is formed on one side of the cavity 2 close to the exhaust port 7 , so that when the plurality of bearing areas 5 pass through the groove 17 in sequence, the oil and gas enter the exhaust port 7 through the groove 17 .

[0051] Specifically, when each load-bearing area passes through the exhaust port in turn, due to the setting of the groove, the partition can increase the discharge efficiency of gas and oil through the groove while maintaining contact with the inner wall of the cavity, and increase the entry range at the exhaust port to ensure that the gas can stably carry the oil out.

[0052] Preferably, the depth of the through groove 16 is greater than the depth of the limiting groove 15 , so that when the partition 4 is retracted in the limiting groove 15 , the through groove 16 can maintain the communication state between the inner side of the limiting groove 15 and the bearing area 5 .

[0053] Specifically, when the load-bearing area rotates with the roller to a position close to the exhaust port or just leaves the exhaust port, the partition is basically in a state of being completely retracted in the limit groove. At this time, a through groove with a depth greater than the limit groove is required to ensure that the gas and oil can still pass through the through groove position to push the side of the partition located inside the limit groove, so as to ensure the stability of the fit between the partition and the cavity.

[0054] Preferably, the width of the inner side of the limiting groove 15 is greater than the width of the opening of the limiting groove 15 , so that when the partition 4 is retracted in the limiting groove 15 , there is a gap between the inner wall of the limiting groove 15 and the side of the partition 4 .

[0055] Specifically, when the partition is in a state of being completely retracted in the limit groove, the gap between the partition and the limit groove allows the mixture of gas and oil to have enough space to enter the inner side of the limit groove from the through groove, thereby ensuring the pushing effect of the mixture on the partition.

[0056] Preferably, an end of the air inlet 6 close to the cavity 2 has an air inlet groove 18 , the air inlet groove 18 is connected to at least two bearing areas 5 at the same time, and the opening size of the air inlet groove 18 gradually increases along the rotation direction of the roller 3 .

[0057] Specifically, as the load-bearing area continues to rotate with the roller after passing through the exhaust port, the space volume inside the load-bearing area will gradually increase. At this time, when the load-bearing area passes through the air intake groove, the gradually increasing space volume can follow the gradually increasing opening size of the air intake groove to ensure that there is sufficient gas inside the load-bearing area, and then ensure that the gas can be stably written into the oil for discharge.

[0058] In a preferred embodiment of the present scheme, the air inlet and the exhaust port are arranged toward the same side, and the oil return port and the oil injection port are arranged toward the same side, so that the gas pipeline and the oil pipeline will not be confused and entangled, thereby ensuring clear arrangement between the pipelines of the overall equipment.

[0059] The present utility model is not limited to the above-mentioned optimal implementation mode. Anyone can derive other various forms of products under the inspiration of the present utility model. However, no matter what changes are made in the shape or structure, all those having the same or similar technical solutions as the present application fall within the protection scope of the present utility model.

Claims

1. A vane pump body with oil supply in air cavity, characterized in that: The invention comprises a shell (1), a cavity (2) opened inside the shell (1), and a roller (3) rotatably arranged in the cavity (2); the roller (3) and the cavity (2) are eccentrically arranged, and the roller (3) is provided with a plurality of partitions (4) telescopically arranged in the circumferential direction, so that the plurality of partitions (4) divide the cavity (2) into a plurality of bearing areas (5), and the bearing areas (5) are used to bear oil and gas; one side of the cavity (2) is connected to an air inlet (6), and the other side is connected to an air outlet (7), and the air inlet (6) is connected to the air outlet (7). The inlet (6) and the exhaust port (7) are arranged toward the same side, so that when the roller (3) rotates relative to the cavity (2), gas enters the plurality of bearing areas (5) in sequence from the inlet (6), and the gas and oil in the bearing areas (5) are discharged from the exhaust port (7); the housing (1) is formed by splicing an inlet side housing, a middle section housing, and a drive side housing; the inlet side housing is provided with an inlet port (6), the middle section housing is provided with an exhaust port (7), and the cavity (2) and the roller (3) are both located in the middle section housing.

2. The vane pump body with oil supply through the air cavity according to claim 1, characterized in that: Sealing rings are provided at the connections between the air intake side housing, the middle section housing and the drive side housing.

3. The vane pump body with oil supply from the air cavity according to claim 1, characterized in that: An oil return port (8) is provided on one side of the shell (1), and the oil return port (8) is connected to the cavity (2) through an oil return pipeline (9), so that when the roller (3) rotates relative to the cavity (2), the plurality of bearing areas (5) pass through the outlet end of the oil return pipeline (9) in sequence.

4. The vane pump body with oil supply through the air cavity according to claim 3, characterized in that: The two ends of the rotating roller (3) are provided with a rotating shaft (10), so that the rotating roller (3) is rotatably matched with the housing (1) through the rotating shaft (10); an oil injection port (11) is provided on one side of the housing (1); the oil injection port (11) is connected to the side of the rotating shaft (10) through a sealing pipeline (12), so that the oil at the oil injection port (11) can perform oil sealing on the position of the rotating shaft (10); and the oil return port (8) and the oil injection port (11) are arranged toward the same side.

5. The vane pump body with oil supply through the air cavity according to claim 4, characterized in that: A secondary pipeline (13) is provided at the end of the sealing pipeline (12), and the end of the secondary pipeline (13) faces the side of the roller (3), so that the oil at the oil injection port (11) can perform oil sealing on the position between the side of the roller (3) and the cavity (2).

6. The vane pump body with oil supply through air cavity according to claim 4, characterized in that: A branch (14) is provided on one side of the sealed pipeline (12), and the branch (14) is connected to the inner side of the cavity (2), so that when the roller (3) rotates relative to the cavity (2), the plurality of bearing areas (5) pass through the outlet end of the branch (14) in sequence.

7. The vane pump body with air cavity oil supply according to claim 1, characterized in that: The roller (3) is provided with a plurality of limiting grooves (15) along the circumferential direction, the partition (4) and the limiting groove (15) are in movable cooperation, and a through groove (16) is provided on one side of the limiting groove (15), one end of the through groove (16) is connected to the inner side of the limiting groove (15), and the other end is connected to the bearing area (5), and the through groove (16) is located on the side of the partition (4) away from the rotation direction of the roller (3); the depth of the through groove (16) is greater than the depth of the limiting groove (15), so that when the partition (4) is contracted in the limiting groove (15), the through groove (16) can maintain the connection state between the inner side of the limiting groove (15) and the bearing area (5).

8. The vane pump body with oil supply through air cavity according to claim 1, characterized in that: A groove (17) is provided on one side of the cavity (2) close to the exhaust port (7), so that when the plurality of bearing areas (5) pass through the groove (17) in sequence, oil and gas enter the exhaust port (7) from the groove (17).

9. The vane pump body with oil supply through air cavity according to claim 7, characterized in that: The width of the inner side of the limiting groove (15) is greater than the width of the opening of the limiting groove (15), so that when the partition (4) is retracted in the limiting groove (15), there is a gap between the inner wall of the limiting groove (15) and the side of the partition (4).

10. The vane pump body with oil supply through air cavity according to claim 1, characterized in that: An air inlet (6) has an air inlet groove (18) at one end close to the cavity (2), wherein the air inlet groove (18) is connected to at least two bearing areas (5) at the same time, and the opening size of the air inlet groove (18) gradually increases along the rotation direction of the roller (3).

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