An oil pump

Abstract

The utility model relates to oil pump technical field especially relates to an oil pump, including shell, motor, impeller and gear frame, is seted up oil inlet and oil outlet on the shell, is seted up oil inlet chamber in the shell, oil inlet, oil inlet chamber, oil outlet intercommunication, is provided with the blade on the impeller, the motor is connected with the shell, the gear frame is rotatably connected with the internal gear, is fixedly connected with the gear ring in the shell, is provided with the drive gear on the output of motor, the internal gear is engaged with the gear ring and drive gear, is connected with the pivot on the gear frame, the pivot is connected with the impeller, is equipped with first mounting portion and second mounting portion on the gear frame, is equipped with first bearing on first mounting portion, is equipped with second bearing on second mounting portion, the outer ring of first bearing and second bearing all are connected with the shell, the internal gear, gear ring, drive gear all are located between first bearing and second bearing, solved the problem that the structure is unstable, and the blade is difficult to clean up the more viscous liquid on the inner wall.

Description

Technical Field

[0001] This utility model relates to the field of oil pump technology, and in particular to an oil pump. Background Technology

[0002] Oil pumps are now widely used in industrial production due to their lightweight and compact design. However, existing oil pumps on the market often have the drive motor and planetary gear set directly connected or connected via bearings. The impeller rotates under the drive motor to achieve the oil supply effect. While this achieves the oil supply function, it has the following shortcomings: 1. Generally, oil pumps contain planetary gear sets and gear carriers. The gear carrier only has a bearing on one side connected to the housing, making the structure unstable and prone to shaking during use; 2. The impellers have difficulty cleaning viscous liquids from the inner wall, making the oil pump unsuitable for transporting viscous liquids. Utility Model Content

[0003] To address the aforementioned problems, this invention proposes an oil pump that solves the issues of structural instability and difficulty in cleaning viscous liquids from the inner wall of the blades.

[0004] The technical solution adopted by this utility model is as follows: an oil pump, including a housing, a motor, an impeller, and a gear frame. The housing has an oil inlet and an oil outlet, and an oil inlet chamber is provided inside the housing. The oil inlet, the oil inlet chamber, and the oil outlet are connected. The impeller is provided with blades. The motor is connected to the housing. An internal gear is rotatably connected to the gear frame. A gear ring is fixedly connected inside the housing. A drive gear is provided at the output end of the motor. The internal gear meshes with the gear ring and the drive gear. A rotating shaft is connected to the gear frame and is connected to the impeller. The gear frame has a first mounting part and a second mounting part. A first bearing is provided on the first mounting part, and a second bearing is provided on the second mounting part. The outer rings of both the first and second bearings are connected to the housing. The internal gear, the gear ring, and the drive gear are all located between the first and second bearings.

[0005] With the above technical solution, the first bearing and the second bearing are connected to the two sides of the gear carrier respectively. The gear carrier rotates more smoothly in the housing, the connection structure is more stable, and damage caused by long-term friction is prevented. The gear ring, internal gear and drive gear on the gear carrier can run more stably.

[0006] Furthermore, the housing is provided with a first abutting part and a second abutting part, the gear frame is provided with a first limiting part and a second limiting part, the two sides of the first bearing position are respectively connected to the first limiting part and the first abutting part, and the two sides of the second bearing position are respectively connected to the second limiting part and the second abutting part.

[0007] With the above technical solution, the first bearing is limited between the first limiting part and the first abutting part by the first limiting part, and the second bearing is limited between the second limiting part and the second abutting part by the second limiting part. The first bearing and the second bearing are less likely to shake during operation, and the structure is more stable.

[0008] Furthermore, the gear ring is provided with a protrusion, and the outer shell is provided with a snap-fit ​​groove, the protrusion engaging with the snap-fit ​​groove.

[0009] With the above technical solution, the gear ring and the outer shell are stably connected.

[0010] Furthermore, the impeller is provided with a sliding groove, the blade is slidably connected on the sliding groove, an elastic element is provided in the sliding groove, the elastic element is connected to the impeller and the blade, the end of the blade is in contact with the inner wall of the oil inlet chamber, and the elastic element is always in a compressed state.

[0011] With the above technical solution, the elastic element is always in a compressed state, the blade is in a stressed state, and the blade can scrape off the viscous liquid on the inner wall of the oil inlet chamber.

[0012] Furthermore, the tip of the blade is an acute angle.

[0013] By using the above technical solutions, the contact area between the blades and the inner wall of the oil inlet chamber is reduced, which can better scrape off the viscous liquid on the inner wall of the oil inlet chamber.

[0014] Furthermore, the side of the oil inlet chamber is circular, the impeller is not concentric with the oil inlet chamber, and the axis of the impeller is located above the center of the oil inlet chamber.

[0015] With the above technical solution, the lower part of the oil inlet chamber can hold more liquid, and more liquid can be transferred.

[0016] Furthermore, the outer casing includes a housing and a mounting base. An arc-shaped mounting groove is provided between the gear ring and the housing. The mounting base is provided with a clearance groove that avoids the protrusion. The arc-shaped mounting groove is for mounting the mounting base to the housing.

[0017] Through the above technical solution, the edge of the mounting base is detachably connected to the arc-shaped mounting groove, which facilitates the installation of the gear carrier, internal gear, gear ring and drive gear inside the housing.

[0018] Furthermore, the housing also includes a mounting plate, on which an annular groove is formed, and a sealing ring is provided in the annular groove. The mounting plate is used to seal the side of the oil inlet chamber.

[0019] The above technical solution facilitates the installation of impellers and blades into the oil inlet chamber, and the sealing ring improves the sealing performance of the side wall of the oil inlet chamber. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a cross-sectional view of the state structure of this utility model;

[0023] Figure 3 This is one of the partial structural schematic diagrams of this utility model;

[0024] Figure 4 This is a second schematic diagram of a partial structure of this utility model;

[0025] Figure 5 This is the third partial structural schematic diagram of this utility model;

[0026] Figure 6 This is a schematic diagram of the mounting base of this utility model;

[0027] Figure 7 This is an exploded view of the present invention;

[0028] The utility model reference information is as follows:

[0029] 1. Casing; 2. Motor; 3. Impeller; 4. Gear frame; 5. Internal gear; 6. Gear ring; 7. Drive gear; 8. First bearing; 9. Second bearing; 10. Elastic element; 11. Sealing ring; 101. Oil inlet; 102. Oil outlet; 103. Oil inlet chamber; 104. First abutment part; 105. Second abutment part; 106. Snap-fit ​​groove; 107. Casing; 108. Mounting base; 109. Arc-shaped mounting groove; 110. Mounting plate; 301. Blade; 302. Slide groove; 401. Rotating shaft; 402. First mounting part; 403. Second mounting part; 404. First limiting part; 405. Second limiting part; 601. Protrusion; 1071. Annular groove; 1081. Clearance groove;

[0030] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0033] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0034] See Figure 1 , Figure 2 , Figure 3 , Figure 6 , Figure 7 An oil pump includes a housing 1, a motor 2, an impeller 3, and a gear carrier 4. The housing 1 has an oil inlet 101 and an oil outlet 102, and an oil inlet chamber 103 is provided inside the housing 1. The oil inlet 101, the oil inlet chamber 103, and the oil outlet 102 are connected. The impeller 3 is provided with blades 301. The motor 2 is connected to the housing 1. An internal gear 5 is rotatably connected to the gear carrier 4. A gear ring 6 is fixedly connected inside the housing 1. A drive gear 7 is provided at the output end of the motor 2. The internal gear 5 meshes with the gear ring 6 and the drive gear 7. A rotating shaft 401 is connected to the gear carrier 4 and is connected to the impeller 3. The gear carrier 4 has a first mounting part 402 and a second mounting part 403. A first bearing 8 is provided on the first mounting part 402, and a second bearing 9 is provided on the second mounting part 403. The outer rings of the first bearing 8 and the second bearing 9 are both connected to the housing 1. The internal gear 5, the gear ring 6, and the drive gear 7 are all located between the first bearing 8 and the second bearing 9.

[0035] The first bearing 8 and the second bearing 9 are connected to the two sides of the gear carrier 4 respectively. The gear carrier 4 rotates more smoothly in the housing 1, the connection structure is more stable, and damage caused by long-term friction is prevented. The gear ring 6, internal gear 5 and drive gear 7 on the gear carrier 4 can run more stably.

[0036] See Figure 2 , Figure 4 , Figure 5 , Figure 6 The outer casing 1 is provided with a first abutting part 104 and a second abutting part 105. The gear frame 4 is provided with a first limiting part 404 and a second limiting part 405. The two sides of the first bearing 8 are respectively connected to the first limiting part 404 and the first abutting part 104. The two sides of the second bearing 9 are respectively connected to the second limiting part 405 and the second abutting part 105.

[0037] The first bearing 8 is limited by the first limiting part 404 between the first limiting part 404 and the first abutting part 104, and the second bearing 9 is limited by the second limiting part 405 between the second limiting part 405 and the second abutting part 105. The first bearing 8 and the second bearing 9 are less likely to shake during operation, and the structure is more stable.

[0038] See Figure 3 - Figure 5 The gear ring 6 is provided with a protrusion 601, and the outer shell 1 is provided with a snap-fit ​​groove 106, and the protrusion 601 snaps into the snap-fit ​​groove 106.

[0039] The gear ring 6 is stably connected to the outer shell 1.

[0040] See Figure 7 The impeller 3 has a groove 302, and the blade 301 is slidably connected on the groove 302. An elastic element 10 is provided in the groove 302. The elastic element 10 is connected to the impeller 3 and the blade 301. The end of the blade 301 is in contact with the inner wall of the oil inlet chamber 103. The elastic element 10 is always in a compressed state.

[0041] The elastic element 10 is always in a compressed state, and the blade 301 is in a stressed state. The blade 301 can scrape off the viscous liquid on the inner wall of the oil inlet chamber 103.

[0042] The preferred elastic element 10 is a spring.

[0043] See Figure 7 The tip of blade 301 is an acute angle.

[0044] Reducing the contact area between the blade 301 and the inner wall of the oil inlet chamber 103 allows for better scraping of viscous liquid from the inner wall of the oil inlet chamber 103.

[0045] See Figure 7The side of the oil inlet chamber 103 is circular. The impeller 3 is not concentric with the oil inlet chamber 103. The shaft of the impeller 3 is located above the center of the oil inlet chamber 103.

[0046] The lower part of the oil inlet chamber 103 can hold more liquid, allowing for the transfer of more liquid.

[0047] See Figure 3 , Figure 4 , Figure 6 The outer casing 1 includes a housing 107 and a mounting base 108. An arc-shaped mounting groove 109 is provided between the gear ring 6 and the outer casing 1. The mounting base 108 is provided with a clearance groove 1081, which avoids the protrusion 601. The arc-shaped mounting groove 109 is used for mounting the mounting base 108 and the housing 107.

[0048] The edge of the mounting base 108 is detachably connected to the arc-shaped mounting groove 109, which facilitates the installation of the gear carrier 4, internal gear 5, gear ring 6 and drive gear 7 inside the housing 107.

[0049] See Figure 7 The outer casing 1 also includes a mounting plate 110. An annular groove 1071 is provided on the outer casing 107, and a sealing ring 11 is provided in the annular groove 1071. The mounting plate 110 is used to seal the side of the oil inlet chamber 103.

[0050] The impeller 3 and blades 301 are easily installed into the oil inlet chamber 103, and the sealing ring 11 improves the sealing performance of the side wall of the oil inlet chamber 103.

[0051] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. An oil pump, comprising a housing (1), a motor (2), an impeller (3), and a gear carrier (4), wherein the housing (1) has an oil inlet (101) and an oil outlet (102), and an oil inlet chamber (103) is provided inside the housing (1), the oil inlet (101), the oil inlet chamber (103), and the oil outlet (102) are connected, the impeller (3) is provided with blades (301), the motor (2) is connected to the housing (1), an internal gear (5) is rotatably connected to the gear carrier (4), a gear ring (6) is fixedly connected inside the housing (1), a drive gear (7) is provided on the output end of the motor (2), the internal gear (5) meshes with the gear ring (6) and the drive gear (7), a rotating shaft (401) is connected to the gear carrier (4), and the rotating shaft (401) is connected to the impeller (3), characterized in that: The gear carrier (4) is provided with a first mounting part (402) and a second mounting part (403). The first mounting part (402) is provided with a first bearing (8), and the second mounting part (403) is provided with a second bearing (9). The outer rings of the first bearing (8) and the second bearing (9) are connected to the outer shell (1). The internal gear (5), the gear ring (6), and the drive gear (7) are all located between the first bearing (8) and the second bearing (9).

2. The oil pump according to claim 1, characterized in that: The outer casing (1) is provided with a first abutting part (104) and a second abutting part (105). The gear frame (4) is provided with a first limiting part (404) and a second limiting part (405). The two sides of the first bearing (8) are respectively connected to the first limiting part (404) and the first abutting part (104). The two sides of the second bearing (9) are respectively connected to the second limiting part (405) and the second abutting part (105).

3. An oil pump according to claim 2, characterized in that: The gear ring (6) is provided with a protrusion (601), and the outer shell (1) is provided with a snap-fit ​​groove (106), and the protrusion (601) snaps into the snap-fit ​​groove (106).

4. An oil pump according to claim 1, 2, or 3, characterized in that: The impeller (3) is provided with a sliding groove (302), and the blade (301) is slidably connected on the sliding groove (302). An elastic element (10) is provided in the sliding groove (302). The elastic element (10) is connected to the impeller (3) and the blade (301). The end of the blade (301) is in contact with the inner wall of the oil inlet chamber (103). The elastic element (10) is always in a compressed state.

5. An oil pump according to claim 4, characterized in that: The tip of the blade (301) is acute.

6. An oil pump according to claim 5, characterized in that: The side of the oil inlet chamber (103) is circular. The impeller (3) is not concentric with the oil inlet chamber (103). The axis of the impeller (3) is located above the center of the oil inlet chamber (103).

7. An oil pump according to claim 3, characterized in that: The outer casing (1) includes a housing (107) and a mounting base (108). An arc-shaped mounting groove (109) is provided between the gear ring (6) and the outer casing (1). An avoidance groove (1081) is provided on the mounting base (108), which avoids the protrusion (601). The arc-shaped mounting groove (109) is used for mounting the mounting base (108) and the housing (107).

8. An oil pump according to claim 7, characterized in that: The outer casing (1) also includes a mounting plate (110). An annular groove (1071) is provided on the outer casing (107). A sealing ring (11) is provided in the annular groove (1071). The mounting plate (110) is used to seal the side of the oil inlet chamber (103).

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