Internal gear pump

Abstract

The utility model discloses an internal gear pump which relates to the technical field of fluid machinery and comprises a base, a gear pump body and vertical T plates, mounting holes are formed in four corners of the base, the vertical T plates are symmetrically and fixedly arranged on the front side face and the rear side face of the base, locking bolts are screwed into the tops of the side faces of the vertical T plates in a threaded mode, and arc-shaped grooves are formed in the front face and the rear face of the gear pump body. An oil inlet is formed in the side face of the gear pump body, and an oil discharge outlet is formed in the top of the gear pump body. According to the internal gear pump, the orientation adjusting assemblies are arranged on the oil inlet and the oil outlet of a traditional internal gear pump, so that the orientation of the oil inlet and the oil outlet of the internal gear pump is allowed to be adjusted within a certain range, and the orientation of the inlet and the orientation of the outlet are allowed to be flexibly adjusted according to specific installation scenes and requirements; the pump is easier to adapt to different mechanical layouts and installation positions, the orientation adjusting assembly can adjust the orientation of an inlet and an outlet under the condition that the overall structure of the pump is not changed, the installation process is simplified, and the installation difficulty is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid machinery, in particular to an internal meshing gear pump. Background Art

[0002] An internal gear pump is a fluid mechanical device that uses the meshing motion of internal gears to transport liquids. Its working principle is to suck the liquid from the inlet through the rotation of the internal gears, and then gradually compress and push the liquid to the outlet under the action of gear meshing, forming a continuous fluid flow. The internal gear pump has a simple and compact structure and can provide stable flow and pressure output. It is often used in hydraulic systems, lubrication systems, oil supply systems and other fields.

[0003] In the prior art, the oil inlet and outlet directions of the internal gear pump are mostly fixed, which limits the flexibility of the pump and restricts its installation and connection process to the fixed inlet and outlet positions, which may make it difficult to adapt and install in certain mechanical layouts or installation scenarios. In addition, the fixed inlet and outlet positions may not meet the requirements of specific applications and may require additional pipe connections or mechanical designs to adapt, increasing the complexity of installation and adjustment, which may result in additional costs and time expenditures. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that the oil inlet and oil outlet directions of the internal gear pump in the prior art are mostly fixed, which limits the flexibility of the pump and makes its installation and connection process restricted by the fixed inlet and outlet positions, which may lead to difficulty in adaptation and installation in certain mechanical layouts or installation scenarios.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An internal gear pump comprises a base, a gear pump body and a vertical T-plate. The base is provided with mounting holes at four corners. Vertical T-plates are symmetrically fixedly arranged on the front and rear sides of the base. Locking bolts are threaded into the top of the sides of the vertical T-plates. Arc grooves are provided on the front and rear sides of the gear pump body. An oil inlet is provided on the side of the gear pump body and an oil outlet is provided on the top of the gear pump body. Direction adjustment components for changing the direction of the oil port are provided at the ends of the oil inlet and the oil outlet.

[0007] Optionally, a side surface of the vertical T-plate is provided with an avoidance groove, the top of the base is configured as an arc-shaped surface, and the bottom of the gear pump body contacts the top of the base.

[0008] Optionally, the direction adjustment assembly includes a threaded barrel, a limiting ring, a locking sleeve, and a connecting elbow. The ends of the oil inlet and the oil outlet are fixedly provided with a threaded barrel. The end of the connecting elbow is fixedly provided with a limiting ring, and the diameter of the limiting ring is equal to the inner diameter of the locking sleeve.

[0009] Optionally, a locking sleeve is movably provided on the outer wall of the connecting elbow, a locking nut is fixedly provided on the outer wall of the locking sleeve, and the locking sleeve is threaded into the outer wall of the threaded barrel.

[0010] Optionally, an upper receiving groove is formed at the bottom of the limiting ring, a lower receiving groove is formed at the top of the threaded cylinder, and a sealing ring is fixedly arranged inside the lower receiving groove.

[0011] Optionally, the end of the locking bolt contacts the side wall of the arc-shaped groove, and the width of the tail of the locking bolt is equal to the width of the arc-shaped groove.

[0012] Compared with the prior art, the utility model has the following advantages:

[0013] 1. The utility model provides a direction adjustment component at the oil inlet and the oil discharge port of the traditional internal gear pump, allowing the direction of the oil inlet and the oil discharge port of the internal gear pump to be adjusted within a certain range, allowing the direction of the inlet and the outlet to be flexibly adjusted according to specific installation scenarios and requirements, making the pump easier to adapt to different mechanical layouts and installation positions, and the direction adjustment component can adjust the direction of the inlet and the outlet without changing the overall structure of the pump, thereby simplifying the installation process and reducing the difficulty of installation.

[0014] 2. The base and the gear pump body of the utility model are not directly fixedly connected in the traditional way. Instead, two sets of inverted T-plates are arranged on the front and rear of the base. The two sets of inverted T-plates limit the gear pump body at the top of the base and rotate within a certain range around the top of the base. The positions of the oil inlet and the oil outlet of the internal gear pump can be further adjusted, and the flexibility is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0016] Figure 2 for Figure 1 Another perspective structural diagram of .

[0017] Figure 3 It is a structural schematic diagram of the connecting elbow and its connecting parts.

[0018] Figure 4 for Figure 3 Another perspective structural diagram of .

[0019] In the figure: 1. oil drain port; 2. oil inlet port; 3. gear pump body; 31. arc groove; 4. base; 5. locking bolt; 6. vertical T-plate; 61. avoidance groove; 7. threaded cylinder; 8. upper containing groove; 9. limiting ring; 10. locking sleeve; 101. locking nut; 11. connecting elbow; 12. lower containing groove; 13. sealing ring. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] Reference Figure 1-4 An internal gear pump comprises a base 4, a gear pump body 3 and a vertical T-plate 6. The base 4 is provided with mounting holes at four corners. The front and rear sides of the base 4 are symmetrically fixed with vertical T-plates 6. A locking bolt 5 is screwed into the top of the side of the vertical T-plate 6. The front and rear sides of the gear pump body 3 are both provided with arc grooves 31. The side of the gear pump body 3 is provided with an oil inlet 2. The top of the gear pump body 3 is provided with an oil outlet 1. The ends of the oil inlet 2 and the oil outlet 1 are provided with orientation adjustment components for changing the direction of the oil port.

[0022] An avoidance groove 61 is provided on the side of the vertical T-plate 6. The avoidance groove 61 is set to leave a path for the fastening bolts on the side end cover of the entire gear pump body 3 to rotate. The top of the base 4 is set to an arc surface, and the bottom of the gear pump body 3 contacts the top of the base 4, so the gear pump body 3 can rotate along the top of the base 4, and the end of the locking bolt 5 contacts the side wall of the arc groove 31. The tail width of the locking bolt 5 is equal to the width of the arc groove 31, and due to the setting of the arc groove 31 and the locking bolt 5, the gear pump body 3 can rotate within a certain range along the top of the base 4. When the locking bolt 5 is manually tightened, the end of the locking bolt 5 contacts the arc groove 31, and the friction force will maintain the oil inlet 2 and the oil outlet 1 of the entire gear pump body 3 at the desired position. Furthermore, the head of the locking bolt 5 is set to be corrugated, which is convenient for the user to rotate the locking bolt 5.

[0023] The direction adjustment component includes a threaded barrel 7, a limit ring 9, a locking sleeve 10, and a connecting elbow 11. The oil inlet 2 and the oil outlet 1 are both fixedly provided with a threaded barrel 7. The outside of the threaded barrel 7 is provided with an external thread. The end of the connecting elbow 11 is fixedly provided with a limit ring 9. The diameter of the limit ring 9 is equal to the inner diameter of the locking sleeve 10, and the diameter of the connecting elbow 11 is smaller than the inner diameter of the locking sleeve 10. The outer wall of the connecting elbow 11 is movably sleeved with a locking sleeve 10, and the outer wall of the locking sleeve 10 is fixedly provided with a locking nut 101.

[0024] The locking sleeve 10 is threaded into the outer wall of the threaded tube 7, an upper receiving groove 8 is provided at the bottom of the limiting ring 9, a lower receiving groove 12 is provided at the top of the threaded tube 7, a sealing ring 13 is fixedly arranged inside the lower receiving groove 12, the upper receiving groove 8 and the lower receiving groove 12 are used to wrap the sealing ring 13, and the sealing ring 13 improves the sealing between the limiting ring 9 at the bottom of the connecting elbow 11 and the top of the threaded tube 7.

[0025] The specific implementation steps and principles of the utility model are as follows:

[0026] Taking the installation of the direction adjustment component on the oil discharge port 1 and the oil inlet 2 of the gear pump body 3 as an example, a locking sleeve 10 is sleeved on the outer wall of the connecting elbow 11, so that the limit ring 9 overlaps the top of the threaded tube 7 at the top of the oil discharge port 1 or the oil inlet 2. After the two sets of connecting elbows 11 are rotated to the required direction, the locking sleeve 10 is tightened to the outer wall of the threaded tube 7 by the locking nut 101.

[0027] When the positions of the oil outlet 1 and the oil inlet 2 of the gear pump body 3 need to be further adjusted, the locking bolt 5 is loosened, and the entire gear pump body 3 is appropriately rotated along the top of the base 4. At this time, the locking bolt 5 moves along the inside of the arc groove 31, and finally the locking bolt 5 is tightened.

[0028] The above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the present invention according to the technical solution and inventive concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An internal gear pump, comprising a base (4), a gear pump body (3), and a vertical T-plate (6), characterized in that: The base (4) is provided with mounting holes at four corners, and vertical T-plates (6) are symmetrically fixedly arranged on the front and rear sides of the base (4). A locking bolt (5) is screwed into the top of the side of the vertical T-plate (6). The gear pump body (3) is provided with arc grooves (31) on the front and rear sides, and an oil inlet (2) is provided on the side of the gear pump body (3). An oil outlet (1) is provided on the top of the gear pump body (3). The ends of the oil inlet (2) and the oil outlet (1) are provided with orientation adjustment components for changing the orientation of the oil outlets.

2. The internal gear pump according to claim 1, characterized in that: The side surface of the vertical T-plate (6) is provided with an avoidance groove (61), the top of the base (4) is configured as an arc-shaped surface, and the bottom of the gear pump body (3) contacts the top of the base (4).

3. The internal gear pump according to claim 1, characterized in that: The orientation adjustment assembly comprises a threaded barrel (7), a limiting ring (9), a locking sleeve (10), and a connecting elbow (11); the ends of the oil inlet (2) and the oil outlet (1) are both fixedly provided with a threaded barrel (7); the end of the connecting elbow (11) is fixedly provided with a limiting ring (9); and the diameter of the limiting ring (9) is equal to the inner diameter of the locking sleeve (10).

4. The internal gear pump according to claim 3, characterized in that: A locking sleeve (10) is movably sleeved on the outer wall of the connecting elbow (11), a locking nut (101) is fixedly provided on the outer wall of the locking sleeve (10), and the locking sleeve (10) is threadedly screwed into the outer wall of the threaded cylinder (7).

5. The internal gear pump according to claim 3, characterized in that: An upper receiving groove (8) is formed at the bottom of the limiting ring (9), a lower receiving groove (12) is formed at the top of the threaded barrel (7), and a sealing ring (13) is fixedly disposed inside the lower receiving groove (12).

6. The internal gear pump according to claim 1, characterized in that: The end of the locking bolt (5) contacts the side wall of the arc-shaped groove (31), and the width of the tail of the locking bolt (5) is equal to the width of the arc-shaped groove (31).

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