Modular gear pump

Abstract

The utility model discloses a modular gear pump, which belongs to the technical field of gear pumps and comprises a front pump body, a rear pump body and a transition plate, the front pump body comprises a front pump driving gear shaft, front pump bearing seats and a front pump driven gear shaft, and the front pump driving gear shaft and the front pump driven gear shaft are meshed with each other and are both provided with the front pump bearing seats. A front pump cover is installed on the top of the front pump body, a front pump body inner hole is formed in the bottom of the front pump body, the front pump body inner hole and the outer circle of the front pump bearing seat are centered, and the rear pump body comprises a rear pump bearing seat, a rear pump driving gear shaft and a rear pump driven gear shaft. According to the modular gear pump, part of parts are made into modules and can be rapidly assembled, the modular gear pump from single connection to multi-connection is achieved, the requirements of different users are met, and the modular gear pump is high in universality, low in cost and timely in delivery.

Description

Technical Field

[0001] This utility model relates to the field of gear pump technology, specifically to a modular gear pump. Background Technology

[0002] Gear pumps are rotary pumps that rely on the change and movement of the working volume formed between the pump cylinder and meshing gears to transport or pressurize liquids. They consist of two gears, a pump body, and front and rear covers forming two enclosed spaces. When the gears rotate, the volume of the space on the disengaged side of the gears increases, creating a vacuum that draws in the liquid. Conversely, the volume of the space on the meshing side of the gears decreases, forcing the liquid into the pipeline. The suction chamber and discharge chamber are separated by the meshing line of the two gears. The pressure at the outlet of the gear pump depends entirely on the resistance at the pump outlet. Currently, hydraulic systems in construction machinery and mining machinery require double, triple, or multi-stage gear pumps. However, the demand for these pumps is not very large, and there are many different types. The manufacturing cost is high, and production organization is difficult, resulting in long production and delivery cycles. Utility Model Content

[0003] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a modular gear pump, which makes some parts into modules, allowing for rapid assembly and realizing single-unit to multi-unit modular gear pumps to meet the needs of different users. The modular gear pump has strong versatility, low cost, and timely delivery.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a modular gear pump, comprising a front pump body, a rear pump body, and a transition plate. The front pump body includes a front pump drive gear shaft, a front pump bearing housing, and a front pump driven gear shaft. The front pump drive gear shaft and the front pump driven gear shaft mesh with each other and are each provided with a front pump bearing housing. A front pump cover is installed on the top of the front pump body, and a front pump inner hole is provided at the bottom of the front pump body, with the front pump inner hole being centered with the outer circle of the front pump bearing housing. The rear pump body includes a rear pump bearing housing, a rear pump drive gear shaft, and a rear pump driven gear shaft. The rear pump drive gear shaft and the rear pump driven gear shaft mesh with each other and are each provided with a rear pump bearing housing. A rear pump cover is installed at the bottom of the rear pump body, and a rear pump inner hole is provided on the rear pump body, with the outer circle of the rear pump bearing housing being centered with the rear pump inner hole.

[0005] Preferably, the front pump body and the rear pump body are connected by long bolts and nuts, and a transition plate is provided at the connection between the front pump body and the rear pump body.

[0006] Preferably, the front pump drive gear shaft has an internal spline at its rear end and the rear pump drive gear shaft has an external spline. The rear pump drive gear shaft is inserted into the internal spline at the rear end of the front pump drive gear shaft through the external spline, so as to realize the power transmission through spline engagement.

[0007] Preferably, the transition plate is provided with an inner hole, and the positioning stop of the front pump bearing seat and the positioning stop of the rear pump bearing seat are both aligned with the inner hole of the transition plate for centering. The front pump body and the rear pump body are connected in series through the alignment of the front pump bearing seat and the rear pump bearing seat with the transition plate to form a double pump body.

[0008] Preferably, the modular gear pump is a modular single-pump gear pump by removing the transition plate, rear pump bearing seat, rear pump body, rear pump drive gear shaft, and rear pump cover, and directly installing the rear pump cover.

[0009] Preferably, the modular gear pump has its rear pump cover removed, and a transition plate, rear pump bearing seat, rear pump body, rear pump drive gear shaft, and rear pump cover are installed through the rear pump bearing seat a. The rear end of the rear pump drive gear shaft is provided with an internal spline a, which can be connected to another rear pump drive gear shaft to realize the power transmission of the three pumps, that is, a modular triple gear pump.

[0010] Compared with the prior art, the present invention has the following advantages:

[0011] This utility model uses a bearing seat to set a positioning stop and an internal spline at the rear end of the drive gear shaft to achieve mating positioning and repeated installation. At the same time, some parts are made into modules for quick assembly, realizing a modular gear pump from single to multi-unit, meeting the needs of different users. The modular gear pump has strong versatility, low cost, and timely delivery. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the modular gear pump of this utility model;

[0013] Figure 2 This is a schematic diagram of the modular single-pump gear pump of this utility model;

[0014] Figure 3 This is a schematic diagram of the modular triple gear pump of this utility model;

[0015] In the diagram: 1. Front pump cover, 2. Front pump body, 3. Front pump drive gear shaft, 4. Front pump bearing housing, 5. Transition plate, 6. Rear pump bearing housing, 7. Rear pump body, 8. Rear pump cover, 9. Rear pump drive gear shaft, 10. Rear pump bearing housing a, 11. Front pump driven gear shaft, 12. Rear pump driven gear shaft, 21. Front pump body bore, 31. Internal spline, 41. Front pump bearing housing outer circle, 42. Front pump bearing housing positioning stop, 51. Transition plate inner hole, 61. Rear pump bearing housing positioning stop, 62. Rear pump bearing housing outer circle, 71. Rear pump body bore, 91. External spline, 92. Internal spline a. Detailed Implementation

[0016] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0017] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0018] This utility model provides, for example Figure 1 The illustrated modular gear pump includes a front pump body 2, a rear pump body 7, and a transition plate 5. The front pump body 2 includes a front pump drive gear shaft 3, a front pump bearing seat 4, and a front pump driven gear shaft 11. The front pump drive gear shaft 3 and the front pump driven gear shaft 11 mesh with each other and are each provided with a front pump bearing seat 4. A front pump cover 1 is installed on the top of the front pump body 2, and a front pump inner hole 21 is provided at the bottom of the front pump body 2. The front pump inner hole 21 is centered with the outer circle 41 of the front pump bearing seat. The rear pump body 7 includes a rear pump bearing seat 6, a rear pump drive gear shaft 9, and a rear pump driven gear shaft 12. The rear pump drive gear shaft 9 and the rear pump driven gear shaft 12 mesh with each other and are each provided with a rear pump bearing seat 6. A rear pump cover 8 is installed at the bottom of the rear pump body 7, and a rear pump inner hole 71 is provided on the rear pump body 7. The outer circle 62 of the rear pump bearing seat is centered with the rear pump inner hole 71.

[0019] Specifically, the front pump body 2 and the rear pump body 7 are connected by long bolts and nuts, and a transition plate 5 is provided at the connection between the front pump body 2 and the rear pump body 7.

[0020] Specifically, the front pump drive gear shaft 3 has an internal spline 31 at its rear end, and the rear pump drive gear shaft 9 has an external spline 91. The rear pump drive gear shaft 9 is inserted into the internal spline 31 at the rear end of the front pump drive gear shaft 3 through the external spline 91 to achieve spline engagement for power transmission.

[0021] Specifically, the transition plate 5 is provided with an inner hole 51. The positioning stop 42 of the front pump bearing seat and the positioning stop 61 of the rear pump bearing seat are both aligned with the inner hole 51 of the transition plate for centering. The front pump body 2 and the rear pump body 7 are connected in series with the transition plate 5 through the front pump bearing seat 4 and the rear pump bearing seat 6 for centering to form a double pump body.

[0022] Specifically, the modular gear pump can be transformed into a modular single-pump gear pump by removing the transition plate 5, rear pump bearing seat 6, rear pump body 7, rear pump drive gear shaft 9, and rear pump cover 8, and then directly installing the rear pump cover 8. Figure 2 As shown.

[0023] Specifically, the modular gear pump has its rear pump cover 8 removed. A transition plate 5, a rear pump bearing seat 6, a rear pump body 7, a rear pump drive gear shaft 9, and a rear pump cover 8 are installed via a rear pump bearing seat a10. The rear end of the rear pump drive gear shaft 9 has an internal spline a92, which can be connected to another rear pump drive gear shaft 9 to achieve power transmission between the three pumps, thus forming a modular triple gear pump. Figure 3 As shown.

[0024] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A modular gear pump comprising a front pump body (2), a rear pump body (7) and a transition plate (5), characterized in that, The front pump body (2) comprises a front pump driving gear shaft (3), a front pump bearing seat (4) and a front pump driven gear shaft (11), the front pump driving gear shaft (3) and the front pump driven gear shaft (11) are engaged and are both provided with the front pump bearing seat (4), the top of the front pump body (2) is provided with a front pump cover (1), the bottom of the front pump body (2) is provided with a front pump body inner hole (21), and the front pump body inner hole (21) is centered with a front pump bearing seat outer circle (41), the rear pump body (7) comprises a rear pump bearing seat (6), a rear pump driving gear shaft (9) and a rear pump driven gear shaft (12), the rear pump driving gear shaft (9) and the rear pump driven gear shaft (12) are engaged and are both provided with the rear pump bearing seat (6), the bottom of the rear pump body (7) is provided with a rear pump cover (8), and the rear pump body (7) is provided with a rear pump body inner hole (71), and a rear pump bearing seat outer circle (62) is centered with the rear pump body inner hole (71).

2. A modular gear pump according to claim 1, wherein, The front pump body (2) and the rear pump body (7) are connected through long bolts and nuts, and the connecting part of the front pump body (2) and the rear pump body (7) is provided with a transition plate (5).

3. A modular gear pump according to claim 1, wherein, The rear end of the front pump driving gear shaft (3) is provided with an inner spline (31), the rear pump driving gear shaft (9) is provided with an outer spline (91), the rear pump driving gear shaft (9) is installed into the inner spline (31) at the rear end of the front pump driving gear shaft (3) through the outer spline (91), and power transmission is realized through spline cooperation.

4. A modular gear pump according to claim 1, wherein, The transition plate (5) is provided with a transition plate inner hole (51), the front pump bearing seat positioning stop (42) and the rear pump bearing seat positioning stop (61) are both matched and centered with the transition plate inner hole (51), the front pump body (2) and the rear pump body (7) are matched and centered with the transition plate (5) through the front pump bearing seat (4) and the rear pump bearing seat (6) to be connected in series to form a double pump body.

5. A modular gear pump according to claim 1, wherein, The module type gear pump is directly provided with the rear pump cover (8) by removing the transition plate (5), the rear pump bearing seat (6), the rear pump body (7), the rear pump driving gear shaft (9) and the rear pump cover (8), so that a module type single pump gear pump is formed.

6. A modular gear pump according to claim 1, wherein, The module type gear pump is provided with the transition plate (5), the rear pump bearing seat (6), the rear pump body (7), the rear pump driving gear shaft (9) and the rear pump cover (8) through the rear pump bearing seat a (10) by removing the rear pump cover (8), the rear end of the rear pump driving gear shaft (9) is provided with an inner spline a (92), the inner spline a (92) can be connected with another rear pump driving gear shaft (9) to realize power transmission of three pumps, that is, a module type three-pump gear pump.

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