Small gear pump suitable for mechanical industry manufacturing

Abstract

The utility model relates to the technical field of gear pumps, and provides a small gear pump suitable for mechanical industry manufacturing, which comprises a gear pump shell, an oil inlet and an oil outlet are respectively arranged on two opposite side walls of the gear pump shell, two connecting rods are connected on the inner walls of two sides of an oil channel through bearings, and the two connecting rods are connected with the gear pump shell through bearings. Two connecting rods are arranged on the gear pump shell, two gears are connected to the two connecting rods in a sleeving mode, baffles are arranged between each gear and the inner walls of the two sides of the gear pump shell, the two baffles are fixedly connected with the inner walls of the gear pump shell, connecting grooves are formed in the faces, facing the gears, of the two baffles, embedding blocks are fixedly connected to the two side walls, facing the baffles, of the gears, and the embedding blocks are matched with the connecting grooves. According to the small gear pump suitable for mechanical industry manufacturing, a gap between the gear and the gear pump shell is filled with the multiple baffles, and backlash leakage is reduced; in addition, two rubber rings are arranged on the outer side walls of the two gears, so that leakage of an inter-tooth meshing gap when the gear pump works is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of gear pumps, in particular to a small gear pump suitable for mechanical industrial manufacturing. Background Art

[0002] At present, with the development of my country's machinery manufacturing industry, more and more machinery production equipment are appearing in production workshops. Gear pumps, as a common conveying pump, have the characteristics of simple and compact structure, small size, light weight, good processability, low price, strong self-priming, insensitivity to oil pollution, wide speed range, and ability to withstand impact loads. They are widely used in industrial production and daily life.

[0003] The gear pump is a type of positive displacement pump. It consists of two gears, a pump body, and front and rear covers to form two closed spaces. When the gears rotate, the volume of the space on the side where the gears are disengaged changes from small to large, forming a vacuum to suck in the liquid, and the volume of the space on the side where the gears are meshing changes from large to small, squeezing the liquid into the pipeline. The suction chamber and the discharge chamber are separated by the meshing line of the two gears. The pressure at the discharge port of the gear pump depends entirely on the size of the resistance at the pump outlet. When the gear pump is working, the driving wheel rotates with the motor and drives the driven wheel to rotate.

[0004] However, the existing gear pump external meshing gear pump has a large leakage. When the external meshing gear is running, there are three leakage paths: the first is the gear top clearance, the second is the side clearance, and the third is the meshing clearance, among which the end face side clearance has a larger leakage. Utility Model Content

[0005] The utility model provides a small gear pump suitable for mechanical industrial manufacturing, aiming to solve the existing problems.

[0006] The utility model is implemented as follows: a small gear pump suitable for mechanical industry manufacturing, the small gear pump suitable for mechanical industry manufacturing comprises: a gear pump housing, two opposite side walls of the gear pump housing are respectively provided with an oil inlet and an oil outlet, the oil inlet and the oil outlet are communicated through an oil channel, two connecting rods are connected to the inner walls on both sides of the oil channel through bearings, two gears are sleeved on the two connecting rods, one of the connecting shafts passes through the side wall of the gear pump housing and is connected to a rotating motor, the rotating motor is fixedly connected to the outer wall of the gear pump housing, a baffle is arranged between each gear and the inner walls on both sides of the gear pump housing, the two baffles are fixedly connected to the inner wall of the gear pump housing, a connecting groove is opened on one side of the two baffles facing the gear, and an embedded block is fixedly connected to the two side walls of the gear facing the baffle, the embedded block is adapted to the connecting groove, and the embedded block is embedded in the connecting groove and rotates in the connecting groove.

[0007] Preferably, the two gears have the same specifications.

[0008] Preferably, two rubber rings are fixedly connected to the outer side walls of the two gears, and the tooth parts of the two rubber rings are meshed with each other. The outer wall of one of the rubber rings is provided with a plurality of meshing protrusions, and the outer wall of the other rubber ring is provided with a plurality of meshing grooves adapted to the meshing protrusions. The plurality of meshing protrusions correspond one-to-one to the plurality of meshing grooves, and the meshing protrusions are embedded in the meshing grooves during the rotation of the two gears.

[0009] Preferably, the connecting groove is an annular groove.

[0010] Preferably, the embedded block is an annular protruding block.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The small gear pump suitable for mechanical industrial manufacturing is provided with a plurality of baffles to fill the gap between the gear and the gear pump housing, thereby reducing side clearance leakage; in addition, two rubber rings are provided on the outer side walls of the two gears, and a plurality of meshing protrusions on the outer walls of the two rubber rings mesh with a plurality of meshing grooves, thereby reducing the leakage of the meshing clearance between the teeth when the gear pump is working, and can improve the conveying efficiency of the gear pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the internal structure of the shell of the utility model;

[0016] Figure 3 yes Figure 1 Schematic diagram of the enlarged structure of part A.

[0017] The numbers in the accompanying drawings are: 1, gear pump housing; 2, gear; 3, oil inlet; 4, oil outlet; 5, baffle; 6, embedded block; 7, connecting groove; 8, rubber ring; 9, meshing protrusion block; 10, meshing groove. DETAILED DESCRIPTION

[0018] In order to more fully understand the technical content of the utility model, the technical solution of the utility model is further introduced and illustrated in conjunction with specific embodiments below, but it is not limited to this. The technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the utility model.

[0019] In the description of the embodiments of the present utility model, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate an orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, it is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0020] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be connected, detachably connected, or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] Example 1

[0022] refer to Figures 1 to 3The small gear pump suitable for manufacturing in the machinery industry comprises: a gear pump housing 1, a gear 2, an oil inlet 3, an oil outlet 4, a baffle 5, an embedding block 6, a connecting groove 7, a rubber ring 8, a plurality of meshing protrusion blocks 9 and a meshing groove 10. The opposite side walls of the gear pump housing 1 are respectively provided with an oil inlet 3 and an oil outlet 4. The oil inlet 3 and the oil outlet 4 are connected through an oil channel. Two connecting rods are connected to the inner walls of the oil channel on both sides through bearings. Two gears 2 are sleeved on the two connecting rods. The two gears 2 have the same specifications. Two rubber rings 8 are fixedly connected to the outer side walls of the two gears 2. The tooth parts of the two rubber rings 8 are meshed. The outer wall of one of the rubber rings 8 is provided with a plurality of meshing protrusion blocks 9, and the outer wall of the other rubber ring 8 is provided with a plurality of meshing grooves 10 matched with the meshing protrusion blocks 9. The plurality of meshing protrusion blocks 9 correspond to the plurality of meshing grooves 10 one by one. When the two gears 2 rotate, the meshing protrusions The block 9 is embedded in the meshing groove 10, and the two gears 2 are coaxially matched with the gear pump housing 1 through the connecting rod, one of the connecting shafts passes through the side wall of the gear pump housing 1 and is connected to a rotating motor, and the rotating motor is fixedly connected to the outer wall of the gear pump housing 1, and a baffle 5 is arranged between each gear 2 and the inner walls on both sides of the gear pump housing 1, and the two baffles 5 are fixedly connected to the inner wall of the gear pump housing 1, and the baffle 5 is used to fill the gap between the gear 2 and the inner wall of the gear pump housing 1 to reduce side gap leakage, and the two baffles 5 are provided with a connecting groove 7 on one side facing the gear 2, and the connecting groove 7 is an annular groove, and the two side walls of the gear 2 facing the baffle 5 are fixedly connected with an embedded block 6, which is adapted to the connecting groove 7, and the embedded block 6 is an annular protrusion block, and the embedded block 6 is embedded in the connecting groove 7 and rotates in the connecting groove 7, and the two gears 2 rotate together from the oil inlet 3 to the oil outlet 4, generating suction to suck the oil from the oil inlet 3, and then discharge it through the oil outlet 4.

[0023] It should be noted that the electrical components appearing in this application document are all electrically connected to the external main controller and 220V AC power, and the main controller can be a conventional known device that controls a servo motor, contact sensor, processor, alarm module and drive module. The standard parts used in this application document can all be purchased from the market, and the specific connection methods of each part are connected by conventional means such as mature bolts, rivets, welding, etc. in the prior art. In addition, the machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, so no specific description will be made here.

[0024] The embodiments described above are only part of the embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any ordinary technician in the field can make equivalent substitutions or changes within the technical scope disclosed by the present invention according to the technical solution and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A small gear pump suitable for mechanical industry manufacturing, characterized in that: The small gear pump suitable for manufacturing in the mechanical industry comprises: a gear pump housing (1); two opposite side walls of the gear pump housing (1) are respectively provided with an oil inlet (3) and an oil outlet (4); the oil inlet (3) and the oil outlet (4) are communicated with each other through an oil channel; two connecting rods are connected to the inner walls of the two sides of the oil channel through bearings; two gears (2) are sleeved on the two connecting rods; one connecting shaft passes through the side wall of the gear pump housing (1) and is connected to a rotating motor; the rotating motor is fixedly connected to the outer wall of the gear pump housing (1); two baffles (5) are arranged between each gear (2) and the inner walls of the gear pump housing (1) on both sides; the two baffles (5) are fixedly connected to the inner wall of the gear pump housing (1); a connecting groove (7) is provided on one side of the two baffles (5) facing the gear (2); an embedded block (6) is fixedly connected to the two side walls of the gear (2) facing the baffle (5); the embedded block (6) is matched with the connecting groove (7); the embedded block (6) is embedded in the connecting groove (7) and rotates in the connecting groove (7).

2. The small gear pump suitable for mechanical industry manufacturing as claimed in claim 1, characterized in that: The two gears (2) have the same specifications.

3. The small gear pump suitable for mechanical industry manufacturing as claimed in claim 2, characterized in that: Two rubber rings (8) are fixedly connected to the outer walls of the two gears (2), and the toothed parts of the two rubber rings (8) are meshed with each other. The outer wall of one of the rubber rings (8) is provided with a plurality of meshing protrusions (9), and the outer wall of the other rubber ring (8) is provided with a plurality of meshing grooves (10) matched with the meshing protrusions (9). The plurality of meshing protrusions (9) correspond to the plurality of meshing grooves (10) one by one, and the meshing protrusions (9) are embedded in the meshing grooves (10) during the rotation of the two gears (2).

4. The small gear pump suitable for mechanical industry manufacturing as claimed in claim 1, characterized in that: The connecting groove (7) is an annular groove.

5. The small gear pump suitable for mechanical industry manufacturing as claimed in claim 1, characterized in that: The embedded block (6) is an annular protruding block.

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