Gear pump

Abstract

The utility model provides a gear pump which comprises a motor, a gear chamber is installed at one end of the motor, a first gear and a second gear which are meshed with each other are rotatably installed in the gear chamber, a sealing cover is arranged on the side, away from the motor, of the gear chamber, and a plurality of first round holes are formed in the face, facing the sealing cover, of the gear chamber. A plurality of second round holes aligned with the first round holes are formed in one face of the sealing cover, a blocking plate is arranged on the side, away from the gear chamber, of the sealing cover, a space used for inserting a hacksaw blade exists between the blocking plate and the sealing cover, and a plurality of third round holes aligned with the second round holes are formed in one face of the blocking plate. A first screw is inserted in a channel formed by the third round hole, the second round hole and the first round hole, one end of the first screw is in threaded connection with a first nut, and a plurality of pressing blocks making contact with the sealing cover are installed on the face, facing the sealing cover, of the blocking plate. The gear chamber sealing cover has the advantages that a standby mode is provided for disassembling the screw and the nut which limit the relative position of the sealing cover and the gear chamber.

Description

Technical Field

[0001] This utility model relates to a gear pump and belongs to the field of gear pump technology. Background Technology

[0002] Gear pumps operate based on the volumetric changes between gears to transfer liquid. When two gears rotate within the pump body, they create a low-pressure zone at the inlet, drawing in liquid. As the gears continue to rotate, the liquid is carried into the enclosed space between the gears and moves along the inner wall of the pump casing to the outlet. During this process, the gradually decreasing space generates high pressure, ultimately forcing the liquid out. One side of the gear chamber in the gear pump requires a sealing cover installed using multiple screws and nuts. After installation, the sealing cover and gear chamber are positioned between the screw heads and nuts, creating gaps between the screw heads and the sealing cover, and between the nuts and the gear chamber. If the screws and nuts restricting the relative position of the sealing cover and gear chamber cannot be properly separated, it hinders the maintenance or replacement of the gears within the gear chamber, making it difficult to disassemble the sealing cover and gear chamber. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a gear pump to solve the problems mentioned in the background art. This utility model provides an alternative method for disassembling the screws and nuts that limit the relative position of the sealing cover and the gear chamber.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a gear pump, including a motor, with a gear chamber mounted at one end of the motor. A first gear and a second gear, meshing with each other, are rotatably mounted inside the gear chamber. The second gear is connected to the output shaft of the motor. A sealing cover is provided on the side of the gear chamber facing away from the motor. An inlet pipe connector and an outlet pipe connector are mounted on the side of the sealing cover facing away from the gear chamber. Multiple first circular holes are formed on the side of the gear chamber facing the sealing cover, and multiple second circular holes aligned with the first circular holes are formed on one side of the sealing cover. A baffle plate is provided on the side away from the gear chamber. There is space between the baffle plate and the sealing cover for inserting a hacksaw blade. The baffle plate is connected to the motor through a connector. Two through holes are opened on one side of the baffle plate. The water inlet pipe connector and the water outlet pipe connector pass through the two through holes respectively. Multiple third round holes are opened on one side of the baffle plate, which are aligned with the second round hole. A first screw is inserted in the channel formed by the third round hole, the second round hole and the first round hole. A first nut is threaded to one end of the first screw. Multiple pressure blocks that contact the sealing cover are installed on the side of the baffle plate facing the sealing cover.

[0005] Furthermore, the connecting member includes a connecting plate, one end of the blocking plate is equipped with the connecting plate, and the end of the connecting plate away from the blocking plate is connected and fixed with a second semi-circular ring. A first semi-circular ring is provided on one side of the second semi-circular ring. The two ends of the first semi-circular ring are respectively connected to the two ends of the second semi-circular ring by fasteners formed by a second screw and a second nut. The motor is inserted into the space formed by the first semi-circular ring and the second semi-circular ring. A first limiting ring and a second limiting ring are respectively provided on both sides of the first semi-circular ring. The first limiting ring and the second limiting ring are both sleeved on the motor and connected and fixed to the motor.

[0006] Furthermore, both ends of the first semicircular ring are connected and fixed with a first lug with a hole, and both ends of the second semicircular ring are connected and fixed with a second lug with a hole. There is a gap between the first lug and the second lug, and the first lug is connected to the second lug by a fastener formed by a second screw and a second nut.

[0007] Furthermore, the first lug and the first semicircular ring are integrally formed, and the second lug and the second semicircular ring are integrally formed.

[0008] Furthermore, the connecting plate has a U-shaped structure, and the connecting plate and the blocking plate are integrally formed.

[0009] Furthermore, the side of the gear chamber facing the sealing cover is recessed to form a sealing groove, and a sealing ring that fits into the sealing cover is inserted in the sealing groove.

[0010] The beneficial effects of this utility model are:

[0011] 1. The structure formed by the first semicircular ring and the second semicircular ring is fitted onto the motor, and the first limiting ring and the second limiting ring are used to limit the relative position of the first semicircular ring, the second semicircular ring and the motor, thereby limiting the position of the connecting plate and the motor. That is, the position of the blocking plate is limited, so that the blocking plate can be installed or not installed as needed.

[0012] 2. When the relative position of the baffle plate and the motor is restricted, there is a gap between the baffle plate and the sealing cover. The first screw passes through the channel formed by the third round hole, the second round hole and the first round hole and is then screwed on with the first nut. At this time, the pressure block presses on the sealing cover, thus restricting the relative position of the sealing cover and the gear chamber. When the first screw and the first nut cannot be properly separated due to corrosion or other reasons, the hacksaw blade can be inserted into the gap between the baffle plate and the sealing cover to cut off the first screw. This provides an alternative way to separate the sealing cover and the gear chamber, and facilitates the maintenance and replacement of the first gear, the second gear or the sealing ring. Attached Figure Description

[0013] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0014] Figure 1 This is a schematic diagram of the structure of a gear pump according to the present invention;

[0015] Figure 2 This is an assembly diagram of the first gear, second gear, gear chamber, and motor in a gear pump according to the present invention.

[0016] Figure 3 This is an assembly diagram of the inlet pipe joint, outlet pipe joint, and sealing cap in a gear pump according to the present invention.

[0017] Figure 4 This is an assembly diagram of the first semi-circular ring, the second semi-circular ring, the connecting plate, and the baffle plate in a gear pump according to the present invention.

[0018] In the diagram: 1-Motor, 2-First limiting ring, 3-First semi-circular ring, 4-Second limiting ring, 5-Gear chamber, 6-Pressure block, 7-Blocking plate, 8-Outlet pipe connector, 9-Inlet pipe connector, 10-First screw, 11-Connecting plate, 12-First nut, 13-Second semi-circular ring, 14-Second nut, 15-Second lug, 16-First lug, 17-Second screw, 18-First gear, 19-Sealing ring, 20-First round hole, 21-Second gear, 22-Second round hole, 23-Through hole, 24-Third round hole, 25-Sealing cover. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0020] Please see Figures 1-3 This utility model provides a technical solution: a gear pump, including a motor 1, a gear chamber 5 installed at one end of the motor 1, a first gear 18 and a second gear 21 rotatably mounted in the gear chamber 5, the second gear 21 being connected to the output shaft of the motor 1, a sealing cover 25 provided on the side of the gear chamber 5 away from the motor 1, an inlet pipe connector 9 and an outlet pipe connector 8 installed on the side of the sealing cover 25 away from the gear chamber 5, a sealing groove is recessed on the side of the gear chamber 5 facing the sealing cover 25, a sealing ring 19 fitting against the sealing cover 25 is inserted in the sealing groove, and the sealing performance between the gear chamber 5 and the sealing cover 25 is improved by installing the sealing ring 19 between the gear chamber 5 and the sealing cover 25.

[0021] See Figure 1 , Figure 2 and Figure 4The gear chamber 5 has multiple first circular holes 20 on the side facing the sealing cover 25, and multiple second circular holes 22 aligned with the first circular holes 20 on the other side of the sealing cover 25. A baffle plate 7 is provided on the side of the sealing cover 25 away from the gear chamber 5. There is space between the baffle plate 7 and the sealing cover 25 for inserting a hacksaw blade. A connecting plate 11 is installed at one end of the baffle plate 7. The connecting plate 11 has a U-shaped structure and is integrally formed with the baffle plate 7. A second semi-circular ring 13 is connected and fixed to the end of the connecting plate 11 away from the baffle plate 7. A first semi-circular ring 3 is provided on one side of the second semi-circular ring 13. The two ends of the first semi-circular ring 3 are fastened to by fasteners formed by second screws 17 and second nuts 14. The two ends of the second semicircular ring 13 are connected. The motor 1 is installed in the space formed by the first semicircular ring 3 and the second semicircular ring 13. The first semicircular ring 3 has a first limiting ring 2 and a second limiting ring 4 on its two sides respectively. The first limiting ring 2 and the second limiting ring 4 are both sleeved on the motor 1 and connected and fixed to the motor 1, so that the structure formed by the first semicircular ring 3 and the second semicircular ring 13 is sleeved on the motor 1. The first limiting ring 2 and the second limiting ring 4 are used to limit the relative position of the first semicircular ring 3, the second semicircular ring 13 and the motor 1, thereby limiting the position of the connecting plate 11 and the motor 1. That is, the position of the blocking plate 7 is limited, so that the blocking plate 7 can be installed or not installed as needed.

[0022] See Figure 1 and Figure 4 Both ends of the first semicircular ring 3 are connected and fixed with a first lug 16 with holes. The first lug 16 and the first semicircular ring 3 are integrally formed. Both ends of the second semicircular ring 13 are connected and fixed with a second lug 15 with holes. The second lug 15 and the second semicircular ring 13 are integrally formed. There is a gap between the first lug 16 and the second lug 15. The first lug 16 is connected to the second lug 15 by a fastener formed by the second screw 17 and the second nut 14. When the second screw 17 and the second nut 14 cannot be properly separated by tools such as wrenches, the second screw 17 can be cut off by sawing with a hacksaw blade.

[0023] See Figures 1-4The baffle plate 7 has two through holes 23 on one side, through which the inlet pipe connector 9 and the outlet pipe connector 8 pass respectively. The baffle plate 7 also has multiple third round holes 24 aligned with the second round hole 22. A first screw 10 is inserted into the channel formed by the third round hole 24, the second round hole 22, and the first round hole 20. One end of the first screw 10 is threaded with a first nut 12. Multiple pressure blocks 6 are installed on the side of the baffle plate 7 facing the sealing cover 25, contacting the sealing cover 25. When the relative position of the baffle plate 7 and the motor 1 is restricted, a gap exists between the baffle plate 7 and the sealing cover 25. After the first screw 10 passes through the channel formed by the third round hole 24, the second round hole 22 and the first round hole 20, the first nut 12 is screwed on. At this time, the pressure block 6 presses on the sealing cover 25, thus restricting the relative position of the sealing cover 25 and the gear chamber 5. When the first screw 10 and the first nut 12 cannot be properly separated due to corrosion or other reasons, the hacksaw blade can be inserted into the gap between the blocking plate 7 and the sealing cover 25 to cut off the first screw 10. This provides an alternative way to separate the sealing cover 25 and the gear chamber 5, and facilitates the maintenance and replacement of the first gear 18, the second gear 21 or the sealing ring 19.

[0024] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A gear pump, comprising a motor (1), characterized in that: A gear chamber (5) is installed at one end of the motor (1). A first gear (18) and a second gear (21) are rotatably mounted in the gear chamber (5). The second gear (21) is connected to the output shaft of the motor (1). A sealing cover (25) is provided on the side of the gear chamber (5) away from the motor (1). A water inlet pipe connector (9) and a water outlet pipe connector (8) are installed on the side of the sealing cover (25) away from the gear chamber (5). A plurality of first round holes (20) are opened on the side of the gear chamber (5) facing the sealing cover (25). A plurality of second round holes (22) aligned with the first round holes (20) are opened on the side of the sealing cover (25). A baffle plate (7) is provided on the side of the sealing cover (25) away from the gear chamber (5). (7) There is a space between the blocking plate (7) and the sealing cover (25) for inserting a hacksaw blade. The blocking plate (7) is connected to the motor (1) through a connector. The blocking plate (7) has two through holes (23) on one side. The water inlet pipe connector (9) and the water outlet pipe connector (8) pass through the two through holes (23) respectively. The blocking plate (7) has multiple third round holes (24) that are aligned with the second round hole (22) on one side. A first screw (10) is inserted in the channel formed by the third round hole (24), the second round hole (22) and the first round hole (20). A first nut (12) is threaded to one end of the first screw (10). Multiple pressure blocks (6) that contact the sealing cover (25) are installed on the side of the blocking plate (7) facing the sealing cover (25).

2. A gear pump according to claim 1, characterized in that: The connector includes a connecting plate (11). The connecting plate (11) is installed on one end of the blocking plate (7). The end of the connecting plate (11) away from the blocking plate (7) is connected and fixed with a second semi-circular ring (13). A first semi-circular ring (3) is provided on one side of the second semi-circular ring (13). The two ends of the first semi-circular ring (3) are connected to the two ends of the second semi-circular ring (13) respectively by fasteners formed by the second screw (17) and the second nut (14). The motor (1) is inserted into the space formed by the first semi-circular ring (3) and the second semi-circular ring (13). A first limiting ring (2) and a second limiting ring (4) are provided on both sides of the first semi-circular ring (3). The first limiting ring (2) and the second limiting ring (4) are both sleeved on the motor (1) and connected and fixed to the motor (1).

3. A gear pump according to claim 2, characterized in that: Both ends of the first semicircular ring (3) are connected and fixed with a first ear (16) with a hole, and both ends of the second semicircular ring (13) are connected and fixed with a second ear (15) with a hole. There is a gap between the first ear (16) and the second ear (15). The first ear (16) is connected to the second ear (15) by a fastener formed by the second screw (17) and the second nut (14).

4. A gear pump according to claim 3, characterized in that: The first ear (16) and the first semicircular ring (3) are integrally formed, and the second ear (15) and the second semicircular ring (13) are integrally formed.

5. A gear pump according to claim 2, characterized in that: The connecting plate (11) has a U-shaped structure, and the connecting plate (11) and the blocking plate (7) are integrally formed.

6. A gear pump according to claim 1, characterized in that: The gear chamber (5) has a recessed sealing groove on the side facing the sealing cover (25), and a sealing ring (19) that fits into the sealing cover (25) is inserted in the sealing groove.

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