Sealing structure of gear pump

Abstract

The utility model discloses a sealing structure of a gear pump, which comprises a gear pump body, the top of the gear pump body is fixedly connected with a connecting plate, the upper surface of the connecting plate is fixedly connected with a lantern ring, a rotating shaft of the gear pump body penetrates through the connecting plate and the lantern ring, and the circumferential outer wall of the rotating shaft of the gear pump body is in key connection with a rotating block. The outer side of the lantern ring is sleeved with a shell, a through hole is formed in the top of the shell, a rotating shaft of the gear pump body penetrates through the through hole, an oil seal is fixedly connected into the through hole, and a sealing ring is fixedly connected to the bottom of the shell. According to the gear pump, double sealing of the gear pump can be achieved, the sealing effect of the gear pump is improved, the shell can be prevented from moving, the shell can cover the lantern ring more stably, the sealing stability of the gear pump is improved, the sliding base can be prevented from being separated from the inserting rod, and the sealing stability of the gear pump is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gear pumps, in particular to a sealing structure of a gear pump. Background Art

[0002] A gear pump is a rotary pump that relies on the change and movement of the working volume formed between the pump cylinder and the meshing gears to transport liquid or increase its pressure.

[0003] In actual use, although the gear pump can achieve basic conveying effects, when sealing the interior of the gear pump, a rubber ring is generally added between the outer casing and the cover plate to achieve the sealing effect. There are no other sealing components for auxiliary sealing, resulting in some lubricating oil leaking from the shaft when the pressure of the gear pump is high. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a sealing structure for a gear pump.

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

[0006] A sealing structure of a gear pump comprises a gear pump body, the top of the gear pump body is fixedly connected to a connecting plate, the upper surface of the connecting plate is fixedly connected to a collar, and the rotating shaft of the gear pump body passes through the connecting plate and the collar, the circumferential outer wall key of the rotating shaft of the gear pump body is connected to a rotating block, and the rotating block rotates in the collar, the outer side of the collar is sleeved with a shell, the top of the shell is provided with a through hole, and the rotating shaft of the gear pump body passes through the through hole, an oil seal is fixedly connected in the through hole, the bottom of the shell is fixedly connected to a sealing ring, and the upper surface of the connecting plate is provided with a limit assembly to position the shell.

[0007] As a further solution of the utility model, the limit assembly includes two fixed plates, the two fixed plates are fixedly connected to the upper surface of the connecting plate, the two connecting plates are fixedly connected to springs on opposite sides, one end of the spring is fixedly connected to a sliding seat, a second socket is provided on one side of the sliding seat, two symmetrically distributed plug rods are fixedly connected to the circumferential outer wall of the shell, and the plug rods are plugged into the second sockets, and an interlocking assembly is provided on the top of the sliding seat to fix the plug rod and the sliding seat.

[0008] As a further solution of the utility model, the plug-in assembly includes a sliding hole, which is opened on the top of the sliding seat and is connected to the second socket. A latch is slidably connected in the sliding hole, a first socket is opened on the top of the plug rod, and the latch is plugged into the first socket.

[0009] As a further solution of the utility model, a magnetic block is fixedly connected to one side of the latch, an iron sheet is fixedly connected to the top of the slide seat, and the magnetic block and the iron sheet are adsorbed.

[0010] As a further solution of the utility model, a pull ring for pulling the bolt to move is fixedly connected to the top end of the bolt.

[0011] As a further solution of the utility model, one side opposite to the two fixed plates is fixedly connected with a multi-section telescopic rod, and the multi-section telescopic rod is fixed to the sliding seat.

[0012] As a further solution of the utility model, a plurality of mounting holes are opened on the upper surface of the connecting plate, and the plurality of mounting holes are evenly distributed.

[0013] The beneficial effects of the utility model are:

[0014] 1. Through the coordinated use of oil seal and sealing ring, the housing is covered on the outside of the collar. At this time, the oil seal will seal the gap between the housing and the gear pump shaft, and the sealing ring will seal the gap between the housing and the connecting plate, thereby realizing the double sealing of the gear pump and improving the sealing effect of the gear pump.

[0015] 2. Through the setting of the limit assembly, the limit assembly can limit the housing, thereby preventing the housing from moving, making the housing cover the collar more stably, and improving the stability of the gear pump seal.

[0016] 3. Through the setting of the plug-in assembly, the plug-in assembly can achieve a stable connection between the slide seat and the plug rod, thereby preventing the slide seat and the plug rod from being separated, and further improving the stability of the gear pump seal. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional structural schematic diagram of a sealing structure of a gear pump proposed by the utility model;

[0018] Figure 2 It is a partially enlarged structural schematic diagram of a sealing structure of a gear pump proposed by the utility model;

[0019] Figure 3 This is a schematic diagram of the enlarged structure of a pull ring of a sealing structure of a gear pump proposed by the utility model.

[0020] In the figure: 1. gear pump body; 2. connecting plate; 3. iron sheet; 4. sliding seat; 5. sealing ring; 6. housing; 7. oil seal; 8. magnetic block; 9. latch; 10. first socket; 11. plug rod; 12. collar; 13. rotating block; 14. pull ring; 15. second socket; 16. multi-section telescopic rod; 17. spring. DETAILED DESCRIPTION

[0021] It should be noted that the terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence, so that the embodiments of the application described here, based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of this application.

[0022] Reference Figure 1-Figure 3 A sealing structure of a gear pump comprises a gear pump body 1, a connecting plate 2 is fixed to the top of the gear pump body 1 by bolts, a collar 12 is welded to the upper surface of the connecting plate 2, and the rotating shaft of the gear pump body 1 passes through the connecting plate 2 and the collar 12, a rotating block 13 is connected to the circumferential outer wall of the rotating shaft of the gear pump body 1 by a key, and the rotating block 13 is rotated in the collar 12, a housing 6 is sleeved on the outer side of the collar 12, a through hole is opened on the top of the housing 6, and the rotating shaft of the gear pump body 1 passes through the through hole, an oil seal 7 is bonded in the through hole, and the bottom of the housing 6 A sealing ring 5 is bonded, and a limiting component is provided on the upper surface of the connecting plate 2 to position the housing 6. The housing 6 is covered on the outside of the collar 12, and the rotating shaft of the gear pump body 1 passes through the through hole on the housing 6. The housing 6 is then limited by the limiting component. At this time, the oil seal 7 in the through hole of the housing 6 will seal the gap between the housing 6 and the rotating shaft of the gear pump body 1, and the sealing ring 5 at the bottom of the housing 6 will seal the gap between the housing 6 and the connecting plate 2, thereby realizing double sealing of the gear pump and improving the sealing effect of the gear pump.

[0023] The limiting assembly includes two fixed plates, both of which are welded to the upper surface of the connecting plate 2, and springs 17 are welded on the opposite sides of the two connecting plates 2, and a slide 4 is welded on one end of the spring 17, and a second socket 15 is opened on one side of the slide 4, and two symmetrically distributed plug rods 11 are welded on the circumferential outer wall of the shell 6, and the plug rods 11 are plugged into the second socket 15, and the opposite sides of the two fixed plates are fixed with multi-section telescopic rods 16 by bolts, and the multi-section telescopic rods 16 are fixed to the slide 4, and the slide 4 is pulled to move, and the slide 4 will squeeze the spring 17. After the shell 6 is put away, the slide 4 is released. At this time, the slide 4 will reset and move under the action of the spring 17, so that the plug rod 11 on the shell 6 is inserted into the second socket 15 on the slide 4, and the shell 6 is limited. During the movement of the slide 4, the multi-section telescopic rod 16 will be contracted or extended, so that the slide 4 can move horizontally.

[0024] In the utility model, a plug-in assembly is provided at the top of the slide 4, so that the plug rod 11 and the slide 4 are fixed, and the plug-in assembly includes a sliding hole, which is opened at the top of the slide 4, and the sliding hole is connected to the second socket 15, and a plug pin 9 is slidably connected in the sliding hole, and a first socket 10 is opened at the top of the plug rod 11, and the plug pin 9 is plugged with the first socket 10, and a magnetic block 8 is bonded to one side of the plug pin 9, and an iron sheet 3 is welded on the top of the slide 4, and the magnetic block 8 is adsorbed on the iron sheet 3, and the plug pin 9 is inserted into the plug rod 11. The first socket 10 is inserted into the first socket 10, thereby fixing the slide 4 and the plug rod 11 to prevent the slide 4 from being separated from the plug rod 11. When the latch 9 is inserted into the plug rod 11, the magnetic block 8 on the latch 9 will be adsorbed with the iron sheet 3 on the slide 4, so that the position of the latch 9 can be fixed. A pull ring 14 for pulling the latch 9 to move is welded on the top of the latch 9. The latch 9 can be moved by pulling the pull ring 14. A plurality of mounting holes are opened on the upper surface of the connecting plate 2, and the plurality of mounting holes are evenly distributed.

[0025] Working principle: When it is needed, the shell 6 is covered on the outside of the ring 12, and the rotating shaft of the gear pump body 1 is passed through the through hole on the shell 6, and then the plug rod 11 on the shell 6 is passed through the second socket 15 on the slide 4 to limit the shell 6, and then the pin 9 is inserted into the first socket 10 on the plug rod 11, so as to fix the slide 4 and the plug rod 11 to prevent the slide 4 from being separated from the plug rod 11. When the plug pin 9 is inserted into the plug rod 11, the magnetic block 8 on the plug pin 9 will be adsorbed with the iron sheet 3 on the slide 4, so that the position of the plug pin 9 can be fixed. At this time, the oil seal 7 in the through hole of the shell 6 will seal the gap between the shell 6 and the rotating shaft of the gear pump body 1, and the sealing ring 5 at the bottom of the shell 6 will seal the gap between the shell 6 and the connecting plate 2, thereby realizing the double sealing of the gear pump and improving the sealing effect of the gear pump.

[0026] The present invention has been described through the above-mentioned embodiments. Those skilled in the art will appreciate that the present invention is not limited to the above-mentioned embodiments, and more modifications may be made according to the teachings of the present invention. These modifications are all within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A sealing structure of a gear pump, comprising a gear pump body (1), characterized in that: The top of the gear pump body (1) is fixedly connected to a connecting plate (2), the upper surface of the connecting plate (2) is fixedly connected to a sleeve ring (12), and the rotating shaft of the gear pump body (1) passes through the connecting plate (2) and the sleeve ring (12). The circumferential outer wall key of the rotating shaft of the gear pump body (1) is connected to a rotating block (13), and the rotating block (13) is located in the sleeve ring (12) and rotates. The outer side of the sleeve ring (12) is sleeved with a shell (6), the top of the shell (6) is provided with a through hole, and the rotating shaft of the gear pump body (1) passes through the through hole, and an oil seal (7) is fixedly connected in the through hole. The bottom of the shell (6) is fixedly connected to a sealing ring (5), and the upper surface of the connecting plate (2) is provided with a limit assembly to position the shell (6).

2. A sealing structure for a gear pump according to claim 1, characterized in that: The limit assembly comprises two fixing plates, both of which are fixedly connected to the upper surface of the connecting plate (2), and springs (17) are fixedly connected to opposite sides of the two connecting plates (2), one end of the spring (17) is fixedly connected to a sliding seat (4), and a second socket (15) is provided on one side of the sliding seat (4), and two symmetrically distributed plug rods (11) are fixedly connected to the circumferential outer wall of the shell (6), and the plug rods (11) are plugged into the second sockets (15), and a plug-in assembly is provided on the top of the sliding seat (4) to fix the plug rods (11) and the sliding seat (4).

3. A sealing structure for a gear pump according to claim 2, characterized in that: The plug-in assembly comprises a sliding hole, the sliding hole is opened at the top of the sliding seat (4), and the sliding hole is connected to the second socket (15), a latch (9) is slidably connected in the sliding hole, a first socket (10) is opened at the top of the plug rod (11), and the latch (9) is plugged into the first socket (10).

4. A sealing structure for a gear pump according to claim 3, characterized in that: A magnetic block (8) is fixedly connected to one side of the latch pin (9), an iron sheet (3) is fixedly connected to the top of the slide seat (4), and the magnetic block (8) is adsorbed onto the iron sheet (3).

5. The sealing structure of a gear pump according to claim 4, characterized in that: A pull ring (14) is fixedly connected to the top end of the latch pin (9) and is used to pull the latch pin (9) to move.

6. The sealing structure of a gear pump according to claim 2, characterized in that: The two opposite sides of the two fixed plates are both fixedly connected with a multi-section telescopic rod (16), and the multi-section telescopic rod (16) is fixed to the slide seat (4).

7. The sealing structure of a gear pump according to claim 1, characterized in that: The upper surface of the connecting plate (2) is provided with a plurality of mounting holes, and the plurality of mounting holes are evenly distributed.

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