Compact gear pump

Abstract

The utility model relates to a gear pump, in particular to a compact gear pump which comprises a plate body assembly, a gear plate and a rear plate, the plate body assembly comprises a front plate, a gear plate and a rear plate, the front plate and the rear plate are oppositely arranged, the gear plate is arranged between the front plate and the rear plate, and a mounting groove is formed in the side, away from the gear plate, of the rear plate; the sealing piece is arranged in the mounting groove, a third cavity is formed in the side, close to the front plate, of the sealing piece, a first protruding part is arranged on the bottom wall forming the third cavity, a fourth cavity is further formed in the side, close to the front plate, of the first protruding part, and a groove is formed in the side, away from the front plate, of the sealing piece; a second protruding part is arranged on the bottom wall forming the groove, an opening is formed in the end, away from the first protruding part, of the second protruding part, and the opening is communicated with the fourth cavity. According to the utility model, the advantages of convenience in use, double-tip structure of the sealing element and compact layout can be realized by effectively utilizing the structural configuration of the sealing element.

Description

Technical Field

[0001] The present application relates to a gear pump, and more particularly to a compact gear pump. Background Art

[0002] Our company's previous seal structure used a single-tip seal. However, during the application process, the single-tip seal is more likely to rupture due to excessive pressure of the fluid material, causing the fluid material to flow through the seal to the outside. In order to solve this problem on the wall, we previously added a seal to solve it, which caused the product to bulge out a large piece. Therefore, there is a need to provide a compact gear pump that is easy to use, has a double-tip seal structure, and a compact layout. Utility Model Content

[0003] The main purpose of the present application is to provide a compact gear pump, wherein the compact gear pump can effectively utilize its own structural configuration to achieve the advantages of a seal having a double-tip structure and a compact layout.

[0004] Another object of the present application is to provide a compact gear pump, wherein the compact gear pump includes a plate assembly, the plate assembly includes a front plate, a gear plate, a rear plate and a seal, the front plate and the rear plate are arranged opposite to each other, and the gear plate is arranged between the front plate and the rear plate, the rear plate has a mounting groove on the side away from the gear plate, the seal is arranged in the mounting groove, and the seal has a third cavity on the side close to the front plate, and the bottom wall forming the third cavity has a first protrusion, the first protrusion is close to the A fourth cavity is also provided on the side near the front plate, and a groove is provided on the side of the seal away from the front plate, and the bottom wall forming the groove has a second protrusion, and the end of the second protrusion facing away from the first protrusion has an opening, and the opening is connected to the fourth cavity, wherein the seal has a double-tip structure, and the first gear shaft of the compact gear pump passes through the seal, and the double-tip structure can abut against the surface of the first gear shaft to improve the sealing performance of the seal, thereby reducing the number of seals used there, and thereby improving the compactness of the product.

[0005] Another object of the present application is to provide a compact gear pump, wherein the compact gear pump has a simple structure, is easy to operate, does not involve complex manufacturing processes and expensive materials, has high economy, and is easy to promote and use.

[0006] In order to achieve at least one of the above-mentioned invention objectives, the present application provides a compact gear pump, wherein the compact gear pump comprises:

[0007] a plate assembly comprising a front plate, a gear plate, and a rear plate, wherein the front plate and the rear plate are disposed opposite each other, the gear plate is disposed between the front plate and the rear plate, and a mounting groove is formed on a side of the rear plate facing away from the gear plate; and

[0008] A sealing member is arranged in the mounting groove, and the sealing member has a third cavity on a side close to the front plate, and the bottom wall forming the third cavity has a first protrusion, and the first protrusion also has a fourth cavity on a side close to the front plate, the sealing member has a groove on a side away from the front plate, and the bottom wall forming the groove has a second protrusion, and the second protrusion has an opening at an end facing away from the first protrusion, and the opening is connected to the fourth cavity.

[0009] In one or more embodiments of the present application, the wall forming the opening is a slope.

[0010] In one or more embodiments of the present application, the third cavity has a first connecting cavity and a second connecting cavity, the first connecting cavity is connected to the second connecting cavity, and the second connecting cavity is also connected to the opening, the junction of the first connecting cavity and the second connecting cavity has a first annular tip, and the junction of the second connecting cavity and the opening has a second annular tip.

[0011] In one or more embodiments of the present application, a side of the front plate close to the gear plate is fixedly connected to the wall of the gear plate, and a side of the rear plate close to the gear plate is fixedly connected to the gear plate.

[0012] In one or more embodiments of the present application, the front plate has two first insertion holes arranged vertically, and the two first insertion holes also pass through the front plate. In addition, the gear plate has a first cavity and a second cavity, the first cavity and the second cavity are connected, and the first cavity and the second cavity are arranged vertically and together form an 8-shaped figure, one of the first insertion holes is connected to the first cavity, and the other first insertion hole is connected to the second cavity.

[0013] In one or more embodiments of the present application, the back plate has a second insertion hole, which passes through the back plate and is opposite to the first insertion hole. The second insertion hole is also connected to the first cavity, and the first cavity is located on the upper side of the second cavity.

[0014] In one or more embodiments of the present application, the rear plate further has a third insertion hole on one side close to the gear plate. The third insertion hole is located on the lower side of the second insertion hole and is spaced a predetermined distance from the second insertion hole. The third insertion hole is also connected to the second cavity, and the third insertion hole is a blind hole.

[0015] In one or more embodiments of the present application, the compact gear pump also includes a first gear shaft and a second gear shaft, one end of the first gear shaft is placed at the end of the first insertion hole facing the first cavity, and the other end passes through the second insertion hole and is placed outside, one end of the second gear shaft is placed at the end of the first insertion hole facing the second cavity, and the other end cooperates with the third insertion hole, and the middle sections of the first gear shaft and the above-mentioned second gear shaft are meshed and connected.

[0016] In one or more embodiments of the present application, the compact gear pump further includes a cover plate, which is fixed to the side of the rear plate facing away from the front plate, and the cover plate is configured to close the mounting groove, and the cover plate further includes a connecting hole, and the end of the first gear shaft also passes through the connecting hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] These and / or other aspects and advantages of the present application will become more clear and easier to understand from the following detailed description of the embodiments of the present application in conjunction with the accompanying drawings, in which:

[0018] Figure 1 The figure shows a schematic cross-sectional view of a compact gear pump.

[0019] Figure 2 The figure shows a schematic structural diagram of the front plate.

[0020] Figure 3 Pictured Figure 1 A magnified view of center. DETAILED DESCRIPTION

[0021] The terms and words used in the following description and claims are not limited to the literal meanings, but are merely used by the inventor to enable a clear and consistent understanding of the present application. Therefore, it will be apparent to those skilled in the art that the following description of various embodiments of the present application is provided for illustration purposes only and not for the purpose of limiting the present application as defined by the appended claims and their equivalents.

[0022] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the elements may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0023] Although ordinal numbers such as "first," "second," and the like will be used to describe various components, these are not intended to limit those components. The terms are used solely to distinguish one component from another. For example, a first component could be referred to as a second component, and similarly, a second component could be referred to as a first component without departing from the teachings of the utility model. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0024] The terms used herein are for the purpose of describing various embodiments only and are not intended to be limiting. As used herein, the singular is intended to include the plural, unless the context clearly indicates otherwise. It will also be understood that the terms "comprising" and / or "having" when used in this specification specify the presence of a stated feature, number, step, operation, component, element, or combination thereof, and do not preclude the presence or addition of one or more other features, numbers, steps, operations, components, elements, or groups thereof.

[0025] Schematic compact gear pump

[0026] refer to Figures 1 to 3 According to a preferred embodiment of the present invention, a compact gear pump is provided. It should be noted that the structure of the compact gear pump is as follows: Figure 1 As shown, it includes a plate assembly, which includes a front plate 11, a gear plate 12, and a rear plate 13. The front plate 11 and the rear plate 13 are arranged opposite each other, and the gear plate 12 is arranged between the front plate 11 and the rear plate 13. That is, the side of the front plate 11 close to the gear plate 12 is fixedly connected to the wall surface of the gear plate 12, and the side of the rear plate 13 close to the gear plate 12 is fixedly connected to the gear plate 12. Specifically, the connection method between the front plate and the gear plate is the same as the connection method between the rear plate and the gear plate, that is, both can be implemented as bolt connections.

[0027] Furthermore, the front plate 11 has two first insertion holes 1101 arranged up and down, and the two first insertion holes 1101 also pass through the front plate 11. In addition, the gear plate 12 has a first cavity 1201 and a second cavity 1202, and the first cavity 1201 and the second cavity 1202 are connected, and the first cavity 1201 and the second cavity 1202 are arranged up and down and together form an 8-shaped cavity, that is, two oppositely arranged circular cavities, and their sides close to each other overlap, one of the first insertion holes 1101 is connected to the first cavity 1201, and the other first insertion hole 1101 is connected to the second cavity 1202.

[0028] Furthermore, the rear plate 13 has a second insertion hole 1301 that passes through the rear plate 13 and faces the first insertion hole 1101. The second insertion hole 1301 is also connected to the first cavity 1201. Specifically, the first cavity 1201 is located above the second cavity 1202.

[0029] Furthermore, the rear plate 13 has a third insertion hole 1302 on one side close to the gear plate 12. The third insertion hole 1302 is located on the lower side of the second insertion hole 1301 and is spaced a predetermined distance from the second insertion hole 1301. The third insertion hole 1302 is also connected to the second cavity 1202. Specifically, the third insertion hole 1302 is also implemented as a blind hole.

[0030] It is worth mentioning that the compact gear pump also includes a first gear shaft 21 and a second gear shaft 22, wherein one end of the first gear shaft 21 is placed at the end of the first insertion hole 1101 facing the first cavity 1201, and the other end passes through the second insertion hole 1301 and is placed outside. The end of the first gear shaft 21 placed outside is spaced a predetermined distance from the front plate 11, and the end of the first gear shaft 21 placed outside is configured to cooperate with an external drive device, such as a motor. It should be noted that the middle sections of the first gear shaft 21 and the second gear shaft 22 are meshed and connected, that is, the gear of the first gear shaft 21 is located in the first cavity 1201, and the gear of the second gear shaft 22 is located in the second cavity 1202. One end of the second gear shaft 22 is placed at the end of the first insertion hole 1101 facing the second cavity 1202, and the other end cooperates with the third insertion hole 1302.

[0031] The fluid material is arranged in the first cavity 1201 and the second cavity 1202, that is, the side of the front plate 11 facing away from the gear plate 12 has a feed port 100 and a discharge port 200, and the feed port 100 and the discharge port 200 are both connected to the first cavity 1201 and the second cavity 1202, that is, the material enters from the feed port 100, and is continuously squeezed by gear meshing, and squeezed toward the discharge port 200.

[0032] It should be noted that the side of the rear plate 13 facing away from the gear plate 12 has a mounting groove 1303, and the mounting groove 1303 is also connected to the second insertion hole 1301. Specifically, the mounting groove 1303 is a circular groove, and a seal 30 is also provided in the mounting groove 1303. Specifically, the seal 30 can be implemented as an oil seal.

[0033] Furthermore, the sealing member 30 has a third cavity 301 on the side near the second insertion hole 1301, and the bottom wall forming the third cavity 301 has a first protrusion 31. The first protrusion 31 also has a fourth cavity on the side near the second insertion hole 1301. The sealing member 30 has a groove 302 on the side away from the second insertion hole 1301, and the bottom wall forming the groove 302 has a second protrusion 32. The end of the second protrusion 32 facing away from the first protrusion 31 has an opening 303, and the opening 303 is connected to the fourth cavity. Specifically, the wall forming the opening 303 is an inclined surface. In addition, the third cavity 301 has a first connecting cavity 3011 and a second connecting cavity 3012. The first connecting cavity 3011 is connected to the second connecting cavity 3012, and the second connecting cavity 3012 is also connected to the opening 303.

[0034] It should be noted that the first connecting cavity 3011 and the second connecting cavity 3012 have a first annular tip 300 at their junction, and the second connecting cavity 3012 and the opening 303 have a second annular tip 400 at their junction. Specifically, the end of the first gear shaft 21 away from the first insertion hole 1101 passes through the third cavity 301 and the opening 303 in sequence. Figure 3 As shown, the first annular tip 300 and the second annular tip 400 both abut against the surface of the first gear shaft 21, thereby providing a seal. Specifically, when the gear pump is operating, the fluid flowing in the first cavity 1201 or the second cavity 1202 is guided along the gap between the components into the mounting groove 1303 due to pressure. The seal 30 prevents the fluid from flowing to the outside. It should be noted that our company's previous seal 30 structure employed a single-tip seal, which is prone to rupture during use due to excessive fluid pressure, allowing the fluid to flow through the seal 30 and outward. The present invention employs a dual-tip structure to enhance the sealing performance of the seal 30. Furthermore, a collar 40 is provided on the outer side of the first protrusion 31 to prevent the first fluid cavity from expanding due to pressure, thereby enhancing the strength of the first annular tip 300. It should also be noted that the dual-tip seal 30 structure reduces the number of seals 30, thereby making the gear pump layout more compact.

[0035] Furthermore, the compact gear pump also includes a cover plate 50, which is fixed to the side of the rear plate 13 facing away from the front plate 11, and the cover plate 50 is configured to close the mounting groove 1303, and the cover plate 50 also includes a connecting hole, and the end of the first gear shaft 21 also passes through the connecting hole.

[0036] In summary, the compact gear pump according to the embodiment of the present application is explained, which provides the compact gear pump with advantages such as ease of use, a seal having a double-tip structure, and a compact layout.

[0037] It is worth mentioning that in the embodiments of the present application, the compact gear pump has a simple structure, does not involve complex manufacturing processes and expensive materials, and is highly economical. At the same time, for manufacturers, the compact gear pump provided in the present application is easy to produce and has low cost, which is more conducive to controlling production costs and further facilitating product promotion and use.

[0038] Those skilled in the art will appreciate that the embodiments of the present invention described above and shown in the accompanying drawings are provided for illustrative purposes only and are not intended to limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and illustrated in the embodiments. Any variations or modifications may be made to the embodiments of the present invention without departing from these principles.

Claims

1. A compact gear pump, characterized in that: The compact gear pump comprises: a plate assembly comprising a front plate, a gear plate, and a rear plate, wherein the front plate and the rear plate are disposed opposite each other, the gear plate is disposed between the front plate and the rear plate, and a mounting groove is formed on a side of the rear plate facing away from the gear plate; and A sealing member is arranged in the mounting groove, and the sealing member has a third cavity on a side close to the front plate, and the bottom wall forming the third cavity has a first protrusion, and the first protrusion also has a fourth cavity on a side close to the front plate, the sealing member has a groove on a side away from the front plate, and the bottom wall forming the groove has a second protrusion, and the second protrusion has an opening at an end facing away from the first protrusion, and the opening is connected to the fourth cavity. 2 . The compact gear pump according to claim 1 , wherein a wall surface forming the opening is a sloped surface.

3. A compact gear pump according to claim 1, wherein the third cavity has a first communicating cavity and a second communicating cavity, the first communicating cavity is connected to the second communicating cavity, and the second communicating cavity is also connected to the opening, the junction of the first communicating cavity and the second communicating cavity has a first annular tip, and the junction of the second communicating cavity and the opening has a second annular tip. 4 . The compact gear pump according to claim 3 , wherein a side of the front plate close to the gear plate is fixedly connected to a wall surface of the gear plate, and a side of the rear plate close to the gear plate is fixedly connected to the gear plate.

5. The compact gear pump according to claim 4, wherein the front plate has two first insertion holes arranged vertically, and the two first insertion holes also pass through the front plate. In addition, the gear plate has a first cavity and a second cavity, the first cavity and the second cavity are connected, and the first cavity and the second cavity are arranged vertically and together form an 8-shaped figure, one of the first insertion holes is connected to the first cavity, and the other first insertion hole is connected to the second cavity.

6. The compact gear pump according to claim 5, wherein the rear plate has a second insertion hole, the second insertion hole passes through the rear plate and faces the first insertion hole, and the second insertion hole is also connected to the first cavity, and the first cavity is located on the upper side of the second cavity.

7. A compact gear pump according to claim 6, wherein the rear plate further has a third insertion hole on one side close to the gear plate, the third insertion hole is located on the lower side of the second insertion hole and is spaced a predetermined distance from the second insertion hole, and the third insertion hole is also connected to the second cavity, and the third insertion hole is a blind hole.

8. The compact gear pump according to claim 7, wherein the compact gear pump further comprises a first gear shaft and a second gear shaft, one end of the first gear shaft being placed at the end of the first insertion hole facing the first cavity, and the other end passing through the second insertion hole and being placed outside, one end of the second gear shaft being placed at the end of the first insertion hole facing the second cavity, and the other end being matched with the third insertion hole, and the middle sections of the first gear shaft and the above-mentioned second gear shaft being meshed and connected.

9. The compact gear pump according to claim 8, wherein the compact gear pump further comprises a cover plate, the cover plate being fixed to the side of the rear plate facing away from the front plate, and the cover plate being configured to close the mounting groove, and the cover plate further comprising a connecting hole, the end portion of the first gear shaft also passing through the connecting hole.

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