CN220378470U - Gear pump with floating sealing structure - Google Patents
Gear pump with floating sealing structure Download PDFInfo
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- CN220378470U CN220378470U CN202322116092.7U CN202322116092U CN220378470U CN 220378470 U CN220378470 U CN 220378470U CN 202322116092 U CN202322116092 U CN 202322116092U CN 220378470 U CN220378470 U CN 220378470U
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- gear
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- pump cylinder
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- 238000007789 sealing Methods 0.000 title claims abstract description 49
- 230000002093 peripheral effect Effects 0.000 claims abstract description 7
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 239000007788 liquid Substances 0.000 abstract description 9
- 239000004576 sand Substances 0.000 description 4
- 238000002955 isolation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model provides a gear pump with a floating sealing structure, which comprises a pump cylinder body, a pump driving gear, a pump driven gear and a floating sealing structure, wherein a pump cavity is formed between an upper cover and the pump cylinder body, and an output port and an output hole are respectively arranged on two sides of the pump cavity. The pump cylinder body rotates and is provided with a pump driving gear and a pump driven gear in an intermeshing manner. The floating seal structure is arranged between one axial end of the pump driving gear and the pump driven gear and the inner wall extending radially in the pump cylinder body, the driving shaft and the driven shaft penetrate through the floating seal structure, and the peripheral sides of the floating seal structure are in contact with the inner wall extending axially in the pump cylinder body. According to the gear pump with the floating sealing structure, when the gear pump works, negative pressure is generated in the pump cavity by arranging the floating sealing structure, so that the floating sealing structure moves towards the direction close to the driving gear of the pump, a space between the gear disengaging side and the gear meshing side forms good sealing, the suction stroke is longer, and the power for outputting liquid is stronger.
Description
Technical Field
The utility model relates to the field of gear pumps, in particular to a gear pump with a floating sealing structure.
Background
Gear pumps are rotary pumps that rely on the change and movement of working volume created between a pump cylinder and an intermeshing gear to deliver or pressurize a liquid. When the gears rotate, the volume of the space at the disengaging side of the gears is changed from small to large, vacuum is formed, liquid is sucked in, the volume of the space at the engaging side of the gears is changed from large to small, and the liquid is extruded into the pipeline. In the gear pump in the prior art, due to poor tightness of a space between a gear disengaging side and a gear meshing side, the suction stroke is short, the power for conveying liquid is poor, and the use scene of the gear pump is limited.
It is desirable to provide a gear pump with a floating seal arrangement to address the above-described problems.
Disclosure of Invention
The utility model provides a gear pump with a floating sealing structure, which solves the problems of short suction range and poor power for conveying liquid caused by poor sealing performance of a space between a gear disengaging side and a gear engaging side of the gear pump in the prior art.
In order to solve the technical problems, the technical scheme of the utility model is as follows: a gear pump having a floating seal arrangement, comprising:
one end of the pump cylinder body is detachably connected with an upper cover, a pump cavity is formed by enclosing the upper cover and the pump cylinder body, and an output port and an output hole are respectively arranged on two sides of the pump cavity;
the pump driving gear is rotationally connected in the pump cylinder body through the driving shaft;
the pump driven gear is rotationally connected in the pump cylinder body through a driven shaft, and the pump driven gear is in meshed connection with the pump driving gear; and
the floating sealing structure is arranged between one axial end of the pump driving gear and the inner wall extending radially in the pump cylinder body, the driving shaft and the driven shaft penetrate through the floating sealing structure, and the peripheral sides of the floating sealing structure are in contact with the inner wall extending axially in the pump cylinder body.
In the utility model, the floating sealing structure comprises a floating plate and a wear-resisting plate, wherein the floating plate is made of rubber, the side edge of the floating plate is clamped between the pump cylinder body and the upper cover, and the wear-resisting plate is positioned between the floating plate and the pump driving gear and between the wear-resisting plate and the pump driven gear.
The wear-resistant plate comprises a wear-resistant plate, a floating plate and a deformation groove, wherein the surface, far away from the wear-resistant plate, of the floating plate is provided with a raised line, the surface, close to the wear-resistant plate, of the floating plate is provided with a raised line, the raised line is in contact with the wear-resistant plate, and the raised line is opposite to the deformation groove.
In addition, the output port is arranged on the inner wall extending axially in the pump cylinder body, the input port is arranged on the inner wall extending radially in the pump cylinder body, and the floating sealing structure is provided with a through hole opposite to the input port.
Further, an input pipe is arranged on the upper cover, the input pipe protrudes out of one surface of the upper cover, which is close to the pump cavity, a bump is arranged on the periphery of the input port, and an adapting groove corresponding to the input pipe and the bump is arranged on the floating plate.
In the utility model, a sealing ring is arranged between the pump cylinder body and the upper cover.
Further, the pump cylinder body is close to the peripheral position of upper cover is provided with the fixed slot, the upper cover be provided with be used for with the fixed slot location grafting the flange, the inboard of flange is provided with be used for setting up the notch of sealing washer.
In the utility model, one end of the pump cylinder body, which is far away from the upper cover, is connected with a reduction gearbox, a motor is connected outside the reduction gearbox, a reduction driving gear and a reduction driven gear which are connected with each other in a meshed mode are rotationally arranged in the reduction gearbox, an output shaft of the motor is connected with the reduction driving gear, the driving shaft extends in the reduction gearbox, and the reduction driven gear is connected with the driving shaft.
Further, the gear pump with the floating sealing structure further comprises a sealing valve and a valve support, the driving shaft penetrates through the sealing valve and the valve support, the valve support is fixedly connected with the pump cylinder body, and the sealing valve is arranged between the valve support and the pump cylinder body.
Further, be provided with the boss on the pump cylinder body, be provided with the constant head tank in the boss, the sealing valve sets up in the constant head tank, be provided with the extension board on the pump cylinder body, the week side of boss is provided with spacing chimb, the valve support with the extension board buckle is connected, be provided with the slot on the valve support, the slot with spacing chimb location grafting, the valve support will the sealing valve is pressed and is fixed in the constant head tank.
Compared with the prior art, the utility model has the beneficial effects that: according to the gear pump with the floating sealing structure, when the gear pump works, negative pressure is generated in the pump cavity by arranging the floating sealing structure, so that the floating sealing structure moves towards the direction close to the driving gear of the pump, and a space between the gear disengaging side and the gear meshing side forms good sealing, so that the suction stroke of the gear part is longer, and the power for outputting liquid is stronger.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the embodiments are briefly described below, and the drawings in the following description are only drawings corresponding to some embodiments of the present utility model.
Fig. 1 is a schematic structural view of a preferred embodiment of a gear pump with a floating seal arrangement of the present utility model.
Fig. 2 is a partially disassembled schematic illustration of a gear pump with a floating seal arrangement according to the present utility model.
Fig. 3 is a schematic view of a partial cross-sectional structure of a gear pump having a floating seal structure according to the present utility model.
Fig. 4 is a schematic view of the structure of the reduction gearbox with the floating seal structure.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The terms of directions used in the present utility model, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "side", "top" and "bottom", are used for explaining and understanding the present utility model only with reference to the orientation of the drawings, and are not intended to limit the present utility model.
The words "first," "second," and the like in the terminology of the present utility model are used for descriptive purposes only and are not to be construed as indicating or implying relative importance and not as limiting the order of precedence.
In the present utility model, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the gear pump in the prior art, due to poor tightness of a space between a gear disengaging side and a gear meshing side, the suction stroke is short, the power for conveying liquid is poor, and the use scene of the gear pump is limited.
The following is a preferred embodiment of a gear pump with a floating seal structure that solves the above technical problems.
Referring to fig. 1 and 2, fig. 1 is a schematic structural diagram of a gear pump with a floating seal structure according to a preferred embodiment of the present utility model. Fig. 2 is a partially disassembled schematic illustration of a gear pump with a floating seal arrangement according to the present utility model.
In the drawings, like structural elements are denoted by like reference numerals.
The utility model provides a gear pump with a floating sealing structure, which comprises a pump cylinder body 11, a pump driving gear 17, a pump driven gear 18 and the floating sealing structure.
Wherein, the one end detachable of pump cylinder 11 is connected with upper cover 12, encloses between upper cover 12 and the pump cylinder 11 and closes and form the pump chamber, and the both sides of pump chamber are provided with delivery outlet and output hole respectively.
The pump driving gear 17 is rotatably coupled to the pump cylinder 11 via a driving shaft 171.
The pump driven gear 18 is rotatably connected in the pump cylinder 11 through the driven shaft 181, and the pump driven gear 18 is engaged with the pump driving gear 17.
The floating seal structure is arranged between the axial end of the pump driving gear 17 and the pump driven gear 18 and the inner wall extending radially inside the pump cylinder body 11, namely, the floating seal structure covers the area of the axial end of the driving gear 17 and the axial end of the pump driven gear 18, the driving shaft 171 and the driven shaft 181 penetrate through the floating seal structure and are rotationally connected with the upper cover 12, and the peripheral sides of the floating seal structure are contacted with the inner wall extending axially inside the pump cylinder body 11 so as to form comprehensive isolation for the gear disengaging side and the gear meshing side jig.
Specifically, the floating sealing structure comprises a floating plate 15 and a wear-resisting plate 16, the floating plate 15 is made of rubber, the wear-resisting plate 16 can float up and down, the rotation of a pump driving gear 17 and a pump driven gear 18 is not influenced in a transitional manner, two spaces of a gear disengaging side and a gear meshing side can be isolated in a self-adaptive manner, the side edge of the floating plate 15 is clamped between a pump cylinder body 11 and an upper cover 12, and the wear-resisting plate 16 is positioned between the floating plate 15 and the pump driving gear 17 and between the wear-resisting plate 16 and the pump driven gear 18. The wear plate 16 may be a wear resistant metal material with a long service life.
Wherein, the one side that the antifriction plate 16 was kept away from to the floating plate 15 is provided with deformation groove 153, and the one side that the antifriction plate 16 was close to the floating plate 15 is provided with sand grip 154, sand grip 154 and antifriction plate 16 contact, sand grip 154 is relative with the position of deformation groove 153, and sand grip 154 can form the extrusion to antifriction plate 16, and deformation groove 153 is favorable to the floating plate 15 to warp and makes antifriction plate 16 float from top to bottom.
Referring to fig. 2 and 3, in the present embodiment, the output port is disposed on an inner wall extending axially inside the pump cylinder 11, the output port is externally connected with an output pipe 111, the input port is disposed on an inner wall extending radially inside the pump cylinder 11, the input port is externally connected with an input pipe 121, the extension directions of the output pipe 111 and the input pipe 121 are consistent, the connection and installation operations are facilitated, and a through hole 152 opposite to the input port is disposed on the floating seal structure.
Wherein, the input pipe 121 protrudes out of one side of the upper cover 12 close to the pump cavity, the periphery of the input port is provided with a bump 122, and the floating plate 15 is provided with an adapting groove 151 corresponding to the input pipe 121 and the bump 122, so that the floating plate 15 is more stable.
In the present embodiment, a seal ring 1A is provided between the pump cylinder 11 and the upper cover 12 to form a pump chamber with better sealability.
Referring to fig. 3, further, a fixing groove 112 is provided at a peripheral position of the pump cylinder 11 near the upper cover 12, the upper cover 12 is provided with a protruding plate 123 for positioning and plugging with the fixing groove 112, and a groove for setting the sealing ring 1A is provided at an inner side of the protruding plate 123 through cooperation of the protruding plate 123 and the fixing groove 112, so that the pump cylinder 11 and the upper cover 12 are connected more stably, and the sealing performance is better and more stable.
Referring to fig. 1 and 4, in the present embodiment, one end of a pump cylinder 11 away from an upper cover 12 is connected with a reduction gearbox 14, a motor 13 is connected to the outside of the reduction gearbox 14, a reduction driving gear 1C and a reduction driven gear 1D which are engaged with each other are rotatably disposed in the reduction gearbox 14, an output shaft of the motor 13 is connected with the reduction driving gear 1C, a driving shaft 171 extends in the reduction gearbox 14, and the reduction driven gear 1D is connected to the driving shaft 171.
The gear pump with a floating seal structure of this embodiment further includes a seal valve 1B and a valve support 19, the driving shaft 171 penetrates the seal valve 1B and the valve support 19, the valve support 19 is fixedly connected with the pump cylinder 11, and the seal valve 1B is disposed between the valve support 19 and the pump cylinder 11, so that the pump cavity and the space inside the reduction gearbox form a sealed isolation.
Referring to fig. 2 and fig. 4, specifically, a boss 113 is disposed on the pump cylinder 11, a positioning groove is disposed in the boss 113, a sealing valve 1B is disposed in the positioning groove, an extension plate 114 is disposed on the pump cylinder 11, a limit flange (the position indicated by the reference numeral 113 in fig. 4 is also a limit flange) is disposed on the periphery of the boss 113, a valve support 19 is in snap connection with the extension plate 114, such as a clamping block 192 is disposed on the valve support 19, a corresponding clamping groove is disposed on the extension plate 114, a slot 191 is disposed on the valve support 19, the slot 191 is in positioning insertion with the limit flange, and the valve support 19 presses and fixes the sealing valve 1B in the positioning groove, so that the sealing valve 1B is very stable and convenient to assemble and disassemble.
When the gear pump with the floating sealing structure is used, as the floating sealing structure is provided with the elastic deformable floating plate, negative pressure is generated in the pump cavity when the driving gear and the pump driven gear are meshed for transmission, so that the floating sealing structure moves towards the direction close to the driving gear of the pump, a better seal can be formed in a self-adaptive mode on the space between the gear disengaging side and the gear meshing side, meanwhile, the wear-resisting plate can float up and down, the rotation of the driving gear of the pump and the driven gear of the pump is not influenced in a transitional mode, the suction range of the gear part is longer, and the power for outputting liquid is stronger.
In summary, although the present utility model has been described in terms of the preferred embodiments, the preferred embodiments are not limited to the above embodiments, and various modifications and changes can be made by one skilled in the art without departing from the spirit and scope of the utility model, and the scope of the utility model is defined by the appended claims.
Claims (10)
1. A gear pump having a floating seal arrangement, comprising:
one end of the pump cylinder body is detachably connected with an upper cover, a pump cavity is formed by enclosing the upper cover and the pump cylinder body, and an output port and an output hole are respectively arranged on two sides of the pump cavity;
the pump driving gear is rotationally connected in the pump cylinder body through the driving shaft;
the pump driven gear is rotationally connected in the pump cylinder body through a driven shaft, and the pump driven gear is in meshed connection with the pump driving gear; and
the floating sealing structure is arranged between one axial end of the pump driving gear and the inner wall extending radially in the pump cylinder body, the driving shaft and the driven shaft penetrate through the floating sealing structure, and the peripheral sides of the floating sealing structure are in contact with the inner wall extending axially in the pump cylinder body.
2. The gear pump with floating seal structure according to claim 1, wherein the floating seal structure comprises a floating plate and a wear plate, the floating plate is made of rubber, the side edge of the floating plate is clamped between the pump cylinder body and the upper cover, and the wear plate is positioned between the floating plate and the pump driving gear and the pump driven gear.
3. The gear pump with a floating seal structure according to claim 2, wherein a deformation groove is provided on a surface of the floating plate away from the wear plate, a convex strip is provided on a surface of the floating plate close to the wear plate, the convex strip contacts with the wear plate, and the convex strip is opposite to the deformation groove.
4. The gear pump with a floating seal structure according to claim 2, wherein the output port is provided on an inner wall extending axially inside the pump cylinder, the input port is provided on an inner wall extending radially inside the pump cylinder, and the floating seal structure is provided with a through hole opposite to the input port.
5. The gear pump with the floating seal structure according to claim 4, wherein an input pipe is arranged on the upper cover, the input pipe protrudes out of one surface of the upper cover, which is close to the pump cavity, a protruding block is arranged on the periphery of the input port, and an adapting groove corresponding to the input pipe and the protruding block is arranged on the floating plate.
6. The gear pump with floating seal structure according to claim 1, wherein a seal ring is provided between the pump cylinder and the upper cover.
7. The gear pump with the floating seal structure according to claim 6, wherein a fixing groove is formed in the peripheral position, close to the upper cover, of the pump cylinder body, a convex plate for positioning and inserting with the fixing groove is arranged on the upper cover, and a notch groove for arranging the sealing ring is formed in the inner side of the convex plate.
8. The gear pump with the floating seal structure according to claim 1, wherein one end of the pump cylinder body, which is far away from the upper cover, is connected with a reduction gearbox, a motor is connected outside the reduction gearbox, a reduction driving gear and a reduction driven gear which are connected with each other in a meshed mode are rotationally arranged in the reduction gearbox, an output shaft of the motor is connected with the reduction driving gear, the driving shaft extends in the reduction gearbox, and the reduction driven gear is connected with the driving shaft.
9. The gear pump with floating seal arrangement according to claim 8, further comprising a sealing valve and a valve bracket, wherein the drive shaft extends through the sealing valve and the valve bracket, wherein the valve bracket is fixedly connected to the pump cylinder, and wherein the sealing valve is disposed between the valve bracket and the pump cylinder.
10. The gear pump with the floating sealing structure according to claim 9, wherein a boss is arranged on the pump cylinder body, a positioning groove is arranged in the boss, the sealing valve is arranged in the positioning groove, an extension plate is arranged on the pump cylinder body, a limit convex edge is arranged on the periphery of the boss, the valve support is in buckling connection with the extension plate, a slot is arranged on the valve support, the slot is in positioning insertion connection with the limit convex edge, and the valve support presses and fixes the sealing valve in the positioning groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322116092.7U CN220378470U (en) | 2023-08-07 | 2023-08-07 | Gear pump with floating sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322116092.7U CN220378470U (en) | 2023-08-07 | 2023-08-07 | Gear pump with floating sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220378470U true CN220378470U (en) | 2024-01-23 |
Family
ID=89571854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322116092.7U Active CN220378470U (en) | 2023-08-07 | 2023-08-07 | Gear pump with floating sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220378470U (en) |
-
2023
- 2023-08-07 CN CN202322116092.7U patent/CN220378470U/en active Active
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