CN210013822U - Sliding bearing for melt gear pump and melt gear pump comprising sliding bearing - Google Patents
Sliding bearing for melt gear pump and melt gear pump comprising sliding bearing Download PDFInfo
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- CN210013822U CN210013822U CN201920668879.5U CN201920668879U CN210013822U CN 210013822 U CN210013822 U CN 210013822U CN 201920668879 U CN201920668879 U CN 201920668879U CN 210013822 U CN210013822 U CN 210013822U
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Abstract
The utility model relates to a gear pump technical field especially relates to a slide bearing for melt gear pump reaches melt gear pump including it, slide bearing for melt gear pump is equipped with the off-load groove in the position department that the terminal surface that slide bearing is close to corresponding gear corresponds the material entry of corresponding melt gear pump, the tank bottom in off-load groove is for following the inclined plane structure that the axial extension of bearing body just deviates from the one end of bearing body terminal surface along radially outwards inclining, inclined plane structure makes with corresponding gear end face and pump case cooperation the off-load groove is the flaring structure that the opening deviates from the direction of feed. This flaring structure is the change that crescent from the direction that deviates from the material entry at the ascending degree of depth of slide bearing axial direction, consequently the material velocity of flow in the cavity progressively reduces from inside to outside, is favorable to the foreign matter in the material to be detained, and the foreign matter is detained effectually, more is applicable to the operating mode of entering the low pressure and high viscosity material.
Description
Technical Field
The utility model relates to a gear pump technical field especially relates to a slide bearing reaches fuse-element gear pump including it for fuse-element gear pump.
Background
The gear pump is a rotary pump which conveys liquid or supercharges the liquid by means of working volume change and movement formed between a pump cylinder and a meshed gear, and particularly, two gears, a pump body and front and rear covers form two closed spaces, and when the gears rotate, the volume of the space on the gear disengagement side is increased from small to large. Vacuum is formed to suck the liquid, and the volume of the space on the gear meshing side is reduced, so that the liquid is squeezed into the pipeline. The gear pump used for conveying media such as melt in chemical production is generally called as melt gear pump, in order to adapt to the high-temperature and high-pressure working environment of the melt gear pump and the working requirement of continuous operation, the bearing matched with the gear shaft is generally a sliding bearing, the lubrication between the sliding bearing and the gear shaft needs to be realized by forming a layer of liquid film by the melt material conveyed by the melt pump, the gap between the gear shaft and the sliding bearing is generally very small, and a spiral lubricating groove is generally arranged on the inner wall surface of the sliding bearing in sliding fit with the gear shaft, so that the medium enters the space between the shaft and the bearing from the lubricating groove to.
In order to prevent the gear pump from oil trapping and prevent solid foreign matters in the melt material from entering the working environment of the melt gear pump to increase the load of the melt gear pump, an unloading groove is usually arranged on the side surface of a sliding bearing, so that the oil trapping is eliminated by the unloading groove, and impurities can be retained by the unloading groove to play an unloading role.
For example, chinese patent publication No. CN106481550A discloses a sliding bearing for a long-life gear pump, which includes a housing, and a bearing a surface and a bearing B surface that are disposed in parallel in the housing, where one end of a joint between the bearing a surface and the bearing B surface is an inlet relief groove, and the other end of the joint between the bearing a surface and the bearing B surface is an outlet relief groove. As can be seen from fig. 1 and the description in the drawings of the specification, the inlet unloading groove and the outlet unloading groove are both of a structure in which the groove bottoms are planar, and although the structure can increase the width of the gear pump inlet to improve the oil intake efficiency, the depth change of the inlet unloading groove and the outlet unloading groove in the axial direction of the sliding bearing is too small, the material flow rate at the unloading groove is high, and the retention effect on foreign matters in the material is poor.
SUMMERY OF THE UTILITY MODEL
The utility model provides a slide bearing for fuse-element gear pump to solve among the prior art off-load groove and lead to detaining the poor problem of effect to the foreign matter in the material because of the degree of depth change undersize on slide bearing axial direction. Also provided is a melt gear pump comprising the sliding bearing for the melt gear pump.
The utility model discloses a slide bearing for fuse-element gear pump adopts following technical scheme:
the utility model provides a slide bearing for melt gear pump, slide bearing for melt gear pump includes the bearing body, the bearing body is close to and is equipped with the off-load groove on the position department that the terminal surface of corresponding gear corresponds the material entry of corresponding melt gear pump, be equipped with the fitting surface that is used for the complete set assembly to use on the bearing body lateral wall, the tank bottom in off-load groove is for following the inclined plane structure that the axial extension of bearing body just deviates from the one end of bearing body terminal surface along radially leaning out, inclined plane structure makes with corresponding gear end face and pump case cooperation the off-load groove is the flaring structure that the opening deviates from the direction of feed.
The inclined plane structure comprises at least two planes which are sequentially connected, and each plane is distributed around the axis of the corresponding bearing body.
The included angle between each plane and the end face is 10-40 degrees.
The included angle between the straight line connecting the plane close to the material inlet and the end face and the straight line vertical to the assembling face in the end face is 30-50 degrees, and the included angle between the straight line connecting the plane far away from the material inlet and the end face in the end face and the straight line vertical to the assembling face is 0-10 degrees.
Be equipped with the helical-shaped lubrication groove of double-end on melt gear pump sliding bearing and corresponding axle sliding fit's the internal face, the lubrication groove is close to the one end of terminal surface is for the opening structure that is used for the material to get into, deviates from the one end of terminal surface is seal structure.
And the back surface of each bearing monomer opposite to the end surface is provided with a backflow groove for guiding the leaked materials on the back surface of the bearing monomer back to the material inlet.
The utility model discloses a fuse-element gear pump adopts following technical scheme:
the utility model provides a fuse-element gear pump, is in including pump case, setting gear train and assembly in the pump case are in slide bearing for the epaxial fuse-element gear pump of gear train, slide bearing for the fuse-element gear pump includes the bearing body, the bearing body is close to and is equipped with the off-load groove on the position department that the terminal surface of corresponding gear corresponds the material entry of corresponding fuse-element gear pump, be equipped with the fitting surface that is used for the complete set assembly to use on the bearing body lateral wall, the tank bottom in off-load groove is for following the inclined plane structure that the axial extension of bearing body just deviates from the one end of bearing body terminal surface along radially leaning out, inclined plane structure and corresponding gear terminal surface and pump case cooperation make the off-load.
The inclined plane structure comprises at least two planes which are sequentially connected, and each plane is distributed around the axis of the corresponding bearing body.
The included angle between each plane and the end face is 10-40 degrees.
The included angle between the straight line connecting the plane close to the material inlet and the end face and the straight line vertical to the assembling face in the end face is 30-50 degrees, and the included angle between the straight line connecting the plane far away from the material inlet and the end face in the end face and the straight line vertical to the assembling face is 0-10 degrees.
Be equipped with the helical-shaped lubrication groove of double-end on melt gear pump sliding bearing and corresponding axle sliding fit's the internal face, the lubrication groove is close to the one end of terminal surface is for the opening structure that is used for the material to get into, deviates from the one end of terminal surface is seal structure.
And the back surface of each bearing monomer opposite to the end surface is provided with a backflow groove for guiding the leaked materials on the back surface of the bearing monomer back to the material inlet.
The utility model has the advantages that: the utility model discloses a tank bottom of entry off-load groove is the inclined plane structure in the slide bearing for melt gear pump, this inclined plane structure makes entry off-load groove be the opening and deviates from the flaring structure of feed direction with corresponding gear end face and pump case cooperation, this flaring structure is the change of crescent from the direction that deviates from the material entry at slide bearing axial direction ascending degree of depth, therefore the cavity that constitutes between entry off-load groove and corresponding gear end face and the pump case also outwards progressively enlarges from the material entrance, this cavity is because big-end-up, consequently the material velocity of flow in the cavity progressively reduces from inside to outside, the material flow state of entrance is improved, be favorable to the foreign matter in the material to be detained, the foreign matter is detained effectually, be more applicable to the operating mode of entry low pressure and high viscosity material.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a front view of a sliding bearing for a melt gear pump according to an embodiment of the present invention;
FIG. 2 is a left side view corresponding to FIG. 1;
FIG. 3 is a right side view corresponding to FIG. 1;
FIG. 4 is a rear view corresponding to FIG. 1;
FIG. 5 is a top view corresponding to FIG. 1;
FIG. 6 is a bottom view corresponding to FIG. 1;
FIG. 7 is a cross-sectional view A-A of FIG. 1;
fig. 8 is a front side perspective view of a particular embodiment of a sliding bearing for a melt gear pump according to the present invention;
fig. 9 is a rear side perspective view of a particular embodiment of a sliding bearing for a melt gear pump according to the present invention;
in the figure: 1. a body; 2. a boss; 21. a back side; 22. reflowing the trench; 3. an assembly surface; 31. a keyway; 4. an end face; 41. an outlet unloading slot; 42. a first plane; 421. chamfering; 422. a second plane; 5. a lubrication groove; 51. an open structure; 52. and (5) sealing structure.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The embodiment of the sliding bearing of the utility model, as shown in fig. 1 to fig. 9, a sliding bearing for a melt gear pump, comprising a bearing body, the bearing body comprises a body 1 and a boss 2 located at the back 21 of the body 1, the end face of the body 1 close to the corresponding gear is provided with an inlet unloading groove at the position corresponding to the material inlet of the corresponding melt gear pump, an outlet unloading groove 41 at the position corresponding to the material outlet, the side wall of the bearing body is provided with an assembly face 3 for the complete set assembly of the sliding bearings for two melt gear pumps, the assembly face 3 is provided with a key groove 31, the sliding bearings for two melt gear pumps used in the complete set assembly ensure the constancy of the mutual position through the keys arranged in the key groove 31, the groove bottom of the inlet unloading groove is an inclined plane structure which extends along the axial direction of the bearing body and is inclined outwards, the inclined plane structure is matched with the corresponding gear end face and the pump shell, so that the inlet unloading groove is in a flaring structure with an opening deviating from the feeding direction.
The inclined plane structure comprises three planes which are sequentially connected, each plane is distributed around the axis of the corresponding bearing body, the three planes are respectively a first plane 42, a chamfer surface 421 and a second plane 422, the first plane 42 and the second plane 422 are respectively connected with the chamfer surface 421, the chamfer surface 421 plays a connecting and transition role, and the connecting positions of the chamfer surface 421 and the first plane 42 and the second plane 422 are in smooth transition.
In the present embodiment, the first plane 42 and the second plane 422 are all at an angle of 20 ° with respect to the end surface 4.
In other embodiments, the ramp structure may include two or four and more planes; the included angle between the first plane and the end face and the included angle between the second plane and the end face can be 10-40 degrees.
In this embodiment, the line joining the first plane 42 and the end face 4, which is the plane close to the material inlet, makes an angle α of 40 ° with the line perpendicular to the mounting face 3 in the end face 4, and the line joining the second plane 422 and the end face 4, which is the plane far from the material inlet, makes an angle β of 5 ° with the line perpendicular to the mounting face 3 in the end face 4.
In other embodiments the line joining the plane close to the material inlet and the end face in the end face makes an angle of 30-50 ° with the line perpendicular to the mounting face 3, and the line joining the plane remote from the material inlet and the end face in the end face makes an angle of 0-10 ° with the line perpendicular to the mounting face 3.
This slide bearing for melt gear pump is equipped with spiral helicine lubrication groove 5 of double-end on the internal face of corresponding axle sliding fit, and the one end that lubrication groove 5 is close to terminal surface 4 is opening structure 51 for being used for the material to get into, the one end of keeping away from terminal surface 4 is seal structure 52 to guaranteeing that high viscosity material is under the condition that gets into the slide bearing inside more easily, as far as possible less the back 21 of leaking the bearing, cause the efficiency of melt gear pump to descend.
The back surface 21 opposite to the end surface 4 in the sliding bearing for the melt gear pump is provided with a backflow groove 22 for guiding the leaked materials on the back surface 21 back to a material inlet, so that the friction between the sliding bearing for the melt gear pump and the gear end surface 4 or the material leakage of the corresponding extending part of the driving shaft caused by overhigh back pressure is prevented.
The utility model discloses a tank bottom of entry off-load groove is the inclined plane structure in the slide bearing for melt gear pump, this inclined plane structure makes entry off-load groove be the opening and deviates from the flaring structure of feed direction with corresponding gear end face and pump case cooperation, this flaring structure is the change of crescent from the direction that deviates from the material entry at slide bearing axial direction ascending degree of depth, therefore the cavity that constitutes between entry off-load groove and corresponding gear end face and the pump case also outwards progressively enlarges from the material entrance, this cavity is because big-end-up, consequently the material velocity of flow in the cavity progressively reduces from inside to outside, the material flow state of entrance is improved, be favorable to the foreign matter in the material to be detained, the foreign matter is detained effectually, be more applicable to the operating mode of entry low pressure and high viscosity material.
A melt gear pump comprises a pump shell, a gear set arranged in the pump shell and a sliding bearing for the melt gear pump assembled on a gear shaft of the gear set, wherein the sliding bearing for the melt gear pump is the sliding bearing for the melt gear pump, so that the details are not repeated.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a slide bearing for melt gear pump, slide bearing for melt gear pump includes the bearing body, the bearing body is close to and is equipped with the off-load groove on the position department that the terminal surface of corresponding gear corresponds the material entry of corresponding melt gear pump, be equipped with the assembly surface that is used for the complete set assembly to use on the bearing body lateral wall, its characterized in that: the tank bottom of off-load groove is for following the axial extension of bearing body just deviates from the inclined plane structure of the one end of bearing body terminal surface along radially outwards inclining, inclined plane structure makes with corresponding gear end face and pump case cooperation the off-load groove is the flaring structure that the opening deviates from the direction of feed.
2. A sliding bearing for a melt gear pump according to claim 1, characterized in that: the inclined plane structure comprises at least two planes which are sequentially connected, and each plane is distributed around the axis of the corresponding bearing body.
3. A sliding bearing for a melt gear pump according to claim 2, characterized in that: the included angle between each plane and the end face is 10-40 degrees.
4. A sliding bearing for a melt gear pump according to claim 3, characterized in that: the included angle between the straight line connecting the plane close to the material inlet and the end face and the straight line vertical to the assembling face in the end face is 30-50 degrees, and the included angle between the straight line connecting the plane far away from the material inlet and the end face in the end face and the straight line vertical to the assembling face is 0-10 degrees.
5. A sliding bearing for a melt gear pump according to claim 1, characterized in that: be equipped with the helical-shaped lubrication groove of double-end on melt gear pump sliding bearing and corresponding axle sliding fit's the internal face, the lubrication groove is close to the one end of terminal surface is for the opening structure that is used for the material to get into, deviates from the one end of terminal surface is seal structure.
6. A sliding bearing for a melt gear pump according to claim 1, characterized in that: and the back surface of each bearing monomer opposite to the end surface is provided with a backflow groove for guiding the leaked materials on the back surface of the bearing monomer back to the material inlet.
7. The utility model provides a fuse-element gear pump, is in including pump case, setting gear train and assembly in the pump case are in slide bearing for the epaxial fuse-element gear pump of gear train, slide bearing for the fuse-element gear pump includes the bearing body, the bearing body is close to and is equipped with the off-load groove on the position department that the terminal surface of corresponding gear corresponds the material entry of corresponding fuse-element gear pump, be equipped with the assembly surface that is used for the complete set assembly to use on the bearing body lateral wall, its characterized in that: the tank bottom of off-load groove is for following the axial extension of bearing body just deviates from the inclined plane structure of the one end of bearing body terminal surface along radially outwards inclining, inclined plane structure makes with corresponding gear end face and pump case cooperation the off-load groove is the flaring structure that the opening deviates from the direction of feed.
8. A melt gear pump as set forth in claim 7 wherein: the inclined plane structure comprises at least two planes which are sequentially connected, and each plane is distributed around the axis of the corresponding bearing body.
9. A melt gear pump as set forth in claim 8 wherein: the included angle between each plane and the end face is 10-40 degrees.
10. A melt gear pump as set forth in claim 9 wherein: the included angle between the straight line connecting the plane close to the material inlet and the end face and the straight line vertical to the assembling face in the end face is 30-50 degrees, and the included angle between the straight line connecting the plane far away from the material inlet and the end face in the end face and the straight line vertical to the assembling face is 0-10 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920668879.5U CN210013822U (en) | 2019-05-10 | 2019-05-10 | Sliding bearing for melt gear pump and melt gear pump comprising sliding bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920668879.5U CN210013822U (en) | 2019-05-10 | 2019-05-10 | Sliding bearing for melt gear pump and melt gear pump comprising sliding bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210013822U true CN210013822U (en) | 2020-02-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920668879.5U Active CN210013822U (en) | 2019-05-10 | 2019-05-10 | Sliding bearing for melt gear pump and melt gear pump comprising sliding bearing |
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| CN (1) | CN210013822U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115163484A (en) * | 2022-07-26 | 2022-10-11 | 宁波玛格化纤设备有限公司 | Corrosion-resistant, wear-resistant and anti-engagement gear pump sliding bearing |
-
2019
- 2019-05-10 CN CN201920668879.5U patent/CN210013822U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115163484A (en) * | 2022-07-26 | 2022-10-11 | 宁波玛格化纤设备有限公司 | Corrosion-resistant, wear-resistant and anti-engagement gear pump sliding bearing |
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