CN115773239B - Four-quadrant internal gear pump - Google Patents
Four-quadrant internal gear pump Download PDFInfo
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- CN115773239B CN115773239B CN202211466823.4A CN202211466823A CN115773239B CN 115773239 B CN115773239 B CN 115773239B CN 202211466823 A CN202211466823 A CN 202211466823A CN 115773239 B CN115773239 B CN 115773239B
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- 238000003466 welding Methods 0.000 claims description 14
- 238000003780 insertion Methods 0.000 claims description 13
- 230000037431 insertion Effects 0.000 claims description 13
- 238000009434 installation Methods 0.000 claims description 10
- 230000007246 mechanism Effects 0.000 claims description 8
- 238000007789 sealing Methods 0.000 abstract description 8
- 230000009471 action Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The invention relates to the technical field of gear pumps, in particular to a four-quadrant internal gear pump, which comprises a pump body, wherein a port sleeve is fixedly arranged at the front end of the pump body, matched jacks are respectively arranged at the upper end and two sides of the port sleeve, hinge posts are symmetrically and fixedly arranged on the pump body at two sides of the port sleeve, limit screws are connected to the hinge posts in a threaded manner, mounting blocks are symmetrically welded at the upper side of the front end of the pump body, plug holes are formed in the mounting blocks, a mounting plate is welded at the middle position of the upper end of the pump body, a moving hole is formed in the upper end of a pump cover, a movable locking plate is arranged in the moving hole, the pump cover is fixed through the matching of an arc groove on the movable locking plate and an arc plug block on the pump body, and when the pump cover is mounted, the sealing plug sleeve is only required to be plugged in the port sleeve, so that the pump cover is very convenient and quick.
Description
Technical Field
The invention relates to the technical field of gear pumps, in particular to a four-quadrant internal gear pump.
Background
The four-quadrant internal gear pump has the advantages that the working performance is superior, the noise is low, the pulsation is low, the four-quadrant internal gear pump is suitable for variable speed operation, the four-quadrant internal gear pump is in four working states, the application range is wide, split type design is adopted between the end cover of the four-quadrant internal gear pump and the gear pump, the gear pump is convenient to open, internal overhaul and maintenance of the gear pump are facilitated, the end covers on all the existing four-quadrant internal gear pumps are fastened and installed through screws, larger torque is required to be applied to the screws in the installation process, so that the fit between the end cover and the gear pump can be ensured, the tightness is ensured, the normal use of the gear pump is ensured, the time and the labor are consumed in torque fastening of the screws, the assembly efficiency of the four-quadrant internal gear pump is seriously influenced, in addition, vibration is generated under the action of internal pressure of the gear pump in the process of long-term use, the loosening phenomenon of the screws is possibly caused, and the leakage phenomenon of the gear pump is caused, and the gear pump cannot be normally used.
Disclosure of Invention
The invention aims to provide a four-quadrant internal gear pump so as to solve the problems in the prior art.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the utility model provides a four-quadrant crescent gear pump, includes the pump body, the fixed port cover that is provided with in front end of the pump body, the cooperation jack has been seted up respectively to the upper end and the both sides of port cover, and the fixed articulated column that is provided with on the pump body of port cover both sides, threaded connection has stop screw on the articulated column, the front end upside symmetry welding of the pump body has the installation piece, the spliced eye has been seted up on the installation piece, the welding has the mounting panel on the upper end intermediate position of the pump body, the movable hole has been seted up on the mounting panel, the front end of the pump body is covered with the pump cover, the fixed orifices that is provided with in one side of pump cover, sealed plug bush is pegged graft in the port cover, and supplementary fixed orifices has been seted up respectively to the upper end and the both sides of sealed plug bush, supplementary fixed orifices and cooperation jack align, the movable hole has been seted up to the upper end of pump cover, the screw hole has been seted up to the upper end of movable hole, the pump cover installs on the pump body through swift safety mechanism.
Preferably, the quick assembly and disassembly mechanism comprises a movable lock plate, an arc insertion block, a first insertion column, a rotary push plate and a second insertion column, wherein the movable lock plate is inserted in the moving hole, the width of the movable lock plate is equal to that of the moving hole, the upper end of the movable lock plate is provided with a mounting hole, a bearing is mounted in the mounting hole, the bearing is matched with a threaded guide rod, and the threaded guide rod is in threaded connection with the threaded hole.
Preferably, one end of the movable lock plate is fixedly provided with a conical surface T-shaped plate, a central groove is formed in the middle position of the conical surface T-shaped plate, arc grooves are symmetrically formed in two sides of the conical surface T-shaped plate, and arc inserting blocks are inserted into the arc grooves.
Preferably, the plane end welding of circular arc inserted block has first inserted bar, first inserted bar is pegged graft in the spliced eye on the installation piece, and has cup jointed first spring on the first inserted bar, and its tip welding has first end plate, has welded the connecting plate on the first inserted bar in addition, the one end welding that keeps away from first inserted bar on the connecting plate has the jack post, fixedly on the jack post be provided with spacing post.
Preferably, the second spring is sleeved on the limiting column, a second end plate is welded at the end part of the limiting column, and an inclined-surface pressing block is fixedly arranged at the lower side of one end, far away from the first inserted link, of the connecting plate.
Preferably, the first inserted link is inserted and connected with a second inserted link, a fourth spring is sleeved on the second inserted link, a long supporting plate is welded on the second inserted link at the upper side of the fourth spring, pressed links are symmetrically welded at the upper sides of two ends of the long supporting plate, the upper end face of the pressed link is an arc face, and the pressed links are contacted with the inclined-plane pressing block, the second inserted link is inserted and connected in the movable hole, a third spring is sleeved on the second inserted link, the third spring is positioned at the upper side of the mounting plate, a third end plate is welded at the upper end of the second inserted link, and the second inserted link is positioned in the central groove.
Preferably, the rotation push plate is two, and has seted up the hinge hole on the side central point of rotation push plate, articulated in the hinge hole have the hinge post, and carry out spacingly through stop screw, the limit groove has been seted up to the upper end of rotation push plate, peg graft in the limit groove has the limit post, and the fixed link that is provided with of lower extreme of rotation push plate, first logical groove has been seted up on the link, the second logical groove has been seted up to the bilateral symmetry in first logical groove, and peg graft in the first logical groove has the third inserted bar.
Preferably, the third inserted link is inserted in the second inserted link, the second inserted link is inserted in the mating insertion holes on two sides of the port sleeve, and the third inserted link is sleeved with a fifth spring, one end of the third inserted link, which is far away from the second inserted link, is symmetrically and fixedly provided with a connecting inserted link, and the connecting inserted link is inserted in the second through slot.
Compared with the prior art, the invention has the beneficial effects that: the invention has reasonable structure and strong functionality and has the following advantages:
1. the upper end of the pump cover is provided with a moving hole, a movable lock plate is arranged in the moving hole, the pump cover is fixed through the cooperation of the arc groove on the movable lock plate and the arc insert block on the pump body, and when the pump cover is installed, the sealing insert sleeve is only required to be inserted into the port sleeve, so that the pump cover is very convenient and quick.
2. When carrying out the grafting of sealed plug bush, can press down first spliced pole under the effect of briquetting under the inclined plane, and then make first spliced pole down move, in the auxiliary fixed orifices of spliced upper end, in addition along with the removal of circular arc inserted block will drive the rotation push pedal and rotate, and then make the second spliced pole insert in the auxiliary fixed orifices of both sides under the effect of rotation push pedal, play auxiliary fixed effect to the pump cover, guaranteed the fastness of pump cover installation, easy operation is convenient and swift, the packaging efficiency and the maintenance efficiency of the pump body have been promoted greatly.
3. When the pump cover is disassembled, the threaded guide rod is only required to be rotated to drive the movable lock plate to move upwards, so that the arc insert block is separated from the arc groove, and then the arc insert block can be driven to reset under the action of the first spring, and then the first insert column and the second insert column are driven to reset, so that the two insert columns respectively exit the auxiliary fixing holes, and the pump cover can be taken down.
Drawings
Fig. 1 is a schematic view of a gear pump assembly from a first perspective.
Fig. 2 is a schematic view of a second perspective of the gear pump assembly.
Fig. 3 is an enlarged schematic view at a in fig. 1.
Fig. 4 is an exploded view of a gear pump assembly.
Fig. 5 is an enlarged schematic view at B in fig. 4.
Fig. 6 is an enlarged schematic view at C in fig. 4.
In the figure: 1. a pump body; 11. a port sleeve; 12. matching with the jack; 13. a hinge post; 14. a limit screw; 15. a mounting block; 16. a mounting plate; 2. a pump cover; 21. sealing the plug bush; 22. auxiliary fixing holes; 23. a moving hole; 24. a threaded hole; 3. a movable lock plate; 31. a mounting hole; 32. a bearing; 33. a threaded guide rod; 34. conical surface T-shaped plate; 35. a central slot; 36. arc grooves; 4. arc insertion blocks; 41. a first plunger; 42. a first spring; 43. a first end plate; 44. a connecting plate; 45. a top column; 46. a limit column; 47. a second spring; 48. a second end plate; 49. pressing blocks under the inclined planes; 5. a first post; 51. a second plunger; 52. a long support plate; 53. a pressed column; 54. a third spring; 55. a third end plate; 56. a fourth spring; 6. rotating the push plate; 61. a limit groove; 62. a connecting frame; 63. a first through groove; 64. a second through slot; 7. a second post; 71. a third plunger; 72. connecting the inserted columns; 73. and a fifth spring.
Detailed Description
The following description of the embodiments of the present invention 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 invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 6, the present invention provides a technical solution:
the four-quadrant internal gear pump comprises a pump body 1, a port sleeve 11 is fixedly arranged at the front end of the pump body 1, matching insertion holes 12 are respectively formed at the upper end and two sides of the port sleeve 11, hinge columns 13 are symmetrically and fixedly arranged on the pump body 1 at two sides of the port sleeve 11, limit screws 14 are connected to the hinge columns 13 in a threaded manner, mounting blocks 15 are symmetrically welded at the upper side of the front end of the pump body 1, inserting holes are formed in the mounting blocks 15, a mounting plate 16 is welded at the middle position of the upper end of the pump body 1, movable holes are formed in the mounting plate 16, a pump cover 2 is covered at the front end of the pump body 1, a sealing plug bush 21 is fixedly arranged at one side of the pump cover 2 and inserted into the port sleeve 11, interference fit is formed between the sealing plug bush 21 and the port sleeve 11, auxiliary fixing holes 22 are respectively formed at the upper end and two sides of the sealing plug bush 21, the auxiliary fixing hole 22 is aligned with the matching jack 12, the upper end of the pump cover 2 is provided with a moving hole 23, the upper end of the moving hole 23 is provided with a threaded hole 24, the pump cover 2 is installed on the pump body 1 through a quick installation and removal mechanism, the quick installation and removal mechanism comprises a movable lock plate 3, an arc insertion block 4, a first insertion column 5, a rotary push plate 6 and a second insertion column 7, the movable lock plate 3 is inserted in the moving hole 23, the width of the movable lock plate 3 is equal to that of the moving hole 23, the upper end of the movable lock plate 3 is provided with a mounting hole 31, a bearing 32 is installed in the mounting hole 31, the bearing 32 is matched with a threaded guide rod 33, the threaded guide rod 33 is in threaded connection with the threaded hole 24, and when the pump cover 2 is fixed on the pump body 1, the lower end face of the movable lock plate 3 is in contact with the inner lower end face of the moving hole 23.
One end of the movable lock plate 3 is fixedly provided with a conical surface T-shaped plate 34, a central groove 35 is formed in the middle position of the conical surface T-shaped plate 34, circular arc grooves 36 are symmetrically formed in two sides of the conical surface T-shaped plate 34, circular arc inserting blocks 4 are inserted into the circular arc grooves 36, and the size of the circular arc grooves 36 is matched with that of the circular arc inserting blocks 4.
The plane end welding of circular arc inserted block 4 has first inserted bar 41, first inserted bar 41 peg graft in the spliced eye on installation piece 15, and first spring 42 has been cup jointed on the first inserted bar 41, its tip welding has first end plate 43, the both ends of first spring 42 weld respectively on installation piece 15 and first end plate 43, in addition, the welding has connecting plate 44 on the first inserted bar 41, the one end that keeps away from first inserted bar 41 on the connecting plate 44 has welded jack post 45, fixedly on the jack post 45 be provided with spacing post 46, the diameter of spacing post 46 is less than the diameter of jack post 45, and cup joint second spring 47 on the spacing post 46, and the tip welding of spacing post 46 has second end plate 48, the one end welding of second spring 47 is on second end plate 48, the one end downside that keeps away from first inserted bar 41 on the connecting plate 44 is fixedly provided with inclined plane lower briquetting 49, the surface of inclined plane lower briquetting 49 is smooth burr-free.
The first inserting column 5 is inserted with the second inserting rod 51, the second inserting rod 51 is sleeved with the fourth spring 56, the second inserting rod 51 on the upper side of the fourth spring 56 is welded with the long supporting plate 52, two ends of the fourth spring 56 are respectively welded on the long supporting plate 52 and the first inserting column 5, the first inserting column 5 is provided with a first inserting hole, the second inserting rod 51 is inserted into the first inserting hole, two upper sides of the two ends of the long supporting plate 52 are symmetrically welded with the pressed column 53, the upper end face of the pressed column 53 is an arc face, the pressed column 53 is in contact with the inclined face lower pressing block 49, the second inserting rod 51 is inserted into the movable hole, the second inserting rod 51 is sleeved with the third spring 54, the third spring 54 is positioned on the upper side of the mounting plate 16, the upper end of the second inserting rod 51 is welded with the third end plate 55, and two ends of the third spring 54 are respectively welded on the mounting plate 16 and the lower end face of the third end plate 55, and the second inserting rod 51 is positioned in the center groove 35.
The number of the rotary push plates 6 is two, the hinging holes are formed in the center positions of the side surfaces of the rotary push plates 6, the hinging columns 13 are hinged in the hinging holes, limiting bolts 14 are used for limiting, limiting grooves 61 are formed in the upper ends of the rotary push plates 6, limiting columns 46 are inserted into the limiting grooves 61, the width of the limiting grooves 61 is equal to the diameter of the limiting columns 46, the rotary push plates 6 are always contacted with the jacking columns 45, the second springs 47 are positioned between the second end plates 48 and the rotary push plates 6, the other ends of the second springs 47 are contacted with the rotary push plates 6, namely, positioned on one side, away from the jacking columns 45, of the rotary push plates 6, a connecting frame 62 is fixedly arranged at the lower ends of the rotary push plates 6, first through grooves 63 are formed in the connecting frame 62, second through grooves 64 are symmetrically formed in two sides of the first through grooves 63, third inserting rods 71 are inserted into the first through grooves 63, and the width of the first through grooves 63 are equal to the diameter of the third inserting rods 71.
The third inserted link 71 is inserted in the second inserted link 7, the second inserted link 7 is inserted in the matching insertion holes 12 on two sides of the port sleeve 11, the third inserted link 71 is sleeved with a fifth spring 73, the second insertion hole is formed in the second inserted link 7, the third inserted link 71 is partially inserted in the second insertion hole, one end of the fifth spring 73 is welded on the second inserted link 7, the other end of the fifth spring is contacted with the rotary push plate 6, connecting inserted links 72 are symmetrically and fixedly arranged on two sides of one end, far away from the second inserted link 7, of the third inserted link 71, the connecting inserted links 72 are inserted in the second through grooves 64, and the diameter of the connecting inserted links 72 is equal to the width of the second through grooves 64.
When the pump cover 2 is installed, the sealing plug bush 21 is plugged into the port bush 11, in the plugging process, the conical surface of the conical surface T-shaped plate 34 is abutted against the circular arc plug bush 4, then along with the movement of the pump cover 2, the two circular arc plug bushes 4 are pushed away back to back under the action of the conical surface until the circular arc groove 36 reaches the position of the circular arc plug bush 4, then the circular arc plug bush 4 is plugged into the circular arc groove 36 under the action of the first spring 42, in the moving process of the circular arc plug bush 4, the first plug post 5 is moved downwards under the action of the inclined surface lower pressing block 49 to be abutted against the sealing plug bush 21, so that along with the continued movement of the circular arc plug bush 4, the second plug post 51 is further moved towards the inside of the first plug bush until the auxiliary fixing hole 22 is aligned with the matched plug bush 12, so that the first plug post 5 is plugged into the auxiliary fixing hole 22 under the action of the fourth spring 56, the circular arc insert 4 is inserted into the circular arc groove 36, the first insert 5 can not withdraw from the auxiliary fixing hole 22, the circular arc insert 4 pushes the rotary push plate 6 to rotate under the action of the jack post 45 in the moving process, the lower end of the rotary push plate 6 pushes the third insert 71 to move, the second insert 7 is inserted into the auxiliary fixing hole 22 by the same principle as the first insert 5, thus realizing the dual fixing of the pump cover 2, ensuring the mounting firmness of the pump cover 2, when the pump cover 2 needs to be disassembled, the screw thread guide rod 33 rotates to drive the movable lock plate 3 to move upwards, so that the circular arc groove 36 is separated from the circular arc insert 4, the reset of the circular arc insert 4 can be realized under the action of the first spring 42, the reset of the first insert 5 and the second insert 7 can be realized, the pump cover 2 can be taken down, the operation is very simple, convenient and quick.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. Four-quadrant crescent gear pump, including the pump body (1), its characterized in that: the front end of pump body (1) is fixed and is provided with port cover (11), cooperation jack (12) have been seted up respectively to the upper end and the both sides of port cover (11), and the symmetry is fixed on pump body (1) of port cover (11) both sides is provided with articulated post (13), threaded connection has stop screw (14) on articulated post (13), front end upside symmetry welding of pump body (1) has installation piece (15), the spliced eye has been seted up on installation piece (15), welding mounting panel (16) on the upper end intermediate position of pump body (1), the movable hole has been seted up on mounting panel (16), the front end of pump body (1) is covered with pump cover (2), one side fixed being provided with of pump cover (2) seals plug bush (21), seal plug bush (21) are pegged graft in port cover (11), and seal plug bush (21)'s upper end and both sides have been seted up auxiliary fixing hole (22) respectively, auxiliary fixing hole (22) and cooperation jack (12) are aligned, set up the spliced eye (23) on pump cover (2), quick-release mechanism (23) have been seted up through moving hole (24), quick-release mechanism (3) are installed on pump cover (2), quick-release mechanism (3) are including quick-release mechanism (3) The first inserting column (5), the rotary push plate (6) and the second inserting column (7), the movable lock plate (3) is inserted into the moving hole (23), the width of the movable lock plate (3) is equal to that of the moving hole (23), the upper end of the movable lock plate (3) is provided with the mounting hole (31), the bearing (32) is arranged in the mounting hole (31), the bearing (32) is matched with the threaded guide rod (33), the threaded guide rod (33) is in threaded connection with the threaded hole (24), one end of the movable lock plate (3) is fixedly provided with the conical surface T-shaped plate (34), the middle position of the conical surface T-shaped plate (34) is provided with the central groove (35), the two sides of the conical surface T-shaped plate (34) are symmetrically provided with the circular arc grooves (36), the circular arc grooves (36) are inserted with the circular arc inserting blocks (4), the plane ends of the circular arc inserting blocks (4) are welded with the first inserting rods (41), the first inserting rods (41) are inserted into the holes in the mounting blocks (15), the first inserting rods (41) are in threaded holes, the first inserting rods (41) are welded with the first connecting plates (41) and are welded with the first connecting plates (44) at the ends of the first inserting rods (41), the utility model discloses a plug-in type socket, including jack post (45) and pivoted push pedal (6), be provided with spacing post (46) on jack post (45), peg graft on first plug-in post (5) and have second inserted bar (51), cup joint fourth spring (56) on second inserted bar (51) of fourth spring (56) upside, the welding has rectangular backup pad (52) on the second inserted bar (51), the both ends upside symmetry welding of rectangular backup pad (52) has by pressure post (53), the up end of by pressure post (53) is the arcwall, and by pressure post (53) and inclined plane lower briquetting (49) contact, pivoted push pedal (6) are two, and have offered the hinge hole on the side central point of pivoted push pedal (6), articulated in the hinge hole have articulated post (13), and limit groove (61) have been seted up through the upper end of limit screw (14), peg graft in limit groove (61), the fixed link (62) that are provided with in the lower extreme of pivoted push pedal (6), link (62) are equipped with in first through groove (63) and second inserted bar (71) in second through groove (63), the second inserting columns (7) are inserted into the matching insertion holes (12) on two sides of the port sleeve (11), the third inserting rods (71) are sleeved with fifth springs (73), connecting inserting columns (72) are symmetrically and fixedly arranged on two sides of one ends, far away from the second inserting columns (7), of the third inserting rods, and the connecting inserting columns (72) are inserted into the second through grooves (64).
2. The four-quadrant internal gear pump of claim 1, wherein: the limiting post (46) is sleeved with a second spring (47), the end part of the limiting post (46) is welded with a second end plate (48), and an inclined-surface pressing block (49) is fixedly arranged on the connecting plate (44) at the lower side of one end of the connecting plate, which is far away from the first inserting rod (41).
3. The four-quadrant internal gear pump of claim 2, wherein: the second inserting rod (51) is inserted into the movable hole, a third spring (54) is sleeved on the second inserting rod (51), the third spring (54) is located on the upper side of the mounting plate (16), a third end plate (55) is welded at the upper end of the second inserting rod (51), and the second inserting rod (51) is located in the central groove (35).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211466823.4A CN115773239B (en) | 2022-11-22 | 2022-11-22 | Four-quadrant internal gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211466823.4A CN115773239B (en) | 2022-11-22 | 2022-11-22 | Four-quadrant internal gear pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115773239A CN115773239A (en) | 2023-03-10 |
| CN115773239B true CN115773239B (en) | 2023-12-26 |
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ID=85389830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211466823.4A Active CN115773239B (en) | 2022-11-22 | 2022-11-22 | Four-quadrant internal gear pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115773239B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5700140A (en) * | 1996-05-03 | 1997-12-23 | Corken, Inc. | Pump with improved bearing arrangement for axial position control |
| CA2703389A1 (en) * | 2010-05-07 | 2011-11-07 | Dan Paval | Gear pump |
| CN213503403U (en) * | 2020-09-23 | 2021-06-22 | 上海嘉泰纸制品有限公司 | Prevent liquid impregnated corrugated box |
| CN216523239U (en) * | 2021-11-15 | 2022-05-13 | 江苏富通空调净化设备制造有限公司 | High-efficient tubular heat exchanger |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3120027A4 (en) * | 2014-03-21 | 2017-12-06 | Imo Industries Inc. | Gear pump with end plates or bearings having spiral grooves |
| CN218199808U (en) * | 2022-09-02 | 2023-01-03 | 温州临港包装有限公司 | Packing box with location structure |
-
2022
- 2022-11-22 CN CN202211466823.4A patent/CN115773239B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5700140A (en) * | 1996-05-03 | 1997-12-23 | Corken, Inc. | Pump with improved bearing arrangement for axial position control |
| CA2703389A1 (en) * | 2010-05-07 | 2011-11-07 | Dan Paval | Gear pump |
| CN213503403U (en) * | 2020-09-23 | 2021-06-22 | 上海嘉泰纸制品有限公司 | Prevent liquid impregnated corrugated box |
| CN216523239U (en) * | 2021-11-15 | 2022-05-13 | 江苏富通空调净化设备制造有限公司 | High-efficient tubular heat exchanger |
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| Publication number | Publication date |
|---|---|
| CN115773239A (en) | 2023-03-10 |
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