CN220566229U - Novel low-flow plunger pump enhanced return reliability device - Google Patents
Novel low-flow plunger pump enhanced return reliability device Download PDFInfo
- Publication number
- CN220566229U CN220566229U CN202322207457.7U CN202322207457U CN220566229U CN 220566229 U CN220566229 U CN 220566229U CN 202322207457 U CN202322207457 U CN 202322207457U CN 220566229 U CN220566229 U CN 220566229U
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- plunger
- shaped locking
- return
- locking block
- pull rod
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- 230000003014 reinforcing effect Effects 0.000 claims description 2
- 230000002708 enhancing effect Effects 0.000 abstract description 5
- 238000012271 agricultural production Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Details Of Reciprocating Pumps (AREA)
Abstract
The utility model relates to a novel device for enhancing return reliability of a small-flow plunger pump, which is characterized in that the left side of a plunger push-pull rod is slotted and is connected with one end of a U-shaped locking block, the other end of the U-shaped locking block is connected with an eccentric wheel bearing, the opening end of the U-shaped locking block is connected with a cover plate, the upper part of one end on the right side of the cover plate is abutted to the plunger push-pull rod, a screw A is connected with the left side of the U-shaped locking block and the left side of the cover plate, and a screw B is connected with the right side of the U-shaped locking block and the right side of the cover plate. According to the utility model, when the eccentric wheel bearing pushes the plunger push-pull rod to move forwards, the U-shaped locking block does not work; under normal conditions, plunger return force is provided by spring force, and the U-shaped locking piece is not functional. When the return resistance is increased, the return force of the plunger is provided by the spring and the U-shaped locking piece together, so that the return reliability of the plunger is improved, and the phenomenon of stopping the plunger pump caused by insufficient spring force is avoided.
Description
Technical Field
The utility model relates to the field of plunger pumps, in particular to a novel device for enhancing return reliability of a small-flow plunger pump.
Background
The plunger pump is a positive displacement pump which generates high pressure and quantity by the movement of a plunger and a suction valve and a discharge valve, and has wide application in a plurality of fields such as chemical industry, machinery, agricultural production and the like. In a small flow plunger pump, the elastic force of a compression spring is often used as the return power of the plunger. Under most working conditions, the designed spring force is far greater than the return resistance of the plunger, so that the plunger can normally move, and the suction valve and the discharge valve can normally work. However, under some special working conditions, for example, chemical media leaked from the plunger pump are crystallized or solidified after the chemical media is in contact with the atmosphere or the plunger pump is deactivated for a long time, so that the return resistance of the plunger is increased. When the thrust of the spring is insufficient to overcome the return resistance of the plunger, the plunger pump cannot work normally and stops. The novel device for enhancing the return reliability of the small-flow plunger pump exactly solves the problem by arranging the U-shaped locking block structure.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provide a novel device for enhancing return reliability of a small-flow plunger pump. The technical scheme adopted for solving the technical problems is as follows: the utility model discloses a novel low-flow plunger pump return reliability enhancing device which comprises a plunger, a supporting bearing B, a spring seat, a plunger push-pull rod, a supporting bearing A, a screw B, U type locking piece, an eccentric wheel bearing, a screw A and a connecting cover plate.
Compared with the prior art, the utility model has the following beneficial effects:
the utility model has reasonable structural design, and the U-shaped locking block does not work when the eccentric wheel bearing pushes the plunger push-pull rod to move forwards; under normal conditions, plunger return force is provided by spring force, and the U-shaped locking piece is not functional. When the return resistance is increased, the return force of the plunger is provided by the spring and the U-shaped locking piece together, so that the return reliability of the plunger is improved, and the phenomenon of stopping the plunger pump caused by insufficient spring force is avoided.
Drawings
Fig. 1: the embodiment of the utility model is a schematic structural diagram.
In the figure: plunger 1, supporting bearing B2, spring 3, spring holder 4, plunger push-pull rod 5, supporting bearing A6, screw B7, U-shaped locking piece 8, eccentric 9, eccentric bearing 10, screw A11, connection apron 12.
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 utility model provides a novel low discharge plunger pump reinforcing return stroke reliability device, includes plunger 1, supporting bearing B2, spring 3, spring holder 4, plunger push-and-pull rod 5, supporting bearing A6, screw B7, U type latch segment 8, eccentric wheel 9, eccentric wheel bearing 10, screw A11, connection apron 12, its characterized in that the left side fluting of plunger push-and-pull rod 5 connects the one end of U type latch segment 8, eccentric wheel bearing 10 is connected to the U type latch segment 8 other end, apron 12 is connected to U type latch segment 8 open end, apron 12 right side one end top is kept close to plunger push-and-pull rod 5, screw A11 connect U type latch segment 8 left side with apron 12 left side, U type latch segment 8 right side is connected to screw B7 with apron 12 right side.
Principle of action:
when the eccentric wheel bearing 10 pushes the plunger push-pull rod 5 to move forwards, the U-shaped locking block 8 does not work; under normal conditions, the plunger return force is provided by the spring force and the U-lock block 8 is deactivated. When the return resistance is increased, the return force of the plunger is provided by the spring 3 and the U-shaped locking block 8, so that the return reliability of the plunger 1 is improved, and the phenomenon of stopping the plunger pump due to insufficient spring force is avoided.
Although embodiments of the present utility model 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 utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (1)
1. The utility model provides a novel low discharge plunger pump reinforcing return stroke reliability device, includes plunger (1), support bearing B (2), spring (3), spring holder (4), plunger push-and-pull rod (5), support bearing A (6), screw B (7), U type latch segment (8), eccentric wheel (9), eccentric wheel bearing (10), screw A (11), connection apron (12), its characterized in that, the left side fluting of plunger push-and-pull rod (5), the one end of connecting U type latch segment (8), eccentric wheel bearing (10) are connected to U type latch segment (8) other end, apron (12) are connected to U type latch segment (8) open end, apron (12) right side one end top is held near plunger push-and-pull rod (5), U type latch segment (8) left side with apron (12) left side is connected to screw A (11), U type latch segment (8) right side with apron (12) right side is connected to screw B (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322207457.7U CN220566229U (en) | 2023-08-16 | 2023-08-16 | Novel low-flow plunger pump enhanced return reliability device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322207457.7U CN220566229U (en) | 2023-08-16 | 2023-08-16 | Novel low-flow plunger pump enhanced return reliability device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220566229U true CN220566229U (en) | 2024-03-08 |
Family
ID=90103750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322207457.7U Active CN220566229U (en) | 2023-08-16 | 2023-08-16 | Novel low-flow plunger pump enhanced return reliability device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220566229U (en) |
-
2023
- 2023-08-16 CN CN202322207457.7U patent/CN220566229U/en active Active
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