CN213392633U - Plunger pump packing structure - Google Patents
Plunger pump packing structure Download PDFInfo
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- CN213392633U CN213392633U CN202022418101.4U CN202022418101U CN213392633U CN 213392633 U CN213392633 U CN 213392633U CN 202022418101 U CN202022418101 U CN 202022418101U CN 213392633 U CN213392633 U CN 213392633U
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Abstract
The utility model discloses a plunger pump packing structure, belonging to the field of plunger pump packing design; comprises a plunger and a packing sleeve; the plunger is sleeved with a packing sleeve; the left end of the packing sleeve is connected with a flange, the first joint is arranged in the middle of the packing sleeve, the second joint is arranged on the flange, an inner cavity of the packing sleeve is provided with a labyrinth ring, the inner cavity of the packing sleeve is also provided with steps, the inner cavity of the packing sleeve is positioned between the first joint and the steps, and first sealing rings are respectively arranged between the first joint and the second joint; the utility model discloses leak still less, the life-span is longer, and the shut down still less.
Description
Technical Field
The utility model relates to a plunger pump filler structure belongs to plunger pump filler design field.
Background
The plunger pump is used as common equipment for conveying high-viscosity fluid, and is responsible for conveying high corrosivity and toxicity in various industries. The service life and reliability of the plunger pump seal directly affect the service performance and reliability of the device.
The stuffing box assembly of the plunger pump is a transition sealing area for connecting the power end and the hydraulic end of the pump, is also a sealing bag for generating vacuum degree in the reciprocating work doing of the power end, and mainly comprises the stuffing box, a plunger, a guide ring, stuffing, a choking ring and the like. The amount of filler is usually selected according to the pressure rating, 4, 5, 6 or more. However, the more the filler, the longer the sealing band is, the heat is generated from friction, when the sealing band is too long, the friction power loss is large, and when the sealing band is too small, the pressure can not seal, the leakage rate is increased, the sealing life is shortened, and the sealing device is especially important for controlling the leakage among plunger fillers of some polluted and corroded media.
In addition, the plunger is a single pivot, so that the requirement of coaxiality inevitably occurs between the plunger and the stuffing box during assembly, and the requirement of coaxiality inevitably occurs between the sealing ring and the plunger because the sealing ring is coaxial with the stuffing box in the stuffing box. The assembly back clamping ring all has the power that comes from the radial direction of plunger to be compelled constantly with sealing ring etc. and not only makes deformation such as sealing ring serious, and aggravation wearing and tearing have reduceed plunger pump filler sealed effect moreover greatly for pump export department flow, pressure are unstable, leak seriously, and life is short, has increased the cost of overhaul, has reduced production efficiency.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides a plunger pump packing structure.
The utility model adopts the technical proposal that: designing a plunger pump packing structure, which comprises a plunger and a packing sleeve; the plunger is sleeved with a packing sleeve; the plunger pump packing structure further comprises a first joint, a flange, a second joint, a first sealing ring, a first pressing ring, a labyrinth ring, a second sealing ring, a second pressing ring, a first nut and a second nut; the left end of the packing sleeve is connected with a flange, the first joint is arranged in the middle of the packing sleeve and is communicated with an inner cavity of the packing sleeve, the second joint is arranged on the flange and is communicated with an inner cavity of the packing sleeve, labyrinth rings are respectively arranged at positions of the inner cavity of the packing sleeve, which are just opposite to the first joint and the second joint, a step is arranged at the right end of the inner cavity of the packing sleeve, first sealing rings are respectively arranged between the first joint and the step and between the first joint and the second joint in the inner cavity of the packing sleeve, first pressing rings are respectively arranged at two sides of the first sealing rings, the first nut is connected with the left end of the packing sleeve, a plurality of second sealing rings are arranged at the right end of the inner cavity of the first nut, second pressing rings are respectively arranged at two sides of each second sealing ring, the second nuts are connected with the first nuts, and the first sealing rings, the first, and the second sealing ring, the second pressing ring and the second nut are respectively arranged between the plunger and the first nut.
Further, still be provided with first gasket between plunger and the packing cover, first gasket laminating is in the step of packing cover inner chamber.
Further, a combined pad is arranged between the first joint and the packing sleeve, and a second gasket is arranged between the second joint and the packing sleeve.
Furthermore, a first adjusting gasket is arranged between the right end of the first nut and the left side of the labyrinth ring right opposite to the second joint, and a second adjusting gasket is arranged at the right end of the second nut.
Further, the right outer edges of the first adjusting gasket and the second adjusting gasket are respectively provided with a first sealing ring and a second sealing ring.
Furthermore, the first sealing ring and the second sealing ring are both O-shaped rings.
Furthermore, four first sealing rings are arranged between the first joint and the step.
Compared with the prior art, the beneficial effects of the utility model are that:
the packing of the utility model consists of a main packing and an auxiliary packing, wherein the main packing comprises a first sealing ring and a first compression ring on the right side of a first joint, and the auxiliary packing comprises a first sealing ring, a first compression ring, a second sealing ring and a second compression ring on the left side of the first joint; the first joint is used as a nitrogen-filled leakage recovery device, namely nitrogen seal and leakage recovery are arranged between the main packing and the auxiliary packing; the main packing and the auxiliary packing are divided into two-stage sealing, the main packing and the auxiliary packing are more favorably compressed, the sealing effect is improved, the main packing is pushed by the second nut to push the auxiliary packing and the first nut to push the first adjusting gasket to compress the main packing, the plunger is ensured to be lubricated by supplementing lubricating oil at any time in the running process, the polishing process is realized on the surfaces of the plunger and the main packing under the lubricating action, and the service life of the surface formed sealing strip is prolonged. The second joint is used as a water-flushing cooling joint, namely a water-flushing cooling device is arranged between the auxiliary fillers, so that heat dissipation and temperature reduction are realized, the plunger pump is protected, and maintenance and replacement are reduced.
The main packing sealing ring and the auxiliary packing sealing ring of the utility model are designed into a forming structure, and the material adopts CFRP composite plastics with excellent self-lubricating performance and mechanical performance; the plunger labyrinth ring is made of PEEK composite plastic with excellent wear resistance and mechanical property. The utility model discloses the filler subassembly is under the normal prerequisite of operating condition, and its life-span is not less than six months. The temperature of the plunger at the stuffing box is not more than 10 ℃ compared with that of a medium; the temperature of the plunger can be controlled within 60 ℃. And no pump around the stuffing box delivers the media flavor.
The utility model can ensure less leakage, longer service life and less shutdown; the usable original paper of packing cover and flange reforms transform, practices thrift the cost. The coaxiality between the plunger and the packing sleeve, between the plunger and the labyrinth ring and between the plunger and the seal ring is higher, the force of the plunger acting on the labyrinth ring, the seal ring and the like is more uniform, and the overall performance of the packing sealing structure is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings 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 the drawings without creative efforts.
Fig. 1 is a schematic view of the present invention.
In the figure: 1-second nut, 2-first nut, 3-second adjusting gasket, 4-second sealing ring, 5-second sealing ring, 6-second pressing ring, 7-first adjusting gasket, 8-first sealing ring, 9-second gasket, 10-second joint, 11-first joint, 12-combined gasket, 13-first pressing ring, 14-first sealing ring, 15-first gasket, 16-packing sleeve, 17-labyrinth ring, 18-flange and 19-plunger.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" should be construed broadly and include, for example, fixed connections, detachable connections, or integral connections; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, in the description of the present invention, unless otherwise specified, the terms "plurality", and "plural groups" mean two or more, and the terms "a plurality", and "a plurality" mean one or more. In the description of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like are used, they are only used for convenience of description and simplification of the description, and they do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation and be operated, and thus should not be construed as limiting the present invention. Furthermore, the use of the terms first, second and third are used for descriptive purposes only and are not intended to indicate or imply relative importance.
Example 1
As shown in fig. 1: a plunger pump packing structure comprises a plunger 19 and a packing sleeve 16; a packing sleeve 16 is sleeved outside the plunger 19; the method is characterized in that: the sealing device further comprises a first connector 11, a flange 18, a second connector 10, a first sealing ring 14, a first pressing ring 13, a labyrinth ring 17, a second sealing ring 5, a second pressing ring 6, a first nut 2 and a second nut 1; the left end of the packing sleeve 16 is connected with a flange 18, the first joint 11 is arranged in the middle of the packing sleeve 16 and communicated with an inner cavity of the packing sleeve, the second joint 10 is arranged on the flange 18 and communicated with the inner cavity of the packing sleeve 16, the inner cavity of the packing sleeve 16 is just provided with labyrinth rings 17 at the positions of the first joint 11 and the second joint 10, the right end of the inner cavity of the packing sleeve 16 is provided with a step, the inner cavity of the packing sleeve 16 is positioned between the first joint 11 and the step and between the first joint 11 and the second joint 10, the first sealing rings 14 are respectively arranged at two sides of the first sealing rings 14, the first nut 2 is connected with the left end of the packing sleeve 16, the right end of the inner cavity of the first nut 2 is provided with a plurality of second sealing rings 5, the second clamping rings 6 are respectively arranged at two sides of each second sealing ring 5, the second nut 1 is connected with the first nut 2, the first sealing, First clamping ring 13, labyrinth ring 17 and first nut 2 set up respectively between plunger 19 and packing cover 16, second sealing ring 5, second clamping ring 6 and second nut 1 set up respectively between plunger 19 and first nut 2.
A first gasket 15 is further arranged between the plunger 19 and the packing sleeve 16, and the first gasket 15 is attached to a step of an inner cavity of the packing sleeve 16. A combined gasket 12 is arranged between the first joint 11 and the packing sleeve 16, and a second gasket 9 is arranged between the second joint 10 and the packing sleeve 16.
A first adjusting gasket 7 is arranged between the right end of the first nut 2 and the left side of the labyrinth ring 17 right facing the second joint 10, and a second adjusting gasket 3 is arranged at the right end of the second nut 1. And the right outer edges of the first adjusting gasket 7 and the second adjusting gasket 3 are respectively provided with a first sealing ring 8 and a second sealing ring 4. The first sealing ring 8 and the second sealing ring 4 are both O-shaped rings.
Four first sealing rings 14 are arranged between the first joint 11 and the step, and eight first pressing rings 13 are correspondingly arranged.
While the present invention has been described in detail with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (7)
1. A plunger pump packing structure comprises a plunger (19) and a packing sleeve (16); a filling sleeve (16) is sleeved outside the plunger (19); the method is characterized in that: the sealing device further comprises a first joint (11), a flange (18), a second joint (10), a first sealing ring (14), a first pressing ring (13), a labyrinth ring (17), a second sealing ring (5), a second pressing ring (6), a first nut (2) and a second nut (1); the left end of the packing sleeve (16) is connected with a flange (18), the first joint (11) is arranged in the middle of the packing sleeve (16) and communicated with an inner cavity of the packing sleeve, the second joint (10) is arranged on the flange (18) and communicated with the inner cavity of the packing sleeve (16), labyrinth rings (17) are respectively arranged at positions of the inner cavity of the packing sleeve (16) right facing the first joint (11) and the second joint (10), a step is arranged at the right end of the inner cavity of the packing sleeve (16), the inner cavity of the packing sleeve (16) is positioned between the first joint (11) and the step, first sealing rings (14) are respectively arranged between the first joint (11) and the second joint (10), first pressing rings (13) are respectively arranged at two sides of the first sealing rings (14), the first nut (2) is connected to the left end of the packing sleeve (16), and a plurality of second sealing rings (5) are arranged at the right end of the inner cavity of the first nut, every second sealing ring (5) both sides set up second clamping ring (6) respectively, second nut (1) is connected in first nut (2), first sealing ring (14), first clamping ring (13), labyrinth ring (17) and first nut (2) set up respectively between plunger (19) and packing cover (16), second sealing ring (5), second clamping ring (6) and second nut (1) set up respectively between plunger (19) and first nut (2).
2. The plunger pump packing structure according to claim 1, wherein: a first gasket (15) is further arranged between the plunger (19) and the packing sleeve (16), and the first gasket (15) is attached to a step of an inner cavity of the packing sleeve (16).
3. The plunger pump packing structure according to claim 1, wherein: a combined pad (12) is arranged between the first joint (11) and the packing sleeve (16), and a second gasket (9) is arranged between the second joint (10) and the packing sleeve (16).
4. The plunger pump packing structure according to claim 1, wherein: a first adjusting gasket (7) is arranged between the right end of the first nut (2) and the left side of the labyrinth ring (17) right opposite to the second joint (10), and a second adjusting gasket (3) is arranged at the right end of the second nut (1).
5. The plunger pump packing structure according to claim 4, wherein: and the right outer edges of the first adjusting gasket (7) and the second adjusting gasket (3) are respectively provided with a first sealing ring (8) and a second sealing ring (4).
6. The plunger pump packing structure according to claim 5, wherein: the first sealing ring (8) and the second sealing ring (4) are O-shaped rings.
7. The plunger pump packing structure according to claim 1, wherein: four first sealing rings (14) are arranged between the first joint (11) and the step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022418101.4U CN213392633U (en) | 2020-10-27 | 2020-10-27 | Plunger pump packing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022418101.4U CN213392633U (en) | 2020-10-27 | 2020-10-27 | Plunger pump packing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213392633U true CN213392633U (en) | 2021-06-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022418101.4U Active CN213392633U (en) | 2020-10-27 | 2020-10-27 | Plunger pump packing structure |
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| Country | Link |
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| CN (1) | CN213392633U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113719447A (en) * | 2021-09-28 | 2021-11-30 | 宝鸡航天动力泵业有限公司 | Quick-change sealing device for plunger pump and plunger pump |
-
2020
- 2020-10-27 CN CN202022418101.4U patent/CN213392633U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113719447A (en) * | 2021-09-28 | 2021-11-30 | 宝鸡航天动力泵业有限公司 | Quick-change sealing device for plunger pump and plunger pump |
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