CN220890479U - Novel double-sealing stuffing box assembly - Google Patents
Novel double-sealing stuffing box assembly Download PDFInfo
- Publication number
- CN220890479U CN220890479U CN202322561261.8U CN202322561261U CN220890479U CN 220890479 U CN220890479 U CN 220890479U CN 202322561261 U CN202322561261 U CN 202322561261U CN 220890479 U CN220890479 U CN 220890479U
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- packing
- plunger
- box
- stuffing box
- sleeve
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- 238000007789 sealing Methods 0.000 title abstract description 19
- 238000012856 packing Methods 0.000 claims abstract description 94
- 238000011010 flushing procedure Methods 0.000 claims abstract description 31
- 125000006850 spacer group Chemical group 0.000 claims abstract description 18
- 238000003825 pressing Methods 0.000 claims description 25
- 239000000945 filler Substances 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 4
- 238000002425 crystallisation Methods 0.000 abstract description 3
- 230000008025 crystallization Effects 0.000 abstract description 3
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 238000007711 solidification Methods 0.000 abstract description 2
- 230000008023 solidification Effects 0.000 abstract description 2
- 238000005406 washing Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 238000004140 cleaning Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Sealing Devices (AREA)
Abstract
The utility model discloses a novel double-seal stuffing box assembly, which relates to the technical field of reciprocating pump sealing. Through putting into packing spacer ring, packing, uide bushing one and spring in proper order in the hole of packing box high pressure seal area, then use the spanner, screw lock nut into the screw thread of packing box to realize quick installation, flow the flushing medium left along flushing the long ring channel in cover outside, in the hole entering flushing the inside ring channel of cover through flushing the radial distribution in cover left side, avoid the high pressure region medium to leak outside the packing box, cause crystallization, solidification or environmental pollution, improve the life of plunger and sealing member simultaneously.
Description
Technical Field
The utility model relates to the technical field of reciprocating pump sealing, in particular to a novel double-sealing stuffing box assembly.
Background
Plunger pumps are a common category of reciprocating pumps, often used to deliver various types of liquid media, and are often used in applications where the pressure is relatively high and the flow is relatively low, as compared to centrifugal pumps.
Plunger seal is one of the key points of plunger pump design, directly influences the performance of pump, when plunger seal is bad, often can give the maintenance work agency difficulty of pump, the packing of plunger front end is used for sealing the high-pressure region, the packing of plunger rear end is used for sealing the low-pressure region, establish the washing district between the high-low pressure region for use cleaning medium to wash the plunger, take away the medium that the high-pressure region leaked, current double seal structure, plunger radial direction size is great, the plunger interval of multi-plunger reciprocating pump is limited because of the size restriction, often can't design the great plunger of diameter, and current plunger seal structure can not compress tightly automatically, it leaks to take place the high-pressure region medium after using a period easily.
Disclosure of utility model
The utility model provides a novel double-seal stuffing box assembly, which has the advantages of reducing the radial size of a double-seal structure, and improving the diameter of a plunger under the condition that the plunger distance of a reciprocating pump is unchanged. Meanwhile, the high-pressure sealing structure is automatically pressed, and leakage of medium in a high-pressure area is reduced, so that the problems that the traditional plunger is large in size, limited in distance and poor in sealing performance, and the medium is easy to leak are solved.
In order to achieve the above object, the present utility model provides the following technical solutions: the novel double-seal stuffing box assembly comprises a plunger, a round nut is sleeved on the outer side of the plunger, a stuffing pressing sleeve is sleeved on the outer side of the plunger, stuffing is arranged at one end of the stuffing pressing sleeve, a guide sleeve II is sleeved on the outer side of the plunger and one end of the stuffing, a stuffing box is sleeved on the outer side of the plunger, the stuffing box is sleeved with the round nut, a stuffing spacer ring is arranged on the inner wall of the stuffing box, a flushing sleeve is arranged on the inner wall of the stuffing box, a guide sleeve I is arranged on the inner wall of the stuffing box, a spring is arranged on the inner side wall of the stuffing box, an O-shaped ring is arranged at one end of the stuffing box, and a locking nut is arranged at one end of the stuffing box.
As a preferable technical scheme of the utility model, the plunger is of a stepped shaft structure, the thicker end of the plunger is contacted with the filler, and the small head at the left side of the plunger is connected with the transmission end.
As a preferable technical scheme of the utility model, the round nut is connected with the left end of the stuffing box through threads, and holes distributed radially are arranged on the outer side of the round nut.
As a preferable technical scheme of the utility model, the packing pressing sleeve is of a sleeve-shaped structure, an annular groove is formed in the outer side of the packing pressing sleeve, the packing pressing sleeve is arranged in the packing box, the outer circle of the packing pressing sleeve is matched with the packing box, and a certain gap is formed between the inner side of the packing pressing sleeve and the plunger.
As a preferable technical scheme of the utility model, the stuffing box is in a sleeve-shaped structure, a long annular groove is formed in the inner side of the flushing sleeve, two rows of radial uniformly distributed overflow holes are formed in two sides of the groove, a short annular groove is formed in the outer side of the left overflow hole, a short annular groove is formed in the outer side of the right overflow hole, the left outer annular groove is communicated with a threaded hole in the upper end of the stuffing box, and the right outer annular groove is communicated with a threaded hole below the stuffing box.
As a preferable technical scheme of the utility model, the packing spacer ring is of an annular structure, the outer side of the packing spacer ring is contacted with the packing box, the inner side of the packing spacer ring is contacted with the plunger, and the planes of the two sides of the packing spacer ring are contacted with the packing.
As a preferable technical scheme of the utility model, the flushing sleeve is of a sleeve-shaped structure, the outer side of the flushing sleeve is provided with a stepped shaft-shaped structure with different sizes, the inner side of the flushing sleeve is provided with a stepped hole, the inner side of the flushing sleeve is provided with threads, the flushing sleeve is connected with a locking nut, and the outer circle of the left side of the stuffing box is provided with external threads and is connected with a round nut.
As a preferable technical scheme of the utility model, the lock nut is of a sleeved structure, the outer circle of the lock nut is provided with threads, the inner side of the lock nut is provided with through holes, and the right side end face of the lock nut is provided with radially distributed grooves.
Compared with the prior art, the utility model provides a novel double-sealing stuffing box assembly, which comprises the following components
The beneficial effects are that:
This novel double-seal stuffing box subassembly, through putting into packing spacer ring, packing, uide bushing one and spring in proper order in the downthehole of packing box high pressure seal area, then use the spanner, screw lock nut into the screw thread of packing box, thereby realize quick installation, flow the flushing medium left along flushing the long ring channel in cover outside, the hole that radially distributes in the left side of flushing the cover gets into flushing the inside ring channel of cover, flow right, the plunger is washed, the hole that radially distributes in the right side of flushing the cover is passed through, the outside ring channel in the right side of flushing the cover is flowed, screw hole through flushing the cover lower extreme flows out the packing box, wherein the medium that the high pressure district leaked can be taken away in the in-process of flushing, avoid the high pressure district medium to leak outside the packing box, cause crystallization, solidify or environmental pollution, improve the life of plunger and sealing member simultaneously.
Drawings
FIG. 1 is a schematic diagram of a double seal stuffing box assembly of the present utility model;
FIG. 2 is an exploded view of the stuffing box of the present utility model, shown in FIG. 1;
FIG. 3 is an exploded view of the stuffing box of the present utility model, schematically shown in FIG. 2.
In the figure: 1. a plunger; 2. a round nut; 3. packing pressing sleeve; 4. a filler; 5. a second guide sleeve; 6. flushing the sleeve; 7. a filler spacer ring; 8. a stuffing box; 9. a guide sleeve I; 10. a spring; 11. an O-ring; 12. and (5) locking the nut.
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.
Referring to fig. 1-3, the utility model discloses a novel double-seal stuffing box assembly, which comprises a plunger 1, wherein a round nut 2 is sleeved on the outer side of the plunger 1, a stuffing pressing sleeve 3 is sleeved on the outer side of the plunger 1, a stuffing 4 is arranged at one end of the stuffing pressing sleeve 3, a guide sleeve II 5 is sleeved on the outer side of the plunger 1 and one end of the stuffing 4, a stuffing box 8 is sleeved on the outer side of the plunger 1, the stuffing box 8 is sleeved with the round nut 2, a stuffing spacer ring 7 is arranged on the inner wall of the stuffing box 8, a flushing sleeve 6 is arranged on the inner wall of the stuffing box 8, a guide sleeve I9 is arranged on the inner wall of the stuffing box 8, a spring 10 is arranged on the inner side wall of the stuffing box 8, an O-shaped ring 11 is arranged at one end of the stuffing box 8, and a locking nut 12 is arranged at one end of the stuffing box 8;
wherein the packing 4 is arranged in the low-pressure area and the high-pressure area and is in a ring shape, the cross section is square, the outer side is contacted with the packing box 8, and the inner side is contacted with the plunger 1 to play a role in sealing;
the second guide sleeve 5 and the first guide sleeve 9 are in a circular ring structure, the outer side of the second guide sleeve is matched with the stuffing box 8, the inner side of the second guide sleeve contacts with the plunger 1 to play a certain sealing role, and the second guide sleeve 5 and the first guide sleeve 9 mainly play a guiding role and are used for limiting the radial movement of the plunger 1 so that the plunger 1 can only move along the axial direction of the plunger;
The spring 10 is arranged in the hole of the packing box 8, the left side of the spring 10 is pressed on the first guide sleeve 9, the right side of the spring is pressed on the lock nut 12, a certain gap is reserved between the packing box 8 and the plunger 1, and the spring is in a compressed state and is used for pressing the first guide sleeve 9 and the packing 4.
Specifically, the plunger 1 is in a stepped shaft structure, and the thicker end of the plunger 1 is in contact with the filler 4, wherein the small end at the left side of the plunger 1 is connected with the transmission end.
In this embodiment, the plunger 1 is connected through the round nut 2 and the stuffing box 8, wherein the plunger 1 cooperates with other parts to function as a liquid seal.
Specifically, the round nut 2 is connected with the left end of the stuffing box 8 through threads, and holes distributed radially are formed in the outer side of the round nut 2.
In this embodiment, radial holes are provided to allow the inner plane for tightening the round nut 2 with a wrench to contact the end surface of the packing press sleeve 3, and the tightness of the packing in the left low pressure area is adjusted by threads.
Specifically, the packing pressing sleeve 3 is of a sleeve-shaped structure, an annular groove is formed in the outer side of the packing pressing sleeve 3, the packing pressing sleeve 3 is arranged inside the packing box 8, the outer circle of the packing pressing sleeve is matched with the packing box 8, and a certain gap is formed between the inner side of the packing pressing sleeve 3 and the plunger 1.
In this embodiment, the packing pressing sleeve 3 is used for pressing a plurality of rings of packing contacted with the right side of the packing pressing sleeve, so as to adjust the leakage amount of the seal in the low-pressure area of the pump.
Specifically, the shape of the flushing sleeve 6 is a sleeve-shaped structure, a long annular groove is formed in the inner side of the flushing sleeve 6, two rows of radial and uniformly distributed overflow holes are formed in two sides of the groove, a short annular groove is formed in the outer side of the left overflow hole, a short annular groove is formed in the outer side of the right overflow hole, the left outer annular groove is communicated with a threaded hole in the upper end of the stuffing box 8, and the right outer annular groove is communicated with a threaded hole below the stuffing box 8.
In this embodiment, the annular groove arranged on the inner side of the flushing sleeve 6 is used for flushing, the annular groove arranged on the outer side is used for communicating the threaded hole of the stuffing box 8 with the overflow hole, and the flushing medium is led into the inner side flushing groove to realize cleaning.
Specifically, the packing spacer 7 has an annular structure, the outer side is in contact with the packing box 8, the inner side is in contact with the plunger 1, and the planes of the two sides are in contact with the packing 4.
In this embodiment, the packing spacer 7 serves to support the packing and prevent the packing 4 from deforming after compaction.
Specifically, the stuffing box 8 is a sleeve-shaped structure, the outer side of the stuffing box is provided with a stepped shaft-shaped structure with different sizes, the inner side of the stuffing box is provided with a stepped hole, the inner side of the stuffing box is provided with threads, the stuffing box is connected with the lock nut 12, and the outer circle of the left side of the flushing sleeve 6 is provided with external threads and is connected with the round nut 2.
In this embodiment, the upper and lower sides of the middle part of the stuffing box 8 are respectively provided with a threaded hole which is intersected with and communicated with the inner side hole. The inner side of the middle part of the hole is provided with a hole with a smaller diameter for axially positioning the left low-pressure sealing area part and the right high-pressure sealing area part, and the right end face of the stuffing box 8 is provided with a sealing ring groove for accommodating an O-shaped ring 11.
Specifically, the lock nut 12 is of a sleeved structure, the outer circle of the lock nut 12 is provided with threads, the inner side of the lock nut is provided with a through hole, and the right side end face is provided with radially distributed grooves.
In the embodiment, the locking nut 12 is used for locking a spanner to screw the nut, and the outer circle on the left side of the thread is matched with the inner hole of the stuffing box 8 to play a role in radial positioning.
The working principle and the using flow of the utility model are as follows: when the packing box is used, the packing spacer ring 7, the packing 4, the guide sleeve I9 and the spring 10 are sequentially placed into the hole of the high-pressure sealing area of the packing box 8, then the lock nut 12 is screwed into the thread of the packing box 8 by using a spanner, the flushing sleeve 6 is firstly placed into the left hole of the packing box 8, then the guide sleeve II 5, the packing 4, the packing spacer ring 7 and the packing pressing sleeve 3 are sequentially placed into the hole as shown in the figure 1, finally the round nut 2 is screwed into the left thread of the packing box 8 by using the spanner, and finally the plunger 1 is pressed into the packing box 8 from the right through hole of the packing box 8, so that the installation is completed, wherein the disassembly is opposite to the installation direction;
When the assembly is washed, firstly, a washing medium enters the stuffing box 8 along a threaded hole at the upper end of the stuffing box 8, flows leftwards along a long annular groove at the outer side of the washing sleeve 6, enters an annular groove inside the washing sleeve 6 through holes radially distributed at the left side of the washing sleeve 6, flows rightwards, washes the plunger 1, flows towards the annular groove at the outer right side of the washing sleeve 6 through holes radially distributed at the right side of the washing sleeve 6, flows out of the stuffing box 8 through the threaded hole at the lower end of the washing sleeve 6, and can take away the medium leaked in a high-pressure area in the washing process, so that the medium in the high-pressure area is prevented from leaking out of the stuffing box 8 to cause crystallization, solidification or environmental pollution, and meanwhile, the service lives of the plunger 1 and a sealing piece are prolonged.
It should be noted that in this document, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
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 (8)
1. Novel double containment stuffing box subassembly, including plunger (1), its characterized in that: round nut (2) have been cup jointed in the outside of plunger (1), packing press cover (3) have been cup jointed in the outside of plunger (1), the outside of plunger (1) just is located the one end of packing press cover (3) and is provided with packing (4), guide sleeve two (5) have been cup jointed in the outside of plunger (1) and the one end that is located packing (4), packing box (8) have been cup jointed in the outside of plunger (1), packing box (8) cup joint with round nut (2) and set up, the inner wall of packing box (8) is provided with packing spacer ring (7), the inner wall of packing box (8) is provided with washes cover (6), the inner wall of packing box (8) is provided with guide sleeve one (9), the inside wall of packing box (8) is provided with spring (10), the one end of packing box (8) is provided with O type circle (11), the one end of packing box (8) is provided with lock nut (12).
2. The novel double-seal stuffing box assembly according to claim 1, wherein: the plunger (1) is of a stepped shaft structure, the thicker end of the plunger is in contact with the filler (4), and the small end at the left side of the plunger (1) is connected with the transmission end.
3. The novel double-seal stuffing box assembly according to claim 1, wherein: the round nut (2) is connected with the left end of the stuffing box (8) through threads, and holes distributed radially are formed in the outer side of the round nut (2).
4. The novel double-seal stuffing box assembly according to claim 1, wherein: the packing pressing sleeve (3) is of a sleeve-shaped structure, an annular groove is formed in the outer side of the packing pressing sleeve, the packing pressing sleeve (3) is arranged inside the packing box (8), the outer circle of the packing pressing sleeve is matched with the packing box (8), and a certain gap is formed between the inner side of the packing pressing sleeve (3) and the plunger (1).
5. The novel double-seal stuffing box assembly according to claim 1, wherein: the shape of the flushing sleeve (6) is in a sleeve-shaped structure, a section of long annular groove is formed in the inner side of the flushing sleeve (6), two rows of radial evenly distributed overflow holes are formed in two sides of the groove, a section of short annular groove is formed in the outer side of the left overflow hole, a section of short annular groove is formed in the outer side of the right overflow hole, the left outer side annular groove is communicated with a threaded hole in the upper end of the stuffing box (8), and the right outer side annular groove is communicated with a threaded hole in the lower portion of the stuffing box (8).
6. The novel double-seal stuffing box assembly according to claim 1, wherein: the packing spacer ring (7) is of an annular structure, the outer side of the packing spacer ring is in contact with the packing box (8), the inner side of the packing spacer ring is in contact with the plunger (1), and the planes of the two sides of the packing spacer ring are in contact with the packing (4).
7. The novel double-seal stuffing box assembly according to claim 1, wherein: the packing box (8) is of a sleeve-shaped structure, the outer side of the packing box is provided with a stepped shaft-shaped structure with different sizes, the inner side of the packing box is provided with a stepped hole, the right side of the packing box is internally provided with threads, the packing box is connected with the locking nut (12), and the outer circle of the left side of the packing box (8) is provided with external threads and is connected with the round nut (2).
8. The novel double-seal stuffing box assembly according to claim 1, wherein: the locking nut (12) is of a sleeved structure, the outer circle of the locking nut (12) is provided with threads, the inner side of the locking nut is provided with a through hole, and the right side end face is provided with radially distributed grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322561261.8U CN220890479U (en) | 2023-09-21 | 2023-09-21 | Novel double-sealing stuffing box assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322561261.8U CN220890479U (en) | 2023-09-21 | 2023-09-21 | Novel double-sealing stuffing box assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220890479U true CN220890479U (en) | 2024-05-03 |
Family
ID=90841848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322561261.8U Active CN220890479U (en) | 2023-09-21 | 2023-09-21 | Novel double-sealing stuffing box assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220890479U (en) |
-
2023
- 2023-09-21 CN CN202322561261.8U patent/CN220890479U/en active Active
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