CN209671612U - A kind of double protection gas packing seal structures for reciprocating pump - Google Patents
A kind of double protection gas packing seal structures for reciprocating pump Download PDFInfo
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- CN209671612U CN209671612U CN201920281115.0U CN201920281115U CN209671612U CN 209671612 U CN209671612 U CN 209671612U CN 201920281115 U CN201920281115 U CN 201920281115U CN 209671612 U CN209671612 U CN 209671612U
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- medium gas
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Abstract
The utility model discloses a kind of double protection gas packing seal structures for reciprocating pump, including stuffing box, piston rod through-hole is offered at the top of stuffing box, the bottom of stuffing box is plugged with stuffing-box, the bottom of stuffing-box is provided with sealing bottom cover, the inner cavity top of piston rod through-hole is plugged with piston rod, piston rod axle sleeve is uniformly socketed on piston rod from top to bottom, cross medium stomata is symmetrically offered at left and right sides of the inner cavity upper end of stuffing-box, medium gas ventilation axle sleeve is communicated between two groups of cross medium stomatas, the side symmetrical connection that two groups of cross medium stomatas are located remotely from each other has medium gas sealing mechanism, cross nitrogen stomata is symmetrically offered at left and right sides of the inner cavity lower end of stuffing-box, nitrogen ventilation axle sleeve is communicated between two groups of cross nitrogen stomatas, the bottom of cross nitrogen stomata is communicated with nitrogen-sealed mechanism, the utility model structure Rationally, the air that the medium gas in reduction cylinder leaked and reduced outside enters cylinder for design, facilitates ensuring that the reliability of packing seal.
Description
Technical field
The utility model relates to vacuum pump technology fields, and in particular to a kind of double protection gas fillers for reciprocating pump
Sealing structure.
Background technique
Vertical piston vacuum pump is the renewal product of W type horizontal vacuum pump, is the capital equipment for obtaining black vacuum.By
In using full-sealing device, the completely isolated of crankcase and cylinder is realized；In addition piston ring has used self-lubricating material, it is just real
Advanced oil-free lubrication is showed.Due to without sewage discharge, so the type vacuum pump is especially suitable for the row such as chemical industry, medicine and food
In the technical process such as vacuum distillation, vacuum evaporation, vacuum drying, vacuum concentration, the vacuum impregnation of industry, have power consumption small,
Energy-saving effect is significant, and occupied area is small, and operating noise is low, and cylinder uses Forced water cooling, the advantages that good cooling results, so extensively
For industries such as food, pharmacy.
In the use process of vertical piston vacuum pump, with some abrasions when using, the medium gas in cylinder is easy
It leaks, while the air in external environment is also easy to proceed in cylinder, makes vertical piston vacuum pump piston rod dynamic sealing
The reliability of packing seal reduces, for this purpose, it is proposed that a kind of double protection gas packing seal structures for reciprocating pump.
Utility model content
The purpose of the utility model is to overcome the above-mentioned problems in the prior art, provide a kind of for reciprocating vacuum
Pump double protection gas packing seal structures, reduce cylinder in medium gas leak and reduce outside air enter cylinder, be convenient for
Ensure the reliability of packing seal.
To realize above-mentioned technical purpose and the technique effect, the utility model is achieved through the following technical solutions:
A kind of double protection gas packing seal structures for reciprocating pump, including stuffing box, the top of the stuffing box
Piston rod through-hole is offered at center, the bottom center of the stuffing box is plugged with stuffing-box, and protrudes at the top of stuffing-box
The inner cavity of piston rod through-hole, the bottom of the stuffing-box are provided with sealing bottom cover, and the bottom left and right sides of the sealing bottom cover is
Chimeric to be bolted with hexagon socket cap head screw, the stuffing-box passes through hexagon socket cap head screw and stuffing box and sealing bottom cover phase
Connection, the inner cavity top activity of the piston rod through-hole is plugged with piston rod, and the bottom of piston rod is through the bottom of sealing bottom cover
Portion is uniformly socketed with piston rod axle sleeve on the piston rod from top to bottom, and piston rod axle sleeve is located at the inner cavity of piston rod through-hole,
The bottom of the stuffing box is connected with attachment base, symmetrically offers cross medium gas at left and right sides of the inner cavity upper end of the stuffing-box
Hole, medium gas ventilation axle sleeve is communicated between cross medium stomata described in two groups, and the medium gas ventilation axle sleeve is socketed in piston
On bar, and medium gas ventilation axle sleeve is located between the two adjacent groups piston rod axle sleeve of upper end, and cross medium stomata described in two groups is mutual
Separate side symmetrical connection has medium gas sealing mechanism, and medium gas sealing mechanism is located at the inner cavity of stuffing box, the filler
Cross nitrogen stomata symmetrically is offered at left and right sides of the inner cavity lower end of letter, is communicated with nitrogen between cross nitrogen stomata described in two groups
Ventilation axle sleeve, the nitrogen ventilation axle sleeve are socketed on piston rod, and nitrogen ventilation axle sleeve is located at lower end two adjacent groups piston rod
Between axle sleeve, the side symmetrical connection that the bottom of cross nitrogen stomata is located remotely from each other described in two groups has nitrogen-sealed mechanism, and nitrogen
Gas sealing mechanism is located at the top of attachment base, the junction of the stuffing box and top piston rod sleeve, the sealing bottom cover and
The junction of stuffing-box and the junction of the sealing bottom cover and bottom piston rod sleeve are provided with gasket.
Preferably, above-mentioned for being used in double protection gas packing seal structures of reciprocating pump, the medium hermetic seal
Mechanism includes medium gas snorkel, and movable sleeve is connected to medium gas sealing tube nut, institute on the right side of the outer wall of the medium gas snorkel
Give an account of and be provided with medium gas flared type pipe sleeve on the left of the inner cavity of matter gas sealing tube nut, and the left side of medium gas flared type pipe sleeve with
Medium gas snorkel bolt, the inner cavity right side of the medium gas sealing tube nut are bolted with medium gas ventilation tubing string, are given an account of
Matter gas is ventilated the right side of tubing string and side bolt of the inner cavity close to piston rod through-hole of stuffing box, and medium gas ventilation tubing string
Right side is connected with cross medium stomata, is sealed convenient for being passed through medium gas to device.
Preferably, above-mentioned for being used in double protection gas packing seal structures of reciprocating pump, the nitrogen-sealed machine
Structure includes nitrogen snorkel, and movable sleeve is connected to nitrogen sealing tube nut, the nitrogen envelope on the right side of the outer wall of the nitrogen snorkel
Nitrogen flared type pipe sleeve, and the left side of nitrogen flared type pipe sleeve and nitrogen snorkel phase spiral shell are provided on the left of the inner cavity of mouth pipe nut
Connect, be bolted with nitrogen ventilation tubing string on the right side of the inner cavity of the nitrogen sealing tube nut, the right side of the nitrogen ventilation tubing string with fill out
Expect letter bolt, and the right side of nitrogen ventilation tubing string is connected with cross nitrogen stomata, it is close convenient for being passed through nitrogen progress to device
Envelope.
Preferably, above-mentioned for being used in double protection gas packing seal structures of reciprocating pump, the sealing bottom cover
The subsider matched with hexagon socket cap head screw symmetrically is offered at left and right sides of bottom, convenient for hexagon socket cap head screw
Storage storage, reduce attachment base and interference when extraneous other components are attached.
Preferably, above-mentioned for being used in double protection gas packing seal structures of reciprocating pump, the sealing bottom cover
Bottom centre goes out to offer the relief hole matched with piston rod, convenient for the activity of piston rod.
Compared with prior art, the beneficial effects of the utility model are as follows:
The structure design of the utility model is reasonable, on the one hand passes through medium gas sealing mechanism, cross medium stomata and medium gas
The cooperation of ventilation axle sleeve, in piston rod through-hole upper end using the enhancing sealing of medium gas, the medium gas reduced in cylinder leaks；It is another
Aspect uses nitrogen in piston rod through-hole lower end by nitrogen-sealed mechanism, the cooperation of cross nitrogen stomata and nitrogen ventilation axle sleeve
Gas enhancing sealing, the air for reducing outside enters cylinder, to facilitate ensuring that packing seal by increasing this duplicate protection gas
Reliability.
Certainly, any product for implementing the utility model does not necessarily require achieving all the advantages described above at the same time.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the utility model embodiment, make required for being described below to embodiment
Attached drawing is briefly described, it should be apparent that, the drawings in the following description are merely some embodiments of the present invention,
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings
Other attached drawings.
Fig. 1 is the using state structure diagram one of the utility model；
Fig. 2 is location A partial enlarged view in Fig. 1 of the utility model；
Fig. 3 is the using state structure diagram of the medium gas sealing mechanism of the utility model；
Fig. 4 is the using state structure diagram of the nitrogen-sealed mechanism of the utility model；
In attached drawing, parts list represented by the reference numerals are as follows:
1- stuffing box, 2- piston rod through-hole, 3- stuffing-box, 4- seal bottom cover, 5- hexagon socket cap head screw, 6- piston
Bar, 7- piston rod axle sleeve, 8- attachment base, 9- cross medium stomata, 10- medium gas ventilation axle sleeve, 11- medium gas sealing mechanism,
1101- medium gas snorkel, 1102- medium gas flared type pipe sleeve, 1103- medium gas sealing tube nut, the ventilation of 1104- medium gas
Tubing string, 12- cross nitrogen stomata, 13- nitrogen ventilation axle sleeve, 14- nitrogen-sealed mechanism, 1401- nitrogen snorkel, 1402- nitrogen
Gas flared type pipe sleeve, 1403- nitrogen sealing tube nut, 1404- nitrogen ventilation tubing string, 15- gasket.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
All other embodiment obtained, fall within the protection scope of the utility model.
It please refers to shown in Fig. 1-4, a kind of double protection gas packing seal structures for reciprocating pump, including stuffing box 1,
Piston rod through-hole 2 is offered at the top center of stuffing box 1, the bottom center of stuffing box 1 is plugged with stuffing-box 3, and filler
The inner cavity of piston rod through-hole 2 is protruded at the top of letter 3, and the bottom of stuffing-box 3 is provided with sealing bottom cover 4, and the bottom for sealing bottom cover 4 is left
Right two sides are chimeric to be bolted with hexagon socket cap head screw 5, and stuffing-box 3 passes through hexagon socket cap head screw 5 and stuffing box 1 and close
Back cover lid 4 is connected, and the inner cavity top activity of piston rod through-hole 2 is plugged with piston rod 6, and the bottom of piston rod 6 is through sealing
The bottom centre of the bottom of bottom cover 4, sealing bottom cover 4 goes out to offer the relief hole matched with piston rod 6, convenient for piston rod 6
Activity is uniformly socketed with piston rod axle sleeve 7 on piston rod 6 from top to bottom, and piston rod axle sleeve 7 is located at the interior of piston rod through-hole 2
Chamber, the bottom of stuffing box 1 are connected with attachment base 8, seal and symmetrically offer and interior hexagonal cylindrical head at left and right sides of the bottom of bottom cover 4
The subsider that screw 5 matches reduces attachment base 8 and the external world other zero convenient for the storage storage to hexagon socket cap head screw 5
Interference when component is attached, symmetrically offers cross medium stomata 9 at left and right sides of the inner cavity upper end of stuffing-box 3, and two group ten
Medium gas ventilation axle sleeve 10 is communicated between word medium stomata 9, medium gas ventilation axle sleeve 10 is socketed on piston rod 6, and medium
Gas ventilation axle sleeve 10 is located between upper end two adjacent groups piston rod axle sleeve 7, the side pair that two groups of cross medium stomatas 9 are located remotely from each other
Title is communicated with medium gas sealing mechanism 11, and medium gas sealing mechanism 11 is located at the inner cavity of stuffing box 1, medium gas sealing mechanism 11
Including medium gas snorkel 1101, movable sleeve is connected to medium gas sealing tube nut on the right side of the outer wall of medium gas snorkel 1101
1103, the inner cavity left side of medium gas sealing tube nut 1103 is provided with medium gas flared type pipe sleeve 1102, and medium gas flared type
The inner cavity right side of the left side of pipe sleeve 1102 and 1101 bolt of medium gas snorkel, medium gas sealing tube nut 1103 is bolted with Jie
Matter gas is ventilated tubing string 1104, medium gas ventilate tubing string 1104 right side and stuffing box 1 inner cavity close to the side of piston rod through-hole 2
Bolt, and medium gas ventilation tubing string 1104 right side be connected with cross medium stomata 9, convenient for device be passed through medium gas into
Row sealing, symmetrically offers cross nitrogen stomata 12 at left and right sides of the inner cavity lower end of stuffing-box 3, two groups of cross nitrogen stomatas 12 it
Between be communicated with nitrogen ventilation axle sleeve 13, nitrogen ventilation axle sleeve 13 be socketed on piston rod 6, and nitrogen ventilation axle sleeve 13 be located at lower end
Between two adjacent groups piston rod axle sleeve 7, the side symmetrical connection that the bottom of two groups of cross nitrogen stomatas 12 is located remotely from each other has nitrogen
Sealing mechanism 14, and nitrogen-sealed mechanism 14 is located at the top of attachment base 8, nitrogen-sealed mechanism 14 includes nitrogen snorkel
1401, the outer wall right side movable sleeve of nitrogen snorkel 1401 is connected to nitrogen sealing tube nut 1403, nitrogen sealing tube nut 1403
Inner cavity on the left of be provided with nitrogen flared type pipe sleeve 1402, and the left side of nitrogen flared type pipe sleeve 1402 and nitrogen snorkel 1401
Bolt, the inner cavity right side of nitrogen sealing tube nut 1403 are bolted with nitrogen ventilation tubing string 1404, nitrogen ventilation tubing string 1404
Right side and 3 bolt of stuffing-box, and the right side of nitrogen ventilation tubing string 1404 is connected with cross nitrogen stomata 12, convenient for device
It is passed through nitrogen to be sealed, the junction of stuffing box 1 and top piston rod sleeve 7, the junction for sealing bottom cover 4 and stuffing-box 3
Gasket 15 is provided with the junction of sealing bottom cover 4 and bottom piston rod sleeve 7.
One concrete application of the present embodiment are as follows: the structure design of the utility model is reasonable, by by piston rod axle sleeve 7, nitrogen
Gas ventilation axle sleeve 13 and medium gas ventilation axle sleeve 10 are all socketed and are mounted on piston rod 6, are co-mounted to piston rod with piston rod 6
In through-hole 2, bottom cover 4 will be sealed by hexagon socket cap head screw 5 and stuffing-box 3 is fixedly mounted on 1 bottom of stuffing box, by close
The junction of 15 reinforcing filler case 1 of packing and the junction of the piston rod axle sleeve 7 at top and sealing bottom cover 4 and stuffing-box 3 and
The leakproofness for sealing the junction of the piston rod axle sleeve 7 of bottom cover 4 and bottom, by the way that medium gas ventilation tubing string 1104 is spirally connected fixation
In the inner cavity of stuffing box 1, cross medium stomata 9 is made to be connected with medium gas ventilation tubing string 1104 and medium gas ventilation axle sleeve 10
It is logical, medium gas snorkel 1101 is connected with medium gas ventilation tubing string 1104 by medium gas sealing tube nut 1103, is passed through
The input terminal of medium gas snorkel 1101 is connected with extraneous medium gas aeration equipment, passes through medium gas flared type pipe sleeve 1102
Increase the contact area of medium gas snorkel 1101 and medium gas ventilation tubing string 1104, convenient for Jie in medium gas snorkel 1101
Matter gas is flowed into medium gas ventilation tubing string 1104, is fixed on stuffing-box 3, is made by the way that medium gas ventilation tubing string 1404 is spirally connected
Cross nitrogen stomata 12 is connected with medium gas ventilation tubing string 1404 and nitrogen ventilation axle sleeve 13, passes through nitrogen sealing tube nut
1403 are connected nitrogen snorkel 1401 with nitrogen ventilation tubing string 1404, by by the input terminal of nitrogen snorkel 1401 and outside
Boundary's nitrogen aeration equipment is connected, and increases nitrogen snorkel 1401 and nitrogen ventilation tubing string by nitrogen flared type pipe sleeve 1402
1404 contact area is flowed into nitrogen ventilation tubing string 1404, to pass through Jie convenient for the nitrogen in nitrogen snorkel 1401
The cooperation of matter gas sealing mechanism 11, cross medium stomata 9 and medium gas ventilation axle sleeve 10, in 2 upper end of piston rod through-hole using Jie
The enhancing sealing of matter gas, the medium gas reduced in cylinder leaks, logical by nitrogen-sealed mechanism 14, cross nitrogen stomata 12 and nitrogen
The cooperation of gas axle sleeve 13, in 2 lower end of piston rod through-hole using nitrogen enhancing sealing, the air for reducing outside enters cylinder, thus
By increasing this duplicate protection gas, the reliability of packing seal is facilitated ensuring that.
In the description of this specification, the description of reference term " one embodiment ", " example ", " specific example " etc. means
Particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least one of the utility model
In embodiment or example.In the present specification, schematic expression of the above terms be not necessarily referring to identical embodiment or
Example.Moreover, particular features, structures, materials, or characteristics described can be in any one or more embodiment or examples
In can be combined in any suitable manner.
The preferred embodiment in the utility model disclosed above is only intended to help to illustrate the utility model.Preferred embodiment is simultaneously
There is no the details that detailed descriptionthe is all, also not limiting the utility model is only the specific embodiment.Obviously, according to this theory
The content of bright book can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is in order to preferably
The principles of the present invention and practical application are explained, so that skilled artisan be enable to better understand and utilize this
Utility model.The utility model is limited only by the claims and their full scope and equivalents.
Claims (5)
1. a kind of double protection gas packing seal structures for reciprocating pump, including stuffing box (1), it is characterised in that: described
It is offered at the top center of stuffing box (1) piston rod through-hole (2), the bottom center of the stuffing box (1) is plugged with filler
Letter (3), and the inner cavity of piston rod through-hole (2) is protruded at the top of stuffing-box (3), the bottom of the stuffing-box (3) is provided with sealing
Bottom cover (4), the bottom left and right sides of sealing bottom cover (4) is chimeric to be bolted with hexagon socket cap head screw (5), the filler
Letter (3) is connected by hexagon socket cap head screw (5) with stuffing box (1) and sealing bottom cover (4), the piston rod through-hole (2)
Inner cavity top activity be plugged with piston rod (6), and the bottom of piston rod (6) through sealing bottom cover (4) bottom, the piston
It is uniformly socketed with from top to bottom on bar (6) piston rod axle sleeve (7), and piston rod axle sleeve (7) is located at the interior of piston rod through-hole (2)
The bottom of chamber, the stuffing box (1) is connected with attachment base (8), is symmetrically opened up at left and right sides of the inner cavity upper end of the stuffing-box (3)
There is cross medium stomata (9), medium gas ventilation axle sleeve (10) is communicated between cross medium stomata (9) described in two groups, is given an account of
Matter gas ventilation axle sleeve (10) is socketed on piston rod (6), and medium gas ventilation axle sleeve (10) is located at upper end two adjacent groups piston rod
Between axle sleeve (7), the side symmetrical connection that cross medium stomata (9) is located remotely from each other described in two groups has medium gas sealing mechanism
(11), and medium gas sealing mechanism (11) is located at the inner cavity of stuffing box (1), at left and right sides of the inner cavity lower end of the stuffing-box (3)
Cross nitrogen stomata (12) symmetrically is offered, nitrogen ventilation axle sleeve is communicated between cross nitrogen stomata (12) described in two groups
(13), nitrogen ventilation axle sleeve (13) is socketed on piston rod (6), and nitrogen ventilation axle sleeve (13) is located at lower end two adjacent groups
Between piston rod axle sleeve (7), the side symmetrical connection that the bottom of cross nitrogen stomata (12) is located remotely from each other described in two groups has nitrogen
Sealing mechanism (14), and nitrogen-sealed mechanism (14) is located at the top of attachment base (8), the stuffing box (1) and top piston bar
The junction of axle sleeve (7), the junction of sealing bottom cover (4) and stuffing-box (3) and the sealing bottom cover (4) and bottom piston
The junction of rod sleeve (7) is provided with gasket (15).
2. a kind of double protection gas packing seal structures for reciprocating pump according to claim 1, it is characterised in that:
The medium gas sealing mechanism (11) includes medium gas snorkel (1101), on the right side of the outer wall of the medium gas snorkel (1101)
Movable sleeve is connected to medium gas sealing tube nut (1103), is provided with Jie on the left of the inner cavity of the medium gas sealing tube nut (1103)
Matter gas flared type pipe sleeve (1102), and the left side of medium gas flared type pipe sleeve (1102) and medium gas snorkel (1101) phase spiral shell
It connects, medium gas ventilation tubing string (1104), the medium gas is bolted on the right side of the inner cavity of the medium gas sealing tube nut (1103)
Ventilate tubing string (1104) right side and stuffing box (1) inner cavity close to the side bolt of piston rod through-hole (2), and medium gas is logical
The right side of tracheae column (1104) is connected with cross medium stomata (9).
3. a kind of double protection gas packing seal structures for reciprocating pump according to claim 1, it is characterised in that:
The nitrogen-sealed mechanism (14) includes nitrogen snorkel (1401), movable sleeve on the right side of the outer wall of the nitrogen snorkel (1401)
It is connected to nitrogen sealing tube nut (1403), is provided with nitrogen flared type pipe on the left of the inner cavity of the nitrogen sealing tube nut (1403)
It covers (1402), and the left side of nitrogen flared type pipe sleeve (1402) and nitrogen snorkel (1401) bolt, the nitrogen sealing tube
Be bolted with nitrogen ventilation tubing string (1404) on the right side of the inner cavity of nut (1403), the right side of nitrogen ventilation tubing string (1404) with fill out
Expect letter (3) bolt, and the right side of nitrogen ventilation tubing string (1404) is connected with cross nitrogen stomata (12).
4. a kind of double protection gas packing seal structures for reciprocating pump according to claim 1, it is characterised in that:
The subsider matched with hexagon socket cap head screw (5) is symmetrically offered at left and right sides of the bottom of sealing bottom cover (4).
5. a kind of double protection gas packing seal structures for reciprocating pump according to claim 1, it is characterised in that:
The bottom centre of sealing bottom cover (4), which goes out, offers the relief hole matched with piston rod (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920281115.0U CN209671612U (en) | 2019-03-06 | 2019-03-06 | A kind of double protection gas packing seal structures for reciprocating pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920281115.0U CN209671612U (en) | 2019-03-06 | 2019-03-06 | A kind of double protection gas packing seal structures for reciprocating pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209671612U true CN209671612U (en) | 2019-11-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920281115.0U Active CN209671612U (en) | 2019-03-06 | 2019-03-06 | A kind of double protection gas packing seal structures for reciprocating pump |
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| Country | Link |
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| CN (1) | CN209671612U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110953350A (en) * | 2019-12-12 | 2020-04-03 | 石家庄赛澳泵业有限公司 | Novel mechanical sealing device |
| CN114215974A (en) * | 2021-12-24 | 2022-03-22 | 南京铖联激光科技有限公司 | 3D prints with protection gas device that has a warning function |
-
2019
- 2019-03-06 CN CN201920281115.0U patent/CN209671612U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110953350A (en) * | 2019-12-12 | 2020-04-03 | 石家庄赛澳泵业有限公司 | Novel mechanical sealing device |
| CN114215974A (en) * | 2021-12-24 | 2022-03-22 | 南京铖联激光科技有限公司 | 3D prints with protection gas device that has a warning function |
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