CN209704827U - A kind of first pump combination valve - Google Patents
A kind of first pump combination valve Download PDFInfo
- Publication number
- CN209704827U CN209704827U CN201920273604.1U CN201920273604U CN209704827U CN 209704827 U CN209704827 U CN 209704827U CN 201920273604 U CN201920273604 U CN 201920273604U CN 209704827 U CN209704827 U CN 209704827U
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- CN
- China
- Prior art keywords
- valve
- feed liquor
- drain
- deck
- valve body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses an a kind of first to pump combination valve, solves the problems, such as the swing occurred in first pump combination valve operational process into, drain valve plate or stuck, have the effect of reducing combination valve failure rate, be conducive to first pump long-period stable operation, its technical solution are as follows: including valve body, valve body one end is installed into liquid valve deck by feed liquor valve plate, and the feed liquor valve spring with axial pre tightening force is arranged between feed liquor valve plate and feed liquor valve deck；The valve body other end installs drain valve deck by drain valve plate, and drain valve deck and tapping valve intralamellar part are provided with the drain valve spring with axial pre tightening force；The feed liquor valve deck, drain valve deck pass through screw rod respectively and are connected with valve body, and clearance fit is swung between screw rod and feed liquor valve deck, drain valve deck with reducing；The valve inner is uniformly distributed multiple drain through-holes about central axis, keeps liquid inlet volume more uniform.
Description
Technical field
The utility model relates to urea plant fields, more particularly to an a kind of first to pump combination valve.
Background technique
One first pump is key equipment in urea production process, main function be middle pressure one is inhaled the first ammonium liquid of tower recycling from
1.7MPa is forced into 22MPa and is delivered to urea synthesizer, which decides that can a suction tower operate normally, Jin Er
Can entire carbamide production system is largely fixed normal table operation.
One first pump is mainly driven by a motor speed reducer rotation, then drives three cylinder plugs to move back and forth by crankshaft, link mechanism,
Each cylinder has combination valve, and combination valve is the core component of first pump, and combination valve, which breaks down, to be fallen to pump maintenance.
Inventors have found that in the process of running using first pump combination valve at present, swinging or blocking easily occur in combination valve plate
Extremely lead to seal failure, spool and spring breakage situation also happen occasionally, and in turn result in pump group and look fluctuation up and down.The maintenance of combination valve
Difficult point are as follows: first is that breakdown judge is stronger to maintenance experience dependence, it can not be accurately judged to very much which cylinder combination valve breaks down,
It is not swung or stuck second is that newly changing combination valve and being also unable to ensure combination valve plate；Therefore in the pump maintenance of an actual first, weight
Reinspection is repaired situation and is often occurred.
Utility model content
Based on the above present Research, the purpose of the utility model is to provide an a kind of first to pump combination valve, primarily directed to one
One kind first pump combination valve that the swing or stuck problem occurred in first pump combination valve operational process into, drain valve plate proposes.
The utility model adopts the following technical solutions:
A kind of first pump combination valve, including valve body, valve body one end pass through screw rod, the fixed feed liquor valve deck of nut and liquid feed valve
Plate is arranged with the feed liquor valve spring with axial pre tightening force between feed liquor valve plate and feed liquor valve deck；The valve body other end by screw rod,
The fixed drain valve deck of nut and drain valve plate, drain valve deck and tapping valve intralamellar part are provided with the tapping valve with axial pre tightening force
Spring；
Clearance fit is swung between the screw rod and feed liquor valve deck, drain valve deck with reducing；The valve inner is about in
Mandrel line is uniformly distributed multiple drain through-holes, improves valve body stress, avoids the appearance of local stress corrosion cracking, while circumference
Direction liquid inlet volume is more uniform.
The feed liquor valve deck of the utility model is equipped with feed liquor valve spring, and gives feed liquor valve spring along axial direction to valve body direction
Pretightning force, pretightning force are transferred to feed liquor valve plate by feed liquor valve spring, make feed liquor valve plate in conjunction with valve body；When pump housing imbibition, according to
Feed liquor valve plate is opened by pressure difference, enters medium in the pump housing；Drain valve deck is equipped with drain valve spring, and gives drain valve spring
Along axial direction to the pretightning force in valve body direction, pretightning force is transferred to drain valve plate by drain valve spring, makes drain valve plate and valve body
When in conjunction with, pump housing drain, drain valve plate is opened by pressure difference, high-pressure medium discharge.
Compared with prior art, the utility model has the beneficial effects that
(1) valve body feed liquor annular groove is changed to the inlet opening runner uniformly distributed along central axis by the utility model, improve valve body by
Power avoids the appearance of local stress corrosion cracking, while circumferencial direction liquid inlet volume is more uniform, be conducive to feed liquor valve plate and into
Liquid valve spring stress prevents liquid feed valve board and extremely causes medium back flow, improves the spring cycle of operation；
(2) the fit clearance value of the utility model feed liquor valve deck, drain valve deck and screw rod is controlled in lesser range, can
It largely reduces and swings, guarantee the positioning of feed liquor valve plate and drain valve rod, be also beneficial to prevent nut loosening, reduce combination valve
Failure rate is conducive to first pump long-period stable operation.
Detailed description of the invention
The Figure of description for constituting a part of the utility model is used to provide a further understanding of the present invention, this
The illustrative embodiments and their description of utility model do not constitute the improper limit to the utility model for explaining the utility model
It is fixed.
Fig. 1 is the structural schematic diagram of the utility model embodiment one；
Fig. 2 is the screw-rod structure schematic diagram of the utility model embodiment one；
Fig. 3 is the liquid feed valve cover structure schematic diagram of the utility model embodiment one；
Fig. 4 is the valve body structure schematic diagram of the utility model embodiment one；
Fig. 5 is the drain valve board structure schematic diagram of the utility model embodiment one；
Fig. 6 is the tapping valve cover structure schematic diagram of the utility model embodiment one；
Wherein, 1, screw rod, 2, nut, 3, feed liquor valve deck, 4, feed liquor valve spring, 5, feed liquor valve plate, 6, valve body, 7, tapping valve
Plate, 8, drain valve spring, 9, drain valve deck, 10, drain through-hole, 11, threaded hole, 12, shaft orientation liquid feeding hole, 13, radial inlet opening,
14, annular groove.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the utility model.It removes
Non- otherwise indicated, all technical and scientific terms used herein has the ordinary skill with the utility model technical field
The normally understood identical meanings of personnel.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the utility model.As used herein, unless the context clearly indicates otherwise, otherwise singular
Form be also intended to include plural form, additionally, it should be understood that, when in the present specification use term "comprising" and/or
When " comprising ", existing characteristics, step, operation, device, component and/or their combination are indicated.
As described in background technique, in the pump maintenance of an actual first, repeats maintenance situation and often occur, exist very
More maintenance are difficult, therefore combination valve easily occurs swinging or stuck problem urgently optimizes solution, difficult to reduce maintenance.
A kind of first pump combination valve provided by the utility model includes valve body, valve body one end by screw rod, nut it is fixed into
Liquid valve deck and feed liquor valve plate are arranged with the feed liquor valve spring with axial pre tightening force between feed liquor valve plate and feed liquor valve deck；Valve body
The other end is provided with by screw rod, the fixed drain valve deck of nut and drain valve plate, drain valve deck and tapping valve intralamellar part with axis
To the drain valve spring of pretightning force；The feed liquor valve deck, drain valve deck pass through screw rod respectively and are connected with valve body, and screw rod and feed liquor
Clearance fit is swung between valve deck, drain valve deck with reducing；The valve inner is uniformly distributed multiple drains about central axis
Through-hole keeps liquid inlet volume more uniform.
It is limited as further, feed liquor valve plate one end is set-located with feed liquor valve deck, the other end face and valve
Body end face fits closely.Drain valve plate one end is fitted closely with valve body end face, and the other end is set-located with drain valve deck.
The valve body both ends are respectively provided with the threaded hole of connecting screw, and threaded hole is arranged along the central axis of valve body.
Further to limit, the threaded hole does not penetrate through valve inner.
In addition, multiple nuts are installed in the screw rod end, feed liquor valve deck, tapping valve are covered tightly admittedly by nut.The spiral shell
Bar has the shaft shoulder for axially position.
Described valve body connected drainage valve plate one end opens up annular groove, and the annular groove is connected to form apocenosis passage with drain through-hole.
Described valve body connection feed liquor valve plate one end is along its multiple shaft orientation liquid feeding hole of circumferential direction setting, the shaft orientation liquid feeding hole and along valve body radial direction
The radial inlet opening of arrangement is connected to form feed pathway.Made on circumferencial direction by equally distributed apocenosis passage, feed pathway
Lifting rate, liquid inlet volume are more uniform.
It is limited as further, the fit clearance of the feed liquor valve deck, drain valve deck and screw rod is 0.03-0.08mm.
Embodiment one
The utility model is described in detail in 1-6 with reference to the accompanying drawing, specifically, structure is as follows:
In the present embodiment, first pump combination valve includes feed liquor valve deck 3, feed liquor valve plate 5, feed liquor valve spring 4, valve body 6, row
Liquid valve plate 7, drain valve deck 9,8, two screw rods 1 of drain valve spring and several nuts 2, wherein feed liquor valve deck 3, feed liquor valve plate 5,
Valve body 6, drain valve plate 7, drain valve deck 9 are sequentially connected.
Further, the both ends of the surface of valve body 6 are sealing surface, as shown in figure 4,6 both ends of valve body are along center axis thereof direction point
Threaded hole 11 is not offered, and two threaded holes 11 are not connected to inside valve body 6.
Several drain through-holes 10 are uniformly distributed in the circumferential direction of 6 central axis of valve body, drain through-hole 10 is from 6 one end of valve body along valve
Body 6 axially extends to the annular groove 14 opened up with the other end and is connected to form apocenosis passage.
The setting number and latus rectum of drain through-hole 10 are related with pressure and flow, can specifically be selected according to actual operation requirements
It selects.
Traditional drain annular groove is changed to the shape along the uniformly distributed drain through-hole 10 of central axis and annular groove cooperation by the present embodiment
Formula improves 6 stress of valve body, avoids the appearance of local stress corrosion cracking, while circumferencial direction lifting rate is more uniform, has
Conducive to 8 stress of drain valve plate 7 and drain valve spring.
Multiple shaft orientation liquid feeding holes 12 are arranged far from the circumferential direction of 11 side of threaded hole in the drain through-hole 10, and valve body 6 is radial to be opened
If multiple radial direction inlet openings 13, and shaft orientation liquid feeding hole 12 is connected to form feed pathway with radial inlet opening 13.
The number of feed pathway is related with the actual use occasion of combination valve, different numbers can be arranged according to different application requirements
Mesh.
Traditional feed liquor annular groove is changed to the feed pathway uniformly distributed along central axis by the present embodiment, improves 6 stress of valve body,
The appearance of local stress corrosion cracking is avoided, while circumferencial direction liquid inlet volume is more uniform, is conducive to feed liquor valve plate 5 and feed liquor
4 stress of valve spring, prevents that feed liquor valve plate 5 is stuck to cause medium back flow, improves 4 cycle of operation of feed liquor valve spring.
Valve body 6 opens up one end of drain through-hole 10 and one end of feed liquor valve plate 5 and is fitted closely by gasket, feed liquor valve plate
5 other end is connected with feed liquor valve deck 3, and the end sleeve of feed liquor valve deck 3 is set to inside feed liquor valve plate 5.
Feed liquor valve spring 4 is sheathed on 3 outer circumferential of feed liquor valve deck and between feed liquor valve deck 3 and feed liquor valve plate 5, relies on
Feed liquor valve deck 3 makes 4 stress of feed liquor valve spring push down feed liquor valve plate 5.
One of screw rod 1 sequentially passes through feed liquor valve deck 3, feed liquor valve plate 5 to 6 inside of valve body is connected with threaded hole 11, spiral shell
The part that bar 1 is located at 3 outside of feed liquor valve deck is installed by multiple nuts 2.
The fit clearance value of 3 end inner hole of feed liquor valve deck and 1 outer circle clearance fit of screw rod, the two is controlled in lesser model
It encloses, can largely reduce swing, guarantee the positioning of feed liquor valve plate 5, be also beneficial to prevent nut 2 from loosening.
In the present embodiment, the fit clearance 0.03-0.08mm of feed liquor valve deck 3 and screw rod 1.
One end that valve body 6 opens up annular groove 14 is fitted closely with 7 one end of drain valve plate by gasket, and drain valve plate 7 is another
End is connected with drain valve deck 9, and 7 end sleeve of drain valve plate is set to inside drain valve deck 9.
Drain valve spring 8 is set to drain valve plate 7, inside drain valve deck 9, by drain valve deck 9 make drain valve spring 8 by
Force drain valve plate 7.
Another screw rod 1 sequentially passes through drain valve deck 9, drain valve plate 7 to 6 inside of valve body is connected with threaded hole 11, screw rod 1
Part positioned at 9 outside of drain valve deck is installed by multiple nuts 2.
The fit clearance value of 9 end inner hole of drain valve deck and 1 outer circle clearance fit of screw rod, the two is controlled in lesser model
It encloses, can largely reduce swing, guarantee the positioning of drain valve plate 7, be also beneficial to prevent nut 2 from loosening.
In the present embodiment, the fit clearance 0.03-0.08mm of feed liquor valve deck 3 and screw rod 1.
It should be noted that in the present embodiment, screw rod 1 cooperates two nuts 2, feed liquor valve deck is killed using double nut fastening
3 (drain valve decks 9).
It should be understood that in other embodiments, the number of nut 2 can be one, three or three or more, specific root
It is selected according to actual needs.
The screw rod 1 has the shaft shoulder, axially position of the shaft shoulder for feed liquor valve deck 3, drain valve deck 9.
The working principle of the present embodiment combination valve are as follows:
6 one end of valve body and feed liquor valve deck 3 are assembled using screw rod 1 and the fastening of nut 2, and feed liquor valve deck 3 is circumferential to be equipped with liquid feed valve
Spring 4, and pretightning force of the feed liquor valve spring 4 along axial direction to 6 direction of valve body is given, pretightning force is transferred to by feed liquor valve spring 4
Feed liquor valve plate 5 makes 5 end part seal face of feed liquor valve plate in conjunction with 6 sealing surface of valve body.
When pump housing imbibition, pressure medium is high in the feed liquor runner of valve body 6, opens feed liquor valve plate 5 by pressure difference, medium into
Enter in the pump housing.
6 other end of valve body and drain valve deck 9 are assembled using screw rod 1 and the fastening of nut 2, and drain valve deck 9 is equipped with tapping valve bullet
Spring 8, and pretightning force of the drain valve spring 8 along axial direction to 6 direction of valve body is given, pretightning force passes through 8 row of being transferred to of drain valve spring
Liquid valve plate 7 makes 7 end part seal face of drain valve plate in conjunction with 6 sealing surface of valve body.
When pump housing drain, the pressure medium in valve body drain through-hole 10 is high, opens drain valve plate 7 by pressure difference, high pressure
Medium discharge.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (10)
1. an a kind of first pumps combination valve, which is characterized in that including valve body, valve body one end passes through screw rod, the fixed feed liquor valve deck of nut
With feed liquor valve plate, the feed liquor valve spring with axial pre tightening force is arranged between feed liquor valve plate and feed liquor valve deck；The valve body other end
It is provided with by screw rod, the fixed drain valve deck of nut and drain valve plate, drain valve deck and tapping valve intralamellar part with axial pretightening
The drain valve spring of power；
Clearance fit is swung between the screw rod and feed liquor valve deck, drain valve deck with reducing；The valve inner is about central axis
Line is uniformly distributed multiple drain through-holes.
2. an a kind of first according to claim 1 pumps combination valve, which is characterized in that feed liquor valve plate one end and liquid feed valve
Lid is set-located, and the other end face is fitted closely with valve body end face.
3. an a kind of first according to claim 1 pumps combination valve, which is characterized in that drain valve plate one end and valve body end
Face fits closely, and the other end is set-located with drain valve deck.
4. an a kind of first according to claim 1 pumps combination valve, which is characterized in that the valve body both ends are respectively provided with
The threaded hole of connecting screw, and threaded hole is arranged along the central axis of valve body.
5. an a kind of first according to claim 4 pumps combination valve, which is characterized in that the threaded hole does not penetrate through in valve body
Portion.
6. an a kind of first according to claim 1 pumps combination valve, which is characterized in that install multiple spiral shells in the screw rod end
Mother is covered tightly feed liquor valve deck, tapping valve admittedly by nut.
7. an a kind of first according to claim 1 pumps combination valve, which is characterized in that described valve body connected drainage valve plate one end
Annular groove is opened up, the annular groove is connected to form apocenosis passage with drain through-hole.
8. an a kind of first according to claim 1 pumps combination valve, which is characterized in that the valve body connects feed liquor valve plate one end
Multiple shaft orientation liquid feeding holes are circumferentially set along it, the shaft orientation liquid feeding hole to be formed with being connected to along the radial inlet opening that valve body is radially arranged
Feed pathway.
9. an a kind of first according to claim 1 pumps combination valve, which is characterized in that the feed liquor valve deck, drain valve deck with
The fit clearance of screw rod is 0.03-0.08mm.
10. an a kind of first according to claim 1 pumps combination valve, which is characterized in that the screw rod has for axial fixed
The shaft shoulder of position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920273604.1U CN209704827U (en) | 2019-03-04 | 2019-03-04 | A kind of first pump combination valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920273604.1U CN209704827U (en) | 2019-03-04 | 2019-03-04 | A kind of first pump combination valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209704827U true CN209704827U (en) | 2019-11-29 |
Family
ID=68643108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920273604.1U Expired - Fee Related CN209704827U (en) | 2019-03-04 | 2019-03-04 | A kind of first pump combination valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209704827U (en) |
-
2019
- 2019-03-04 CN CN201920273604.1U patent/CN209704827U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191129 |