CN103062050A - Packing seal device of rotor pump - Google Patents
Packing seal device of rotor pump Download PDFInfo
- Publication number
- CN103062050A CN103062050A CN2013100100503A CN201310010050A CN103062050A CN 103062050 A CN103062050 A CN 103062050A CN 2013100100503 A CN2013100100503 A CN 2013100100503A CN 201310010050 A CN201310010050 A CN 201310010050A CN 103062050 A CN103062050 A CN 103062050A
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- China
- Prior art keywords
- backflow
- pump housing
- ring
- hole
- axle sleeve
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- 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.)
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Abstract
The invention discloses a packing seal device of a rotor pump. The packing seal device of the rotor pump comprises a rotary shaft (2), a shaft sleeve (3), a seal seat (4), a pressing cover (5) as well as a plurality of packing rings (6) and a backflow baffle ring (7), wherein the shaft sleeve (3) is sleeved on the rotary shaft (2); the seal seat (4) is fixed on the end surface of the pump body (1); the backflow baffle ring (7) is sleeved out of the shaft sleeve (3); a clearance is reserved between the inner wall of the backflow baffle ring (7) and the outer wall of the shaft sleeve (3); the backflow baffle ring (7) is positioned between the first packaging ring (6) and the second packing ring (6) which are closest to the pump body (1); the backflow baffle ring (7) has at least one radial through hole (7.1); and the radial through hole (7) is communicated with the low-pressure area of cavity body of the pump body for containing two rotors through a backflow channel. The packing seal device of the rotor pump can increase the seal effect of the packing ring and can prolong the service life of the packing ring, and meanwhile also can enhance the cooling effect to the shaft sleeve.
Description
Technical field
The present invention relates to the rotor pump technical field, specifically is a kind of stuffing seal of rotor pump.
Background technique
Rotor pump is selected different seal form according to the medium that is transferred, and in general, dielectric viscosity is high, and what can solidify when temperature is low selects packing seal, other select mechanical seal.The stuffing seal of rotor pump is installed in the cavity position that the pump housing is stretched out in rotating shaft, and it comprises the rotating shaft that is located on the pump housing, be socketed in axle sleeve in the rotating shaft, be fixed on pump body end surface upper seal support, gland and polylith is socketed in insertion ring on the axle sleeve successively; Described gland is fixed on the sealing seat outer end and with in the cavity of polylith insertion ring axial compression between axle sleeve and sealing seat.More than the stuffing seal of this construction rotor pump have following shortcoming: because after the medium material feeding mouth of carrying flows into, through the low pressure area of the cavity of accommodating two rotors of the pump housing by after the effect of two rotors to the zone of high pressure, flow out from discharge port again, the medium of carrying still can flow into from the gap between the outer wall of pump housing axis hole wall and axle sleeve the insertion ring of sealing usefulness, although what insertion ring rose is seal action, but can't seal fully, still allow a small amount of medium to flow into, can play cooling action to axle sleeve so simultaneously.Because the medium carried from the zone of high pressure out, like this to the insertion ring of its seal action larger extruding force being arranged, long-term work affects sealing effect and the working life of insertion ring.Again because after medium enters the insertion ring position, in case after too much piling up, can't circulate, persistently overheating, just reduced the cooling effect of medium to axle sleeve.
Summary of the invention
The technical problem to be solved in the present invention is, is provided a kind of sealing effect and working life that can increase insertion ring, can also increase the stuffing seal to the rotor pump of the cooling effect of axle sleeve simultaneously.
Technological scheme of the present invention is, a kind of stuffing seal with rotor pump of following structure is provided, comprises the rotating shaft that is located on the pump housing, be socketed in axle sleeve in the rotating shaft, be fixed on sealing seat, gland and a plurality of insertion ring that is located at successively on the axle sleeve on the pump body end surface; Described gland is fixed on the sealing seat outer end and with in the cavity of a plurality of insertion ring axial compression between axle sleeve and sealing seat, it comprises that also is socketed in the outer backflow spacer ring of axle sleeve, be provided with the gap between the inwall of described backflow spacer ring and the outer wall of axle sleeve, described backflow spacer ring is between first insertion ring and the second insertion ring of the most close pump housing, described backflow spacer ring is provided with a radial direction through hole at least, and described radial direction through hole is communicated with by the return flow line with the low pressure area of the cavity of accommodating two rotors of the pump housing.
After adopting above structure, the present invention compared with prior art, have the following advantages: by between the first insertion ring of the most close pump housing and the second insertion ring, increasing a backflow spacer ring, and described backflow spacer ring is provided with a radial direction through hole at least, described radial direction through hole is communicated with by the return flow line with the low pressure area of the cavity of accommodating two rotors of the pump housing, the medium that flows through the conveying of first insertion ring can be flowed directly into to the low pressure area of the cavity of accommodating two rotors of the pump housing through radial direction through hole and the return flow line of backflow spacer ring more like this, realized recycling, reduce like this extruding force to the insertion ring of its seal action, can increase sealing effect and the working life of insertion ring.Owing to after medium enters the insertion ring position, no longer pile up, but again flow into low pressure area, increased flowability, thereby can increase medium to the cooling action of axle sleeve again, made good cooling results.
As improvement, described return flow line refers to, be provided with one or more than one return port between the low pressure area of the cavity of accommodating two rotors of described radial direction through hole and the pump housing, each return port part is positioned at the pump housing, another part is positioned on the sealing seat, by return port medium is carried, processing is simple like this, and it is convenient to carry.
As further improvement, quantity is that plural return port distributes along even circumferential, makes backflow effective, more even.
As further improvement, the inwall of the low pressure area of the cavity of accommodating two rotors of the described pump housing is provided with one or more of back flashes, and the outlet of each return port is positioned at the bottom of back flash, so conveniently processes return port at the pump housing.
As improvement, the inwall of described backflow spacer ring is provided with the first radial ringed groove, the outer wall of described backflow spacer ring is provided with the second radial ringed groove, the described first radial ringed groove and the second radial ringed groove all are communicated with radial direction through hole, can make like this medium of the inwall of backflow spacer ring enter into radial direction through hole from the first radial ringed groove easilier, and the medium of the outer wall of backflow spacer ring is more prone to enter into the return flow line.
Description of drawings
Accompanying drawing 1 is the cross-sectional view of the stuffing seal of rotor pump of the present invention.
Accompanying drawing 2 is the main TV structure schematic representation of the stuffing seal of rotor pump of the present invention.
As shown in the figure: 1, the pump housing, 1.1, back flash, 2, rotating shaft, 3, axle sleeve, 4, sealing seat, 5, gland, 6, insertion ring, 7, the backflow spacer ring, 7.1, radial direction through hole, the 7.2, first radial ringed groove, the 7.3, second radial ringed groove, 8, return port.
Embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments.
As shown in Figure 1 and Figure 2, the stuffing seal of rotor pump of the present invention comprises the rotating shaft 2 that is located on the pump housing 1, is socketed in axle sleeve 3 in the rotating shaft 2, is fixed on sealing seat 4, gland 5 and a plurality of insertion ring 6 that is socketed in successively on the axle sleeve 3 on the pump housing 1 end face; Axle sleeve 3 axial limitings are in rotating shaft 2, described gland 5 is fixed on sealing seat 4 outer ends and with in the cavity of a plurality of insertion ring 6 axial compression between axle sleeve 3 and sealing seat 4, it also comprises a backflow spacer ring 7 that is located at outside the axle sleeve 3, be provided with the gap between the outer wall of the inwall of described backflow spacer ring 7 and axle sleeve 3, can make medium be more prone to pass backflow spacer ring 7, described backflow spacer ring 7 is between first insertion ring 6 and the second insertion ring 6 of the most close pump housing 1, described backflow spacer ring 7 is provided with a radial direction through hole 7.1 at least, described radial direction through hole 7.1 is communicated with by the return flow line with the low pressure area of the cavity of accommodating two rotors of the pump housing, that is to say, the inner of radial direction through hole 7.1 is communicated with described gap, and the outer end is communicated with the return flow line.The cavity of accommodating two rotors of the pump housing is boundary along the center line connecting line of two rotors, is low pressure area near material feeding mouth one side, is the zone of high pressure near discharge port one side.
Described return flow line refers to, be provided with between the low pressure area of the cavity of described radial direction through hole 7.1 and accommodating two rotors of the pump housing that dotted line indicates among one or more than one return port 8(such as Fig. 1), each return port 8 part is positioned at the pump housing 1, another part is positioned on the sealing seat 4, that is to say that return port 8 is inclined hole, not parallel with the axis of rotating shaft 2.The quantity of return port 8 does not limit, and quantity is that plural return port 8 distributes along even circumferential.
The inwall of the low pressure area of the cavity of the described pump housing 1 accommodating two rotors is provided with one or more of back flashes 1.1, because return port 8 is inclined hole, be difficult in the plane boring, so process first a back flash 1.1, convenient so again boring, the outlet of each return port 8 is positioned at the bottom of back flash 1.1.
The inwall of described backflow spacer ring 7 is provided with the first radial ringed groove 7.2, and the outer wall of described backflow spacer ring 7 is provided with the second radial ringed groove 7.3, and the described first radial ringed groove 7.2 and the second radial ringed groove 7.3 all are communicated with radial direction through hole 7.1.The medium of the inwall of backflow spacer ring 7 can enter into radial direction through hole 7.1 from the first radial ringed groove 7.2 easilier, and the medium of the outer wall of backflow spacer ring 7 is more prone to enter into the return flow line.
The quantity of described radial direction through hole 7.1 is more than two, and distributes along even circumferential, and the quantity of radial direction through hole 7.1 does not limit certainly.
Rotor pump is provided with two rotating shafts, and corresponding stuffing seal also is two, and two structure is identical, is structure shown in the present.In when work, the fed sheet of a media that fed sheet of a media flows through behind the first insertion ring 6 of the most close pump housing 1 all enters in the return port 8 by backflow spacer ring 7, enters into the low pressure area of the cavity of the pump housing 1 accommodating two rotors again.
Claims (6)
1. the stuffing seal of a rotor pump comprises the rotating shaft (2) that is located on the pump housing (1), is socketed in axle sleeve (3) in the rotating shaft (2), is fixed on sealing seat (4), gland (5) and a plurality of insertion ring (6) that is socketed in successively on the axle sleeve (3) on the pump housing (1) end face; Described gland (5) is fixed on sealing seat (4) outer end and with in the cavity of a plurality of insertion rings (6) axial compression between axle sleeve (3) and sealing seat (4), it is characterized in that: it comprises that also is located at the outer backflow spacer ring (7) of axle sleeve (3), be provided with the gap between the outer wall of the inwall of described backflow spacer ring (7) and axle sleeve (3), described backflow spacer ring (7) is positioned between first insertion ring (6) and the second insertion ring (6) of the most close pump housing (1), described backflow spacer ring (7) is provided with a radial direction through hole (7.1) at least, and described radial direction through hole (7.1) is communicated with by the return flow line with the low pressure area of the cavity of accommodating two rotors of the pump housing.
2. the stuffing seal of rotor pump according to claim 1, it is characterized in that: described return flow line refers to, be provided with one or more than one return port (8) between the low pressure area of the cavity of described radial direction through hole (7.1) and accommodating two rotors of the pump housing, each return port (8) part is positioned at the pump housing (1), and another part is positioned on the sealing seat (4).
3. the stuffing seal of rotor pump according to claim 2, it is characterized in that: quantity is that plural return port (8) distributes along even circumferential.
4. the stuffing seal of rotor pump according to claim 2, it is characterized in that: the inwall of the low pressure area of the cavity of accommodating two rotors of the described pump housing (1) is provided with one or more of back flashes (1.1), and the outlet of each return port (8) is positioned at the bottom of back flash (1.1).
5. the stuffing seal of rotor pump according to claim 1, it is characterized in that: the inwall of described backflow spacer ring (7) is provided with the first radial ringed groove (7.2), the outer wall of described backflow spacer ring (7) is provided with the second radial ringed groove (7.3), and the described first radial ringed groove (7.2) and the second radial ringed groove (7.3) all are communicated with radial direction through hole (7.1).
6. the stuffing seal of rotor pump according to claim 5, it is characterized in that: the quantity of described radial direction through hole (7.1) is more than two, and distributes along even circumferential.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310010050.3A CN103062050B (en) | 2013-01-10 | 2013-01-10 | The stuffing seal of rotor pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310010050.3A CN103062050B (en) | 2013-01-10 | 2013-01-10 | The stuffing seal of rotor pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103062050A true CN103062050A (en) | 2013-04-24 |
| CN103062050B CN103062050B (en) | 2016-04-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310010050.3A Active CN103062050B (en) | 2013-01-10 | 2013-01-10 | The stuffing seal of rotor pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103062050B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112502967A (en) * | 2020-11-30 | 2021-03-16 | 强大泵业集团行唐泵业有限公司 | Mechanical sealing structure of high-pressure rotor pump |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4351058A (en) * | 1979-02-22 | 1982-09-21 | Rudolf Florian | Induction crucible furnace and method for its preparation |
| CN2197494Y (en) * | 1994-03-24 | 1995-05-17 | 赵春林 | Sealing device of centrifugal pump |
| EP0802281A1 (en) * | 1996-04-19 | 1997-10-22 | Voith Sulzer Papiermaschinen GmbH | Process and apparatus to keep laterally tight the dewatering zone of a twin-wire paper machine |
| CN2394204Y (en) * | 1999-09-29 | 2000-08-30 | 中国石油化工集团公司 | Piston metering pump |
| CN2787877Y (en) * | 2005-04-15 | 2006-06-14 | 大连工业泵厂 | Leakless polymer injection pump |
| CN201412318Y (en) * | 2009-06-12 | 2010-02-24 | 张健 | Plunger pump packing box leak-free return flow type sealing device |
| CN201747617U (en) * | 2010-07-28 | 2011-02-16 | 上海悦澜泵业制造有限公司 | Horizontal multi-stage pump |
| CN202991487U (en) * | 2013-01-10 | 2013-06-12 | 宁波得利时泵业有限公司 | Packing sealing device for rotor pump |
-
2013
- 2013-01-10 CN CN201310010050.3A patent/CN103062050B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4351058A (en) * | 1979-02-22 | 1982-09-21 | Rudolf Florian | Induction crucible furnace and method for its preparation |
| CN2197494Y (en) * | 1994-03-24 | 1995-05-17 | 赵春林 | Sealing device of centrifugal pump |
| EP0802281A1 (en) * | 1996-04-19 | 1997-10-22 | Voith Sulzer Papiermaschinen GmbH | Process and apparatus to keep laterally tight the dewatering zone of a twin-wire paper machine |
| CN2394204Y (en) * | 1999-09-29 | 2000-08-30 | 中国石油化工集团公司 | Piston metering pump |
| CN2787877Y (en) * | 2005-04-15 | 2006-06-14 | 大连工业泵厂 | Leakless polymer injection pump |
| CN201412318Y (en) * | 2009-06-12 | 2010-02-24 | 张健 | Plunger pump packing box leak-free return flow type sealing device |
| CN201747617U (en) * | 2010-07-28 | 2011-02-16 | 上海悦澜泵业制造有限公司 | Horizontal multi-stage pump |
| CN202991487U (en) * | 2013-01-10 | 2013-06-12 | 宁波得利时泵业有限公司 | Packing sealing device for rotor pump |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112502967A (en) * | 2020-11-30 | 2021-03-16 | 强大泵业集团行唐泵业有限公司 | Mechanical sealing structure of high-pressure rotor pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103062050B (en) | 2016-04-20 |
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