CN109236724A - A kind of single-stage double-suction middle-opening pump with good seal performance - Google Patents
A kind of single-stage double-suction middle-opening pump with good seal performance Download PDFInfo
- Publication number
- CN109236724A CN109236724A CN201811389297.XA CN201811389297A CN109236724A CN 109236724 A CN109236724 A CN 109236724A CN 201811389297 A CN201811389297 A CN 201811389297A CN 109236724 A CN109236724 A CN 109236724A
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- China
- Prior art keywords
- pump
- impeller
- ring
- filler
- stage double
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/086—Sealings especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
- F04D29/4273—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps suction eyes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/586—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to middle-opening pump fields, specially a kind of single-stage double-suction middle-opening pump with good seal performance, it includes front bearing block, rear bearings seat and the pump shaft through them, axle sleeve is arranged on the pump shaft, impeller and the pump housing with impeller cooperation are socketed in the middle part of the pump shaft, and the pump housing is connect by fastener with front bearing block and rear bearings seat, seal member is provided between the pump housing and impeller, the two sides of the pump housing are provided with pump cover, are combined with stuffing seal and mechanically-sealing apparatus respectively at the pump cover of two sides；The object of the present invention is to provide a kind of, and the single-stage double-suction middle-opening with good seal performance pumps, by specific stuffing seal and impeller sealing component, good sealing effect is realized, while can reduce bearing span, prevent impeller ring from falling off, it is ensured that the normal operation of pump.
Description
Technical field
The present invention relates to middle-opening pump field, specially a kind of single-stage double-suction middle-opening pump with good seal performance.
Background technique
Middle-opening pump is a kind of a kind of Hydraulic Elements that low-pressure medium is changed into high-pressure medium, and therefore, it is necessary to good close
Feng Xing, and the sealing of the pump housing is the important component of middle-opening pump sealing.
Existing middle-opening pump common procurement S, SH type Split pump structure, since middle-opening pump hydraulic model is special, water flow is from leaf
Both sides intake impeller simultaneously is taken turns, so that suction chamber is wider, it is larger to result in bearing span, when bearing span is larger, pump operation
When impeller generate radial force can act on axis, formed a very big amount of deflection, bearing span is bigger, amount of deflection also get over
Greatly；Axis is easy to produce mechanical fatigue because after deflection deformation；Bearing as axis generate amount of deflection and in one it is improper
Stress, so bearing is easy fever, bearing life shortened, or even generates the serious product quality problems such as off-axis.
Meanwhile in traditional design, the positioning method of impeller ring is the mode of junction of the edges of two sheets of paper screw fastened, junction of the edges of two sheets of paper screw
Hole needs on the gap that impeller and impeller ring cooperate with making a hole, due to impeller and impeller ring material difference,
There is definitely operation difficulty in this drilling；After junction of the edges of two sheets of paper screw fastened, due to impeller ring two sides in pump operation
The effect of pressure difference and centrifugal force is easy to make junction of the edges of two sheets of paper toner screw, damages water pump so as to cause impeller ring abjection.
Summary of the invention
The object of the present invention is to provide a kind of, and the single-stage double-suction middle-opening with good seal performance pumps, and passes through specific filler
Sealing device and impeller sealing component realize good sealing effect, while can reduce bearing span, prevent impeller ring
It falls off, it is ensured that the normal operation of pump.
In order to achieve the goal above, the technical solution adopted by the present invention are as follows: a kind of single-stage with good seal performance is double
Middle-opening pump is inhaled, it includes front bearing block (2), rear bearings seat (11) and the pump shaft (10) through them, the pump shaft
(10) it is arranged on axle sleeve (21), impeller (43) and the pump housing with impeller (43) cooperation is socketed in the middle part of the pump shaft (10)
(3), and the pump housing (3) is connect by fastener (1) with front bearing block (2) and rear bearings seat (11), the pump housing (3) and
It is provided between impeller (43) seal member (7), the two sides of the pump housing (3) are provided with pump cover (22), the pump cover of two sides
(22) stuffing seal (4) and mechanically-sealing apparatus (9) are combined at respectively, the stuffing seal (4) includes axis
It is socketed with the filler interstage sleeve (23) docked with pump cover (22) on set (21), the filler interstage sleeve (23) is connected with engaged therewith
Gland (24), and seal chamber is formed between gland (24) and filler interstage sleeve (23), it is provided in the seal chamber
Flushing hole (2301) docking opened up on packing ring (30) and filler (31), the packing ring (30) and filler interstage sleeve (23),
The water flowing case (28) being connected to flushing hole (2301), and water flowing case (28) and punching are provided on the outside of the filler interstage sleeve (23)
Wash pipe (27) connection；The seal member (7) includes the impeller ring (42) being arranged on the outside of impeller (43), the impeller
Sealing ring (42) and impeller (43) pass through the lock-screw (44) being arranged radially and lock；The outside of the impeller ring (42)
It is provided with casing ring (41), the casing ring (41) is arranged on the pump housing (3).
Further, the stuffing seal (4) and mechanically-sealing apparatus (9) pass through seal gusset (12) and pump
(22) and impeller cooperation are covered, and the gap of seal gusset (12) and pump cover (22) is 1.5-3mm and the cooperation of impeller inlet side
Side is concordant with pump cover (22) seam allowance side.
Further, the gland (24) and filler interstage sleeve (23) pass through locking screw (25) and locking nut
(26) it connects, and is offered on filler interstage sleeve (23) and the threaded hole much with 3 with locking screw (25) cooperation.
Further, no less than 3 flushing holes (2301) are uniformly offered on the filler interstage sleeve (23).
Further, the filler (31) is graphite circle, and 3 graphite circles are provided on the outside of packing ring (30), interior
Side is provided with a graphite circle.
Further, it is inclined-plane that the gland (24), which penetrates the internal end face of filler interstage sleeve (23),；Described fills out
The medial surface for expecting interstage sleeve (23) close the pump housing (3) is inclined-plane.
Further, gasket (29) are provided between the position that the filler interstage sleeve (23) is contacted with the pump housing (3)；Institute
The filler interstage sleeve (23) stated is stainless steel material.
Further, the impeller ring (42) and impeller (43) are interference fit, the impeller ring
(42) and casing ring (41) is clearance fit.
Further, detection hole (4101) are in axial direction offered on the casing ring (41).
Further, the lock-screw (44) includes main body (4401), main body (4401) and impeller ring (42)
One layer of rubber layer (4402) is provided on the outside of the position of cooperation.
Further, limiting slot (4403), the limit are provided on the inside of the flange position of the lock-screw (44)
The stop collar (4301) being arranged on position slot (4403) and impeller (43) cooperates.
Further, it is provided on the outside of the flange of the lock-screw (44) and tightens block (4404).
The invention has the benefit that
1, the filler interstage sleeve of a tubular is set, and a water flowing case communicated therewith is set on the outside of filler interstage sleeve, is led to
It crosses water flowing case to connect with washing pipe, makes the position of seal chamber closer to impeller, reduce bearing span, ensure that scratching for axis
Degree is in a safely range.
2, impeller and impeller ring are locked by the clamping screw being arranged radially, pine will not occurs because of wheel rotation
It is dynamic, impeller ring can be effectively prevented and fallen off, ensure that water pump is safely and smoothly run, and assembled simple；It simultaneously can be with
It is not limited by the impeller of special substance.
3, make seal on the basis of the original increasing is widened at the gusset on seal, the gap with pump cover is in 1.5-
3mm, it is concordant when the side of cooperation is with pump cover seam allowance with impeller inlet, improve the anti-cavitation performance of single-stage double-suction middle-opening pump.
4, gland and filler interstage sleeve are fixed using locking screw and locking nut, it is easy to disassemble, and number
No less than three groups of amount, therefore can greatly improve the efficiency of locking.
5, filler uses graphite circle, and the distribution pattern of packing ring outside three guarantees that rinse water energy returns to water pump in time
Suction chamber, reduce leakage rate.
6, the design of gasket further improves the effect of sealing.
7, sealing effect, impeller ring and pump housing sealing can be improved using interference fit in impeller ring and impeller
Ring is gap-matched, and can reduce abrasion.
8, the design of detection hole can observe the gap between casing ring and impeller ring, and then realize more preferable
Be coupled effect.
9, the design of rubber layer can be such that impeller ring and clamping screw cooperates even closer, further prevent impeller
Sealing ring falls off.
10, the cooperation of stop collar and limiting slot further enhances the locking effect of lock-screw, prevents screw mobile,
And it will not influence the installation of screw.
11, the design for turning block greatly facilitates tightening for lock-screw, improves assembly efficiency.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of single-stage double-suction middle-opening pump with good seal performance.
Fig. 2 is the partial enlarged view of A in Fig. 1.
Fig. 3 is the structural schematic diagram of filler block.
Fig. 4 is the structural schematic diagram of seal member.
Fig. 5 is the partial enlarged view of B in Fig. 4.
Fig. 6 is the structural schematic diagram of clamping screw.
Label character as shown in the figure indicates are as follows: 1, fastener；2, front bearing block；3, the pump housing；4, stuffing seal；7,
Seal member；8, silk plug block；9, mechanically-sealing apparatus；10, pump shaft；11, rear bearings seat；12, seal gusset；21, axle sleeve；
22, pump cover；23, filler interstage sleeve；24, gland；25, locking screw；26, locking nut；27, flushing pipe；28, water flowing case；
29, gasket；30, packing ring；31, filler；2301, flushing hole；2302, threaded hole；41, casing ring；42, impeller seals
Ring；43, impeller；44, lock-screw；4101, detection hole；4301, stop collar；4401, bolt body；4402, rubber layer；
4403, limiting slot；4404, block is tightened.
Specific embodiment
In order to make those skilled in the art more fully understand technical solution of the present invention, with reference to the accompanying drawing to the present invention into
Row detailed description, the description of this part be only it is exemplary and explanatory, should not have any limitation to protection scope of the present invention
Effect.
As shown in figs 1 to 6, structure of the invention are as follows: a kind of single-stage double-suction middle-opening pump with good seal performance,
It includes front bearing block 2, rear bearings seat 11 and the pump shaft 10 through them, is arranged with axle sleeve 21 on the pump shaft 10,
The pump housing 3 that the middle part of the pump shaft 10 is socketed with impeller 43 and cooperates with impeller 43, and the pump housing 3 passes through fastener 1 and front
Bearing block 2 and rear bearings seat 11 connect, and seal member 7, the pump housing 3 are provided between the pump housing 3 and impeller 43
Two sides be provided with pump cover 22, stuffing seal 4 and mechanically-sealing apparatus 9 are combined at the pump cover 22 of two sides respectively, it is described
Stuffing seal 4 include being socketed with the filler interstage sleeve 23 dock with pump cover 22 on axle sleeve 21, the company of filler interstage sleeve 23
It is connected to gland 24 engaged therewith, and forms seal chamber between gland 24 and filler interstage sleeve 23, the seal chamber
It is inside provided with packing ring 30 and filler 31, the flushing hole 2301 opened up on the packing ring 30 and filler interstage sleeve 23 is docked, institute
The outside for the filler interstage sleeve 23 stated is provided with the water flowing case 28 being connected to flushing hole 2301, and water flowing case 28 and flushing pipe 27 connect
It is logical；The seal member 7 includes the impeller ring 42 being arranged on the outside of impeller 43, the impeller ring 42 and impeller 43
It is locked by the lock-screw 44 being arranged radially；The outside of the impeller ring 42 is provided with casing ring 41, described
Casing ring 41 be arranged on the pump housing 3.
Preferably, the stuffing seal 4 and mechanically-sealing apparatus 9 pass through seal gusset 12 and pump cover 22 and leaf
Wheel cooperation, and the gap of seal gusset 12 and pump cover 22 is 1.5-3mm, stops with the side of impeller inlet side cooperation and pump cover 22
Mouth side is concordant.
Preferably, the gland 24 and filler interstage sleeve 23 are connected by locking screw 25 and locking nut 26, and
The threaded hole for offering on filler interstage sleeve 23 and much cooperating with 3 with locking screw 5.
Preferably, no less than 3 flushing holes 2301 are uniformly offered on the filler interstage sleeve 23.
Preferably, the filler 31 is graphite circle, and the outside of packing ring 30 is provided with 3 graphite circles, inside setting
There is a graphite circle.
Preferably, it is inclined-plane that the gland 24, which penetrates the end face inside filler interstage sleeve 23,；The filler interstage sleeve
23 close to the pump housing 3 medial surface be inclined-plane.
Preferably, gasket 9 is provided between the position that the filler interstage sleeve 23 is contacted with the pump housing 3；The filler
Interstage sleeve 23 is stainless steel material.
Further, the impeller ring 42 and impeller 43 are interference fit, the impeller ring 42 and pump
Body sealing ring 41 is clearance fit.
Preferably, detection hole 4101 is in axial direction offered on the casing ring 41.
Preferably, the lock-screw 44 includes main body 4401, the position that main body 4401 and impeller ring 42 cooperate
Outside is provided with one layer of rubber layer 4402.
Preferably, limiting slot 4403, the limiting slot are provided on the inside of the flange position of the lock-screw 44
4403 cooperate with the stop collar 4301 being arranged on impeller 43.
Preferably, it is provided on the outside of the flange of the lock-screw 44 and tightens block 4404.
When specifically used, casing ring 41 has first been opened up into detection hole 4101, casing ring 41 is then loaded into pump
Body 3 later by 42 sets of impeller ring on impeller 43, and cooperates corresponding hole location, later loads onto lock-screw 44, and
It is fitted close rubber layer 4402 and impeller ring 42, is fitted close limiting slot 4403 and stop collar 4301, it then will dress
Impeller 43 and the pump housing 3 after good are assembled, and are assembled entire single-stage double-suction middle-opening according to Fig. 1 and are pumped, in the operation process of pump,
It is filled the water by washing pipe 7, then passes through water flowing case 8, entered in packing ring 10 from flushing hole 301, carry out cooling water washing, it is ensured that
The normal operation of packing ring 10, while can effectively reduce bearing span ensure that the amount of deflection of axis in a safely range；
And water flowing case 8 can also play good cooling effect, further prevent the excessively high damage filling-material structure of temperature；It can lead to simultaneously
The seal gusset 12 for crossing specific setting can play good anti-cavitation.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or equipment for including a series of elements not only includes those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or equipment institute it is intrinsic
Element.
Used herein a specific example illustrates the principle and implementation of the invention, the explanation of above example
It is merely used to help understand method and its core concept of the invention.The above is only a preferred embodiment of the present invention, it answers
When pointing out due to the finiteness of literal expression, and objectively there is unlimited specific structure, for the common skill of the art
For art personnel, without departing from the principle of the present invention, several improvement, retouching or variation can also be made, can also incited somebody to action
Above-mentioned technical characteristic is combined in the right way；These improve retouching, variation or combination, or the not improved structure by invention
Think and technical solution directly applies to other occasions, is regarded as protection scope of the present invention.
Claims (10)
1. it is a kind of with good seal performance single-stage double-suction middle-opening pump, which is characterized in that it include front bearing block (2), after
Portion's bearing block (11) and pump shaft (10) through them are arranged with axle sleeve (21), the pump shaft on the pump shaft (10)
(10) impeller (43) and the pump housing (3) with impeller (43) cooperation are socketed in the middle part of, and the pump housing (3) passes through fastener (1) with before
Portion's bearing block (2) and rear bearings seat (11) connection, are provided with seal member (7) between the pump housing (3) and impeller (43),
The two sides of the pump housing (3) are provided with pump cover (22), be combined with respectively at the pump cover (22) of two sides stuffing seal (4) and
Mechanically-sealing apparatus (9), the stuffing seal (4) include that the filler docked with pump cover (22) is socketed on axle sleeve (21)
Interstage sleeve (23), the filler interstage sleeve (23) is connected with gland engaged therewith (24), and gland (24) and filler
Seal chamber is formed between interstage sleeve (23), and packing ring (30) and filler (31), the packing ring are provided in the seal chamber
(30) and on filler interstage sleeve (23) flushing hole (2301) opened up is docked, and is provided with and is rushed on the outside of the filler interstage sleeve (23)
The water flowing case (28) of hole flushing (2301) connection, and water flowing case (28) is connected to flushing pipe (27)；The seal member (7) includes
The impeller ring (42) being arranged on the outside of impeller (43), the impeller ring (42) and impeller (43) are by being arranged radially
Lock-screw (44) locking；Casing ring (41) are provided on the outside of the impeller ring (42), the pump housing is close
Seal ring (41) is arranged on the pump housing (3).
2. a kind of single-stage double-suction middle-opening pump with good seal performance according to claim 1, which is characterized in that described
Stuffing seal (4) and mechanically-sealing apparatus (9) cooperated by seal gusset (12) and pump cover (22) and impeller, and it is close
The gap for sealing body gusset (12) and pump cover (22) is 1.5-3mm and impeller inlet in side and pump cover (22) seam allowance of cooperation
Concordantly.
3. a kind of single-stage double-suction middle-opening pump with good seal performance according to claim 1, which is characterized in that described
Filler (31) be graphite circle, and 3 graphite circles are provided on the outside of packing ring (30), inside is provided with a graphite circle.
4. a kind of single-stage double-suction middle-opening pump with good seal performance according to claim 3, which is characterized in that described
Gland (24) to penetrate the internal end face of filler interstage sleeve (23) be inclined-plane；The filler interstage sleeve (23) is close to the pump housing (3)
Medial surface be inclined-plane.
5. a kind of single-stage double-suction middle-opening pump with good seal performance according to claim 1, which is characterized in that described
The position that is contacted with the pump housing (3) of filler interstage sleeve (23) between be provided with gasket (29)；The filler interstage sleeve (23) is not
Become rusty Steel material.
6. a kind of single-stage double-suction middle-opening pump with good seal performance according to claim 1, which is characterized in that described
Impeller ring (42) and impeller (43) be interference fit, between the impeller ring (42) and casing ring (41) are
Gap cooperation.
7. a kind of single-stage double-suction middle-opening pump with good seal performance according to claim 6, which is characterized in that described
Casing ring (41) in axial direction offer detection hole (4101).
8. a kind of single-stage double-suction middle-opening pump with good seal performance according to claim 1, which is characterized in that described
Lock-screw (44) include main body (4401), be provided with one on the outside of the position of main body (4401) and impeller ring (42) cooperation
Layer rubber layer (4402).
9. a kind of single-stage double-suction middle-opening pump with good seal performance according to claim 8, which is characterized in that described
Lock-screw (44) flange position on the inside of be provided with limiting slot (4403), on the limiting slot (4403) and impeller (43)
The stop collar (4301) of setting cooperates.
10. a kind of single-stage double-suction middle-opening pump with good seal performance according to claim 9, which is characterized in that institute
It is provided on the outside of the flange for the lock-screw (44) stated and tightens block (4404).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811389297.XA CN109236724A (en) | 2018-11-20 | 2018-11-20 | A kind of single-stage double-suction middle-opening pump with good seal performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811389297.XA CN109236724A (en) | 2018-11-20 | 2018-11-20 | A kind of single-stage double-suction middle-opening pump with good seal performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109236724A true CN109236724A (en) | 2019-01-18 |
Family
ID=65076163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811389297.XA Pending CN109236724A (en) | 2018-11-20 | 2018-11-20 | A kind of single-stage double-suction middle-opening pump with good seal performance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109236724A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110332126A (en) * | 2019-08-14 | 2019-10-15 | 成都西南水泵厂 | A kind of double entry pump with flushing isolation ring |
-
2018
- 2018-11-20 CN CN201811389297.XA patent/CN109236724A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110332126A (en) * | 2019-08-14 | 2019-10-15 | 成都西南水泵厂 | A kind of double entry pump with flushing isolation ring |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190118 |