CN202266444U - Semi-opened type pulp pump - Google Patents
Semi-opened type pulp pump Download PDFInfo
- Publication number
- CN202266444U CN202266444U CN2011203731693U CN201120373169U CN202266444U CN 202266444 U CN202266444 U CN 202266444U CN 2011203731693 U CN2011203731693 U CN 2011203731693U CN 201120373169 U CN201120373169 U CN 201120373169U CN 202266444 U CN202266444 U CN 202266444U
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- pump
- pump housing
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- working blade
- knife
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Abstract
The utility model relates to a pulp pump, in particular to a semi-opened type pulp pump applied to the papermaking industry belonging to the light industry. The semi-opened type pulp pump comprises a rear cover plate, wherein the front end of the rear cover plate is provided with a working blade, the rear end of the rear cover plate is provided with an auxiliary blade, the working blade is sleeved at the head of a pump shaft, and the rear end part of a pump body is provided with a pump cover fixed together with the pump shaft through a shaft sealing part; a motor supporting mechanism comprises a bearing frame member, a diaphragm coupling and a motor, wherein the motor is connected with one end of the diaphragm coupling, the other end of the diaphragm coupling is fixedly connected with the pump shaft, the bearing frame member is fixed together with the pump cover, a corrosion inhibiting cutting board is arranged at the bottom of an axial suction port of the pump body, and the pump body is provided with a pump body outlet. The semi-opened type pulp pump is simple in structure, excellent in overflow performance and convenient to adjust and maintain, the service life of equipment is prolonged, and the operation stability and the reliability in shaft sealing are improved.
Description
Technical field
The utility model patent relates to a kind of pulp pump, relates in particular to a kind of semi-open type pulp pump that is applied to the light industry paper industry.
Background technique
Main two phase flow pulp pump, Characteristics of Centrifugal Pulp Pump and the channel-type of adopting do not have the obstruction pulp pump in the existing technology at present; Its pump housing radially middle discharge formula structure and trapezoidal volute chambers of adopting more; When conveying contained the slurry of a certain amount of impurity, the pump housing import of said pump was prone to existing groove even worn out, and pump housing volute chamber, impeller and the wearing and tearing of pump cover overcurrent place are very fast simultaneously; Flow passage part is shorter working life, and maintenance expenses is very high; When containing the slurry of light impurity like conveying; Then be prone to stop up the impeller inlet or the pump housing volute chamber of two phase flow pulp pump and Characteristics of Centrifugal Pulp Pump; Mistake fluidity to light impurity is relatively poor; Be not difficult for clogging impeller import or pump housing volute chamber though channel-type has the pulp pump of obstruction, the pump housing and impeller are heavy, and pump operation reliability and stationarity are relatively poor.
Chinese patent CN201020289692.3; Disclose a kind of nothing and stop up rotary pulp pump, the pump case, link press span and the suspension that are connected successively on comprising support and being arranged on support, pump shaft pass pump case, link press span and from suspension, pass; Establish the impeller that is in the pump case on the pump shaft; The front end of impeller is established the front fender that is connected on the pump case, establishes rear wing between impeller rear end and the link press span successively and is connected the pump cover on the pump shaft, and rear wing is connected on the pump cover; The liquid entering hole that the level of offering is offered on the pump case and with the vertically disposed liquid outlet of liquid entering hole, the connection set between pump case and support, link press span, the front fender can rotate pump case along the pump shaft line; Rear wing and pump cover are provided with the gap of adjustable size.Have shortcomings such as vibration is big, pump case easy to wear, practical effect is relatively poor.
Summary of the invention
The utility model mainly is to solve the deficiency that exists in the existing technology, provides a kind of simple in structure, and can improve the inlet flowability of pump; Improve cavitation-resistance and abrasion performance; Improve the overcurrent performance of pump, prolong the working life of flow passage part, reduce maintenance expenses; Reduce the axial force and the radial force of pump simultaneously, make pump operation more reliable with semi-open type pulp pump stably.
The above-mentioned technical problem of the utility model mainly is able to solve through following technical proposals:
A kind of semi-open type pulp pump comprises the pump housing, is plugged with pump shaft in the described pump housing; Be provided with half-opened impeller in the described pump housing, described pump shaft supports through the motor supporting mechanism mutually, and described half-opened impeller comprises back shroud; The front end of described back shroud is provided with working blade, and the rear end of described back shroud is provided with back blades, and described working blade is enclosed within the head of pump shaft; The rearward end of the described pump housing is provided with pump cover, and described pump cover fixes through axle envelope parts and pump shaft; Described motor supporting mechanism comprises bearing bracket stand parts, diaphragm coupling and motor; Described motor is connected with an end of diaphragm coupling; The other end and the pump shaft of described diaphragm coupling are fixedly connected; Described bearing bracket stand parts and pump cover fix, and the axial inlet bottom of the described pump housing is provided with resistance erosion knife plate, and the described pump housing is provided with pump housing outlet.
Working principle: motor drives pump through diaphragm coupling and under certain rotating speed, rotates; Under the centrifugal force and barometric pressure effect of half-opened impeller; Slurry sucks from the axial suction port of the circle volute formula pump housing; After the anti-cyclone of resistance erosion knife plate, anti-cavitation and abrasive acrion, flow into the ternary runner between each the adjacent working blade on the half-opened impeller smoothly simultaneously; And flow out from the outlet port of half-opened impeller; Part slurry between back shroud and the pump cover is then thrown to circle trapezoid spiral volute chamber through the centrifugal action of back blades, and the smaller portions slurry of not dished out by back blades then is back to the import of half-opened impeller through the front and back differential pressure action of weighing apparatus discharge orifice, thereby can convert the speed of half-opened impeller outlet port medium the pressure ability of round volute formula pump housing place to; Discharge from the tangential side exhaust port of the circle volute formula pump housing at last, accomplish the pump action of slurry.Owing to having adopted the round volute formula pump housing that is provided with resistance erosion knife plate and circle trapezoid spiral volute chamber and having had many circular arc back blades and the half-opened impeller of weighing apparatus discharge orifice; So, overcurrent function admirable, flow passage part long service life; Pump axial force and radial force are very little, make pump operation more steady.
Resistance erosion knife plate: its effect is the inlet eddy flow that reduces the circle volute formula pump housing; Improve cavitation-resistance; Prevent heavy seeds at circle volute formula pump housing suction port place because of the sedimentation abrasion inwall that circulates; Simultaneously can cut off light impurity, prevent that light impurity from twining the inlet side of working blade or the import of stopping up half-opened impeller, improves the overcurrent performance of half-opened impeller.
Circle trapezoid spiral volute chamber: the axial plane section of circle trapezoid spiral volute chamber is circular and isosceles trapezoid combined type shape; Round trapezoid spiral volute chamber on planimetric map then is a spirality; To reduce radial force; Reduce the vibration of pump, improve the conveyance capacity of impurity simultaneously, effectively reduce the degree of wear of impurity the circle volute formula pump housing.
When after apron plate or half-opened impeller use a period of time, a certain amount of wearing and tearing being arranged, can adjust or keep this gap, guarantee that pump continues normal use through the quantity of increase and decrease sealing gasket 7.
When pumping contains the slurry of light impurity, can on the overcurrent card of apron plate, offer the open groove in two roads symmetrically, its shape from-inner-to-outer is for extending out the type right-angled trapezium, in order to avoid light impurity is stuck between apron plate and half-opened impeller and influence is used; Another effect of apron plate is that the guard circle volute formula pump housing is difficult for as long as change the apron plate of heavy wear, being saved maintenance expenses by the impurity wearing and tearing.
End clearance between the back blades on pump cover and the half-opened impeller is 0.8～1.2mm, and this gap can be adjusted through the quantity of increase and decrease spacer; Axle envelope parts are housed on the pump cover, and axle envelope parts can be selected packing seal or double mechanical seal for use; Water retaining ring influences the working life of bearing with waterproof entering bearing accumulator; Carry out the direct connection transmission through the diaphragm coupling that has jack shaft between semi-open type pulp pump assembly and the motor; The outside of diaphragm coupling is covered with the coupler protective casing of toroidal, and coupler protective casing is fixed by bolts on the cylindrical of connecting flange, to improve structural strength, guarantees the safety that turns round; Then be assembled into complete machine between semi-open type pulp pump assembly and the motor through common-base.
As preferably, the circumferencial direction of described working blade is provided with round trapezoid spiral volute chamber, and the preceding inboard of the described pump housing is provided with apron plate; Described working blade has three; Described working blade is distributed on the front end of back shroud; Described back blades has 8～12, and described back blades evenly is located at the rear end of back shroud, forms the ternary runner between described working blade; The wheel hub of described back shroud is provided with three weighing apparatus discharge orifices, and described weighing apparatus discharge orifice is distributed in respectively between the inlet side of each adjacent working blade.
Wherein working blade is the ternary twisted blade, 3 pieces of quantity, and it is distributed on the front end of back shroud; Back blades is three sections circular-arc blades, 8～12 pieces of quantity, and it is distributed on the rear end of back shroud, to reduce axial force, increases operation stability, stops impurity to get into the rear side of half-opened impeller simultaneously, reduces the wearing and tearing of pump cover; Form the ternary runner of semi-open type by each adjacent working blade and back shroud, totally 3 of ternary runner quantity are to improve its overcurrent performance; The wheel hub of back shroud is provided with 3 weighing apparatus discharge orifices; And they are distributed in respectively between the inlet side of each adjacent working blade; With the front and back side residual axial force of balance half-opened impeller, reduce shaft seal cavity pressure, improve axle envelope effect; Because of the high low pressure backflow effect of weighing apparatus discharge orifice, avoided the long-pending slurry in cavity place between half-opened impeller and the pump cover simultaneously.
Suitable concentration be lower than 5% and the slurry that contains a certain amount of impurity carry.
As preferably; Working clearance between described apron plate and working blade is 0.5～0.8mm, and the periphery center of described round trapezoid spiral volute chamber is provided with the outer strong rib of volute chamber, and the height of the outer strong rib of described volute chamber is 5～8mm; The width of the outer strong rib of described volute chamber is 10～16mm; Form open groove between the described apron plate and the pump housing, described open groove is connected the groove depth 3～4mm of described open groove with circle trapezoid spiral volute chamber.
The outer strong rib of volute chamber: the outer strong rib of volute chamber extends to the exhaust port flange neck of the round volute formula pump housing, receives force intensity to improve it, and increases beautiful shape property.
As preferably; Described resistance erosion knife plate is the right-angled trapezium shape; The two ends, edge of front end, top and the rear end of described resistance erosion knife plate are respectively equipped with the edge of a knife; The angle of the two ends edge of a knife is 40 degree～50 degree, and the top rake β of the front end edge of a knife is 10 degree～20 degree, and the thickness of described resistance erosion knife plate is 8～12mm; The head of described back shroud and pump shaft fixes through impeller nut; The top edge of a knife and the minimum separable between impeller nut of described resistance erosion knife plate are 6～10mm; The rear end of described pump shaft is with water retaining ring, is provided with lock washer between described impeller nut and pump shaft.
As preferably, described working blade is the ternary twisted blade, and described back blades is circular-arc blade, and the end clearance between described back blades and pump cover is 0.8～1.2mm.
As preferably, be provided with sealing gasket between the described apron plate and the pump housing, be with spacer between described back shroud and pump shaft.
As preferably, described diaphragm coupling is with coupler protective casing outward, and described coupler protective casing is fixedly connected through connecting flange and bearing bracket stand parts, and the described pump housing, bearing bracket stand parts and motor are located on the base.
Therefore, the semi-open type pulp pump of the utility model, simple in structure, the overcurrent function admirable prolongs service life of equipment, increases operation stability and axle envelope reliability, adjustment and easy to maintenance.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 be among Fig. 1 A to structural representation;
Fig. 3 is the side direction structural representation of half-opened impeller in the utility model;
Fig. 4 is that the B of Fig. 3 is to structural representation;
Fig. 5 is the structural representation of resistance erosion knife plate in the utility model;
Fig. 6 is the side direction structural representation of Fig. 5.
Embodiment
Pass through embodiment below, and combine accompanying drawing, do further bright specifically the technological scheme of the utility model.
Embodiment 1: like Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 and shown in Figure 6, a kind of semi-open type pulp pump comprises the pump housing 1; Be plugged with pump shaft 2 in the described pump housing 1, be provided with half-opened impeller in the described pump housing 1, described pump shaft 2 supports through the motor supporting mechanism mutually; Described half-opened impeller comprises back shroud 3; The front end of described back shroud 3 is provided with working blade 4, and the rear end of described back shroud 3 is provided with back blades 5, and described working blade 4 is enclosed within the head of pump shaft 2; The rearward end of the described pump housing 1 is provided with pump cover 6, and described pump cover 6 fixes with pump shaft 2 through axle envelope parts 7; Described motor supporting mechanism comprises bearing bracket stand parts 8, diaphragm coupling 9 and motor 10; Described motor 10 is connected with an end of diaphragm coupling 9; The other end of described diaphragm coupling 9 and pump shaft 2 are fixedly connected; Described bearing bracket stand parts 8 fix with pump cover 6, and the axial inlet bottom of the described pump housing 1 is provided with resistance erosion knife plate 11, and the described pump housing 1 is provided with pump housing outlet 12; The circumferencial direction of described working blade 4 is provided with round trapezoid spiral volute chamber 13, and the preceding inboard of the described pump housing 1 is provided with apron plate 14; Described working blade 4 has three, and described working blade 4 is distributed on the front end of back shroud 3, and described back blades 5 has 8～12; Described back blades 5 evenly is located at the rear end of back shroud 3, and 4 of described working blades form ternary runner 15, and the wheel hub of described back shroud 3 is provided with three weighing apparatus discharge orifices 16; Described weighing apparatus discharge orifice 16 is distributed in respectively between the inlet side of each adjacent working blade 4, and the working clearance that described apron plate 14 and working blade are 4 is 0.5～0.8mm, and the periphery center of described round trapezoid spiral volute chamber 13 is provided with the outer strong rib 17 of volute chamber; The height of the outer strong rib 17 of described volute chamber is 5～8mm, and the width of the outer strong rib 17 of described volute chamber is 10～16mm, and 1 of the described apron plate 14 and the pump housing form open groove 18; Described open groove 18 is connected with circle trapezoid spiral volute chamber 13, the groove depth 3～4mm of described open groove 18, and described resistance erosion knife plate 11 is the right-angled trapezium shape; The two ends, edge of front end, top and the rear end of described resistance erosion knife plate 11 are respectively equipped with edge of a knife 19-1; 19-2,19-3, two ends edge of a knife 19-1; 19-2; The angle of 19-3 is 40 degree～50 degree, and the top rake β of front end edge of a knife 19-1 is 10 degree～20 degree, and the thickness of described resistance erosion knife plate 11 is 8～12mm; Described back shroud 3 fixes through impeller nut 20 with the head of pump shaft 2; The minimum separable that the top edge of a knife 19-1 of described resistance erosion knife plate 11 and impeller nut are 20 is 6～10mm, and the rear end of described pump shaft 2 is with water retaining ring 21, and 2 of described impeller nut 20 and pump shafts are provided with lock washer 22; Described working blade 4 is the ternary twisted blade; Described back blades 5 is circular-arc blade, and the end clearance that described back blades 5 and pump cover are 6 is 0.8～1.2mm, and 1 of the described apron plate 14 and the pump housing are provided with sealing gasket 23; 2 of described back shroud 3 and pump shafts are with spacer 24; The described diaphragm coupling 9 outer coupler protective casings 25 that are with, described coupler protective casing 25 is fixedly connected through connecting flange 26 and bearing bracket stand parts 8, and the described pump housing 1, bearing bracket stand parts 8 and motor 10 are located on the base 27.
Claims (7)
1. a semi-open type pulp pump is characterized in that: comprise the pump housing (1), be plugged with pump shaft (2) in the described pump housing (1); The described pump housing is provided with half-opened impeller in (1); Described pump shaft (2) supports through the motor supporting mechanism mutually, and described half-opened impeller comprises back shroud (3), and the front end of described back shroud (3) is provided with working blade (4); The rear end of described back shroud (3) is provided with back blades (5); Described working blade (4) is enclosed within the head of pump shaft (2), and the rearward end of the described pump housing (1) is provided with pump cover (6), and described pump cover (6) fixes through axle envelope parts (7) and pump shaft (2); Described motor supporting mechanism comprises bearing bracket stand parts (8), diaphragm coupling (9) and motor (10); Described motor (10) is connected with an end of diaphragm coupling (9); The other end of described diaphragm coupling (9) and pump shaft (2) are fixedly connected; Described bearing bracket stand parts (8) fix with pump cover (6), and the axial inlet bottom of the described pump housing (1) is provided with resistance erosion knife plate (11), and the described pump housing (1) is provided with pump housing outlet (12).
2. semi-open type pulp pump according to claim 1 is characterized in that: the circumferencial direction of described working blade (4) is provided with round trapezoid spiral volute chamber (13), and the preceding inboard of the described pump housing (1) is provided with apron plate (14); Described working blade (4) has three; Described working blade (4) is distributed on the front end of back shroud (3); Described back blades (5) has 8～12, and described back blades (5) evenly is located at the rear end of back shroud (3), forms ternary runner (15) between described working blade (4); The wheel hub of described back shroud (3) is provided with three weighing apparatus discharge orifices (16), and described weighing apparatus discharge orifice (16) is distributed in respectively between the inlet side of each adjacent working blade (4).
3. semi-open type pulp pump according to claim 2; It is characterized in that: the working clearance between described apron plate (14) and working blade (4) is 0.5～0.8mm; The periphery center of described round trapezoid spiral volute chamber (13) is provided with the outer strong rib (17) of volute chamber; The height of the outer strong rib (17) of described volute chamber is 5～8mm, and the width of the outer strong rib (17) of described volute chamber is 10～16mm, forms open groove (18) between the described apron plate (14) and the pump housing (1); Described open groove (18) is connected the groove depth 3～4mm of described open groove (18) with circle trapezoid spiral volute chamber (13).
4. according to claim 1 or 2 or 3 described semi-open type pulp pumps, it is characterized in that: described resistance erosion knife plate (11) is respectively equipped with the edge of a knife (19-1 for right-angled trapezium shape, the two ends, edge of front end, top and the rear end of described resistance erosion knife plate (11); 19-2,19-3), the two ends edge of a knife (19-1; 19-2; Angle 19-3) is 40 degree～50 degree, and the top rake β of the front end edge of a knife (19-1) is 10 degree～20 degree, and the thickness of described resistance erosion knife plate (11) is 8～12mm; Described back shroud (3) fixes through impeller nut (20) with the head of pump shaft (2); The top edge of a knife (19-1) of described resistance erosion knife plate (11) and the minimum separable between impeller nut (20) are 6～10mm; The rear end of described pump shaft (2) is with water retaining ring (21), is provided with lock washer (22) between described impeller nut (20) and pump shaft (2).
5. according to claim 1 or 2 or 3 described semi-open type pulp pumps; It is characterized in that: described working blade (4) is the ternary twisted blade; Described back blades (5) is circular-arc blade, and the end clearance between described back blades (5) and pump cover (6) is 0.8～1.2mm.
6. according to claim 1 or 2 or 3 described semi-open type pulp pumps, it is characterized in that: be provided with sealing gasket (23) between the described apron plate (14) and the pump housing (1), be with spacer (24) between described back shroud (3) and pump shaft (2).
7. according to claim 1 or 2 or 3 described semi-open type pulp pumps; It is characterized in that: the outer coupler protective casing (25) that is with of described diaphragm coupling (9); Described coupler protective casing (25) is fixedly connected through connecting flange (26) and bearing bracket stand parts (8), and the described pump housing (1), bearing bracket stand parts (8) and motor (10) are located on the base (27).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203731693U CN202266444U (en) | 2011-09-30 | 2011-09-30 | Semi-opened type pulp pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203731693U CN202266444U (en) | 2011-09-30 | 2011-09-30 | Semi-opened type pulp pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202266444U true CN202266444U (en) | 2012-06-06 |
Family
ID=46157242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203731693U Expired - Lifetime CN202266444U (en) | 2011-09-30 | 2011-09-30 | Semi-opened type pulp pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202266444U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103671216A (en) * | 2013-12-09 | 2014-03-26 | 无锡艾比德泵业有限公司 | Coupling assembly of centrifugal pump |
| CN104005962A (en) * | 2014-05-30 | 2014-08-27 | 江苏大学 | Single-flow channel centrifugal pump with blade in flow channel |
| CN104235053A (en) * | 2014-08-22 | 2014-12-24 | 中国北方发动机研究所 | High-efficiency and low-specific speed centrifugal water pump |
| CN105179305A (en) * | 2015-09-17 | 2015-12-23 | 宜兴市宙斯泵业有限公司 | Semi-open plastic impeller for lining plastic corrosion prevention pump |
| CN106762810A (en) * | 2016-12-30 | 2017-05-31 | 意万仕（中山）泳池设备有限公司 | Sea water pump |
| CN107429698A (en) * | 2015-04-15 | 2017-12-01 | 苏尔寿管理有限公司 | For centrifuging the impeller of head box supply pump |
| CN109196229A (en) * | 2017-04-10 | 2019-01-11 | 日本电产三协株式会社 | Pump installation |
| CN110242620A (en) * | 2019-05-16 | 2019-09-17 | 江苏大学 | A kind of racemization device suitable for Turo pump inducer |
| CN111963465A (en) * | 2020-08-27 | 2020-11-20 | 绍兴智新机电科技有限公司 | Two-stage axial flow non-circulation air-out low-noise fan |
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2011
- 2011-09-30 CN CN2011203731693U patent/CN202266444U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103671216A (en) * | 2013-12-09 | 2014-03-26 | 无锡艾比德泵业有限公司 | Coupling assembly of centrifugal pump |
| CN104005962A (en) * | 2014-05-30 | 2014-08-27 | 江苏大学 | Single-flow channel centrifugal pump with blade in flow channel |
| CN104005962B (en) * | 2014-05-30 | 2017-02-01 | 江苏大学 | Single-flow channel centrifugal pump with blade in flow channel |
| CN104235053A (en) * | 2014-08-22 | 2014-12-24 | 中国北方发动机研究所 | High-efficiency and low-specific speed centrifugal water pump |
| CN107429698A (en) * | 2015-04-15 | 2017-12-01 | 苏尔寿管理有限公司 | For centrifuging the impeller of head box supply pump |
| CN105179305A (en) * | 2015-09-17 | 2015-12-23 | 宜兴市宙斯泵业有限公司 | Semi-open plastic impeller for lining plastic corrosion prevention pump |
| CN106762810A (en) * | 2016-12-30 | 2017-05-31 | 意万仕（中山）泳池设备有限公司 | Sea water pump |
| CN109196229A (en) * | 2017-04-10 | 2019-01-11 | 日本电产三协株式会社 | Pump installation |
| US11268517B2 (en) | 2017-04-10 | 2022-03-08 | Nidec Sankyo Corporation | Pump and impeller with auxiliary blades on the underside of the impeller and a permanent magnet rotor |
| CN110242620A (en) * | 2019-05-16 | 2019-09-17 | 江苏大学 | A kind of racemization device suitable for Turo pump inducer |
| CN111963465A (en) * | 2020-08-27 | 2020-11-20 | 绍兴智新机电科技有限公司 | Two-stage axial flow non-circulation air-out low-noise fan |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120606 |
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| CX01 | Expiry of patent term |