CN202381389U - Chemical engineering process pump - Google Patents

Chemical engineering process pump Download PDF

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Publication number
CN202381389U
CN202381389U CN2011203690123U CN201120369012U CN202381389U CN 202381389 U CN202381389 U CN 202381389U CN 2011203690123 U CN2011203690123 U CN 2011203690123U CN 201120369012 U CN201120369012 U CN 201120369012U CN 202381389 U CN202381389 U CN 202381389U
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China
Prior art keywords
pump
shroud
blades
flow
machine
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CN2011203690123U
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Chinese (zh)
Inventor
戚加友
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HANGZHOU XIAOSHAN MEITE LIGHTING INDUSTRY MACHINERY CO LTD
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HANGZHOU XIAOSHAN MEITE LIGHTING INDUSTRY MACHINERY CO LTD
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Abstract

The utility model relates to a process pump, in particular to a chemical engineering process pump which is applied to chemical pulping process delivery in light papermaking industry. Front auxiliary blades are uniformly arranged on a front shroud, twisted blades are uniformly distributed between the front shroud and a back shroud, back auxiliary blades are uniformly arranged on the back side of the back shroud, and a pressure balancing hole is arranged in a hub of the back shroud; an internal flow cold type single end face mechanical sealing mechanism is arranged inside a pump cover, a motor is fixedly connected with one end of a diaphragm coupler, the other end of the diaphragm coupler is mutually fixed with a pump shaft, the pump shaft is inserted in a bearing stand component, the bearing stand component is mutually fixed with the pump cover, and a trapezoid spiral volute chamber is arranged in the peripheral direction of a closed flow type impeller. The chemical engineering process pump is simple in structure and stable and reliable in operation, prolongs the service life of equipment, reduces the environment pollution, and has wide application range.

Description

Chemical flow-process pump
Technical field
The utility model patent relates to a kind of process pump, relates in particular to the chemical flow-process pump that a kind of chemical pulping flow process that is applied in the light industry paper industry is carried.
Background technique
Mainly adopt plain edition chemical flow-process pump and chemical industry passage pump at present in the existing technology; Their impeller mainly adopts closed type structure; And have only back back blades, preceding seal ring or increasing back sealing ring, but do not have preceding back blades, axial force is bigger; When conveying contains particle media, the pump housing then easy to wear or pump cover etc.; In addition, axle envelope is normal adopt outer adorn rotary machine envelope or in adorn rotary machine envelope, cooling and the developing result of sealing pair are poor, and elastic element or compensation mechanism rotate with the axis, and are prone to produce uneven, the axle envelope is unreliable, machine envelope working life is generally maximum has only 1 year.
Chinese patent CN200820042078.X; Disclose a kind of novel corrosion resistant chemical process pump, relate in particular to be used in the corrosion resistant chemical process pump in fields such as chemical industry, oil, pharmacy and pickling, comprise the pump housing, support, pump cover, transmission shaft, gland and impeller; The pump housing links together through pump cover and support; Transmission shaft is fixed on the support, and the impeller set that adopts the mold pressing of corrosion-resistant fluoroplastic high temperature sintering to form is contained on the transmission shaft, and links to each other with transmission shaft through reverse thread.This structure exist the axle envelope unreliable, carry when containing particle media shortcoming such as flow passage part easy to wear, problem such as practical effect is relatively poor relatively.
Summary of the invention
The utility model mainly is to solve the deficiency that exists in the existing technology; Provide a kind of simple in structure, and reduce the axial force and the radial force of pump, improve running stability and reliability; And make the flow passage part longer service life; Guarantee that axle envelope time between failures more than 2 years, reduces environmental pollution, be suitable for carrying the chemical flow-process pump of the medium that contains a certain amount of granular etc.
The above-mentioned technical problem of the utility model mainly is able to solve through following technical proposals:
A kind of chemical flow-process pump comprises the pump housing, is provided with pump shaft in the described pump housing; The rear end of the described pump housing is provided with pump cover; Be provided with flow-shutting type impeller, interior stream cold type single mechanical end face seal mechanism and motor coupling body in the described pump housing, the head of described pump shaft is provided with the flow-shutting type impeller, and described flow-shutting type impeller comprises front shroud, back shroud, preceding back blades, back back blades, twisted blade and weighing apparatus pressure hole; Evenly be provided with preceding back blades on the described front shroud; Be evenly equipped with twisted blade between described front shroud and back shroud, the back side of described back shroud evenly is provided with the back back blades, and the wheel hub of described back shroud is provided with weighing apparatus and presses the hole; Stream cold type single mechanical end face seal mechanism is located in the pump cover in described; Stream cold type single mechanical end face seal mechanism comprises pump cover in described, is provided with machine envelope stationary ring in the pump cover, is provided with in-flow cooling cavity between described machine envelope stationary ring and pump shaft cylindrical; Be provided with machine envelope rotating ring between described machine envelope stationary ring and flow-shutting type impeller; Be provided with sealing pair between described machine envelope stationary ring and machine envelope rotating ring, the rear end side of described pump cover is provided with machine end-blocking lid, and described machine end-blocking lid is located through stop pin with machine envelope stationary ring mutually; Be provided with little spring between the spring eye of the interior edge face of described machine end-blocking lid and machine envelope stationary ring; The side walls of described machine end-blocking lid is provided with water intake, and the upper portion side wall of described machine end-blocking lid is provided with water outlet, and described water intake, water outlet and in-flow cooling cavity are connected; Described motor coupling body comprises motor; One end of described motor and diaphragm coupling is fixedly connected; The other end and the pump shaft of described diaphragm coupling fix; Described pump shaft is plugged in the bearing bracket stand parts, and described bearing bracket stand parts and pump cover fix, and the circumferencial direction of described flow-shutting type impeller is provided with the trapezoid spiral volute chamber.
Working principle: motor drives pump through diaphragm coupling and under certain rotating speed, rotates; Under the centrifugal force and barometric pressure effect of flow-shutting type impeller; Medium sucks the smooth enclosed principal space runner that is made up of front shroud, each adjacent twisted blade and back shroud that flows in back from the axial suction port of the circle volute formula pump housing; And flow out from the outlet port of flow-shutting type impeller; And by front shroud, each adjacent before part medium in the preceding enclosed secondary channels formed of preceding inboard of back blades and the circle volute formula pump housing, the back enclosed secondary channels formed by the preceding inboard of back shroud, each adjacent back blades afterwards and pump cover; Then thrown to the trapezoid spiral volute chamber of the circle volute formula pump housing through the preceding back blades and the centrifugal action of back back blades respectively; The minimum part medium of not dished out by the preceding back blades then seam gap between the circle volute formula pump housing and flow-shutting type impeller is back to the import of flow-shutting type impeller; The minimum part medium of not dished out by the back back blades then presses the front and back differential pressure action in hole to be back to the import of flow-shutting type impeller through weighing apparatus; Thereby with the speed of flow-shutting type impeller outlet place medium can convert to round volute formula pump housing place pressure can, at last from the circle volute formula pump housing radially in the middle of exhaust port discharge, accomplish the pump action of medium.
The axial plane section of trapezoid spiral volute chamber is circular and isosceles trapezoid combined type shape, and the trapezoid spiral volute chamber on planimetric map then is a spirality, to reduce radial force, reduces the vibration of pump, improves the overcurrent performance of medium simultaneously; The pump shaft end is equipped with flow-shutting type impeller and spacer, and flow-shutting type impeller and pump shaft pass through key anti-rotation and transmitting torque, and carries out fastening and locking with lock washer and impeller nut; When containing medium such as granular when pumping, can set up preceding liner plate, not be worn with the guard circle volute formula pump housing in the preceding inboard of the circle volute formula pump housing; The front and back side clearance of flow-shutting type impeller can be adjusted through the quantity of increase and decrease spacer, and side produces leakage in case medium is in the front and back of flow-shutting type impeller, can reduce the volumetric loss of pump simultaneously, prolongs the working life of flow passage part; Stream cold type axle envelope parts in the dress improved axle envelope reliability in pump cover was provided with; Be set with water retaining ring on the rear end pump shaft of stream cold type axle envelope parts in the interior dress, influence the working life of bearing with waterproof entering bearing accumulator; Persevering position lubricating cup is installed in the side of bearing bracket stand parts, in order to keep the oil level of bearing accumulator; Carry out the direct connection transmission through the diaphragm coupling that has jack shaft between chemical-process pump assembly and the motor; The outside of diaphragm coupling is covered with the coupler protective casing of toroidal, to guarantee the safety that turns round; Principal space runner, preceding enclosed secondary channels and back enclosed secondary channels are combined as the flow-shutting type impeller; To reduce axial force; Increase operation stability; The front and back side that stops medium such as granular to get into the flow-shutting type impeller has simultaneously farthest reduced the wearing and tearing of medium to the circle volute formula pump housing, flow-shutting type impeller and pump cover; The wheel hub of back shroud is provided with 5~7 weighing apparatuses and presses holes, and they are distributed in respectively between the inlet side of each adjacent twisted blade, with the front and back side residual axial force of balance flow-shutting type impeller, reduces shaft seal cavity pressure, improves an axle envelope effect.
Come sealing medium and sealing water through the O RunddichtringO between the cylindrical of machine envelope stationary ring and the endoporus of pump cover, and machine envelope stationary ring does axial fine motion with the elastic force of many little springs all the time in pump cover, to keep sealing the face pressure of vice division chief; Have the in-flow cooling cavity of certain volume between the endoporus of machine envelope stationary ring and the cylindrical of pump shaft, secondary inboard in order to circulation sealing water and coolant seal; 6~10 little springs and anti-1 stop pin of migrating that the secondary face pressure of compensation sealing is used are housed on the machine envelope stationary ring by the sealing water end (W.E.); The end of each little spring directly is positioned on the interior edge face of machine end-blocking lid, and the end of stop pin then freely stretches in the pin-and-hole of machine end-blocking lid; The machine end-blocking covers and also is provided with outside framework oil seal and oil sealing baffle plate, is fixed on the pump cover with stud etc. through end face O RunddichtringO sealing back; The downside of machine end-blocking lid is provided with water intake; The upside of machine end-blocking lid is provided with water outlet; Flow to the inner chamber of machine envelope stationary ring in after low pressure seal water gets into from water intake; Discharge through water outlet again after through low pressure seal water, so constantly flow and cool off the inboard cooling of sealing pair, lubricated and flushing action; Therefore; Through the outside cooling and low pressure seal water inboard cooling to sealing pair of fed sheet of a media self to sealing pair; The cooling and the developing result of machine envelope have been improved widely; With the face pressure that seals on the stationary ring the static sliding type compensation sealing vice division chief that adopts many little springs opportunity, guarantee that axle envelope time between failures more than 2 years, has reduced environmental pollution.
As preferably; The anterointernal end clearance of the back blades and the pump housing is 0.7~1mm before described; End clearance between described pump cover and back back blades is 0.7~1mm; Described back shroud wheel hub is provided with 5~7 weighing apparatuses and presses the hole, and described weighing apparatus presses the hole to be distributed in respectively between the inlet side of each adjacent twisted blade, and described twisted blade has 5~7; Described machine end-blocking lid seals through outside framework oil seal with pump shaft mutually; Described outside framework oil seal is through the crimping of oil sealing baffle plate phase; Be provided with the O RunddichtringO between described machine envelope stationary ring and pump cover, described little spring is provided with 6~10, and the rearward end of described pump shaft is with water retaining ring.
As preferably; Form back enclosed secondary channels between the preceding inboard of described back shroud, each adjacent back back blades and pump cover; Enclosed secondary channels before forming between the preceding inboard of described front shroud, each adjacent preceding back blades and the pump housing forms principal space runner between described front shroud, each adjacent twisted blade and back shroud; Back blades is respectively two circular-arc blades with the back back blades before described, and described preceding back blades is respectively equipped with 10~12 with the back back blades.
As preferably, the sidewall of described bearing bracket stand parts is provided with permanent position lubricating cup, and described diaphragm coupling is with coupler protective casing outward, and described coupler protective casing and bearing bracket stand parts are fixedly connected through connecting flange.
As preferably, described flow-shutting type impeller and pump shaft fix through impeller nut, are provided with lock washer between described impeller nut and flow-shutting type impeller, are provided with spacer between described flow-shutting type impeller and machine envelope rotating ring.
As preferably, the described pump housing, bearing bracket stand parts support through base with motor mutually, and described machine end-blocking lid is fastened through stud with pump cover.
Therefore, the chemical flow-process pump of the utility model, simple in structure, it is reliable to operate steadily, and prolongs service life of equipment, reduces environmental pollution, and it is wide to be fit to scope.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the interior structural representation that flows cold type single mechanical end face seal mechanism in the utility model;
Fig. 3 is the structural representation of flow-shutting type impeller in the utility model;
Fig. 4 is that the A of Fig. 3 is to structural representation;
Fig. 5 is that the B of Fig. 3 is to structural representation.
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 and shown in Figure 5; A kind of chemical flow-process pump comprises the pump housing 1, is provided with pump shaft 2 in the described pump housing 1; The rear end of the described pump housing 1 is provided with pump cover 3; Be provided with flow-shutting type impeller, interior stream cold type single mechanical end face seal mechanism and motor coupling body in the described pump housing 1, the head of described pump shaft 2 is provided with the flow-shutting type impeller, and described flow-shutting type impeller comprises front shroud 4, back shroud 5, preceding back blades 6, back back blades 7, twisted blade 8 and weighing apparatus pressure hole 9; Back blades 6 before evenly being provided with on the described front shroud 4; 5 of described front shroud 4 and back shrouds are evenly equipped with twisted blade 8, and the back side of described back shroud 5 evenly is provided with back back blades 7, and the wheel hub of described back shroud 5 is provided with weighing apparatus and presses hole 9; Stream cold type single mechanical end face seal mechanism is located in the pump cover 3 in described; Stream cold type single mechanical end face seal mechanism comprises pump cover 3 in described; Be provided with machine envelope stationary ring 10 in the pump cover 3; Be provided with in-flow cooling cavity 11 between described machine envelope stationary ring 10 and pump shaft 2 cylindricals, be provided with machine envelope rotating ring 12 between described machine envelope stationary ring 10 and flow-shutting type impeller, described machine envelope stationary ring 10 and 12 of rotating rings of machine envelope are provided with sealing pair 13; The rear end side of described pump cover 3 is provided with machine end-blocking lid 14; Described machine end-blocking lid 14 is located through stop pin 15 with machine envelope stationary ring 10 mutually, is provided with little spring 16 between the spring eye of the interior edge face of described machine end-blocking lid 14 and machine envelope stationary ring 10, and the side walls of described machine end-blocking lid 14 is provided with water intake 17; The upper portion side wall of described machine end-blocking lid 14 is provided with water outlet 18, and described water intake 17, water outlet 18 and in-flow cooling cavity 11 are connected; Described motor coupling body comprises motor 19; Described motor 19 is fixedly connected with an end of diaphragm coupling 20; The other end of described diaphragm coupling 20 and pump shaft 2 fix; Described pump shaft 2 is plugged in the bearing bracket stand parts 21, and described bearing bracket stand parts 21 fix with pump cover 3, and the circumferencial direction of described flow-shutting type impeller is provided with trapezoid spiral volute chamber 22.Back blades 6 is 0.7~1mm with the anterointernal end clearance of the pump housing 1 before described; The end clearance that described pump cover 3 and back back blades are 7 is 0.7~1mm; The wheel hub of described back shroud 5 is provided with 5~7 weighing apparatuses and presses hole 9; Described weighing apparatus presses hole 9 to be distributed in respectively between the inlet side of each adjacent twisted blade 8, and described twisted blade 8 has 5~7; Described machine end-blocking lid 14 seals through outside framework oil seal 23 with pump shaft 2 mutually; Described outside framework oil seal 23 is through the 24 phase crimping of oil sealing baffle plate; Described machine envelope stationary ring 10 and 3 of pump covers are provided with O RunddichtringO 25; Described little spring 16 is provided with 6~10, and the rearward end of described pump shaft 2 is with water retaining ring 26, forms back enclosed secondary channels 27 between the preceding inboard of described back shroud 5, each adjacent back back blades 7 and pump cover 3; Described front shroud 4, each form between the preceding inboard of back blades 6 and the pump housing 1 before adjacent before enclosed secondary channels 28, described front shroud 4, each adjacent twisted blade 8 and 5 formation of back shroud principal space runner 29; Back blades 6 is respectively two circular-arc blades with back back blades 7 before described; Back blades 6 is respectively equipped with 10~12 with back back blades 7 before described; The sidewall of described bearing bracket stand parts 21 is provided with permanent position lubricating cup 30; The described diaphragm coupling 20 outer coupler protective casings 31 that are with, described coupler protective casing 31 is fixedly connected through connecting flange 32 with bearing bracket stand parts 21, and described flow-shutting type impeller and pump shaft 2 fix through impeller nut 33; Be provided with lock washer 34 between described impeller nut 33 and flow-shutting type impeller; 12 of rotating rings of described flow-shutting type impeller and machine envelope are provided with spacer 35, and the described pump housing, bearing bracket stand parts 21 and motor 19 support through base 36 mutually, and described machine end-blocking lid 14 and pump cover 3 are fastened through stud.

Claims (6)

1. chemical flow-process pump; It is characterized in that: comprise the pump housing (1); Be provided with pump shaft (2) in the described pump housing (1); The rear end of the described pump housing (1) is provided with pump cover (3); Be provided with flow-shutting type impeller, interior stream cold type single mechanical end face seal mechanism and motor coupling body in the described pump housing (1), the head of described pump shaft (2) is provided with the flow-shutting type impeller, and described flow-shutting type impeller comprises front shroud (4), back shroud (5), preceding back blades (6), back back blades (7), twisted blade (8) and weighing apparatus pressure hole (9); Evenly be provided with preceding back blades (6) on the described front shroud (4); Be evenly equipped with twisted blade (8) between described front shroud (4) and back shroud (5), the back side of described back shroud (5) evenly is provided with back back blades (7), and the wheel hub of described back shroud (5) is provided with weighing apparatus and presses hole (9); Stream cold type single mechanical end face seal mechanism is located in the pump cover (3) in described; Stream cold type single mechanical end face seal mechanism comprises pump cover (3) in described; Be provided with machine envelope stationary ring (10) in the pump cover (3); Be provided with in-flow cooling cavity (11) between described machine envelope stationary ring (10) and pump shaft (2) cylindrical; Be provided with machine envelope rotating ring (12) between described machine envelope stationary ring (10) and flow-shutting type impeller; Be provided with sealing pair (13) between described machine envelope stationary ring (10) and machine envelope rotating ring (12), the rear end side of described pump cover (3) is provided with machine end-blocking lid (14), and described machine end-blocking lid (14) is located through stop pin (15) with machine envelope stationary ring (10) mutually; Be provided with little spring (16) between the spring eye of the interior edge face of described machine end-blocking lid (14) and machine envelope stationary ring (10); The side walls of described machine end-blocking lid (14) is provided with water intake (17), and the upper portion side wall of described machine end-blocking lid (14) is provided with water outlet (18), and described water intake (17), water outlet (18) and in-flow cooling cavity (11) are connected; Described motor coupling body comprises motor (19); Described motor (19) is fixedly connected with an end of diaphragm coupling (20); The other end of described diaphragm coupling (20) and pump shaft (2) fix; Described pump shaft (2) is plugged in the bearing bracket stand parts (21), and described bearing bracket stand parts (21) fix with pump cover (3), and the circumferencial direction of described flow-shutting type impeller is provided with trapezoid spiral volute chamber (22).
2. chemical flow-process pump according to claim 1; It is characterized in that: back blades (6) is 0.7~1mm with the anterointernal end clearance of the pump housing (1) before described; End clearance between described pump cover (3) and back back blades (7) is 0.7~1mm; The wheel hub of described back shroud (5) is provided with 5~7 weighing apparatuses and presses hole (9), and described weighing apparatus presses hole (9) to be distributed in respectively between the inlet side of each adjacent twisted blade (8), and described twisted blade (8) has 5~7; Described machine end-blocking lid (14) seals through outside framework oil seal (23) with pump shaft (2) mutually; Described outside framework oil seal (23) is through oil sealing baffle plate (24) phase crimping; Be provided with O RunddichtringO (25) between described machine envelope stationary ring (10) and pump cover (3); Described little spring (16) is provided with 6~10, and the rearward end of described pump shaft (2) is with water retaining ring (26).
3. chemical flow-process pump according to claim 1 and 2; It is characterized in that: form back enclosed secondary channels (27) between the preceding inboard of described back shroud (5), each adjacent back back blades (7) and pump cover (3); Enclosed secondary channels (28) before forming between the preceding inboard of described front shroud (4), each adjacent preceding back blades (6) and the pump housing (1) forms principal space runner (29) between described front shroud (4), each adjacent twisted blade (8) and back shroud (5); Back blades (6) and back back blades (7) are respectively two circular-arc blades before described, and described preceding back blades (6) and back back blades (7) are respectively equipped with 10~12.
4. chemical flow-process pump according to claim 1 and 2; It is characterized in that: the sidewall of described bearing bracket stand parts (21) is provided with permanent position lubricating cup (30); Described diaphragm coupling (20) is outer to be with coupler protective casing (31), and described coupler protective casing (31) and bearing bracket stand parts (21) are fixedly connected through connecting flange (32).
5. chemical flow-process pump according to claim 1 and 2; It is characterized in that: described flow-shutting type impeller and pump shaft (2) fix through impeller nut (33); Be provided with lock washer (34) between described impeller nut (33) and flow-shutting type impeller, be provided with spacer (35) between described flow-shutting type impeller and machine envelope rotating ring (12).
6. chemical flow-process pump according to claim 1 and 2; It is characterized in that: the described pump housing (1), bearing bracket stand parts (21) and motor (19) support through base (36) mutually, and described machine end-blocking lid (14) is fastened through stud with pump cover (3).
CN2011203690123U 2011-09-30 2011-09-30 Chemical engineering process pump Active CN202381389U (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102889235A (en) * 2012-10-25 2013-01-23 杭州新安江工业泵有限公司 High-temperature resistance plastics centrifugal pump
CN103953549A (en) * 2014-04-04 2014-07-30 上海第一水泵厂有限公司 Centrifugal coal water slurry pump
CN103953578A (en) * 2014-04-04 2014-07-30 上海第一水泵厂有限公司 Impeller for coal water slurry pump
CN105275889A (en) * 2015-10-19 2016-01-27 季裕成 Support space radiator for fluorine plastic pump
CN105275864A (en) * 2015-10-19 2016-01-27 季裕成 Double-end-face sealing device of single-stage single-suction centrifugal pump
CN105298902A (en) * 2015-10-19 2016-02-03 季裕成 Single-end surface sealing and locking device of single-grade single suction centrifugal pump
CN109751248A (en) * 2018-12-12 2019-05-14 江苏大学镇江流体工程装备技术研究院 A kind of electronic water pump for automobile

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102889235A (en) * 2012-10-25 2013-01-23 杭州新安江工业泵有限公司 High-temperature resistance plastics centrifugal pump
CN102889235B (en) * 2012-10-25 2015-11-18 杭州新安江工业泵有限公司 A kind of high-temperature resistance plastice centrifugal pump
CN103953549A (en) * 2014-04-04 2014-07-30 上海第一水泵厂有限公司 Centrifugal coal water slurry pump
CN103953578A (en) * 2014-04-04 2014-07-30 上海第一水泵厂有限公司 Impeller for coal water slurry pump
CN105275889A (en) * 2015-10-19 2016-01-27 季裕成 Support space radiator for fluorine plastic pump
CN105275864A (en) * 2015-10-19 2016-01-27 季裕成 Double-end-face sealing device of single-stage single-suction centrifugal pump
CN105298902A (en) * 2015-10-19 2016-02-03 季裕成 Single-end surface sealing and locking device of single-grade single suction centrifugal pump
CN109751248A (en) * 2018-12-12 2019-05-14 江苏大学镇江流体工程装备技术研究院 A kind of electronic water pump for automobile
CN109751248B (en) * 2018-12-12 2021-02-19 江苏大学镇江流体工程装备技术研究院 Automobile electronic water pump

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