CN111365244A

CN111365244A - Vertical pipeline multistage pump

Info

Publication number: CN111365244A
Application number: CN202010180633.0A
Authority: CN
Inventors: 熊涛
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-16
Filing date: 2020-03-16
Publication date: 2020-07-03

Abstract

The invention relates to the technical field of pipeline pumps and discloses a vertical pipeline multistage pump which comprises a base, wherein a water inlet and a water outlet are formed in the base, the water inlet and the water outlet are in the same level and have the same diameter, and an inner sleeve is fixedly installed in the middle above the base. Through the setting of separator and bleed valve, make rivers get into from the water inlet and by the axle pressure boost after, strike separator and rise, increase the rivers export area on the one hand, increase the flow, make the rotational speed of improving the axle under the prerequisite that does not increase pressure, can improve the transportation volume of water, on the other hand, the gas that separates from the aquatic rises, the air vent of seting up on the separator gets into the centre formation long-pending gas of separator and connecting seat, keep apart water and mechanical seal device, effectively reduce revealing of rivers, and after accumulating to a certain degree, reach the pressure value that the bleed valve set for, can discharge from the bleed valve, guarantee the safety of pump body operation.

Description

Vertical pipeline multistage pump

Technical Field

The invention relates to the technical field of pipeline pumps, in particular to a vertical pipeline multistage pump.

Background

The pipeline pump is a kind of single-suction centrifugal pump, belong to the vertical structure, because its inlet and outlet are on the collinear, and the inlet and outlet calibers are the same, imitate a section of pipeline, can install in any position of the pipeline and so it is named as pipeline pump, also called booster pump, its structural feature is that it uses the structure of vertical sectional type plus stainless steel shell, make the inlet and outlet of the pump locate on the same horizontal line and the calibers are the same, can install in the pipeline like the valve, the pipeline pump is made up of many parts, according to the working state of each part when working, can roughly be divided into three types, rotating part, fixed part and connecting part, the pipeline pump should check and record the reading of its pump set ammeter, voltmeter, inlet and outlet vacuum meter, manometer and flowmeter, etc. at regular time when the power frequency or frequency conversion is normally running, but the pipeline pump has some deficiencies in the course of use, the following were used:

as shown in fig. 5, in the operation process of the pump, due to the high-speed rotation of the impeller 6, the water flow is pressurized and simultaneously stirred and centrifuged, so that the gas and the water in the water flow are partially separated, and because the density of the gas is smaller than that of the water, the accumulated gas in the pump body rises to the top of the outer sleeve 7 along with the water flow, when the gas is increased, the water outlet at the top of the inner sleeve 4 is blocked and collides with the water flow rotating at high speed, so that abnormal sound and vibration of the pipeline pump are caused, meanwhile, in the pressurizing process of the water flow, in order to prevent leakage, the mechanical sealing device 8 is used for sealing between the shaft 5 and the outside, but the high-pressure water flow continuously pressurizes the mechanical sealing device 8, and in the long-time application process, the mechanical sealing device 8 is easy to loosen, so that the pipeline pump leaks and pressurizes.

Disclosure of Invention

The invention provides a vertical pipeline multistage pump which has the advantages of good sealing performance and intelligent regulation and control and solves the problems in the background technology.

The invention provides the following technical scheme: a vertical pipeline multistage pump comprises a base, wherein a water inlet and a water outlet are formed in the base, the water inlet and the water outlet are in the same level and have the same channel diameter, an inner sleeve is fixedly arranged in the middle of the upper portion of the base, a shaft is sleeved in the middle of the base and located inside the inner sleeve in a movable mode, an outer sleeve is fixedly arranged above the base and located outside the inner sleeve, an impeller is fixedly sleeved on the shaft, a shaft coupler is fixedly connected to the top of the shaft, a motor shaft is fixedly sleeved in the shaft coupler and located right above the shaft, a connecting seat is fixedly arranged at the top of the outer sleeve, a mechanical sealing device is sleeved in the shaft and located inside the connecting seat in a movable mode, the mechanical sealing device is fixedly connected with the connecting seat, a connecting bolt is fixedly installed at the left portion of the connecting seat and the left portion of the base, a sliding shaft sleeve is fixedly sleeved on, the sliding shaft sleeve is movably sleeved with a separating device, an anti-collision spring is fixedly mounted on the upper surface of the separating device, an exhaust hole is formed in the connecting seat, a deflation valve is fixedly mounted on the right side of the connecting seat and communicated with an exhaust port, a movable groove is formed in the outer sleeve, and the separating device is movably clamped with the outer sleeve.

Preferably, the separating device comprises an isolating body, wherein the isolating body is provided with 6-12 air vents which are arranged in an array, the outer side of the isolating body is fixedly connected with a sliding ring, and the bottom of the isolating body is arc-shaped and is uniformly and fixedly provided with blades.

Preferably, the number of the blades is 6-12, and the rotation direction of the blades is the same as that of the impeller.

Preferably, four strip-shaped long blocks are uniformly and fixedly mounted on the outer side of the sliding shaft sleeve, and the separating device is movably clamped with the strip-shaped long blocks.

Preferably, the anticollision spring comprises ring and spring, the top of ring is made for rubber, and the bottom has the stainless steel to make, the spring has 6-8, spring evenly distributed is in the bottom of ring, and its top and the top fixed connection of ring, the bottom of spring and separator's upper surface fixed connection.

The invention has the following beneficial effects:

1. through the setting of separator and bleed valve, make rivers get into from the water inlet and by the axle pressure boost after, strike separator and rise, increase the rivers export area on the one hand, increase the flow, make the rotational speed of improving the axle under the prerequisite that does not increase pressure, can improve the transportation volume of water, on the other hand, the gas that separates from the aquatic rises, the air vent of seting up on the separator gets into the centre formation long-pending gas of separator and connecting seat, keep apart water and mechanical seal device, effectively reduce revealing of rivers, and after accumulating to a certain degree, reach the pressure value that the bleed valve set for, can discharge from the bleed valve, guarantee the safety of pump body operation.

2. Through separator's setting, keep apart high-pressure rivers and mechanical seal device, effectively avoid high-pressure rivers and mechanical seal device direct contact, reduce the impact of high-pressure rivers to mechanical seal device, strengthen the protection to mechanical seal device, increase the leakproofness of the pump body, improve the security of tubing pump operation, high-speed rotatory separator makes it turn to guaranteeing rivers under the circumstances of not losing rotatory kinetic energy simultaneously, and increase the kinetic energy of rivers, strengthen the pressure of rivers.

Drawings

FIG. 1 is a schematic front view of a half-section of the structure of the present invention;

FIG. 2 is a schematic view of the sliding sleeve structure of the present invention;

FIG. 3 is a schematic top view of a structural partitioning device of the present invention;

FIG. 4 is an enlarged view of the point A in FIG. 1;

fig. 5 is a schematic diagram of a conventional structure.

In the figure: 1. a base; 2. a water inlet; 3. a water outlet; 4. an inner sleeve; 5. a shaft; 6. an impeller; 7. a jacket; 8. a mechanical seal device; 9. a connecting seat; 10. a connecting bolt; 11. a coupling; 12. a motor shaft; 13. a sliding shaft sleeve; 14. a partitioning means; 141. an isolator; 142. a vent hole; 143. a glide ring; 144. a blade; 15. an anti-collision spring; 16. and (4) deflating the valve.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, a vertical pipe multistage pump comprises a base 1, a water inlet 2 and a water outlet 3 are arranged on the base 1, the water inlet 2 and the water outlet 3 are in the same level and have the same channel diameter, an inner sleeve 4 is fixedly arranged at the middle part above the base 1, a shaft 5 is movably sleeved at the middle part of the base 1 and is positioned inside the inner sleeve 4, an outer sleeve 7 is fixedly arranged above the base 1 and is positioned outside the inner sleeve 4, an impeller 6 is fixedly sleeved on the shaft 5, a shaft coupler 11 is fixedly connected to the top of the shaft 5, a motor shaft 12 is fixedly sleeved in the shaft coupler 11 and is positioned right above the shaft 5, a connecting seat 9 is fixedly arranged at the top of the outer sleeve 7, a mechanical sealing device 8 is movably sleeved on the shaft 5 and is positioned inside the connecting seat 9, the mechanical sealing device 8 is fixedly connected with the connecting seat 9, a connecting bolt 10 is fixedly arranged at the left, a sliding shaft sleeve 13 is fixedly sleeved on the shaft 5 and positioned right above the impeller 6, a separating device 14 is movably sleeved on the sliding shaft sleeve 13, an anti-collision spring 15 is fixedly installed on the upper surface of the separating device 14, an exhaust hole is formed in the connecting seat 9, a release valve 16 is fixedly installed on the right side of the connecting seat 9, the release valve 16 is communicated with the exhaust hole, a movable groove is formed in the outer sleeve 7, and the separating device 14 is movably clamped with the outer sleeve 7.

Wherein, the separating device 14 comprises an isolating body 141, the isolating body 141 is provided with vent holes 142 arranged in an array, 6-12 vent holes 142 are provided, the outer side of the isolating body 141 is fixedly connected with a sliding ring 143, the bottom of the isolating body 141 is arc-shaped and is uniformly and fixedly provided with blades 144, when water flow rotating at high pressure and high speed impacts on the separating device 14, the water flow is guided by the separating device 14 and is guided between the outer sleeve 7 and the inner sleeve 4 and then flows away from the water outlet 3, the separating device 14 rotates along with the shaft 5, the blades 144 thereon guide the rotating water flow and further quickly flow away, meanwhile, gas at the separation part can enter the middle parts of the separating device 14 and the connecting seat 9 from the vent holes 142 to form accumulated gas, on one hand, the influence of the gas on the high-pressure water flow is reduced, on the other hand, the mechanical sealing device 8 can be isolated, reducing the impact on the mechanical seal device 8.

Wherein, there are 6-12 blades 144, the direction of rotation of the blade 144 is the same as the direction of rotation of the impeller 6, it can not only ensure the water flow to turn rapidly without losing the kinetic energy of rotation, but also increase the kinetic energy of the water flow again, and at the same time, reduce the water entering the upper part of the separation device 14.

Wherein, the even fixed mounting in the outside of sliding shaft sleeve 13 has four bar long pieces, and separator 14 and the activity joint of bar long piece, and closely laminate for sliding shaft sleeve 13 and driving separator 14 and can rotating together, simultaneously, can make separator 14 when the up-and-down motion, increase separator 14's fastness, prevent that it from taking place to deflect, cause the emergence of accident.

Wherein, anticollision spring 15 comprises ring and spring, the top of ring is made for rubber, the bottom has the stainless steel to make, the spring has 6-8, spring evenly distributed is in the bottom of ring, and the top of its top and the top fixed connection of ring, the bottom of spring and separator 14's last fixed surface are connected, when high-pressure rivers form the impact to separator 14, make to have certain space between separator 14 and the connecting seat 9, provide effectual existence space for gaseous entering, reduce instantaneous impact simultaneously, prevent to lead to the fact destruction to connecting seat 9, increase the security of device.

The working principle is that the shaft 5 is driven to rotate by the motor shaft 12, then the impeller 6 is driven to rotate at a high speed, water flow enters the inner sleeve 4 from the water inlet 2, is sequentially transmitted upwards through the impeller 6 rotating at the high speed, forms high-pressure and high-speed rotating water flow after reaching the top of the last impeller 6, pushes the separating device 14 upwards, then enters the middle of the inner sleeve 4 and the outer sleeve 7 under the action of the separating device 14, falls into the water outlet 3 under the action of gravity and pressure, and is discharged, meanwhile, when the water flow passes through the stirring and centrifuging action of the shaft 5, gas in the water flow is partially separated, and the gas enters the middle of the separating device 14 and the connecting seat 9 from a ventilating space formed in the separating device 14 to form accumulated gas, and reaches certain pressure after being accumulated to a certain degree, and is released by the gas release valve 16.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a vertical pipeline multistage pump, includes base (1), water inlet (2) and delivery port (3) have been seted up on base (1), water inlet (2) and delivery port (3) are in same level and the passageway diameter is the same, the middle part fixed mounting of base (1) top has endotheca (4), axle (5) have been cup jointed in the middle part of base (1) and the inside activity that is located endotheca (4), the outside fixed mounting that just is located endotheca (4) of top of base (1) has overcoat (7), fixed cover has been cup jointed impeller (6) on axle (5), the top fixedly connected with shaft coupling (11) of axle (5), fixed cover has been cup jointed motor shaft (12), its characterized in that directly over and being located axle (5) in shaft coupling (11): the top fixed mounting of overcoat (7) has connecting seat (9), mechanical seal device (8) have been cup jointed in the inside activity that just is located connecting seat (9) on axle (5), mechanical seal device (8) and connecting seat (9) fixed connection, the left part of connecting seat (9) and the left part fixed mounting of base (1) have connecting bolt (10), it has slided axle sleeve (13) to fix the cover directly over and be located impeller (6) on axle (5), separating device (14) have been cup jointed in the activity on slideing axle sleeve (13), the last fixed surface of separating device (14) installs anticollision spring (15), the exhaust hole has been seted up to the inside of connecting seat (9), the right side fixed mounting of connecting seat (9) has bleed valve (16), bleed valve (16) are linked together with the gas vent, the activity groove has been seted up on the inside of overcoat (7), the separating device (14) is movably clamped with the outer sleeve (7).

2. The vertical tube multistage pump according to claim 1, wherein: the separating device (14) comprises separating bodies (141), vent holes (142) arranged in an array are formed in the separating bodies (141), the number of the vent holes (142) is 6-12, sliding rings (143) are fixedly connected to the outer sides of the separating bodies (141), and blades (144) are uniformly and fixedly mounted on the bottom of the separating bodies (141) in a circular arc shape.

3. The vertical tube multistage pump according to claim 2, wherein: the number of the blades (144) is 6-12, and the rotation direction of the blades (144) is the same as that of the impeller (6).

4. The vertical tube multistage pump according to claim 1, wherein: four strip-shaped long blocks are uniformly and fixedly mounted on the outer side of the sliding shaft sleeve (13), and the separating device (14) is movably clamped with the strip-shaped long blocks.

5. The vertical tube multistage pump according to claim 1, wherein: anticollision spring (15) comprise ring and spring, the top of ring is made for rubber, and the bottom has the stainless steel to make, the spring has 6-8, spring evenly distributed is in the bottom of ring, and the top of its top and the top fixed connection of ring, the bottom of spring and the last fixed surface of separator (14) are connected.