CN114922845B

CN114922845B - Closed impeller

Info

Publication number: CN114922845B
Application number: CN202210307534.3A
Authority: CN
Inventors: 徐卫华; 周财华; 姜春华
Original assignee: DEPAMU (HANGZHOU) PUMP TECHNOLOGY CO LTD
Current assignee: DEPAMU (HANGZHOU) PUMP TECHNOLOGY CO LTD
Priority date: 2022-03-25
Filing date: 2022-03-25
Publication date: 2023-08-15
Anticipated expiration: 2042-03-25
Also published as: CN114922845A

Abstract

The invention relates to a closed impeller, comprising: transmission housing, blade and wheel cover. The transmission shell is connected with a discharge pipe body, and a water inlet pipe body is also installed on the transmission shell. The wheel covers are arranged in the transmission shell in pairs. The blades are fixedly connected between the wheel covers, the blades are distributed in a plurality along the wheel covers at equal intervals, and the blades are distributed in a centrifugal mode. A shrouded impeller further comprising: a mechanical pressurizing mechanism. The mechanical pressurizing mechanism comprises: the magnet, the through hole, the elastic membrane body, the connecting sleeve, the sliding rod and the main iron block are embedded. The embedded magnet is embedded and installed on the transmission shell. The transmission shell is close to the position of the discharge pipe body without embedded magnets. And each blade is provided with a through hole. The elastic membrane body is connected to the through hole, and the elastic membrane body covers the through hole. The invention has the advantages that the mechanical automatic pressurizing treatment is carried out on the liquid transmitted by the impeller under the action of no extra energy consumption, thereby saving energy and improving the transmission effect of the transmission impeller.

Description

Closed impeller

Technical Field

The invention relates to the technical field of closed impellers, in particular to a closed impeller.

Background

The closed impeller is a centrifugal impeller with a wheel disc and a wheel cover, and is a type of fixed centrifugal compressor. The impeller is driven to rotate mainly by a driving piece such as a connected driving motor, and then liquid in the environment is sucked into a pump body. Meanwhile, the liquid is pushed to be sprayed out of the discharge port according to a certain pressure by means of rotation of the centrifugally distributed blades. When the acting force of the impeller for conveying liquid needs to be increased, the power of the driving piece for driving the impeller to rotate can only be increased, so that the rotation speed of the driving piece is increased, and the driving piece needs to consume more energy.

Disclosure of Invention

The present invention is directed to a closed impeller to solve the above-mentioned problems.

In order to achieve the above purpose, the present invention provides the following technical solutions:

a shrouded impeller comprising: transmission housing, blade and wheel cover. The transmission shell is connected with a discharge pipe body, and a water inlet pipe body is also installed on the transmission shell. The wheel covers are arranged in the transmission shell in pairs. The blades are fixedly connected between the wheel covers, the blades are distributed in a plurality along the wheel covers at equal intervals, and the blades are distributed in a centrifugal mode. A shrouded impeller further comprising: a mechanical pressurizing mechanism. The mechanical pressurizing mechanism comprises: the magnet, the through hole, the elastic membrane body, the connecting sleeve, the sliding rod and the main iron block are embedded. The embedded magnet is embedded and installed on the transmission shell. The transmission shell is close to the position of the discharge pipe body without embedded magnets. And each blade is provided with a through hole. The elastic membrane body is connected to the through hole, and the elastic membrane body covers the through hole. The connecting sleeve is fixedly connected to the through hole. The slide bar is inserted into the connecting sleeve in a sliding way. The end of the slide bar close to the through hole is connected with the elastic membrane body. The main iron block is fixedly connected to the slide bar far away from the through hole.

As a further scheme of the invention: the mechanical pressurizing mechanism further includes: and the metal flake is used for protecting the elastic membrane body. The metal flakes are uniformly distributed on the elastic membrane body.

As a further scheme of the invention: the mechanical pressurizing mechanism further includes: and a connecting spring. The connecting spring is sleeved on the sliding rod. The two ends of the connecting spring are respectively connected with the sliding rod and the connecting sleeve.

As a further scheme of the invention: the mechanical extrusion mechanism further comprises: and (5) connecting ropes. The connecting ropes are distributed around the end heads of the sliding rods. And the ends of the connecting strings are connected to the elastic membrane body. The connection points of the connection ropes are evenly distributed.

As a further scheme of the invention: the slide bar is a hollow plastic rod body.

As a further scheme of the invention: the inner wall of the connecting sleeve is coated with a smoothing agent which is convenient for the sliding rod to slide.

As a further scheme of the invention: a shrouded impeller further comprising: and an automatic damage detection alarm mechanism. The automatic detection damage alarm mechanism includes: the device comprises a push switch, a magnetic triggering mechanism, a wireless controller, a battery and an alarm. The elastic membrane body is a double-layer membrane body, and the inside of the elastic membrane body is hollow. The elastic membrane body is internally filled with gas. The push switch is installed in the elastic membrane body. An alarm is mounted outside the transmission housing. The wireless controller and the battery are buried in the blade. And the wireless controller is electrically connected with the alarm. The wireless controller, the battery and the push switch are electrically connected. The magnetic triggering mechanism is arranged at the pressing switch.

As a further scheme of the invention: the magnetic triggering mechanism comprises: small magnets and small iron blocks. The small iron block is installed in the elastic membrane body. The small magnet is mounted to the position where the push switch is located.

As a further scheme of the invention: a shrouded impeller further comprising: and connecting the soft belts. The connecting soft belt is connected between the double-layer film bodies of the elastic film bodies. And a plurality of connecting soft belts are distributed in the elastic membrane body.

As a further scheme of the invention: the blade is fixedly connected with the wheel cover through a screw.

Compared with the prior art, the invention has the beneficial effects that: the liquid conveyed by the impeller is automatically pressurized mechanically under the action of no additional energy consumption, so that the energy is saved, and the effect of conveying the liquid by the impeller is improved.

The main iron block on the blade is attracted by the embedded magnet at the shell where the impeller is arranged, so that the elastic membrane on the blade is shaped. When the blade is close to the discharge pipe, the blade is separated from the magnetic action position of the embedded magnet. Then the elastic membrane body instantly rebounds to impact the pushed water flow by means of the self rebound force, so that automatic pressurization is realized. Meanwhile, the water flow is prevented from being pressurized by using electric energy or other energy sources, and the effect of saving energy sources is achieved.

Meanwhile, when the elastic membrane body is damaged, the pressing switch is arranged inside the elastic membrane body because the elastic membrane body is a double-layer membrane. The silver elastic membrane body is damaged and shrunken, the internal press switch is extruded to trigger an external alarm, and an alarm is sent out. So that relevant staff can know that the membrane body is damaged and can be replaced in time.

Other features and advantages of the present invention will be disclosed in the following detailed description of the invention and the accompanying drawings.

Drawings

Fig. 1 is a schematic structural view of a closed impeller according to the present invention.

Fig. 2 is an enlarged schematic view of the vane of the shrouded impeller of the present invention of fig. 1.

Fig. 3 is an enlarged sectional view of the elastic membrane body of the closed impeller of fig. 2.

Fig. 4 is a schematic left-view structural diagram of the blade, wireless controller and battery of the elastic membrane body of the closed impeller of fig. 1 in a matched connection.

Fig. 5 is a schematic top view of the elastic membrane body of the closed impeller of fig. 1, showing the mating connection of the blades and the shroud.

List of reference numerals: a shrouded impeller 100; a transmission case 10; a blade 20; wheel cover 30; a mechanical pressurizing mechanism 40; a magnet 41 is embedded; a through opening 42; an elastic film body 43; a connecting sleeve 44; a slide bar 45; a main iron block 46; metal flakes 47; a connecting spring 48; a connecting rope 49; an automatic detection damage alarm mechanism 50; pressing the switch 51; a magnetic trigger mechanism 52; a small magnet 521; a small iron block 522; a wireless controller 53; a battery 54; an alarm 55; the soft band 60 is attached.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

As shown in fig. 1 to 5, in an embodiment of the present invention, a closed impeller 100 includes: a transmission housing 10, a blade 20 and a wheel cover 30. The discharge pipe body 11 is horizontally and fixedly connected to the upper left side of the transmission housing 10, and the water inlet pipe body 12 is installed at the middle position of the front side of the transmission housing 10. When the whole apparatus is installed in a water source, water flows from the water inlet pipe body 12 into the transmission housing 10, and then is discharged from the discharge pipe body 11 by the action of the internally closed impeller. The wheel caps 30 are disposed in pairs inside the transfer housing 10. The blades 20 are fixedly connected between the wheel caps 30, and the blades 20 are distributed in plurality along the wheel caps 30 at equal intervals, and the blades 20 are centrifugally distributed. The driving motor for driving the blades 20 to rotate is installed outside the transmission housing 10, and a main shaft end of the driving motor is fixedly connected to a center position of the wheel cover 30. The driving motor drives the centrifugally distributed blades 20 to rotate anticlockwise in the transmission shell 10 through the wheel cover 30, so that water flow in the water source space where the transmission shell 10 is positioned is conveniently sucked into the transmission shell 10, and then the water flow is discharged from the discharge pipe 11 by pushing of the blades 20. The shrouded impeller 100 further comprises: a mechanical pressing mechanism 40. The mechanical pressing mechanism 40 includes: the embedded magnet 41, the through hole 42, the elastic membrane 43, the connecting sleeve 44, the sliding rod 45 and the main iron block 46. The embedded magnet 41 is fitted to the inner wall of the transmission case 10. The transmission housing 10 is distributed near the inner wall of the discharge pipe 11 without embedded magnets 41. Each blade 20 is provided with a through opening 42. An elastic film body 43 is attached to the through-hole 42, and the elastic film body 43 covers the through-hole 42. The connecting sleeve 44 is fixedly connected to the side of the through opening 42 adjacent to the inner wall of the transmission housing 10. The slide rod 45 is inserted into the connecting sleeve 44 in a sliding manner. The slide bar 45 can slide in the connecting sleeve 44, and the slide bar 45 is vertical to the end face where the through hole 42 is located. The end of the slide bar 45 near the through hole 42 is connected with the elastic membrane 43. The main iron block 46 is fixedly connected to the slide bar 45 at the end remote from the through opening 42.

When each of the blades 20 rotates counterclockwise along with the wheel cover 30 without approaching the position of the discharge pipe 11, the main iron piece 46 on the blade 20 is located in the range where the embedded magnet 41 is distributed. At this time, the magnetic force of the embedded magnet 41 attracts the main iron piece 46. So that the main iron block 46 drives the slide rod 45 to slide along the connecting sleeve 44 to approach the embedded magnet 41. When the sliding rod 45 slides close to the embedded magnet 41, the sliding rod 45 pulls the elastic membrane 43 to deform to generate resilience force. When the vane 20 is rotated to a position close to the port of the discharge pipe 11, the main iron piece 46 on the special piece 20 is separated from the distribution range of the embedded magnet 41. The main iron block 46 loses the magnetic force effect, and then the elastic membrane 43 is rebounded and reset, so that the water is promoted to flow into the discharge pipe body 11 by means of the rebound force, the mechanical automatic pressurization is realized, and the additional pressurization energy source is not needed to be supplied.

The mechanical pressing mechanism 40 further includes: metal flakes 47 for protecting the elastic membrane body 43. The metal flakes 47 are uniformly distributed on the end face of the elastic membrane body 43. The metal flakes 47 are arranged in a fish scale manner, so that the elastic membrane 43 can be deformed conveniently, and the elastic membrane 43 can be protected, so that when some sharp objects exist in the transported water flow liquid to strike the elastic membrane 43, the metal flakes 47 play a role in blocking and protecting. The service life of the elastic membrane 43 is prolonged.

The mechanical pressing mechanism 40 further includes: and a connecting spring 48. The connecting spring 48 is sleeved on the slide rod 45. The two ends of the connecting spring 48 are respectively connected with the slide rod 45 and the connecting sleeve 44. When the main iron block 46 slides relative to the connection sleeve 44 due to the magnetic force of the embedded magnet 41, the connection spring 48 is compressed to generate a repulsive force. When the slide bar 45 is reset along with the rebound of the elastic membrane body 43, the connecting spring 48 also releases the rebound force, so that the pressurizing effect of the elastic membrane body 43 on the water flow is enhanced.

The mechanical pressing mechanism 40 further includes: and a connecting rope 49. The connecting ropes 49 are distributed around the ends of the slide bar 45. And the end of the connection cord 49 is connected to the elastic membrane body 43. The connection points of the connection strings 49 are uniformly distributed. The connecting rope 49 facilitates the sliding rod 45 to pull the elastic membrane 43 to deform.

The slide bar 45 is a hollow plastic rod body, so that the excessive weight of the slide bar is avoided.

The inner wall of the connecting sleeve 44 is coated with a smoothing agent which facilitates the sliding of the sliding rod 45, and the sliding rod 45 facilitates the sliding in the connecting sleeve 44 because the smoothing agent reduces the friction force in the connecting sleeve 44.

The shrouded impeller 100 further comprises: the damage alarm mechanism 50 is automatically detected. The automatic damage detection alarm mechanism 50 includes: a push switch 51, a magnetic trigger 52, a wireless controller 53, a battery 54, and an alarm 55. The elastic membrane 43 is a double-layered membrane, and is hollow inside. The elastic membrane 43 is filled with gas to ensure that the elastic membrane 43 is inflated and expanded and has a certain air pressure. The push switch 51 is mounted to the inner wall of the elastic membrane 43. An alarm 55 is mounted to the outside of the transmission case 10. The wireless controller 53 and the battery 54 are buried in the blade 20, and the positions of the wireless controller 53, the battery 54 and the push switch 51 are subjected to waterproof treatment. The position is covered by the waterproof film, so that the damage caused by contact with water is avoided, the alarm can not be triggered normally, and the use is influenced. And the wireless controller 53 is electrically connected to the alarm 55. The wireless controller 53, the battery 54, and the push switch 51 are electrically connected. The magnetic triggering mechanism 52 is mounted to the push switch 51.

When the elastic membrane 43 is broken by an impact of an object, the gas inside the double-layered elastic membrane 43 flows out. Thus, the elastic membrane 43 is deflated, resulting in the two layers of membrane of the elastic membrane 43 being bonded together. Then, the push switch 51 inside the elastic membrane 43 is pressed to trigger the wireless controller 53. The wireless controller 53 then causes the external alarm 55 to move. The damage to related staff is conveniently prompted.

The magnetic triggering mechanism 52 includes: a small magnet 521 and a small iron block 522. The small iron block 522 is mounted to the inner wall of the elastic membrane body 43 facing the push switch 51. The small magnet 521 is mounted to the push switch 51 at the position. When the elastic membrane 43 collapses due to wear, it is deflated. The small magnet 521 and the small iron block 522 are attracted together to facilitate pressing the push switch 51. Avoiding that the push switch 51 is not subjected to a sufficient squeezing force to trigger the alarm 55.

The shrouded impeller 100 further comprises: the soft band 60 is attached. The connecting flexible band 60 is connected between the double-layered film bodies of the elastic film body 43. And the connecting soft belt 60 is distributed in a plurality in the elastic film body 43. The connecting soft belt 60 facilitates the synchronous deformation of the double-layer film body of the elastic film body 43 when one side of the elastic film body 43 connected with the sliding rod 45 is pulled.

The blade 20 is fixedly connected with the wheel cover 30 through screws, and can be detached and replaced.

Working principle: the driving motor outside the transmission housing 10 causes the wheel cover 30 to rotate the vane 20 counterclockwise. When each blade 20 is not close to the position of the discharge pipe 11 during rotation, the main iron block 46 on the blade 20 is in the range of the distribution of the embedded magnets 41. At this time, the magnetic force of the embedded magnet 41 attracts the main iron piece 46. So that the main iron block 46 drives the slide rod 45 to slide along the connecting sleeve 44 to approach the embedded magnet 41. When the sliding rod 45 slides close to the embedded magnet 41, the sliding rod 45 pulls the elastic membrane 43 to deform to generate resilience force. When the vane 20 is rotated to a position close to the port of the discharge pipe 11, the main iron piece 46 on the special piece 20 is separated from the distribution range of the embedded magnet 41. The main iron block 46 loses the magnetic force effect, and then the elastic membrane 43 is rebounded and reset, so that the water is promoted to flow into the discharge pipe body 11 by means of the rebound force, the mechanical automatic pressurization is realized, and the additional pressurization energy source is not needed to be supplied.

When the elastic membrane 43 mounted on the blade 20 is broken by the impact of an object during the rotation of the blade 20, the gas inside the double-layered elastic membrane 43 flows out. Thus, the elastic membrane 43 is shrunken, and the small magnet 521 and the small iron 522 inside the elastic membrane 43 are adsorbed together, so that the two membranes of the elastic membrane 43 are attached together, and the push switch 51 is conveniently pressed. Then, the push switch 51 inside the elastic membrane 43 is pressed to trigger the wireless controller 53. The wireless controller 53 then causes the external alarm 55 to move. The damage to related staff is conveniently prompted.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. A shrouded impeller comprising: a transmission housing, blades and wheel covers; the transmission shell is connected with a discharge pipe body, and meanwhile, the transmission shell is also provided with a water inlet pipe body; the wheel covers are arranged in the transmission shell in pairs; the blades are fixedly connected between the wheel covers, and are distributed in a plurality of equal intervals along the wheel covers, and the blades are distributed centrifugally; the closed impeller is characterized by further comprising: a mechanical pressurizing mechanism; the mechanical pressurizing mechanism includes: the magnet, the through hole, the elastic membrane body, the connecting sleeve, the sliding rod and the main iron block are embedded; the embedded magnet is embedded and mounted on the transmission shell; the transmission shell is close to the position of the discharge pipe body, and no embedded magnets are distributed; each blade is provided with a through hole;

the elastic membrane body is connected to the through hole, and the elastic membrane body covers the through hole; the connecting sleeve is fixedly connected to the through hole; the sliding rod is inserted into the connecting sleeve in a sliding way; the end of the sliding rod, which is close to the through hole, is connected with the elastic membrane body; the main iron block is fixedly connected to the position, far away from the through hole, of the sliding rod;

the mechanical pressurizing mechanism further includes: a connecting spring; the connecting spring is sleeved on the sliding rod; the two ends of the connecting spring are respectively connected with the sliding rod and the connecting sleeve;

the mechanical pressurizing mechanism further includes: a connecting rope; the connecting ropes are distributed around the end heads of the sliding rods; and the end of the connecting rope is connected to the elastic membrane body; the connection points of the connection ropes are uniformly distributed.

2. A closed impeller according to claim 1, wherein the slide bar is a hollow plastic rod.

3. A closed impeller according to claim 1, wherein the inner wall of the connecting sleeve is coated with a slip agent which facilitates the sliding movement of the slide bar.

4. A shrouded impeller according to claim 1, wherein said shrouded impeller further comprises: automatically detecting a damage alarm mechanism; the automatic damage detection alarm mechanism comprises: the device comprises a push switch, a magnetic triggering mechanism, a wireless controller, a battery and an alarm; the elastic membrane body is a double-layer membrane body, and the inside of the elastic membrane body is hollow; the elastic membrane body is internally filled with gas; the push switch is arranged in the elastic membrane body; the alarm is arranged outside the transmission shell; the wireless controller and the battery are buried in the blade; and the wireless controller is electrically connected with the alarm; the wireless controller, the battery and the push switch are electrically connected; the magnetic triggering mechanism is mounted at the pressing switch.

5. The closed impeller of claim 4, wherein the magnetic trigger mechanism comprises: small magnets and small iron blocks; the small iron block is installed in the elastic membrane body; the small magnet is mounted to the position where the push switch is located.

6. The shrouded impeller of claim 4, wherein the shrouded impeller further comprises: connecting a soft belt; the connecting soft belt is connected between the double-layer film bodies of the elastic film bodies; and a plurality of connecting soft belts are distributed in the elastic membrane body.

7. The closed impeller of claim 4 wherein the blades are fixedly attached to the shroud by screws.