CN209959485U

CN209959485U - Shielding type booster pump beneficial to heat dissipation

Info

Publication number: CN209959485U
Application number: CN201920786716.7U
Authority: CN
Inventors: 陈荣国; 颜正辉; 陈志平; 陈海林
Original assignee: Hangzhou Xinkong Electronic Technology Co Ltd
Current assignee: Hangzhou Xinkong Electronic Technology Co Ltd
Priority date: 2019-05-29
Filing date: 2019-05-29
Publication date: 2020-01-17
Anticipated expiration: 2029-05-29

Abstract

The utility model relates to a shielding type booster pump beneficial to heat dissipation, which comprises an upper shell, a lower shell, a shielding sleeve, an impeller and a fixed shaft, wherein the lower shell is connected with the lower part of the upper shell, the lower shell is provided with a liquid inlet, a cavity and a liquid outlet, and the liquid inlet is communicated with the liquid outlet through the cavity; the shielding sleeve is positioned in the upper shell; the impeller comprises an impeller shaft and impeller blades connected with the lower part of the impeller shaft; two ends of a fixed shaft are respectively arranged in the cavity of the lower shell and the shielding sleeve, and an impeller shaft and a rotor are sequentially sleeved on the fixed shaft in a rotating manner from inside to outside; the impeller blades are positioned in the cavity, the impeller shaft is positioned in the shielding sleeve, the impeller shaft is provided with a through hole for medium in the impeller to flow out, the through hole is positioned below the rotor, and when the impeller rotates, the medium flowing out of the through hole can move upwards to the rotor under the action of centrifugal force of the impeller, so that the rotor, the bearing and the like are cooled and lubricated, and the phenomenon that the friction force of parts such as a shielding pump tripping machine or the rotor and the like is overlarge when the rotor and the bearing rotate due to overhigh temperature is avoided.

Description

Shielding type booster pump beneficial to heat dissipation

Technical Field

The utility model relates to a shielding formula booster pump, concretely relates to do benefit to radiating shielding formula booster pump.

Background

A canned motor pump is a device that is powered by inertial centrifugal force to increase pressure by an impeller rotating at high speed. As shown in the "shielding circulating pump" disclosed in the chinese utility model patent with patent No. ZL201721235744.7 (publication No. CN207634335U), including the plastic package motor, the pump body connected with the plastic package motor, set up the fixed axle in the plastic package motor and arrange in the cover fixed epaxial rotor assembly, set up in rotor assembly outlying stator assembly, isolation the housing of rotor assembly and stator assembly, its characterized in that fixed axle one end is inserted in the mounting hole of housing, the other end is inserted in the mounting hole of the pump body, at least one end of fixed axle and the mounting hole that corresponds form the rotation stopping cooperation through the fastener.

When the pump works, the rotor assembly can rotate at a high speed, so that components are heated, and the components are easily abraded due to large friction force among the components in the rotating process; in addition, the bearing is sintered and damaged due to overhigh temperature caused by heating of the components, and the phenomenon of trip is easily generated, so that the running period of equipment is short and unstable, the fluctuation of a production system is easily caused, the maintenance frequency is increased, and certain harm is brought to the environment.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to prior art's current situation, provide one kind and can utilize self medium to carry out the cooling and lubrication do benefit to radiating shielded booster pump.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: a shielding type booster pump beneficial to heat dissipation comprises

An upper shell;

the lower shell is connected with the lower part of the upper shell and is provided with a liquid inlet, a cavity and a liquid outlet, and the liquid inlet is communicated with the liquid outlet through the cavity;

the shielding sleeve is positioned in the upper shell, and a plurality of stators which are sequentially overlapped from top to bottom are arranged between the inner wall of the upper shell and the outer wall of the shielding sleeve;

the impeller comprises an impeller shaft and impeller blades connected with the lower part of the impeller shaft;

the two ends of the fixed shaft are respectively arranged in the cavity of the lower shell and the shielding sleeve, the fixed shaft is sequentially sleeved with an impeller shaft and a rotor in a rotating mode from inside to outside, and the rotor is located in the shielding sleeve and has a gap with the shielding sleeve;

the impeller is characterized in that the impeller blades are positioned in the cavity, the impeller shaft is positioned in the shielding sleeve, a through hole for medium in the impeller to flow out is formed in the impeller shaft, and the through hole is positioned below the rotor.

In order to enable the medium to flow out of the liquid outlet of the lower shell after the medium is subjected to the centrifugal action of the impeller, the liquid inlet is communicated with the bottom of the cavity, a flow channel communicated with the liquid outlet is formed in the peripheral wall of the cavity along the circumferential direction, and the flow channel plays a role of a bridge, so that the medium flows along the flow channel after entering from the liquid inlet and after passing through the action of the impeller and finally flows out of the liquid outlet.

In order to avoid abrasion caused by large friction force between the impeller and the fixed shaft when the impeller rotates, a bearing is arranged between the fixed shaft and the impeller.

In order to improve the assembly stability of the shielding sleeve in the upper shell, the top wall of the upper shell is provided with a positioning block extending downwards, and the top wall of the shielding sleeve is provided with a positioning groove capable of containing the positioning block. The matching of the positioning block and the positioning groove prevents the shielding sleeve from moving axially or moving radially.

In order to facilitate the connection of the shielding sleeve, the upper shell and the lower shell, the shielding sleeve is in a cylindrical shape, the upper shell is in a cylindrical shape with the lower end open, the shielding sleeve extends into the upper shell from the open end of the upper shell, a connecting seat which extends outwards from the periphery of the connecting seat and is positioned between the upper shell and the lower shell is formed at the lower part of the shielding sleeve, and the upper shell and the lower shell are connected with the connecting seat. If the connecting seat is not provided, the shielding sleeve, the upper shell and the lower shell need to be connected in pairs, so that the assembly work is complicated, more connecting structures (such as connecting holes and the like) need to be arranged, and the processing difficulty of parts is increased; after the connecting seat is arranged, the upper shell and the lower shell are installed corresponding to the connecting seat only because the connecting seat and the shielding sleeve are integrally formed, and then the three are connected at one time through the fastening piece, so that the assembling and disassembling steps of the three are simplified.

In order to improve the assembling accuracy of the booster pump, the connecting seat comprises an annular body and at least two first connecting parts formed on the periphery of the annular body along the circumferential direction, a first connecting hole is formed in each first connecting part, the lower end of the upper shell is arranged on the annular body, at least two second connecting parts in one-to-one correspondence with the first connecting parts are formed on the outer circumferential wall of the upper shell along the circumferential direction, a second connecting hole is formed in each second connecting part, at least two third connecting holes in one-to-one correspondence with the first connecting holes are formed in the lower shell along the circumferential direction, and the corresponding first connecting holes, the corresponding second connecting holes and the corresponding third connecting holes are connected through fasteners. So first connecting hole, second connecting hole and third connecting hole all have a plurality ofly, guarantee to assemble firmly between inferior valve, epitheca and the shield cover three, prevent that the three from producing the displacement under the assembled state, influence the normal work of canned motor pump.

In order to further improve the connection firmness of the shielding sleeve, the upper shell and the lower shell, the annular body comprises an extension part which extends outwards along the radial direction of the periphery of the shielding sleeve and an annular ring which extends vertically from the periphery of the extension part, the first connecting part is formed at the periphery of the annular ring, the lower part of the upper shell is abutted against the annular ring, and a first sealing ring is arranged between the upper shell and the annular ring, so that the connection firmness of the shielding sleeve and the upper shell is improved, and impurities are prevented from entering the upper shell and the lower shell due to gaps between the shielding sleeve and the upper; the upper portion of inferior valve offsets with the annular ring and is equipped with the second sealing washer between the two, has improved the firm in connection nature of housing and inferior valve to prevent that the clearance from leading to the medium outflow between the two.

In order to facilitate placement of the first sealing ring, a first groove extending to the upper end face of the annular ring is formed in the inner side wall of the annular ring, a first flange extending radially along the peripheral wall of the upper shell and a second flange extending vertically along the peripheral wall of the upper shell are arranged at the lower portion of the upper shell, the second connecting portion is formed at the periphery of the first flange, the first flange abuts against the upper end face of the annular ring, the second flange abuts against the inner wall of the annular ring, and a first accommodating space used for accommodating the first sealing ring is surrounded by the first flange, the second flange and the first groove.

In order to further strengthen the connection firmness between the shell and the shielding sleeve, the upper end face of the annular ring is provided with a first limiting block extending upwards, and a first limiting groove in limiting fit with the limiting block is formed in the first flange. The first limiting block is matched with the first limiting groove to prevent the shielding sleeve from rotating circumferentially relative to the upper shell; and another benefit that first stopper and first spacing groove set up does: after the first limiting block is arranged in the limiting groove, the first connecting portion and the second connecting portion are aligned, otherwise, the first connecting portion and the second connecting portion need to be adjusted for many times.

In order to place the second sealing ring conveniently, set up the second recess of the L type that extends to terminal surface under the annular ring on the lateral wall of annular ring, have the tertiary step that links to each other in proper order from bottom to top on the inferior valve, the annular ring supports on first order step and tertiary step to make second recess and second level step enclose synthetic second accommodation space that is used for holding the second sealing ring.

Compared with the prior art, the utility model has the advantages that: the through hole is arranged on the impeller shaft, when the impeller rotates, the medium flowing out from the through hole can move upwards to the rotor under the action of the centrifugal force of the impeller, so that the rotor, the bearing and the like are cooled and lubricated, and the phenomenon that the friction force is too large when the rotor and the bearing rotate to cause the shielding pump to jump or the rotor and other parts to damage the parts due to the overhigh temperature is avoided; the utility model utilizes the medium of the utility model to cool and lubricate, and does not need to arrange special parts for cooling and lubricating, so that the shielding pump has simple structure and small volume; and the medium can flow back to the cavity of the lower shell after cooling and lubricating the parts such as the rotor and the like, and finally flows out of the liquid outlet of the lower shell, so that the waste of the medium can not be caused.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is a partially exploded view of FIG. 1;

FIG. 4 is a schematic structural view of the upper case of FIG. 3;

fig. 5 is a structural view of the lower case of fig. 3;

fig. 6 is a schematic structural view in another direction of fig. 5.

Fig. 7 is a schematic structural view of the shielding case and the connecting socket in fig. 3;

fig. 8 is a schematic structural view in another direction of fig. 7.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1 to 8, the shielding type booster pump facilitating heat dissipation of the preferred embodiment includes an upper casing 1, a lower casing 2, a shielding sleeve 3 and a fixed shaft 4, wherein the upper casing 1 and the shielding sleeve 3 are both in a cylindrical shape, the shielding sleeve 3 extends into the upper casing 1 from an open end of a lower portion of the upper casing 1, and a plurality of stators 61 are arranged between an inner wall of the upper casing 1 and an outer wall of the shielding sleeve 3 and are sequentially stacked from top to bottom. The top wall of the upper shell 1 is provided with a positioning block 14 extending downwards, and the top wall of the shielding sleeve 3 is provided with a positioning groove 32 capable of accommodating the positioning block 14.

The lower part of the shielding case 3 is formed with a connecting socket 5 extending outward from the periphery thereof and located between the upper case 1 and the lower case 2, and both the upper case 1 and the lower case 2 are connected to the connecting socket 5.

The connecting seat 5 comprises an annular body 50 and at least two first connecting parts 51, the annular body 50 comprises an extending part 52 extending outwards along the radial direction of the periphery of the shielding sleeve 3 and an annular ring 53 extending vertically from the periphery of the extending part 52, a plurality of first connecting parts 51 are formed at the periphery of the annular ring 53 at intervals along the circumferential direction, each first connecting part 51 is provided with a first connecting hole 511, the peripheral wall of the upper shell 1 is formed with at least two second connecting parts 11 corresponding to the first connecting parts 51 one by one along the circumferential direction, each second connecting part 11 is provided with a second connecting hole 111, the lower shell 2 is provided with at least two third connecting holes 22 corresponding to the first connecting holes 511 one by one along the circumferential direction, each first connecting hole 511 corresponds to one second connecting hole 111 and one third connecting hole 22, the correspondingly disposed first connection hole 511, second connection hole 111 and third connection hole 22 are connected by a fastener 7. The fastening member 7 may be a bolt and a nut, and the bolt is inserted into the first connection hole 511, the second connection hole 111, and the third connection hole 22, and then fastened by the nut, so that the shield case 3 is connected to the upper case 1.

The lower part of the upper shell 1 is abutted against the annular ring 53, and a first sealing ring A1 is arranged between the lower part of the upper shell and the annular ring. The inner side wall of the annular ring 53 is provided with a first groove 533 extending to the upper end surface of the annular ring 53, the lower part of the upper shell 1 is provided with a first flange 12 extending radially along the outer peripheral wall thereof and a second flange 13 extending vertically along the inner peripheral wall thereof, the second connecting part 11 is formed on the periphery of the first flange 12, the first flange 12 abuts against the upper end surface of the annular ring 53, the second flange 13 abuts against the inner wall of the annular ring 53, and the first flange 12, the second flange 13 and the first groove 533 enclose a first accommodating space a for accommodating the first sealing ring a 1.

In addition, the upper end face of the annular ring 53 is provided with a first limiting block 531 extending upwards, the first flange 12 is provided with a first limiting groove 121 in limiting fit with the first limiting block 531, and the first limiting block 531 and the first limiting groove 121 are matched to prevent the upper shell 1 and the shielding sleeve 3 from generating relative circumferential rotation.

The upper portion of inferior valve 2 offsets and annular ring 53 is equipped with second sealing washer A2 between the two, set up the second recess 534 that extends to the L type of annular ring 53 lower extreme face on the lateral wall of annular ring 53, have the tertiary step that links to each other in proper order from bottom to top on inferior valve 2, the both sides wall of second recess 534 offsets respectively on first order step 24a and third level step 24c to make second recess 534 and second level step 24b enclose synthetic second accommodation space b that is used for holding second sealing washer A2.

In addition, the outer peripheral wall of the annular ring 53 is provided with a second limiting block 532 extending radially outwards, the upper end face of the lower shell 2 is provided with a second limiting groove 23 in limiting fit with the second limiting block 532, the second limiting groove 23 is connected with the third-stage step 24, and the second limiting block 532 is matched with the second limiting groove 23 to prevent the lower shell 2 and the shielding sleeve 3 from generating relative circumferential rotation.

The lower shell 2 is provided with a liquid inlet 2a, a cavity 2b and a liquid outlet 2c, the liquid inlet 2a is communicated with the bottom of the cavity 2b, and a flow channel 2d communicated with the liquid outlet 2c is arranged on the circumferential wall of the cavity 2b along the circumferential direction.

The shaping has the first erection column 21 that upwards extends in the cavity 2b of inferior valve 2, has seted up first mounting groove 211 on the first erection column 21, and the shaping has downwardly extending's second erection column 31 on the roof of housing 3, has seted up second mounting groove 311 on the second erection column 31, and the both ends of fixed axle 4 are installed respectively in first mounting groove 211 and in the second mounting groove 311.

The impeller 7 comprises an impeller shaft 72 and impeller blades 73 connected with the lower part of the impeller shaft 72, the impeller 7 is hollow in the whole body, the impeller shaft 72 is sleeved on the fixed shaft 4, the impeller blades 73 extend into the cavity 2b and surround the periphery of the first mounting column 21, and a space is reserved between the impeller blades 73 and the first mounting column 21. The fixed shaft 4 is sleeved with a bearing 9, an impeller shaft 72 and a rotor 62 which are all positioned in the shielding sleeve 3 from inside to outside in sequence, and a gap is reserved between the rotor 62 and the shielding sleeve 3.

The impeller shaft 72 is provided with a through hole 71 for the medium in the impeller 7 to flow out, i.e. the through hole 71 is positioned in the shielding sleeve 3 and below the rotor 62. When the impeller 7 rotates, the medium flowing out of the through hole 71 can move upwards to the rotor 62 under the action of the centrifugal force of the impeller 7, so that the rotor 62, the bearing 9 and the like are cooled and lubricated; and the medium flows back into the cavity 2b of the lower shell 2 after cooling and lubricating the rotor 62 and other parts, and finally flows out from the liquid outlet 2c of the lower shell 2.

Third sealing rings 63 for preventing the fixed shaft 4 from rotating are arranged between the first mounting groove 211 and the fixed shaft 4 and between the second mounting groove 311 and the fixed shaft 4, and the third sealing rings 63 play a role in rotation stopping.

Claims

1. A shielding type booster pump beneficial to heat dissipation comprises

An upper case (1);

the lower shell (2) is connected with the lower part of the upper shell (1) and is provided with a liquid inlet (2a), a cavity (2b) and a liquid outlet (2c), and the liquid inlet (2a) is communicated with the liquid outlet (2c) through the cavity (2 b);

the shielding sleeve (3) is positioned in the upper shell (1), and a plurality of stators (61) which are sequentially overlapped from top to bottom are arranged between the inner wall of the upper shell (1) and the outer wall of the shielding sleeve (3);

the impeller (7) comprises an impeller shaft (72) and impeller blades (73) connected with the lower part of the impeller shaft (72);

the two ends of the fixed shaft (4) are respectively arranged in the cavity (2b) of the lower shell (2) and the shielding sleeve (3), the fixed shaft (4) is sequentially sleeved with an impeller shaft (72) and a rotor (62) in a rotating mode from inside to outside, and the rotor (62) is located in the shielding sleeve (3) and has a gap with the shielding sleeve (3);

the impeller is characterized in that the impeller blades (73) are positioned in the cavity (2b), the impeller shaft (72) is positioned in the shielding sleeve (3), a through hole (71) for allowing a medium in the impeller (7) to flow out is formed in the impeller shaft (72), and the through hole (71) is positioned below the rotor (62).

2. The shield-type booster pump facilitating heat dissipation of claim 1, wherein: the liquid inlet (2a) of the lower shell (2) is communicated with the bottom of the cavity (2b) of the lower shell (2), and a flow channel (2d) communicated with the liquid outlet (2c) of the lower shell (2) is formed in the peripheral wall of the cavity (2b) along the circumferential direction.

3. The shield-type booster pump facilitating heat dissipation of claim 1, wherein: and a bearing (9) positioned in the shielding sleeve (3) is arranged between the fixed shaft (4) and the impeller (7).

4. The shield-type booster pump facilitating heat dissipation of claim 1, wherein: the top wall of the upper shell (1) is provided with a positioning block (14) extending downwards, and the top wall of the shielding sleeve (3) is provided with a positioning groove (32) capable of containing the positioning block (14).

5. The shielding type booster pump facilitating heat dissipation according to any one of claims 1 to 4, wherein: the utility model discloses a shield sleeve, including upper shell (1), shield sleeve (3), upper shell (1) and lower casing (2), shield sleeve (3) are the tube-shape, upper shell (1) is the open tube-shape of lower extreme, shield sleeve (3) stretch into in upper shell (1) from the open end of upper shell (1), just shield sleeve (3) lower part shaping has by its periphery outwards extend and lie in connecting seat (5) between upper shell (1) and lower casing (2), upper shell (1) and lower casing (2) all link to each other with this connecting seat (5).

6. The shield-type booster pump facilitating heat dissipation of claim 5, wherein: the connecting seat (5) comprises an annular body (50) and at least two first connecting parts (51) formed on the periphery of the annular body (50) along the circumferential direction, each first connecting part (51) is provided with a first connecting hole (511), the lower end of the upper shell (1) is arranged on the annular body (50), the outer circumferential wall of the upper shell (1) is provided with at least two second connecting parts (11) in one-to-one correspondence with the first connecting parts (51) along the circumferential direction, each second connecting hole (111) is formed in each second connecting part (11), at least two third connecting holes (22) in one-to-one correspondence with the first connecting holes (511) are formed in the lower shell (2) along the circumferential direction, and the corresponding first connecting holes (511), second connecting holes (111) and third connecting holes (22) are connected through fasteners (8).

7. The shield-type booster pump facilitating heat dissipation of claim 6, wherein: the annular body (50) comprises an extension part (52) extending outwards along the radial direction of the periphery of the shielding sleeve (3) and an annular ring (53) extending vertically from the periphery of the extension part (52), a first connecting part (51) is formed on the periphery of the annular ring (53), the lower part of the upper shell (1) abuts against the annular ring (53) and a first sealing ring (A1) is arranged between the lower part of the upper shell and the annular ring, and the upper part of the lower shell (2) abuts against the annular ring (53) and a second sealing ring (A2) is arranged between the upper shell and the annular ring.

8. The shield-type booster pump facilitating heat dissipation of claim 7, wherein: the inner side wall of the annular ring (53) is provided with a first groove (533) extending to the upper end face of the annular ring (53), the lower portion of the upper shell (1) is provided with a first flange (12) extending along the radial direction of the outer peripheral wall of the upper shell and a second flange (13) extending along the vertical direction of the inner peripheral wall of the upper shell, the second connecting portion is formed on the periphery of the first flange (12), the first flange (12) abuts against the upper end face of the annular ring (53), the second flange (13) abuts against the inner wall of the annular ring (53), and the first flange (12), the second flange (13) and the first groove (533) surround a first accommodating space (a) used for accommodating the first sealing ring (A1).

9. The shield-type booster pump facilitating heat dissipation of claim 8, wherein: the upper end face of the annular ring (53) is provided with a first limiting block (531) extending upwards, and the first flange (12) is provided with a first limiting groove (121) in limiting fit with the limiting block.

10. The shield-type booster pump facilitating heat dissipation of claim 7, wherein: set up second recess (534) that extends to the L type of annular ring (53) lower extreme face on the lateral wall of annular ring (53), have the tertiary step that links to each other in proper order from bottom to top on inferior valve (2), annular ring (53) are supported on first order step (24a) and third level step (24c) to make second recess (534) and second level step (24b) enclose synthetic second accommodation space (b) that are used for holding second sealing washer (A2).