CN210033963U

CN210033963U - Accurate shielded booster pump in assembly location

Info

Publication number: CN210033963U
Application number: CN201920795351.4U
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: 2020-02-07
Anticipated expiration: 2029-05-29

Abstract

The utility model relates to a shielding type booster pump with accurate assembly and positioning, which comprises a lower shell, an upper shell, a shielding sleeve and a fixed shaft, wherein the upper shell is positioned above the lower shell, and the shielding sleeve is positioned in the upper shell; a first mounting column extending upwards is formed on the lower shell, a first mounting groove is formed in the first mounting column, a second mounting column extending downwards is formed on the top wall of the shielding sleeve, a second mounting groove is formed in the second mounting column, and two ends of the fixing shaft are mounted in the first mounting groove and the second mounting groove respectively; the forming of housing lower part has by its periphery outwards extends and lies in the connecting seat between epitheca and the inferior valve, has seted up first connecting hole on the connecting seat, has seted up the second connecting hole that corresponds with first connecting hole on the epitheca, has seted up the third connecting hole that corresponds with first connecting hole on the inferior valve, and first connecting hole, second connecting hole and third connecting hole pass through the fastener and link to each other. The utility model discloses a first erection column and second erection column axiality are good.

Description

Accurate shielded booster pump in assembly location

Technical Field

The utility model relates to a shielded booster pump, concretely relates to accurate shielded booster pump in positioning.

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.

Since the impeller and the rotor are assembled to the stationary shaft, whether the stationary shaft is assembled in place is critical to the operation of the canned motor pump. The assembly hole on the pump body of the canned motor pump is arranged on the cylinder on the pump body, and is not directly integrally formed, so that the coaxiality of the assembly hole of the canned motor cover and the assembly hole of the pump body is poor, the installation reliability of the fixed shaft is influenced, and the working performance of the pump is further influenced; and this circulating pump also does not set up other structures that can help the pilot hole of housing and the pilot hole of the pump body to aim at fast in order to reach better axiality.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to prior art's current situation, provide an accurate shielded booster pump of positioning for installing two erection column axialities of fixed axle are good.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: a shielding type booster pump with accurate assembly and positioning comprises a lower shell, an upper shell, a shielding sleeve and a fixed shaft, wherein the upper shell is positioned above the lower shell, and the shielding sleeve is positioned in the upper shell;

the method is characterized in that: a first mounting column extending upwards is formed on the lower shell, a first mounting groove is formed in the first mounting column, a second mounting column extending downwards is formed on the top wall of the shielding sleeve, a second mounting groove is formed in the second mounting column, and two ends of the fixing shaft are respectively mounted in the first mounting groove and the second mounting groove;

the shielding sleeve lower part shaping has and extends outward and lie in the connecting seat between epitheca and the inferior valve by its periphery, first connecting hole has been seted up on the connecting seat, set up the second connecting hole that corresponds with first connecting hole on the epitheca, set up the third connecting hole that corresponds with first connecting hole on the inferior valve, first connecting hole, second connecting hole and third connecting hole pass through the fastener and link to each other.

In order to further 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, each first connecting part is provided with the first connecting hole, the upper shell is cylindrical, at least two second connecting parts in one-to-one correspondence with the first connecting parts are formed on the peripheral wall of the upper shell along the circumferential direction, each second connecting part is provided with the second connecting hole, and the lower shell is provided with at least two third connecting holes in one-to-one correspondence with the first connecting holes along the circumferential direction. So first connecting hole, second connecting hole and third connecting hole all have a plurality ofly, have improved between inferior valve, epitheca and the housing shield three assembly fastness, prevent that the three from producing the displacement under the assembled state, influence the axiality of first erection column and second erection column.

In order to enable the first connecting hole and the second connecting hole to be quickly aligned, the annular body comprises an extending portion and an annular ring, the extending portion extends radially outwards along the periphery of the shielding sleeve, the annular ring extends vertically from the periphery of the extending portion, the first connecting portion is formed on the periphery of the annular ring, the upper shell and the lower shell are respectively in contact with the upper end and the lower end of the annular ring, a first limiting block extending upwards is arranged on the upper end face of the annular ring, and a first limiting groove in limiting fit with the first limiting block is formed in the upper shell. The cooperation of first stopper and first spacing groove can prevent to produce relative circumferential direction between shield sleeve and the epitheca, and is arranging first stopper in first spacing groove after, first connecting portion and second connecting portion aim at promptly, otherwise need adjust many times in order to aim at first connecting portion and second connecting portion.

In order to make first connecting hole and third connecting hole can aim at fast, be equipped with the second stopper of radial outside extension on the periphery wall of annular ring, the up end of inferior valve is seted up with the spacing complex second spacing groove of second stopper. The cooperation of second stopper and second spacing groove can prevent to produce relative circumferential direction between shield sleeve and the inferior valve, and is arranging the second stopper in the second spacing groove after, and first connecting hole and third connecting hole are aimed at promptly, otherwise need adjust many times in order to aim at first connecting hole and third connecting hole.

In order to further improve the connection firmness of the shielding sleeve and the upper shell, 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 along the radial direction of the outer peripheral wall of the upper shell and a second flange extending along the vertical direction of the inner side 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 side wall of the annular ring, a first accommodating space is formed by the first flange, the second flange and the first groove in a surrounding mode, a first sealing ring is arranged in the first accommodating space, and the first sealing ring is arranged to avoid a gap between the upper shell and the shielding sleeve and infirm connection between the upper shell and the.

In order to further improve the firm in connection nature of housing and inferior valve, set up the second recess that extends to the L type of 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 both sides wall of second recess supports respectively on first order step and third level step to make second recess and second level step enclose synthetic second accommodation space, this second accommodation space has held the second sealing washer, and setting up of second sealing washer has avoided having the clearance between inferior valve and the housing, and the two is connected insecurely, prevents that the medium from spilling from the clearance.

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

In order to prevent the fixed shaft from rotating around the axis of the fixed shaft, third sealing rings for preventing the fixed shaft from rotating are arranged between the first mounting groove and the fixed shaft and between the second mounting groove and the fixed shaft, and the third sealing rings play a role in stopping rotation of the fixed shaft.

In order to prevent the third sealing ring from being extruded and deformed, a bulge which extends downwards and can be abutted against the upper end surface of the fixed shaft is formed in the second mounting groove.

Compared with the prior art, the utility model has the advantages that: the utility model has the advantages that the first mounting column is formed on the lower shell, the second mounting column is formed on the shielding sleeve, and compared with the mode that the first mounting column is separately designed on the lower shell and the second mounting column is separately designed on the shielding sleeve, after the shielding sleeve and the lower shell are assembled, the coaxiality of the first mounting column and the second mounting column is good; the utility model is also provided with a first mounting hole, a second mounting hole and a third mounting hole in a matching way, the three mounting holes not only play a role in connecting the upper shell, the lower shell and the shielding sleeve, but also can improve the coaxiality of the first mounting column and the second mounting column, because under the condition of ensuring the processing precision of the upper shell, the lower shell and the shielding sleeve, as long as the first mounting hole, the second mounting hole and the third mounting hole are aligned, the axes of the first mounting column and the second mounting column are superposed, thereby ensuring that the fixed shaft is assembled in place; and the arrangement of the first mounting hole, the second mounting hole and the third mounting hole can also ensure that the first mounting column and the second mounting column are quickly aligned, and the relative positions among the upper shell, the lower shell and the shielding sleeve do not need to be continuously adjusted, because the axes of the first mounting column and the second mounting column are overlapped under the condition that the first mounting hole, the second mounting hole and the third mounting hole correspond to each other.

Drawings

Fig. 1 is a partial 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 of the shielding case and the connecting socket in fig. 3;

fig. 7 is a schematic structural view in another direction of fig. 6.

Detailed Description

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

As shown in fig. 1 to 7, the shield type booster pump with precise assembly positioning of the preferred embodiment includes an upper casing 1, a lower casing 2, a shielding sleeve 3 and a fixing shaft 4, the upper casing 1 is located above the lower casing 2, 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 the lower opening end of the upper casing 1, a positioning block 14 extending downwards is arranged on the top wall of the upper casing 1, and a positioning groove 32 capable of accommodating the positioning block 14 is arranged on the top wall of the shielding sleeve 3.

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, that is, each of the first connection holes 511 corresponds to one of the second connection holes 111 and one of the third connection holes 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, the bolt is inserted into the first connection hole 511, the second connection hole 111, and the third connection hole 22, and then the coupling of the shielding case 3 with the upper case 1 and the lower case 2 is achieved by the nut locking.

The lower part of the upper shell 1 is abutted against the annular ring 53, and a first sealing ring 61 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 side 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 side 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 61.

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 and is equipped with second sealing washer 62 between the two, set up the second recess 534 that extends to the L type of annular ring 53 terminal surface down 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 the inferior valve 2, the both sides wall of second recess 534 supports 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 62.

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.

Inferior valve 2 goes up the shaping and has the first erection column 21 of upward extension, first mounting groove 211 has been seted up on first erection column 21, the shaping has downwardly extending's second erection column 31 on the roof of housing 3, second mounting groove 311 has been seted up on the second erection column 31, the both ends of fixed axle 4 are installed respectively in first mounting groove 211 and second mounting groove 311, the cover is equipped with the bearing from inside to outside in proper order on the fixed axle 4, impeller and rotor, bearing and rotor all are located housing 3, the lower part of impeller stretches into in inferior valve 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 a protrusion 212 which extends downwards and can be abutted against the upper end surface of the fixed shaft 4 is formed in the second mounting groove 311.

Claims

1. A shielding type booster pump with accurate assembly positioning comprises an upper shell (1), a lower shell (2), a shielding sleeve (3) and a fixed shaft (4), wherein the upper shell (1) is positioned above the lower shell (2), and the shielding sleeve (3) is positioned in the upper shell (1);

the method is characterized in that: a first mounting column (21) extending upwards is formed on the lower shell (2), a first mounting groove (211) is formed in the first mounting column (21), a second mounting column (31) extending downwards is formed on the top wall of the shielding sleeve (3), a second mounting groove (311) is formed in the second mounting column (31), and two ends of the fixing shaft (4) are respectively mounted in the first mounting groove (211) and the second mounting groove (311);

shield sleeve (3) lower part shaping has and is located connecting seat (5) between epitheca (1) and inferior valve (2) by its periphery is outside to be extended, first connecting hole (511) have been seted up on connecting seat (5), second connecting hole (111) that correspond with first connecting hole (511) have been seted up on epitheca (1), third connecting hole (22) that correspond with first connecting hole (511) have been seted up on inferior valve (2), first connecting hole (511), second connecting hole (111) and third connecting hole (22) link to each other through fastener (7).

2. The shield type booster pump with accurate assembling positioning as claimed in claim 1, 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, wherein each first connecting part (51) is provided with a first connecting hole (511), the upper shell (1) is in a cylindrical shape with an open lower part, the lower end of the upper shell is arranged on the annular body (50), at least two second connecting parts (11) which are in one-to-one correspondence with the first connecting parts (51) are formed on the outer circumferential wall of the upper shell (1) along the circumferential direction, each second connecting hole (111) is formed in each second connecting part (11), and at least two third connecting holes (22) are formed and correspond to the first connecting holes (511) one to one.

3. The accurately assembled and positioned shielding type booster pump as claimed in claim 2, wherein: the annular body (50) comprises an extending portion (52) extending outwards along the periphery of the shielding sleeve (3) in the radial direction and an annular ring (53) extending vertically from the periphery of the extending portion (52), a first connecting portion (51) is formed on the periphery of the annular ring (53), the upper shell (1) and the lower shell (2) are respectively in contact with the upper end and the lower end of the annular ring (53), a first limiting block (531) extending upwards is arranged on the upper end face of the annular ring (53), and a first limiting groove (121) in limiting fit with the first limiting block (531) is formed in the upper shell (1).

4. The shield type booster pump with accurate assembling positioning as claimed in claim 3, wherein: be equipped with radial outside extension's second stopper (532) on the periphery wall of annular ring (53), lower casing (2) up end seted up with second stopper (532) spacing complex second spacing groove (23).

5. The shield type booster pump with accurate assembling positioning as claimed in claim 3, 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 radially along the outer peripheral wall of the upper shell and a second flange (13) extending vertically along the inner peripheral wall of the upper shell, the second connecting portion (11) 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), a first accommodating space (a) is defined by the first flange (12), the second flange (13) and the first groove (533), and a first sealing ring (61) is contained in the first accommodating space (a).

6. The shield type booster pump with accurate assembling positioning as claimed in claim 3, 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), the both sides wall of second recess (534) supports 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), second sealing washer (62) have been put in this second accommodation space (b).

7. The shield type booster pump with accurate assembling positioning as claimed in 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).

8. The shield type booster pump with accurate assembling positioning as claimed in claim 1, wherein: and 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).

9. The shield type booster pump with accurate assembling positioning as claimed in claim 8, wherein: and a bulge (312) which extends downwards and can be abutted against the upper end surface of the fixed shaft (4) is formed in the second mounting groove (311).