CN210218146U - Direct-current permanent magnet shielding type booster pump with water flow control starting and forced starting - Google Patents

Abstract

The utility model relates to a direct current permanent magnetism shielding formula booster pump that rivers control starts and force starts, including epitheca, inferior valve, motor, housing, body, be used for the response body in fluid flow and control motor open the rivers switch module that stops and can force the starting switch of starting motor after artificial triggering, the inferior valve links to each other with the epitheca lower part, has inlet, cavity and liquid outlet, and the motor includes stator and rotor, is equipped with a plurality of stators of top-down superpose in proper order between epitheca inner wall and the housing outer wall, the rotor be located the housing and with the housing between have the clearance, the body with the inlet or the liquid outlet of inferior valve are linked together. Through rivers switch module and the mutual cooperation of forcing the starting switch, under the condition that discharge is less, the water pressure that the running water supplied water to the pump is not enough, artificially trigger and force the starting switch for the motor is forced to start under forcing the starting switch's effect, has solved when rivers switch module is out of work, and the problem that the motor can't be started.

Description

Direct-current permanent magnet shielding type booster pump with water flow control starting and forced starting

Technical Field

The utility model relates to a shielded booster pump, concretely relates to direct current permanent magnetism shielded booster pump that rivers control starts and forces start-up.

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.

In most types of water pumps, a water flow switch is mounted, but in the case where the water pressure of the tap water supplied to the pump is insufficient or the water flow rate is small, the water flow switch is not operated because the impact force of the water flow is not large enough.

The current direct current permanent magnet canned motor pump is not provided with a water flow switch and a standby structure which can start the motor when the water flow switch does not work.

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 force the rivers control that makes the motor start to start and force the direct current permanent magnetism shielding formula booster pump that starts when the water flow switch is out of work.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: a DC permanent-magnet shielding type booster pump with water flow control and forced start 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;

a motor including a stator and a rotor;

the shielding sleeve is positioned in the upper shell, 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, and the rotor is positioned in the shielding sleeve and has a gap with the shielding sleeve;

it is characterized by also comprising

The pipe body is communicated with the liquid inlet or the liquid outlet of the lower shell;

the water flow switch assembly is arranged in the pipe body and used for sensing the flow of fluid in the pipe body to control the start and stop of the motor;

the forced starting switch can forcibly start the motor after being artificially triggered.

The water flow switch assembly may have various structures, and preferably, the water flow switch assembly comprises

The valve core extends along the axial direction of the pipe body and can move axially relative to the pipe body;

the elastic piece acts on the valve core and enables the valve core to keep the trend of closing the liquid inlet or the liquid outlet of the lower shell;

and the switch can control the starting and stopping of the motor along with the movement of the valve core.

Preferably, the switch comprises a magnetic part arranged on the valve core and a trigger switch arranged in the side wall of the pipe body, and the magnetic part is matched with the trigger switch to control the motor to start and stop; the switch can also be a microswitch or a photoelectric switch and is triggered by the valve core.

In order to facilitate the installation of the water flow switch assembly in the shielding pump, the pipe body can be detachably inserted in the lower shell, so that the water flow switch assembly can be connected with the pump body after being assembled in the pipe body, and the water flow switch assembly is convenient to detach and maintain if the water flow switch assembly fails; and a third sealing ring is arranged between the pipe body and the lower shell, so that the pipe body and the lower shell are tightly connected, and water leakage is prevented.

In order to further prevent the pipe body and the lower shell from being connected untight to cause water leakage, a sleeve communicated with a liquid inlet or a liquid outlet of the lower shell is arranged in the lower shell, a through hole capable of being opened and closed by a valve core is formed in the sleeve, an interval for inserting the end part of the pipe body into the sleeve is formed between the sleeve and the inner wall of the lower shell, the pipe body is limited between the inner wall of the lower shell and the sleeve, and relative displacement between the pipe body and the lower shell is prevented.

In order to further prevent the water leakage caused by the untight connection between the pipe body and the lower shell, a fourth sealing ring is arranged between the sleeve and the pipe body.

In order to facilitate a user to touch the forced start switch to open the forced start switch, the forced start switch is arranged above the upper shell.

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, each first connecting part is provided with a first connecting hole, 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, each second connecting part is provided with a second connecting hole, at least two third connecting holes in one-to-one correspondence with the first connecting holes are formed on 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.

Compared with the prior art, the utility model has the advantages that: the utility model discloses a set up rivers switch module and force starting switch, the two mutually support, under the circumstances that discharge is great, the water pressure that the running water supplied water to the pump is enough, the case removed under the rivers effect, trigger switch is triggered by the magnetic part on the case for the motor starts, because after the motor starts, the power that rivers pushed the case continuously exists, guarantees that trigger switch is in the on-state all the time, makes the motor be in normal running state all the time; when the water faucet is closed, the valve core is reset, the trigger switch controls the motor to be closed, and the motor is shut down when a circuit is disconnected; under the condition that the water flow is small and the water pressure of tap water for supplying water to the pump is insufficient, the forced starting switch is manually triggered, so that the motor is forced to be started under the action of the forced starting switch, and the problem that the motor cannot be started in the state that the water flow switch assembly does not work is solved.

Drawings

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

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a further exploded view of FIG. 2;

FIG. 4 is a cross-sectional view of FIG. 1;

FIG. 5 is an enlarged view of FIG. 4 at A;

FIG. 6 is a schematic view of the water flow switch assembly of FIG. 5 with the tube removed;

FIG. 7 is a schematic view of the partially exploded structure of FIG. 6;

FIG. 8 is a schematic structural view of the upper case of FIG. 7;

fig. 9 is a structural view of the lower case of fig. 7;

fig. 10 is a schematic structural view in another direction of fig. 9.

Fig. 11 is a schematic structural view of the shielding case and the connecting socket in fig. 7;

fig. 12 is a schematic structural view in another direction of fig. 11.

Detailed Description

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

As shown in fig. 1 to 12, the dc permanent magnet shielded booster pump with water flow control and forced start according to the preferred embodiment includes a pump body and a pipe body 6, the pump body includes an upper casing 1, a lower casing 2, a shielding sleeve 3, a connecting seat 5, a motor and an impeller, 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 the lower part of the upper casing 1, the connecting seat 5 extending outwards from the periphery of the shielding sleeve 3 and located between the upper casing 1 and the lower casing 2 is formed on the lower part of the shielding sleeve 3, and the upper casing 1 and the lower casing 2 are both connected with the connecting seat 5.

The motor comprises a stator 31 and a rotor 32, wherein a plurality of stators 31 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, and the rotor 32 is positioned in the shielding sleeve 3 and has a gap with the shielding sleeve 3.

As shown in fig. 1 to 5, 9 and 10, the lower shell 2 has 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 formed in the circumferential wall of the cavity 2b along the circumferential direction. Inferior valve 2 and body 6 can link to each other with dismantling, is equipped with the sleeve 9 that is linked together with the liquid outlet 2c of inferior valve 2 in the inferior valve 2, is equipped with the through-hole 91 that can be opened and close by case 71 on the sleeve 9, has the tip that supplies body 6 between the inner wall of sleeve 9 and inferior valve 2 and inserts the interval of locating in, so makes liquid outlet 2c and body 6 be linked together. A third sealing ring A3 is arranged between the outer wall of the pipe body 6 and the inner wall of the lower shell 2, and a fourth sealing ring A4 is arranged between the inner wall of the pipe body 6 and the sleeve 9.

The inside of the pipe body 6 is provided with a water flow switch assembly 7 which can sense the flow of fluid in the pipe body and control the start and stop of a motor of the canned motor pump, the top of the upper shell 1 is provided with a forced starting switch 8, the forced starting switch 8 is arranged above the upper shell 1, the top of the upper shell 1 is provided with a mounting plate, and the forced starting switch 8 is arranged on the mounting plate. The forced start switch 8 is electrically connected with the circuit board, and the connection of the forced start switch 8 with the circuit board is the prior art and is not described herein again. In this embodiment, the valve core 71 extends along the axial direction of the tube body 6 and can move axially relative to the tube body 6, a central portion 751 and at least two radiation strips 752 which radiate radially outward from the periphery of the central portion 751 and are connected with the inner wall of the tube body 6 are arranged in the tube body 6, two adjacent radiation strips 752 are arranged at intervals along the central portion 751 so that water flows through, a guide hole 753 for guiding the moving track of the valve core 71 is formed in the central portion 751, a first end of the valve core 71 faces the liquid outlet 2c of the lower shell 2, a second end of the valve core 71 movably penetrates through the guide hole 753, and the valve core 71 keeps moving towards the liquid outlet 2c of the lower shell 2 and closing the liquid outlet 2c under the action of the elastic member 72.

A flange 76 is radially formed on the valve element 71 near the first end thereof, and the elastic member 72 is a spring, and both ends thereof respectively abut against the flange 76 and the radiation bar 752.

The switch includes a magnetic member 73 disposed on the valve element 71 and a trigger switch 74 disposed in a side wall of the tube body 6, referring to fig. 2, a receiving groove 741 for receiving the trigger switch 74 is formed in the side wall of the tube body 6, the magnetic member 73 cooperates with the trigger switch 74 to control the motor to start and stop, the magnetic member 73 is a magnet, and the trigger switch 74 is a reed pipe.

When the first end of the valve element 71 is located in the liquid outlet 2c of the lower shell 2 and closes the liquid outlet 2c, the magnetic element 73 does not sense the trigger switch 74, the trigger switch 74 does not control the motor to work, and when the valve element 71 moves along the flow direction of the water flow under the action of the water flow (i.e., moves away from the liquid outlet 2c of the lower shell 2), the trigger switch 74 senses the magnetic element 73, the trigger switch 74 controls the motor to be always in a starting state.

In this embodiment, along the water flow direction, the pipe body 6 is arranged at the downstream of the lower shell 2, and the water flow switch assembly 7 is positioned in the pipe body 6; of course, the pipe body 6 may be disposed at the upstream of the lower casing 2 so as to communicate with the liquid inlet 2a of the lower casing 2, and the valve element 71 of the water flow switch assembly 7 may close the liquid inlet 2a of the lower casing.

The working principle and the process of the canned boost pump of the embodiment are as follows:

under the conditions of large water flow and enough water pressure of tap water for supplying water to the pump, the valve core 71 moves under the action of the water flow, the trigger switch 74 is triggered by the magnetic part 73 on the valve core 71, the motor is started, and after the motor is started, the force of the water flow pushing the valve core 71 continuously exists, so that the trigger switch 74 is always in a conducting state, and the motor is always in a normal running state; when the water tap is closed, the water pressure in the pump body and the water pressure in the pipe body 6 are balanced, the valve core 71 is reset, the trigger switch 74 controls the motor to be closed, and the motor is disconnected and the circuit is stopped; under the condition that the water flow is small and the water pressure of tap water for supplying water to the pump is insufficient, the forced starting switch 8 is manually triggered, the motor is forced to be started under the action of the forced starting switch 8, the water flow is increased after the motor is started, the water flow pushes the valve core 71 to move, the motor is enabled to keep a normal running state, and the problem that the motor cannot be started in the state that the water flow switch assembly 7 does not work is solved.

As shown in fig. 6 to 12, the connection socket 5 includes an annular body 50 and at least two first connection portions 51, the annular body 50 includes an extension portion 52 extending radially outward along the periphery of the shielding sleeve 3 and an annular ring 53 extending vertically from the periphery of the extension portion 52, the plurality of first connection portions 51 are formed at the periphery of the annular ring 53 at intervals along the circumferential direction, each first connection portion 51 is provided with a first connection hole 511, the outer peripheral wall of the upper shell 1 is formed with at least two second connection portions 11 corresponding to the first connection portions 51 one by one along the circumferential direction, each second connection portion 11 is provided with a second connection hole 111, the lower shell 2 is provided with at least two third connection holes 22 corresponding to the first connection holes 511 one by one along the circumferential direction, each first connection hole 511 corresponds to one second connection hole 111 and one third connection hole 22, the correspondingly arranged first connection hole 511, second connection hole 111 and third connection hole 22 are connected by a fastener 512. The fastening member 512 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, the upper case 1, and the lower case 2 are connected. In addition, a positioning block 14 extending downwards is arranged on the top wall of the upper shell 1, and a positioning groove 35 capable of accommodating the positioning block 14 is arranged on the top wall of the shielding sleeve 3.

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 24c, 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 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 33 on the roof of housing 3, has seted up second mounting groove 331 on the second erection column 33, and the both ends of fixed axle 4 are installed respectively in first mounting groove 211 and second mounting groove 331. The fixed shaft 4 is rotatably sleeved with a bearing 91, an impeller shaft 92 and a rotor 32 which are all positioned in the shielding sleeve 3 from inside to outside in sequence, the lower part of the impeller shaft 92 is connected with impeller blades 93, the impeller blades 93 form an impeller, the impeller blades 93 extend into the cavity 2b and surround the periphery of the first mounting column 21, and a space is reserved between each impeller blade 93 and the first mounting column 21.

Claims (10)

1. A DC permanent-magnet shielding type booster pump with water flow control and forced start 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);

a motor including a stator (31) and a rotor (32);

the shielding sleeve (3) is positioned in the upper shell (1), a plurality of stators (31) 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), and the rotor (32) is positioned in the shielding sleeve (3) and has a gap with the shielding sleeve (3);

it is characterized by also comprising

A pipe body (6) communicated with the liquid inlet (2a) or the liquid outlet (2c) of the lower shell (2);

the water flow switch assembly (7) is arranged in the pipe body (6) and is used for sensing the flow of fluid in the pipe body (6) to control the start and stop of the motor;

and a forced starting switch (8) which can forcibly start the motor after being artificially triggered.

2. The water flow controlled start and forced start direct current permanent magnet shield type booster pump according to claim 1, characterized in that: the water flow switch assembly (7) comprises

A valve core (71) extending along the axial direction of the pipe body (6) and capable of moving axially relative to the pipe body (6);

the elastic piece (72) acts on the valve core (71) and enables the valve core (71) to keep the trend of closing the liquid inlet (2a) or the liquid outlet (2c) of the lower shell (2);

and the switch can control the start and stop of the motor along with the movement of the valve core (71).

3. The direct-current permanent magnet shielding type booster pump with water flow control starting and forced starting according to claim 2, characterized in that: the switch comprises a magnetic part (73) arranged on the valve core (71) and a trigger switch (74) arranged in the side wall of the pipe body (6), and the magnetic part (73) is matched with the trigger switch (74) to control the motor to start and stop.

4. The direct-current permanent magnet shielding type booster pump with water flow control starting and forced starting according to claim 2, characterized in that: the pipe body (6) can be detachably inserted into the lower shell (2), and a third sealing ring (A3) is arranged between the pipe body (6) and the lower shell (2).

5. The direct-current permanent magnet shielded booster pump with water flow control and forced start according to claim 4, characterized in that: the improved valve is characterized in that a sleeve (9) communicated with a liquid inlet (2a) or a liquid outlet (2c) of the lower shell (2) is arranged in the lower shell (2), a through hole (91) capable of being opened and closed by a valve core (71) is formed in the sleeve (9), and an interval for inserting the end part of the pipe body (6) into the sleeve is formed between the sleeve (9) and the inner wall of the lower shell (2).

6. The direct-current permanent magnet shielded booster pump with water flow control and forced start according to claim 5, characterized in that: and a fourth sealing ring (A4) is arranged between the sleeve (9) and the pipe body (6).

7. The water flow controlled start and forced start direct current permanent magnet shield type booster pump according to claim 1, characterized in that: the forced starting switch (8) is arranged above the upper shell (1).

8. The direct-current permanent magnet shielding type booster pump with water flow control starting and forced starting according to any one of claims 1 to 7, characterized in that: 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).

9. The water flow controlled start and forced start direct current permanent magnet shield type booster pump according to claim 8, characterized in that: 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 (512).

10. The direct current permanent magnet shielded booster pump of claim 9, wherein the flow-controlled start and forced start comprises: 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.

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