Washing motor pump

Abstract

The utility model belongs to the technical field of washing pumps, and particularly relates to a washing motor pump which comprises a main shell with two water outlet channels and a driving motor, the output end of the driving motor extends into a centrifugal chamber of the main shell and is sleeved with a centrifugal impeller, and the water outlet chamber of the main shell is divided into a first water outlet cavity and a second water outlet cavity through a valve element membrane. The centrifugal chamber is provided with a first centrifugal channel and a second centrifugal channel, the inner end of the water outlet channel extends inwards into the corresponding water outlet cavity to form an extension part, the outer ring wall of the extension part is a transition conical surface, and the valve element film is pressed to deform and can abut against the transition conical surface. The water outlet valve is simple in structure, reasonable in design and low in cost, on the basis of an existing structure, the sealing matching area between the valve element film and the corresponding end opening of the water outlet channel is increased through the transition conical face, the effect that water liquid in the corresponding water outlet cavity is pressed and reversely acts is effectively counteracted, and the service life of the water outlet valve is prolonged. Therefore, in actual use, one water outlet channel can be firmly blocked by the valve element film.

Description

Technical field:

[0001] The utility model belongs to the technical field of washing pumps, in particular to a washing motor pump. Background technology:

[0002] The existing Chinese utility model patent (grant announcement number CN205503476U) discloses a bidirectional washing pump, which includes a motor fixed in an outer cover, an impeller fixed on the output shaft of the motor, a pump cover fixed at the bottom of the outer cover and sealing the impeller, a water outlet chamber connected to the pump cover, and an end cover component fixed at the top of the outer cover and sealing the motor; the water outlet chamber is formed by docking a left water outlet chamber and a right water outlet chamber, and the left water outlet chamber and the right water outlet chamber are separated by a valve plate; the left water outlet chamber and the right water outlet chamber are connected to the pump chamber through a left centrifugal port and a right centrifugal port fixed on the pump cover. That is, the impeller is driven by the motor to rotate forward or reversely, so that the water can be centrifugally thrown into the left centrifugal port or the right centrifugal port, and then the water pressure of the water in the left water outlet chamber or the right water outlet chamber can push the valve plate to block the water outlet port of the other water outlet chamber, so as to achieve the purpose of one-way water discharge.

[0003] However, when the valve plate rests against the water outlet end face of the corresponding water outlet chamber under the action of water pressure, the water in the water outlet chamber will be pressurized and react on the valve plate, causing the valve plate to deform in the opposite direction, thereby causing one of the two water outlet ends of the bidirectional washing pump to outlet water while the other end has a slight leak. Summary of the invention:

[0004] The purpose of the utility model is to provide a washing motor pump, which, based on the existing structure, uses a transition cone surface to increase the sealing matching area between the valve core membrane and the corresponding port of the water outlet channel, so as to effectively offset the effect of the reverse pressure effect of the water in the corresponding water outlet cavity.

[0005] The utility model is achieved in this way:

[0006] A washing motor pump comprises a main shell with two water outlet channels, and a driving motor arranged in the main shell, wherein the output end of the driving motor extends into the centrifugal chamber of the main shell and is sleeved with a centrifugal impeller, the water outlet chamber of the main shell is divided into a first water outlet chamber and a second water outlet chamber by a valve core membrane, the inner ports of the two water outlet channels are relatively distributed and respectively arranged on the opposite end surfaces of the first water outlet chamber and the second water outlet chamber, the centrifugal chamber is provided with a first centrifugal channel and a second centrifugal channel respectively connected to the first water outlet chamber and the second water outlet chamber, the inner end of the water outlet channel extends inwardly into the corresponding water outlet chamber to form an extension portion, the outer annular wall of the extension portion is a transition cone surface whose outer diameter gradually increases from the inside to the outside along its axial direction, the valve core membrane is deformed under pressure and can abut against the transition cone surface.

[0007] In the above-mentioned washing motor pump, the taper of the transition cone surface is greater than or equal to 10°.

[0008] In the above-mentioned washing motor pump, the end surface of the corresponding water outlet cavity connected to the transition cone surface and its side wall surface are connected via an arc transition.

[0009] In the above-mentioned washing motor pump, the main shell includes a pump body and a pump cover arranged on the lower end surface of the pump body, the water outlet chamber and the centrifugal chamber are formed between the pump body and the pump cover, the valve core membrane is arranged horizontally to form a first water outlet chamber and a second water outlet chamber which are relatively distributed up and down, the two water outlet channels are respectively arranged on the pump body and the pump cover, and the inner ports of the two water outlet channels are relatively distributed up and down, and the first centrifugal channel and the second centrifugal channel are distributed up and down and are respectively arranged on the pump body and the pump cover.

[0010] In the above-mentioned washing motor pump, the pump body and the pump cover are provided with a centrifugal groove and a water outlet groove which are located opposite to each other in upper and lower positions, the centrifugal chamber is formed between the two centrifugal grooves, the water outlet chamber is formed between the two water outlet grooves, and the valve core membrane is clamped and fixed between the pump body and the pump cover.

[0011] In the above-mentioned washing motor pump, the lower end surface of the pump body is provided with a first centrifugal through groove connecting the centrifugal groove and the water outlet groove along the tangential direction of the forward rotation of the centrifugal impeller, and the upper end surface of the pump cover is provided with a second centrifugal through groove connecting the centrifugal groove and the water outlet groove along the tangential direction of the reverse rotation of the centrifugal impeller. The first centrifugal channel is formed between the first centrifugal through groove and the upper end surface of the pump cover, and the second centrifugal channel is formed between the second centrifugal through groove and the lower end surface of the pump body.

[0012] The outstanding advantages of the utility model compared with the prior art are:

[0013] The utility model has a simple structure, reasonable design and low cost. On the basis of the existing structure, the sealing matching area between the valve core membrane and the corresponding port of the water outlet channel is increased by means of a transition cone surface, so as to effectively offset the effect of the reverse pressure of the water in the corresponding water outlet cavity, thereby ensuring that in actual use, one of the water outlet channels can be firmly blocked by the valve core membrane. Description of the drawings:

[0014] Figure 1 It is an overall stereogram of the utility model;

[0015] Figure 2 It is an overall cross-sectional view of the utility model;

[0016] Figure 3 The explosion between the pump body, valve core membrane and pump cover of the utility model Figure 1 ;

[0017] Figure 4 The explosion between the pump body, valve core membrane and pump cover of the utility model Figure 2 .

[0018] In the figure: 1. water outlet channel; 2. centrifugal chamber; 3. centrifugal impeller; 4. valve core membrane; 5. first water outlet chamber; 6. second water outlet chamber; 7. extension portion; 8. transition cone; 9. pump body; 10. pump cover; 11. centrifugal groove; 12. water outlet groove; 13. first centrifugal through groove; 14. second centrifugal through groove; 15. water inlet channel. Specific implementation method:

[0019] The present invention is further described below with reference to specific embodiments. Figure 1 —4:

[0020] A washing motor pump comprises a main housing with two water outlet channels 1, and a driving motor arranged in the main housing, wherein the output end of the driving motor extends into a centrifugal chamber 2 of the main housing and is sleeved with a centrifugal impeller 3, the water outlet chamber of the main housing is divided into a first water outlet chamber 5 and a second water outlet chamber 6 by a valve core membrane 4, the inner ports of the two water outlet channels 1 are relatively distributed and respectively arranged on the opposite end surfaces of the first water outlet chamber 5 and the second water outlet chamber 6, the centrifugal chamber 2 is provided with a first centrifugal channel and a second centrifugal channel respectively connected to the first water outlet chamber 5 and the second water outlet chamber 6, the inner end of the water outlet channel 1 extends inwardly into the corresponding water outlet chamber to form an extension portion 7, the outer annular wall of the extension portion 7 is a transition cone surface 8 whose outer diameter gradually increases from the inside to the outside along its axial direction, the valve core membrane 4 is deformed under pressure and can abut against the transition cone surface 8. Among them, the same as the prior art structure, a water inlet channel 15 connected to the outside is opened in the centrifugal chamber 2, and the centrifugal impeller 3 is driven by a driving motor to rotate forward or reverse, so that the water can enter the first water outlet chamber 5 or the second water outlet chamber 6 through the first centrifugal channel or the second centrifugal channel, and under the action of the water pressure of the water, the valve core membrane 4 is pushed to deform and cover the inner port of the corresponding water outlet channel 1, and until the valve core membrane 4 is abutted against the transition cone surface 8, so that even if the water in the water outlet chamber is pressurized to react on the valve core membrane 4, it only changes the contact area between the valve core membrane 4 and the transition cone surface 8, and does not affect the valve core membrane 4 The blocking of the inner port of the water outlet channel 1.

[0021] The utility model has a simple structure, reasonable design and low cost. On the basis of the existing structure, the sealing matching area between the valve core membrane 4 and the corresponding port of the water outlet channel 1 is increased by means of the transition cone 8, so as to effectively offset the effect of the reverse pressure of the water in the corresponding water outlet cavity, thereby ensuring that in actual use, one of the water outlet channels 1 can be firmly blocked by the valve core membrane 4.

[0022] In order to ensure that the valve core membrane 4 can effectively and widely rest against the transition cone surface 8 , the taper of the transition cone surface 8 is greater than or equal to 10°.

[0023] Furthermore, in order to guide the flow direction of the water in the water outlet cavity, the end surface of the corresponding water outlet cavity connected to the transition cone surface 8 is connected to its side wall surface through an arc transition.

[0024] Considering that the existing technical structure still has the problems of complex structure and large number of parts, in order to simplify the structural coordination and reduce the number of components, in the present utility model, the main housing includes a pump body 9 and a pump cover 10 which is arranged on the lower end surface of the pump body 9, the water outlet chamber and the centrifugal chamber 2 are formed between the pump body 9 and the pump cover 10, the valve core membrane 4 is arranged horizontally to form a first water outlet chamber 5 and a second water outlet chamber 6 which are relatively distributed up and down, two water outlet channels 1 are respectively arranged on the pump body 9 and the pump cover 10, and the inner ports of the two water outlet channels 1 are relatively distributed up and down, and the first centrifugal channel and the second centrifugal channel are distributed up and down and are respectively arranged on the pump body 9 and the pump cover 10. That is, the present utility model reasonably optimizes the product structure, and the water outlet chamber, the centrifugal chamber 2 and the two centrifugal channels can be formed by the coordination of the pump body 9 and the pump cover 10 alone.

[0025] Furthermore, the specific formation structure of the centrifugal chamber 2 and the water outlet chamber is as follows: the pump body 9 and the pump cover 10 are both provided with a centrifugal groove 11 and a water outlet groove 12 which are located opposite to each other in upper and lower positions, the centrifugal chamber 2 is formed between the two centrifugal grooves 11, the water outlet chamber is formed between the two water outlet grooves 12, and the valve core membrane 4 is clamped and fixed between the pump body 9 and the pump cover 10.

[0026] Moreover, in the present embodiment, the specific formation structure of the two centrifugal channels is as follows: a first centrifugal through groove 13 connecting the centrifugal groove 11 and the water outlet groove 12 is opened on the lower end surface of the pump body 9 along the tangential direction of the forward rotation of the centrifugal impeller 3, and a second centrifugal through groove 14 connecting the centrifugal groove 11 and the water outlet groove 12 is opened on the upper end surface of the pump cover 10 along the tangential direction of the reverse rotation of the centrifugal impeller 3. The first centrifugal channel is formed between the first centrifugal through groove 13 and the upper end surface of the pump cover 10, and the second centrifugal channel is formed between the second centrifugal through groove 14 and the lower end surface of the pump body 9.

[0027] The above embodiment is only one of the preferred embodiments of the present utility model, and is not intended to limit the scope of implementation of the present utility model. Therefore, any equivalent changes made based on the shape, structure, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A washing motor pump, comprising a main housing with two water outlet channels (1), and a driving motor arranged in the main housing, wherein the output end of the driving motor extends into a centrifugal chamber (2) of the main housing and is sleeved with a centrifugal impeller (3), the water outlet chamber of the main housing is divided into a first water outlet chamber (5) and a second water outlet chamber (6) by a valve core membrane (4), the inner ports of the two water outlet channels (1) are relatively distributed and respectively arranged on the opposite end surfaces of the first water outlet chamber (5) and the second water outlet chamber (6), the centrifugal chamber (2) is provided with a first centrifugal channel and a second centrifugal channel respectively connected to the first water outlet chamber (5) and the second water outlet chamber (6), characterized in that: The inner end of the water outlet channel (1) extends inwardly into the corresponding water outlet cavity to form an extension portion (7), and the outer ring wall of the extension portion (7) is a transition cone surface (8) whose outer diameter gradually increases from the inside to the outside along its axial direction, and the valve core membrane (4) is deformed under pressure and can abut against the transition cone surface (8).

2. A washing motor pump according to claim 1, characterized in that: The taper of the transition cone surface (8) is greater than or equal to 10°.

3. A washing motor pump according to claim 1, characterized in that: The end surface of the corresponding water outlet cavity connected to the transition cone surface (8) and its side wall surface are connected via an arc transition.

4. A washing motor pump according to claim 1, 2 or 3, characterized in that: The main housing comprises a pump body (9) and a pump cover (10) arranged on the lower end surface of the pump body (9); the water outlet chamber and the centrifugal chamber (2) are formed between the pump body (9) and the pump cover (10); the valve core membrane (4) is arranged transversely to form a first water outlet chamber (5) and a second water outlet chamber (6) which are relatively distributed up and down; two water outlet channels (1) are respectively arranged on the pump body (9) and the pump cover (10), and the inner ports of the two water outlet channels (1) are relatively distributed up and down; the first centrifugal channel and the second centrifugal channel are distributed up and down and are respectively arranged on the pump body (9) and the pump cover (10).

5. A washing motor pump according to claim 4, characterized in that: The pump body (9) and the pump cover (10) are both provided with a centrifugal groove (11) and a water outlet groove (12) which are located opposite to each other in upper and lower positions; the centrifugal chamber (2) is formed between the two centrifugal grooves (11); the water outlet chamber is formed between the two water outlet grooves (12); and the valve core membrane (4) is clamped and fixed between the pump body (9) and the pump cover (10).

6. A washing motor pump according to claim 5, characterized in that: The lower end surface of the pump body (9) is provided with a first centrifugal through groove (13) connecting the centrifugal groove (11) and the water outlet groove (12) along the tangential direction of the forward rotation of the centrifugal impeller (3); the upper end surface of the pump cover (10) is provided with a second centrifugal through groove (14) connecting the centrifugal groove (11) and the water outlet groove (12) along the tangential direction of the reverse rotation of the centrifugal impeller (3); the first centrifugal channel is formed between the first centrifugal through groove (13) and the upper end surface of the pump cover (10); and the second centrifugal channel is formed between the second centrifugal through groove (14) and the lower end surface of the pump body (9).

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