CN-224214382-U - Constant pressure booster pump

CN224214382UCN 224214382 UCN224214382 UCN 224214382UCN-224214382-U

Abstract

The utility model belongs to the technical field of water pumps, in particular to a constant-pressure booster pump, which comprises a casing, a pump head and a motor main body, wherein the pump head and the motor main body are arranged in the casing, the motor main body comprises a motor casing seat and a shielding sleeve arranged in the motor casing seat, a drainage guide groove is formed in the inner wall surface of the motor casing seat, a drainage channel with an outer port communicated with an inner cavity of the casing is formed in the bottom surface of the drainage guide groove, a low-lying area is formed in the inner bottom surface of the casing, and a drainage through hole communicated with the outside is formed in the low-lying area. The utility model has simple structure, reasonable design and low cost, and on the basis of the existing structure, the condensed water produced at the shielding sleeve can be discharged outside the motor main body along the drainage guide groove and the drainage channel by designing the drainage guide groove and the drainage channel, and finally is completely discharged outside the pump body through the drainage through hole at the bottom low-lying area of the casing.

Inventors

Wang Lvjun
CHEN HAO
GUAN JIANG
WANG CHENYAO
LIU XINGYUN
WANG ZONGJIE
LI BAIWANG

Assignees

浙江大元泵业股份有限公司

Dates

Publication Date: 20260508
Application Date: 20250509

Claims (7)

1. The constant-pressure booster pump comprises a casing (1), a pump head (2) and a motor main body, wherein the pump head (2) and the motor main body are arranged in the casing (1), the motor main body comprises a motor casing seat (3) and a shielding sleeve arranged in the motor casing seat (3), and the constant-pressure booster pump is characterized in that a drainage guide groove (4) is formed in the inner wall surface of the motor casing seat (3), a drainage channel (5) with an outer port communicated with the inner cavity of the casing (1) is formed in the bottom surface of the drainage guide groove (4), a low-lying area (6) is formed in the inner bottom surface of the casing (1), and a drainage through hole (7) communicated with the outside is formed in the low-lying area (6).
2. The constant pressure booster pump of claim 1, wherein the motor casing (3) is of a sleeve structure with one end being open and arranged horizontally on one side, the drainage guide groove (4) is arranged at the bottom of the motor casing (3) along the axial direction of the motor casing (3), the end close to the open side of the motor casing (3) is arranged in a low-end and high-end inclined mode, and the inner end opening of the drainage channel (5) is arranged on the end, close to the open side of the motor casing (3), of the drainage guide groove (4).
3. The constant pressure booster pump of claim 2, wherein the end face of the opening end of the motor casing base (3) is provided with an annular assembly groove (8) encircling the periphery of the opening, the water drainage channel (5) comprises an inner water drainage hole (9) communicated with the water drainage guide groove (4) and the annular assembly groove (8), the annular assembly groove (8) positioned at two sides of the inner water drainage hole (9) is provided with outer water drainage holes (10) communicated with the inner cavity of the casing (1), and the wall surface of the annular assembly groove (8) between the two outer water drainage holes (10) is upwards arched to form a guide convex surface (11) for guiding water to flow to the corresponding side outer water drainage holes (10) respectively.
4. A constant pressure booster pump as defined in claim 1, wherein an inner bottom surface of the casing (1) located right under the outer port of the drain passage (5) is upwardly arched to form a plateau region (12), and the low-lying region (6) is formed between the plateau region (12) and an inner wall surface of the casing (1).
5. The constant pressure booster pump of claim 1, wherein an electronic component cavity is arranged on the casing (1) at the rear side of the motor casing (3), a control circuit board (13) and a radiator are arranged in the electronic component cavity, and a control lead terminal (14) electrically connected with the control circuit board (13) is connected to the top of the motor casing (3).
6. The constant pressure booster pump of claim 5, wherein the radiator comprises a radiating base arranged vertically and radiating fins (15) arranged on the rear end face of the radiating base, and a radiating grid (16) corresponding to the radiating fins (15) is arranged on the rear end face of the casing (1).
7. A constant pressure booster pump as defined in claim 1, wherein the pump head (2) is provided with a booster cavity, a rotor shaft (17) of the motor main body extends into the pump head (2) to the booster cavity and is sleeved with an impeller, and the rotor shaft (17) is in static sealing fit with a motor end cover (19) covered on the motor casing (3) through a ceramic bearing (18).

Description

Constant pressure booster pump Technical field: The utility model belongs to the technical field of water pumps, and particularly relates to a constant-pressure booster pump. The background technology is as follows: In the operation process of the canned motor pump, the water temperature in the interior of the canned motor sleeve is lower than the peripheral ambient temperature, so that condensed water can be generated on the outer surface of the canned motor sleeve in the motor cabinet, and the condensed water gradually converges in a structural gap between the motor cabinet and the canned motor sleeve, and is easy to cause motor abnormality and failure after excessive accumulation. The invention comprises the following steps: The utility model aims to provide a constant-pressure booster pump which enables condensed water produced at a shielding sleeve to be effectively discharged outwards by means of a drainage guide groove and a drainage channel. The utility model is realized in the following way: The utility model provides a constant voltage booster pump, includes the casing to and set up pump head and the motor main part in the casing, the motor main part is including motor casing seat and the shielding cover of setting in motor casing seat, the drainage guide way has been seted up to the internal face of motor casing seat, has seted up the drainage channel of outer port and casing inner chamber intercommunication on the groove bottom surface of drainage guide way, and the interior bottom surface of casing has the low-lying district, has seted up the drainage through-hole with external intercommunication on the low-lying district. In the above-mentioned constant pressure booster pump, the motor casing seat is the sleeve structure that one end was the opening and lie on one side and set up, the drainage guide way sets up in the bottom of motor casing seat along the axial of motor casing seat, and it is being close to the low, the high slope setting of the other end of the tip of motor casing seat opening side, the inner port of drainage passageway is seted up on the tip that the drainage guide way is close to motor casing seat opening side. In the above-mentioned constant pressure booster pump, the annular assembly groove around its opening periphery is offered to the open end terminal surface of motor casing seat, the drainage channel is including the interior wash port of intercommunication drainage guide way and annular assembly groove, has offered the outer wash port that is used for with the casing inner chamber intercommunication on the annular assembly groove 8 that is located interior wash port both sides, and the annular assembly cell wall between two outer wash ports upwards arches in order to form the guide convex surface that is used for guiding the water liquid to flow to corresponding side outer wash port respectively about. In the constant pressure booster pump, the inner bottom surface of the casing, which is positioned right below the outer port of the drainage channel, is upwardly arched to form a high-rise area, and the low-lying area is formed between the high-rise area and the inner wall surface of the casing. In the above-mentioned constant pressure booster pump, be provided with the electronic component chamber on the casing of motor casing rear side, the electronic component intracavity is provided with control circuit board and radiator, and the top of motor casing is connected with the control lead terminal that is used for with control circuit board electric connection. In the above-mentioned constant pressure booster pump, the radiator includes a heat dissipation base disposed vertically and a heat dissipation fin disposed on a rear end surface of the heat dissipation base, and a heat dissipation grille disposed on a rear end surface of the casing and corresponding to the heat dissipation fin. In the constant-pressure booster pump, the pump head is provided with the booster cavity, the rotor shaft of the motor main body stretches into the pump head to the booster cavity and is sleeved with the impeller, and the rotor shaft is in static seal fit with the motor end cover covered on the motor shell seat through the ceramic bearing. Compared with the prior art, the utility model has the outstanding advantages that: The utility model has simple structure, reasonable design and low cost, and on the basis of the existing structure, the condensed water produced at the shielding sleeve can be discharged outside the motor main body along the drainage guide groove and the drainage channel by designing the drainage guide groove and the drainage channel, and finally is completely discharged outside the pump body through the drainage through hole at the bottom low-lying area of the casing. Description of the drawings: FIG. 1 is a cross-sectional view of the complete machine of the present utility model; FIG. 2 is a perspective view of a motor housing base of the present utility model; Fig.