CN217002412U

CN217002412U - Direct current heating water pump with thermal protection function

Info

Publication number: CN217002412U
Application number: CN202220771615.4U
Authority: CN
Inventors: 边树军; 李会芳; 费利明; 李英杰; 王韬; 唐章俊; 松尾繁; 邵明元
Original assignee: Huzhou Yueqiu Motor Co ltd
Current assignee: Huzhou Yueqiu Motor Co ltd
Priority date: 2022-04-02
Filing date: 2022-04-02
Publication date: 2022-07-19
Anticipated expiration: 2032-04-02

Abstract

The utility model discloses a direct-current heating water pump with a thermal protection function, which comprises a pump cover (1) and a pump body (2) which are connected with each other, wherein the middle part of the pump body (2) is provided with a rotating shaft (3), one end of the rotating shaft (3) is connected with an impeller (4) extending into the pump cover (1), the middle part of the pump cover (1) is connected with a heating sheet (5), an upper heating cavity (6) and a lower heating cavity (7) are respectively formed in the pump cover (1) on two sides of the heating sheet (5), a water passing port (8) communicated with the upper heating cavity (6) and the lower heating cavity (7) is arranged in the middle of the heating sheet (5), a water inlet (9) connected with the pump cover (1) is arranged at the top of the upper heating cavity (6), a water outlet (10) connected with the pump cover (1) is arranged at the side part of the lower heating cavity (7), the impeller (4) is positioned in the lower heating cavity (7) below the water passing port (8). The utility model has the characteristics of high heating efficiency and good working stability.

Description

Direct current heating water pump with thermal protection function

Technical Field

The utility model relates to a heating water pump, in particular to a direct-current heating water pump with a thermal protection function.

Background

The heating water pump is widely applied in the household appliance industry, but the heating method of the heating water pump at present is to place a heating element near a water inlet or a water outlet of the water pump, the heating element heats water when the water flows through the heating element, but the contact area between the conventional heating element and the water flow is relatively small, so that the problem of insufficient heating efficiency can be caused when the size of the heating element is small, and if the whole size of the heating element is increased, the problem of increase of the volume of the water pump can be caused, and great design difficulty exists. In addition, due to the limitation of the size of the internal space of the water pump, the heating element in the existing water pump also has the problem of too close distance with other functional parts in the pump body, so that when the temperature of the heating element is too high, overheating damage of peripheral functional parts is easily caused, and the working stability and the service life of the water pump are influenced. And the existing heating water pump also has no thermal protection function, thereby further reducing the stability and the service life of the water pump.

Therefore, the existing heating water pump has the problems of low heating efficiency and poor working stability.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a direct-current heating water pump with a thermal protection function. It has the characteristics of high heating efficiency and good working stability.

The technical scheme of the utility model is as follows: the utility model provides a direct current heating water pump with heat protect function, includes interconnect's the pump cover and the pump body, and the middle part of the pump body is equipped with the pivot, and the one end of pivot is connected with the impeller that extends to in the pump cover, the middle part of pump cover is connected with the heating plate, forms heating chamber and lower heating chamber in the pump cover of heating plate both sides respectively, and the middle part of heating plate is equipped with the mouth of a river of crossing that feeds through heating chamber and lower heating chamber, and the top of heating chamber is equipped with the water inlet of connecting the pump cover, and the lateral part of lower heating chamber is equipped with the delivery port of connecting the pump cover, the impeller is located the lower heating intracavity of crossing water mouth below, and it has a plurality of guide vanes to distribute on the impeller.

In the direct current heating water pump with the thermal protection function, one side of the pump cover is provided with the electricity connecting groove communicated with the outside, one end of the heating sheet extends into the electricity connecting groove and is provided with the electricity connecting part, the outer side of the electricity connecting part is provided with the wiring terminal, and the lower end of the wiring terminal is mutually inserted with the electricity connecting part.

In the aforementioned direct-current heating water pump with a thermal protection function, the bottom of the electrical connection tank is provided with a heat transfer plate, the heat transfer plate is provided with a thermal protector, the thermal protector and the heating sheet are respectively attached to the upper surface and the lower surface of the heat transfer plate, and one side of the thermal protector is connected with a connection terminal; the middle part of the wiring terminal is provided with a pressing plate, and one side of the pressing plate is attached to the thermal protector.

In the aforesaid direct current heating water pump with heat protect function, the top of the pump body is equipped with inside seal groove and external seal groove respectively, and the inside seal inslot is connected with the shaft seal circle, and the inboard and the pivot of shaft seal circle are laminated each other, and the external seal inslot is connected with the pump cover sealing washer, and the upper end lock of the pump body is connected with the gland, the inboard and the mutual lock of shaft seal circle of gland.

In the direct-current heating water pump with the thermal protection function, one end of the pump cover is buckled and connected with the pump body through the step part; the outer end of the pump cover sealing ring is attached to the step portion, and the step portion and the gland are attached to each other.

In the aforementioned direct current heating water pump with thermal protection function, the clamping plate for fastening the step portion is arranged around the end portion of the pump body.

Compared with the prior art, the utility model has the following characteristics:

(1) according to the utility model, through the structural matching of the upper heating cavity, the lower heating cavity and the heating sheet, after entering from the water inlet, water flow can pass through the heating sheet and then flow to the water outlet, and the heating sheet with the sheet structure can be completely contacted with the water flow in the upper heating cavity and the lower heating cavity simultaneously, so that the heating efficiency of water is effectively improved; the impeller positioned in the lower heating cavity can guide the water flow and ensure the stable flow rate of the water flow; the lower heating cavity arranged between the heating plate and the pump body can effectively increase the spacing distance between the heating plate and the functional element in the pump body, thereby avoiding the overheating damage of the high temperature of the heating plate to the pump body, improving the working stability and prolonging the service life of the water pump;

(2) through the matching connection of the butt-joint electric tank, the wiring terminal and the thermal protector, the heating plate and the thermal protector can be respectively fixed on the upper side and the lower side of the heat transfer plate while the electric connection function of the heating plate is realized, so that the thermal protector can sense the temperature of the heating plate through the heat transfer plate, and cut off the power supply of the heating plate after sensing that the temperature of the heating plate is overhigh, thereby effectively avoiding the damage of the heating plate caused by overheating and further improving the working stability of the heating plate and the pump body; on the other hand, the thermal protector can be arranged in the electric connection slot outside the pump cover through the matching, so that an operator can directly maintain and replace the thermal protector from the outside without detaching the pump cover, and the practicability of the utility model is improved;

(3) through the structural matching of the shaft sealing ring, the pump cover sealing ring and the gland, the inner side and the outer side of the lower heating cavity can be respectively sealed, the problem that water in the lower heating cavity flows into the inner side of a pump body or leaks outside is effectively avoided, and the stability of the heating water pump is improved; the clamping plate is matched with the step part, so that the pump cover can also fix the gland after being installed, namely the fastening effect of the gland on the shaft sealing ring and the pump cover sealing ring is improved, the problems of looseness and falling of the shaft sealing ring and the pump cover sealing ring are effectively avoided, and the sealing performance of the utility model is further improved;

therefore, the utility model has the characteristics of high heating efficiency and good working stability.

Drawings

FIG. 1 is an external view of the present invention;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is an enlarged view of the section A of FIG. 2;

FIG. 4 is an enlarged view from B of FIG. 2;

fig. 5 is an external view of the impeller.

The labels in the figures are: 1-pump cover, 2-pump body, 3-rotating shaft, 4-impeller, 5-heating plate, 6-upper heating cavity, 7-lower heating cavity, 8-water passing opening, 9-water inlet, 10-water outlet, 11-electricity connecting groove, 12-electricity connecting part, 13-electricity connecting terminal, 14-heat transfer plate, 15-thermal protector, 16-pressing plate, 17-shaft sealing ring, 18-pump cover sealing ring, 19-pressing cover, 20-step part, 21-clamping plate, 201-inner sealing groove and 202-outer sealing groove.

Detailed Description

The utility model is further illustrated by the following figures and examples, which are not to be construed as limiting the utility model.

Examples are given. The utility model provides a direct current heating water pump with heat protect function, constitutes as shown in figure 1, pump cover 1 and the pump body 2 including interconnect, and the middle part of the pump body 2 is equipped with pivot 3, and the one end of pivot 3 is connected with the impeller 4 that extends to in the pump cover 1, the middle part of pump cover 1 is connected with heating plate 5, forms upper heating chamber 6 and lower heating chamber 7 in the pump cover 1 of heating plate 5 both sides respectively, and the middle part of heating plate 5 is equipped with the mouth of a river 8 of crossing that communicates upper heating chamber 6 and lower heating chamber 7, and the top of upper heating chamber 6 is equipped with the water inlet 9 of connecting pump cover 1, and the lateral part of lower heating chamber 7 is equipped with the delivery port 10 of connecting pump cover 1, impeller 4 is located the lower heating chamber 7 of crossing mouth of a river 8 below, and the last distribution of impeller 4 has a plurality of guide vane, and the rivers in the upper heating chamber pass the mouth of a river and from delivery port department outflow through guide vane's rotation.

One side of the pump cover 1 is provided with an electricity connecting slot 11 communicated with the outside, one end of the heating sheet 5 extends into the electricity connecting slot 11 and is provided with an electricity connecting part 12, the outer side of the electricity connecting part 12 is provided with a wiring terminal 13, and the lower end of the wiring terminal 13 is mutually inserted with the electricity connecting part 12.

A heat transfer plate 14 is arranged at the bottom of the electricity connecting groove 11, a thermal protector 15 is arranged on the heat transfer plate 14, the thermal protector 15 can be a conventional temperature control switch, the thermal protector 15 and the heating sheet 5 are respectively attached to the upper surface and the lower surface of the heat transfer plate 14, and one side of the thermal protector 15 is connected with a connecting terminal 13; the middle part of the connecting terminal 13 is provided with a pressing plate 16, and one side of the pressing plate 16 is mutually attached to the thermal protector 15.

The top of the pump body 2 is equipped with inner seal groove 201 and external seal groove 202 respectively, and inner seal groove 201 in-connection has shaft seal ring 17, and shaft seal ring 17's inboard and pivot 3 are laminated each other, and external seal groove 202 in-connection has pump cover sealing ring 18, and the upper end lock of the pump body 2 is connected with gland 19, and gland 19's inboard and shaft seal ring 17 lock each other, and gland 19's the outside is located pump cover sealing ring 18.

One end of the pump cover 1 is buckled and connected with the pump body 2 through a step part 20; the outer end of the pump cover sealing ring 18 is attached to the step portion 20, and the step portion 20 is attached to the gland 19.

And clamping plates 21 for buckling the step parts 20 are arranged on the periphery of the end part of the pump body 2.

The working principle of the utility model is as follows: when the water-saving water heater is used, the impeller 4 rotates to drive water to enter the upper heating cavity 6 from the water inlet 9, then the water passes through the water passing port 8 to enter the lower heating cavity 7 and is discharged from the water outlet 10; when the water flows, the water in the upper heating chamber 6 and the lower heating chamber 7 can be heated by the heating sheet 5, and the contact area between the heating sheet 5 and the water is maximized, so that the heating efficiency of the water pump is increased. When the heating plate 5 works, the temperature of the heating plate 5 can be sensed through the heat transfer plate 14 by the thermal protector 15 on one side, and a signal is sent to cut off the power supply when the temperature of the heating plate 5 is too high, so that the thermal protection function of the heating water pump is realized. By means of the fitting arrangement of the terminal 13 and the pressure plate 16, the thermal protector 15 can be fixed in the contact groove 11 and kept in contact with the heat transfer plate 14, thereby improving the working stability of the thermal protector 15.

When the pump cover 1 and the pump body 2 are installed, the shaft sealing ring 17 on the inner side can be tightly pressed through the pressing cover 19, so that the inner side and the outer side of the shaft sealing ring 17 are completely attached to the inner sealing groove 201 and the rotating shaft 3 respectively, and the inner side of the pump body 2 is sealed; and the sealing is formed on the outer ring through the mutual pressing with the pump cover 1, so that the sealing of the lower heating cavity 7 is realized, and the moisture is prevented from overflowing outside the lower heating cavity 7. Through the structural cooperation of the pump cover 1 and the pump body 2, a second seal can be formed on the outer ring by utilizing the pump cover sealing ring 18, and the sealing effect of the heating water pump is further improved.

Claims

1. The utility model provides a direct current heating water pump with heat protect function, includes interconnect's pump cover (1) and pump body (2), the middle part of the pump body (2) is equipped with pivot (3), and the one end of pivot (3) is connected with impeller (4) that extend to in the pump cover (1), its characterized in that: the utility model discloses a pump cover, including pump cover (1), the middle part of pump cover (1) is connected with heating plate (5), forms heating chamber (6) and lower heating chamber (7) in pump cover (1) of heating plate (5) both sides respectively, and the middle part of heating plate (5) is equipped with the intercommunication and heats chamber (6) and lower water gap (8) of crossing of chamber (7), and the top of going up heating chamber (6) is equipped with water inlet (9) of connecting pump cover (1), and the lateral part of lower heating chamber (7) is equipped with delivery port (10) of connecting pump cover (1), impeller (4) are located lower heating chamber (7) of crossing water gap (8) below, and it has a plurality of guide vane to distribute on impeller (4).

2. The direct-current heating water pump with the thermal protection function according to claim 1, characterized in that: one side of the pump cover (1) is provided with an electricity connecting groove (11) communicated with the outside, one end of the heating sheet (5) extends into the electricity connecting groove (11) and is provided with an electricity connecting part (12), the outer side of the electricity connecting part (12) is provided with a wiring terminal (13), and the lower end of the wiring terminal (13) is mutually inserted into the electricity connecting part (12).

3. The direct-current heating water pump with the thermal protection function according to claim 2, characterized in that: a heat transfer plate (14) is arranged at the bottom of the electric connection groove (11), a heat protector (15) is arranged on the heat transfer plate (14), the heat protector (15) and the heating sheet (5) are respectively attached to the upper surface and the lower surface of the heat transfer plate (14), and one side of the heat protector (15) is connected with a connection terminal (13); the middle part of the wiring terminal (13) is provided with a pressing plate (16), and one side of the pressing plate (16) is attached to the thermal protector (15).

4. The direct-current heating water pump with the thermal protection function according to claim 1, characterized in that: the top of the pump body (2) is equipped with inner seal groove (201) and external seal groove (202) respectively, and inner seal groove (201) in-connection has shaft seal circle (17), and the inboard and pivot (3) of shaft seal circle (17) are laminated each other, and external seal groove (202) in-connection has pump cover sealing washer (18), and the upper end lock of the pump body (2) is connected with gland (19), the inboard and the shaft seal circle (17) mutual lock of gland (19).

5. The direct-current heating water pump with the thermal protection function according to claim 4, characterized in that: one end of the pump cover (1) is buckled and connected with the pump body (2) through a step part (20); the outer end of the pump cover sealing ring (18) is attached to the step part (20), and the step part (20) is attached to the gland (19).

6. The direct-current heating water pump with the thermal protection function according to claim 5, characterized in that: and clamping plates (21) for buckling step parts (20) are arranged around the end part of the pump body (2).