CN2419396Y

CN2419396Y - Underwater pump

Info

Publication number: CN2419396Y
Application number: CN 00222491
Authority: CN
Inventors: 甘培元
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-03-13
Filing date: 2000-03-13
Publication date: 2001-02-14
Anticipated expiration: 2010-03-13

Abstract

The utility model relates to an underwater pump, which is characterized in that the underwater pump comprises a pump body 1, the inside of which is provided with an electric machine, an electric machine shaft 2, a base seat 8, a water inlet chest 6, a water outlet pipe, an impeller and a power supply line 12, wherein, the upper part of the base seat 8 is fixed on the bottom of a casing of the pump body 1, and a cylindrical rubber water seal 3 is arranged between the base seat 8 and the electric machine shaft 2. The utility model is also provided with an alarm device for air pressure water leakage and an alarm circuit for water seal water leakage.

Description

Submersible pump

The utility model relates to a kind of submersible pump.

The water seal of existing submersible pump is made of the spring abutment that is placed in the spring on the motor shaft and is loaded on the band rubber ring of both ends of the spring mostly, and is provided with lubricant reservoir at underpart, and water seal is dipped in the lubricant oil.But practice shows that this water seal is the price height not only, and working life is impermanent; In addition, existing submersible pump does not have the detection alarm device that leaks mostly.

The purpose of this utility model is a kind of good seal performance of design, and manufacturing is installed all very convenient, and long submersible pump water seal in working life; Design a kind of simple and practical leakage inspection warning device simultaneously.

The utility model is achieved in that

A kind of submersible pump relate to the pump housing of inner electric machine, and the pump housing is by motor shaft, base, inlet water tank, outlet pipe, impeller and motor power-supply wire constitute, wherein pump housing outer casing bottom is fixed on base top, between base and motor shaft water seal is housed, the base bottom is fixed on the inlet water tank, and impeller is fixed in the motor shaft end and is loaded in the inlet water tank, it is characterized in that described water seal is the water seal of cylindrical shape block rubber, also is equipped with the leakage inspection warning device in this submersible pump.In fact, this water seal can be a non-irrigated water pump rubber water sealing commonly used at present.

In order to reduce wear, prolong the working life of rubber water sealing, also can draw an annular shoe cream room at rubber water sealing inwall middle part.

Described leakage inspection warning device can be to be loaded on the pump housing and the air valve that is communicated with pump housing inner chamber, and described air valve can directly adopt bicycle valve core.

Described leakage inspection warning device also can be such circuit: this circuit comprises resistance and the tutorial light that is series at power line live wire end, be series at the resistance and the tutorial light of power line zero line side, and between the circuit of two groups of resistance and tutorial light formation, draw power center's line is arranged, the termination of center line is exposed and be close to the water seal inboard, and the motor coil two ends connect power firestreak and zero line respectively.

At the coil one end temperature control diode of also can connecting, and the temperature zone of temperature control diode is close on the coil.

The utlity model has following advantage:

1, the water seal cost is low, and installation is changed all very convenient, and working life is longer, particularly when water seal inwall middle part has annular shoe cream room, because the effect of lubricant oil in the oil pocket more can prolong the working life of water seal.

2, owing to can in the pump housing, be pressed into the air of certain pressure, can check the sealing situation of the pump housing at any time by air valve.

3, when water seal is leaked, the exposed end A point ground connection of center line, the tutorial light M of zero-power line end extinguishes (during proper functioning, tutorial light M and the tutorial light M on the zero line on the live wire are all luminous), can point out machine master hard stop to change water seal.

4, when machine operation unusual, after coil L temperature surpasses certain limit, be close to temperature control diode on the coil L protection motor of can cutting off the electricity supply immediately.

Fig. 1 is a partial sectional view of the present utility model, and 10 is the bearing of motor shaft 2 among the figure.

Fig. 2 is an embodiment's of water seal a sectional view.

Fig. 3 is another embodiment's of water seal a sectional view.

Fig. 4 is the circuit diagram of the water leakage alarm device of water seal.

Below, in conjunction with the accompanying drawings the utility model is described further.

As Fig. 1 and Fig. 4, a kind of submersible pump relates to the pump housing 1 of inner electric machine, motor shaft 2, base 8, inlet water tank 6, outflow box 9, impeller 5 and power line 12, wherein the pump housing 1 outer casing bottom is fixed on base 8 tops, and cylindrical shape block rubber water seal 3 is housed between base 8 and motor shaft 2, and the base bottom is fixed on the inlet water tank 6, impeller 5 is fixed in motor shaft 3 ends and is loaded in the inlet water tank 6, and the valve inside 7 that is communicated with the pump housing 1 inner chamber also is housed on base 8.

Be in series with resistance R and neon lamp M respectively at power line 12 two ends, and draw between the circuit that two groups of resistance R and tutorial light M constitute power center's line 11 is arranged, the end A of center line 11 is exposed and be close to water seal 3 inboards.The motor coil L two ends are connected to respectively between power firestreak and the zero line, also are in series with temperature control diode D (model is KSD301,100 ℃ of setting temperatures) at motor coil L one end.In practice, neon lamp M and resistance R can be loaded on the power plug.

As Fig. 2 and Fig. 3, water seal 3 is cylindrical shape block rubber water seals 3.The inwall middle part of water seal 3 but shown in Figure 3 also has annular shoe cream room 4, when this water seal is installed, should fill with lubricant oil in annular shoe cream room 4, is beneficial to prolong the working life of water seal 3.

The working principle of its leakage inspection warning device is:

When need check whether body leaks, in body, be pressed into the air of certain pressure with inflating pump by valve inside 7, then submersible pump is inserted in the water, if the bubbling phenomenon occurs, just illustrate that bubbling place can leak, otherwise just illustrate that the submersible pump inner chamber is in air-tight state.

When water seal 3 places leaked, the exposed end A of power center's line was in ground state once touching water, and power firestreak is communicated with the earth B, and this moment, the neon lamp M of zero-power line end just extinguished, and shut down the replacing water seal with indication machine master.When water seal 3 was not leaked, power center's line 11 was in off state with the earth B, and the neon lamp at power line 12 live wires and zero line two ends is all luminous, and expression water seal 3 is working properly.

For the purpose of safety and sensitivity, the resistance of resistance R should be much larger than the resistance of water, and the resistance of R is generally 200～250K Ω and is advisable in the practice.

When the temperature of coil L reached more than 100 ℃, power supply, motor that temperature control diode D will disconnect coil L quit work; When the temperature of coil L is lower than 100 ℃, temperature control diode D conducting, motor recovers normal working.

Claims

1, a kind of submersible pump, the pump housing (1) that relates to inner electric machine, and the pump housing (1) is by motor shaft (2), base (8), inlet water tank (6), outlet pipe (9), impeller (5) and motor power-supply wire (12) constitute, wherein the pump housing (1) outer casing bottom is fixed on base (8) top, between base (8) and motor shaft (2) water seal (3) is housed, base (8) bottom is fixed on the inlet water tank (6), and impeller (5) is fixed in motor shaft (3) end and is loaded in the inlet water tank (6), it is characterized in that described water seal (3) is cylindrical shape block rubber water seal (3), also is equipped with the leakage inspection warning device in this submersible pump.

2, submersible pump according to claim 1 is characterized in that described water seal (3) inwall middle part also has annular shoe cream room (4).

3, submersible pump according to claim 1 and 2 is characterized in that described leakage inspection warning device is to be loaded on the air valve (7) that the pump housing (1) is gone up and is communicated with the pump housing (1) inner chamber.

4, submersible pump according to claim 1 and 2, it is characterized in that described leakage inspection warning device is a circuit arrangement, this circuit comprises resistance (R) and the tutorial light (M) that is series at power line (12) live wire end, be series at the resistance (R) and the tutorial light (M) of power line (12) zero line side, and between the circuit of two groups of resistance (R) and tutorial light (M) formation, draw power center's line (11) is arranged, the termination (A) of center line (11) is exposed and be close to water seal (3) inboard, and motor coil (L) two ends connect power firestreak and zero line respectively.

5, submersible pump according to claim 4 it is characterized in that also being in series with temperature control diode (D) at coil (L) end, and the temperature zone of temperature control diode (D) is close on the coil (L).