阅读说明：本技术 一种三相双控大功率浮球开关 (Three-phase double-control high-power float switch ) 是由 冯魁廷 于 2019-10-05 设计创作，主要内容包括：本发明公开了一种三相双控大功率浮球开关,包括套管、浮球、第一组三个电极对、第一磁铁、第二磁铁、配重、第二组三个电极对；浮球套在套管外部；套管内中心嵌有第一磁铁；第一磁铁上下端一周分别布置第二组、第一组三个电极对；每个电极对均包括固定电极、活动电极；固定电极固定在套管内；套管内上下端都均布三个容纳活动电极的活动空腔；活动电极设置在固定电极与第一磁铁之间；浮球一端内嵌有环形的第二磁铁；第二磁铁磁力大于第一磁铁磁力；套管上端外部固定有阻挡部,以对浮球的上升位置进行限位；套管下端还设有以对浮球的下降位置进行限位的限位部；浮球与阻挡部之间还设有第三磁铁；浮球下端连接有配重。本发明可实现两个方向控制模式。(The invention discloses a three-phase double-control high-power floating ball switch which comprises a sleeve, a floating ball, a first group of three electrode pairs, a first magnet, a second magnet, a counterweight and a second group of three electrode pairs; the floating ball is sleeved outside the sleeve; a first magnet is embedded in the center of the sleeve; a second group of three electrode pairs and a first group of three electrode pairs are respectively arranged on the upper end and the lower end of the first magnet; each electrode pair comprises a fixed electrode and a movable electrode; the fixed electrode is fixed in the sleeve; three movable cavities for accommodating movable electrodes are uniformly distributed at the upper end and the lower end in the sleeve; the movable electrode is arranged between the fixed electrode and the first magnet; one end of the floating ball is embedded with an annular second magnet; the magnetic force of the second magnet is greater than that of the first magnet; a blocking part is fixed outside the upper end of the sleeve to limit the rising position of the floating ball; the lower end of the sleeve is also provided with a limiting part for limiting the descending position of the floating ball; a third magnet is arranged between the floating ball and the blocking part; the lower end of the floating ball is connected with a balance weight. The invention can realize two direction control modes.)

1. A three-phase double-control high-power float switch is characterized by comprising a sleeve (1), a float ball (2), a first group of three electrode pairs (4), a first magnet (5), a second magnet (6), a counterweight (7), a reset spring (18) and a second group of three electrode pairs (B);

the floating ball (2) is sleeved outside the sleeve (1); two first magnets (5) are embedded in the center of the sleeve (1); a first group of three electrode pairs (4) are symmetrically arranged on the periphery of the lower first magnet (5), and a second group of three electrode pairs (B) are symmetrically arranged on the periphery of the upper first magnet (5); six electrode pairs are formed by the upper and lower groups of electrode pairs, and each electrode pair comprises a fixed electrode (41) and a movable electrode (31); the fixed electrode (41) is fixed in the sleeve (1); three movable cavities are uniformly distributed at the upper end and the lower end in the sleeve (1) respectively and are used for accommodating an upper group of electrode pairs and a lower group of electrode pairs respectively; the three movable electrodes (31) are respectively arranged in the three movable cavities, and the movable electrodes (31) are arranged between the fixed electrode (41) and the first magnet (5); a return spring (18) is arranged between the movable electrode (31) and the sleeve (1); under the action of the first magnet (5) and the return spring (18), the movable electrode (31) and the fixed electrode (41) are in a separated state; three arc-shaped second magnets (6) are embedded in one end of the floating ball (2), and the second magnets (6) can slide up and down along the sleeve (1) along with the floating ball (2); the magnetic force of the second magnet (6) is greater than the sum of the magnetic force of the first magnet (5) and the elastic force of the return spring (18); a blocking part (10) is fixed outside the upper end of the sleeve (1) to limit the rising position of the floating ball (2); the lower end of the sleeve (1) is also provided with a limiting part (16) for limiting the descending position of the floating ball (2); a third magnet (21) is arranged between the floating ball (2) and the blocking part (10) to provide magnetic force between the floating ball (2) and the blocking part (10); the lower end of the floating ball (2) is connected with a balance weight (7).

2. The three-phase double-control high-power floating ball switch as claimed in claim 1, wherein the weight of the counterweight (7) is greater than the liquid buoyancy; the sum of the magnetic force between the third magnet (21) and the floating ball (2) and the magnetic force between the second magnet (6) and the movable electrode is greater than the weight of the floating ball (2) and less than the weight of the floating ball (2) and the counterweight (7).

3. The three-phase double-control high-power float switch according to claim 1, wherein the sleeve (1) is a cambered triangle body which is formed by splicing three cambered convex surfaces, and the central angle of each cambered convex surface is 120 degrees; the fixed electrode (41) and the movable electrode (31) are both arc-shaped, and the arc-shaped angle is the same as the central angle of the corresponding arc-shaped convex surface.

4. The three-phase double-control high-power float switch as claimed in claim 1, wherein the lower end of the float ball (2) is connected with a hanging frame (15) through three pulling and hanging wires (14); the upper end of the counterweight (7) is connected with the middle of the hanging frame (15) through a traction and hanging wire (14).

5. The floating ball switch with double control and high power of three-phase according to claim 1, characterized in that the blocking part (10) is provided with a plurality of third magnets (21) for adjusting the magnetic force; a band iron ring (11) is embedded in the upper end of the floating ball (2).

6. The floating ball switch with double control and high power of the claim 1, characterized in that the upper end of the floating ball (2) is provided with a plurality of third magnets (9); the blocking part (10) is made of magnetic conductive materials or embedded with a flat iron ring (11).

7. The three-phase double-control high-power float switch according to claim 1, wherein the sleeve (1) is made of insulating materials such as insulating PP (polypropylene) materials or ceramics; the shell of the floating ball (2) is made of 304 stainless steel and is filled with foaming polyurethane.

8. The three-phase double-control high-power floating ball switch as claimed in claim 1, wherein the counterweight (7) is hollow ball filled with liquid.

Technical Field

The invention belongs to the field of liquid level sensing automatic control, and particularly relates to a three-phase double-control high-power floating ball switch.

Background

At present, mainstream float switches in the electric control market are mainly divided into a reed switch, a mercury switch and a KEY float switch. The reed switch is switched on and off under the action of a magnet through the reed switch, and is divided into a normally closed type and a normally open type, so that the reed switch has the defects of small switching current and about 10W of power, and a single switch can only control the water level of a point; the mercury switch is designed by utilizing the conductivity and the fluidity of mercury, the switch ball is controlled by overturning and moving the mercury ball, although the current is slightly larger than that of a reed switch and a certain interlayer water level can be controlled, the environmental pollution is large after later maintenance and damage. The two switches are single switches, and the control of the high-power equipment is completed through a relay, so that the complexity of a circuit is increased, the cost is increased, the maintenance difficulty is increased, the later stage of the float switch has no expansibility, and the product limitation is very large. And the three-phase large power is controlled by a relay. The invention can realize the automatic control of two three-phase high-power devices.

Disclosure of Invention

The invention aims to provide a three-phase double-control high-power float switch, which can control large liquid level difference and can realize the electric control of two three-phase high-power devices by a single switch.

The technical solution for realizing the purpose of the invention is as follows:

a three-phase double-control high-power float switch comprises a sleeve, a float, a first group of three electrode pairs, a first magnet, a second magnet, a counterweight, a reset spring and a second group of three electrode pairs;

the floating ball is sleeved outside the sleeve; two first magnets are embedded in the center of the sleeve; a first group of three electrode pairs are symmetrically arranged on the periphery of the lower end of the first magnet, and a second group of three electrode pairs are symmetrically arranged on the periphery of the first electromagnet on the upper end of the first magnet; six electrode pairs are formed by the upper and lower groups of electrode pairs, and each electrode pair comprises a fixed electrode and a movable electrode; the fixed electrode is fixed in the sleeve; three movable cavities are uniformly distributed at the upper end and the lower end in the sleeve respectively and are used for accommodating an upper group of electrode pairs and a lower group of electrode pairs respectively; the three movable electrodes are respectively arranged in the three movable cavities, and the movable electrodes are arranged between the fixed electrodes and the first magnets; a return spring is arranged between the movable electrode and the sleeve; under the action of the first magnet and the reset spring, the movable electrode and the fixed electrode are in a separated state; three arc-shaped second magnets are embedded in one end of the floating ball and can slide up and down along the sleeve along with the floating ball; the magnetic force of the second magnet is greater than the sum of the magnetic force of the first magnet and the elastic force of the return spring; a blocking part is fixed outside the upper end of the sleeve to limit the rising position of the floating ball; the lower end of the sleeve is also provided with a limiting part for limiting the descending position of the floating ball; a third magnet is arranged between the floating ball and the blocking part to provide magnetic force between the floating ball and the blocking part; the lower end of the floating ball is connected with a balance weight.

Compared with the prior art, the invention has the following remarkable advantages:

(1) the float switch can be directly connected with high-power equipment through a wire to control the working state of the float switch, and does not need to be connected with other electrical equipment, so that the automatic control of two paths of three-phase power is realized.

(2) The float switch can realize two working modes of high-level drainage and low-level water supplement, realize the control of the liquid level difference by adjusting the distance between the float and the balance weight, realize the control of the larger liquid level difference by only adjusting the length of the suspension wire, and has low cost.

Drawings

Fig. 1 is a structural schematic diagram of a three-phase float switch in a low state.

Fig. 2 is a schematic structural diagram of a three-phase float switch in a high state.

Fig. 3 is a schematic top view of the barrier.

Fig. 4(a-b) are a cross-sectional view and a top view, respectively, of the casing.

Fig. 5(a-f) are schematic cross-sectional views 1-1 to 6-6, respectively, of fig. 4 a.

Detailed Description

The invention is further described with reference to the following figures and embodiments.

With reference to fig. 1, the three-phase double-control high-power float switch of the present invention comprises a sleeve 1, a float 2, a first group of three electrode pairs 4, a first magnet 5, a second magnet 6, a counterweight 7, a return spring 18, and a second group of three electrode pairs B;

the floating ball 2 is sleeved outside the sleeve 1; two first magnets 5 are embedded in the center of the sleeve 1; a first group of three electrode pairs 4 are symmetrically arranged on the periphery of the lower end first magnet 5, and a second group of three electrode pairs B are symmetrically arranged on the periphery of the upper end first magnet 5; six electrode pairs are formed by the upper and lower groups of electrode pairs, and each electrode pair comprises a fixed electrode 41 and a movable electrode 31; the fixed electrode 41 is fixed in the sleeve 1; three movable cavities are uniformly distributed at the upper end and the lower end in the sleeve 1 respectively and are used for accommodating an upper group of electrode pairs and a lower group of electrode pairs respectively; the three movable electrodes 31 are respectively arranged in the three movable cavities, and the movable electrodes 31 are arranged between the fixed electrode 41 and the first magnet 5; a return spring 18 is arranged between the movable electrode 31 and the sleeve 1, and the end part of the return spring 18 is fixed with the sleeve 1 by an insulating ring 13; under the action of the first magnet 5 and the return spring 18, the movable electrode 31 is separated from the fixed electrode 41; three arc-shaped second magnets 6 are embedded in one end of the floating ball 2, and the second magnets 6 can slide up and down along the sleeve 1 along with the floating ball 2; the magnetic force of the second magnet 6 is greater than the sum of the elastic force of the first magnet 5 and the return spring 18; a blocking part 10 is fixed outside the upper end of the sleeve 1 to limit the rising position of the floating ball 2; the lower end of the sleeve 1 is also provided with a snap ring 16 to limit the descending position of the floating ball 2; a third magnet 21 is arranged between the floating ball 2 and the blocking part 10 to provide magnetic force between the floating ball 2 and the blocking part 10; the lower end of the floating ball 2 is connected with a counterweight 7.

Further, the weight of the counterweight 7 is larger than the liquid buoyancy; the sum of the magnetic force between the third magnet 21 and the floating ball 2 and the magnetic force between the second magnet 6 and the movable electrode is greater than the weight of the floating ball 2 and less than the weight of the floating ball 2 and the counterweight 7. Therefore, when the liquid level drops to the height position of the counterweight 7, the weight of the counterweight 7 and the floating ball 2 is larger than the suction force of the third magnet 9, the floating ball 2 falls down, and the switch-on direction of the switch is changed.

Further, with reference to the drawings (a-b) and 5(a-f), the sleeve 1 is a cambered triangular body which is formed by splicing three arc-shaped convex surfaces, and the central angle of each arc-shaped convex surface is 120 degrees; the fixed electrode 41 and the movable electrode 31 are both arc-shaped, and the arc-shaped angle is the same as the central angle of the corresponding arc-shaped convex surface. The arc-shaped movable electrode is a combination of the galvanized soft iron and the copper, the inner side of the arc-shaped movable electrode is the galvanized soft iron, and the outer side of the arc-shaped movable electrode is the copper (contact surface). The same arc of contact surface ensures a larger area of electrical contact, while the arc provides a relatively large space for the inner first magnet 5.

As an embodiment, the lower end of the floating ball 2 is connected with a hanging frame 15 (a tripod) through three traction lines 14; the upper end of the counterweight 7 is connected with the middle of the hanging frame 15 through a traction hanging wire 14, the distance between the counterweight 7 and the floating ball 2 can be adjusted through the hanging wire 14, the liquid level difference can be adjusted through the length of the counterweight 7 hanging wire, and a switch can control a large liquid level difference.

As an embodiment, referring to fig. 3, a plurality of third magnets 21 are disposed on the blocking portion 10 to adjust the magnitude of the magnetic force; the inside band iron ring 11 that has inlayed of floater 2 upper end. In another embodiment, a plurality of third magnets 21 are arranged at the upper end of the floating ball 2; the blocking part 10 is made of magnetic conductive material or embedded with a flat iron ring 11. Both of the above manners may provide a magnetic force between the stopper 10 and the third magnet 21.

Further, a hook for pulling the suspension wire 12 is arranged at the lower end of the floating ball 2 so as to hang the counterweight 7.

Further, the sleeve 1 is made of insulating materials such as insulating PP materials or ceramic materials; the shell of the floating ball 2 is made of 304 stainless steel and is filled with foamed polyurethane; the balance weight 7 can be a hollow ball, liquid is injected into the hollow ball, and the weight of the hollow ball can be adjusted by adjusting the amount of the liquid in the hollow ball.

Referring to fig. 1 and 2, in the float switch of the present invention, the upper fixed electrode 41 and the lower fixed electrode 41 are led out through the wire a and the wire 9, respectively, and the upper and lower sets of movable electrodes are connected in series and led out through the wire 8, so that two control modes of a single float can be realized: when the liquid level rises, the floating ball 2 is attracted with the blocking part 10 under the action of the third magnet 21, at the moment, the second magnet 6 is just opposite to the second three electrode pairs B at the upper end of the sleeve 1, because the magnetic force of the second magnet 6 is greater than the magnetic force of the first magnet 5, the movable electrodes 31 of the second three electrode pairs B are contacted with the fixed electrodes 41 under the action of the attraction force of the second magnet 6, the second three electrode pairs B are in a conducting state, and the motor drains water. When the liquid level is lowered to a certain height of the counterweight 7, the sum of gravity is greater than the sum of magnetic force, the floating ball falls to the snap ring 16, so that the floating ball 2 is aligned with the first group of three electrode pairs 4 at the lower end of the sleeve 1, similarly, because the magnetic force of the second magnet 6 is greater than the magnetic force of the first magnet 5, the movable electrodes 31 of the first group of three electrode pairs 4 are contacted with the fixed electrodes 41 under the action of the attractive force of the second magnet 6, the first group of three electrode pairs 4 are in a conducting state, and the motor is filled with water. The high-level water drainage and the low-level water injection in the two control modes are realized.