CN2144321Y

CN2144321Y - Automatic controller for liquid level

Info

Publication number: CN2144321Y
Application number: CN 92242095
Authority: CN
Inventors: 汪友根
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-11-17
Filing date: 1992-11-17
Publication date: 1993-10-20
Anticipated expiration: 2002-11-17

Abstract

The utility model discloses an automatic controller for liquid level, mainly comprising a switch (1), a draw rod (5) and a float (4). The utility model is characterized in that the draw rod (5) is hinged with the head of a handle (7) of the switch (1), the draw rod (5) is provided with an upper stopper (2) and a lower stopper (3), the float (4) is hollow sheathed on the draw rod (5), and the float can float up and down along the draw rod (5) between the upper stopper (2) and the lower stopper (3). The utility model mainly uses the buoyancy and the gravitation of the float to push and pull the switch (1) to control the liquid level through the draw rod (5). So the utility model has the advantages of simple structure, low cost, economical use, strong applicability and reliable operation.

Description

Automatic controller for liquid level

The utility model relates to a kind of on-electric variable control device, more particularly relates to a kind of fluid level control device.

Existing fluid level control device is of a great variety, but is divided into electronic type and mechanical two big classes with regard to its control mode.Electronic type be divided into contact and contactless two kinds again, contact mainly contain condenser type and resistance-type, can only control the liquid of the more stable or conduction of some electrical characteristics, the liquid that some electrical characteristics are constantly changed then can't use; Contactless mainly is hyperacoustic, and it is suitable for some occasions that need accurate measuring liquid level, if do simple liquid level control then very uneconomical with it.Mechanical that mainly contain magnetic control and travel switch control, it generally is used for the occasion that needs keep constant level, otherwise electronic circuit that must the outfit more complicated.In a word, existing fluid level control device complex structure, cost height, to be used for simple fluid level control device uneconomical.

The purpose of this utility model be disclose a kind of simple in structure, cheap, use that economy, adaptability are strong, the mechanical type automatic control of liquid device of reliable operation.

The utility model realizes that the above-mentioned purpose technical solution mainly is made up of switch, pull bar and float, it is characterized in that described pull bar is hinged on the head of switch knob; Pull bar is provided with upper limit position block and lower position block, and the float sky is enclosed within on the pull bar, can fluctuate along pull bar between upper limit position block and lower position block.

Below in conjunction with accompanying drawing and possible embodiments the utility model is explained in further detail.

Description of drawings

Fig. 1 is the structural representation of a kind of specific embodiments of the utility model.

Fig. 2 is a m--n cut-open view among Fig. 1.

Fig. 3 is the assembly structure synoptic diagram of pull bar (5) and upper limit position block (2) or lower position block (3) in the another kind of specific embodiments of the present utility model.

Embodiment 1

With reference to Fig. 1, on market, buy illumination and extend with toggle switch (1) and with its handle (7).See figures.1.and.2, by the technique known selection and process each parts.

With reference to Fig. 1, the protection box (8) that inside is equipped with switch (1) is installed on the water tank (9), the mounting hole and the guide pin bushing (6) that then pull bar (5) are passed on the water tank (9) are hinged with the handle (7) of switch (1), put float (4) again, control requires two half upper limit position block (2) and lower position block (3) are fixed on the pull bar (5) with bolt (10) according to liquid level simultaneously.

When liquid level during at illustrated A place (lower limit), with switch drop-down (inside contact closure), start water pump pump water by the gravity of pull bar (5) and float (4) with reference to Fig. 1, along with the rising of water level, float (4) floats along pull bar (5).When water level rises to the B place (upper limit), float (4) contacts with upper limit position block (2), and this moment, water level continued to push away on the handle of buoyancy with switch (1) of rising by float (4) again, and (referring to Fig. 1 dotted line position) pump power is cut off, and stops pump water.When water level begins to descend, float (4) then leaves upper limit position block (3) along with decline of water table, this moment since the deadweight of float (4) disappear with its buoyancy is crowded, the gravity deficiency of pull bar (5) is to leave behind the handle (7) of switch (1) separately, in case water level is reduced to the A place, the gravity of float (4) also acts on the pull bar (5), with joint efforts the handle (7) of switch (1) being left behind of pull bar (5) and float (4) gravity, start water pump pump water once more, so circulation is controlled at water level between A, the B.

Embodiment 2

With reference to Fig. 3, adopt thread connection between upper limit position block in the present embodiment (2) and lower position block (3) and the pull bar (5), can according to level control (LC) require to adjust upper limit position block (2) and lower position block (3) on pull bar (5) the position and distance between the two.

Other enforcement means of present embodiment and embodiment 1 identical (referring to Fig. 1).

Claims

1, a kind of automatic control of liquid device mainly is made up of switch (1), pull bar (5) and float (4), it is characterized in that described pull bar (5) is hinged on the head of the handle (7) of switch (1); Pull bar (5) is provided with upper limit position block (2) lower position block (3), and float (4) sky is enclosed within on the pull bar (5), can fluctuate along pull bar (5) between upper limit position block (2) and lower position block (3).

2, a kind of automatic control of liquid device according to claim 1 is characterized in that upper limit position block (2) and lower position block (3) all are two half of symmetry, are clamped on the pull bar (5) with bolt (10).

3, a kind of automatic control of liquid device according to claim 1 is characterized in that being between pull bar (5) and upper limit position block (2) and the lower position block (3) thread connection.

4, according to claim 1 or 2 or 3 described a kind of automatic control of liquid devices, it is characterized in that pull bar (5) is set in the guide pin bushing (6).

5, a kind of automatic control of liquid device according to claim 4 is characterized in that switch (1) is located in the protection box (8).