Flange type float switch

Abstract

The utility model belongs to the technical field of switches, and particularly relates to a flange type float switch. Comprising a flange upper cover and a flange lower cover, the flange upper cover is connected with the flange lower cover, the flange lower cover is provided with a shell and a shell connecting end, the side wall of the shell is oppositely provided with a liquid outlet and a liquid inlet, the flange upper cover is provided with a signal line leading-out port, the middle position of the flange upper cover is provided with a cavity, and a switch module is installed in the cavity. The switch module and the magnetic steel rod are induced through magnetic steel, and the magnetic steel rod is connected with the floating ball. The utility model has the beneficial effects that the swing type floating ball mechanism and the flange type dismounting and mounting structure are arranged according to the actual situation of an engineering site; through a simple switch module structure, a reliable floating ball swinging and switch module movement mode is provided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to switch technical field, concretely relates to a flange type floating ball switch. BACKGROUND

[0002] The existing floating ball switch structure is more complex, and often multiple mechanisms cooperate to realize the switch function, which increases the probability of damage to the whole device.

[0003] For example, a pump water level controller disclosed in Chinese patent document application No. 201520408984.7 includes a base and an outer cover. A switch module and a lever are arranged in the cavity of the outer cover. One end of the lever is hingedly connected in the outer cover. A boom is movably connected to the base. A floating ball is fixed to the lower end of the boom. The upper end of the boom can be connected to the lever. A magnet is fixed to the upper end of the boom. Another magnet is fixed to the other end of the lever. The two magnets are opposite to each other and attract each other. When the two magnets attract each other, the lever can push the button of the switch module. However, when the water level drops, the floating ball of the boom cannot smoothly drop with the water level due to the attraction between the two magnets. Therefore, the control is not accurate and the work is not reliable. SUMMARY

[0004] The utility model aims at providing a flange type floating ball switch. The floating ball stroke of the switch is short, and the activity range is restricted, which greatly increases the accuracy of the liquid level switch. The liquid level switch can quickly respond to the change of the liquid level in the float. The problem of excessive accuracy of the liquid level switch in nuclear power plants is solved. At the same time, the liquid level switch is provided with a corresponding switch module for the swing type floating ball structure. The switch structure is simple, stable and reliable, and can effectively realize the functional requirements of the liquid level switch.

[0005] The technical scheme of the utility model is as follows: a flange type floating ball switch includes a flange upper cover, a flange lower cover, a shell installed on the flange lower cover, a shell connection end, a liquid outlet and a liquid inlet arranged on the opposite side walls of the shell, a signal line exit opening provided on the flange upper cover, a cavity in the middle position of the flange upper cover, a switch module installed in the cavity, a magnet steel rod connected to the floating ball through magnet steel induction.

[0006] A positioning suspension point is arranged on the magnet steel rod near the floating ball.

[0007] A balance weight is sleeved on the magnet steel rod.

[0008] A pin hole is opened on the magnet steel rod, and a pin is fixed on the clamping groove.

[0009] The switch module comprises a support, left and right symmetrical magnetic blocks, wherein the magnetic blocks each comprise a magnetic strip, one end of the support is connected with the magnetic block left and right and a mounting piece through a push rod pivot, a signal wiring terminal is connected to the mounting piece through an expansion rod, a signal leading terminal is also connected to the mounting piece, the other end of the support is connected with the magnetic block right and a mounting piece through a push rod pivot, a signal wiring terminal is connected to the mounting piece through an expansion rod, a signal leading terminal is also connected to the mounting piece, a buckle is installed at the middle position of the support, and the support pivot and a pin.

[0010] A pivot gasket is arranged between the support and the push rod pivot.

[0011] The flange upper cover and the flange lower cover are connected through a bolt and nut structure.

[0012] The shell is connected with the end through a bevel welding manner.

[0013] The beneficial effect of the utility model lies in: according to the actual situation of engineering site, swing type floating ball mechanism and flange type dismounting structure are arranged, through relatively simple switch module structure, reliable floating ball swing and switch module movement mode are possessed. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a flange type floating ball switch three-dimensional drawing provided by the utility model;

[0015] Figure 2 It is a flange type floating ball switch sectional view provided by the utility model;

[0016] Figure 3 It is a flange type floating ball switch internal structure drawing provided by the utility model;

[0017] Figure 4 It is a switch module schematic view;

[0018] Figure 5 It is a switch module structure view.

[0019] In the drawing: 1, flange upper cover, 2, flange lower cover, 3, shell, 4, bevel welding, 5, end, 6, signal line leading-out port, 7, liquid outlet, 8, liquid inlet, 9, switch module, 10, sealing gasket, 11, threaded seal, 12, limit slot, 13, balance weight, 14, push rod pivot, 15, support pivot, 16, pivot gasket, 17, pin, 18, buckle, 19, expansion rod, 20, signal wiring terminal, 25, magnetic block left, 26, magnetic block right, 27, magnetic strip, 28, signal leading terminal, 29, magnetic steel rod, 30, positioning suspension point, 31, floating ball. DETAILED DESCRIPTION

[0020] The utility model will be further explained in detail in combination with the drawings and specific embodiments.

[0021] The existing flange bolted way makes the float ball liquid level switch very troublesome when disassembling and repairing, and the application scene of the float ball liquid level switch is often very wet, and rust often occurs, which makes the disassembly of the float ball liquid level switch more troublesome and is not conducive to the normal maintenance of the float ball liquid level switch, and therefore the flange type float ball switch is provided to solve the above problems.

[0022] The utility model discloses a flange type float ball switch, in order to facilitate installation and maintenance, set up the flange type dismounting structure, more convenient application in engineering site. Meanwhile switch module sets up two magnets mutually and cooperates transmission electric signal for swing type float ball structure, compared with traditional float ball switch, this structure is more simple and exquisite.

[0023] As shown in Figure 1 A kind of flange type float ball switch, including flange upper cover 1, flange lower cover 2, flange upper cover 1 is connected with flange lower cover 2 by bolt nut structure, flange lower cover 2 is installed with cylindrical shell 3, shell 3 is connected end 5 by way of bevel groove welding 4, the side wall of shell 3 is oppositely provided with liquid outlet 7 and liquid inlet 8, signal line exit 6 is set up on flange upper cover 1, signal line is led out from signal line exit 6.

[0024] As shown in Figure 2 Flange upper cover 1 has a cavity in middle position, switch module 9 is installed in cavity, as shown in Figure 3 Switch module 9 and magnet steel pole 29 are inductively connected by magnet steel, magnet steel pole 29 is connected with float ball 31, positioning suspension point 30 is arranged on magnet steel pole 29 close to float ball 31, balance weight 13 is sleeved on magnet steel pole 29, a pin hole is formed on magnet steel pole 29, and pin is fixed on clamping groove 12, and switch module 9 is connected by signal line external circuit control system.

[0025] As shown in Figure 4 And 5As shown, the switch module 9 includes a bracket, a left magnetic block 25 and a right magnetic block 26 which are left-right symmetrical, wherein the left magnetic block 25 and the right magnetic block 26 each include a magnetic strip 27, a signal leading terminal 28, an extension rod 19, a signal wiring terminal 20, a push rod pivot 14, a bracket pivot 15, a pivot washer 16, a pin 17 and a buckle 18, one end of the bracket is connected with the left magnetic block 25 and a mounting piece through the push rod pivot 14, the pivot washer 16 is arranged between the bracket and the push rod pivot 14, the signal wiring terminal 20 is connected on the mounting piece through the extension rod 19, the signal leading terminal 28 is also connected on the mounting piece, the other end of the bracket is connected with the right magnetic block 26 and a mounting piece through the push rod pivot 14, the pivot washer 16 is arranged between the bracket and the push rod pivot 14, the signal wiring terminal 20 is connected on the mounting piece through the extension rod 19, the signal leading terminal 28 is also connected on the mounting piece, the buckle 18 is mounted at the middle position of the bracket, and the bracket pivot 15 and the pin 17.

[0026] The working process of the utility model is as follows:

[0027] The float ball liquid level uses magnetic operation, and no mechanical connecting piece is arranged, and the operation is simple and reliable. When the float ball switch is floated by the measured medium float, the float drives the main body to move, and the magnet at the other end of the float will control the magnet on the switch action rod. The float ball switch is a liquid level control device which is simple in structure, convenient to use and safe and reliable, has the advantages of small size, high speed and long service life compared with general mechanical switches, and has the characteristics of strong anti-load impact capacity compared with electronic switches.

[0028] When the measured medium is gradually added into the shell 3 from the liquid inlet 8, the float ball 31 gradually floats up under the action of the buoyancy, the front end of the float ball 31 is welded with a high-temperature-resistant magnetic steel, when the float ball 31 swings, the magnetic steel also swings up and down. The position of the float ball 31 is limited by the magnetic steel mechanism, so that the swing angle of the magnetic steel is also limited. When the front end magnetic steel swings to the specified position, the repulsive force is generated between the magnetic steel in the float ball swing mechanism and the switch magnetic steel in the junction box, so that the switch magnetic steel in the junction box moves, the front end contact connected with the magnetic steel is closed, the circuit is conducted, and an electric signal is conducted. When the liquid in the float is reduced, the float ball swings reversely, so that the other end magnetic steel in the switch moves, and the switch is switched.

Claims

1. A flange type float switch characterized by: The flange upper cover, the flange lower cover, the flange upper cover and the flange lower cover are connected, the shell is installed on the flange lower cover, the shell is connected with the end head, the side wall of the shell is provided with the liquid outlet and the liquid inlet, the signal line exit is formed on the flange upper cover, the flange upper cover has a cavity in the middle position, the switch module is installed in the cavity, the switch module is inducted by the magnetic steel of the magnetic steel rod, and the magnetic steel rod is connected with the float ball.

2. A flange type float switch as claimed in claim 1, characterized in that: The magnetic steel rod is provided with a locating suspension point near the float ball.

3. A flange type float switch as claimed in claim 1, wherein: The magnetic steel rod is sleeved with a balance weight.

4. A flange type float switch as claimed in claim 1, wherein: A pin hole is formed on the magnetic steel rod and fixed on the clamping groove through the pin.

5. A flange type float switch as claimed in claim 1, wherein: The switch module comprises a bracket, a left magnetic block and a right magnetic block which are symmetrical, wherein the left magnetic block and the right magnetic block each comprise a magnetic strip, one end of the bracket is connected with the left magnetic block and a mounting piece through a push rod pivot, the mounting piece is connected with a signal terminal through an expansion rod, the mounting piece is further connected with a signal exit terminal, the other end of the bracket is connected with the right magnetic block and a mounting piece through a push rod pivot, the mounting piece is connected with a signal terminal through an expansion rod, the mounting piece is further connected with a signal exit terminal, a buckle is installed at the middle position of the bracket, and the bracket pivot and the pin.

6. A flange type float switch as claimed in claim 5, characterized in that: The pivot is provided between the bracket and the push rod pivot.

7. A flange type float switch as claimed in claim 1, wherein: The flange upper cover and the flange lower cover are connected through a bolt and nut structure.

8. A flange type float switch as claimed in claim 1, wherein: The shell is connected with the end head through a bevel groove welding mode.

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