CN200953089Y - Rotary bin level controller - Google Patents

Abstract

This utility model is a rotary level controller that can monitor and control the level of materials in a bin. With this utility model, one back spring, microswitch and circuit board furnished with relay, wiring blank and indicator are installed on the bracket inside the motor casing. The driving axle of the motor is directly coupled to the test piece shaft. The external protective tube of the test piece shaft is connected to the sealing base. The sealing base, wave spring, stainless steel sealing pad and the sealing head that is screwed onto the test piece shaft and filled with graphite PTFE linings constitute the sealing mechanism together. Compared with ZXK rotating paddle level switch, this utility model is maintenance free and has a simple structure, a reduced fault rate and a long working life. The material costs are reduced by 25% and the performance is increased. The stainless steel sealing pads are compressed onto the sealing head filled with graphite PTFE linings subject to the elasticity of wave spring. Hence, a good sealing effect is achieved and the aging problem of rubber sealing members is solved.

Description

Rotary charge level controller

Technical field the utility model relates to a kind of level meter, is the rotary charge level controller that can monitor, control thing position in the feed bin.

The instrument of the at present existing multiple measurement thing position of background technology, it is exactly wherein a kind of that the ZXK type hinders rotatable level-sensing device, though the sales volume on market is fine, but this instrument is to establish a lid fork-like farm tool used in ancient China to fix a shifting shaft and motor fixing shaft on the pawl pole permanent-magnet synchronous machine, shifting shaft is stirred two microswitches, motor fixing shaft is fixed on motor on the supporting plate by upper and lower axle pad and shaft retaining ring, and motor transmission shaft drives by shaft coupling and detects the bobbin rotation.Because annex is many, complex structure is subjected to the influence of various factors, is prone to fault, and maintenance is trouble also.Detect bobbin in addition and adopt the elastomeric material sealing, also exist ageing of rubber and material and tear the phenomenon that rubber leaks dust.

Summary of the invention is to overcome shortcomings such as the ZXK type hinders the complex structure that rotatable level-sensing device exists in the prior art, and easy break-down keeps in repair difficulty, and encapsulant is aging, and the utility model provides a kind of rotary charge level controller.The technical scheme that its technical matters that solves the utility model adopts is: be provided with support in the structure; motor; back-moving spring; microswitch; detect bobbin; detection lug; protection tube; and outside motor, be provided with the shell that constitutes by shell block and cap; connecting circuit board on the Gu Ding support in the enclosure; on circuit board, be provided with relay; line bank; pilot lamp; protection tube is connecting sealing socket, sealing socket and the ripple spring that is connected successively with it; the stainless steel sealing gasket; the seal head that is lined with poly-polytetrafluoroethylsealed sealed of graphite by trip bolt in detecting that bobbin is fixed as one has constituted sealing mechanism.The rotary charge level controller of the utility model is compared its advantage with the ZXK type blocking rotary type level-sensing device in the prior art to be had, 1, owing to motor transmission shaft directly is connected with the detection bobbin, no intermediate transmission mechanism, motor are suspended state in shell, do not have other fixture, only establish a microswitch, it is simple in structure, easy break-down not, and failure rate is reduced to more than 95%, need not maintenance, long service life.2, owing to the improvement of structure, part significantly reduces, and cost of raw and processed materials has reduced by 25%, has reduced cost.3, because simple in structure, movable piece is few, and instrument function is improved, and detection lug moment is reduced to by 2 newton or less than 1 newton, can also adjust arbitrarily.4, the elastic force by the ripple spring is pressed in the stainless steel sealing gasket on the seal head that is lined with poly-polytetrafluoroethylsealed sealed of graphite, and good sealing effect has solved the problem of aging with the elastomeric material sealing.

Description of drawings Fig. 1, be the structural representation of the rotary charge level controller of the utility model.Fig. 2, be that the A of (being desheathing 1 cap) among Fig. 1 is to structural representation.Fig. 3, be shell 1 with support 2 and motor 3 with detect the structural representation that bobbin 6 is connected.Fig. 4 is the right view of Fig. 3.Fig. 5, be the synoptic diagram of sealing mechanism.

Embodiment has further understanding for structure and the principle to the rotary charge level controller of the utility model, and details are as follows in conjunction with embodiment of the present utility model:

Embodiment, rotary charge level controller.

With reference to accompanying drawing 1,2,3,4,5, the structure of the rotary charge level controller of the utility model is, constitutes shell 1 by shell block and cap, is provided with in shell 1 by three two supports 2 that connect the right angle flap shape that short logical bolt and shell 1 fix.Motor 3 is located in the shell 1, is being connected back-moving spring 4 on support 2 and motor 3 outer walls.On support 2, be fixed with a microswitch 5 and circuit board 10, be fixed with relay 9, line bank 11 and two pilot lamp 12 in the top of circuit board 10.The transmission shaft of motor 3 is directly pegged graft with detecting bobbin 6, and is screwed, and motor 3 is suspension in shell 1.Detect bobbin 6 ends and fixing detection lug 7; be with two ends and have external thread detecting bobbin 6 outsides, in rolling bearing is arranged, be welded with the protection tube 8 of flange and heat radiator on the outer wall; one end of protection tube 8 is threaded with shell 1, and the other end is being fixed sealing socket 13 by coupling nut.Sealing socket 13 and the ripple spring 14 that is being connected successively with it, stainless steel sealing gasket 15, the seal head 17 that is lined with poly-polytetrafluoroethylsealed sealed 16 of graphite by trip bolt 18 in detecting that bobbin 6 is fixed as one has constituted sealing mechanism.

The principle of work of this rotary charge level controller is: 3 work of energized rear motor, drive and detect bobbin 6,360 ° of rotations of detection lug 7 dos, pilot lamp 12 green lights in the display circuit are bright, back-moving spring 4 and limited post on the support 2 are controlled at certain moving range with motor 3, make the microswitch 5 on the support 2 remain normally open.When material in the feed bin increases when touching detection lug 7, the controller normal rotation is obstructed, because the transmission shaft of motor 3 directly is connected with detection bobbin 6, motor 3 is in suspended state with respect to shell 1, detection lug 7 be subjected to material power, force motor 3 skew, the outer wall of motor 3 promotes microswitch 5, motor 3 quits work, the green light of pilot lamp 12 relay 9 that goes out is started working in the display circuit, and the red light of pilot lamp 12 is bright in the display circuit simultaneously.When material moves down, detection lug 7 breaks away from material, controls resistance disappears, motor 3 is returned to the origin-location by the pulling force of back-moving spring 4, make the microswitch 5 on the support 2 keep normally open again, motor 3 works on, and the green light of pilot lamp 12 is bright, simultaneously relay 9 red light that quits work goes out, and reaches the purpose of control and monitoring thing position thus repeatedly.

Claims (4)

1; a kind of rotary charge level controller; it includes support (2); motor (3); back-moving spring (4); microswitch (5); detect bobbin (6); detection lug (7); protection tube (8); it is characterized in that it also includes the shell (1) that is made of shell block and cap that is provided with outside motor (3); the circuit board (10) that on the support (2) of shell (1) internal fixation, is connecting; on circuit board (10), be fixed with relay (9); line bank (11); pilot lamp (12); the sealing socket (13) that is being connected with protection tube (8) by coupling nut, and sealing socket (13) and the ripple spring (14) that is connected successively with it; stainless steel sealing gasket (15); in detecting that bobbin (6) is fixed as one, be lined with the sealing mechanism that the seal head (17) of graphite poly-polytetrafluoroethylsealed sealed (16) constitutes by trip bolt (18).

2, rotary charge level controller according to claim 1 is characterized in that the transmission shaft of motor (3) directly is connected with detection bobbin (6), and motor (3) is suspension in shell (1), and motor (3) skew promotes microswitch (5).

3, rotary charge level controller according to claim 1 is characterized in that an end of back-moving spring (4) is connected on the support (2), and the other end is connected on the outer wall of motor (3).

4, rotary charge level controller according to claim 1 is characterized in that establishing a microswitch (5) on support (2).

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