JPS5852519A - Driving device of float type water-level detecting device - Google Patents

Abstract

PURPOSE:To execute two-position detection of a water-level exactly without generating chattering, by quickly operating a lead switch when the water-level has reached the ascending limit and the descending limit. CONSTITUTION:A float 1 is insert-provided in a housing so that it can ascend and descend freely, and a driven body 3 ascends and descends following the float 1. On this driven body 3, a moving adsorbing part 5 is provided, and so as to be opposed to the moving adsorbing part 5, fixed adsorbing bodies 4a, 4b are provided by being separated at a prescribed interval. In this state, when the water-level increases and has reached a prescribed ascending limit, the moving adsorbing part 5 is detached from the lower fixed adsorbing body 4b, simultaneously contacts with the upper adsorbing body 4a, and operates a lead switch 7. Also, when the water-level decreases and has reached a prescribed descending limit, the moving adsorbing part 5 is detached from the adsorbing body 4a, simultaneously contacts with the adsorbing body 4b, and operates the switch 7. In this way, two-position detection of the water-level can be executed exactly without generating chattering.

Description

DETAILED DESCRIPTION OF THE INVENTION Regarding the drive device of the present invention a1 float type water level detection device,
The reed switch drive device is configured to operate in conjunction with a predetermined upper limit and lower limit of the water level, and the second position of the water level is reliably detected without chattering, especially for automatic control of submersible pumps. It is suitable for use.

゛Hereinafter, the drawings showing the embodiments will be explained.
Float fitted in 1/C so that it can be raised and lowered in J body 2, 8
r; [70- This is a driven body that moves up and down inside the canister 2 following the up-and-down movement of the tor.For example, as shown in FIG. , or r [second
As shown in the figure, it is formed into a rod shape and fits with the outer periphery of the float L, or as shown in Fig. A movable suction member 6 and a VCrl stopper 6 are attached to the guiding part to form a pressure-receiving part that supports the funnel 1 and its outlet body 1'. The upper blade Ki reed switch 7 of the common body 2 is mounted, and the lower fixed suction body 4a and the lower fixed suction body 4b are arranged at a predetermined interval so as to face the movable suction part 5 of the driven body 8 from above and below. When the reed switch 7 opens and closes due to changes in magnetic action due to the approach and separation of the movable adsorption section 5, the approach/separation base of the movable adsorption section 5 is held by the upper fixed adsorption body 4a and the lower fixed adsorption body 4bvC. It will be done.

The attachment body 4a and the lower fixed adsorption body 4b are made of soft iron, and as shown in FIG. By doing so, the normally open reed switch 7 is opened, and by contacting the lower fixed adsorption body 4b against the upper fixed adsorption body 4alC, the reed switch 7 is returned to the open state. Alternatively, the lower fixed adsorption body 4a and the lower fixed adsorption body 4b are made of magnets, and the movable adsorption part 5 is made of soft iron, so that as shown in FIG. By contacting the lower fixed adsorption body 4a against 4b vc, the normally open reed switch 7 is opened δ, and by contacting with the lower fixed adsorption body 4b against the lower fixed adsorption body 4aK, the reed switch 7 is opened. Return to closed state. Alternatively, as shown in FIG.
The normally open reed switch 7 is closed by contact with the lower fixed absorbent body 4a, and the reed switch 7 is returned to open by contacting the lower fixed absorbent body 4b against the lower fixed absorbent body 4a. It will be done. Then, due to the separation action between the lower fixed adsorbent 4b and the movable adsorbent 5, the buoyancy of the float 1 occurs when the water level reaches a predetermined rising limit, and the lower fixed adsorbent 4b At the same time as it separates, it contacts the lower fixed adsorption body 4a. Also,
The separation action r1 between the upper fixed adsorption body 4a and the movable adsorption part 5 is caused by the pressure-receiving action on the stopper 6 at the time when the water level reaches a predetermined lowering limit, causing the movable adsorption body s5 to separate from the upper fixed adsorption body 4a and at the same time the lower part Fixed aIF holiday 4b
to contact. In this way, the reed switch 7 can maintain a stable vCC in the open or closed state.

8rl Liac is a living body, and the lead wires led out from each contact piece 7& and 7b of the reed switch 7 are installed in the side arm ll, which is provided with a non-contact type switching element configured with an electronic circuit. The input side 1 of the switching element 80 is configured to be able to move up and down as the water level increases and decreases, and is connected to the root of the lateral arm 11 by means of an upper end σ fitting or an IJ screw-in structure.

When used for automatic operation control of the submersible pump 18, the tip of the a1 lateral arm 11 is used as a mounting part that overlaps with the electric wire outlet 14 of the upper blade part of the pump, and nine vertical holes 15 are provided in the center of the mounting part. A lead wire from the output side of the switching element 8 is led out from a side hole 16 that communicates with the vertical hole 15 and the VC, and is connected to one line of the power cord. In addition, the other line of the power cord is directly connected to the motor side drawer tie. Flange-shaped edge 17vCr around the vertical hole 16 [Backing 1 with bolt holes arranged and made in the same shape as the flanged edge 17
8 and restraining cover 19 on the flanged edge 17, and by screwing the mounting bolt 20, the side arm 11 is fixed to the upper part of the submersible pump 1B, and the housing 2 is fixed to the upper part of the submersible pump 1B. Figure 6 (A) (B) installed vertically on the side force
The condition is as follows.

To explain the operation mode of this case with reference to Fig. 7 (J/C), even if the water level in the tank increases and the float l in the variable body 2 rises with the driven body 8 as shown in Fig. 7 (A), The a movable suction part 5 maintains the suction state with the F section fixed suction body 4b until reaching the upper limit, and reaches the predetermined upper limit 61vc.
As shown in FIG. 7(B), the movable attraction part 5 of the driven body 8 is pulled N1 from the lower fixed attraction body 4b by the buoyancy of the float 1, and is attracted to the upper fixed attraction body 4avc, as shown in FIG. 7(B), and is led by magnetic action. When the switch 7 is closed, the output circuit of the switching element 8 is made conductive by the VC, and the submersible pump 181'2 is operated to pump water from the tank to the water port 2.
The water is sucked in through the tank 1 and drained out of the tank through the discharge port 22. Even if the water level in the tank decreases due to the drainage action of the submersible pump 18 as shown in FIG.
Since the dynamic adsorption cap 5 maintains the adsorption state with the lower fixed adsorption member 4d and the reed switch 7 remains in the abruptly closed state, the pump 18 is activated and the drainage action is performed as shown in Figure 7 (D). When the movable adsorption part 5 is pulled away from the upper fixed adsorption body 4a and attracted to the lower fixed adsorption body 4blC, the reed switch 7 is opened and restored due to the change in the VC magnetic action, and the output circuit r of the switching element 8 is cut off. The operation of the pump 18 will be stopped. In this way, the automatic operation control of starting the pump at the predetermined rise limit 11 of the water level in the tank and stopping the pump at the predetermined fall limit 12 is performed by a float-type water level detection device that has a second water level detection function. It will be destroyed.

Unlike the above usage example, it is also possible to install a submersible pump inside the tank and supply water into the tank from a liquid supply source outside the tank. In this case, the arrangement of the upper fixed adsorbent 4a, the lower fixed adsorbent 4b, and the movable adsorbent part 5 is as shown in FIG. -LJA- If it reaches the eyes, it will stop the pump and interrupt the water supply. In either case, float 1 follows. Then, by setting the effective movement of 70-to1 to an appropriate value, 1. Water level rise limit 11 and fall limit! 2
It is possible to set the distance from the water level, that is, the water level, to an arbitrary value ll'c.

Conventionally, the magnet 5' provided on the water level detection device port, which is used to control the operation of a submersible pump, and the float 1'' that moves up and down along the lifting guide 2'' as the water level increases and decreases,
Open the reed switch 7' in the lifting guide 2 at the predetermined rising limit or falling limit as shown in Figure (A). When the water level falls or rises as shown in Figure (B), the magnet
When ' moves away, the reed switch 7 is returned to open, and the opening/closing operation of the reed switch 7 is transmitted to the motor circuit of the pump via the transformer and relay. In this method, if the water level drops even slightly from the predetermined upper limit, the magnet 6' will move away from the reed switch l and the pump will stop. It is necessary to install it. Another disadvantage is that chattering occurs due to ripples on the water surface.

Compared to the conventional water level detecting device of this type [K], the water level detecting device WtVca equipped with the device of the present invention has the following advantages. 1st V
c. At a predetermined rising limit of the water level, the driven body a becomes fixed by the attraction force of the magnet, and at a predetermined falling limit of the water level, r
[70-The reed switch and the driven body are separated from the reed switch by a large distance, and the driven body is fixed by the attraction force of the magnet, so even if ripples occur on the water surface, the reed switch remains closed or the open state is maintained. , without causing chattering. 211C, since the reed switch is switched in conjunction only at the float's rising limit or a falling limit, it is possible to reliably detect the second water level with a single device. Moreover, the distance between the rising limit and the falling limit of the water level, that is, during the water level control, is set to an appropriate value during the effective movement of the float. Figure 6 (A) #Side view showing the state in which the water level detection device equipped with the device of the present invention is attached to a ready-made submersible pump; CB) rx longitudinal sectional side view of the main part;
Fig. 7 (A) No. 1 to (D) D An explanatory diagram showing the operating mode of the device of the present invention, Fig. 8 (A) and (B) f'l Water levels used in conventional submersible pumps Detection device operation 1
It is an explanatory diagram showing an island.

■... Float, 1'... Derived body, 2... Mantle,
8...Followed body, 4a...Upper fixed 1 adsorption body, 4b.
・・Shimogori fixed suction body, 5・Machi uJ suction part, 6・・
Stopper, 7...Reed switch.

In particular, 1-Applicant Tsurumi Seisakusho Co., Ltd. Angel Industries Co., Ltd. 117-CB) Ri-on? Yo YM 77
/7\

＼Calculation 5 diagram

Claims (1)

[Claims] 1. N body 2 internal RC liftable VT European style float 1
The important part of the driven body 8 that is fitted with the fixed adsorption body is a movable suction part 6 that faces the fixed adsorption body described later, and the guiding part VC is provided with a stopper 6 to serve as a pressure receiving part that supports the float l. In the water level detection equipment in which the reed switch 7 is installed and the reed switch 7 is opened/closed 1 by changing the magnetic action due to the approach/separation of the movable suction part 5, the upper fixed adsorption body 4- a and the upper fixed adsorption body 4b (il- VC is arranged at a predetermined distance, and the movable section 5 of the SiJ subordinate body is arranged to face the movable section 5 from above and below, so that even if the water level increases, the predetermined rise limit is reached. The movable adsorption part 5 maintains the adsorption state with the fixed adsorption part 4b until the water level reaches the predetermined rise limit rc, and is separated from the upper fixed adsorption body 4b by the buoyancy of the float l. upper fixed adsorption body 4aV
When C is adsorbed, the reed switch 7 is operated to close due to a change in the relative position with respect to the movable adsorption section 5, and even if the water level decreases, the movable adsorption section 5
maintains an adsorption-like island with the upper fixed 1 pumping body 4a, and when the water level reaches a predetermined lowering limit, from the receiving action 1/C on the stopper 6 - from the L part fixed 1 pumping rest 4a When separated and adsorbed to the upper fixed adsorption body 4b, the rcniJ
f! A drive device configured to close a reed switch 7 by changing its relative position with respect to the hl and circulation unit 5. 2. Float 1 fitted with a VC that can be raised and lowered inside the mantle 2
The lower part of the subordinate body 8 that is fitted with the derived body 1' is set to the +iJ dynamic adsorption capital 5 facing the fixed bone suction rest, and a lost collar 6 is attached to the leading part of the derived body 1'. A reed switch 7 is layered on the two VCs of the housing 2, and the reed switch 7 is opened and closed by changing the aeration effect due to the approach and separation of the VC movable suction cap 5. r
c (In the water level detection device, the upper fixed adsorbent 4a
and the F fixed adsorption body 4b at a predetermined interval Vcr! &2 is installed to face the pump suction part 5 of the subordinate body 8 from above and below, so that even if the water level increases, the movable 1 pump 5 can be moved to the lower part 1 until it reaches the predetermined upper Jf4- limit. Maintaining the adsorption state with Hikibuki f 4b, the water level sword. When a certain rise limit VC is reached, the float 1 is separated from the lower fixed adsorbent 4b by the buoyancy of the float 1, and the -C upper fixed adsorbent 4alC is adsorbed, and the M-capable adsorbent 4alC is led by a change in its relative position with the adsorbing section 5. switch 7
In addition, even if the water level decreases, the movable suction part maintains the adsorption state with the two-part fixed adsorption body 4a until it reaches a predetermined lowering limit, and when the water level reaches the predetermined lowering limit VC. Then, the change in the same position above the pressure-receiving action VC on the stopper 6 will open the reed switch 7. Configured drive unit. 3. The main part of the conventional body 8 that fits into the float 2 is movable suction part 5 facing the fixed suction body described later, and a VCrI stopper 6 is attached to the guiding part. It serves as a pressure receiving part that supports the float 1, and a VCO reed switch 7 is attached to the two parts of the mantle 2, and an IC is installed so that the reed switch 7 is opened and closed by changes in magnetic action due to the approach and separation of the town #adsorption 6145. In the water level detection device, a lower fixed adsorbent 4a and a lower fixed adsorbent 4b are used.
are arranged at a predetermined interval so as to face the movable adsorption part 5 of the driven body 8 from above and below, so that even if the water level increases, the movable adsorption part 5 reaches the lower fixed adsorption member 4b by the time the water level reaches a predetermined rising limit. When the water level reaches a predetermined rising limit, it is separated from the lower fixed adsorbent 4b by the buoyant force of flow 1-1 and is forced to adsorb the FC on the upper fixed adsorbent 4a. The reed switch 7 is intercropped #IJ1 by changing the relative position with respect to the movable suction part 5 and the lower fixed suction body 4a, and even if the sitting position decreases, the movable suction part 5 remains in the suction state with the lower fixed suction body 4a until the predetermined lowering limit is reached. When the water level reaches a predetermined lowering limit, the upper fixed adsorbent 4a is moved by the pressure acting on the stopper 6.
The drive device is configured to move away from the lower fixed adsorption member 4 b to adsorb VC, and to close the reed switch 7 by changing the relative position with the movable adsorption unit 5 . 4. The key points of the driven body 8 that fit into the lead-out body 1' from the float 1, which is fitted in the mantle 2 so as to be movable up and down, can be opposed to the fixed adsorption body described later! A vI suction s5 and a VCO stopper 6 are attached to the guiding part to form a pressure receiving part that supports the OtI deriving body 1'. In a water level detection device in which a reed switch 7 is opened and closed by a change in magnetic action due to a separation Vt, an upper fixed adsorption member 4a and a lower fixed adsorption member 4b are arranged at a predetermined interval to control the movement of the driven member 8. Place the suction caps 5 facing each other from above and below, and even if the water level increases, the lower part is fixed by the buoyancy of the float 1 until it reaches a predetermined upper limit. When the water is separated from the adsorbent 4b and adsorbed onto the upper fixed adsorbent 4a, the reed switch 7 is opened due to a change in the relative position with respect to the suction body 5, and the water level decreases. Until the water level reaches a predetermined lowering limit, the movable suction part maintains the adsorption state with the upper fixed adsorbent body 4a, and when the water level reaches the predetermined lowering limit, the upper fixed adsorbent body 4a is moved by the pressure receiving action on the stopper 6. Separate from the lower fixed adsorbent ab
A drive device configured to close a reed switch 7 by changing the relative position of the VC and the movable suction capital 5 when the VC is adsorbed.