JPH02127299A - Fluid feeder - Google Patents

Abstract

PURPOSE: To provide a hand-held easy-to-use device of high accuracy by energizing a solenoid when a battery power source supplies the power to a measuring device, and releasing a latch device by the solenoid when a predetermined amount of fluid has been dispensed. CONSTITUTION: When a predetermined amount of fluid is dispensed, a solenoid 32 is driven, and when a release trigger 34 is pulled to the right side against a return spring 36, a self-locking ball 37 is dropped downward on a slant face 32a of the solenoid 32. As a result, an actuator sleeve 38 is movable to the left side, and the energy accumulated on a spring 31 is released, whereby an actuator 40 of a shut valve is pulled. When an operator manually pushes the actuator sleeve 38 before a liquid dispenser is operated, the spring 31 is compressed until the self-locking ball is engaged with an internal groove 38a formed on the actuator sleeve 38. As a result, the release trigger 34 is moved forward by the weak force applied by the spring 36, and the actuator sleeve 38 and the actuator 40 are locked.

Description

[Detailed description of the invention] (Industrial application field) This invention is a fluid supply bag @ (fluid dispense bag)
(singdevice).

Various types of fluid supply devices are known. Gas station pumps supply fluid and measure the amount supplied, and stop when a predetermined supply amount is reached. Similarly, manual dispensing devices have been used for many years to fill automobiles and other mechanical devices with oil and/or grease.

In this manual feeding device, the feeding amount is entered into the feeding device using a mechanical dial, and that amount is fed. Such devices may not be able to meet desired requirements because the type of unit representing the amount of fluid supplied cannot be easily changed. Also, the aforementioned units are not as accurate as desired. Additionally, these units are fairly complex and often require repair due to leakage or breakage.

Therefore, it is an object of this invention to provide a highly accurate, hand-held,
It is an object of the present invention to provide a fluid supply device that is easy to use, highly reliable, and inexpensive to manufacture. Another object of the invention is to provide a fluid supply device which is capable of providing information about the total volume delivered by the system in addition to the volume delivered in a particular operation, and which allows measurement units to be easily converted in the field. It is to be.

(Summary of the Invention) The fluid to be supplied is
d) Flow through a fluid motor with a rotating housing with a pump and lobes (Iobed). The pump and housing work together to form a positive displacement pump.
displacement I)UIIID). This positive displacement pump can efficiently and accurately measure the amount of fluid flowing through it. A magnet is attached to the shaft of the fluid motor. This magnet is detected by a reed switch provided in the housing of the fluid motor. The reed switch counts the number of revolutions of the fluid motor proportional to the amount of fluid supplied through the fluid motor. A suitable electronic circuit converts the rotational speed of the fluid motor into the amount of fluid supplied. This amount is compared with a set amount previously entered via a keypad provided on the dispensing device.

When a preset time is reached, a 20-50 millisecond electrical pulse is sent to the solenoid. The solenoid opens the valve and causes the valve to close during its short energization time. The valve has previously been manually pressed against a fairly strong spring by the operator. Thus, the force required to securely close the valve is provided by the operator when opening the valve, and that force is stored in the spring.

In this way, the solenoid simply acts to release the spring, and the valve closes under its own power.

The above objects and other objects of the invention will become more apparent from the embodiments of the invention described below with reference to the accompanying drawings.

(Example) Hereinafter, an example of a liquid device according to the present invention will be described based on the accompanying drawings. The fluid supply bag N10 according to the invention includes a fluid motor housing 12.

The fluid motor housing 12 has a positive displacement fluid motor 4 therein. The fluid motor 4, shown in detail in FIG. 4, has a central rotor 16 and a surrounding rotating housing.
ino) has 18. This type of fluid motor is well known and will not be described in further detail below.

However, this type of fluid motor is particularly suitable for making precise measurements in the fluid device according to the invention.

Due to the construction of the motor, no rotating seals are required, so the liquid supply system is virtually leak-free. Other types of positive displacement motors, such as gear types, may also perform the desired function. The rotor 16 has a shaft 20,
A rotating magnet 22 is arranged at the end of the shaft 20. The rotating magnet 22 is attached to the fluid motor housing 1
Reed switch 24 via coil 26 provided in 2
Add a trigger to. Fluid enters from boat 28 and exits from port 30.

As shown in FIG. 1, the device stores energy in spring 31 when the valve (not shown) is in the open condition. Once a predetermined amount of fluid is supplied,
Solenoid 32 is actuated, pulling release trigger 34 to the right against return spring 36. Then, the detent balls 37 fall downward on the slope 32a of the solenoid 32. This allows the actuator sleeve 38 to move to the left, releasing the energy stored in the spring 31 and pulling the shut valve actuator 40. The operator manually pushes actuator sleeve 38 before activating the liquid supply device. This allows the detent ball to move into the internal groove 38 provided in the actuator sleeve 38.
Spring 31 is compressed until it engages a. As a result, release trigger 34 is moved forward by a weak force applied by spring 36, thereby locking actuator sleeve 38 and actuator 40 in the position shown. The valves that control fluid flow may be of any suitable type, one embodiment of which is shown in FIG.

FIG. 3 shows a block diagram of the electronic circuit of the fluid supply device according to the invention. An electronics package, designated by the reference numeral 42, is located at the top of the fluid motor housing 12. The electronic package 42 includes a central processing unit (CPU).
) 44, liquid crystal or similar display 46
, and the connection part with the reed switch 26, solenoid 32
and a keypad 48. The electronic components used in this fluid supply device are generally conventional and will not be described in further detail below. In particular, the user enters via keypad 48 the amount of fluid he wishes to dispense. Once the reed switch 26 has delivered the appropriate number of pulses to the CPU 44, a 20-50 millisecond electrical burst signal is sent to energize the solenoid 32 and open the valve.

The display 46 shows the amount being dispensed. Note that the amount displayed may be the amount that has been supplied up to that point, or it may be the cumulative amount that has been supplied by the fluid supply device from the time when the container containing the fluid to be supplied is filled until that time. . By programming the CPU 44, the weighing unit can be changed to, for example, Fort (q
You can change from uarB to liters as you like.

Of course, if necessary, the fluid motor 14 can also be used to drive a small generator to charge the battery. In this way, the service life of the fluid supply device according to the invention can be extended almost indefinitely. This example is the second
As shown in the figure.

The device in the figures is equipped with a digital display capable of displaying both the volume of fluid dispensed and the set volume entered via the keyboard.

The description now turns to another embodiment shown in FIG.

Fluid supply device 110 has a motor housing 112 that houses a fluid motor 114 therein. Fluid motor 114
is the same as the fluid motor 14 used in the embodiment of FIG. 1, and a cross-sectional view thereof is shown in FIG. Shaft 120 of fluid motor 114 has a magnet 122 at one end.

This rotation of magnet 122 is detected by reed switch 126. Placing a coil 124 on the outside of the rotating magnet 122 forms a small alternator. The output of this alternator is rectified and used to charge the circuit's battery. Inlet boat 128 directs incoming fluid to fluid motor 114;
Outlet boat 130 directs fluid to any appropriate location.

A valve assembly 1150 having a fluid valve 152 is shown. Fluid valve 152 is biased closed by spring 131, which stores a large amount of energy. Fluid valve 152 is actuated by hand trigger 154 having a pivot on hinge 156 . hand trigger 1
At the same time as 54 is closed, fluid valve 152 is opened, fluid begins to flow, and spring 131 is precompressed. When the hand trigger 154 closes, the operator switches on the trigger latch 158 and locks the slot 160 into the pin 162.
Put it on. Bottle 162 holds hand trigger 154 closed and fluid valve 152 open. Fluid supply continues until a preset amount is reached. Electronics package 142 sends an electrical pulse to solenoid 132 , which pulls actuator band 140 and releases trigger latch 158 .

The embodiments described above are merely illustrative and do not limit the invention. Accordingly, the fluid supply device according to the invention can be implemented in any form without departing from the spirit and scope of the invention.

[Brief explanation of the drawing]

The drawings show an embodiment of the fluid supply device according to the present invention, FIG. 1 is a sectional view of the fluid supply device, FIG. 2 is a diagram showing another embodiment of the fluid supply device, and FIG. 3 is a diagram showing the fluid supply device. FIG. 4 is a block diagram showing the electronic circuit of FIG. 4, and a cross-sectional view of the fluid motor. 10.110...Fluid supply device 12...Fluid motor housing 14.114...Fluid motor 18...Rotating housing 20.120...Shaft 22...Rotating magnet 24.126...Lead Switches 26, 124... Coils 28, 30... Boat 31131... Spring 32, 132... Solenoid 34... Release trigger 36... Return spring 38... Actuator sleeve 40... Actuator 42.142...Electronic package 46...Display 48...Keypad 112...Motor housing 122...Magnet 128...Inlet boat 130...Outlet port 140...Actuator band 150... - Valve device 152...Fluid valve 154...Hand trigger 158...Trigger latch

Claims (11)

[Claims] (1) A fluid supply device for supplying a predetermined amount of fluid, which includes a rotary positive displacement measuring device, a valve connected to this measuring device, and a drive for opening this valve. a device, a biasing device for biasing the valve in a closed condition, a latching device for latching the valve in an open condition, and a predetermined amount of fluid flowing through the measuring device; a release device for releasing the latching device; and a battery power source; the measuring device having an inlet and an outlet; the valve having an inlet in an open state and a closed state; has a solenoid, this solenoid is not energized,
The fluid supply device wherein the battery power supply powers the measurement device and energizes the solenoid, the solenoid releasing the latching device when a predetermined amount of fluid is delivered. (2) The fluid supply device according to claim 1, wherein the drive device has a handle that can be driven manually. (3) The fluid supply device according to claim 1, wherein the measuring device is provided with a fluid turbine having a shaft. (4) The fluid supply device according to claim 3, wherein the measuring device counts the number of rotations of the fluid turbine. (5) The fluid supply device according to claim 4, further comprising a display device for displaying the amount of fluid supplied. (6) The fluid supply device according to claim 5, further comprising a keyboard device for inputting the predetermined amount of fluid into the measuring device. (7) The measuring device includes a magnet on the shaft;
A fluid supply according to claim 4, further comprising a reed switch that is close to the magnet but not in contact with the fluid, and the reed switch is adapted to count the number of rotations of the shaft. Device. (8) The fluid supply device according to claim 3, wherein the fluid turbine is a fluid motor having lobes. (9) The fluid supply device according to claim 1, further comprising a device for manually releasing the latching device. (10) The fluid supply device according to claim 3, wherein the measuring device counts the number of rotations of the fluid turbine. (11) The measuring device includes a magnet on the shaft and a reed switch that is close to the magnet but not in contact with the fluid, and the reed switch counts the number of rotations of the shaft. A fluid supply device according to claim 10.