Simple liquid flow control device

Abstract

The utility model discloses a simple liquid flow control device. The simple liquid flow control device comprises a vertically-arranged inverted-U-shaped movable support (12), a floating body (4) fixed to one side end of the movable support and a flow control mechanism on the other side of the movable support. The flow control mechanism comprises an upper gear (91) fixed to the upper portion of the movable support and connected with a motor (7), a lower gear (92) fixed to the lower portion of the movable support and connected with an encoder (6), a belt (8) connected with the upper gear and the lower gear, an upper limiting switch (16) and a lower limiting switch (17), and the liquid level sensor (13) and the controller (15) are fixed on the belt and are positioned between the upper limit switch and the lower limit switch. The flow control device is simple in structure, convenient to operate, low in use cost, long in service life and suitable for liquid with impurities, medicament deposition or corrosivity in flow control liquid, and a gate valve does not need to be used for control; the liquid outlet flow can be adjusted, and the constant flow can be kept.

Description

TECHNICAL FIELD

[0001] The utility model relates to flow control technical field, concretely is a simple liquid flow control device and liquid flow automatic control box. BACKGROUND

[0002] The liquid flow control device currently used mainly has: piston type flow control valve, its precision is high but easy to appear wear and leak, the precision of peristaltic pump is high but is not suitable for intermittent use. The existing flow control device mostly is through the flow signal feedback of cooperation flow detection device control gate valve opening degree, or not stop switching gate valve reaches the purpose of controlling flow, such as turbine flowmeter, it is very troublesome to clean the turbine when using, and if not cleaning, precision will be affected, ultrasonic flow controller, its anti-interference ability is poor, is easily affected by bubble, scale, pump, etc. Ultrasonic noise leads to precision deterioration, and the measurement line of ultrasonic flowmeter is more complex and easy to damage, the principle of electromagnetic flow controller is complex, the structure is exquisite, the price is high, the use cost is high, when there is impurity or medicine deposition in the flow control liquid or corrosive, precision will decrease or be easy to damage, the use cost is high. SUMMARY

[0003] Based on the above-mentioned technical problems, the utility model provides a simple structure, convenient operation, low use cost, long service life, no need to use gate valve suitable for simple liquid flow control device and control box of liquid flow control.

[0004] The utility model is realized through the following technical schemes:

[0005] A simple liquid flow control device, including the movable support of vertical setting inverted U type, the float of fixed in movable support one side end and the flow control mechanism of other side,

[0006] The flow control mechanism includes the upper gear of fixed in movable support upper portion connection motor, the lower gear of fixed in movable support lower portion connection encoder, the belt of connection upper gear and lower gear, the upper limit switch and lower limit switch of setting respectively on the belt, the liquid level sensor of fixed in the belt between upper limit switch and lower limit switch, controller, motor, encoder, upper limit switch, lower limit switch, liquid level sensor are connected with controller electricity respectively.

[0007] Further, the liquid flow control device further includes the L-shaped mounting bracket for mounting motor or encoder fixed on the movable support.

[0008] Further, the liquid flow control device further includes the connecting rod mechanism for fixing the liquid flow control device.

[0009] Further, the connecting rod mechanism is a parallelogram connecting rod mechanism, one side of which is fixed on the liquid tank through a hinge and the other side end is connected with the movable support through a hinge.

[0010] Further, the liquid tank comprising an internally arranged float valve below which a liquid outlet hose is arranged and the simple liquid flow control device arranged on the liquid tank, the float is arranged in the liquid tank and the other side of the movable support is arranged outside the liquid tank.

[0011] The utility model has the advantages of simple structure, convenient operation, no need of using gate valve control, ability of adjusting liquid outlet flow size and keeping constant flow, low use cost, long service life, strong anti-interference ability, and especially suitable for flow control liquid with impurities or medicine deposition or corrosive liquid flow control.

[0012] The utility model discloses simple structure, convenient operation need not using gate valve control, can adjust the liquid outlet flow size and keep constant flow, and low use cost, long life, strong anti-interference ability, especially suitable for the flow control liquid with impurity or medicine deposition or corrosive liquid flow control. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the structure schematic view of the utility model liquid flow control device (motor and controller are not shown);

[0014] Figure 2 It is the structure schematic view of the utility model liquid flow automatic control box;

[0015] Figure 3 It is Figure 2 A schematic view. DETAILED DESCRIPTION

[0016] In order to realize the following will be combined with the drawings of the embodiments of the utility model, the technical scheme in the embodiments of the utility model is clearly and completely described, obviously, the described embodiments only are a part of the embodiments of the utility model, and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the range of protection of the utility model.

[0017] Referring to Figure 1 And Figure 2 A simple liquid flow control device, comprising a vertically arranged inverted U-shaped movable support 12, a float 4 fixed on one side end of the movable support and a flow control mechanism on the other side;

[0018] The flow control mechanism comprises an upper gear 91 fixed on the upper part of the movable support and connected with the motor 7, a lower gear 92 fixed on the lower part of the movable support and connected with the encoder 6, a belt 8 connected with the upper gear and the lower gear, an upper limit switch 16 and a lower limit switch 17 arranged on the belt respectively, a liquid level sensor 13 fixed on the belt between the upper limit switch and the lower limit switch, and a controller 15, wherein the motor, the encoder, the upper limit switch, the lower limit switch, the liquid level sensor and the controller are electrically connected respectively.

[0019] In order to make the liquid level difference of the liquid flow control device stable, an L-shaped mounting bracket 5 is arranged to fix the motor or the encoder on the movable support 12, and the movable support 12 is movably connected with the connecting rod 2 through a hinge, one side of the connecting rod is fixed on the liquid tank 1 through a fixed plate 2, and a parallelogram plane connecting rod structure is formed, and the movable support can move up and down freely.

[0020] Referring to Figure 2 and Figure 3 , the simple liquid flow control device is arranged on the liquid tank, the floating body is arranged in the liquid tank, and the other side of the movable support is arranged outside the liquid tank.

[0021] The working principle and operation method of the utility model are as follows: the liquid inlet pipe is connected to the liquid ball valve of the liquid tank, the liquid ball valve controls the liquid in the liquid tank, the power supply is turned on, the given amount is set on the controller, the start button is pressed, the motor drives the belt to make the outlet of the liquid outlet hose descend, the liquid sensor marks the "0" position and continues to descend when the liquid is sensed, when the outlet of the liquid outlet hose is lower than the liquid level of the liquid tank, the liquid starts to flow out, the corresponding position (corresponding height) corresponds to the corresponding liquid flow rate, the height difference between the outlet and the liquid level determines the liquid flow rate, the floating block descends along with the descending liquid level during the liquid outflow process, thereby driving the flow control mechanism to keep a certain height difference with the liquid level to keep the liquid flow rate constant, during use, if the given amount needs to be adjusted, the belt can be lifted and lowered to further control the lifting and lowering of the liquid outlet by controlling the forward and reverse rotation of the motor.

[0022] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A simple liquid flow control device, characterized by: The simple liquid flow control device comprises a movable support (12) in the shape of an inverted U arranged vertically, a floating body (4) fixed to one end of the movable support and a flow control mechanism fixed to the other end of the movable support. The flow control mechanism comprises an upper gear (91) fixed to the upper part of the movable support and connected to a motor (7), a lower gear (92) fixed to the lower part of the movable support and connected to an encoder (6), a belt (8) connecting the upper gear and the lower gear, an upper limit switch (16) and a lower limit switch (17) arranged on the belt respectively, a liquid level sensor (13) fixed to the belt between the upper limit switch and the lower limit switch, and a controller (15), wherein the motor, the encoder, the upper limit switch, the lower limit switch and the liquid level sensor are electrically connected to the controller respectively.

2. A simple liquid flow control device according to claim 1, wherein: The liquid flow control device further comprises an L-shaped mounting bracket (5) fixed to the movable support for mounting the motor or the encoder.

3. A simple liquid flow control device according to claim 1 or 2, wherein: The liquid flow control device further comprises a connecting rod mechanism (3) for fixing the liquid flow control device.

4. A simple liquid flow control device according to claim 3, wherein: The connecting rod mechanism is a parallelogram connecting rod mechanism, one side of which is fixed to the liquid tank through a hinge and the other side is hinged to the movable support.

5. A simple liquid flow automatic control box, characterized in that: The simple liquid flow control device comprises a liquid tank (1) provided with a floating ball valve (10) and a liquid outlet hose (11) below the floating ball valve, and the simple liquid flow control device as claimed in any one of claims 1 to 4 arranged on the liquid tank, wherein the floating body is arranged inside the liquid tank and the other side of the movable support is arranged outside the liquid tank.

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