Novel liquid weightlessness type feeding machine
By introducing a detection system of phototransistor and laser ranging module in the liquid weightless feeder, combined with the control circuit, the automatic detection and control of liquid quantity is realized, and the problem of inaccurate liquid quantity control in the prior art is solved, and the problem of inaccurate liquid quantity control is improved. The degree of automation and efficiency of production.
Patent Information
- Application Number
- CN202420845500.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-23
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-04-23
AI Technical Summary
The existing liquid weightless feeders rely on human observation in liquid volume control, which is prone to too little or too much liquid volume due to insufficient experience or lack of responsibility, and the degree of automation is low, so accurate control cannot be achieved.
A new type of liquid weightless feeder including a hopper, solenoid valve, liquid pump, detection lamp, one-way air valve, regulation display mechanism, detection circuit and control circuit was designed, and the liquid was detected in real time using phototransistors and laser ranging modules. and automatically close the solenoid valve through the control circuit to promptly remind the staff. When the liquid volume reaches the set value, the feed solenoid valve is automatically closed to ensure that the quantitative liquid enters the next process.
It realizes accurate control of liquid quantity without manned operation, improves the degree of automation of production, ensures quantitative input and output of liquid raw materials, reduces artificial errors, and improves production reliability and efficiency.
Smart Images
Figure CN222189728U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of feeder equipment, in particular to a novel liquid loss-in-weight feeder. Background Art
[0002] Loss-in-weight feeder is a commonly used equipment in production. Its main structure includes hopper, electric valve or solenoid valve (electric valve is generally used for conveying control of solid raw materials, solenoid valve is generally used for conveying control of liquid raw materials), electric screw conveyor or liquid pump, etc. (electric screw conveyor is generally used for conveying control of solid raw materials, liquid pump is generally used for conveying control of liquid raw materials). When working, open the electric valve or solenoid valve on the hopper, so that the solid raw material or liquid raw material output from the previous process enters the hopper. When the amount of solid or liquid raw material in the hopper is sufficient, close the electric valve or solenoid valve, and then open the electric valve or solenoid valve at the lower end of the hopper, and the solid or liquid raw material flows out to the electric screw conveyor or liquid pump to output the raw material to the next process.
[0003] Although the existing liquid loss-in-weight feeder meets the production needs to a certain extent, it is limited by the structure and still has the following shortcomings that need to be solved. First, the amount of liquid entering the hopper is generally determined by the staff manually observing the liquid level of the transparent hopper or the liquid level of the liquid level indicator tube connected to the non-transparent hopper, so as to understand the amount of liquid entering the hopper. Then, when the amount of liquid is sufficient, the staff turns off the power switch of the solenoid valve on the hopper. In the above control mode, due to the staff's lack of experience or lack of work responsibility, the power switch will be turned off in advance or delayed, which will cause too little or too much liquid to enter the hopper, which will have an adverse effect on the subsequent process production. Second, after the liquid enters the hopper and the amount of liquid is sufficient, the staff cannot be prompted to turn off the power switch of the corresponding solenoid valve in time. The equipment has a low degree of automation and cannot achieve the effect of accurately controlling the feeding in the hopper. In summary, it is very necessary to provide a liquid loss-in-weight feeder that does not require manual operation by the staff and can automatically and accurately control the amount of liquid entering the hopper. Utility Model Content
[0004] In order to overcome the drawbacks of the existing liquid loss-in-weight feeder as described in the background due to structural limitations, the utility model provides a worker who can conveniently set the amount of liquid entering the hopper, and after the liquid raw material entering the hopper reaches the set amount, the feed solenoid valve can be automatically closed, and the worker can be prompted to perform corresponding operations, so that a certain amount of liquid raw material can enter the next process, thereby bringing convenience to the worker and realizing a new type of liquid loss-in-weight feeder with precise liquid raw material input and output control.
[0005] The technical solution adopted by the utility model to solve its technical problems is:
[0006] A novel liquid loss-in-weight feeder comprises a hopper, a solenoid valve, a liquid pump, a workbench, a detection lamp, and a one-way air valve, characterized in that it also has an adjustment display mechanism, a detection circuit and a control circuit; the hopper and the liquid pump are respectively installed at both ends of the workbench, the lower end and the upper end of the hopper are respectively installed with a liquid outlet pipe and a liquid inlet pipe, there are at least two solenoid valves, the upper end of the liquid inlet pipe is connected to one end of the first solenoid valve, the other end of the first solenoid valve is connected to the liquid output pipe of the previous production process, the lower end of the liquid outlet pipe is connected to one end of the second solenoid valve, the other end of the second solenoid valve is connected to the liquid inlet pipe of the liquid pump, and the liquid outlet pipe of the liquid pump is connected to the liquid input pipe of the next production process; there are two openings on the upper side of the hopper, and the one-way air valve is connected to the one-way air valve. The air inlet pipe and the detection light of the valve are respectively installed in the two openings; a support frame is provided outside the upper end of the hopper, and the adjustment and display mechanism includes an electric push rod, a photoelectric triode, a laser ranging module and a voltage display meter. The upper end of the electric push rod is installed on the side end of the support frame, and a fixing seat is installed at the lower end of the electric push rod. The photoelectric triode and the laser ranging module are installed on both sides of the lower end of the fixing seat; the voltage display meter, the detection circuit and the control circuit are installed at the inner end of the electric control box; the collector and the emitter of the photoelectric triode are electrically connected to the two signal input ends of the detection circuit respectively, the signal output end of the detection circuit is electrically connected to the signal input end of the control circuit, and the power output end of the control circuit is electrically connected to the power input end of the first solenoid valve.
[0007] Furthermore, the solenoid valve is a normally closed valve core solenoid valve.
[0008] Furthermore, the hopper is made of transparent plastic material.
[0009] Furthermore, a sealing rubber pad is installed at the outer end of the phototransistor, the light-receiving surface of the phototransistor and the outer end of the hopper are spaced apart, and the side end of the rubber pad is in sealing sliding contact with the outer end of the hopper.
[0010] Furthermore, the power output terminal of the laser ranging module is electrically connected to the power input terminal of the voltage display meter, and the detection head of the laser ranging module is located at the bottom and is aligned with the workbench.
[0011] Furthermore, the detection circuit includes an electrically connected resistor and a transistor, one end of two resistors are connected, one end of the third resistor is connected to the base of the transistor, and the collector of the transistor is connected to the other end of the second resistor.
[0012] Furthermore, the control circuit includes an electrically connected buzzer, a relay, and a transistor, the transistor collector is connected to the negative power input terminal of the relay, the positive power input terminal of the relay is connected to the control power input terminal, the transistor emitter is connected to the negative power input terminal of the buzzer, and the normally open contact terminal of the relay is connected to the positive power input terminal of the buzzer.
[0013] The beneficial effects of the utility model are as follows: the staff of the utility model can control the working mode of the electric push rod through the power switch, the electric push rod drives the height of the photoelectric triode at the side end of the hopper, and then sets the amount of liquid entering the hopper, and the staff can understand the liquid amount data in the set hopper in real time through the laser ranging module; under the joint action of the photoelectric triode, the detection circuit, and the control circuit, the staff can be notified in time when the amount of liquid in the hopper is sufficient, and the electromagnetic valve controlling the liquid inlet amount can be automatically closed, so that a certain amount of liquid raw materials enter the next process, thereby bringing convenience to the staff and achieving the purpose of precise liquid raw material input and output control. Based on the above, the utility model has a good application prospect. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0015] Figure 1 It is a schematic diagram of the overall and partial enlarged structure of the utility model.
[0016] Figure 2 This is a circuit diagram of the utility model. DETAILED DESCRIPTION
[0017] Figure 1 , 2As shown in the figure, a new type of liquid loss-in-weight feeder includes a power module W1, a power switch, a hopper 1, solenoid valves DC and DC1, a liquid pump M, a workbench 2, a detection lamp H, a one-way air valve 3, and also has an adjustment display mechanism, a detection circuit 4 and a control circuit 5; the lower ends of the hopper 1 and the liquid pump M are respectively welded to the left and right upper ends of the workbench 2, the lower end of the hopper 1 is a conical structure, and a liquid outlet pipe 101 and a liquid inlet pipe 102 are respectively welded at the lower end and the middle of the upper end of the hopper 1, there are two solenoid valves, and the liquid inlet The upper end of the tube 102 is connected to one end of the first electromagnetic valve DC1 via a threaded connection, the other end of the first electromagnetic valve DC1 is connected to the liquid output pipe of the previous production process via a pipeline, the lower end of the liquid outlet pipe 101 is connected to one end of the second electromagnetic valve DC via a threaded connection, the other end of the second electromagnetic valve DC is connected to the liquid inlet pipe of the liquid pump M via a pipeline, and the liquid outlet pipe of the liquid pump M is connected to the liquid input pipe of the next production process via a pipeline; there are two openings in the middle of the upper right side of the hopper 1, a one-way air valve 3 (external air can enter the hopper to prevent The air inlet pipe and the detection lamp H for generating negative pressure vacuum in the hopper are respectively sealed and installed in the two openings, and the air inlet pipe of the one-way air valve 3 and the luminous surface of the detection lamp H are located at the upper end of the hopper 1; a "Π" support frame 103 is welded to the outside of the middle of the upper end of the hopper 1, and the adjustment and display mechanism includes an electric push rod M1, a photoelectric triode Q1, a laser ranging module W2 and a voltage display meter V. The cylinder of the electric push rod M1 is vertically distributed and bolted to the middle of the left outer end of the support frame 103, and the push column of the electric push rod M1 is located at the lower part. A fixing seat 6 is welded at the lower end of the push column of the electric push rod, and a circuit board is glued to the right side of the lower end of the fixing seat 6. The photoelectric transistor Q1 is welded on the circuit board and the light-receiving surface of the photoelectric switch Q1 is located at the middle of the left outer end of the right side aligned with the hopper 1. The shell of the laser ranging module W2 is vertically distributed and installed on the lower side of the left end of the fixing seat 6; the voltage display table V, the detection circuit 4 and the control circuit 5, the power module W1 and the power switch of the adjustment display mechanism are installed in the electric control box 7, and the electric control box 7 is installed at the front right end of the workbench.
[0018] Figure 1 , 2As shown in the figure, the solenoid valves DC and DC1 are normally closed valve core solenoid valves (2W). The hopper 1 is made of transparent plastic. The outer end of the phototransistor Q1 is glued with an annular sealing rubber pad 8. The light-receiving surface of the phototransistor Q1 and the left outer end of the hopper 1 are separated by a very small distance. The right end of the rubber pad 8 (sealing the side end of the phototransistor to prevent the external light from adversely affecting the normal operation of the phototransistor) is in sealed sliding contact with the left outer end of the hopper 1. The power output ends 3 and 2 of the laser distance measuring module W2 and the power input ends of the voltage display meter V are connected by wires respectively. The detection head of the laser distance measuring module W2 is located at the bottom and is aligned with the left end of the workbench 1. The detection circuit includes resistors R1, R2, R3 and the transistor Q2 connected by circuit board wiring. The first resistor R1 and the second resistor R3 are connected at one end, the third resistor R2 is connected at one end to the base of the transistor Q2, and the collector of the transistor Q2 is connected to the other end of the second resistor R3. The control circuit includes a buzzer B, a relay K1, and a transistor Q3 connected via circuit board wiring, the collector of the transistor Q3 is connected to the negative power input terminal of the relay K1, the positive power input terminal of the relay K1 is connected to the control power input terminal, the emitter of the transistor Q3 is connected to the negative power input terminal of the buzzer B, and the normally open contact terminal of the relay K1 is connected to the positive power input terminal of the buzzer B. The power input end of the liquid pump M is connected in series with the two poles of the AC 220V power supply through the first power switch S, respectively, and is connected through wires. The power input end pins 1 and 2 of the power module W1 are connected to the two poles of the AC 220V power supply through wires, respectively. The power output ends 3 and 4 of the power module W1 are connected to the power input ends of the power switches S1 (pins 1 and 2), S2, S3, and the power input ends 1 and 2 of the laser ranging module W2 are connected through wires, respectively. The power output ends 3, 4 and 5, 6 of the power switch S1 are connected to the positive and negative and negative and positive power input ends of the electric push rod M1 through wires, the power output end of the power switch S2 and the negative power output end 4 of the power module W1 are connected to the two ends of the power input of the solenoid valve DC through wires, respectively. The power switch S The power output end of 3 and the negative power output end 4 pin of the power module W1 and the power input end of the detection lamp H, one end of the power input end resistor R1 of the detection circuit and the emitter of the transistor Q1, the positive power input end of the power input end relay K1 of the control circuit and the emitter of the transistor Q3 are respectively connected through wires; the collector and emitter of the phototransistor Q1 and the other end of the two-way signal input end resistor R1 and the other end of the resistor R2 of the detection circuit are respectively connected through wires, the collector of the signal output end transistor Q2 of the detection circuit and the base of the signal input end transistor Q3 of the control circuit are connected through wires, and the normally closed contact end of the power output end relay K1 of the control circuit and the emitter of the transistor Q3 and the two ends of the power input of the solenoid valve DC1 are respectively connected through wires.
[0019] Figure 1 , 2As shown, after the AC 220V power supply enters the power input terminal of the power module W1, the power output terminal of the power module W1 outputs a stable DC 12V power supply to enter the power switches S1, S2, S3 and the power input terminal of the laser ranging module W2. Before using the new type, the staff turns the handle of the power switch S1 to the left or right, and the 1, 2 feet and the 3, 4 feet or the 5, 6 feet of the power switch S1 are connected respectively, and then the positive and negative or negative positive power input terminals of the electric push rod M1 are powered. After the positive and negative power input terminals of the electric push rod M1 are powered, its push column pushes the photoelectric transistor Q1 to descend along the left outer end of the hopper, and subsequently, the liquid raw material entering the hopper is relatively small; after the negative and positive power input terminals of the electric push rod M1 are powered, its push column pulls the photoelectric transistor Q1 to rise along the left outer end of the hopper, and subsequently, the liquid raw material entering the hopper is relatively large. In actual situations, when the push column of the electric push rod M1 drives the photoelectric transistor Q1 to rise or fall in height, it will also drive the laser ranging module W2 to rise or fall in height. The more the laser ranging module W2 descends, the smaller the distance between it and the upper end of the workbench, and the voltage output from its 3rd pin to the voltmeter V is relatively small (the voltage number displayed on the voltmeter V is relatively small); the more the laser ranging module W2 rises, the larger the distance between it and the upper end of the workbench, and the voltage output from its 3rd pin to the voltmeter V is relatively large (the voltage number displayed on the voltmeter V is relatively large). Through the above, the staff can set the amount of liquid entering the hopper later by controlling the height of the photoelectric transistor driven by the electric push rod through the power switch, and the staff can intuitively understand the adjusted and set liquid height in the hopper by visually observing the voltage number displayed on the voltmeter V (the display interface is located outside the first opening at the front end of the electric control box, and the handles of the four power switches are respectively located outside the other four openings at the front end of the electric control box), which makes the application more convenient.
[0020] Figure 1 , 2As shown, after the staff sets the height of the phototransistor Q1, they turn on the power switch S3, so that the detection circuit, the control circuit, and the detection lamp H are powered on, and the 12V power supply enters the power input end of the solenoid valve DC1 through the power input end and the normally closed contact end of the relay K1. The valve core of the solenoid valve DC1 is powered on and opened, so that the liquid raw material of the previous process will enter the hopper 1. After the detection lamp H is powered on and illuminated, when the amount of liquid in the hopper 1 is insufficient, the light transmittance of the transparent hopper is relatively good, and the light is directly irradiated on the light receiving surface of the phototransistor Q1 through the material box body, and the internal resistance of the phototransistor Q1 becomes smaller. The phototransistor Q1 is turned on and the emitter outputs a high level, which enters the base of the transistor Q2 through the resistor R2 to reduce the voltage and limit the current. The transistor Q2 is turned on and the collector outputs a low level and enters the base of the transistor Q3. The transistor Q3 will not be turned on, and the relay K1 will not be powered on and pulled in. The solenoid valve DC1 continues to be powered on and the valve core opens, and the liquid of the previous process continues to enter the hopper 1. When the amount of liquid in hopper 1 is sufficient, the liquid in the hopper blocks the light entering the phototransistor Q1 (even if the liquid is translucent, it will cause light attenuation, so the light entering the light-receiving surface of the phototransistor Q1 is extremely weak). When extremely weak light (or the liquid is not translucent, no light is irradiated on the light-receiving surface of the phototransistor Q1) irradiates the light-receiving surface of the phototransistor Q1, the internal resistance of the phototransistor Q1 becomes larger, the collector of the phototransistor Q1 is cut off and no high level is output, and the collector of the transistor Q2 is cut off and no low level is output. Entering the base of transistor Q3, the base of transistor Q3 obtains appropriate forward bias through the resistor R3 to reduce the voltage and limit the current, and turns on its collector to output a low level and enter the negative power input terminal of relay K1. Relay K1 is energized to attract its control power input terminal and normally open contact terminal to close, and the control power input terminal and normally closed contact terminal are open. Then, the solenoid valve DC1 will lose power and the valve core will be closed, and the liquid in the previous process will no longer enter the hopper. At the same time, the buzzer B will be energized to emit a loud sound to remind the staff that the amount of liquid in the hopper is enough and the next step can be entered. Subsequently, the staff can turn off the power switch S3, the detection circuit and the control circuit will no longer work, and no liquid will enter the hopper. Then turn on the power switches S and S2, the solenoid valve DC at the lower end of the hopper will be energized to open the valve core, and the liquid pump M will be energized to work. The quantitative liquid in the hopper is pumped out by the liquid pump M and enters the next process. Finally, turn off the power switches S2 and S to complete a quantitative liquid inlet and outlet control of the hopper. Completely consistent with the above process, it can enter the next quantitative liquid inlet and outlet control.
[0021] Figure 1 , 2As shown, through the above, the staff of the new type can control the working mode of the electric push rod through the power switch, and the electric push rod drives the photoelectric transistor to be located at different heights on the side end of the hopper, thereby setting the amount of liquid entering the hopper, and the staff can understand the liquid amount data in the set hopper in real time through the laser ranging module; when the amount of liquid in the hopper is sufficient, the staff can be reminded in time, and the solenoid valve controlling the liquid inlet amount can be automatically closed, so that a certain amount of liquid raw materials can enter the next process, thereby bringing convenience to the staff and realizing precise liquid raw material input and output control. In the circuit, the transistors Q2 and Q3 are of model 9013; the relay K1 is of model DC12V; the power module W1 is a finished product of an AC 220V to DC 12V power module; the voltmeter V is a DC liquid crystal voltmeter with a range of 12V; the buzzer B is a finished product of an active continuous sound buzzer alarm of model MF12V; the solenoid valves DC and DC1 are normally closed valve core solenoid valves with a power of 2W; the liquid pump M has a power of 1.5KW; the electric push rod M1 is a finished product of a reciprocating electric telescopic rod with a power of 40W; the detection lamp H is an incandescent lamp with a power of 20W and a voltage of 12V; the laser ranging module W2 is a finished product of a laser ranging module of model GJD-01, which has two power input terminals and a signal output terminal. When the laser ranging module is working The closer the transmitter head of W2 is to the object, the smaller the voltage signal output by the signal output end, and vice versa; resistor R1 (the larger the resistance of resistor R1, the greater the light received by the light-receiving surface of phototransistor Q1, the phototransistor Q1 will be turned on, that is, when the light transmittance of the liquid is relatively good, the transistor Q2 will be turned on and the light threshold is set relatively large; the smaller the resistance of resistor R1, the smaller the light received by the light-receiving surface of phototransistor Q1, the phototransistor Q1 will be turned on, that is, when the light transmittance of the liquid is relatively poor, the transistor Q2 will be turned on and the light threshold is set relatively small), R2 and R3 resistance values are 100Ω, 4.7K, 100K respectively; the model of phototransistor Q1 is 3DU5C.
[0022] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the utility model.
[0023] In addition, it should be understood that although the present specification is described according to the implementation mode, the implementation mode does not only include an independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in the embodiments can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.
Claims
1. A new type of liquid loss-in-weight feeder, comprising a hopper, a solenoid valve, a liquid pump, a workbench, a detection lamp, and a one-way air valve, characterized in that: It also has an adjustment display mechanism, a detection circuit and a control circuit; the hopper and the liquid pump are respectively installed at both ends of the workbench, the lower end and the upper end of the hopper are respectively installed with a liquid outlet pipe and a liquid inlet pipe, there are at least two solenoid valves, the upper end of the liquid inlet pipe is connected to one end of the first solenoid valve, the other end of the first solenoid valve is connected to the liquid output pipe of the previous production process, the lower end of the liquid outlet pipe is connected to one end of the second solenoid valve, the other end of the second solenoid valve is connected to the liquid inlet pipe of the liquid pump, and the liquid outlet pipe of the liquid pump is connected to the liquid input pipe of the next production process; there are two openings on the upper side of the hopper, and the air inlet pipe of the one-way air valve and the detection lamp are respectively installed in the two openings; the There is a support frame outside the upper end of the hopper, and the adjustment and display mechanism includes an electric push rod, a photoelectric triode, a laser ranging module and a voltage display meter. The upper end of the electric push rod is installed on the side end of the support frame, and the lower end of the electric push rod is installed with a fixed seat. The photoelectric triode and the laser ranging module are installed on both sides of the lower end of the fixed seat; the voltage display meter, the detection circuit and the control circuit are installed in the inner end of the electric control box; the collector and emitter of the photoelectric triode are electrically connected to the two signal input ends of the detection circuit respectively, the signal output end of the detection circuit is electrically connected to the signal input end of the control circuit, and the power output end of the control circuit is electrically connected to the power input end of the first solenoid valve.
2. A novel liquid loss-in-weight feeder according to claim 1, characterized in that: The solenoid valve is a normally closed spool solenoid valve.
3. A novel liquid loss-in-weight feeder according to claim 1, characterized in that: The hopper is made of clear plastic.
4. A novel liquid loss-in-weight feeder according to claim 1, characterized in that: A sealing rubber pad is installed at the outer end of the photoelectric triode, a light receiving surface of the photoelectric triode is spaced apart from the outer end of the hopper, and a side end of the rubber pad is in sealing sliding contact with the outer end of the hopper.
5. A novel liquid loss-in-weight feeder according to claim 1, characterized in that: The power output terminal of the laser distance measuring module is electrically connected to the power input terminal of the voltage display meter, and the detection head of the laser distance measuring module is located at the bottom and is aligned with the workbench.
6. A novel liquid loss-in-weight feeder according to claim 1, characterized in that: The detection circuit comprises an electrically connected resistor and a transistor, one end of two resistors are connected, one end of the third resistor is connected to the transistor base, and the transistor collector is connected to the other end of the second resistor.
7. A novel liquid loss-in-weight feeder according to claim 1, characterized in that: The control circuit includes an electrically connected buzzer, a relay, and a transistor, wherein the transistor collector is connected to the negative power input terminal of the relay, the positive power input terminal of the relay is connected to the control power input terminal, the transistor emitter is connected to the negative power input terminal of the buzzer, and the normally open contact terminal of the relay is connected to the positive power input terminal of the buzzer.