Non-contact flow verification and backflow alarm device

Abstract

The utility model discloses a non-contact flow verification and backflow alarm device, and relates to the technical field of flow monitoring. The device comprises a bottom plate, the top face of the bottom plate is fixedly connected with a material storage barrel and a supporting frame, the surface of the supporting frame is provided with a material conveying assembly used for extracting materials in the material storage barrel, a three-way valve is arranged above the material conveying assembly, and the material conveying assembly is connected with the lower end of the three-way valve. A casting feeding assembly used for conveying materials to the casting position is arranged at the left end of the three-way valve. According to the utility model, the liquid material flow is accurately measured through the non-contact sensor, so that the accurate verification of the liquid material and the real-time monitoring of the liquid material flow in the production process are realized, in addition, the liquid material backflow caused by the problem of the reversing valve in the sand filling process can be judged, and further, the liquid material can be judged not to enter the sand mixer. And meanwhile, an alarm signal is generated so as to reduce the quality problem or economic loss caused by the lack of the liquid material in the sand mold.

Description

Technical Field

[0001] The utility model relates to the technical field of flow monitoring, in particular to a non-contact flow calibration and backflow alarm device. Background Art

[0002] A flow meter is an instrument or device used to measure the flow rate, volume or mass of a fluid. They are widely used in many industries, including chemical, petroleum, pharmaceutical, food and beverage, water treatment, etc. Flow meters can be used to monitor the flow of fluid in a pipe or channel and provide accurate flow rate, volume or mass information. In the resin sand molding process, contact sensors are often used to monitor the flow rate.

[0003] Since liquid materials are easy to adhere to sensitive components, the flow measurement of resin or curing agent will be inaccurate, which may cause the curing time and strength of sand molds to fail to meet technical requirements. In addition, in the foundry industry, it is easy for the liquid material reversing valve to fail to work during the molding process, resulting in the lack of resin or curing agent, which makes the sand mold unable to harden.

[0004] For this purpose, a non-contact flow rate calibration and backflow alarm device is proposed. Utility Model Content

[0005] The purpose of the utility model is to solve the problems mentioned in the above background technology and provide a non-contact flow rate verification and backflow alarm device.

[0006] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0007] A non-contact flow calibration and backflow alarm device comprises a base plate, the top surface of which is fixedly connected with a material storage barrel and a support frame, the surface of the support frame is provided with a material conveying assembly for extracting materials from the material storage barrel, a three-way valve is provided above the material conveying assembly, and the material conveying assembly is connected to the lower end of the three-way valve, a casting feeding assembly for conveying materials to a casting position is provided at the left end of the three-way valve, a backflow pipeline is provided at the right end of the three-way valve, a non-contact flow sensor is provided on the surface of the backflow pipeline, a positioning mechanism for limiting the non-contact flow sensor is also provided on the surface of the backflow pipeline, and an audible and visual alarm, a human-computer interaction display screen and a PLC controller are also fixedly installed on the surface of the support frame.

[0008] Furthermore, the material conveying assembly includes a liquid pump, and the liquid pump is fixedly installed on the top surface of the support frame, the feed end of the liquid pump is fixedly connected with a pumping pipe, and the pumping pipe is fixedly connected to the storage barrel, the discharge end of the liquid pump is fixedly connected with a first connecting pipe, and the first connecting pipe is fixedly connected to the lower end of the three-way valve, and a flow meter is provided in the middle section of the first connecting pipe.

[0009] Furthermore, the casting and feeding assembly includes a second connecting pipe, and the second connecting pipe is fixedly connected to the left end of the three-way valve, and a nozzle is provided at the end of the second connecting pipe.

[0010] Furthermore, the reflux pipeline includes a third connecting pipe, and the third connecting pipe is fixedly connected to the right end of the three-way valve, the end of the third connecting pipe is fixedly connected to a reflux barrel, and the reflux barrel is fixedly installed on the top surface of the bottom plate.

[0011] Furthermore, the positioning mechanism includes a docking assembly for connecting the third connecting pipe and a locking assembly for connecting the non-contact flow sensor, the docking assembly includes a front clamp block and a rear clamp block, and the rear clamp block and the front clamp block both fit the surface of the third connecting pipe, the surface of the front clamp block is threadedly connected with a fastening bolt, and the fastening bolt is threadedly connected to the rear clamp block.

[0012] Furthermore, the locking assembly includes a double-headed screw, and both ends of the double-headed screw are rotatably connected to the inner wall of the front block, the surface of the double-headed screw is threadedly connected to a slider, the inner wall of the front block is fixedly connected to a sliding column, and the surface of the sliding column is slidably connected to the slider, the front of the slider is fixedly connected to an insertion block, the back of the non-contact flow sensor is fixedly connected to a positioning bar, and the end of the insertion block is movably connected to the positioning bar, the top of the front block is rotatably connected to a worm, the top of the worm is fixedly connected to a knob, the middle part of the double-headed screw is fixedly sleeved with a worm wheel, and the worm wheel is meshing with the worm.

[0013] The beneficial effects of the utility model are as follows:

[0014] 1. Extract the material from the storage barrel through the material conveying component, open the lower and right ends of the three-way valve to allow the material to flow back to the return line. The non-contact flow sensor can detect the flow data in the return line without contacting the material. After running for three to five minutes, the flow data is automatically generated and compared with the set value through the PLC controller. If it is within the allowable error range, the calibration is qualified. If it is unqualified, the frequency of the material conveying component is continuously adjusted until the calibration is qualified. After passing, the material flow direction is controlled by the three-way valve, and the lower and left ends of the three-way valve are opened to allow the material to enter the casting feeding component. The material is conveyed through the casting feeding component and can be used When the material is used for resin sand molding, if the three-way valve is not reversed or fails during the molding process, material will enter the return pipe. At this time, the non-contact flow sensor will detect the material flow and immediately control the sound and light alarm to alarm, prompting the management personnel to pay attention. The utility model accurately measures the liquid flow rate through a non-contact sensor, thereby realizing accurate calibration of the liquid material and real-time monitoring of the liquid flow rate during the production process. In addition, it can determine the liquid reflux caused by the reversing valve problem during the sand filling process, and then it can be determined that the liquid has not entered the sand mixer, and at the same time generate an alarm signal to reduce quality problems or economic losses caused by the lack of liquid in the sand mold.

[0015] 2. When the non-contact flow sensor needs to be disassembled for inspection or replacement after long-term use, the positioning mechanism can be used to release the limit of the non-contact flow sensor, so that the non-contact flow sensor can be quickly disassembled, making the disassembly and replacement work more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 It is a partial structural schematic diagram of the utility model;

[0018] Figure 3 This is a front cross-sectional view of the positioning mechanism structure of the utility model;

[0019] Figure 4 This is a rear view of the structure of the non-contact flow sensor of the utility model;

[0020] Figure numerals: 1. bottom plate; 2. material storage barrel; 3. non-contact flow sensor; 4. support frame; 5. material conveying assembly; 501. liquid material pump; 502. extraction pipe; 503. first connecting pipe; 6. three-way valve; 7. casting feeding assembly; 701. second connecting pipe; 702. nozzle; 8. reflux pipeline; 801. third connecting pipe; 802. reflux barrel; 9. positioning mechanism; 901. front clamping block; 902. rear clamping block; 903. fastening bolt; 904. double-headed screw; 905. slider; 906. plug-in block; 907. sliding column; 908. positioning strip; 909. worm; 910. worm gear; 911. knob; 10. sound and light alarm; 11. human-computer interaction display screen; 12. PLC controller. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0024] The electrical components mentioned in this article are all connected to an external main controller and 220V mains electricity, and the main controller can be a conventional known device for controlling a computer or the like.

[0025] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] like Figures 1 to 4 As shown, the non-contact flow calibration and backflow alarm device includes a base plate 1, the top surface of the base plate 1 is fixedly connected with a storage barrel 2 and a support frame 4, the surface of the support frame 4 is provided with a material conveying component 5 for extracting the material inside the storage barrel 2, a three-way valve 6 is provided above the material conveying component 5, and the material conveying component 5 is connected to the lower end of the three-way valve 6, the left end of the three-way valve 6 is provided with a casting feeding component 7 for conveying material to the casting position, the right end of the three-way valve 6 is provided with a backflow pipeline 8, the surface of the backflow pipeline 8 is provided with a non-contact flow sensor 3, the surface of the backflow pipeline 8 is also provided with a positioning mechanism 9 for limiting the non-contact flow sensor 3, and the surface of the support frame 4 is also fixedly installed with an audible and visual alarm 10, a human-computer interaction display screen 11 and a PLC controller 12. More specifically, the material in the storage barrel 2 is extracted through the material conveying component 5, and the three-way valve 6 opens the lower end and the right end to allow the material to flow back into the return pipe 8. The non-contact flow sensor 3 can detect the flow data in the return pipe 8 without contacting the material. After running for three to five minutes, the flow data is automatically generated and compared with the set value through the PLC controller 12. If it is within the allowable error range, the calibration is qualified. If it is unqualified, the frequency of the material conveying component 5 is continuously adjusted until the calibration is qualified. After passing the calibration, the material flow direction is controlled by the three-way valve 6, and the lower end and the left end of the three-way valve 6 are opened, so that The material enters the casting and feeding assembly 7, and is transported by the casting and feeding assembly 7, so that the material can be used for resin sand molding. If the three-way valve 6 is not reversed or fails during the molding process, material will enter the return pipe 8. At this time, the non-contact flow sensor 3 will detect the flow of material and immediately control the sound and light alarm 10 to alarm, prompting the management personnel to pay attention. When the non-contact flow sensor 3 needs to be disassembled, repaired or replaced after long-term use, the positioning mechanism 9 can be used to release the limit of the non-contact flow sensor 3, so that the non-contact flow sensor 3 can be quickly disassembled.

[0027] The material conveying assembly 5 includes a liquid material pump 501, and the liquid material pump 501 is fixedly installed on the top surface of the support frame 4, the feed end of the liquid material pump 501 is fixedly connected with a pumping pipe 502, and the pumping pipe 502 is fixedly connected to the storage barrel 2, the discharge end of the liquid material pump 501 is fixedly connected with a first connecting pipe 503, and the first connecting pipe 503 is fixedly connected to the lower end of the three-way valve 6, and the middle section of the first connecting pipe 503 is provided with a flow meter, which is not shown in the figure. It should be noted that the suction force generated by the operation of the liquid material pump 501 causes the material inside the storage barrel 2 to be sucked into the pumping pipe 502, and is sent into the three-way valve 6 through the first connecting pipe 503, thereby realizing material supply, and the amount of outflowing material can be measured by the flow meter.

[0028] The casting feeding assembly 7 includes a second connecting pipe 701, and the second connecting pipe 701 is fixedly connected to the left end of the three-way valve 6, and a nozzle 702 is provided at the end of the second connecting pipe 701. More specifically, by opening the lower end and the left end of the three-way valve 6, the material enters the second connecting pipe 701 and is transported through the nozzle 702, so that the material can be delivered to the casting position.

[0029] The reflux pipeline 8 includes a third connecting pipe 801, and the third connecting pipe 801 is fixedly connected to the right end of the three-way valve 6, and the end of the third connecting pipe 801 is fixedly connected to a reflux barrel 802, and the reflux barrel 802 is fixedly installed on the top surface of the bottom plate 1. It should be noted that by opening the right end and the lower end of the three-way valve 6, the material can enter the third connecting pipe 801, and finally the reflux material is stored through the reflux barrel 802.

[0030] The positioning mechanism 9 includes a docking assembly for connecting the third connecting tube 801 and a locking assembly for connecting the non-contact flow sensor 3, the docking assembly includes a front clamping block 901 and a rear clamping block 902, and the rear clamping block 902 and the front clamping block 901 are both fitted to the surface of the third connecting tube 801, the surface of the front clamping block 901 is threadedly connected with a fastening bolt 903, and the fastening bolt 903 is threadedly connected to the rear clamping block 902. More specifically, by fitting the inner walls of the front clamping block 901 and the rear clamping block 902 to the surface of the third connecting tube 801, and then locking the front clamping block 901 and the rear clamping block 902 with the fastening bolt 903, the third connecting tube 801 can be connected, thereby ensuring the stable installation of the subsequent non-contact flow sensor 3.

[0031] The locking assembly includes a double-headed screw 904, and both ends of the double-headed screw 904 are rotatably connected to the inner wall of the front block 901, the surface of the double-headed screw 904 is threadedly connected to a slider 905, the inner wall of the front block 901 is fixedly connected to a slide column 907, and the surface of the slide column 907 is slidably connected to the slider 905, the front of the slider 905 is fixedly connected to an insert block 906, the back of the non-contact flow sensor 3 is fixedly connected to a positioning bar 908, and the end of the insert block 906 is movably connected to the positioning bar 908, the top of the front block 901 is rotatably connected to a worm 909, the top of the worm 909 is fixedly connected to a knob 911, the middle of the double-headed screw 904 is fixedly sleeved with a worm wheel 910, and the worm wheel 910 is meshed with the worm 909. It should be noted that by turning the knob 911, the worm 909 is driven to rotate, thereby driving the worm wheel 910 meshing with it to rotate, and the double-headed screw 904 can be controlled to rotate. Under the action of the thread, the slider 905 will be driven to slide along the surface of the slide column 907, and then the movement of the plug block 906 is controlled, so that the end of the plug block 906 is separated from the surface of the positioning strip 908, and the limit of the non-contact flow sensor 3 can be released, thereby facilitating the disassembly, maintenance or replacement of the non-contact flow sensor 3.

[0032] In summary: the material in the storage barrel 2 is extracted through the material conveying component 5, and the three-way valve 6 opens the lower end and the right end to allow the material to flow back to the reflux pipeline 8. The non-contact flow sensor 3 can detect the flow data in the reflux pipeline 8 without contacting the material. After running for three to five minutes, the flow data is automatically generated, and the set value is compared through the PLC controller 12. If it is within the allowable error range, the calibration is qualified. If it is unqualified, the frequency of the material conveying component 5 is continuously adjusted until the calibration is qualified. After passing the calibration, the material flow direction is controlled by the three-way valve 6, and the lower end and the left end of the three-way valve 6 are opened to allow the material to enter the casting and feeding component 7, and the material is conveyed through the casting and feeding component 7. The material can be used for resin sand molding. If the three-way valve 6 does not change direction or fails during the molding process, the material will enter the return line 8. At this time, the non-contact flow sensor 3 will detect the material flow and immediately control the sound and light alarm 10 to alarm, prompting the management personnel to pay attention. The utility model uses a non-contact sensor to accurately measure the liquid flow rate, thereby realizing accurate calibration of the liquid material and real-time monitoring of the liquid flow rate during the production process. In addition, it can judge the liquid reflux caused by the reversing valve problem during the sand filling process, and then it can be judged that the liquid material has not entered the sand mixer, and at the same time, an alarm signal is generated to reduce quality problems or economic losses caused by the lack of liquid in the sand mold. When the non-contact flow sensor needs to be disassembled for inspection or replacement after long-term use, the positioning mechanism can be used to release the limit of the non-contact flow sensor, so that the non-contact flow sensor can be quickly disassembled, making the disassembly and replacement work more convenient.

[0033] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. Non-contact flow calibration and backflow alarm device, characterized in that: The invention comprises a bottom plate (1), the top surface of which is fixedly connected to a material storage barrel (2) and a support frame (4), the surface of which is provided with a material conveying assembly (5) for extracting material from the material storage barrel (2), a three-way valve (6) being provided above the material conveying assembly (5), and the material conveying assembly (5) is connected to the lower end of the three-way valve (6), a casting feeding assembly (7) for conveying material to a casting position being provided at the left end of the three-way valve (6), a return line (8) being provided at the right end of the three-way valve (6), a non-contact flow sensor (3) being provided on the surface of the return line (8), and a positioning mechanism (9) for limiting the non-contact flow sensor (3) being also provided on the surface of the return line (8), and an audible and visual alarm (10), a human-machine interactive display screen (11) and a PLC controller (12) being also fixedly mounted on the surface of the support frame (4).

2. The non-contact flow rate calibration and backflow alarm device according to claim 1 is characterized in that: The material conveying assembly (5) comprises a liquid material pump (501), and the liquid material pump (501) is fixedly installed on the top surface of the support frame (4); the feed end of the liquid material pump (501) is fixedly connected to a pumping pipe (502), and the pumping pipe (502) is fixedly connected to the storage barrel (2); the discharge end of the liquid material pump (501) is fixedly connected to a first connecting pipe (503), and the first connecting pipe (503) is fixedly connected to the lower end of the three-way valve (6); and a flow meter is provided in the middle section of the first connecting pipe (503).

3. The non-contact flow rate calibration and backflow alarm device according to claim 1, characterized in that: The casting and feeding assembly (7) comprises a second connecting pipe (701), and the second connecting pipe (701) is fixedly connected to the left end of the three-way valve (6), and a nozzle (702) is provided at the end of the second connecting pipe (701).

4. The non-contact flow rate calibration and backflow alarm device according to claim 1, characterized in that: The reflux pipeline (8) comprises a third connecting pipe (801), and the third connecting pipe (801) is fixedly connected to the right end of the three-way valve (6), and the end of the third connecting pipe (801) is fixedly connected to a reflux barrel (802), and the reflux barrel (802) is fixedly installed on the top surface of the bottom plate (1).

5. The non-contact flow rate calibration and backflow alarm device according to claim 4, characterized in that: The positioning mechanism (9) comprises a docking assembly for connecting the third connecting tube (801) and a locking assembly for connecting the non-contact flow sensor (3); the docking assembly comprises a front clamping block (901) and a rear clamping block (902); the rear clamping block (902) and the front clamping block (901) both fit the surface of the third connecting tube (801); a fastening bolt (903) is threadedly connected to the surface of the front clamping block (901); and the fastening bolt (903) is threadedly connected to the rear clamping block (902).

6. The non-contact flow rate calibration and backflow alarm device according to claim 5, characterized in that: The locking assembly comprises a double-headed screw (904), and both ends of the double-headed screw (904) are rotatably connected to the inner wall of the front clamping block (901), the surface of the double-headed screw (904) is threadedly connected to a slider (905), the inner wall of the front clamping block (901) is fixedly connected to a slide column (907), and the surface of the slide column (907) is slidably connected to the slider (905), and the front surface of the slider (905) is fixedly connected to an insert block (906). The back of the non-contact flow sensor (3) is fixedly connected to a positioning bar (908), and the end of the plug block (906) is movably plugged into the positioning bar (908); the top of the front clamping block (901) is rotatably connected to a worm (909), the top of the worm (909) is fixedly connected to a knob (911), and the middle of the double-headed screw (904) is fixedly sleeved with a worm wheel (910), and the worm wheel (910) is meshed with the worm (909).

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