Flow control instrument

Abstract

The utility model relates to the field of control instruments, in particular to a flow control instrument which comprises a front box body and a rear box body, the front box body and the rear box body are oppositely arranged, the end face, away from the front box body, of the rear box body is closed, a mounting plate is arranged in the front box body, and a mounting cover is arranged on the end face, away from the rear box body, of the front box body. A first mounting square hole and a plurality of first mounting round holes are formed in the surface of the mounting cover plate, a display screen is arranged in the first mounting square hole, function keys are arranged in the first mounting round holes, a PLC processor is arranged on the mounting plate, the PLC processor is electrically connected with the display screen and the function keys, and the PLC processor is electrically connected with the display screen and the function keys. And the PLC processor can be electrically connected with an external sensor wiring, so that the effect of quickly and accurately controlling the fuel flow is achieved.

Description

Technical Field

[0001] This application relates to the field of control instruments, and in particular to a flow controller. Background Technology

[0002] Currently, in the process of refueling a car, in order to accurately control the volume of fuel during a single refueling, ensure that the error of a single refueling meets legal standards to maintain fair transactions, and at the same time control the flow rate and pressure of fuel to reduce the possibility of accidents such as fuel leakage and fire, a flow controller is used to control the flow rate of fuel.

[0003] Existing flow controllers include turbine mechanical sensors and mechanical ball valves. Turbine mechanical sensors can drive turbine blades to rotate as fuel flows through them. The blade speed is proportional to the flow rate. The speed is converted into linear displacement (such as pointer rotation) through a mechanical gear set, directly displaying the instantaneous flow rate or cumulative flow rate. The mechanical ball valve can manually open or close the fuel flow passage according to the cumulative flow rate, thereby controlling the fuel flow rate.

[0004] The existing technical solutions mentioned above have the following drawbacks: the turbine mechanical sensor is greatly affected by fuel viscosity and impurities, and the manual control of the fuel flow channel leads to a large error in fuel volume during refueling. Utility Model Content

[0005] This application provides a flow controller for quick and accurate control of fuel flow.

[0006] The above-mentioned technical objective of this application is achieved through the following technical solution:

[0007] A flow controller includes a front housing and a rear housing, the front housing and the rear housing being disposed opposite to each other. The end face of the rear housing facing away from the front housing is closed. A mounting plate is disposed inside the front housing, and a mounting cover is disposed on the end face of the front housing facing away from the rear housing. The mounting cover has a first mounting square hole and a plurality of first mounting round holes. A display screen is disposed in the first mounting square hole, and function buttons are disposed in the first mounting round holes. A PLC processor is disposed on the mounting plate. The PLC processor is electrically connected to the display screen and the function buttons, and the PLC processor can also be electrically connected to external sensors.

[0008] By adopting the above technical solution, a complete hardware architecture can be formed by setting up a front housing, a rear housing, a mounting plate, a mounting cover, a display screen, function buttons, and a PLC processor. The front and rear housings form the equipment shell, the mounting plate fixes the core components such as the PLC processor, the display screen and function buttons on the mounting cover realize human-machine interaction, and the PLC processor integrates external sensor data and internal control logic through electrical connection, thereby realizing automated and precise control of fuel flow, meeting the functional requirements of parameter setting, status display, and fault handling, and constructing a closed-loop control system of "input-processing-output".

[0009] Optionally, the end face connecting the front box and the rear box is provided with a positioning element, and the end face connecting the rear box and the front box is provided with a positioning groove adapted to the positioning element, and the positioning element can be inserted into the positioning groove.

[0010] By adopting the above technical solution and setting positioning parts and positioning grooves, the fitting and plugging of positioning parts and positioning grooves can provide precise guidance for the connection between the front and rear housings, ensuring that the two are quickly aligned during assembly, reducing installation errors, improving the stability and sealing of the housing connection, and avoiding damage to internal components or infiltration of external dust and liquids due to positional misalignment.

[0011] Optionally, the bottom of the positioning groove is provided with a sealing element adapted to the positioning groove, and the sealing element is made of rubber.

[0012] By adopting the above technical solution and setting a sealing element, when the positioning element is inserted into the positioning groove, the elastic deformation of the rubber can fill the gap to form a sealing structure, effectively preventing external moisture, dust and other impurities from entering the cabinet, protecting the precision components such as PLC processor and sensor wiring from corrosion, and improving the durability and reliability of the equipment in complex environments.

[0013] Optionally, a second mounting hole is provided on the end face of the rear housing, and a heat dissipation plate is provided on the second mounting hole on the end face of the rear housing to close the second mounting hole. The heat dissipation plate has a plurality of heat dissipation holes that connect the two surfaces of the heat dissipation plate.

[0014] By adopting the above technical solution and setting up a heat sink, the heat generated by components such as the PLC processor during operation can be quickly dissipated through the heat dissipation holes, reducing the internal temperature of the enclosure, avoiding performance degradation or failure of electronic components due to high temperature, ensuring long-term stable operation of the control module, and maintaining the accuracy of flow control unaffected by temperature fluctuations.

[0015] Optionally, a second mounting square hole is provided at a distance between the rear housing end face and the second mounting round hole, and a power interface is provided at the second mounting square hole inside the rear housing, the power interface being electrically connected to the PLC processor.

[0016] By adopting the above technical solution and setting a power interface, an external power input channel can be provided for the equipment, enabling components such as the PLC processor, display screen, and function buttons to obtain a stable power supply and support continuous operation of the equipment. The matching design of the power interface and the second mounting square hole realizes modular installation of the power connection, which facilitates later maintenance and replacement.

[0017] Optionally, a protective plate is provided at the second mounting square hole on the end face of the rear housing to close the second mounting square hole.

[0018] By adopting the above technical solution and setting up a protection board, the exposed power interface can be physically protected to prevent damage to the interface from external impacts, liquid splashes or dust accumulation, ensuring the safety and stability of the power connection and avoiding equipment downtime or control failure due to interface failure.

[0019] Optionally, L-shaped mounting brackets are provided on both sides of the rear box, with the short side of the inner corner of the mounting bracket fitting against the end face of the rear box and the long side of the inner corner of the mounting bracket spaced apart from the side wall of the rear box.

[0020] By adopting the above technical solution and setting up mounting components, the equipment can be easily installed on different locations such as walls and equipment brackets using fasteners such as bolts, adapting to various installation environments and improving the equipment's versatility and ease of installation.

[0021] Optionally, two second protrusions are provided at intervals on the opposite side walls of the front housing. The length direction of the second protrusion is perpendicular to the mounting cover surface, and the mounting plate is connected to the end face of the second protrusion by bolts.

[0022] By adopting the above technical solution, by setting a second protrusion and connecting the mounting plate to the second protrusion with bolts, a stable support structure can be provided for the mounting plate. The length direction of the second protrusion is perpendicular to the mounting cover, so that the mounting plate and the housing form a rigid connection, which enhances the vibration and impact resistance of the mounting plate, ensures that components such as PLC processors remain stable during equipment operation, and avoids poor contact or component damage caused by loose installation.

[0023] In summary, this application has the following technical effects:

[0024] 1. By setting up a front housing, rear housing, mounting plate, mounting cover, display screen, function buttons, and PLC processor, a complete hardware architecture can be formed. The front housing and rear housing form the equipment shell, the mounting plate fixes the core components such as the PLC processor, the display screen and function buttons on the mounting cover realize human-machine interaction, and the PLC processor integrates external sensor data and internal control logic through electrical connection, thereby realizing automated and precise control of fuel flow, meeting the functional requirements of parameter setting, status display, fault handling, etc., and building a closed-loop control system of "input-processing-output";

[0025] 2. By setting up positioning parts and positioning slots, the fitting and plugging of positioning parts and positioning slots can provide precise guidance for the connection between the front and rear housings, ensuring that the two are quickly aligned during assembly, reducing installation errors, improving the stability and sealing of the housing connection, and avoiding damage to internal components or the infiltration of external dust and liquids due to positional misalignment.

[0026] 3. By incorporating a sealing element, the elastic deformation of the rubber fills the gap when the positioning element is inserted into the positioning groove, forming a sealed structure that effectively prevents external moisture, dust, and other impurities from entering the housing. This protects precision components such as the PLC processor and sensor wiring from corrosion, enhancing the durability and reliability of the equipment in complex environments. Attached Figure Description

[0027] Figure 1 This is a structural diagram of the object of this application;

[0028] Figure 2 This is a structural diagram of this application after it has been opened;

[0029] Figure 3 This is a structural diagram from another angle after this application is opened.

[0030] Explanation of reference numerals in the attached drawings: 1. Mounting structure; 11. Front housing; 111. Mounting cover; 112. Second protrusion; 113. Positioning element; 114. First mounting square hole; 115. First mounting round hole; 12. Rear housing; 121. Connecting hole; 122. Positioning groove; 123. Second mounting square hole; 124. Second mounting round hole; 13. First protrusion; 14. Mounting plate; 15. Sealing element; 16. Heat sink; 161. Heat dissipation hole; 17. Wiring bolt; 18. Power interface; 181. Protection plate; 19. Mounting element; 2. Control components; 21. PLC processor; 22. Display screen; 23. Function keys; 231. Setting key; 232. Query key; 233. Confirm key; 234. Return key; 235. Select key. Detailed Implementation

[0031] The present application will be further described in detail below with reference to the accompanying drawings.

[0032] This application discloses a flow controller, referring to... Figure 1 The flow controller includes an installation structure 1 and a control component 2. The installation structure 1 protects the control component 2 and facilitates the installation of the flow controller. The control component 2 enables the flow controller to perform automatic quantitative refueling, pause or resume, and terminate operations. It displays quantitative, feeding, and flow parameters in real time, has fault detection and alarm functions, and can store the last 8 refueling records and support querying. It effectively solves problems such as cumbersome parameter settings, risk of refueling overflow, and delayed fault response, and meets the requirements of high-precision fluid control and data traceability.

[0033] Combination Figure 2 and Figure 3 The mounting structure 1 includes a front box 11 and a rear box 12. The front box 11 is a metal square tube, and the rear box 12 is a metal square tube with one end sealed. The front box 11 and the rear box 12 are arranged opposite to each other. The four outer side walls of the front box 11 are flush with the four outer side walls of the rear box 12. The opening of the rear box 12 faces the front box 11. The end of the front box 11 away from the rear box 12 is sealed by a mounting cover 111. The mounting cover 111 is a metal strip plate. The plate surface of the mounting cover 111 is fixed to the end face of the front box 11. The length direction of the mounting cover 111 is parallel to the length direction of the end face of the rear box 12.

[0034] Combination Figure 2 and Figure 3 A connecting hole 121 is provided at the edge of the end face of the rear box 12 away from the front box 11. The connecting hole 121 is a circular countersunk hole. The axis of the connecting hole 121 is perpendicular to the end face of the rear box 12. A circular blind hole is provided at the corresponding position on the end face of the front box 11. There are six connecting holes 121. The six connecting holes 121 are distributed in a rectangle on the end face of the rear box 12. Four of the connecting holes 121 are located at the four corners of the end face of the rear box 12, and the other two are located at the middle of the two sides of the length direction of the end face of the rear box 12. The front box 11 and the rear box 12 are connected by bolts inserted into the connecting holes 121 and threaded into the blind holes.

[0035] Combination Figure 2 and Figure 3 First protrusions 13 are machined at the connecting holes 121 on both sides of the end face of the rear housing 12 along its length and at corresponding positions on the inner wall of the front housing 11. The length direction of the first protrusions 13 is perpendicular to the end face of the rear housing 12, and the surface of the first protrusions 13 is arc-shaped. The first protrusions 13 can strengthen the strength of the front housing 11 and the rear housing 12. Second protrusions 112 are machined at intervals on both sides of the first protrusions 13 on the inner wall of the front housing 11. The length direction of the second protrusions 112 is parallel to the length direction of the first protrusions 13, and the end face of the second protrusions 112 near the rear housing 12 is located inside the front housing 11. The second protrusions 112 can strengthen the flow controller.

[0036] Combination Figure 2 and Figure 3 An installation plate 14 is provided inside the front housing 11. The installation plate 14 is a strip metal plate. The length direction of the installation plate 14 is parallel to the length direction of the installation cover 111. The surface of the installation plate 14 is parallel to the end face of the rear housing 12. The four corners of the surface of the installation plate 14 are connected to the end face of the second protrusion 112 near the rear housing 12 by bolts. The side wall of the installation plate 14 is machined to form a groove that matches the first protrusion 13.

[0037] Combination Figure 2 and Figure 3 A positioning element 113 is provided on the end face where the front housing 11 connects to the rear housing 12. The positioning element 113 is a rectangular frame made of strip plates joined end to end. The plate surface of the positioning element 113 is perpendicular to the end face of the front housing 11. The four corners of the positioning element 113 are chamfered and spaced apart from the blind holes. The mounting element 19 is bent at the position of the first protrusion 13. A positioning groove 122 is provided on the end face where the rear housing 12 connects to the front housing 11. The positioning groove 122 is adapted to the positioning element 113, and the positioning element 113 can be inserted into the positioning groove 122. A sealing element 15 is provided at the bottom of the positioning groove 122. The sealing element 15 is made of rubber and is adapted to the sealing groove. When the positioning element 113 is inserted into the sealing groove, the sealing element 15 can seal the positioning element 113 and the positioning groove 122.

[0038] Combination Figure 2 and Figure 3 The rear housing 12 has a second mounting hole 124 on its end face that connects the inside and outside of the rear housing 12. The rear housing 12 has a heat dissipation plate 16 that closes the second mounting hole 124 on its end face. The heat dissipation plate 16 is connected by bolts at the corners. The heat dissipation plate 16 has multiple heat dissipation holes 161 on its surface that connect the two surfaces of the heat dissipation plate 16. The multiple heat dissipation holes 161 are arranged in a circle. The heat dissipation holes 161 can reduce the possibility of excessive internal temperature when the controller is working and ensure the accuracy of the flow controller.

[0039] Combination Figure 2 and Figure 3 A second mounting square hole 123 is provided at a distance between the second mounting circular hole 124 and the end face of the rear housing 12. The second mounting square hole 123 connects the inside and outside of the rear housing 12. The second mounting square hole 123 and the second mounting circular hole 124 are located along the length of the end face of the rear housing 12. A power interface 18 is provided at the second mounting square hole 123 inside the rear housing 12. The power interface 18 is adapted to the second mounting square hole 123 and is inserted into the second mounting square hole 123. The power interface 18 is connected to the rear housing 12 by bolts. A protective plate 181 that seals the second mounting square hole 123 is bolted to the end face of the rear housing 12 away from the front housing 11 at the second mounting square hole 123.

[0040] Combination Figure 2 and Figure 3 A wiring bolt 17 is provided on the side of the second mounting square hole 123 on the end face of the rear housing 12, opposite to the second mounting round hole 124. The length direction of the wiring bolt 17 is perpendicular to the end face of the rear housing 12. The wiring bolt 17 is inserted into the rear housing 12. The head of the wiring bolt 17 is provided with a cylindrical section, which is away from the rear housing 12. A round hole is opened on the peripheral wall of the cylindrical section, which connects the peripheral wall of the cylindrical section and the end of the screw, thereby connecting the inside and outside of the rear housing 12. The wiring bolt 17 allows the wiring of various sensors to be passed into the flow controller to provide real-time data to the flow controller.

[0041] Combination Figure 2 and Figure 3 The rear housing 12 has an L-shaped mounting piece 19 on its end face. The short side of the inner corner of the mounting piece 19 fits against the end face of the rear housing 12, and the long side of the inner corner of the mounting piece 19 is spaced apart from the side wall of the rear housing 12. There are two mounting pieces 19, which are arranged opposite each other. The mounting pieces 19 are connected to the rear housing 12 by bolts. The mounting pieces 19 facilitate the installation of the flow controller to the designated position.

[0042] Combination Figure 2 and Figure 3 The control component 2 includes a PLC processor 21 mounted on the mounting plate 14, and a display screen 22 and function buttons 23 mounted on the mounting cover 111. The mounting cover 111 has a first mounting square hole 114 that connects the inside and outside on the panel facing away from the front housing 11. The length direction of the first mounting square hole 114 is parallel to the length direction of the mounting cover 111. The display screen 22 is located in the first mounting square hole 114 and is connected to the mounting cover 111 by bolts.

[0043] Combination Figure 2 and Figure 3 Four first mounting circular holes 115 are spaced apart along the length of the mounting cover 111 below the first mounting square hole 114. Four first mounting circular holes 115 are also spaced apart in a cross shape on the right side of the first mounting square hole 114. Function buttons 23 are located within the first mounting circular holes 115. From left to right, the four first mounting circular holes 115 below the first mounting square hole 114 contain a setting button 231, a query button 232, a confirmation button 233, and a return button 234. The four first mounting circular holes 115 on the right side of the first mounting square hole 114 contain selection buttons 235, which are directional selection keys for up, down, left, and right. Function buttons 23 are connected to the mounting cover 111 via nuts screwed onto the peripheral wall. Function buttons 23 are electrically connected to the PLC processor 21, the PLC processor 21 is electrically connected to the power interface 18, and the sensor wiring is electrically connected to the PLC processor 21.

[0044] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A flow controller, characterized in that: The device includes a front housing (11) and a rear housing (12), the front housing (11) and the rear housing (12) being arranged opposite to each other. The end face of the rear housing (12) facing away from the front housing (11) is closed. A mounting plate (14) is provided inside the front housing (11), and a mounting cover (111) is provided on the end face of the front housing (11) facing away from the rear housing (12). The mounting cover (111) has a first mounting square hole (114) and a plurality of first mounting round holes (115). A display screen (22) is provided in the first mounting square hole (114), and a function button (23) is provided in the first mounting round hole (115). A PLC processor (21) is provided on the mounting plate (14). The PLC processor (21) is electrically connected to the display screen (22) and the function button (23), and the PLC processor (21) can be electrically connected to an external sensor.

2. The flow controller according to claim 1, characterized in that: A positioning element (113) is provided on the end face where the front box (11) and the rear box (12) are connected. A positioning groove (122) adapted to the positioning element (113) is provided on the end face where the rear box (12) and the front box (11) are connected. The positioning element (113) can be inserted into the positioning groove (122).

3. A flow controller according to claim 2, characterized in that: The bottom of the positioning groove (122) is provided with a sealing element (15) that is adapted to the positioning groove (122), and the sealing element (15) is made of rubber.

4. A flow controller according to claim 1, characterized in that: The rear housing (12) has a second mounting hole (124) on its end face. The second mounting hole (124) on the end face of the rear housing (12) is provided with a heat dissipation plate (16) that closes the second mounting hole (124). The heat dissipation plate (16) has a plurality of heat dissipation holes (161) that connect the two surfaces of the heat dissipation plate (16).

5. A flow controller according to claim 4, characterized in that: The rear housing (12) has a second mounting square hole (123) spaced apart from the second mounting round hole (124). A power interface (18) is provided inside the rear housing (12) at the second mounting square hole (123), and the power interface (18) is electrically connected to the PLC processor (21).

6. A flow controller according to claim 5, characterized in that: A protective plate (181) is provided at the second mounting square hole (123) on the end face of the rear box (12) to close the second mounting square hole (123).

7. A flow controller according to claim 1, characterized in that: Both sides of the rear box (12) are provided with L-shaped mounting parts (19). The short side of the inner corner of the mounting part (19) is in contact with the end face of the rear box (12), and the long side of the inner corner of the mounting part (19) is spaced apart from the side wall of the rear box (12).

8. A flow controller according to claim 1, characterized in that: The front housing (11) has two second protrusions (112) spaced apart on opposite side walls. The length direction of the second protrusions (112) is perpendicular to the surface of the mounting cover (111). The mounting plate (14) is connected to the end face of the second protrusions (112) by bolts.

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