A wall-mounted digital electromagnetic pump

Abstract

The utility model belongs to electromagnetic drive diaphragm metering pump technical field discloses a kind of wall-mounted digital electromagnetic pumps, including pump body shell, and pump body shell includes front shell, rear shell, and front shell and rear shell are fixed by buckle and screw and constitute airtight cavity, rear shell back integrated wall-mounted support;Electromagnetic drive mechanism, and electromagnetic drive mechanism includes first electromagnetic coil, diaphragm connecting rod positioning ring, spring, electromagnet hammer assembly and flexible diaphragm;Control module, and control module includes main control circuit board, and main control circuit board is fixedly installed in rear shell inner side, and second electromagnetic coil is connected on main control circuit board;Inlet and outlet module, and inlet and outlet module includes liquid inlet connector and liquid outlet connector, and built-in valve ball check structure.The utility model is driven LCD display screen by STM32 main control cooperation, can realize parameter visualization, compared with traditional mechanical knob adjusting mode, can significantly improve control precision, while supporting pulse / 4-20mA signal input can be seamlessly interfaced with PLC system.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetically driven diaphragm metering pump technology, and in particular to a wall-mounted digital electromagnetic pump. Background Technology

[0002] Wall-mounted digital electromagnetic pumps refer to pump devices that drive fluids (usually liquids) through electromagnetic force, employ digital control technology, and are designed to be suspended and installed on walls or equipment surfaces. Their core function is to achieve low-flow, high-precision liquid transfer or circulation control.

[0003] Traditional metering pumps generally have the following problems: 1) Outdated human-machine interaction: They use mechanical knobs to adjust a fixed frequency and have no digital display interface, so users cannot monitor key parameters such as flow rate and frequency in real time; 2) Limited installation method: It only supports horizontal placement, occupies a large space, and cannot adapt to vertical installation scenarios such as walls and cabinets; 3) Poor functional expandability: The control method is limited (only supports panel switch), lacks the ability to interact with automation systems (such as pulse / current control), and the corrosion resistance is limited by ordinary materials. Therefore, we propose a wall-mounted digital electromagnetic pump. Utility Model Content

[0004] In view of the problems of outdated human-machine interaction, limited installation methods and poor functional expandability of the existing pump body, this utility model is proposed.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A wall-mounted digital electromagnetic pump includes a pump body housing, the pump body housing including a front housing and a rear housing, the front housing and the rear housing being fixed together by buckles and screws to form a sealed cavity, and a wall-mounting bracket integrated on the back of the rear housing. An electromagnetic drive mechanism, comprising a first electromagnetic coil, a diaphragm connecting rod positioning ring, a spring, an electromagnetic hammer assembly, and a flexible diaphragm. The control module includes a main control circuit board, which is fixedly installed inside the rear shell, and a second electromagnetic coil is connected to the main control circuit board. The inlet / outlet module includes an inlet connector and an outlet connector, and has a built-in ball-type check valve structure.

[0006] As a technical solution of the wall-mounted digital electromagnetic pump described in this utility model, the snap-fit ​​structure between the front shell and the rear shell is distributed at the four corners, and the middle part is reinforced and locked by the screw.

[0007] As a technical solution for the wall-mounted digital electromagnetic pump described in this utility model, the wall-mounted bracket is provided with a guide rail slot and mounting holes, and supports vertical installation on the wall / cabinet.

[0008] As a technical solution of the wall-mounted digital electromagnetic pump described in this utility model, the flexible diaphragm is made of EPDM and PTFE composite material, and the flow-through components are made of PVDF and PTFE dual material structure.

[0009] As a technical solution for the wall-mounted digital electromagnetic pump described in this utility model, the control module uses an STM32 main control chip to drive an LCD display screen to display flow rate and frequency parameters in real time, and supports pulse signal / 4-20mA current signal input control.

[0010] As a technical solution for the wall-mounted digital electromagnetic pump described in this utility model, the control module integrates a liquid level switch interface to realize liquid level closed-loop control and automatic start / stop functions.

[0011] As a technical solution of the wall-mounted digital electromagnetic pump described in this utility model, the inlet connector and the outlet connector adopt a standard external thread structure and are adapted to quick-release fluid connectors.

[0012] As a technical solution for the wall-mounted digital electromagnetic pump described in this utility model, the main control circuit board and the second electromagnetic coil are connected by a high-temperature ribbon cable, and the ribbon cable path avoids the liquid flow channel area.

[0013] Compared with the prior art, the present invention has at least the following beneficial effects: 1. This utility model, through the cooperation of STM32 main control and LCD display, can realize parameter visualization. Compared with the traditional mechanical knob adjustment method, it can significantly improve control accuracy. At the same time, it supports pulse / 4-20mA signal input and can be seamlessly connected with PLC system.

[0014] 2. This utility model adopts the cooperation of the guide rail slot and the mounting hole of the wall-mounted bracket to support vertical installation and save installation space, and can adapt to the mounting substrate of different thicknesses to expand the application boundaries of chemical, laboratory and other scenarios.

[0015] 3. This utility model, by adopting the design of EPDM and PTFE composite membrane, can extend the service life of key components. Combined with the flow structure of PVDF and PTFE materials, it can expand the range of highly corrosive media to most commonly used industrial chemicals. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is a schematic diagram of the exploded structure of the driving end of this utility model.

[0017] Figure 2 This is a schematic diagram of the hydraulic end explosion structure of this utility model.

[0018] Explanation of reference numerals in the attached figures: In the diagram: 101, front shell; 102, rear shell; 103, wall mount bracket; 1031, guide rail slot; 1032, mounting hole; 2, screw; 301, first electromagnetic coil; 302, diaphragm connecting rod positioning ring; 303, spring; 304, electromagnetic hammer assembly; 305, flexible diaphragm; 401, main control circuit board; 402, second electromagnetic coil; 5, liquid inlet connector; 6, liquid outlet connector. Detailed Implementation

[0019] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0020] Reference Figure 1 and Figure 2 A wall-mounted digital electromagnetic pump is provided. The wall-mounted digital electromagnetic pump includes a pump body shell, which includes a front shell 101 and a rear shell 102. The front shell 101 and the rear shell 102 are fixed together by a buckle and a screw 2 to form a sealed cavity. A wall-mounted bracket 103 is integrated on the back of the rear shell 102. The electromagnetic drive mechanism includes a first electromagnetic coil 301, a diaphragm connecting rod positioning ring 302, a spring 303, an electromagnetic hammer assembly 304, and a flexible diaphragm 305. The first electromagnetic coil 301 and the electromagnetic hammer assembly 304 are coaxially mounted, and the diaphragm connecting rod positioning ring 302 constrains the stroke of the spring 303 (±2mm). The control module includes a main control circuit board 401, which is fixedly installed inside the rear shell 102, and a second electromagnetic coil 402 is connected to the main control circuit board 401. The inlet and outlet module includes an inlet connector 5 and an outlet connector 6, and has a built-in ball valve check structure with a built-in φ3mm ceramic ball. In application, the snap-fit ​​and screw structure of the double shell (front shell 101, rear shell 102) can improve sealing and shock resistance. Compared with the traditional horizontal placement structure, it can save the installation space of the wall bracket 103. At the same time, combined with the dual electromagnetic coil (first electromagnetic coil 301, second electromagnetic coil 402) design, the electromagnetic drive and control are separated, improving the response accuracy.

[0021] Reference Figure 1 The snap-fit ​​structures of the front shell 101 and the rear shell 102 are distributed at the four corners, and the middle is reinforced by screws 2. In application, the composite locking structure of the four corner snap-fits and the middle screws 2 enhances the shell's ability to withstand pressure, which is higher than the industry standard of 0.8MPa for traditional structures.

[0022] Reference Figure 1 The wall mount bracket 103 is provided with a guide rail slot 1031 and a mounting hole 1032, and supports vertical installation on the wall / cabinet. In application, the guide rail slot 1031 supports ±15° angle adjustment, and the mounting hole 1032 is compatible with M4 / M6 screws and can adapt to different thicknesses (10-50mm) of mounting substrates.

[0023] Reference Figure 2 The flexible diaphragm 305 is made of EPDM (ethylene propylene diene monomer) and PTFE (polytetrafluoroethylene) composite material, and the flow-through components are made of PVDF (polyvinylidene fluoride) and PTFE dual material structure. The edges of the flexible diaphragm 305 are pressed into the sealing groove of the shell, and the EPDM and PTFE composite layer faces the flow channel side. In application, the EPDM and PTFE composite material extends the temperature resistance range of the flexible diaphragm 305 to -40℃ to 120℃. At the same time, the flow-through structure of PVDF and PTFE material can improve the acid and alkali resistance to pH 1-14.

[0024] Reference Figure 1 The control module uses an STM32 main control chip to drive an LCD display screen, which displays flow rate and frequency parameters in real time. It also supports pulse signal / 4-20mA current signal input control. The LCD screen displays real-time flow rate (accuracy 0.1mL / min) and frequency (adjustable 200-2000Hz). In application, the STM32 main control chip drives the LCD display screen to achieve accurate (0.1mL / min) flow rate resolution, supports 200-2000Hz frequency adjustment, and has a signal response delay of <50ms.

[0025] Reference Figure 1The control module integrates a liquid level switch interface to realize closed-loop control of liquid level and automatic start-stop function. The liquid level switch interface is connected to a float sensor. In application, the liquid level switch interface achieves a liquid level control accuracy of ±2mm and the automatic start-stop function can reduce energy consumption.

[0026] Reference Figure 2 The inlet connector 5 and outlet connector 6 adopt a standard external thread structure, which is compatible with quick-release fluid connectors. The inlet connector 5 and outlet connector 6 adopt G1 / 4" external thread. After pressing and locking the quick-release connector, rotate 90° to complete the installation. In application, the G1 / 4" standard external thread is compatible with most (90%) industrial quick-release connectors, which can significantly shorten the installation time.

[0027] Reference Figure 1 and Figure 2 The main control circuit board 401 and the second electromagnetic coil 402 are connected by a high-temperature ribbon cable, and the ribbon cable path avoids the liquid flow channel area. The STM32 chip drives the second electromagnetic coil 402 through the high-temperature ribbon cable. The ribbon cable is U-shaped around the edge of the cavity to avoid the flow channel. In application, the high-temperature resistant (150℃) ribbon cable combined with the U-shaped winding path design can reduce the circuit failure rate.

[0028] The working principle of this utility model is as follows: Installation: Align the wall-mounted bracket 103 with the hole in the wall and fix it with expansion screws. Then push the pump body into the wall-mounted bracket 103 along the guide rail slot 1031 and lock it to prevent dislodgement. Finally, connect the inlet connector 5 and the outlet connector 6 to the pipeline through the quick-release connector (note the direction of the arrow). Power-on debugging and operation monitoring: First, connect the 24VDC power supply, connect the sensor to the liquid level switch interface, and set the parameters through the button: Flow mode: Directly input the target value (e.g., 10.0mL / min). Signal mode: Select pulse (0-5kHz) or 4-20mA input; After the LCD screen displays "READY", start the system and then run the following monitoring modes: Automatic mode: The pump automatically starts when the liquid level is lower than the set value and stops when the liquid level reaches the set value (accuracy ±2mm); Manual mode: The frequency can be adjusted in real time using the ▲ / ▼ keys (1Hz increments). Fault alarm: The screen displays codes such as E01 (stalled rotor) and E02 (overload) and the machine stops; Maintenance: Clean and remove the inlet connector 5 and outlet connector 6 monthly, rinse the valve ball with pH 5-9 cleaning agent, and replace the flexible diaphragm 305 every six months. The flexible diaphragm 305 can be removed by rotating the diaphragm connecting rod positioning ring 302 counterclockwise with a special tool.

[0029] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A wall-mounted digital electromagnetic pump, characterized in that: include: The pump body housing includes a front shell (101) and a rear shell (102). The front shell (101) and the rear shell (102) are fixed together by buckles and screws (2) to form a sealed cavity. The back of the rear shell (102) is integrated with a wall-mounted bracket (103). An electromagnetic drive mechanism, comprising a first electromagnetic coil (301), a diaphragm connecting rod positioning ring (302), a spring (303), an electromagnetic hammer assembly (304), and a flexible diaphragm (305). The control module includes a main control circuit board (401), which is fixedly installed inside the rear shell (102), and a second electromagnetic coil (402) is connected to the main control circuit board (401). The inlet and outlet module includes an inlet connector (5) and an outlet connector (6), and has a built-in ball-type check valve structure.

2. The wall-mounted digital electromagnetic pump according to claim 1, characterized in that: The snap-fit ​​structures of the front shell (101) and the rear shell (102) are distributed at the four corners, and are reinforced and locked in the middle by the screw (2).

3. The wall-mounted digital electromagnetic pump according to claim 1, characterized in that: The wall-mounted bracket (103) is provided with a guide rail slot (1031) and a mounting hole (1032), and supports vertical installation on the wall / cabinet.

4. The wall-mounted digital electromagnetic pump according to claim 1, characterized in that: The flexible diaphragm (305) is made of EPDM and PTFE composite material, and the flow-through components are made of PVDF and PTFE dual material structure.

5. The wall-mounted digital electromagnetic pump according to claim 1, characterized in that: The control module uses an STM32 main control chip to drive an LCD display screen, which displays flow rate and frequency parameters in real time, and supports pulse signal / 4-20mA current signal input control.

6. The wall-mounted digital electromagnetic pump according to claim 1, characterized in that: The control module integrates a liquid level switch interface to realize closed-loop control of liquid level and automatic start / stop functions.

7. The wall-mounted digital electromagnetic pump according to claim 1, characterized in that: The inlet connector (5) and the outlet connector (6) adopt a standard external thread structure and are compatible with quick-release fluid connectors.

8. The wall-mounted digital electromagnetic pump according to any one of claims 1-7, characterized in that: The main control circuit board (401) and the second electromagnetic coil (402) are connected by a high-temperature ribbon cable, and the ribbon cable path avoids the liquid flow channel area.

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