Hydraulic pump electric stroke regulator

Abstract

This utility model belongs to the field of hydraulic transmission and control technology, and discloses an electric stroke adjuster for a hydraulic pump. The adjuster body integrates a drive motor, a signal receiving module, a control module, and a transmission mechanism or adapter. The drive motor is connected to the transmission mechanism via a reduction gear. The output interface of the transmission mechanism is adapted to the stroke adjustment mechanism of a metering pump. The signal receiving module can receive externally input 4-20mA current signals and transmit them to the control module. The control module can control the start, stop, and direction of the drive motor according to the current signal. The adjuster body also has a manual handwheel, which is mechanically coupled to the transmission mechanism and supports manual and electric dual-mode adjustment. The transmission mechanism adopts a modular design. This utility model replaces traditional manual adjustment with electric signal drive, achieving high-precision, remote, and automated stroke control, significantly improving production efficiency and consistency, and is particularly suitable for complex or hazardous industrial scenarios.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic transmission and control technology, and in particular to an electric stroke adjuster for a hydraulic pump. Background Technology

[0002] Currently, most metering pump stroke adjustments are done manually on-site, which suffers from drawbacks such as poor adjustment accuracy, high labor intensity, inflexible adjustment, unsuitability for complex or hazardous environments, low work efficiency, inconsistency, and inability to achieve remote control. With the continuous improvement of electrification and automation in modern industry, the demand for electric stroke adjustment is becoming increasingly urgent. At present, most electric stroke adjusters used in China are imported, but imported products are less competitive in the market due to their high price, long delivery time, and numerous unstable factors during transportation. Therefore, we propose an electric stroke adjuster for hydraulic pumps. Utility Model Content

[0003] To address the technical problems raised in the background section, this utility model provides the following technical solution: An electric stroke regulator for a hydraulic pump includes a regulator body, which integrates a drive motor, a signal receiving module, a control module, and a transmission mechanism or adapter. The drive motor is connected to the transmission mechanism through a reduction gear. The output interface of the transmission mechanism is adapted to the stroke adjustment mechanism of the metering pump. The signal receiving module can receive externally input 4-20mA current signals and transmit them to the control module. The control module can control the start, stop and direction of the drive motor according to the current signal.

[0004] As a technical solution of the hydraulic pump electric stroke adjuster of this utility model, the adjuster body is also provided with a manual handwheel, which is mechanically coupled to the transmission mechanism and supports manual and electric dual-mode switching adjustment.

[0005] As a technical solution of the hydraulic pump electric stroke adjuster of this utility model, the transmission mechanism adopts a modular design and is compatible and replaceable with the adapter component, and is also compatible with the stroke adjustment mechanism of different models of metering pumps.

[0006] As a technical solution of the hydraulic pump electric stroke adjuster described in this utility model, the adapter component is a standardized interface, and the standardized interface specifications conform to the installation standards of mainstream metering pumps in China.

[0007] As a technical solution of the hydraulic pump electric stroke adjuster of this utility model, the signal receiving module is compatible with remote control commands and supports receiving adjustment signals through industrial bus or wireless communication.

[0008] As a technical solution of the hydraulic pump electric stroke adjuster of this utility model, the adjuster body adopts a size-optimized structure, and the overall volume is reduced to less than 70% of similar products, and the drive motor and the reduction device both adopt a compact integrated layout.

[0009] As a technical solution of the hydraulic pump electric stroke adjuster described in this utility model, the outer shell of the adjuster body is made of explosion-proof material and is suitable for flammable, high-temperature or highly corrosive industrial environments.

[0010] Compared with the prior art, the present invention has at least the following beneficial effects: 1. This utility model replaces traditional manual adjustment with electrical signal drive, realizing high-precision, remote and automated control of the stroke, significantly improving production efficiency and consistency, and is especially suitable for complex or dangerous industrial scenarios.

[0011] 2. This utility model, through modular design, localized standardized interfaces, and a compact structure, overcomes the bottlenecks of high prices and long delivery times of imported products while being compatible with mainstream equipment and reducing size and cost, thus boosting the market competitiveness of domestically produced electric regulators. Attached Figure Description

[0012] 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 overall three-dimensional structure of this utility model.

[0013] Figure 2 This is a front view schematic diagram of the present invention.

[0014] Figure 3 This is a side view of the present invention.

[0015] Figure 4 This is a bottom-view planar schematic diagram of the present invention.

[0016] Figure 5 This is a schematic diagram of the integrated structure of the regulator body of this utility model.

[0017] Explanation of reference numerals in the attached figures: In the diagram: 1. Regulator body; 101. Drive motor; 102. Signal receiving module; 103. Control module; 104. Transmission mechanism; 105. Standardized interface; 2. Manual handwheel. Detailed Implementation

[0018] 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.

[0019] Reference Figures 1-5 An electric stroke regulator for a hydraulic pump is provided. The electric stroke regulator for a hydraulic pump includes a regulator body 1, which integrates a drive motor 101, a signal receiving module 102, a control module 103 (including a signal processing chip), and a transmission mechanism 104 or a connecting component. The drive motor 101 is connected to the transmission mechanism 104 through a reduction gear (planetary gear reduction gear). The output interface of the transmission mechanism 104 is adapted to the stroke adjustment mechanism of the metering pump. The signal receiving module 102 can receive the externally input 4-20mA current signal and transmit it to the control module 103. The control module 103 presets a linear response algorithm to correspond the 4-20mA signal to the 0-100% stroke range and sets overload protection (automatic power cut-off when current > 22mA). The control module 103 can control the start, stop and direction of the drive motor 101 according to the current signal. In application, the automatic adjustment of the stroke is realized through the 4-20mA industrial standard signal, which solves the problems of poor accuracy and high labor intensity of manual adjustment and improves control consistency. At the same time, the drive motor 101, the control module 103 and the transmission mechanism 104 are highly integrated, simplifying the structure and improving reliability.

[0020] Reference Figure 1 , Figure 3 as well as Figure 4 The regulator body 1 is also equipped with a manual handwheel 2. The manual handwheel 2 is mechanically coupled to the transmission mechanism 104 and supports manual and electric dual-mode switching adjustment. The manual handwheel 2 is coupled to the transmission mechanism 104 through a clutch. In electric mode, the clutch is automatically disengaged. When switching to manual mode, the manual handwheel 2 needs to be pressed and the locking device rotated. In application, the manual handwheel 2 is mechanically coupled to the electric mode, which supports flexible operation in emergency manual intervention or power failure scenarios, and enhances the applicability of the equipment.

[0021] Reference Figures 1-5 The transmission mechanism 104 adopts a modular design and is compatible with and replaceable with the adapter. The transmission mechanism 104 is compatible with the adapter through a modular interface (such as a snap-fit ​​connection), which supports quick replacement. It is also compatible with the stroke adjustment mechanism of different models of metering pumps. In application, the interchangeable design of the transmission mechanism 104 and the adapter allows for compatibility with different models of metering pumps, reducing user replacement costs and improving product versatility.

[0022] Reference Figure 1 and Figure 5The adapter component is a standardized interface 105, and the specifications of the standardized interface 105 conform to the installation standards of mainstream metering pumps in China. The interface specifications are designed according to GB / T 28703-2012, and are compatible with the stroke adjustment shafts of mainstream domestic metering pumps (such as Ligo, Pasfield, etc.). It provides two standard sizes: Φ12mm and Φ16mm. In application, the standardized interface 105 conforms to the installation standards of mainstream metering pumps in China, solves the compatibility problem of imported products, and accelerates market promotion.

[0023] Reference Figure 5 The signal receiving module 102 is compatible with remote control commands and supports receiving adjustment signals via industrial bus or wireless communication. The signal receiving module 102 has a built-in HART protocol parsing chip, is compatible with 4-20mA analog signals and digital commands, and supports RS-485 / Modbus RTU industrial bus or Wi-Fi wireless communication. In applications, it supports industrial bus / wireless communication to meet the remote control needs of automated production lines or hazardous environments and improve the level of industrial intelligence.

[0024] Reference Figure 1 and Figure 5 The regulator body 1 adopts a size-optimized structure, reducing the overall volume to less than 70% of similar products. The drive motor 101 and the reduction gear both adopt a compact integrated layout. The drive motor 101 and the reduction gear adopt a coaxial design, and the overall size is controlled at 150×100×80mm (compared to approximately 200×150×120mm for similar products). In application, the volume is reduced to less than 70% of similar products, and the compact layout optimizes space occupation, making it more suitable for narrow or dense equipment installation scenarios.

[0025] Reference Figures 1-5 The housing of the regulator body 1 is made of explosion-proof material and is suitable for flammable, high-temperature or highly corrosive industrial environments. The housing has passed the EXd IIC T6 explosion-proof certification, and the internal circuit adopts potting process. In application, the explosion-proof housing design ensures safe operation in flammable, high-temperature and highly corrosive environments, filling the gap in the application of domestic equipment in special working conditions.

[0026] The working principle of this utility model is as follows: Installation and adaptation: Select the standardized interface 105 (such as Φ12mm / Φ16mm) according to the metering pump model, align the adapter with the pump body stroke adjustment shaft and lock it, and then fix the regulator body 1 on the mounting plane on the side of the pump body with bolts to ensure that the transmission mechanism 104 and the adapter are fully engaged. Parameter settings: First, connect the 4-20mA signal line. Use the buttons on the control module 103 to set the minimum stroke (0%) for 4mA and the maximum stroke (100%) for 20mA. If using remote control, set the device ID using the Modbus address code and test the stability of the bus / Wi-Fi communication. Operating mode switching: Electric mode: Keep the clutch in the disengaged state, and the system automatically adjusts the stroke according to the input signal; Manual mode: Press the manual handwheel 2 and rotate it clockwise to lock the clutch. Then, turn the manual handwheel 2 directly for fine-tuning (suitable for power outages or emergencies). Remote / Local Control: Local Control: Sends a 4-20mA signal to the regulator via PLC or DCS system to monitor stroke position feedback in real time; Remote commands: Send hexadecimal commands (such as "01 06 00 01 00 64" to set the stroke to 100%) via industrial bus, or control it using a wireless terminal APP.

[0027] 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. An electric stroke adjuster for a hydraulic pump, characterized in that: It includes a regulator body (1), which integrates a drive motor (101), a signal receiving module (102), a control module (103), and a transmission mechanism (104) or a connecting component; The drive motor (101) is connected to the transmission mechanism (104) through a reduction gear. The output interface of the transmission mechanism (104) is adapted to the stroke adjustment mechanism of the metering pump. The signal receiving module (102) can receive externally input 4-20mA current signals and transmit them to the control module (103). The control module (103) can control the start, stop and direction of the drive motor (101) according to the current signal.

2. The hydraulic pump electric stroke adjuster according to claim 1, characterized in that: The regulator body (1) is also provided with a manual handwheel (2), which is mechanically coupled to the transmission mechanism (104) and supports manual and electric dual-mode switching adjustment.

3. The hydraulic pump electric stroke adjuster according to claim 1, characterized in that: The transmission mechanism (104) adopts a modular design and is compatible with and replaceable with the adapter component, while also being compatible with the stroke adjustment mechanism of different models of metering pumps.

4. The hydraulic pump electric stroke adjuster according to claim 3, characterized in that: The adapter is a standardized interface (105), and the specifications of the standardized interface (105) conform to the installation standards of mainstream metering pumps in China.

5. The hydraulic pump electric stroke adjuster according to claim 1, characterized in that: The signal receiving module (102) is compatible with remote control commands and supports receiving adjustment signals via industrial bus or wireless communication.

6. The hydraulic pump electric stroke adjuster according to claim 1, characterized in that: The regulator body (1) adopts a size-optimized structure, reducing the overall volume to less than 70% of similar products, and the drive motor (101) and the reduction device both adopt a compact integrated layout.

7. The hydraulic pump electric stroke adjuster according to any one of claims 1-6, characterized in that: The outer shell of the regulator body (1) is made of explosion-proof material and is suitable for flammable, high-temperature or highly corrosive industrial environments.

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