High-precision flow metering type metering pump

Abstract

The invention discloses a high-precision flow metering type metering pump which comprises a metering pump shell, a one-way valve, a brushless motor transmission mechanism, a control panel, a display screen and a pressure sensor, the metering pump shell comprises a base, an outer shell and a shell cover, the outer shell is installed on the base, the shell cover is used for covering the outer shell to form a cavity of a hollow structure, and the brushless motor transmission mechanism is installed on the shell cover. The pump head is arranged on one side, perpendicular to the shell cover and the base, of the outer shell, the outlet end of the pump head, the one-way valve and the brushless motor transmission mechanism are arranged in the cavity, the control panel is installed on the inner wall of the outer shell, the display screen is arranged on the shell cover, and the pressure sensor is arranged at the outlet end of the pump head. And the one-way valve is arranged at a connecting channel of the pump head and the brushless motor transmission mechanism. The device is simple in mechanical structure and stable in operation, has the capacity of a metering pump and the high-precision metering capacity of a meter, can be used as a pump and a flow meter, saves the cost, and really achieves metering and adding integrated equipment.

Description

Technical Field

[0001] The invention relates to the technical field of metering pumps, and more specifically to a high-precision flow metering pump. Background Art

[0002] At present, most of the metering pump products in China are manufactured by traditional technology. At the same time, during production, most metering pump products consider the cost and product effect. There are not too many restrictions on the process accuracy and other issues of metering pumps. Therefore, metering pumps such as metering pumps cannot realize the function of "metering". For metering, flow meters are used, and flow meters have a long history of development. They can be seen everywhere in production and life. They can be said to be more traditional metering instruments. There are also many instrument manufacturers at home and abroad that can produce high-precision flow meter equipment, which has a relatively stable metering function. Therefore, when using it, if we need to have high-precision metering capabilities and pump functions at the same time, we need to use multiple instruments together, which greatly increases the cost of use. Therefore, based on the functional characteristics of the two, our company has focused on the research of experimental flow calculation and control on metering pumps in recent years. After a large amount of data verification, there is a certain relationship between the combination of the two, and finally realize the research and development and production of high-precision metering flow metering pumps. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a precision metering flow metering pump. The present invention has a simple mechanical structure, stable operation, and has the ability of a metering pump and the high-precision metering ability of a specific meter. It can be used as a pump as well as a flow meter to save costs and truly achieve integrated metering and dosing equipment.

[0004] The objective of the present invention is achieved through the following technical solutions: a high-precision metering flow metering pump, comprising a metering pump housing, a one-way valve, a brushless motor transmission mechanism, a control panel, a display screen and a pressure sensor, the metering pump housing comprising a base, an outer shell and a shell cover, the outer shell is mounted on the base, the shell cover is used to cover the outer shell to form a cavity with a hollow structure, a pump head is provided on one side of the outer shell perpendicular to the shell cover and the base, the outlet end of the pump head is provided, the one-way valve and the brushless motor transmission mechanism are arranged inside the cavity, the control panel is mounted on the inner wall of the outer shell, the display screen is arranged on the shell cover, the pressure sensor is arranged at the outlet end of the pump head, the one-way valve is arranged at the connecting channel between the pump head and the brushless motor transmission mechanism, the brushless motor mechanism comprises a brushless motor, a transmission box and a cylinder body, the cylinder body is connected to the one-way valve, the transmission box is driven to move by the brushless motor, the diaphragm is squeezed by mechanical reciprocating motion and combined with the one-way valve, thereby generating working flow and pressure.

[0005] In one preferred embodiment, the base is provided with a through hole for installation.

[0006] Control system for high-precision flow metering pumps.

[0007] Metering pump, used to transport fluid materials and control the flow rate of output fluid materials through the rotation speed;

[0008] The pressure sensor is used to collect the working pressure change value of the pump at all times. It adopts the closed-loop negative feedback control principle. The changes in working pressure will be collected in real time to obtain more accurate data;

[0009] The control panel is used to receive the collected flow signals in real time, filter the flow signals, perform differential processing through a dedicated program to form differential flow, and then superimpose time parameters to obtain accurate flow values, and provide multi-interface control modes, multi-data display and storage;

[0010] Display screen, used to input instructions and display the current working status of the metering pump.

[0011] The beneficial effects of the present invention are as follows: the present invention has a simple mechanical structure, stable operation, a service life of up to 20,000 hours, can adapt to a variety of working pressure environments, a maximum working pressure of 1.6Mpa, and has multi-interface control modes (remote start and stop, analog access, 485 / TCP communication, etc.), multi-data display and storage (operating time, real-time pressure, instantaneous flow, cumulative flow, time period flow), as well as timed addition, quantitative addition, segmented addition, one-button quick discharge, diaphragm self-test, parameter setting and other functions, to achieve customized services and solve substantial problems for customers; it can be used as a pump as well as a flow meter to save costs, and truly achieve integrated metering and addition equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0014] Figure 2 It is an exploded schematic diagram of the overall structure of the present invention;

[0015] In the figure, 1-metering pump housing, 11-base, 12-outer housing, 13-shell cover, 14-cavity, 2-brushless motor transmission mechanism, 3-control board, 4-display screen, 5-pump head. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0017] 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 invention claimed for protection, 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.

[0018] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0019] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive 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 direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0020] The terms “first”, “second”, “third”, etc. are only used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0021] The terms "parallel", "vertical", etc. do not mean that the components must be absolutely parallel or vertical, but can be slightly tilted. For example, "parallel" only means that its direction is more parallel than "vertical", and does not mean that the structure must be completely parallel, but can be slightly tilted.

[0022] The terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal, vertical or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0023] In addition, the terms "roughly" and "basically" are intended to explain that the relevant content does not require absolute accuracy, but can have certain deviations. For example, "roughly equal to" does not only mean absolute parallelism. Since it is difficult to achieve absolute "equality" in actual production and operation, there are generally certain deviations. Therefore, in addition to absolute equality, "roughly equal to" also includes the above-mentioned situation with certain deviations. Taking this as an example, in other cases, unless otherwise specified, the terms "roughly" and "basically" have similar meanings to the above.

[0024] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] See also Figure 1 and 2 The present invention provides a technical solution: a high-precision metering flow metering pump, comprising a metering pump housing 1, a one-way valve, a brushless motor transmission mechanism 2, a control panel 3, a display screen 4 and a pressure sensor, wherein the metering pump housing 1 comprises a base 11, an outer shell 12 and a shell cover 13, wherein the outer shell 12 is mounted on the base 11, and the shell cover 13 is used to cover the outer shell 12 to form a cavity 14 with a hollow structure, and a pump head 5 is provided on one side of the outer shell 12 which is perpendicular to the shell cover 13 and the base 11, and the outlet end of the pump head 5 is provided with the The one-way valve and the brushless motor transmission mechanism 2 are arranged inside the cavity 14, the control board 3 is installed on the inner wall of the outer shell 12, the display screen 4 is arranged on the shell cover 13, the pressure sensor is arranged at the outlet end of the pump head 5, and the one-way valve is arranged at the connecting channel between the pump head 5 and the brushless motor transmission mechanism 2. The brushless motor mechanism includes a brushless motor, a transmission box and a cylinder body, and the cylinder body is connected to the one-way valve. The transmission box is driven to move by the brushless motor, and the diaphragm is squeezed by mechanical reciprocating motion combined with the action of the one-way valve, thereby generating working flow and pressure. The present invention has a simple mechanical structure, stable operation, a service life of up to 20,000 hours, can adapt to a variety of working pressure environments, and has a maximum working pressure of 1.6Mpa. It has multi-interface control modes (remote start and stop, analog access, 485 / TCP communication, etc.), multi-data display and storage (operating time, real-time pressure, instantaneous flow, cumulative flow, time period flow), as well as timed addition, quantitative addition, segmented addition, one-key quick discharge, diaphragm self-test, parameter setting and other functions to achieve customized services and solve substantial problems for customers; it can be used as a pump as well as a flow meter to save costs, and truly achieve integrated metering and addition equipment.

[0026] In one preferred solution, the base 11 is provided with a through hole for installation.

[0027] A control system for a high-precision metering flow metering pump, wherein the metering pump is used to convey fluid materials and control the flow rate of the output fluid materials through the rotation speed; the pressure sensor is used to collect the working pressure change value of the pump at all times, and adopts the closed-loop negative feedback control principle. The changes in the working pressure will be collected in real time, so as to obtain more accurate data; the control board 3 is used to receive the collected flow signal in real time, and filter the flow signal, and then form a differential flow after differential processing through a special program, and then superimpose the time parameter to obtain an accurate flow value, and provide multi-interface control mode, multi-data display and storage; the display screen 4 is used to input instructions and display the current working status of the metering pump.

[0028] Working principle: When the metering pump is working, it will generate many variables, such as pressure, flow, temperature, etc. Among them, accurate flow is the variable parameter that people want to obtain most. Therefore, when the pump is working, its working pressure change value will be collected at all times. The pressure value will enter the CPU after sampling and filtering. The special program will perform differential processing to form a differential flow, and then superimpose the time parameter to obtain the accurate flow value. At this time, the pump has instantaneous flow and cumulative flow parameters. According to these parameters, the needs of many specific customers can be met, such as realizing fixed total amount addition (addition is completed within a specified time or speed), fixed instantaneous amount addition and other functions. Due to the closed-loop negative feedback control principle, changes in working pressure will be collected in real time, so as to obtain more accurate data.

[0029] The above is only a preferred embodiment of the present invention. It should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not depart from the technology and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.

Claims

1. High-precision flow metering pump, characterized by: It includes a metering pump housing, a one-way valve, a brushless motor transmission mechanism, a control panel, a display screen and a pressure sensor. The metering pump housing includes a base, an outer shell and a shell cover. The outer shell is installed on the base. The shell cover is used to cover the outer shell to form a cavity with a hollow structure. A pump head is provided on one side of the outer shell that is perpendicular to the shell cover and the base. The outlet end of the pump head is provided with a one-way valve and a brushless motor transmission mechanism arranged inside the cavity. The control panel is installed on the inner wall of the outer shell. The display screen is arranged on the shell cover. The pressure sensor is arranged at the outlet end of the pump head. The one-way valve is arranged at the connecting channel between the pump head and the brushless motor transmission mechanism. The brushless motor mechanism includes a brushless motor, a transmission box and a cylinder body. The cylinder body is connected to the one-way valve. The transmission box is driven to move by the brushless motor. The diaphragm is squeezed by mechanical reciprocating motion combined with the one-way valve, thereby generating working flow and pressure.

2. The high-precision flow metering pump according to claim 1 is characterized in that: The base is provided with a through hole for installation.

3. The control system of a high-precision flow metering pump according to any one of claims 1 and 2, characterized in that: include, Metering pump, used to transport fluid materials and control the flow rate of output fluid materials through the rotation speed; The pressure sensor is used to collect the working pressure change value of the pump at all times. It adopts the closed-loop negative feedback control principle. The changes in working pressure will be collected in real time to obtain more accurate data; The control panel is used to receive the collected flow signals in real time, filter the flow signals, perform differential processing through a dedicated program to form differential flow, and then superimpose time parameters to obtain accurate flow values, and provide multi-interface control modes, multi-data display and storage; Display screen, used to input instructions and display the current working status of the metering pump.

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