Liquid material metering and feeding device

Abstract

The utility model discloses a liquid material metering and feeding device, which relates to the technical field of liquid material feeding devices, and comprises a liquid storage component and a feeding component, the liquid storage component consists of a liquid storage tank and a feeding pipe, the feeding pipe is fixed at the top of the liquid storage tank and is used for providing a channel for adding liquid materials into the liquid storage tank, and the feeding component is fixed at the top of the liquid storage tank. The feeding assembly comprises a discharging pipe, a magnetic pump, a stop valve, a connecting pipe, a first electric three-way valve, a filter, a second electric three-way valve, a flow meter, a third electric three-way valve and an electromagnetic valve. By arranging the liquid storage and feeding assembly, metering and feeding of liquid materials can be achieved, meanwhile, by means of the structural arrangement of the two filters, the first electric three-way valve and the second electric three-way valve, normal feeding can still be achieved in the process of cleaning one filter, and by means of the structural arrangement of the third electric three-way valve and the backflow pipe, normal feeding can be achieved. And air in the filter can be conveniently cleaned, so that good precision of subsequent feeding is kept.

Description

Technical Field

[0001] This utility model relates to the technical field of liquid material feeding devices, specifically a liquid material metering and feeding device. Background Technology

[0002] With the development of industrial automation technology, the requirements for feeding liquid materials are becoming increasingly precise. Therefore, existing factory production facilities are equipped with corresponding liquid material metering and feeding devices. These devices typically include: a magnetic pump, a filter, a shut-off valve, a flow meter, a solenoid valve, and a flow controller. Their operating principle is as follows:

[0003] Input the weight of the liquid material on the flow controller display screen. The system converts the weight into volume. Then press the start button. The magnetic pump starts and the solenoid valve opens. The magnetic pump can transport the liquid material in the storage tank to the feeding area. During this process, the flow meter measures and detects the liquid being transported and transmits the data to the flow controller. When the measurement reaches the set amount, the magnetic pump stops working and the solenoid valve closes. This achieves accurate feeding of the liquid material.

[0004] During the liquid material conveying process, filters can be used to filter the liquid material to prevent impurities from entering the material feeding area. Therefore, the filters need to be disassembled and cleaned regularly. However, traditional conveying pipelines only have one filter. Therefore, when the filter is disassembled and cleaned, the material conveying pipeline needs to be shut down, which will affect the operation of subsequent processes. At the same time, after the filter is cleaned and reinstalled, there is excess air in the pipeline. Direct operation at this time will lead to inaccurate metering. Based on this, a liquid material metering and feeding device is provided. Utility Model Content

[0005] The purpose of this utility model is to provide a liquid material metering and feeding device in order to solve the problems mentioned above.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a liquid material metering and feeding device, comprising a liquid storage assembly consisting of a storage tank and a feed pipe, wherein the feed pipe is fixed to the top of the storage tank and provides a channel for adding liquid material into the storage tank; and a feeding assembly comprising a discharge pipe, a magnetic pump, a shut-off valve, a connecting pipe, a first electric three-way valve, a filter, a second electric three-way valve, a flow meter, a third electric three-way valve, and a solenoid valve; the two ends of the discharge pipe are respectively connected to the bottom of the storage tank and the input end of the magnetic pump; the shut-off valve is installed at the top of the output end of the magnetic pump, and the top of the shut-off valve is connected to the input port of the first electric three-way valve through a connecting pipe; the two output ports of the first electric three-way valve are respectively connected to the input ends of two filters through two other connecting pipes. The two filter outputs are connected to the two input ports of the second electric three-way valve via connecting pipes. The output port of the second electric three-way valve is connected to the input port of the flow meter via a connecting pipe. The output port of the flow meter is connected to the input port of the third electric three-way valve via a connecting pipe. One output port of the third electric three-way valve is connected to a solenoid valve. The other end of the solenoid valve is connected to the material feeding area via a connecting pipe. The channel formed by the shut-off valve, any one of the filters, the second electric three-way valve, the flow meter, the third electric three-way valve, the solenoid valve, and the connecting pipe is used to realize the metering and feeding of liquid materials. The channel switching of the first electric three-way valve and the second electric three-way valve is used to switch the use of the two filters, thereby realizing the cleaning operation of one of the filters without stopping the material conveying.

[0007] As a further improvement of this utility model: a return pipe is provided between the third electric three-way valve and the storage tank, and the two ends of the return pipe are respectively connected to the top of the storage tank and one of the conveying ports of the third electric three-way valve; after the filter is cleaned, the return pipe is connected to the flow meter by switching the third electric three-way valve, so as to realize the material return to the inside of the storage tank to achieve the effect of removing air.

[0008] As a further improvement of this utility model, a breather valve is also installed on the top of the liquid storage tank, which is used to balance the air pressure inside the liquid storage tank.

[0009] As a further embodiment of this utility model: a level gauge and a temperature sensor are also installed on the outside of the liquid storage tank. The level gauge, temperature sensor, and flow meter are electrically connected to an external controller via data cables. The control terminals of the magnetic pump, the first electric three-way valve, the second electric three-way valve, the third electric three-way valve, and the solenoid valve are electrically connected to the external controller via cables.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] By setting up a liquid storage tank and a feeding assembly, the liquid material in the material area can be metered and fed. At the same time, through the structure of two filters and the first and second electric three-way valves, the feeding can still be carried out normally while cleaning one filter. Furthermore, through the structure of the third electric three-way valve and the return pipe, the air in the filter can be easily cleaned, so that the subsequent feeding can maintain good accuracy. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a structural schematic diagram from another perspective of the present invention.

[0014] In the diagram: 1. Liquid storage assembly; 101. Liquid storage tank; 102. Feed pipe; 103. Breathing valve; 104. Level gauge; 105. Temperature sensor; 2. Feeding assembly; 201. Discharge pipe; 202. Magnetic pump; 203. Shut-off valve; 204. Connecting pipe; 205. First electric three-way valve; 206. Filter; 207. Second electric three-way valve; 208. Flow meter; 209. Third electric three-way valve; 210. Solenoid valve; 211. Return pipe. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figures 1-2 In this embodiment of the present invention, a liquid material metering and feeding device includes a liquid storage assembly 1 consisting of a liquid storage tank 101 and a feed pipe 102. The feed pipe 102 is fixed to the top of the liquid storage tank 101 and is used to provide a channel for adding liquid material into the liquid storage tank 101. The device also includes a feeding assembly 2, which includes a discharge pipe 201, a magnetic pump 202, a shut-off valve 203, a connecting pipe 204, a first electric three-way valve 205, a filter 206, a second electric three-way valve 207, a flow meter 208, a third electric three-way valve 209, and a solenoid valve 210.

[0017] The two ends of the discharge pipe 201 are connected to the bottom of the storage tank 101 and the input end of the magnetic pump 202, respectively. The shut-off valve 203 is installed at the top of the output end of the magnetic pump 202, and the top of the shut-off valve 203 is connected to the input port of the first electric three-way valve 205 through the connecting pipe 204.

[0018] The two output ports of the first electric three-way valve 205 are connected to the input ports of the two filters 206 respectively through two other connecting pipes 204. The output ports of the two filters 206 are connected to the two input ports of the second electric three-way valve 207 respectively through connecting pipes 204.

[0019] The output port of the second electric three-way valve 207 is connected to the input port of the flow meter 208 through the connecting pipe 204. The output port of the flow meter 208 is connected to the input port of the third electric three-way valve 209 through the connecting pipe 204. One output port of the third electric three-way valve 209 is connected to the solenoid valve 210. The other end of the solenoid valve 210 is connected to the material feeding area through the connecting pipe 204.

[0020] The channel consisting of shut-off valve 203, any filter 206, second electric three-way valve 207, flow meter 208, third electric three-way valve 209, solenoid valve 210, and connecting pipe 204 is used to realize the metering and feeding of liquid materials.

[0021] The switching of the channels of the first electric three-way valve 205 and the second electric three-way valve 207 is used to switch the use of the two filters 206, thereby enabling the cleaning operation of one of the filters 206 without stopping the material conveying.

[0022] The liquid storage tank 101 is also equipped with a level gauge 104 and a temperature sensor 105. The level gauge 104, temperature sensor 105, and flow meter 208 are electrically connected to an external controller via a data cable. The control terminals of the magnetic pump 202, the first electric three-way valve 205, the second electric three-way valve 207, the third electric three-way valve 209, and the solenoid valve 210 are electrically connected to the external controller via cables.

[0023] In this embodiment, the operation steps for loading materials are as follows:

[0024] 1. First, input the weight of the liquid material on the external controller display screen. The system will convert the weight into volume and output it through an electrical signal.

[0025] 2. Press the start button. The magnetic pump 202 starts and the solenoid valve 210 opens simultaneously. (It should be noted that the shut-off valve 203 is initially in the conducting state by default. In the initial state of the first electric three-way valve 205 and the second electric three-way valve 207, a filter 206 is connected to the shut-off valve 203 and the flow meter 208, and the third electric three-way valve 209 connects the flow meter 208 to the solenoid valve 210.) The channel consisting of the discharge pipe 201, shut-off valve 203, first electric three-way valve 205, filter 206, second electric three-way valve 207, flow meter 208, third electric three-way valve 209, and solenoid valve 210 is open. At this time, the magnetic pump 202 transports the liquid material inside the storage tank 101 to the material use area. During this process, the flow meter 209 measures the transported liquid material.

[0026] 3. The data measured by the flow meter 209 is transmitted to the external controller. When the measured value reaches the set amount, the magnetic pump 202 stops working and the solenoid valve 210 closes, thus completing the precise feeding of a single liquid material.

[0027] Please refer to this carefully. Figures 1-2 A return pipe 211 is provided between the third electric three-way valve 209 and the liquid storage tank 101. The two ends of the return pipe 211 are respectively connected to the top of the liquid storage tank 101 and one of the delivery ports of the third electric three-way valve 209.

[0028] After the filter 206 is cleaned, the third electric three-way valve 209 is used to switch the return pipe 211 to the flow meter 208 to achieve the effect of material returning to the storage tank 101 to remove air.

[0029] A breather valve 103 is also installed on the top of the liquid storage tank 101. The breather valve 103 is used to balance the internal air pressure of the liquid storage tank 101.

[0030] In this embodiment: During the process of conveying liquid materials, filter 206 can filter impurities in the liquid materials. When there are many impurities inside filter 206 and it needs to be cleaned, the operation steps are as follows:

[0031] The first electric three-way valve 205 and the second electric three-way valve 207 are switched by an external controller, so that another filter 206 is connected to the shut-off valve 203 and the flow meter 208, while the filter 206 to be cleaned is cut off. At this time, the other filter 206 can ensure the smooth flow of the conveying pipeline. In this way, when the filter 206 to be cleaned is disassembled and cleaned, normal feeding operation can be carried out.

[0032] Once the filter 206 to be cleaned is cleaned and reinstalled, it can continue to be fed through the above pipeline. The cleaned filter 206 is left idle.

[0033] When another filter 206 needs to be cleaned, the first electric three-way valve 205 and the second electric three-way valve 207 can be switched again by the external controller, and the third electric three-way valve 209 can be switched at the same time, so that the solenoid valve 210 and the flow meter 208 are cut off, and the return pipe 211 is connected to the flow meter 208.

[0034] Then, the magnetic pump 202 is started. At this time, the liquid material flows along the following pipelines: discharge pipe 201, shut-off valve 203, first electric three-way valve 205, cleaned filter 206, second three-way valve 207, flow meter 208, third electric three-way valve 209, and return pipe 211. In this way, the air in the cleaned filter 206 can flow back into the storage tank 101 along with the liquid material. At this time, the air entering the storage tank 101 can be discharged through the breather valve 203, which can keep the air pressure inside the storage tank 101 balanced.

[0035] After the air in the filter 206 is completely removed, the third electric three-way valve 209 is switched again by the external controller, so that the solenoid valve 210 is connected to the flow meter 208 again, and the subsequent feeding operation can be carried out.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A liquid material metering and feeding device, comprising a liquid storage assembly (1) consisting of a liquid storage tank (101) and a feed pipe (102), wherein the feed pipe (102) is fixed to the top of the liquid storage tank (101), and further comprising a feeding assembly (2), characterized in that, The feeding assembly (2) includes a discharge pipe (201), a magnetic pump (202), a shut-off valve (203), a connecting pipe (204), a first electric three-way valve (205), a filter (206), a second electric three-way valve (207), a flow meter (208), a third electric three-way valve (209), and a solenoid valve (210). The discharge pipe (201) is connected at both ends to the bottom of the storage tank (101) and the input end of the magnetic pump (202). The shut-off valve (203) is installed at the top of the output end of the magnetic pump (202), and the top of the shut-off valve (203) is connected to the input port of the first electric three-way valve (205) via the connecting pipe (204). The first electric three-way valve (205)... Two output ports are connected to the input ends of two filters (206) respectively through two other connecting pipes (204). The output ends of the two filters (206) are connected to the two input ports of the second electric three-way valve (207) respectively through connecting pipes (204). The output port of the second electric three-way valve (207) is connected to the input end of the flow meter (208) through connecting pipes (204). The output end of the flow meter (208) is connected to the input port of the third electric three-way valve (209) through connecting pipes (204). One output port of the third electric three-way valve (209) is connected to the solenoid valve (210). The other end of the solenoid valve (210) is connected to the material feeding area through connecting pipes (204).

2. The liquid material metering and feeding device according to claim 1, characterized in that, A return pipe (211) is provided between the third electric three-way valve (209) and the liquid storage tank (101). The two ends of the return pipe (211) are respectively connected to the top of the liquid storage tank (101) and one delivery port of the third electric three-way valve (209).

3. The liquid material metering and feeding device according to claim 1, characterized in that, A breather valve (103) is also installed on the top of the storage tank (101).

4. The liquid material metering and feeding device according to claim 1, characterized in that, The liquid storage tank (101) is also equipped with a level gauge (104) and a temperature sensor (105). The level gauge (104), temperature sensor (105), and flow meter (208) are electrically connected to an external controller via data cables. The control terminals of the magnetic pump (202), the first electric three-way valve (205), the second electric three-way valve (207), the third electric three-way valve (209), and the solenoid valve (210) are electrically connected to the external controller via cables.

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