Automatic metering and conveying device for preparing two-component sealant

Abstract

The utility model provides an automatic metering and conveying device for preparing two-component sealant, which comprises a metering pump, a material conveying pipeline and a circulating cleaning pipeline, the input end and the output end of the metering pump are connected with the material conveying pipeline, and a pressure sensor is arranged on the material conveying pipeline; a first three-way electromagnetic valve and a second three-way electromagnetic valve are arranged at the two ends of the material conveying pipeline correspondingly, and one end of the first three-way electromagnetic valve and one end of the second three-way electromagnetic valve are connected with the tail ends of the two ends of the circulating cleaning pipeline correspondingly. A first three-way pipe and a second three-way pipe are arranged at the two ends of the circulating cleaning pipeline respectively, a water inlet pipe and a water outlet pipe are connected to the other end of the first three-way pipe and the other end of the second three-way pipe respectively, and a first electromagnetic switch valve and a second electromagnetic switch valve are arranged on the water inlet pipe and the water outlet pipe respectively. A one-way valve is arranged at a liquid outlet pipe at the bottom end of the cleaning agent storage tank, a liquid inlet pipe is arranged on the side wall of the upper end of the cleaning agent storage tank, a quantitative liquid injection device is arranged in the cleaning agent storage tank and quantitatively injects a cleaning agent into the circulating cleaning pipeline to be mixed with water, and cleaning liquid is formed under the pumping action of the metering pump and conducts circulating cleaning on the pipeline. And the labor burden is reduced, and the pipeline cleaning effect is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of sealant production, and in particular relates to an automatic metering and conveying device for preparing a two-component sealant. Background Art

[0002] Sealant is an adhesive used to fill the gaps in the structure to perform a sealing function. During the production process of sealants, a metering delivery pipeline is required to accurately measure the delivery amount of the sealant raw material. Traditional metering delivery pipelines mainly include flow meters, valves, pipes and other accessories for monitoring and controlling the flow of fluids. Since the base material of the sealant has a certain viscosity, some residues will accumulate on the inner wall of the pipeline after long-term material transportation, resulting in poor pipeline transportation and unstable flow output by the metering pump on the delivery pipeline, making it impossible to accurately measure the material delivery amount. Chinese patent document: CN202111526417.8, discloses a metering pump skid-mounted unit for continuous production. In this application, the cleaning fluid used for cleaning the internal circulation cleaning pipeline needs to be prepared in advance and then transported to the cleaning pipeline through an external pipeline. In the actual cleaning process, it is necessary to increase the preparation process of the cleaning fluid, which increases the manual burden. Utility Model Content

[0003] In view of the above problems, the utility model discloses an automatic metering and conveying device for preparing a two-component sealant, which solves the problems in the prior art that the cleaning liquid in the circulating cleaning pipeline needs to be prepared in advance and the automation level is low.

[0004] The specific technical solutions are as follows:

[0005] An automatic metering and conveying device for preparing a two-component sealant comprises a metering pump, a material conveying pipeline and a circulating cleaning pipeline, wherein the input end and the output end of the metering pump are connected to the material conveying pipeline, and a pressure sensor for detecting the conveying pressure of the pipeline is provided on the material conveying pipeline; a three-way solenoid valve 1 and a three-way solenoid valve 2 are respectively provided at both ends of the material conveying pipeline, one end of the three-way solenoid valve 1 and the three-way solenoid valve 2 are respectively connected to a feed pipe and a discharge pipe, and the other ends of the three-way solenoid valve 1 and the three-way solenoid valve 2 are respectively connected to the ends of both ends of the circulating cleaning pipeline; a three-way pipe 1 and a three-way pipe 2 are respectively provided at both ends of the circulating cleaning pipeline, the other ends of the three-way pipe 1 and the three-way pipe 2 are respectively connected to a water inlet pipe and a drain pipe, and the water inlet pipe and the drain pipe are respectively provided with an electromagnetic switch valve 1 and an electromagnetic switch valve 2, A cleaning agent storage tank is installed on the circulating cleaning pipeline, a one-way valve is provided at the liquid outlet pipe at the bottom end of the cleaning agent storage tank, a liquid inlet pipe is provided on the side wall of the upper end of the cleaning agent storage tank, and a quantitative liquid injection device is provided in the cleaning agent storage tank. The quantitative liquid injection device includes a servo motor, a screw rod, a guide rod, and a piston. The piston is movably arranged in the cleaning agent storage tank, a guide rod is arranged through the piston to guide the piston, a screw rod is threadedly connected to the center of the piston, the lower end of the screw rod is rotatably connected to a rotating seat arranged at the center of the bottom end of the cleaning agent storage tank, the upper end of the screw rod is driven to rotate by a servo motor arranged on the cleaning agent storage tank, and a drainage hole is provided at the outer side of the rotating seat at the bottom end of the cleaning agent storage tank, the drainage hole is connected with the one-way valve, and the screw rod is driven to rotate by the servo motor, so that the piston is displaced and the cleaning agent is pushed into the circulating cleaning pipeline through the one-way valve to realize the quantitative liquid injection function.

[0006] Furthermore, a sealing cover is provided on the liquid inlet pipe for sealing.

[0007] Furthermore, the drainage holes are multiple in number and arranged in a ring shape on the outside of the rotating seat.

[0008] Furthermore, a liquid level sensor is provided on the inner wall of the bottom end of the cleaning agent storage tank.

[0009] Furthermore, a PLC controller is included, which is respectively connected to the metering pump, three-way solenoid valve 1, three-way solenoid valve 2, solenoid switch valve 1 and solenoid switch valve 2, a pressure sensor, a servo motor and a liquid level sensor to realize automatic cleaning of the pipeline.

[0010] Furthermore, the number of the guide rods is at least two, and the two guide rods are respectively connected to two sides of the piston, and both ends of the guide rods are respectively fixedly connected to two ends of the inner wall of the cleaning agent storage tank.

[0011] The beneficial effects of the utility model are embodied in:

[0012] The utility model discloses the circulation cleaning pipeline has a high degree of automation. After the pressure sensor detects the existence of blockage in the material conveying pipeline, the controller can be used to control the switching of the three-way solenoid valves at both ends to connect the material conveying pipeline with the circulation cleaning pipeline. Subsequently, the solenoid switch valve 1 is opened to allow water to enter the circulation cleaning pipeline. At the same time, the quantitative liquid injection device in the storage tank is started and the cleaning agent and water are quantitatively injected into the circulation cleaning pipeline to mix. The cleaning liquid is formed under the pumping action of the metering pump and the pipeline is circulated and cleaned, which reduces the labor burden and improves the pipeline cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] Figure 2 It is a schematic diagram of the internal structure of the cleaning agent storage tank in the utility model.

[0015] Metering pump 1, material conveying pipeline 2, feed pipe 21, discharge pipe 22, pressure sensor 23, circulation cleaning pipeline 3, three-way pipe 1 31, three-way pipe 2 32, water inlet pipe 33, drain pipe 34, solenoid switch valve 1 35, solenoid switch valve 2 36, three-way solenoid valve 1 4, three-way solenoid valve 2 5, cleaning agent storage tank 6, one-way valve 61, liquid inlet pipe 62, sealing cover 621, quantitative liquid injection device 63, servo motor 631, screw 632, guide rod 633, piston 634, rotating seat 635, liquid level sensor 636, drainage hole 64. DETAILED DESCRIPTION

[0016] In order to make the technical solution of the utility model clearer, the utility model is further described below in conjunction with the accompanying drawings. Any equivalent replacement of the technical features of the technical solution of the utility model and any solution derived from conventional reasoning shall fall within the protection scope of the utility model. The fixed connection and fixed setting mentioned in the utility model are all common connection methods in the mechanical field, including welding, bolt and nut connection, and screw connection.

[0017] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and 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.

[0018] like Figure 1-2As shown, this embodiment provides an automatic metering and conveying device for preparing a two-component sealant, including a metering pump 1, a material conveying pipeline 2 and a circulating cleaning pipeline 3. The input and output ends of the metering pump 1 are connected to the material conveying pipeline 2. The material conveying pipeline 2 is provided with a pressure sensor 23 for detecting the pipeline conveying pressure. When the conveying pipeline is blocked, the pressure sensor 23 will send a signal to the controller for processing. A three-way solenoid valve 1 4 and a three-way solenoid valve 2 5 are respectively provided at both ends of the material conveying pipeline 2. One end of the three-way solenoid valve 1 4 and the three-way solenoid valve 2 5 is respectively connected to a feed pipe 21 and a discharge pipe 22, and the other ends of the three-way solenoid valve 1 4 and the three-way solenoid valve 2 5 are respectively connected to the two end ends of the circulating cleaning pipeline 3; a three-way pipe 1 31 and a three-way pipe 2 32 are respectively provided at both ends of the circulating cleaning pipeline 3. The other ends of the three-way pipe 1 31 and the three-way pipe 2 32 are respectively connected to a water inlet pipe 33 and a drain pipe 34. The water inlet pipe 33 An electromagnetic switch valve 1 35 and an electromagnetic switch valve 2 36 are respectively provided on the water inlet pipe 33 and the drain pipe 34. The water inlet pipe 33 is used to connect to the tap water source. The drain pipe 34 is used to discharge the waste liquid after cleaning. A cleaning agent storage tank 6 is installed on the circulating cleaning pipeline 3. A one-way valve 61 is provided at the liquid outlet pipe at the bottom end of the cleaning agent storage tank 6. The one-way valve 61 can prevent the liquid in the circulating cleaning pipeline 3 from entering the cleaning agent storage tank 6. A liquid inlet pipe 62 for adding cleaning agent is provided on the upper side wall of the cleaning agent storage tank 6. A sealing cover 621 is provided on the liquid inlet pipe 62 for sealing.

[0019] A quantitative liquid injection device 63 is provided in the cleaning agent storage tank 6, and the quantitative liquid injection device 63 includes a servo motor 631, a screw rod 632, a guide rod 633, and a piston 634. The piston 634 is movably arranged in the cleaning agent storage tank 6. The guide rod 633 is penetrated by the piston 634 and guides the piston 634. The number of the guide rods 633 is at least two, and the two guide rods 633 are respectively connected to the two sides of the piston 634, and the two ends of the guide rods 633 are respectively fixedly connected to the two ends of the inner wall of the cleaning agent storage tank 6; the center of the piston 634 is threadedly connected to the screw rod 632, and the lower end of the screw rod 632 is connected to the inner wall of the cleaning agent storage tank 6. The rotating seat 635 at the center of the bottom end of the cleaning agent storage tank 6 is rotatably connected, and the upper end of the screw rod 632 is driven to rotate by the servo motor 631 arranged on the cleaning agent storage tank 6, and the bottom end of the cleaning agent storage tank 6 is located on the outside of the rotating seat 635 and is provided with a drainage hole 64. The number of drainage holes 64 is several and they are arranged in a ring shape on the outside of the rotating seat 635. The drainage holes 64 are all connected to the one-way valve 61. The servo motor 631 drives the screw rod 632 to rotate, so that the piston 634 is displaced and pushes the cleaning agent through the one-way valve 61 into the circulating cleaning pipeline 3, thereby realizing the quantitative injection function.

[0020] In this embodiment, a liquid level sensor 636 is provided on the inner wall at the bottom end of the cleaning agent storage tank 6. The liquid level sensor 636 is used to detect the amount of cleaning agent in the cleaning agent storage tank 6. When the amount of cleaning agent is too low, a signal is sent to the controller to prompt the operator to replenish it in time.

[0021] In this embodiment, the controller is a PLC controller, which is respectively connected to the metering pump 1, three-way solenoid valve 1 4, three-way solenoid valve 2 5, solenoid switch valve 1 35 and solenoid switch valve 2 36, pressure sensor 23, servo motor 631 and liquid level sensor 636 to realize automatic cleaning of the pipeline.

[0022] Working principle of the utility model: when conveying materials normally, materials enter the material conveying pipeline 2 through the feed pipe 21 and are discharged from the discharge pipe. When the pressure sensor 23 detects that there is a blockage in the material conveying pipeline 2, a signal is sent to the PLC controller and the operator is prompted that the pipeline is blocked. Then, the PLC controller is operated to control the switching of the three-way solenoid valves 14 and 2 at both ends, so that the two ends of the material conveying pipeline 2 are connected with the two ends of the circulating cleaning pipeline 3. Then, by opening the electromagnetic switch valve 135, water enters the circulating cleaning pipeline 3. At the same time, the quantitative injection device 63 in the storage tank is started and the cleaning agent and water are quantitatively injected into the circulating cleaning pipeline 3 to mix. Under the pumping action of the metering pump 1, a cleaning liquid is formed and the pipeline is circulated and cleaned. After cleaning, the electromagnetic switch valve 236 is opened, and the cleaning waste liquid is discharged through the drain pipe 34. Then, the electromagnetic switch valves 135 and 2 are closed, and the three-way electromagnetic valves 14 and 2 are switched, so that the material conveying pipeline 2 is connected with the feed pipe 21 and the discharge pipe 22 again, so that the material metering and conveying operation is carried out normally.

[0023] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a technician familiar with the technical field within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. An automatic metering and conveying device for preparing a two-component sealant, comprising a metering pump (1), a material conveying pipeline (2) and a circulating cleaning pipeline (3), wherein the input end and the output end of the metering pump (1) are connected to the material conveying pipeline (2), and the material conveying pipeline (2) is provided with a pressure sensor (23) for detecting the pipeline conveying pressure; characterized in that: A three-way solenoid valve (4) and a three-way solenoid valve (5) are respectively provided at both ends of the material conveying pipeline (2); one end of the three-way solenoid valve (4) and the three-way solenoid valve (5) are respectively connected to a feed pipe (21) and a discharge pipe (22); the other ends of the three-way solenoid valve (4) and the three-way solenoid valve (5) are respectively connected to the ends of the two ends of the circulation cleaning pipeline (3); a three-way pipe (31) and a three-way pipe (32) are respectively provided at both ends of the circulation cleaning pipeline (3); The other ends of the first through pipe (31) and the second three-way pipe (32) are connected to a water inlet pipe (33) and a drain pipe (34), respectively. The water inlet pipe (33) and the drain pipe (34) are provided with a first electromagnetic switch valve (35) and a second electromagnetic switch valve (36), respectively. A cleaning agent storage tank (6) is installed on the circulating cleaning pipeline (3). A check valve (61) is provided at the liquid outlet pipe at the bottom end of the cleaning agent storage tank (6). A liquid inlet pipe (62) is provided on the side wall of the upper end of the cleaning agent storage tank (6). A quantitative liquid injection device (63) is provided, the quantitative liquid injection device (63) comprising a servo motor (631), a screw rod (632), a guide rod (633), and a piston (634), wherein the piston (634) is movably arranged in the cleaning agent storage tank (6), the guide rod (633) is arranged through the piston (634) and guides the piston (634), the center of the piston (634) is threadedly connected to the screw rod (632), the lower end of the screw rod (632) is connected to a rotating seat (633) arranged at the center of the bottom end of the cleaning agent storage tank (6) 5) Rotational connection, the upper end of the screw rod (632) is driven to rotate by a servo motor (631) disposed on the cleaning agent storage tank (6), and a drainage hole (64) is disposed on the outer side of the rotating seat (635) at the bottom end of the cleaning agent storage tank (6), and the drainage hole (64) is communicated with the one-way valve (61). The servo motor (631) drives the screw rod (632) to rotate, so that the piston (634) is displaced and the cleaning agent is pushed into the circulating cleaning pipeline (3) through the one-way valve (61), thereby realizing a quantitative liquid injection function.

2. The automatic metering and conveying device for preparing a two-component sealant according to claim 1, characterized in that: The liquid inlet pipe (62) is provided with a sealing cover (621) for sealing.

3. The automatic metering and conveying device for preparing a two-component sealant according to claim 1, characterized in that: The drainage holes (64) are multiple in number and arranged in a ring shape on the outside of the rotating seat (635).

4. The automatic metering and conveying device for preparing a two-component sealant according to claim 1, characterized in that: A liquid level sensor (636) is provided on the inner wall of the bottom end of the cleaning agent storage tank (6).

5. The automatic metering and conveying device for preparing a two-component sealant as claimed in claim 4, characterized in that: The invention also comprises a PLC controller, wherein the PLC controller is respectively connected to the metering pump (1), the first three-way solenoid valve (4), the second three-way solenoid valve (5), the first solenoid switch valve (35), the second solenoid switch valve (36), the pressure sensor (23), the servo motor (631) and the liquid level sensor (636), so as to realize automatic cleaning of the pipeline.

6. The automatic metering and conveying device for preparing a two-component sealant according to claim 1, characterized in that: The number of the guide rods (633) is at least two, and the two guide rods (633) are respectively connected to two sides of the piston (634), and the two ends of the guide rods (633) are respectively fixedly connected to two ends of the inner wall of the cleaning agent storage tank (6).

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