Viscous liquid material conveying device

Abstract

The invention provides a viscous liquid material conveying device, and relates to the technical field of material conveying. The device comprises a viscous liquid storage tank, a conveying pipeline, a material conveying pump, a collecting pool, an adding pipeline, a flushing pipeline and a backflow pipeline. A bottom outlet of the viscous liquid storage tank is connected to the adding pipeline through a conveying pipeline and a material conveying pump, and an outlet of the material conveying pump is connected to a collecting pool; one end of the flushing pipeline is connected with a factory flushing water pipe, the other end of the flushing pipeline is connected to the conveying pipeline, the flushing pipeline is used for flushing the conveying pipeline, and flushing wastewater is introduced into the collecting tank; the return pipeline is connected with a return flow meter and is connected between an inlet of the conveying flow meter and the viscous liquid storage tank; and the control station is used for receiving and analyzing the flow data and then controlling the on-off of each pipeline. The device can switch the working modes of the material conveying pump, guarantees the pressure balance of the pipeline, enables the material to be conveyed stably, eliminates the blockage of the pipeline, and accurately controls the flow by automatically controlling the state of each valve.

Description

Technical Field

[0001] The invention relates to the technical field of material conveying, in particular to a viscous liquid material conveying device. Background Art

[0002] In the actual production of viscous liquid materials, when the viscous liquid materials are transported by pipeline and mixed with other materials in proportion, due to the instability of the transported material volume, the viscous materials will adhere to the inner wall of the pipeline after long-term transportation and use, resulting in scaling, affecting the transportation efficiency and causing unstable transportation flow. In addition, when the transportation volume of other materials changes, affecting the accuracy of the ratio, the frequent adjustment of the frequency conversion system will affect the pressure of the transportation pipeline system, or the signal transmission of the pipeline transportation system and the delay of equipment response, etc., will cause the instability of material transportation, affecting the system transportation accuracy and process production stability.

[0003] In view of the above reasons, the present invention proposes a viscous liquid material conveying device to solve the above technical problems. Summary of the invention

[0004] The object of the present invention is to provide a viscous liquid material conveying device, which can switch the working mode of the material conveying pump, ensure the pressure balance of the pipeline, make the material conveying stable, eliminate pipeline blockage, and accurately control the flow rate.

[0005] The present invention provides a viscous liquid material conveying device, comprising: a viscous liquid storage tank, a conveying pipeline, a material conveying pump, a collecting tank, a distribution pipeline, a flushing pipeline and a reflux pipeline;

[0006] The bottom outlet of the viscous liquid storage tank is connected to the distribution pipeline through a delivery pipeline and a material delivery pump, and the outlet of the material delivery pump is connected to the collection tank through a manual gate valve;

[0007] One end of the flushing pipeline is connected to the factory flushing water pipe, and the other end is connected to the delivery pipeline, which is used to flush the delivery pipeline, and the waste water after flushing is passed into the collection tank;

[0008] The inlet of the addition pipeline is connected to a delivery flow meter, the return pipeline is connected to a return flow meter, and the return pipeline is connected between the inlet of the delivery flow meter and the viscous liquid storage tank;

[0009] The control station is used to receive flow data, analyze it, and then issue instructions to control the on and off of each pipeline.

[0010] Preferably, a manual gate valve is provided at the bottom outlet of the viscous liquid storage tank.

[0011] Preferably, the conveying pipeline includes a main pipeline and a backup pipeline, and the main pipeline and the backup pipeline are respectively provided with a material conveying pump, and the two material conveying pumps are one for use and one for backup, and can be switched remotely or locally.

[0012] Preferably, electric gate valves are respectively provided at the front ends of the inlets of the two material conveying pumps.

[0013] Preferably, the inlet of the main pipeline is further provided with an electric gate main valve, and the inlet of the standby pipeline is connected to the side of the electric gate main valve away from the viscous liquid storage tank.

[0014] Preferably, the outlet ends of the two material delivery pumps and the inlet of the addition pipeline are respectively provided with electric ball valves.

[0015] Preferably, the inlet of the return pipeline is connected to a flange metal hose.

[0016] Preferably, the flushing pipeline is provided with three branches, and the three branches are respectively connected to the outlets of the two electric gate valves and the outlet of the electric gate main valve.

[0017] Preferably, each branch of the flushing pipeline is respectively connected with a check valve and a manual ball valve.

[0018] Preferably, the control station is provided with a host, a touch screen and a PLC module, wherein the PLC module is used to collect data from the delivery flow meter and the reflux flow meter, the host is used to send instructions to the material delivery pump and each valve to control their operation, and the touch screen is used to display the collected data values ​​and various parameter setting values.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The conveying amount of viscous materials in the distribution pipeline is set to maintain a fixed ratio with other materials. When the amount of other materials changes, the information is collected and transmitted to the control station. After data feedback analysis, a signal instruction to increase or decrease the flow rate is issued. If the signal instruction is to increase the flow rate, the motor operating frequency of the material conveying pump is increased to increase the output; if the signal instruction is to reduce the flow rate, the motor operating frequency of the material conveying pump is gradually reduced to the minimum set value, thereby conveniently and accurately controlling the material conveying flow rate to ensure stable material conveying and balanced pipeline pressure;

[0021] 2. Since the minimum setting value of the material conveying pump cannot be too low, otherwise it will cause insufficient conveying pressure in the pipeline and affect the use of the pipeline end. Therefore, when the motor operating frequency of the material conveying pump reaches the minimum setting value, the motor will reduce the frequency and stop, and lock the frequency to run at a fixed frequency. At this time, if the output flow is still too large, the control station will issue a command to open the return pipeline and transport the excess flow in the conveying pipeline to the storage tank through the return pipeline until the output flow reaches the command value given by the control station;

[0022] 3. When the material conveying pump stops running, the clean water can be turned on through remote automation control to clean the residual viscous materials in the pipeline and pump through the flushing pipeline in preparation for the next start-up. This device can realize automatic control of the equipment, avoid the situation where the equipment operation is unstable due to errors caused by manual valve switching, realize the stable material conveying control logic and automatic backwashing after stopping the material, greatly improve the accuracy of batching and the continuity of production. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a structural diagram of the viscous liquid material conveying device of the present invention;

[0025] Description of reference numerals:

[0026] 1: viscous liquid storage tank; 101: slurry spiral agitator; 102: first manual gate valve; 103: electric gate main valve; 2: delivery pipeline; 201: main pipeline; 202: spare pipeline; 203: first electric gate valve; 204: second electric gate valve; 205: second manual gate valve; 206: third manual gate valve; 207: first electric ball valve; 208: second electric ball valve; 209: third electric ball valve; 3: material delivery pump; 4: collection tank; 5: distribution pipeline; 501: delivery flow meter; 6: flushing pipeline 601: check valve; 602: manual ball valve; 7: reflux pipeline; 701: reflux flow meter; 702: electric regulating valve; 703: flange metal hose. DETAILED DESCRIPTION

[0027] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. 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.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0029] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected" and "connected" 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 mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] like Figure 1As shown, the present invention provides a viscous liquid material conveying device, comprising: a viscous liquid storage tank 1, a conveying pipeline 2, a material conveying pump 3, a collecting tank 4, a distribution pipeline 5, a flushing pipeline 6 and a reflux pipeline 7, wherein the bottom outlet of the viscous liquid storage tank 1 is connected to the distribution pipeline 5 through the conveying pipeline 2 and the material conveying pump 3, and the outlet of the material conveying pump 3 is connected to the collecting tank 4 through a manual gate valve; one end of the flushing pipeline 6 is connected to the factory flushing water pipe, and the other end is connected to the conveying pipeline 2, which is used to flush each section of the conveying pipeline 2 and the material The delivery pump 3 is used for flushing, and the waste water after flushing is passed to the collection tank 4 for collection; the inlet of the distribution pipeline 5 is connected to the delivery flow meter 501, and the reflux pipeline 7 is connected to the reflux flow meter 701. The reflux pipeline 7 is connected between the inlet of the delivery flow meter 501 and the viscous liquid storage tank 1, and is used to be connected when the flow rate of the viscous liquid is too large and cannot be further adjusted by the material delivery pump 3, so that part of the viscous liquid flows back to the viscous liquid storage tank 1; the control station is used to receive the flow data and issue instructions to control the opening and closing of each pipeline after analysis.

[0031] A slurry spiral agitator 101 is provided in the viscous liquid storage tank 1. The slurry spiral agitator 101 can be used to stir the viscous liquid to make it more uniform before transportation and reduce adhesion to the pipeline. The bottom outlet of the viscous liquid storage tank 1 is provided with a first manual gate valve 102 that can control the outflow of material. After opening the first manual gate valve 102, the viscous liquid material can be transported.

[0032] In this embodiment, the conveying pipeline 2 includes a main pipeline 201 and a spare pipeline 202. The entrance of the main pipeline 201 is also provided with an electric gate main valve 103. The entrance of the spare pipeline 202 is connected to the side of the electric gate main valve 201 away from the viscous liquid storage tank 1. The main pipeline 201 and the spare pipeline 202 can be uniformly controlled through the electric gate main valve 201, so as to uniformly control the start and stop of the material conveying work. A material conveying pump 3 is respectively provided on the main pipeline 201 and the spare pipeline 202. The two material conveying pumps 3 are one for use and one for backup, and can be switched remotely or locally. Since the viscous liquid material has a certain viscosity, when the material stops conveying or the pump is running, the pipeline and the material conveying pump need to be cleaned with clean water to avoid sticking to the pipeline or the pump body, which affects the next use.

[0033] In this embodiment, the inlet front ends of the two material conveying pumps 3 are respectively provided with electric gate valves, wherein the inlet end of the material conveying pump 3 on the main pipeline 201 is connected to the first electric gate valve 203, and the inlet end of the material conveying pump 3 on the standby pipeline 202 is connected to the second electric gate valve 204. The opening and closing of the first electric gate valve 203 and the second electric gate valve 204 can control the on and off of the main pipeline 201 and the standby pipeline 202, so as to realize the switching use of the two material conveying pumps 3. When a material conveying pump 3 is in standby or the device stops conveying materials, the flushing pipeline 6 can be used to flush the corresponding pipeline and material conveying pump 3 with clean water. The outlets of the material conveying pumps 3 on the main pipeline 201 and the standby pipeline 202 are respectively connected to the collection pool 4 through the second manual gate valve 205 and the third manual gate valve 206, and the waste water after flushing is passed into the collection pool 4 for temporary storage.

[0034] In this embodiment, the outlet end of the material delivery pump 3 on the main pipeline 201 is provided with a first electric ball valve 207, the outlet end of the material delivery pump 3 on the spare pipeline 202 is provided with a second electric ball valve 208, and the inlet of the addition pipeline 5 is provided with a third electric ball valve 209. The third electric ball valve 209 is provided on the side of the delivery flow meter 501 away from the addition pipeline 5, and the inlet of the return pipeline 7 is located between the third electric ball valve 209 and the delivery flow meter 501. Through the provision of each electric ball valve, the viscous liquid can only flow in one direction along the main pipeline 201 and the spare pipeline 202, but cannot flow back, and is closed when flushing the pipeline to ensure that the flushing wastewater flows into the collection tank 4.

[0035] The return pipe 7 is connected with an electric regulating valve 702. By adjusting the opening of the electric regulating valve 702, the return flow rate can be adjusted. The inlet of the return pipe 7 is connected with a flange metal hose 703. When the return pipe 7 is running, since the flow rate is always changing, the unevenness of the fluid in the pipe will cause the pipe to vibrate, affecting the safe and stable operation of the return flow meter 701 and the electric regulating valve 702 on the pipe. Therefore, a flange metal hose 703 is set at the front end of the pipe to offset the vibration and ensure the stability of the pipe.

[0036] In this embodiment, the beginning of the flushing pipeline 6 is connected to the factory flushing water pipe, which is provided with three branches, wherein the ends of two branches are respectively connected to the outlets of the first electric gate valve 203 and the second electric gate valve 204, and the other branch is connected to the outlet of the electric gate main valve 103. The first two branches are used for flushing the pipelines and pump bodies of the material conveying pumps 3 on the main pipeline 201 and the standby pipeline 202 with clean water when they are in standby state, and the other branch is used for flushing each pipeline and pump body when the material conveying is stopped. The branches of the flushing pipeline 6 are respectively connected with a check valve 601 and a manual ball valve 602, and the manual ball valve 602 is used to manually control the opening and closing of each branch, so that flushing is convenient after receiving water, and the check valve 601 is set to prevent the waste water from flowing back after flushing.

[0037] In this embodiment, the control station is provided with a host, a touch screen and a PLC module, wherein the PLC module is used to collect flow data of the delivery flow meter 501 and the reflux flow meter 701, the host is used to send instructions to each material delivery pump 3 and each valve, and can control the working frequency of the material delivery pump 3 and the opening and closing of each automatic valve, and the touch screen is used to display the collected data values ​​and various parameter setting values.

[0038] The working principle of the present invention is as follows:

[0039] 1. Material conveying process:

[0040] The viscous liquid material is stored in the viscous liquid storage tank 1. The first manual gate valve 102 and the electric gate main valve 103 at the bottom of the viscous liquid storage tank 1, and the first electric gate valve 203 are in an open state. The viscous material flows into the material delivery pump 3 through the main pipeline 201 and the three opened gate valves, and the material is delivered to the distribution pipeline 5 through the first electric gate valve 203, the first electric ball valve 207, the third electric ball valve 209 and the delivery flow meter 501. At this time, the second manual gate valve 205 is in a closed state, the second electric gate valve 204 and the second electric ball valve 2 are in a closed state, and the material delivery pump 3 on the standby pipeline 202 is not running. At this time, one of the two material delivery pumps 3 is running and the other is standby;

[0041] When the first electric gate valve 203 and the first electric ball valve 207 are closed, and the second electric gate valve 204 and the second electric ball valve 208 are opened, the material conveying pump 3 on the standby pipeline 202 is in an operable state, and the material conveying pump 3 on the main pipeline 201 is in a standby state.

[0042] 2. Stabilize the output flow process:

[0043] The delivery amount of the viscous liquid material in the distribution pipeline 5 is set to maintain a fixed ratio with other materials. When the amount of other materials changes, the information is collected and transmitted to the control station, and then fed back to the conveying device after data analysis;

[0044] The conveying device will make an indicator to increase or decrease the flow rate. If the signal is given to increase the flow rate, the motor operating frequency of the material conveying pump 3 will be increased to increase the output; if the signal is given to reduce the flow rate, the motor operating frequency of the material conveying pump 3 will gradually decrease to the minimum set value (the minimum set value cannot be too low, otherwise it will cause insufficient conveying pressure in the pipeline and affect the use of the end of the pipeline). When the output flow rate reaches the given indicator, the motor frequency reduction action stops and the frequency operation is locked until the control station issues an instruction again;

[0045] If the motor of the material conveying pump 3 drops to the lowest value of the set frequency and the output flow is still too large, the control station will issue a command, and the electric regulating valve 702 on the return pipeline 7 will gradually open to convey the excess flow in the conveying pipeline 2 to the storage tank through the return pipeline 7 until the output flow reaches the command value given by the system, and then the electric regulating valve 702 is locked;

[0046] When the reflux pipeline 7 is running, since the flow rate is constantly changing, the unevenness of the fluid in the pipeline will cause pipeline vibration, affecting the safe and stable operation of the reflux flow meter 701 and the electric regulating valve 702 on the pipeline. Therefore, a flange metal hose 703 is set at the front end of the pipeline to offset the vibration.

[0047] 3. Flushing process

[0048] Viscous liquid materials have a certain degree of viscosity. When the material stops being transported or the pump is running in reverse, the pipes and pumps need to be cleaned with clean water to avoid sticking to the pipes or pump body and affecting the next use.

[0049] When the material delivery pump 3 on the main pipeline 201 is stopped and the material delivery pump 3 on the standby pipeline 202 is running, the first electric gate valve 203 and the first electric ball valve 207 are closed, the manual ball valve 602 on the branch connecting the flushing pipeline 6 and the main pipeline 201 is opened, and the second manual gate valve 205 at the outlet of the material delivery pump 3 on the main pipeline 201 is opened, and clean water passes through the check valve 601 and the manual ball valve 602 on the branch to flush the main pipeline 201 and the material delivery pump 3 thereon, and the flushed water is discharged to the collection pool 4 through the second manual gate valve 205, and the water containing the material in the collection pool 4 is returned to the viscous material preparation system according to a certain ratio for recycling;

[0050] When the material delivery pump 3 on the standby pipeline 202 stops and the material delivery pump 3 on the main pipeline 201 is running, the second electric gate valve 204 and the second electric ball valve 208 are closed, the manual ball valve 602 on the branch of the flushing pipeline 6 connected to the standby pipeline 202 is opened, and the third manual gate valve 206 at the outlet of the material delivery pump 3 on the standby pipeline 202 is opened. Clean water flushes the standby pipeline 202 and the material delivery pump 3 thereon through the check valve 601 and the manual ball valve 602, and the flushed water is discharged to the collection pool 4 through the third manual gate valve 206, and the water containing the material in the collection pool 4 is returned to the viscous material preparation system according to a certain ratio for recycling.

[0051] When both material conveying pumps 3 are shut down, the first manual gate valve 102 and the electric gate main valve 103 are closed, and the first manual ball valve 207, the second manual ball valve 208, and the third manual ball valve 209 are opened to flush the conveying pipeline 2 and the two material conveying pumps 3 to prevent sticky materials from sticking to the pipeline and the pump body.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A viscous liquid material conveying device, characterized in that: include: Viscous liquid storage tanks, delivery pipelines, material delivery pumps, collection tanks, addition pipelines, flushing pipelines and return pipelines; The bottom outlet of the viscous liquid storage tank is connected to the distribution pipeline through a delivery pipeline and a material delivery pump, and the outlet of the material delivery pump is connected to the collection tank through a manual gate valve; One end of the flushing pipeline is connected to the factory flushing water pipe, and the other end is connected to the delivery pipeline, which is used to flush the delivery pipeline, and the waste water after flushing is passed into the collection tank; The inlet of the addition pipeline is connected to a delivery flow meter, the return pipeline is connected to a return flow meter, and the return pipeline is connected between the inlet of the delivery flow meter and the viscous liquid storage tank; The control station is used to receive flow data, analyze it, and then issue instructions to control the on and off of each pipeline.

2. The viscous liquid material conveying device according to claim 1, characterized in that: The bottom outlet of the viscous liquid storage tank is provided with a manual gate valve.

3. The viscous liquid material conveying device according to claim 1, characterized in that: The conveying pipeline includes a main pipeline and a backup pipeline. The main pipeline and the backup pipeline are respectively provided with a material conveying pump. The two material conveying pumps are one for use and one for backup, and can be switched remotely or locally.

4. The viscous liquid material conveying device according to claim 3, characterized in that: Electric gate valves are respectively arranged at the front ends of the inlets of the two material conveying pumps.

5. The viscous liquid material conveying device according to claim 4, characterized in that: The inlet of the main pipeline is also provided with an electric gate main valve, and the inlet of the standby pipeline is connected to the side of the electric gate main valve away from the viscous liquid storage tank.

6. The viscous liquid material conveying device according to claim 3, characterized in that: The outlet ends of the two material conveying pumps and the inlet of the distribution pipeline are respectively provided with electric ball valves.

7. The viscous liquid material conveying device according to claim 1, characterized in that: The inlet of the return pipeline is connected with a flange metal hose, and the return pipeline is connected with an electric regulating valve.

8. The viscous liquid material conveying device according to claim 5, characterized in that: The flushing pipeline is provided with three branches, and the three branches are respectively connected to the outlets of the two electric gate valves and the outlet of the electric gate main valve.

9. The viscous liquid material conveying device according to claim 8, characterized in that: Each branch of the flushing pipeline is respectively connected with a check valve and a manual ball valve.

10. The viscous liquid material conveying device according to claim 1, characterized in that: The control station is provided with a host, a touch screen and a PLC module, wherein the PLC module is used to collect data from the delivery flow meter and the reflux flow meter, the host is used to send instructions to the material delivery pump and each valve to control their operation, and the touch screen is used to display the collected data values ​​and various parameter setting values.

Images