Automatic adding system for paste resin recovery auxiliary agent

Abstract

The utility model discloses an automatic adding system for a paste resin recovery auxiliary agent, which relates to the technical field of paste resin production equipment and comprises a recovery auxiliary agent tank, an auxiliary agent pump, a charging valve, a flow meter and a DCS (Distributed Control System), an outlet of the assistant recycling tank is communicated with an inlet of the assistant pump, an outlet of the assistant pump is communicated with an inlet of the assistant tank through a charging pipeline, and a charging valve and a flow meter are mounted on the charging pipeline; and the flow meter, the charging valve and the auxiliary pump are electrically connected with the DCS control system respectively. The device has the advantages that the manual subpackaging operation process is replaced by the conveying of the corresponding auxiliary pump and the precise metering of the flowmeter, and meanwhile, the independent DCS is adopted to control the start and stop of the corresponding valve and the auxiliary pump, so that the polymerization production period of the original production device is not influenced, and the continuous and stable operation of the production system can be ensured; and moreover, the labor intensity of workers and potential safety hazards caused by uncertain factors of manual operation are effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to paste resin production equipment technical field, especially relate to a paste resin recovery aid automatic adding system. BACKGROUND

[0002] Paste resin recovery aid is a kind of chemical additive for improving paste resin recovery efficiency, including defoaming agent, viscosity reducer, stabilizer etc.;Before the adding operation of existing recovery aid, according to daily production usage, recovery aid is divided into plastic pail by manual by hand pump by artificial from ton barrel in advance, and the weight of recovery aid is weighed using electronic scale, to ensure that recovery aid addition amount is consistent with production formula requirement.

[0003] The aid tank of field production equipment is above polymerization kettle, and during the adding of recovery aid, field operator needs to carry the divided recovery aid to 2.5 meters high iron platform, one pail each time, needs to carry multiple times, and the labor intensity is big, and there is the risk of falling and injury.

[0004] In addition, during the process of manually adding recovery aid into aid tank, polymerization kettle is in polymerization reaction process, and the manual pressure relief valve of aid tank needs to be opened first, and when the field pressure gauge shows 0, recovery aid is added into aid tank through feeding hopper;The pressure in polymerization kettle is between 0.55-0.65 MPa, which is much higher than the pressure in aid tank, if the operator forgets to close the pressure relief valve during the operation process, when recovery aid is added into polymerization kettle, aid tank is connected with polymerization kettle, and the pressure in polymerization kettle is balanced with the pressure in aid tank, the gas pressure from polymerization kettle into aid tank can make the aid in aid tank spray from feeding hopper, and the gaseous chloroethylene at the top of polymerization kettle is also carried out, so there is the risk of accident. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a paste resin recovery aid automatic adding system that can avoid the risk of safety accident caused by manual operation.

[0006] The utility model discloses a paste resin recovery auxiliary agent automatic adding system, which comprises an auxiliary agent tank, a pressure relief valve is installed at the pressure relief port of the top of the auxiliary agent tank, a balance valve I is installed on the pipeline that is communicated between the top of the auxiliary agent tank and a polymerizer, a feeding valve II and a feeding valve III are installed on the pipeline that is communicated between the bottom of the auxiliary agent tank and the polymerizer, and a feeding valve X is installed at the top feeding port of the auxiliary agent tank.

[0007] Further, the recovery auxiliary agent tank comprises a viscosity reducer tank, the auxiliary agent pump comprises a viscosity reducer pump, the feeding pipeline comprises a viscosity reducer pipeline, the feeding valve comprises a feeding valve VI and a feeding valve IX, and the flowmeter comprises a flowmeter II; the bottom outlet of the viscosity reducer tank is communicated with the inlet of the viscosity reducer pump, the outlet of the viscosity reducer pump is connected with the viscosity reducer pipeline, the outlet of the viscosity reducer pipeline is connected with the inlet of the feeding valve X, the feeding valve VI and the feeding valve IX are installed on the viscosity reducer pipeline, and the flowmeter II is installed on the viscosity reducer pipeline between the feeding valve VI and the feeding valve IX.

[0008] Further, the recovery auxiliary agent tank further comprises a stabilizer tank, the auxiliary agent pump further comprises a stabilizer pump, the feeding pipeline further comprises a stabilizer pipeline, the feeding valve further comprises a feeding valve VII, and the flowmeter further comprises a flowmeter III; the outlet of the stabilizer tank is communicated with the inlet of the stabilizer pump, the outlet of the stabilizer pump is connected with the stabilizer pipeline, the outlet of the stabilizer pipeline is communicated with the viscosity reducer pipeline at the outlet of the feeding valve VI, and the feeding valve VII and the flowmeter III are installed on the stabilizer pipeline.

[0009] Further, the stabilizer pipeline is communicated with a pure water pipeline I, and a water feeding valve I is installed on the pure water pipeline I.

[0010] Further, the recovery aid tank further comprises a defoaming agent tank I, a defoaming agent tank II, the aid pump further comprises a defoaming agent pump I, a defoaming agent pump II, the feeding pipeline further comprises a defoaming agent main pipeline, a defoaming agent pipeline I, a defoaming agent pipeline II, the feeding valve further comprises a feeding valve IV, a feeding valve V, a feeding valve VIII, the flow meter further comprises a flow meter I; the outlet of the defoaming agent tank I is communicated with the inlet of the defoaming agent pump I, the outlet of the defoaming agent pump I is communicated with the inlet of the defoaming agent pipeline I, and the feeding valve IV is installed on the defoaming agent pipeline I; the outlet of the defoaming agent tank II is communicated with the inlet of the defoaming agent pump II, the outlet of the defoaming agent pump II is communicated with the inlet of the defoaming agent pipeline II, and the feeding valve V is installed on the defoaming agent pipeline II; the outlet of the defoaming agent pipeline I is communicated with the outlet of the defoaming agent pipeline II, and then communicated with the inlet of the defoaming agent main pipeline, the outlet of the defoaming agent main pipeline is communicated with the inlet of the feeding valve X, and the feeding valve VIII and the flow meter I are installed on the defoaming agent main pipeline.

[0011] Further, the defoaming agent main pipeline is communicated with a pure water pipeline II, and the pure water pipeline II is provided with a water adding valve II.

[0012] The utility model discloses the advantages are as follows: the utility model discloses corresponding pump's delivery and the accurate measurement of combining flowmeter, replace manual partial shipment operation process, adopt independent DCS control system control corresponding valve and pump's start -stop simultaneously, do not influence original production device polymerization production cycle, can guarantee production system continuous steady operation, and moreover effectively reduce the manual labor intensity and the security hidden danger of human operation uncertain factor. BRIEF DESCRIPTION OF DRAWINGS

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

[0014] The marks of components in the drawings are as follows: polymerizer 1, aid tank 2, pressure relief valve 3, balance valve I 4, feeding valve II 5, feeding valve III 6, feeding valve X 7, viscosity reducer tank 8, viscosity reducer pump 9, viscosity reducer pipeline 10, feeding valve VI 11, feeding valve IX 12, flow meter II 13, stabilizer tank 14, stabilizer pump 15, stabilizer pipeline 16, feeding valve VII 17, flow meter III 18, pure water pipeline I 19, water adding valve I 20, defoaming agent tank I 21, defoaming agent tank II 22, defoaming agent pump I 23, defoaming agent pump II 24, defoaming agent main pipeline 25, defoaming agent pipeline I 26, defoaming agent pipeline II 27, feeding valve IV 28, feeding valve V 29, feeding valve VIII 30, flow meter I 31, pure water pipeline II 32, water adding valve II 33. DETAILED DESCRIPTION

[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] like Figure 1 As shown, this embodiment provides an automatic addition system for recycled resin additives, which includes an additive tank 2. A pressure relief valve 3 is installed at the pressure relief port on the top of the additive tank 2. A balancing valve I4 is installed on the pipeline connecting the top of the additive tank 2 to the polymerization reactor 1. Opening the balancing valve I4 is used to balance the pressure in the polymerization reactor 1 and the additive tank 2, so that the additive in the additive tank 2 can flow into the polymerization reactor 1. A feeding valve II5 and a feeding valve III6 are installed on the pipeline connecting the bottom of the additive tank 2 to the polymerization reactor 1. A feeding valve X7 is installed at the feed inlet on the top of the additive tank 2. Pressure sensors (existing technology, not shown in the figure) are installed in both the polymerization reactor 1 and the additive tank 2 to transmit the real-time monitored pressure signal to the DCS control system. When the two detected pressure values ​​are balanced, it can be confirmed that the recycled additive has started to be added to the additive tank 2. In this embodiment, the DCS control system is a Yokogawa CENTUM VP control system.

[0017] It also includes a recovery agent tank, an agent pump, a feeding valve, a flow meter, and a DCS control system. The outlet of the recovery agent tank is connected to the inlet of the agent pump, and the outlet of the agent pump is connected to the inlet of the agent tank 2 via a feeding pipeline. A feeding valve and a flow meter are installed on the feeding pipeline. The flow meter, feeding valve, and agent pump are electrically connected to the DCS control system. A weighing sensor (existing technology, not shown in the attached diagram) is equipped on the recovery agent tank to achieve accurate weighing. To ensure the accuracy of the amount of recovered agent added and thus guarantee product quality, a mass flow meter is selected. Its detection signal is transmitted to the DCS control system in real time. The DCS control system controls the start and stop of the agent pump and the opening and closing of the feeding valve to achieve automatic and accurate feeding, reducing manual labor intensity and safety hazards.

[0018] Based on the material properties of the recycled additives, the viscosity of the material increases as the ambient temperature decreases. Therefore, a jacket is installed on the outer wall of the recycled additive tank to keep it warm using circulating hot water. The feeding pipeline is also insulated with circulating hot water through a sleeve to ensure that the recycled additives are transported at a constant temperature and with stable viscosity.

[0019] The recovery aid tank comprises a viscosity reducer tank 8, the aid pump comprises a viscosity reducer pump 9, the viscosity reducer is a polyoxyethylene ether substance, and the viscosity reducer pump 9 is selected as a screw pump. The feeding pipeline comprises a viscosity reducer pipeline 10, the feeding valve comprises feeding valves VI 11 and IX 12, and the flowmeter comprises a flowmeter II 13. The bottom outlet of the viscosity reducer tank 8 is communicated with the inlet of the viscosity reducer pump 9, the outlet of the viscosity reducer pump 9 is connected with the viscosity reducer pipeline 10, the outlet of the viscosity reducer pipeline 10 is connected with the inlet of the feeding valve X 7, the feeding valves VI 11 and IX 12 are installed on the viscosity reducer pipeline 10, and the flowmeter II 13 is installed on the viscosity reducer pipeline 10 between the feeding valves VI 11 and IX 12. The viscosity reducer pipeline 10 is communicated with the pure water pipeline I 19, the water feeding valve I 20 is installed on the pure water pipeline I 19, water is fed into the pure water pipeline I 19 to wash the viscosity reducer pipeline 10, the residual viscosity reducer in the viscosity reducer pipeline 10 is ensured to be fed into the polymerizer 1, the accuracy of the feeding amount is ensured, and the washing amount is controlled to be 1-5 kg.

[0020] The working process of automatically adding the viscosity reducer is as follows: the viscosity reducer needs to be added according to the process requirement, the pressure in the polymerizer 1 is less than 0.15 MPa, the valves on the viscosity reducer pipeline 10 are not alarmed and are in the closed state, and the viscosity reducer pump 9 is in the shutdown state. When the DCS control system controls the pressure relief valve 3 to be opened, the pressure in the aid tank 2 reaches the lower limit set value of the pressure in the polymerizer 1, the DCS control system controls the feeding valves VI 11, IX 12 and X 7 to be opened, and the viscosity reducer pump 9 is started, and the flowmeter II 13 starts to measure. When the amount measured by the flowmeter II 13 reaches the set value required by the formula, the DCS control system controls the viscosity reducer pump 9 to be shut down, the feeding valve VI 11 is closed, the water feeding valve I 20 is opened, and the DCS control system controls the feeding valves IX 12 and X 7, the pressure relief valve 3 and the water feeding valve I 20 to be closed after the water amount measured by the flowmeter II 13 reaches the set value. Then the balance valve I 4, the feeding valve II 5 and the feeding valve III 6 are automatically opened, the viscosity reducer is completely added into the polymerizer 1, and the balance valve I 4, the feeding valve II 5 and the feeding valve III 6 are automatically closed after 5 minutes.

[0021] The recovery aid tank further comprises a stabilizer tank 14, the aid pump further comprises a stabilizer pump 15, the feeding pipeline further comprises a stabilizer pipeline 16, the feeding valve further comprises a feeding valve VII 17, and the flowmeter further comprises a flowmeter III 18. The outlet of the stabilizer tank 14 is communicated with the inlet of the stabilizer pump 15, the outlet of the stabilizer pump 15 is connected with the stabilizer pipeline 16, the stabilizer pipeline 16 is communicated with the viscosity reducer pipeline 10 at the outlet of the feeding valve VI 11, the feeding valve VII 17 and the flowmeter III 18 are installed on the stabilizer pipeline 16. The automatic adding process of the stabilizer is similar to the working process of automatically adding the viscosity reducer, and the difference is that the opening and closing of the corresponding feeding valve VII 17, the feeding valve IX 12, the feeding valve X 7 and the stabilizer pump 15 are controlled, and the stabilizer is measured by the flowmeter III 18. The specific process is not described herein.

[0022] The recovery aid tank further comprises a defoaming agent tank I 21, a defoaming agent tank II 22, the aid pump further comprises a defoaming agent pump I 23, a defoaming agent pump II 24, the feeding pipeline further comprises a defoaming agent main pipeline 25, a defoaming agent pipeline I 26, a defoaming agent pipeline II 27, the feeding valve further comprises a feeding valve IV 28, a feeding valve V 29, a feeding valve VIII 30, and the flow meter further comprises a flow meter I 31; the outlet of the defoaming agent tank I 21 is communicated with the inlet of the defoaming agent pump I 23, the outlet of the defoaming agent pump I 23 is communicated with the inlet of the defoaming agent pipeline I 26, and the defoaming agent pipeline I 26 is provided with the feeding valve IV 28; the outlet of the defoaming agent tank II 22 is communicated with the inlet of the defoaming agent pump II 24, the outlet of the defoaming agent pump II 24 is communicated with the inlet of the defoaming agent pipeline II 27, and the defoaming agent pipeline II 27 is provided with the feeding valve V 29; the outlets of the defoaming agent pipeline I 26 and the defoaming agent pipeline II 27 are communicated with the inlet of the defoaming agent main pipeline 25 after being merged, the outlet of the defoaming agent main pipeline 25 is communicated with the inlet of the feeding valve X 7, and the defoaming agent main pipeline 25 is provided with the feeding valve VIII 30 and the flow meter I 31; the defoaming agent main pipeline 25 is communicated with a pure water pipeline II 32, and the pure water pipeline II 32 is provided with a water feeding valve II 33, so that the defoaming agent in the pipeline can be washed into the polymerization kettle 1 by using pure water.

[0023] The utility model discloses two defoaming agent tanks, mainly solve the need of adding different defoaming agent for producing different products, according to the formula selection, the volume of defoaming agent tank I 21, defoaming agent tank II 22 and viscosity reducer tank 8 are two cubic meters, can be equipped with 1600 kilograms aid respectively, make aid one day one distribution change one week one distribution, greatly alleviate the staff workload, save labor, also need not manual sub -packaging to the plastic bucket, because defoaming agent is organic silicon oil class material, viscosity reducer is polyoxyethylene ether class material, solidify easily under low temperature environment, therefore, install agitator in defoaming agent tank I 21, defoaming agent tank II 22 and viscosity reducer tank 8, set stirring fixed time start, defoaming agent pump I 23, defoaming agent pump II 24 select metering pump.

[0024] The work flow of automatically adding defoaming agent: when the corresponding defoaming agent needs to be added according to the process requirements, and the feeding valve IV 28, the feeding valve V 29 and the feeding valve VIII 30 have no alarm and are in the closed state, and the defoaming agent pump I 23 and the defoaming agent pump II 24 are in the shutdown state, the DCS control system controls the pressure relief valve 3 to be opened, the pressure in the auxiliary agent tank 2 reaches the lower limit set value of the pressure of the polymerizer 1, the DCS control system controls the feeding valve IV 28 / feeding valve V 29, the feeding valve VIII 30, the feeding valve X 7 to be opened, the defoaming agent pump I 23 / defoaming agent pump II 24 is started, and the flowmeter I 31 starts to measure; when the amount measured by the flowmeter I 31 reaches the set value required by the formula, the DCS control system controls the defoaming agent pump I 23 / defoaming agent pump II 24 to be shut down, and the feeding valve IV 28 / feeding valve V 29 to be closed; then the water feeding valve II 33 is controlled to be opened, and when the flowmeter I 31 measures the water injection amount, the DCS control system controls the water feeding valve II 33, the pressure relief valve 3, the feeding valve VIII 30 and the feeding valve X 7 to be closed; the DCS control system controls the balance valve I 4, the feeding valve II 5 and the feeding valve III 6 to be opened, and the defoaming agent is completely added into the polymerizer 1, and after 5 minutes, the balance valve I 4, the feeding valve II 5 and the feeding valve III 6 are automatically closed.

[0025] The utility model discloses a corresponding pump's delivery and the accurate measurement of combining flowmeter, replace manual partial operation process, adopt independent DCS control system to control the start and stop of corresponding valve and pump simultaneously, do not influence the original production device polymerization production cycle, can guarantee the continuous and stable operation of production system, and effectively reduce the manual labor intensity and the security hidden danger of human operation uncertain factor.

[0026] The above only is the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A paste resin recycling aid automatic adding system, comprising an aid tank, a pressure relief valve installed at the top pressure relief port of the aid tank, a balance valve I installed on the pipeline communicating the top of the aid tank with a polymerizer, a feeding valve II and a feeding valve III installed on the pipeline communicating the bottom of the aid tank with the polymerizer, and a feeding valve X installed at the top feeding port of the aid tank. characterized in that It also comprises a recycling aid tank, an aid pump, a feeding valve, a flow meter and a DCS control system; the outlet of the recycling aid tank communicates with the inlet of the aid pump, the outlet of the aid pump communicates with the inlet of the aid tank through a feeding pipeline, a feeding valve and a flow meter are installed on the feeding pipeline; the flow meter, the feeding valve and the aid pump are electrically connected with the DCS control system respectively.

2. The paste resin recycling aid automatic adding system according to claim 1, characterized in that, The recycling aid tank comprises a viscosity reducer tank, the aid pump comprises a viscosity reducer pump, the feeding pipeline comprises a viscosity reducer pipeline, the feeding valve comprises a feeding valve VI and a feeding valve IX, and the flow meter comprises a flow meter II; the bottom outlet of the viscosity reducer tank communicates with the inlet of the viscosity reducer pump, the outlet of the viscosity reducer pump is connected with the viscosity reducer pipeline, the outlet of the viscosity reducer pipeline is connected with the inlet of the feeding valve X, the feeding valve VI and the feeding valve IX are installed on the viscosity reducer pipeline, and the flow meter II is installed on the viscosity reducer pipeline between the feeding valve VI and the feeding valve IX.

3. The paste resin recovery aid automatic addition system according to claim 2, characterized by, The recycling aid tank further comprises a stabilizer tank, the aid pump further comprises a stabilizer pump, the feeding pipeline further comprises a stabilizer pipeline, the feeding valve further comprises a feeding valve VII, and the flow meter further comprises a flow meter III; the outlet of the stabilizer tank communicates with the inlet of the stabilizer pump, the outlet of the stabilizer pump is connected with the stabilizer pipeline, the outlet of the stabilizer pipeline communicates with the viscosity reducer pipeline at the outlet of the feeding valve VI, and the feeding valve VII and the flow meter III are installed on the stabilizer pipeline.

4. The paste resin recovery aid automatic addition system according to claim 3, characterized by, A pure water pipeline I is communicated with the stabilizer pipeline, and a water feeding valve I is installed on the pure water pipeline I.

5. The automatic paste recycling aid dosing system according to any one of claims 1 to 4, characterized in that, The recycling aid tank further comprises a defoaming agent tank I and a defoaming agent tank II, the aid pump further comprises a defoaming agent pump I and a defoaming agent pump II, the feeding pipeline further comprises a defoaming agent main pipeline, a defoaming agent pipeline I and a defoaming agent pipeline II, the feeding valve further comprises a feeding valve IV, a feeding valve V and a feeding valve VIII, and the flow meter further comprises a flow meter I; the outlet of the defoaming agent tank I communicates with the inlet of the defoaming agent pump I, the outlet of the defoaming agent pump I communicates with the inlet of the defoaming agent pipeline I, and the feeding valve IV is installed on the defoaming agent pipeline I; the outlet of the defoaming agent tank II communicates with the inlet of the defoaming agent pump II, the outlet of the defoaming agent pump II communicates with the inlet of the defoaming agent pipeline II, and the feeding valve V is installed on the defoaming agent pipeline II; the outlet of the defoaming agent pipeline I and the outlet of the defoaming agent pipeline II are merged and then communicate with the inlet of the defoaming agent main pipeline, the outlet of the defoaming agent main pipeline communicates with the inlet of the feeding valve X, and the feeding valve VIII and the flow meter I are installed on the defoaming agent main pipeline.

6. The paste resin recycling aid automatic addition system according to claim 5, characterized by, A pure water pipeline II is communicated with the defoaming agent main pipeline, and a water feeding valve II is installed on the pure water pipeline II.

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