Large-capacity small material mixing and filling equipment for SAP

Abstract

The utility model relates to the technical field of hydrophilic resin preparation, and discloses large-capacity small material mixing and filling equipment for SAP, which comprises a first small material tank, a second small material tank and a filling liquid outlet, and an outlet pipeline of the first small material tank is provided with a first metering pump, a first pressure stabilizing valve, a first pneumatic valve and a fifth pneumatic valve to the filling liquid outlet. According to the large-capacity small-material mixing and filling equipment for the SAP, a first pneumatic valve, a second pneumatic valve, a fourth pneumatic valve, a fifth pneumatic valve and a sixth pneumatic valve are arranged, a filling pipeline is designed to be in a circulating form, when the filling pneumatic valves are not opened, the filling pneumatic valves are in a circulating state all the time, liquid can be discharged in time during filling, the pump does not need to be started, and the working efficiency is improved. And meanwhile, instability of the filling amount when the one-way liquid supply pump is started and stopped is avoided, so that timely and stable discharging is guaranteed, and the problems of unstable filling, one-way liquid supply and non-uniform filling specifications caused by pump stopping and pump starting are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrophilic resin preparation, in particular to large-capacity small-material mixing and filling equipment for SAP. Background Art

[0002] Polymer water-absorbent resin (SAP) is a new type of functional polymer material that can absorb hundreds or even thousands of times its own weight of water, and has a good water retention capacity. It does not dehydrate or dehydrates very little under pressure. After the material absorbs water, its water absorption capacity can be restored after drying, and it can be used many times. In addition, SAP also has a three-dimensional spatial network structure, is insoluble in water and organic solvents, has the ability to absorb ammonia, urine, blood and organic drugs, and has good fertilizer and drug sustained release properties. Therefore, SAP has been widely used in agriculture, forestry, horticulture, physiology and hygiene, food, civil engineering, daily chemical industry, life health care, desert wasteland and coal mine fire prevention. SAP can be classified according to the source of raw materials: starch, fiber, and synthetic polymer.

[0003] In the production of SAP, quantitative filling before polymerization, the ratio of reaction liquid to small materials is particularly important, and the stability of filling affects the accuracy of the specifications of each bag of reaction liquid. At present, the SAP mixing and filling equipment used in the market has the following disadvantages:

[0004] 1. Unstable filling, one-way flow of liquid, stopping and starting the pump cause uneven filling specifications;

[0005] 2. The ratio of reaction liquid to small materials is difficult to control, which may easily lead to excessive or insufficient small materials;

[0006] 3. The feed pressure is unstable. The pressure is too high or too low, which causes the amount of reaction liquid and small materials added to be unstable, and the quality of each specification of reaction liquid is not uniform. Utility Model Content

[0007] The utility model aims to provide a large-capacity small-material mixed filling device for SAP, so as to solve the problems of unstable filling, one-way flow liquid supply, and uneven filling specifications caused by stopping and starting the pump in the above-mentioned background technology.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a large-capacity small-material mixed filling equipment for SAP, comprising a first small-material tank, a second small-material tank and a filling outlet, an outlet pipeline is arranged on the right side and the top of the first small-material tank, and the outlet pipeline of the first small-material tank is installed with a first metering pump, a first pressure-stabilizing valve, a first pneumatic valve and a fifth pneumatic valve to the filling outlet.

[0009] Preferably, an outlet pipeline is provided at the top and right side of the second small material tank, and the outlet pipeline of the first metering pump is installed with a second metering pump, a second pressure-stabilizing valve, a second pneumatic valve and a sixth pneumatic valve to the filling liquid outlet.

[0010] Preferably, a polymerization monomer reaction tank is arranged on the right side of the first small material tank, and outlet pipelines are arranged on the top and left side of the polymerization monomer reaction tank. The outlet pipeline of the polymerization monomer reaction tank is installed with a magnetic pump, a third pressure-stabilizing valve, a third pneumatic valve and a fourth pneumatic valve to the filling liquid outlet.

[0011] Preferably, the fourth pneumatic valve, the fifth pneumatic valve and the sixth pneumatic valve are in the same horizontal plane, and the fourth pneumatic valve, the fifth pneumatic valve and the sixth pneumatic valve are filling valves.

[0012] Preferably, the first pressure-stabilizing valve is installed at the outlet of the first metering pump, and the first metering pump can quantitatively supply liquid at a set flow rate.

[0013] Preferably, the first small material tank and the second small material tank are of the same size, and the first metering pump and the first pressure-stabilizing valve cooperate with each other.

[0014] Compared with the prior art, the utility model has the beneficial effects that: the large-capacity small-material mixed filling equipment for SAP not only ensures the stability of the material discharge, ensures the convenience of controlling the ratio of the reaction liquid and the small-material addition, but also ensures the stability of the system pressure;

[0015] (1) By providing the first pneumatic valve, the second pneumatic valve, the fourth pneumatic valve, the fifth pneumatic valve and the sixth pneumatic valve, the filling pipeline is designed to be in a circulation form. When the filling pneumatic valve is not opened, it is always in a circulation state. During filling, liquid can be discharged in time without waiting for the pump to be started. At the same time, the instability of the filling amount when the one-way liquid supply pump is started and stopped is also avoided, thereby ensuring timely and stable discharge of the material;

[0016] (2) The polymerization monomer reaction tank, the magnetic pump, the third pressure-stabilizing valve and the third pneumatic valve are provided. The polymerization monomer reaction tank adopts a large-flow magnetic pump for variable frequency constant-current liquid supply during transportation. The first small material tank and the second small material tank adopt a small-flow first metering pump and a second metering pump for constant-current liquid supply. Different forms of filling and delivery pumps are adopted to ensure the stability of large and small flow liquid supply. Each filling and delivery pump can adjust the flow rate, and can add the reaction liquid and small materials in a fixed proportion, so as to control the addition of small materials and prevent excessive or insufficient small materials.

[0017] (3) By providing a first metering pump, a second metering pump and a magnetic pump, the outlets of the first metering pump and the second metering pump are respectively provided with a first pressure-stabilizing valve and a second pressure-stabilizing valve, thereby ensuring that the system pressure is stable and avoiding instantaneous pressure instability when the discharge valve is opened, thereby avoiding deviation in the filling amount. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the process operation structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the structure of the process description of the utility model.

[0020] In the figure: 1. first small material tank; 2. first metering pump; 3. first pressure-stabilizing valve; 4. first pneumatic valve; 5. second small material tank; 6. second pneumatic valve; 7. second metering pump; 8. second pressure-stabilizing valve; 9. polymerization monomer reaction tank; 10. magnetic pump; 11. third pressure-stabilizing valve; 12. third pneumatic valve; 13. fourth pneumatic valve; 14. fifth pneumatic valve; 15. sixth pneumatic valve; 16. filling outlet. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example 1: Please refer to Figure 1-2 , a large-capacity small-material mixed filling equipment for SAP, comprising a first small-material tank 1, a second small-material tank 5 and a filling outlet 16, an outlet pipeline is arranged on the right side and the top of the first small-material tank 1, and the outlet pipeline of the first small-material tank 1 is installed with a first metering pump 2, a first pressure-stabilizing valve 3, a first pneumatic valve 4 and a fifth pneumatic valve 14 to the filling outlet 16;

[0023] The top and right side of the second small material tank 5 are provided with an outlet pipeline, and the outlet pipeline of the first metering pump 2 is installed with a second metering pump 7, a second pressure-stabilizing valve 8, a second pneumatic valve 6 and a sixth pneumatic valve 15 to a filling liquid outlet 16;

[0024] Specifically, Figure 1 and Figure 2 As shown, the filling pipeline is designed in a circulation form. When the filling pneumatic valve is not opened, it is always in a circulation state. The liquid can be discharged in time during filling without waiting for the pump to start. At the same time, it also avoids the instability of the filling volume when the one-way liquid supply pump is started and stopped, thereby ensuring timely and stable discharge.

[0025] Embodiment 2: A polymerization monomer reaction tank 9 is arranged on the right side of the first small material tank 1, and an outlet pipeline is arranged on the top and left side of the polymerization monomer reaction tank 9. The outlet pipeline of the polymerization monomer reaction tank 9 is installed with a magnetic pump 10, a third pressure-stabilizing valve 11, a third pneumatic valve 12 and a fourth pneumatic valve 13 to a filling liquid outlet 16, and the fourth pneumatic valve 13, the fifth pneumatic valve 14 and the sixth pneumatic valve 15 are at the same horizontal plane, and the fourth pneumatic valve 13, the fifth pneumatic valve 14 and the sixth pneumatic valve 15 are filling valves;

[0026] Specifically, Figure 1 and Figure 2 As shown, the polymerization monomer reaction tank 9 adopts a large-flow magnetic pump 10 for variable frequency constant-current liquid supply during transportation, and the first small material tank 1 and the second small material tank 5 adopt a small-flow first metering pump 2 and a second metering pump 7 for constant-current liquid supply. Different forms of filling and delivery pumps are used to ensure the stability of large and small flow liquid supply, and each filling and delivery pump can adjust the flow rate, and can add reaction liquid and small materials in a fixed proportion, so as to control the addition of small materials and prevent excessive or insufficient small materials.

[0027] Embodiment 3: The first pressure-stabilizing valve 3 is installed at the outlet of the first metering pump 2. The first metering pump 2 can quantitatively supply liquid according to the set flow rate. The first small material tank 1 and the second small material tank 5 are of the same size. The first metering pump 2 and the first pressure-stabilizing valve 3 cooperate with each other.

[0028] Specifically, Figure 1 and Figure 2 As shown, the outlets of the first metering pump 2 and the second metering pump 7 are respectively provided with the first pressure stabilizing valve 3 and the second pressure stabilizing valve 8, which can ensure the stability of the system pressure and avoid the instantaneous pressure instability when the discharge valve is opened, which causes the deviation of the filling amount.

[0029] Working principle: At the initial stage of system operation, the utility model sets relevant parameters through the PLC control system, the first metering pump 2 and the second metering pump 7 set the liquid supply flow rate, the magnetic pump 10 is set to the liquid supply frequency, the first pressure regulating valve 3 and the second pressure regulating valve 8 are adjusted to the set pressure, the reflux valve is opened before filling, and each tank body is self-circulated; when the filling meets the liquid inlet conditions, the reflux valve is closed and the filling valve is opened. The opening and closing time of the filling valve is set according to the filling specifications. The filling specifications can be adjusted by the pump flow and the opening and closing time of the filling valve to meet the large-capacity filling. The filling pipeline is designed in a circulating form. When the filling pneumatic valve is not opened, it is always in a circulating state. The liquid can be discharged in time during filling without waiting for the pump to be started. At the same time, the instability of the filling amount when the one-way liquid supply pump is started and stopped is avoided, thereby ensuring timely and stable discharge.

[0030] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A large-capacity small-material mixed filling device for SAP, comprising a first small-material tank (1), a second small-material tank (5) and a filling outlet (16), characterized in that: An outlet pipeline is arranged on the right side and the top of the first small material tank (1), and the outlet pipeline of the first small material tank (1) is installed with a first metering pump (2), a first pressure-stabilizing valve (3), a first pneumatic valve (4) and a fifth pneumatic valve (14) to a filling liquid outlet (16).

2. The large-capacity small-material mixing and filling equipment for SAP according to claim 1 is characterized in that: The top and right side of the second small material tank (5) are provided with an outlet pipeline, and the outlet pipeline of the first metering pump (2) is installed with a second metering pump (7), a second pressure-stabilizing valve (8), a second pneumatic valve (6) and a sixth pneumatic valve (15) to a filling liquid outlet (16).

3. The large-capacity small-material mixing and filling equipment for SAP according to claim 1 is characterized in that: A polymerization monomer reaction tank (9) is arranged on the right side of the first small material tank (1), and an outlet pipeline is arranged on the top and left side of the polymerization monomer reaction tank (9). The outlet pipeline of the polymerization monomer reaction tank (9) is installed with a magnetic pump (10), a third pressure-stabilizing valve (11), a third pneumatic valve (12) and a fourth pneumatic valve (13) to a filling liquid outlet (16).

4. The large-capacity small-material mixing and filling equipment for SAP according to claim 3 is characterized in that: The fourth pneumatic valve (13), the fifth pneumatic valve (14) and the sixth pneumatic valve (15) are located at the same horizontal plane, and the fourth pneumatic valve (13), the fifth pneumatic valve (14) and the sixth pneumatic valve (15) are filling valves.

5. The large-capacity small-material mixing and filling equipment for SAP according to claim 1 is characterized in that: The first pressure-stabilizing valve (3) is installed at the outlet of the first metering pump (2), and the first metering pump (2) can quantitatively supply liquid according to a set flow rate.

6. The large-capacity small-material mixing and filling equipment for SAP according to claim 1 is characterized in that: The first small material tank (1) and the second small material tank (5) are of the same size, and the first metering pump (2) and the first pressure-stabilizing valve (3) cooperate with each other.

Images