Quantitative weighing device for polyurethane production

Abstract

The utility model provides a quantitative weighing device for polyurethane production, which comprises a raw material barrel, and the bottom of the raw material barrel is fixedly connected with a connecting pipe. Firstly, the device is installed at a proper position, the raw material barrel is filled with sufficient raw materials, the auger is driven by the transmission motor to rotate, the raw materials in the raw material barrel can be output from the discharging pipe, and finally the raw materials enter the funnel; the weight sensor converts the gravity acting force of an object into an electric signal, so that the electromagnetic valve is opened and the transmission motor is closed at the same time, the raw materials cannot be continuously conveyed from the conveying pipe, meanwhile, the electromagnetic valve drives the sealing plate to rotate after being opened, the raw materials in the funnel flow out of the discharging pipe, and therefore the purpose of quantitative weighing is achieved. The stirring rod is driven by the stirring motor to rotate, so that the stirring rod can fully stir the raw materials in the raw material barrel, and the uniformity of the raw materials in the conveying process can be realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of polyurethane production, in particular to a quantitative weighing device for polyurethane production. Background Art

[0002] The full name of polyurethane is polyurethane, a high molecular compound. Polyurethane is divided into two categories: polyester type and polyether type. They can be made into polyurethane plastics (mainly foam plastics), polyurethane fibers (called spandex in China), polyurethane rubber and elastomers.

[0003] Publication No. CN112108090B discloses a polyurethane production apparatus comprising a mixing and stirring kettle, a feeding device, a prepolymer tubular reactor, a heating reactor, a nitrogen charging device, a high-viscosity pump, and a finished product tank. The mixing and stirring kettle, feeding device, prepolymer tubular reactor, heating reactor, and finished product tank are sequentially connected via pipelines. A high-viscosity pump is installed on the pipelines between the prepolymer tubular reactor and the heating reactor, and on the pipelines between the heating reactor and the finished product tank. The heating reactor is connected to the nitrogen charging device. The polyurethane production equipment of the present invention has a relatively simple overall structure and is easy to use, realizing continuous production of polyurethane. It is a small or medium-sized continuous production equipment that can well combine mixing, feeding, prepolymerization, polymerization, discharging and storage; it can well meet the requirements of polyurethane production and effectively ensure the quality of the produced polyurethane; however, the above-mentioned polyurethane production equipment does not have a quantitative weighing structure when it is installed, so that quantitative addition cannot be performed according to demand when feeding, and its practicality and functionality are poor. Therefore, it is necessary to provide a new quantitative weighing device for polyurethane production to solve the above-mentioned problems. Utility Model Content

[0004] The technical content of the utility model is to provide a new quantitative weighing device for polyurethane production.

[0005] In order to solve the above problems, the utility model provides a quantitative weighing device for polyurethane production, comprising: a raw material barrel, a connecting pipe fixedly connected to the bottom of the connecting pipe, and a feeding pipe fixedly connected to the bottom of the feeding pipe; a quantitative component, the quantitative component including a fixed rod, the fixed rod fixedly connected to the bottom of the feeding pipe, firstly, the device is installed in a suitable position, the interior of the raw material barrel is filled with a sufficient amount of raw material, the auger is driven to rotate by a transmission motor, so that the raw material inside the raw material barrel can be discharged from the discharge pipe, and finally the raw material enters the interior of the funnel, when the raw material enters the interior of the funnel and reaches the rated weight, the weight sensor converts the gravity force of the object into an electrical signal, so that the solenoid valve is opened and the transmission motor is closed at the same time, so that the raw material will not continue to be transported from the feeding pipe, and at the same time, the solenoid valve drives the sealing plate to rotate after opening, so that the raw material inside the funnel flows out from the discharge pipe, thereby completing the purpose of quantitative weighing, during the raw material conveying process, the stirring rod is driven to rotate by the stirring motor, so that the stirring rod can fully stir the raw material inside the raw material barrel, and the uniformity of the raw material conveying process can be achieved.

[0006] As a further solution of the present invention, the quantitative component also includes a discharge pipe, the top of the discharge pipe is fixedly connected to a funnel, the inside of the discharge pipe is rotatably connected to a sealing plate, and the feed pipe can transport the raw materials inside the raw material barrel to the inside of the funnel. When the rated weight is reached, the sealing plate rotates to allow the raw materials inside the funnel to flow out of the discharge pipe.

[0007] As a further solution of the present invention, a cavity is opened inside the sealing plate, and a weight sensor is fixedly connected inside the cavity. The weight sensor converts the gravity force of the object into an electrical signal and can simultaneously detect the weight of the current raw material inside the funnel.

[0008] As a further solution of the present invention, a solenoid valve is provided on the outside of the discharge pipe. After the solenoid valve receives the signal from the weight sensor, the solenoid valve drives the sealing plate to rotate ninety degrees inside the discharge pipe to discharge a certain amount of raw materials inside the funnel from the discharge pipe.

[0009] As a further solution of the present invention, a transmission motor is fixedly connected to the outside of the feed pipe, and one end of the output shaft of the transmission motor is fixedly connected to an auger, and the auger extends to the interior of the feed pipe. The transmission motor can drive the auger to rotate, and synchronously allow the raw materials from the raw material barrel to enter the feed pipe and be further transported to the interior of the funnel. The operating states of the transmission motor and the solenoid valve are opposite, and the operating state will change when the signal of the weight sensor is received synchronously.

[0010] As a further solution of the present invention, a feed port is fixedly connected to the outside of the raw material barrel, and a cover plate is rotatably connected to the top of the feed port. The feed port can facilitate the addition of raw materials into the interior of the raw material barrel.

[0011] As a further solution of the present invention, the center position of the funnel coincides with the discharge end of the discharge pipe, and the discharge pipe allows the raw materials to smoothly enter the interior of the funnel during transportation.

[0012] As a further solution of the present invention, a stirring motor is fixedly connected to the top of the raw material barrel, and one end of the output shaft of the stirring motor is fixedly connected to a stirring rod, which extends to the interior of the raw material barrel. The stirring motor can drive the stirring rod to fully stir the raw materials inside the raw material barrel.

[0013] In summary, the present invention has at least one of the following beneficial technical effects:

[0014] First, the utility model records a quantitative weighing device for polyurethane production, which records that the device is first installed in a suitable position, the interior of the raw material barrel is filled with a sufficient amount of raw materials, and the auger is driven by a transmission motor to rotate, so that the raw materials inside the raw material barrel can be discharged from the discharge pipe, and finally the raw materials enter the interior of the funnel. When the raw materials enter the interior of the funnel and reach the rated weight, the weight sensor converts the gravity force of the object into an electrical signal, so that the solenoid valve opens and the transmission motor closes at the same time, so that the raw materials will not continue to be transported from the feed pipe. At the same time, after the solenoid valve opens, it drives the sealing plate to rotate, so that the raw materials inside the funnel flow out from the discharge pipe, thereby completing the purpose of quantitative weighing.

[0015] Second, the utility model records a quantitative weighing device for polyurethane production, which records that during the raw material transportation process, the stirring motor drives the stirring rod to rotate, so that the stirring rod can fully stir the raw materials inside the raw material barrel, thereby achieving uniformity in the raw material transportation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the external structure of a quantitative weighing device for polyurethane production according to the utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of a raw material barrel of a quantitative weighing device for polyurethane production according to the utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of the feed pipe cross section of a quantitative weighing device for polyurethane production according to the present invention;

[0020] Figure 4 The utility model is a schematic diagram of the internal structure of the discharge pipe and sealing plate of a quantitative weighing device for polyurethane production.

[0021] Figure numerals: 1. Raw material barrel; 2. Connecting pipe; 3. Feed pipe; 4. Fixed rod; 5. Discharge pipe; 6. Funnel; 7. Stirring motor; 8. Stirring rod; 9. Feed port; 10. Transmission motor; 11. Auger; 12. Solenoid valve; 13. Sealing plate; 14. Cavity; 15. Weight sensor. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the present invention to clearly and completely describe the technical solution of the present invention. In addition, the forms of the various structures described in the following embodiments are merely examples. The instrument placement rack involved in the present invention is not limited to the various structures described in the following embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0023] A quantitative weighing device for polyurethane production comprises: a raw material barrel 1, a connecting pipe 2 fixedly connected to the bottom of the raw material barrel 1, and a feed pipe 3 fixedly connected to the bottom of the connecting pipe 2; a quantitative assembly, the quantitative assembly comprising a fixing rod 4, and the fixing rod 4 fixedly connected to the bottom of the feed pipe 3; first, the device is installed in a suitable position, the raw material barrel 1 is filled with a sufficient amount of raw material, and a transmission motor 10 drives an auger 11 to rotate, so that the raw material inside the raw material barrel 1 can be discharged from a discharge pipe 5, and finally the raw material enters the interior of a funnel 6. When the raw material enters the interior of the funnel 6 and reaches a rated weight, a weight sensor 15 converts the gravitational force of the object into an electrical signal, so that the electromagnetic valve 12 is opened and the transmission motor 10 is closed, so that the raw material does not continue to be fed from the feed pipe 3. At the same time, the opening of the electromagnetic valve 12 drives the sealing plate 13 to rotate, so that the raw material inside the funnel 6 flows out of the discharge pipe 5, thereby achieving the purpose of quantitative weighing. During the raw material conveying process, the stirring motor 7 drives the stirring rod 8 to rotate, so that the stirring rod 8 can fully stir the raw material inside the raw material barrel 1, and thus achieve uniformity during the raw material conveying process.

[0024] The quantitative assembly also includes a discharge pipe 5, the top of which is fixedly connected to a funnel 6. A sealing plate 13 is rotatably connected to the inside of the discharge pipe 5. The feed pipe 3 can transport the raw material inside the raw material barrel 1 to the inside of the funnel 6. When the rated weight is reached, the sealing plate 13 rotates to allow the raw material inside the funnel 6 to flow out of the discharge pipe 5.

[0025] Example 1

[0026] Please refer to Figure 1-4 ,This embodiment proposes;

[0027] A cavity 14 is provided inside the sealing plate 13, and a weight sensor 15 is fixedly connected to the inside of the cavity 14. The weight sensor 15 converts the gravitational force of the object into an electrical signal, and can simultaneously detect the weight of the current raw material inside the funnel 6. A solenoid valve 12 is provided on the outside of the discharge pipe 5. After the solenoid valve 12 receives the signal from the weight sensor 15, the solenoid valve 12 drives the sealing plate 13 to rotate ninety degrees inside the discharge pipe 5, so as to discharge a certain amount of raw materials inside the funnel 6 from the discharge pipe 5.

[0028] Example 2

[0029] like Figure 2 As shown, based on the same concept as the above embodiment, this embodiment further proposes:

[0030] The outside of the feeding pipe 3 is fixedly connected to a transmission motor 10, and one end of the output shaft of the transmission motor 10 is fixedly connected to an auger 11. The auger 11 extends into the interior of the feeding pipe 3. The transmission motor 10 can drive the auger 11 to rotate, and synchronously allow the raw material barrel 1 to enter the feeding pipe 3 and be further transported to the interior of the funnel 6. The operating states of the transmission motor 10 and the solenoid valve 12 are opposite. When the signal of the weight sensor 15 is received synchronously, the operating state will change.

[0031] The outside of the raw material barrel 1 is fixedly connected to a feed port 9, and the top of the feed port 9 is rotatably connected to a cover plate. The feed port 9 can facilitate the addition of raw materials into the interior of the raw material barrel 1. The center position of the funnel 6 coincides with the discharge end of the discharge pipe 5. The discharge pipe 5 allows the raw materials to enter the interior of the funnel 6 smoothly when being transported;

[0032] A stirring motor 7 is fixedly connected to the top of the raw material barrel 1, and one end of the output shaft of the stirring motor 7 is fixedly connected to a stirring rod 8, which extends into the interior of the raw material barrel 1. The stirring motor 7 can drive the stirring rod 8 to fully stir the raw materials inside the raw material barrel 1.

[0033] Working principle: First, install the device in a suitable position, fill the raw material barrel 1 with a sufficient amount of raw material, and use the transmission motor 10 to drive the auger 11 to rotate, so that the raw material inside the raw material barrel 1 can be discharged from the discharge pipe 5, and finally the raw material enters the funnel 6. When the raw material enters the funnel 6 and reaches the rated weight, the weight sensor 15 converts the gravity force of the object into an electrical signal, so that the solenoid valve 12 opens and the transmission motor 10 closes, so that the raw material will not continue to be transported from the feed pipe 3. At the same time, after the solenoid valve 12 is opened, it drives the sealing plate 13 to rotate, so that the raw material inside the funnel 6 flows out from the discharge pipe 5, and the stirring motor 7 drives the stirring rod 8 to rotate, so that the stirring rod 8 can fully stir the raw material inside the raw material barrel 1.

[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments or applied directly or indirectly without departing from the principles and spirit of the present invention. In other related technical fields, the scope of the present invention is defined by the appended claims and their equivalents, which are equally included in the scope of patent protection of the present invention.

Claims

1. A quantitative weighing device for polyurethane production, comprising: A raw material barrel (1), characterized in that: a connecting pipe (2) is fixedly connected to the bottom of the raw material barrel (1), and a material delivery pipe (3) is fixedly connected to the bottom of the connecting pipe (2); A quantitative component comprises a fixing rod (4), wherein the fixing rod (4) is fixedly connected to the bottom of the material delivery pipe (3).

2. A quantitative weighing device for polyurethane production according to claim 1, characterized in that: The quantitative component further comprises a discharge pipe (5), the top of the discharge pipe (5) is fixedly connected to a funnel (6), and the interior of the discharge pipe (5) is rotatably connected to a sealing plate (13).

3. A quantitative weighing device for polyurethane production according to claim 2, characterized in that: A cavity (14) is provided inside the sealing plate (13), and a weight sensor (15) is fixedly connected inside the cavity (14).

4. A quantitative weighing device for polyurethane production according to claim 2, characterized in that: A solenoid valve (12) is provided outside the discharge pipe (5).

5. The quantitative weighing device for polyurethane production according to claim 1, characterized in that: The outside of the material delivery pipe (3) is fixedly connected to a transmission motor (10), one end of the output shaft of the transmission motor (10) is fixedly connected to an auger (11), and the auger (11) extends into the interior of the material delivery pipe (3).

6. A quantitative weighing device for polyurethane production according to claim 1, characterized in that: The outside of the raw material barrel (1) is fixedly connected to a feed port (9), and the top of the feed port (9) is rotatably connected to a cover plate.

7. A quantitative weighing device for polyurethane production according to claim 2, characterized in that: The center position of the funnel (6) coincides with the discharge end of the discharge pipe (5).

8. A quantitative weighing device for polyurethane production according to claim 1, characterized in that: The top of the raw material barrel (1) is fixedly connected to a stirring motor (7), one end of the output shaft of the stirring motor (7) is fixedly connected to a stirring rod (8), and the stirring rod (8) extends into the interior of the raw material barrel (1).

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