Water circulation system for chinlon slicing and pelletizing

Abstract

The utility model provides a chinlon slicing and pelletizing water circulation system which comprises a pelletizing machine and an octagonal rotary drum filter, and the pelletizing machine is provided with a pelletizing water outlet and a pelletizing water inlet; the system further comprises a controller, an intermediate storage tank, a heat exchanger, a first filter, a first pressure transmitter, a second pressure transmitter, a first delivery pump, a first valve, a second valve and a pressure regulating valve. The controller is electrically connected with the first delivery pump, the first pressure transmitter, the second pressure transmitter and the pressure regulating valve. Energy is saved, and production quality is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a nylon chip cutting water circulation system. BACKGROUND

[0002] The chip cutter is an important equipment for nylon chip production. In the production process, the chip cutter conveys the material strip extruded by the casting head through overflow water, spray water, cooling water to the cutter device for cutting, and then to the next process through conveying water (hereinafter referred to as cutting water). The cutting water can be recycled. Generally, it is stored in an intermediate storage tank after being filtered by a preliminary filter and an octagonal rotary drum filter. Then, it is pressurized by a pump, filtered and cooled, and conveyed to the chip cutter. The overflow water pressure into the chip cutter is constant. The excess cutting water is returned to the intermediate storage tank. The spray cleaning water used by the octagonal rotary drum filter is output by another pump and controlled by a hand valve. The excess water is returned to the intermediate storage tank.

[0003] 1. The cutting water into the chip cutter is controlled by a backflow regulating valve to keep the pressure constant. There is a large amount of backflow water, which wastes energy.

[0004] 2. In the cutting water branch for cleaning the octagonal rotary drum filter, a power frequency pump and a hand valve are used for control. The control is not convenient, and there is a large amount of backflow. The cutting water used is not filtered, which can easily block the spray head and consume labor for processing. UTILITY MODEL CONTENTS

[0005] The utility model solves the technical problem to provide a nylon chip cutting water circulation system, which saves energy and improves production quality.

[0006] The utility model is implemented as follows: a nylon chip cutting water circulation system, comprising a chip cutter and an octagonal rotary drum filter. The chip cutter is provided with a cutting water outlet and a cutting water inlet. It comprises a controller, an intermediate storage tank, a heat exchanger, a first filter, a first pressure transmitter, a second pressure transmitter, a first conveying pump, a first valve, a second valve, and a pressure regulating valve.

[0007] The cutting water outlet is connected to the intermediate storage tank through the octagonal rotary drum filter. The intermediate storage tank is connected to the first filter through the first conveying pump. The first filter is connected to the one end of the first valve and the one end of the pressure regulating valve through the heat exchanger. The other end of the first valve is connected to the cutting water inlet. The other end of the pressure regulating valve is connected to the octagonal rotary drum filter through the second valve.

[0008] The first pressure transmitter is arranged between the first valve and the cutting water inlet and close to the cutting water inlet. The second pressure transmitter is arranged between the second valve and the octagonal rotary drum filter.

[0009] The controller is electrically connected with the first delivery pump, the first pressure transmitter, the second pressure transmitter and the pressure regulating valve respectively.

[0010] Further, the third valve, the fourth valve and the second delivery pump are further included, the intermediate storage tank is connected with the first delivery pump and the second delivery pump respectively, the first delivery pump is connected to the first filter through the third valve, the second delivery pump is connected to the first filter through the fourth valve, and the controller is electrically connected with the second delivery pump.

[0011] The utility model has the advantages that:

[0012] 1, the utility model only needs to use one water pump with frequency conversion function control to supply the pelletizing water, the rotation speed of the water pump is controlled to ensure the pelletizing water pressure of the pelletizer, the pressure regulating valve is controlled to ensure the pelletizing water pressure of the octagonal rotary drum, and the backflow circuit is not needed, so that the energy is saved.

[0013] 2, the pelletizing water required by the octagonal rotary drum filter comes from the fine filtering and cooling section, so that the spray head in the section is not easy to block, the labor cost is saved, the pelletizing water from the cooling section can reduce the temperature of the fluid in the section of the octagonal rotary drum filter, the impurities are beneficial to be filtered out, the quality of the circulating water is improved, and therefore the production quality is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] The utility model will be further described in connection with the embodiments and with reference to the drawings.

[0015] Figure 1 It is the structural principle view of a nylon chip pelletizing water circulating system of the utility model. DETAILED DESCRIPTION

[0016] Please refer to Figure 1 The utility model discloses a nylon chip pelletizing water circulating system, including pelletizer 101, octagonal rotary drum filter 102, controller (not shown in the drawing), intermediate storage tank 103, heat exchanger 104, first filter 105, first pressure transmitter 106, second pressure transmitter 107, first delivery pump 108, first valve 109, pressure regulating valve 110 and second valve 111, the pelletizer 101 is equipped with pelletizing water outlet 1011 and pelletizing water import 1012;The controller is the singlechip or computer that directly buys in the market;

[0017] The cutting water outlet 1011 is connected to the intermediate storage tank 103 through the octagonal rotary drum filter 102, the intermediate storage tank 103 is connected to the first filter 105 through the first conveying pump 108, the first filter 105 is connected to one end of the first valve 109 and one end of the pressure regulating valve 110 respectively through the heat exchanger 104; the other end of the first valve 109 is connected to the cutting water inlet 1012 respectively, and the other end of the pressure regulating valve 110 is connected to the octagonal rotary drum filter 102 through the second valve 111;

[0018] The first pressure transmitter 106 is arranged between the first valve 109 and the cutting water inlet 1012 and close to the cutting water inlet 1012; the second pressure transmitter 107 is arranged between the second valve 111 and the octagonal rotary drum filter 102;

[0019] The controller is electrically connected to the first conveying pump 108, the first pressure transmitter 106, the second pressure transmitter 107 and the pressure regulating valve 110 respectively.

[0020] The used cutting water enters the octagonal rotary drum filter 102 for preliminary filtration and then enters the intermediate storage tank 103, the rotating speed of the first conveying pump 108 is controlled, the cutting water is conveyed to the first filter 105 for fine filtration, then passes through the heat exchanger 104 for cooling, and then is divided into two branches, one of which enters the cutting machine 1 after passing through the first valve 109, the first pressure transmitter 106 is arranged behind the first valve 109, the controller adjusts the rotating speed of the pump according to the signal of the first pressure transmitter 106 to reach the required pressure, the rotating speed of the pump is automatically increased when the pressure is small, and the rotating speed of the pump is automatically decreased when the pressure is large. The other branch enters the octagonal rotary drum filter 102 for spray cleaning through the pressure regulating valve 110 and the second valve 111, the second pressure transmitter 107 feeds back the signal, and the controller adjusts the opening of the pressure regulating valve 110 to control the required pressure, the opening of the valve is decreased when the pressure is large, and the opening of the valve is increased when the pressure is small.

[0021] In the embodiment, preferably, the third valve 112, the fourth valve 113 and the second delivery pump 114 are further included, the intermediate storage tank 103 is connected with the first delivery pump 108 and the second delivery pump 114 respectively, the first delivery pump 108 is connected with the first filter 105 through the third valve 112, the second delivery pump 114 is connected with the first filter 105 through the fourth valve 113, the controller is electrically connected with the second delivery pump 114, the first delivery pump 108 and the second delivery pump 114 can be mutual standby, the first delivery pump 108 and the second delivery pump 114 can be started simultaneously under the condition of insufficient pressure, and the controller controls the rotating speed of the first delivery pump 108 and the second delivery pump 114 according to the pressure signal of the first pressure transmitter 106.

[0022] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0023] Although the specific embodiments of the present application are described above, those skilled in the art should understand that the specific examples described are only illustrative, and are not intended to limit the scope of the present application, and equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the present application should be covered within the scope of the claims of the present application.

Claims

1. A nylon chip cutting water circulation system, comprising a cutting machine and an octagonal drum filter, wherein the cutting machine is provided with a cutting water outlet and a cutting water inlet; characterized in that, It comprises: a controller, an intermediate storage tank, a heat exchanger, a first filter, a first pressure transmitter, a second pressure transmitter, a first delivery pump, a first valve, a second valve and a pressure regulating valve; the cut pellet water outlet is connected to the intermediate storage tank through an octagonal rotary drum filter, the intermediate storage tank is connected to the first filter through the first delivery pump, the first filter is connected to one end of the first valve and one end of the pressure regulating valve through the heat exchanger respectively; the other end of the first valve is connected to the cut pellet water inlet respectively, the other end of the pressure regulating valve is connected to the octagonal rotary drum filter through the second valve; the first pressure transmitter is arranged between the first valve and the cut pellet water inlet and close to the cut pellet water inlet; the second pressure transmitter is arranged between the second valve and the octagonal rotary drum filter; the controller is electrically connected to the first delivery pump, the first pressure transmitter, the second pressure transmitter and the pressure regulating valve respectively.

2. A nylon chip cutting water circulation system as claimed in claim 1, wherein, It further comprises a third valve, a fourth valve and a second delivery pump, the intermediate storage tank is connected to the first delivery pump and the second delivery pump respectively, the first delivery pump is connected to the first filter through the third valve, the second delivery pump is connected to the first filter through the fourth valve; the controller is electrically connected to the second delivery pump.

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