CN213798035U

CN213798035U - Control system of flame-retardant plastic extruder

Info

Publication number: CN213798035U
Application number: CN202022307804.XU
Authority: CN
Inventors: 李刚
Original assignee: Laiwu Huaxia Ruite New Material Technology Co ltd
Current assignee: Laiwu Huaxia Ruite New Material Technology Co ltd
Priority date: 2020-10-16
Filing date: 2020-10-16
Publication date: 2021-07-27
Anticipated expiration: 2030-10-16

Abstract

The utility model discloses a fire-retardant plastics extruder control system relates to extruder technical field. The utility model comprises a casing, a material conveying screw rod arranged in the casing, a PLC controller, an intermediate relay, a contactor, an electric heating pipe, a temperature controller and a temperature sensor; the PLC is electrically connected with the contactor through an intermediate relay; the contactor is electrically connected with the electric heating pipe; the PLC is electrically connected with the temperature sensor through a temperature controller; temperature sensor and electric heating pipe all install in the inside of heating chamber. The utility model has the advantages of reasonable in design, be convenient for maintain, improved flame retardant plastic extruder's work efficiency effectively, be fit for popularizing and applying.

Description

Control system of flame-retardant plastic extruder

Technical Field

The utility model belongs to the technical field of the extruder, especially, relate to a fire-retardant plastics extruder control system.

Background

The extruder is a common plastic production device, and is a device for continuously mixing and extruding plastics, which consists of a feeding system, an extrusion system, a transmission system, a heating and cooling system, a control system and other main parts. In the working process of the extruder, the temperature control of the extruder is an extremely key control factor, the traditional temperature control generally adopts electric elements such as a solid-state relay to control the on-off of an electric heating pipe, and when the electric heating pipe leaks electricity or is burnt, the solid-state relay is broken down, so that the maintenance cost is greatly increased; moreover, when the material is extruded, the quality of the product is also influenced by the temperature, and if the temperature is too high and the rapid cooling cannot be realized, the material is possibly thermally degraded, and the qualified product cannot be obtained. Therefore, there is a need to develop a control system for a flame retardant plastic extruder in order to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides a fire-retardant plastics extruder control system, its purpose is in order to solve the problem that proposes among the above-mentioned background art.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme:

the utility model relates to a control system of a flame-retardant plastic extruder, which comprises a casing, a material conveying screw rod arranged in the casing, a PLC controller, an intermediate relay, a contactor, an electric heating pipe, a temperature controller and a temperature sensor; a cooling cavity in an annular structure is fixedly arranged in the shell; the cooling cavity is sleeved on the periphery of the material conveying screw; a heating cavity in an annular structure is fixedly arranged between the cooling cavity and the material conveying screw rod; the cooling chamber comprises a circulating chamber and a water supply chamber arranged on the periphery of the circulating chamber; a plurality of water conveying pipes are inserted into the inner side wall of the water supply chamber; one end of the water conveying pipe extends into the circulating chamber; the outer side wall of the water supply chamber is connected with a water outlet of the circulating pump through a first water supply pipe; the water inlet of the circulating pump is connected with the water outlet of a water storage tank through a second water supply pipe; the water inlet of the water storage tank is connected with one end of the circulating chamber through a third water supply pipe; the circulating pump is electrically connected with the PLC; the PLC is electrically connected with the contactor through an intermediate relay; the contactor is electrically connected with the electric heating pipe; the PLC is electrically connected with the temperature sensor through a temperature controller; the temperature sensor and the electric heating pipe are both arranged in the heating chamber.

Furthermore, the central axis of the water conveying pipe is perpendicular to the central axis of the water supply chamber, and the central axis of the water conveying pipe and the central axis of the water supply chamber are not on the same plane.

Furthermore, the number of the water conveying pipes is at least four.

Furthermore, the PLC is electrically connected with an interrupter; the breaker is electrically connected with the contactor.

The utility model discloses following beneficial effect has:

the utility model controls the power-on or power-off of the electric heating pipe by using the contactor, and connects the contactor with the PLC controller by using the intermediate relay, thereby effectively avoiding the possibility of damaging other electric elements when the electric heating pipe leaks electricity or burns out, and greatly reducing the maintenance cost; simultaneously, set up a cooling chamber through the heating cavity periphery at defeated material screw rod, can absorb the temperature of heating cavity through the mode of carrying the cooling water in to the cooling cavity when the temperature of heating cavity is too high, can realize the rapid cooling to the heating cavity to avoided the material because of the possibility of high temperature by the degradation, the practicality is stronger, has higher market using value.

Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic block diagram of a control system of a flame retardant plastic extruder of the present invention;

fig. 2 is a schematic structural view of the cooling chamber and the heating chamber of the present invention installed in the casing;

fig. 3 is a schematic structural diagram of the cooling chamber of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1-machine shell, 2-material conveying screw, 3-cooling chamber, 4-heating chamber, 5-first water supply pipe, 6-circulating pump, 7-second water supply pipe, 8-water storage tank, 9-third water supply pipe, 301-circulating chamber, 302-water supply chamber and 303-water conveying pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-3, the utility model relates to a control system of a flame retardant plastic extruder, which comprises a casing 1, a material conveying screw 2 arranged in the casing 1, a PLC controller, an intermediate relay, a contactor, an electric heating pipe, a temperature controller and a temperature sensor; the machine shell 1, a material conveying screw rod 2 arranged in the machine shell 1, a PLC (programmable logic controller), an intermediate relay, a contactor, an electric heating pipe, a temperature controller, a temperature sensor and other components are all designed conventionally in the field, wherein the model of the PLC is S7-300, the model of the intermediate relay is DZ-30, the model of the contactor is CJ10-10, the model of the temperature controller is TC103-3A4, and the model of the temperature sensor is TSD305-2C 55; the PLC controller, the intermediate relay, the contactor and the temperature controller are all arranged outside the machine shell 1; the PLC is electrically connected with the contactor through an intermediate relay; the contactor is electrically connected with the electric heating pipe; the contactor is used for controlling the connection or disconnection of the electric heating pipe; the PLC controller is electrically connected with a breaker; the breaker is electrically connected with the contactor; the breaker is used for protecting the contactor, so that the problem that the contactor is damaged when the electric heating tube is burnt out is further avoided; the PLC is electrically connected with the temperature sensor through a temperature controller; the temperature sensor and the electric heating pipe are both fixedly arranged in the heating chamber 4;

a cooling chamber 3 in an annular structure is fixedly arranged in the casing 1; the cooling chamber 3 is sleeved on the periphery of the material conveying screw 2; a heating chamber 4 in an annular structure is fixedly arranged between the cooling chamber 3 and the material conveying screw 2; the outer side wall of the heating chamber 4 is attached to the inner side wall of the cooling chamber 3; the heating chamber 4 is fixedly sleeved on the periphery of the material conveying screw 2; the cooling chamber 3 includes a circulation chamber 301 and a water supply chamber 302 provided on the outer periphery of the circulation chamber 301; the water supply chamber 302 is arranged at the other end of the circulating chamber 301, and the water supply chamber 302 and the circulating chamber 301 are of an integrated structure; ten water conveying pipes 303 are inserted into the inner side wall of the water supply chamber 302; one end of the water delivery pipe 303 extends into the circulating chamber 301; the central axis of the water pipe 303 is perpendicular to the central axis of the water supply chamber 302, and the central axis of the water pipe 303 and the central axis of the water supply chamber 302 are not on the same plane, so that a vortex can be formed in the circulation chamber 301, and the use effect of cooling water is ensured; the outer side wall of the water supply chamber 302 is connected with the water outlet of the circulating pump 6 through a first water supply pipe 5; the water inlet of the circulating pump 6 is connected with the water outlet of a water storage tank 8 through a second water supply pipe 7; the water inlet of the water storage tank 8 is connected with one end of the circulating chamber 301 through a third water supply pipe 9; the circulating pump 6 and the water storage tank 8 are arranged outside the machine shell 1; and the circulating pump 6 is electrically connected with the PLC.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A control system of a flame-retardant plastic extruder comprises a machine shell (1), a material conveying screw rod (2) arranged in the machine shell (1), a PLC (programmable logic controller), an intermediate relay, a contactor, an electric heating pipe, a temperature controller and a temperature sensor; the method is characterized in that:

a cooling chamber (3) in an annular structure is fixedly arranged in the shell (1); the cooling cavity (3) is sleeved on the periphery of the material conveying screw rod (2); a heating chamber (4) in an annular structure is fixedly arranged between the cooling chamber (3) and the material conveying screw rod (2);

the cooling chamber (3) comprises a circulation chamber (301) and a water supply chamber (302) arranged on the periphery of the circulation chamber (301); a plurality of water conveying pipes (303) are inserted into the inner side wall of the water supply chamber (302); one end of the water conveying pipe (303) extends into the circulating chamber (301);

the outer side wall of the water supply chamber (302) is connected with a water outlet of the circulating pump (6) through a first water supply pipe (5); the water inlet of the circulating pump (6) is connected with the water outlet of a water storage tank (8) through a second water supply pipe (7); a water inlet of the water storage tank (8) is connected with one end of the circulating chamber (301) through a third water supply pipe (9);

the circulating pump (6) is electrically connected with the PLC; the PLC is electrically connected with the contactor through an intermediate relay; the contactor is electrically connected with the electric heating pipe; the PLC is electrically connected with the temperature sensor through a temperature controller; the temperature sensor and the electric heating pipe are both arranged in the heating chamber (4).

2. The control system of the flame-retardant plastic extruder as claimed in claim 1, wherein the central axis of the water pipe (303) is perpendicular to the central axis of the water supply chamber (302), and the central axis of the water pipe (303) and the central axis of the water supply chamber (302) are not on the same plane.

3. A control system for a fire retardant plastic extruder as claimed in claim 1 or 2 wherein there are at least four water pipes (303).

4. The control system of claim 3, wherein the PLC controller is electrically connected with an electrical breaker; the breaker is electrically connected with the contactor.