SU1380989A1 - Heating/cooling arrangement for screw press - Google Patents

Abstract

The invention relates to equipment for the processing of plastics and can be used to heat and cool diary, induction housings for screw presses and forming heads. The purpose of the invention is to intensify the process of heating - cooling. and reduce energy costs. For this, the device contains a casing, it is CNSOH-tirovanno on the outer surface of the cylindrical body. The device contains channels for supplying and discharging the ch.dagenagent and means of electric heating. They are made in the form of a heat conductive heat TofiKo electric insulation coating on the walls of the channel; CHV. The coating was coated with a hot wire 1 of a conductive material; 1a with a high electrical resistance. Along each channel, less than two vortex-forming elements are installed to cover no more than 20% of the cross-sectional area of the canal. They heat up chi: indr, ll of this electric current is supplied to the layer; depres sion. A layer of current flows. The effectiveness of teloperelachi is due to the low thermal resistance and the developed surface heat (Tbmen. 1 Cp f-crystals, 1 1 ill. (L with 00 with 00 with

Description

one

13

) Orientation refers to the equipment of K;) processing of plastics and (we can; heating; 1 used to heat i.; as much as ;; cylindrical bodies of black presses and forming heads.

Kohl isogfeteni - intensification of the process:; agrevva-cooling and reduction of energy consumption.

H. i FIG. I depicts a heating-cooling device for a worm press with:; oncpt; -; Hb M by extending the channels for iodachi and cooling refrigeration, longitudinal section; in FIG. 2, section A-A in FIG. one; in fig. 3 - schematic arrangement of channels with TL n; oifpoHo with heat-resistant electro-ii3o.iHL.n (); HbiN; coating} ia of their outer 1.1k (sweep); in fig. 4 - per1); nd napi; a; T heating and cooling ;; and the device of the press;; th press; in fig. 5 shows a section B-; i in FIG. -; in fig. 6 is a schematic layout of the channels; 7 - the second variant of the vylo.: the method of heating- Gelno-ohk: 1gazhilosch device, fig. 8 - section bb pa fig-. 7; in fig. 9 - schematic arrangement of channels; ;; a fip. 10 - the third variant of Bijaio.nHcTnH on G 5evate: 1 but a cooling device; in fig. 11 is a section along the line I-i in FIG. I v).

::; i. those cotton ;; But the cooling device of the screw press contains di-. P1nl,;: ices c i, on which 1,: g-: onti1) ova11 detachable casing 2, on the load of which for vygyul- iieni.i pne) Accounts grooves, connected D1) u with l, rugom longitudinal sleeves according to the t; one-eyed scheme.

The screen 3 is fixed at 2 oerazov.chie lschk river 4 and lrodollyh 5 KaHarivni d, n 1Chodachi and withdrawal of hlal1 epl and p; g.) The mix of funds on i pciia. KjiOMe addition, gr. N 3 s-1abzhen |); icnj) L;, tenant; 6 and 7 cC cameras OTBCT C i Befnio for lodachi and tap; fret 1chp1ta, as well as along each i, onciK 4ni: rii channel installed but less pemp; 1e; 1b of eddy-forming em. mept 8 for a pseudo-no more than iia 2 (1 ii.nemayn cross section to apala -h and j.

(// LMC; 1.l pagreva made in the form of; enni.:jiru;Hii:iHii:-o heat-resistant electropze n-niiiv: P1op o) ГГи on the walls 1 ar 1;:;, | 5 4 and; ), in the case of ep applied pt1chgplym iiaiiiiijieHncM alumina

0989

A1 „0

0

five

20

25

35

40

45

50

5: s

Uj, coated with a layer of heat-resistant electrically conductive material with high electrical resistance, for example X20H80-H.

In the nerve version of the heating cooling device of the worm cage (Fig. 4), the cylindrical body 1 is hollowed out with longitudinal manholes with Bi-transforming elements 8 installed in them. Longitudinal grooves are also made on the inner surface of the casing 2. The casing 2 is mounted on a cylindrical housing 1 with the formation of longitudinal channels 5. On the inner surface of the casing 2, transverse grooves are made to connect its longitudinal laps to the required scheme. Additional channels (not shown) are formed between the lateral grooves of the casing 2 and the outer surface of the cylindrical body 1. Tellurized heat-resistant electrically insulating coating with a layer of heat-resistant electrically conductive material with high electrical resistance applied on it is applied to a part of the longitudinal channel 5 (on the casing 2). The distribution chambers of the 6 and 7 l lodachy and the withdrawal of chlaDagent are filled in the middle part of the device. The heating and cooling device itself is equipped with a connection unit 9, made on studs with nuts and washers (not shown), insulated from the casing 2 and lered to start to connect the channel covering with external wires (not shown), and with: with washers, made of a material with a sufficiently small specific electrical resistance, such as titanium.

In the second embodiment of the heating cooling device |, fig. 7) manholes are made on the outer surface of the casing 2, and the channels are formed between the screen 3 and the outer surface of the casing 2.

In the third embodiment, on a revolving cooling device (FIG. 10), the lasers were filled on the inner surface of the casing 2, and the channels were formed between the inner surface of the casing 2 and the outer surface of the cylindrical body 1.

Heating-cooling device of the screw press works as follows.

In the process of heating the cylindrical body 1, an electrical voltage is applied to the layer 10 of a heat-resistant electrically conductive material with high electrical resistance (resistive layer), as a result of which electric current flows through it, the value of which is opposite to the case 2 can be removed and the channels cleaned. A spread coating with a layer 10 applied to it can be removed, for example, by sandblasting, and then a new one is applied. High heat transfer efficiency due to low thermal resistance and developed

It is proportional to the electric resistance- Q heat exchange surface.

chaining.

In this case, heat is released in layer 10. Due to the developed surface (due to channels), a thin layer (up to 0.2 mm) and reliable contact with the coating, the device provides effective heat transfer mainly by heat conduction of heat released in layer 10 with a small temperature difference between layer 10 and the object to be heated. At elevated operating temperatures (more than 300 ° C), the heat transfer efficiency is further enhanced by the heat transferred by the radiation.

When the desired temperature on the cylindrical housing 1 is reached, the voltage supply is stopped. If it is necessary to cool the housing 1, the refrigerant, for example air, through the distribution chamber 6 enters the transverse grooves. In this case, a predominantly convective heat transfer from the housing 1 to the air takes place, which then enters the distribution chamber 7 of the refrigerant outlet.

The efficiency of convective heat transfer is increased due to the turbulization of the air flow on the eddy-forming elements 8. The equalization of air flows and additional cooling is achieved in the longitudinal grooves.

The proposed device is repair-capable, compact, with the need

Small temperature differences between the layer 10 and the heated body 1 or the head (not shown) allow to increase the service life of the resulting products and reduce the loss of electricity.

about p

and 3 o r e t e n 1

Claims (2)

one . Worm press heating and cooling device, with: 1 pilot casing mounted on the outer surface of the cylindrical casing of the worm press, channel): i: m refrigerant supply and withdrawal, slides -; - electric heating and distribution chamber 11l of refrigerant gas supply into the channels, which is due to the fact that, for the purpose of integrating the heating-cooling process, 1, and reducing energy consumption, the means of electrical heating are made in heat-conducting heat-resistant electrical insulation covering of the walls of the channels from to ese ngm it elektroprozoli refractory layer; - high electrical material: resistance. 2. The device according to p. I, and yu e with the fact that About tl II of the fact that along each channel installed on NieHbaioi; at least two eddy-forming straps with which the screw press is supplied to overlap no more than 0- the channel cross-sectional area. ipaaasht   t -J /one Fi & 1 . Aa FIG. 2 EV shmmmmmmmsh  „/ -Ff, 9ZY // 7 ////////// ((/// V //// ////////// V ////, eight FIG. 6 and & .8 FIG. five FIG. 9 R w ////////////////////// ;, k-g one FIG. YU Phage. / 7