CN1786137A

CN1786137A - Internal circulation boiling pot

Info

Publication number: CN1786137A
Application number: CN 200510061676
Authority: CN
Inventors: 黄粤宁; 陈小平
Original assignee: Lehui Food Equipment Manufacutre Co Ltd Ningbo
Current assignee: Ningbo Lehui International Engineering Equipment Co Ltd
Priority date: 2005-11-23
Filing date: 2005-11-23
Publication date: 2006-06-14
Anticipated expiration: 2025-11-23
Also published as: CN100366720C

Abstract

The invention relates to an internal circulation-boiling kettle. It includes kettle body, tube and shell heat exchanger, and allocation cover. The tube and shell heat exchanger includes shell body and many exchange tubes. Its feature is that kettle body is set helical runner linked to electric machinery. After adopting the upper structure, wheat juice is forced to flow to the upper around the center tube of the heat exchanger by the helical runner. This can prevent fouling and blinding, and increase ''thermosiphon'' action; and at the same time the wheat juice is only need to keep boiling to realize its circulation. So this can increase boiling efficiency, economize energy sources, and reduce consumption.

Description

Internal circulation boiling pot

Technical field

The present invention relates to a kind of equipment for brewing beer, refer to that especially a kind of wheat juice constantly circulates, seethes with excitement, evaporates within it, until the pot that boils.

Background technology

At present, in the technological process of producing beer, all need to adopt internally heated type or external heating type boiling pot, wherein, the internally heated type boiling pot adopts tube and shell heat exchanger as its internal heater usually, as China Patent No. is a kind of device 99257231.2 " dual-purpose novel beer Wort boiling pots " have just been described, it comprises that the bottom has the pot body of loop exit, be positioned at intravital circulation cartridge heater of pot and the reflector that is positioned at the cartridge heater top, cartridge heater is tube and shell heat exchanger, be provided with a plurality of vertical pipes in it, each pipe is connected with the circulation import, is provided with steam inlet and outlet simultaneously on barrel.During work, by pump wheat juice is sent into by the circulation import in the pipe of cartridge heater, steam feeds from steam inlet, and like this, wheat juice from bottom to top is by heating with the heat exchange of steam, and steam is condensed into water and flows out from vapour outlet.Locate wheat juice and be heated the back when arriving the certain temperature difference when upper and lower section in the pipe, epimere wheat juice begins to seethe with excitement in pipe, finally from the ejection suitable for reading of cartridge heater, is fallen in pot body by the reflector retaining again, repeat above-mentioned working cycle like this, after reaching the Wort boiling requirement, send from loop exit.Thereby adopt the boiling pot of said structure, can finish the function of boiling of wheat juice preferably.But in use find: make wheat juice between internal heater and boiling pot, occur circulating, must make and to realize after the temperature head that reaches certain between the wheat juice of the wheat juice on pipe top and bottom, that is to say, before the circulation of wheat juice, it has one to be subjected to thermal process in pipe, and just wheat juice immobilising during this period of time in, make that easily the generation of wheat juice part is overheated and scale formation occurs, when serious, even the wheat juice in the pipe is stopped up, obviously, this has improved the cleaning requirement of internal heater on the one hand, has also influenced the normal use of boiling pot on the other hand.Simultaneously, this structure has also caused the defective that heat-up time is long, steam consumption is big, thereby causes the adverse consequences that production efficiency is low, cost is high, and also just because of this long heating process, make that the beer foam of brewageing out is few, so that influenced the taste of beer.Thereby boiling pot of the prior art structurally still awaits further perfect.

Summary of the invention

Technical problem to be solved by this invention is the present situation at prior art, provides a kind of and both can shorten boiling time, can save energy again, the internal circulation boiling pot of antiscale.

The present invention solves the problems of the technologies described above the technical scheme that is adopted: this internal circulation boiling pot comprises the pot body that has wheat juice import and export, place the intravital tube and shell heat exchanger of pot and be positioned at the distribution cap of tube and shell heat exchanger top, wherein, described tube and shell heat exchanger comprises the housing that has steam inlet and condensation-water drain again and is positioned at housing and a plurality of heat transfer tubes of the upper and lower tube sheet of housing are run through at two ends, it is characterized in that: be provided with and pot helical runner that external motor links in the pot body of described interchanger below.

As a further improvement on the present invention, can be covered with lower ending opening outside the described impeller and the guide shell that touches mutually upper end and the bottom of described housing.

Described guide shell lower ending opening is outwards horn-like for good by what expand to be designed to.

As another kind of improvement the of the present invention, described motor can be fixed on the outside of frame, and described frame is connected with bottom of pot body mutually by flange, described impeller shaft sealing links by shaft joint and the motor output shaft that stretches in the frame after running through above-mentioned flange, simultaneously, in described frame, also be provided with the single direction thrust ball bearing and the band sleeve self-aligning roller bearing of the described impeller shaft of supporting.

Described impeller shaft can be provided with mechanically-sealing apparatus at contiguous described flange place.

Can be provided with oil baffle disc on the impeller shaft of described single direction thrust ball bearing and band sleeve self-aligning roller bearing top, and on frame side wall, be provided with and the corresponding oil leaking hole of described oil baffle disc.

Compared with prior art, because the present invention has set up spiral propeller, the wheat juice that can promote pot body bottom consumingly upwards flows along the interchanger central canal, force wheat juice to carry out forced convection, obviously, such structure can prevent the generation of fouling, latch up phenomenon on the one hand effectively, has also strengthened " thermal siphon " effect simultaneously, has improved wheat juice round-robin volumetric flow rate widely; On the other hand, only need keep boiling state after wheat juice is heated gets final product, effectively circulation can be by realizing by rotary blade, thereby need not the temperature head that reaches original, just can realize the circulation of wheat juice, boil intensity, minimizing steam consumption thereby can obviously reduce, shorten boiling time, when efficient is boiled in raising, reach energy saving purposes, thereby the present invention can obtain beyond thought technique effect in boiling part, is worth applying in the brewage industry.

Description of drawings

Fig. 1 is the structural representation of the embodiment of the invention;

Fig. 2 is impeller and a motor enlarged diagram partly among Fig. 1;

Fig. 3 is the enlarged diagram of I part among Fig. 2.

Embodiment

Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.

As shown in Figure 1, this boiling pot comprises pot body 1, places the intravital tube and shell heat exchanger 2 of pot, distribution cap 14 and helical runner 3, and wherein, the bottom of pot body is provided with wheat juice import 6 and wheat juice outlet 7, and the top of pot body is provided with vapor pipe 15.Described tube and shell heat exchanger 2 comprises the housing 12 that has steam inlet 8, condensation-water drain 9 again and is positioned at the intravital many heat transfer tubes 11 of shell, steam inlet and condensation-water drain stretch out outside pot body by pipeline, each heat transfer tube 11 is bearing between the upper tubesheet 10, lower tubesheet 13 of housing, and two ends are fixed on the upper and lower tube sheet of housing, are used for admitting wheat juice.And distribution cap 14 is positioned at the top of housing 12, so that in the wheat juice reflection twice-cooked stir-frying body 1 with the ejection of interchanger top.3 of described helical runners are positioned at housing 12 belows, and external motor 4 linked with being fixed on pot after the impeller shaft sealing ran through pot body 1 bottom.

In order to make wheat juice have better axial flow effect, in the present embodiment, be covered with lower ending opening outside the impeller 3 and guide shell 5 that upper end and the lower tubesheet of housing touch mutually, and these guide shell 5 lower ending opening portions are designed to outwards horn-like by what expand, to reduce wheat juice mobile resistance.

Consider impeller shaft and motor shaft reliable be connected and and the pot body between sealing effectiveness, here, motor 4 is fixed on the outside of frame 16, referring to figs. 2 and 3, and frame 16 is connected with bottom of pot body mutually by flange 20, impeller shaft runs through above-mentioned flange 20 by mechanically-sealing apparatus 21 sealings of routine, link by shaft joint 17 and the motor output shaft that stretches in the frame 16 again, simultaneously, in frame 16, also be provided with the single direction thrust ball bearing 18 and the band sleeve self-aligning roller bearing 19 of supporting impeller shaft.In order to prolong the work-ing life of bearing, the impeller shaft above single direction thrust ball bearing 18 and the band sleeve self-aligning roller bearing 19 is provided with oil baffle disc 22, and is provided with oil leaking hole 23 on frame side wall, can prevent the damage of bearing effectively.

During work, wheat juice is sent in pot body 1 by wheat juice import 6 places by pump, and steam feeds from steam inlet 8, this moment starter motor 4, drive helical runner 3 high speed rotating, 3 strong wheat juice that promote of helical runner, make its axial flow, promptly along central canal convection current from bottom to top, like this, wheat juice in the heat transfer tube 11 by with the heat exchange post-heating of steam, and steam is condensed into water from condensation-water drain 9 outflows, and the wheat juice after being heated seethes with excitement in heat transfer tube 11 epimeres, finally sprays from housing 12 tops, and be assigned with cover 14 reflections and spill and get back in pot body, the water vapor that distributes is upwards discharged by vapor pipe 15.Repeat above-mentioned working cycle like this, after directly only wheat juice reaches the requirement of boiling, flow out from the wheat juice outlet 7 of bottom of pot body.Adopt the boiling pot of the foregoing description, can make the wheat juice of all sites in pot body promptly reach boiling temps, general boiling time only needs 40 minutes～60 minutes, thereby can drive away volatility bad flavor composition-dimethyl sulphide preferably, help keeping and enrich beer foam material-solidifiable nitrogen.Have only 3%～5% and boil intensity, and the wash number of internal heater reduces obviously, promptly reduced the cleaning requirement of internal heater, make it be more suitable for the demand of modern production.

Claims

1, a kind of internal circulation boiling pot, it comprises the pot body (1) that has wheat juice import and export (6,7), the distribution cap (14) that places pot intravital tube and shell heat exchanger (2) and be positioned at the tube and shell heat exchanger top, wherein, described tube and shell heat exchanger comprises the housing (12) that has steam inlet and condensation-water drain (8,9) again and is positioned at a plurality of heat transfer tubes (11) that the upper and lower tube sheet of housing (10,13) is run through at housing and two ends, it is characterized in that: be provided with a helical runner (3) that links with the external motor (4) of pot in the pot body of described interchanger below.

2, internal circulation boiling pot according to claim 1 is characterized in that: be covered with lower ending opening outside the described impeller (3) and guide shell (5) that upper end and described housing bottom touch mutually.

3, internal circulation boiling pot according to claim 2 is characterized in that: described guide shell (5) lower ending opening is designed to outwards horn-like by what expand.

4, according to claim 1 or 2 or 3 described internal circulation boiling pots, it is characterized in that: described motor (4) is fixed on the outside of frame (16), and described frame (16) is connected with bottom of pot body mutually by flange (20), described impeller shaft sealing runs through above-mentioned flange (20) back and links by shaft joint (17) and the motor output shaft that stretches in the frame, simultaneously, in described frame, also be provided with the single direction thrust ball bearing (18) and the band sleeve self-aligning roller bearing (19) of the described impeller shaft of supporting.

5, internal circulation boiling pot according to claim 4 is characterized in that: described impeller (3) rotating shaft is provided with mechanically-sealing apparatus (21) at contiguous described flange place.

6, internal circulation boiling pot according to claim 4, it is characterized in that: the impeller shaft of described single direction thrust ball bearing (18) and band sleeve self-aligning roller bearing (19) top is provided with oil baffle disc (22), and is provided with on frame side wall and the corresponding oil leaking hole of described oil baffle disc (23).