CN1563869A

CN1563869A - Atmospheric ligh temp and energy saving drying drum set

Info

Publication number: CN1563869A
Application number: CN 200410010163
Authority: CN
Inventors: 张善智; 陈静
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-03-29
Filing date: 2004-03-29
Publication date: 2005-01-12
Anticipated expiration: 2024-03-29
Also published as: CN1322297C

Abstract

Discharge pipe and sucking pipe in each drying drum is connected to general discharge pipe and sucking pipe. Control valve is installed on each sucking pipe, and gathering oil pipe having check valve is connected to discharge pipe. Lower end of gathering oil pipe is connected to fixed return oil pipe. Movable pipe sheathing on the fixed return oil pipe through connection plate is connected to annular ball float. There is a hole on wall of low part of fixed return oil pipe. Low-end cap for the said hole is connected to a support plate. In the invention, one oil pump can supply oil for multiple drums. The features are reduced size of equipment, and high efficiency.

Description

Constant-pressure and high-temperature energy saving baking roller unit

One, technical field: the present invention relates to a kind of drying unit, relate in particular to a kind of be applied in the industries such as food, papermaking, printing and dyeing, chemical industry dry, cure, slaking, the constant-pressure and high-temperature energy saving baking roller unit in ageing unit operations stage.

Two, background technology: at present, the drying roller tube majority of using in the domestic food industry is to be transplanted by the drying cylinder of industries such as papermaking, weaving, belong to pressure vessel, its rated operating pressure is 0.3Mpa, the nominal operation temperature is 143 ℃, owing to adopt the low pressure water vapor heat supply, so can not under normal pressure, hot conditions, work.Also have employing directly electrically heated, this kind heat form power consumption is big; The inventor has invented " constant-pressure and high-temperature energy saving baking roller " and has obtained Chinese patent in 99 years, the patent No. is ZL99247978.9, the similar general drying cylinder of this drying roller tube profile, its design feature is to have a fixing adjustable deep fat distributor gear in the roller roller is heated, and adopts the structure that is communicated with atmosphere to keep being in atmospheric pressure state in the roller simultaneously.This drying roller tube can be worked under normal pressure, hot conditions, drying effect is also better, but must be unit list oil pump feed, does not satisfy the demand of production technology sometimes, as want to set up a roller, just need set up a table oil pump, therefore cause equipment huge, maintenance load is big, the operating cost height, fault is many, influences operating efficiency, and bake out temperature is wayward.

Three, summary of the invention: depositing in order to solve " constant-pressure and high-temperature energy saving baking roller " that unit work drying efficiency is low, the uppity problem of bake out temperature, the purpose of this invention is to provide a kind of satisfy big industrial production needs, high efficiency, energy-conservation, maintenance load is little, the constant-pressure and high-temperature energy saving baking roller unit of the low and temperature constant of operating cost.

Technical scheme of the present invention realizes in the following manner:

A kind of constant-pressure and high-temperature energy saving baking roller unit, it is to be formed in parallel by several constant-pressure and high-temperature energy saving baking rollers, wherein the oil exit pipe of each drying roller tube is connected with total oil exit pipe, oil inlet pipe is connected with total oil inlet pipe, on the oil inlet pipe of each drying roller tube by-pass valve control is housed, in each drying roller tube, be communicated with the oil collecting pipe of being with check-valves with oil exit pipe, the oil collecting pipe lower end is connected with fixing oil return pipe, fixedly establish the hole on the tube wall of oil return pipe bottom, port has the bottom end cover of the sealing mouth of pipe, fixedly outside, oil return pipe bottom is set with adjustable pipe, adjustable pipe is symmetrically connected with annular ball float by connecting plate, and fixedly the bottom end cover of oil return pipe and is used to support and the support plate of shutoff adjustable pipe is connected.

Adjustable pipe connects at least two ball floats by the connecting plate symmetry.

Fixedly the bottom end cover of oil return pipe is connected with support plate by bolt.

Good effect of the present invention is:

1, this drying roller tube unit is realized giving a plurality of roller fuel feeding with a table oil pump, has reduced number of devices and equipment volume, and maintenance load is little, and operating cost is low.

2, in this drying roller tube unit, all set up an oil return controlling organization on the oil collecting pipe in each roller, made the pasta in the drying roller tube movable within the specific limits all the time, guaranteed the bake out temperature stability of drying roller tube.

3, this drying roller tube unit is worked under condition of normal pressure, has eliminated the danger that is brought by pressure vessel, has reduced the difficulty of equipment making, the operation safety and reliability.

4, this drying roller tube unit bake out temperature is brought up to 350 ℃ from 143 ℃ of existing drying cylinder operating temperature, has improved equipment thermal efficiency and operating efficiency greatly, has shortened technological process.

5, this drying roller tube unit adopts conduction oil to do the heat supply of work medium, thermal efficiency height, and do not have waste liquid in the course of work, waste gas is emitted, and helps environmental protection, and is also energy-conservation than steam dryer, electric drying cylinder.

6, the oil gas in this drying roller tube unit good sealing effect, roller communicates with atmosphere by buffer, condenser at oil inlet pipe one end, and other positions are by seal ring seal, and oil gas can not leak outside.

7, the oil temperature of this drying roller tube unit can be regulated arbitrarily between normal temperature to 350 ℃.

Four, description of drawings:

Fig. 1 is a profile vertical view of the present invention.

Fig. 2 is Figure 1A-A cutaway view.

Fig. 3 is the B portion enlarged drawing of Fig. 2.

Five, the specific embodiment:

Below in conjunction with accompanying drawing the present invention is described in further detail:

By Fig. 1, Fig. 2 as can be seen, this oven dry unit is to be formed in parallel by several drying roller tubes 14, and the oil exit pipe 7 of each roller is connected with total oil exit pipe 33, oil inlet pipe 15 is connected with total oil inlet pipe 32, on the oil inlet pipe 15 of each drying roller tube 14 by-pass valve control 31 is housed; Also can find out by Fig. 2, the concrete structure of drying roller tube 14, the hollow shaft head 6 at drying roller tube 14 two ends is contained in the bearing block 4 by bearing 5, bearing block is fixed on the ground support 23, on the hollow shaft of roller one end travelling gear 3 is housed, motor driven gear 3 rotates drying roller tube 14, buffer 19 is equipped with in the hollow shaft termination of the other end, buffer is connected with condenser 22 by wireway 20, and communicate with atmosphere, the hollow shaft endoporus is respectively by bearing 2, the central tube that blocks with plug 8 in the middle of bearing 18 is equipped with one, be oil exit pipe 7 and oil inlet pipe 15, the oil pipe two ends are contained on the oil tube bracket 1, are connected with bracing frame 17 and oil-feed arm 9 on the oil inlet pipe 15 in the drying roller tube 14, and oil-feed arm 9 is connected as a single entity with distributing trough 16, distributing trough and distribution plate 12 are connected as a single entity, leave slit 10 between distribution plate 12 and drying roller tube 14 inwalls in order to control oil stream heating roller, the oil exit pipe 7 in the drying roller tube 14 is connected with oil collecting pipe 13, and check-valves 11 is housed on the oil collecting pipe; As seen from Figure 3: oil collecting pipe 13 lower ends are connected with fixing oil return pipe 25, fixedly establish hole 28 on the oil return pipe 25 bottom tube walls, end has bottom end cover 29, fixedly outside, oil return pipe 25 bottoms is set with adjustable pipe 27, adjustable pipe 27 connects at least two annular ball floats 26 by connecting plate 24 symmetries, fixedly the bottom end cover 29 of oil return pipe is connected by the support plate 30 of bolt with supporting and shutoff adjustable pipe 27, drying roller tube 14 and oil exit pipe 7, between the hollow shaft head of drying roller tube oil inlet end and buffer 19 and buffer and the oil inlet pipe 15 sealing ring 21 is housed all, in case oil gas leaks outside.

The operation principle of single drying roller tube oil return part is: oil pump feed, work oil in the drying roller tube 14 floats ball float 26, the unsteady drive of ball float adjustable pipe 27 edges fixedly oil return pipe 25 move up and down, the lower dead center of motion is: when adjustable pipe touches support plate 30, fixedly the hole on the oil return pipe 28 is all blocked, not outwards oil extraction in the roller, because oil-feed is not interrupted, the liquid level of oil begins to rise in the roller, and ball float 26 upwards floats drive adjustable pipe 27 and leaves support plate 30, fixedly the hole 28 on oil return pipe 25 walls begins to expose and outwards oil extraction, when all expose in hole 29, the recirculating oil quantity maximum, along with oil return greater than oil-feed, oil level begins again to descend, ball float, circulates until lower support plate so repeatedly along with the whereabouts, make the pasta in the roller movable within the specific limits all the time, guarantee the drying roller tube temperature stabilization.

The circulating oil path of single drying roller tube is: through the heat conduction fluid after the heating, oil inlet pipe 15 in hot oil furnace enters drying roller tube 14, send into distributing trough 16 through oil-feed arm 9, and in the slit 10 between inflow distribution plate 12 and drying roller tube 14 inwalls, drying roller tube is heated, low temperature oil after the heat exchange along the roller inwall to dirty, come together in the drying roller tube bottom, being drawn back oil oven by oil exit pipe 7 by oil pump through oil return mechanism reheats, guaranteed to advance, normally the carrying out of oil extraction circulation, heating part is constant at more than the roller horizontal center line always.The deep fat gas of roller inner chamber enters buffer 19 by the slit between roller and the oil inlet pipe, and be communicated with release with atmosphere through wireway 20, condenser 22, thereby guaranteed that roller is in the normal pressure duty all the time, cold oil comes together in the buffer bottom, is reclaimed via valve.

Claims

1, a kind of constant-pressure and high-temperature energy saving baking roller unit, it is to be formed in parallel by several constant-pressure and high-temperature energy saving baking rollers, it is characterized in that: the oil exit pipe (7) of each drying roller tube (14) is connected with total oil exit pipe (33), oil inlet pipe (15) is connected with total oil inlet pipe (32), on the oil inlet pipe (15) of each drying roller tube (14) by-pass valve control (31) is housed, in each drying roller tube, be communicated with the oil collecting pipe (13) of being with check-valves (11) with oil exit pipe, oil collecting pipe (13) lower end is connected with fixing oil return pipe (25), fixedly establish hole (28) on the tube wall of oil return pipe (35) bottom, port has the bottom end cover (29) of the sealing mouth of pipe, fixedly outside, oil return pipe (25) bottom is set with adjustable pipe (27), adjustable pipe (27) is symmetrically connected with annular ball float (26) by connecting plate (24), and fixedly the bottom end cover of oil return pipe (29) and is used for supporting and the support plate (30) of shutoff adjustable pipe (27) is connected.

2, constant-pressure and high-temperature energy saving baking roller unit according to claim 1 is characterized in that: adjustable pipe (27) connects at least two ball floats (26) by connecting plate (24) symmetry.

3, constant-pressure and high-temperature energy saving baking roller unit according to claim 2, it is characterized in that: fixedly the bottom end cover of oil return pipe (29) is connected with support plate (30) by bolt.