CN201262629Y

CN201262629Y - Ageing oven

Info

Publication number: CN201262629Y
Application number: CNU200820164259XU
Authority: CN
Inventors: 阮其标
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-09-12
Filing date: 2008-09-12
Publication date: 2009-06-24
Anticipated expiration: 2018-09-12

Abstract

An ageing test box is used for the ageing test of materials such as rubber, plastic, PVC and the like. The ageing test box comprises a case with an insulating layer and a gas circulator and is characterized in that the top inner wall of the case is fixed with a liner in a joint way, the left side wall, the rear side wall and the right side wall of which are all provided with through holes; and air channels are arranged between the three side walls and the bottom wall of the liner and the three side inner walls and the bottom inner wall of the case; the gas circulator is arranged in the air channels under the bottom wall of the liner; and the bottom wall of the liner is provided with a circulation air opening; the top of the case is provided with a balance pipe for communicating the space of the liner with the external of the case. The inner chamber of the liner is provided with a shelf and the front side thereof and the case share a case door with the insulating layer. As the case is internally provided with the liner and the air channels are arranged between the liner and the inner wall of the box, the air in the case can flow circularly after the gas circulator is switched on, and the temperature in the ageing test space is uniform, thus ensuring high accuracy of the ageing test of the materials. As a turn plate of the existing ageing test box is omitted in the ageing test box, the work efficiency of the test box is improved and the service life is prolonged.

Description

Ageing oven

Technical field

The utility model relates to a kind ofly can carry out the ageing oven of aging test to materials such as rubber, plastics, PVC in the hot environment of simulation.

Background technology

The existing materials such as rubber, plastics, PVC that are used for carry out the ageing oven of aging test, its structure can be seen from Fig. 7, it comprise a band heat-insulation layer casing 1, be arranged on air inlet 1a on casing one sidewall, one and be used for outside air is sent into blower fan 2 ' in the casing, air heat that can the make inlet heating tube 3 to aging test temperature from air inlet 1a, and be contained in the casing by the rotating disk 4 of motor 6 by mechanical transmission mechanism 5 drives.When using this existing ageing oven, material that earlier will be to be tested is put on the rotating disk 4, starts blower fan 2 ' and motor 6 then; At this moment outside air enters casing 1 from air inlet 1a, and reaches the required temperature of material aging test through heating tube 3 heating; Meanwhile, the heat of rotating disk by air in mechanical transmission mechanism 5 slow rotation, the continuous respiratory box of material to be tested reaches and maintains on the test temperature, observes its aging variation to treat people.The shortcoming of this existing ageing oven is: 1) owing to the uniformity coefficient of aging test to space temperature in the case requires than higher, that is require in the case everywhere temperature uniformity, otherwise will occur different aging conditions on the same material, can't obtain the accurate data of material aging test; For this reason, existing ageing oven is that rotating disk is installed in case, and is even by the temperature that rotating disk reaches on the test material; But not ideal from the effect that experiment showed, rotating disk, this may be dial rotation can't make in the case everywhere air themperature evenly, even also inconsistent along rotating disk each point temperature radially; Therefore the aging test accuracy of this existing ageing oven is also nonconforming; 2) it also brings uncertain or unsafe factor owing to the existence of rotating disk to aging test, and for example different degree of agings also can appear because of the difference of its residing rotating disk radial location in each on same material point; And for example in the start-up course of rotating disk, treat test material not only can be on rotating disk from line slip, change its original position, but also might come out from slippage on the rotating disk; 3) because of rotating disk occupy space in the case large percentage, can be reduced for the space that material carries out aging test, so the work efficiency of ageing oven is lower, and the wearing and tearing and the fault of the zero portion of dial rotation, also can increase the line service amount of chamber.

Summary of the invention

The utility model is to overcome existing shortcoming in the above-mentioned prior art, a kind of ageing oven that can improve the accuracy of current material aging test is provided, and also make it have space availability ratio height simple and reasonable, casing, and characteristics such as safe and reliable, long service life.

The utility model ageing oven, it comprises the casing of a band heat-insulation layer and the circulating fan of a drive, it is characterized in that: fit on the top inwall of casing and fix an inner bag, the left side of inner bag, after, be equipped with one group of through hole on right three sidewalls, and three sidewalls of inner bag and the left side of diapire and casing, after, all leave the air channel between right three side inwalls and the end inwall, its circulating fan is contained in the air channel under the inner bag diapire, and the diapire of inner bag is provided with the circulation air port, the casing top is provided with the balance pipe that can be communicated with the outer heat space of case for the inner bag space, and the front side of inner bag and casing share the chamber door of a band heat-insulation layer, but the inner chamber of inner bag has the shelf of shelf test material.

The utility model ageing oven, the center line of its through hole and the sidewall slope of inner bag, angle between the two is β; And also cushion block can be set between the diapire of inner bag and the diapire of casing.

The beneficial effects of the utility model: 1) because the utility model is provided with inner bag in casing, and be provided with the air channel between wall and the cabinet wall outside the tank, left back right three sidewalls of inner bag are provided with through hole, the diapire of inner bag is provided with the circulation air port, so when circulating fan turns round, just capable of circulation the flowing of air in the case, be that air in the inner bag space enters circulating fan by the circulation air port on its diapire, in this blower fan, improve and promptly change the air channel between the inwall at the bottom of inner bag diapire and the casing behind the blast over to, then respectively along the left side of inner bag, after, the air channel of right three sides makes progress, and by an inner bag left side, after, through hole on right three sidewalls turns back to the inner bag space; After this, the air in inner bag space is pumped out by the circulation air port by circulating fan again, sends into each air channel through the blower fan supercharging, gets back to the inner bag space by the through hole on a left side, back, right three sidewalls again; Along with the commentaries on classics of not stopping transport of circulating fan, above-mentioned air-flow circulation are promptly ceaselessly being carried out, its result makes in the casing, and inner bag space temperature uniformity everywhere particularly just is positioned at the each point temperature uniformity on the aging test material in inner bag space; Thereby guaranteed the pin-point accuracy of aging test; 2) compare with existing ageing oven, the removal of rotating disk not only can improve the utilization factor of test space, just improved the work efficiency of material aging test, but also effectively avoided some the uncertain or even unsafe factors in the test, guarantee the safe reliability of accuracy of experimental results, process of the test; 3) the utility model also alleviates the workload of the ordinary maintenance of chamber because of the minimizing of rotational components, has also prolonged the serviceable life of ageing oven simultaneously.

Description of drawings

Fig. 1 and Fig. 2 are respectively the front view and the vertical views of the utility model ageing oven;

Fig. 3 is the front view after removing the chamber door of ageing oven;

Fig. 4 and Fig. 5 are respectively that A-A cut-open view among Fig. 3 and B are to view;

Fig. 6 is the C-C sectional view among Fig. 5;

Fig. 7 is the structural representation of existing ageing oven.

Label declaration among the figure: 1-casing; The 1a-air inlet; The 1b-chamber door; The 1c-heat-insulation layer; The 1d-hinge; The 2-circulating fan; 2 '-blower fan; The 3-heating tube; The 4-rotating disk; The 5-mechanical transmission mechanism; The 6-motor; The 7-inner bag; The 7a-through hole; 7b-circulation air port; The 7c-balance pipe; The 8-air channel; The 9-shelf; The 10-cushion block; Angle between the center line of β-through hole and the inner bag sidewall.

Embodiment

Embodiment 1, present embodiment ageing oven, its structure can see from Fig. 1～Fig. 4, the casing 1 that it comprises a band heat-insulation layer 1c and a chamber door 1b who is connected with hinge 1d with casing, the circulating fan 2 of a drive; Wherein casing 1 and chamber door 1b all comprise inside and outside two layers of thin steel plate, and have clogged heat-insulation layer 1c between the two layers of thin steel plate; Circulating fan 2 is that buy from the market a kind of sucked wind and exported the centrifugal fan of sending wind from its periphery by its center pit; Present embodiment has been fixed the stainless inner bag 7 of the top inwall applying one of its end face and casing by welding on the inwall of the top of casing 1, this inner bag is the same with casing, also be tetragonal body, be equipped with one group of through hole 7a on its left side, back, right three sidewalls, and these three sidewalls and its diapire leave air channel 8 respectively and between the inner left wall of casing 1, rear side inwall, right side inwall and the end inwall; Its circulating fan 2 is contained in the air channel 8 of outer wall below, the end of inner bag 7, and this diapire is provided with one can be for the circulation air port 7b of the air in the circulating fan suction inner bag, the casing top is provided with one and can (be represented among the figure for the hot-air service tank outside inner bag space and the case, the temperature of hot-air depends on the temperature that material aging test is required) the balance pipe 7c that is communicated with, the front side of inner bag 7 and casing 1 share the chamber door 1b of a band heat-insulation layer 1c, that is to say closing upper chamber door 1b to make the space of the space of inner bag 7 and casing 1 airtight simultaneously, become the heat space of insulation.But the space of inner bag also has the shelf 9 of a shelf test material, and this shelf comprises the horizontal shelf of being erected by four columns in layer (being provided with five horizontal shelf in Fig. 3 altogether).

Above-mentioned balance pipe 7c can directly send into hot-air to inner bag because of being communicated with extraneous hot-air service tank, and it also plays the effect of balance inner bag space air pressure simultaneously.

The area summation of through hole 7a on above-mentioned each sidewall is preferably consistent with the xsect (just with the perpendicular air channel area of airflow direction) in each air channel, and the interior air-flow running resistance of ageing oven reduces, the energy consumption of circulating fan reduces thereby make.Through hole 7a in the present embodiment is the through hole that adopts one group of circle, but it also can adopt the hole of other plane geometric shape, the through hole of a prescription shape for example, or on sidewall, be the horizontal square hole of prolate with several rows of; They all can realize good air-flow round-robin effect.

When using this ageing oven, material that earlier will be to be tested places on the shelf 9, meanwhile, infeeds the desired hot-air of test temperature by balance pipe 7c to inner bag 7; Be actuating motor 6 subsequently, also drive circulating fans 2 by mechanical transmission mechanism 5.Circulating fan is by the air in the circulation air port 7b suction inner bag 7, and promptly enter air channel 8 under inner bag 7 diapires after in circulating fan, boosting, subsequently more respectively the air channel outside the left side of inner bag, back, right three sides 8 upwards and then enter the space of inner bag 7 by the through hole 7a on an inner bag left side, back, right three sidewalls; After this under the effect of circulating fan 2, constantly repeat above-mentioned air-flow circulation again, be that air in the inner bag space is sucked into the air channel 8 under the inner bag diapire, the air channel outside inner bag three sides is upwards, enter the inner bag space by the through hole 7a on three sidewalls respectively more subsequently Ceaselessly running along with circulating fan 2, above-mentioned air circulation process is just constantly being carried out, consequently make cabinet space, inner bag space temperature homogeneous everywhere, after tested, everywhere temperature gap is little in the case does not exceed ± 2 ℃ scope, carry out in the uniform test space of temperature so guarantee the material aging test; Meanwhile, entire test is also because of the good thermal insulation property of casing and chamber door, and circulating fan and inner bag exist together one in the insulation casing that is hedged off from the outer world, and the coupling shaft between circulating fan 2 and the mechanical transmission mechanism 5 and balance pipe 7c is respectively equipped with seal on the casing upstream end, make cabinet space further airtight, so the temperature constant in aging test space.In sum, the accuracy height of the material aging test done of present embodiment ageing oven.

The shelf of present embodiment ageing oven can directly be fixed in the inner bag, and also can adopt and can put it at the trial, and the unfixed structure that can take out immediately of time spent not; Wherein unfixed mode can make the structure of chamber more simple, and also can for example select for use according to the size of test material, the quantity of test material, the severe of test material etc. easily according to the different situations of material.Compare with existing ageing oven, the present embodiment ageing oven strengthens the ratio of the shared cabinet space of test space because of the movement parts of no rotating disk and so on, and process of the test is reliable, the maintenance work amount of chamber reduces, and prolong the serviceable life of chamber.

Embodiment 2, present embodiment ageing oven, its structure can be seen from Fig. 3, Fig. 5 and Fig. 6, different is with embodiment 1 for it: the center line of its through hole 7a is not perpendicular with the sidewall of inner bag, but with tilt perpendicular to the inner bag left side on ground, back, right side wall wall, its inclination angle is the β angle.Compare perpendicular to the through hole of inner bag sidewall with center line, the air flow in through hole that center line tilts and three air channels, the inner bag outside is more approaching, so the resistance of circulating current reduces, the energy consumption of circulating fan can decrease.

Embodiment 3, present embodiment ageing oven, its structure can be seen from Fig. 3, Fig. 4, different is with embodiment 1 and embodiment 2 for it: also cushion block 10 can be set between the end inwall of outer wall and casing at the bottom of the inner bag, thereby strengthen inner bag load-bearing capacity, make ageing oven can be used for the bigger test material of severe relievedly, and do not influence its serviceable life.

Claims

1, a kind of ageing oven, it comprises the casing (1) of a band heat-insulation layer (1c) and the circulating fan (2) of a drive, it is characterized in that: fit on the top inwall of casing (1) and fix an inner bag (7), the left side of inner bag, after, be equipped with one group of through hole (7a) on right three sidewalls, and three sidewalls of inner bag and the left side of diapire and casing, after, all leave air channel (8) between right three side inwalls and the end inwall, its circulating fan (2) is contained in the air channel under the inner bag diapire, and the diapire of inner bag is provided with circulation air port (7b), the casing top is provided with the balance pipe (7c) that can be communicated with the outer heat space of case for the inner bag space, and the front side of inner bag and casing share the chamber door (1b) of a band heat-insulation layer (1c), but the inner chamber of inner bag has the shelf (9) of shelf test material.

2, ageing oven according to claim 1 is characterized in that: the sidewall slope of the center line of said through hole (7a) and inner bag (7), angle between the two is β.

3, ageing oven according to claim 1 is characterized in that: cushion block (10) also can be set between the diapire of said inner bag and the diapire of casing.