1. The heat preservation capacity adjusting structure for the temperature calibration furnace is characterized by comprising an upper air door, a lower air door and a transmission rod, wherein the upper air door is installed at the top opening of a furnace core, the lower air door is installed at the bottom opening of the furnace core, the transmission rod is vertically arranged along the direction of the furnace core, and the upper end and the lower end of the transmission wheel are respectively connected with the upper air door and the lower air door;

two driving rods are arranged at the position where the lower air door is connected with the transmission rod, and the two driving rods are respectively connected with the lower air door and the upper air door.

2. The heat insulating ability adjusting structure for the temperature calibration furnace according to claim 1, wherein the lower damper comprises a lower base plate, a plurality of rotating rods and lower blades mounted on the plurality of rotating rods, a meshing cavity is provided at each corner of the lower base plate, a rotating rod is mounted on each edge of the lower base plate, the rotating rod is arranged parallel to the edge where the rotating rod is located, two ends of the rotating rod are respectively inserted into the two meshing cavities, a rotating bevel gear is mounted at each end of the driving rod, and the two rotating bevel gears located in the same meshing cavity are meshed.

3. The thermal insulation capacity adjusting structure for the temperature calibration furnace according to claim 2, wherein the upper damper comprises an upper base plate, a plurality of rotating rods and upper blades mounted on the plurality of rotating rods, a meshing cavity is provided at each corner of the upper base plate, a rotating rod is mounted on each edge of the upper base plate, the rotating rod is arranged parallel to the edge where the rotating rod is located, two ends of the rotating rod are respectively inserted into the two meshing cavities, a rotating bevel gear is mounted at each end of the rotating rod, and the two rotating bevel gears located in the same meshing cavity are meshed.

4. The temperature maintaining capability adjusting structure for the temperature calibration furnace according to claim 3, wherein two driving rods are inserted into one of the engaging cavities of the upper base plate and the lower base plate, respectively, and are connected to the center of the rotation bevel gear of a rotation shaft.

5. The thermal insulation capacity adjusting structure for the temperature calibration furnace according to claim 4, wherein the bottom of the transmission rod extends into the meshing cavity where the driving rod is located, a transmission bevel gear is installed at the bottom of the transmission rod, the transmission bevel gear is meshed with the rotating bevel gear of one of the transmission rods connected with the driving rod, the rotating bevel gear is not installed at one end of the other transmission rod in the meshing cavity, the top of the transmission rod extends into one of the meshing cavities corresponding to the upper substrate and the lower substrate, a transmission bevel gear is installed at the top of the transmission rod, the transmission bevel gear is meshed with the rotating bevel gear of one of the transmission rods in the meshing cavity, and the rotating bevel gear is not installed at one end of the other transmission rod in the meshing cavity.

6. The structure of claim 5, wherein the bevel gear wheel on the top of the driving rod has a threaded adjusting hole, the top of the driving rod has a threaded fixing hole matching the threaded adjusting hole, and the adjusting hole and the threaded fixing hole have adjusting screws.

7. The structure of claim 6, wherein a protective plate is installed outside the engaging cavity, the protective plate seals the engaging cavity, and the protective plate is fixed to the base plate by bolts.

8. The temperature maintaining capability adjusting structure for the temperature calibration furnace according to claim 7, wherein a plurality of the upper blades are disposed to be engaged with each other so as to close the opening at the center of the upper base plate, and a plurality of the lower blades are disposed to be engaged with each other so as to close the opening at the center of the lower base plate.

Background

The dry body furnace is a portable temperature source manufactured by utilizing good heat conduction and heat soaking performance of the solid metal block, has the characteristics of small volume, light weight, high temperature rise and drop speed and the like, and is very suitable for industrial fields and laboratories.

In the use of the dry body furnace, how to realize the temperature control, especially the low temperature control, is a problem which must be faced by the prior art.

Disclosure of Invention

The invention aims to: the heat-insulating capacity adjusting structure for the temperature calibration furnace is exquisite in structure, and can be used for quickly adjusting the heat-insulating capacity of a furnace body, so that the heat-insulating capacity is enhanced at high temperature; and at low temperature, the heat preservation capability is weakened, so that the rapid temperature rise and fall is realized, the working efficiency is greatly improved, and the low-temperature control is easy to realize.

The invention specifically adopts the following technical scheme for realizing the purpose:

a heat preservation capacity adjusting structure for a temperature calibration furnace comprises an upper air door, a lower air door and a transmission rod, wherein the upper air door is installed at the top opening of a furnace core, the lower air door is installed at the bottom opening of the furnace core, the transmission rod is vertically placed along the direction of the furnace core, and the upper end and the lower end of the transmission rod are respectively connected with the upper air door and the lower air door;

two driving rods are arranged at the position where the lower air door is connected with the transmission rod, and the two driving rods are respectively connected with the lower air door and the upper air door.

Through the above-mentioned scheme, through the transmission principle, when needs rapid cooling, rotate through arbitrary actuating lever, the control is opened air door and lower air door, realize rapid cooling, when needs rapid heating up, also rotate through arbitrary actuating lever, the control closes air door and lower air door, reduce the cooling factor, realize rapid heating up, when will realizing low temperature control, if want with temperature control at the lower temperature, because there is the heat preservation of the certain thickness of one deck around the heating chamber, certain heat preservation effect has, be unfavorable for the heat dissipation, if want to realize better accuse temperature effect, heating power and cooling capacity need be balanced, consequently in low temperature control, through opening the air door, reduce the heat preservation ability by a wide margin, thereby optimize the low temperature control effect.

Further, the air door includes infrabasal plate, a plurality of dwang and is in a plurality of down the lower blade of installation on the dwang every angle of infrabasal plate is provided with the meshing chamber, is in simultaneously all install on every edge of infrabasal plate the dwang, the limit setting at its place that the dwang is parallel to, just the both ends of dwang insert respectively in two in the meshing chamber the rotation bevel gear is all installed at the both ends of transfer line down, is located same two in the meshing chamber the rotation bevel gear meshing sets up.

Through the above scheme, the infrabasal plate adopts gear drive's principle for a plurality of rotation bevel gears through intermeshing between a plurality of dwang realize synchronous rotation, can drive the lower blade rotation of installing on it, realize the change to infrabasal plate central opening's size, the angle of opening and shutting of upper and lower air door can linear regulation, is not limited to and opens or close completely, can come the accuse angle of opening and shutting through the actuating lever.

Further, it includes upper substrate, a plurality of dwang and is in a plurality of to go up the air door the last blade of installation on the dwang every angle of upper substrate is provided with the meshing chamber, is in simultaneously the dwang is all installed to every edge of upper substrate, the limit setting at its place that the dwang is parallel to, just the both ends of dwang are inserted respectively in two in the meshing chamber the rotation bevel gear is all installed at the both ends of transfer line, is located same two in the meshing chamber the rotation bevel gear meshing sets up.

Through the scheme, the upper base plate also adopts a gear transmission principle, so that the plurality of rotating rods synchronously rotate through the plurality of rotating bevel gears which are meshed with each other, the upper blades arranged on the rotating rods can be driven to rotate, and the central opening of the upper base plate is closed or opened and closed.

Furthermore, two the actuating lever stretches into respectively the upper substrate reaches in the infrabasal plate one in the meshing chamber, and connect in one the dwang or the dwang the center of rotating bevel gear.

Through the above scheme, when needs cooling down or heat up, drive rather than the dwang of being connected and rotate through rotating the actuating lever, adopt the gear drive principle, through the rotation bevel gear at its both ends, drive all dwangs in whole upper substrate or the infrabasal plate and rotate for the upper leaf or the lower leaf of installation on it, realize going up the sealing or opening and shutting of air door and lower air door.

Furthermore, the bottom of the transmission rod extends into the meshing cavity where the driving rod is located, a transmission bevel gear is installed at the bottom of the transmission rod, the transmission bevel gear is meshed with one of the transmission bevel gears connected with the driving rod and the rotating bevel gear of the rotating rod, the other transmission bevel gear is not installed at one end of the rotating rod in the meshing cavity, the top of the transmission rod extends into the meshing cavity corresponding to the upper substrate and the lower substrate, the transmission bevel gear is installed at the top of the transmission rod, the transmission bevel gear is meshed with the rotating bevel gear of one of the transmission bevel gears in the meshing cavity where the transmission bevel gear is located, and the rotating bevel gear is not installed at one end of the other rotating rod in the meshing cavity.

Through the above scheme, through the transfer line, make when last air door moves with lower air door simultaneously, need not to control two actuating levers, only control an actuating lever can, when an actuating lever is rotated, it drives the dwang rotation rather than being connected, adopt the gear drive principle, through the rotation bevel gear at its both ends, drive all dwangs in whole upper substrate board or the infrabasal plate and rotate, also can drive the transfer line simultaneously and rotate, make it drive the dwang rotation of other end meshing, it rotates to drive all dwangs in its place base plate, thereby realize going up the sealing or opening and shutting of air door and lower air door.

Furthermore, an adjusting threaded hole is formed in the transmission bevel gear at the top of the transmission rod, a fixing threaded hole matched with the adjusting threaded hole is formed in the top of the transmission rod, and adjusting screws are installed in the adjusting hole and the fixing hole.

Through the scheme, when the two air doors do not need to be controlled to act simultaneously, the adjusting screws are screwed out, so that the transmission bevel gear at the top of the transmission rod is separated from the transmission rod, meanwhile, the transmission bevel gear falls down and is disengaged from the rotating bevel gear arranged on the rotating rod of the upper substrate, and then the action of the air door where the transmission bevel gear is located is controlled independently through the two driving rods.

Furthermore, a protection plate is installed on the outer side of the meshing cavity, the protection plate seals the meshing cavity, and meanwhile the protection plate and the base plate where the protection plate is located are fixed through bolts.

Through above-mentioned scheme, the guard plate can protect the gear, prevents unexpected emergence, causes its damage, overhauls it in needs simultaneously, perhaps when changing the engaged state of transfer line, can lift the guard plate off through the bolt.

Furthermore, the upper blades are arranged in a matched mode and can seal the opening in the center of the upper substrate, and the lower blades are arranged in a matched mode and can seal the opening in the center of the lower substrate.

Through above-mentioned scheme, a plurality of upper blades and a plurality of lower blade are the cooperation setting, can be more convenient, and the center to upper substrate and infrabasal plate that optimizes more seals, has promoted its control by temperature change effect.

The invention has the following beneficial effects:

1. the invention has exquisite structure, adopts the principle of gear transmission, can quickly adjust the heat-insulating capacity of the furnace body, and enhances the heat-insulating capacity at high temperature; at low temperature, the heat preservation capability is weakened, so that the rapid temperature rise and fall is realized, the working efficiency is greatly improved, and the low-temperature control is easy to realize;

2. this structure divide into two sets of air doors from top to bottom, and the control by temperature change in-process can use one of them group air door of exclusive use to control, also can two sets of simultaneous control use.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the present invention with the guard plate removed;

FIG. 3 is a schematic view of the assembled damper open configuration of the present invention;

FIG. 4 is a schematic view of the damper closed configuration of the present invention after assembly.

Reference numerals: 11. an upper air door; 12. a transmission rod; 13. a lower substrate; 14. rotating the rod; 15. a lower blade; 16. an engagement cavity; 17. a baffle plate; 18. rotating the bevel gear; 19. a blade mounting base; 20. an upper substrate; 21. an upper blade; 22. a drive rod; 23. a protection plate; 24. a drive bevel gear; 25. adjusting the threaded hole; 26. fixing the threaded hole; 27. adjusting screws; 28. a lower air door; 29. a furnace core.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

As shown in fig. 1 to 4, the present embodiment provides a thermal insulation capacity adjusting structure for a temperature calibration furnace, including an upper damper 11, a lower damper 28 and a transmission rod 12, wherein the upper damper 11 is installed at a top opening of a furnace core 29, the lower damper 28 is installed at a bottom opening of the furnace core 29, the transmission rod 12 is vertically placed along the direction of the furnace core 29, and an upper end and a lower end of the transmission wheel are respectively connected to the upper damper 11 and the lower damper 28.

The lower damper 28 includes a lower base plate 13, four rotation levers 14, and lower blades 15 mounted on the four rotation levers 14, the lower base plate 13 is preferably square, engagement cavities 16 are provided at each corner of the lower base plate 13, the meshing cavity 16 is arranged in a cube shape and is formed by baffle plates 17 which are respectively arranged at four corners of the lower base plate 13 in a downward extending way, meanwhile, the rotating rods 14 are arranged on each edge of the lower substrate 13, the rotating rods 14 are arranged in parallel with the edges where the rotating rods are arranged, and the two ends of the rotating rod 14 respectively penetrate through the baffle plates 17 at the two ends of the edge thereof, and are inserted into the two meshing cavities 16, rotating bevel gears 18 are arranged at two ends of the lower transmission rod 12, two rotating bevel gears 18 in the same meshing cavity 16 are meshed, meanwhile, a blade mounting base 19 is mounted on the rotating rod 14, and the lower blade 15 is mounted on the blade mounting base 19 through a bolt; the lower substrate 13 adopts a gear transmission principle, so that the plurality of rotating rods 14 can synchronously rotate through the plurality of rotating bevel gears 18 which are meshed with each other, the lower blades 15 arranged on the rotating rods can be driven to rotate, the size of the central opening of the lower substrate 13 can be changed, the opening and closing angle of the upper air door and the lower air door can be linearly adjusted, the lower air door is not limited to be completely opened or closed, and the opening and closing angle can be controlled through the driving rod.

The upper damper 11 includes an upper base plate 20, four rotating levers 14, and upper vanes 21 mounted on the four rotating levers 14, the upper base plate 20 is preferably square, an engagement cavity 16 is provided at each corner of the upper base plate 20, the engaging cavity 16 is arranged in a cube shape and is formed by baffle plates 17 which are respectively arranged at four corners of an upper substrate 20 in an upward extending way, meanwhile, the rotating rods 14 are arranged on each edge of the upper substrate 20, the rotating rods 14 are arranged in parallel with the edges where the rotating rods are arranged, and the two ends of the rotating rod 14 respectively penetrate through the baffle plates 17 at the two ends of the edge thereof, and are inserted into the two meshing cavities 16, rotating bevel gears 18 are arranged at two ends of the upper driving rod 12, two rotating bevel gears 18 in the same meshing cavity 16 are meshed, meanwhile, a blade mounting base 19 is mounted on the rotating rod 14, and the upper blade 21 is mounted on the blade mounting base 19 through a bolt; the upper base plate 20 also adopts a gear transmission principle, so that the plurality of rotating rods 14 synchronously rotate through the plurality of rotating bevel gears 18 which are meshed with each other, so as to drive the upper blades 21 arranged on the rotating rods to rotate, and the central opening of the upper base plate 20 is closed or opened and closed.

Two driving rods 22 are disposed at the connection position of the lower damper 28 and the driving rod 12, and the two driving rods 22 respectively extend into one of the meshing cavities 16 of the upper substrate 20 and the lower substrate 13 and are connected to one of the rotating rods 14 or the center of the rotating bevel gear 18 of the rotating rod 14.

Through the transmission principle, the rotating rod 14 connected with the rotating rod is driven to rotate by rotating the driving rod 22, the gear transmission principle is adopted, all the rotating rods 14 in the whole upper base plate 20 or the lower base plate 13 are driven to rotate by the rotating bevel gears 18 at the two ends of the rotating bevel gears, so that the upper blade 21 or the lower blade 15 arranged on the rotating bevel gears are closed or opened and closed to realize the closing or opening of the upper air door 11 and the lower air door 28, when the temperature needs to be quickly reduced, the upper air door 11 and the lower air door 28 are controlled to be opened to realize the quick temperature reduction, when the temperature needs to be quickly increased, the temperature is quickly increased, if the temperature needs to be controlled at a lower temperature, because a heat preservation layer with certain thickness is arranged around the heating cavity, the heat preservation effect is not beneficial to heat dissipation, if the better temperature control effect is needed, the heating capacity and the temperature reduction capacity need to be balanced, therefore, in the low-temperature control, the heat preservation capacity is greatly reduced by opening the air door, so that the low-temperature control effect is optimized.

A protection plate 23 is installed on the outer side of the meshing cavity 16, the meshing cavity 16 is sealed by the protection plate 23, meanwhile, the protection plate 23 and a base plate where the protection plate 23 is located are fixed through bolts, holes for the driving rods 22 to pass through are formed in the protection plates 23 of the two meshing cavities 16 provided with the driving rods 22, the upper blades 21 are arranged in a matched mode, the opening in the center of the upper base plate 20 can be sealed, and meanwhile, the lower blades 15 are arranged in a matched mode, and the opening in the center of the lower base plate 13 can be sealed; the guard plate 23 can protect the gear, prevents unexpected emergence, causes its damage, overhauls it simultaneously in needs, when perhaps changing the engaged state of transfer line 12, can lift the guard plate 23 off through the bolt, and a plurality of upper blades 21 and a plurality of lower blades 15 are the cooperation setting, can be more convenient, and the center to upper substrate 20 and infrabasal plate 13 of optimizing more seals, has promoted its control by temperature change effect.

The bottom of the transmission rod 12 extends into the meshing cavity 16 where the driving rod 22 is located, a transmission bevel gear 24 is installed at the bottom of the transmission rod 12, the transmission bevel gear 24 is meshed with one of the rotation bevel gears 18 of the rotation rods 14 connected with the driving rod 22, the rotation bevel gear 18 is not installed at one end of the other rotation rod 14 in the meshing cavity 16, the top of the transmission rod 12 extends into one of the meshing cavities 16 corresponding to the upper substrate 20 and the lower substrate 13, the transmission bevel gear 24 is installed at the top of the transmission rod 12, the transmission bevel gear 24 is meshed with the rotation bevel gear 18 of one of the rotation rods 14 in the meshing cavity 16 where the transmission bevel gear 24 is located, and the rotation bevel gear 18 is not installed at one end of the other rotation rod 14 in the meshing cavity 16 where the transmission bevel gear 24 is located.

Through the transmission rod 12, when the upper air door 11 and the lower air door 28 act simultaneously, two driving rods 22 do not need to be controlled, only one driving rod 22 is controlled, when one driving rod 22 is rotated, the driving rod drives the rotating rod 14 connected with the driving rod to rotate, the gear transmission principle is adopted, all the rotating rods 14 in the whole upper substrate 20 or the whole lower substrate 13 are driven to rotate through the rotating bevel gears 18 at the two ends of the driving rod, meanwhile, the transmission rod 12 can also be driven to rotate, so that the driving rod 14 meshed with the other end is driven to rotate, all the rotating rods 14 in the substrate where the driving rod is located are driven to rotate, and therefore the upper air door 11 and the lower air door 28 are sealed or opened and closed.

An adjusting threaded hole 25 is formed in a transmission bevel gear 24 at the top of the transmission rod 12, a fixing threaded hole 26 matched with the adjusting threaded hole 25 is formed at the top of the transmission rod 12, and an adjusting screw 27 is installed in the adjusting threaded hole and the fixing threaded hole; when the two dampers do not need to be controlled to act simultaneously, the adjusting screw 27 is screwed out, so that the transmission bevel gear 24 at the top of the transmission rod 12 is separated from the transmission rod 12, meanwhile, the transmission bevel gear 24 falls down and is disengaged from the rotating bevel gear 18 arranged on the rotating rod 14 of the upper substrate 20, and then the action of the damper where the transmission bevel gear is located is controlled independently through the two driving rods 22.