CN209815948U - Shaping furnace and air door opening adjusting device thereof - Google Patents

Abstract

The utility model relates to a design stove and air door aperture adjusting device thereof, the air door sets up in the design stove and divide into two-layer about its cavity, and this design stove air door aperture adjusting device includes: the handle is connected to a plate shaft of the air door, and the plate shaft is rotatably connected to the shaping furnace; the fixing seat is arranged on the shaping furnace; one end of the telescopic assembly is detachably connected to the handle, and the other end of the telescopic assembly is circumferentially and rotatably connected to the fixed seat; and the driving assembly is connected with the telescopic assembly and used for driving the telescopic assembly to move up and down along the shaft, and then the driving handle drives the air door to rotate around the plate shaft so as to adjust the opening degree of the air door. Therefore, an operator can adjust the opening of the air door with high precision by controlling the vertical movement distance of the telescopic assembly, the precision control of the temperature interval in the shaping furnace is realized, and the process requirement of the shaping furnace is met. In addition, this openness adjusting device of air door that this disclosure provided sets up on the design stove, easily changes and overhauls.

Description

Shaping furnace and air door opening adjusting device thereof

Technical Field

The disclosure relates to the field of glass substrate production, in particular to a shaping furnace and an air door opening adjusting device thereof.

Background

In the production process of the glass substrate, ingredients are heated, liquefied, filtered and clarified by a kiln, then flow into a forming production furnace, and are pulled down to form the ultrathin liquid crystal glass substrate in an overflow mode. In the molding procedure, the production furnace comprises a muffle furnace, a shaping furnace and an annealing furnace which are arranged from top to bottom, the glass substrate is pulled down in the overflow of the muffle furnace and pulled down into a plate by a traction mechanism of the annealing furnace, and the thickness stress warping quality of the glass substrate can be precisely controlled by heating equipment in the shaping furnace. In the related art, the air door for dividing the space in the furnace is arranged in the sizing furnace, the space in the furnace is divided into an upper layer and a lower layer by the air door, the process setting of different temperatures of the upper layer and the lower layer in the furnace can be realized by adjusting the opening degree of the air door, and meanwhile, the air door can play a role in controlling the airflow in the furnace, so that the precise adjustment of the opening degree of the air door plays an important role in optimizing the production environment of the sizing furnace.

In the correlation technique, be connected with the bolt on the air door handle that is connected with the air door, a plurality of small round holes that are semicircular and arrange on the steel sheet of design stove oven wall, through the cooperation of bolt and the small round hole of different positions department, can realize the fixed of air door handle. However, because the air door is in a thousands of high-temperature environment, heat is transferred to the air door handle, so that the thermal engagement of the bolt fails, and the opening degree of the air door cannot be adjusted; in addition, in the air door adjustment process, the temperature in the sizing furnace can be influenced when the air door is moved by 1mm, the traditional fixing structure cannot realize millimeter-scale precision adjustment on the opening degree of the air door, and the production environment in the sizing furnace cannot be effectively guaranteed.

SUMMERY OF THE UTILITY MODEL

The first purpose of the disclosure is to provide a setting furnace damper opening adjusting device, which has high adjusting precision, can accurately control the temperature range of a setting furnace, and meets the adjusting requirement of the process.

The second purpose of this disclosure is to provide a design stove, be provided with the air door opening adjusting device that this disclosure provided on this design stove.

In order to achieve the above object, the present disclosure provides a setting furnace damper opening adjusting device, wherein a damper is disposed in a setting furnace and divides a cavity of the setting furnace into an upper layer and a lower layer, the setting furnace damper opening adjusting device includes: the handle is connected to a plate shaft of the air door, and the plate shaft is rotatably connected to the shaping furnace; the fixing seat is arranged on the shaping furnace; one end of the telescopic assembly is detachably connected to the handle, and the other end of the telescopic assembly is circumferentially and rotatably connected to the fixed seat; and the driving assembly is connected with the telescopic assembly and is used for driving the telescopic assembly to move up and down along the shaft so as to drive the handle to drive the air door to rotate around the plate shaft, so that the opening degree of the air door is adjusted.

Optionally, the telescopic assembly comprises a sleeve connected with the fixing seat and a telescopic rod sleeved in the sleeve in a vertically-movable manner, and a hanging buckle used for being detachably connected with the handle is formed at the upper end of the telescopic rod.

Optionally, install the gear on the sleeve, be formed with on the telescopic link along axial extension with gear matched with rack, drive assembly include with the worm that the gear was meshed mutually, will the worm is installed mount on the sleeve periphery wall, and be used for adjusting the worm with the adjusting part of gear fit clearance.

Optionally, the end of the fixing frame is hinged to the peripheral wall of the sleeve, the adjusting member includes a pressing sleeve sleeved at the lower end of the worm, a pressing handle penetrating through a through hole in the pressing sleeve is connected to the peripheral wall of the sleeve, and the axial diameter of the pressing handle is smaller than the aperture of the through hole.

Optionally, the telescopic rod has a threaded rod section, the drive assembly comprises a knob received in a boss of the sleeve and connected to the threaded rod section, a mounting slot is formed in the peripheral wall of the sleeve, and the knob portion projects from the mounting slot.

Optionally, a first circular ring is formed at the lower end of the sleeve, a second circular ring is formed on the fixing seat, and the first circular ring and the second circular ring are sleeved with each other.

Optionally, a ball head is formed on the fixing seat, a ball head seat connected with the ball head is formed at the lower end of the sleeve, the ball head seat comprises a semispherical seat wrapped on the ball head and a connecting seat in butt joint with the semispherical seat, and the semispherical seat and the connecting seat are connected through a fastener.

Optionally, the handle forms into the multistage pole that bends, including connecting epaxial first pole section of board, be used for with the second pole section that telescopic component is connected, and connect first pole section with the third pole section of second pole section, be connected with first fixed cover on the second pole section, be provided with the heat insulating mattress in the first fixed cover.

Optionally, a boss is formed on the first fixing sleeve, the boss has a neck-reducing section, a slot is formed on the hanging buckle, and the slot includes a round hole capable of passing through the boss and a long groove matched with the neck-reducing section.

Optionally, be fixed with the calibrated scale on the design stove, the cover is equipped with the fixed cover of second on the third pole section, form on the fixed cover of second in the vertical direction the pointer of calibrated scale.

According to the second aspect of the disclosure, a setting furnace is also provided, which comprises the setting furnace damper opening adjusting device.

Through the technical scheme, an operator can control the driving assembly to drive the telescopic assembly to move up and down along the shaft, taking the direction shown in fig. 1 as an example, when the telescopic assembly moves up, the handle drives the air doors to rotate clockwise around the plate shaft, and the two air doors move down to increase the opening degree; when the flexible subassembly downstream, the handle drives the air door around the anticlockwise rotation of board axle, and two fans of air doors are upwards in order to reduce the aperture, promptly, can carry out high accuracy adjustment to the air door aperture through the distance of the flexible subassembly up-and-down motion of control, realize the accurate control of the interior temperature interval of design stove, satisfy the technological requirement of design stove. In addition, this openness adjusting device of air door that this disclosure provided sets up on the design stove, easily changes and overhauls.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

fig. 1 is a schematic structural diagram of a setting furnace damper opening degree adjusting device provided in an exemplary embodiment of the present disclosure;

fig. 2 is a side view of a setting furnace damper opening degree adjusting device provided in an exemplary embodiment of the present disclosure;

FIG. 3 is a partially enlarged view of an adjusting member in the setting furnace damper opening adjusting device according to an exemplary embodiment of the present disclosure;

FIG. 4 is a partial enlarged view of a handle position in a setting furnace damper opening adjustment device provided in an exemplary embodiment of the present disclosure;

fig. 5 is a schematic structural diagram of a setting furnace damper opening degree adjusting device according to another exemplary embodiment of the disclosure.

Description of the reference numerals

1 air door 11 plate shaft

2 handle 21 first pole segment

22 second pole segment 23 third pole segment

24 first retainer 240 bosses

25 second fixing sleeve 26 pointer

3 fixing seat 31 second ring

32 ball head 430 slotted hole

4 telescoping assembly 41 sleeve

42 telescopic rod 43 hanging buckle

44 gear 45 rack

421 threaded rod segment 410 boss

411 first ring 412 hemisphere seat

413 connecting seat 414 fastener

5 drive assembly 51 worm

52 fixed frame 53 pressing sleeve

54 compress tightly handle 530 through-hole

55 knob 56 push handle

6 graduated disk 7 glass substrate

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, without being stated to the contrary, the use of the directional words such as "upper" and "lower" generally means that defined in the case of normal installation of the setting furnace damper opening adjustment device provided by the present disclosure, and in particular, with reference to the drawing shown in fig. 1, "inner" and "outer" mean inner and outer of the profile of the corresponding component, and "axial" and "circumferential" mean relative to the axis of the corresponding component. Furthermore, the terms "first," "second," and the like, as used in this disclosure, are intended to distinguish one element from another, and not necessarily for order or importance. In addition, when the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements, unless otherwise indicated.

As shown in fig. 1, the present disclosure provides a setting furnace damper opening adjusting device, wherein a damper 1 is disposed in a setting furnace and divides a cavity thereof into an upper layer and a lower layer, the setting furnace damper opening adjusting device comprises: the air door device comprises a handle 2, a fixed seat 3, a telescopic assembly 4 and a driving assembly 5, wherein the handle 2 is connected to a plate shaft 11 of the air door 1, and the plate shaft 11 is rotatably connected to the sizing furnace; the fixed seat 3 is arranged on the shaping furnace; one end of the telescopic component 4 is detachably connected to the handle 2, and the other end of the telescopic component is connected to the fixed seat 3 in a circumferential rotating manner; drive assembly 5 is connected with flexible subassembly 4, and drive assembly 5 is used for driving flexible subassembly 4 along the up-and-down motion of axle, and then drive handle 2 drives air door 1 and rotates around board axle 11 to the aperture of adjustment air door 1. Here, it should be noted that the air door 1 can be two fans which are arranged in the cavity of the shaping furnace and located at the same height, each air door 1 is connected with the air door opening adjusting device provided by the present disclosure, and an operator can control the air door adjusting devices on both sides simultaneously to adjust the air door opening. Specifically, the damper opening adjusting device provided by the present disclosure enables the damper to have the following three states:

the air door is in a completely closed state, the furnace body needs to go through a one-month heating process when a production line is arranged at the initial stage and the glass substrate is not produced, so that the shaping furnace can reach a corresponding high-temperature state, and during the period, the air door needs to be ensured to be in a closed state to prevent the heat loss of the furnace body from causing equipment damage. The flexible subassembly 4 sets up in the below of handle 2 among the air door aperture adjusting device that this disclosure provided, exerts an ascending lever sled power to handle 2 to the gravity of balanced air door 1 self makes air door 1 be in the horizontality, in addition, can also avoid two air door borders to receive too big extrusion force and interlock through the contact force at two air door 1 borders of position adjustment of adjustment flexible subassembly 4.

The air door is in half-open state, as shown in fig. 1, the air door 1 keeps a certain opening degree, so that the glass substrate 7 flows down from the gap between the two air doors 1.

The air door is in full open mode, and the tip of flexible subassembly 4 carries out detachably with handle 2 and is connected, can realize fast with linking up and the separation of handle 2, when the design stove carries out regular clean maintenance, can adjust to the biggest with the aperture of two air doors 1 rapidly to guarantee lining up of the upper and lower floor cavity of design stove, easy operation is convenient.

Through the technical scheme, an operator can control the driving assembly 5 to drive the telescopic assembly 4 to move up and down along the shaft, taking the direction shown in fig. 1 as an example, when the telescopic assembly 4 moves up, the handle 2 drives the air doors 1 to rotate clockwise around the plate shaft 11, and the two air doors 1 move down to increase the opening degree; when flexible subassembly 4 downstream, handle 2 drives air door 1 around 11 anticlockwise rotations of board axle, two air door 1 upward movement in order to reduce the aperture, promptly, can carry out high accuracy adjustment to air door 1 aperture through the distance of the up-and-down motion of control flexible subassembly 4, realize the interval accurate control of temperature in the design stove, satisfy the technological requirement of design stove. In addition, this openness adjusting device of air door that this disclosure provided sets up on the design stove, easily changes and overhauls.

The retraction assembly 4 may be of any suitable construction. In the present disclosure, as shown in fig. 1 and 5, the telescopic assembly 4 includes a sleeve 41 connected to the fixing base 3, and a telescopic rod 42 sleeved in the sleeve 41 and capable of moving up and down, wherein a hanging buckle 43 for detachably connecting with the handle 2 is formed at an upper end of the telescopic rod 42. The sleeve 41 and the telescopic rod 42 are matched to form a certain gap, the surface of the telescopic rod 42 is subjected to smoothing treatment, and the telescopic rod 42 can be ensured to smoothly slide in the sleeve 41. In other embodiments, balls may be added to the inner wall of the sleeve 41 to increase the smoothness of the sliding of the telescopic rod 42 within the sleeve 41. Hang knot 43 detachably and connect on handle 2, can realize linking up and separating of flexible subassembly 4 and handle 2 fast, easy operation is convenient.

The driving assembly 5 can drive the telescopic rod 42 to move up or down in the sleeve 41 along the axial direction in various ways. As an exemplary embodiment of the present disclosure, as shown in fig. 2, a gear 44 is mounted on the sleeve 41, a rack 45 is formed on the telescopic rod 42 and extends in an axial direction to match with the gear 44, the driving assembly 5 includes a worm 51 engaged with the gear 44, a fixing frame 52 for mounting the worm 51 on an outer circumferential wall of the sleeve 41, and an adjusting member for adjusting a matching gap between the worm 51 and the gear 44. Specifically, the gear 44 is made of carbon steel and is rotatably installed on the sleeve 41, an open slot is formed in the sleeve 41, the gear 44 is matched with the rack 45 on the telescopic rod 42 through the open slot, the worm 51 is installed on the sleeve 41 through the fixing frame 52, and the gear 44 can be driven to rotate by driving the worm 51 to rotate, so that the telescopic rod 42 is driven to move up and down. When the worm 51 rotates one circle, the gear 44 moves forward one tooth, so that the position of the telescopic rod 42 can be slightly changed, and the opening degree of the air door 1 can be accurately adjusted.

Further, in the present disclosure, as shown in fig. 3, an end of the fixing frame 52 is hinged to the outer circumferential wall of the sleeve 41, the adjusting member includes a pressing sleeve 53 fitted over the lower end of the worm 51, a pressing handle 54 connected to the outer circumferential wall of the sleeve 41 through a through hole 530 on the pressing sleeve 53, and an axial diameter of the pressing handle 54 is smaller than an aperture of the through hole 530. Specifically, the end of the fixing frame 52 is hinged to the sleeve 41, a boss is formed at the upper end of the worm 51 and penetrates through a through hole in the fixing frame 52, a snap spring (not shown in the figure) is mounted on the boss, the upper end of the worm 51 can be limited on the fixing frame 52, and the lower end of the worm is fixed through a pressing sleeve 53 and a pressing handle 54, so that the worm 51 and the gear 44 are meshed. The worm 51 penetrates through a through hole in the pressing sleeve 53, the pressing handle 54 penetrates through another through hole 530 in the pressing sleeve 53, the two through holes are vertically arranged, the diameter of the through hole 530 can be 6-8mm, the pressing handle 54 is of a T-shaped structure, and the pressing handle penetrates through the through hole 530 and is connected to the fixing block in a threaded mode. In addition, because the telescopic assembly 4 is located outside the shaping furnace and can be influenced by high temperature, assembly gaps among all parts can be changed, in order to ensure the assembly gaps between the gear 44 and the worm 51, the worm 51 can flexibly drive the gear 44, the shaft diameter of the pressing handle 54 is smaller than the hole diameter of the through hole 530, when the assembly gaps between the worm 51 and the gear 44 are adjusted, the worm 51 rotates around a hinge point, the included angle between the worm 51 and the pressing handle 54 can be changed, so that the worm 51 cannot be clamped by the pressing sleeve 53, the included angle between the worm 51 and the pressing handle 54 can be adjusted within the range of 85-95 degrees, the worm 51 and the gear 44 keep a proper distance, and the up-and-down movement of the telescopic rod 42 can be adjusted and driven more smoothly. In addition, after the telescopic rod 42 is adjusted to a proper position, the pressing handle 54 is screwed into the fixing block, so that the assembly clearance between the gear 44 and the worm 51 is reduced, and the gear 44 and the worm 51 have a certain self-locking function, so that the position of the air door 1 is fixed.

As another exemplary embodiment of the present disclosure, as shown in fig. 5, the telescopic rod 42 has a threaded rod section 421, the driving assembly 5 includes a knob 55 received in the boss 410 of the sleeve 41 to be coupled to the threaded rod section 421, a mounting groove is formed on an outer circumferential wall of the sleeve 41, and a portion of the knob 55 protrudes from the mounting groove. In this embodiment, the shapes of the sleeve 41 and the telescopic tube 42 are not limited, and may be cylindrical steel or bar-shaped steel, the cavity of the protruding portion 410 may accommodate and limit the knob 55, the mounting groove is formed on the protruding portion 410, for example, the knob 55 may be wrapped by the left and right sides of the protruding portion 410, the front and rear knobs 55 may extend out from the mounting groove, and the operator may dial the knob 55, so as to drive the telescopic rod 42 to move up and down relative to the sleeve 41, and may perform a related design on the thread density of the threaded rod section 421, the higher the thread density is, the smaller the telescopic amount of the telescopic rod 42 generated by one rotation of the knob 55 is, and the higher the adjustment precision is. In addition, after the adjustment is completed, in order to fix the knob 55, a tightening handle 56 penetrating through the protruding portion 410 and abutting against the knob 55 is further included, and when the adjustment is needed, the tightening handle 56 is loosened to pull the knob 55.

The telescopic assembly 4 and the fixed seat 3 can rotate circumferentially in various connection modes. As an exemplary embodiment of the present disclosure, as shown in fig. 3, a first ring 411 is formed at a lower end of the sleeve 41, a second ring 31 is formed on the fixing base 3, and the first ring 411 and the second ring 31 are sleeved with each other. As shown in fig. 2, the fixing seat 3 can be a U-shaped structure and fixed on the edge of the shaping furnace through bolts, the furnace body of the shaping furnace is of a splicing structure from top to bottom, a convex edge for assembling and connecting bolts can be left at the splicing position, and the fixing seat 3 is installed on the shaping furnace through the convex edge. Fixing base 3 and sleeve 41 can be heat-resisting stainless steel respectively, and first ring 411 and second ring 31 cup joint together, and cup joint the clearance less, adopt this connected mode, can realize that the removal is moved and the back-and-forth movement about flexible subassembly 4, realize more easily being connected with handle 2, make flexible subassembly 4 more nimble with the connected mode of handle 2, realize the flexonics of both, and do not receive the influence of high temperature.

As another exemplary embodiment of the present disclosure, as shown in fig. 5, a ball head 32 is formed on the fixing base 3, a ball head base connected to the ball head 32 is formed at a lower end of the sleeve 41, the ball head base includes a half ball base 412 wrapped on the ball head 32 and a connecting base 413 butted against the half ball base 412, and the half ball base 412 and the connecting base 413 are connected by a fastener 414. The bulb 32 is accommodated in the cavity formed by the hemispherical seat 412 and the connecting seat 413, the connecting seat 413 is formed in a circular ring shape, the diameter of the upper circular surface is larger than that of the bulb 32, the diameter of the lower circular surface is smaller than that of the bulb 32, connecting lug plates are respectively formed on two sides of the hemispherical seat 412 and the connecting seat 413, and the connecting lug plates are connected through a fastening piece 414, such as a locking screw, so that the bulb 32 is used as the center, the telescopic assembly 4 can be adjusted in multiple angles, and the connection and the assembly with the handle 2 are facilitated. In addition, because the telescopic assembly 4 is movably connected with the handle 2 and the fixed seat 3, when the telescopic amount of the telescopic assembly 4 is adjusted, an operator can hold the sleeve 41 with hands, so that the air door 1 is kept stable.

Further, in the present disclosure, as shown in fig. 4, the handle 2 may be formed as a multi-segment bending rod, which includes a first rod segment 21 connected to the plate shaft 11, a second rod segment 22 connected to the telescopic assembly 4, and a third rod segment 23 connecting the first rod segment 21 and the second rod segment 22, wherein the second rod segment 22 is connected to a first fixing sleeve 24, and a heat insulating pad, such as a gasket made of heat insulating material, is disposed in the first fixing sleeve 24, so that the joint between the telescopic assembly 4 and the handle 2 is heat-insulated to prevent the telescopic assembly 4 from being damaged due to high temperature conduction.

As shown in fig. 4 and 5, the first fixing sleeve 24 is formed with a boss 240, the boss 240 has a neck-down section, the hanging buckle 43 is formed with a slot 430, and the slot 430 includes a round hole capable of passing through the boss 240 and a long groove matched with the neck-down section. The first fixing sleeve 24 is fixed by a bolt which passes through the first fixing sleeve 24 and abuts against the second rod section 22, the hanging buckle 43 can be hung on the boss 240 through a circular hole, the neck-reducing section of the boss 240 can slide into a thinner part along the long strip groove, the hanging buckle 43 is prevented from falling off from the boss 240, and the telescopic component 4 is stably connected with the handle 2; when the connection between the two is needed to be disconnected, the hanging buckle 43 can be separated from the boss 240 only by pressing down the second rod section 22.

As shown in fig. 4, the calibration scale 6 is fixed on the sizing furnace, the third rod section 23 is sleeved with a second fixing sleeve 25, and a pointer 26 pointing to the calibration scale 6 is formed on the second fixing sleeve 25. The dial 6 is distributed with a right-angle fan-shaped dial gauge, when the handle 2 rotates, the pointer 26 can indicate a certain angle value on the dial 6 to indicate the opening value of the air door 1, the opening of the air door 1 is digitized and accurate, and the accuracy of adjusting the opening of the air door is further ensured.

According to a second aspect of the present disclosure, there is also provided a sizing oven comprising the sizing oven damper opening adjustment device described above. The shaping furnace has all the beneficial effects of the shaping furnace damper opening adjusting device, and redundant description is not repeated here.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims (11)

1. The utility model provides a setting stove throttle opening adjusting device, throttle (1) set up in the setting stove and divide into two-layer about its cavity, its characterized in that, setting stove throttle opening adjusting device includes:

the handle (2) is connected to a plate shaft (11) of the air door (1), and the plate shaft (11) is rotatably connected to the sizing furnace;

the fixing seat (3) is arranged on the shaping furnace;

one end of the telescopic component (4) is detachably connected to the handle (2), and the other end of the telescopic component is circumferentially and rotatably connected to the fixed seat (3); and

drive assembly (5), with flexible subassembly (4) are connected, drive assembly (5) are used for the drive flexible subassembly (4) are along the up-and-down motion of axle, and then the drive handle (2) drive air door (1) wind board axle (11) rotate, in order to adjust the aperture of air door (1).

2. The setting furnace throttle opening degree adjusting device according to claim 1, characterized in that the telescopic assembly (4) comprises a sleeve (41) connected with the fixed seat (3) and a telescopic rod (42) sleeved in the sleeve (41) in a vertically movable manner, and a hanging buckle (43) detachably connected with the handle (2) is formed at the upper end of the telescopic rod (42).

3. The setting furnace damper opening degree adjusting device according to claim 2, characterized in that a gear (44) is installed on the sleeve (41), a rack (45) which extends along the axial direction and is matched with the gear (44) is formed on the telescopic rod (42), the driving assembly (5) comprises a worm (51) which is meshed with the gear (44), a fixing frame (52) which is used for installing the worm (51) on the peripheral wall of the sleeve (41), and an adjusting piece which is used for adjusting the matching clearance between the worm (51) and the gear (44).

4. The setting furnace damper opening adjusting device according to claim 3, wherein the end of the fixing frame (52) is hinged on the peripheral wall of the sleeve (41), the adjusting member comprises a pressing sleeve (53) sleeved on the lower end of the worm (51), a pressing handle (54) connected on the peripheral wall of the sleeve (41) through a through hole (530) on the pressing sleeve (53), and the axial diameter of the pressing handle (54) is smaller than the aperture of the through hole (530).

5. The setting furnace damper opening adjustment device according to claim 2, characterized in that the telescopic rod (42) has a threaded rod section (421), the driving assembly (5) comprises a knob (55) received in the boss (410) of the sleeve (41) and connected to the threaded rod section (421), a mounting groove is formed on the outer circumferential wall of the sleeve (41), and the knob (55) partially protrudes from the mounting groove.

6. The setting furnace damper opening degree adjusting device according to claim 2, characterized in that a first circular ring (411) is formed at the lower end of the sleeve (41), a second circular ring (31) is formed on the fixed seat (3), and the first circular ring (411) and the second circular ring (31) are sleeved.

7. The setting furnace throttle opening adjusting device according to claim 2, characterized in that a ball head (32) is formed on the fixed base (3), a ball head seat connected with the ball head (32) is formed at the lower end of the sleeve (41), the ball head seat comprises a half ball seat (412) wrapped on the ball head (32) and a connecting seat (413) butted with the half ball seat (412), and the half ball seat (412) and the connecting seat (413) are connected through a fastener (414).

8. The setting furnace damper opening adjustment device according to any one of claims 2-7, characterized in that the handle (2) is formed as a multi-segment bending rod, comprising a first rod segment (21) connected to the plate shaft (11), a second rod segment (22) for connecting with the telescopic assembly (4), and a third rod segment (23) connecting the first rod segment (21) and the second rod segment (22), wherein a first fixing sleeve (24) is connected to the second rod segment (22), and wherein a heat insulation pad is arranged in the first fixing sleeve (24).

9. The setting furnace damper opening adjusting device according to claim 8, characterized in that a boss (240) is formed on the first fixing sleeve (24), the boss (240) has a necking section, a slotted hole (430) is formed on the hanging buckle (43), and the slotted hole (430) comprises a round hole capable of passing through the boss (240) and a long groove matched with the necking section.

10. The setting furnace damper opening adjusting device according to claim 8, characterized in that a dial (6) is fixed on the setting furnace, a second fixing sleeve (25) is sleeved on the third rod section (23), and a pointer (26) pointing to the dial (6) vertically is formed on the second fixing sleeve (25).

11. A sizing furnace, characterized by comprising a sizing furnace damper opening degree adjusting device according to any one of claims 1 to 10.