Anti-toppling vertical tube furnace of heat treatment equipment

Abstract

The invention relates to the field of heat treatment furnaces, in particular to a heat treatment equipment anti-toppling vertical tube furnace which comprises a furnace body and further comprises an anti-toppling mechanism fixedly installed on the outer wall of the furnace body, the anti-toppling mechanism comprises a groove box fixedly connected with the outer wall of the furnace body, the groove box is vertically arranged, a rectangular groove opening of the groove box is formed towards the outer side of the furnace body, and the groove box is fixedly connected with the outer wall of the furnace body. A groove box is arranged in the furnace body, an inclined plate is arranged at the bottom of the groove box in the inclined lower direction away from the furnace body, an outer sleeve is connected into the groove box in a sleeved mode, the top end of the outer sleeve is hinged to the top of the groove box, an inner sleeve is connected into the outer sleeve in a sleeved mode, and the bottom end of the inner sleeve communicates with the atmosphere. According to the device, when the vertical furnace topples over, the inclination angle of the vertical tube furnace is taken as a triggering condition, and the anti-inclination mechanism can timely pop out to a set angle and is supported on the ground, so that the purpose of supporting and protecting the vertical tube furnace during toppling over is achieved; the problem that in the prior art, collision and toppling risks exist during special operation due to the thin and high appearance structure characteristic of a vertical tube furnace is effectively solved.

Description

Technical Field

[0001] The invention relates to the field of heat treatment furnaces, in particular to an anti-dumping vertical tube furnace of heat treatment equipment. Background Art

[0002] A vertical tube furnace is an electrically heated heat treatment furnace. Taking a cylindrical vertical tube furnace as an example, its most notable feature is that the ratio of the furnace body height to its diameter is relatively large (slim and tall appearance), and the furnace body is divided into two halves by the vertical plane in the middle. A hinge is installed on one side between the two halves of the furnace body, and a locking handle is installed on the other side. When opened, half of the furnace body of the cylindrical vertical tube furnace will be opened, making it more convenient to place heat-treated parts.

[0003] Vertical tube furnaces currently on the market will not tip over under normal circumstances, so usually anti-tipping measures are not specially designed for vertical tube furnaces. However, in actual use, it is found that, especially for medium and large vertical tube furnaces, when placing heavy heat treatment parts, special equipment such as cranes and forklifts are often required, and there is a possibility of accidental contact with the furnace body due to erroneous operation, especially when using a forklift to take or deliver materials to the furnace body. The probability of the fork of the forklift touching the furnace body is very high. The structural characteristics of the vertical tube furnace lead to the risk of the vertical tube furnace tipping over when touched by heavy objects. Therefore, in order to reduce the operating risks of vertical tube furnaces in factories, an anti-tipping vertical tube furnace of heat treatment equipment with an anti-tipping function is proposed. Summary of the invention

[0004] In view of the problem in the prior art that the vertical tube furnace has the danger of being hit and tipped over during special operations due to its slender and tall structural characteristics, the present invention is proposed.

[0005] Therefore, an object of the present invention is to provide a vertical tube furnace that prevents tipping over of a heat treatment device.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: an anti-tilting vertical tube furnace for heat treatment equipment, comprising a furnace body, and also comprising an anti-tilting mechanism fixedly installed on the outer wall of the furnace body, the anti-tilting mechanism comprising a slot box fixedly connected to the outer wall of the furnace body, the slot box is vertically arranged, the rectangular slot of the slot box is arranged toward the outside of the furnace body, and the bottom of the slot box is provided with an inclined plate in an oblique downward direction away from the furnace body, an outer sleeve is sleeved in the slot box, and the top of the outer sleeve is hinged to the top of the slot box, and an inner sleeve is sleeved in the outer sleeve, the bottom end of the inner sleeve is connected to the atmosphere, and a piston is provided in the inner sleeve, and the outer sleeve, the inner sleeve and the piston are filled with gas. Filled with oil liquid, the inner sleeve passes downward through the outer sleeve and is equipped with a roller, and the roller is in contact with the inclined plate; the inner diameter of the upper half of the outer sleeve is larger than the inner diameter of the lower half, and the outer diameter of the inner sleeve is smaller than the small inner diameter of the outer sleeve, the top of the inner sleeve is fixedly connected with a one-way valve group, and the peripheral wall of the one-way valve group is matched and slidably connected with the inner wall of the small inner diameter section of the outer sleeve, the bottom of the outer sleeve is fixedly connected with an annular end cover, and the annular end cover is matched and slidably sleeved with the outer wall of the inner sleeve, the inner sleeve is located between the end cover and the one-way valve group and is sleeved with a tension spring, and the top of the tension spring is fixedly plugged with the outer wall of the inner sleeve, and the bottom of the tension spring is fixedly plugged with the inner wall of the outer sleeve.

[0007] As a preferred solution of the anti-tilting vertical tube furnace of the heat treatment equipment of the present invention, the one-way valve group includes a short ring located at the top end of the inner sleeve, and the top end surface of the short ring is covered and fitted with a circular diaphragm, one side of the diaphragm is fixedly connected to the edge of the top end surface of the short ring, and a circular arc-shaped open metal ring is coaxially inserted in the diaphragm, the diaphragm is located in the metal ring and is thickened, the inner wall of the top of the short ring is provided with an annular groove, and the metal ring is clip-fitted and matched with the annular groove.

[0008] As a preferred solution of the anti-tilting vertical tube furnace of the heat treatment equipment of the present invention, the bottom end of the trough box is provided with a releasing mechanism, which includes a gear box fixedly installed on the outer wall of the trough box, and the output shaft and input shaft of the gear box are both perpendicular to the side wall of the trough box, the end of the input shaft of the gear box is vertically fixedly connected to a swing arm downward, and the bottom end of the swing arm is fixedly connected to a counterweight block.

[0009] As a preferred solution of the anti-tilt vertical tube furnace of the heat treatment equipment of the present invention, wherein: the bottom end of the inner sleeve is fixedly connected with an adapter seat, the adapter seat is located at the bottom edge away from the furnace body and is provided with a slot, a pair of limit blocks are sleeved in the slot, the two limit blocks are connected with double-section connecting rods in opposite directions perpendicular to the inner wall of the slot box, the two sections of the double-section connecting rod are hingedly connected, and the ends of the two double-section connecting rods away from each other are respectively connected to the inner wall of the slot box vertically and rotatably, and are coaxially connected to the output shaft of the gear box, and the ends of the two double-section connecting rods close to each other are meshed.

[0010] As a preferred solution of the anti-tilt vertical tube furnace of the heat treatment equipment of the present invention, wherein: one-way bearings are sleeved on both sides of the top of the outer sleeve, two one-way bearings are coaxially sleeved with a screw, both ends of the screw are vertically fixedly connected to the side wall of the groove box through nuts, the outer ring of the one-way bearing is fixedly sleeved with the outer sleeve through a square key pin, the inner ring of the one-way bearing is fixedly sleeved with the screw through a square key pin, and the allowed rotation direction of the one-way bearing is that the sleeve deflects from the inside of the groove box to the outside of the groove box.

[0011] As a preferred solution of the anti-tilting vertical tube furnace of the heat treatment equipment of the present invention, the top end of the trough box is threadedly connected with a limiting screw.

[0012] As a preferred solution of the anti-tilting vertical tube furnace of the heat treatment equipment of the present invention, the adapter is hinged with a wheel frame, and a torsion spring is arranged between the wheel frame and the adapter, the wheel frame is rotatably connected with the roller, and the movement trend of the wheel frame under the elastic force of the torsion spring is to deflect from the adapter seat located on one side of the furnace body through the bottom of the adapter seat to a direction away from the furnace body.

[0013] As a preferred solution of the anti-tilting vertical tube furnace of the heat treatment equipment of the present invention, wherein: the ratio of the length of the small inner diameter section of the outer sleeve to the length of the large inner diameter section is between 1:4 and 1:5, and the junction between the different inner diameters of the inner wall of the outer sleeve is a smooth transition, the outer sleeve and the inner sleeve are coaxially arranged, and the wire diameter of the tension spring is set so that the tension spring is in matching sliding contact with the inner wall of the small diameter section of the outer sleeve and the outer wall of the inner sleeve.

[0014] As a preferred solution of the anti-tilting vertical tube furnace of the heat treatment equipment of the present invention, wherein: a plurality of oil holes are opened on the circumferential wall of the top end of the inner sleeve, and the plurality of oil holes are evenly spaced and distributed in a spiral path along the circumferential wall of the inner sleeve, and the rotation direction of the spiral distribution of the oil holes is the same as the rotation direction of the tension spring.

[0015] As a preferred solution of the anti-tilting vertical tube furnace of the heat treatment equipment of the present invention, the swing arm includes a screw rod and a screw sleeve rod threadedly connected to each other, and the transmission ratio range of the gear box is that the swing arm drives the gear box input shaft to deflect within fifteen to twenty degrees, and the gear box output shaft drives the double-section connecting rod to rotate within the range of one hundred sixty to two hundred degrees.

[0016] The beneficial effects of the anti-dumping vertical tube furnace of the heat treatment equipment of the present invention are as follows: The vertical tube furnace has an anti-tilt mechanism on its outer wall. When the vertical tube furnace tilts, the anti-tilt mechanism can be promptly ejected outward to a set angle and supported on the ground with the tilt angle of the vertical tube furnace as a trigger condition, so as to achieve the purpose of supporting and protecting the vertical tube furnace during tilting, and effectively solve the problem of the danger of collision and tilting during special operations caused by the thin and tall structural characteristics of the vertical tube furnace in the prior art. The anti-tilt mechanism of the vertical tube furnace uses the increase of spiral density during the contraction process of the tension spring to coordinate the change of the gap between the inner sleeve and the outer sleeve when the inner sleeve pops out, so as to control the inner sleeve to pop out quickly, and can decelerate in time when approaching the dead point of the stroke to avoid impact damage to the device itself; The anti-tilt mechanism of the vertical tube furnace has a special one-way valve group at the top of the inner sleeve, which not only has the advantages of simple structure of ordinary diaphragm one-way valves, but also has a larger oil flow cross-sectional area and lower flow resistance than conventional diaphragm one-way valves when the inner sleeve pops out, and can also avoid the problem of failure of conventional diaphragm one-way valves due to diaphragm deformation during reverse cutoff; The double-section connecting rod, limit block, adapter and its slot in the release mechanism of the vertical tube furnace prevent the anti-tilt mechanism from operating by structural balance force when the vertical tube furnace has not tipped over. When the vertical tube furnace tips over, the angle between the furnace body and the gravity direction is used to trigger unlocking, and the anti-tilt mechanism is released in time to complete the protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 This is a schematic diagram of the overall structure of an anti-tilting vertical tube furnace for heat treatment equipment.

[0019] Figure 2 This is a schematic diagram of the structure of the anti-tilt mechanism of the heat treatment equipment anti-tilt vertical tube furnace after it is triggered.

[0020] Figure 3 It is a schematic diagram of the anti-tilt mechanism structure of the anti-tilt vertical tube furnace of heat treatment equipment in the untriggered state.

[0021] Figure 4 It is a cross-sectional view of the anti-tilt mechanism structure of a heat treatment equipment anti-tilt vertical tube furnace in an untriggered state.

[0022] Figure 5 For heat treatment equipment to prevent vertical tube furnace from tipping over Figure 4 A magnified view of the structure at center.

[0023] Figure 6 This is a structural schematic diagram of the release mechanism of the anti-tilting vertical tube furnace of the heat treatment equipment (oblique upward perspective).

[0024] Figure 7 This is a structural exploded view of the spreading mechanism of the anti-tilting vertical tube furnace of the heat treatment equipment (oblique upward perspective).

[0025] Figure 8 The invention discloses an anti-tilting mechanism of an anti-tilting vertical tube furnace of heat treatment equipment in an untriggered state, including a cross-sectional view of an outer sleeve and an inner sleeve assembly structure.

[0026] Fig. 9 For heat treatment equipment to prevent vertical tube furnace from tipping over Figure 8 A magnified view of the structure at point B.

[0027] Fig.10 For heat treatment equipment to prevent vertical tube furnace from tipping over Figure 8 Enlarged view of the structure at C in the middle.

[0028] Fig.11 It is a structural cross-sectional view of a one-way valve in the anti-tilt mechanism of an anti-tilt vertical tube furnace of heat treatment equipment.

[0029] Fig.12 For heat treatment equipment to prevent vertical tube furnace from tipping over Figure 2 Structural cross-sectional view of the anti-roll mechanism after being triggered.

[0030] Fig.13 For heat treatment equipment to prevent vertical tube furnace from tipping over Fig.12 A magnified view of the structure of D in the middle.

[0031] Fig.14 The present invention is a cross-sectional view of the assembly structure of the inner sleeve, outer sleeve and piston of an anti-dumping vertical tube furnace of heat treatment equipment.

[0032] In the figure: 100, furnace body; 200, anti-tilt mechanism; 201, slot box; 202, outer sleeve; 203, inner sleeve; 204, tension spring; 205, adapter; 206, wheel frame; 207, roller; 208, torsion spring; 209, screw; 210, one-way bearing; 211, limit screw; 213, end cover; 216, one-way valve group; 201a, inclined plate; 203a, oil hole; 205a, slot; 216a, short ring; 216b, diaphragm; 216c, metal ring; 216d, annular groove; 300, release mechanism; 301, gear box; 302, swing arm; 303, counterweight; 304, limit block; 305, double-section connecting rod. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0034] Example 1, reference Figure 1 to Figure 14 , which is the first embodiment of the present invention, provides a vertical tube furnace for preventing tipping of heat treatment equipment, wherein the tipping angle of the vertical tube furnace is used as a trigger condition, wherein the anti-tipping mechanism 200 can be quickly ejected outward, and can achieve the effect of supporting and protecting the vertical tube furnace during tipping, such as Figure 1 and Figure 2 As shown, it includes a furnace body 100 and an anti-tilt mechanism 200 fixedly installed on the outer wall of the furnace body 100 .

[0035] like Figure 2 and Figure 3 As shown, the anti-tilt mechanism 200 includes a slot box 201 fixedly connected to the outer wall of the furnace body 100, the slot box 201 is vertically arranged, the rectangular slot of the slot box 201 is arranged outside the furnace body 100, and the bottom of the slot box 201 is provided with an inclined plate 201a in an oblique downward direction away from the furnace body 100, the slot box 201 is sleeved with an outer sleeve 202, and the top of the outer sleeve 202 is hinged to the top of the slot box 201, as shown in FIG. Fig.14 As shown, the outer sleeve 202 is sleeved with an inner sleeve 203, the bottom end of the inner sleeve 203 is connected to the atmosphere, and a piston 217 is arranged in the inner sleeve 203, and oil is filled between the outer sleeve 202, the inner sleeve 203 and the piston 217. Figure 6 As shown, the inner sleeve 203 passes through the outer sleeve 202 downward and is installed with a roller 207, and the roller 207 is in conflict with the inclined plate 201a; Figure 8 and Fig.10 As shown, the inner diameter of the upper part of the outer sleeve 202 is larger than the inner diameter of the lower part, and the outer diameter of the inner sleeve 203 is smaller than the small inner diameter of the outer sleeve 202. The ratio of the length of the small inner diameter section of the outer sleeve 202 to the length of the large inner diameter section is between 1:4 and 1:5, and the junction between the different inner diameters of the inner wall of the outer sleeve 202 presents a smooth transition.

[0036] like Fig. 9 and Fig.11As shown, a one-way valve group 216 is fixedly connected to the top of the inner sleeve 203, and the peripheral wall of the one-way valve group 216 is matched and slidably connected with the inner wall of the small inner diameter section of the outer sleeve 202, and an annular end cover 213 is fixedly connected to the bottom of the outer sleeve 202, and the annular end cover 213 is matched and slidably sleeved with the outer wall of the inner sleeve 203, and the one-way valve group 216 includes a short ring 216a located at the top of the inner sleeve 203, and the top surface of the short ring 216a is covered and fitted with a circular diaphragm 216b, one side of the diaphragm 216b is fixedly connected to the edge of the top surface of the short ring 216a, and an arc-shaped open metal ring 216c is coaxially inserted in the diaphragm 216b, the diaphragm 216b is thickened in the metal ring 216c, an annular groove 216d is opened on the inner wall of the top of the short ring 216a, and the metal ring 216c is matched with the annular groove 216d by snap-fitting.

[0037] like Figure 8 and Fig.11 As shown, the inner sleeve 203 is located between the end cover 213 and the one-way valve group 216 and is sleeved with a tension spring 204, and the top end of the tension spring 204 is fixedly plugged with the outer wall of the inner sleeve 203, and the bottom end of the tension spring 204 is fixedly plugged with the inner wall of the outer sleeve 202; like Figure 3 As shown, a releasing mechanism 300 is provided at the bottom end of the trough box 201, which includes a gear box 301 fixedly mounted on the outer wall of the trough box 201, and the output shaft and input shaft of the gear box 301 are perpendicular to the side wall of the trough box 201, and the end of the input shaft of the gear box 301 is vertically fixedly connected to a swing arm 302 downward, and the bottom end of the swing arm 302 is fixedly connected to a counterweight block 303, as shown in FIG. Figure 6 and Figure 7 As shown, the bottom end of the inner sleeve 203 is fixedly connected with an adapter seat 205, and the adapter seat 205 is located at the bottom edge away from the furnace body 100 and is provided with a slot 205a, and a pair of limit blocks 304 are sleeved in the slot 205a, and the two limit blocks 304 are connected with a double-section connecting rod 305 in opposite directions perpendicular to the inner wall of the slot box 201, and the two sections of the double-section connecting rod 305 are hingedly connected, and the ends of the two double-section connecting rods 305 away from each other are respectively connected to the inner wall of the slot box 201 vertically and rotatably, and are coaxially connected to the output shaft of the gear box 301, and the ends of the two double-section connecting rods 305 close to each other are meshed.

[0038] Specifically, Figure 5As shown, one-way bearings 210 are sleeved on both sides of the top of the outer sleeve 202, and the two one-way bearings 210 are coaxially sleeved with a screw 209. The two ends of the screw 209 are vertically fixedly connected to the side wall of the slot box 201 through nuts. The outer ring of the one-way bearing 210 is fixedly sleeved with the outer sleeve 202 through a square key pin, and the inner ring of the one-way bearing 210 is fixedly sleeved with the screw through a square key pin, and the allowed rotation direction of the one-way bearing 210 is that the sleeve is deflected from the inside of the slot box 201 to the outside of the slot box 201. The top of the slot box 201 is threadedly connected to a limit screw 211; as shown Figure 6 and Figure 7 As shown, the transfer seat 205 is hinged with a wheel frame 206, and a torsion spring 208 is provided between the wheel frame 206 and the transfer seat 205, and the wheel frame 206 is rotatably connected with the roller 207. The movement trend of the wheel frame 206 under the elastic force of the torsion spring 208 is to deflect from the transfer seat 205 located on one side of the furnace body 100 through the bottom of the transfer seat 205 to a direction away from the furnace body 100; Fig.10 As shown, the outer sleeve 202 and the inner sleeve 203 are coaxially arranged, and the wire diameter of the tension spring 204 is set so that the tension spring 204 is in matching sliding contact with the inner wall of the small diameter section of the outer sleeve 202 and the outer wall of the inner sleeve 203, as shown in FIG. Fig. 9 As shown, a plurality of oil holes 203 a are formed on the top peripheral wall of the inner sleeve 203 , and the plurality of oil holes 203 a are evenly spaced and distributed along the peripheral wall of the inner sleeve 203 in a spiral path, and the spiral direction of the oil holes 203 a is the same as that of the tension spring 204 .

[0039] The working principle and advantages of the device are further explained in combination with the prior art: Since the diameter of the vertical tube furnace is relatively small and the height is relatively high, the conventional vertical tube furnace bracket can only meet the support requirements of the vertical tube furnace under normal operating conditions. When heavy machinery is used to take and feed materials to and from the vertical tube furnace, the vertical furnace is at a high risk of being collided and tipped over. The current production model of the vertical furnace and its bracket is very mature. Changing the size and structure of the bracket will bring about a significant increase in cost and floor space, and it is not possible to operate flexibly. For example, when producing a vertical tube furnace, it is impossible to take into account the future user's use environment, whether the vertical tube furnace is against the wall on one side or multiple sides, and whether there are other equipment around the vertical tube furnace, as well as other similar reasons. As a result, it is difficult to install a fixed bracket with a large enough span and good enough anti-tipping performance for the vertical tube furnace in advance during the production stage. Very few manufacturers assemble brackets that exceed the conventional size for the vertical tube furnace to increase its anti-tipping performance. Therefore, the present invention proposes an anti-tipping vertical tube furnace for heat treatment equipment.

[0040] The present invention mainly proposes an anti-tilt mechanism 200 used on a vertical tube furnace. The anti-tilt mechanism 200 can be flexibly installed at different positions of vertical tube furnaces of different sizes, and the number of assemblies can be flexibly selected, so that the vertical tube furnace equipped with the anti-tilt mechanism 200 can be targetedly set to the required anti-tilt direction according to its use environment. The anti-tilt mechanism 200 of the present invention works in such a way that when the furnace body 100 tilts in the direction in which the anti-tilt mechanism 200 is preset, the release mechanism 300 will use the change in the angle between the inclination angle of the furnace body 100 and the direction of gravity as a trigger condition. When the inclination angle enters the decision angle range of the release mechanism 300, the release mechanism 300 will enter an unlocked state, and the inner sleeve 203, driven by the elastic potential energy of the tension spring 204, will move in a direction toward the outer sleeve 202. The pressure is transmitted from the inner sleeve 203 to the roller 207, and the roller 207 is squeezed on the inclined plate 201a of the trough box 201. Therefore, the component force in the horizontal direction generated by the inclined plate 201a will push the roller 207, the inner sleeve 203 and the outer sleeve 202 out of the trough box 201, and through the inertia effect and the auxiliary effect of the inclination angle of the vertical tube furnace, the inner sleeve 203 is swung outward and popped out of the outer sleeve 202, and the one-way bearing 210 makes the inner sleeve 203 and the outer sleeve 202 have and only deflect to the outside and cannot rebound, and the limit screw 211 at the top of the trough box 201 can be adjusted by adjusting the depth of screwing into the trough box 201 to adjust the maximum swing angle of the inner sleeve 203 and the outer sleeve 202. Figure 2 As shown, the inner sleeve 203 quickly supports the ground to prevent the vertical tube furnace from tipping over.

[0041] To achieve the above functional purpose, the device also involves the following technical details: First, after the inner sleeve 203 and the outer sleeve 202 of the anti-tilt mechanism 200 are swung out, the impact force received when the bottom end of the inner sleeve 203 touches the ground is the greatest, and at the same time, the inner sleeve 203 must be prevented from collapsing into the outer sleeve 202. Therefore, the device is designed with a one-way valve group 216, which is different from the conventional simple one-way valves on the market. There are two types of simple one-way valves on the market. One is to use a spring to pre-press a steel ball in a conical notch, which only allows the fluid to flow from the small opening of the conical notch to squeeze the steel ball and compress the spring, and the reverse direction is cut off. Since the inner sleeve 203 of the device needs to be quickly Pop-up, therefore, if this type of one-way valve is used, the compressed one-way valve spring will consume the energy of the tension spring 204 of the present invention, thereby causing deceleration at the stage where the inner sleeve 203 needs to pop out quickly, and another simple one-way valve is a diaphragm structure, through the diaphragm attached to the small hole, the fluid can only push the diaphragm from the side of the small hole away from the diaphragm to achieve circulation, and the reverse makes the diaphragm closer to the small hole to achieve cut-off, but this type of one-way valve can only be used on small holes with a very small flow cross-sectional area. If the hole diameter is large, the diaphragm will be squeezed into the hole by the liquid pressure and deformed and ineffective. Therefore, if Fig. 9 and Fig.11 As shown, the one-way valve assembly 216 of the device has a tendency to be pushed into the outer sleeve 202 at the moment when the inner sleeve 203 touches the ground. Due to the incompressibility of the internal oil, the pressure between the one-way valve assembly 216 and the outer sleeve 202 increases sharply. Fig. 9 The pressure will squeeze the diaphragm 216b into the inner sleeve 203, and squeeze the open metal ring 216c into the annular groove 216d through the chamfer of the opening edge of the short ring 216a, and make the two ends of the opening of the metal ring 216c contact each other, and the diaphragm 216b is squeezed and clamped in an annular shape through the metal ring 216c and the annular groove 216d, so that the sealing effect of the diaphragm 216b is enhanced while preventing the diaphragm 216b from being pushed into the inner sleeve 203. At the same time, in order to avoid the middle part of the diaphragm 216b from being blown and bursting at the moment of pressurization, the device also thickens the middle part of the diaphragm 216b; Secondly, although the device requires the inner sleeve 203 to be ejected quickly, if the inner sleeve 203 reaches the end of the stroke and cannot be effectively decelerated in time, the inner sleeve 203 will cause a great impact force on the device itself, and the better the ejection speed, the greater the impact force. Therefore, unlike the conventional ejectable sleeve rod, the device abandons the commonly used compression spring and adopts the tension spring 204, such as Fig.10 The outer sleeve 202 is shown with a varying inner diameter, and Figure 8 As shown in the figure, the position of the intersection of the inner diameter change of the outer sleeve 202 shows that, in the first three-quarters of the stroke, the inner diameter of the outer sleeve 202 is relatively large, and at the same time, the pitch of the tension spring 204 in the front stage of contraction is greater than that in the rear stage of contraction. At this time, the spiral density of the tension spring 204 is relatively "sparse", and a large gap is left between the outer wall of the short ring 216a and the inner wall of the outer sleeve 202. Therefore, the oil between the inner sleeve 203 and the outer sleeve 202 can be quickly squeezed to the top area of ​​the inner sleeve 203, and the damping force on the inner sleeve 203 when it pops out is small. In this stroke, the inner sleeve 203 pops out at a faster speed, as shown in FIG. Fig.12As shown, when the inner sleeve 203 enters the last quarter of the stroke, the short ring 216a enters the small inner diameter portion of the outer sleeve 202 and slides against the inner wall of the outer sleeve 202. At this time, the tension spring 204 is about to be completely contracted. The spiral density of the tension spring 204 is relatively high, and the wire diameter of the tension spring 204 is close to the gap width between the outer wall of the inner sleeve 203 and the inner wall of the small diameter section of the outer sleeve 202. Therefore, the oil between the tension spring 204 is forced to flow along the spiral path of the tension spring 204, firstly increasing the flow distance, and secondly constantly changing the flow direction, increasing the flow resistance, and due to the sealing effect of the short ring 216a, this part of the oil can only flow through the smaller oil hole 203a, further increasing the flow resistance, and the flow resistance of this part of the oil continues to increase with the continuous contraction of the tension spring 204, thereby effectively reducing the speed of the inner sleeve 203 popping out in a very short stroke, and preventing the inner sleeve 203 from impacting and damaging the device body when it pops out; Thirdly, the roller 207 of the device is swung to the side of the inner sleeve 203 close to the furnace body 100 through the wheel frame 206, so that the roller 207 is as close to the top of the slope of the inclined plate 201a as possible, so that when the inner sleeve 203 pops out, the roller 207 can roll as long as possible on the slope, thereby providing more thrust for the inner sleeve 203 to swing outward. Figure 2 As shown, before the bottom of the inner sleeve 203 touches the ground, the roller 207 and the wheel frame 206 are deflected to the other side of the adapter 205 by the torsion spring 208, so as to avoid the roller 207 touching the ground and causing unstable support when the bottom end of the inner sleeve 203 touches the ground. The support stability can also be further increased by laying an anti-skid rubber pad in advance at the expected point where the inner sleeve 203 touches the ground.

[0042] Fourth, if Figure 1 and Figure 2 As shown, the device uses a special spreading mechanism 300 that is more suitable for the anti-tilt mechanism 200. When the furnace body 100 tilts, the counterweight 303 remains vertically downward under the action of gravity. During the process, the angle between the swing arm 302 and the furnace body 100 changes. The gear box 301, the slot box 201 and the furnace body 100 are relatively static, so the swing arm 302 is deflected. By adjusting the length of the swing arm 302 and the weight of the counterweight 303, the lever length is increased, and the gravity of the counterweight 303 is transmitted to the gear box 301, and the double-section connecting rod 305 is driven to rotate after the speed change. like Figure 6 , Figure 7 and Fig.13As shown, when the limit block 304 of the double-section connecting rod 305 is sleeved in the slot 205a of the adapter 205, the elastic potential energy of the tension spring 204 transmits a component force to the adapter 205 through the device structure and the inclined plate 201a, so that the adapter 205 squeezes the limit block 304. First, the limit block 304 is fitted in the slot 205a, and second, if the double-section connecting rod 305 is to deflect outward, the two limit blocks 304 will inevitably conflict with each other. Therefore, in the force balance of the above structure, the inner sleeve 2 03 and the outer sleeve 202 are blocked in the slot box 201 and cannot pop out. After the double-section connecting rod 305 is driven to rotate out of the slot 205a, the force balance is broken, so that the rotating seat pushes the double-section connecting rod 305 and then the inner sleeve 203 pops out of the slot box 201; in this embodiment, the recommended angle operation range is that the swing arm 302 drives the input shaft of the gear box 301 to deflect within fifteen to twenty degrees, and the output shaft of the gear box 301 drives the double-section connecting rod 305 to rotate within the range of one hundred sixty to two hundred degrees.

[0043] In summary, when the vertical furnace tips over, the device can use the inclination angle of the vertical tube furnace as a trigger condition, and the anti-tipping mechanism 200 can promptly pop outward to the set angle and support the ground, thereby achieving the purpose of supporting and protecting the tipping vertical tube furnace, and effectively solving the problem in the prior art of the danger of impact and tipping during special operations due to the slender and tall structural characteristics of the vertical tube furnace.

[0044] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A heat treatment equipment anti-tilting vertical tube furnace, comprising a furnace body (100), characterized in that: The invention also comprises an anti-tilt mechanism (200) fixedly mounted on the outer wall of the furnace body (100), the anti-tilt mechanism (200) comprising a slot box (201) fixedly connected to the outer wall of the furnace body (100), the slot box (201) being arranged vertically, the rectangular slot of the slot box (201) being arranged toward the outside of the furnace body (100), and an inclined plate (201a) being arranged at the bottom of the slot box (201) in an oblique downward direction away from the furnace body (100), an outer sleeve (202) being sleeved inside the slot box (201), and the outer sleeve The top of the outer sleeve (202) is hinged to the top of the tank box (201), and the inner sleeve (203) is sleeved inside the outer sleeve (202), the bottom of the inner sleeve (203) is connected to the atmosphere, and a piston (217) is arranged inside the inner sleeve (203), and oil is filled between the outer sleeve (202), the inner sleeve (203) and the piston (217), and the inner sleeve (203) passes downward out of the outer sleeve (202) and is installed with a roller (207), and the roller (207) is in contact with the inclined plate (201a); The inner diameter of the upper half of the outer sleeve (202) is larger than the inner diameter of the lower half, and the outer diameter of the inner sleeve (203) is smaller than the small inner diameter of the outer sleeve (202); the top of the inner sleeve (203) is fixedly connected to a one-way valve group (216), and the peripheral wall of the one-way valve group (216) is matched and slidably connected to the inner wall of the small inner diameter section of the outer sleeve (202); the bottom of the outer sleeve (202) is fixedly connected to an annular end cover (213), and the annular end cover (213) is matched and slidably connected to the outer wall of the inner sleeve (203); the inner sleeve (203) is sleeved with a tension spring (204) located between the end cover (213) and the one-way valve group (216), and the top of the tension spring (204) is fixedly plugged with the outer wall of the inner sleeve (203), and the bottom of the tension spring (204) is fixedly plugged with the inner wall of the outer sleeve (202).

2. The anti-tilting vertical tube furnace for heat treatment equipment according to claim 1, characterized in that: The one-way valve group (216) comprises a short ring (216a) located at the top end of the inner sleeve (203), and the top end surface of the short ring (216a) is covered and fitted with a circular diaphragm (216b), one side of the diaphragm (216b) is fixedly connected to the edge of the top end surface of the short ring (216a), and a circular arc-shaped open metal ring (216c) is coaxially inserted in the diaphragm (216b), the diaphragm (216b) is located in the metal ring (216c) and is thickened, the inner wall of the top of the short ring (216a) is provided with an annular groove (216d), and the metal ring (216c) is snap-fitted and matched with the annular groove (216d).

3. The anti-tilting vertical tube furnace for heat treatment equipment according to claim 2, characterized in that: A spreading mechanism (300) is provided at the bottom end of the trough box (201), comprising a gear box (301) fixedly mounted on the outer wall of the trough box (201), wherein the output shaft and the input shaft of the gear box (301) are both perpendicular to the side wall of the trough box (201), the end of the input shaft of the gear box (301) is fixedly connected to a swing arm (302) vertically downward, and the bottom end of the swing arm (302) is fixedly connected to a counterweight (303).

4. The anti-tilting vertical tube furnace for heat treatment equipment according to claim 3, characterized in that: The bottom end of the inner sleeve (203) is fixedly connected to an adapter seat (205), and a slot (205a) is provided on the bottom edge of the adapter seat (205) which is located away from the furnace body (100). A pair of limit blocks (304) are sleeved in the slot (205a), and two limit blocks (304) are connected to double-section connecting rods (305) in opposite directions and perpendicular to the inner wall of the slot box (201). The two sections of the double-section connecting rod (305) are hingedly connected, and the ends of the two double-section connecting rods (305) that are away from each other are respectively connected to the inner wall of the slot box (201) for vertical rotation and are coaxially connected to the output shaft of the gear box (301), and the ends of the two double-section connecting rods (305) that are close to each other are meshed.

5. The anti-tilting vertical tube furnace for heat treatment equipment according to claim 4, characterized in that: One-way bearings (210) are sleeved on both sides of the top of the outer sleeve (202), and two one-way bearings (210) are coaxially sleeved with a screw (209), and both ends of the screw (209) are vertically fixedly connected to the side wall of the slot box (201) through nuts. The outer ring of the one-way bearing (210) is fixedly sleeved with the outer sleeve (202) through a square key pin, and the inner ring of the one-way bearing (210) is fixedly sleeved with the screw through a square key pin, and the allowed rotation direction of the one-way bearing (210) is that the sleeve deflects from the inside of the slot box (201) to the outside of the slot box (201).

6. The anti-tilting vertical tube furnace for heat treatment equipment according to claim 5, characterized in that: The top end of the trough box (201) is threadedly connected to a limit screw (211).

7. The anti-tilting vertical tube furnace for heat treatment equipment according to claim 6, characterized in that: The transfer seat (205) is hingedly connected to a wheel frame (206), and a torsion spring (208) is provided between the wheel frame (206) and the transfer seat (205). The wheel frame (206) is rotatably connected to the roller (207), and the movement trend of the wheel frame (206) under the elastic force of the torsion spring (208) is to deflect from the transfer seat (205) located on one side of the furnace body (100) through the bottom of the transfer seat (205) in a direction away from the furnace body (100).

8. The anti-tilting vertical tube furnace for heat treatment equipment according to claim 1, characterized in that: The ratio of the length of the small inner diameter section of the outer sleeve (202) to the length of the large inner diameter section is between 1:4 and 1:5, and the junction between the different inner diameters of the inner wall of the outer sleeve (202) presents a smooth transition. The outer sleeve (202) and the inner sleeve (203) are coaxially arranged, and the wire diameter of the tension spring (204) is arranged so that the tension spring (204) is in matching sliding contact with the inner wall of the small diameter section of the outer sleeve (202) and the outer wall of the inner sleeve (203).

9. The anti-tilting vertical tube furnace for heat treatment equipment according to claim 8, characterized in that: A plurality of oil holes (203a) are provided on the peripheral wall at the top end of the inner sleeve (203), and the plurality of oil holes (203a) are distributed at equal intervals along the peripheral wall of the inner sleeve (203) in a spiral path, and the spiral distribution direction of the oil holes (203a) is the same as the spiral direction of the tension spring (204).

10. The anti-tilting vertical tube furnace for heat treatment equipment according to claim 3, characterized in that: The swing arm (302) comprises a screw rod and a screw sleeve rod which are threadedly connected to each other. The gear box (301) has a transmission ratio range of: when the swing arm (302) drives the input shaft of the gear box (301) to deflect within 15 to 20 degrees, the output shaft of the gear box (301) drives the double-section connecting rod (305) to rotate within a range of 160 to 200 degrees.

Images