Vacuum heat treatment furnace with adjustable furnace door

Abstract

The utility model discloses a vacuum heat treatment furnace with an adjustable furnace door, belongs to the technical field of sintering equipment, and aims to solve the problem of how to adjust the furnace door to improve the sealing performance of a furnace body. The vacuum heat treatment furnace with the adjustable furnace door comprises a furnace body, the furnace door, a connecting lug, an adjusting bolt and an adjusting screw rod, the furnace body is provided with a rotating shaft which extends vertically; one end of the connecting lug is provided with a hinge shaft and is rotatably connected with the furnace door through the hinge shaft, the other end of the connecting lug is provided with a shaft sleeve and sleeves the outer side of the rotating shaft through the shaft sleeve, and a movable gap is formed between the shaft sleeve and the rotating shaft; the adjusting bolts are distributed at the two ends of the shaft sleeve, the adjusting bolts are perpendicular to the shaft sleeve and connected with the shaft sleeve in a threaded mode, and one ends of the adjusting bolts extend into the shaft sleeve and lock the rotating shaft so as to fix the relative positions of the rotating shaft and the shaft sleeve. One end of the adjusting screw rod is rotatably connected with the furnace door, and the other end of the adjusting screw rod penetrates through the connecting lug and is locked on the connecting lug through a nut.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sintering equipment, in particular to a furnace door adjustable vacuum heat treatment furnace. BACKGROUND

[0002] In the existing vacuum heat treatment furnace equipment, such as a sintering furnace, the connection structure of the furnace door and the furnace body is a key factor to ensure the sealing performance of the vacuum heat treatment furnace. At present, the connection structure of the furnace door and the furnace body of the vacuum heat treatment furnace mainly has two main types: one is a hinge connection method, which is suitable for smaller vacuum heat treatment furnaces; the other is a movable design, which is usually used for larger vacuum heat treatment furnaces to facilitate the convenient installation and disassembly of the furnace door and heating elements and other components.

[0003] In the hinge connection method, the furnace door is connected to the furnace body through a hinge, and the furnace door can be opened sideways to facilitate the entry and exit of materials and operation. However, the existing hinge connection structure has the problem that the furnace door cannot be adjusted at multiple angles relative to the furnace body to achieve the close fit of the furnace door to the furnace body in actual application. Specifically, since the vacuum heat treatment furnace works in a high-temperature and high-pressure environment, the sealing performance between the furnace door and the furnace body is crucial. However, due to the limitation of the connection structure of the furnace door and the furnace body, the furnace door often cannot be completely closed to the furnace body when closed, resulting in a decrease in sealing performance, thereby affecting the working efficiency and product quality of the vacuum heat treatment furnace.

[0004] Specifically, in the hinge connection method, the relative positions of the furnace body, the shaft and the furnace door are usually fixed and cannot be adjusted at multiple angles before use. This results in the problem that when the furnace door is closed but there is a small gap between the furnace door and the furnace body, the furnace door cannot be adjusted to fit the furnace body, thereby affecting the sealing performance.

[0005] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present disclosure, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. CONTENT OF THE UTILITY MODEL

[0006] (I) Technical problem to be solved

[0007] The present application provides a furnace door adjustable vacuum heat treatment furnace, which can solve the problem of how to adjust the furnace door to improve the sealing performance of the furnace body in the prior art.

[0008] (II) Technical scheme

[0009] To solve the above technical problems, the present application provides the following technical scheme:

[0010] A furnace door adjustable vacuum heat treatment furnace is provided, which comprises a furnace body, a furnace door, a connecting lug, an adjusting bolt and an adjusting screw.

[0011] The furnace door is arranged on one side of the furnace body and is horizontally opened and closed;

[0012] One side of the furnace body is provided with a vertical rotating shaft;

[0013] One end of the connecting lug is provided with a hinged shaft and is rotatably connected with the furnace door through the hinged shaft, and the other end is provided with a shaft sleeve, which is sleeved outside the rotating shaft, and the shaft sleeve and the rotating shaft have a movable gap therebetween;

[0014] The adjusting bolts are provided in plurality and are distributed at both ends of the shaft sleeve, the adjusting bolts are perpendicularly and threadedly connected with the shaft sleeve, one end of the adjusting bolt extends into the shaft sleeve and locks the rotating shaft to fix the relative position of the rotating shaft and the shaft sleeve;

[0015] One end of the adjusting screw is rotatably connected with the furnace door, and the other end penetrates through the connecting lug and is locked on the connecting lug through a nut.

[0016] In some embodiments, one side of the furnace body is fixedly provided with a connecting seat, and the rotating shaft is rotatably installed on the connecting seat.

[0017] In some embodiments, two shaft seats are fixedly arranged on one side of the furnace door away from the furnace body, and each of the two shaft seats is provided with a pin shaft; the hinged shaft is located between the two shaft seats and is rotatably connected with the two pin shafts at both ends.

[0018] In some embodiments, the inner diameter of the shaft sleeve is 1mm to 5mm larger than the outer diameter of the rotating shaft.

[0019] In some embodiments, four adjusting bolts are arranged at each end of the shaft sleeve.

[0020] In some embodiments, the adjusting bolts located at the same end of the shaft sleeve are equally spaced around the central axis of the shaft sleeve.

[0021] In some embodiments, a hinged seat is fixedly arranged on one side of the furnace door away from the furnace body, and one end of the adjusting screw is rotatably connected with the hinged seat through a pin shaft.

[0022] In some embodiments, the connecting lug is provided with a through hole, the inside of the through hole is provided with a mounting cylinder, one end of the mounting cylinder is provided with an annular rim extending outward, the annular rim is connected with the connecting lug through a bolt, the other end of the mounting cylinder is provided with a bottom plate extending inward, the bottom plate is provided with a clearance hole, and one of the nuts is arranged on both sides of the clearance hole; the adjusting screw penetrates through the through hole and the clearance hole and is locked on the bottom plate through the nut.

[0023] In some embodiments, a cover is detachably arranged on the connecting lug, and the cover covers one end of the screw away from the furnace door.

[0024] (III) Beneficial Effects

[0025] Compared with the prior art, the technical scheme provided by the embodiments of the present application has at least the following beneficial effects:

[0026] The furnace door adjustable vacuum heat treatment furnace of the present application can adjust the position of the furnace door before use, so that the fit of the furnace door and the furnace body is better. Specifically, during adjustment, first loosen the adjusting bolts, so that the shaft sleeve can move up and down along the rotating shaft, thereby adjusting the height of the furnace door; since the shaft sleeve and the rotating shaft have a movement gap, the shaft sleeve can be inclined relative to the rotating shaft, thereby changing the inclination of the furnace door; finally, lock the adjusting bolts to fix the relative position of the shaft sleeve and the rotating shaft after adjustment. The furnace door adjustable vacuum heat treatment furnace of the present application can also adjust the furnace door through a screw, specifically, by rotating the nut to fix the furnace door at different positions of the screw, so that the furnace door rotates around the hinge shaft, thereby changing the angle of the furnace door. Through the above adjustment, the furnace door can fit the furnace body better, reducing the gap between the two, thereby improving the fit and sealing. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0028] Figure 1 is a perspective view of the furnace door adjustable vacuum heat treatment furnace in the embodiments of the present application;

[0029] Figure 2 is a front view of the furnace door adjustable vacuum heat treatment furnace in the embodiments of the present application;

[0030] Figure 3 is Figure 2 a partial sectional view of section A in

[0031] Figure 4 is a sectional view of the connection between the rotating shaft and the shaft sleeve in the embodiments of the present application.

[0032] Reference signs:

[0033] furnace body 1, rotating shaft 11, connecting seat 12, lug seat 121, bearing 13;

[0034] furnace door 2, shaft seat 21, shaft hole 211, pin shaft 212, hinge seat 22;

[0035] Connecting lug 3, hinge shaft 31, shaft sleeve 32, movable gap 33, through hole 34, mounting cylinder 35, annular rim 351, bottom plate 352, cover 36;

[0036] Adjusting bolt 4;

[0037] Adjusting screw 5, nut 51.

[0038] The specific embodiments of the present application have been shown and described in the above drawings, which will be described in more detail hereinafter. These drawings and the written description are not intended to restrict the scope of the present application concept in any way, but to illustrate the present application concept to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical scheme and advantages of the present application more clear, the embodiments of the present application will be described in more detail below with reference to the drawings.

[0040] The technical scheme of the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0041] In the hinge connection mode of the existing furnace door of the vacuum heat treatment furnace, the relative positions of the hinge seat, the rotating shaft and the furnace door are usually fixed, and cannot be fine-adjusted at multiple angles before use. This leads to the fact that when the furnace door is closed but there is a small gap between the furnace door and the furnace body, the furnace door cannot be adjusted to fit the furnace body, thereby affecting the sealing performance.

[0042] To solve the above technical problems, the present embodiment provides a vacuum heat treatment furnace with an adjustable furnace door. Referring to Figures 1 to 4 shown, Figure 1 is a perspective view of the vacuum heat treatment furnace with an adjustable furnace door in the embodiments of the present application, Figure 2 is a front view of the vacuum heat treatment furnace with an adjustable furnace door in the embodiments of the present application, Figure 3 is Figure 2 is a partial cross-sectional view of section A in Figure 4 is a cross-sectional view of the connection between the rotating shaft and the shaft sleeve in the embodiments of the present application.

[0043] The vacuum heat treatment furnace with an adjustable furnace door comprises a furnace body 1, a furnace door 2, a connecting lug 3, an adjusting bolt 4 and an adjusting screw 5.

[0044] The furnace door 2 is arranged on one side of the furnace body 1 and is horizontally opened and closed.

[0045] One side of the furnace body 1 is provided with a vertically extending rotating shaft 11, which is used to mount the connecting lug 3.

[0046] The connecting ear 3 is provided with a hinge shaft 31 at one end, and is rotatably connected with the furnace door 2 through the hinge shaft 31. The other end is provided with a shaft sleeve 32, and is sleeved outside the rotating shaft 11 through the shaft sleeve 32. The shaft sleeve 32 and the rotating shaft 11 have a movable gap 33 therebetween. The movable gap 33 allows the shaft sleeve 32 to be lifted and tilted relative to the rotating shaft 11 in an unfixed state, so as to adjust the relative position of the shaft sleeve 32 and the rotating shaft 11.

[0047] The adjusting bolt 4 is provided with a plurality of adjusting bolts 4, which are distributed at both ends of the shaft sleeve 32. The adjusting bolt 4 is perpendicular to and screw-connected with the shaft sleeve 32. One end of the adjusting bolt 4 extends into the shaft sleeve 32 and locks the rotating shaft 11, so as to fix the relative position of the rotating shaft 11 and the shaft sleeve 32.

[0048] The adjusting screw 5 is rotatably connected with the furnace door 2 at one end, and the other end penetrates through the connecting ear 3 and is locked on the connecting ear 3 through a nut 51. In this way, the adjusting screw 5 can be connected with the connecting ear 3 at different positions through the nut 51, so as to change the angle of rotation of the furnace door 2 around the hinge shaft 31.

[0049] The above-mentioned furnace body 1 can be provided with the rotating shaft 11 in the following manner: a connecting seat 12 is fixed on the side of the furnace body 1 by welding or bolt connection. The rotating shaft 11 is rotatably installed on the connecting seat 12. Illustratively, the connecting seat 12 is provided with a pair of upper and lower ear seats 121. The upper ear seat 121 is connected with the connecting seat 12 through a bolt 122, which can be disassembled during installation, so as to facilitate the installation of the rotating shaft 11 on the lower ear seat 121 and the installation of the shaft sleeve 32 on the rotating shaft 11. The two ends of the rotating shaft 11 can be connected with the two ear seats 121 through bearings 13.

[0050] Illustratively, the connecting ear 3 is provided with the hinge shaft 31 by welding. The upper and lower ends of the hinge shaft 31 are exposed to the main body of the connecting ear 3.

[0051] In one embodiment in which the hinge shaft 31 is rotatably connected with the furnace door 2, two shaft seats 21 are welded on the side of the furnace door 2 away from the furnace body 1. The shaft seats 21 are provided with shaft holes 211. The shaft holes 211 are provided with pin shafts 212. The hinge shaft 31 is located between the two shaft seats 21. The two ends of the hinge shaft 31 are connected with the pin shafts 212 through blind holes 213, so that the furnace door 2 can rotate around the pin shafts 212.

[0052] The size of the above-mentioned movable gap 33 can be designed according to the adjustment range of the furnace door 2. The larger the movable gap 33 is, the larger the adjustment range of the furnace door 2 is. Illustratively, the inner diameter of the shaft sleeve 32 is 1mm to 5mm larger than the outer diameter of the rotating shaft 11.

[0053] The number of the above-mentioned adjusting bolts 4 needs to ensure that the relative position of the rotating shaft 11 and the shaft sleeve 32 can be fixed. Illustratively, four adjusting bolts 4 are provided at both ends of the shaft sleeve 32.

[0054] Further, the adjusting bolts 4 at the same end of the sleeve 32 are distributed equidistantly around the central axis of the sleeve 32. For example, four adjusting bolts 4 are arranged at each end of the sleeve 32, and the four adjusting bolts 4 at the same end of the sleeve 32 are angularly spaced 90°. The heads of the four adjusting bolts 4 form four-point contact with the surface of the shaft 11, thereby achieving stable fixing effect.

[0055] In one embodiment in which the adjusting screw 5 is rotatably connected to the furnace door 2 at one end, a hinge seat 22 is fixedly arranged on the side of the furnace door 2 away from the furnace body 1, and the one end of the adjusting screw 5 is rotatably connected to the hinge seat 22 through a pin.

[0056] In another embodiment (not shown) in which the adjusting screw 5 is rotatably connected to the furnace door 2 at one end, a ball socket is fixedly arranged on the side of the furnace door 2 away from the furnace body 1, and the one end of the adjusting screw 5 is provided with a ball head 52 and rotatably connected to the ball socket through the ball head 52. The mounting mode of the ball head 52 and the ball socket can refer to the prior art, and will not be described here.

[0057] The above-mentioned adjusting screw 5 passes through the connecting lug 3 and is locked on the connecting lug 3 by the nut 51, which can be achieved in the following way: the connecting lug 3 is provided with a through hole 34, and the inner side of the through hole 34 is provided with a mounting cylinder 35. The one end of the mounting cylinder 35 is provided with an annular rim 351 extending outwardly, and the other end of the mounting cylinder 35 is provided with a bottom plate 352 extending inwardly. The bottom plate 352 is provided with a clearance hole 354, and one nut is arranged on each side of the clearance hole 354. The adjusting screw 5 passes through the through hole 34 and the clearance hole 354, and is locked on the bottom plate 352 by the nuts. During adjustment, the mounting position of the furnace door 2 on the adjusting screw 5 is changed by rotating the nuts.

[0058] In order to avoid accidental touch of the screw and prevent dust from entering between the screw and the nut 51 to cause jamming, a cover 36 is detachably arranged on the connecting lug 3, which covers the one end of the screw 5 away from the furnace door 2. For example, the cover 36 is connected to the furnace door 2 by bolts.

[0059] For example, rubber buffers can be arranged between the nuts 51. The rubber buffers can be sleeved on the adjusting screw 5 and located between the nuts 51 and the bottom plate 352, thereby improving the buffering effect when closing the door.

[0060] In summary, the furnace door adjustable vacuum heat treatment furnace of the present application can adjust the position of the furnace door 2 before use, so that the furnace door 2 and the furnace body 1 are better fitted. Specifically, the existence of the movable gap 33 allows the shaft sleeve 32 to move up and down on the shaft 22 (adjust the height of the furnace door) and deflect (adjust the inclination angle of the furnace door), so as to realize the three-dimensional alignment of the furnace door and the furnace body, and ensure the complete fitting of the sealing surface. When adjusting, first loosen the adjusting bolts 4, so that the shaft sleeve 32 can move up and down along the shaft 11, thereby adjusting the height of the furnace door 2; because there is a movable gap 33 between the shaft sleeve 32 and the shaft 11, the shaft sleeve 32 can deflect relative to the shaft 11, thereby changing the inclination of the furnace door 2; finally, lock the adjusting bolts 4, and fix the relative position of the shaft sleeve 32 and the shaft 11 after adjustment through the adjusting bolts 4. The furnace door adjustable vacuum heat treatment furnace of the present application can also adjust the furnace door 2 through the adjusting screw 5. Specifically, by rotating the nut 51, the furnace door 2 is fixed at different positions of the adjusting screw 5, so that the furnace door 2 rotates horizontally around the hinge shaft 31, thereby changing the angle of the furnace door 2. Through the above adjustment, the furnace door 2 can be more fitted to the furnace body 1, reducing the gap between the two, thereby improving the fitting and sealing performance.

[0061] The above is only an optional embodiment of the present application and does not limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A furnace door adjustable vacuum heat treatment furnace, characterized by, The utility model relates to a furnace door, and particularly relates to a furnace door with adjustable opening and closing angle. The furnace door is arranged on one side of the furnace body and can be opened and closed horizontally. A rotating shaft is arranged on one side of the furnace body and extends vertically. One end of the connecting lug is provided with a hinged shaft and is rotatably connected with the furnace door through the hinged shaft, and the other end is provided with a shaft sleeve which is sleeved outside the rotating shaft and has a clearance with the rotating shaft. A plurality of adjusting bolts are arranged on both ends of the shaft sleeve and are perpendicularly and threadedly connected with the shaft sleeve, one end of the adjusting bolt extends into the shaft sleeve and locks the rotating shaft to fix the relative position of the rotating shaft and the shaft sleeve. One end of the adjusting screw is rotatably connected with the furnace door, and the other end penetrates through the connecting lug and is locked on the connecting lug through a nut. A connecting seat is fixedly arranged on one side of the furnace body, and the rotating shaft is rotatably arranged on the connecting seat.

2. The furnace door-adjustable vacuum heat treatment furnace according to claim 1, characterized by, Two shaft seats are fixedly arranged on the side of the furnace door away from the furnace body, and each of the two shaft seats is provided with a pin shaft; the hinged shaft is located between the two shaft seats and is rotatably connected with the two pin shafts at both ends.

3. The furnace door adjustable vacuum heat treatment furnace according to claim 1, characterized in that, The inner diameter of the shaft sleeve is 1mm to 5mm larger than the outer diameter of the rotating shaft.

4. The furnace door adjustable vacuum heat treatment furnace according to claim 1, characterized in that, Four adjusting bolts are arranged on each end of the shaft sleeve.

5. The furnace door adjustable vacuum heat treatment furnace according to claim 1, characterized in that, The adjusting bolts arranged on the same end of the shaft sleeve are equally spaced around the central axis of the shaft sleeve.

6. The furnace door-adjustable vacuum heat treatment furnace according to claim 1 or 5, characterized by, A hinged seat is fixedly arranged on the side of the furnace door away from the furnace body, and one end of the adjusting screw is rotatably connected with the hinged seat through a pin shaft.

7. The furnace door adjustable vacuum heat treatment furnace according to claim 1, characterized in that, The connecting lug is provided with a through hole, and an installation cylinder is arranged inside the through hole; one end of the installation cylinder is provided with an annular rim extending outward, the annular rim is connected with the connecting lug through a bolt, and the other end of the installation cylinder is provided with a bottom plate extending inward; the bottom plate is provided with a clearance hole, and one of the nuts is arranged on each side of the clearance hole; the adjusting screw penetrates through the through hole and the clearance hole and is locked on the bottom plate through the nut.

8. The furnace door adjustable vacuum heat treatment furnace according to claim 1, characterized in that, A cover is detachably arranged on the connecting lug, and the cover covers one end of the screw away from the furnace door.

9. The furnace door adjustable vacuum heat treatment furnace according to claim 1 or 8, characterized by, ​

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