Muffle furnace exhaust gas support components and muffle furnace
By designing a muffle furnace exhaust gas support assembly and utilizing sliding connectors and roller structures, the problem of twisting and breaking of the exhaust gas pipe under temperature changes was solved, achieving stable connection and leak-proof performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU IHI FENGDONG VACUUM TECH CO LTD
- Filing Date
- 2025-06-04
- Publication Date
- 2026-05-26
AI Technical Summary
The existing muffle furnace exhaust pipe is prone to twisting when it is extended or shortened, which can lead to component breakage and gas leakage.
A muffle furnace exhaust gas support assembly was designed, including a support member and a connector. The connector is slidably connected to the support member and can move along the axial direction of the muffle furnace. It is equipped with rollers and sleeves to reduce friction and prevent the exhaust gas exhaust channel from twisting.
It effectively prevents the exhaust gas channel from twisting and breaking when the temperature changes, extends its service life, and avoids gas leakage.
Smart Images

Figure CN224285352U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of heating equipment technology, and in particular to a muffle furnace exhaust gas emission support component and a muffle furnace. Background Technology
[0002] A muffle furnace, also known as a box furnace, is characterized by its simple operation, convenient maintenance, and controllable chimney at the rear. It is suitable for chemical analysis of coal, coking products, and chemical raw materials.
[0003] As the temperature of the muffle furnace increases, the muffle furnace will experience thermal expansion, causing the exhaust pipe of the muffle furnace to extend backward; as the temperature of the muffle furnace decreases, the muffle furnace will experience thermal contraction, causing the exhaust pipe of the muffle furnace to shorten forward.
[0004] The exhaust pipe needs to be supported by a support device. In the existing technology, the support device is fixed on the outer shell of the muffle furnace. When the exhaust pipe is extended or shortened, the parts of the exhaust pipe are easily twisted, and after long-term use, they are prone to breakage and leakage. Utility Model Content
[0005] The purpose of this utility model is to provide a muffle furnace exhaust gas emission support assembly to solve the technical problem that the exhaust gas emission pipe parts are easily twisted when the exhaust gas emission pipe is extended or shortened in the prior art.
[0006] The muffle furnace exhaust gas support assembly provided by this utility model includes a support component and a connector;
[0007] The support member is used for fixed connection with the outer surface of the muffle furnace;
[0008] The connector is used for fixed connection with the exhaust gas passage of the muffle furnace, the connector is slidably connected with the support, and the connector can slide relative to the support along the axial direction of the muffle furnace.
[0009] Furthermore, the connector is provided with a roller, which is rotatably connected to the connector and can rotate around its axis; the roller is slidably connected to the top surface of the support.
[0010] Furthermore, the top surface of the support member is provided with a protrusion that extends along the axial direction of the muffle furnace;
[0011] The roller has a groove on its annular sidewall, the protrusion extends into the groove, and the top surface of the support member contacts the annular sidewall of the roller.
[0012] Furthermore, the top surface of the support member is provided with a slide rail, the slide rail extending along the axial direction of the muffle furnace; the roller is disposed inside the slide rail, and the roller is slidably connected to the slide rail.
[0013] Furthermore, the connector is rod-shaped.
[0014] Furthermore, the bottom of the connector is provided with a sleeve, which is fitted onto the exhaust gas emission channel.
[0015] Furthermore, the connector is provided with a mounting component, which is located above the support component, and the roller is rotatably connected to the mounting component.
[0016] Furthermore, the exhaust gas emission channel includes an exhaust gas emission pipe and a connecting pipe;
[0017] The exhaust pipe is provided with a first flange at its end;
[0018] The connecting pipe is provided with a second flange at each end, and the first flange is connected to the second flange at one end of the connecting pipe;
[0019] The sleeve is fitted onto the connecting pipe, and the sleeve is located between the two second flanges.
[0020] Furthermore, the longitudinal section of the support member is trapezoidal.
[0021] The purpose of this utility model is also to provide a muffle furnace, including the muffle furnace exhaust gas support assembly provided by this utility model.
[0022] This utility model provides a muffle furnace exhaust gas support assembly, including a support member and a connector. The support member is fixedly connected to the outer surface of the muffle furnace. The connector is fixedly connected to the exhaust gas channel of the muffle furnace, and the connector is slidably connected to the support member. The connector can slide relative to the support member along the axial direction of the muffle furnace. When the exhaust gas channel of the muffle furnace extends or shortens along the axial direction of the muffle furnace, the connector moves synchronously along the axial direction of the muffle furnace, and the connector can slide relative to the support member along the axial direction of the muffle furnace. This allows the position of the connector to be adjusted according to the length of the exhaust gas channel extending out of the muffle furnace, preventing the parts of the exhaust gas channel from twisting and preventing breakage and leakage after prolonged use. Attached Figure Description
[0023] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0024] Figure 1This is a front view of the muffle furnace exhaust gas support assembly provided in this embodiment of the utility model;
[0025] Figure 2 This is a partial schematic diagram of the muffle furnace exhaust gas support assembly provided in an embodiment of this utility model;
[0026] Figure 3 This is a schematic diagram of the structure of the support component of the muffle furnace exhaust gas support assembly provided in this embodiment of the utility model;
[0027] Figure 4 This is a schematic diagram of the sleeve structure of the muffle furnace exhaust gas support assembly provided in this embodiment of the utility model.
[0028] Icons: 1 - Support; 11 - Protrusion; 2 - Connector; 21 - Roller; 211 - Groove; 22 - Sleeve; 23 - Mounting component; 3 - Outer surface of muffle furnace; 4 - Exhaust gas discharge pipe; 41 - First flange; 5 - Connecting pipe; 51 - Second flange. Detailed Implementation
[0029] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0030] This utility model provides a muffle furnace exhaust gas support component. Several embodiments are given below to describe the muffle furnace exhaust gas support component provided by this utility model in detail.
[0031] Example 1
[0032] The muffle furnace exhaust gas support assembly provided in this embodiment, such as... Figures 1 to 4 As shown, it includes a support member 1 and a connector 2; the support member 1 is used to be fixedly connected to the outer surface 3 of the muffle furnace; the connector 2 is used to be fixedly connected to the exhaust gas discharge channel of the muffle furnace, the connector 2 is slidably connected to the support member 1, and the connector 2 can slide relative to the support member 1 along the axial direction of the muffle furnace.
[0033] The support member 1 is fixedly connected to the outer surface 3 of the muffle furnace so that the support member 1 is fixed on the outer surface 3 of the muffle furnace. The support member 1 can support the connector 2, so that the support member 1 supports the exhaust gas discharge channel of the muffle furnace through the connector 2.
[0034] The connector 2 is fixedly connected to the exhaust gas passage of the muffle furnace. When the exhaust gas passage of the muffle furnace extends or shortens along the axial direction of the muffle furnace, the connector 2 and the exhaust gas passage of the muffle furnace move synchronously along the axial direction of the muffle furnace.
[0035] The axis of the muffle furnace is parallel to the axis of the exhaust gas passage.
[0036] When the exhaust gas passage of the muffle furnace extends or shortens along the axial direction of the muffle furnace, the connecting piece 2 moves synchronously along the axial direction of the muffle furnace, and the connecting piece 2 can slide relative to the support piece 1 along the axial direction of the muffle furnace, so that the position of the connecting piece 2 can be adjusted according to the length of the exhaust gas passage extending out of the muffle furnace, so as to prevent the parts of the exhaust gas passage from twisting and prevent the exhaust gas passage from breaking and leaking after long-term use.
[0037] Furthermore, the connector 2 is provided with a roller 21, which is rotatably connected to the connector 2 and can rotate around the axis of the roller 21; the roller 21 is slidably connected to the top surface of the support 1.
[0038] When the length of the exhaust gas passage extending out of the muffle furnace remains unchanged, the roller 21 does not rotate. The roller 21 is placed on the support member 1, which supports the roller 21 and thus supports the exhaust gas passage.
[0039] When the exhaust gas passage of the muffle furnace extends or shortens along the axial direction of the muffle furnace, the roller 21 slides relative to the top surface of the support member 1 along the axial direction of the muffle furnace. By setting the roller 21, the friction between the connector 2 and the support member 1 is reduced, making the movement of the connector 2 smoother, and the roller 21 and the support member 1 are not easily damaged.
[0040] In one alternative embodiment, the top surface of the support member 1 is provided with a protrusion 11, which extends along the axial direction of the muffle furnace; the annular sidewall of the roller 21 is provided with a groove 211, the protrusion 11 extends into the groove 211, and the top surface of the support member 1 contacts the annular sidewall of the roller 21.
[0041] Specifically, such as Figure 3 As shown, a protrusion 11 is provided in the middle of the top surface of the support member 1. The protrusion 11 extends along the axial direction of the muffle furnace. A groove 211 is provided on the annular sidewall of the roller 21. The protrusion 11 extends into the groove 211 and can guide the roller 21. The roller 21 can move along the extension direction of the protrusion 11. In a direction perpendicular to the extension direction of the protrusion 11, the annular sidewall on one side of the groove 211 contacts the top surface on one side of the protrusion 11, and the annular sidewall on the other side of the groove 211 contacts the top surface on the other side of the protrusion 11, so that the roller 21 rolls on the top surface of the support member 1. The extension direction of the protrusion 11 and the direction perpendicular to the extension direction of the protrusion 11 are both set in the horizontal direction.
[0042] In another alternative embodiment, a slide rail is provided on the top surface of the support member 1, and the slide rail extends along the axial direction of the muffle furnace; a roller 21 is disposed in the slide rail and is slidably connected to the slide rail.
[0043] The roller 21 slides along the extension direction of the slide rail, and the slide rail can guide the sliding direction of the roller 21.
[0044] In other embodiments, the support member 1 can be a sleeve 22, the connector 2 can be a connecting rod, the axial direction of the sleeve 22 is parallel to the axial direction of the muffle furnace, the axial direction of the connecting rod is parallel to the axial direction of the muffle furnace, the sleeve 22 is sleeved on the outside of the connector 2, the sleeve 22 can support the connector 2, and the connector 2 can slide along the axial direction of the sleeve 22.
[0045] The connector 2 can be rod-shaped, bracket-shaped, or any other suitable form.
[0046] In this embodiment, the connector 2 is rod-shaped.
[0047] The connector 2 can be a rectangular rod or a cylindrical rod, etc. Rod-shaped connectors 2 occupy less space and are easy to arrange.
[0048] Furthermore, the bottom of the connector 2 is provided with a sleeve 22, which is fitted onto the exhaust gas emission channel.
[0049] A sleeve 22 is fixedly installed at the bottom of the connector 2. The sleeve 22 is fixedly sleeved on the exhaust gas discharge pipe 4, thereby fixing the connector 2 on the exhaust gas discharge pipe 4. The connector 2 can move synchronously with the exhaust gas discharge pipe 4 along the axial direction of the muffle furnace.
[0050] Furthermore, the connector 2 is provided with a mounting part 23, which is located above the support 1, and the roller 21 is rotatably connected to the mounting part 23.
[0051] A mounting part 23 is provided in the middle of the connector 2. The mounting part 23 is located above the support 1. The roller 21 is rotatably connected to the mounting part 23. The roller 21 can rotate around the axis of the roller 21 so that the roller 21 is slidably connected to the top surface of the support 1.
[0052] Furthermore, the exhaust gas emission channel includes an exhaust gas emission pipe 4 and a connecting pipe 5; the end of the exhaust gas emission pipe 4 is provided with a first flange 41; the two ends of the connecting pipe 5 are respectively provided with second flanges 51, the first flange 41 is connected to the second flange 51 at one end of the connecting pipe 5; the sleeve 22 is sleeved on the connecting pipe 5, and the sleeve 22 is located between the two second flanges 51.
[0053] When the temperature of the muffle furnace changes, the exhaust pipe 4 will experience thermal expansion and contraction along its axial direction.
[0054] The axial direction of exhaust pipe 4 is parallel to the axial direction of the muffle furnace.
[0055] The end of the exhaust pipe 4 facing the outside of the muffle furnace is provided with a first flange 41. The first flange 41 is connected to a second flange 51 at one end of the connecting pipe 5 so that the exhaust pipe and the connecting pipe 5 are connected. The sleeve 22 is fixedly sleeved on the connecting pipe 5 so that the sleeve 22 is connected to the exhaust pipe 4 through the connecting pipe 5.
[0056] The sleeve 22 can be fixed to the connecting pipe 5 in a detachable fixed connection manner. For example, the sleeve 22 is formed by a clamp, which is locked to the connecting pipe 5 by bolts.
[0057] The first flange 41 and the second flange 51 can be connected by bolts.
[0058] The second flange 51 at the other end of the connecting pipe 5 can be used to connect to the heat dissipation pipe.
[0059] Furthermore, the longitudinal section of support member 1 is trapezoidal.
[0060] like Figure 1 As shown, the longitudinal section of the support member 1 along the vertical direction is trapezoidal. The top surface of the support member 1 is parallel to the horizontal plane, and the bottom surface of the support member 1 is inclined to the horizontal plane. The longitudinal section of the support member 1 is trapezoidal. The support member 1 can be fixed relatively stably on the outer surface 3 of the muffle furnace and stably support the connecting member 2.
[0061] Example 2
[0062] The muffle furnace provided in this embodiment includes the muffle furnace exhaust gas support assembly provided in Embodiment 1. When the exhaust gas exhaust channel of the muffle furnace extends or shortens along the axial direction of the muffle furnace, the connecting member 2 moves synchronously along the axial direction of the muffle furnace, and the connecting member 2 can slide relative to the support member 1 along the axial direction of the muffle furnace, so that the position of the connecting member 2 can be adjusted according to the length of the exhaust gas exhaust channel extending out of the muffle furnace, to prevent the parts of the exhaust gas exhaust channel from twisting, and to prevent breakage and gas leakage after long-term use.
[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. A muffle exhaust vent support assembly, characterized by, It includes a support member (1) and a connector (2); The support member (1) is used to be fixedly connected to the outer surface (3) of the muffle furnace; The connector (2) is used to be fixedly connected to the exhaust gas passage of the muffle furnace. The connector (2) is slidably connected to the support (1). The connector (2) can slide relative to the support (1) along the axial direction of the muffle furnace.
2. The muffle exhaust discharge support assembly of claim 1, wherein, The connector (2) is provided with a roller (21), the roller (21) is rotatably connected to the connector (2), the roller (21) can rotate around the axis of the roller (21); the roller (21) is slidably connected to the top surface of the support (1).
3. The muffle furnace exhaust gas support assembly according to claim 2, characterized in that, The support member (1) has a protrusion (11) on its top surface, and the protrusion (11) extends along the axial direction of the muffle furnace; The roller (21) has a groove (211) on its annular sidewall, the protrusion (11) extends into the groove (211), and the top surface of the support (1) contacts the annular sidewall of the roller (21).
4. The muffle furnace exhaust gas support assembly according to claim 2, characterized in that, The top surface of the support member (1) is provided with a slide rail, and the extension direction of the slide rail extends along the axial direction of the muffle furnace; the roller (21) is disposed in the slide rail, and the roller (21) is slidably connected to the slide rail.
5. The muffle furnace exhaust gas support assembly according to claim 2, characterized in that, The connector (2) is rod-shaped.
6. The muffle furnace exhaust gas support assembly according to claim 5, characterized in that, The bottom of the connector (2) is provided with a sleeve (22), which is sleeved on the exhaust gas discharge channel.
7. The muffle furnace exhaust gas support assembly according to claim 5, characterized in that, The connector (2) is provided with a mounting part (23), which is located above the support (1), and the roller (21) is rotatably connected to the mounting part (23).
8. The muffle furnace exhaust gas support assembly according to claim 6, characterized in that, The exhaust gas discharge channel includes an exhaust gas discharge pipe (4) and a connecting pipe (5); The exhaust pipe (4) is provided with a first flange (41) at its end; The connecting pipe (5) is provided with a second flange (51) at both ends, and the first flange (41) is connected to the second flange (51) at one end of the connecting pipe (5). The sleeve (22) is fitted onto the connecting pipe (5), and the sleeve (22) is located between the two second flanges (51).
9. The muffle furnace exhaust gas support assembly according to claim 1, characterized in that, The longitudinal section of the support member (1) is trapezoidal.
10. A muffle furnace, characterized in that, Includes the muffle furnace exhaust gas support assembly as described in any one of claims 1-9.