Heating furnace side wall exhaust structure

Abstract

The utility model relates to the technical field of furnace wall exhaust, in particular to a heating furnace side wall exhaust structure. The device comprises a heating furnace side wall and an exhaust hole, the exhaust hole is fixed to the side face of the heating furnace side wall, an interception mechanism is assembled on the inner side of the exhaust hole, the interception mechanism is used for conducting flow isolation on external air and comprises an exhaust pipe, an end annular protrusion and an anti-backflow assembly, and the exhaust pipe is fixed to one end of the inner side of the exhaust hole; an end annular protrusion is integrally fixed to the end of the inner side of the exhaust pipe, and an anti-backflow assembly is assembled at the position, close to the end annular protrusion, of the inner side of the exhaust pipe. Through the structural design of the interception mechanism and the plugging mechanism, the one-way exhaust function in the exhaust hole is conveniently achieved, external wet air is prevented from flowing back into the side wall of the heating furnace, meanwhile, when the device is used after furnace baking is completed, the exhaust hole can be plugged, and the overall air tightness in the side wall of the heating furnace is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of furnace wall exhaust, in particular to a heating furnace side wall exhaust structure. Background Art

[0002] At present, in the field of industrial furnaces, after the lining of the hot furnace (industrial furnace) is completed with refractory materials, a furnace drying process is required to dry out the moisture in the refractory materials;

[0003] For example, a CNC natural gas forging continuous heating furnace step furnace wall with a publication (announcement) number of CN208282951 U includes a heating furnace wall and a control box, the outer layer of the heating furnace wall is a heat insulation layer, the inner layer of the heating furnace wall is a refractory layer, and the heat insulation layer and the refractory layer are between the heat insulation layer and the refractory layer. The bottom of the heating furnace wall is provided with an inwardly protruding step, a material section is placed between the first step and the second step, a thermocouple is installed on the top of the second step, and a thermocouple plug is installed at the other end of the junction box. A flame-spraying heating device is installed through one side wall of the heating furnace wall, and one end of the flame-spraying heating device located outside the heating furnace wall is connected to a natural gas pipeline, and a solenoid valve is installed on the natural gas pipeline;

[0004] In summary, it can be seen that the following technical problems exist in the prior art: the above-mentioned prior art is the same as other traditional furnace side walls. During use, since the traditional industrial furnace body (furnace wall) is a steel plate structure and is sealed, the moisture from the oven has nowhere to be discharged and often penetrates through the steel plates and welds between the steel structures, affecting the overall structure of the furnace body and making it impossible to ensure the overall air tightness of the furnace body. Therefore, drainage and exhaust holes are generally set on the furnace skin of the furnace wall steel structure. However, in the later stage of exhausting the furnace, when the air pressure in the furnace is relatively low, a phenomenon of backflow of external humid air often occurs, causing part of the humid air to flow back into the furnace. For this reason, we propose an exhaust structure for the side wall of a heating furnace. Utility Model Content

[0005] The utility model aims to provide a heating furnace side wall exhaust structure to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A heating furnace side wall exhaust structure comprises a heating furnace side wall and an exhaust hole, wherein the exhaust hole is fixed on the side of the heating furnace side wall, and a retention mechanism is installed on the inner side of the exhaust hole, and the retention mechanism is used to isolate the external air. The retention mechanism comprises an exhaust pipe, an end annular protrusion and an anti-backflow component, an exhaust pipe is fixed at one end of the inner side of the exhaust hole, an end annular protrusion is integrally fixed to the end of the inner side of the exhaust pipe, and an anti-backflow component is installed on the inner side of the exhaust pipe and close to the end annular protrusion.

[0008] Preferably, the anti-backflow component includes a spring, a core cavity tube, an air flow hole, a matching groove, a sealing head and an inner air inlet port, a spring is fixed to one side of the end annular protrusion, a core cavity tube is fixed to one end of the spring, the core cavity tube is slidably connected to the inner side of the exhaust pipe, air flow holes are provided at the top and bottom of one end of the core cavity tube, matching grooves corresponding to the positions of the air flow holes are provided at the top and bottom of the inner side of the exhaust pipe, the matching grooves are connected with the air flow holes, a sealing head is integrally fixed to one end of the core cavity tube, an inner air inlet port is provided on the inner side of the exhaust pipe and close to the sealing head, and the inner air inlet port is interference fit with the sealing head.

[0009] Preferably, the end of the plugging head is in the shape of a frustum.

[0010] Preferably, one end of the exhaust pipe away from the exhaust hole is equipped with a blocking mechanism, and the blocking mechanism is used to block the exhaust pipe.

[0011] Preferably, the sealing mechanism includes a sealing screw, a force ratchet and a limit strip, one end of the exhaust pipe is threadedly connected to the sealing screw, a force ratchet is fixed to the outside of the sealing screw, one side of the force ratchet is meshedly connected to the limit strip, and the middle part of the limit strip is rotatably connected to the side wall of the heating furnace through a pin.

[0012] Preferably, two fixing screws are threadedly connected to the inner side of the side wall of the heating furnace and close to the end of the limiting strip, and the fixing screws are in close contact with the limiting strip.

[0013] Preferably, a sealing ring is sleeved on the outer side of the blocking screw and close to the exhaust pipe, and the sealing ring is in close contact with the exhaust pipe.

[0014] It can be seen without a doubt that the above-mentioned technical solution of the present application can definitely solve the technical problem to be solved by the present application.

[0015] At the same time, through the above technical solutions, the utility model has at least the following beneficial effects:

[0016] The utility model realizes the one-way exhaust function in the exhaust hole through the structural design of the intercepting mechanism and the blocking mechanism, thereby preventing the external moist air from flowing back into the side wall of the heating furnace. At the same time, when the furnace is used after the baking is completed, the exhaust hole can be blocked to ensure the overall air tightness in the side wall of the heating furnace. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 For this utility model Figure 1 The enlarged structural diagram at A in the middle;

[0020] Figure 3 It is a schematic diagram of the connection structure of the plugging screw and the force-applying ratchet of the utility model;

[0021] Figure 4 The utility model is a schematic diagram of the connection structure of the plugging screw and the sealing ring.

[0022] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0023] In the figure: 1. Side wall of heating furnace; 2. Exhaust hole; 3. Exhaust pipe; 4. End annular protrusion; 5. Spring; 6. Core cavity tube; 7. Air flow hole; 8. Matching groove; 9. Sealing head; 10. Inner air inlet; 11. Sealing screw; 12. Force ratchet; 13. Limiting strip; 14. Fixing screw; 15. Sealing ring. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0025] Example 1

[0026] Reference Figure 1-2 A heating furnace side wall exhaust structure comprises a heating furnace side wall 1 and an exhaust hole 2. The exhaust hole 2 is fixed on the side of the heating furnace side wall 1. The inner side of the exhaust hole 2 is equipped with an interception mechanism, which is used to isolate the external air. The interception mechanism comprises an exhaust pipe 3, an end annular protrusion 4 and an anti-backflow component. The exhaust pipe 3 is fixed at one end of the inner side of the exhaust hole 2. The end of the inner side of the exhaust pipe 3 is integrally fixed with the end annular protrusion 4. The anti-backflow component is equipped on the inner side of the exhaust pipe 3 and close to the end annular protrusion 4.

[0027] The anti-backflow component includes a spring 5, a core cavity tube 6, an air flow hole 7, a matching groove 8, a plugging head 9 and an air inlet inner port 10. A spring 5 is fixed to one side of the end annular protrusion 4, and a core cavity tube 6 is fixed to one end of the spring 5. The core cavity tube 6 is slidably connected to the inner side of the exhaust pipe 3. Air flow holes 7 are provided at the top and bottom of one end of the core cavity tube 6. Matching grooves 8 corresponding to the positions of the air flow holes 7 are provided at the top and bottom of the inner side of the exhaust pipe 3. The matching groove 8 is connected with the air flow hole 7. A plugging head 9 is integrally fixed to one end of the core cavity tube 6. An air inlet inner port 10 is provided on the inner side of the exhaust pipe 3 and close to the plugging head 9. The air inlet inner port 10 is interference fit with the plugging head 9. In normal state, the spring 5 is in a non-compressed state, and the plugging head 9 is in close contact with the air inlet inner port 10, so that external air cannot enter the exhaust hole 2 through the exhaust pipe 3.

[0028] The end of the plugging head 9 is in a frustum shape, and the setting of the plugging head 9 facilitates forming a plugging effect on the end of the air inlet inner port 10.

[0029] Example 2

[0030] Embodiment 1 is further optimized, specifically, as Figure 3-4 As shown, one end of the exhaust pipe 3 away from the exhaust hole 2 is equipped with a blocking mechanism, which is used to block the exhaust pipe 3.

[0031] The sealing mechanism includes a sealing screw 11, a force ratchet 12 and a limit strip 13. One end of the exhaust pipe 3 is threadedly connected to the sealing screw 11, and the force ratchet 12 is fixed to the outside of the sealing screw 11. One side of the force ratchet 12 is meshed and connected to the limit strip 13. The middle part of the limit strip 13 is rotatably connected to the side wall 1 of the heating furnace through a pin. The setting of the limit strip 13 can prevent the force ratchet 12 from driving the sealing screw 11 to rotate, thereby increasing the stability of the connection between the sealing screw 11 and the exhaust pipe 3.

[0032] Two fixing screws 14 are threadedly connected to the inner side of the heating furnace side wall 1 and near the end of the limit strip 13. The fixing screws 14 are in close contact with the limit strip 13. When the sealing screw 11 is connected to the exhaust pipe 3, the fixing screws 14 are respectively installed on the heating furnace side wall 1 and in contact with both sides of the end of the limit strip 13 to form a rotation limit for the limit strip 13, so that the limiting effect of the limit strip 13 and the force ratchet 12 is better.

[0033] A sealing ring 15 is sleeved on the outer side of the plugging screw 11 and close to the exhaust pipe 3. The sealing ring 15 is in close contact with the exhaust pipe 3. The setting of the sealing ring 15 makes the connection and sealing effect between the plugging screw 11 and the exhaust pipe 3 better.

[0034] From the above, we can know that:

[0035] The utility model is aimed at the following technical problems: the existing technology is the same as other traditional furnace side walls. During the use process, since the furnace body and furnace wall of the traditional industrial furnace are all steel plate structures and are sealed, the moisture in the oven has nowhere to be discharged and often penetrates through the welds between the steel plates and steel structures, affecting the overall structure of the furnace body and failing to ensure the overall air tightness of the furnace body. Therefore, drainage and exhaust holes are generally set on the furnace skin of the furnace wall steel structure. However, in the later stage of exhausting the furnace, when the air pressure in the furnace is relatively low, the phenomenon of external humid air backflow often occurs, causing part of the humid air to flow back into the furnace. The technical solutions of the above embodiments are adopted. At the same time, the implementation process of the above technical solutions is:

[0036] When in use, during the process of the oven baking process, the high-pressure airflow and water vapor on the inner side of the heating furnace side wall 1 enter the exhaust pipe 3 through the exhaust hole 2, and push the plugging head 9 along the inner side of the air inlet inner port 10, so that the plugging head 9 drives the core cavity tube 6 to squeeze the spring 5 to contract, and then the plugging head 9 is separated from the inner side of the air inlet inner port 10, so that the air inlet inner port 10 is connected with the matching groove 8 and the airflow hole 7, and the airflow and water vapor can be discharged through the inner side of the exhaust pipe 3;

[0037] In the later stage of the furnace baking process, the temperature on the inner side of the heating furnace side wall 1 gradually decreases, and the air pressure gradually decreases. Therefore, the elastic force generated by the spring 5 gradually pushes the core cavity tube 6 to reset and move, so that the sealing head 9 gradually approaches the inner air inlet 10. When there is no longer an air pressure difference between the inner side and the outside of the heating furnace side wall 1, the sealing head 9 is completely connected to the inner air inlet 10, and the external humid air cannot enter the heating furnace side wall 1 through the exhaust pipe 3, thereby achieving the effect of preventing backflow.

[0038] Through the above configuration, the present application can certainly solve the above technical problems and achieve the following technical effects:

[0039] The utility model uses the structural design of the intercepting mechanism and the sealing mechanism to facilitate the device to realize the one-way exhaust function in the exhaust hole 2, thereby preventing external humid air from flowing back into the side wall 1 of the heating furnace. At the same time, when the furnace is used after the baking is completed, the exhaust hole 2 can be sealed to ensure the overall air tightness in the side wall 1 of the heating furnace.

[0040] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] Obviously, the embodiments described above are only some embodiments of the utility model, rather than all embodiments. The preferred embodiments of the utility model are given in the accompanying drawings, but they do not limit the patent scope of the utility model. The utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the utility model specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the utility model.

Claims

1. A heating furnace side wall exhaust structure, characterized in that: The invention comprises a heating furnace side wall (1) and an exhaust hole (2), wherein the exhaust hole (2) is fixed on the side of the heating furnace side wall (1), and a retaining mechanism is installed on the inner side of the exhaust hole (2), and the retaining mechanism is used to isolate the external air, and the retaining mechanism comprises an exhaust pipe (3), an end annular protrusion (4) and an anti-backflow component, wherein the exhaust pipe (3) is fixed at one end of the inner side of the exhaust hole (2), and the end annular protrusion (4) is integrally fixed to the end of the inner side of the exhaust pipe (3), and the anti-backflow component is installed on the inner side of the exhaust pipe (3) and close to the end annular protrusion (4).

2. A heating furnace side wall exhaust structure according to claim 1, characterized in that: The anti-backflow component comprises a spring (5), a core cavity tube (6), an air flow hole (7), a matching groove (8), a plugging head (9) and an air inlet inner port (10). A spring (5) is fixed to one side of the end annular protrusion (4), and a core cavity tube (6) is fixed to one end of the spring (5). The core cavity tube (6) is slidably connected to the inner side of the exhaust pipe (3). The top and bottom of one end of the core cavity tube (6) are provided with air flow holes (7). The top and bottom of the inner side of the exhaust pipe (3) are provided with matching grooves (8) corresponding to the positions of the air flow holes (7). The matching groove (8) is connected to the air flow holes (7). A plugging head (9) is integrally fixed to one end of the core cavity tube (6). An air inlet inner port (10) is provided on the inner side of the exhaust pipe (3) and close to the plugging head (9). The air inlet inner port (10) is interference fit with the plugging head (9).

3. A heating furnace side wall exhaust structure according to claim 2, characterized in that: The end of the plugging head (9) is in the shape of a frustum.

4. The heating furnace side wall exhaust structure according to claim 1, characterized in that: One end of the exhaust pipe (3) away from the exhaust hole (2) is equipped with a blocking mechanism, and the blocking mechanism is used to block the exhaust pipe (3).

5. A heating furnace side wall exhaust structure according to claim 4, characterized in that: The blocking mechanism comprises a blocking screw (11), a force-applying ratchet (12) and a limit strip (13); one end of the exhaust pipe (3) is threadedly connected to the blocking screw (11); a force-applying ratchet (12) is fixed to the outer side of the blocking screw (11); one side of the force-applying ratchet (12) is meshingly connected to the limit strip (13); and the middle part of the limit strip (13) is rotatably connected to the side wall (1) of the heating furnace via a pin.

6. A heating furnace side wall exhaust structure according to claim 5, characterized in that: Two fixing screws (14) are threadedly connected to the inner side of the heating furnace side wall (1) and close to the end of the limiting strip (13), and the fixing screws (14) are in close contact with the limiting strip (13).

7. The heating furnace side wall exhaust structure according to claim 5, characterized in that: A sealing ring (15) is sleeved on the outer side of the plugging screw (11) and at a position close to the exhaust pipe (3), and the sealing ring (15) is in close contact with the exhaust pipe (3).

Images