Exhaust device of muffle furnace
By designing an exhaust device in the muffle furnace, utilizing exhaust pipes, a waste removal box, and a purification box, the problem of waste gas accumulation in the muffle furnace was solved, enabling timely discharge and purification of waste gas, thus ensuring experimental effectiveness and safety.
Patent Information
- Application Number
- CN202423069843.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-12-12
Smart Images
Figure CN223525596U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of muffle furnace, specifically relates to a muffle furnace exhaust device. BACKGROUND
[0002] At present, the muffle furnace commonly used in the laboratory does not have the function of exhaust in high temperature experiment, so in the experimental process of the specific material roasting, the volatile substances and impurities in it volatilize into gaseous state under the high temperature environment, accumulate in the muffle furnace and cause the experimental material roasting to be insufficient, thereby more cost is produced and the subsequent experiment progress is influenced.
[0003] In addition, some materials will produce toxic or corrosive gas in the roasting process, such as sulfur compound, halogen, etc., if this kind of gas is not timely excluded and handled, accumulates in the furnace, there is the problem of corrosion to the furnace body and health hazard to the experimental personnel, even the potential safety hazard. CONTENT OF THE UTILITY MODEL
[0004] The utility model discloses a muffle furnace exhaust device, which aims to solve at least one of the technical problems existing in the prior art.
[0005] A muffle furnace exhaust device, comprising an exhaust pipe, one end of the exhaust pipe is communicated with an exhaust hole arranged at the top of the back of the muffle furnace hearth, the other end of the exhaust pipe is communicated into a dedusting box, the gas outlet of the dedusting box is connected with the gas inlet of a purification box through a connecting pipe, a detachable activated carbon plate is arranged in the purification box, the gas outlet of the purification box is connected with the inlet end of a serpentine condenser pipe through a connecting pipe, and a beaker is placed directly below the outlet end of the serpentine condenser pipe.
[0006] As a further scheme of the utility model, one end of the exhaust pipe in the dedusting box is provided with a gas distribution cavity with a narrow top and a wide bottom, and a plurality of gas distribution holes are uniformly arranged at the bottom of the gas distribution cavity.
[0007] As a further scheme of the utility model, a blower is further arranged at the top of the dedusting box, the air outlet of the blower is connected with a ventilation pipe, and the ventilation pipe extends to the bottom of the dedusting box.
[0008] As a further scheme of the utility model, a pressure equalizing chamber and a purification chamber are arranged in the purification box from bottom to top, a plurality of air vents are uniformly arranged at the top of the pressure equalizing chamber, an elastic three-labia membrane is arranged in each air vent, the activated carbon plate is detachably arranged in the purification chamber, and the activated carbon plate is attached to the inner wall of the purification chamber.
[0009] As a further scheme of the utility model: two vertical installation grooves are respectively arranged on two opposite side walls in the purification chamber, two protruding parts are respectively arranged on two opposite side edges of the activated carbon plate, and the protruding parts are slidably clamped in the corresponding vertical installation grooves.
[0010] As a further scheme of the utility model: a gas pressure gauge and a pressure reducing valve are further arranged on the exhaust pipe.
[0011] The utility model has the following beneficial effects:
[0012] The utility model discloses a muffle furnace exhaust device, which comprises a muffle furnace, an exhaust pipe, a gas-liquid separation box and a purification box. BRIEF DESCRIPTION OF DRAWINGS
[0013] The utility model will be further described below in combination with the drawings.
[0014] Figure 1 It is a muffle furnace exhaust device structure schematic view of the utility model;
[0015] Figure 2 It is the internal structure schematic view of the gas-liquid separation box and the purification box of the utility model;
[0016] Figure 3 It is Figure 2 It is the structure enlarged schematic view of A in the figure;
[0017] Figure 4 It is the internal overhead schematic view of the purification box of the utility model.
[0018] In the figure: 1, exhaust pipe; 2, gas-liquid separation box; 3, purification box; 31, pressure equalizing chamber; 32, purification chamber; 321, vertical installation groove; 33, air hole; 34, elastic three-labia membrane; 4, activated carbon plate; 41, protruding part; 5, serpentine condenser pipe; 6, beaker; 7, gas distribution cavity; 8, gas distribution hole; 9, air blower; 10, air pipe; 11, gas pressure gauge; 12, pressure reducing valve. DETAILED DESCRIPTION
[0019] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of the present application.
[0020] In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", "front", "back" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, a particular orientation configuration and an operation, therefore, it cannot be understood as a limitation on the present application.
[0021] In addition, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0022] Please refer to Figure 1 As shown in the drawings, the present application provides an exhaust device of a muffle furnace, which is suitable for use in a laboratory. The exhaust device comprises an exhaust pipe 1, the material of the exhaust pipe 1 is preferably a composite material of corundum and stainless steel, so that the exhaust pipe 1 will not melt and collapse even in a high temperature environment. A gas pressure gauge 11 and a pressure reducing valve 12 are installed on the exhaust pipe 1, one end of the exhaust pipe 1 is communicated with an exhaust hole opened at the top of the back of the muffle furnace, and the other end of the exhaust pipe 1 is communicated to a removal box 2. The gas outlet of the removal box 2 is connected to the gas inlet of a purification box 3 through a connecting pipe, and the purification box 3 is detachably provided with an activated carbon plate 4. The gas outlet of the purification box 3 is connected to the inlet end of a serpentine condenser tube 5 through a connecting pipe, and a beaker 6 is placed directly below the outlet end of the serpentine condenser tube 5.
[0023] It is worth noting that, first of all, according to the size of the experiment, the size of the muffle furnace and the content of organic solvent in the experimental material, the size of the exhaust hole is determined. If the exhaust hole is too small, the device will not be able to fully perform its intended function, and if the exhaust hole is too large, the temperature in the muffle furnace will be lost, resulting in inaccurate experimental results and placing the experimental personnel in a dangerous environment. Then, the exhaust pipe 1 is connected by using high melting point alloy to weld into the shape of a pipe, and special attention is paid to the air tightness of the welding between the exhaust pipe 1 and the exhaust hole of the muffle furnace.
[0024] The working principle of the exhaust device is as follows: during the muffle roasting process, toxic or corrosive waste gas is generated, and when the temperature in the furnace increases, the waste gas will naturally gather in the furnace due to the upward movement of hot gas. When the pressure reaches the threshold value on the pressure gauge 11, the pressure relief valve 12 opens, and the waste gas enters the waste removal solution in the waste removal tank 2 through the exhaust pipe 1, and the impurities in the waste gas are fully filtered. After the waste gas is filtered, it enters the purification tank 3 from the waste removal tank 2, and the activated carbon plate 4 in the purification tank 3 purifies the harmful substances and odors in the waste gas. After the waste gas is filtered and purified, it enters the serpentine condenser 5 to be liquefied and collected in the beaker 6 below the outlet end of the serpentine condenser 5.
[0025] Please refer to Figure 2 In an embodiment, as shown in the figure, the exhaust pipe 1 is provided with a gas distribution cavity 7 with a narrow top and a wide bottom at one end in the waste removal tank 2, and a plurality of gas distribution holes 8 are uniformly arranged at the bottom of the gas distribution cavity 7. By arranging the gas distribution cavity 7, the waste gas in the exhaust pipe 1 is evenly divided into multiple gas streams through the plurality of gas distribution holes 8 on the gas distribution cavity 7, and the impurities in the waste gas are fully filtered.
[0026] In addition, a blower 9 can also be arranged at the top of the waste removal tank 2, and the air outlet of the blower 9 is connected to the air pipe 10, which extends to the bottom of the waste removal tank 2. The blower 9 sends air into the waste removal solution through the air pipe 10, so that the waste removal solution in the waste removal tank 2 is in a flowing state, thereby more fully filtering the impurities in the waste gas.
[0027] Please refer to Figure 2 In an embodiment, as shown in the figure, the purification tank 3 is provided with an equalizing chamber 31 and a purification chamber 32 from bottom to top. Please refer to Figure 3 As shown in the figure, a plurality of air holes 33 are uniformly arranged at the top of the equalizing chamber 31, and an elastic three-leaf valve 34 is arranged in each air hole 33. The purification chamber 32 is provided with a detachable activated carbon plate 4, and the activated carbon plate 4 is attached to the inner wall of the purification chamber 32. By arranging the equalizing chamber 31, the waste gas after waste removal is first gathered in the equalizing chamber 31, and after gathering to a certain pressure, the elastic three-leaf valve 34 is simultaneously opened under pressure, and the waste gas in the equalizing chamber 31 is evenly distributed from the air holes 33 at the top of the equalizing chamber 31 into the purification chamber 32. Not only can the waste gas be evenly purified, but also the waste gas can avoid being purified through only part of the area of the activated carbon plate 4, thereby prolonging the service life of the activated carbon plate 4.
[0028] Please refer to Figure 4 As shown in the figure, two vertical installation grooves 321 are arranged on the two opposite side walls in the purification chamber 32, and two protruding parts 41 are arranged on the two opposite side edges of the activated carbon plate 4, and the protruding parts 41 are slidably fitted in the corresponding vertical installation grooves 321. Through the cooperation of the protruding parts 41 and the vertical installation grooves 321, the activated carbon plate 4 is convenient to install and remove.
[0029] The exhaust device of the muffle furnace provided by the utility model can not only timely exhaust the toxic or corrosive waste gas generated in the roasting process of the muffle furnace, avoid the waste gas from gathering in the hearth of the muffle furnace, cause the roasting of experimental materials to be insufficient and affect the subsequent experimental progress, but also solve the problems of the corrosion of the waste gas accumulated in the furnace on the furnace body and the health hazards of experimental personnel and potential safety hazards.
[0030] The preferred embodiments of the utility model are described in detail above, and should not be considered as limiting the implementation scope of the utility model. Any equivalent changes and improvements made within the scope of the utility model application should still belong to the patent coverage of the utility model.
Claims
1. An exhaust device for a muffle, characterized by: The exhaust pipe (1) is communicated with the exhaust hole opened in the back top of the muffle hearth, and the other end of the exhaust pipe (1) is communicated into the impurity removal box (2), the gas outlet of the impurity removal box (2) is connected with the gas inlet of the purification box (3) through the connecting pipe, the detachable activated carbon plate (4) is arranged in the purification box (3), the gas outlet of the purification box (3) is connected with the inlet end of the serpentine condenser pipe (5) through the connecting pipe, and the beaker (6) is placed below the outlet end of the serpentine condenser pipe (5).
2. A fume exhaust for a muffle as defined in claim 1, characterized in that: The exhaust pipe (1) is communicated with the exhaust hole opened in the back top of the muffle hearth, and the other end of the exhaust pipe (1) is communicated into the impurity removal box (2), the gas outlet of the impurity removal box (2) is connected with the gas inlet of the purification box (3) through the connecting pipe, the detachable activated carbon plate (4) is arranged in the purification box (3), the gas outlet of the purification box (3) is connected with the inlet end of the serpentine condenser pipe (5) through the connecting pipe, and the beaker (6) is placed below the outlet end of the serpentine condenser pipe (5).
3. A fume exhaust for a muffle as defined in claim 2, wherein: The top of the impurity removal box (2) is also provided with a blower (9), the air outlet of the blower (9) is connected with the air pipe (10), and the air pipe (10) extends to the bottom of the impurity removal box (2).
4. The exhaust apparatus for a muffle according to claim 1, characterized in that: The purification box (3) is provided with a pressure equalizing chamber (31) and a purification chamber (32) from bottom to top, a plurality of air holes (33) are uniformly arranged on the top of the pressure equalizing chamber (31), an elastic three-valve membrane (34) is arranged in each air hole (33), the activated carbon plate (4) is detachably installed in the purification chamber (32), and the activated carbon plate (4) is attached to the inner wall of the purification chamber (32).
5. A fume exhaust for a muffle as defined in claim 4, wherein: Two vertical installation grooves (321) are respectively arranged on two opposite side walls in the purification chamber (32), two protruding parts (41) are respectively arranged on two opposite side edges of the activated carbon plate (4), and the protruding parts (41) are slidably clamped in the corresponding vertical installation grooves (321).
6. A fume exhaust for a muffle as defined in claim 1, wherein: The gas pressure gauge (11) and the pressure reducing valve (12) are also installed on the exhaust pipe (1).