Explosion-proof drying oven
By using the docking structure of elastic sealing ring, permanent magnet ring and magnetic fluid in the explosion-proof oven, the seal failure problem at the cable connection is solved, and the reliable connection and efficient sealing of the cable are achieved, ensuring the safety and applicability of the explosion-proof oven.
Patent Information
- Application Number
- CN202422639587.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2025-09-05
- Estimated Expiration
- 2034-10-30
AI Technical Summary
When existing explosion-proof ovens are used in hazardous environments, the sealing failure occurs due to thermal expansion and contraction of the cable connection position, which easily causes flammable and explosive gases or dust to enter the oven or control box, causing explosion risks and affecting production safety and personal safety.
The butt structure of flexible deformable elastic sealing ring and permanent magnet ring is adopted, combined with magnetic fluid, to achieve dynamic sealing between the cable and the interface, attracting magnetic fluid through the permanent magnet ring to make the sealing ring adapt to the tiny gap between the cable, and matching the clamping sleeve and the screw sleeve to achieve reliable connection of the cable.
It improves the overall sealing of the explosion-proof oven, reduces seal failure, prevents gas and dust from entering, ensures safety, is suitable for cables with multiple pipe diameters, is easy to install and disassemble, and improves work efficiency and versatility.
Smart Images
Figure CN223307211U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of ovens, in particular to an explosion-proof oven. Background Art
[0002] Explosion-proof ovens are special ovens used to dry items in explosive environments. They are mainly used for sample drying, baking and heating. Explosion-proof ovens are widely used in the fields of petroleum, chemical industry, scientific research, etc., and are suitable for organic drying, heat treatment, disinfection and other processes.
[0003] The existing explosion-proof drying oven is mainly composed of the following parts: box body, heating system, explosion-proof control box, etc. The working principle is: the heating tube generates heat, and the air in the box is heated by heat radiation and heat convection. The fan circulates the hot air. When the temperature reaches the set value, the heating tube stops heating, and the moisture in the items evaporates into water vapor and is discharged by the fan. At the same time, fresh air is inhaled and circulated until the items are dried. Safety is ensured by explosion-proof measures during the process.
[0004] Currently, the existing technology has the following shortcomings: For explosion-proof ovens used in hazardous environments, the sealing of the cable connection position is of paramount importance. However, the thermal expansion and contraction of the cable can cause the sealing to fail. A loose seal at the cable connection can easily allow flammable and explosive gases or dust to enter the oven or control box, causing an explosion hazard and seriously affecting the production safety of the enterprise and the personal safety of workers. Therefore, an explosion-proof oven is proposed to address the above problems. Utility Model Content
[0005] In order to make up for the shortcomings of existing explosion-proof ovens, an explosion-proof oven is proposed to solve the problem that the cable sealing failure due to thermal expansion and contraction and the loose sealing of the cable connection can easily cause flammable and explosive gases or dust to enter the oven or control box, causing explosion hazards and seriously affecting the production safety of the enterprise and the personal safety of workers.
[0006] The technical solution adopted by the utility model to solve the technical problem is as follows: an explosion-proof oven described in the utility model includes a box body, a sealed door is rotatably assembled at a door opening on one side of the box body through a hinge, a control box is fixedly assembled on one side of the box body, the cables between the control box and the box body are butt-jointed and assembled through a butt-jointed structure, a docking port for connecting the cable is fixedly provided on one side of the box body and the control box, a flexibly deformable elastic sealing ring is sleeved on the cable at the butt joint, a cavity is defined in the elastic sealing ring, and the cavity is filled with a magnetic fluid for deformation of the elastic sealing ring, and a permanent magnet ring for attracting the magnetic fluid is fixedly provided on the docking port.
[0007] Preferably, the docking structure includes a docking sleeve and a tightening sleeve for clamping the cable with the docking sleeve. The docking sleeve includes a fixing sleeve and a clamping sleeve. The fixing sleeve is fixedly connected to the docking port through a thread. One end of the clamping sleeve is a clamping part, and the clamping sleeve is provided with an inverted cone-shaped closing end.
[0008] Preferably, the tightening sleeve is connected to the clamping sleeve by threaded engagement.
[0009] Preferably, a plurality of notches for changing the diameter of the clamping sleeve are equidistantly provided in a circular array on the circumference of the clamping sleeve.
[0010] Preferably, the tightening sleeve is provided with a driving surface that cooperates with the inverted conical closing end and is used to drive the clamping sleeve to contract.
[0011] Preferably, a sealing ring is sleeved between the cable and the mating surface of the clamping portion.
[0012] Preferably, a heat insulating layer is fixedly provided between the assembly surfaces of the control box and the box body for heat insulating the two.
[0013] Beneficial effects of the utility model:
[0014] 1. The utility model provides an elastic sealing ring, a magnetic fluid, and a permanent magnet ring, so that the elastic sealing ring can be deformed and fit tightly to the cable and the docking port, and can adapt to the tiny gap at the cable docking point to achieve dynamic sealing. This design not only improves the sealing effect, but also reduces the problem of sealing failure caused by thermal expansion and contraction of the cable, effectively preventing gas, dust, etc. from entering the box or control box, greatly improving the overall sealing of the explosion-proof oven. At the same time, compared with existing fixed sealing accessories, the sealing docking structure of the utility model can be applied to a variety of cables with different diameters, and has a wider range of applications;
[0015] The docking structure design of the utility model makes the installation and removal of cables very convenient, does not require complicated tools and operating procedures, improves work efficiency, and the fixing and clamping method is simple and reliable, can adapt to cables of different diameters, and improves the versatility of the docking structure. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:
[0017] Figure 1 This is a cross-sectional view of the assembly of the cable and the docking structure of the utility model;
[0018] Figure 2 This utility model is relatively Figure 1A bottom-view cross-sectional view of the cable and docking structure;
[0019] Figure 3 It is a structural diagram of the entire utility model;
[0020] Legend:
[0021] 1. Box body; 2. Sealing door; 3. Control box; 301. Docking port; 3011. Permanent magnet ring; 4. Docking structure; 401. Docking sleeve; 4011. Fixing sleeve; 4012. Clamping sleeve; 40121. Clamping part; 40122. Inverted cone-shaped closing end; 402. Tightening sleeve; 4021. Driving surface; 5. Cable; 6. Elastic sealing ring; 601. Magnetic fluid; 7. Notch; 8. Sealing ring; 9. Thermal insulation layer. DETAILED DESCRIPTION
[0022] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0023] Specific examples are given below.
[0024] See also Figure 1-Figure 3 The explosion-proof oven described in the present invention comprises a box body 1, a sealed door 2 is assembled at a door opening on one side of the box body 1 through a hinge, a control box 3 is fixedly assembled on one side of the box body 1, and a cable 5 between the control box 3 and the box body 1 is docked and assembled through a docking structure 4, and a docking port 301 for connecting the cable 5 is fixedly provided on one side of the box body 1 and the control box 3, and a flexibly deformable elastic sealing ring 6 is sleeved on the cable 5 at the docking position, a cavity is opened in the elastic sealing ring 6, and the cavity is filled with a magnetic fluid 601 for deformation of the elastic sealing ring 6, and a permanent magnet ring 3011 for attracting the magnetic fluid 601 is fixedly provided on the docking port 301;
[0025] The butt joint structure 4 comprises a butt joint sleeve 401 and a tightening sleeve 402 for clamping the butt joint sleeve 401 to the cable 5. The butt joint sleeve 401 comprises a fixing sleeve 4011 and a clamping sleeve 4012. The fixing sleeve 4011 is fixedly connected to the butt joint 301 by a thread. One end of the clamping sleeve 4012 is a clamping portion 40121. The clamping sleeve 4012 is provided with an inverted conical closing 40122. The tightening sleeve 402 is assembled and connected with the clamping sleeve 4012 by threaded cooperation. The circumference of the clamping sleeve 4012 is equidistantly provided with a plurality of notches 7 for reducing the diameter of the clamping sleeve 4012 in an annular array. The tightening sleeve 402 is provided with a driving surface 4021 for driving the clamping sleeve 4012 to contract, which cooperates with the inverted conical closing 40122. A sealing ring 8 is provided between the mating surface of the cable 5 and the clamping portion 40121. The cable 5 is connected by the butt joint structure 4 Connected between the box body 1 and the control box 3, the staff first puts the docking sleeve 401 on the end of the cable 5, and then puts the elastic sealing ring 6 on the end of the cable 5, and then docks the whole with the docking port 301, screws the fixing sleeve 4011 on the docking port 301, and tightens it. At the same time, the elastic sealing ring 6 moves to the permanent magnet ring 3011, and the magnetic fluid 601 filled in the elastic sealing ring 6 is attracted by the permanent magnet ring 3011, so that the elastic sealing ring 6 is deformed and fits tightly to the cable 5 and the docking port 301, and can adapt to the tiny gap at the docking point of the cable 5 to achieve dynamic sealing. This design not only improves the sealing effect, but also reduces the problem of sealing failure caused by thermal expansion and contraction of the cable 5, effectively prevents gas, dust, etc. from entering the box body 1 or the control box 3, and greatly improves the overall sealing of the explosion-proof oven. Compared with the existing technology, this sealing method is more reliable and can better meet the explosion-proof requirements.
[0026] After that, the staff will put the tightening sleeve 402 into the cable 5 to the clamping sleeve 4012, and screw the tightening sleeve 402 onto the clamping sleeve 4012. At the same time, the tightening sleeve 402 drives the driving surface 4021 to move toward the inverted conical closing end 40122. As the tightening sleeve 402 is continuously screwed in, the driving surface 4021 applies pressure to the inverted conical closing end 40122, causing the clamping portion 40121 to continuously shrink until the clamping portion 40121 completes the fixation of the cable 5. The driving surface 4021 cooperates with the inverted conical closing end 40122 to ensure that the clamping portion 40121 applies uniform pressure to the cable 5. This clamping method is simple and reliable and can adapt to cables 5 of different diameters, thereby improving the versatility of the docking structure 4. At the same time, the sealing ring 8 arranged on the cable 5 at the clamping portion 40121 is continuously deformed by the clamping portion 40121, thereby further improving the sealing performance of the cable 5.
[0027] Furthermore, a heat-insulating layer 9 is fixedly provided between the assembly surfaces of the control box 3 and the box body 1 for heat insulation between the two. When in operation, the heat-insulating layer 9 is made of ceramic fiber, which effectively blocks the high temperature inside the oven box body 1 from being transmitted to the control box 3, thereby protecting the electronic components in the control box 3 and extending the service life of the control box 3.
[0028] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
[0029] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention as claimed.
Claims
1. An explosion-proof oven, comprising a box body (1), a sealed door (2) rotatably mounted on one side of the box body (1) through a hinge, and a control box (3) fixedly mounted on one side of the box body (1), characterized in that: The cable (5) between the control box (3) and the box body (1) is butt-jointed and assembled via a butt-jointing structure (4); a butt-jointing interface (301) for connecting the cable (5) is fixedly provided on one side of the box body (1) and the control box (3); a flexibly deformable elastic sealing ring (6) is sleeved on the cable (5) at the butt-jointing position; a cavity is provided in the elastic sealing ring (6), and the cavity is filled with a magnetic fluid (601) for deforming the elastic sealing ring (6); and a permanent magnet ring (3011) for attracting the magnetic fluid (601) is fixedly provided on the butt-jointing interface (301).
2. The explosion-proof oven according to claim 1, characterized in that: The docking structure (4) comprises a docking sleeve (401) and a tightening sleeve (402) for clamping the cable (5) with the docking sleeve (401); the docking sleeve (401) comprises a fixing sleeve (4011) and a clamping sleeve (4012); the fixing sleeve (4011) is fixedly connected to the docking port (301) via a thread; one end of the clamping sleeve (4012) is a clamping portion (40121); and the clamping sleeve (4012) is provided with an inverted conical closing end (40122).
3. The explosion-proof oven according to claim 2, characterized in that: The tightening sleeve (402) is assembled and connected with the clamping sleeve (4012) through threaded engagement.
4. The explosion-proof oven according to claim 2, characterized in that: The circumferential side of the clamping sleeve (4012) is provided with a plurality of notches (7) at equal intervals in a circular array for changing the diameter of the clamping sleeve (4012).
5. The explosion-proof oven according to claim 2, characterized in that: The tightening sleeve (402) is provided with a driving surface (4021) that cooperates with the inverted conical closing opening (40122) and is used to drive the clamping sleeve (4012) to contract.
6. The explosion-proof oven according to claim 2, characterized in that: A sealing ring (8) is mounted between the cable (5) and the mating surface of the clamping portion (40121).
7. The explosion-proof oven according to claim 1, characterized in that: A heat insulating layer (9) is fixedly provided between the assembly surfaces of the control box (3) and the box body (1) for insulating the two.