RTO maintenance protective door
By designing a square maintenance and protection door with a locking ring and warning device on the RTO incinerator, the problem of the maintenance door being unable to be locked was solved, improving maintenance safety and accident prevention capabilities.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENAN ZHONGTAI LIANCHUANG ENVIRONMENTAL PROTECTION EQUIP CO LTD
- Filing Date
- 2025-01-14
- Publication Date
- 2026-05-05
AI Technical Summary
The existing RTO incinerator's maintenance doors cannot be locked, posing a risk of unauthorized personnel accidentally trapping maintenance staff, resulting in low safety.
A square maintenance and protection door with hoisting angle steel, work warning signs and locking rings was designed. The door can be reliably opened by the door lock and is equipped with work warning lights and warning signs to prevent unauthorized personnel from operating it.
Ensure that the maintenance door is in the open position to prevent unauthorized personnel from closing it, reduce the probability of accidents, improve maintenance safety, and reduce the risk of misoperation by non-professionals through warning devices.
Smart Images

Figure CN224201715U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of RTO incinerator technology, and in particular to an RTO maintenance and protection door. Background Technology
[0002] RTO (Regenerative Thermal Oxidizer) is an energy-saving and environmentally friendly device for treating low- to medium-concentration volatile organic compounds (VOCs). It uses thermal oxidation to treat these VOCs, recovering heat through a ceramic regenerative bed heat exchanger. The device consists of a ceramic regenerative bed, automatic control valves, a combustion chamber, and a control system. The automatic control valves at the bottom of the regenerative bed are connected to the inlet and outlet manifolds respectively. The regenerative bed uses a reversing valve to alternately redirect the flow, retaining the heat from the high-temperature gas exiting the combustion chamber and preheating the VOCs entering the bed. The preheated VOCs, reaching a certain temperature (≥760℃), undergo oxidation in the combustion chamber, producing carbon dioxide and water, thus achieving purification. For ease of maintenance, most RTO incinerators have access doors on the furnace body; however, existing RTO incinerators typically have only a flat steel plate as the access door.
[0003] Existing technologies have the following problems:
[0004] Extensive searches revealed that patent application CN202022682059.7 discloses a maintenance door structure for an RTO incinerator. The main structure of this patent uses a riveting process for connection, simplifying the manufacturing process and eliminating extensive welding operations, thus avoiding environmental pollution and demonstrating high environmental friendliness, while also preventing harm to workers' health. However, the aforementioned patent still has some issues in practical use. The most obvious problem is that the square maintenance door cannot be locked during maintenance, making it susceptible to being closed by unauthorized personnel. This could trap maintenance personnel inside the regenerative oxidizer, compromising personnel safety and increasing the likelihood of accidents.
[0005] To address these shortcomings, we proposed an RTO maintenance protection door. Utility Model Content
[0006] The purpose of this utility model is to propose an RTO maintenance and protection door to overcome the shortcomings of existing technologies.
[0007] To achieve the above objectives, the present invention adopts the following technical solution: an RTO maintenance and protection door, comprising a regenerative thermal oxidizer, wherein a square maintenance and protection door is detachably installed on the regenerative thermal oxidizer, and a hoisting angle steel is welded to the square maintenance and protection door; a work warning sign is hoisted on the square maintenance and protection door; a work warning light is installed on the side of the square maintenance and protection door; a first locking ring is installed at the bottom of the square maintenance and protection door; a second locking ring is installed on the regenerative thermal oxidizer, and door locks are provided on the second locking ring and the first locking ring.
[0008] Preferably, the inner layer of the square maintenance and protection door is provided with a filling area.
[0009] Preferably, the length of the work warning sign is less than the length of the square maintenance and protection door.
[0010] Preferably, the filling area is rectangular, and the inner wall of the filling area is planar.
[0011] Preferably, the work warning light has a detachable battery installed on it.
[0012] Preferably, the square inspection and protection doors are connected by a riveting process.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] 1. In this utility model, by setting a door lock, the square maintenance and protection door is opened during maintenance, and the first and second locking rings installed at the lower end of the square maintenance and protection door are used in conjunction. Then, the door lock is used to lock the square maintenance and protection door. In this way, the square maintenance and protection door can always be kept open during the maintenance process and cannot be closed by unauthorized personnel, avoiding the risk of maintenance personnel being trapped in the regenerative oxidizer, ensuring personnel safety, and preventing accidents.
[0015] 2. By setting up work warning lights and work warning signs, this utility model can play a warning role during maintenance operations, prevent unauthorized personnel from operating the regenerative oxidizer, and reduce the probability of accidents. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a structural schematic diagram of an RTO maintenance and protection door proposed in this utility model;
[0018] Figure 2 This is a structural diagram of a square maintenance and protection door and a filling area.
[0019] Figure 3 This is a schematic diagram of the structure after the square maintenance and protection door is opened.
[0020] Legend:
[0021] 1. Regenerative oxidizer; 2. Square maintenance and protection door; 3. Hoisting angle steel; 4. Operation warning light; 5. Operation warning sign; 6. First locking ring; 7. Second locking ring; 8. Door lock; 9. Filling area. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "joined" should be interpreted broadly, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0024] Please refer to Figure 1-3 A regenerative thermal oxidizer (RTO) maintenance and protection door includes a regenerative thermal oxidizer 1, a square maintenance and protection door 2 detachably installed on the regenerative thermal oxidizer 1, a hoisting angle steel 3 welded to the square maintenance and protection door 2, a work warning sign 5 hoisted on the square maintenance and protection door 2, a work warning light 4 installed on the side of the square maintenance and protection door 2, a first locking ring 6 installed at the bottom of the square maintenance and protection door 2, a second locking ring 7 installed on the regenerative thermal oxidizer 1, and door locks 8 provided on the second locking ring 7 and the first locking ring 6.
[0025] During maintenance, the square maintenance protection door 2 is opened, and the first locking ring 6 and the second locking ring 7 installed at the lower end of the square maintenance protection door 2 are used in conjunction. Then, the door lock 8 is used to lock the square maintenance protection door 2. In this way, the square maintenance protection door 2 can always be kept open during the maintenance process and cannot be closed by unauthorized personnel, avoiding the risk of maintenance personnel being trapped inside the regenerative oxidizer 1, ensuring personnel safety, and preventing accidents. Secondly, by setting up work warning lights 4 and work warning signs 5, they can play a warning role during the maintenance operation, preventing unauthorized personnel from operating the regenerative oxidizer 1 and reducing the probability of accidents.
[0026] In this implementation plan: the inner layer of the square maintenance and protection door 2 is provided with a filling area 9.
[0027] Specifically, insulation material is installed in the filling zone 9, resulting in ideal insulation performance.
[0028] In this implementation plan: the length of the work warning sign 5 is less than the length of the square maintenance and protection door 2.
[0029] Specifically, the work warning sign 5 can be hung on the square maintenance and protection door 2 to serve as a warning.
[0030] In this implementation scheme: the packing area 9 is rectangular, and the inner wall of the packing area 9 is flat.
[0031] Specifically, it is beneficial to fill the insulation material in the filler area 9, where the insulation material is not limited and can be flexibly selected and applied according to actual needs.
[0032] In this implementation plan: the work warning light 4 has a detachable battery installed.
[0033] Specifically, the battery can be of model 18650 or similar, which can power the work warning light 4.
[0034] In this implementation plan: the square maintenance and protection door 2 is connected by riveting.
[0035] Specifically, the processing and manufacturing process is simple, and the main structure eliminates a large number of welding operations, avoiding environmental pollution, making it highly environmentally friendly and avoiding harm to workers' health.
[0036] Working principle: During use, the square maintenance protection door 2 is opened for maintenance, and the first locking ring 6 and the second locking ring 7 installed at the lower end of the square maintenance protection door 2 are engaged. Then, the door lock 8 is used to lock the square maintenance protection door 2. In this way, the square maintenance protection door 2 can always be kept open during the maintenance process and cannot be closed by unauthorized personnel, avoiding the risk of maintenance personnel being trapped inside the regenerative oxidizer 1, ensuring personnel safety, and preventing accidents. Secondly, by setting up work warning lights 4 and work warning signs 5, they can play a warning role during maintenance operations, preventing unauthorized personnel from operating the regenerative oxidizer 1 and reducing the probability of accidents.
[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A maintenance and protection door for an RTO (Regenerative Thermal Oxidizer), comprising a regenerative oxidizer (1), characterized in that, A square maintenance and protection door (2) is detachably installed on the regenerative oxidizer (1), and a hoisting angle steel (3) is welded on the square maintenance and protection door (2). A work warning sign (5) is hoisted on the square maintenance and protection door (2). A work warning light (4) is installed on the side of the square maintenance and protection door (2). A first locking ring (6) is installed at the bottom of the square maintenance and protection door (2). A second locking ring (7) is installed on the regenerative oxidizer (1), and door locks (8) are provided on the second locking ring (7) and the first locking ring (6).
2. The RTO maintenance protection door according to claim 1, characterized in that, The inner layer of the square maintenance and protection door (2) is provided with a filling area (9).
3. The RTO maintenance protection door according to claim 1, characterized in that, The length of the work warning sign (5) is less than the length of the square maintenance and protection door (2).
4. The RTO maintenance protection door according to claim 2, characterized in that, The packing area (9) is rectangular, and the inner wall of the packing area (9) is planar.
5. The RTO maintenance protection door according to claim 1, characterized in that, The work warning light (4) is detachably equipped with a battery.
6. The RTO maintenance protection door according to claim 1, characterized in that, The square maintenance and protection door (2) is connected by riveting.
Citation Information
Patent Citations
RTO incinerator access door structure
CN213955331U