Oil screen dust filter
By adopting rotatably connected door frame design and multi-layer filter element structure in the oil mesh dust filter, the problem of traditional oil mesh dust filter cannot be opened and closed is solved, which increases building flexibility and improves filtering performance and impact resistance, and provides Blockage monitoring and cleaning reminder functions.
Patent Information
- Application Number
- CN202421117707.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-05-21
AI Technical Summary
Traditional oil mesh dust filters cannot be opened and closed, resulting in environmental pollution during the replacement process, increasing the building area and limiting layout flexibility.
An oil mesh dust filter was designed, and its door frame and wall are rotatably connected by twisting and locking, allowing the door frame to open and close, and an oil groove is set at the bottom of the door frame to collect the oil stains of the filter element. The filter element includes multi-layer stainless steel wire mesh and activated carbon filter. The layer is equipped with air inlet and outlet pressure differential measuring tubes and micro pressure gauge to monitor the blockage.
The opening and closing function of the oil mesh dust filter is realized, the flexibility of building layout is increased, unnecessary building area is reduced, and the filter performance and impact resistance are improved. The filter element is promptly cleaned or replaced through the monitoring system.
Smart Images
Figure CN222324596U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of civil air defense engineering, in particular to an oil net dust filter. Background Art
[0002] Civil air defense projects, also known as civil air defense projects, refer to underground protective buildings built separately to ensure the shelter of personnel and materials, civil air defense command, and medical rescue during wartime, as well as basements built in combination with ground buildings that can be used for air defense during wartime. Figure 1 In the civil air defense project, it is necessary to set up air shafts, diffusion chambers, dust removal chambers and gas filtration chambers, etc. The dust removal chamber is a special room installed between the diffusion chamber and the gas filtration chamber and equipped with an oil mesh dust filter. A partition wall is required in the dust removal chamber to separate the dust removal chamber into a front dust removal chamber and a rear dust removal chamber, and then a vent is opened on the partition wall to connect the front dust removal chamber and the rear dust removal chamber.
[0003] The oil-net dust filter is mainly composed of a frame and a filter element arranged on the frame. Traditional oil-net dust filters usually nail the opposite sides or four sides of the door frame to the wall of the partition wall to cover the vent. Since the oil-net dust filter must be set in the direction of the shock wave (wind shaft → diffusion chamber → dust removal front chamber → dust removal back chamber), the frame of the oil-net dust filter must be installed in the dust removal front chamber. Since the oil-net dust filter cannot be opened and closed, in order to facilitate personnel to enter to install or clean the oil-net dust filter, an inspection door must be opened in the dust removal front chamber. At the same time, since the oil-net dust filter is a highly contaminated carrier, the environment will be polluted during the replacement process, so the inspection door cannot be opened to the clean area, but can only be opened to the gas filter room. When the wind shaft is far away from the gas filter room, in order to make the dust removal front chamber have a wall facing the gas filter room, the space of the dust removal front chamber must be increased, which not only increases unnecessary area, but also greatly limits the flexibility of the building layout. Utility Model Content
[0004] The main purpose of the utility model is to provide an oil mesh dust filter, aiming to solve the problem that the oil mesh dust filter cannot be opened and closed.
[0005] To achieve the above-mentioned purpose, the oil mesh dust filter proposed in the utility model is used to be installed on the partition wall of the dust removal room in the civil air defense project to block the vents on the partition wall. The oil mesh dust filter includes a door frame and a filter element. The door frame is enclosed to form a frame hole. A crossbeam is arranged in the frame hole to divide the frame hole into a plurality of window holes. A hinge is arranged on one side of the door frame to be rotatably connected to the wall, and a lock is arranged on the other side of the door frame to lock with the wall. The filter element is filled in the window hole.
[0006] In one embodiment, the door frame is used to be installed on a side of the partition wall facing the dust removal front chamber, and the coverage area of the frame hole is at least equal to the coverage area of the ventilation opening.
[0007] In one embodiment, the latch is rotatably connected to the door frame.
[0008] In one embodiment, transverse reinforcing ribs and longitudinal reinforcing ribs are provided in the window opening.
[0009] In one embodiment, the oil net dust filter further includes an oil tank, and the oil tank is fixedly mounted on the bottom of the door frame.
[0010] In one embodiment, the oil tank includes a bottom plate and side plates arranged around the edge of the bottom plate, a base is welded to the top surface of the bottom plate, and the base is fixedly connected to the door frame via fasteners.
[0011] In one embodiment, the filter element includes a filter screen layer, and the filter screen layer includes multiple layers of filter screens stacked together, and holes of adjacent filter screens are staggered.
[0012] In one embodiment, the filter screen is a stainless steel wire screen.
[0013] In one embodiment, the filter element further comprises an activated carbon filter layer, and the activated carbon filter layer is arranged on a side of the filter layer facing the dust removal rear chamber.
[0014] In one embodiment, the oil-net dust filter also includes an inlet pressure differential measuring tube, an outlet pressure differential measuring tube and a micromanometer. The inlet pressure differential measuring tube is arranged on the side of the filter element facing the dust removal front chamber, and the outlet pressure differential measuring tube is arranged on the side of the filter element facing the dust removal rear chamber. The micromanometer is electrically connected to the inlet pressure differential measuring tube and the outlet pressure differential measuring tube.
[0015] Traditional oil mesh dust filters usually nail the opposite sides or four sides of the door frame to the wall of the partition wall, which makes the oil mesh dust filter unable to open and close. Unlike traditional oil mesh dust filters, the oil mesh dust filter of the utility model is provided with a hinge on one side of the door frame, and a lock on the side of the door frame away from the hinge, so that the door frame can be rotated with the hinge as the axis to achieve opening and closing, and locked with the wall through the lock. It can be seen that the technical solution of the utility model changes the connection method between the oil mesh dust filter and the wall, and sets the connection method between the oil mesh dust filter and the wall to a rotating connection, thereby realizing the opening and closing of the oil mesh dust filter. Thus, the inspection door can be set in the dust removal front room or in the dust removal rear room. When the inspection door is set in the dust removal front room, the inspection door can be opened to directly enter the dust removal front room to clean or replace the oil net dust filter; when the inspection door is set in the dust removal rear room, the inspection door can be opened first to enter the dust removal rear room, and then the oil net dust filter can be opened to enter the dust removal front room, so as to clean or replace the oil net dust filter. It can be seen that this technical solution increases the flexibility of the building layout, thereby eliminating the need to increase unnecessary building area. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.
[0017] Figure 1 The architectural plan for setting the inspection door in the dust removal antechamber for civil air defense projects;
[0018] Figure 2 The architectural plan for setting the inspection door in the dust removal back room for civil air defense projects;
[0019] Figure 3 A top view of an embodiment of the oil screen dust filter provided by the utility model;
[0020] Figure 4 It is a vertical view of an embodiment of the oil net dust filter provided by the utility model;
[0021] Figure 5 A cross-sectional view of an embodiment of the oil screen dust filter provided by the utility model;
[0022] Figure 6 A window hole reinforcement diagram of an oil screen dust filter according to an embodiment of the present utility model;
[0023] Figure 7 This is a structural diagram of the oil tank of an embodiment of the oil net dust filter provided by the utility model.
[0024] Description of Figure Numbers:
[0025] 100. Oil screen dust filter; 1. Door frame; 11. Hinge; 12. Latch; 2. Crossbeam; 3. Filter element; 4. Transverse reinforcement rib; 5. Longitudinal reinforcement rib; 6. Oil tank; 7. Base.
[0026] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION
[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0028] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.
[0029] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.
[0030] The utility model provides an oil screen dust filter 100 .
[0031] The oil filter 100 is used to be installed on the partition wall of the dust removal room in the civil air defense project to block the vents on the partition wall. Figures 3 to 5 The oil net dust filter 100 includes a door frame 1 and a filter element 3. The door frame 1 is enclosed to form a frame hole. A crossbeam 2 is arranged in the frame hole to divide the frame hole into a plurality of window holes. A hinge 11 is arranged on one side of the door frame 1 to be rotatably connected to the wall. A lock 12 is arranged on the other side of the door frame 1 to lock with the wall. The filter element 3 is filled in the window hole.
[0032] It should be noted that a partition wall is provided in the dust removal room of the civil air defense project to separate the dust removal room into a front dust removal room and a rear dust removal room, and a vent is provided on the partition wall to connect the front dust removal room and the rear dust removal room. The oil mesh dust filter 100 is used to be installed on the partition wall of the dust removal room in the civil air defense project to block the vent. Specifically, the oil mesh dust filter 100 includes a door frame 1 and a filter element 3. The four sides of the door frame 1 are enclosed to form a frame hole. A plurality of beams 2 are provided in the frame hole to divide the large frame hole into a plurality of small window holes, so that the filter element 3 can be filled in the window hole. Traditional oil mesh dust filters usually nail the opposite sides or four sides of the door frame 1 to the wall surface of the partition wall, which makes it impossible for the oil mesh dust filter 100 to be opened and closed. Unlike the traditional oil mesh dust filter, the oil mesh dust filter 100 of the utility model is provided with a hinge 11 on one side of the door frame 1, and a lock 12 is provided on the side of the door frame 1 away from the hinge 11, so that the door frame 1 can be opened and closed by rotating with the hinge 11 as the axis, and locked with the wall through the lock 12. Among them, the lock 12 is rotatably connected with the door frame 1, and a buckle that locks with the lock 12 is installed on the wall of the partition wall. The lock and the buckle are mature products and are not described in detail here. In normal use, the door frame 1 is in a closed state, and when people need to pass through, the door frame 1 can be opened.
[0033] In summary, the technical solution of the utility model changes the connection mode between the oil-net dust filter 100 and the wall, and sets the connection mode between the oil-net dust filter 100 and the wall to a rotating connection, thereby realizing the opening and closing of the oil-net dust filter 100. Figure 1 As shown), it can also be set in the dust removal room (as shown Figure 2 When the inspection door is set in the dust removal front room, the inspection door can be opened to directly enter the dust removal front room to clean or replace the oil mesh dust filter 100; when the inspection door is set in the dust removal rear room, the inspection door can be opened first to enter the dust removal rear room, and then the oil mesh dust filter 100 can be opened to enter the dust removal front room, so as to clean or replace the oil mesh dust filter 100. It can be seen that the technical solution increases the flexibility of the building layout, thereby eliminating the need to increase unnecessary building area.
[0034] It should be noted that in order for the oil-net dust filter 100 to withstand the impact of shock waves, the oil-net dust filter 100 needs to be installed on the windward side of the airflow, that is, the door frame 1 in the oil-net dust filter 100 is used to be installed on the side of the partition wall facing the dust removal front room, and the coverage area of the frame hole is at least equal to the coverage area of the vent, that is, the coverage area of the frame hole is equal to or greater than the coverage area of the vent. When the oil-net dust filter 100 is in a closed state, the door frame 1 abuts against the wall of the partition. When the oil-net dust filter 100 is impacted by a shock wave, the partition wall can apply a top thrust to the door frame 1, so that the oil-net dust filter 100 has a certain impact resistance.
[0035] Reference Figure 6In order to further increase the impact resistance of the oil screen dust filter 100 , transverse reinforcing ribs 4 and longitudinal reinforcing ribs 5 are provided in the window hole. The transverse reinforcing ribs 4 and longitudinal reinforcing ribs 5 can both be flat steels for reinforcing the door frame 1 .
[0036] Reference Figure 7 The oil net dust filter 100 also includes an oil tank 6, which is fixedly mounted at the bottom of the door frame 1 and is used to collect oil from the filter element 3. Specifically, the oil tank 6 includes a bottom plate and a side plate arranged around the edge of the bottom plate, and a base 7 is welded on the top surface of the bottom plate. The base 7 can be an angle steel, an I-beam, a square steel, etc. The base 7 is fixedly connected to the door frame 1 through fasteners (such as rivets or screws, etc.), thereby achieving a fixed connection between the oil tank 6 and the door frame 1.
[0037] In the oil-mesh dust filter 100, the filter element 3 includes a filter layer (not shown), the filter layer includes multiple layers of stacked filters, the filter is a stainless steel wire mesh, and the holes of adjacent filters are staggered so that the air stays in the filter layer longer, effectively filtering dust.
[0038] Furthermore, the filter element 3 also includes an activated carbon filter layer (not shown), which is arranged on the side of the filter layer facing the dust removal chamber. Thus, the airflow first passes through the filter layer to filter dust, and then passes through the activated carbon filter layer to filter harmful gases, thereby increasing the filtering performance of the filter element 3.
[0039] The oil-mesh dust filter 100 also includes an air inlet pressure differential measuring tube (not marked), an air outlet pressure differential measuring tube (not marked) and a micromanometer (not marked). The air inlet pressure differential measuring tube is arranged on the side of the filter element 3 facing the dust removal front chamber, and the air outlet pressure differential measuring tube is arranged on the side of the filter element 3 facing the dust removal rear chamber. The micromanometer is electrically connected to the air inlet pressure differential measuring tube and the air outlet pressure differential measuring tube. Among them, the air inlet pressure differential measuring tube will detect the air flow resistance on the air inlet side, and the air outlet pressure differential measuring tube will detect the air flow resistance on the air outlet side. The micromanometer calculates the pressure difference between the dust removal front chamber and the dust removal rear chamber based on the air flow resistance on the air inlet side and the air flow resistance on the air outlet side. When the pressure difference between the two reaches the set pressure difference value, it indicates that the oil-mesh dust filter 100 is seriously clogged, thereby sounding an alarm to remind relevant personnel to clean or replace the oil-mesh dust filter 100. At this time, the maintenance personnel need to open the inspection door to enter the dust removal antechamber, remove the filter element 3 from the door frame 1, wash off the oil stains with an aqueous solution containing 10% alkali and a water temperature of 60-70°C, rinse with clean water and dry, install it into the inner frame in sequence, soak it in viscous oil (20# or 10# engine oil), and after rinsing for 3 to 5 minutes, it can be reused by entering the door frame 1.
[0040] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.
Claims
1. An oil screen dust filter, characterized in that: Used to be installed on the partition wall of the dust removal room in the civil air defense project to block the vents on the partition wall, the oil net dust filter includes: A door frame, wherein the door frame is enclosed to form a frame hole, a crossbeam is arranged in the frame hole to divide the frame hole into a plurality of window holes, a hinge is arranged on one side of the door frame to be rotatably connected to the wall, and a lock is arranged on the other side of the door frame to be locked with the wall; A filter element is filled in the window hole.
2. The oil screen dust filter according to claim 1, characterized in that: The door frame is used to be installed on a side of the partition wall facing the dust removal front chamber, and the coverage area of the frame hole is at least equal to the coverage area of the ventilation opening.
3. The oil screen dust filter according to claim 1, characterized in that: The lock is rotatably connected to the door frame.
4. The oil screen dust filter according to claim 1, characterized in that: Transverse reinforcing ribs and longitudinal reinforcing ribs are arranged in the window hole.
5. The oil screen dust filter according to claim 1, characterized in that: The oil net dust filter also includes an oil tank, and the oil tank is fixedly installed at the bottom of the door frame.
6. The oil screen dust filter according to claim 5, characterized in that: The oil tank comprises a bottom plate and side plates arranged around the edge of the bottom plate. A base is welded on the top surface of the bottom plate, and the base is fixedly connected to the door frame through fasteners.
7. The oil screen dust filter according to claim 1, characterized in that: The filter element comprises a filter screen layer, and the filter screen layer comprises multiple layers of filter screens stacked together, and holes of adjacent filter screens are staggered.
8. The oil screen dust filter according to claim 7, characterized in that: The filter screen is a stainless steel wire screen.
9. The oil screen dust filter according to claim 7, characterized in that: The filter element further comprises an activated carbon filter layer, and the activated carbon filter layer is arranged on a side of the filter layer facing the dust removal rear chamber.
10. The oil screen dust filter according to claim 1, characterized in that: The oil-net dust filter also includes an inlet pressure differential measuring tube, an outlet pressure differential measuring tube and a micromanometer. The inlet pressure differential measuring tube is arranged on the side of the filter element facing the dust removal front chamber, and the outlet pressure differential measuring tube is arranged on the side of the filter element facing the dust removal rear chamber. The micromanometer is electrically connected to the inlet pressure differential measuring tube and the outlet pressure differential measuring tube.