CN218485452U - Safety cabinet for hazardous chemical substances - Google Patents

Abstract

The application relates to safety cabinet technical field discloses a dangerization article safety cabinet, includes: cabinet body, filter cartridge, filter core and sealed lid. An air outlet housing is arranged at the top of the cabinet body; the filter box is arranged in the air outlet housing, the side wall of the filter box is provided with a replacing opening, and the side wall of the air outlet housing is provided with a dismounting opening corresponding to the replacing opening; the filter element can be arranged in the filter box in a sliding way and can be drawn out of the filter box through the replacing port; sealed lid detachable sets up in changing mouthful department, and can dismantle or install through the dismouting mouth. In this application, can reduce the degree of difficulty that the filter core was dismantled or was installed, improve the efficiency that the filter core was changed, reduce the danger of renew cartridge.

Description

Safety cabinet for hazardous chemical substances

Technical Field

The application relates to the technical field of safety cabinets, in particular to a dangerous chemical safety cabinet.

Background

At present, in the dangerization article production industry, the safety cabinet that is used for inflammable and explosive liquid dangerization article to store is by wide application, for reducing the dangerization article that store in the safety cabinet and volatilizing to cause the potential safety hazard in the external environment, improves the fail safe nature that dangerization was stored better, all is equipped with ventilation filtration system on a lot of dangerization article safety cabinets, filters volatile dangerization article through the filter core. The filter core belongs to a consumptive material class material as filtration system's main adsorption structure, needs regularly to change in order to guarantee good filtration efficiency.

There is a take ventilation filtration system's intelligent dangerization article cabinet among the correlation technique, set up the installation storehouse at the top of the cabinet body, the installation storehouse top is equipped with the apron, filtration system sets up in the installation storehouse, and filtration system comprises the fan system that top-down arranged, top layer filter core, filter core support, bottom filter core and bottom filter core support, when changing top layer filter core and bottom filter core, need ascend a height and dismantle the apron earlier, then dismantle top layer filter core and bottom filter core in proper order and change.

In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

the difficulty of filter core dismantlement is great, and danger is higher, and the inefficiency of filter core change.

SUMMERY OF THE UTILITY MODEL

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.

The embodiment of the disclosure provides a dangerous chemical safety cabinet to reduce the difficulty of filter core dismantlement or installation, improve the efficiency of filter core change, reduce the danger of renew cartridge.

In some embodiments, a hazardous chemical safety cabinet, comprises: the cabinet body, filter cartridge, filter core and sealed lid. The top of the cabinet body is provided with an air outlet housing; the filter box is arranged in the air outlet housing, the side wall of the filter box is provided with a replacing port, and the side wall of the air outlet housing is provided with a dismounting port corresponding to the replacing port; the filter element can be arranged in the filter box in a sliding way and can be drawn out of the filter box through the replacing port; sealed lid detachable sets up in change mouthful department, and can dismantle or install through the dismouting mouth.

Alternatively, in the case where the seal cover is installed at the replacement port to seal the replacement port, the seal cover also seals the removal port.

Optionally, the mouth of changing the mouth is followed the department and is equipped with the hem that turns up, is equipped with the screw hole on the hem, and the lateral wall of the mouth of dismouting mouth is followed the position that the department corresponds the screw hole and is equipped with first through-hole, and sealed covering is equipped with the second through-hole corresponding to the position of first through-hole, and sealed lid passes through what screw detachably set up in change mouth department, and under the circumstances of sealed lid installation, the screw passes second through-hole and first through-hole in proper order and inserts in the screw hole.

Optionally, the filter cartridge comprises: a first filter element and a second filter element. The first filter element can be arranged in the filter box in a sliding way; the second filter element is slidably arranged in the filter box and is positioned above the first filter element.

Optionally, the lateral wall of sealed lid towards the filter cartridge is equipped with and compresses tightly the seat, and under the condition that sealed lid was installed in change mouth department, compress tightly the tip butt that the seat stretched into in the filter cartridge and first filter core and second filter core.

Optionally, a flow gap is formed between the first filter element and the second filter element, and the pressing seat blocks one side of the flow gap under the condition that the pressing seat is abutted to the end portions of the first filter element and the second filter element.

Optionally, the inner walls of two opposite sides in the filter box are provided with guide rails, the guide rails are arranged along the direction perpendicular to the plane where the replacing port is located, and the filter element is arranged in the filter box through the guide rails in a slidable manner.

Optionally, the internal portion of cabinet is injectd the storing chamber, and the last lateral wall of the cabinet body is equipped with the vent, and the filter cartridge passes through vent and storing chamber intercommunication.

Optionally, the lateral wall is equipped with the air outlet on the filter cartridge, and the air outlet upside is equipped with the fan, and the air inlet end of fan passes through air outlet and the inside intercommunication of filter cartridge.

Optionally, an air outlet grille is arranged on the upper side wall of the air outlet housing and corresponds to the position of the fan.

The hazardous chemical substance safety cabinet provided by the embodiment of the disclosure can realize the following technical effects:

the side wall of the air outlet housing is provided with a disassembly and assembly opening corresponding to the replacement opening, the sealing cover can be disassembled or installed through the disassembly and assembly opening, when the filter element in the filter box needs to be replaced, the sealing cover is disassembled to open the replacement opening, the filter element is taken out through the replacement opening to be replaced, the taken filter element can be directly taken out from the disassembly and assembly opening, and a new filter element is inserted into the filter box from the disassembly and assembly opening and the replacement opening. When the filter element is disassembled or installed, the air outlet housing does not need to be disassembled, and only the sealing cover needs to be disassembled, so that the difficulty of disassembling or installing the filter element is reduced, the efficiency of replacing the filter element is improved, and the danger of replacing the filter element is reduced.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:

fig. 1 is an exploded view of a hazardous chemical safety cabinet provided in an embodiment of the present disclosure;

fig. 2 is an assembly schematic diagram of a hazardous chemical safety cabinet provided by the embodiment of the disclosure;

fig. 3 is an exploded schematic view of the air outlet casing, the filter cartridge and the sealing cover provided in the embodiment of the present disclosure;

FIG. 4 is a schematic view of a filter cartridge and filter cassette installation provided by embodiments of the present disclosure;

fig. 5 is a schematic cross-sectional view of a hazardous chemical substance safety cabinet provided in an embodiment of the disclosure;

fig. 6 is a schematic view of another filter cartridge and filter cassette assembly provided by embodiments of the present disclosure.

Reference numerals:

100. a cabinet body; 110. an air outlet housing; 111. assembling and disassembling the port; 112. a first through hole; 120. a storage chamber; 121. a vent; 122. a shelf; 123. an air inlet;

200. a filter cartridge; 210. replacing the port; 211. folding edges; 212. a threaded hole; 220. a guide rail; 230. an air outlet; 240. a fan; 250. a fan box; 260. an air outlet grille;

300. a filter element; 310. a first filter element; 320. a second filter element;

400. a sealing cover; 410. a second through hole; 420. a pressing seat; 430. a flow-through gap.

Detailed Description

So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.

The terms "first," "second," and the like in the description and in the claims, and the above-described drawings of embodiments of the present disclosure, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the present disclosure described herein may be made. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.

In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the disclosed embodiments and their examples and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation. Moreover, some of the above terms may be used in other meanings besides orientation or positional relationship, for example, the term "upper" may also be used in some cases to indicate a certain attaching or connecting relationship. The specific meanings of these terms in the embodiments of the present disclosure can be understood by those of ordinary skill in the art as appropriate.

In addition, the terms "disposed," "connected," and "secured" are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. Specific meanings of the above terms in the embodiments of the present disclosure can be understood by those of ordinary skill in the art according to specific situations.

The term "plurality" means two or more unless otherwise specified.

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

In the dangerization article production industry, the safety cabinet that is used for inflammable and explosive liquid dangerization article to store is by wide application, for the dangerization article that reduces to store in the safety cabinet volatilizees and causes the potential safety hazard in the external environment, improves the fail safe nature that dangerization was stored better, all is equipped with ventilation filtration system on a lot of dangerization article safety cabinets, filters volatile dangerization article through the filter core. The filter core belongs to a consumptive material class material as filtration system's main adsorption structure, needs regularly to change in order to guarantee good filtration efficiency. But traditional danger article cabinet is when the renew cartridge, need ascend a height and dismantle the apron earlier, then dismantle the multilayer filter core in proper order and change, and the degree of difficulty is great, and the security is lower.

With reference to fig. 1 to 6, an embodiment of the present disclosure provides a hazardous chemical substance safety cabinet, including: cabinet 100, filter cartridge 200, filter element 300 and sealing cover 400. The top of the cabinet 100 is provided with an air outlet casing 110; the filter cartridge 200 is arranged in the air outlet casing 110, the side wall of the filter cartridge 200 is provided with a replacement port 210, and the side wall of the air outlet casing 110 is provided with a disassembly and assembly port 111 at a position corresponding to the replacement port 210; the filter element 300 is slidably disposed in the filter cartridge 200, and the filter cartridge 200 can be drawn out through the replacement port 210; the sealing cover 400 is detachably disposed at the replacement port 210 and can be detached or attached through the detachment port 111.

By adopting the hazardous chemical substance safety cabinet provided by the embodiment of the disclosure, the side wall of the air outlet casing 110 is provided with the dismounting port 111 corresponding to the replacing port 210, the sealing cover 400 can be dismounted or mounted through the dismounting port 111, when the filter element 300 in the filter box 200 needs to be replaced, the sealing cover 400 is dismounted to open the replacing port 210, the filter element 300 is drawn out through the replacing port 210 for replacement, the drawn filter element 300 can be directly taken out from the dismounting port 111, and a new filter element 300 is inserted into the filter box 200 from the dismounting port 111 and the replacing port 210. When the filter element 300 is detached or installed, the air outlet housing 110 does not need to be detached, and only the sealing cover 400 needs to be detached, so that the difficulty in detaching or installing the filter element 300 is reduced, the replacement efficiency of the filter element 300 is improved, and the danger of replacing the filter element 300 is reduced.

Optionally, the air outlet casing 110 is a rectangular cover-shaped structure, the filter cartridge 200 is a rectangular box-shaped structure, and a lower sidewall of the filter cartridge 200 is attached to an upper sidewall of the cabinet 100. Like this, the filter cartridge 200 of rectangle box-like structure is convenient for the installation of filter core 300 and the circulation of air current, and the air-out housing 110 also sets up the installation of the filter cartridge 200 of being convenient for the rectangle, sets up the intercommunication of the filter cartridge 200 of being convenient for with the attached cabinet body 100's of the lower lateral wall of filter cartridge 200 last lateral wall setting and the cabinet body 100 internal environment.

Alternatively, the replacement opening 210 and the removal opening 111 are both rectangular opening-shaped structures, and the sealing cover 400 is a rectangular plate-shaped structure. Thus, the rectangular replacement port 210 and the disassembly/assembly port 111 facilitate the assembly and disassembly of the filter cartridge 300, and the rectangular plate-shaped sealing cover 400 can be adapted to the replacement port 210 and the disassembly port, thereby better sealing the replacement port 210.

Alternatively, in the case where the seal cap 400 is attached to the replacement port 210 to seal the replacement port 210, the seal cap 400 also seals the attachment/detachment port 111. Like this, because sealed lid 400 accessible dismouting mouth 111 is dismantled or the installation operation, for the leakproofness of guarantee dismouting mouth 111 department, avoid the air current in the air-out housing 110 to reveal from dismouting mouth 111, can be sealed with change mouthful 210 and dismouting mouth 111 simultaneously through sealed lid 400, improved the leakproofness of dismouting mouth 111 department, practiced thrift the cost.

Optionally, as shown in fig. 3, an outward-turned folded edge 211 is disposed at the rim of the replacement port 210, a threaded hole 212 is disposed on the folded edge 211, a first through hole 112 is disposed at a position corresponding to the threaded hole 212 on a side wall at the rim of the disassembly and assembly port 111, a second through hole 410 is disposed at a position corresponding to the first through hole 112 on the sealing cover 400, the sealing cover 400 is detachably disposed at the replacement port 210 by a screw, and in a case where the sealing cover 400 is installed, the screw sequentially passes through the second through hole 410 and the first through hole 112 and is inserted into the threaded hole 212. In this way, when the sealing cover 400 is mounted, the sealing cover 400 is mounted at the replacement port 210 by inserting screws into the screw holes 212 of the flaps 211 through the second through holes 410 of the sealing cover 400 and the first through holes 112 of the side walls of the outlet casing 110 in sequence, and the port edge of the attachment/detachment port 111 is sandwiched between the sealing cover 400 and the flaps 211, so that the sealing cover 400 seals the replacement port 210 and the attachment/detachment port 111 at the same time, thereby improving the sealing performance of the sealing cover 400. And under the extrusion of screw, make hem 211 closely attached at the inner wall of air-out housing 110, further improve the leakproofness of changing mouthful 210, avoid the volatile gas in filter cartridge 200 to reveal through the gap. When the filter element 300 needs to be replaced, the screw is only required to be unscrewed to complete the disassembly of the sealing cover 400, and at the moment, the replacement port 210 and the disassembly and assembly port 111 are simultaneously opened, so that the replacement operation of the filter element 300 is facilitated.

Alternatively, the replacement opening 210 and the removal opening 111 have the same size, and the sealing cover 400 has a larger area than the replacement opening 210 and the removal opening 111. Thus, the folded edge 211 arranged at the edge of the replacing port 210 can be attached to the inner wall of the air outlet housing 110 corresponding to the edge of the disassembling port 111, the sealing cover 400 is larger than the areas of the replacing port 210 and the disassembling port 111, the sealing cover 400 is convenient to be provided with the second through hole 410 corresponding to the first through hole 112, and the threaded hole 212, the first through hole 112 and the second through hole 410 can correspond to each other, so that the screws can be conveniently inserted and fixed.

Specifically, four edges of the replacement port 210 are provided with folded edges 211, each folded edge 211 is provided with a threaded hole 212, the port of the disassembly port 111 is provided with a first through hole 112 corresponding to the threaded hole 212 on each folded edge 211 along the corresponding side wall of the air outlet housing 110, the position of the sealing cover 400 corresponding to each first through hole 112 is provided with a second through hole 410, and each threaded hole 212, each first through hole 112 and each second through hole 410 are fixed by a screw. In this way, the screw holes 212, the first through holes 112, and the second through holes 410 corresponding to each other are provided in plural numbers, and are fixedly mounted by plural screws when the sealing cover 400 is mounted, and the opening edge of the replacement opening 210 can be pressed and attached to the inner wall of the outlet housing 110 by the screws, thereby further improving the sealing performance of the replacement opening 210 and the attachment/detachment opening 111.

Referring to fig. 4, in some embodiments, the filter cartridge 200 has guide rails 220 on two opposite inner walls, the guide rails 220 are disposed along a direction perpendicular to the plane of the replacement opening 210, and the filter cartridge 300 is slidably disposed in the filter cartridge 200 through the guide rails 220. Thus, when the filter cartridge 300 is installed in the filter cartridge 200, the filter cartridge 300 can be supported and guided by the guide rails 220 provided on the inner walls of the filter cartridge 200 at opposite sides thereof, thereby facilitating the sliding of the filter cartridge 300. The guide rail 220 is disposed in a direction perpendicular to the plane of the replacement port 210, so that the filter cartridge 300 can be smoothly taken out along the replacement port 210.

Specifically, the guide rail 220 is a strip-shaped structure protruding along the inner wall of the filter cartridge 200, and the length of the guide rail 220 is greater than or equal to one half of the length of the inner wall of the filter cartridge 200 and less than the length of the inner wall of the filter cartridge 200 along the direction perpendicular to the plane where the replacement port 210 is located. Like this, utilize the guide rail 220 of the relative both sides inner wall of filter cartridge 200 to form support and direction to the both ends of filter core 300, set up the length of guide rail 220 into being more than or equal to the half of filter cartridge 200 inner wall length, and be less than the length of filter cartridge 200 inner wall, can enough ensure that guide rail 220 forms stable support and direction to filter core 300, can avoid the too big installation that influences sealed lid 400 of length of guide rail 220 again, reduce cost.

As shown in fig. 5, in some embodiments, the cabinet 100 defines a storage cavity 120 therein, the upper sidewall of the cabinet 100 is provided with a vent 121, and the filter cartridge 200 is communicated with the storage cavity 120 through the vent 121. Like this, can store the dangerization article in storing chamber 120, the volatile gas that the dangerization article produced flows into filter box 200 through vent 121 in, is flowed out the external environment after being adsorbed by filter core 300 in the filter box 200, avoids a large amount of dangerization article volatile gas to flow into the external world and causes the incident.

Exemplarily, this dangerous chemical safety cabinet places and uses in the warehouse, deposit liquid dangerous chemical in the storing chamber 120 of the cabinet body 100, because liquid dangerous chemical can volatilize and give off for the gaseous warehouse outside storing chamber 120 for gaseous, cause to be filled with in the warehouse and repel a large amount of dangerous chemical volatile gas, cause the potential safety hazard, consequently side wall sets up vent 121 on the cabinet body 100, vent 121 and filter cartridge 200 intercommunication, dangerous chemical volatile gas flows in filter cartridge 200 through vent 121 and is adsorbed by filter core 300, when keeping ventilating in storing chamber 120, reduce the risk that dangerous chemical volatile gas distributes in the warehouse.

Alternatively, the cabinet 100 is a rectangular cabinet-like structure, and the storage chamber 120 is a rectangular cavity defined in the cabinet 100. Therefore, the cabinet body 100 and hazardous chemical substances in the storage cavity 120 can be conveniently placed, and the space utilization rate is high.

Specifically, be equipped with a plurality of goods shelves 122 in the storing chamber 120, a plurality of goods shelves 122 are all placed horizontally, and a plurality of goods shelves 122 evenly arrange along vertical direction. Like this, can place the dangerization article on a plurality of goods shelves 122, improve the inside space utilization in storing chamber 120.

Specifically, a cabinet door is connected to the front side of the cabinet 100, and the cabinet door can close or open the storage chamber 120. Can seal storing chamber 120 through the cabinet door, improve storing chamber 120's gas tightness, reduce the volatile gaseous of dangerization article and reveal from the cabinet door.

Optionally, an air outlet 230 is formed in the upper side wall of the filter box 200, a fan 240 is arranged on the upper side of the air outlet 230, and an air inlet end of the fan 240 is communicated with the inside of the filter box 200 through the air outlet 230. In this way, the airflow sucked into the filter box 200 under the action of the fan 240 is blown out from the air outlet end of the fan 240 to the external environment, negative pressure is formed in the filter box 200, and air in the storage cavity is sucked through the vent 121 under the action of the negative pressure, so that ventilation inside the storage cavity 120 is formed.

Optionally, the filter element 300 blocks an overflow surface within the filter cartridge 200. In this way, the air flow flowing into the filter cartridge 200 from the storage chamber 120 can be completely adsorbed by the filter element 300, and the risk of the volatile gas of the hazardous chemical substance being emitted to the external environment is further reduced.

Optionally, an air inlet 123 is disposed in a lower region of the storage cavity 120, and the air inlet 123 penetrates through a side wall of the cabinet 100 to communicate with the external environment. Like this, the air in the storing chamber 120 is inhaled in the filter cartridge 200 through ventilation opening 121, forms the negative pressure in the storing chamber 120, and the air that inhales in the external environment from air intake 123 under the effect of negative pressure supplyes into storing chamber 120 in, makes the interior ventilation of storing chamber 120, reduces the risk that the dangerization article were stored. Moreover, because the volatile gas of the hazardous chemical substance has relatively large mass and is easy to accumulate in the lower region of the storage cavity 120, the air inlet 123 is arranged in the lower region of the storage cavity 120, the volatile gas of the hazardous chemical substance is carried to the upper part of the storage cavity 120 by the introduced external air flow and flows out of the vent 121, and therefore the problem that a large amount of volatile gas of the hazardous chemical substance is accumulated in the storage cavity 120 and potential safety hazards are caused is avoided.

Optionally, a fan box 250 is disposed on an upper side wall of the filter box 200, the fan 240 is disposed in the fan box 250, the upper side wall of the fan box 250 has an opening, the fan 240 is a centrifugal fan, an axial air inlet end of the fan 240 is disposed toward the air outlet 230, and a radial air outlet end of the fan 240 faces an inner wall of the fan box 250. Like this, centrifugal fan can produce stronger negative pressure, sets up the air inlet end of fan 240 towards air outlet 230, makes the negative pressure direct action that fan 240 produced in air outlet 230 department, improves the airflow in the filter cartridge 200. Moreover, by arranging the fan box 250, the airflow blown out by the fan 240 is buffered in the fan box 250 and then blown out from the opening at the upper side of the fan box 250, so that the too fast air outlet flow is avoided.

Optionally, the air outlet grille 260 is disposed on the upper side wall of the air outlet casing 110, and the air outlet grille 260 is disposed corresponding to the position of the fan 240. Thus, the airflow blown out from the opening of the fan box 250 is blown out to the outside from the air outlet grille 260, and the arrangement of the air outlet grille 260 can reduce the dust in the outside air from falling into the air outlet cover shell 110.

Specifically, the air outlet grille 260 is disposed at an open position corresponding to the fan box 250. The air flow blown out by the fan box 250 can be directly blown to the air outlet grille 260.

As shown in connection with fig. 6, in some embodiments, cartridge 300 includes: a first cartridge 310 and a second cartridge 320. The first filter element 310 is slidably disposed within the filter cartridge 200; the second filter element 320 is slidably disposed in the filter cartridge 200 above the first filter element 310. Like this, because circulation from bottom to top of the interior air current of filter cartridge 200, through setting up first filter core 310 and the second filter core 320 of arranging from top to bottom, can carry out twice filtration to the air current of circulation in the filter cartridge 200, further adsorb volatile chemical in the air current, further reduce the risk that the volatile gas of dangerization article distributes in the external environment.

Optionally, the first filter element 310 and the second filter element 320 are plate-shaped structures with the same shape and size, and two sets of guide rails 220 are disposed on the inner walls of two opposite sides of the filter cassette 200, and respectively correspond to the supports of the first filter element 310 and the second filter element 320. In this way, the installation and removal of the first filter element 310 and the second filter element 320 is facilitated.

Specifically, the first filter element 310 and the second filter element 320 both block the flow surface in the filter cartridge 200. In this way, the air flow circulating in the filter cartridge 200 can completely pass through the first filter element 310 and the second filter element 320, and the volatile chemical substances in the air flow can be subjected to secondary adsorption filtration.

Optionally, the sealing cover 400 is provided with a pressing seat 420 towards the sidewall of the filter cassette 200, and in the case that the sealing cover 400 is installed at the replacement port 210, the pressing seat 420 protrudes into the filter cassette 200 to abut against the ends of the first filter element 310 and the second filter element 320. Like this, the setting that compresses tightly seat 420 can compress tightly first filter core 310 and second filter core 320 under the circumstances that sealed lid 400 was installed, makes first filter core 310 and second filter core 320 attached closely at the inner wall of filter box 200 in the one end of sealed lid 400 of dorsad, and first filter core 310 and second filter core 320 towards the one end of sealed lid 400 with compress tightly seat 420 in close contact with, avoid the gap between first filter core 310, second filter core 320 and the filter box 200 inner wall to cross the wind, thereby further improve the absorption filter effect of first filter core 310 and second filter core 320.

Optionally, the sidewall of the compression seat 420 facing the interior of the filter cassette 200 is removably coupled to the ends of the first filter element 310 and the second filter element 320. Thus, when the first filter element 310 and the second filter element 320 are disassembled, the sealing cover 400 is disassembled and pulled along the drawing direction of the first filter element 310 and the second filter element 320, so that the first filter element 310 and the second filter element 320 can be drawn out of the filter box 200 at the same time, a user does not need to contact the first filter element 310 and the second filter element 320, and the first filter element 310 and the second filter element 320 which are polluted are prevented from hurting the user. When the first filter element 310 and the second filter element 320 are inserted into the filter box 200 for installation, the sealing cover 400 can be positioned when the first filter element 310 and the second filter element 320 are installed in place, so that the second through hole 410 on the sealing cover 400 can be aligned with the first through hole 112 on the side wall of the air outlet bin, and installation of screws is facilitated.

It can be understood that the first filter element 310, the second filter element 320 and the sealing cover 400 can also be detachably connected by a screw structure, which is not described herein.

Alternatively, a flow gap 430 is provided between the first filter element 310 and the second filter element 320, and when the pressure seat 420 abuts on the end portions of the first filter element 310 and the second filter element 320, the pressure seat 420 closes one side of the flow gap 430. In this way, the flow gap 430 is provided between the first filter element 310 and the second filter element 320, even if there is a height difference between the upper side of the first filter element 310 and the lower side of the second filter element 320 in the vertical direction, so that the air flow in the filter box 200 flows into the flow gap 430 to be buffered when passing through the first filter element 310, and then passes through the second filter element 320, thereby reducing the loss of the air pressure. The side wall of the compressor can block one side of the flow gap 430, so that the leakage of the air flow flowing in the filter box 200 from one side of the flow gap is avoided, and the adsorption and filtration effects are improved.

Specifically, the side wall of the pressing base 420 can close the side of the flow gap 430 facing the sealing cover 400. In this way, since the flow gap 430 is blocked by the inner wall of the filter cassette 200 except the side facing the seal cover 400, the side wall of the pressing base 420 blocks the flow gap 430 facing the seal cover 400.

The above description and the drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and illustrated in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (10)

1. A hazardous chemical substance safety cabinet, characterized by, includes:

the top of the cabinet body (100) is provided with an air outlet cover (110);

the filter box (200) is arranged in the air outlet casing (110), the side wall of the filter box (200) is provided with a replacement port (210), and the side wall of the air outlet casing (110) is provided with a disassembly and assembly port (111) at a position corresponding to the replacement port (210);

a filter element (300) slidably disposed in the filter cartridge (200) and capable of being drawn out of the filter cartridge (200) through the replacement port (210);

and the sealing cover (400) is detachably arranged at the replacement opening (210) and can be detached or installed through the detaching opening (111).

2. The hazardous chemical safety cabinet of claim 1,

when the seal cap (400) is attached to the replacement port (210) and seals the replacement port (210), the seal cap (400) also seals the attachment/detachment port (111).

3. The hazardous chemical safety cabinet of claim 2,

the mouth of changing mouthful (210) is along the department and is equipped with hem (211) of turning up, be equipped with screw hole (212) on hem (211), the lateral wall of the mouth of dismouting mouth (111) along the department corresponds the position of screw hole (212) is equipped with first through-hole (112), the position that corresponds first through-hole (112) on sealed lid (400) is equipped with second through-hole (410), sealed lid (400) through screw detachably set up in change mouthful (210) department, under the condition of sealed lid (400) installation, the screw passes in proper order second through-hole (410) with first through-hole (112) inserts in screw hole (212).

4. The hazardous chemical safety cabinet according to claim 1, wherein the filter cartridge (300) comprises:

a first filter cartridge (310) slidably disposed within the filter cartridge (200);

the second filter element (320) is arranged in the filter box (200) in a sliding mode and is positioned above the first filter element (310).

5. A hazardous chemical substance safety cabinet according to claim 4,

the side wall of the sealing cover (400) facing the filter box (200) is provided with a pressing seat (420), and under the condition that the sealing cover (400) is installed at the replacement opening (210), the pressing seat (420) extends into the filter box (200) and is abutted to the end parts of the first filter element (310) and the second filter element (320).

6. The hazardous chemical safety cabinet of claim 5,

a flow gap (430) is provided between the first filter element (310) and the second filter element (320), and when the pressure seat (420) abuts against the end portions of the first filter element (310) and the second filter element (320), the pressure seat (420) closes one side of the flow gap (430).

7. The hazardous chemical substance safety cabinet according to any one of claims 1 to 6,

the filter cartridge is characterized in that guide rails (220) are arranged on the inner walls of two opposite sides in the filter cartridge (200), the guide rails (220) are arranged in the direction perpendicular to the plane where the replacing port (210) is located, and the filter element (300) is arranged in the filter cartridge (200) in a slidable mode through the guide rails (220).

8. A hazardous chemical substance safety cabinet according to any one of claims 1-6,

the storage cavity (120) is limited in the cabinet body (100), a vent (121) is arranged on the upper side wall of the cabinet body (100), and the filter box (200) is communicated with the storage cavity (120) through the vent (121).

9. The hazardous chemical safety cabinet of claim 8,

the side wall of the upper side of the filter box (200) is provided with an air outlet (230), the upper side of the air outlet (230) is provided with a fan (240), and the air inlet end of the fan (240) is communicated with the interior of the filter box (200) through the air outlet (230).

10. The hazardous chemical safety cabinet of claim 9,

the side wall is equipped with air-out grid (260) on air-out housing (110), air-out grid (260) correspond the position setting of fan (240).

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