Biosafety cart

Abstract

The utility model belongs to the technical field of medical equipment, and particularly relates to a biological safety cart which comprises an isolation cabin, a cabin door is arranged on the isolation cabin, a closed isolation space is defined by the isolation cabin and the cabin door, and a negative pressure disinfection mechanism and a whole cart disinfection mechanism are integrated on the isolation cabin. The negative pressure disinfection mechanism and the whole vehicle disinfection mechanism are arranged on the vehicle body, the power source is matched with the negative pressure disinfection mechanism and the whole vehicle disinfection mechanism, and the anti-backflow type all-directional spraying disinfection biological safety type cart with the structure is simple in structure, good in disinfection effect and capable of being used for transporting animal carcasses suffering from highly pathogenic infectious diseases (or carrying highly pathogenic microorganisms and viruses).

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment, and in particular relates to a biosafety cart. Background Art

[0002] Currently, the basic form of transporting bodies in hospitals, funeral homes, and nursing homes is manual cart pushing. This carries risks such as human error, accidental vehicle collisions, and the spread of bacteria / viruses carried by the body. Moreover, due to the simple covering, there is a lack of spatial isolation between the body and other patients or family members in the hospital, which can cause greater sensory or psychological distress.

[0003] To this end, the Chinese invention patent with application number CN202210124090.X discloses an intelligent body transfer cabin for use in internal areas of hospitals, funeral homes, and nursing homes. It uses a rechargeable battery as a power source, a 4G / 5G / 6G (or higher iteration) Internet of Things platform / blockchain as a data guide, and chemical or physical methods for sterilization and disinfection, achieving efficient and safe body transfer.

[0004] For another example, the Chinese utility model patent with application number CN202121959181.2 discloses a transfer cart that is convenient for disinfection, isolation and infection prevention, including a reception cabin, universal rollers evenly arranged on the bottom of the reception cabin, a cabin door sealed and installed on the side of the reception cabin, a push-pull armrest provided on the end face of the reception cabin, a seat and a breathable filter device provided inside the reception cabin, the breathable filter device provided on the inner wall of the reception cabin, and the seat provided close to the inner wall of one end of the reception cabin; a whole vehicle disinfection device, a negative pressure disinfection device and a power supply mechanism are also provided on the reception cabin, and the whole vehicle disinfection device and the negative pressure disinfection device are both electrically connected to the power supply mechanism. The device has the characteristics of easy use and high disinfection efficiency.

[0005] However, when transporting animal carcasses suffering from highly pathogenic infectious diseases (or carrying highly pathogenic microorganisms or viruses), such as transporting them from the wild to an anatomical laboratory, higher requirements are placed on the sealing performance and disinfection effect of the transport vehicle during the transportation of the carcasses. In the above scheme, on the one hand, the equipment is complex and the production cost is high. On the other hand, the above device cannot meet the transportation requirements of animal carcasses with highly pathogenic infectious diseases. Utility Model Content

[0006] The purpose of the present invention is to provide a biosafety cart to partially alleviate or solve the above-mentioned problems and improve the disinfection effect.

[0007] In order to solve the above-mentioned technical problems, the present invention specifically adopts the following technical solutions:

[0008] A biosafety cart, comprising an isolation cabin, the isolation cabin being provided with a hatch, the isolation cabin and the hatch enclosing a closed isolation space, the isolation cabin being integrated with a negative pressure disinfection mechanism and a whole vehicle disinfection mechanism, and a power supply cooperating with the negative pressure disinfection mechanism and the whole vehicle disinfection mechanism;

[0009] The negative pressure disinfection mechanism includes an air disinfector, and the isolation cabin is provided with an exhaust pipe connected to the exhaust end of the air disinfector, and the air inlet end of the exhaust pipe is provided at the top of the isolation cabin and communicates with the isolation space;

[0010] The whole vehicle disinfection mechanism includes a disinfectant tank and at least one nozzle, and a disinfectant pipe connecting the disinfectant tank and the nozzle. A water pump is provided on the disinfectant pipe. The nozzle is detachably connected to the disinfectant pipe. The liquid outlet end of the nozzle is located in the isolation space. The nozzle is U-shaped, and the liquid outlet end of the nozzle is higher than the liquid inlet end of the nozzle.

[0011] As an improvement, the disinfectant pipeline has a second connecting section docked with the nozzle; correspondingly, the nozzle includes, from the liquid inlet end to the liquid outlet end, a first connecting section, a bending section and a spraying section; wherein, the first connecting section and the second connecting section are connected in sequence to form a first bend portion bent along a first direction; the bending section extends a certain length along the liquid outlet end of the first connecting section, and continues to bend along a second direction opposite to the first direction to form a second bend portion; the spraying section extends outward for a certain length along the liquid outlet section of the bending section, and continues to bend along the first direction to form a third bend portion; wherein, the height of the second bend portion is lower than the first bend portion and the third bend portion, so that the second bend portion and the first bend portion can sequentially prevent the disinfectant from backflow.

[0012] As an improvement, a plurality of support rods are provided inside the isolation cabin, and the support rods are located at the bottom of the isolation space. A liquid guide groove is provided on the support rods, and the diameter of the liquid guide groove changes from small to large and then decreases from the first end to the second end, and the height of the bottom of the liquid guide groove changes from high to low and then to high from the first end to the second end, so that the disinfectant spray condensate in the isolation space can flow along the two ends of the liquid guide groove into the middle part of the liquid guide groove and be collected.

[0013] As an improvement, slide rails are respectively provided on both sides of the isolation cabin, and the bottom of the slide rails extends to both sides to form a liquid cavity. Slide blocks cooperating with the slide rails are respectively provided on both sides of the cabin door. When the cabin door is installed on the slide rails, the two side walls of the slide block are respectively fitted with the two side walls of the slide rails, and the first end of the slide block extends into the liquid cavity.

[0014] As an improvement, the thickness of the slider is smaller than the thickness of the hatch, so that the combined part of the slider and the hatch forms a boss; when the hatch is installed on the slide rail, the boss is clamped on the top of the slide rail to limit the height of the slider, so that a liquid guide channel is formed between the first end of the slider and the bottom of the liquid chamber.

[0015] As an improvement, a plurality of nozzles are provided along the circumference of the bottom of the isolation cabin.

[0016] As an improvement, the inner diameter of the nozzle is smaller than the inner diameter of the disinfectant pipeline.

[0017] As an improvement, the plurality of support rods are evenly arranged along the length direction of the isolation cabin and parallel to the width direction of the isolation cabin.

[0018] As an improvement, a plurality of moving wheels are provided at the bottom of the isolation cabin.

[0019] As an improvement, a functional box is provided at the first end of the isolation cabin, and the negative pressure disinfection mechanism, disinfectant tank and power supply are all arranged inside the functional box. At least one switch for controlling the start and stop of the negative pressure disinfection mechanism and the whole vehicle disinfection mechanism is provided outside the functional box.

[0020] As an improvement, the nozzle and the disinfectant pipeline are threadedly connected, wherein the liquid inlet end of the nozzle is provided with an external thread, and the liquid outlet end of the disinfectant pipeline is provided with an internal thread matching the external thread.

[0021] The principle and beneficial technical effect of the present utility model are: the present application provides a biosafety cart with anti-backflow all-round spraying and disinfection.

[0022] On the one hand, multiple nozzles are set at the bottom of the isolation cabin, which can evenly distribute the disinfectant spray to all parts of the isolation space. At the same time, an exhaust port is set at the top of the isolation cabin. While injecting the disinfectant spray through the nozzle, the air disinfector is turned on to exhaust air, which can make the spray entering the isolation space have a "bottom-to-top" flow path, thereby extending the time the spray stays in the isolation space, preventing the spray from quickly condensing into condensation droplets in the isolation space, and increasing the coverage area of ​​the spray to ensure better disinfection effect.

[0023] At the same time, after the vehicle disinfection mechanism is turned off, the design of the U-shaped nozzle can make the disinfectant that has not yet been sprayed out from the liquid outlet of the nozzle stay in the bent part of the U-shaped nozzle, thereby blocking the disinfectant pipeline and preventing the virus from flowing back into the disinfectant tank with the disinfectant and contaminating it. Specifically, the U-shaped nozzle has a nozzle design with dual flow limiting functions. When the disinfectant flows back, especially when the virus density in the isolation space is high, causing the virus to partially contaminate the spraying section, the virus may enter the interior of the nozzle under the influence of the disinfectant. At this time, the second bend can limit the flow of the disinfectant flowing back in the spraying section for the first time; and when the amount of disinfectant flowing back or the amount of virus entering is large, the first bend can continue to limit the flow of the disinfectant for the second time.

[0024] Furthermore, the design of the support rod can keep the body in a suspended state, avoiding large-scale contact between the body and the bottom of the isolation cabin, resulting in a large range of disinfection dead corners. At the same time, the design of the liquid guide groove on the support rod can enable the disinfectant spray to condense and flow along the two ends of the liquid guide groove to its groove part to be collected, avoiding the condensate from dispersing everywhere or even causing secondary contamination.

[0025] Furthermore, a liquid tank is provided at the bottom of the guide rail, into which disinfectant is injected when in use, which can disinfect some blind corners of the cart (such as the slide rails and sliders), further increasing the sealing inside the isolation space and preventing the virus from escaping from the connection between the cabin door and the isolation cabin.

[0026] It is worth noting that the biosafety disinfection solution adopted in this application makes the cart particularly suitable for transporting animal carcasses suffering from highly pathogenic infectious diseases (or carrying highly pathogenic microorganisms or viruses), such as transporting them from the wild to the anatomy laboratory to facilitate the completion of experimental dissections. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the embodiments or the description of the prior art. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the various elements or parts are not necessarily drawn according to the actual scale. Obviously, the drawings described below are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without inventive work.

[0028] Figure 1 This is a schematic diagram of the three-dimensional structure of a biosafety cart in an embodiment of the present utility model;

[0029] Figure 2 This is a top view of a biosafety cart in an embodiment of the present utility model;

[0030] Figure 3 This is a schematic diagram of the partial structure of the first end of the biosafety cart in an embodiment of the present utility model;

[0031] Figure 4 This is a schematic diagram of the partial structure of the nozzle in the embodiment of the present utility model;

[0032] Figure 5 This is a schematic diagram of the partial structure of the support rod in the embodiment of the utility model;

[0033] Figure 6 This is a schematic diagram of the partial structure of the slide rail in the embodiment of the present utility model;

[0034] Figure 7 The figure is a partial structural diagram of the nozzle and the disinfectant pipeline in some specific embodiments of the present invention.

[0035] Markings in the figure: 1. Isolation cabin; 101. Slide rail; 102. Liquid chamber; 2. Hatch door; 201. Slider; 3. Air inlet end of the exhaust pipe; 4. Nozzle; 401. First connecting section; 402. Bending section; 403. Spraying section; 5. Disinfectant pipeline; 501. Second connecting section; 6. Support rod; 601. Liquid guide trough; 7. Moving wheel; 8. Function box. DETAILED DESCRIPTION

[0036] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. 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.

[0037] In this document, the use of suffixes such as "module", "component" or "unit" to indicate elements is only for the purpose of facilitating the description of the present invention and has no specific meaning in itself. Therefore, "module", "component" or "unit" can be used interchangeably. In this document, the orientation or positional relationship indicated by the terms "upper", "lower", "inside", "outside", "front", "back", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of describing the present invention and simplifying the description. It does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0038] As used herein, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc., should be understood broadly. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, an indirect connection through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model. As used herein, "plurality" means two or more, including two, three, four, five, etc.

[0039] Example 1 is basically as follows Figure 1-Figure 7 As shown:

[0040] This application provides a biosafety cart, see Figure 1-Figure 3 , comprising an isolation cabin 1, the isolation cabin 1 being provided with a hatch 2, the isolation cabin 1 and the hatch 2 enclosing a closed isolation space, the isolation cabin 1 being integrated with a negative pressure disinfection mechanism and a whole vehicle disinfection mechanism, and a power supply cooperating with the negative pressure disinfection mechanism and the whole vehicle disinfection mechanism;

[0041] The negative pressure disinfection mechanism includes an air disinfector, and the isolation cabin 1 is provided with an exhaust pipe connected to the exhaust end of the air disinfector, and the air inlet end 3 of the exhaust pipe is provided at the top of the isolation cabin 1 and communicates with the isolation space;

[0042] The vehicle disinfection mechanism includes a disinfectant tank and at least one nozzle 4, as well as a disinfectant pipe 5 connecting the disinfectant tank and the nozzle 4. A water pump is provided on the disinfectant pipe 5. The nozzle 4 is detachably connected to the disinfectant pipe 5. The liquid outlet of the nozzle 4 is located within the isolation space. The nozzle 4 is U-shaped, and the liquid outlet of the nozzle 4 is higher than the liquid inlet of the nozzle 4. When the water pump is operating, the disinfectant in the disinfectant tank can be pumped into the nozzle 4 through the disinfectant pipe 5 and sprayed out from the liquid outlet of the nozzle 4.

[0043] In some embodiments, see Figure 7 The present invention provides a nozzle design with dual flow limiting functions. In this embodiment, the two ends of the "segment" along the direction of the disinfectant injection flow are respectively called the liquid inlet end and the liquid outlet end.

[0044] The disinfectant pipeline has a second connecting section 501 that interfaces with the nozzle. Accordingly, the nozzle can be sequentially divided from the liquid inlet to the liquid outlet into a first connecting section 401, a curved section 402, and a spraying section 403. The first connecting section 401 and the second connecting section are sequentially connected to form a first curved portion that bends in a first direction (for example, the first curved portion is formed in a U-shape, with the opening of the U facing the bottom of the isolation chamber 1). The curved section 402 extends a certain distance along the liquid outlet of the first connecting section and further bends in a second direction opposite to the first direction to form a second curved portion (for example, the second curved portion is also formed in a U-shape, with the opening of the U facing the top of the isolation chamber 1). The spraying section extends a certain distance outward from the liquid outlet of the curved section and further bends in the first direction to form a third curved portion. The liquid outlet of the spraying section is positioned toward the isolation space. Finally, through the coordinated connection of the multiple curved sections, the second curved portion is lower in height than the first and third curved portions, thereby forming a liquid flow restriction zone at the lowest point of the nozzle.

[0045] It is understandable that when the disinfectant flows back, especially when the virus density in the isolation space is high, causing the virus to partially contaminate the spray section, the virus may enter the interior of the nozzle under the influence of the disinfectant. In this case, the second bend can provide a first flow restriction for the disinfectant flowing back into the spray section; and when the amount of disinfectant flowing back or the amount of virus entering is large, the first bend can continue to provide a second flow restriction for the disinfectant.

[0046] For example, in some embodiments, when the nozzle is not spraying, the second curved portion stores disinfectant, while the first and third curved portions on either side are filled with air. Thus, only a partial liquid seal on the first curved portion is required to limit viral contamination of the nozzle interior or the disinfectant pipeline.

[0047] Preferably, the first connecting section 401, the second connecting section 501 and the spraying section 403 are all curved pipes with a first bending angle, and the bending section 402 is a curved pipe with a second bending angle, so that the nozzle and the second connecting section are combined to form an "S" shape as a whole, thereby enhancing its anti-backflow effect.

[0048] Specifically, the first bending angle is 45°, the second bending angle is 180°, the installation directions of the first connecting section 401 and the second connecting section 501 are opposite, the installation direction of the spraying section is the same as the installation direction of the second connecting section, and the opening of the bending section 402 is set upward.

[0049] In some embodiments, the nozzle may be integrally formed. In other embodiments, the first connecting section, the bending section, and the spraying section may be combined via a connector (eg, an adapter) to form the nozzle.

[0050] In some embodiments, the first connecting segment 401 is detachably connected to the second connecting segment 501. For example, the first connecting segment and the second connecting segment can be detachably connected by threaded engagement.

[0051] In some embodiments, multiple nozzles 4 are provided along the circumference of the bottom of the isolation cabin 1. Correspondingly, the disinfectant pipeline is arranged along the circumference of the bottom of the isolation cabin 1, and the disinfectant pipeline is provided with multiple water outlets that cooperate with the nozzles 4. By arranging multiple nozzles 4, the spraying efficiency of the disinfectant can be effectively increased and the coverage area of ​​the spray can be increased.

[0052] In some embodiments, the inner diameter of the nozzle 4 is smaller than the inner diameter of the disinfectant pipeline, so that the hydraulic pressure of the disinfectant in the disinfectant pipeline increases after entering the nozzle 4, further enhancing the atomization effect of the spray.

[0053] In some embodiments, the nozzle 4 and the disinfectant pipeline can be threadedly connected. Specifically, the liquid inlet end of the nozzle 4 is provided with an external thread, and the liquid outlet end of the disinfectant pipeline is provided with an internal thread matching the external thread.

[0054] In other embodiments, the nozzle 4 and the disinfectant pipeline can also be detachably connected via an intermediate connector. For example, a flange is installed between the liquid inlet end of the nozzle 4 and the liquid outlet end of the disinfectant pipeline to connect the two.

[0055] In some embodiments, in order to make the cart more beautiful and practical as a whole, a functional box 8 is provided at the first end of the isolation cabin 1, and the negative pressure disinfection mechanism, the disinfectant tank and the power supply are all arranged inside the functional box 8. The outside of the functional box 8 is provided with at least one switch for controlling the start and stop of the negative pressure disinfection mechanism and the whole vehicle disinfection mechanism. A control panel can be provided outside the functional box 8, and the operation of the cart can be controlled by the control panel, which is convenient and fast.

[0056] In some embodiments, a plurality of moving wheels 7 are (evenly) arranged at the bottom of the isolation cabin 1 .

[0057] In some embodiments, see Figure 2 , a plurality of support rods 6 are provided inside the isolation cabin, and the support rods 6 are located at the bottom of the isolation space, see Figure 5A liquid guide groove 601 is provided on the support rod, and the diameter of the liquid guide groove 601 changes from small to large and then decreases from the first end to the second end, and the height of the bottom of the liquid guide groove 601 changes from high to low and then high from the first end to the second end; that is, the width of the support rod 6 gradually increases from its two ends to the middle, and the height from its two ends to the middle gradually decreases, so that the disinfectant spray condensate in the isolation space can flow along the two ends of the liquid guide groove into the middle part of the liquid guide groove and be collected.

[0058] In some embodiments, the plurality of support rods 6 are evenly arranged along the length direction of the isolation cabin and parallel to the width direction of the isolation cabin.

[0059] In some embodiments, see Figure 6 The isolation cabin is provided with slide rails 101 on both sides. The bottom of the slide rails 101 extends to both sides to form a liquid holding cavity 102. Slide blocks 201 that cooperate with the slide rails are provided on both sides of the hatch 2. When the hatch 2 is installed on the slide rails 101, the two side walls of the slide blocks 201 respectively fit with the two side walls of the slide rails 101, and the first end of the slide block 201 extends into the liquid holding cavity 102. In other words, the width of the slide block is slightly smaller than, or the same as, the internal width of the slide rail, while the width of the liquid holding cavity is greater than the width of the slide block and the slide rail, leaving space in the liquid holding cavity for containing disinfectant.

[0060] In some embodiments, the thickness of the slider is smaller than the thickness of the cabin door, so that the combined part of the slider and the cabin door forms a boss; when the cabin door is installed on the slide rail, the boss is clamped on the top of the slide rail to limit the position of the slider (the relative height to the slide rail), so that a certain gap is left between the first end of the slider and the bottom of the liquid holding chamber, and a liquid guide channel is formed, so that the disinfectant in the liquid holding chamber can flow inside it through the liquid guide channel.

[0061] When the cart is used, the door is first opened to place the body on the support rod inside the isolation cabin, and then disinfectant is injected into the guide rail and the door is closed. At this time, the door can slide, and the disinfectant in the slide rail can be brought to various parts of the slide rail and the slider to achieve disinfection of the gap. At the same time, the remaining disinfectant in the liquid chamber can water-seal the gap between the door and the isolation cabin to ensure the airtightness of the isolation space; then the negative pressure disinfection mechanism and the whole vehicle disinfection mechanism are turned on, and while spraying disinfectant spray into the isolation space, air is exhausted through the air disinfector so that the spray can move from bottom to top to cover the entire isolation space and make the isolation space in a negative pressure state. In the subsequent transportation process, even if the spray condenses to form droplets, the support rod with a liquid guide groove can collect the droplets to prevent the condensate from dispersing everywhere or even causing secondary pollution.

[0062] It is worth noting that the biosafety disinfection solution adopted in this application makes the cart particularly suitable for transporting animal carcasses suffering from highly pathogenic infectious diseases (or carrying highly pathogenic microorganisms or viruses), such as transporting them from the wild to the anatomy laboratory to facilitate the completion of experimental dissections.

[0063] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0064] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the purpose of the present invention and the claims, which are all within the protection of the present invention.

Claims

1. A biosafety cart, characterized in that: The isolation cabin comprises an isolation cabin with a door, the isolation cabin and the door enclose a closed isolation space, the isolation cabin is integrated with a negative pressure disinfection mechanism and a whole vehicle disinfection mechanism, and a power supply that cooperates with the negative pressure disinfection mechanism and the whole vehicle disinfection mechanism; The negative pressure disinfection mechanism includes an air disinfector, and the isolation cabin is provided with an exhaust pipe connected to the exhaust end of the air disinfector, and the air inlet end of the exhaust pipe is provided at the top of the isolation cabin and communicates with the isolation space; The whole vehicle disinfection mechanism includes a disinfectant tank and at least one nozzle, and a disinfectant pipe connecting the disinfectant tank and the nozzle. A water pump is provided on the disinfectant pipe. The nozzle is detachably connected to the disinfectant pipe. The liquid outlet end of the nozzle is located in the isolation space. The nozzle is U-shaped, and the liquid outlet end of the nozzle is higher than the liquid inlet end of the nozzle.

2. A biosafety cart according to claim 1, characterized in that: The disinfectant pipeline has a second connecting section docking with the nozzle; correspondingly, the nozzle includes: a first connecting section, a bending section and a spraying section from the liquid inlet end to the liquid outlet end; wherein, the first connecting section and the second connecting section are connected in sequence to form a first bend along a first direction; the bending section extends a certain length along the liquid outlet end of the first connecting section, and continues to bend along a second direction opposite to the first direction to form a second bend; the spraying section extends outward for a certain length along the liquid outlet section of the bending section, and continues to bend along the first direction to form a third bend; wherein, the height of the second bend is lower than that of the first bend and the third bend, so that the second bend and the first bend can sequentially prevent the disinfectant from backflow.

3. A biosafety cart according to claim 1, characterized in that: A plurality of support rods are provided inside the isolation cabin, and the support rods are located at the bottom of the isolation space. A liquid guide groove is provided on the support rods. The diameter of the liquid guide groove increases from small to large and then decreases from the first end to the second end, and the height of the bottom of the liquid guide groove decreases from high to low and then increases from the first end to the second end, so that the spray condensate of the disinfectant in the isolation space can flow along the two ends of the liquid guide groove into the middle part of the liquid guide groove and be collected.

4. A biosafety cart according to claim 1, characterized in that: Slide rails are respectively provided on both sides of the isolation cabin, and the bottom of the slide rails extends to both sides to form a liquid containing cavity. Slide blocks cooperating with the slide rails are respectively provided on both sides of the cabin door. When the cabin door is installed on the slide rails, the two side walls of the slide block are respectively fitted with the two side walls of the slide rails, and the first end of the slide block extends into the liquid containing cavity.

5. A biosafety cart according to claim 4, characterized in that: The thickness of the slider is smaller than that of the hatch, so that the combined portion of the slider and the hatch forms a boss; when the hatch is installed on the slide rail, the boss is clamped on the top of the slide rail to limit the height of the slider, so that a liquid guide channel is formed between the first end of the slider and the bottom of the liquid chamber.

6. The biosafety cart according to claim 1, characterized in that: A plurality of nozzles are provided along the circumference of the bottom of the isolation cabin; and / or the inner diameter of the nozzle is smaller than the inner diameter of the disinfectant pipeline.

7. The biosafety cart according to claim 3, characterized in that: The plurality of support rods are evenly arranged along the length direction of the isolation cabin and parallel to the width direction of the isolation cabin.

8. The biosafety cart according to claim 1, characterized in that: A plurality of moving wheels are provided at the bottom of the isolation cabin.

9. The biosafety cart according to claim 1, characterized in that: A functional box is provided at the first end of the isolation cabin, and the negative pressure disinfection mechanism, the disinfectant tank and the power supply are all arranged inside the functional box. At least one switch for controlling the start and stop of the negative pressure disinfection mechanism and the whole vehicle disinfection mechanism is provided outside the functional box.

10. The biosafety cart according to claim 1, characterized in that: The nozzle and the disinfectant pipeline are threadedly connected, wherein the liquid inlet end of the nozzle is provided with an external thread, and the liquid outlet end of the disinfectant pipeline is provided with an internal thread matching the external thread.

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