Operation cabinet for biological experiment

Abstract

The utility model relates to an operation cabinet for biological experiments, and relates to the field of biological experiment consumables, the operation cabinet comprises a cabinet body, an illuminating lamp and a negative pressure fan are mounted on the cabinet body, a cabinet door is slidably connected to the cabinet body, an operation opening is formed in the cabinet body, the cabinet door covers the operation opening, a push-pull rod is fixedly mounted on the cabinet door, and the control panel is fixedly mounted on the cabinet body; the sensing module is fixedly mounted on the cabinet body, and the signal input end of the sensing module is in signal connection with the signal output end of the control panel; the position detection module is fixedly installed on the table top of the operation table, and the signal input end of the position detection module is in signal connection with the signal output ends of the induction module and the control panel; the locking mechanism is fixedly mounted on the cabinet body, and the signal input end of the locking mechanism is in signal connection with the signal output ends of the control panel and the position detection module; and the signal input ends of the negative pressure fan and the illuminating lamp on the cabinet body are in signal connection with the signal output end of the position detection module. The use convenience of the operation cabinet can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of biological experiment consumables, in particular to a biological experiment operation cabinet. BACKGROUND

[0002] In the fields of microbiology, biomedical, genetic engineering, biological products, etc., scientific research, teaching, clinical examination and production often need to complete biological experiments in the operation cabinet.

[0003] In the prior art, the common biological experiment operation cabinet mainly comprises a cabinet body, an operation table is installed in the cabinet body, an exhaust duct is installed on the cabinet body, the exhaust duct is in communication with a negative pressure fan installed on the cabinet body, the air outlet end of the negative pressure fan is in communication with an indoor waste gas discharge system, a lighting lamp is installed on the cabinet body, and the lighting lamp is arranged above the operation table.

[0004] However, before using the existing operation cabinet, the operator needs to pre-open the fan and the lighting lamp, and after use, the operator needs to close the fan and the lighting lamp one by one, and then close and lock the cabinet door of the operation cabinet, which is inconvenient to use. CONTENT OF THE INVENTION

[0005] In order to improve the convenience of the operation cabinet, the present application provides a biological experiment operation cabinet.

[0006] The biological experiment operation cabinet provided by the present application adopts the following technical scheme:

[0007] A biological experiment operation cabinet comprises a cabinet body, a lighting lamp and a negative pressure fan are installed on the cabinet body, a cabinet door is slidably connected to the cabinet body, an operation opening is formed in the cabinet body, the cabinet door covers the operation opening, a push-pull rod is fixedly installed on the cabinet door, and the cabinet body is provided with:

[0008] A control panel is fixedly installed on the cabinet body;

[0009] An induction module is fixedly installed on the cabinet body, a signal input end is signal connected to a signal output end of the control panel, and the induction module is used for detecting the contact pressure between the tabletop of the operation table and the bottom of the cabinet door and outputting a trigger signal when the contact pressure is less than a set value;

[0010] A position detection module is fixedly installed on the tabletop of the operation table, a signal input end is signal connected to signal output ends of the induction module and the control panel, and the position detection module is used for receiving the trigger signal and outputting a control signal when the distance between the bottom end face of the cabinet door reaches a set value;

[0011] A locking mechanism is fixedly installed on the cabinet body, and a signal input end is in signal connection with a signal output end of the control panel and the position detection module, for receiving the control signal and locking the cabinet door.

[0012] The signal input end of the negative pressure fan and the lighting lamp on the cabinet body is in signal connection with the signal output end of the position detection module, and the negative pressure fan and the lighting lamp receive the control signal and start.

[0013] By adopting the above technical scheme, when the user uses the operation cabinet, the starting signal can be input through the control panel, and the cabinet door is lifted through the push-pull rod. During the lifting of the cabinet door, the contact pressure between the bottom end face of the cabinet door and the table top of the operation table measured by the sensing module decreases. When the contact pressure is less than the set value, the sensing module outputs a trigger signal, and the position detection module starts to detect the distance between the bottom end face of the cabinet door. When the cabinet door is lifted to the set height, the position detection module outputs a control signal, and the locking mechanism locks the cabinet door after receiving the control signal, so that the cabinet door is fixed at the set height, and the operation opening on the cabinet body is exposed. At the same time, the lighting lamp and the negative pressure fan start, which can automatically sense the locking of the cabinet door, automatically start the lighting lamp and the negative pressure fan when the user opens the door, improve the automation degree of the operation cabinet, and improve the convenience of the user using the operation cabinet.

[0014] Preferably, the cabinet door comprises two side plates, two limiting plates parallelly arranged are fixedly installed on the opposite side walls of the two side plates, and a sliding groove is formed between the two limiting plates.

[0015] Two sliding plates are fixedly installed on the two sides of the cabinet door, and the two sides of the two sliding plates are slidingly arranged in the two sliding grooves.

[0016] By adopting the above technical scheme, the sliding connection between the cabinet door and the cabinet body can be realized through the sliding plates on the two sides of the operation cabinet and the sliding grooves on the upper side plates of the cabinet body.

[0017] Preferably, a limiting support is fixedly installed between the two side plates, the limiting support is limitingly arranged on the side of the cabinet door away from the cabinet body, and the control panel is fixedly installed on the side of the limiting support away from the cabinet body.

[0018] By adopting the above technical scheme, the position of the cabinet door can be limited by shielding the front side of the cabinet door through the limiting support, so as to reduce the occurrence of the falling of the cabinet door.

[0019] Preferably, the sensing module comprises:

[0020] A thin film pressure sensor is fixedly installed on the tabletop of the operating table of the cabinet body, located directly below the cabinet door, and is signal connected with the signal output end of the control panel, for detecting the contact pressure between the bottom of the cabinet door and the tabletop of the operating table and outputting a sensing pressure signal;

[0021] A comparator chip is signal connected with the signal output end of the thin film pressure sensor, for receiving the sensing pressure signal and outputting the trigger signal when the sensing pressure is greater than a set pressure value.

[0022] By adopting the above technical scheme, the contact pressure between the bottom end face of the cabinet door and the tabletop of the operating table can be detected in real time through the mutual matching and use of the thin film pressure sensor and the comparator chip, and the position detection module can be automatically started when the action of the operator lifting the cabinet door is sensed.

[0023] Preferably, the position detection module comprises:

[0024] An infrared distance measuring sensor is fixedly installed on the tabletop of the operating table of the cabinet body, with the sensing end facing the bottom end face of the cabinet door, and is signal connected with the signal output end of the comparator chip, for receiving the trigger signal and detecting the distance between the bottom end face of the cabinet door and outputting a sensing distance signal;

[0025] A single-chip microcomputer is signal connected with the signal output end of the infrared distance measuring sensor, for receiving the sensing distance signal and outputting the control signal when the sensing distance reaches a set value;

[0026] The signal input end of the infrared distance measuring sensor is signal connected with the signal output end of the single-chip microcomputer, and the infrared distance measuring sensor receives the control signal and stops running.

[0027] By adopting the above technical scheme, the height of the cabinet door can be automatically detected when the cabinet door is lifted by the user through the mutual matching and use of the infrared distance measuring sensor and the single-chip microcomputer, and the locking mechanism can be automatically controlled to lock the cabinet door to expose the operating port when the cabinet door is lifted to a set height.

[0028] Preferably, the locking mechanism comprises two telescopic air cylinders, and the two telescopic air cylinders are fixedly installed on the two side plates, respectively; two connecting supports are fixedly installed on the cabinet door, and the two ends of the push-pull rod are fixedly connected with the two connecting supports, respectively; lock grooves are formed in the opposite side walls of the two connecting supports, respectively, for the cylinder shafts of the two telescopic air cylinders to extend into.

[0029] The signal input ends of the two telescopic air cylinders are connected with the signal output ends of the single-chip microcomputer and the control panel, and the two telescopic air cylinders receive the control signals and drive the air cylinder shafts to extend into the locking grooves.

[0030] By using the above technical scheme, when the user lifts the cabinet door to a set height, the single-chip microcomputer controls the two telescopic air cylinders to extend the air cylinder shafts, so that the air cylinder shafts of the telescopic air cylinders extend into the locking grooves on the side walls of the connecting supports to lock the cabinet door; when the user finishes using the operation cabinet, the user can input a closing signal through the control panel, and the two telescopic air cylinders retract the air cylinder shafts after receiving the closing signal, and the user can lower the cabinet door through the push-pull rod, so that the cabinet door is re-covered on the operation opening to store the equipment and reagents in the operation cabinet.

[0031] In summary, the operation cabinet for biological experiments has at least one of the following beneficial technical effects:

[0032] 1. When the user uses the operation cabinet, the user can input a starting signal through the control panel and lift the cabinet door through the push-pull rod. In the process of lifting the cabinet door, the contact pressure between the bottom end face of the cabinet door and the table top of the operation table measured by the sensing module decreases. When the contact pressure is less than a set value, the sensing module outputs a trigger signal, and the position detection module starts to detect the distance between the bottom end face of the cabinet door. When the cabinet door is lifted to a set height, the position detection module outputs a control signal, and the locking mechanism locks the cabinet door after receiving the control signal, so that the cabinet door is fixed at the set height, the operation opening on the cabinet body is exposed, and the lighting lamp and the negative pressure fan are started. The technical effects of automatically sensing and locking the cabinet door and automatically starting the lighting lamp and the negative pressure fan when the user opens the door improve the automation degree of the operation cabinet and improve the convenience of the user using the operation cabinet.

[0033] 2. The infrared distance sensor and the single-chip microcomputer are matched and used, so that the height of the cabinet door can be automatically detected when the user lifts the cabinet door, and the locking mechanism can be automatically controlled to lock the cabinet door to expose the operation opening when the cabinet door is lifted to a set height. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 is a schematic diagram for showing the overall structure of the operation cabinet.

[0035] Figure 2 is a schematic diagram for showing Figure 1 the enlarged schematic diagram of position A in the operation cabinet.

[0036] Figure 3 is a schematic diagram for showing the signal transmission in the operation cabinet.

[0037] Explanation of reference signs: 1, cabinet body; 11, operation opening; 12, side plate; 13, limiting plate; 14, sliding groove; 15, limiting support; 16, operation table; 2, negative pressure fan; 3, cabinet door; 31, push-pull rod; 32, sliding plate; 33, connecting support; 34, locking groove; 4, control panel; 5, thin film pressure sensor; 6, infrared distance measuring sensor; 7, telescopic air cylinder. DETAILED DESCRIPTION

[0038] The following will be described in detail in combination with the accompanying drawings. Figures 1-3 The application is further described in detail.

[0039] EMBODIMENT

[0040] The embodiment of the application discloses an operation cabinet for biological experiments. Figures 1-3 It mainly comprises a cabinet body 1, a lighting lamp and a negative pressure fan 2 are installed on the cabinet body 1, a cabinet door 3 is slidingly connected to the cabinet body 1, an operation opening 11 is formed on the cabinet body 1, the cabinet door 3 covers the operation opening 11, and a push-pull rod 31 is fixedly installed on the cabinet door 3.

[0041] And: a control panel 4 is fixedly installed on the cabinet body 1; an induction module is fixedly installed on the cabinet body 1, a signal input end is signal-connected with a signal output end of the control panel 4, is used for detecting the contact pressure between the tabletop of an operation table 16 and the bottom of the cabinet door 3 on the cabinet body 1 and outputting a trigger signal when the contact pressure is less than a set value; a position detection module is fixedly installed on the tabletop of the operation table 16, a signal input end is signal-connected with signal output ends of the induction module and the control panel 4, is used for receiving the trigger signal and outputting a control signal when the distance between the bottom end face of the cabinet door 3 reaches a set value; a locking mechanism is fixedly installed on the cabinet body 1, a signal input end is signal-connected with signal output ends of the control panel 4 and the position detection module, is used for receiving the control signal and locking the cabinet door 3; the signal input ends of the negative pressure fan 2 and the lighting lamp on the cabinet body 1 are signal-connected with the signal output end of the position detection module, and the negative pressure fan 2 and the lighting lamp receive the control signal and start.

[0042] When the user uses the operation cabinet, the starting signal can be input through the control panel 4, and the cabinet door 3 is lifted by the push-pull rod 31. In the process of lifting the cabinet door 3, the contact pressure between the bottom end face of the cabinet door 3 and the table top of the operation table 16 is reduced, and when the contact pressure is less than the set value, the sensing module outputs a trigger signal, and the position detection module starts to detect the distance between the bottom end face of the cabinet door 3. When the cabinet door 3 is lifted to a set height, the position detection module outputs a control signal, and the locking mechanism locks the cabinet door 3 after receiving the control signal, so that the cabinet door 3 is fixed at the set height, and the operation port 11 on the cabinet body 1 is exposed. At the same time, the lighting lamp and the negative pressure fan 2 are started. The technical effects of automatically sensing and locking the cabinet door 3 and automatically starting the lighting lamp and the negative pressure fan 2 when the user opens the door improve the automation degree of the operation cabinet and improve the convenience of the user using the operation cabinet.

[0043] It should be noted that in the embodiments of the present application, the lighting lamp is fixedly installed on the top inner wall of the cabinet body 1 and is arranged above the operation table 16, which will not be described here.

[0044] Referring to Figure 1 and Figure 2 , the cabinet door 3 comprises two side plates 12, two limiting plates 13 are fixedly installed on the opposite side walls of the two side plates 12 respectively, and a sliding groove 14 is formed between the two limiting plates 13; the two side plates 12 are respectively fixedly installed with two sliding plates 32, and the two sides of the two sliding plates 32 are respectively slidingly arranged in the two sliding grooves 14.

[0045] Through the sliding plates 32 on both sides of the operation cabinet and the sliding grooves 14 on the upper side plates 12 of the cabinet body 1, the technical effect of sliding connection between the cabinet door 3 and the cabinet body 1 can be achieved.

[0046] Referring to Figure 1 , a limiting support 15 is fixedly installed between the two side plates 12, the limiting support 15 is limitingly arranged on the side of the cabinet door 3 away from the cabinet body 1, and the control panel 4 is fixedly installed on the side of the limiting support 15 away from the cabinet body 1. By shielding the front side of the cabinet door 3 through the limiting support 15, the position of the cabinet door 3 can be limited to reduce the occurrence of the cabinet door 3 falling.

[0047] Referring to Figure 1 and Figure 3 , the sensing module comprises: a thin film pressure sensor 5, which is fixedly installed on the table top of the operation table 16 of the cabinet body 1 and located directly below the cabinet door 3, and the signal input end is signal connected with the signal output end of the control panel 4, for detecting the contact pressure between the bottom of the cabinet door 3 and the table top of the operation table 16 and outputting a sensing pressure signal; a comparator chip, the signal input end is signal connected with the signal output end of the thin film pressure sensor 5, for receiving the sensing pressure signal and outputting a trigger signal when the sensing pressure is greater than a set pressure value.

[0048] Through the mutual matching and use between the thin film pressure sensor 5 and the comparator chip, the contact pressure between the bottom end face of the cabinet door 3 and the table top of the operating table 16 can be detected in real time, and the position detection module is automatically started when the action of lifting the cabinet door 3 of the operating personnel is sensed.

[0049] Referring to Figure 1 With Figure 3 , the position detection module comprises: an infrared distance sensor 6 fixedly installed on the table top of the operating table 16 of the cabinet body 1, the sensing end is arranged towards the bottom end face of the cabinet door 3, the signal input end is signal connected with the signal output end of the comparator chip, for receiving the trigger signal and detecting the distance between the bottom end face of the cabinet door 3 and outputting the sensing distance signal; a single-chip microcomputer, the signal input end is signal connected with the signal output end of the infrared distance sensor 6, for receiving the sensing distance signal and outputting the control signal when the sensing distance reaches the set value; the signal input end of the infrared distance sensor 6 is signal connected with the signal output end of the single-chip microcomputer, and the infrared distance sensor 6 receives the control signal and stops running.

[0050] Through the mutual matching and use between the infrared distance sensor 6 and the single-chip microcomputer, the height of the cabinet door 3 can be automatically detected when the user lifts the cabinet door 3, and the locking mechanism is automatically controlled to lock the cabinet door 3 to expose the operating port 11 when the cabinet door 3 is lifted to the set height.

[0051] Among them, the table top of the operating table 16 of the cabinet body 1 is provided with a mounting groove, and the infrared distance sensor 6 is embedded and installed at the groove bottom of the mounting groove.

[0052] In the embodiment of the present application, the locking mechanism adopts two telescopic cylinders 7, and the two telescopic cylinders 7 are fixedly installed on the two side plates 12 respectively; two connecting supports 33 are fixedly installed on the cabinet door 3, and the two ends of the push-pull rod 31 are fixedly connected with the two connecting supports 33 respectively, and the side walls of the two connecting supports 33 are respectively provided with locking grooves 34 for the cylinder shafts of the two telescopic cylinders 7 to extend into; the signal input ends of the two telescopic cylinders 7 are signal connected with the signal output ends of the single-chip microcomputer and the control panel 4, and the two telescopic cylinders 7 receive the control signal and drive the cylinder shafts to extend into the two locking grooves 34.

[0053] When the user lifts the cabinet door 3 to the set height, the single-chip microcomputer controls the two telescopic cylinders 7 to extend the cylinder shafts, so that the cylinder shafts of the telescopic cylinders 7 extend into the locking grooves 34 on the side walls of the connecting supports 33 to lock the cabinet door 3; when the user finishes operating the cabinet, the closing signal can be input through the control panel 4, and the two telescopic cylinders 7 retract the cylinder shafts after receiving the closing signal, and the user can lower the cabinet door 3 through the push-pull rod 31, so that the cabinet door 3 is re-covered on the operating port 11 to store the equipment and reagents in the operating cabinet.

[0054] The implementation principle of the operation cabinet for biological experiments is as follows: when a user uses the operation cabinet, a starting signal can be input through the control panel 4, and the cabinet door 3 is lifted through the push-pull rod 31. In the process of lifting the cabinet door 3, the contact pressure between the bottom end face of the cabinet door 3 and the tabletop of the operation table 16 measured by the sensing module decreases. When the contact pressure is less than a set value, the sensing module outputs a trigger signal, and the position detection module starts to detect the distance between the bottom end face of the cabinet door 3. When the cabinet door 3 is lifted to a set height, the position detection module outputs a control signal, and the locking mechanism locks the cabinet door 3 after receiving the control signal, so that the cabinet door 3 is fixed at the set height, and the operation opening 11 on the cabinet body 1 is exposed. At the same time, the lighting lamp and the negative pressure fan 2 are started. The technical effect of automatically sensing and locking the cabinet door 3 and automatically starting the lighting lamp and the negative pressure fan 2 when the user opens the door improves the automation degree of the operation cabinet and improves the convenience of the user using the operation cabinet. When the user finishes using the operation cabinet, a closing signal can be input through the control panel 4, and the two telescopic air cylinders 7 retract the air cylinder shafts after receiving the closing signal. The user can pull down the cabinet door 3 through the push-pull rod 31, so that the cabinet door 3 is covered on the operation opening 11 again, and the equipment and reagents in the operation cabinet are stored.

[0055] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application. Therefore, equivalent changes made on the basis of the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A biological experiment operation cabinet, characterized in that, The utility model relates to a cabinet, including cabinet (1), install lighting lamp and negative pressure fan (2) on cabinet (1), slidingly connected with cabinet door (3) on cabinet (1), open operating mouth (11) on cabinet (1), cabinet door (3) covers operating mouth (11), fixedly installed with push -and -pull rod (31) on cabinet door (3), and: Control panel (4) is fixedly installed on cabinet (1); Induction module is fixedly installed on cabinet (1), signal input end is connected with the signal output end signal of control panel (4), is used for detecting the contact pressure between the table top of operating platform (16) on cabinet (1) and the bottom of cabinet door (3) and output trigger signal when contact pressure is less than set value; Position detection module is fixedly installed on the table top of operating platform (16), signal input end is connected with the signal output end signal of induction module, control panel (4) is used for receiving trigger signal and outputting control signal when the distance between the bottom end face of cabinet door (3) reaches set value; Locking mechanism is fixedly installed on cabinet (1), signal input end is connected with the signal output end signal of control panel (4), position detection module is used for receiving control signal and locking cabinet door (3); Signal input end of negative pressure fan (2) and lighting lamp on cabinet (1) is connected with the signal output end signal of position detection module, and negative pressure fan (2) and lighting lamp receive control signal and start.

2. The biological experiment operating cabinet according to claim 1, characterized in that, Cabinet door (3) includes two side plates (12), two parallelly arranged limiting plates (13) are fixedly installed on the opposite side walls of two side plates (12) respectively, and a sliding groove (14) is formed between two limiting plates (13); Two slide plates (32) are fixedly installed on the two sides of cabinet door (3), and two sides of two slide plates (32) are slidingly arranged in two sliding grooves (14) respectively.

3. The biological experiment operating cabinet according to claim 2, characterized in that, Limiting support (15) is fixedly installed between two side plates (12), limiting support (15) is arranged on the side of cabinet door (3) away from cabinet (1), and control panel (4) is fixedly installed on the side of limiting support (15) away from cabinet (1).

4. The biological experiment operating cabinet according to claim 3, characterized in that, The induction module comprises: Thin film pressure sensor (5) is fixedly installed on the table top of operating platform (16) of cabinet (1), located directly below cabinet door (3), signal input end is connected with the signal output end signal of control panel (4), is used for detecting the contact pressure between the bottom of cabinet door (3) and the table top of operating platform (16) and outputting induction pressure signal; Comparator chip is connected with the signal output end signal of thin film pressure sensor (5) in signal input end, is used for receiving induction pressure signal, and output trigger signal when induction pressure is greater than set pressure value.

5. The biological experiment operating cabinet according to claim 4, characterized in that, The position detection module comprises: An infrared distance sensor (6) is fixedly installed on the tabletop of the operating table (16) of the cabinet body (1), with the sensing end facing the bottom end face of the cabinet door (3), the signal input end being signal connected with the signal output end of the comparator chip, for receiving the trigger signal and detecting the distance between the bottom end face of the cabinet door (3) and outputting the sensing distance signal; A single-chip microcomputer, with the signal input end being signal connected with the signal output end of the infrared distance sensor (6), for receiving the sensing distance signal and outputting the control signal when the sensing distance reaches the set value; The signal input end of the infrared distance sensor (6) is signal connected with the signal output end of the single-chip microcomputer, and the infrared distance sensor (6) receives the control signal and stops running.

6. The biological experiment operating cabinet according to claim 5, characterized in that, The locking mechanism comprises two telescopic cylinders (7), and the two telescopic cylinders (7) are fixedly installed on the two side plates (12) respectively; two connecting supports (33) are fixedly installed on the cabinet door (3), and the two ends of the push-pull rod (31) are fixedly connected with the two connecting supports (33) respectively; locking grooves (34) are formed in the opposite side walls of the two connecting supports (33) respectively, for the cylinder shafts of the two telescopic cylinders (7) to extend into; The signal input ends of the two telescopic cylinders (7) are signal connected with the signal output ends of the single-chip microcomputer and the control panel (4), and the two telescopic cylinders (7) receive the control signal and drive the cylinder shafts to extend into the two locking grooves (34).

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