Automatic door structure of ventilation cabinet

Abstract

The utility model discloses an automatic door structure of a fume hood, which comprises a fume hood body, a window is arranged on the fume hood body, a protective door is connected onto the window in a sliding manner, a driving component used for assisting the protective door in automatic lifting is arranged on the fume hood body, and the automatic door structure of the fume hood further comprises a strip-shaped plate fixed at the lower end of the protective door. A sealing assembly used for sealing after the protective door is closed is arranged on the strip-shaped plate. According to the automatic door structure of the ventilation cabinet, when the ventilation cabinet is used, the driving assembly in the cabinet body of the ventilation cabinet drives the protective door to ascend and descend, the ventilation cabinet can be conveniently and rapidly opened and closed, and in the process of driving the protective door to descend to close the cabinet body, the automatic door structure is convenient to operate. The bottom of the open window is blown and cleaned through air sprayed out of the air outlet spray head, the cleanliness of the bottom of the open window is kept, the situation that due to foreign matter at the bottom of the open window, sealing is not tight after the protective door is closed is avoided, and sealing operation after the ventilation cabinet is closed is further facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of fume hoods, in particular to an automatic door structure of a fume hood. Background Art

[0002] When the fume hood is in use, in order to facilitate quick adjustment and control, the protective door is automatically lifted, lowered and closed by the driving component inside the cabinet. During the lifting and closing process of the protective door, some foreign matter at the bottom of the window on the cabinet will collide with the bottom of the protective door, causing a gap between the protective door and the window, affecting the sealing effect of the protective door on the inside of the cabinet after it is closed.

[0003] Therefore, a fume hood automatic door structure is urgently needed to solve the above problems. Utility Model Content

[0004] The utility model aims to provide an automatic door structure of a fume hood to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solutions: an automatic door structure of a fume hood, comprising a fume hood cabinet, a window is provided on the fume hood cabinet, a protective door is slidably connected to the window, a driving component for assisting the automatic lifting of the protective door is provided on the fume hood cabinet, and further comprising:

[0006] A strip plate fixed to the lower end of the protective door, wherein a sealing assembly for sealing the protective door after closing is arranged on the strip plate;

[0007] A cleaning component arranged on the inner side of the protective door is used to clean the bottom surface of the double-leaf window when the protective door is closed.

[0008] The cleaning component includes a support plate fixed on the inner side of the protective door, a plurality of air pipes are arranged and fixed on the support plate, an air outlet nozzle is installed at the lower end of each air pipe, the lower end of the air outlet nozzle is arranged toward the bottom of the strip plate, and an inflation component for inflating the inside of each air pipe is arranged above the support plate.

[0009] The inflatable assembly includes a connecting pipe arranged above the support plate, one end of each of the air pipes is connected to the interior of the connecting pipe, a mounting pipe is installed on the connecting pipe, and a first one-way valve is installed inside the connecting pipe.

[0010] A second one-way valve is installed inside the mounting tube, a piston plate is slidably connected to the connecting tube, a connecting assembly for connecting the piston plate is provided on the connecting tube, and a transmission assembly for transmitting the piston plate is provided on the back of the protective door.

[0011] The conducting direction of the first one-way valve and the second one-way valve is from the outside of the installation pipe to the inside of the connecting pipe.

[0012] The connecting assembly includes a push rod slidably connected to one end of the connecting pipe, one end of the push rod is fixed to the piston plate, a spring is sleeved on the outer side of the push rod, and the two ends of the spring are respectively connected to the inner wall of the connecting pipe and the piston plate.

[0013] The transmission assembly includes a mounting shaft rotatably connected to the back of the protective door, a driving disc is fixed on the mounting shaft, and rubber protrusions are fixed around the driving disc for pushing against the inner wall of the window and one end of the mounting shaft.

[0014] The sealing assembly comprises a mounting groove which is arranged at the lower end of the strip plate, and a sealing gasket for sealing is installed inside the mounting groove.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model discloses an automatic door structure for a fume hood. When the fume hood is in use, a driving assembly inside the fume hood cabinet drives the protective door to be raised and lowered, so as to facilitate the rapid opening and closing operation of the fume hood. In the process of driving the protective door to be lowered to close the cabinet body, gas sprayed from an air outlet nozzle is used to blow and clean the bottom of the window, so as to maintain the cleanliness of the bottom of the window, avoid the presence of foreign matter at the bottom of the window, which may cause the protective door to be loosely sealed after closing, and further facilitate the sealing operation after the fume hood is closed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall appearance structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the sealing assembly structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the cleaning component, the inflation component, the connection component and the transmission component of the utility model;

[0020] Figure 4 for Figure 2 Schematic diagram of the enlarged structure at point A in the middle.

[0021] In the figure: 101, fume hood cabinet; 102, window; 103, protective door; 2, strip plate; 301, mounting groove; 302, sealing gasket; 401, support plate; 402, air pipe; 403, air outlet nozzle; 501, connecting pipe; 502, mounting pipe; 503, first one-way valve; 504, second one-way valve; 505, piston plate; 601, push rod; 602, spring; 701, mounting shaft; 702, drive disk; 703, rubber protrusion. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-4 The utility model provides an automatic door structure of a fume hood, comprising a fume hood cabinet 101, a window 102 is provided on the fume hood cabinet 101, a protective door 103 is slidably connected to the window 102, and a driving component for assisting the automatic lifting of the protective door 103 is provided on the fume hood cabinet 101;

[0024] It should be noted here that the drive assembly is a prior art in this solution and will not be elaborated on here;

[0025] It also includes a strip plate 2 fixed to the lower end of the protective door 103, and a sealing component is provided on the strip plate 2 for sealing the protective door 103 after closing;

[0026] A cleaning component disposed on the inner side of the protective door 103 for cleaning the bottom surface of the split window 102 when the protective door 103 is closed;

[0027] It should be noted here that when the fume hood is in use, the protective door 103 is driven to rise and fall through the driving assembly inside the fume hood cabinet 101, so as to facilitate the rapid opening and closing of the fume hood. In the process of driving the protective door 103 to descend to close the cabinet, the gas sprayed from the air outlet nozzle 403 is used to blow and clean the bottom of the window 102, so as to maintain the cleanliness of the bottom of the window 102 and avoid the presence of foreign matter at the bottom of the window 102 causing the protective door 103 to be loosely sealed after closing, thereby further facilitating the sealing operation after the fume hood is closed.

[0028] The cleaning component includes a support plate 401 fixed to the inner side of the protective door 103, a plurality of air pipes 402 are arranged and fixed on the support plate 401, a gas outlet nozzle 403 is installed at the lower end of each gas pipe 402, and the lower end of the gas outlet nozzle 403 is arranged toward the bottom of the strip plate 2, and an inflation component for inflating the inside of each gas pipe 402 is arranged above the support plate 401;

[0029] It should be noted here that: through the inflation assembly, the external gas is sucked into the interior of the connecting pipe 501 through the second one-way valve 504 on the mounting pipe 502, and through extrusion, the sucked gas passes through the first one-way valve 503 and is ejected outward from the air outlet nozzle 403 at one end of each air pipe 402. As the protective door 103 descends, the gas ejected from the air outlet nozzle 403 is used to blow and clean the bottom of the window 102.

[0030] The inflatable component includes a connecting pipe 501 arranged above the support plate 401, one end of each air pipe 402 is connected to the inside of the connecting pipe 501, a mounting pipe 502 is installed on the connecting pipe 501, a first one-way valve 503 is installed inside the connecting pipe 501, a second one-way valve 504 is installed inside the mounting pipe 502, a piston plate 505 is slidably connected to the connecting pipe 501, a connecting component for connecting the piston plate 505 is arranged on the connecting pipe 501, and a transmission component for transmitting the piston plate 505 is arranged on the back of the protective door 103;

[0031] It should be noted here that: through the transmission assembly, the push rod 601 and the piston plate 505 are made to reciprocate inside the connecting pipe 501 as the protective door 103 descends. Since the conduction direction of the first one-way valve 503 and the second one-way valve 504 is from the outside of the mounting pipe 502 to the inside of the connecting pipe 501, through the reciprocating motion of the piston plate 505, the external gas is sucked into the inside of the connecting pipe 501 through the second one-way valve 504 on the mounting pipe 502.

[0032] The conducting direction of the first one-way valve 503 and the second one-way valve 504 is from the outside of the installation pipe 502 to the inside of the connecting pipe 501;

[0033] What needs to be explained here is that it is convenient to guide and control the intake air.

[0034] The connecting assembly includes a push rod 601 slidably connected to one end of the connecting tube 501, one end of the push rod 601 is fixed to the piston plate 505, a spring 602 is sleeved on the outer side of the push rod 601, and the two ends of the spring 602 are respectively connected to the inner wall of the connecting tube 501 and the piston plate 505;

[0035] It should be noted here that: the push rod 601 facilitates the connection and transmission of the piston plate 505, and the spring 602 facilitates the reset movement of the piston plate 505 after movement.

[0036] The transmission assembly includes a mounting shaft 701 rotatably connected to the back of the protective door 103, a driving disc 702 is fixed on the mounting shaft 701, and rubber protrusions 703 are fixed around the driving disc 702 for pushing against the inner wall of the window 102 and one end of the mounting shaft 701;

[0037] It should be noted here that: in the process of driving the protective door 103 to descend and close the cabinet, the rubber protrusions 703 on the driving disk 702 are against the inner wall of the window 102. As the protective door 103 descends, the driving disk 702 and the mounting shaft 701 are driven to rotate through the abutment between the rubber protrusions 703 and the inner wall of the window 102. In the process of the driving disk 702 rotating, each rubber protrusion 703 is pressed against the push rod 601 in turn.

[0038] The sealing assembly includes a mounting groove 301 formed at the lower end of the strip plate 2, and a sealing gasket 302 for sealing is installed inside the mounting groove 301;

[0039] It should be noted here that: when the protective door 103 descends, the sealing gasket 302 inside the installation groove 301 is abutted against the bottom of the window 102, thereby improving the sealing effect after the protective door 103 is closed.

[0040] Working principle: When the fume hood is in use, the protection door 103 is driven to rise and fall through the driving assembly inside the fume hood cabinet 101, so as to facilitate the rapid opening and closing operation of the fume hood;

[0041] In the process of driving the protective door 103 to descend and close the cabinet, the rubber protrusions 703 on the driving disk 702 abut against the inner wall of the window 102. As the protective door 103 descends, the driving disk 702 and the mounting shaft 701 are driven to rotate through the abutment between the rubber protrusions 703 and the inner wall of the window 102. In the process of the driving disk 702 rotating, the push rod 601 and the piston plate 505 are reciprocated inside the connecting pipe 501 as the protective door 103 descends, through the abutment between the rubber protrusions 703 and the push rod 601 in turn and the reset action between the spring 602 and the push rod 601 after the movement. 4 is conducted in the direction from the outside of the mounting tube 502 to the inside of the connecting tube 501. Through the reciprocating motion of the piston plate 505, the external gas is sucked into the inside of the connecting tube 501 through the second one-way valve 504 on the mounting tube 502, and through extrusion, the sucked gas passes through the first one-way valve 503 and is ejected outward from the gas outlet nozzle 403 at one end of each gas pipe 402. As the protective door 103 descends, the gas ejected from the gas outlet nozzle 403 is blown to clean the bottom of the window 102, so as to maintain the cleanliness of the bottom of the window 102, avoid the presence of foreign matter at the bottom of the window 102 causing the protective door 103 to be loosely sealed after closing, and further facilitate the sealing operation after the fume hood is closed.

[0042] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A fume hood automatic door structure, comprising: A fume hood body (101), wherein a window (102) is provided on the fume hood body (101), a protective door (103) is slidably connected to the window (102), and a driving component for assisting the automatic lifting of the protective door (103) is provided on the fume hood body (101); It is characterized by further comprising: A strip plate (2) fixed to the lower end of the protective door (103), wherein a sealing component for sealing the protective door (103) after closing is arranged on the strip plate (2); A cleaning component is arranged on the inner side of the protective door (103) and is used for cleaning the bottom surface of the split window (102) during the closing process of the protective door (103).

2. The automatic door structure of a fume hood according to claim 1, characterized in that: The cleaning component comprises a support plate (401) fixed on the inner side of the protective door (103), a plurality of air pipes (402) are arranged and fixed on the support plate (401), an air outlet nozzle (403) is installed at the lower end of each of the air pipes (402), the lower end of the air outlet nozzle (403) is arranged toward the bottom of the strip plate (2), and an inflation component for inflating the interior of each air pipe (402) is arranged above the support plate (401).

3. The automatic door structure of a fume hood according to claim 2, characterized in that: The inflation component comprises a connecting pipe (501) arranged above the support plate (401), one end of each of the air pipes (402) is arranged in communication with the interior of the connecting pipe (501), a mounting pipe (502) is installed in communication with the connecting pipe (501), a first one-way valve (503) is installed in the interior of the connecting pipe (501), a second one-way valve (504) is installed in the interior of the mounting pipe (502), a piston plate (505) is slidably connected to the connecting pipe (501), a connecting component for connecting the piston plate (505) is arranged on the connecting pipe (501), and a transmission component for transmitting the piston plate (505) is arranged on the back of the protective door (103).

4. The automatic door structure of a fume hood according to claim 3, characterized in that: The conducting direction of the first one-way valve (503) and the second one-way valve (504) is from the outside of the installation pipe (502) to the inside of the connecting pipe (501).

5. The automatic door structure of a fume hood according to claim 3, characterized in that: The connecting assembly comprises a push rod (601) slidably connected to one end of a connecting tube (501), one end of the push rod (601) being fixed to a piston plate (505), a spring (602) being sleeved on the outer side of the push rod (601), and two ends of the spring (602) being respectively connected to the inner wall of the connecting tube (501) and the piston plate (505).

6. The automatic door structure of a fume hood according to claim 5, characterized in that: The transmission assembly comprises a mounting shaft (701) rotatably connected to the back of the protective door (103), a driving disc (702) being fixed on the mounting shaft (701), and rubber protrusions (703) for pushing against the inner wall of the window (102) and one end of the mounting shaft (701) being fixed around the driving disc (702).

7. The automatic door structure of a fume hood according to claim 1, characterized in that: The sealing assembly comprises a mounting groove (301) opened at the lower end of the strip plate (2), and a sealing gasket (302) for sealing is installed inside the mounting groove (301).

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