Variable-pressure purification fuming cupboard

Abstract

The utility model relates to the technical field of experimental ventilation equipment, in particular to a variable-pressure purification fuming cupboard which comprises a cupboard body, a slidable ventilation assembly is arranged on the upper side of the cupboard body, locking devices are symmetrically arranged on the left side and the right side of the front end of the ventilation assembly, and the ventilation assembly can be freely locked at different heights of the cupboard body through the locking devices. Therefore, gas escaping during different working experiments can be exhausted. When the cabinet is used, the ventilation seat freely slides up and down in the cabinet cavity through the sliding rail, so that the ventilation seat is not located on the upper side of an operation experiment, then the screw rod is rotated, the screw rod is connected in the inner bolt groove, the rotary clamping strip is driven by the annular groove to rotate, so that a locking base point is provided for locking, and then the threaded sleeve button is rotated. And the threaded sleeve button is close to the rotating clamping strip on the bolt sleeve, so that the ventilation seat capable of freely sliding is temporarily locked at a proper height, dissipated gas can be fully pumped and supplied, the applicability of equipment is improved, and the harm of harmful gas to operators is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of experimental ventilation equipment, in particular to a variable pressure purification fume hood. Background Art

[0002] Cabinet exhaust hoods are commonly known as fume hoods, which are similar to closed hoods. Small parts spray paint cabinets and chemical laboratory fume hoods are typical structures of cabinet exhaust hoods. Large room fume hoods have one side completely open, and operators work inside the cabinet. They are mainly used for large-scale painting, powder bagging, etc. The working opening of the fume hood has a great influence on the airflow distribution in the cabinet, and the airflow distribution directly affects the working effect of the cabinet exhaust hood.

[0003] The applicability of fume hoods currently on the market is poor. Since the inner cavity height of the cabinet is relatively high, when the container to be processed is small and the odor of the gas is relatively serious, the exhaust pressure of the fume hood is relatively strict. Therefore, those skilled in the art provide a variable pressure purification fume hood to solve the problems raised in the above background technology. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a variable pressure purification fume hood, comprising a cabinet, a slidable ventilation component is arranged on the upper side of the cabinet, and locking devices are symmetrically arranged on the left and right sides of the front end of the ventilation component. The locking device can be used to freely lock the ventilation component at different heights of the cabinet to adapt to the external discharge of the escaped gas during different working experiments;

[0005] The cabinet includes a cabinet body, ear seats, long holes, a cabinet cavity, slide rails, magnetic strips and sealed slide grooves. The ear seats are symmetrically installed on the left and right sides of the front end of the cabinet body, and the long holes are opened on the ear seats. The cabinet body is opened in the cabinet cavity. The slide rails are fixedly installed on the rear sides of the left and right walls of the cabinet cavity. The magnetic strips are fixedly installed on the front sides of the left and right walls of the cabinet cavity. The left and right walls of the cabinet cavity are symmetrically opened with sealed slide grooves, and the sealed slide grooves are arranged on the front sides of the magnetic strips.

[0006] Preferably, support feet are fixedly installed at the lower end of the cabinet near the four corners, a plurality of cabinet boxes are arranged at the lower end of the cabinet, and a ventilation pipe opening is fixedly installed at the middle part of the upper end of the ventilation component.

[0007] Preferably, the ventilation assembly comprises a ventilation seat, a plastic plate, a magnetic strip, a limit column and a slide rail mounting groove. The ventilation seat is symmetrically provided with slide rail mounting grooves on the left and right sides, and the slide rail mounting grooves are used for placing the slide rails.

[0008] Preferably: a rolled-up plastic plate is fixedly mounted on the front side of the ventilation seat, magnetic strips are arranged on the left and right sides of the plastic plate for press-fit connection, the magnetic strips correspond to the magnetic strips in adsorption, a limiting column is fixedly installed at the lower end of the plastic plate, the limiting column is arranged in a sealing slide groove, the limiting column slides in the sealing slide groove, and the magnetic strips are adsorbed to the magnetic strips, so that the plastic plate seals the experimental space in the cabinet cavity, thereby reducing gas escape during the experiment.

[0009] Preferably: the locking device includes a bolt sleeve, an inner bolt groove, a screw, an annular groove, a rotating clamping strip and a threaded sleeve button, the bolt sleeve is provided with an inner bolt groove, the bottom of the inner bolt groove is provided with a threaded groove, the inner bolt groove is provided with a screw, and the screw is connected to the inner bolt groove.

[0010] Preferably: an annular groove is provided in the middle of the screw, and a rotating clamping strip is movably provided on the bolt sleeve in an annular shape. The rotating clamping strip is provided corresponding to the annular groove. When the screw slides freely in the inner bolt groove, the rotating clamping strip is forced to rotate and is used as a locking base point. A threaded structure is provided on the outer end surface of the bolt sleeve, so that the threaded sleeve button provided on the bolt sleeve can engage with the bolt sleeve thread.

[0011] Technical effects and advantages of the utility model:

[0012] 1. When the utility model is used, the ventilation seat is freely slid up and down in the cabinet cavity by the slide rail so that it is not on the upper side of the operation experiment. Then the screw is rotated to make the screw dock in the inner bolt groove, and the rotating clamping strip is driven by the ring groove to rotate, thereby providing a locking base point for locking. Then the threaded sleeve is rotated to make the threaded sleeve close to the rotating clamping strip on the bolt sleeve, thereby temporarily locking the freely slidable ventilation seat at a suitable height, which can fully extract the escaped gas, improve the applicability of the equipment, and reduce the harm of harmful gases to operators.

[0013] 2. When the utility model is used, the limit column slides in the sealing slide groove, and the magnetic strip is adsorbed by the magnetic strip, so that the plastic plate seals the experimental space in the cabinet cavity, thereby reducing the gas escape of the experiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure provided by this application;

[0015] Figure 2 It is a structural schematic diagram of the cabinet provided by this application;

[0016] Figure 3 is a schematic diagram of the structure of the ventilation assembly provided by the present application;

[0017] Figure 4 It is a structural schematic diagram of the locking device provided by the present application;

[0018] In the figure: 1. Cabinet; 2. Cabinet box; 3. Support legs; 4. Ventilation assembly; 5. Ventilation pipe opening; 6. Locking device;

[0019] 11. Cabinet body; 12. Ear seat; 13. Long hole; 14. Cabinet cavity; 15. Slide rail; 16. Magnetic strip; 17. Sealed slide groove;

[0020] 41. Ventilation seat; 42. Plastic plate; 43. Magnetic strip; 44. Limiting column; 45. Slide rail installation slot;

[0021] 61. Bolt sleeve; 62. Inner bolt groove; 63. Screw rod; 64. Ring groove; 65. Rotating clamp strip; 66. Threaded sleeve button. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific purposes.

[0023] See also Figures 1 to 4 In this embodiment, a variable pressure purification fume hood is provided, including a cabinet 1, wherein support legs 3 are fixedly installed at the lower end of the cabinet 1 near the four corners, a plurality of cabinet boxes 2 are arranged at the lower end of the cabinet 1, a slidable ventilation component 4 is arranged on the upper side of the cabinet 1, a ventilation pipe port 5 is fixedly installed at the middle of the upper end of the ventilation component 4, and locking devices 6 are symmetrically arranged on the left and right sides of the front end of the ventilation component 4. The locking device 6 can be used to freely lock the ventilation component 4 at different heights of the cabinet 1 to adapt to the external discharge of the escaped gas during different working experiments;

[0024] The cabinet 1 includes a cabinet body 11, an ear seat 12, a long hole 13, a cabinet cavity 14, a slide rail 15, a magnetic strip 16 and a sealing slide groove 17. The ear seats 12 are symmetrically installed on the left and right sides of the front end of the cabinet body 11. The ear seats 12 are provided with a long hole 13. The cabinet body 11 is provided with a cabinet cavity 14. The slide rails 15 are fixedly installed on the rear sides of the left and right walls of the inner cavity of the cabinet cavity 14. The magnetic strip 16 is fixedly installed on the front sides of the left and right walls of the inner cavity of the cabinet cavity 14. The sealing slide grooves 17 are symmetrically opened on the left and right walls of the inner cavity of the cabinet cavity 14. The sealing slide grooves 17 are arranged on the front side of the magnetic strip 16.

[0025] The ventilation assembly 4 includes a ventilation seat 41, a plastic plate 42, a magnetic strip 43, a limiting column 44 and a slide rail mounting groove 45. The left and right sides of the ventilation seat 41 are symmetrically provided with slide rail mounting grooves 45. The slide rail mounting grooves 45 are used to place the slide rails 15, so that the ventilation seat 41 can be freely lifted and lowered in the cabinet cavity 14 by using the slide rails 15. A rolled plastic plate 42 is fixedly arranged on the front side of the ventilation seat 41. Magnetic strips 43 are arranged on the left and right sides of the plastic plate 42 for pressing and connection. The magnetic strips 43 correspond to the magnetic strips 16 for adsorption. A limiting column 44 is fixedly installed at the lower end of the plastic plate 42. The limiting column 44 is arranged in the sealing slide groove 17. The limiting column 44 slides in the sealing slide groove 17 through the limiting column 44, and the magnetic strips 43 are adsorbed by the magnetic strips 16, so that the plastic plate 42 closes the experimental space in the cabinet cavity 14 to reduce the gas escape of the experiment.

[0026] The locking device 6 includes a bolt sleeve 61, an inner bolt groove 62, a screw rod 63, an annular groove 64, a rotating clamping strip 65 and a threaded sleeve button 66. The bolt sleeve 61 is provided with an inner bolt groove 62, and a threaded groove is provided at the bottom of the inner bolt groove 62. A screw rod 63 is provided in the inner bolt groove 62, and the screw rod 63 is connected to the inner bolt groove 62. An annular groove 64 is provided in the middle of the screw rod 63. A rotating clamping strip 65 is movably provided in an annular shape on the bolt sleeve 61. The rotating clamping strip 65 is provided corresponding to the annular groove 64. When the screw rod 63 slides freely in the inner bolt groove 62, the rotating clamping strip 65 is forced to rotate to serve as a locking base point. A threaded structure is provided on the outer end surface of the bolt sleeve 61, so that the threaded sleeve button 66 provided on the bolt sleeve 61 can be threadedly engaged with the bolt sleeve 61.

[0027] The working principle of the utility model is:

[0028] When the utility model is used, the ventilation seat 41 is freely slid up and down in the cabinet cavity 14 through the slide rail 15, so that it is not on the upper side of the operation experiment, and the escaped gas can be fully exhausted. Then, the screw rod 63 is rotated to make the screw rod 63 docked in the inner bolt groove 62, and the rotating clamping strip 65 is driven by the annular groove 64 to rotate, thereby providing a locking base point for locking, and then the threaded sleeve button 66 is rotated again to make the threaded sleeve button 66 close to the rotating clamping strip 65 on the bolt sleeve 61, so that the freely slidable ventilation seat 41 is temporarily locked at a suitable height, which can fully exhaust the escaped gas, improve the applicability of the equipment, and reduce the harm of harmful gases to operators.

[0029] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. Structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the field unless otherwise specified and limited.

Claims

1. A variable pressure purification fume hood, comprising a cabinet (1), characterized in that: A slidable ventilation assembly (4) is provided on the upper side of the cabinet (1), and locking devices (6) are symmetrically provided on the left and right sides of the front end of the ventilation assembly (4); The cabinet (1) comprises a cabinet body (11), an ear seat (12), a long hole (13), a cabinet cavity (14), a slide rail (15), a magnetic strip (16) and a sealing slide groove (17). The ear seats (12) are symmetrically installed on the left and right sides of the front end of the cabinet body (11). The ear seats (12) are provided with a long hole (13). The cabinet body (11) is provided with a cabinet cavity (14). The slide rails (15) are fixedly installed on the rear sides of the left and right walls of the cabinet cavity (14). The magnetic strips (16) are fixedly installed on the front sides of the left and right walls of the cabinet cavity (14). The sealing slide grooves (17) are symmetrically opened on the left and right walls of the cabinet cavity (14). The sealing slide grooves (17) are arranged on the front sides of the magnetic strips (16).

2. A variable pressure purification fume hood according to claim 1, characterized in that: Support legs (3) are fixedly installed near the four corners of the lower end of the cabinet (1), a plurality of cabinet boxes (2) are arranged in an array at the lower end of the cabinet (1), and a ventilation pipe opening (5) is fixedly installed at the middle of the upper end of the ventilation component (4).

3. A variable pressure purification fume hood according to claim 1, characterized in that: The ventilation assembly (4) comprises a ventilation seat (41), a plastic plate (42), a magnetic strip (43), a limiting column (44) and a slide rail mounting groove (45). The ventilation seat (41) is symmetrically provided with slide rail mounting grooves (45) on the left and right sides. The slide rail mounting grooves (45) are used to place the slide rails (15).

4. A variable pressure purification fume hood according to claim 3, characterized in that: A rolled-up plastic plate (42) is fixedly mounted on the front side of the ventilation seat (41), and magnetic strips (43) are arranged on the left and right sides of the plastic plate (42) for press-fit connection. The magnetic strips (43) are adsorbed and correspond to the magnetic strips (16), and a limiting column (44) is fixedly installed on the lower end of the plastic plate (42), and the limiting column (44) is arranged in the sealing slide groove (17).

5. A variable pressure purification fume hood according to claim 1, characterized in that: The locking device (6) comprises a bolt sleeve (61), an inner bolt groove (62), a screw rod (63), an annular groove (64), a rotating clamping strip (65) and a threaded sleeve button (66); the bolt sleeve (61) is provided with an inner bolt groove (62); a threaded groove is provided at the bottom of the inner bolt groove (62); a screw rod (63) is provided in the inner bolt groove (62); and the screw rod (63) is connected to the inner bolt groove (62).

6. A variable pressure purification fume hood according to claim 5, characterized in that: The screw rod (63) has an annular groove (64) in the middle, and the bolt sleeve (61) is provided with a rotating clip (65) in an annular shape and movable manner. The rotating clip (65) is provided corresponding to the annular groove (64). The outer end surface of the bolt sleeve (61) has a threaded structure, so that a threaded sleeve button (66) provided on the bolt sleeve (61) can be threadedly engaged with the bolt sleeve (61).

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