A vacuum glove box structure for easy replacement of gloves

Abstract

The present invention discloses a vacuum glove box structure for easily replacing gloves, relating to the technical field of vacuum glove boxes, comprising a vacuum box and a transparent window, wherein a panel of the transparent window is installed with a vacuum baffle assembly, and two sets of glove openings of the vacuum baffle assembly are both installed with a fixing seat assembly, and a glove assembly is installed inside the support of each set of the fixing seat assembly. During routine replacement of gloves, this design seals the glove openings based on the braking closure of the opening and closing valve plate by the opening and closing brake mechanism in the vacuum baffle assembly, isolating the vacuum box from the external environment, and then discharges the vacuum gas inside the glove assembly by utilizing the pressure relief of the pressure relief mechanism in the fixing seat assembly, thereby releasing the negative pressure adsorption state of the glove assembly and the fixing seat assembly while preventing gas leakage inside the gloves. At this time, the glove assembly can be unscrewed to achieve non-destructive replacement of gloves in the vacuum glove box, and routine glove replacement can be performed without exhausting the vacuum.

Description

Technical Field

[0001] The present invention relates to the field of vacuum glove boxes, and in particular to a vacuum glove box structure for easy replacement of gloves. Background Art

[0002] Vacuum glove boxes utilize a closed circulation system to ensure a stable experimental environment 24 hours a day, making them suitable for a variety of experimental requirements. They are widely used in sectors such as biochemistry, metallurgy, electronics, chemical engineering, geology, mining, and medicine. Due to the unique nature of vacuum glove boxes, gloves often need to be replaced after use. Therefore, replacing gloves is a common challenge in daily vacuum glove box use. Prior art solutions have been proposed to facilitate glove replacement in vacuum glove boxes. For example, a vacuum glove box disclosed on the China Patent Network (Public Announcement No. CN115890750A) utilizes a clamping mechanism to securely hold gloves in place, preventing air and radiation from leaking outside the glove box through the connecting grooves and potentially harming the experimenter. Another example is a quick-change vacuum glove box disclosed on the China Patent Network (Public Announcement No. CN116352766A). This type of box utilizes a support structure and a transmission structure, combined with an adsorption structure and a limiting structure, to enable quick removal and replacement of old and new gloves.

[0003] However, the aforementioned patents and existing vacuum glove boxes still have some shortcomings. Existing vacuum glove boxes often require evacuating the negative pressure inside the box before gloves can be replaced. This is a cumbersome operation and requires repeated vacuuming after replacement, resulting in high daily operating costs. Therefore, those skilled in the art have provided a vacuum glove box structure that facilitates glove replacement to address the issues raised in the aforementioned background art. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the present invention provides a vacuum glove box structure with easy gloves replacement, which solves the problems raised in the above background technology that the daily gloves replacement in the existing vacuum glove box is cumbersome and the replacement cost is high.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a vacuum glove box structure for easy glove replacement, comprising a vacuum box and a transparent window;

[0006] The panel of the transparent window is installed with a vacuum diaphragm assembly, and the two groups of glove openings of the vacuum diaphragm assembly are installed with a fixing seat assembly, and the support of each group of the fixing seat assembly is installed inside a glove assembly;

[0007] The vacuum diaphragm assembly includes a sealing frame and two sets of glove openings symmetrically extending through the two sides of the vacuum box bracket. The sealing frame is internally provided with opening and closing valve plates arranged circumferentially along the opening direction of the two sets of glove openings, with each set of opening and closing valve plates comprising four sets. An opening and closing brake mechanism is internally provided within the sealing frame bracket for driving the opening and closing of the opening and closing valve plates.

[0008] The fixing seat assembly includes a mounting seat mounted on the sealing frame along the direction of the glove opening, a stop pad is provided inside the support of the mounting seat, and a negative pressure chamber is spaced between the mounting seat and the stop pad;

[0009] The glove assembly comprises a glove body, and a negative pressure suction cup opposite to a stop pad is installed on the glove opening of the glove body.

[0010] As a further technical solution of the present invention: the opening and closing brake mechanism includes a brake disc arranged inside the sealing frame bracket along the circumference of the opening and closing valve plate, and the inside of the circular disc of the brake disc is circumferentially provided with four groups of transmission gears opposite to the opening and closing valve plate, the inner ring of the brake disc is provided with a transmission rack meshed one by one with the transmission gears, and the top plate of each group of the opening and closing valve plates is respectively provided with an opening and closing rack meshed with the transmission gear.

[0011] As a further technical solution of the present invention: a brake motor is installed in the middle of the back plate of the sealing frame, and the output end of the brake motor is provided with a brake gear facing between the two sets of brake discs, and the outer rings of the two sets of brake discs are provided with brake racks meshing with the brake gears.

[0012] As a further technical solution of the present invention: a guide groove is provided on the top of the plate surface of each group of the opening and closing valve plates, and a guide slide buckle is circumferentially provided inside the bracket of the sealing frame to guide the guide groove.

[0013] As a further technical solution of the present invention: a pressure relief mechanism is installed between the two opposite groups of mounting seats;

[0014] The pressure relief mechanism includes a pressure relief pipe installed along the direction of the negative pressure chamber, and two opposite groups of pressure relief pipes are connected to the conducting main pipe. A pressure valve is installed in the middle of the pipeline of the conducting main pipe, and a pressure relief valve is installed at the other end of the conducting main pipe.

[0015] As a further technical solution of the present invention: the plate surface of the stop pad is circumferentially arranged with negative pressure holes that are in communication with the negative pressure cavity.

[0016] As a further technical solution of the present invention: the negative pressure suction cup and the stop pad are the same size, and the negative pressure suction cup and the stop pad are pressed against each other.

[0017] As a further technical solution of the present invention: the support port of the mounting seat is provided with an internal threaded sleeve, and an external threaded sleeve is provided between the glove body and the negative pressure suction cup, which is screwed opposite to the internal threaded sleeve.

[0018] The present invention provides a vacuum glove box structure that is easy to replace gloves, which has the following advantages compared with the prior art:

[0019] 1. During routine gloves replacement in the vacuum glove box of this design, after the gloves are pulled out of the vacuum box, the opening and closing valve plate is closed by the opening and closing brake mechanism in the vacuum diaphragm assembly, sealing the glove opening and isolating the vacuum box from the external environment. The vacuum gas inside the glove assembly is then exhausted by the pressure relief mechanism in the fixing seat assembly, releasing the negative pressure adsorption state between the glove assembly and the fixing seat assembly while preventing gas leakage inside the gloves that could harm personnel health. At this point, the glove assembly is unscrewed, allowing for non-destructive gloves replacement in the vacuum glove box. Routine gloves replacement can be performed without exhausting the vacuum chamber.

[0020] 2. When replacing gloves in the vacuum glove box of this design, after the gloves are re-tightened, the gloves are vacuumed through the pressure relief mechanism to prevent the air inside the gloves from contaminating the interior of the vacuum box. At the same time, the glove assembly is fixed by vacuum negative pressure adsorption. The screwing and negative pressure adsorption effects of the gloves themselves are utilized to achieve a double assembly and seal of the gloves. Then, the vacuum partition assembly is opened, its opening is opened, and the gloves are inserted into the vacuum box to complete the replacement. The replacement is convenient, the sealing is good, and the replacement cost is lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of a vacuum glove box structure that is easy to replace gloves;

[0022] Figure 2 A schematic diagram of replacing a glove assembly in a vacuum glove box structure that allows easy replacement of gloves;

[0023] Figure 3 This is a schematic diagram of the structure of a glove assembly in a vacuum glove box structure that is easy to replace gloves;

[0024] Figure 4 This is a schematic structural diagram of a fixing seat assembly in a vacuum glove box structure that allows easy replacement of gloves;

[0025] Figure 5 This is a schematic structural diagram of a vacuum baffle assembly in a vacuum glove box structure that allows easy glove replacement;

[0026] Figure 6 A schematic diagram of the closed structure of a vacuum partition assembly in a vacuum glove box structure for easy glove replacement;

[0027] Figure 7 A schematic diagram of the opening and closing of a vacuum partition assembly in a vacuum glove box structure for easy glove replacement.

[0028] In the figure: 1. Vacuum box; 2. Transparent window; 3. Vacuum diaphragm assembly; 31. Sealing frame; 32. Brake motor; 33. Glove opening; 34. Brake disc; 35. Brake rack; 36. Brake gear; 37. Transmission rack; 38. Transmission gear; 39. Opening and closing rack; 310. Opening and closing valve plate; 311. Guide slide; 312. Guide slide; 4. Fixed seat assembly; 41. Mounting seat; 42. Internal threaded sleeve; 43. Stop pad; 44. Negative pressure discharge hole; 45. Negative pressure chamber; 46. Pressure relief pipe; 47. Pressure valve; 48. Main conduction pipe; 49. Pressure relief valve; 5. Glove assembly; 51. Glove body; 52. External threaded sleeve; 53. Negative pressure suction cup. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0030] See also Figure 1-7 The present invention provides a technical solution for a vacuum glove box structure that is easy to change gloves: a vacuum glove box structure that is easy to change gloves, comprising a vacuum box 1 and a transparent window 2, a panel of the transparent window 2 being mounted with a vacuum diaphragm assembly 3, the vacuum diaphragm assembly 3 comprising a sealing frame 31 and two sets of glove openings 33 symmetrically extending through the two sides of the bracket of the vacuum box 1, the interior of the sealing frame 31 being provided with opening and closing valve plates 310 arranged circumferentially along the opening direction of the two sets of glove openings 33, and each set of opening and closing valve plates 310 being four in number, the interior of the sealing frame 31 being provided with an opening and closing brake for driving the opening and closing valve plates 310 to open and close Mechanism, the opening and closing brake mechanism includes a brake disc 34 arranged inside the sealing frame 31 bracket along the circumference of the opening and closing valve plate 310, a brake motor 32 is installed in the middle of the back plate of the sealing frame 31, and the output end of the brake motor 32 is provided with a brake gear 36 facing the two groups of brake discs 34, and the outer rings of the two groups of brake discs 34 are provided with a brake rack 35 meshing with the brake gear 36. By controlling the operation of the brake motor 32, the brake gear 36 is driven to rotate, and the meshing transmission of the brake gear 36 and the brake rack 35 is utilized to push the relative brake disc 34 to rotate, which serves as a driving source to drive the opening and closing valve plate 310 to open and close.

[0031] The inside of the disc of the brake disc 34 is circumferentially provided with four groups of transmission gears 38 opposite to the opening and closing valve plate 310, and the inner ring of the brake disc 34 is provided with a transmission rack 37 that meshes with the transmission gear 38 one by one. The top plate of each group of opening and closing valve plates 310 is respectively provided with an opening and closing rack 39 that meshes with the transmission gear 38. A guide groove 311 is provided on the top of the plate surface of each group of opening and closing valve plates 310. The inside of the bracket of the sealing frame 31 is circumferentially provided with a guide slider 312 that guides the guide groove 311. When the brake disc 34 rotates, it drives the transmission rack 37 of its inner ring to rotate, and utilizes the one-to-one meshing transmission of the transmission rack 37 and the transmission gear 38, and under the meshing transmission of the transmission gear 38 and the opening and closing rack 39, the rotational force is converted into horizontal thrust, pushing the opening and closing valve plates 310 to slide horizontally in sequence, opening and closing the glove opening 33.

[0032] The two groups of glove openings of the vacuum diaphragm assembly 3 are both installed with a fixing seat assembly 4, and a glove assembly 5 is installed inside the support of each group of fixing seat assemblies 4. The fixing seat assembly 4 includes a mounting seat 41 installed on the sealing frame 31 along the direction of the glove opening 33. The glove assembly 5 includes a glove body 51, and the support port of the mounting seat 41 is provided with an internal threaded sleeve 42. An external threaded sleeve 52 is provided between the glove body 51 and the negative pressure suction cup 53, which is screwed opposite to the internal threaded sleeve 42. By utilizing the threaded combination of the internal threaded sleeve 42 and the external threaded sleeve 52, the staff only needs to screw the glove assembly 5 onto the fixing seat assembly 4 by a simple knob method, and utilize the negative pressure seal between the negative pressure suction cup 53 and the stop pad 43 to form a good sealing connection state.

[0033] A stop pad 43 is provided inside the support of the mounting seat 41, and a negative pressure chamber 45 is spaced between the mounting seat 41 and the stop pad 43. A negative pressure suction cup 53 opposite to the stop pad 43 is installed on the glove opening of the glove body 51. A pressure relief mechanism is installed between the two opposite sets of mounting seats 41. The pressure relief mechanism includes a pressure relief pipe 46 installed along the chamber direction of the negative pressure chamber 45, and the two opposite sets of pressure relief pipes 46 are connected to the conducting main pipe 48. A pressure valve 47 is installed in the middle of the pipeline of the conducting main pipe 48, and a pressure relief valve 49 is installed at the other end of the pipe opening of the conducting main pipe 48. When the gloves are replaced and disassembled, When the vacuum diaphragm assembly 3 is sealed and closed, the valve switch of the pressure relief valve 49 can be opened, and the vacuum in the negative pressure chamber 45 can be relieved through the combination of the conducting main pipe 48 and the pressure relief pipe 46, so that the vacuum is kept at the same pressure as the outside air, and the negative pressure adsorption characteristics between the negative pressure suction cup 53 and the stop pad 43 are released, which is convenient for disassembly and assembly. When the gloves are replaced and installed later, the negative pressure chamber 45 can also be evacuated to make the negative pressure suction cup 53 and the stop pad 43 negatively attracted, thereby improving the installation stability and sealing of the gloves, and at the same time, the air inside the gloves is discharged to avoid contaminating the vacuum state in the vacuum box 1.

[0034] The surface of the stop pad 43 is circumferentially arranged with negative pressure discharge holes 44 that are connected to the negative pressure chamber 45. The negative pressure suction cup 53 is the same size as the stop pad 43, and the negative pressure suction cup 53 and the stop pad 43 are pressed against each other. The negative pressure adsorption of the negative pressure suction cup 53 and the stop pad 43 can serve as a self-connecting node between the glove assembly 5 and the fixing seat assembly 4 to improve the installation stability. On the other hand, it can self-seal the connection node between the two, thereby improving the sealing performance while reducing the intensity of human operation.

[0035] The working principle of the present invention is as follows: during daily use of the vacuum glove box, when the gloves need to be replaced, after the glove body 51 is pulled out of the vacuum box 1, the brake motor 32 is first controlled to operate, driving the brake gear 36 to rotate. The meshing transmission between the brake gear 36 and the brake rack 35 drives the relative brake disc 34 to rotate. As a driving source, the transmission rack 37 on its inner ring is driven to rotate. The transmission rack 37 is meshed with the transmission gear 38 in a one-to-one manner. Under the meshing transmission of the transmission gear 38 and the opening and closing rack 39, the rotational force is converted into horizontal thrust, which drives the opening and closing valve plate 310 to slide horizontally and symmetrically in a coordinated manner, closing the glove opening 33. Then, the vacuum box 1 is sealed and the gloves can be replaced without exhausting the vacuum.

[0036] After the vacuum diaphragm assembly 3 is sealed and closed, the valve switch of the pressure relief valve 49 is opened, and the vacuum in the negative pressure chamber 45 is relieved through the combination of the conducting main pipe 48 and the pressure relief pipe 46, so that the internal pressure is kept equal to the pressure of the outside air, and the negative pressure adsorption property between the negative pressure suction cup 53 and the stop pad 43 is released. At the same time, the internal gas is drained out to avoid the inert gas in the vacuum box remaining in the glove and damaging the health of the staff. At this time, by using the thread combination of the internal threaded sleeve 42 and the external threaded sleeve 52, the staff can complete the disassembly and assembly of the glove by simply turning the knob;

[0037] Further, when replacing new gloves in the future, after the gloves are re-installed with the knob, the vacuum equipment is used to evacuate the negative pressure chamber 45 through the combination of the pressure relief valve 49, the conducting main pipe 48 and the pressure relief pipe 46. While extracting the gas inside the gloves, the negative pressure suction cup 53 and the stop pad 43 are negatively attracted to each other, thereby improving the sealing firmness of the glove installation. Then, it is only necessary to open and close the opening and closing valve plate 310 of the vacuum diaphragm assembly 3 again to expose the glove opening 33, and put the gloves back into the vacuum box 1. It has good non-destructive replacement characteristics and does not need to be vacuumed for daily glove replacement work. The operation is simple and convenient, and the operation safety is better.

[0038] The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications should be considered within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained in this invention shall, unless otherwise specified or limited, be implemented in accordance with conventional means in the art.

Claims

1. A vacuum glove box structure for easy glove replacement, characterized in that: It comprises a vacuum box (1) and a transparent window (2); The panel of the transparent window (2) is installed with a vacuum diaphragm assembly (3), and the two groups of glove openings of the vacuum diaphragm assembly (3) are both installed with a fixing seat assembly (4), and the support of each group of the fixing seat assembly (4) is internally installed with a glove assembly (5); The vacuum diaphragm assembly (3) comprises a sealing frame (31) and two groups of glove openings (33) symmetrically extending through the two sides of a bracket of the vacuum box (1); opening and closing valve plates (310) are arranged circumferentially along the opening direction of the two groups of glove openings (33) inside the bracket of the sealing frame (31), and the number of each group of opening and closing valve plates (310) is four; and an opening and closing brake mechanism for driving the opening and closing valve plates (310) to open and close is provided inside the bracket of the sealing frame (31); The fixing seat assembly (4) comprises a mounting seat (41) mounted on the sealing frame (31) along the direction of the glove opening (33); a stop pad (43) is provided inside the support of the mounting seat (41); and a negative pressure chamber (45) is spaced between the mounting seat (41) and the stop pad (43); The glove assembly (5) comprises a glove body (51), and a negative pressure suction cup (53) is installed on the glove opening of the glove body (51) and is opposite to the stop pad (43); The opening and closing brake mechanism includes a brake disc (34) arranged inside the sealing frame (31) bracket along the circumference of the opening and closing valve plate (310), and the inside of the disc of the brake disc (34) is circumferentially provided with four groups of transmission gears (38) opposite to the opening and closing valve plate (310), the inner ring of the brake disc (34) is provided with a transmission rack (37) meshed with the transmission gears (38) one by one, and the top plate of each group of the opening and closing valve plates (310) is respectively provided with an opening and closing rack (39) meshed with the transmission gear (38); A brake motor (32) is installed in the middle of the back plate of the sealing frame (31), and the output end of the brake motor (32) is provided with a brake gear (36) facing between the two groups of brake discs (34), and the outer rings of the two groups of brake discs (34) are both provided with a brake rack (35) meshing with the brake gear (36); A guide slot (311) is provided on the top of the plate surface of each group of the opening and closing valve plates (310), and a guide buckle (312) is circumferentially provided inside the bracket of the sealing frame (31) to guide the guide slot (311).

2. The vacuum glove box structure for easy glove replacement according to claim 1, characterized in that: A pressure relief mechanism is installed between the two opposing groups of mounting seats (41); The pressure relief mechanism comprises a pressure relief pipe (46) installed along the direction of the negative pressure chamber (45), and two opposite groups of pressure relief pipes (46) are connected to a conducting main pipe (48). A pressure valve (47) is installed in the middle of the conducting main pipe (48), and a pressure relief valve (49) is installed at the other end of the conducting main pipe (48).

3. The vacuum glove box structure for easy glove replacement according to claim 1, characterized in that: The plate surface of the stop pad (43) is provided with negative pressure discharge holes (44) arranged in a circumferential manner and communicating with the negative pressure cavity (45).

4. The vacuum glove box structure for easy glove replacement according to claim 1, characterized in that: The negative pressure suction cup (53) and the stop pad (43) are of the same size, and the negative pressure suction cup (53) and the stop pad (43) are pressed against each other.

5. The vacuum glove box structure for easy glove replacement according to claim 1, characterized in that: The support port of the mounting seat (41) is provided with an internal thread sleeve (42), and an external thread sleeve (52) screwed opposite to the internal thread sleeve (42) is provided between the glove body (51) and the negative pressure suction cup (53).

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