Vacuum solvent removing device

Abstract

The utility model discloses a vacuum solvent removing device which comprises a storage cylinder and a sealing cover arranged on the storage cylinder, the sealing cover is provided with an exhaust port and an indicating window, a sealing plate is arranged in the exhaust port and is rotationally connected with the exhaust port, and the indicating window is arranged on the sealing cover. An indication assembly used for detecting the air tightness of the storage cylinder is detachably arranged on the indication window, and the indication assembly is connected with the indication window in a sealed mode. The exhaust port is arranged, the caliber of the exhaust port is small, the vacuumizing speed can be controlled, boiling of a solvent is prevented, the sealing plate is arranged in the exhaust port, the baffle is opened outwards during vacuumizing, when the vacuum placing chamber is closed, the baffle makes contact with the exhaust port inwards for sealing, internal vacuum is guaranteed, and the sealing performance is further guaranteed through cooperation with the protective cover. And by arranging the indication assembly, the sealing performance in the storage barrel can be observed, and whether the glue A goes bad or fails to use due to water absorption or not can be distinguished in time.

Description

Technical Field

[0001] The utility model relates to the technical field of solvent removal devices, and more specifically to a vacuum solvent removal device. Background Art

[0002] Silicone rubber can be cured by mixing glue A and glue B at room temperature, high temperature, UV, etc. Glue A is usually a prepolymer of polymer materials, which contains a large number of active organic groups and needs to be stored in a dark, moisture-proof, and fire-proof environment; glue B is usually a cross-linking agent containing a catalyst. Stable silicone rubber can be formed by mixing glue A and glue B in a certain proportion and curing them under corresponding conditions.

[0003] The premise of using glue A is to ensure the stability of the polymer prepolymer. When glue A is placed in the air environment, it will inevitably react with other substances in the air, or slowly oxidize in the oxygen environment, or water molecules in the air will enter the prepolymer. These will make it difficult for the silicone rubber mixed with glue A and glue B to achieve the expected performance, thus affecting the use of the silicone rubber after curing.

[0004] Due to the special functional groups in the prepolymer of A glue, heating to remove solvents is not possible; similarly, leaving the solvent to stand at room temperature will cause the slow failure of A glue. Therefore, vacuum removal of solvents is used, but rapid vacuuming will cause the solvent to boil and A glue to splash out and be wasted. Utility Model Content

[0005] The utility model aims to provide a vacuum solvent removal device to solve the technical problems existing in the above-mentioned background technology.

[0006] The technical solution of the utility model provides a vacuum solvent removal device, including a storage tube and a sealing cover arranged on the storage tube, the sealing cover is provided with an exhaust port and an indication window, a sealing plate is provided in the exhaust port, the sealing plate is rotatably connected to the exhaust port, and an indication component for detecting the air tightness of the storage tube is detachably provided on the indication window, and the indication component is sealed and connected to the indication window.

[0007] In a preferred embodiment, the sealing plate is arranged obliquely, a sealing strip is arranged on the outer periphery of the sealing plate, a clamping block 1 and a clamping block 2 are arranged at the upper and lower ends of the sealing plate respectively, and the clamping directions of the clamping block 1 and the clamping block 2 are opposite.

[0008] In a preferred embodiment, a card slot 1 and a card slot 2 are provided in the exhaust port, the card block 1 and the card block 2 correspond to the card slot 1 and the card slot 2 respectively, the opening of the card slot 1 is upward, and the opening of the card slot 2 is downward.

[0009] In a preferred embodiment, a protective cover is detachably provided on the exhaust port, and the protective cover is sealed and connected to the exhaust port.

[0010] In a preferred embodiment, the indication assembly includes a transparent cover sealed with the indication window, a mounting screen disposed in the transparent cover, a semi-permeable membrane disposed on the mounting screen, and an indication strip located above the semi-permeable membrane and fixed in the transparent cover.

[0011] In a preferred embodiment, a detachable sealing sheet is provided on the outer side of the mounting mesh plate, and the inside of the transparent cover is in a vacuum state.

[0012] In a preferred embodiment, scale lines are provided on the storage tube.

[0013] The beneficial effects of the technical solution of the utility model are:

[0014] 1. By setting an exhaust port with a small diameter, the vacuuming rate can be controlled to prevent the solvent from boiling. There is a sealing plate in the exhaust port. When vacuuming, the baffle opens outward. When the vacuum is closed in the chamber, the baffle faces inward and contacts the exhaust port to seal, ensuring the internal vacuum. The protective cover is used to further ensure the sealing.

[0015] 2. By setting the indicator component, the sealing inside the storage tube can be observed, which is helpful to promptly distinguish whether the A glue has deteriorated or become ineffective due to water absorption. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of the utility model.

[0017] Figure 2 This is the disassembly diagram of the structure of the utility model.

[0018] Figure 3 This is a disassembled diagram of the indicator assembly structure of the utility model.

[0019] Figure 4 This is an internal cross-sectional view of the exhaust port of the utility model.

[0020] Explanation of the reference numerals: 1 storage cylinder, 2 sealing cover, 3 exhaust port, 4 indication window, 5 sealing plate, 6 sealing strip, 7 card block one, 8 card block two, 9 card slot one, 10 card slot two, 11 protective cover, 12 indication assembly, 13 transparent cover, 14 mounting mesh plate, 15 semi-permeable membrane, 16 sealing sheet, 17 indication strip, 18 scale line. DETAILED DESCRIPTION

[0021] 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 sake of illustration and convenience of 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.

[0022] like Figure 1-4 As shown, the technical solution of the utility model provides a vacuum solvent removal device, including a storage tube 1 and a sealing cover 2 arranged on the storage tube 1, the sealing cover 2 is provided with an exhaust port 3 and an indication window 4, a sealing plate 5 is provided in the exhaust port 3, the sealing plate 5 is rotatably connected to the exhaust port 3, and the indication window 4 is detachably provided with an indication component 12 for detecting the air tightness of the storage tube 1, and the indication component 12 is sealed and connected to the indication window 4.

[0023] When removing solvents, the device is placed in a sealed container, and then the sealed container is evacuated by a vacuum pump, and the extracted gas is introduced into the water reservoir. Since most solvents are organic solvents, their saturated vapor pressure is large and the volatilization rate is fast. When evacuating, the organic solvent evaporates from the colloid and enters the water reservoir. Glue A is stored in the storage cylinder 1. When evacuating, the air pressure outside the storage cylinder 1 is lower than the air pressure inside the storage cylinder 1. Under the action of the pressure difference, the sealing plate 5 rotates upward to open the exhaust port 3, and the volatilized organic solvent is extracted from the exhaust port 3. After removing solvents, the sealed container returns to normal pressure. Because the storage barrel is in a vacuum state, under the action of the pressure difference, the sealing plate 5 rotates downward to seal the exhaust port 3 to prevent air from entering. The indicator component 12 on the indicator window 4 is used to detect the sealing inside the storage cylinder 1.

[0024] The sealing plate 5 is arranged obliquely, and a sealing strip 6 is arranged on the outer periphery of the sealing plate 5. A clamping block 7 and a clamping block 8 are arranged at the upper and lower ends of the sealing plate 5, respectively. The clamping directions of the clamping block 7 and the clamping block 8 are opposite. A clamping slot 9 and a clamping slot 10 are arranged in the exhaust port 3, and the clamping block 7 and the clamping block 8 correspond to the clamping slot 9 and the clamping slot 10, respectively. The opening of the clamping slot 9 is upward, and the opening of the clamping slot 10 is downward.

[0025] The card slot 1 9 and the card slot 2 10 are respectively fixed with the card block 1 7 and the card block 2 8. The sealing strip 6 can rotate at the axial connection with the sealing port, and rotate upward to open the exhaust port 3 or rotate downward to close the exhaust port 3 under the action of the pressure difference. The sealing strip 6 on the sealing plate 5 ensures the sealing of the connection with the exhaust port 3. The exhaust port 3 is detachably provided with a protective cover 11, and the protective cover 11 is sealed and connected with the exhaust port 3. After the solvent is removed, in order to avoid the sealing failure of the sealing plate 5, the sealing cover 2 is provided at the exhaust port 3 to achieve the sealing with the exhaust port 3.

[0026] The indicating assembly 12 includes a transparent cover 13 sealed with the indicating window 4, a mounting mesh plate 14 disposed in the transparent cover 13, a semi-permeable membrane 15 disposed on the mounting mesh plate 14, and an indicating strip 17 located above the semi-permeable membrane 15 and fixed in the transparent cover 13. A detachable sealing sheet 16 is disposed outside the mounting mesh plate 14, and the transparent cover 13 is in a vacuum state.

[0027] The semipermeable membrane 15 and the sealing sheet 16 are respectively located on both sides of the mounting mesh plate 14. The mounting mesh plate 14 is fixed in the transparent cover 13. The sealing sheet 16 is used to ensure the vacuum state in the transparent cover 13 to prevent the indicator strip 17 from failing before use. Before removing the solvent, the sealing sheet 16 is torn off, and then the transparent cover 13 and the indicator window 4 are sealed and fixed. Water and air can pass through the semipermeable membrane 15. The setting of the semipermeable membrane 15 prevents the solution in the barrel from contacting with the porous color-changing rubber strip, which affects the monitoring effect. The indicator strip 17 is obtained by adding 0.1-1wt% CoCl2 to the silicone rubber after swelling in water and soaking for 24 hours, then drying and cutting. The color of the indicator strip 17 changes to blue-pink-light red-dark red when it encounters water, wherein light red and dark red indicate that the air tightness has been completely destroyed. The color change of the indicator strip 17 is used to judge the sealing in the storage tube 1. The storage tube 1 is provided with a scale line 18 for indicating the capacity of A glue.

[0028] 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 vacuum desolventizing device, characterized in that: It comprises a storage tube and a sealing cover arranged on the storage tube, the sealing cover is provided with an exhaust port and an indication window, a sealing plate is arranged in the exhaust port, the sealing plate is rotatably connected to the exhaust port, an indication component for detecting the air tightness of the storage tube is detachably arranged on the indication window, and the indication component is sealed and connected to the indication window.

2. A vacuum desolventizing device according to claim 1, characterized in that: The sealing plate is arranged obliquely, a sealing strip is arranged on the outer periphery of the sealing plate, a clamping block 1 and a clamping block 2 are arranged at the upper and lower ends of the sealing plate respectively, and the clamping directions of the clamping block 1 and the clamping block 2 are opposite.

3. A vacuum desolventizing device according to claim 2, characterized in that: The exhaust port is provided with a card slot 1 and a card slot 2, the card block 1 and the card block 2 correspond to the card slot 1 and the card slot 2 respectively, the opening of the card slot 1 is upward, and the opening of the card slot 2 is downward.

4. A vacuum desolventizing device according to claim 1, characterized in that: A protective cover is detachably provided on the exhaust port, and the protective cover is sealed and connected to the exhaust port.

5. A vacuum desolventizing device according to claim 1, characterized in that: The indicating assembly comprises a transparent cover sealed with the indicating window, a mounting screen arranged in the transparent cover, a semi-permeable membrane arranged on the mounting screen, and an indicating strip located above the semi-permeable membrane and fixed in the transparent cover.

6. A vacuum desolventizing device according to claim 5, characterized in that: A detachable sealing sheet is arranged on the outer side of the installation mesh plate, and the inside of the transparent cover is in a vacuum state.

7. A vacuum desolventizing device according to claim 1, characterized in that: The storage tube is provided with scale lines.

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