Vacuum exhaust device for preservative film
By designing a fixed structure in the plastic film vacuum exhaust device and using the cooperation of the return spring and the limiting block, the problem of air entering when the exhaust pipe is taken out is solved, ensuring the maintenance of the vacuum effect and the improvement of the device's use effect.
Patent Information
- Application Number
- CN202421833400.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-31
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-07-31
AI Technical Summary
When the existing plastic wrap vacuum exhaust device removes the air extraction pipe from the plastic wrap, air is prone to enter the plastic wrap, affecting the vacuum effect and poor use effect.
A plastic film vacuum exhaust device including a vent pipe and a pipe head is designed. By setting a fixed structure between the vent pipe and the pipe head, the sealing and mobility of the vent pipe and the pipe head is ensured to prevent air from entering by using the cooperation of the return spring and the limiting block.
Effectively prevent air from entering the plastic wrap, maintaining the vacuum effect, and improving the use effect and efficiency of the device.
Smart Images
Figure CN222921835U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an exhaust device, in particular to a vacuum exhaust device for plastic wrap, belonging to the technical field of vacuum exhaust. Background Technique
[0002] Plastic wrap is used for food preservation and is a common household item. When using plastic wrap, food (such as fruits) is usually wrapped to isolate the wrapped items from external air for the purpose of preservation. A vacuum exhaust device for plastic wrap is a device used to remove air from vacuum-sealed fresh-keeping bags or bagged foods. This device is usually used in household kitchens or the food processing industry, which can extend the shelf life of food and prevent oxidation and spoilage.
[0003] However, the existing vacuum exhaust devices for plastic wrap usually pump out the air inside the plastic wrap through a vacuum pump for exhaust treatment. After the exhaust is completed, the suction pipe on the side of the vacuum pump needs to be removed. During the process of removing the suction pipe from inside the plastic wrap, air is likely to enter the inside of the plastic wrap, thus affecting the vacuum of the plastic wrap, and the use effect is not very good. Content of the Utility Model
[0004] (1) Technical Problems to be Solved
[0005] The purpose of the present utility model is to provide a vacuum exhaust device for plastic wrap to solve the above problems, that is, to solve the problem that during the process of removing the suction pipe from inside the plastic wrap in the prior art, air is likely to enter the inside of the plastic wrap, thus affecting the vacuum of the plastic wrap, and the use effect is not very good.
[0006] (2) Technical Solutions
[0007] The present utility model is realized through the following technical solutions: a vacuum exhaust device for plastic wrap, including a suction pipe and a pipe head. A sealing gasket is fixedly installed on one side of the pipe head, and a sealing bone strip is fixedly installed inside the pipe head. A fixing structure is arranged between the suction pipe and the pipe head. The fixing structure includes two first fixing brackets and two second fixing brackets. The two first fixing brackets are fixedly installed on the outer side of the suction pipe, and the two second fixing brackets are fixedly installed on the outer side of the pipe head. A fixing plug is fixedly installed on one side of each of the two first fixing brackets, and two first return springs are fixedly installed inside the top of each of the two fixing plugs. A limiting block is fixedly installed at one end of each of the two first return springs. The provided sealing gasket can effectively seal when the suction pipe and the pipe head are connected and installed, thus ensuring that there is no intermediate air leakage during air extraction.
[0008] Preferably, a first sliding groove is opened on one side of the second fixing bracket, and the fixing plug and the first sliding groove are of matching sizes.
[0009] Preferably, a second sliding groove is formed at the top of the fixed insertion block, and the limiting block is arranged inside the second sliding groove and is in sliding contact with the fixed insertion block.
[0010] Preferably, a square limiting groove is formed at the top of the second fixing frame. The limiting block and the square limiting groove are of matching sizes. The provided square limiting groove can, when the fixed insertion block moves to a certain position, move the limiting block into the square limiting groove and lock it through the elastic effect of the first return spring, thereby limiting and fixing the position between the air extraction pipe and the pipe head.
[0011] Preferably, two second return springs are fixedly installed at the top of each of the two first fixing frames. One end of each of the two second return springs is fixedly installed with a top plate. A connecting plate is fixedly installed at the bottom of the top plate, and a pressing plate is fixedly installed at the bottom of the connecting plate.
[0012] Preferably, a pressing block is fixedly installed at the bottom of the top plate. The pressing block is arranged above the square limiting groove of the second fixing frame and is slightly smaller than the size of the square limiting groove of the second fixing frame. The fact that the size of the pressing block is smaller than the size of the square limiting groove of the second fixing frame allows for horizontal movement when the pressing block is pressed down, so that the staff can pull the air extraction pipe to move the position of the limiting block, preventing the device from getting stuck and unable to move.
[0013] Preferably, two vertical plates are fixedly installed at the top of the first fixing frame. Limiting plates are fixedly installed at the tops of the two vertical plates. The top plate is arranged outside the two vertical plates and is in sliding contact with the two vertical plates. The provided two vertical plates can effectively limit the moving position of the top plate, and the provided limiting plates can prevent the top plate from moving too far and slipping out of the outside of the two vertical plates.
[0014] The present utility model provides a fresh-keeping film vacuum exhaust device, and its beneficial effects are as follows:
[0015] For this fresh-keeping film vacuum exhaust device, by pressing down on the two limiting blocks, the limiting blocks enter the second sliding groove of the fixed insertion block from the square limiting groove of the second fixing frame, thereby canceling the fixation between the first fixing frame and the second fixing frame. At this time, slightly pulling the air extraction pipe can prevent the limiting blocks from popping out under the elastic action of the first return spring due to being blocked by the second fixing frame. Then, releasing the two top plates, under the elastic action of the second return springs, the two top plates will be driven to move back to their original positions. At this time, the air extraction pipe and the pipe head can be separated, and then the fresh-keeping film can be wound around the pipe head for storage, which can ensure the vacuum effect of the fresh-keeping film, prevent air from entering, and improve the use effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 is a schematic diagram of the overall structure of the present utility model;
[0017] Figure 2 This is a partial cross-sectional view of the present utility model;
[0018] Figure 3 This is a cross-sectional view of the fixing structure of the present utility model;
[0019] Figure 4 This is the Figure 3 enlarged view of the structure at position A of the present utility model.
[0020]
Description of Main Component Symbols
[0021] 1. Exhaust pipe; 2. Pipe head; 3. Sealing gasket; 4. Sealing bone strip; 5. First fixing bracket; 6. Second fixing bracket; 7. Fixed insertion block; 8. First return spring; 9. Limit block; 10. Vertical plate; 11. Limit plate; 12. Second return spring; 13. Top plate; 14. Pressing block; 15. Connecting plate; 16. Pressing plate. Specific Embodiment
[0022] The embodiment of the present utility model provides a vacuum exhaust device for fresh-keeping film.
[0023] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 , which includes an exhaust pipe 1 and a pipe head 2. A sealing gasket 3 is fixedly installed on one side of the pipe head 2, and a sealing bone strip 4 is fixedly installed inside the pipe head 2. A fixing structure is provided between the exhaust pipe 1 and the pipe head 2. The fixing structure includes two first fixing brackets 5 and two second fixing brackets 6. The two first fixing brackets 5 are fixedly installed on the outer side of the exhaust pipe 1, the two second fixing brackets 6 are fixedly installed on the outer side of the pipe head 2. A fixed insertion block 7 is fixedly installed on one side of each of the two first fixing brackets 5, and two first return springs 8 are fixedly installed on the inner side of the top of each of the two fixed insertion blocks 7, and a limit block 9 is fixedly installed at one end of each of the two first return springs 8.
[0024] In this embodiment, a first sliding groove is formed on one side of the second fixing bracket 6, and the size of the fixed insertion block 7 matches that of the first sliding groove.
[0025] In this embodiment, a second sliding groove is formed on the top of the fixed insertion block 7, and the limit block 9 is arranged inside the second sliding groove and is in sliding contact with the fixed insertion block 7.
[0026] In this embodiment, a square limit groove is formed on the top of the second fixing bracket 6, and the size of the limit block 9 matches that of the square limit groove.
[0027] In this embodiment, two second return springs 12 are fixedly installed on the top of each of the two first fixing brackets 5. One end of each of the two second return springs 12 is fixedly installed with a top plate 13. The bottom of the top plate 13 is fixedly installed with a connecting plate 15. The bottom of the connecting plate 15 is fixedly installed with a pressing plate 16.
[0028] In this embodiment, a pressing block 14 is fixedly installed at the bottom of the top plate 13. The pressing block 14 is arranged above the square limiting groove of the second fixing bracket 6 and is slightly smaller than the size of the square limiting groove of the second fixing bracket 6.
[0029] In this embodiment, two vertical plates 10 are fixedly installed on the top of the first fixing bracket 5. Limiting plates 11 are fixedly installed on the top of each of the two vertical plates 10. The top plate 13 is arranged outside the two vertical plates 10 and is in sliding contact with the two vertical plates 10.
[0030] It should be noted that the present utility model is a fresh-keeping film vacuum exhaust device. When in use, the fresh-keeping film is wrapped around the item to be vacuum fresh-keeping, and then the fresh-keeping film is wound around the outside of one end of the pipe head 2. Then one end of the air extraction pipe 1 is connected to a vacuum pump. Then the vacuum pump is started, and the air inside the fresh-keeping film is extracted through the air extraction pipe 1 and the pipe head 2, so that the inside of the fresh-keeping film is in a vacuum state;
[0031] After the inside of the fresh-keeping film is evacuated, press down the two top plates 13. The two top plates 13 will respectively drive the two pressing plates 16 to move in opposite directions through the two connecting plates 15 to squeeze and fasten the sealing bone strip 4 fixedly installed inside the pipe head 2 between the two pressing plates 16, so that the sealing bone strip 4 seals the pipe head 2. At this time, the two pressing blocks 14 will move accordingly to press down the two limiting blocks 9, so that the limiting blocks 9 enter the second sliding groove of the fixed insertion block 7 from the square limiting groove of the second fixing bracket 6, thereby canceling the fixation between the first fixing bracket 5 and the second fixing bracket 6. At this time, slightly pull the air extraction pipe 1, and the limiting block 9 can be blocked by the second fixing bracket 6 and cannot pop out by the elastic action of the first return spring 8. Then release the two top plates 13. Under the elastic action of the second return springs 12, the two top plates 13 will be driven to move back to their original positions. At this time, the air extraction pipe 1 and the pipe head 2 can be separated, and then the fresh-keeping film is wound around the pipe head 2 for storage, which can ensure the vacuum effect of the fresh-keeping film, prevent air from entering, and improve the use effect of the device.
[0032] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and the descriptions in the specification are only used to illustrate the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and all these changes and improvements fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.
Claims
1. A vacuum exhaust device for cling film, comprising an exhaust pipe (1) and a pipe head (2), characterized in that: A sealing pad (3) is fixedly installed on one side of the tube head (2), a sealing bone strip (4) is fixedly installed on the inner side of the tube head (2), a fixing structure is arranged between the exhaust pipe (1) and the tube head (2), the fixing structure comprises two No. 1 fixing frames (5) and two No. 2 fixing frames (6), the two No. 1 fixing frames (5) are fixedly installed on the outer side of the exhaust pipe (1), the two No. 2 fixing frames (6) are fixedly installed on the outer side of the tube head (2), a fixing block (7) is fixedly installed on one side of the two No. 1 fixing frames (5), two first return springs (8) are fixedly installed on the inner side of the top of the two fixed return springs (7), and a limiting block (9) is fixedly installed on one end of the two first return springs (8).
2. A vacuum exhaust device for cling film according to claim 1, characterized in that: A first sliding groove is provided on one side of the second fixing frame (6), and the sizes of the fixing plug (7) and the first sliding groove match each other.
3. The vacuum exhaust device for cling film according to claim 1, characterized in that: A second sliding groove is provided on the top of the fixed plug block (7), and the limit block (9) is arranged inside the second sliding groove and is in sliding contact with the fixed plug block (7).
4. The vacuum exhaust device for cling film according to claim 1, characterized in that: A square limiting groove is provided on the top of the second fixing frame (6), and the limiting block (9) and the square limiting groove match in size.
5. The vacuum exhaust device for cling film according to claim 1, characterized in that: Two second return springs (12) are fixedly mounted on the top of the two No. 1 fixing frames (5), a top plate (13) is fixedly mounted on one end of the two second return springs (12), a connecting plate (15) is fixedly mounted on the bottom of the top plate (13), and a pressing plate (16) is fixedly mounted on the bottom of the connecting plate (15).
6. A vacuum exhaust device for cling film according to claim 5, characterized in that: A pressing block (14) is fixedly mounted on the bottom of the top plate (13); the pressing block (14) is arranged above the square limiting groove of the second fixing frame (6) and is slightly smaller than the size of the square limiting groove of the second fixing frame (6).
7. The vacuum exhaust device for cling film according to claim 5, characterized in that: Two vertical plates (10) are fixedly mounted on the top of the first fixing frame (5), and limiting plates (11) are fixedly mounted on the tops of the two vertical plates (10). The top plate (13) is arranged on the outside of the two vertical plates (10) and is in sliding contact with the two vertical plates (10).