Sealing machine
By designing independent channel structure and position-optimized detection and air outlets in the chamber of the sealer, the problem of water inlet of the negative pressure switch is solved, extending the service life and improving the safety of the sealer.
Patent Information
- Application Number
- CN202421263847.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-04
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-06-04
AI Technical Summary
There is a risk of water inlet in the negative pressure switch in the existing sealing machine, which leads to rust and failure, affecting the normal use of the sealing machine.
A sealing machine is designed, and the chamber has an independent first channel and a second channel. The negative pressure switch is communicated with the chamber through the first channel. The vacuum pump is communicated with the chamber through the second channel. The detection port is located at a high position in the chamber. , the air extraction port is at a low level, ensuring that liquid is discharged through the air extraction port first, reducing the possibility of liquid entering the negative pressure switch.
It effectively avoids the liquid entering the negative pressure switch when the vacuum pump is working, reduces the risk of rust of the negative pressure switch, extends its service life, and improves the operating safety of the sealer.
Smart Images
Figure 00000000_0000_ABST
Abstract
Description
Technical Field
[0001] The utility model shows a sealing machine, belonging to the technical field of sealing devices. Background Art
[0002] The sealing machine puts food into special packaging bags, extracts the air in the bag through a vacuum device, and completes the sealing process when the predetermined vacuum degree is reached. The vacuum treatment in the packaging bag can effectively avoid oxidation, weight loss and loss of taste of food, and can also prevent the items in the bag from being contaminated again, greatly increasing the shelf life of the food.
[0003] The existing sealing machine usually includes a main body, in which a control component, a heating component, a negative pressure switch and an exhaust component are arranged. When exhausting air, a sealed cavity is formed in the main body, and the bag opening of the packaging bag is in the sealed cavity. The exhaust component performs vacuum exhaust on the packaging bag. When the negative pressure switch detects that the air pressure in the sealed cavity drops to a specified value, the control component controls the heating component to seal the packaging bag, thereby completing the vacuum sealing. In the existing sealing machine, the negative pressure switch is connected to the pipeline of the exhaust component. When there is liquid in the packaging bag, the exhaust component will suck the liquid into the interior of the sealing machine during the vacuum exhaust process, and some of the liquid may enter the negative pressure switch, which will cause the negative pressure switch to rust and fail, affecting the normal use of the sealing machine. Utility Model Content
[0004] The utility model aims to solve the problem of water ingress risk in the negative pressure switch of the existing sealing machine, and to provide a sealing machine to reduce the possibility of water ingress in the negative pressure switch.
[0005] To solve the above technical problems, the utility model adopts the following technical solutions:
[0006] A sealing machine comprises a main body, wherein the main body is provided with a sealing part and a chamber with an open opening, wherein the sealing part seals the chamber to form a sealed chamber, wherein a negative pressure switch and a vacuum pump are provided in the main body, wherein the chamber has a first channel and a second channel, wherein the negative pressure switch is connected to the chamber through the first channel, wherein the vacuum pump is connected to the chamber through the second channel, wherein the first channel has a detection port in the chamber, wherein the second channel has an exhaust port in the chamber, wherein the distance between the detection port and the bottom wall of the chamber is greater than the distance between the exhaust port and the bottom wall of the chamber.
[0007] The beneficial effects of adopting the utility model are:
[0008] The chamber described in the utility model has a first channel and a second channel, the negative pressure switch monitors the air pressure in the chamber through the first channel, and the vacuum pump performs vacuum extraction on the chamber through the second channel. When the vacuum pump performs vacuum extraction, when there is a lot of liquid in the chamber, part of the liquid will be sucked into the second channel under the action of the vacuum pump, and the first channel connected to the negative pressure switch is relatively independent of the second channel, and the negative pressure switch will not generate suction at the detection port of the first channel, so that the liquid can be effectively prevented from entering the negative pressure switch when the vacuum pump is working, reducing the possibility of rust on the negative pressure switch, helping to extend the service life of the negative pressure switch, and also improving the safety of the operation of the sealing machine; in addition, the position of the detection port in the chamber is higher than the position of the air extraction port. When there is a lot of liquid in the chamber, the liquid will first submerge the air extraction port, so that the liquid in the chamber is first discharged from the air extraction port, and the second channel can also control the height of the liquid level to prevent the liquid in the chamber from approaching the detection port, reduce the possibility of liquid entering the negative pressure switch from the detection port, reduce the risk of water ingress to the negative pressure switch, and protect the negative pressure switch.
[0009] Preferably, the sealing machine further comprises a water collecting box with an open top, the water collecting box is placed in the chamber, and the detection port and the air extraction port are both located at the lower side of the water collecting box. By adopting the above-mentioned technical solution, the water collecting box can collect most of the liquid in the packaging bag, reduce the liquid flowing into the bottom wall of the chamber, and reduce the height of the liquid accumulated on the bottom wall of the chamber, which can effectively prevent the liquid level on the bottom wall of the chamber from exceeding the detection port, thereby reducing the risk of water ingress into the negative pressure switch; in addition, the detection port and the air extraction port are both located at the lower side of the water collecting box, and the water collecting box can form a shield on the upper side of the detection port and the air extraction port, thereby preventing the liquid from directly dripping from the upper side of the detection port into the second channel, further reducing the possibility of liquid entering the second channel, and improving the safety of the negative pressure switch.
[0010] Preferably, the water collecting box is provided with a first avoidance groove, and the detection port and the air extraction port are both located in the first avoidance groove. With the above technical solution, the detection port and the air extraction port are both located in the first avoidance groove, so that the detection port and the air extraction port can be kept connected, so that the negative pressure switch can timely monitor the air pressure in the chamber. When the air pressure in the chamber drops to a specified value, the negative pressure switch is activated and sends a signal to the control component. The control component controls the vacuum pump according to the signal of the negative pressure switch, and the vacuum pump is in a power-off state, so that the vacuum pump can stop running in time.
[0011] Preferably, the water collecting box is provided with a first avoidance groove and a second avoidance groove, the detection port is in the first avoidance groove, and the air extraction port is in the second avoidance groove. With the above technical solution, the detection port extends into the first avoidance groove, which can reduce the space around the detection port, thereby reducing the amount of water vapor around the detection port, helping to reduce the possibility of rusting of the negative pressure switch due to water vapor erosion, and can significantly extend the service life of the negative pressure switch.
[0012] Preferably, the first avoidance groove is arranged on the outside of the side plate of the water collecting box, and the first avoidance groove extends downward to the bottom plate of the water collecting box, and a gap is formed at the bottom plate of the water collecting box for the first channel to enter the first avoidance groove. The above-mentioned technical solution is adopted to arrange the first avoidance groove on the outside of the water collecting box, so that the first avoidance groove and the chamber can be kept in a connected state, which can prevent the first avoidance groove and the chamber from being separated due to excessive liquid, so that the negative pressure switch can accurately monitor the air pressure in the chamber. When the air pressure in the chamber drops to the specified value, the negative pressure switch can shut down the vacuum pump in time to avoid the vacuum pump from being in an invalid operating state for a long time, so that the negative pressure switch can timely feedback the air pressure condition of the chamber, and effectively improve the sealing efficiency of the sealing machine.
[0013] Preferably, the first channel and the second channel are both located on the bottom wall of the chamber. With the above technical solution, the bottom wall of the chamber has a larger setting space, making the setting of the first channel and the second channel simpler and more convenient. In addition, placing the first channel and the second channel on the bottom wall of the chamber can effectively reduce the height of the chamber, thereby reducing the overall thickness of the sealing machine, making the sealing machine more compact and light, which is convenient for transportation and storage.
[0014] Preferably, the air extraction port does not protrude from the bottom wall of the chamber. With the above technical solution, when the liquid flows into the chamber, the liquid can flow into the second channel along the air extraction port, thereby reducing the accumulation of liquid in the chamber, helping to keep the chamber dry, and reducing the possibility of water vapor entering the negative pressure switch and corroding the negative pressure switch.
[0015] Preferably, the first channel is located on the side wall of the chamber, and the second channel is located on the bottom wall of the chamber; or, both the first channel and the second channel are located on the side wall of the chamber.
[0016] Preferably, the first channel and the second channel both include a connecting portion and a through hole penetrating the connecting portion, and the connecting portion penetrates the wall of the chamber and extends to the outside of the chamber so that the inside of the chamber is connected to the outside of the chamber. With the above technical solution, the negative pressure switch and the vacuum pump can be sealed and connected to the connecting portions of the first channel and the second channel respectively through a vacuum tube, making the connection between the negative pressure switch and the first channel, and the connection between the vacuum pump and the second channel simpler, and achieving better sealing.
[0017] Preferably, the first channel and the second channel are integrated with the wall of the chamber. The above technical solution can improve the sealing of the connection between the chamber and the first channel and the second channel, thereby improving the vacuum pump's air extraction effect on the packaging bag, which helps to improve the vacuum packaging effect.
[0018] Other features and advantages of the present invention will be disclosed in detail in the following specific implementations and drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The utility model is further described below in conjunction with the accompanying drawings:
[0020] Figure 1 It is a cross-sectional view of a sealing machine of the utility model;
[0021] Figure 2 for Figure 1 A partial enlarged view of part A;
[0022] Figure 3 This is a schematic diagram of the structure of the outer side of the chamber of a sealing machine of the utility model. Figure 1 ;
[0023] Figure 4 This is a schematic diagram of the structure of the outer side of the chamber of a sealing machine of the utility model. Figure 2 ;
[0024] Figure 5 It is a partial cross-sectional view of the chamber in the second embodiment of the present utility model.
[0025] Figure numerals: 1 main body, 11 chamber, 111 bottom wall, 112 side wall, 12 first channel, 121 detection part, 122 first connecting part, 123 first through hole, 124 detection port, 13 second channel, 131 exhaust part, 132 second connecting part, 133 second through hole, 134 exhaust port, 2 water collecting box, 21 first avoidance groove, 22 second avoidance groove, 3 negative pressure switch, 31 first vacuum tube, 4 vacuum pump, 41 second vacuum tube, 5 control component. DETAILED DESCRIPTION
[0026] The following is an explanation and description of the technical scheme of the embodiment of the utility model in conjunction with the drawings of the embodiment of the utility model, but the following embodiment is only a preferred embodiment of the utility model, not all. Based on the embodiment in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the utility model.
[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly defined.
[0029] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0030] Embodiment 1:
[0031] like Figures 1 to 4 As shown, this embodiment shows a sealing machine, including a body 1, wherein the body 1 is provided with a control component 5, a heating component, a negative pressure switch 3, a vacuum pump 4, a sealing part and a chamber 11 with an open top, wherein the sealing part is located on the upper side of the open chamber 11, and the chamber 11 has a first channel 12 and a second channel 13, wherein the negative pressure switch 3 is connected to the chamber 11 through the first channel 12, and the vacuum pump 4 is connected to the chamber 11 through the second channel 13, and when the sealing machine performs vacuum sealing on a packaging bag, the bag opening of the packaging bag extends into the chamber 11, and the sealing part moves toward the chamber 11 and seals the open top of the chamber 11 The vacuum pump 4 is closed to form a sealed cavity in the chamber 11, and then the control component 5 controls the vacuum pump 4 to start, and the vacuum pump 4 evacuates the chamber 11 through the second channel 13, thereby extracting the gas in the packaging bag and the chamber 11. When the air pressure in the chamber 11 drops to a specified value, the negative pressure switch 3 is actuated and sends a signal to the control component 5. The control component 5 controls the vacuum pump 4 according to the signal of the negative pressure switch 3, and the vacuum pump 4 is in a power-off state, and the vacuum pump 4 stops evacuating gas. At the same time, the control component 5 controls the heating component to start, and the heating component heats and seals the bag opening of the packaging bag, thereby completing the vacuum sealing of the packaging bag.
[0032] It should be noted that the main body 1 described in this embodiment is an integrated type, and the main body 1 is provided with a sealing port for the bag mouth of the packaging bag to extend into, and the sealing port is communicated with the chamber 11, and the sealing portion is arranged inside the main body 1. When the packaging bag is vacuum sealed, the bag mouth of the packaging bag extends into the chamber 11 from the sealing port, and the sealing portion moves toward the chamber 11 and closes the opening of the chamber 11, so that the chamber 11 forms a sealed cavity.
[0033] like Figure 1 and Figure 2 As shown, in this embodiment, the first channel 12 and the second channel 13 are both located on the bottom wall 111 of the chamber 11, the first channel 12 has a detection port 124 located in the chamber 11, and the second channel 13 has an air suction port 134 located in the chamber 11, and the distance between the detection port 124 and the bottom wall 111 of the chamber 11 is greater than the distance between the air suction port 134 and the bottom wall 111 of the chamber 11. When the vacuum pump 4 performs vacuum extraction, if there is liquid in the packaging bag, part of the liquid will be sucked into the chamber 11 under the action of the vacuum pump 4, and may be sucked into the second channel 13, while the first channel 12 and the second channel 13 connected to the negative pressure switch 3 are relatively independent, and at the same time, the negative pressure switch 3 will not generate suction at the detection port 124 of the first channel 12, thereby effectively avoiding the vacuum pump 4 from working. When the liquid flows into the negative pressure switch 3, the possibility of rust on the negative pressure switch 3 is reduced, which helps to extend the service life of the negative pressure switch 3 and improve the safety of the sealing machine operation. In addition, when the liquid flowing into the chamber 11 is large, the liquid will accumulate in the bottom wall 111 of the chamber 11. Since the position of the detection port 124 in the chamber 11 is higher than the position of the air suction port 134, as the liquid increases, the liquid will first cover the air suction port 134, so that the liquid in the chamber 11 is discharged from the air suction port 134 first. At the same time, the second channel 13 can also control the amount of liquid accumulated in the chamber 11, avoid the liquid in the chamber 11 from approaching the detection port 124, reduce the possibility of liquid entering the negative pressure switch 3 from the detection port 124, reduce the risk of water entering the negative pressure switch 3, and protect the negative pressure switch 3.
[0034] It should be noted that, in the distance between the detection port 124 and the bottom wall 111 of the chamber 11 and the distance between the exhaust port 134 and the bottom wall 111 of the chamber 11 described in this embodiment, the bottom wall 111 of the chamber 11 referred to is the same place, that is, when comparing the distances, first select a place on the bottom wall 111 of the chamber 11 as a reference plane, and the height difference between the detection port 124 and the reference plane is the distance between the detection port 124 and the bottom wall 111 of the chamber 11, and similarly, the height difference between the exhaust port 134 and the reference plane is the distance between the exhaust port 134 and the bottom wall 111 of the chamber 11; of course, the bottom wall 111 of the chamber 11 described in this embodiment is a horizontal plane as a whole, so when comparing the distances, the entire bottom wall 111 can be used as a reference plane.
[0035] like Figures 2 to 4As shown, in this embodiment, the first channel 12 includes a first connecting portion 122, a detection portion 121 and a first through hole 123, the first connecting portion 122 and the detection portion 121 are an integrated structure, the first through hole 123 simultaneously penetrates the first connecting portion 122 and the detection portion 121, and the detection port 124 is located at an end of the detection portion 121 away from the first connecting portion 122, and the second channel 13 includes a second connecting portion 132, an air extraction portion 131 and a second through hole 133, the second connecting portion 132 and the air extraction portion 131 are an integrated structure, the second through hole 133 simultaneously penetrates the second connecting portion 132 and the air extraction portion 131, and the air extraction port 134 is located at an end of the air extraction portion 131 away from the second connecting portion At one end of 132, the detection part 121 and the exhaust part 131 described in this embodiment are both extended into the chamber 11, and the first connection part 122 and the second connection part 132 are both located on the outside of the chamber 11. The negative pressure switch 3 is sealedly connected to the first connection part 122 through the first vacuum tube 31, so that the negative pressure switch 3 is kept in communication with the chamber 11, and the vacuum pump 4 is sealedly connected to the second connection part 132 through the second vacuum tube 41, so that the vacuum pump 4 is kept in communication with the chamber 11. The first connection part 122 and the second connection part 132 are provided, so that the connection between the negative pressure switch 3 and the first channel 12, and the connection between the vacuum pump 4 and the second channel 13 can be simpler, and better sealing can be achieved.
[0036] Of course, it is understandable that in other embodiments, the air suction port 134 does not protrude from the bottom wall 111 of the chamber 11, that is, the second channel 13 may not be provided with the air suction portion 131, that is, the second connecting portion 132 passes through the bottom wall 111 of the chamber 11 and extends to the outside of the chamber 11, and the second through hole 133 passes through the second connecting portion 132 to connect the inside of the chamber 11 with the outside of the chamber 11. When the liquid flows into the chamber 11, the liquid can flow into the second channel 13 along the air suction port 134, thereby reducing the accumulation of liquid in the chamber 11, which helps to keep the chamber 11 dry and reduce the possibility of water vapor entering the negative pressure switch 3 and corroding the negative pressure switch 3; in addition, when it is inconvenient to maintain the height difference between the air suction port 134 and the detection port 124, the length of the detection portion 121 can be reduced to reduce the influence of the detection portion 121 on the height of the water collecting box 2 and the chamber 11.
[0037] In the present embodiment, the first channel 12 and the second channel 13 are both integrated with the bottom wall 111 of the chamber 11, which can omit the setting of fixing elements for fixing the first channel 12 and the second channel 13, and the setting of sealing elements for maintaining the seal, thereby simplifying the overall structure of the chamber 11 and the first channel 12 and the second channel 13, and also can improve the sealing of the connection between the chamber 11 and the first channel 12 and the second channel 13, thereby improving the vacuum pump 4's evacuation effect on the packaging bag, which helps to improve the vacuum packaging effect.
[0038] like Figure 2 and Figure 3 As shown, the sealing machine described in this embodiment also includes a water collecting box 2 with an open top, the water collecting box 2 includes a bottom plate and side plates arranged around the bottom plate, the water collecting box 2 is placed in the chamber 11 and is in the chamber 11, and there is a gap between the bottom plate of the water collecting box 2 and the bottom wall 111 of the chamber 11, and there is a gap between the side plate of the water collecting box 2 and the side wall 112 of the chamber 11, the detection port 124 and the air suction port 134 are both located at the lower side of the water collecting box 2, when the vacuum pump 4 is performing vacuum extraction, the air in the chamber 11 and the packaging bag flows into the second channel 13 from the gap, and when the liquid in the packaging bag is sucked into the chamber 11, the water collecting box 2 can collect most of the liquid in the packaging bag, reducing the amount of liquid flowing into the chamber The liquid on the bottom wall 111 of the chamber 11 reduces the height of the liquid accumulated on the bottom wall 111 of the chamber 11, which can effectively prevent the liquid level on the bottom wall 111 of the chamber 11 from exceeding the detection port 124, thereby reducing the risk of water entering the negative pressure switch 3; in addition, the detection port 124 and the air suction port 134 are both located at the lower side of the water collecting box 2, and the water collecting box 2 can form a shield on the upper side of the detection port 124 and the air suction port 134, thereby preventing the liquid from directly dripping from the upper side of the detection port 124 into the second channel 13, further reducing the possibility of liquid entering the second channel 13, and improving the safety of the negative pressure switch 3; of course, it can be understood that in other embodiments, the water collecting box 2 may not be set in the sealing machine.
[0039] like Figure 3 As shown, the lower side of the bottom plate of the water collecting box 2 described in this embodiment is provided with a first avoidance groove 21 and a second avoidance groove 22, the detection part 121 extends into the first avoidance groove 21 so that the detection port 124 is in the first avoidance groove 21, and the exhaust part 131 extends into the second avoidance groove 22 so that the exhaust port 134 is in the second avoidance groove 22, the first avoidance groove 21 and the second avoidance groove 22 can make the water collecting box 2 avoid the exhaust part 131 and the detection part 121, so that the water collecting box 2 has a larger volume and can also be normally installed in the chamber 11, thereby improving the water collection capacity of the water collecting box 2; in addition, the first avoidance groove 21 can form a shield for the detection port 124, which can reduce the space above the detection port 124, thereby reducing the amount of water vapor on the upper side of the detection port 124, which helps to reduce the possibility of rust on the negative pressure switch 3 due to water vapor erosion, and can significantly extend the service life of the negative pressure switch 3.
[0040] Of course, it is understandable that in other embodiments, the lower side of the bottom plate of the water collecting box 2 may also be only provided with a first avoidance groove 21, and the detection part 121 and the air extraction part 131 both extend into the first avoidance groove 21, that is, the detection port 124 and the air extraction port 134 are simultaneously in the first avoidance groove 21, so that the detection port 124 and the air extraction port 134 can remain connected, so that the negative pressure switch 3 can timely monitor the air pressure in the chamber 11. When the air pressure in the chamber 11 drops to a specified value, the negative pressure switch 3 blocks the action and sends a signal to the control component 5. The control component 5 controls the vacuum pump 4 according to the signal of the negative pressure switch 3, and the vacuum pump 4 is in a power-off state, so that the vacuum pump 4 can stop running in time; avoid the phenomenon of isolation between the detection port 124 and the air extraction port 134, so that the detection port 124 cannot monitor the actual air pressure in the chamber 11, causing the vacuum pump 4 to be in an air extraction state for a long time.
[0041] Embodiment 2:
[0042] like Figure 5 As shown, the main difference between this embodiment and the first embodiment is that, in this embodiment, the first channel 12 is located on the side wall 112 of the chamber 11, and the second channel 13 is located on the bottom wall 111 of the chamber 11. The corresponding first avoidance groove 21 is arranged on the outer side of the side plate of the water collecting box 2, and the first avoidance groove 21 extends downward to the bottom plate of the water collecting box 2, and a gap is formed at the bottom plate of the water collecting box 2 for the first channel 12 to enter the first avoidance groove 21. The second avoidance groove 22 is arranged on the lower side of the bottom plate of the water collecting box 2, and the air extraction part 131 of the second channel 13 extends into the second avoidance groove 22. In this embodiment, the first avoidance groove 21 is connected with the gap between the side wall 112 of the chamber 11 and the water collecting box 2, that is, the first avoidance groove 21 and the chamber 11 remain in a connected state, which can prevent the first avoidance groove 21 and the chamber 11 from being separated due to excessive liquid, so that the negative pressure switch 3 can accurately monitor the air pressure in the chamber 11. When the air pressure in the chamber 11 drops to a specified value, the negative pressure switch 3 can send a signal to the control component 5 in time, and shut down the vacuum pump 4 through the control component 5, so as to avoid the vacuum pump 4 being in an invalid operating state for a long time, so that the negative pressure switch 3 can timely feedback the air pressure condition of the chamber 11, and effectively improve the sealing efficiency of the sealing machine.
[0043] Embodiment three:
[0044] The main difference between this embodiment and the second embodiment is that in this embodiment, the detection port of the first channel does not protrude from the side wall of the chamber, that is, the first channel may not be provided with a detection portion, and the corresponding water collecting box may also omit the setting of the first avoidance groove, and only the second avoidance groove for the second channel to extend into is provided on the bottom plate of the water collecting box. The detection port in this embodiment can be directly connected through the gap between the side wall and the water collecting box to realize the monitoring of the air pressure in the chamber; after omitting the first avoidance groove, the volume of the water collecting box can be increased, so that the water collecting box can accommodate more liquid and reduce the liquid flowing into the bottom wall of the chamber.
[0045] Embodiment 4:
[0046] The main difference between this embodiment and the second embodiment is that in this embodiment, the first channel and the second channel are both located on the side wall of the chamber, and a first avoidance groove is provided on the outside of the water collecting box. The first avoidance groove is arranged on the outside of the side plate of the water collecting box, and the first avoidance groove extends downward to the bottom plate of the water collecting box, and a gap is formed at the bottom plate of the water collecting box for the first channel to enter the first avoidance groove, and the first channel and the second channel both extend into the first avoidance groove.
[0047] Of course, it is understandable that in other embodiments, the outer side of the water collecting box may also be provided with a second avoidance groove, and the second avoidance groove may also be arranged on the outer side of the side plate of the water collecting box. The second avoidance groove extends downward to the bottom plate of the water collecting box, and a gap is formed at the bottom plate of the water collecting box for the second channel to enter the second avoidance groove. In this embodiment, the first channel extends into the first avoidance groove, and the second channel extends into the second avoidance groove.
[0048] It should be noted that, the detection port and the air extraction port described in the present embodiment may not protrude from the side wall of the chamber, that is, the first channel may not be provided with a detection part, the second channel may not be provided with an air extraction part, and the corresponding water collecting box may also omit the setting of the first avoidance groove, the detection port can be connected with the gap between the side wall and the water collecting box to realize the monitoring of the air pressure in the chamber, and similarly, the air extraction port can be connected with the gap between the side wall and the water collecting box to realize vacuum extraction of the chamber; of course, it is understandable that in other embodiments, only the detection port may not protrude from the side wall of the chamber, and the air extraction port may protrude from the side wall of the chamber, that is, the first channel may not be provided with a detection part, and the second channel has an air extraction part; or only the air extraction port may not protrude from the side wall of the chamber, and the detection port may protrude from the side wall of the chamber, that is, the second channel may not be provided with an air extraction part, and the first channel has a detection part.
[0049] Embodiment five:
[0050] The main difference between this embodiment and the first embodiment is that the main body described in this embodiment may also include a base and a cover rotatably connected to the base, the control component, the heating component, the negative pressure switch and the vacuum pump are all arranged in the base, and a chamber with an open top is provided on the upper side of the base, and the sealing part is arranged on the cover. When the packaging bag is vacuum sealed, the bag mouth of the packaging bag is placed in the chamber, and the cover is rotated toward the base and covered with the base. At this time, the sealing part and the opening of the chamber are closed to form a sealed cavity.
[0051] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Those skilled in the art should understand that the utility model includes but is not limited to the contents described in the drawings and the above specific implementation. Any modification that does not deviate from the functional and structural principles of the utility model will be included in the scope of the claims.
Claims
1. A sealing machine, comprising a body, the body being provided with a sealing portion and a chamber having an open opening, the sealing portion sealing the chamber so that the chamber forms a sealed cavity, characterized in that: A negative pressure switch and a vacuum pump are provided in the body, the chamber has a first channel and a second channel, the negative pressure switch is connected to the chamber through the first channel, the vacuum pump is connected to the chamber through the second channel, the first channel has a detection port in the chamber, the second channel has an exhaust port in the chamber, and the distance between the detection port and the bottom wall of the chamber is greater than the distance between the exhaust port and the bottom wall of the chamber.
2. A sealing machine according to claim 1, characterized in that: The sealing machine also includes a water collecting box with an open top, the water collecting box is placed in the chamber, and the detection port and the air extraction port are both located at the lower side of the water collecting box.
3. A sealing machine according to claim 2, characterized in that: The water collecting box is provided with a first avoidance groove, and the detection port and the air extraction port are both located in the first avoidance groove.
4. A sealing machine according to claim 2, characterized in that: The water collecting box is provided with a first avoidance groove and a second avoidance groove, the detection port is located in the first avoidance groove, and the air extraction port is located in the second avoidance groove.
5. A sealing machine according to claim 4, characterized in that: The first avoidance groove is arranged on the outer side of the side plate of the water collecting box, and the first avoidance groove extends downward to the bottom plate of the water collecting box, and a gap is formed at the bottom plate of the water collecting box for the first channel to enter the first avoidance groove.
6. A sealing machine according to claim 1, characterized in that: The first channel and the second channel are both located on the bottom wall of the chamber.
7. A sealing machine according to claim 6, characterized in that: The air extraction port does not protrude from the bottom wall of the chamber.
8. A sealing machine according to claim 1, characterized in that: The first channel is located at the side wall of the chamber, and the second channel is located at the bottom wall of the chamber; or, both the first channel and the second channel are located at the side wall of the chamber.
9. A sealing machine according to claim 1, characterized in that: The first channel and the second channel both include a connecting portion and a through hole penetrating the connecting portion, wherein the connecting portion penetrates the wall surface of the chamber and extends to the outside of the chamber so as to communicate the inside of the chamber with the outside of the chamber.
10. A sealing machine according to claim 1, characterized in that: The first channel and the second channel are both integrated with the wall of the chamber.