Vacuum sealer with external extraction opening

Abstract

The utility model relates to a vacuum sealer with an external extraction opening, which comprises a cover body and a seat body which are matched with each other in an opening and closing manner, a sealing component and a sealing ring are arranged between the cover body and the seat body, a vacuumizing cavity is defined by the cover body and the seat body through the sealing ring, and a vacuum pump communicated with the vacuumizing cavity is arranged in the cover body. The vacuum pump further comprises an external extraction opening, the external extraction opening is movably matched with the cover body, an air path switching mechanism is arranged on the cover body corresponding to the movement track of the external extraction opening, and when the external extraction opening moves, the state of the air path switching mechanism is changed, so that the external extraction opening is selectively communicated with an air suction port of the vacuum pump. According to the vacuum sealing machine, the vacuumizing cavity is vacuumized conventionally, other vacuum packaging containers can be vacuumized through the external extraction opening, the state of the gas circuit switching mechanism is switched through the action of the external extraction opening, operation is easy and convenient, the practicability of the vacuum sealing machine can be improved, the application range of the vacuum sealing machine is wider, and the sealing efficiency is improved. And the market competitiveness is improved.

Description

Technical Field

[0001] The utility model relates to the field of vacuum sealing machines, in particular to a vacuum sealing machine with an external air extraction port. Background Art

[0002] The vacuum sealer is a machine that puts food into a sealed bag and then extracts the air in the sealed bag. When the sealed bag reaches a predetermined vacuum degree, the sealing process is completed. The vacuuming is mainly completed by a vacuum chamber and a vacuum device. The bag mouth of the sealed bag is placed in the vacuum chamber, and then the air in the vacuum chamber is extracted by the vacuum device to form a negative pressure, thereby sucking out the air in the sealed bag to form a vacuum state. In the vacuum device in the prior art, its structure mainly includes a vacuum pump and a vacuum pipe. The air outlet end of the vacuum pump is connected to the outside air, and the air inlet end is connected to the vacuum chamber on the sealer through the vacuum pipe. Therefore, the current vacuum sealer can only vacuum the adapted sealed bag, and its function is relatively single and its practicality is poor, which is not conducive to the needs of the increasingly competitive market. Therefore, the applicant provides a new solution to the above technical problems through further improvement and perfection of the structure for consumers to choose and use. Summary of the invention

[0003] The utility model aims to provide a vacuum sealer with an external air extraction port which has a simple and reasonable structure, is easy to install and has a stable structure.

[0004] A vacuum sealing machine with an external air suction port comprises a cover body and a base body that can be opened and closed, a sealing assembly and a sealing ring are arranged between the cover body and the base body, a vacuum chamber is also formed between the cover body and the base body through the sealing ring, and a vacuum pump connected to the vacuum chamber is arranged in the cover body, and the characteristic is that: it also comprises an external air suction port, the external air suction port is movably matched with the cover body, an air path conversion mechanism is arranged on the cover body corresponding to the movement track of the external air suction port, and the state of the air path conversion mechanism is changed when the external air suction port is moved so that the external air suction port is selectively connected to the suction port of the vacuum pump.

[0005] The purpose of the utility model can also be solved by the following technical measures:

[0006] As a more specific solution, the air path conversion mechanism includes a silicone valve seat and a valve needle. The valve seat is provided with a valve needle hole. One side of the valve needle hole is provided with an opening connected to the suction port of the vacuum pump. The outer end of the valve needle is connected to the external exhaust port. The inner end of the valve needle is provided with a bypass port, which is plugged into the valve needle hole. The bypass port is connected or misaligned with the opening by rotating the valve needle, thereby realizing the connection or isolation between the suction port and the external exhaust port.

[0007] As a further solution, the cover body includes a shell, and the gas path conversion mechanism also includes a gas path selection knob rotatably connected to the shell, the valve needle is coaxially connected to the inner end of the gas path selection knob, and the gas path selection knob is provided with an exhaust interface for connecting to the exhaust interface of the vacuumed object, and the external exhaust port is opened on the gas path selection knob along the axis and is connected to the exhaust interface.

[0008] As a further solution, a control switch is also provided in the cover body, and the control switch cooperates with the air path conversion mechanism. When the air path conversion mechanism is connected to the external air suction port and the air suction port of the vacuum pump, the control switch cuts off the working circuit of the sealing component.

[0009] As a further solution, a first interface and a second interface are provided on the shell, the suction port of the vacuum pump is connected with the vacuum chamber through the first interface, the opening is connected with the vacuum chamber through the second interface, and the external suction port is connected with the suction port of the vacuum pump through the air path conversion mechanism and the vacuum chamber in sequence.

[0010] As a further solution, a knob assembly port is provided on the housing; the gas path conversion mechanism further includes a knob connection seat rotatably connected to the knob assembly port, and the gas path selection knob is fastened to the knob connection seat;

[0011] As a further solution, the side of the knob connecting seat is connected to an elastic arm with an arc-shaped structure, and two positioning notches are recessed and arranged at intervals on the elastic arm. Two anti-rotation baffles are extended from the elastic arm and are respectively placed on the outer sides of the positioning notches. A positioning clamping plate is extended from the shell and cooperates with one of the two positioning notches as the knob connecting seat rotates, and the positioning clamping plate is placed between the two anti-rotation baffles.

[0012] As a further solution, two connecting bosses extend from the air path selection knob, and the two connecting bosses are placed on opposite sides of the valve needle; a rectangular groove is stretched inward on the knob connecting seat, and the two connecting bosses and the valve needle are directionally inserted in the rectangular groove, and a through hole is correspondingly provided at the bottom of the rectangular groove. The air path selection knob is assembled and connected to the knob connecting seat by passing the through hole and the connecting boss through the fastening unit.

[0013] As a further solution, the air path selection knob is provided with a stop position one and a stop position two corresponding to the connected state and the isolated state of the external air exhaust port, and the air path selection knob is provided with a isolation mark and a connected mark corresponding to the stop position one and the stop position two, respectively, and the shell is provided with an indicator mark corresponding to the connected mark or the isolation mark.

[0014] As a further solution, the housing includes a bottom shell and an outer shell assembled and connected to the bottom shell, an upper clamping plate and a lower clamping plate extend oppositely between the outer shell and the bottom shell, a knob assembly opening is formed between the upper clamping plate and the lower clamping plate, and a convex ring shaft rotatably connected to the knob assembly opening extends from the knob connecting seat;

[0015] A valve seat mounting seat is extended from the bottom shell, the silicone valve seat is fixed in the valve seat mounting seat, and a pressure column is extended from the outer shell corresponding to the valve seat mounting seat, and the pressure column presses against the silicone valve seat.

[0016] As a further solution, the gas path selection knob is connected to a silicone sealing ring along the outer circumference of the air extraction interface.

[0017] The beneficial effects of the utility model are as follows:

[0018] The vacuum sealer with an external air suction port of the utility model can, in addition to conventionally evacuating the vacuum chamber, also utilize the external air suction port to evacuate other vacuum packaging containers with a one-way exhaust interface, and the state of the air path conversion mechanism is changed by the action of the external air suction port, so that rapid switching between the vacuum chamber and the external air suction port is achieved, and the operation is simple and convenient, which can improve the practicability of the vacuum sealer, expand its application range, and enhance its market competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of an embodiment of a vacuum sealing machine in the utility model.

[0020] Figure 2 It is a schematic diagram of the cross-sectional structure of the vacuum sealing machine in the utility model.

[0021] Figure 3 It is a schematic diagram of the exploded structure of the gas path conversion mechanism in the utility model.

[0022] Figure 4 This is a schematic diagram of the exploded structure of the gas path selection knob in the utility model from another angle.

[0023] Figure 5 The utility model is a structural schematic diagram of the gas path selection knob in the non-rotation position.

[0024] Figure 6 This is a structural schematic diagram of the gas path selection knob in the utility model in the second rotation stop position.

[0025] Figure 7 It is a schematic diagram of the exploded structure of the vacuum sealing machine in the utility model.

[0026] Figure 8 This is a schematic diagram of the exploded structure of the vacuum sealing machine in the utility model from another angle.

[0027] Fig. 9 for Figure 2 Enlarged structural diagram at B in the middle. DETAILED DESCRIPTION

[0028] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0029] like Figures 1 to 9 As shown, a vacuum sealing machine with an external air suction port comprises a cover body 1 and a base body 2 that can be opened and closed, a sealing assembly 3 and a sealing ring 4 are arranged between the cover body 1 and the base body 2, a vacuum chamber A is also formed between the cover body 1 and the base body 2 through the sealing ring 4, and a vacuum pump 5 connected to the vacuum chamber A is arranged in the cover body 1, and an external air suction port 6 is also included, the external air suction port 6 is movably matched with the cover body 1, and an air path conversion mechanism 7 is arranged on the cover body 1 corresponding to the movement trajectory of the external air suction port 6, and when the external air suction port 6 is moved, the state of the air path conversion mechanism 7 is changed so that the external air suction port 6 is selectively connected to the suction port 51 of the vacuum pump 5.

[0030] In addition to conventionally evacuating the vacuum chamber A, this vacuum sealer can also utilize the external vacuum port 6 to evacuate other vacuum packaging containers with a one-way exhaust interface, and the state of the gas path conversion mechanism is changed by the action of the external vacuum port 6, so as to quickly switch between the vacuum chamber A and the external vacuum port 6.

[0031] The gas path conversion mechanism 7 includes a silicone valve seat 71 and a valve needle 72. The valve seat 71 is provided with a valve needle plug hole 711. One side of the valve needle plug hole 711 is provided with an opening 712 connected to the suction port 51 of the vacuum pump 5. The outer end of the valve needle 72 is connected to the external exhaust port 6. The inner end of the valve needle 72 is provided with a bypass port 721, which is plugged and matched with the valve needle plug hole 711. The bypass port 721 is connected or misaligned with the opening 712 by rotating the valve needle 72, so as to realize the connection or isolation between the suction port 51 and the external exhaust port 6.

[0032] This structure realizes the connection or isolation between the suction port 51 and the external air exhaust port 6 by simple mechanical rotation of the valve needle 72. In more embodiments, the air path conversion mechanism 7 can also be a reversing valve connecting the vacuum chamber A and the external air exhaust port 6. The reversing valve is electrically connected to the air path selection switch. The air path selection switch is triggered by a starting structure such as a button, rotation, or mechanical structure, so that the reversing valve electronically switches the internal air path, so that the suction port 51 of the vacuum pump 5 can be connected to the external air exhaust port 6 or the vacuum chamber A.

[0033] In addition, a positioning needle 713 extends into the valve needle insertion hole 711 , and the inner end of the valve needle 72 is inserted into the positioning needle 713 . The positioning needle 713 can ensure that the valve needle 72 can rotate coaxially, thus playing a supporting role.

[0034] The cover body 1 includes a shell 10, and the gas path conversion mechanism 7 also includes an gas path selection knob 73 rotatably connected to the shell 10, the valve needle 72 is coaxially connected to the inner end of the gas path selection knob 73, and the gas path selection knob 73 is provided with a suction interface 731 for connecting to the exhaust interface of the vacuumed object, and the external suction port 6 is opened on the gas path selection knob 73 along the axis and is connected to the suction interface 731; this structure can drive the valve needle 72 to rotate through the gas path selection knob 73 to achieve switching between connection and isolation, and also has an interface function, and when external suction is performed, it is connected to the exhaust interface of other vacuumed objects.

[0035] A control switch 8 is also provided in the cover body 1, and the control switch 8 cooperates with the dynamic contact of the air circuit conversion mechanism 7. When the air circuit conversion mechanism 7 is connected to the external air suction port 6 and the suction port 51 of the vacuum pump 5, the control switch 8 cuts off the working circuit of the sealing component 3; the control switch 8 can be a mechanical micro switch, and a dynamic contact is provided on the valve needle 72 or the air circuit selection knob 73. When the valve needle 72 or the air circuit selection knob 73 is rotated to the connection position of the external air suction port 6, the dynamic contact touches the switch key of the micro switch, so that the heating and sealing operation cannot be performed during external air suction.

[0036] In other embodiments, the external air extraction port 6 can be directly connected to the air suction port 51 of the vacuum pump 5 through a pipeline after passing through the air path conversion mechanism 7, but in this embodiment, the following serial connection is adopted:

[0037] The shell 10 is provided with a first interface 102 and a second interface 103, the suction port 51 of the vacuum pump 5 is connected with the vacuum chamber A through the first interface 102, the opening 712 is connected with the vacuum chamber A through the second interface 103, and the external suction port 6 is connected with the suction port 51 of the vacuum pump 5 through the gas path conversion mechanism 7 and the vacuum chamber A in sequence; this connection method can reduce the number of accessories inside the cover body 1, occupy less space, make the cover body more compact, avoid the complicated layout of accessories, and have fewer suction pipes to connect during assembly, thereby improving assembly efficiency.

[0038] The housing 10 is provided with a knob assembly port 101; the gas path conversion mechanism 7 further includes a knob connection seat 74 rotatably connected to the knob assembly port 101, the gas path selection knob 73 is fastened to the knob connection seat 74;

[0039] The side of the knob connecting seat 74 is connected to an arc-shaped elastic arm 741, and two positioning notches 742 are recessed on the elastic arm 741 at intervals. Two anti-rotation baffles 743 are extended from the elastic arm 741 and are respectively placed on the outer sides of the positioning notches 742. A positioning clamping plate 106 is extended from the shell 10 and is selectively matched with the two positioning notches 741 as the knob connecting seat 74 rotates. The positioning clamping plate 106 is placed between the two anti-rotation baffles 743.

[0040] In addition, a switch pressing plate 745 is extended from the inner side of the knob connecting seat 74 . The switch pressing plate 745 cooperates with the switch key of the control switch 8 (preferably a micro switch) when the knob connecting seat 74 rotates.

[0041] Two connecting bosses 732 extend from the gas path selection knob 73, and the two connecting bosses 732 are placed on the opposite sides of the valve needle 72; a rectangular groove 746 is stretched inwardly on the knob connecting seat 74, and the two connecting bosses 732 and the valve needle 72 are directionally inserted into the rectangular groove 746, and a through hole 747 is correspondingly provided at the bottom of the rectangular groove 746. The gas path selection knob 73 is assembled and connected to the knob connecting seat 74 by passing the through hole 747 and the connecting boss 732 through the fastening unit.

[0042] The gas path selection knob 73 is provided with a first stop position and a second stop position corresponding to the connection state and the isolation state of the external air extraction port 6. The gas path selection knob 73 is provided with an isolation mark 738 and a connection mark 739 corresponding to the first stop position and the second stop position, respectively. The shell 10 is provided with an indicator mark 14 corresponding to the connection mark 739 or the partition mark 738. In the present embodiment, the isolation mark 738 may be a similar word such as "sealed", the connection mark 739 may be a similar word such as "external extraction", and the indicator mark 14 may be a simple pattern with a "- " structure.

[0043] The operating principle of the valve needle 72 and the gas path selection knob 73:

[0044] First, if Figure 5 As shown, in the isolated state, the air path selection knob 73 is in the second anti-rotation position, and the corresponding positioning clamping plate 106 is clamped in one of the positioning notches 742 on the knob connecting seat 74. At this time, the anti-rotation baffle 743 corresponding to the positioning notch restricts the knob connecting seat 74 from continuing to rotate toward one side thereof; correspondingly, the bypass port 721 of the valve needle 72 is misaligned with the opening 712 of the silicone valve seat 71, and the external air suction port 6 is isolated from the air suction port 51 of the vacuum pump 5. At this time, the vacuum sealing machine only performs vacuuming and sealing operations on the sealing bag.

[0045] When the isolation state is switched to the connection state, the user rotates the gas path selection knob 73, and the gas path selection knob 73 drives the knob connection seat 74 to rotate synchronously. In this process, the positioning card plate 106 presses against the elastic arm 741, compressing and deforming the elastic arm 741, and at the same time plays a damping role until the gas path selection knob 73 is in the rotation stop position 1, and the corresponding positioning card plate 106 is clamped in another positioning notch 742 of the knob connection seat 74. Figure 6 As shown, the anti-rotation baffle 743 corresponding to the positioning notch 742 restricts the knob connecting seat 74 from continuing to rotate as shown in FIG. Figure 5 As shown, correspondingly, the bypass port 721 of the valve needle 72 is opposite to the opening 712 of the silicone valve seat 71, and the external vacuum port 6 is connected to the suction port 51 of the vacuum pump 5. At this time, the vacuum sealing machine can vacuum other vacuumed objects through the external vacuum port 6.

[0046] The housing 10 includes a bottom shell 11 and an outer shell 12 assembled and connected to the bottom shell, an upper clamping plate 121 and a lower clamping plate 111 extend oppositely between the outer shell 12 and the bottom shell 11, a knob assembly opening 101 is formed between the upper clamping plate 121 and the lower clamping plate 111, and a convex ring shaft 744 extends from the knob connection seat 74 and is rotatably connected to the knob assembly opening 101;

[0047] Since the valve seat 71 is made of silicone material, the cooperation between the valve seat 71 and the valve needle 72 alone may easily cause pressure to cause the valve seat 71 to deform, resulting in air leakage between the valve needle 72 and the opening 712. Therefore, the knob assembly port 101 can not only act as a bearing, but also support the air path selection knob 73. The cooperation between the knob assembly port 101 and the convex ring shaft 744 can ensure that the air path selection knob 73 is coaxially connected to the knob assembly port 101, thereby reducing the stress of the valve needle 72 applied to the valve seat 71.

[0048] A valve seat mounting seat 112 extends from the bottom shell 11, and the silicone valve seat 71 is fixed in the valve seat mounting seat 112. A pressure column 122 extends from the outer shell 12 corresponding to the valve seat mounting seat 112, and the pressure column 122 presses against the silicone valve seat 71. During installation, the silicone valve seat 71 has been fixed in the valve seat mounting seat 112 by interference fit, and the pressure column 122 prevents the silicone valve seat 71 from shifting upward, thereby better fixing the silicone valve seat 71.

[0049] The gas path selection knob 73 is connected with a silicone sealing ring 9 along the outer peripheral edge of the air suction interface 731; in normal use, when the external air suction port 6 needs to evacuate other vacuumed objects, the air suction interface 731 can be sealed and docked at an exhaust interface similar to a bottle mouth to perform vacuuming work. However, when the exhaust interface has a small diameter and a short length and fails to form a sealing fit with the exhaust interface, the air suction interface 731 can be pressed against the vacuumed object so that the silicone sealing ring 9 surrounds the outer periphery of the exhaust interface, so that a sealed cavity is formed between the air suction interface 731 and the vacuumed object, thereby realizing a vacuumed environment.

[0050] A lower groove 201 is formed on the joint surface of the seat body 2, and a lower sealing groove 202 is formed on the joint surface along the outer circumference of the lower groove 201. An upper sealing groove 104 is formed on the joint surface of the cover body 1 corresponding to the lower sealing groove 202. A sealing ring 4 is provided in the upper sealing groove 104 and the lower sealing groove 202. The two sealing rings 4 abut against each other to form a vacuum chamber A between the lower groove 201 and the cover body 1.

[0051] The sealing component 3 includes a long strip heating module 31 and a pressure contact strip 32, and the long strip heating module 31 and the pressure contact strip 32 are movably in contact with each other and are placed in the vacuum chamber A. The strip heating module is connected to the cover body 1, and the pressure contact strip 32 is connected to the base body 2. In this embodiment, the long strip heating module 31 and the pressure contact strip 32 are built into the vacuum chamber A, and the sealing work is completed immediately after vacuuming. The control switch 8 mainly controls the on and off of the working circuit of the long strip heating module 31.

[0052] The above is a preferred embodiment of the utility model, which shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. The utility model may have various changes and improvements without departing from the spirit and scope of the utility model, and these changes and improvements fall within the scope of the utility model to be protected, and the scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A vacuum sealing machine with an external air extraction port, comprising a cover body (1) and a base body (2) that can be opened and closed, a sealing assembly (3) and a sealing ring (4) being arranged between the cover body (1) and the base body (2), a vacuum chamber (A) being enclosed between the cover body (1) and the base body (2) through the sealing ring (4), and a vacuum pump (5) being arranged in the cover body (1) and communicating with the vacuum chamber (A), characterized in that The invention also comprises an external air suction port (6), the external air suction port (6) being movably matched with the cover body (1), and an air path conversion mechanism (7) being provided on the cover body (1) corresponding to the movement track of the external air suction port (6), and the state of the air path conversion mechanism (7) is changed when the external air suction port (6) is moved so that the external air suction port (6) is selectively connected with the air suction port (51) of the vacuum pump (5).

2. The vacuum sealer with an external air extraction port according to claim 1, characterized in that: The gas path conversion mechanism (7) comprises a silicone valve seat (71) and a valve needle (72); the valve seat (71) is provided with a valve needle plug hole (711); one side of the valve needle plug hole (711) is provided with an opening (712) which is connected to the suction port (51) of the vacuum pump (5); the outer end of the valve needle (72) is connected to the external exhaust port (6); the inner end of the valve needle (72) is provided with a bypass port (721) which is plugged into and matched with the valve needle plug hole (711); the bypass port (721) is connected to or dislocated with the opening (712) by rotating the valve needle (72), thereby achieving connection or disconnection between the suction port (51) and the external exhaust port (6).

3. The vacuum sealer with an external air extraction port according to claim 2, characterized in that: The cover body (1) comprises a housing (10), the gas path conversion mechanism (7) further comprises a gas path selection knob (73) rotatably connected to the housing (10), the valve needle (72) is coaxially connected to the inner end of the gas path selection knob (73), a gas extraction interface (731) for connecting to an exhaust interface of a vacuumed object is provided in the gas path selection knob (73), and the external gas extraction port (6) is arranged on the gas path selection knob (73) along the axis and is in communication with the gas extraction interface (731).

4. The vacuum sealer with an external air extraction port according to claim 1, characterized in that: A control switch (8) is also provided in the cover body (1), and the control switch (8) is in dynamic contact with the gas path conversion mechanism (7). When the gas path conversion mechanism (7) is connected to the external air extraction port (6) and the air suction port (51) of the vacuum pump (5), the control switch (8) cuts off the working circuit of the sealing component (3).

5. The vacuum sealer with an external air extraction port according to claim 3, characterized in that: The housing (10) is provided with a first interface (102) and a second interface (103); the suction port (51) of the vacuum pump (5) is connected to the vacuum chamber (A) via the first interface (102); the opening (712) is connected to the vacuum chamber (A) via the second interface (103); and the external suction port (6) is connected to the suction port (51) of the vacuum pump (5) via the gas path conversion mechanism (7) and the vacuum chamber (A) in sequence.

6. The vacuum sealer with an external air extraction port according to claim 3 or 5, characterized in that: The housing (10) is provided with a knob assembly opening (101); the gas path conversion mechanism (7) further comprises a knob connection seat (74) rotatably connected to the knob assembly opening (101), and the gas path selection knob (73) is fastened to the knob connection seat (74); The side of the knob connection seat (74) is connected to an elastic arm (741) of an arc structure, and two positioning notches (742) are recessed and arranged at intervals on the elastic arm (741). Two anti-rotation baffles (743) are also extended from the elastic arm (741) and are respectively arranged on the outer sides of the positioning notches (742). A positioning clamping plate (106) is extended from the housing (10) and is selectively matched with one of the two positioning notches (742) as the knob connection seat (74) rotates, and the positioning clamping plate (106) is arranged between the two anti-rotation baffles (743).

7. The vacuum sealer with an external air extraction port according to claim 6, characterized in that: Two connecting bosses (732) extend from the gas path selection knob (73), and the two connecting bosses (732) are placed on opposite sides of the valve needle (72); a rectangular groove (746) is stretched inwardly on the knob connection seat (74), and the two connecting bosses (732) and the valve needle (72) are directionally inserted into the rectangular groove (746), and a through hole (747) is correspondingly provided at the bottom of the rectangular groove (746), and the gas path selection knob (73) is assembled and connected to the knob connection seat (74) by passing the through hole (747) and the connecting boss (732) through the fastening unit.

8. The vacuum sealer with an external air extraction port according to claim 6, characterized in that: The gas path selection knob (73) is provided with a first stop position and a second stop position corresponding to the connection state and the isolation state of the external air exhaust port (6); a isolation mark (738) and a connection mark (739) are provided on the gas path selection knob (73) corresponding to the first stop position and the second stop position, respectively; and an indication mark (14) corresponding to the connection mark (739) or the isolation mark (738) is provided on the housing (10).

9. The vacuum sealer with an external air extraction port according to claim 6, characterized in that: The housing (10) comprises a bottom shell (11) and an outer shell (12) assembled and connected to the bottom shell, an upper clamping plate (121) and a lower clamping plate (111) extending in opposite directions between the outer shell (12) and the bottom shell (11), a knob assembly opening (101) being formed between the upper clamping plate (121) and the lower clamping plate (111), and a convex ring shaft (744) rotatably connected to the knob assembly opening (101) extending from the knob connection seat (74); A valve seat mounting seat (112) extends from the bottom shell (11), the silicone valve seat (71) is fixed in the valve seat mounting seat (112), and a pressure column (122) extends from the outer shell (12) corresponding to the valve seat mounting seat (112), the pressure column (122) presses against the silicone valve seat (71).

10. The vacuum sealer with an external air evacuation port according to claim 3, characterized in that The gas path selection knob (73) is connected to a silicone sealing ring (9) along the outer periphery of the gas extraction interface (731).

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