CN217565674U - Pressure relief device, pot cover and pot - Google Patents

Abstract

The utility model relates to a pressure relief device, pot cover and pan, pressure relief device is fixed with the connecting hole cooperation on the pot cover, include: the mounting seat is fixed in a mounting hole of the pot cover in a matching manner and is positioned outside the pot cover, an upper cavity and a lower cavity which are hollow and communicated are arranged in the mounting seat, and an exhaust port is arranged on the side wall of the lower cavity in a penetrating manner; the pressure relief assembly is fixed in the upper cavity and comprises a button capable of being pressed to move downwards; the exhaust assembly is fixed in the lower cavity and comprises an exhaust valve and an exhaust valve seat, the upper end face of the exhaust valve seat is provided with a pressure relief opening, and the exhaust valve is movably arranged in the exhaust valve seat and is provided with an elastic sealing part covering the pressure relief opening; when exhausting, the exhaust valve is jacked up and leaves the pressure relief opening, and the air in the pot is exhausted from the pressure relief opening and the exhaust opening; during pressure relief, the button is pressed to move downwards and abuts against the sealing part of the extrusion exhaust valve, so that the edge of the button is tilted to leave the pressure relief opening, and outside air enters the pot from the exhaust opening and the pressure relief opening. The pressure relief device adopts a push button type to relieve pressure, and is compact and reasonable.

Description

Pressure relief device, pot cover and pot

Technical Field

The utility model relates to a minute-pressure pot field especially relates to a pressure relief device, pot lid and pan.

Background

The micro-pressure cooker is a cooking pot which is popular in recent years, when the micro-pressure cooker works, a certain pressure can be kept in the cooker, cooked food is more delicious than common pots, and because the internal pressure of the micro-pressure cooker is far lower than that of a high-pressure cooker, the strength and the structural requirements are lower than those of the high-pressure cooker.

The existing micro-pressure cooker adopts a switch design with a pressing structure to solve the problem that the negative pressure in the cooker can not smoothly open the cooker cover, but the valve core is deviated by pushing the push button, so that the valve core and the push button are both required to be installed loosely, the structure is not compact and reasonable enough, and the comfort is poor when the micro-pressure cooker is used.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pressure relief device, pressure relief device has characteristics such as compact structure, use comfortable convenience, has better suitability.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a pressure relief device, with the connecting hole cooperation on the pot cover fixed, includes: the mounting seat is matched and fixed in the mounting hole of the pot cover, is positioned outside the pot cover, is internally provided with a hollow and communicated upper cavity and a lower cavity, and the side wall of the lower cavity is provided with an exhaust port in a penetrating way; the pressure relief assembly is fixed in the upper cavity and comprises a button capable of being pressed to move downwards; the exhaust assembly is fixed in the lower cavity and comprises an exhaust valve and an exhaust valve seat, the upper end face of the exhaust valve seat is provided with a pressure relief opening, the exhaust valve is movably arranged in the exhaust valve seat and is provided with an elastic sealing part covering the pressure relief opening;

when exhausting, the exhaust valve is jacked up and leaves the pressure relief opening, and the air in the cooker is exhausted from the pressure relief opening and the exhaust opening;

during pressure relief, the button is pressed down and the butt extrusion the sealing part of discharge valve makes its border perk leave the pressure release mouth, external gas gets into in the pot from gas vent, pressure release mouth.

According to the pressure relief device provided by the technical scheme, the mounting seat is arranged on the outer side of the cooker cover, the button is movably arranged in the mounting seat, one end of the exhaust valve seat penetrates through the connecting hole from the inner side of the cooker cover to be fixed with the mounting seat, and the cooker cover, the exhaust valve seat and the mounting seat are fixed; the exhaust valve seat is provided with a pressure relief opening, the mounting seat is provided with an exhaust opening, and when the pressure relief device does not work, the exhaust valve cover is arranged on the pressure relief opening, and the pressure relief opening is not communicated with the exhaust opening. When exhausting, the exhaust valve is jacked up and leaves the pressure relief opening, and the air in the pot is exhausted from the pressure relief opening and the exhaust opening; during the pressure release, the button is pressed down and the butt extrusion the sealing part of discharge valve makes its border perk leave the pressure release mouth, external gas gets into in the pot from gas vent, pressure release mouth, can the inside and outside atmospheric pressure of equilibrium pot. The pressure relief device adopts a button type pressure relief mode, is compact and reasonable, and is simple and comfortable to operate.

Preferably, a partition plate is arranged in the mounting seat, a first through hole is formed in the partition plate, and the partition plate divides the space in the mounting seat into an upper cavity and a lower cavity which are communicated with each other; the baffle divides the inside middle of mount pad into upper chamber and lower chamber, and exhaust subassembly and lower chamber cooperation prevent that the interior gas of pot from flowing to in the upper chamber.

Preferably, the button comprises a pressing part and a pressing part, one end of the pressing part is fixed with the pressing part, the other end of the pressing part penetrates through the first through hole, and a gap is formed between the pressing part and the sealing part of the exhaust valve; the pressing part is convenient for a user to press, and the extruding part can extrude the exhaust valve and force the edge of the exhaust valve to tilt.

Preferably, the pressure relief assembly further comprises a button seat, and the button is movably arranged in the button seat; the button seat is provided with a second through hole for the extrusion part to pass through, and the second through hole is aligned with the first through hole; the button seat is fixedly arranged in the upper chamber, and the button seat are arranged in a matched mode, so that a user can press the button conveniently.

Preferably, the pressure relief assembly further comprises an elastic piece, a mounting column is further arranged in the button seat, one end of the elastic piece is sleeved on the mounting column, and the other end of the elastic piece is abutted to the pressing portion; after the user presses the button, the elastic piece can make the button reset by means of the elasticity of the elastic piece.

Preferably, a buckle is arranged on the pressing part, a clamping groove is formed in the side wall of the button seat, and the buckle is arranged in the clamping groove in a sliding manner and can be clamped with the upper end face of the clamping groove; the side butt that goes up of buckle and draw-in groove limits the distance that shifts up of button, prevents that the button from deviating from in the button seat.

Preferably, the side wall of the exhaust valve is provided with an exhaust hole in a penetrating way; when exhausting, the exhaust valve is jacked up and leaves the pressure relief opening, and the air in the pot is exhausted from the exhaust hole, the pressure relief opening and the exhaust opening; the air in the boiler can be discharged from the pressure relief port and also can be discharged from the exhaust hole, so that the efficiency is improved.

Preferably, the exhaust valve seat comprises a top plate, a connecting plate and a second step which are integrally formed, and the pressure relief opening is formed in the top plate; the connecting plate is fixed with the lower chamber, and the second step is abutted against the inner side surface of the pot cover; the connecting plate and the top plate can be inserted into the lower cavity through the connecting holes, and the second step is abutted against the inner side face of the cooker cover, so that the exhaust valve seat, the mounting seat and the cooker cover are fixed.

The pot cover comprises a handle, a mounting hole and the pressure relief device, wherein the pressure relief device is mounted in the mounting hole, and the handle and a mounting seat of the pressure relief device are fixedly arranged.

A cooker comprises a cooker body and a cooker cover, wherein the cooker cover is matched with the cooker body.

Drawings

Fig. 1 is an exploded sectional view of the mounting seat, the pressure relief assembly, the exhaust assembly, the pot cover, the handle and the decoration provided by the embodiment of the present invention.

Fig. 2 is a sectional view of the mounting seat and the handle provided by the embodiment of the present invention.

Fig. 3 is a schematic view of an exhaust valve seat according to an embodiment of the present invention.

Fig. 4 is a cross-sectional view of an exhaust valve according to an embodiment of the present invention.

Fig. 5 is a sectional view of a button seat according to an embodiment of the present invention.

Fig. 6 is a cross-sectional view of a button according to an embodiment of the present invention.

Fig. 7 is a sectional view of the low pressure cooker provided by the embodiment of the present invention.

Fig. 8 is an exhaust schematic diagram of the mounting seat, the pressure relief assembly, and the exhaust assembly provided in the embodiment of the present invention.

Fig. 9 is an air inlet schematic view of the mounting seat, the pressure relief assembly and the exhaust assembly provided by the embodiment of the present invention.

1. A mounting seat; 11. an exhaust port; 12. a partition plate; 13. a first through hole; 14. an upper chamber; 15. a lower chamber; 2. a pressure relief assembly; 21. a button; 211. a pressing part; 212. a pressing section; 213. buckling; 22. a button seat; 221. a second through hole; 222. mounting a column; 223. a card slot; 224. a projection; 23. an elastic member; 3. an exhaust assembly; 31. an exhaust valve; 311. a sealing part; 312. a movable portion; 313. a first step; 314. an exhaust hole; 32. an exhaust valve seat; 321. mounting holes; 322. a pressure relief port; 323. a top plate; 324. a connecting plate; 325. a second step; 33. a seal ring; 4. a pot cover; 5. a handle; 6. a pan body; 7. and (7) a decorative piece.

Detailed Description

The present invention will now be described in more detail with reference to the accompanying drawings, and it is to be understood that the following description of the present invention is made only by way of illustration and not by way of limitation with reference to the accompanying drawings. The various embodiments may be combined with each other to form other embodiments not shown in the following description.

The side of the pot cover close to the pot body is called the inner side, and the side of the pot cover far away from the pot body is called the outer side.

Referring to fig. 1, an embodiment of the present invention provides a pressure relief device, including a mounting base 1, a pressure relief assembly 2, and an exhaust assembly 3. The pressure relief assembly 2 comprises a button 21, a button seat 22 and an elastic piece 23, and the exhaust assembly 3 comprises an exhaust valve 31, an exhaust valve seat 32 and a sealing ring 33.

It is worth noting that the mounting seat 1 and the pressure relief assembly 2 are positioned on the outer side of the cooker lid 4, and part of the exhaust assembly 3 penetrates through the connecting hole of the cooker lid 4 from the inner side to the outer side to be detachably fixed with the mounting seat 1.

Referring to fig. 2, the mounting base 1 includes an exhaust port 11, a partition plate 12, a first through hole 13, an upper chamber 14, and a lower chamber 15.

Specifically, the mounting base 1 is hollow, and the partition plate 12 is disposed in the mounting base 1 and divides a space in the mounting base 1 into an upper chamber 14 and a lower chamber 15. The partition plate 12 is provided with a first through hole 13, and the upper chamber 14 and the lower chamber 15 are communicated through the first through hole 13.

The inner side of the lower chamber 15 is provided with an internal thread. The side wall of the lower chamber 15 is provided with an exhaust port 11, and the lower chamber 15 and the external space are communicated through the exhaust port 11.

Referring to fig. 3, the exhaust valve seat 32 includes a mounting hole 321, a pressure relief hole 322, a top plate 323, a connecting plate 324, and a second step 325.

Specifically, the connecting plate 324 is cylindrical, has two open ends and is hollow, and the space inside the connecting plate 324 is communicated with the space inside the pot body 6 through the opening at the lower side.

The top plate 323 is integrally formed with the upper end of the connecting plate 324. The shape of the connecting plate 324 is adapted to the shape of the connecting hole of the pot cover 4, and the outer side surface of the connecting plate 324 is provided with external threads.

The second step 325 is integrally formed on the outer side surface of the lower end of the connecting plate 324, and the size of the second step 325 needs to be larger than the diameter of the connecting hole of the pot cover 4.

The top plate 323 and the connecting plate 324 can extend into the lower chamber 15 through the connecting hole of the lid 4, and can be detachably connected with the lower chamber 15 through rotation. At this time, the second step 325 abuts against the inner side surface of the lid 4, and the lower side surface of the mounting base 1 abuts against the outer side surface of the lid 4, so that the mounting base 1, the exhaust valve base 32 and the lid 4 are fixed.

It should be noted that when the mounting seat 1, the exhaust valve seat 32 and the lid 4 are completely fixed, the top plate 323 is spaced from the partition plate 12.

In order to increase the installation air tightness, a sealing ring 33 is sleeved outside the connecting plate 324. After the mounting seat 1, the exhaust valve seat 32 and the cooker cover 4 are fixed, the sealing ring 33 is tightly pressed between the second step 325 and the inner side surface of the cooker cover 4, so that the gas in the cooker body 6 is prevented from escaping from the joint of the exhaust valve seat 32 and the cooker cover 4 when the micropressure cooker is used, and the sealing performance of the micropressure cooker is ensured.

Preferably, the top plate 323 is provided with one or more mounting holes 321 and one or more pressure relief holes 322 spaced apart from each other. The pressure relief port 322 may be provided to communicate with the mounting hole 321, or may be provided to be spaced apart from the mounting hole 321.

Referring to fig. 4, the discharge valve 31 includes an elastic sealing portion 311, a movable portion 312, a first step 313, and a discharge hole 314.

Specifically, the exhaust valve 31 is a flexible valve, has elasticity, and can be automatically restored after being deformed.

The elastic sealing part 311 and the first step 313 are both larger than the movable part 312, the sealing part 311 is integrally formed at the upper end of the movable part 312, and the first step 313 is integrally formed on the outer side surface of the lower end of the movable part 312.

When mounting, the lower ends of the first step 313 and the movable portion 312 are inserted into the mounting hole 321 from top to bottom, so that the first step 313 and the partial movable portion 312 are positioned inside the exhaust valve seat 32, and the partial movable portion 312 and the sealing portion 311 are positioned above the exhaust valve seat 32.

The shape of the movable portion 312 is adapted to the shape of the mounting hole 321, that is, the movable portion 312 can reciprocate along the axial direction of the mounting hole 321. When the movable portion 312 moves upward, the first step 313 abuts against the inner surface of the top plate 323, and prevents the exhaust valve 31 from coming out of the mounting hole 321. When the movable portion 312 moves downward, the sealing portion 311 covers the upper surface of the top plate 323. When the micro-pressure cooker is not used, the sealing part 311 is covered on the top plate 323 under the action of gravity, and at this time, a preset distance is reserved between the sealing part 311 and the partition plate 12. It is to be noted that the sealing portion 311 needs to completely cover all the pressure relief ports 322 and the mounting holes 321.

Preferably, the movable part 312 is hollow inside and has an opening at the lower end, and the space inside the pot 6 is communicated with the inner space of the movable part 312 through the opening.

An exhaust hole 314 is formed on a side surface of the movable portion 312. When the micro-pressure cooker is not used, the exhaust holes 314 are all located at the lower side of the top plate 323, when the micro-pressure cooker is used, the gas in the cooker body 6 is heated and expanded, the gas pressure is increased, the exhaust valve 31 is promoted to move upwards along the mounting hole 321, the exhaust holes 314 move upwards along with the mounting hole 321, and the exhaust holes 314 after moving upwards can be located at the upper side of the top plate 323, namely, the internal space of the movable part 312 is communicated with the lower chamber 15 through the exhaust holes 314. When the sealing portion 311 moves upward, the pressure relief port 322 is exposed, and the space inside the pot body 6 and the lower chamber 15 communicate with each other through the pressure relief port 322.

In summary, referring to fig. 8, when the micro-pressure cooker is not used, the sealing portion 311 is covered on the top plate 323 due to gravity. When the micro-pressure cooker is used, the gas in the cooker body 6 is heated and expanded, the air pressure is increased, the exhaust valve 31 is enabled to move upwards along the mounting hole 321, the space in the cooker body 6 is communicated with the lower chamber 15 through the pressure relief hole 322 and the exhaust hole 314, the exhaust hole 11 is arranged on the lower chamber 15, and the lower chamber 15 is communicated with the outside through the exhaust hole 11, so that the gas in the cooker body 6 can move into the lower chamber 15 through the pressure relief hole 322 and the exhaust hole 314 and then is exhausted to the outside through the exhaust hole 11.

Referring to fig. 5, the button seat 22 includes a second through hole 221, a mounting post 222, a locking groove 223, and a protrusion 224.

Specifically, the button seat 22 is hollow inside, and has an opening on the upper side. The button holder 22 has a second through hole 221 formed in a lower side thereof, and the button holder 22 is fixedly disposed in the upper chamber 14 such that the second through hole 221 is aligned with the first through hole 13.

Preferably, the lower side surface of the button holder 22 is downwardly protruded to form a projection 224, and the second through hole 221 is located in the projection 224. When the button holder 22 is fixedly disposed in the upper chamber 14, the protrusion 224 is inserted into the first through hole 13, so that the second through hole 221 and the first through hole 13 are aligned without deviation. In addition, the projection 224 also facilitates positioning of the button holder 22 when mounted, and can enhance stability of the button holder 22 when mounted.

Referring to fig. 6, the button 21 includes a pressing portion 211, a pressing portion 212, and a latch 213.

Specifically, the pressing portion 212 is cylindrical, and the diameter thereof is adapted to the diameter of the second through hole 221, that is, the pressing portion 212 can reciprocate up and down in the second through hole 221. It should be noted that the pressing portion 212 is located on the upper side of the sealing portion 311, and has a predetermined distance with the sealing portion 311.

The pressing portion 211 is integrally formed at the upper end of the pressing portion 212, and the size of the pressing portion 211 is larger than the diameter of the second through hole 221, so that the pressing portion 211 is prevented from entering the second through hole 221.

Preferably, a slot 223 is formed on an inner side surface of the button seat 22, a buckle 213 is convexly formed on a periphery of the pressing portion 211, the buckle 213 is located in the slot 223, when the button 21 moves downwards, the buckle 213 moves downwards in the slot 223, when the button 21 moves upwards, the buckle 213 moves upwards in the slot 223 until the buckle 213 is in clamping connection with an upper end surface of the slot 223, and at this time, the button 21 cannot move upwards continuously.

Preferably, the button seat 22 has a mounting post 222 on a lower side surface thereof, the elastic member 23 is preferably a spring, a lower end of the spring is sleeved on the mounting post 222, and an upper end of the spring abuts against the pressing portion 211. When the user presses the button 21, the pressing portion 211 compresses the spring, and after the user releases his hand, the compressed spring moves the button 21 upward by its own elasticity until the latch 213 is latched with the upper end surface of the latch groove 223.

In summary, referring to fig. 9, after the micro-pressure cooker is used, because a part of gas in the cooker body 6 escapes, the pressure in the cooker body 6 is unbalanced with the external air pressure, and at this time, when a user presses the button 21, the pressing portion 211 and the pressing portion 212 both move downward, the pressing portion 212 presses against the middle portion of the elastic sealing portion 311 and then moves downward, because the size of the elastic sealing portion 311 is much larger than that of the mounting hole 321, the elastic sealing portion 311 does not enter the mounting hole 321, but because the pressing portion 212 presses the elastic sealing portion 311, the edge of the elastic sealing portion 311 tilts upward, and the pressure relief hole 322 is exposed. At this time, the external air can enter the lower chamber 15 through the exhaust port 11 and then enter the pot body 6 through the pressure relief port 322.

Referring to fig. 7, an embodiment of the present invention provides a micro-pressure cooker, including: pressure relief device, pot lid 4, handle 5, pot body 6, decoration 7.

Wherein, the periphery of the pot cover 4 is provided with a sealing element, and when the pot cover 4 is covered on the pot body 6, the sealing butt joint of the pot cover and the pot body is realized through the sealing element.

The mounting seat 1 and the pressure relief component 2 are both positioned on the outer side of the cooker cover 4. The cooker cover 4 is provided with a connecting hole, and part of the exhaust component 3 penetrates through the connecting hole from the inner side of the cooker cover 4 and is detachably fixed with the mounting base 1, so that the mounting base 1, the exhaust component 3 and the cooker cover 4 are fixedly connected.

The handle 5 and the mounting base 1 can be integrally formed, so that the pot cover 4 can be lifted by holding the handle 5 by hand, and the pot cover 4 and the pot body 6 can be separated.

The decoration 7 can be arranged on the upper side of the pressure relief device to play a role of decoration and beautification, and the decoration 7 can be provided with a through hole without influencing a user to press the button 21.

In summary, when the micro-pressure pot is used, the gas in the pot body 6 expands after being heated, the gas pressure increases, the exhaust valve 31 can be pushed upwards to expose the pressure relief opening 322, and the gas in the pot body 6 is exhausted to the outside through the pressure relief opening 322, the exhaust hole 314 and the exhaust port 11, so that the exhaust is automatically realized. When the micro-pressure cooker is used, negative pressure occurs in the cooker body 6, the user only needs to press the button 21 at the moment, the extrusion part 212 extrudes the elastic sealing part 311, the edge of the elastic sealing part 311 upwarps upwards, the pressure relief opening 322 is exposed, at the moment, external gas can enter the cooker body 6 through the exhaust port 11 and the pressure relief opening 322, the air pressure is balanced, and the cooker cover 4 is convenient to open by the user. After the air pressure is balanced, the button 21 is released, the button 21 is reset under the action of the elastic piece 23, the sealing part 311 is reset by the elasticity of the sealing part, and the sealing part covers the pressure relief opening 322. The pressure relief device has the advantages of compact and reasonable integral structure, simple and convenient use, capability of constructing a good micro-pressure environment and better practicability.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims (10)

1. A pressure relief device, comprising:

the mounting seat (1) is fixed in a mounting hole of the pot cover (4) in a matched mode and located on the outer side of the pot cover (4), an upper cavity (14) and a lower cavity (15) which are hollow and communicated are formed in the mounting seat (1), and an exhaust port (11) penetrates through the side wall of the lower cavity (15);

the pressure relief assembly (2) is fixed to the upper cavity (14) and comprises a button (21) capable of being pressed to move downwards;

the exhaust assembly (3) is fixed to the lower cavity (15) and comprises an exhaust valve (31) and an exhaust valve seat (32), a pressure relief opening (322) is formed in the upper end face of the exhaust valve seat (32), the exhaust valve (31) is movably arranged in the exhaust valve seat (32) and is provided with an elastic sealing part (311) covering the pressure relief opening (322);

when exhausting, the exhaust valve (31) is jacked up and leaves the pressure relief opening (322), and the air in the cooker is exhausted from the pressure relief opening (322) and the exhaust opening (11);

during pressure relief, the button (21) is pressed to move downwards and is abutted and extruded to the sealing part (311) of the exhaust valve (31), so that the edge of the sealing part tilts to leave the pressure relief opening (322), and external air enters the cooker from the exhaust opening (11) and the pressure relief opening (322).

2. The pressure relief device according to claim 1, characterized in that a partition (12) is provided in said mounting seat (1), said partition (12) having a first through hole (13), said partition (12) dividing the space in said mounting seat (1) into said upper chamber (14) and said lower chamber (15) communicating with each other.

3. The pressure relief device according to claim 2, wherein the button (21) comprises a pressing portion (211) and a pressing portion (212), one end of the pressing portion (211) is fixed to the pressing portion (212), and the other end of the pressing portion (212) penetrates through the first through hole (13) and is spaced from the sealing portion (311) of the vent valve (31).

4. The pressure relief device according to claim 3, wherein said pressure relief assembly (2) further comprises a button seat (22), said button (21) being movably disposed in said button seat (22); the button seat (22) is provided with a second through hole (221) for the extrusion part (212) to pass through, and the second through hole (221) is aligned with the first through hole (13).

5. The pressure relief device according to claim 4, wherein said pressure relief assembly (2) further comprises an elastic member (23), said button seat (22) further comprises a mounting post (222), one end of said elastic member (23) is sleeved on said mounting post (222), and the other end of said elastic member abuts against said pressing portion (211).

6. The pressure relief device according to claim 5, wherein a buckle (213) is provided on the pressing portion (211), a slot (223) is provided on a side wall of the button seat (22), and the buckle (213) is slidably disposed in the slot (223) and can be clamped with an upper end face of the slot (223).

7. The pressure relief device according to claim 1, wherein a vent hole (314) is formed through the side wall of the vent valve (31); when exhausting, the exhaust valve (31) is jacked up and leaves the pressure relief opening (322), and the air in the pot is exhausted from the exhaust hole (314), the pressure relief opening (322) and the exhaust opening (11).

8. The pressure relief device according to claim 1, wherein said vent valve seat (32) comprises an integrally formed top plate (323), a web (324), and a second step (325), said pressure relief port (322) being provided in said top plate (323); the connecting plate (324) is fixed with the lower cavity (15), and the second step (325) is abutted against the inner side surface of the pot cover (4).

9. A pot cover, characterized in that, the pot cover comprises a handle (5), a mounting hole and the pressure relief device according to any one of claims 1-8, the pressure relief device is mounted in the mounting hole, and the handle (5) is fixedly arranged with the mounting seat (1) of the pressure relief device.

10. A cookware, characterized by comprising a pot body (6) and a lid (4) according to claim 9, the lid (4) being arranged in cooperation with the pot body (6).

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