Valve system with valve locking device for hookah and hookah

Abstract

The utility model relates to a valve system for a hookah (99) having a valve closure (09). In order to design and arrange the valve system outside the closure head in a simple operable manner and in order to enable modular configuration and retrofit, the valve system according to the utility model is characterized in that the valve closure device (09) is arranged in the smoke hose (20) of the hookah (99).

Description

Technical Field

[0001] The invention relates to a valve system for a hookah having a valve closing device and a hookah. Background Art

[0002] A hookah (also called a hookah or hookah bag) usually consists of a water container (the so-called tobacco bottle) and a closing head fixed to the water container. A tobacco pipe is fixed to the closing head, and a tobacco pot is arranged at the upper end of the tobacco pipe, on which tobacco is burned or evaporated together with burning coal. The tobacco pipe extends through the closing head into the water container and is connected to the water container by means of its lower end below the water level. In addition, a connection scheme for at least one tobacco pipe is provided on the closing head, and this tobacco pipe is connected to the air cavity in the water container between the closing head and the liquid level through a corresponding groove. When the user draws through the tobacco pipe, a negative pressure is generated in the air cavity provided in the water container, and the tobacco smoke is thus sucked in through the tobacco pipe and is cleaned, cooled and moistened when passing through the liquid.

[0003] In this case it is important that the closing head completely seals off the water container, since otherwise secondary air would be sucked in and the hookah could no longer be "drawn" correctly.

[0004] Known closure heads are designed, for example, in the form of screw closures or plug-in closures and have connection openings for one or more smoke hoses.

[0005] The connection opening for the smoke hose is connected directly or indirectly to the water container via a groove in a known manner. In order to prevent undesired secondary air from being sucked in through the unused connection openings, in particular when a plurality of connection openings are arranged, each for a smoke hose, a valve block in the form of a non-return valve can be arranged in each of the grooves. The valve block can have a valve body that is subject to gravity and / or spring force and can rest tightly on a valve seat that can be detachably fastened at the end in or on the groove. The valve block or at least the valve body can be removed, inserted or replaced by disassembling the valve seat as required.

[0006] In order to be able to blow fresh air into the air chamber of the water container by means of one of the smoke hoses, in particular during the use of the hookah, for example to reduce the smoke temperature, the relevant non-return valve of the smoke connection is usually removed or a bypass is added by means of a valve group. The non-return valve and the valve group are placed in the closing head. The valve group for adding a bypass to the non-return valve can be manually operated or operated by air pressure by the overpressure in the smoke connection. The blown air escapes through the non-return valve of the other smoke hose connection. There is also an exhaust port with a non-return valve, which can realize an air passage from the smoke bottle to the ambient air and prevent the ambient air from entering the smoke bottle. The opening pressure of the exhaust port non-return valve is lower than the necessary opening pressure of the non-return valve of the smoke connection. The blown air is discharged from the exhaust port on the closing head to the ambient air. The disadvantage is that it is inconvenient to perform manual operation on the closing head, and the fixed placement of the valve group in the closing head does not allow modular configuration or functional modification on the hookah.

[0007] Valve systems known from the prior art (see Figure 2 ) comprises a closing head (98) which can be mounted on a water container (05) of a hookah (99) and has a top side and a bottom side. When mounted on the water container (05), the bottom side faces the water container (05) and the top side is opposite to the bottom side. An upper smoke pipe (23) is mounted on the top side of the closing head (98). The closing head (98) has a first groove (22), a second groove (26) and a third groove (31). The first groove (22) is constructed and arranged to establish a first flow-conducting connection between the upper smoke pipe (23) and the interior of the water container (05). The second groove (26) is constructed and arranged to establish a second flow-conducting connection between the interior of the water container (05) and the environment of the hookah (99). The third groove (31) has a valve group (30). The valve group (30) is constructed and arranged to close the third flow-conducting connection between the third groove (31) and the water container (05) when negative pressure is generated in the water container (05), and to open the third flow-conducting connection when overpressure is generated in the water container (05). Summary of the invention

[0008] Based on the prior art, the object of the present invention is to provide a valve system for a hookah, which is easy to operate, is arranged outside the closing head, and can be modularly configured and retrofitted. According to other advantageous aspects, the insufflation pressure should be less than 500 Pascals, for example, and the negative pressure in the hookah should not open the valve system or reduce the tightness, and the manipulation of the valve system preferably does not require complex manual intervention.

[0009] The invention relates to a valve system with a valve device, characterized in that a valve closing device is arranged in a smoke hose of a hookah. The blowing of air into a water container can be controlled by means of the valve system.

[0010] Advantageous embodiments and developments of the invention are the subject matter of the dependent claims. For example, the valve device is preferably located in the smoke hose connection or the inhalation opening outside the closing head. This valve device has a plurality of switch positions. Due to the negative pressure, no air can flow through this valve device into the water container. This valve device can be permanently left on the hookah without the inhalation of secondary air.

[0011] The valve device of the valve system is preferably arranged outside the closing head.

[0012] In its simplest embodiment, the invention relates to a valve device for a hookah having a valve closure device, wherein the valve closure device is characterized in that it is arranged in a smoke hose of the hookah.

[0013] Compared to conventional designs in which the valve device is arranged in the closing head, this arrangement offers significant advantages in terms of installation space. In addition, the flow resistance is reduced, thereby increasing the comfort of the user. For manufacturers, the increased modularity of the water pipes is advantageous. The corresponding smoke hoses can be supplied either as original equipment or individually or in sets for retrofitting.

[0014] According to a preferred embodiment, the valve closing device is arranged in the smoke hose connector or the suction opening of the smoke hose. This achieves further advantages in terms of modularity. The smoke hose usually comprises a smoke hose connection, a flexible element and a suction opening. Depending on the position of the valve closing device in the smoke hose connector or the suction opening, the other two components of the smoke hose can be selected from standard components. During the conversion process, it is also possible to replace only the smoke hose connector or the suction opening.

[0015] According to another preferred embodiment, the valve closure can be actuated by air pressure or weight. In this context, "actuable" is to be understood as unlockable, i.e., releasing the flow. In the case of actuation by air pressure, the valve is unlocked by applying a negative pressure, usually by the user of the hookah. Actuation by weight is particularly suitable for arrangements in which the valve closure is located in the mouthpiece. By setting a certain angle or angle range relative to the horizontal, the valve closure is unlocked due to its shape and / or the deadweight of its components.

[0016] A particularly preferred embodiment of the valve device is characterized in that, in addition to the valve closing device, the valve device also includes a valve unlocking device. This valve unlocking device can be actuated pneumatically or manually. In the case of actuation by pneumatic means, the valve unlocking device behaves in the opposite way to the valve closing device. The application of negative pressure by the user causes the valve unlocking device to close, thereby preventing flow. In contrast, if the user applies an overpressure, flow is released via the valve unlocking device. Instead of pneumatic actuation, flow can also be released manually via the valve unlocking device. For this purpose, an actuating element for manual actuation by the user can be provided on the smoke hose.

[0017] According to a preferred embodiment, the valve unlocking device is arranged in the smoke hose of the hookah similar to the valve closing device, thereby achieving the same advantages as when adopting a corresponding arrangement of the valve closing device.

[0018] Likewise, the valve unlocking device is preferably arranged, similarly to the valve closing device, in the fumes hose connection or in the intake opening of the fumes hose, so that the same advantages as with a corresponding arrangement of the valve closing device can be achieved.

[0019] Preferably, the valve closing device and the valve unlocking device can be operated independently of each other. This will improve the user's comfort, because the user can use the different functions of the valve closing device and the valve unlocking device independently without affecting each other.

[0020] A particularly preferred embodiment of the valve device is characterized in that the valve locking device and the valve unlocking device are designed in one piece. This embodiment is particularly suitable when a manually operable valve unlocking device is used. In this case, the valve locking device and the valve unlocking device have a common valve body and a common valve seat. The valve can be opened by pneumatic means (i.e., by applying negative pressure by the user) or manually by the user operating an operating element, thereby releasing the flow. An embodiment designed in this way can achieve the greatest possible functionality while using a minimum number of components.

[0021] Preferably, the valve closing device and the valve unlocking device are arranged in a common housing.

[0022] In another preferred embodiment, the valve locking device and the valve unlocking device are arranged coaxially with each other. Such a spatial combination of components and functions can provide greater flexibility and comfort for manufacturers and users. In terms of retrofitting, the number of components to be replaced can be minimized in this way.

[0023] A preferred embodiment of this design is characterized in that the valve closing device is designed as a non-return valve, preferably as a ball non-return valve. This non-return valve is arranged centrally so that the valve body of the valve closing device moves substantially along the axis of the smoke hose. The valve unlocking device is, for example, annular or sleeve-shaped and coaxially surrounds the valve closing device. The valve body of the valve unlocking device, which is designed as a ring or sleeve, also moves substantially along the axis of the smoke hose. This embodiment is also characterized in that the valve closing device and the valve unlocking device can be actuated independently of each other.

[0024] A further embodiment of the invention comprises a hookah having a valve system according to the invention according to one of the above-described embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The invention is described in detail below with reference to the accompanying drawings which merely illustrate exemplary embodiments.

[0026] in:

[0027] Figure 1 A schematic diagram not drawn to scale of the basic structure of a hookah;

[0028] Figure 2 (Cross-sectional view) shows a first embodiment of a closure member with a plurality of smoke connections and exhaust valves according to the prior art (only one smoke connection with a shut-off valve and one exhaust valve are shown in each case);

[0029] Figure 3 (Cross-sectional view) is a second embodiment of a closure member according to the prior art having a valve device for adding a bypass to the valve closing device to blow air into the air chamber of the water container;

[0030] Figures 4a to 4c (Cross-sectional view) shows a first embodiment of a valve system according to the present invention, which has a valve device located in a smoke hose connector and operated by pneumatic means to blow air into an air cavity of a water container;

[0031] Figure 5a to Figure 5b (sectional view) is a second embodiment of the valve system according to the present invention, which has a valve device located in the smoke hose connector and is manually operated to blow air into the air cavity of the water container;

[0032] Figure 6 (sectional view) is a third embodiment of the valve system according to the present invention, which has a valve device located in the suction port and operated by pneumatic means to blow air into the air cavity of the water container;

[0033] Figure 7a to Figure 7b (sectional view) is a fourth embodiment of the valve system according to the present invention, which has a valve device located in the suction port and is manually operated to blow air into the air cavity of the water container;

[0034] Figure 8a to Figure 8b (Cross-section) is a fifth embodiment of a valve system according to the present invention having a valve device in the mouthpiece that is manually operated to blow air into the air cavity of the water container.

[0035] In the figure:

[0036] 03 Liquid

[0037] 04 Liquid Level

[0038] 05 Water Container

[0039] 06 Smoke pipe

[0040] 07 Air cavity

[0041] 08 Sealing elements

[0042] 09 Valve locking device

[0043] 10 First check valve ball

[0044] 11 Valve seat

[0045] 12 Control elements

[0046] 13 Spring

[0047] 14 Spring

[0048] 17 Smoking pot

[0049] 19 Smoke hose connector

[0050] 20 Smoke Hose

[0051] 21 Suction port

[0052] 22 First groove

[0053] 23 Upper smoke pipe

[0054] 24 Lower smoke pipe

[0055] 26 Second groove

[0056] 30 Valve Group

[0057] 31 Third groove

[0058] 40 Valve unlocking device

[0059] 41 Pneumatically operated valve unlocking device

[0060] 42 Manually operable valve unlocking device

[0061] 60 Fourth groove

[0062] 70 Second check valve ball

[0063] 71 Valve body

[0064] 72 Second valve seat

[0065] 73 Third valve seat

[0066] 74 Ring Space

[0067] 76 Torus

[0068] 77 Fifth Groove

[0069] 78 Sixth groove

[0070] 79 Ring Space

[0071] 80 Torus

[0072] 81 Sealing surface

[0073] 82 Total surface area of ​​the second check valve ball 70

[0074] 85 Seventh Groove

[0075] 86 Eighth Groove

[0076] 90 Inner profile

[0077] 98 Closed Head

[0078] 99 Hookah DETAILED DESCRIPTION

[0079] According to the prior art hookah 99 Figure 1 The example shown has a water container 05, which is filled with liquid 03, preferably water, in such a way that the air chamber 07 remains above the liquid level 04. The water container 05 is closed by means of a closing head 98. The closing head 98 can be connected to the water container 05 in a removable manner by means of a sealing element 08, for example (as shown in the figure), or can be connected to the water container 05 in a form-fitting manner, for example by screwing (not shown). The closing head 98 can be composed of multiple parts or (as shown in the figure) can be formed in one piece. A smoke pipe 06 extends through the closing head 98, which is connected to the liquid 03 in the water container 05 below the liquid level 04 by means of its lower end. In the upper end area of ​​the smoke pipe 06, the smoke pipe is equipped with a smoke pot 17, on which burning coal and evaporated tobacco can be held. On the closing head 98, a smoke hose connector 19, a smoke hose 20 and a suction opening 21 are arranged in a smoke hose connector groove (second groove) 26, which extends through the closing head 98 into the air chamber 07. If the user sucks on the mouthpiece 21, it will generate negative pressure in the water container 05, more precisely in the air cavity 07, through which air rich in evaporated tobacco aroma will be inhaled through the smoke tube 06 and the liquid 03, cooled, cleaned, calmed and moistened through the smoke hose 20, and then fed to the user.

[0080] Closed system with exhaust valve 30 Figure 2 The exemplary embodiment shown has a closing head 98 which is fastened in a sealing manner to the water container 05 via a sealing element 08 .

[0081] The closing head 98 has a through opening (first groove) 22. Two-part smoke pipes 23 and 24 are fixed to this opening, wherein the upper smoke pipe 23 is screwed into the upper opening and the lower smoke pipe 24 is screwed into the lower opening. The through opening (first groove) 22 is constructed and arranged to establish a first flow-conducting connection between the upper smoke pipe 23 and the interior of the water container 5. A smoke pot 17 (not shown) is installed at the upper end of the upper smoke pipe 23; the lower smoke pipe 24 is connected to the liquid 03 located in the water container 05.

[0082] As used herein, the term "fluid conducting connection" means a connection that can conduct both liquids and gases.

[0083] One or more smoke hose connector grooves (second grooves) 26 are preferably arranged in the closing head 98 at an angle of about 45° to the smoke hose axis. One or more smoke hose connector grooves 26 are connected to the internal air cavity 07. One or more smoke hose connector grooves 26 are constructed and arranged to establish a second flow-conducting connection between the interior of the water container 05 and the environment of the hookah 99.

[0084] In the case of using multiple smoke hose connector grooves 26, a valve group 09 is arranged in the first groove 27, each of which has a valve body preferably in the form of a check valve ball 10 and a valve seat 11. The check valve ball 10 rests on the valve seat 11 by its own weight or a spring (not shown) and seals the air chamber 07 relative to the first groove 27. The check valve ball 10 can be optionally removed.

[0085] One or more third grooves 31 for making a gas-permeable connection between the air chamber 07 and the outside of the closing head 98 are arranged in the closing head 98. A valve group 30, for example in the form of a check valve, is arranged in the third groove 31. The valve group 30 is constructed and arranged to close the third flow-conducting connection between the third groove 31 and the water container 5 when a negative pressure is generated in the water container 5, and to open the third flow-conducting connection when an overpressure is generated in the water container 5. The valve group 30 can be constructed as an exhaust valve.

[0086] If air is blown into one or more smoke hose connection grooves 26, on which a smoke hose is usually mounted, while the non-return valve ball 10 has been removed from this or these smoke hose connection grooves in the valve closing device 09, smoke will be discharged from the air chamber 07 to the ambient air through the valve block 30 and the third groove 31. If the non-return valve ball 10 is located in the valve closing device 09, air cannot be blown in.

[0087] Valve system Figure 3 The second embodiment shown is Figure 2 The embodiments shown are equivalent, except for the valve unlocking device. The valve body embodiments shown below are merely exemplary and are not limited to the spherical shapes shown.

[0088] The closing element 98 also includes a pneumatically operated pneumatic valve unlocking device 40. The seventh groove 85 is connected to the first groove 27, which is preferably located above the first check valve ball 10. The seventh groove 85 is also connected to the fifth groove 77 located below the center of the second check valve ball 70. The second check valve ball 70 rests on the second valve seat 72 in the fifth groove 77 by its own weight or a spring not shown and seals the seventh groove 85 relative to the air chamber 07. The fifth groove 77 has a third valve seat 73 and is connected to the ambient air outside the water container 05 through the sixth groove 78.

[0089] The diameter of the preferably cylindrical fifth groove 77 is only slightly larger than the diameter of the second nonreturn valve ball 70. The small annular gap between the fifth groove 77 and the second nonreturn valve ball 70 provides a sealing effect between the sixth groove 78 and the seventh groove 85.

[0090] If an overpressure is generated by blowing air into the smoke hose 20 via the smoke hose connector 19, this overpressure acts on the annular surface 80 of the second check valve ball 70 and the first check valve ball 10. The total surface 82 of the second check valve ball 70 is loaded with ambient pressure via the sixth groove 78. The sealing surface 81 is pressurized in the air chamber 07. When the valve unlocking device 40 is closed, the air pressure in the air chamber 07 is equal to or less than the ambient pressure. Due to the air pressure conditions, the first check valve ball 10 is pressed firmly and tightly against its valve seat 11 under the action of the force generated when blowing in air, and the second check valve ball 70 is lifted from the second valve seat 72 and placed in sealing contact with the third valve seat 73. The air blown in from the smoke hose thus enters the air chamber 07 of the water container 05 via the first groove 27, the fifth groove 77 and the seventh groove 85. The overpressure generated in the air chamber 07 of the water container 05 escapes via the valve block 30 (not shown) or the valve closing device (not shown) of another smoke hose connector. Since the fifth groove 77 is preferably arranged parallel to the smoke column, the air jet of the blown air will hit the water surface of the water container 05 without being strongly mixed with the smoke in the air cavity 07. This ensures that the smoke in the water container 05 can be quickly emptied.

[0091] If the blowing of air into the smoke hose stops, the second check valve ball 70 seals the second valve seat 72 by its own weight or the elastic force of a spring (not shown) and blocks the connection between the seventh groove 85 and the air chamber 07. If a negative pressure is generated in the air chamber 07 of the water container 05 by suction through the smoke hose, the negative pressure acts on the sealing surface 81 of the second check valve ball 70. As a result, the second check valve ball 70 is sealed against the second valve seat 72 with a greater force.

[0092] The valve system according to the invention Figure 4a , 4b and the first embodiment shown in 4c and Figure 2The exemplary embodiment shown is essentially equivalent, differing in that the aerosol hose connector 19 has the valve closing device 09 and the valve unlocking device 41 and the valve closing device 09 is (absent) in the closing head 98 .

[0093] The smoke hose connector 19 has a valve closing device 09 consisting of a check valve ball 10 and a valve seat 11. The smoke hose connector 19 also contains a pneumatically driven pneumatic valve unlocking device 41, which consists of a valve body 71 and a valve seat 72. The valve closing device 09 and the valve unlocking device 41 are mechanically and pneumatically independent of each other. The seventh groove 85 in the valve body 71 is connected to the fourth groove 60, which is preferably located above the first check valve ball 10. The seventh groove 85 is also connected to the annular space 79. The eighth groove 86 is connected to the second groove 26, which is preferably located below the check valve ball 10. In the first switching position, the valve body 71 closes the eighth groove 86 on the valve seat 72. In the second switching position, the valve body 71 releases the eighth groove 86 on the valve seat 72. The annular space 74 is connected to the ambient air via the sixth groove 78. The valve body 71 seals the annular space 74 relative to the annular space 79. The valve body 71 is preferably arranged coaxially with the valve closing device 09. In the first switching position, the valve body 71 bears against the valve seat 72 by its own weight or a spring (not shown) and seals the seventh groove 85 relative to the second groove 26 and the air chamber 07 .

[0094] If an overpressure is generated by blowing air into the smoke hose 20 via the smoke hose connector 19, this overpressure acts on the annular surface 76 of the valve body 71 and the first non-return valve ball 10. The annular surface 80 of the valve body 71 is loaded with ambient pressure via the sixth groove 78. When the valve unlocking device 40 is closed, the air pressure in the air chamber 07 is equal to or less than the ambient pressure. Due to the air pressure conditions, the first non-return valve ball 10 is pressed firmly and tightly against its valve seat 11 under the action of the force generated when blowing in air, and the valve body 71 is lifted from the second valve seat 72 and moved to the second switching position. The air blown in from the smoke hose thus enters the air chamber 07 of the water container 05 via the seventh groove 85 and the eighth groove 86 as well as the second groove 26. The overpressure generated in the air chamber 07 of the water container 05 escapes via the valve block 30 or the valve closing device (not shown) of the other smoke hose connectors. Since the second groove 26 is preferably arranged parallel to the smoke column, the air jet of the blown air will hit the water surface in the water container 05 without being strongly mixed with the smoke in the air cavity 07. This ensures that the smoke in the water container 05 can be quickly emptied.

[0095] If the blowing of air into the smoke hose stops, the valve body 71 seals the second valve seat 72 by its own weight or the elastic force of a spring (not shown) and blocks the connection between the seventh groove 85 and the eighth groove 86. If a negative pressure is generated in the air chamber 07 of the water container 05 by suction through the smoke hose, this negative pressure does not act on the valve body 71 in an open manner.

[0096] The valve system according to the invention Figure 5a and 5b The second embodiment shown is Figure 2 The illustrated embodiment is substantially equivalent, with the difference that the fumes hose connector 19 has a valve closing device 09 and a valve unlocking device 42 and a valve closing device 09 in the closing head 98 (missing and not shown). The fumes hose connector 19 has a valve closing device 09, which consists of a non-return valve ball 10 and a valve seat 11. The fumes hose connector 19 also contains a manually actuatable valve unlocking device 42, which has an actuating element 12. In a first switching position, the actuating element 12 is in a rest position. If this actuating element is moved to a second switching device, this actuating element lifts the non-return valve ball 10 from the valve seat 11. If an overpressure is generated by blowing air into the fumes hose 20 via the fumes hose connector 19, the air will flow through the opened valve closing device 09 to the air chamber 07 (not shown). The overpressure generated in the air chamber 07 (not shown) of the water container 05 (not shown) can escape through the valve block 30 (not shown) or the valve closing device (not shown) of another fumes hose connector. If the actuating element 12 is not actuated, it is moved back into the first switching position by its own weight or a spring force. The actuating element 12 can be mounted axially, radially or rotatably.

[0097] The valve system according to the invention Figure 6 The third embodiment shown is substantially equivalent to the embodiment shown in FIG4 , except for the arrangement of the valve closing device 09 and the valve unlocking device 41 in the suction port 21. The check valve ball 10 is pressed against the valve seat 11 by means of the spring 13. The valve body 71 is pressed against the valve seat 72 by means of the spring 14.

[0098] The valve system according to the invention Figure 7a and 7b The fourth embodiment shown is substantially equivalent to the embodiment shown in Fig. 5, except for the arrangement of the valve closing device 09 and the valve unlocking device 42 in the suction port 21. The check valve ball 10 is pressed against the valve seat 11 by means of the spring 13.

[0099] The valve system according to the invention Figure 8a and Figure 8b The fifth embodiment shown is Figure 2The embodiment shown is substantially equivalent, except that the suction opening 21 has a valve closure 09 and the valve closure 09 is (absent) in the closing head 98. The suction opening 21 has a valve closure 09 consisting of a non-return valve ball 10 and a valve seat 11. When the suction opening 21 is angled from the horizontal by about 30 to 90 degrees, the contour of the valve seat 11 holds the non-return valve ball 10 in the valve seat 11 by its own weight. If the orientation angle is relatively flat (0 to about 30 degrees), the non-return valve ball 10 leaves the valve seat 11 by its own weight and rests on the inner contour 90. The inner contour 90 is angled relative to the center axis of the suction opening 21 in such a way that the non-return valve ball 10 returns to the valve seat 11 when the suction opening is tilted by more than about 30 degrees. At a steeper angle (about 30 to 90 degrees), the valve closure 09 is effective. At a flatter angle (0 to about 30 degrees), the locking effect of the valve closure 09 is eliminated. If the angle of the suction port 21 is relatively flat, air can be blown into the air cavity 07 (not shown) through the suction port 21 and the smoke hose 20 .

Claims

1. A valve system for a hookah with a valve locking device, characterized in that: The valve closing device (09) is arranged in the smoke hose (20) of the hookah (99).

2. The valve system according to claim 1, characterized in that The valve closing device (09) is arranged in a smoke hose connector (19) or in an intake opening (21) of the smoke hose (20).

3. The valve system according to claim 1 or 2, characterized in that: The valve closing device (09) can be actuated by air pressure or weight.

4. The valve system according to any one of claims 1 to 3, characterized in that It also includes a valve unlocking device (41) that can be operated by pneumatic pressure or a valve unlocking device (42) that can be operated manually.

5. The valve system according to claim 4, characterized in that The valve unlocking device (41, 42) is arranged in the smoke hose (20) of the hookah (99).

6. The valve system according to claim 5, characterized in that The valve unlocking device (41, 42) is arranged in a smoke hose connector (19) or in a suction opening (21) of the smoke hose (20).

7. The valve system according to any one of claims 4 to 6, characterized in that The valve closing device (09) and the valve unlocking device (41, 42) can be actuated independently of one another.

8. The valve system according to any one of claims 4 to 7, characterized in that The valve closing device (09) and the valve unlocking device (42) are arranged in a common housing.

9. The valve system according to claim 8, characterized in that The valve closing device (09) and the valve unlocking device (42) are arranged coaxially with respect to one another.

10. The valve system according to claim 8 or 9, characterized in that The valve unlocking device (42) is annular or sleeve-shaped and coaxially surrounds the valve closing device (09) which is designed as a non-return valve.

11. A hookah, characterized in that: A valve system according to any one of claims 1 to 10 is provided.

Images