Gasket device and pneumatic valve system for commercial vehicles

Abstract

Provided is a gasket device and a pneumatic valve system for a commercial vehicle, the gasket device (9) comprising: a gasket part (19) adapted to be inserted at least into a groove of a contact surface (12) of a first housing part (such as an adapter), the gasket part (19) comprising at least one gasket chamber (304, 314, 324, 334, 344) for sealingly connecting a device passage of the mounted housing part; a body part (5) adapted to be received in a valve seat (6) of the housing part; at least one spring part (7) connecting the body part (5) and the gasket part (19), wherein by bending or stretching the at least one spring part (7), the body part (5) is capable of moving relative to the gasket part (19) in the air flow direction, wherein in an unbiased basic state of the gasket device (9), the body part (5) is positioned above a gasket plane defined by the gasket chamber (304), and wherein the gasket device (9) is manufactured as a single part from a flexible elastic material.

Description

Field of the Invention

[0001] The present invention relates to a gasket device for a pneumatic valve system, and a pneumatic valve system including such a gasket device. The pneumatic valve system is preferably a pneumatic supply system of a commercial vehicle or a part of a pneumatic supply system. Background Art

[0002] In a pneumatic device including two or more housing parts, the housing parts are typically connected to each other at corresponding contact surfaces, especially at flat flange surfaces. Generally, the connection between the housing parts is sealed by a gasket to enable air flow between the passages of the housing parts. The gasket is preferably made of a rubber material or a plastic material and can be inserted into a groove or a groove system at one of the contact surfaces. The housing parts are then mounted onto each other and fixed, for example, by screws or bolts, thereby pressing the gasket between the housing parts. Thus, the gasket provides a reliable airtightness of the air flow passage between the housing parts without leakage.

[0003] Furthermore, a pneumatic device typically includes different valve parts. One of these valve parts is a check valve or a one-way valve that allows air flow in the direction of the air flow and blocks reverse air flow. The check valve or the one-way valve generally includes a valve seat, a valve body (especially a valve ball), and a spring for biasing the valve body onto the valve seat. For example, by supporting the valve spring on a first housing part and implementing the valve seat on another housing part, the check valve can be positioned between two mating housing parts.

[0004] The air supply system of a commercial vehicle typically includes: an inlet port that will be connected to the compressor outlet; an outlet port for an air consumer circuit, especially a brake circuit; a desiccant cartridge for drying the compressed air supplied by the compressor; and a solenoid valve. The solenoid valve is arranged to switch between a supply stage and a regeneration stage for regenerating the desiccant cartridge. Generally, at least one check valve is provided to block air flow during one of these stages.

[0005] US2,018,769 A discloses improvements in the valve structure of a ball valve. A ball valve assembly includes a housing that has flanges at its inlet end and outlet end, is enlarged in the middle and has a flange. The middle flange compresses the edges of a slotted multi-legged bracket, where the multi-legged bracket includes a hollow frustum that converges upstream from its base and terminates at a valve seat. The spherical ball is made of a suitable alloy steel and is disposed within the valve housing. During fluid flow downstream through the housing, a downstream valve seat is provided for the ball. The valve seat is formed by the multi-legged bracket that extends transversely across the housing and the base, where the multi-legged bracket is clamped between parts of the housing. Further, a gasket made of a soft material such as asbestos is provided between the base part and another part.

[0006] US1,743,585 A describes a gasket for use in an oil pump and a fuel pump. The pump includes a housing having an upwardly extending portion which serves as a guiding and supporting means and which provides a conduit between an inlet port and an outlet port. Further, a fibrous sheet is provided between the housing and a cap closing the open end of the housing, the sheet including an opening connecting the conduit to the port. In addition, a valve element is provided for co-operating with one of a number of openings. The fibres are shaped to provide a valve seat for the valve element.

[0007] These device systems generally provide a sealing function through a gasket and further provide a check valve function through an additional part. However, such devices are complex and it is time-consuming to assemble the device with these elements. SUMMARY OF THE INVENTION

[0008] Accordingly, it is an object of the present invention to achieve a gasket device and a pneumatic valve system for a commercial vehicle which can achieve reliable functionality with low-cost and time-saving assembly.

[0009] This object is achieved by the gasket device and the pneumatic valve system of the present invention.

[0010] Thus, the gasket device includes a gasket portion for achieving the functionality of the gasket, the gasket portion providing a sealing function between two housing parts mounted together. The gasket portion defines at least one, preferably two or more, gasket chambers for achieving a sealed connection of the air flow channels of the connected housing parts.

[0011] Further, the gasket device includes a valve insert of a check valve, the valve insert including: a body portion preferably shaped as a ball portion for pressing against a valve seat; and at least one spring portion for biasing the body portion and connecting it to the gasket portion.

[0012] The gasket device is manufactured as a single part, preferably made of rubber or plastic material, in particular made of only a single material (such as rubber or plastic).

[0013] Thus, manufacturing the gasket device is relatively inexpensive and the assembly time for mounting the housing parts together with the gasket device located therebetween is relatively short.

[0014] By implementing the check valve function by the gasket device, no other elements or additional devices are required. The body portion is already implemented in the gasket device and further, the spring function or biasing force is implemented by the gasket device.

[0015] In the unbiased and untensioned basic state of the gasket device, the spring portion preferably supports the body portion at a position above the gasket plane defined by the gasket portion.

[0016] Inserting the gasket part into the groove of the housing part provides a more stable supporting function or bracing function for the valve insert (i.e., the spring part and the body part) as compared to setting additional bracing elements.

[0017] When the gasket device is inserted into the groove of the housing part (e.g., an adapter), the body part contacts the valve seat of the housing part and is displaced thereafter against the elastic force of the spring part. Accordingly, the spring part has provided an elastic biasing force for pressing the body part against the valve seat, thereby closing the check valve.

[0018] The body part and the valve seat preferably implement a blocking function for blocking reverse air flow. Accordingly, both functions, i.e., the gasket sealing function and the check valve function, can be implemented in a surprisingly simple manner by a single part.

[0019] The body part may include at least a partially spherical form for implementing a typical ball valve. Further, other body part forms are possible, e.g., a conical form, a flat form or a flange form. These forms can be easily achieved by shaping the material of the gasket device during the manufacturing process.

[0020] Preferably, more than one spring part is provided. Preferably, at least two, in particular three, spring parts are provided, thereby implementing a multi-legged bracket for supporting the body part. Such an arrangement of two or three, possibly four, spring parts achieves a symmetric support of the body part and a biasing direction perpendicular to the gasket plane. The cross-sections of the spring part and the body part do not impede the air flow through the gasket chamber provided with the check valve function.

[0021] The displacement distance of the body part and the spring force or biasing force can be easily adjusted by the form and number of the spring parts. Accordingly, the form, cross-section and number of the spring parts can be designed for specific valve characteristics without the use of other elements.

[0022] According to a preferred embodiment, the gasket device includes a plurality of gasket chambers for connecting a plurality of air flow chambers of adjacent, connected housing parts. Accordingly, the check valve function is implemented in at least one of these gasket chambers without affecting the other gasket chambers. Accordingly, a complex gasket can be implemented, which includes a plurality of gasket chambers having a corresponding number of check valves.

[0023] The gasket part is preferably manufactured as a net of sealing lines or gasket lines for insertion into the groove of the housing part. The cross-section of the sealing line includes a part inserted into the groove and preferably includes a protrusion protruding from the contact surface or flange surface of the first housing part for pressing against the contact surface of the other housing part, thereby ensuring a reliable seating function.

[0024] According to another aspect of the present invention, there is provided a pneumatic valve system, which includes two housing parts and a gasket device according to the present invention located therebetween. Thus, a number of air flow connections between the two housing parts can be achieved and sealed by the gasket chambers of the gasket device; further, one or more of these air flow connections can be provided with a check valve function, in particular a one-way valve function, without the need for any other devices. Preferably, only the housing parts, the gasket device and the screws for fixing them are required.

[0025] According to one aspect of the present invention, there is provided a pneumatic valve system, in particular a pneumatic air supply system for a commercial vehicle. The gasket device is preferably arranged to connect the valve housings of two solenoid valves to an adapter (in particular an adapter for receiving pneumatic pipelines). The two solenoid valves (in particular a compressor valve and a regeneration valve) switch between at least a supply stage and a regeneration stage, wherein the check valve function of the gasket device is used to switch between different air flow directions during these stages. Description of the Drawings

[0026] The present invention will be described in detail below with reference to the accompanying drawings, in which:

[0027] Figure 1 is a perspective front view of an adapter having an air flow chamber and a gasket device according to an embodiment of the present invention;

[0028] Figure 2 is Figure 1 an enlarged cross-sectional view of;

[0029] Figure 3 is an exploded view of a pneumatic valve system having a check valve according to the present invention;

[0030] Figure 4 is a rear view of an adapter having one compressor outlet channel according to a first embodiment;

[0031] Figure 5 is corresponding to Figure 1 and is a front view of the Figure 4 adapter with the inserted gasket device;

[0032] Figure 6 is a rear view of an adapter having two compressor outlet channels according to a second embodiment;

[0033] Figure 7 is a front view of the Figure 6 adapter with the inserted gasket device;

[0034] Figure 8 is a pneumatic scheme of an air supply system in a pneumatic system for a commercial vehicle;

[0035] Figure 9 which shows the enlarged details of a gasket device or a check valve device according to an embodiment Figure 8 ;

[0036] Figure 10 is Figure 1 、 Figure 2 the perspective rear view of a gasket device according to an embodiment of

[0037] Figure 11 is Figure 10 the enlarged details;

[0038] Figure 12 is the rear view of the gasket device disposed on the second housing part; and

[0039] Figure 13 is a pneumatic valve system according to the prior art. DETAILED DESCRIPTION

[0040] Figure 13 FIG. shows a pneumatic valve system 1001 having a housing 1002, a check valve 1003, and an air flow passage 1004. The check valve 1003 is inserted into the air flow passage 1004 to define an air inlet 1004a and an air outlet 1004b in the air flow passage 1004. The check valve 1003 allows air flow from the air inlet 1004a to the air outlet 1004b and blocks reverse air flow. Thus, the check valve 1003 includes: a valve body 1005; a valve seat 1006; a spring 1007 for pressing the valve body 1005 against the valve seat 1006; and generally includes a valve insert 1008 that acts as an end support for the spring 1007 and is inserted into the air flow passage 1004. Those check valves 1003 are reliable for controlling air flow; however, the assembly includes several parts. Further, when assembling the check valve 1003, the housing 1002 is mounted to another housing part by an additional gasket 1019 for sealing the air flow passage.

[0041] Figures 1 to 3 and Figures 10 to 12 depicts a portion of a pneumatic valve system 1 according to an embodiment of the present invention, in which an adapter 30 and a gasket device 9 are inserted into a flange surface 12 of the adapter 30, where the flange surface 12 is located at Figure 1 the front face 30b of the adapter visible in

[0042] The adapter 30 includes a plurality of air flow passages 104, 114, 124, 114a, 114b at its flange surface; Figure 10The gasket device 9 shown is inserted into the flange surface 12 and includes corresponding gasket channels 304, 314, 324, 334, 344, which are assembled to the respective air flow channels 104, 114, 124, 114a, 114b of the adapter 30.

[0043] Thus, the adapter 30 forms the first housing part. Figure 2 and Figure 12 The second housing part 2 shown is mounted on the front face 30b of the adapter 30, and the gasket device 9 is disposed between the housing parts 30, 2 and seals the air connection between the housing parts 30, 2 through its gasket chambers 304, 314, 324, 334 and 344, which will be explained in more detail below.

[0044] Further, a third housing part 32, preferably a solenoid valve housing part, is connected to the rear face 30a of the adapter 30, as Figure 3 visible. The components of the housing parts (i.e., the adapter 30, the second housing part 2 and the third housing part 32) are fixed by screws 33, which are inserted into screw holes 13 provided in the adapter 30.

[0045] Figure 10 and Figure 11 depicts the gasket device 9 in its basic state of being un-biased and un-tensioned. Further, Figure 2 a cross-section of the adapter 30 and the inserted gasket device 9 is shown; thus, in Figure 2 , the gasket device 9 is in its installed state, in which the gasket device is un-biased or pre-loaded. The gasket device 9 is implemented as a single part, preferably made of rubber or plastic material, preferably without another insert such as metal. The gasket device 9 includes a gasket part 19 acting as a gasket, three spring parts 7-1, 7-2, 7-3 acting as valve springs, and a valve body part 5 acting as a valve body, particularly a valve ball. Thus, the gasket device 9 includes an integrated check valve function. No additional valve insert is required, and in a conventional check valve, the additional valve insert includes the movable parts of the valve, i.e., the valve body and the spring; the functions of the conventional valve insert have been realized by the three spring parts 7-1, 7-2, 7-3 and the valve body part 5.

[0046] The adapter 30 includes a flange surface 12 having a groove 11 for receiving the gasket part 19 of the gasket device 9. The three spring parts 7-1, 7-2, 7-3 and the valve body part 5 corresponding to the conventional valve insert form a multi-legged bracket 8 (spider-like feature), thereby supporting the valve body part 5 above the gasket plane defined by the gasket part 19. In the installed state, the body part 5 is pressed against the conical valve seat 6 of the housing 2, see Figure 2 . Thus, the body part 5 is biased towards its closing direction by the spring force of the spring part 7.

[0047] According to Figure 2 , the cross-section of the spring portion 7 of each of the three spring portions 7-1, 7-2, 7-3 may be smaller than the cross-section of the body portion 5, which is preferably spherical and serves as a valve ball. However, other forms of the body portion 5 are possible for interaction with the corresponding valve seat 6 of the second housing portion 2. The gasket portion 19 is inserted into the groove 11 of the adapter 30 and the corresponding groove 211 of the second housing portion 2. The second housing portion 2 includes at least one second air flow channel 220.

[0048] When the second housing portion is mounted on the flange surface (contact surface) 12 of the adapter 30, the gasket portion 19 of the gasket device 9 is pressed into the groove 211 of the second housing portion 2, thus ensuring the seating function.

[0049] Figure 3 An exploded view of a pneumatic device is shown, which has an adapter 30, a gasket device 9 according to an embodiment, and a third housing portion 32, in particular a solenoid valve housing portion that houses a solenoid valve. The assembly is fixed by screws 33 inserted into the screw holes of the third housing portion 32 and the screw holes 31 of the adapter 30.

[0050] Figure 4 and Figure 5 shows a first embodiment of the adapter 30.

[0051] Figure 4 Shows the back surface 30a of the adapter 30, which is connected to the third housing portion 32. The back surface 30a includes: a regeneration channel 104 that connects to the solenoid valve outlet of the third housing portion 32; a compressor channel 114; and an exhaust channel 124. The back surface 30a of the adapter 30 may further include a terminal connector 130 that is not connected to a conduit or opening on the front surface 30b of the adapter. The air channels 104, 114, 124 of the back surface 30a are connected to the air channels 104, 114a, 114b, 124 on the front surface 30b of the adapter 30; thus, the channel arrangements of the front surface 30b and the back surface 30a may be different.

[0052] Figure 5 Shows the front surface 30b of the adapter 30, which includes grooves 11 in which the gasket device 9 is received. Thus, the front surface 30b of the adapter 30 is covered by the gasket device 9 including gasket chambers 304, 314, 344, 324, and 334. The air flow chamber arrangement of the front surface 30b of the adapter 30 corresponds to the topology of the gasket device 9, as has been described with reference to Figure 1 stated.

[0053] InFigure 4 and Figure 5 In this embodiment of Figure 4 and Figure 5 , the compressor passage 114 on the back surface 30a is connected to the first compressor passage 114a and the second compressor passage 114b on the front surface 30b, wherein the first compressor passage 114a is sealed by the gasket chamber 334, and the second compressor passage 114b is sealed by the gasket chamber 314.

[0054] Therefore, the compressor passages 114a, 114b are connected in parallel to the compressor outlet of the third housing part 32.

[0055] Figure 6 and Figure 7 Another embodiment of the adapter 30 is shown, which generally corresponds to the embodiments of Figure 4 and Figure 5 ; however, only the first compressor passage 114a is provided on the front surface of Figure 4 to supply compressed air to only one air passage (e.g., a pneumatic brake passage). Figure 4 and Figure 5 Figure 7 Figure 7 Figure 7

[0056] Therefore, the present invention provides the possibility of implementing different types of adapters as well as different numbers of air flow passages and the supplied pneumatic circuits.

[0057] Figure 10 and Figure 11 More details of the gasket device 9 are shown, which can be used in the two embodiments of Figure 7 , and

[0056] . Figure 4 、 Figure 5 and Figure 6 、 Figure 7 Figure 7

[0058] Therefore, the gasket device 9 can be manufactured at low cost and includes different gasket chambers 304, 314, 344, 324 and 334, which are used to seal the corresponding passages 104, 114a, 114b, 124 of the adapter 30 and the corresponding connection surfaces of the second housing part 2.

[0059] Figures 4 to 7 The gasket device 9 of Figure 7 particularly includes: a regeneration gasket chamber 304; a solenoid valve inlet chamber 344, which is located in the central part of the gasket device 9; a first compressor solenoid valve outlet chamber 314; a second compressor solenoid valve outlet chamber 334; and an exhaust chamber 324. The multi - leg bracket 8 composed of three spring parts 7 - 1, 7 - 2, 7 - 3 and the body part (ball part) 5 realizes a check valve function or a one - way valve function between the chambers connected by the regenerator gasket chamber 304. Therefore, the body part 5 comes into contact with the valve seat 6 provided in the second housing part 2.

[0060] The number, form, and cross-section of the spring parts 7-1, 7-2, and 7-3 are designed specifically to provide the required valve functionality depending on the air flow conditions.

[0061] Therefore, Figure 12 depicts the position of the body channel or housing channel relative to the gasket chamber. Thus, the body channels provided for different air flow functions are surrounded by the corresponding gasket chambers. As Figure 12 and Figure 1 can be seen, both of the two housing parts to be connected by the gasket device 9 include flange surfaces: the adapter 9 includes the flange surface 12, and the other housing part 2 includes the corresponding mating flange surface to be connected to the flange surface 12, where the gasket device 9 is located between them and is pressed by them. Further, both of the two flange surfaces include screw holes to be fixed by screws 33.

[0062] Figure 8 shows the pneumatic scheme of the air supply system, which particularly includes the inlet ports p11, p12 and the outlet ports p21, p22, p23, p24, p25, p26, p3, p4. The compressor is connected to the compressor inlet port p11 through its compressor outlet, and is connected to the solenoid valves 404, 405 via the air flow valve 401 and the filter 402. These solenoid valves are particularly set as the regeneration valve and the compressor valve for switching between the supply stage and the regeneration stage. In the supply stage, the compressor supplies pressurized air to the outlet ports p21, p22, p23, p24, and p25, while the regeneration stage is for regenerating the filter 402. The filter 402 preferably includes one or two desiccant cartridges to be regenerated in the regeneration stage. The outlet ports p21 to p25 are set for supplying pressurized air to the air consumption circuits; these air consumption circuits are particularly the brake circuit, the trailer brake circuit, and / or another pneumatic consumer circuit.

[0063] Figure 9 shows Figure 8 an enlarged view of the scheme, where the components will be realized by the gasket device 9 of the present invention. Thus, the gasket device 9 realizes the function of the check valve 408 and the sealing function or gasket function between the solenoid valves 404, 405 and the housing with the supply line 410. According to the present invention, the gasket device 9 can combine the functions of one or more check valves and the sealing function or gasket function to one or more valves to be connected.

[0064] According to Figure 9 , the check valve 408 is arranged between the regeneration solenoid valve outlets 404a of the regeneration solenoid valve 404. Further, the throttle valve 411 connected to the regeneration solenoid valve outlet and the check valve 408 can be realized by the gasket device 9.

[0065] List of reference numerals (part of this specification)

[0066] 1 Pneumatic valve system, pneumatic valve device

[0067] 2 Second housing part

[0068] 3 Check valve

[0069] 4 Air flow channel

[0070] 4a Inlet of the air flow channel

[0071] 4b Outlet of the air flow channel

[0072] 5 Body part

[0073] 6 Conical valve seat

[0074] 7 Spring part 8 Multi - leg bracket, movable part of the gasket device 9 Gasket device

[0075] 11 Groove in adapter 30 12 Flange surface (contact surface) of adapter 30

[0076] 13 Screw hole

[0077] 14, 24, 34, 44 Air flow chamber

[0078] (44) Gasket part

[0079] 22 Recess in adapter 30 30 Adapter (first housing part)

[0080] 30a Back surface of adapter 30

[0081] 30b Front surface of adapter 30

[0082] 33 Screw

[0083] 34 Pneumatic supply device

[0084] 104 Regeneration channel of adapter 30

[0085] 114 Compressor channel of adapter 30

[0086] 114a, 114b First compressor channel and second compressor channel 124 Solenoid valve exhaust channel of adapter 30

[0087] 130 Terminal connection of adapter 30

[0088] 211 Groove in second housing part 2

[0089] The second flange surface in the second housing part 2 The second air flow channel in the second housing part 2 304, 314, 324, 334, 344 Gasket chambers:

[0090] - 304 Regeneration gasket chamber

[0091] - 314 First compressor solenoid valve outlet chamber

[0092] - 324 Exhaust chamber

[0093] - 334 Second compressor solenoid valve outlet chamber

[0094] - 344 Solenoid valve inlet chamber

[0095] 404 Regeneration solenoid valve

[0096] 405 Compressor solenoid valve

[0097] 401 Overflow valve

[0098] 402 Filter, including desiccant cartridge

[0099] 404a Regeneration solenoid valve outlet

[0100] 412 Compressor solenoid valve outlet

[0101] 414 Solenoid valve inlet

[0102] 1001 Pneumatic valve system (prior art)

[0103] 1002 Housing part (prior art)

[0104] 1003 Check valve (prior art)

[0105] 1004 Air flow channel (prior art)

[0106] 1004a Inlet of the air flow channel (prior art)

[0107] 1004b Outlet of the air flow channel (prior art)

[0108] 1005 Valve body (prior art)

[0109] 1006 Valve seat (prior art)

[0110] 1007 Spring (prior art)

[0111] 1008 Valve insert (prior art)

[0112] 1019 Gasket (prior art)

[0113] p3 outlet port

[0114] p11 will be connected to the compressor outlet port of the compressor p12 inlet port

[0115] p21 consumer loop outlet

[0116] p22 consumer loop outlet

[0117] p23 consumer loop outlet

[0118] p24 consumer loop outlet

[0119] p25 consumer loop outlet

[0120] p26 consumer loop outlet

Claims

1. A gasket device (9) for a pneumatic valve system (1), the gasket device (9) comprising: a gasket part (19), the gasket part (19) being adapted to be inserted at least into a groove (11) of a flange surface (12) of a first housing part (30); at least one gasket chamber (304; 314, 324, 334, 344), the at least one gasket chamber (304; 314, 324, 334, 344) being for sealingly connecting a passage of a second housing part (2) to be installed; a body part (5), the body part (5) being adapted to be received in a valve seat (6) of the second housing part (2); at least one spring part (7), the at least one spring part (7) connecting the body part (5) and the gasket part (19); wherein, by bending or stretching the at least one spring part (7), the body part (5) is capable of moving relative to the gasket part (19) in the air flow direction; wherein, in an unbiased basic state of the gasket device (9), the body part (5) is positioned above a gasket plane defined by the gasket chamber (304); wherein the gasket device (9) is manufactured as a single part from a flexible elastic material; wherein the gasket device (9) includes three spring parts (7-1, 7-2, 7-3); the three spring parts (7-1, 7-2, 7-3) extend from the gasket part (19) in a symmetric arrangement at different positions, thereby forming a multi-legged bracket (8) for supporting the body part (5) above the gasket part (19) in the unbiased basic state of the gasket device (9).

2. The gasket device (9) according to claim 1, wherein, The gasket device (9) is made of rubber or plastic material.

3. The gasket device (9) according to claim 1 or 2, wherein, The movable body part (5) includes a contact surface for contacting the valve seat (6), and the contact surface includes one of the following forms: - at least partially spherical; - at least partially conical; - at least partially flat; - at least partially in the form of a lip.

4. The spacer device (9) according to claim 1 or 2, wherein, The spring parts (7-1, 7-2, 7-3) have a smaller cross-section compared to the body part (5) and / or the gasket part (19).

5. The gasket device (9) according to claim 1 or 2, wherein the gasket part (19) forms a network of at least two gasket chambers (304; 304, 344; 304, 314), and each of the gasket chambers (304; 304, 344; 304, 314) is provided for sealingly connecting two adjacent air flow channels of the housing parts (30, 2) to be installed.

6. The gasket device (9) according to claim 1 or 2, wherein, The gasket device (9) is a gasket device (9) for a pneumatic valve system (1) of a commercial vehicle.

7. The gasket device (9) according to claim 2, wherein, The gasket device (9) is made only of rubber or plastic material.

8. The gasket device (9) according to claim 3, wherein, The contact surface is a spherical part.

9. A pneumatic valve system (1) for a commercial vehicle, the pneumatic valve system (1) comprising: a first housing part (30), the first housing part (30) including a first flange surface (12) and at least one first air flow channel (104, 114, 124); The gasket device (9) according to any one of the preceding claims, A second housing part (2), the second housing part (2) including a second flange surface (212) and at least one second air flow channel (220), Wherein, the at least one first air flow channel (104, 114, 124) and the at least one second air flow channel (220) are sealingly connected by at least one gasket chamber (304, 314, 324, 334, 344) of the gasket device (9), The gasket part (19) of the gasket device (9) is inserted into at least one groove (11) of the first housing part (30) and at least one groove (211) of the second housing part (2), and The body part (5) is pressed against the valve seat (6) of the second housing part (2), thereby realizing a check valve (3), The check valve (3) allows air to flow in the air flow direction and blocks air flow in the opposite direction.

10. The pneumatic valve system (1) according to claim 9, wherein, The pneumatic valve system (1) is capable of switching between at least two modes, wherein the check valve (3) is blocked in one mode and opened in another mode.

11. The pneumatic valve system (1) according to claim 9 or 10, Among them, The pneumatic valve system is an air supply system for a commercial vehicle, Wherein, the first housing part is an adapter (30), and the second housing part (2) is a solenoid valve device including at least two solenoid valves.

12. The pneumatic valve system (1) according to claim 11, Among them, The gasket device (9) provides a regeneration solenoid valve outlet, a solenoid valve inlet, at least one compressor solenoid valve outlet, and a solenoid valve exhaust channel, Wherein, the check valve (3) is realized at the regeneration solenoid valve outlet.

13. The pneumatic valve system (1) according to claim 11, Among them, The adapter (30) includes a terminal connection (130) not sealed by the gasket device (9).

14. The pneumatic valve system (1) according to claim 11, further comprising a third housing part (32) accommodating at least one solenoid valve, The third housing part (32) is mounted on the back surface (30a) of the adapter (30), and The second housing part (2) is mounted on the front surface (30b) of the adapter (30), and the gasket device (9) is disposed between the front surface (30b) and the second housing part (2).

15. The pneumatic valve system (1) according to claim 9 or 10, wherein, The pneumatic valve system (1) is a pneumatic valve system in an air supply system for a commercial vehicle.

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