阅读说明：本技术 一种车用耐高温进排气阀门 (High-temperature-resistant air intake and exhaust valve for vehicle ) 是由 陈斌 于启洋 王龙 于 2021-08-19 设计创作，主要内容包括：本发明提供一种车用耐高温进排气阀门,包括：阀体组件,其包含的阀体环固定连接进/排气管,且侧壁固定连接有阀体柱；上转轴,其设置于阀体柱内；下轴系组件,其设置在阀体环内侧,且与上转轴对称设置于阀体环圆心的两侧；稳定组件,其套设在上转轴上,用于提供轴向支撑和径向支撑,使上转轴保持稳定；阀板,其由上转轴和下轴系组件固定在阀体环内；限位机构,其包含的限位盘嵌套设置在阀体柱的一端；所述限位盘的一端与上转轴固定连接,另一端固定连接有阀门驱动器。其中,阀门驱动器驱动限位盘旋转,限位盘带动上转轴转动,进而带动阀板和下轴系组件转动,以实现阀门的打开或关闭。本发明具有结构稳定性高、使用寿命长、噪音小的优点。(The invention provides a high temperature resistant intake and exhaust valve for a vehicle, comprising: the valve body assembly comprises a valve body ring which is fixedly connected with the air inlet/outlet pipe, and the side wall of the valve body ring is fixedly connected with a valve body column; an upper rotating shaft disposed in the valve body column; the lower shafting assembly is arranged on the inner side of the valve body ring and is arranged on two sides of the circle center of the valve body ring in symmetry with the upper rotating shaft; the stabilizing component is sleeved on the upper rotating shaft and used for providing axial support and radial support so as to keep the upper rotating shaft stable; the valve plate is fixed in the valve body ring by an upper rotating shaft and a lower shafting assembly; the limiting mechanism comprises a limiting disc which is embedded and sleeved at one end of the valve body column; one end of the limiting disc is fixedly connected with the upper rotating shaft, and the other end of the limiting disc is fixedly connected with a valve driver. Wherein, the spacing dish of valve driver drive is rotatory, and the pivot rotates in the spacing dish drives, and then drives valve plate and lower shafting subassembly and rotate to realize opening or closing of valve. The invention has the advantages of high structural stability, long service life and low noise.)

1. A high temperature resistant intake and exhaust valve for a vehicle, comprising:

the valve body assembly comprises a valve body ring (511), wherein the two sides of the opening of the valve body ring (511) are fixedly connected with the inlet/outlet pipe, and the side wall of the valve body ring (511) is provided with an opening fixedly connected with a valve body column (512);

an upper rotating shaft (7) arranged in the valve body column (512);

a lower shafting assembly disposed inside the valve body ring (511); the upper rotating shaft (7) and the lower shafting assembly are symmetrically arranged on two sides of the circle center of the valve body ring (511);

the stabilizing component is sleeved on the upper rotating shaft (7) and used for providing axial support and radial support so as to keep the upper rotating shaft (7) stable;

the valve plate (8) is matched with the valve body ring (511) in shape and size and is fixed in the valve body ring (511) through an upper rotating shaft (7) and a lower shafting assembly;

the limiting mechanism comprises a limiting disc (1) which is embedded at one end of the valve body column (512) and can rotate around the valve body column (512); one end of the limiting disc (1) is fixedly connected with the upper rotating shaft (7), and the other end of the limiting disc is fixedly connected with a valve driver;

wherein, the spacing dish of valve driver drive (1) is rotatory, and pivot (7) rotation in spacing dish (1) drive, and then drive valve plate (8) and lower shafting subassembly rotate to realize opening or closing of valve.

2. A high temperature resistant air intake and exhaust valve for a vehicle as claimed in claim 1, wherein said valve body assembly further comprises:

the size of the two positioning circular rings (501) is matched with the inner diameter of the valve body ring (511), and the two positioning circular rings are symmetrically arranged at two sides of the opening of the valve body ring (511) so as to realize the fixed connection of the inlet/exhaust pipes at two ends;

and the support frame (504) is fixedly sleeved on the outer side of the valve body column (512) and is used for supporting the valve driver.

3. The high temperature resistant intake and exhaust valve for vehicle of claim 1, wherein the upper shaft (7) is formed by a first cylinder (701) and a second cylinder (702) by co-axial and integral molding; the diameter of the first cylinder (701) is equal to the inner diameter of the valve body column (512), the diameter of the second cylinder (702) is smaller than that of the first cylinder (701), and a space is reserved between the second cylinder (702) and the valve body column (512) and used for arranging a stabilizing assembly; one end of the second column body (702) is fixedly connected with the limiting disc (1), and the limiting disc (1) rotates to drive the upper rotating shaft (7) to rotate.

4. A high temperature resistant intake and exhaust valve for a vehicle as claimed in claim 3, wherein said stabilizing assembly comprises:

the heat insulation bushing (6), a plurality of groups of belleville springs (3), a spherical washer (4) and a shaft sleeve (2) are sequentially sleeved on the second column body (702) from one end fixedly connected with the first column body (701);

the heat insulation lining (6) can effectively prevent high-temperature tail gas from damaging the stabilizing assembly;

the multiple groups of the belleville springs (3) are used in pairs, and each two belleville springs (3) are arranged in opposite directions to form a involutory combined structure;

one surface of the spherical washer (4) contacted with the disc spring (3) is a plane, one surface of the spherical washer contacted with the shaft sleeve (2) is a spherical surface, and the plane of the spherical washer (4) is contacted with the disc spring (3) and then compresses the disc spring (3), so that the disc spring (3) deforms to provide axial force;

the surface of the shaft sleeve (2) in contact with the spherical surface of the spherical washer (4) is a conical surface, the spherical washer (4) extrudes the shaft sleeve (2) by axial force applied by the belleville spring (3), and the spherical washer (4) and the shaft sleeve (2) interact to provide radial support and axial support for the upper rotating shaft (7) so that the upper rotating shaft (7) is kept stable.

5. The vehicle high-temperature-resistant air intake and exhaust valve according to claim 5, wherein the shaft sleeve (2) is fixedly connected with the valve body column (512) through welding or interference fit; the height of the shaft sleeve (2) can be adjusted according to requirements before fixed connection, after the upper rotating shaft (7) is sleeved on the shaft sleeve (2), the shaft sleeve can move along the second column body (702), and the compression amount of the disc spring (3) is adjusted by adjusting the height of the shaft sleeve (2) so as to obtain axial force with different sizes.

6. The high temperature resistant intake and exhaust valve for a vehicle of claim 4, wherein the lower spindle assembly comprises: a lower rotating shaft (9) and a rotating ball (10); the inner side of the valve body ring (511) is also provided with a first groove (505) for placing the lower rotating shaft (9);

the first cylinder (701) and the lower rotating shaft (9) are respectively provided with a first fixing groove (703) and a second fixing groove (901) for clamping the valve plate (8) so that the valve plate (8) is fixed in the valve body ring (511);

a first clamping groove (902) is further formed in one end, opposite to the second fixing groove (901), of the lower rotating shaft (9), and the shape of the first clamping groove is matched with that of the rotating ball (10);

the bottom of the first groove (505) is also provided with a second groove (506) which is conical or spherical and is used for placing the rotating ball (10);

rotatory ball (10) restriction is in the space that first draw-in groove (902) and second recess (506) formed, and axial force is passed through valve plate (8) downwards in multiunit belleville spring (3), and rotatory ball (10) upwards provides the holding power to lower pivot (9), and axial force and holding power interact fix lower pivot (9).

7. The vehicle high-temperature-resistant air inlet and outlet valve according to claim 1, wherein two raised stoppers (502) are further fixedly arranged on the inner side of the valve body ring (511), and the two stoppers (502) are respectively and symmetrically arranged on two sides of the valve plate (8) by taking the circle center of the valve body ring (511) as a symmetry center; and each stop (502) is in contact with the valve plate (8) when the valve plate (8) is closed; wherein, the cross section of each block (502) is in a semicircular arc matched with the valve body ring (511) and is used for blocking a gap between the valve body ring (511) and the valve plate (8); when the valve is closed, the stop block (502) is in contact with the valve plate (8) for limiting, the valve plate (8) is prevented from rotating excessively, and air flow passing through the air inlet/outlet pipe is blocked.

8. The high temperature resistant intake and exhaust valve for vehicle of claim 3,

the limiting mechanism further comprises a limiting block (503) which is fixedly arranged on the outer side wall of the valve body column (512) connected with the limiting disc (1);

a second clamping groove (101) is formed in the side wall of the limiting disc (1), and the limiting block (503) is located in the second clamping groove (101); when the valve plate (8) is opened to a required angle, the limiting disc (1) is blocked by the limiting block (503), so that the opening angle of the valve plate (8) is fixed;

the circle center angle corresponding to the opening of the second clamping groove (101) is 0-90 degrees, and the limiting disc (1) can control the valve plate (8) to rotate between 0-90 degrees.

9. The high temperature resistant intake and exhaust valve for vehicle of claim 5,

the heat insulation lining (6) is made of high-temperature resistant materials such as ceramics or graphite;

the disc spring (3) is made of high-temperature-resistant nickel-based alloy or other high-temperature-resistant stainless steel;

the rotary ball (10) is made of high-temperature-resistant and wear-resistant materials such as ceramics or graphite.

10. The high-temperature-resistant intake and exhaust valve for the vehicle as claimed in claim 2, wherein the valve body ring (511), the valve body column (512), the positioning ring (501) and the support frame (504) are integrally cast from cast stainless steel.

Technical Field

The invention belongs to the field of automobile valves, and particularly relates to a high-temperature-resistant air intake and exhaust valve for a vehicle.

Background

The Exhaust valve is usually installed in an Exhaust system of an internal combustion engine, usually in an EGR (Exhaust Gas recirculation) system of the internal combustion engine or in front of or behind a muffler bag, and the effective path of the Exhaust pipe is adjusted by opening and closing the valve, so as to achieve the purposes of adjusting the back pressure of the Exhaust system, improving the Exhaust efficiency of the internal combustion engine and obtaining a better acoustic effect. But current exhaust valve, because the tail gas temperature is higher, the valve is by the expansion of heating back shafting size, for preventing that the valve shafting is dead by the card, need leave great clearance usually during the shafting subassembly cooperation, this valve plate that just leads to the valve can't effectively maintain stably, under the impact of tail gas, sends the noise, influences the acoustics of vehicle and experiences.

Disclosure of Invention

The invention aims to provide a high-temperature-resistant air intake and exhaust valve for a vehicle, which has the advantages of high structural stability, long service life and low noise.

In order to achieve the above object, the present invention provides a high temperature resistant intake/exhaust valve for a vehicle, comprising: the valve body assembly comprises a valve body ring, an air inlet pipe and an air outlet pipe, wherein the two sides of an opening of the valve body ring are fixedly connected with the air inlet/outlet pipe, and an opening is formed in the side wall of the valve body ring and is fixedly connected with a valve body column; the upper rotating shaft is arranged in the valve body column; the lower shafting assembly is arranged on the inner side of the valve body ring; the upper rotating shaft and the lower shafting assembly are symmetrically arranged on two sides of the circle center of the valve body ring; the stabilizing component is sleeved on the upper rotating shaft and used for providing axial support and radial support so as to keep the upper rotating shaft stable; the valve plate is matched with the valve body ring in shape and size and is fixedly connected with the upper rotating shaft and the lower shafting assembly in the valve body ring; the limiting mechanism comprises a limiting disc which is embedded and sleeved at one end of the valve body column and can rotate around the valve body column; one end of the limiting disc is fixedly connected with the upper rotating shaft, and the other end of the limiting disc is fixedly connected with a valve driver. Wherein, the spacing dish of valve driver drive is rotatory, and the pivot rotates in the spacing dish drives, and then drives valve plate and lower shafting subassembly and rotate to realize opening or closing of valve.

Wherein, the valve body subassembly still includes: the size of the two positioning circular rings is matched with the inner diameter of the valve body ring, and the two positioning circular rings are symmetrically arranged on two sides of the opening of the valve body ring so as to realize the fixed connection of the air inlet/exhaust pipes at two ends; and the support frame is fixedly sleeved on the outer side of the valve body column and used for supporting the valve driver.

The upper rotating shaft is designed by coaxially and integrally molding a first cylinder and a second cylinder; the diameter of the first cylinder is equal to the inner diameter of the valve body column, and the diameter of the second cylinder is smaller than that of the first cylinder, so that a space is reserved between the second cylinder and the valve body column and used for arranging a stabilizing assembly; one end of the second column body is fixedly connected with the limiting disc, and the upper rotating shaft is driven to rotate by the rotation of the limiting disc.

Wherein the stabilizing assembly comprises: the heat insulation bush, the multiple groups of belleville springs, the spherical washer and the shaft sleeve are sequentially sleeved on the second cylinder from one end fixedly connected with the first cylinder; the heat insulation lining can effectively prevent high-temperature tail gas from damaging the stabilizing assembly; the multiple groups of disc springs are used in pairs, and each two disc springs are arranged in opposite directions to form an involutory combined structure; the surface of the spherical washer, which is contacted with the disc spring, is a plane, the surface of the spherical washer, which is contacted with the shaft sleeve, is a spherical surface, and the plane of the spherical washer, which is contacted with the disc spring, compresses the disc spring to enable the disc spring to deform to provide axial force; the surface of the shaft sleeve, which is in contact with the spherical surface of the spherical washer, is a conical surface, the spherical washer extrudes the shaft sleeve by the axial force exerted by the belleville spring, and the spherical washer and the shaft sleeve interact to provide radial support and axial support for the upper rotating shaft, so that the upper rotating shaft is kept stable.

The shaft sleeve is fixedly connected with the valve body column through welding or interference fit; the height of the shaft sleeve can be adjusted according to requirements before fixed connection, the shaft sleeve can move along the second column after being sleeved on the upper rotating shaft, and the compression amount of the disc spring is adjusted by adjusting the height of the shaft sleeve so as to obtain axial forces with different sizes.

Wherein the lower spindle assembly comprises: a lower spindle and a rotary ball; the inner side of the valve body ring is also provided with a first groove for placing the lower rotating shaft; the upper rotating shaft and the lower rotating shaft are respectively provided with a first fixing groove and a second fixing groove which are used for clamping the valve plate so that the valve plate is fixed in the valve body ring; a first clamping groove is formed in one end, opposite to the second fixing groove, of the lower rotating shaft, and the shape of the first clamping groove is matched with that of the rotating ball; the bottom of the first groove is also provided with a second groove which is conical or spherical and is used for placing the rotating ball; the rotatory ball restriction is in the space that first draw-in groove and second recess formed, and multiunit belleville spring passes through the valve plate and transmits axial force downwards, and the rotatory ball provides the holding power to the downthehole axle is upwards, and axial force and holding power interact fix downthehole axle down.

Preferably, the inner side of the valve body ring is also fixedly provided with two raised check blocks, and the two check blocks are respectively and symmetrically arranged on two sides of the valve plate by taking the circle center of the valve body ring as a symmetric center; and when the valve plate is closed, each stop block is contacted with the valve plate; the cross section of each stop block is in a semicircular arc matched with the valve body ring and used for blocking a gap between the valve body ring and the valve plate; when the valve is closed, the stop block is in contact with the valve plate for limiting, the valve plate is prevented from excessively rotating, and air flow passing through the air inlet/outlet pipe is blocked.

The limiting mechanism further comprises a limiting block which is fixedly arranged on the outer side wall of the valve body column connected with the limiting disc; a second clamping groove is formed in the side wall of the limiting disc, and the limiting block is located in the second clamping groove; when the valve plate is opened to a required angle, the limiting disc is blocked by the limiting block, so that the valve plate is fixed in the opening angle.

The circle center angle corresponding to the opening of the second clamping groove is 0-90 degrees, and the limiting disc can control the valve plate to rotate between 0-90 degrees.

Preferably, the heat insulation lining is made of high-temperature resistant materials such as ceramics or graphite; the disc spring is made of high-temperature-resistant nickel-based alloy or other high-temperature-resistant stainless steel; the rotary ball is made of high-temperature-resistant and wear-resistant materials such as ceramics or graphite.

Preferably, the valve body ring, the valve body column, the positioning ring and the support frame are integrally cast and formed by cast stainless steel.

In summary, compared with the prior art, the high temperature resistant intake and exhaust valve for the vehicle provided by the invention has the following beneficial effects:

1. the structure is compact, the stabilizing component and the lower spindle component are in clearance fit, the processing is simple, and the assembly is simple;

2. the valve has few welding points and small deformation of the valve body, and can effectively maintain the precision of a shafting assembly, so that the valve plate can be effectively attached to the stop block when the valve is closed, the air flow can be better blocked, and the effects of regulating back pressure and changing the flow direction of the air flow are achieved;

3. the main material of the valve is 304 stainless steel, so that the valve can work in high-temperature tail gas for a long time and keep the dimensional stability; the parts which are subjected to friction are made of ceramics, so that the situation of occlusion with metal at high temperature can be prevented, and the parts which are subjected to friction are in line contact, so that the friction can be effectively reduced, and the service life of the valve is prolonged;

4. different from the traditional exhaust valve, the invention does not use a cylindrical shaft sleeve to fix the shaft system, but uses the matching of the spherical surface and the conical surface to provide axial and radial support, and the structure can effectively reduce the axial and radial play of the shaft system and improve the stability of the shaft system;

5. the shafting is provided with supporting force by the deformation of the disc spring, and the shafting does not generate rigid impact when dealing with airflow impact, automobile vibration, road bumping and other collisions, so that parts of the shafting can be effectively protected;

6. the top of the upper rotating shaft is a spherical-conical surface sealing structure similar to high-pressure sealing, and the linear contact structure can effectively lock airflow to play a certain sealing role, effectively reduce the impact of high-temperature airflow on a valve driver above, reduce the temperature of the valve driver and play a role in protecting the valve driver.

Drawings

FIG. 1 is a sectional view of the high temperature resistant intake/exhaust valve for a vehicle according to the present invention;

FIG. 2 is a sectional view of the structure of the stabilizing assembly of the high temperature resistant intake and exhaust valve for vehicle of the present invention;

FIG. 3 is a bottom view of the high temperature resistant intake/exhaust valve for a vehicle according to the present invention;

FIG. 4 is an isometric view of the high temperature resistant intake and exhaust valve for a vehicle of the present invention shown open;

fig. 5 is an axial side view of the vehicle high temperature resistant intake/exhaust valve of the present invention when closed.

Detailed Description

The technical solution, the structural features, the achieved objects and the effects of the embodiments of the present invention will be described in detail with reference to fig. 1 to 5 of the embodiments of the present invention.

It should be noted that the drawings are simplified in form and not to precise scale, and are only used for convenience and clarity to assist in describing the embodiments of the present invention, but not for limiting the conditions of the embodiments of the present invention, and therefore, the present invention is not limited by the technical spirit, and any structural modifications, changes in the proportional relationship, or adjustments in size, should fall within the scope of the technical content of the present invention without affecting the function and the achievable purpose of the present invention.

It is to be noted that, in the present invention, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The present invention provides a high temperature resistant intake and exhaust valve for a vehicle, as shown in fig. 1, comprising: the valve body assembly comprises a valve body ring 511, wherein the two sides of the opening of the valve body ring 511 are used for fixedly connecting an inlet/outlet pipe, and the side wall of the valve body ring 511 is provided with an opening fixedly connected with a valve body column 512; the upper rotating shaft 7 is arranged in the valve body column 512 through an opening on the side wall of the valve body ring 511; a lower shafting assembly disposed inside the valve body ring 511; the upper rotating shaft 7 and the lower shafting assembly are symmetrically arranged on two sides of the circle center of the valve body ring 511; the stabilizing assembly is sleeved on the upper rotating shaft 7 and used for providing axial support and radial support so as to keep the upper rotating shaft 7 stable; the valve plate 8 is matched with the valve body ring 511 in shape and size and is fixed in the valve body ring 511 by the upper rotating shaft 7 and the lower shafting assembly; the limiting mechanism comprises a limiting disc 1 which is embedded at one end of the valve body column 512 and can rotate around the valve body column 512; one end of the limiting disc 1 is fixedly connected with the upper rotating shaft 7, and the other end of the limiting disc is fixedly connected with a valve driver; wherein, the spacing dish of valve driver drive 1 rotation, and pivot 7 rotates in spacing dish 1 drive, and then drives valve plate 8 and lower shafting subassembly and rotate to realize opening or closing of valve.

Specifically, as shown in fig. 4 and 5, the valve body assembly further includes: two positioning rings 501, the size of which is matched with the inner diameter of the valve body ring 511, and which are symmetrically arranged at two sides of the opening of the valve body ring 511 to realize the fixed connection of the inlet/outlet pipes at two ends; a support bracket 504, secured to the outside of the valve body column 512, for supporting the valve actuator.

Specifically, as shown in fig. 2, the upper rotating shaft 7 is formed by coaxially and integrally molding a first cylinder 701 and a second cylinder 702; the diameter of the first cylinder 701 is equal to the inner diameter of the valve body column 512, the diameter of the second cylinder 702 is smaller than that of the first cylinder 701, and a space is reserved between the second cylinder 702 and the valve body column 512 and used for arranging a stabilizing component; one end of the first column 701 is further provided with a first fixing groove 703 for clamping the valve plate 8; one end of the second cylinder 702 is fixedly connected with the limiting disc 1 so as to drive the upper rotating shaft 7 to rotate when the limiting disc 1 rotates.

Specifically, as shown in fig. 1 and 2, the stabilizing assembly includes: the heat insulation bush 6, the multiple groups of belleville springs 3, the spherical washer 4 and the shaft sleeve 2 are sequentially sleeved on the second column body 702 from one end fixedly connected with the first column body 701; the heat insulation lining 6 can effectively prevent high-temperature tail gas from damaging other components of the stabilizing assembly arranged above the heat insulation lining 6; the multiple groups of the belleville springs 3 are used in pairs, and each two belleville springs 3 are arranged in opposite directions to form a involution combination; one surface of the spherical washer 4, which is in contact with the disc spring 3, is a plane, one surface of the spherical washer 4, which is in contact with the shaft sleeve 2, is a spherical surface, and the plane of the spherical washer 4, which is in contact with the disc spring 3, compresses the disc spring 3 to enable the disc spring 3 to deform to provide an axial force; the surface of the shaft sleeve 2, which is in contact with the spherical surface of the spherical washer 4, is a conical surface, the spherical washer 4 is extruded on the shaft sleeve 2 by the axial force exerted by the belleville spring 3, and the spherical washer 4 interacts with the shaft sleeve 2 to provide radial support and axial support for the upper rotating shaft 7, so that the upper rotating shaft is kept stable.

Further, the outer side wall of the shaft sleeve 2 is fixedly connected with the inner side wall of the valve body column 512 by welding; with the axial dimension of the stabilizing assembly well controlled, the sleeve 2 may be fixedly attached to the valve body post 512 by an interference fit. Furthermore, the height of the shaft sleeve 2 can be adjusted according to requirements before the shaft sleeve 2 is completely fixed, after the shaft sleeve 2 is sleeved on the upper rotating shaft 7, the shaft sleeve can move along the second column 702, and the compression amount of the disc spring 3 is adjusted by adjusting the height of the shaft sleeve 2, so that axial forces with different sizes are obtained; when the exhaust valve is applied to a large-displacement engine, the compression amount of the disc spring 3 can be increased to improve the axial force and further improve the stability of a shafting because the large-displacement engine has large tail gas amount and strong impact force; when the exhaust valve is applied to a small-displacement engine, the tail gas impact force of the small-displacement engine is relatively small, so that the compression amount of the disc spring 3 can be reduced, the axial force is reduced, and the service life of the valve is prolonged.

Specifically, as shown in fig. 1, the lower spindle assembly includes: a lower spindle 9 and a rotary ball 10; the inner side of the valve body ring 511 is further provided with a first groove 505 for placing the lower rotating shaft 9; one end of the lower rotating shaft 9 is provided with a second fixing groove 901 for clamping the valve plate 8; a first clamping groove 902 is formed in one end, opposite to the second fixing groove 901, of the lower rotating shaft 9, and the shape of the first clamping groove is matched with that of the rotating ball 10; the bottom of the first groove 505 is further provided with a second groove 506, which is conical or spherical (in this embodiment, spherical) and is used for placing the rotary ball 10; the valve plate 8 is fixed in the valve body ring 511 through a first fixing groove 703 on the upper rotating shaft 7 and a second fixing groove 901 on the lower rotating shaft 9; the rotary ball 10 is limited in a space formed by the first clamping groove 902 and the second groove 506, the plurality of groups of disc springs 3 transmit axial force downwards through the valve plate 8, the rotary ball 10 provides supporting force upwards for the lower rotating shaft 9, the axial force and the supporting force interact to fix the lower rotating shaft 9, and the lower rotating shaft 9 cannot move axially and radially.

Further, as shown in fig. 3 and 4, two raised stoppers 502 are further fixedly disposed on the inner side of the valve body ring 511, and the two stoppers 502 are respectively symmetrically disposed on two sides of the valve plate 8 with the circle center of the valve body ring 511 as the symmetric center; and each said stop 502 is in contact with the valve plate 8 when the valve plate 8 is closed; wherein, the cross-sectional shape of each stopper 502 is a semicircular arc matched with the valve body ring 511, that is, the cross-sectional circle formed by the two stoppers 502 is equal to the inner diameter cross-sectional circle of the valve body ring 511, so that when the valve plate 8 is closed, the stopper 502 can block the gap between the valve body ring 511 and the valve plate 8, and prevent the air flow from passing through the gap; (ii) a When the valve is closed, the stopper 502 is in contact with the valve plate 8 to limit and block a gap between the valve plate 8 and the valve body ring 511, so that the valve plate 8 is prevented from rotating excessively on the one hand, and the valve plate 8 and the stopper 502 act together to block airflow passing through the air inlet/outlet pipe on the other hand.

Specifically, as shown in fig. 5, the limiting mechanism further includes a limiting block 503, which is fixedly disposed on an outer sidewall of the valve body column 512 connected to the limiting disc 1; a second clamping groove 101 is formed in the side wall of the limiting disc 1, and the limiting block 503 is located in the second clamping groove 101; when the valve plate 8 is opened to a required angle, the limiting disc 1 is blocked by the limiting block 503 to fix the opening angle of the valve plate 8; the angle of the circle center corresponding to the opening of the second clamping groove 101 is 0-90 degrees, namely, the limiting disc 1 can control the valve plate 8 to rotate between 0-90 degrees according to the requirements of users and different connection modes of the valve driver.

Specifically, in order to improve the high-temperature tail gas resistance of the valve, the heat insulation lining 6 is made of high-temperature resistant materials such as ceramic or graphite and can work in tail gas at 650 ℃ for a long time, the ceramic materials are made of high-hardness and wear-resistant materials, the graphite materials have the self-lubricating effect, and the service life of the valve can be further prolonged.

Specifically, the shafting assembly is stabilized mainly by the compression force provided by the disc spring 3, the disc spring 3 is made of high-temperature-resistant nickel-based alloy or other high-temperature-resistant stainless steel, so that serious compression force loss can not occur at the high temperature of 650 ℃, and the valve can be ensured to keep the shafting stable under the impact of high-temperature tail gas.

Furthermore, the rotary ball 10 is made of high temperature resistant and wear resistant materials such as ceramic or graphite, and the shape of the rotary ball is a sphere, so that the rotary ball can be conveniently polished to be bright, the surface roughness is improved, and the wear resistance and the impact resistance are further improved.

Furthermore, the valve body assembly is integrally cast by cast stainless steel (304 stainless steel is used in this embodiment), that is, the valve body ring 511, the valve body column 512, the positioning ring 501, and the support frame 504 are integrally cast, so that the processing cost is relatively low, the 304 stainless steel can maintain the corrosion resistance at high temperature for a long time, the welding performance is good, and the valve can be stably mounted on the exhaust pipe.

In conclusion, compared with the existing intake and exhaust valve for the vehicle, the high-temperature-resistant intake and exhaust valve for the vehicle provided by the invention has the advantages of compact structure, high structural stability, long service life, low noise and the like.

While the present invention has been described in detail with reference to the preferred embodiments, it should be understood that the above description should not be taken as limiting the invention. Various modifications and alterations to this invention will become apparent to those skilled in the art upon reading the foregoing description. Accordingly, the scope of the invention should be determined from the following claims.