阅读说明：本技术 超高温高压的大口径止回阀 (Ultrahigh-temperature high-pressure large-caliber check valve ) 是由 曹雪勤 陈冬冬 于 2019-10-31 设计创作，主要内容包括：本发明涉及止回阀技术领域,且公开了超高温高压的大口径止回阀,包括内部设置有导流腔的阀体和固定连接在阀体上的限位杆。该超高温高压的大口径止回阀,通过半球形阀瓣和第一弧形面的配合使用,能够增大阀体与阀瓣之间的接触面积,使得半球形阀瓣在承受较大的介质倒流压强时不易产生形变,同时半球形阀瓣的内侧面能够在介质倒流时产生压强,压紧半球形阀瓣,提高止回阀中阀体与阀瓣接触的密封性,而且半球形阀瓣与阀体之间直接接触密封,使得半球形阀瓣能够将介质的热量及时传导给阀体直接进行散热,防止半球形阀瓣因受热而产生较大的形变量,进而该止回阀能够在超高温高压的条件下使用。(The invention relates to the technical field of check valves, and discloses an ultrahigh-temperature and high-pressure large-caliber check valve which comprises a valve body and a limiting rod, wherein a flow guide cavity is formed in the valve body, and the limiting rod is fixedly connected to the valve body. This highly compressed heavy-calibre check valve of ultra-temperature, cooperation through hemisphere valve clack and first arcwall face is used, can increase the area of contact between valve body and the valve clack, make the hemisphere valve clack be difficult for producing deformation when bearing great medium refluence pressure, the medial surface of hemisphere valve clack can produce pressure when the medium refluxes simultaneously, compress tightly the hemisphere valve clack, improve the leakproofness of valve body and valve clack contact in the check valve, and direct contact is sealed between hemisphere valve clack and the valve body, make the hemisphere valve clack can in time conduct the heat of medium for the valve body directly dispels the heat, prevent that the hemisphere valve clack from producing great deformation volume because of being heated, and then this check valve can use under the highly compressed.)

1. High-pressure heavy-calibre check valve of ultra-temperature is provided with valve body (2) and gag lever post (3) of fixed connection on valve body (2) of water conservancy diversion chamber (1) including inside, its characterized in that: hold-down mechanism (4) have been cup jointed in the inside activity of valve body (2), seal cover (5) have been cup jointed to the internal thread that valve body (2) are located hold-down mechanism (4) below, hold-down mechanism (4) extend the outside top fixed cover of valve body (2) have connect inside and gag lever post (3) the middle part carry out the activity and cup joint closing mechanism (6), the top cover of water conservancy diversion chamber (1) is equipped with the sealed pad of buffering (7) that are located closing mechanism (6) below.

2. The large-caliber check valve for ultra-high temperature and high pressure according to claim 1, wherein: sealing mechanism (6) including fixed the cup jointing on hold-down mechanism (4) and inside and the outer wall of gag lever post (3) carry out the mount (61) that the activity cup jointed, the inside at mount (61) both ends all is fixed through dead lever (62) and is cup jointed hemisphere valve clack (63) that are located the sealed (7) top of buffering.

3. The large-caliber check valve for ultra-high temperature and high pressure according to claim 1, wherein: the top of water conservancy diversion chamber (1) is provided with the first arcwall face of the lateral surface looks adaptation of hemisphere valve clack (63) and the mounting groove of the looks adaptation of sealed pad (7) of buffering.

4. The large-caliber check valve for ultra-high temperature and high pressure according to claim 1, wherein: the inside of cushion seal pad (7) is provided with the second arcwall face with hemisphere valve clack (63) looks adaptation, the material of cushion seal pad (7) is high temperature resistant material.

5. The large-caliber check valve for ultra-high temperature and high pressure according to claim 1, wherein: hold-down mechanism (4) including activity cup joint pull rod (41) inside valve body (2), the one end of pull rod (41) and the inside fixed cup joint of mount (61), and the other end joint of pull rod (41) has buckle (42) that are located seal cover (5) inboard, the side of buckle (42) is connected with one side transmission of valve body (2) through spring (43) of suit on pull rod (41).

6. The large-caliber check valve for ultra-high temperature and high pressure according to claim 5, wherein: the interior of the pull rod (41) is set to be a closed hollow pipe at one end.

Technical Field

The invention relates to the technical field of check valves, in particular to a large-caliber check valve with ultrahigh temperature and high pressure.

Background

The check valve is a valve which automatically opens and closes a valve clack by medium flowing, is used for preventing medium from flowing backwards, and is also called a check valve, a one-way valve, a reflux valve and a back pressure valve; the check valve belongs to an automatic valve and mainly has the functions of preventing medium from flowing backwards, preventing the pump and a driving motor from rotating reversely and preventing the medium in a container from being discharged.

The leakproofness of contact between valve body and the valve clack is relatively poor among the partial check valve that has now, area of contact between valve clack and the valve body is less, under the condition of medium refluence, produce pressure between medium and the valve clack, the valve clack produces deformation easily, lead to the medium to leak, adopt sealed the pad to seal up more between valve clack and the valve body, when the medium temperature is higher, sealed pad is heated and is produced deformation easily, the heat that the valve clack was absorbed also can not in time conduct and scatter and disappear, make the check valve can not use under the condition of superhigh temperature high pressure.

Disclosure of Invention

Aiming at the defects of the background art, the invention provides a large-caliber check valve with ultrahigh temperature and high pressure, which solves the problems in the background art.

The invention provides the following technical scheme: high-pressure heavy-calibre check valve of superhigh temperature is including inside valve body and the gag lever post of fixed connection on the valve body that is provided with the water conservancy diversion chamber, hold-down mechanism has been cup jointed in the inside activity of valve body, the inside screw thread that the valve body is located the hold-down mechanism below has cup jointed the seal cover, hold-down mechanism extends the outside top fixed cup joint of valve body has inside and the gag lever post the middle part carry out the activity and cup joint the closing mechanism, the top cover in water conservancy diversion chamber is equipped with the buffer sealing pad that is located.

Preferably, the closing mechanism includes that the fixed frame that fixedly cup joints on hold-down mechanism and inside and gag lever post outer wall carry out the activity and cup joint, the inside at fixed frame both ends all cup joints the hemisphere valve clack that is located the sealed top of buffering through the dead lever is fixed.

Preferably, the top end of the diversion cavity is provided with a first arc-shaped surface matched with the outer side surface of the hemispherical valve clack and a mounting groove matched with the buffer sealing gasket.

Preferably, the inside of the buffer sealing gasket is provided with a second arc-shaped surface matched with the hemispherical valve clack, and the buffer sealing gasket is made of high-temperature-resistant materials.

Preferably, the pressing mechanism comprises a pull rod movably sleeved inside the valve body, one end of the pull rod is fixedly sleeved inside the fixing frame, the other end of the pull rod is connected with a buckle located on the inner side of the sealing sleeve in a clamping mode, and the side face of the buckle is in transmission connection with one side of the valve body through a spring sleeved on the pull rod.

Preferably, the interior of the pull rod is provided with a closed hollow tube at one end.

The invention has the following beneficial effects:

1. this highly compressed heavy-calibre check valve of ultra-temperature, cooperation through hemisphere valve clack and first arcwall face is used, can increase the area of contact between valve body and the valve clack, make the hemisphere valve clack be difficult for producing deformation when bearing great medium refluence pressure, the medial surface of hemisphere valve clack can produce pressure when the medium refluxes simultaneously, compress tightly the hemisphere valve clack, improve the leakproofness of valve body and valve clack contact in the check valve, and direct contact is sealed between hemisphere valve clack and the valve body, make the hemisphere valve clack can in time conduct the heat of medium for the valve body directly dispels the heat, prevent that the hemisphere valve clack from producing great deformation volume because of being heated, and then this check valve can use under the highly compressed.

2. This highly compressed heavy-calibre check valve of ultra-temperature, can be spacing to the mount through the gag lever post, make the hemisphere valve clack can stably move under the effort of medium pressure and spring, prevent that the hemisphere valve clack from leading to the pull rod to produce deformation at the in-process that moves because of single atress, influence the leakproofness between hemisphere valve clack and the first arcwall face, utilize the pull rod can make the pressure that the medium refluence produced can act on the medial surface of pull rod, make the pull rod can compress tightly the hemisphere valve clack through the mount under the effect of pressure, improve the leakproofness of hemisphere valve clack and first arcwall face contact.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a fixing frame according to the present invention;

FIG. 3 is a schematic view of the valve body of the present invention;

FIG. 4 is a schematic view of a cushion gasket in accordance with the present invention;

FIG. 5 is a schematic view of the hold-down mechanism of the present invention;

fig. 6 is a cross-sectional view of a tie rod of the present invention.

In the figure: 1. a flow guide cavity; 2. a valve body; 3. a limiting rod; 4. a hold-down mechanism; 41. a pull rod; 42. buckling; 43. a spring; 5. sealing sleeves; 6. a sealing mechanism; 61. a fixed mount; 62. fixing the rod; 63. a hemispherical valve clack; 7. a cushion gasket.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The drawings in the embodiments of the invention: the different types of cross-sectional lines in the figures are not labeled according to the national standards, do not require the material of the components, and distinguish the cross-sectional views of the components in the figures.

Referring to fig. 1-6, the large-diameter check valve with ultra-high temperature and high pressure comprises a valve body 2 provided with a flow guide cavity 1 inside and a limiting rod 3 fixedly connected to the valve body 2, a pressing mechanism 4 is movably sleeved inside the valve body 2, a sealing sleeve 5 is sleeved on an internal thread of the valve body 2 below the pressing mechanism 4, a sealing mechanism 6 is fixedly sleeved on the top end of the pressing mechanism 4 extending out of the valve body 2, the inside of the sealing mechanism is movably sleeved with the middle part of the limiting rod 3, and a buffer sealing gasket 7 located below the sealing mechanism 6 is sleeved on the top end of the flow guide cavity 1.

Wherein, the closing mechanism 6 includes that the fixed frame 61 that fixedly cup joints on hold-down mechanism 4 and inside and gag lever post 3's outer wall carry out the activity and cup joint, and the inside at fixed frame 61 both ends all has fixed the cup jointing half ball valve clack 63 that is located the buffer seal pad 7 top through dead lever 62.

Wherein, the top of water conservancy diversion chamber 1 is provided with the first arcwall face of the lateral surface looks adaptation of hemisphere valve clack 63 and the mounting groove of 7 looks adaptations of cushion packing.

Wherein, the inside of the cushion seal 7 is provided with the second arcwall face with hemisphere valve clack 63 looks adaptation, and the material of the cushion seal 7 is high temperature resistant material, utilizes the cushion seal 7 can form the buffering to the reseing of hemisphere valve clack 63, prevents to produce the striking between hemisphere valve clack 63 and the first arcwall face, causes the wearing and tearing of hemisphere valve clack 63 and first arcwall face contact surface, influences the leakproofness between hemisphere valve clack 63 and the first arcwall face.

Wherein, hold-down mechanism 4 includes that the activity cup joints the pull rod 41 in valve body 2 inside, and the one end of pull rod 41 and the inside fixed cup joint of mount 61, and the other end joint of pull rod 41 has the buckle 42 that is located seal cover 5 inboard, and the side of buckle 42 is connected with one side transmission of valve body 2 through the spring 43 of suit on pull rod 41.

Wherein, the interior of the pull rod 41 is provided as a hollow tube with one end closed.

In operation of a check valve, a medium flows into the inner guide cavity 1 of the valve body 2, an outer side of the hemispherical valve flap 63 is formed by , an axle half-spherical valve flap 63 is lifted by an axle half-spherical valve flap 63, open of the valve flap, the hemispherical valve flap 63 is moved simultaneously by the mount 61 or/and/or the pull rod 41 along the axis of the limit shaft 3, the pull rod 41 is moved simultaneously by either locking 42 or spring 43, the lever 41 is positioned in front of the spring 43, the objective of the spring is rather than half, the acting force of the spring 41 is located by the spring 43, the objective of the invention, the axle 41 simultaneously by the hemispherical seal 62 or the half-spherical valve flap 63 is completely mounted on the support of the half-spherical valve flap 3919, the seal flap is provided for buffering the valve flap 34, the valve flap is to be mounted on the half-spherical guide cavity 1, or the half-spherical valve flap 19 is provided for the objective of the exhaust. Completing the articulating of the valve flap, here, chinese wolf fruit half ball valve flap 63 and inner side face connection of pull rod 41 form an pressure, half ball valve flap 63 and pull rod 41 under the action of pressure, half ball valve flap 63 for 63 tension, so that the connection sealing property of half ball valve flap 63 in the first arc face is improved.

It is noted that, herein, relational terms such as first and second, and the like may be 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.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.