阅读说明：本技术 一种重锤杠杆式安全阀 (Weight lever type safety valve ) 是由 王欣 于 2019-01-15 设计创作，主要内容包括：本发明公开了一种重锤杠杆式安全阀,涉及泄压装置技术领域,具体为包括阀罩,转动连接于阀罩顶部的杠杆,活动安装于阀罩内部的阀瓣,固定安装于阀罩内部的导向座和阀座,固定套接于阀瓣外表面的导向盘和活动连接于杠杆底部的阀杆,所述阀罩包括泄压腔,与泄压腔相连通的泄压口,与泄压腔相连通的介质入口和固定连接于泄压腔顶部的阀盖。通过设置阀瓣和阀座配合,当异物进入密封面并泄留在密封面表面,阀瓣内的阀球下表面与异物接触,泄压后,利用杠杆及重锤的压力作用使阀球与异物抵触,导致阀球受力不均匀而滚动,进一步带动异物沿密封面落入连通腔,有效提高锅炉等压力容器的运行效率,降低运行成本,减小安全隐患。(The invention discloses a heavy hammer lever type safety valve, which relates to the technical field of pressure relief devices and particularly comprises a valve cover, a lever, a valve clack, a guide seat and a valve seat, wherein the lever is rotatably connected to the top of the valve cover, the valve clack is movably arranged in the valve cover, the guide seat and the valve seat are fixedly arranged in the valve cover, the guide disk is fixedly sleeved on the outer surface of the valve clack in a fixing mode, the valve rod is movably connected to the bottom of the lever, the valve cover comprises a pressure relief cavity, a pressure relief opening communicated with the pressure relief cavity, a medium inlet communicated with the pressure relief cavity and a valve. Through setting up valve clack and disk seat cooperation, get into sealed face and let out and stay on sealed face surface when the foreign matter, valve ball lower surface and foreign matter contact in the valve clack, after the pressure release, utilize the pressure action of lever and weight to make valve ball and foreign matter contradict, lead to the valve ball atress inhomogeneous and roll, further drive the foreign matter and fall into the intercommunication chamber along sealed face, effectively improve pressure vessel's such as boiler operating efficiency, reduce running cost, reduce the potential safety hazard.)

1. The utility model provides a weight lever relief valve, includes valve bonnet (1), rotates lever (2) of connecting in valve bonnet (1) top, movable mounting in valve clack (3) of valve bonnet (1) inside, fixed mounting in guide holder (4) and disk seat (5) of valve bonnet (1) inside, fixed cup connect in guide disc (6) and the valve rod (7) of swing joint in lever (2) bottom of valve clack (3) surface, its characterized in that: the valve cover (1) comprises a pressure relief cavity (11), a pressure relief opening (12) communicated with the pressure relief cavity (11), a medium inlet (13) communicated with the pressure relief cavity (11) and a valve cover (14) fixedly connected to the top of the pressure relief cavity (11), one end of a lever (2) is rotatably connected with a support (21), the bottom end of the support (21) is fixedly connected with the valve cover (14), a guide frame (22) is movably sleeved on the outer surface of the lever (2), the bottom end of the guide frame (22) is fixedly connected with the valve cover (14), an adjusting frame (23) and a fixing frame (24) are respectively and fixedly installed on the outer surface of the lever (2), a heavy hammer (25) is fixedly installed at the bottom of the fixing frame (24), the valve flap (3) comprises a shell (31), a sealing cover (32) fixedly connected to the bottom of the shell (31) and a valve ball (33) connected to the inside of the shell (31) in a rolling, the bottom of the valve ball (33) penetrates through and extends to the bottom of the sealing cover (32), the valve rod (7) penetrates through the valve cover (14) and the connecting disc (41) and extends to the inside of the pressure relief cavity (11), the guide seat (4) comprises the connecting disc (41) fixedly connected with the valve cover (14) and a guide rail (42) fixedly connected to the bottom of the connecting disc (41), a communication cavity (52) is formed in the valve seat (5), a sealing surface (51) is formed in the inner side wall of the valve seat (5), the outer surface of the valve ball (33) located at the bottom of the sealing cover (32) is abutted to the sealing surface (51), the communication cavity (52) is communicated with the medium inlet (13), a guide rod (61) is fixedly connected to the outer surface of the guide disc (6), the guide rod (61) is slidably connected with the guide rail (42), one end of the valve rod (7) located in the pressure relief cavity (11) is fixedly connected with the top of the shell (31), the valve rod (7) is movably connected with the valve cover (14) and the connecting disc (41); a rolling cover (310) and a baffle (312) are fixedly installed in the shell (31) respectively, the baffle (312) is positioned at the bottom of the rolling cover (310), and balls (311) are connected to the inner wall of the rolling cover (310) in a rolling manner; the valve ball (33) comprises a filling cavity (330) and a cavity (331), and the cavity (331) occupies about one third of the volume of the valve ball (33); the number of the balls (311) is thirteen, and the thirteen balls (311) are in rolling connection with the outer surface of the valve ball (33) positioned inside the shell (31); the sealing surface (51) comprises a fitting surface and a downward extending disengaging surface, wherein the fitting surface is fitted with the lower surface of the valve ball (33), and the cross section of the disengaging surface is in an arc shape.

2. The weight lever type safety valve as claimed in claim 1, wherein: the outer surface of the valve ball (33) is provided with friction grains which are uniformly arranged in a grid shape, and the grid area of the friction grains is 10 square millimeters.

3. The weight lever type safety valve as claimed in claim 1, wherein: the guided way (42) includes the deflector of two slope in opposite directions, and the inclination of deflector is 10 degrees, and the clearance value of two deflector bottoms is less than the diameter value of guide bar (61), and the clearance value at two deflector tops is greater than the diameter value of guide bar (61).

Technical Field

The invention relates to the technical field of pressure relief devices, in particular to a heavy hammer lever type safety valve.

Background

The heavy hammer lever type safety valve is a pressure relief device which is installed on a pressure container for ensuring the safe operation of the pressure container, when the pressure of the pressure container is overloaded, the medium pressure pushes a valve clack to open so as to discharge a medium, after the pressure is relieved, the valve clack is automatically closed by utilizing the heavy hammer and the lever action, the opening pressure is adjusted by changing the mass of the heavy hammer and the lever arm of force, and the heavy hammer lever type safety valve is suitable for occasions of high temperature and the like, particularly boilers and high temperature containers.

The existing heavy hammer lever type safety valve is overloaded when the pressure of a pressure container is applied, the valve clack is opened to discharge a medium, foreign matters are doped in the medium of the pressure container such as a boiler, under the pushing action of the medium pressure, the foreign matters can enter a sealing surface and are leaked and remained on the surface of the sealing surface, a gap exists between the valve clack and a valve seat, the safety valve is leaked, the operation efficiency of the pressure container such as the boiler is reduced, the operation cost is increased, the leakage is carried out for a long time, the inner sealing surface of the safety valve can be damaged, and great potential safety hazards exist.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a heavy hammer lever type safety valve, which solves the problems in the background technology.

In order to achieve the purpose, the invention is realized by the following technical scheme: a heavy hammer lever type safety valve comprises a valve cover, a lever, a valve clack, a guide seat and a valve seat, wherein the lever is rotatably connected to the top of the valve cover, the valve clack is movably arranged inside the valve cover, the guide seat and the valve seat are fixedly arranged inside the valve cover, the guide disk is fixedly sleeved on the outer surface of the valve clack, the valve rod is movably connected to the bottom of the lever, the valve cover comprises a pressure release cavity, a pressure release port communicated with the pressure release cavity, a medium inlet communicated with the pressure release cavity and a valve cover fixedly connected to the top of the pressure release cavity, one end of the lever is rotatably connected with a support, the bottom end of the support is fixedly connected with the valve cover, a guide frame is movably sleeved on the outer surface of the lever, the bottom end of the guide frame is fixedly connected with the valve cover, an adjusting frame and a fixing frame are fixedly arranged on the outer surface of the lever respectively, the bottom of valve ball runs through and extends to the bottom of sealed cowling, the valve rod runs through valve gap and connection pad and extends to the inside in pressure release chamber, the guide holder includes connection pad and the guided way of fixed connection in the connection pad bottom with valve gap fixed connection, the intercommunication chamber has been seted up to the inside of disk seat, sealed face has been seted up to the inside wall of disk seat, the surface that the valve ball is located the sealed cowling bottom is inconsistent with sealed face, the intercommunication chamber is linked together with the medium entry, the surface fixed connection of guide disc has the guide bar, guide bar and guided way sliding connection, the valve rod is located the inside one end in pressure release chamber and the top fixed connection of shell, valve rod and valve gap and connection pad swing joint.

Optionally, a rolling cover and a baffle are respectively and fixedly mounted inside the housing, the baffle is located at the bottom of the rolling cover, and balls are connected to the inner wall of the rolling cover in a rolling manner.

Optionally, the number of the ball bearings is thirteen, and the thirteen ball bearings are in rolling connection with the outer surface of the valve ball positioned in the shell.

Optionally, the outer surface of the valve ball is provided with friction lines, the friction lines are uniformly arranged in a grid shape, and the grid area of the friction lines is 10 square millimeters.

Optionally, the valve ball comprises a packing chamber and a cavity, the cavity occupying about one third of the volume of the valve ball.

Optionally, the sealing surface includes a fitting surface fitted with the lower surface of the valve ball and a release surface extending downward, and the cross section of the release surface is arc-shaped.

Optionally, the guide rail includes two guide plates that incline in opposite directions, the inclination angle of guide plate is 10 degrees, and the clearance value of two guide plate bottoms is less than the diameter value of guide bar, and the clearance value at two guide plate tops is greater than the diameter value of guide bar.

The invention provides a heavy hammer lever type safety valve which has the following beneficial effects:

1. this weight lever relief valve, through setting up valve clack and disk seat cooperation, get into sealed face and let and stay on sealed face surface when the foreign matter, valve ball lower surface and foreign matter contact in the valve clack, after the pressure release, the pressure effect that utilizes lever and weight makes valve ball and foreign matter contradict, lead to the valve ball atress inhomogeneous and roll, further drive the foreign matter and fall into the intercommunication chamber along sealed face, thereby avoid having the clearance between valve clack and disk seat, cause the relief valve to produce the problem of revealing, effectively improve the operating efficiency of pressure vessels such as boilers, the operation cost is reduced, the potential safety hazard is reduced.

2. This weight lever relief valve, through setting up the guide holder and the cooperation of guiding disc, behind the relief valve pressure release, the guide bar in the guiding disc outside moves down along the guided way structure of guide holder to drive the accurate whereabouts of valve clack, avoid valve rod and valve gap long-term friction, cause the through-hole increase of valve gap, lead to the valve ball to fall back the offset, there is the problem in clearance between valve clack and disk seat, further improve the tightness of this relief valve, avoid producing and reveal.

Drawings

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

FIG. 2 is a schematic view of the valve flap structure of the present invention;

FIG. 3 is a schematic cross-sectional view of the valve flap of the present invention;

FIG. 4 is a schematic cross-sectional view of the valve flap and valve seat of the present invention when foreign matter is present;

fig. 5 is a schematic bottom view of the guide base of the present invention.

In the figure: 1. a valve housing; 11. a pressure relief cavity; 12. a pressure relief port; 13. a media inlet; 14. a valve cover; 2. a lever; 21. a support; 22. a guide frame; 23. an adjusting bracket; 24. a fixed mount; 25. a weight; 3. a valve flap; 31. a housing; 310. a rolling cage; 311. a ball bearing; 312. a baffle plate; 32. a sealing cover; 33. a valve ball; 330. filling the cavity; 331. a cavity; 4. a guide seat; 41. a connecting disc; 42. a guide rail; 5. a valve seat; 51. a sealing surface; 52. a communicating cavity; 6. a guide plate; 61. a guide bar; 7. a valve stem.

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.

Referring to fig. 1 to 5, the present invention provides a technical solution: a heavy hammer lever type safety valve comprises a valve cover 1, a lever 2 rotationally connected to the top of the valve cover 1, a valve clack 3 movably arranged in the valve cover 1, a guide seat 4 and a valve seat 5 fixedly arranged in the valve cover 1, a guide disc 6 fixedly sleeved on the outer surface of the valve clack 3 and a valve rod 7 movably connected to the bottom of the lever 2, wherein the valve cover 1 comprises a pressure relief cavity 11, a pressure relief opening 12 communicated with the pressure relief cavity 11, a medium inlet 13 communicated with the pressure relief cavity 11 and a valve cover 14 fixedly connected to the top of the pressure relief cavity 11, one end of the lever 2 is rotationally connected with a support 21, the bottom end of the support 21 is fixedly connected with the valve cover 14, a guide frame 22 is movably sleeved on the outer surface of the lever 2, the bottom end of the guide frame 22 is fixedly connected with the valve cover 14, an adjusting frame 23 and a fixing frame 24 are respectively fixedly arranged on the outer surface of the lever 2, a heavy, the sealing cover 32 fixedly connected to the bottom of the outer shell 31 and the valve ball 33 in rolling connection with the inner part of the outer shell 31 are fixedly provided with a rolling cover 310 and a baffle 312 respectively in the outer shell 31, the baffle 312 is positioned at the bottom of the rolling cover 310, the inner wall of the rolling cover 310 is in rolling connection with the ball 311, the number of the ball 311 is thirteen, the ball 311 and the valve ball 33 are in rolling connection with the outer surface of the outer shell 31, the ball 311 and the rolling cover 310 are arranged to match with each other, the rolling performance of the valve ball 33 can be improved, foreign matters can be prevented from being stuck, the bottom of the valve ball 33 penetrates through and extends to the bottom of the sealing cover 32, the outer surface of the valve ball 33 is provided with friction grains, the friction grains are uniformly arranged in a grid shape, the grid area of the friction grains is 10 square millimeters, the friction force between the valve ball 33 and the foreign matters can be increased, the valve ball 33 is ensured to drive the foreign matters to fall out when, the leakage of a medium from a friction thread gap is avoided, the valve ball 33 comprises a filling cavity 330 and a cavity 331, the cavity 331 occupies about one third of the volume of the valve ball 33, through the structures of the filling cavity 330 and the cavity 331, the density distribution of the valve ball 33 is not uniform, the gravity center position of the valve ball 33 is effectively changed, the gravity center of the valve ball 33 is positioned below the ball center of the valve ball 33, when the pressure medium is relieved, the pressure medium drives the valve ball 33 to roll, after the pressure is relieved, the valve ball 33 has a rolling trend through the gravity effect, the foreign matter is further prevented from being stuck, the valve rod 7 penetrates through the valve cover 14 and the connecting disc 41 and extends to the inside of the pressure relief cavity 11, the guide seat 4 comprises a connecting disc 41 fixedly connected with the valve cover 14 and a guide rail 42 fixedly connected to the bottom of the connecting disc 41, a communicating cavity 52 is formed in the inside of the valve seat 5, a sealing surface 51 is formed in the inner side wall of the valve seat 5, the sealing, the section of the separating surface is arc-shaped, the structure matching of the conjunction surface and the separating surface through the cover 51 ensures the tightness and simultaneously effectively guides the foreign matter to separate, the outer surface of the valve ball 33 at the bottom of the sealing cover 32 is abutted against the sealing surface 51, the communicating cavity 52 is communicated with the medium inlet 13, through the matching of the valve clack 3 and the valve seat 5, when the foreign matter enters the sealing surface 51 and is leaked on the surface of the sealing surface 51, the lower surface of the valve ball 33 in the valve clack 3 is contacted with the foreign matter, after the pressure is released, the pressure action of the lever 2 and the heavy hammer 25 is utilized to make the valve ball 33 abutted against the foreign matter, so that the valve ball 33 is unevenly stressed and rolls, and further drives the foreign matter to fall into the communicating cavity 52 along the sealing surface 51, thereby avoiding the gap between the valve clack 3 and the valve seat 5 and causing the leakage problem of the safety valve, effectively improving, the outer surface of the guide disc 6 is fixedly connected with a guide rod 61, the guide rail 42 comprises two guide plates which incline in opposite directions, the inclination angle of the guide plates is 10 degrees, the gap value of the bottoms of the two guide plates is smaller than the diameter value of the guide rod 61, the gap value of the tops of the two guide plates is larger than the diameter value of the guide rod 61, the guide function of the guide rail 42 can be ensured by matching the two guide plates in opposite directions, foreign matters are prevented from blocking the gap of the guide rail 42, the guide rod 61 is in sliding connection with the guide rail 42, one end of the valve rod 7, which is positioned in the pressure relief cavity 11, is fixedly connected with the top of the shell 31, the valve rod 7 is movably connected with the valve cover 14 and the connecting disc 41, the guide seat 4 is matched with the guide disc 6, after the pressure relief valve is relieved, the guide rod 61 outside the guide disc 6 moves downwards along the guide rail 42 structure of the guide seat 4, so that the valve cla, the through hole of the valve cover 14 is enlarged, the valve ball 33 is deviated in the falling position, and a gap exists between the valve clack 3 and the valve seat 5, so that the tightness of the safety valve is further improved, and leakage is avoided.

In summary, in the weight lever type safety valve, when the weight lever type safety valve is used, the adjusting frame 23 is adjusted to change the position of the weight 25, so as to change the force arm of the lever 2, adjust the opening pressure, when the pressure in the pressure container is smaller than the opening pressure, the valve flap 3 and the valve seat 5 are in a sealed state, when the pressure in the pressure container is greater than the opening pressure, the medium pressure pushes the valve flap 3 to separate the valve ball 33 from the sealing surface 51, the medium flows along the medium inlet 13, the communication cavity 52 and the pressure relief cavity 11 in sequence and is discharged from the pressure relief opening 12, after the pressure is relieved, the pressure in the pressure container is reduced, and when the pressure in the pressure container is reduced to be lower than the opening pressure, the lever 2 and the weight 25 act to move the guide rod 61 downward along the guide rail 42, so.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.