Discharge valve of mechanical fusion machine

Abstract

The present invention relates to the technical field of fusion machines, and in particular to a discharge valve of a mechanical fusion machine, wherein the discharge valve of the mechanical fusion machine is arranged on the bottom surface of a cylinder of the mechanical fusion machine, and the discharge valve of the mechanical fusion machine comprises a valve seat, a valve core, a connecting pipe body, a discharge pipe body, a driving assembly and a sealing ring anti-failure assembly, wherein the valve seat is fixedly connected to the cylinder body, a valve hole is provided on the valve seat, the connecting pipe body and the valve seat are fixedly connected, a sealing ring is provided on the outer periphery of the valve core, the discharge pipe body and the connecting pipe body are connected, the driving assembly and the connecting pipe body are fixedly connected, and the output end of the driving assembly is transmission-connected to the valve core. Through the design of the sealing ring anti-failure assembly, the sealing ring and the valve core can be circumferentially cleaned and removed during the movement of the valve core after the powder is discharged, thereby ensuring the sealing degree of the valve core when it is in the valve hole, and preventing the powder adhered to the sealing ring from failing due to the deformation of the sealing ring caused by the presence of particles on the sealing ring when the valve core enters the valve hole.

Description

Technical Field

[0001] The invention relates to the technical field of fusion machines, and in particular to a discharge valve of a mechanical fusion machine. Background Art

[0002] Mechanical fusion machine is a kind of equipment commonly used for coating micron-sized granular materials. The pressure, shear force and friction force generated by the internal components of the mechanical fusion machine make the remaining powders coat the surface of some of the powder particles through physical methods to form a single or multi-layer coating film. This modification treatment helps to improve the dispersion, fluidity, wear resistance, corrosion resistance and other properties of the powder. The powders processed by the mechanical fusion machine in traditional technology usually reach the micron level or even the nanometer level, and the discharge valve of the mechanical fusion machine is designed at the bottom of the barrel of the fusion machine, which requires extremely high requirements for the valve core sealing of the discharge valve of the mechanical fusion machine. It is found in actual working conditions that when processing fine powders with a particle size less than 50μm or functional powders with adhesion properties (such as nano-scale metal oxides, polymer-coated particles), there are the following technical defects: Powder adhesion accumulation effect: During the movement of the valve core, the powder generates electrostatic adsorption on the sealing surface groove and the elastomer surface, resulting in the formation of an uneven powder accumulation layer in the working area of ​​the sealing ring, especially in the closing stage of the discharge valve, the residual powder is squeezed into the deformation area of ​​the sealing ring, causing local stress concentration. When the powder layer thickness exceeds 50μm, the sealing contact pressure distribution deviates from the design value by 30%-45%, causing irreversible deformation of the sealing ring and shortening the service life cycle (usually less than 2000 opening and closing cycles). Summary of the invention

[0003] The technical problem to be solved by the present invention is: in order to overcome the problem that the discharge valve of the mechanical fusion machine in the prior art is designed at the bottom of the cylinder of the fusion machine, extremely high requirements are needed for the sealing degree of the discharge valve of the mechanical fusion machine. Then, during the discharge process, the powder is very easy to adhere to the component surface and the surface of the sealing ring, which reduces the sealing degree of the discharge valve, resulting in leakage and escape of the powder, and the adhesion of the powder will cause the service life of the sealing ring to decrease, requiring frequent replacement. A discharge valve of a mechanical fusion machine is provided.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a discharge valve of a mechanical fusion machine, the discharge valve of the mechanical fusion machine is arranged on the bottom surface of the cylinder of the mechanical fusion machine, the discharge valve of the mechanical fusion machine comprises a valve seat, a valve core, a connecting pipe body, a discharge pipe body, a driving assembly and a sealing ring anti-failure assembly, the valve seat is fixedly connected to the bottom of the cylinder of the mechanical fusion machine, a valve hole for connecting the inner cavity of the cylinder and the tube cavity of the connecting pipe body is provided on the valve seat, the valve hole matches the valve core, the connecting pipe body and the valve seat are fixedly connected, a sealing groove is provided on the outer periphery of the valve core, a sealing ring is provided in the sealing groove, the discharge pipe body and the connecting pipe body are connected, a control valve for controlling the on and off of the discharge pipe body is installed on the discharge pipe body, the driving assembly is fixedly connected to the connecting pipe body, the driving assembly is used to provide power for the up and down movement of the valve core away from or close to the valve hole and the circumferential rotation of the valve core, and the output end of the driving assembly is drivingly connected to the valve core;

[0005] The sealing ring anti-failure component comprises a side tube body, an anti-failure part, an air pump, a first air hole and a second air hole. One end of the side tube body is connected to the connecting tube body, and a sealing part is installed on the other end. The anti-failure part is arranged in the side tube body, and the anti-failure part and the side tube body are slidably connected. The first air hole is provided on the sealing part, and the first air hole is located between the sealing part and the anti-failure part. The second air hole is provided on the connecting tube body. The air flow end of the air pump is connected to the first air hole and the second air hole. Through the design of the sealing ring anti-failure component, the sealing ring and the valve core can be circumferentially cleaned and removed during the movement of the valve core after the powder is discharged, so as to ensure the sealing degree of the valve core in the valve hole, thereby preventing the powder from leaking out during the fusion coating process, and also increasing the service life of the sealing ring to prevent the failure of the sealing ring. The first air hole and the second air hole can be used to assist in the removal of the powder, and the first air hole and the second air hole can be used to remove the powder on the anti-failure part to ensure the cleaning effect.

[0006] When air enters the first air hole and the second air hole, the air input from the first air hole generates high pressure between the sealing element and the anti-failure element in the side tube body, forcing the anti-failure element to move into the connecting tube body. The anti-failure element in the connecting tube body can contact the valve core to remove powder on the sealing ring and the surface of the valve core.

[0007] In order to solve the problem that the powder will be attached to the anti-failure part during discharging, resulting in a decrease in the removal effect, the sealing ring anti-failure component further includes a protective part, the protective part and the side tube body are fixedly connected, the anti-failure part is located between the sealing part and the protective part, when air is introduced into the first air hole and the second air hole, the protective part opens to connect the side tube body and the connecting tube body,

[0008] The protective member further comprises a partition and a protective plate, the partition is fixedly connected to the side tube body, a through hole for the anti-failure member to pass through is opened on the partition, and the protective member and the partition are rotatably connected;

[0009] When the protective member separates the side pipe body and the connecting pipe body, the protective member covers the through hole.

[0010] In order to solve the problem of how to connect the anti-failure part to the side tube body, a sealing ring anti-failure assembly is further included, including a telescopic rod and a reset element, one end of the telescopic rod is fixedly connected to the side tube body, and the other end is fixedly connected to the anti-failure part, the reset element is sleeved on the telescopic rod, one end of the reset element is fixedly connected to the side tube body, and the other end is fixedly connected to the anti-failure part.

[0011] In order to solve the problems of inaccurate movement of the anti-failure part and poor powder removal effect in a negative pressure environment, the sealing ring anti-failure assembly further includes an auxiliary plate, the auxiliary plate and the partition are fixedly connected, and the auxiliary plate is located between the sealing part and the protective part, and the auxiliary plate is used to guide the movement of the anti-failure part under positive pressure and to cause the anti-failure part to detach from the auxiliary plate and generate vibration under negative pressure.

[0012] In order to solve the problem of inconvenience in cleaning powder attached to the inner wall of the valve hole, a weight-reducing cavity is further provided in the valve core, and the sealing ring anti-failure component includes a cleaning piece, the cleaning piece and the valve core are fixedly connected, the cleaning piece is located in the weight-reducing cavity, and a cleaning hole connected to the weight-reducing cavity is provided on the side wall of the valve core, the cleaning end of the cleaning piece passes through the cleaning hole and protrudes from the side wall of the valve core, and the cleaning piece can contact the wall of the valve hole.

[0013] In order to solve the problem that the cleaned powder is easily accumulated on the valve core, a connecting hole is further provided on the bottom surface of the valve core, the connecting hole connects the weight reduction chamber and the connecting tube body, and a self-opening and closing part is arranged in the connecting hole. The self-opening and closing part includes a plug, a connecting groove, an elastic element and a magnet. The connecting groove is provided on the wall of the connecting hole, and the plug is slidably arranged in the connecting hole. One end of the elastic element abuts the plug, and the other end abuts the connecting groove. The elastic element is located below the plug, and the magnet and the connecting tube body are fixedly connected, and the magnet is located at one end of the connecting tube body close to the driving assembly. The plug is made of magnetic material, and the magnet can move the plug through magnetic attraction to connect the weight reduction chamber and the connecting tube body. The bottom of the cleaning hole has a guide surface inclined downward from the outer periphery of the valve core to the center.

[0014] It further includes a driving assembly including a cylinder body, a piston, a piston rod and a traction member. The cylinder body is fixedly connected to a connecting tube body, the piston is slidably arranged in the cylinder body, one end of the piston rod is rotatably connected to the piston, the other end of the piston rod passes through the cylinder body, the connecting tube body and is fixedly connected to the valve core, a guide groove is provided on the outer wall surface of the piston rod, the guide groove includes a spiral groove, the traction member is fixedly connected to the connecting tube body, the traction section of the traction member is located in the spiral groove, and the traction member can drive the valve core to rotate circumferentially when the valve core moves up and down.

[0015] The beneficial effects of the present invention are as follows: a discharge valve of a mechanical fusion machine provided by the present invention, through the design of a sealing ring anti-failure component, can complete the circumferential cleaning and removal of the sealing ring and the valve core during the movement of the valve core after the powder discharge is completed, thereby ensuring the sealing degree of the valve core when it is in the valve hole, thereby preventing the powder from leaking out during the fusion and coating process, and preventing the powder adhered to the sealing ring from failing due to deformation of the sealing ring caused by the presence of particles on the sealing ring when the valve core enters the valve hole, thereby increasing the service life of the sealing ring, and assisting in the removal of the powder by blowing air through the first air hole and causing the powder to fall into the discharge pipe body to increase the discharge rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1 It is a schematic diagram of the structure of the present invention;

[0018] Figure 2 The present invention Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0019] Figure 3 It is a structural schematic diagram of the discharging state of the present invention;

[0020] Figure 4 The present invention Figure 3 A schematic diagram of the enlarged structure at B in the middle;

[0021] Figure 5 The present invention Figure 4 A schematic diagram of the structure in which the first air hole and the second air hole are in an air intake state;

[0022] Figure 6 The present invention Figure 3 Schematic diagram of the enlarged structure at C in the middle;

[0023] Figure 7 It is a structural schematic diagram of the discharge valve of the present invention.

[0024] In the figure: 1, valve seat, 11, valve hole,

[0025] 2. Valve core, 21. Sealing groove, 22. Sealing ring, 23. Weight reduction cavity, 24. Cleaning hole, 241. Guide surface, 25. Connecting hole,

[0026] 3. Connect the pipe body.

[0027] 4. Discharge pipe, 41. Control valve,

[0028] 5. driving assembly, 51. cylinder, 52. piston, 53. piston rod, 531. guide groove, 54. traction member,

[0029] 6. Sealing ring failure prevention component, 61. Side tube body, 611. Sealing member, 62. Failure prevention member, 63. Air pump, 631. First air hole, 6311. First air pipe, 632. Second air hole, 64. Protective member, 641. Partition, 6411. Through hole, 642. Protective plate, 65. Telescopic rod, 66. Reset element, 67. Auxiliary plate, 68. Cleaning member,

[0030] 7. Self-opening and closing member, 71. Plug, 72. Connecting groove, 73. Elastic element, 74. Magnet;

[0031] 8. Cylinder body. DETAILED DESCRIPTION

[0032] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0033] like Figure 1 1 is a schematic diagram of the structure of the present invention, a discharge valve of a mechanical fusion machine, the discharge valve of the mechanical fusion machine is arranged on the bottom surface of the cylinder 8 of the mechanical fusion machine, the discharge valve of the mechanical fusion machine includes a valve seat 1, a valve core 2, a connecting pipe body 3, a discharge pipe body 4, a drive component 5 and a sealing ring anti-failure component 6, the valve seat 1 is fixedly connected to the bottom of the cylinder 8 of the mechanical fusion machine, the valve seat 1 is provided with a valve hole 11 for connecting the inner cavity of the cylinder 8 and the tube cavity of the connecting pipe body 3, the valve hole 11 matches the valve core 2, the connecting pipe body 3 and the valve The seat 1 is fixedly connected, a sealing groove 21 is opened on the outer periphery of the valve core 2, a sealing ring 22 is arranged in the sealing groove 21, a discharge pipe body 4 is connected to a connecting pipe body 3, a control valve 41 for controlling the on-off of the discharge pipe body 4 is installed on the discharge pipe body 4, the control valve 41 can be a solenoid valve, a drive assembly 5 is fixedly connected to the connecting pipe body 3, the drive assembly 5 is used to provide power for the up and down movement of the valve core 2 away from or close to the valve hole 11 and the circumferential rotation of the valve core 2, and the output end of the drive assembly 5 is drivingly connected to the valve core 2;

[0034] like Figure 5 , 6As shown, the sealing ring failure prevention assembly 6 includes a side tube body 61, a failure prevention member 62, an air pump 63, a first air hole 631 and a second air hole 632. One end of the side tube body 61 is connected to the connecting tube body 3, and a sealing member 611 is installed on the other end. The sealing member 611 can be a valve. The failure prevention member 62 is arranged in the side tube body 61. The failure prevention member 62 and the side tube body 61 are slidably connected. The first air hole 631 is opened on the sealing member 611 or the side tube body 61, and the first air hole 631 is located between the sealing member 611 and the failure prevention member 62. The output of the first air hole 631 A first air pipe 6311 is installed on the output end, and the output end of the first air pipe 6311 extends to the anti-failure part 62. The first air pipe 6311 can concentrate the airflow. The second air hole 632 is opened on the connecting tube body 3. The air flow end of the air pump 63 is connected to the first air hole 631 and the second air hole 632. The anti-failure part 62 can be a brush plate with bristles, and the brush plate can be a straight plate or an arc plate. The end of the anti-failure part 62 is bent toward the sealing part 611 to form a guide part, and the guide part is enclosed to form a cavity. The output end of the first air pipe 6311 extends into the cavity.

[0035] The air pump 63 can be a vortex air pump or a micro air pump. The vortex air pump is a device that can be used for both blowing and exhausting. Its unique annular design makes it more efficient and durable. This air pump generates airflow through internal rotating blades, which can be used for exhausting or blowing when needed, and usually achieves these two functions through the same port.

[0036] The first air hole 631 and the second air hole 632 are arranged on the same side, and the first air hole 631 and the second air hole 632 are arranged on opposite sides of the discharge tube body 4. Blowing through the first air hole 631 and the second air hole 632 can assist in removing the powder and make the powder fall into the discharge tube body 4 to increase the discharge rate.

[0037] Preferably, the first air hole 631 faces the anti-failure component 62, so that the anti-failure component 62 can extend out and contact the valve core 2 under the blowing of gas and the assistance of high pressure.

[0038] When air enters the first air hole 631 and the second air hole 632, the air input from the first air hole 631 causes the side tube body 61 to generate high pressure between the sealing part 611 and the anti-failure part 62, forcing the anti-failure part 62 to move into the connecting tube body 3. The anti-failure part 62 entering the connecting tube body 3 can contact the valve core 2 to remove powder on the sealing ring 22 and the surface of the valve core 2.

[0039] like Figure 5 , 6As shown, the sealing ring failure prevention assembly 6 includes a protective member 64, the protective member 64 is fixedly connected to the side tube body 61, and the failure prevention member 62 is located between the sealing member 611 and the protective member 64. When air is introduced into the first air hole 631 and the second air hole 632, the protective member 64 is opened to connect the side tube body 61 with the connecting tube body 3.

[0040] The protective member 64 includes a partition 641 and a protective plate 642. The partition 641 is fixedly connected to the side tube body 61. The partition 641 is provided with a through hole 6411 for the anti-failure member 62 to pass through. The protective member 64 can provide protection for the anti-failure member 62 when the powder is discharged to avoid being contaminated by the powder. The protective member 64 is rotatably connected to the partition 641. A torsion spring is arranged between the protective plate 642 and the partition 641. The torsion spring ensures the sealing effect of the protective plate 642.

[0041] When the protection member 64 separates the side tube body 61 and the connection tube body 3 , the protection member 64 covers the through hole 6411 .

[0042] like Figure 5 , 6 As shown, the sealing ring anti-failure assembly 6 includes a telescopic rod 65 and a reset element 66. The reset element 66 can be a spring. One end of the telescopic rod 65 is fixedly connected to the side tube body 61, and the other end is fixedly connected to the anti-failure component 62. The reset element 66 is sleeved on the telescopic rod 65. One end of the reset element 66 is fixedly connected to the side tube body 61, and the other end is fixedly connected to the anti-failure component 62.

[0043] The sealing ring anti-failure assembly 6 includes an auxiliary plate 67, which is fixedly connected to the partition 641 and is located between the sealing member 611 and the protective member 64. The auxiliary plate 67 is used to guide the movement of the anti-failure member 62 under positive pressure and to separate the anti-failure member 62 from the auxiliary plate 67 under negative pressure to generate a certain degree of vibration, thereby helping the powder to fall.

[0044] like Figure 2 , 3As shown, a weight-reducing cavity 23 is provided in the valve core 2, and the sealing ring failure prevention component 6 includes a cleaning member 68, which is fixedly connected to the valve core 2, and is located in the weight-reducing cavity 23. A cleaning hole 24 communicating with the weight-reducing cavity 23 is provided on the side wall of the valve core 2, and a cleaning end of the cleaning member 68 passes through the cleaning hole 24 and protrudes from the side wall of the valve core 2, and the cleaning member 68 can contact the hole wall of the valve hole 11, and the cleaning member 68 is a cleaning brush, and the cleaning hole 24 can accommodate the cleaning member 68, and the cleaning member 68 protrudes from the surface of the valve core 2 by 0.5-1mm, and when the valve core 2 is located in the valve hole 11, the cleaning member 68 bends, and the cleaning hole 24 can accommodate the cleaning brush. The cleaning piece 68 is curved. At this time, the cleaning piece 68 is against the hole wall of the valve hole 11 to prevent the cleaning piece 68 from being stuck between the valve core 2 and the hole wall of the valve hole 11. The cleaning hole 24 is smaller than the valve core 2 as a whole and occupies a small circumferential area. Therefore, it will not affect the sealing of the valve core 2. The cleaning hole 24 and the cleaning piece 68 correspond one to one. The cleaning piece 68 can be set to one or more. Preferably, two cleaning pieces 68 are arranged. The cleaning effect increases with the increase of the cleaning pieces 68. The bottom of the cleaning hole 24 has a guide surface 241 that is inclined downward from the outer periphery of the valve core 2 to the center. An angle is formed between the guide surface 241 and the hole wall of the valve hole 11, and the angle is an obtuse angle.

[0045] A connecting hole 25 is provided on the bottom surface of the valve core 2, and the connecting hole 25 connects the weight-reducing chamber 23 and the connecting tube body 3. A self-opening and closing component 7 is arranged in the connecting hole 25, and the self-opening and closing component 7 includes a plug 71, a connecting groove 72, an elastic element 73 and a magnet 74. The connecting groove 72 is provided on the hole wall of the connecting hole 25, and the plug 71 is slidably arranged in the connecting hole 25. One end of the elastic element 73 abuts against the plug 71, and the other end abuts against the connecting groove 72. The elastic element 73 is a spring, and the elastic element 73 is located below the plug 71. When the first air hole 631 and the second air hole 632 are evacuated, the magnet 74 is fixedly connected to the connecting tube body 3, and the magnet 74 is located at one end of the connecting tube body 3 close to the driving assembly 5. The plug 71 is made of magnetic material, and the magnet 74 can move the plug 71 by magnetic attraction to connect the weight-reducing chamber 23 and the connecting tube body 3.

[0046] As the valve core 2 approaches the magnet 74, the attraction of the magnet 74 to the plug 71 increases, causing the plug 71 to move downward, and the weight reduction chamber 23 is connected to the connecting tube body 3, so that the powder can fall from the connecting hole 25 into the connecting tube body 3. When the first air hole 631 and the second air hole 632 are evacuated, the air flow can help the powder fall into the connecting tube body 3. The magnet 74 has a ring structure.

[0047] In another embodiment, the plug 71 is connected to a float via a rope, the float is located at the end of the second air hole 632 , and the diameter of the float is smaller than the diameter of the second air hole 632 .

[0048] like Figure 1 , 4As shown, the driving assembly 5 includes a cylinder body 51, a piston 52, a piston rod 53 and a traction member 54. The cylinder body 51 is fixedly connected to the connecting pipe body 3, the piston 52 is slidably arranged in the cylinder body 51, one end of the piston rod 53 is rotatably connected to the piston 52, and the other end of the piston rod 53 passes through the cylinder body 51 and the connecting pipe body 3 and is fixedly connected to the valve core 2. A guide groove 531 is provided on the outer wall surface of the piston rod 53, and the guide groove 531 includes a spiral groove. The traction member 54 is fixedly connected to the connecting pipe body 3, and the traction section of the traction member 54 is located in the spiral groove. The traction member 54 can drive the valve core 2 to rotate circumferentially when the valve core 2 moves up and down. The traction member 54 can be a bearing follower, the bearing follower is fixedly connected to the connecting pipe body 3, and the follower end of the bearing follower is located in the spiral groove.

[0049] In another embodiment, the guide groove 531 further includes a linear groove, which is connected to the spiral groove, and the linear groove can assist in positioning the valve core 2 .

[0050] In another embodiment, the driving assembly 5 can also be a combined structure of a rotator and a cylinder, or a screw transmission mechanism.

[0051] Working process:

[0052] After the powder coating in the cylinder 8 is completed, the driving assembly 5 is started, the air in the cylinder 51 is pumped to move the piston 52 downward, the valve core 2 is separated from the valve hole 11, the space in the cylinder 8 is connected with the connecting pipe body 3, and the powder flows from the cylinder 8 into the connecting pipe body 3 and flows out from the discharge pipe body 4.

[0053] During discharge: during the powder output process, the protective member 64 can allow the powder dispersed on the wall to enter the side tube body 61, thereby protecting the anti-failure member 62 and ensuring the effect of the anti-failure member 62 in removing the powder.

[0054] After the discharge is completed: when air is taken into the first air hole 631 and the second air hole 632, high pressure is generated in the side tube body 61 and the connecting tube body 3, and the first air hole 631 is facing the anti-failure part 62. The air input from the first air hole 631 makes the side tube body 61 generate high pressure between the sealing part 611 and the anti-failure part 62, and the anti-failure part 62 is forced to move to push away the protective plate 642 and enter the connecting tube body 3 under the action of the blowing force. The anti-failure part 62 entering the connecting tube body 3 can contact the valve core 2 to remove the powder on the surface of the sealing ring 22 and the valve core 2, and due to the elastic connection of the anti-failure part 62, the anti-failure part 62 can fit the valve core 2. At this time, the drive assembly 5 is started to make the valve core 2 move up and down and rotate circumferentially. In the process of completing again, the powder on the surface of the valve core 2 and the surface of the sealing ring 22 is removed with the contact cleaning of the anti-failure part 62 and the blowing assistance of the first air hole 631 and the second air hole 632.

[0055] When the valve core 2 moves to the valve hole 11, the first air hole 631 and the second air hole 632 are evacuated, so that a negative pressure environment is generated in the connecting tube body 3 and the side tube body 61 to remove the powder on the anti-failure part 62. Under the action of the reset element 66, the anti-failure part 62 retracts into between the sealing part 611 and the protective part 64. The protective part 64 separates the side tube body 61 and the connecting tube body 3. Under the negative pressure environment, due to the design of the first air hole 631 and the second air hole 632, the gas leakage direction of the side tube body 61 is located on the path of the anti-failure part 62, so that the anti-failure part 62 can move toward the first air hole 631 and can move under the elastic force of the reset element 66. This process is repeated, so that the anti-failure part 62 vibrates to shake off the powder on it and is evacuated by the first air hole 631 and the second air hole 632, so that the anti-failure part 62 is cleaned;

[0056] As the valve core 2 approaches the magnet 74, the attraction of the magnet 74 to the plug 71 increases, causing the plug 71 to move downward, and the weight reduction chamber 23 is connected to the connecting tube body 3, so that the powder can fall from the connecting hole 25 into the connecting tube body 3. When the first air hole 631 and the second air hole 632 are evacuated, the air flow can help the powder fall into the connecting tube body 3 and be sucked away from the cleaning hole 24, thereby preventing it from falling on the valve core 2 and accumulating.

[0057] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A discharge valve of a mechanical fusion machine, characterized in that: The invention comprises a valve seat (1), a valve core (2), a connecting pipe body (3), a discharge pipe body (4), a driving assembly (5) and a sealing ring failure prevention assembly (6), wherein the valve seat (1) is fixedly connected to the bottom of a barrel (8) of a mechanical fusion machine, a valve hole (11) is provided on the valve seat (1) for connecting the inner cavity of the barrel body (8) and the tube cavity of the connecting pipe body (3), the valve hole (11) matches the valve core (2), the connecting pipe body (3) and the valve seat (1) are fixedly connected, a sealing ring (22) is provided on the outer periphery of the valve core (2), the discharge pipe body (4) is connected to the connecting pipe body (3), the driving assembly (5) is fixedly connected to the connecting pipe body (3), the output end of the driving assembly (5) is drivingly connected to the valve core (2), and the driving assembly (5) is used to provide power for the valve core (2) to move up and down away from or close to the valve hole (11) and to provide power for the circumferential rotation of the valve core (2); The sealing ring anti-failure assembly (6) comprises a side tube body (61), an anti-failure component (62), an air pump (63), a first air hole (631) and a second air hole (632); one end of the side tube body (61) is connected to the connecting tube body (3), and the other end is provided with a sealing component (611); the anti-failure component (62) is arranged in the side tube body (61); the anti-failure component (62) and the side tube body (61) are slidably connected; the first air hole (631) is opened in the sealing component (611), and the first air hole (631) is located between the sealing member (611) and the anti-failure member (62); a first air pipe (6311) is installed on the output end of the first air hole (631), and the output end of the first air pipe (6311) extends to the anti-failure member (62); the second air hole (632) is opened on the connecting pipe body (3); and the air flow end of the air pump (63) is connected to the first air hole (631) and the second air hole (632); A weight-reducing cavity (23) is provided in the valve core (2); the sealing ring anti-failure assembly (6) comprises a cleaning member (68); the cleaning member (68) and the valve core (2) are fixedly connected; the cleaning member (68) is located in the weight-reducing cavity (23); a cleaning hole (24) in communication with the weight-reducing cavity (23) is provided on the side wall of the valve core (2); a cleaning end of the cleaning member (68) passes through the cleaning hole (24) and protrudes from the side wall of the valve core (2); and the cleaning member (68) is capable of contacting the hole wall of the valve hole (11); A connecting hole (25) is provided on the bottom surface of the valve core (2). The connecting hole (25) communicates with the weight-reducing chamber (23) and the connecting tube body (3). A self-opening and closing member (7) is arranged in the connecting hole (25). The self-opening and closing member (7) comprises a plug (71), a connecting groove (72), an elastic element (73) and a magnet (74). The connecting groove (72) is provided on the hole wall of the connecting hole (25). The plug (71) is slidably arranged in the connecting hole (25). One end of the elastic element (73) abuts against the plug (71) and the other end abuts against the connecting groove (72). The elastic element (73) is located below the plug (71). The magnet (74) and the connecting tube body (3) are fixedly connected. The magnet (74) is located at one end of the connecting tube body (3) close to the driving assembly (5). The plug (71) is made of magnetic material.

2. The discharge valve of the mechanical fusion machine according to claim 1, characterized in that: The sealing ring failure prevention component (6) comprises a protective member (64), the protective member (64) being fixedly connected to the side tube body (61), the failure prevention member (62) being located between the sealing member (611) and the protective member (64), and when air is introduced into the first air hole (631) and the second air hole (632), the protective member (64) is opened so that the side tube body (61) and the connecting tube body (3) are in communication.

3. The discharge valve of the mechanical fusion machine according to claim 2, characterized in that: The protective member (64) comprises a partition (641) and a protective plate (642); the partition (641) and the side tube body (61) are fixedly connected; a through hole (6411) for the failure prevention member (62) to pass through is provided on the partition (641); the protective member (64) and the partition (641) are rotatably connected; When the protective member (64) separates the side tube body (61) and the connecting tube body (3), the protective member (64) covers the through hole (6411).

4. The discharge valve of the mechanical fusion machine according to claim 1, characterized in that: The sealing ring anti-failure assembly (6) comprises a telescopic rod (65) and a reset element (66); one end of the telescopic rod (65) is fixedly connected to the side tube body (61), and the other end is fixedly connected to the anti-failure component (62); the reset element (66) is sleeved on the telescopic rod (65); one end of the reset element (66) is fixedly connected to the side tube body (61), and the other end is fixedly connected to the anti-failure component (62).

5. The discharge valve of the mechanical fusion machine according to claim 2, characterized in that: The sealing ring anti-failure assembly (6) comprises an auxiliary plate (67), the auxiliary plate (67) and the partition plate (641) are fixedly connected, and the auxiliary plate (67) is located between the sealing member (611) and the protective member (64), and the auxiliary plate (67) is used to guide the anti-failure member (62) to move when positive pressure is applied, and to separate the anti-failure member (62) from the auxiliary plate (67) to generate vibration when negative pressure is applied.

6. The discharge valve of the mechanical fusion machine according to claim 1, characterized in that: The magnet (74) can move the plug (71) by magnetic attraction so that the weight-reducing cavity (23) and the connecting pipe body (3) are connected, and the bottom of the cleaning hole (24) has a guide surface (241) that tilts downward from the periphery of the valve core (2) toward the center.

7. The discharge valve of the mechanical fusion machine according to claim 1, characterized in that: The drive assembly (5) comprises a cylinder body (51), a piston (52), a piston rod (53) and a traction member (54); the cylinder body (51) is fixedly connected to the connecting tube body (3); the piston (52) is slidably arranged in the cylinder body (51); one end of the piston rod (53) is rotatably connected to the piston (52); the other end of the piston rod (53) passes through the cylinder body (51) and the connecting tube body (3) and is fixedly connected to the valve core (2); a guide groove (531) is provided on the outer wall surface of the piston rod (53); the guide groove (531) comprises a spiral groove; the traction member (54) is fixedly connected to the connecting tube body (3); a traction section of the traction member (54) is located in the spiral groove; and the traction member (54) can drive the valve core (2) to rotate in a circumferential direction when the valve core (2) moves up and down.

8. The discharge valve of the mechanical fusion machine according to claim 1, characterized in that: The discharge pipe body (4) is provided with a control valve (41) for controlling the on and off of the discharge pipe body (4).

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