阅读说明：本技术 卸料阀 (Discharge valve ) 是由 吴荣湘 于 2019-08-26 设计创作，主要内容包括：本发明公开了一种卸料阀,包括：两个阀体组件和储料管。每个阀体组件均包括：阀体、阀座、阀板和驱动装置,阀体上设有相连通的第一料口和第二料口,阀座设置于第一料口,阀座设置有第一锋利面,驱动装置驱动阀板相对阀座运动,阀板可相对驱动装置转动,阀板设置有与第一锋利面剪切配合的第二锋利面,储料管的一端与其中一个阀体组件的第二料口相连,储料管的另一端与另一个阀体组件的第一料口相连。根据本发明的卸料阀,阀板可以相对驱动装置自转以使第一锋利面与第二锋利面剪切配合,由此可以将第一料口处的杂物切断,还可以将阀出口处的杂物推出,从而可以使阀板对第一料口进行紧密密封,大大提升了卸料阀的密封性能。(The invention discloses a discharge valve, comprising: two valve body assemblies and a storage tube. Each valve body assembly includes: the valve body is provided with a first material opening and a second material opening which are communicated, the valve seat is arranged at the first material opening, the valve seat is provided with a first sharp surface, the driving device drives the valve plate to move relative to the valve seat, the valve plate can rotate relative to the driving device, the valve plate is provided with a second sharp surface which is sheared and matched with the first sharp surface, one end of the storage pipe is connected with the second material opening of one of the valve body assemblies, and the other end of the storage pipe is connected with the first material opening of the other valve body assembly. According to the discharge valve, the valve plate can rotate relative to the driving device so that the first sharp surface and the second sharp surface are in shearing fit, therefore, sundries at the first material opening can be cut off, and the sundries at the valve outlet can be pushed out, so that the valve plate can tightly seal the first material opening, and the sealing performance of the discharge valve is greatly improved.)

1. A discharge valve, comprising:

two valve body assemblies, each said valve body assembly all includes: the valve comprises a valve body, a valve seat, a valve plate and a driving device, wherein a first material port and a second material port which are communicated with each other are arranged on the valve body, the valve seat is arranged at the first material port, the valve seat is provided with a first sharp surface which extends along the circumferential direction of the valve seat, the driving device is connected with the valve plate so as to drive the valve plate to move relative to the valve seat, the valve plate can rotate relative to the driving device, the valve plate is provided with a second sharp surface which extends along the circumferential direction of the valve plate, and the first sharp surface is in shearing fit with the second sharp surface;

the discharge valve is provided with a material storage state and a material feeding state, and in the material storage state, the driving device drives the corresponding valve plate to move so as to open the first material opening at one end of the material storage pipe and close the first material opening at the other end of the material storage pipe; in the feeding state, the driving device drives the corresponding valve plate to move so as to close the first material opening at one end of the storage pipe and open the first material opening at the other end of the storage pipe.

2. A discharge valve according to claim 1, wherein said valve seat comprises: the first seat ring is arranged at one end, close to the valve plate, of the valve seat, is positioned at the radial outer side of the corresponding first material port and extends along the circumferential direction of the first material port, and the first sharp surface is arranged on the first seat ring;

the valve plate includes: the second seat circle on the valve plate with first seat circle is just to setting up, be equipped with on the second seat circle with first sharp face is just to setting up the sharp face of second.

3. Discharge valve according to claim 1, characterized in that said drive means comprise:

a driver;

a drive shaft connected to the driver for rotation by the driver,

and one end of the torsion bar is connected with the driving shaft, the other end of the torsion bar is rotationally connected with the valve plate, and the driving shaft drives the torsion bar to drive the valve plate to move.

4. The discharge valve of claim 3, wherein said torsion bar is provided with a rotary bearing at an end thereof remote from said drive shaft, said valve plate being rotatably coupled to said rotary bearing.

5. A discharge valve according to claim 3, wherein said drive means further comprises:

the thrust bearing and the spring seat are respectively sleeved on the driving shaft in an outer mode and are arranged at intervals in the axial direction of the driving shaft;

compression spring, the compression spring overcoat is in just be located in the drive shaft the outside of valve body, compression spring's axial both ends are stopped respectively and are supported thrust bearing with on the spring holder, the compression spring drive the drive shaft drives the valve plate with the disk seat laminating corresponds with sealed first material mouth.

6. The discharge valve of claim 5, wherein said valve plate is located below said valve seat and said thrust bearing is located above said compression spring.

7. A discharge valve according to claim 3, wherein said actuator is a pneumatic cylinder, and said drive means further comprises a crank pivotally connected at one end to said drive shaft and hingedly connected at the other end to said pneumatic cylinder.

8. A discharge valve according to claim 3, further comprising: the cooling jacket is sleeved on the driving shaft, and a first cooling passage for circulating cooling liquid is arranged in the cooling jacket.

9. The discharge valve in accordance with claim 8 in which said drive shaft is a hollow member to define a second cooling passage disposed in parallel with said first cooling passage, and both axial ends of said drive shaft are provided with a coolant inlet and a coolant outlet, respectively, communicating with said second cooling passage.

10. A discharge valve as claimed in claim 2, wherein said valve plate, said first seat ring and said second seat ring are all new ceramic material pieces.

Technical Field

The invention relates to the field of valve body equipment, in particular to a discharge valve.

Background

In the related art, a double-layer discharge valve for adding materials into an industrial furnace is proposed, which can add materials into the industrial furnace. But the double-layer discharge valve has poor sealing effect and is very easy to cause the phenomenon of material leakage. Moreover, when the double-layer discharge valve leaks, external air easily enters the furnace body, and the external air and fuel gas in the furnace body are mixed and then easily explode, so that potential safety hazards in actual production are increased.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. To this end, it is an object of the invention to provide a discharge valve which has the advantage of good sealing properties.

A discharge valve according to an embodiment of the present invention includes: two valve body assemblies, each said valve body assembly all includes: the valve comprises a valve body, a valve seat, a valve plate and a driving device, wherein a first material port and a second material port which are communicated with each other are arranged on the valve body, the valve seat is arranged at the first material port, the valve seat is provided with a first sharp surface which extends along the circumferential direction of the valve seat, the driving device is connected with the valve plate so as to drive the valve plate to move relative to the valve seat, the valve plate can rotate relative to the driving device, the valve plate is provided with a second sharp surface which extends along the circumferential direction of the valve plate, and the first sharp surface is in shearing fit with the second sharp surface; the discharge valve is provided with a material storage state and a material feeding state, and in the material storage state, the driving device drives the corresponding valve plate to move so as to open the first material opening at one end of the material storage pipe and close the first material opening at the other end of the material storage pipe; in the feeding state, the driving device drives the corresponding valve plate to move so as to close the first material opening at one end of the storage pipe and open the first material opening at the other end of the storage pipe.

According to the discharge valve provided by the embodiment of the invention, the first sharp surface is arranged on the valve seat, the second sharp surface is arranged on the valve plate, and the valve plate can rotate relative to the driving device to enable the first sharp surface and the second sharp surface to be in shearing fit, so that sundries at the first material port can be cut off, and sundries at the valve outlet can be pushed out, so that the valve plate can tightly seal the first material port, the leakage amount of materials can be reduced, external air can be prevented from entering the furnace body, and the use safety performance of the furnace body is greatly improved.

According to some embodiments of the invention, the valve seat comprises: the first seat ring is arranged at one end, close to the valve plate, of the valve seat, is positioned at the radial outer side of the corresponding first material port and extends along the circumferential direction of the first material port, and the first sharp surface is arranged on the first seat ring; the valve plate includes: the second seat circle on the valve plate with first seat circle is just to setting up, be equipped with on the second seat circle with first sharp face is just to setting up the sharp face of second.

According to some embodiments of the invention, the drive device comprises: a driver; the valve plate comprises a drive shaft, a torsion bar, a first end of the torsion bar and a second end of the torsion bar, wherein the drive shaft is connected with the driver so as to be driven by the driver to rotate, one end of the torsion bar is connected with the drive shaft, the other end of the torsion bar is connected with the valve plate in a rotating mode, and the drive shaft drives the torsion bar to drive the valve plate to move.

In some embodiments of the invention, an end of the torsion bar remote from the drive shaft is provided with a rotary bearing, and the valve plate is rotationally coupled to the rotary bearing.

In some embodiments of the invention, the driving device further comprises: the thrust bearing and the spring seat are respectively sleeved on the driving shaft in an outer mode and are arranged at intervals in the axial direction of the driving shaft; compression spring, the compression spring overcoat is in just be located in the drive shaft the outside of valve body, compression spring's axial both ends are stopped respectively and are supported thrust bearing with on the spring holder, the compression spring drive the drive shaft drives the valve plate with the disk seat laminating corresponds with sealed first material mouth.

In some embodiments of the invention, the valve plate is located below the valve seat and the thrust bearing is located above the compression spring.

In some embodiments of the invention, the actuator is a pneumatic cylinder, and the drive device further comprises a crank, one end of the crank being pivotally connected to the drive shaft, the other end of the crank being pivotally connected to the pneumatic cylinder.

In some embodiments of the invention, the discharge valve further comprises: the cooling jacket is sleeved on the driving shaft, and a first cooling passage for circulating cooling liquid is arranged in the cooling jacket.

In some embodiments of the present invention, the drive shaft is a hollow member to define a second cooling passage, and both ends of the drive shaft in the axial direction are respectively provided with a cooling fluid inlet and a cooling fluid outlet which are communicated with the second cooling passage.

In some embodiments of the invention, at least one of the valve plate, the first race, and the second race is a new piece of ceramic material.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic view of the overall construction of a discharge valve according to one embodiment of the present invention;

FIG. 2 is a schematic structural view of a valve body assembly according to an embodiment of the present invention;

FIG. 3 is a partial schematic structural view of a valve body assembly according to an embodiment of the present invention;

FIG. 4 is a top view of a valve body assembly according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of the cooling system of the discharge valve according to one embodiment of the present invention.

Reference numerals:

a discharge valve (100) is provided,

a valve body assembly 1, a first valve body assembly 1a, a second valve body assembly 1b,

the valve body 11, the first port 111, the second port 112,

the position of the valve seat 12, the first seat ring 121,

the valve plate 13, the second race 131,

the driving device 14, the driver 141, the driving shaft 142, the second cooling passage 1421, the coolant inlet 1421a, the coolant outlet 1421b, the torsion bar 143, the rotary bearing 144, the thrust bearing 145, the spring seat 146, the compression spring 147, the crank 148,

cooling jacket 15, first inlet pipe 151, transfer pipe 152, first cooling channel 153, first outlet pipe 154, second inlet pipe 155, second outlet pipe 156,

the cover 16, the sleeve 17,

a storage pipe 2.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

A discharge valve 100 according to an embodiment of the present invention is described below with reference to fig. 1-4.

As shown in fig. 1 to 2, a discharge valve 100 according to an embodiment of the present invention includes: two valve body assemblies 1 and a storage pipe 2.

Wherein, each valve body assembly 1 can include: the valve comprises a valve body 11, a valve seat 12, a valve plate 13 and a driving device 14, wherein the valve body 11 can be provided with a first material port 111 and a second material port 112 which are communicated with each other, materials can enter the valve body 11 through the first material port 111, and then the materials can be discharged through the second material port 112. The valve seat 12 may be provided at the first port 111, the valve seat 12 may be provided with a first sharp surface extending in a circumferential direction thereof, and the driving device 14 may be connected to the valve plate 13 to drive the valve plate 13 to move relative to the valve seat 12, whereby the valve plate 13 may open or close the first port 111. The valve plate 13 is rotatable relative to the drive means 14, and the valve plate 13 may be provided with a second sharpened surface extending in the circumferential direction thereof, the first sharpened surface being in shear engagement with the second sharpened surface.

Specifically, the driving device 14 may drive the valve plate 13 to move so that the valve plate 13 cooperates with the valve seat 12 to open or close the first material port 111, and the valve plate 13 may rotate with respect to the driving device 14. When the driving device 14 drives the valve plate 13 to be attached to the valve seat 12, the valve plate 13 rotates relative to the driving device 14, the first sharp surface and the second sharp surface are in shearing fit, therefore, sundries at the position of the first material opening 111 can be cut off, the valve plate 13 can tightly seal the first material opening 111, the sealing performance of the discharge valve 100 can be improved, and the leakage amount of the discharge valve 100 is greatly reduced.

Alternatively, the circumferential side wall of the valve seat 12 close to the end surface of the valve plate 13 may not be provided with a chamfer, so that a sharp first cut may be formed in the valve seat 12, and the side surface of the first cut is a first sharp surface. Similarly, the circumferential side wall of the valve plate 13 close to the end surface of one side of the valve seat 12 may not be provided with a chamfer, so that a sharp second notch may be formed on the valve plate 13, and the side surface of the second notch is a second sharp surface. The first and second sharp faces may be understood approximately as the two cutting faces of the scissors, and the "cutting fit" in the above description may be understood as: the first and second sharpened surfaces face toward each other and shear the debris at the first opening 111.

As shown in fig. 1, one end of the storage tube 2 may be connected to the second material port 112 of one of the valve body assemblies 1, the other end of the storage tube 2 may be connected to the first material port 111 of the other valve body assembly 1, and the discharge valve 100 may have a storage state in which the driving device 14 may drive the corresponding valve plate 13 to move to open the first material port 111 at one end of the storage tube 2 and close the first material port 111 at the other end of the storage tube 2; in the feeding state, the driving device 14 can drive the corresponding valve plate 13 to move to close the first port 111 at one end of the stock pipe 2 and open the first port 111 at the other end of the stock pipe 2.

For convenience of understanding and description, the valve body assembly 1 positioned above in fig. 1 is referred to as a first valve body assembly 1a, and the valve body assembly 1 positioned below in fig. 1 is referred to as a second valve body assembly 1 b. Wherein, the upper end of storage pipe 2 communicates with the second material mouth 112 on the first valve body subassembly 1a, and the lower extreme of storage pipe 2 can communicate with the first material mouth 111 on the second valve body subassembly 1 b. The first valve body assembly 1a may be provided outside the furnace body, and the second valve body assembly 1b may be provided inside the furnace body.

When the discharge valve 100 is in the stock state, the valve plate 13 in the first valve body assembly 1a opens its first port 111, and the valve plate 13 in the second valve body assembly 1b closes its first port 111. The material can enter the storage pipe 2 through the first material port 111 and the second material port 112 on the first valve body assembly 1a in sequence. After the material in the storage pipe 2 is filled, the valve plate 13 in the first valve body assembly 1a closes the first material opening 111, the valve plate 13 in the second valve body assembly 1b opens the first material opening 111, and the material in the storage pipe 2 can enter the furnace body through the second material opening 112.

When the valve plate 13 closes the first material opening 111, the valve plate 13 can rotate relative to the driving device 14, and the second sharp surface on the valve plate 13 is in shearing fit with the first sharp surface on the valve seat 12, so that sundries at the first material opening 111 can be cut off. Moreover, the valve plate 3 can also push the material at the valve outlet 12, so that the material can be pushed out from the valve outlet 12, the valve plate 13 can be tightly sealed at the first material opening 111, the sealing effect of the discharge valve 100 is improved, the leakage amount of the material can be reduced, the external air can be prevented from entering the furnace body, and the use safety performance of the furnace body is greatly improved.

According to the discharge valve 100 provided by the embodiment of the invention, the valve plate 13 can rotate relative to the driving device 14 to enable the first sharp surface and the second sharp surface to be in shearing fit by arranging the first sharp surface on the valve seat 12 and arranging the second sharp surface on the valve plate 13, so that sundries at the first material opening 111 can be cut off, the sundries at the valve outlet 12 can be pushed out, the valve plate 13 can be enabled to tightly seal the first material opening 111, the leakage amount of materials can be reduced, external air can be prevented from entering the furnace body, and the use safety performance of the furnace body is greatly improved.

According to some embodiments of the present invention, the valve seat 12 may include a first seat ring 121, the first seat ring 121 may be disposed at an end of the valve seat 12 close to the valve plate 13, the first seat ring 121 is located radially outside the corresponding first material opening 111 and extends in a circumferential direction of the first material opening 111, a first sharp surface may be disposed on the first seat ring 121, the valve plate 13 may include a second seat ring 131, the second seat ring 131 on the valve plate 13 may be disposed opposite to the first seat ring 121, and a second sharp surface disposed opposite to the first sharp surface may be disposed on the second seat ring 131.

Thus, with the above arrangement, the first sharp surface is provided on the first seat ring 121 and the second sharp surface is provided on the second seat ring 131, so that the difficulty in processing the first sharp surface and the second sharp surface can be reduced, the first sharp surface can be processed on the first seat ring 121 at first, and then the processed first seat ring 121 is mounted on the valve seat 12. It is possible to first machine the second sharpened surface on the second race 131 and then mount the machined second race 131 on the valve plate 13.

Alternatively, a first screw hole may be provided in the first seat ring 121, a second screw hole may be provided in the valve seat 12 to be disposed opposite to the first screw hole, and then screws may be used to screw-fit the first screw hole and the second screw hole, respectively, to mount the first seat ring 121 on the valve seat 12.

Alternatively, a third screw hole may be provided in the second seat ring 131, a fourth screw hole disposed opposite to the third screw hole may be provided in the valve plate 13, and then screws may be respectively screw-fitted to the third screw hole and the fourth screw hole to mount the second seat ring 131 on the valve plate 13.

The manner of assembling the first race 121 and the valve seat 12 and the second race 131 and the valve plate 13 is not limited to this. For example, a first insertion groove may be provided in the valve seat 12, a second insertion groove may be provided in the valve plate 13, the first race 121 may be inserted into the first insertion groove by interference fit, and the second race 131 may be inserted into the second insertion groove by interference fit.

As shown in fig. 2, according to some embodiments of the present invention, drive device 14 may include an actuator 141, a drive shaft 142, and a torsion bar 143. Drive shaft 142 may be connected to actuator 141 for rotation by actuator 141, one end of torsion bar 143 may be connected to drive shaft 142, the other end of torsion bar 143 may be connected to valve plate 13, and drive shaft 142 may drive torsion bar 143 to move valve plate 13. Specifically, the driving shaft 142 may rotate synchronously with the torsion bar 143, and when the driver 141 drives the driving shaft 142 to rotate, the driving shaft 142 and the torsion bar 143 rotate synchronously to move the valve plate 13, thereby opening or closing the first port 111 with the valve plate 13. The torsion bar 143 moves the valve plate 13 and the valve plate 13 can rotate relative to the torsion bar 143, so that the first sharp surface and the second sharp surface can be ensured to be in shear fit. Therefore, through the arrangement, the structural design of the driving device 14 can be simpler, and the operation is more convenient.

Alternatively, the driving shaft 142 may be a heat-resistant steel material having good heat resistance, and the deformation amount of the heat-resistant steel material under high temperature conditions is very small, so that the operation stability of the driving device 14 may be improved.

As shown in fig. 2, in some embodiments of the present invention, an end of the torsion bar 143 away from the driving shaft 142 may be provided with a rotation bearing 144, and the valve plate 13 may be rotatably connected to the rotation bearing 144, so that the rotational fit between the valve plate 13 and the torsion bar 143 may be smoother, the valve plate 13 may be ensured to rotate freely relative to the torsion bar 143, and the fit tightness between the valve plate 13 and the first material opening 111 may be ensured.

Optionally, the valve body assembly 1 may further include a driving member (not shown) connected to a pivot shaft of the valve plate 13, the driving member may drive the valve plate 13 to rotate relative to the torsion bar 143, thereby ensuring that the first and second sharp surfaces are in shear engagement to shear debris at the first port 111, and enabling the valve plate 13 to completely seal the first port 111.

As shown in fig. 1-2, in some embodiments of the present invention, the driving device 14 may further include: thrust bearing 145, spring holder 146 and compression spring 147, thrust bearing 145 and spring holder 146 can overlap respectively on drive shaft 142 and set up at the axial direction interval of drive shaft 142, compression spring 147 can overlap on drive shaft 142 and be located the outside of valve body 11, the axial both ends of compression spring 147 can end respectively on thrust bearing 145 and spring holder 146, compression spring 147 can drive shaft 142 and drive valve plate 13 and the laminating of valve seat 12 with sealed corresponding first material mouth 111. From this, through above-mentioned setting, can make the cooperation structure between valve plate 13 and the first material mouth 111 inseparabler to can promote the sealing performance of discharge valve 100, reduce the volume of revealing.

It can be understood that, by providing the thrust bearing 145, the thrust bearing 145 can transmit the elastic force of the compression spring 147 to the driving shaft 142, and the driving shaft 142 can move in the axial direction thereof in synchronization with the torsion bar 143, thereby bringing the valve plate 13 into close contact with the valve seat 12, and thus improving the sealing performance of the discharge valve 100. Moreover, the thrust bearing 145 may also prevent the compression spring 147 from rotating in synchronization with the driving shaft 142, so that smooth operation of the driving device 14 may be ensured.

As shown in fig. 2, in some embodiments of the present invention, the valve plate 13 may be located below the valve seat 12, and the thrust bearing 145 may be located above the compression spring 147, so that the valve plate 13 may be completely isolated from the material, and the material may be prevented from being accumulated on the valve plate 13, thereby improving the operational smoothness of the valve body assembly 1.

In the specific example shown in fig. 1, the valve body assembly 1 may further include a cover 16, the cover 16 may be disposed above the valve body 11 and cooperate with the valve body 11 to define an assembly space, the torsion bar 143 and the valve plate 13 are disposed in the assembly space, one end of the driving shaft 142 passes through the cover 16 and is located outside the valve body 11, the thrust bearing 145, the compression spring 147, and the spring seat 146 are all located above the cover 16, and a lower end of the spring seat 146 is connected to the cover 16. Therefore, the compression spring 147 is located outside the valve body 11, so that the influence of high temperature on the compression spring 147 can be reduced, the phenomenon of high temperature failure of the compression spring 147 can be prevented, and the sealing effect of the valve body assembly 1 can be ensured.

Alternatively, both the cover 16 and the valve body 11 can be designed in an oval shape, which saves processing material and space, and makes the overall structure of the discharge valve 100 more compact. Alternatively, both the valve body 11 and the tank cover 16 may be heat-resistant steel material having good heat resistance, and the amount of deformation of the heat-resistant steel material under high temperature conditions is small, whereby the operational stability and the structural sealing performance of the discharge valve 100 can be ensured.

As shown in fig. 4, in some embodiments of the present invention, the driver 141 may be an air cylinder, the driving device 14 may further include a crank 148, one end of the crank 148 may be pivotally connected to the driving shaft 142, and the other end of the crank 148 may be hinged to the air cylinder, thereby simplifying the engagement between the driver 141 and the driving shaft 142 and allowing the driving device 14 to operate more smoothly.

The manner of installing the driver 141 and the manner of fitting the driver 141 and the drive shaft 142 are not limited to these. For example, the driver 141 may be a motor, and a motor shaft of the motor may be keyed to the driving shaft 142 to drive the driving shaft 142 to rotate.

As shown in fig. 3, in some embodiments of the present invention, the discharge valve 100 may further include a cooling jacket 15, the cooling jacket 15 may be sleeved on the driving shaft 142, and a first cooling passage 153 for circulating a cooling fluid may be disposed in the cooling jacket 15, so that the cooling fluid in the first cooling passage 153 may sufficiently cool the driving shaft 142, thereby reducing an operating temperature of the driving shaft 142 and improving an operation stability of the driving device 14.

As shown in fig. 3, in some embodiments of the present invention, the driving shaft 142 may be a hollow member to define a second cooling passage 1421 disposed in parallel with the first cooling passage 153, both axial ends of the driving shaft 142 may be respectively provided with a cooling fluid inlet 1421a and a cooling fluid outlet 1421b communicated with the second cooling passage 1421, the cooling fluid may be introduced into the second cooling passage 1421 through the cooling fluid inlet 1421a, the driving shaft 142 may be cooled while the cooling fluid circulates in the second cooling passage 1421, and then the cooling fluid may be discharged through the cooling fluid outlet 1421 b. Thus, the drive shaft 142 can be sufficiently cooled by the above arrangement, and the operation stability of the drive device 14 can be improved.

The cooling system of the discharge valve 100 of the present invention is described in detail below with reference to fig. 3. The cooling system comprises two cooling jackets 15 which are arranged at intervals in the up-down direction, a shaft sleeve 17 is arranged on the driving device 14, and the two cooling jackets 15 are sleeved on the corresponding shaft sleeves 17. Each of the cooling jackets 15 has a first cooling passage 153 provided therein for circulating a cooling liquid. The cooling system further comprises a first liquid inlet pipe 151, a delivery pipe 152 and a first liquid outlet pipe 154, wherein the cooling liquid can enter the first cooling passage 153 in one of the cooling jackets 15 through the first liquid inlet pipe 151, and then enter the first cooling passage 153 in the other cooling jacket 15 through the delivery pipe 152 after circulating, and finally the cooling liquid is discharged through the first liquid outlet pipe 151.

The driving shaft 142 is a hollow member to define a second cooling passage 1421 disposed in parallel with the first cooling passage 153, the cooling system further includes a second liquid inlet pipe 155 and a second liquid outlet pipe 156, and both axial ends of the driving shaft 142 are respectively provided with a cooling liquid inlet 1421a and a cooling liquid outlet 1421b communicated with the second cooling passage 1421. The cooling liquid may sequentially enter the second cooling path 1421 through the second liquid inlet pipe 155 and the cooling liquid inlet 1421a, the driving shaft 142 may be cooled by the cooling liquid while the cooling liquid circulates in the second cooling path 1421, and then the cooling liquid may be discharged through the cooling liquid outlet 1421b and the second liquid outlet pipe 156.

Therefore, through the arrangement, when the cooling system works, the first liquid inlet pipe 151 and the second liquid inlet pipe 155 are arranged in parallel and respectively convey cooling liquid to the first cooling passage 153 and the second cooling passage 1421, the cooling liquid in the first cooling passage 153 circulates in the cooling jacket 15 to cool the outer surface of the driving shaft 142, and the cooling liquid in the second cooling passage 1421 can cool the inside of the driving shaft 142, so that the working temperature of the driving shaft 142 can be greatly reduced, the running stability of the driving shaft 142 can be improved, and the service life of the driving shaft 142 can be prolonged.

Alternatively, the cooling liquid may be water, and the cooling liquid may also be other liquids having a cooling effect, and the present invention is not particularly limited thereto.

In some embodiments of the present invention, the valve plate 13, the first race 121, and the second race 131 may each be a new piece of ceramic material. The novel ceramic material is an inorganic material with a fine crystalline structure, which is prepared by taking an artificially synthesized high-purity inorganic compound as a raw material and carrying out processes such as molding, sintering and other treatments under strictly controlled conditions. The novel ceramic material has a series of excellent physical, chemical and biological properties. Wherein, in the aspects of thermal and mechanical properties, the novel ceramic material has the advantages of high temperature resistance, high hardness, wear resistance and the like. Therefore, through setting valve plate 13, first seat circle 121 and second seat circle 131 to novel ceramic material spare, can promote high temperature resistant, the wear-resisting performance of discharge valve 100, the occasion of high temperature (more than 800 ℃) can be applied to discharge valve 100, but also can have longer life, has promoted discharge valve 100's practicality greatly.

Alternatively, the first race 121 and the second race 131 can be processed by an isostatic pressing process, so that the hardness and the wear resistance of the first race 121 and the second race 131 can be greatly improved, the service life of the first race 121 and the second race 131 can be prolonged, and the fit tightness between the valve plate 13 and the first material opening 111 can be improved.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "axial", "radial", "circumferential", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.