Discharge valve

Abstract

The present invention discloses a discharging valve, comprising: two valve body assemblies and a material storage pipe. Each valve body assembly includes: a valve body, a valve seat, a valve plate and a driving device. A first material port and a second material port which are communicated with each other are provided on the valve body. The valve seat is arranged at the first material port. 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 shearingly matched with the first sharp surface. One end of the material storage pipe is connected to the second material port of one of the valve body assemblies, and the other end of the material storage pipe is connected to the first material port of the other valve body assembly. According to the discharging valve of the present invention, the valve plate can rotate relative to the driving device to enable the first sharp surface to be shearingly matched with the second sharp surface, whereby sundries at the first material port can be cut off, and sundries at the valve outlet can also be pushed out, so that the valve plate can tightly seal the first material port, greatly improving the sealing performance of the discharging valve.

Description

Technical Field

[0001] The present invention relates to the field of valve body equipment, and more particularly to a discharging valve. Background Art

[0002] In the related art, a double-layer discharging valve for adding materials into an industrial furnace is proposed. The double-layer discharging valve can add materials into the industrial furnace. However, the sealing effect of the double-layer discharging valve is poor, and it is very easy to have the phenomenon of material leakage. Moreover, when the double-layer discharging valve leaks, external air easily enters the furnace body. After the external air is mixed with the gas in the furnace body, it is very easy to explode, thus increasing the potential safety hazard in actual production. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. For this purpose, an object of the present invention is to provide a discharging valve, and the discharging valve has the advantage of good sealing performance.

[0004] The discharging valve according to an embodiment of the present invention includes: two valve body assemblies, each of the valve body assemblies includes: a valve body, a valve seat, a valve plate and a driving device. A first material port and a second material port communicating with each other are provided on the valve body. The valve seat is arranged at the first material port. The valve seat is provided with a first sharp surface extending along its circumferential direction. The driving device is connected to the valve plate 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 extending along its circumferential direction. The first sharp surface and the second sharp surface are in shear fit; a storage pipe, one end of the storage pipe is connected to the second material port of one of the valve body assemblies, and the other end of the storage pipe is connected to the first material port of the other valve body assembly. The discharging valve has a storage state and a feeding state. In the storage state, the driving device drives the corresponding valve plate to move to open the first material port at one end of the storage pipe and close the first material port at the other end of the storage pipe; in the feeding state, the driving device drives the corresponding valve plate to move to close the first material port at one end of the storage pipe and open the first material port at the other end of the storage pipe.

[0005] According to the discharging valve of the embodiment of the present invention, by providing a first sharp surface on the valve seat and a second sharp surface on the valve plate, the valve plate can rotate relative to the driving device so that the first sharp surface and the second sharp surface are in shear fit. Thus, not only can the sundries at the first material port be cut off, but also the sundries at the valve outlet can be pushed out, so that the valve plate can tightly seal the first material port, which can not only reduce the leakage amount of materials, but also prevent external air from entering the furnace body, greatly improving the safety performance of the furnace body during use.

[0006] According to some embodiments of the present invention, the valve seat includes: a first seat ring provided at one end of the valve seat close to the valve plate. The first seat ring is located radially outside the corresponding first material port and extends along the circumferential direction of the first material port. The first sharp surface is provided on the first seat ring. The valve plate includes: a second seat ring. The second seat ring on the valve plate is disposed opposite to the first seat ring, and the second sharp surface disposed opposite to the first sharp surface is provided on the second seat ring.

[0007] According to some embodiments of the present invention, the driving device includes: a driver; a driving shaft connected to the driver to be driven to rotate by the driver, and a torsion bar. One end of the torsion bar is connected to the driving shaft, and the other end of the torsion bar is rotatably connected to the valve plate. The driving shaft drives the torsion bar to drive the valve plate to move.

[0008] In some embodiments of the present invention, a rotating bearing is provided at one end of the torsion bar away from the driving shaft, and the valve plate is rotatably connected to the rotating bearing.

[0009] In some embodiments of the present invention, the driving device further includes: a thrust bearing and a spring seat. The thrust bearing and the spring seat are respectively sleeved on the driving shaft and are spaced apart in the axial direction of the driving shaft; a compression spring. The compression spring is sleeved on the driving shaft and is located outside the valve body. Axial ends of the compression spring respectively abut against the thrust bearing and the spring seat. The compression spring drives the driving shaft to drive the valve plate to fit with the valve seat to seal the corresponding first material port.

[0010] In some embodiments of the present invention, the valve plate is located below the valve seat, and the thrust bearing is located above the compression spring.

[0011] In some embodiments of the present invention, the driver is a cylinder, and the driving device further includes a crank. One end of the crank is pivotally connected to the driving shaft, and the other end of the crank is pivotally connected to the cylinder.

[0012] In some embodiments of the present invention, the discharging valve further includes: a cooling sleeve sleeved on the driving shaft, and a first cooling passage for circulating coolant is provided in the cooling sleeve.

[0013] In some embodiments of the present invention, the driving shaft is a hollow member to define a second cooling passage, and a coolant inlet and a coolant outlet respectively connected to the second cooling passage are provided at axial ends of the driving shaft.

[0014] In some embodiments of the present invention, at least one of the valve plate, the first seat ring, and the second seat ring is a novel ceramic material part.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. Description of the Drawings

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 is a schematic diagram of the overall structure of a discharge valve according to an embodiment of the present invention;

[0018] Figure 2 is a schematic diagram of the structure of a valve body assembly according to an embodiment of the present invention;

[0019] Figure 3 is a schematic diagram of a partial structure of a valve body assembly according to an embodiment of the present invention;

[0020] Figure 4 is a top view of a valve body assembly according to an embodiment of the present invention;

[0021] Figure 5 is a schematic diagram of the structure of a cooling system of a discharge valve according to an embodiment of the present invention.

[0022] Reference Signs:

[0023] Discharge valve 100,

[0024] Valve body assembly 1, first valve body assembly 1a, second valve body assembly 1b,

[0025] Valve body 11, first material port 111, second material port 112,

[0026] Valve seat 12, first seat ring 121,

[0027] Valve plate 13, second seat ring 131,

[0028] Drive device 14, driver 141, drive shaft 142, second cooling passage 1421, coolant inlet 1421a, coolant outlet 1421b, torsion bar 143, rotating bearing 144, thrust bearing 145, spring seat 146, compression spring 147, crank 148,

[0029] Cooling sleeve 15, first liquid inlet pipe 151, transfer pipe 152, first cooling passage 153, first liquid outlet pipe 154, second liquid inlet pipe 155, second liquid outlet pipe 156,

[0030] Box cover 16, bushing 17,

[0031] Storage pipe 2. Specific Embodiments

[0032] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0033] Reference will be made below to Figures 1 - 4 describe the discharge valve 100 according to an embodiment of the present invention.

[0034] As Figures 1 - 2 shown, the discharge valve 100 according to an embodiment of the present invention includes: two valve body assemblies 1 and a storage pipe 2.

[0035] Each valve body assembly 1 may include: a valve body 11, a valve seat 12, a valve plate 13, and a driving device 14. A first material port 111 and a second material port 112 may be provided on the valve body 11 and communicate with each other. Materials may enter the valve body 11 through the first material port 111, and then the materials may be discharged through the second material port 112. The valve seat 12 may be disposed at the first material port 111, and a first sharp surface extending along its circumferential direction may be provided on the valve seat 12. 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. Thus, the valve plate 13 may open or close the first material port 111. The valve plate 13 may rotate relative to the driving device 14, and a second sharp surface extending along its circumferential direction may be provided on the valve plate 13. The first sharp surface may be in shear fit with the second sharp surface.

[0036] 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 relative to the driving device 14. When the driving device 14 drives the valve plate 13 to fit with the valve seat 12, the valve plate 13 rotates relative to the driving device 14, and the first sharp surface and the second sharp surface are in shear fit. Thus, the sundries at the first material port 111 may be cut off, and the valve plate 13 may tightly seal the first material port 111, thereby improving the sealing performance of the discharge valve 100 and greatly reducing the leakage amount of the discharge valve 100.

[0037] Optionally, the circumferential side wall of the end face of the valve seat 12 close to the valve plate 13 may not be provided with a chamfer, so that a sharp first cut can be formed on the valve seat 12, and the side face of the first cut is the first sharp face. Similarly, the circumferential side wall of the end face of the valve plate 13 close to the valve seat 12 may not be provided with a chamfer, so that a sharp second cut can be formed on the valve plate 13, and the side face of the second cut is the second sharp face. The first sharp face and the second sharp face can be approximately understood as the two shearing faces of a pair of scissors, and the "shearing fit" in the above description can be understood as: the first sharp face and the second sharp face approach each other and cut off the sundries at the first material port 111.

[0038] As Figure 1 shown, one end of the storage pipe 2 can be connected to the second material port 112 of one of the valve body assemblies 1, and the other end of the storage pipe 2 can be connected to the first material port 111 of the other valve body assembly 1. The discharge valve 100 can have a storage state and a feeding state. In the storage state, the driving device 14 can drive the corresponding valve plate 13 to move to open the first material port 111 at one end of the storage pipe 2 and close the first material port 111 at the other end of the storage pipe 2; in the feeding state, the driving device 14 can drive the corresponding valve plate 13 to move to close the first material port 111 at one end of the storage pipe 2 and open the first material port 111 at the other end of the storage pipe 2.

[0039] For the convenience of understanding and description, the Figure 1 valve body assembly 1 located above is called the first valve body assembly 1a, and the Figure 1 valve body assembly 1 located below is called the second valve body assembly 1b. Wherein, the upper end of the storage pipe 2 communicates with the second material port 112 on the first valve body assembly 1a, and the lower end of the storage pipe 2 can communicate with the first material port 111 on the second valve body assembly 1b. The first valve body assembly 1a can be arranged outside the furnace body, and the second valve body assembly 1b can be arranged inside the furnace body.

[0040] When the discharge valve 100 is in the storage state, the valve plate 13 in the first valve body assembly 1a opens its first material port 111, and the valve plate 13 in the second valve body assembly 1b closes its first material port 111. The material can enter the storage pipe 2 successively through the first material port 111 and the second material port 112 on the first valve body assembly 1a. When the storage pipe 2 is filled with material, the valve plate 13 in the first valve body assembly 1a closes its first material port 111, and the valve plate 13 in the second valve body assembly 1b opens its first material port 111, and the material in the storage pipe 2 can enter the furnace body through the second material port 112.

[0041] Wherein, when the valve plate 13 closes the first material port 111, the valve plate 13 can rotate relative to the driving device 14, and the second sharp surface on the valve plate 13 shears and cooperates with the first sharp surface on the valve seat 12, whereby the sundries at the first material port 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. Thus, the valve plate 13 can tightly seal the first material port 111, improving the sealing effect of the discharge valve 100. It can not only reduce the leakage of the material, but also prevent external air from entering the furnace body, greatly improving the safety performance of the furnace body during use.

[0042] For the discharge valve 100 according to the embodiment of the present invention, by providing the first sharp surface on the valve seat 12 and the second sharp surface on the valve plate 13, the valve plate 13 can rotate relative to the driving device 14 so that the first sharp surface shears and cooperates with the second sharp surface, whereby the sundries at the first material port 111 can be cut off, and the sundries at the valve outlet 12 can also be pushed out. The valve plate 13 can tightly seal the first material port 111, which can not only reduce the leakage of the material, but also prevent external air from entering the furnace body, greatly improving the safety performance of the furnace body during use.

[0043] 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 provided at one 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 port 111 and extends along the circumferential direction of the first material port 111. The first sharp surface may be provided 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 the second sharp surface disposed opposite to the first sharp surface may be provided on the second seat ring 131.

[0044] Thus, through the above settings, by providing the first sharp surface on the first seat ring 121 and the second sharp surface on the second seat ring 131, the processing difficulty of 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 first, and then the processed first seat ring 121 can be installed on the valve seat 12. The second sharp surface can be processed on the second seat ring 131 first, and then the processed second seat ring 131 can be installed on the valve plate 13.

[0045] Optionally, first screw holes may be provided on the first seat ring 121, and second screw holes disposed opposite to the first screw holes may be provided on the valve seat 12. Then, screws can be used to threadedly cooperate with the first screw holes and the second screw holes respectively to install the first seat ring 121 on the valve seat 12.

[0046] Optionally, a third screw hole may be provided on the second seat ring 131, a fourth screw hole may be provided on the valve plate 13 and aligned with the third screw hole, and then screws may be used to threadedly engage with the third screw hole and the fourth screw hole respectively to mount the second seat ring 131 on the valve plate 13.

[0047] It should be noted that the assembly methods between the first seat ring 121 and the valve seat 12, and between the second seat ring 131 and the valve plate 13 are not limited to this. For example, a first embedding groove may be provided on the valve seat 12, a second embedding groove may be provided on the valve plate 13, the first seat ring 121 may be embedded in the first embedding groove by an interference fit method, and the second seat ring 131 may be embedded in the second embedding groove by an interference fit method.

[0048] As Figure 2 shown, according to some embodiments of the present invention, the driving device 14 may include a driver 141, a driving shaft 142, and a torsion bar 143. The driving shaft 142 may be connected to the driver 141 to be driven to rotate by the driver 141. One end of the torsion bar 143 may be connected to the driving shaft 142, and the other end of the torsion bar 143 may be rotatably connected to the valve plate 13. The driving shaft 142 may drive the torsion bar 143 to drive the valve plate 13 to move. Specifically, the driving shaft 142 may rotate synchronously with the torsion bar 143. When the driver 141 drives the driving shaft 142 to rotate, the driving shaft 142 and the torsion bar 143 rotate synchronously to drive the valve plate 13 to move, thereby enabling the valve plate 13 to open or close the first material port 111. While the torsion bar 143 drives the valve plate 13 to move, the valve plate 13 may rotate relative to the torsion bar 143, so as to ensure that the first sharp surface and the second sharp surface can perform a shearing fit. Thus, through the above arrangement, the structural design of the driving device 14 can be made simpler and the operation more convenient.

[0049] Optionally, the driving shaft 142 may be made of a heat-resistant steel material. The heat-resistant steel material has good heat resistance, and the deformation amount generated by the heat-resistant steel material under high-temperature conditions is extremely small, thereby improving the running stability of the driving device 14.

[0050] As Figure 2 shown, in some embodiments of the present invention, a rotating bearing 144 may be provided at one end of the torsion bar 143 away from the driving shaft 142, and the valve plate 13 may be rotatably connected to the rotating bearing 144, thereby making the rotational fit between the valve plate 13 and the torsion bar 143 smoother, ensuring that the valve plate 13 can rotate freely relative to the torsion bar 143, and further ensuring the tightness of the fit between the valve plate 13 and the first material port 111.

[0051] Optionally, the valve body assembly 1 may further include a driving member (not shown in the figure). The driving member may be connected to the 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 sharp surface and the second sharp surface are sheared in cooperation to cut off the sundries at the first material port 111, and enabling the valve plate 13 to completely seal the first material port 111.

[0052] As Figures 1 - 2 shown, in some embodiments of the present invention, the driving device 14 may further include: a thrust bearing 145, a spring seat 146, and a compression spring 147. The thrust bearing 145 and the spring seat 146 may be respectively sleeved on the driving shaft 142 and are spaced apart in the axial direction of the driving shaft 142. The compression spring 147 may be sleeved on the driving shaft 142 and is located outside the valve body 11. The axial two ends of the compression spring 147 may respectively abut against the thrust bearing 145 and the spring seat 146. The compression spring 147 may drive the driving shaft 142 to drive the valve plate 13 to fit against the valve seat 12 to seal the corresponding first material port 111. Thus, through the above arrangement, the fitting structure between the valve plate 13 and the first material port 111 can be made more compact, thereby improving the sealing performance of the discharge valve 100 and reducing the leakage amount.

[0053] 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. The driving shaft 142 can move synchronously with the torsion bar 143 in its axial direction, thereby driving the valve plate 13 to fit tightly against the valve seat 12, thus improving the sealing performance of the discharge valve 100. Moreover, the thrust bearing 145 can also prevent the compression spring 147 from rotating synchronously with the driving shaft 142, thereby ensuring the smooth operation of the driving device 14.

[0054] As Figure 2 shown, 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. Thus, the valve plate 13 can be completely isolated from the material, preventing the material from accumulating on the valve plate 13, thereby improving the running smoothness of the valve body assembly 1.

[0055] In Figure 1In the specific example shown, the valve body assembly 1 may further include a box cover 16. The box 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 drive shaft 142 passes through the box 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 box cover 16, and the lower end of the spring seat 146 is connected to the box cover 16. Thus, the compression spring 147 located outside the valve body 11 can reduce the influence of high temperature on the compression spring 147, prevent the compression spring 147 from failing due to high temperature, and further ensure the sealing effect of the valve body assembly 1.

[0056] Optionally, both the box cover 16 and the valve body 11 can be designed as ellipses, which can save processing materials and occupied space, and make the overall structure of the discharge valve 100 more compact. Optionally, both the valve body 11 and the box cover 16 can be made of heat-resistant steel materials. Heat-resistant steel materials have good heat-resistant performance, and the deformation amount generated by heat-resistant steel materials under high temperature conditions is small. Thus, the operation stability and structural sealing performance of the discharge valve 100 can be ensured.

[0057] As Figure 4 shown, in some embodiments of the present invention, the driver 141 can be a cylinder, and the driving device 14 may further include a crank 148. One end of the crank 148 can be pivotally connected to the drive shaft 142, and the other end of the crank 148 can be hinged to the cylinder. Thus, the cooperation mode between the driver 141 and the drive shaft 142 can be made simpler, and the operation of the driving device 14 can be made smoother.

[0058] It should be noted that the setting mode of the driver 141 and the cooperation mode between the driver 141 and the drive shaft 142 are not limited to this. For example, the driver 141 can also be a motor, and the motor shaft of the motor can be key-connected to the drive shaft 142 to drive the drive shaft 142 to rotate.

[0059] As Figure 3 shown, in some embodiments of the present invention, the discharge valve 100 may further include a cooling sleeve 15. The cooling sleeve 15 can be sleeved outside the drive shaft 142, and a first cooling passage 153 for circulating coolant can be provided in the cooling sleeve 15. Thus, the coolant in the first cooling passage 153 can fully cool the drive shaft 142, thereby reducing the working temperature of the drive shaft 142 and improving the operation stability of the driving device 14.

[0060] As Figure 3As shown, in some embodiments of the present invention, the drive shaft 142 can be a hollow member to define a second cooling passage 1421 arranged in parallel with the first cooling passage 153. Coolant inlets 1421a and coolant outlets 1421b connected to the second cooling passage 1421 can be respectively provided at both axial ends of the drive shaft 142. Coolant can enter the second cooling passage 1421 through the coolant inlet 1421a. When the coolant flows through the second cooling passage 1421, it can cool the drive shaft 142, and then the coolant can be discharged through the coolant outlet 1421b. Thus, through the above arrangement, the drive shaft 142 can be fully cooled, and the operating stability of the drive device 14 can be improved.

[0061] The following will refer to Figure 3 Describe in detail the cooling system of the discharge valve 100 of the present invention. The cooling system includes two cooling sleeves 15 arranged at intervals in the vertical direction. A shaft sleeve 17 is provided on the drive device 14, and both cooling sleeves 15 are sleeved on the corresponding shaft sleeve 17. A first cooling passage 153 for circulating coolant is provided in each cooling sleeve 15. The cooling system further includes a first liquid inlet pipe 151, a transfer pipe 152, and a first liquid outlet pipe 154. Coolant can enter the first cooling passage 153 in one of the cooling sleeves 15 through the first liquid inlet pipe 151. After the coolant circulates, it enters the first cooling passage 153 in the other cooling sleeve 15 through the transfer pipe 152, and finally the coolant is discharged through the first liquid outlet pipe 151.

[0062] The drive shaft 142 is a hollow member to define a second cooling passage 1421 arranged 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. Coolant inlets 1421a and coolant outlets 1421b connected to the second cooling passage 1421 are respectively provided at both axial ends of the drive shaft 142. Coolant can sequentially enter the second cooling passage 1421 through the second liquid inlet pipe 155 and the coolant inlet 1421a. When the coolant flows through the second cooling passage 1421, it can cool the drive shaft 142, and then the coolant can be discharged through the coolant outlet 1421b and the second liquid outlet pipe 156.

[0063] Thus, through the above 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 supply coolant to the first cooling passage 153 and the second cooling passage 1421. The coolant in the first cooling passage 153 flows through the cooling sleeve 15 to cool the outer surface of the drive shaft 142, and the coolant in the second cooling passage 1421 can cool the inside of the drive shaft 142. Thus, the working temperature of the drive shaft 142 can be greatly reduced, which can not only improve the running smoothness of the drive shaft 142, but also extend the service life of the drive shaft 142.

[0064] Optionally, the coolant can be water, or it can be other liquids with a cooling effect. The present invention does not make specific limitations in this regard.

[0065] In some embodiments of the present invention, the valve plate 13, the first seat ring 121, and the second seat ring 131 can all be made of new ceramic material parts. New ceramic materials belong to a type of new material. New ceramic materials are made from artificially synthesized high-purity inorganic compounds and are processed through processes such as forming, sintering, and other treatments under strictly controlled conditions to produce inorganic materials with fine crystal structures. New ceramic materials have a series of excellent physical, chemical, and biological properties. Among them, in terms of thermal and mechanical properties, new ceramic materials have the advantages of high temperature resistance, high hardness, and wear resistance. Therefore, by setting the valve plate 13, the first seat ring 121, and the second seat ring 131 as new ceramic material parts, the high temperature resistance and wear resistance of the discharge valve 100 can be improved. The discharge valve 100 can be applied to high-temperature (above 800°C) occasions and can also have a long service life, greatly improving the practical performance of the discharge valve 100.

[0066] Optionally, the first seat ring 121 and the second seat ring 131 can be processed by an isostatic pressing process, which can greatly improve the hardness and wear resistance of the first seat ring 121 and the second seat ring 131, thereby extending the service life of the first seat ring 121 and the second seat ring 131 and improving the tight fit performance between the valve plate 13 and the first material port 111.

[0067] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it should not be construed as a limitation of the present invention. In addition, features defined with "first", "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0068] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0069] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0070] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A discharging valve, characterized in that, Comprising: Two valve body assemblies, each of the valve body assemblies comprising: a valve body, a valve seat, a valve plate and a driving device. A first material port and a second material port which are communicated with each other are provided on the valve body. The valve seat is arranged at the first material port. The valve seat is provided with a first sharp surface extending along its circumferential direction. The driving device is connected with the valve plate 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 extending along its circumferential direction. The first sharp surface and the second sharp surface are in shear fit; A storage pipe, one end of the storage pipe is connected with the second material port of one of the valve body assemblies, and the other end of the storage pipe is connected with the first material port of the other valve body assembly. The discharge valve has a storage state and a feeding state. In the storage state, the driving device drives the corresponding valve plate to move to open the first material port at one end of the storage pipe and close the first material port at the other end of the storage pipe; in the feeding state, the driving device drives the corresponding valve plate to move to close the first material port at one end of the storage pipe and open the first material port at the other end of the storage pipe; The driving device includes a driver and a driving shaft. The driver is a cylinder, and the driving shaft is connected with the driver to be driven to rotate by the driver; it further includes a thrust bearing, a spring seat and a compression spring. The thrust bearing and the spring seat are respectively sleeved on the driving shaft and are arranged at intervals in the axial direction of the driving shaft; the compression spring is sleeved on the driving shaft and is located outside the valve body. The axial two ends of the compression spring respectively abut against the thrust bearing and the spring seat. The compression spring drives the driving shaft to drive the valve plate to fit with the valve seat to seal the corresponding first material port.

2. The discharge valve according to claim 1, characterized in that, The valve seat includes: a first seat ring, the first seat ring is arranged at one end of the valve seat close to the valve plate. The first seat ring is located radially outside the corresponding first material port and extends along the circumferential direction of the first material port. The first sharp surface is provided on the first seat ring; The valve plate includes: a second seat ring, the second seat ring on the valve plate is arranged opposite to the first seat ring, and the second sharp surface arranged opposite to the first sharp surface is provided on the second seat ring.

3. The discharge valve according to claim 1, characterized in that, The driving device includes: A torsion bar, one end of the torsion bar is connected with the driving shaft, and the other end of the torsion bar is rotatably connected with the valve plate. The driving shaft drives the torsion bar to drive the valve plate to move.

4. The discharge valve according to claim 3, wherein A rotating bearing is arranged at the end of the torsion bar far from the driving shaft. The valve plate is rotatably connected with the rotating bearing.

5. The discharge valve according to claim 1, wherein The valve plate is located below the valve seat, and the thrust bearing is located above the compression spring.

6. The discharge valve according to claim 3, characterized in that The driving device further includes a crank, one end of the crank is pivotally connected with the driving shaft, and the other end of the crank is hinged with the cylinder.

7. The discharge valve according to claim 3, characterized in that, Further comprising: A cooling sleeve, the cooling sleeve is sleeved on the driving shaft, and a first cooling passage for circulating coolant is arranged in the cooling sleeve.

8. The discharge valve according to claim 7, characterized in that, The drive shaft is a hollow member and is provided with a second cooling passage arranged in parallel with the first cooling passage. Coolant inlets and coolant outlets communicating with the second cooling passage are respectively provided at both axial ends of the drive shaft.

9. The discharge valve according to claim 2, characterized in that, The valve plate, the first seat ring and the second seat ring are all made of a new type of ceramic material. The new type of ceramic material belongs to a kind of new material and is an inorganic material with a fine crystal structure made from artificially synthesized high-purity inorganic compounds, and has the characteristics of high temperature resistance, high hardness and wear resistance.

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