High-temperature-resistant emptying valve

Abstract

The utility model relates to the technical field of baiting valves, in particular to a high-temperature-resistant baiting valve which comprises a valve body and a valve element, the valve element is located in an inner cavity of the valve body, a cylindrical valve seat is further arranged at a feeding port in the top face of the valve body, a glass lining layer is arranged on the surface of the valve seat, a conical boss is arranged on the top face of the valve element, and the valve element is arranged on the conical boss. The valve seat is right opposite to the inclined face of the conical boss of the valve element, a conical inclined face is arranged at an opening of the valve seat, the conical inclined face at the opening of the valve seat is right opposite to and parallel to the inclined face of the conical boss of the valve element, a circle of groove is formed in the middle of the conical inclined face at the opening of the valve seat, and an annular temperature-resistant sealing ring is arranged in the groove. The diameter of the bottom face of the conical boss on the top face of the valve element is larger than the outer diameter of the temperature-resistant sealing ring and smaller than the outer diameter of the valve seat. According to the emptying valve, the service life can be prolonged while the sealing performance and the high temperature resistance are guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of discharge valve technology, and in particular to a high-temperature resistant discharge valve. Background Technology

[0002] A discharge valve is a valve specifically designed to control fluid flow and is widely used in industries such as chemical, petroleum, metallurgy, pharmaceutical, pesticide, dye, and food processing. Specific applications require it to possess characteristics such as high temperature resistance, corrosion resistance, and high airtightness. The discharge valve consists of a valve body and a valve stem. A valve plate with an inlet is located at the upper opening of the valve body, and an outlet is located on the side of the valve body. The valve stem is located within the inner cavity of the valve body; longitudinal movement of the valve stem opens or closes the inlet on the valve plate. To improve sealing and corrosion resistance, the valve plate is made of polytetrafluoroethylene (PTFE), which effectively utilizes the elasticity and corrosion resistance of PTFE. However, PTFE is prone to deformation at high temperatures, has poor compressive strength, and a short service life.

[0003] In the prior art, the utility model patent with authorization announcement number CN220102111U provides a novel glass-lined manual top-mounted discharge valve, including a valve seat, a valve cover on the top of the valve seat, a valve body on the top of the valve cover, a first circular hole on the outer surface of the valve body, a first limiting tube inside the first circular hole, a sealing cap at the other end of the first limiting tube, a support seat on the top of the sealing cap, a spring at the bottom of the support seat, a sealing ring at the other end of the spring, and a packing layer at the bottom of the sealing ring, the packing layer being polytetrafluoroethylene sheet packing. This utility model, by placing a spring at the bottom of the support seat, a sealing ring at the other end of the spring, and a packing layer at the bottom of the sealing ring, can greatly improve the sealing performance of the discharge valve. The spring provides elasticity, preventing the valve plate from jamming and extending the service life of the valve plate and the sealing ring.

[0004] In the process of developing this utility model, the inventors discovered at least the following problems in the prior art: While the spring in the patented technology can protect the valve plate and sealing ring, the sealing pressure is limited by the spring force, restricting the sealing performance of the discharge valve; furthermore, the spring force decreases after fatigue, leading to insufficient sealing pressure and affecting sealing performance. The valve seat of the existing discharge valve is made of PTFE, a relatively soft material. Material crystallization can damage the valve seat during discharge, and excessively high temperatures can cause deformation, leading to material leakage and posing a safety hazard. Summary of the Invention

[0005] This invention addresses the shortcomings of existing technologies by developing a high-temperature resistant discharge valve, which can improve service life while ensuring sealing and high-temperature resistance.

[0006] The technical solution to the technical problem solved by this utility model is as follows: An embodiment of this utility model provides a high-temperature resistant discharge valve, including a valve body and a valve core. The valve core is located in the inner cavity of the valve body. A valve seat is also provided at the feed inlet on the top surface of the valve body. The valve seat is cylindrical and the surface of the valve seat is provided with an enamel layer. A conical boss is provided on the top surface of the valve core. The valve seat is directly opposite the inclined surface of the conical boss of the valve core. A conical inclined surface is provided at the opening of the valve seat. The conical inclined surface at the opening of the valve seat is directly opposite and parallel to the inclined surface of the conical boss of the valve core. A groove is provided in the middle of the conical inclined surface at the opening of the valve seat. An annular high-temperature resistant sealing ring is provided in the groove. The diameter of the valve core is smaller than the inner diameter of the valve seat. The bottom diameter of the conical boss on the top surface of the valve core is larger than the outer diameter of the high-temperature resistant sealing ring and smaller than the outer diameter of the valve seat.

[0007] As an optimization, the valve seat is fixed to the inlet of the valve seat by a loose flange, which is connected to the valve seat by two bolts, and the loose flange presses against the valve seat. The heat-resistant sealing ring is embedded in the groove of the conical inclined surface of the valve seat.

[0008] As an optimization, the material of the temperature-resistant sealing ring is polytetrafluoroethylene filled with carbon fiber.

[0009] As an optimization, the discharge valve also includes a moving mechanism. The valve body is a shell with an opening on the top, bottom, and side surfaces. The opening on the top surface is the feed inlet, the opening on the side is the discharge outlet, and the opening on the bottom is the operating port. The valve core passes through the feed inlet and the operating port of the valve body. A sealing sleeve is provided between the valve core and the operating port. The lower end of the valve core is connected to the moving mechanism. The moving mechanism drives the valve core to move longitudinally, which can open or close the feed inlet of the valve body. The moving mechanism is located outside the operating port on the bottom surface of the valve body. Operating the moving mechanism can drive the valve core to move longitudinally.

[0010] As an optimization, the moving mechanism includes a bracket, a lead screw, a handwheel, a round nut, a lead screw, and a guide key. The bracket is cylindrical, and its top surface is fixed to the operating port on the bottom surface of the valve body. The lead screw is cylindrical, with a boss on its top and an external thread corresponding to the round nut on its bottom. The lead screw passes through the opening on the bottom surface of the bracket and connects to the round nut. The handwheel is fixed to the lead screw. The lead screw has an external thread on its surface, and the center of the lead screw has a threaded hole corresponding to the lead screw. The upper end of the lead screw is fixedly connected to the lower end of the valve core, and the lower end of the lead screw is installed in the lead screw. A groove is vertically provided on the side of the lead screw. One end of the guide key is fixed to the bracket, and the other end is inserted into the groove on the side of the lead screw. The valve core and the lead screw are connected by threads. The top surface of the bracket is fixed to the bottom surface of the valve body by bolts. The sealing cover and the bracket are connected by screws. The sealing sleeve is annular, and the valve core passes through the central hole of the sealing sleeve, fitting snugly against the sealing sleeve. The lead screw and the lead screw nut are connected by threads. The guide key is fixed to the bracket by threads. The guide key can restrict the rotation of the lead screw, and turning the handwheel can drive the lead screw nut to rotate, thereby driving the lead screw and valve core to move longitudinally.

[0011] As an optimization, the high-temperature resistant discharge valve also includes a sealing gland, which is fixed to the bottom surface of the valve body, and the top surface of the sealing gland fits against the sealing sleeve. The cylindrical sealing gland presses and secures the sealing sleeve.

[0012] As an optimization, the cylindrical body of the valve seat is located in the valve body, and the outer side of the cylindrical body of the valve seat fits against the inner side of the valve body.

[0013] As an optimization, the conical boss on the top surface of the valve core is wider at the bottom and narrower at the top. This conical boss is located below the valve seat. A conical inclined surface is provided on the inner side of the lower opening of the valve seat, and this inclined surface is directly opposite and parallel to the inclined surface of the conical boss on the valve core. The discharge valve is a bottom-expanding discharge valve structure.

[0014] As an optimization, the conical protrusion on the top surface of the valve core is wider at the top and narrower at the bottom. The conical protrusion on the top surface of the valve core is located above the valve seat. A conical inclined surface is provided on the inner side of the upper opening of the valve seat. The inclined surface at the upper opening of the valve seat is directly opposite to and parallel to the inclined surface of the conical protrusion of the valve core. The discharge valve is an upward-expanding discharge valve structure.

[0015] As an optimization, the high-temperature discharge valve further includes a metal temperature sensor, a temperature transmitter, and a platinum resistance thermometer. The metal temperature sensor is mounted on the top of the valve core, and the temperature transmitter is mounted on the bottom of the lead screw. The platinum resistance thermometer is installed in the metal temperature sensor and connected to the temperature transmitter. An explosion-proof battery is installed in the temperature transmitter. The lead screw and the temperature transmitter are connected by threads.

[0016] As an optimization, the surface of the valve body is provided with a jacket, the jacket wraps around the valve body, and there is a cavity between the jacket and the valve body. An inlet and an outlet are respectively provided on both sides of the jacket.

[0017] The effects provided in the description of this utility model are merely those of the embodiments, and not all the effects of this utility model. The above technical solutions have the following advantages or beneficial effects:

[0018] 1. The valve seat is made of forged steel with an enameled glass layer on its surface. The valve body is made of cast steel with an enameled glass layer on its inner surface, and the valve core is made of cast steel with an enameled glass layer on its outer surface. Forged steel is pressure-resistant, while the enameled glass layer is high-temperature and corrosion-resistant. The valve body has a stable shape and structure, and is pressure- and corrosion-resistant. The enameled glass layer provides resistance to corrosion from chemical raw materials and high temperatures, reducing material leakage, extending product lifespan, saving costs, improving product safety, and reducing the occurrence of safety accidents. The smooth surface of the enameled glass layer prevents material from adhering to the valve wall, making the valve easy to clean. The addition of a high-temperature resistant sealing ring significantly improves corrosion resistance and sealing performance. The cylindrical valve seat is taller than the existing valve plate thickness, providing higher pressure resistance, preventing easy deformation, and extending the service life of the discharge valve. By installing a valve seat at the feed inlet on the top surface of the valve body, a conical boss on the top surface of the valve core, and a corresponding conical bevel at the opening of the valve seat, with a temperature-resistant sealing ring positioned in the center of the bevel at the valve seat opening, the contact surface between the valve core and the valve seat is a conical bevel. This not only improves the sealing performance but also distributes pressure over a larger area. The valve seat is less prone to deformation, increasing its pressure resistance and preventing damage to the valve core and seat. This discharge valve can extend its service life while ensuring sealing, corrosion resistance, and high-temperature resistance.

[0019] 2. By setting the cylindrical body of the valve seat to be located in the valve body, and the outer side of the cylindrical body of the valve seat to fit against the inner side of the valve body, when the valve core squeezes the valve seat, the pressure can be transmitted to the valve body, which improves the strength of the valve seat, avoids valve seat deformation, and improves the service life of the valve seat.

[0020] 3. Existing discharge valves cannot independently measure and display temperature. The metal temperature sensor is made of tantalum, Hastelloy, or titanium, materials known for their high temperature resistance, corrosion resistance, excellent thermal conductivity, fast temperature transmission, and high accuracy. An explosion-proof battery powers the temperature transmitter, eliminating the need for an external power source, making it convenient and aesthetically pleasing. It is suitable for temperature measurement in workplaces where electricity is inconvenient or unavailable. The metal temperature sensor directly contacts the material, ensuring high temperature accuracy, fast transmission speed, and convenient, accurate, and efficient temperature readings.

[0021] 4. The jacket is welded to the outside of the valve body. When the material temperature is too high, cooling water is circulated into the gap between the jacket and the valve body to achieve a cooling effect, thus solving the problem of the discharge valve's inability to withstand high temperatures. When material discharge is affected by low-temperature crystallization, heat transfer oil or warm water is circulated into the gap between the jacket and the valve body to prevent crystallization. The jacket plays a role in regulating the discharge temperature, thereby improving the service life of the discharge valve. Attached Figure Description

[0022] Figure 1 This is a front view of the first embodiment of the present utility model.

[0023] Figure 2 This is a perspective view of the first embodiment of the present utility model.

[0024] Figure 3 for Figure 1 A sectional view along the CC direction.

[0025] Figure 4 for Figure 3 A magnified view of a portion of region G in the middle.

[0026] Figure 5 This is a front view of the second embodiment of the present utility model.

[0027] Figure 6 This is a perspective view of the second embodiment of the present utility model.

[0028] Figure 7 for Figure 5 A sectional view along the JJ direction.

[0029] Figure 8 for Figure 7 A magnified view of the K region.

[0030] The components include: metal temperature sensor 1, valve core 1 21, valve core 2 22, high-temperature resistant sealing ring 3, valve seat 4, valve body 5, sealing sleeve 6, bolt 1 7, sealing gland 8, bracket 9, threaded nut 10, handwheel 11, round nut 12, lead screw 13, temperature transmitter 14, platinum resistance thermometer 15, bolt 2 16, loose flange 17, and guide key 18. Detailed Implementation

[0031] To clearly illustrate the technical features of this solution, the invention will be described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

[0032] Example 1, Figures 1 to 4 This is the first embodiment of the present utility model, such as Figure 3As shown, a high-temperature resistant discharge valve includes a valve body 5 and a valve core 21. The valve core 21 is located in the inner cavity of the valve body 5. A valve seat 4 is also provided at the feed inlet on the top surface of the valve body 5. The valve seat 4 is cylindrical and has an enamel layer on its surface. A conical boss is provided on the top surface of the valve core 21. The valve seat 4 is directly opposite the inclined surface of the conical boss of the valve core 21. A conical inclined surface is provided at the opening of the valve seat 4. The conical inclined surface at the opening of the valve seat 4 is directly opposite to and parallel to the inclined surface of the conical boss of the valve core 21. A groove is provided in the middle of the conical inclined surface at the opening of the valve seat 4. An annular high-temperature resistant sealing ring 3 is provided in the groove. The diameter of the valve core 21 is smaller than the inner diameter of the valve seat 4. The bottom diameter of the conical boss on the top surface of the valve core 21 is larger than the outer diameter of the high-temperature resistant sealing ring 3 and smaller than the outer diameter of the valve seat 4. Valve seat 4 is fixed to the feed inlet of valve seat 4 via loose flange 17. Loose flange 17 is connected to valve seat 4 via bolt 16, and loose flange 17 presses against valve seat 4. A high-temperature resistant sealing ring 3 is embedded in the groove of the conical inclined surface of valve seat 4. Valve seat 4 is made of forged steel, and its surface is lined with glass. Valve body 5 is made of cast steel, and its inner surface is lined with glass. Valve core 21 is made of cast steel, and its outer surface is lined with glass. Forged steel is pressure resistant, and the glass lining is high-temperature resistant and corrosion resistant. Valve body 5 has a stable shape and structure, and is pressure resistant and corrosion resistant.

[0033] The addition of an enamel layer to the surface provides resistance to corrosion from chemical raw materials and high temperatures, reducing material leakage, extending product lifespan, saving costs, enhancing product safety, and reducing the occurrence of safety accidents. The smooth surface of the enamel layer prevents material from adhering to the valve, making it easy to clean. The addition of a high-temperature resistant sealing ring 3 significantly improves corrosion resistance and sealing performance. The cylindrical valve seat 4 is taller than the existing valve plate, providing higher pressure resistance, preventing easy deformation, and extending the service life of the discharge valve. By setting the valve seat 4 at the feed inlet on the top surface of the valve body 5, and a conical boss on the top surface of the valve core 21, along with a corresponding conical slope at the opening of the valve seat 4, and a high-temperature resistant sealing ring 3 in the middle of the slope at the opening of the valve seat 4, the contact surface between the valve core 21 and the valve seat 4 is a conical slope. This not only improves sealing performance but also distributes pressure over a larger area, preventing deformation of the valve seat 4, increasing its pressure resistance, and avoiding damage to the valve core 21 and the valve seat 4. This discharge valve can extend its service life while ensuring sealing, corrosion resistance, and high temperature resistance.

[0034] The high-temperature resistant sealing ring 3 is made of polytetrafluoroethylene filled with carbon fiber. The existing discharge valve's sealing ring is made of PTFE, which does not have a high-temperature resistant sealing ring. It will soften and deform due to high temperature, resulting in poor sealing performance, easy leakage accidents, and extreme safety.

[0035] The discharge valve also includes a moving mechanism. The valve body 5 is a shell with an opening on the top, bottom, and side surfaces. The opening on the top surface of the valve body 5 is the feed inlet, the opening on the side surface is the discharge outlet, and the opening on the bottom surface is the operating port. The valve core 21 passes through the feed inlet and the operating port of the valve body 5. A sealing sleeve 6 is provided between the valve core 21 and the operating port. The lower end of the valve core 21 is connected to the moving mechanism. The moving mechanism drives the valve core 21 to move longitudinally, which can open or close the feed inlet of the valve body 5. The moving mechanism is located outside the operating port on the bottom surface of the valve body 5. Operating the moving mechanism can drive the valve core 21 to move longitudinally.

[0036] The moving mechanism includes a bracket 9, a nut 10, a handwheel 11, a round nut 12, a lead screw 13, and a guide key 18. The bracket 9 is cylindrical, and its top surface is fixed to the operating port on the bottom surface of the valve body 5. The nut 10 is cylindrical, with a boss on its top and an external thread corresponding to the round nut 12 on its bottom. The nut 10 passes through the opening on the bottom surface of the bracket 9 and connects to the round nut 12. The handwheel 11 is fixed to the nut 10. The lead screw 13 has an external thread on its surface, and the nut 10 has a threaded hole corresponding to the lead screw 13 in its center. The upper end of the lead screw 13 is fixedly connected to the lower end of the valve core 21, and the lower end of the lead screw 13 is installed in the nut 10. A groove is vertically provided on the side of the lead screw 13, and one end of the guide key 18 is fixed to the bracket 9, while the other end is inserted into the groove on the side of the lead screw 13. The valve core 21 and the lead screw 13 are connected by threads. The top surface of the bracket 9 is fixed to the bottom surface of the valve body 5 by bolts 7. The sealing gland 8 and the bracket 9 are connected by screws. The sealing sleeve 6 is annular, and the valve core 21 passes through the central hole of the sealing sleeve 6, fitting snugly against the sealing sleeve 6. The lead screw 13 and the lead nut 10 are connected by threads. The guide key 18 is fixed to the bracket 9 by threads. The guide key 18 can restrict the rotation of the lead screw 13. Turning the handwheel 11 can drive the lead nut 10 to rotate, thereby driving the lead screw 13 and the valve core 21 to move longitudinally.

[0037] The high-temperature resistant discharge valve also includes a sealing cap 8, which is fixed to the bottom surface of the valve body 5, and the top surface of the sealing cap 8 is fitted with the sealing sleeve 6. The cylindrical sealing cap 8 presses and fixes the sealing sleeve 6.

[0038] The cylindrical body of the valve seat 4 is located within the valve body 5, and the outer surface of the cylindrical body of the valve seat 4 is in contact with the inner surface of the valve body 5. By setting the cylindrical body of the valve seat 4 to be located within the valve body 5, and the outer surface of the cylindrical body of the valve seat 4 to be in contact with the inner surface of the valve body 5, when the valve core 21 presses against the valve seat 4, the pressure can be transmitted to the valve body 5, which improves the strength of the valve seat 4, prevents deformation of the valve seat 4, and extends the service life of the valve seat 4.

[0039] The conical boss on the top surface of the valve core 21 is wider at the bottom and narrower at the top. This conical boss is located below the valve seat 4. A conical inclined surface is provided on the inner side of the lower opening of the valve seat 4. The inclined surface at the lower opening of the valve seat 4 is directly opposite to and parallel to the inclined surface of the conical boss of the valve core 21. The discharge valve is a downward-expanding discharge valve structure.

[0040] The high-temperature resistant discharge valve also includes a metal temperature sensor 1, a temperature transmitter 14, and a platinum resistance thermometer 15. The metal temperature sensor 1 is installed at the top of the valve core, and the temperature transmitter 14 is installed at the bottom of the lead screw 13. The platinum resistance thermometer 15 is installed in the metal temperature sensor 1 and is connected to the temperature transmitter 14. An explosion-proof battery is installed in the temperature transmitter 14. The lead screw 13 and the temperature transmitter 14 are connected by a thread. Existing discharge valves cannot independently measure and display temperature. The metal temperature sensor 1 is made of any one of tantalum, Hastelloy, or titanium. These materials are high-temperature resistant, corrosion resistant, have good thermal conductivity, fast temperature transmission speed, and high accuracy. The explosion-proof battery powers the temperature transmitter 14, eliminating the need for an external power source to display the temperature, making it convenient and aesthetically pleasing. It is suitable for temperature measurement in workplaces where electricity is inconvenient or unavailable. The metal temperature sensor 1 directly contacts the material, resulting in high temperature measurement accuracy, fast transmission speed, and convenient, quick, accurate, and efficient temperature reading.

[0041] Example 2, Figures 5 to 8 This is the second embodiment of the present invention, differing from the first embodiment in that: the discharge valve is an upward-expanding discharge valve structure, with the cylindrical body of the valve seat 4 located outside the valve body 5. The conical protrusion on the top surface of the valve core 22 is wider at the top and narrower at the bottom, and is located above the valve seat 4. A conical inclined surface is provided on the inner side of the opening at the upper end of the valve seat 4, and this inclined surface is directly opposite and parallel to the inclined surface of the conical protrusion of the valve core 22. A jacket is provided on the surface of the valve body 5, enclosing the valve body 5. A cavity exists between the jacket and the valve body 5, with an inlet and an outlet on each side of the jacket. The jacket is welded to the outside of the valve body. When the material temperature is too high, cooling water is circulated into the gap between the jacket and the valve body 5 to achieve a cooling effect, thus solving the problem of the discharge valve's inability to withstand high temperatures. When material discharge is affected by low-temperature crystallization, heat-conducting oil or warm water is circulated into the gap between the jacket and the valve body 5 to prevent crystallization. The jacket regulates the discharge temperature, thus extending the lifespan of the discharge valve.

[0042] The valve core 21 in Example 1 and the valve core 22 in Example 2 are alternative solutions to the same technical problem, and they have the same technical functions and effects.

[0043] Although the specific embodiments of the utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the utility model. Based on the technical solution of the utility model, various modifications or variations that can be made by those skilled in the art without creative effort are still within the scope of protection of the utility model.

Claims

1. A high-temperature resistant discharge valve, comprising a valve body (5) and a valve core, wherein the valve core is located in the inner cavity of the valve body (5), characterized in that: A valve seat (4) is also provided at the feed inlet on the top surface of the valve body (5). The valve seat (4) is cylindrical and has an enamel layer on its surface. A conical boss is provided on the top surface of the valve core. The valve seat (4) is directly opposite the inclined surface of the conical boss of the valve core. A conical inclined surface is provided at the opening of the valve seat (4). The conical inclined surface at the opening of the valve seat (4) is directly opposite and parallel to the inclined surface of the conical boss of the valve core. A groove is provided in the middle of the conical inclined surface at the opening of the valve seat (4). An annular heat-resistant sealing ring (3) is provided in the groove. The diameter of the valve core is smaller than the inner diameter of the valve seat (4). The bottom diameter of the conical boss on the top surface of the valve core is larger than the outer diameter of the heat-resistant sealing ring (3) and smaller than the outer diameter of the valve seat (4).

2. The high-temperature resistant discharge valve according to claim 1, characterized in that, The heat-resistant sealing ring (3) is made of polytetrafluoroethylene-filled carbon fiber.

3. The high-temperature resistant discharge valve according to claim 1, characterized in that, The discharge valve also includes a moving mechanism. The valve body (5) is a shell with an opening on the top, bottom and side surfaces respectively. The opening on the top surface of the valve body (5) is the feed port, the opening on the side surface is the discharge port and the opening on the bottom surface is the operation port. The valve core passes through the feed port and operation port of the valve body (5). A sealing sleeve (6) is provided between the valve core and the operation port. The lower end of the valve core is connected to the moving mechanism. The moving mechanism drives the valve core to move longitudinally to open or close the feed port of the valve body (5).

4. A high-temperature resistant discharge valve according to claim 3, characterized in that, The moving mechanism includes a bracket (9), a screw nut (10), a handwheel (11), a round nut (12), a lead screw (13), and a guide key (18). The bracket (9) is cylindrical, and its top surface is fixed to the operating port on the bottom surface of the valve body (5). The screw nut (10) is cylindrical, with a boss on its top and an external thread corresponding to the round nut (12) on its bottom. The screw nut (10) passes through the opening on the bottom surface of the bracket (9) and connects to... A round nut (12) and a handwheel (11) are fixed on a screw nut (10). The screw (13) has an external thread on its surface. The screw nut (10) has a threaded hole corresponding to the screw (13) in its center. The upper end of the screw (13) is fixedly connected to the lower end of the valve core. The lower end of the screw (13) is installed in the screw nut (10). A groove is vertically provided on the side of the screw (13). One end of the guide key (18) is fixed on the bracket (9), and the other end is inserted into the groove on the side of the screw (13).

5. A high-temperature resistant discharge valve according to claim 3, characterized in that, The high-temperature resistant discharge valve also includes a sealing cover (8), which is fixed on the bottom surface of the valve body (5) and the top surface of the sealing cover (8) is in contact with the sealing sleeve (6).

6. A high-temperature resistant discharge valve according to claim 1, characterized in that, The cylindrical body of the valve seat (4) is located in the valve body (5), and the outer side of the cylindrical body of the valve seat (4) is in contact with the inner side of the valve body (5).

7. A high-temperature resistant discharge valve according to claim 1, characterized in that, The conical protrusion on the top surface of the valve core is wider at the bottom and narrower at the top. The conical protrusion on the top surface of the valve core is located below the valve seat (4). A conical inclined surface is provided on the inner side of the lower opening of the valve seat (4). The inclined surface at the lower opening of the valve seat (4) is directly opposite to and parallel to the inclined surface of the conical protrusion of the valve core.

8. A high-temperature resistant discharge valve according to claim 1, characterized in that, The conical protrusion on the top surface of the valve core is thicker at the top and narrower at the bottom. The conical protrusion on the top surface of the valve core is located above the valve seat (4). A conical inclined surface is provided on the inner side of the upper opening of the valve seat (4). The inclined surface at the upper opening of the valve seat (4) is directly opposite to and parallel to the inclined surface of the conical protrusion of the valve core.

9. A high-temperature resistant discharge valve according to claim 1, characterized in that, The high-temperature discharge valve also includes a metal temperature measuring head (1), a temperature transmitter (14), and a platinum resistance thermometer (15). The metal temperature measuring head (1) is installed at the top of the valve core, and the temperature transmitter (14) is installed at the bottom of the lead screw (13). The metal temperature measuring head (1) contains a platinum resistance thermometer (15), which is connected to the temperature transmitter (14). The temperature transmitter (14) contains an explosion-proof battery.

10. A high-temperature resistant discharge valve according to claim 1, characterized in that, The surface of the valve body (5) is provided with a jacket, which wraps around the valve body (5). There is a cavity between the jacket and the valve body (5). An inlet and an outlet are respectively provided on both sides of the jacket.

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