An intelligent temperature-controlled pre-sintering equipment for the preparation of tungsten-copper alloy

Abstract

The present invention belongs to the technical field of tungsten-copper alloy preparation, and discloses an intelligent temperature-controlled pre-sintering device for preparing tungsten-copper alloy. The intelligent temperature-controlled pre-sintering device for preparing tungsten-copper alloy comprises a furnace body, the interior of which is fixedly connected to an inner shell by a support rod, the inner wall of the inner shell is provided with a heat-insulating shell, a cover is clamped at the opening at the top of the furnace body, and a lifting block is provided on the lower surface of the cover. The intelligent temperature-controlled pre-sintering device for preparing tungsten-copper alloy, by utilizing the design of a circulation mechanism and a heating mechanism, can realize the circulation of inert airflow in the furnace body, concentrate heat at the position of the lifting mechanism, and realize targeted heating of the embryo body. Similarly, by utilizing this design, the embryo body can also be flexibly and specifically temperature-controlled when cooling is required. The direction of the airflow in the furnace body can be changed by adjusting the angle of the control plate, and the heat can be dispersed, so that the temperature can be flexibly and quickly adjusted, solving the problems raised in the background technology.

Description

Technical Field

[0001] The invention relates to the technical field of tungsten-copper alloy preparation, and in particular to an intelligent temperature-controlled pre-sintering device for preparing tungsten-copper alloy. Background Art

[0002] Tungsten copper alloy is an alloy composed of tungsten and copper, and the copper content of the commonly used alloy is 10% to 50%. The alloy is made by powder metallurgy and has good electrical and thermal conductivity, good high temperature strength and certain plasticity.

[0003] In the preparation process of tungsten steel alloy, it is necessary to pre-sinter the green blocks made of mixed powders of tungsten powder and copper powder. The equipment used is usually a sintering furnace. With the development of technology, the temperature control of the sintering furnace can be realized by computer intelligent control, overcoming the limitation of traditional control methods on the preparation process of tungsten copper alloy. However, the equipment on the market today is usually obtained by upgrading traditional equipment with temperature control equipment. The temperature control in the furnace takes a long time, which is not fast and flexible enough, limiting the development of the process. Therefore, we propose an intelligent temperature control pre-sintering equipment for the preparation of tungsten copper alloy. Summary of the invention

[0004] The purpose of the present invention is to provide an intelligent temperature-controlled pre-sintering device for the preparation of tungsten-copper alloy. After detecting temperature feedback, the intelligent temperature-controlled pre-sintering device for the preparation of tungsten-copper alloy can quickly and flexibly reduce or increase the temperature of the alloy blank, thereby enhancing the uniformity of heating of the alloy blank in the furnace.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: an intelligent temperature-controlled pre-sintering device for preparing tungsten-copper alloy, comprising a furnace body, the interior of the furnace body is fixedly connected to an inner shell through a support rod, the inner wall of the inner shell is provided with a heat-insulating shell, a cover is clamped at the opening at the top of the furnace body, a lifting block is provided on the lower surface of the cover, and the lifting block is inserted into the top wall openings of the inner shell and the heat-insulating shell, a lifting mechanism is provided on the lower surface of the lifting block and on the inner side of the inner shell, a circulation mechanism is provided on the lifting block, and a heating mechanism is provided in the inner shell;

[0006] The hanging mechanism includes a hanging plate, a mounting hole, a placement plate and a temperature probe. The top ends of several hanging plates are fixedly connected to the lower surface of the hanging plate and are arranged in a ring with the axis of the hanging block as a reference. Several mounting holes are opened on the hanging plate at equal distances from top to bottom. The bottom wall of the mounting hole is fixedly connected with a placement plate, and a temperature probe is arranged on the inner side of the hanging plate; the temperature probe is an external temperature measuring device, which can detect the temperature at the core of the furnace in real time, and feed back to the controller to realize the regulation of the circulation mechanism and the heating mechanism to control the temperature.

[0007] The circulation mechanism includes a circulation chamber, a driving motor, a rotating shaft, a circulation fan blade, a circulation air hole, a reflux hole, a reflux pipe, a connecting hole 1, a check valve 1, a connecting hole 2 and a check valve 2. The circulation chamber is opened in the middle of the lifting block, the driving motor is fixedly installed in the middle of the upper surface of the cover, the output end of the driving motor is fixedly connected to the rotating shaft, the bottom end of the rotating shaft extends into the circulation chamber and is fixedly connected to the circulation fan blade, the circulation fan blade adopts a ceramic fan blade to achieve stable operation in a high temperature environment, and draws air from the reflux hole. The air flow is sprayed toward the circulation air hole, which is opened in the middle of the bottom wall of the circulation cavity and connected with the inner shell. The left and right sides of the lifting block are provided with reflux holes connected with the circulation cavity. The two reflux holes are fixedly connected with reflux pipes. The end of the reflux pipe away from the reflux hole is plugged into the plug-in hole at the top of the inner shell and the insulation shell. The upper left and upper right of the circulation cavity are respectively provided with a communication hole 1 and a communication hole 2. The openings of the communication hole 1 and the communication hole 2 away from the circulation cavity are both at the top of the cover and are respectively provided with a one-way valve 1 and a one-way valve 2;

[0008] The heating mechanism includes a top ring, a chassis, a central shaft, a worm gear, a regulating motor, a worm, a regulating plate, a connecting rod, a sliding block, a sliding groove, a regulating gear, an annular tooth groove, a rack, a linkage shaft, a contact sheet, a strip hole and a heating element. The top ring is fixedly connected to the inner top wall of the insulation shell, the chassis is arranged at a position corresponding to the top ring on the bottom wall of the insulation shell, the top end of the central shaft is fixedly connected to the middle part of the lower surface of the chassis, the bottom end of the central shaft passes through the insulation shell and the inner shell to between the furnace body and the inner shell, the worm gear is fixedly connected to the position where the central shaft is located outside the inner shell, the regulating motor is fixedly installed on the inner bottom wall of the furnace body, and the worm at the output end of the regulating motor is meshed with the worm gear, and a plurality of regulating plates are located between the top ring and the chassis. The gears are arranged in a ring-like shape with the axis of the top ring as a reference, a sliding groove is provided on the lower surface of the top ring, a sliding block is slidably connected in the sliding groove, the lower surface of the sliding block is connected to the top wall of the regulating plate through a connecting rod, an annular tooth groove is provided on the side wall of the sliding groove, a rack is provided on the outer side wall of the annular tooth groove, a regulating gear is fixedly connected to the position corresponding to the rack on the connecting rod and meshes with the rack, a linkage shaft is fixedly connected to the position corresponding to the connecting rod at the bottom of the regulating plate, the linkage shaft is movably connected to the upper surface of the chassis through a bearing, a contact piece is provided in the arc groove on the lower surface of the chassis, and the linkage shaft contacts the contact piece, a strip hole is provided in the middle of the regulating plate, a heating element is fixedly installed between the upper and lower walls of the strip hole.

[0009] Preferably, the heating element is a graphite heating rod, and the heating mechanism also includes circulation holes and baffles. Two groups of circulation holes are arranged on the upper and lower sides of the regulating plate, and the circulation holes are grouped together into two and are symmetrical with respect to the axis of the heating element. Two groups of baffles are arranged on the two side surfaces of the regulating plate, and the baffles are grouped together into two and are respectively fixedly connected to the sides of the strip holes. The baffles are arc-shaped plates and are spaced apart from the heating element in a range of 5-8 cm. The spacing between the heating element and the side wall of the strip hole is in a range of 5-8 cm, and the formed spacing allows airflow to pass through.

[0010] By utilizing the design of the baffle plate, during the heating process, the regulating plate is facing the lifting plate and can heat the alloy blank directly. When the temperature needs to be lowered, on the one hand, low-temperature inert gas can be added into the furnace body through the circulation mechanism; on the other hand, after the angle of the regulating plate is adjusted, the baffle plate is between the alloy blank and the heating element, which can reduce the heat radiation received by the alloy blank and reduce its heat. Moreover, after the regulating plate is adjusted, the hot air circulation in the furnace body is changed, and the heat is not concentrated on the placement plate.

[0011] Preferably, the number of the regulating plates is eight, and when adjacent regulating plates are in contact, the cross-sections of the eight regulating plates are octagonal.

[0012] After the control plates form an octagon, the circulation mechanism works to circulate the high-temperature inert gas in the furnace body, and the conical nozzle sprays a high-speed airflow. Based on Bernoulli's theorem, the hot air is concentrated at the high-speed airflow, so that the heat is concentrated at the position of the lifting mechanism to heat the alloy blanks, thereby improving the heat utilization efficiency. At the same time, this structural design also makes it possible for the low-temperature inert gas to enter the furnace body and extract the hot air flow for cooling when the alloy blanks need to be cooled, thereby achieving targeted cooling of the alloy blanks and realizing fast and flexible temperature control.

[0013] Preferably, a water tank is provided on the right side of the furnace body, and a circular pipe fitting is provided in the water tank. A water inlet hole and a water outlet hole are respectively provided at the upper and lower ends of the right side of the water tank. Both ends of the circular pipe fitting are located at the top of the water tank and are fixedly connected with the outlet end of the air inlet pipe and the air inlet end of the air outlet pipe respectively. The air inlet end of the air inlet pipe is connected with one-way valve one, and the air outlet end of the air outlet pipe is connected with one-way valve two. When cooling water is passed into the water tank, the inert gas can be cooled. When the temperature in the furnace body needs to be lowered, the inert gas can be recycled, and heat can be continuously absorbed and dissipated to reduce waste.

[0014] The connection between the one-way valve 1 and the air inlet pipe is its air outlet end, and the connection between the one-way valve 2 and the air outlet pipe is its air inlet end. After the cover is hoisted on the furnace body, the one-way valve 1 and the one-way valve 2 are connected to the air inlet pipe and the air outlet pipe respectively.

[0015] Preferably, an inert gas storage tank is provided on the top of the furnace body, and a gas outlet end of the inert gas storage tank is connected to a gas outlet pipe and is provided with a switch valve.

[0016] The inert gas storage tank can replenish inert gas into the furnace before processing, and can also be partially introduced as needed during the cooling process.

[0017] Preferably, the placement plate is bowl-shaped, and four annularly arranged pads are fixedly connected to the inner wall of the placement plate for material placement, and the bottoms of the four lifting plates are fixedly connected via a conical shell.

[0018] The hot air flow can enter the placement plate when following the high-speed air flow ejected from the conical nozzle. The bowl-shaped design allows the hot air flow to fully contact the embryo, thereby improving the heating uniformity of the embryo and improving the sintering efficiency.

[0019] Preferably, a conical nozzle is provided at the bottom opening of the circulating air hole, and the tip of the conical shell points to the conical nozzle.

[0020] Preferably, a lifting ring is provided on the edge of the upper surface of the cover for lifting the cover, and a battery core is inserted into the bottom wall of the inner shell and contacts with a contact sheet for power supply.

[0021] Corresponding connecting gaskets are also provided in the sliding groove for electrical connection of adjacent heating elements. The number of battery cells is the same as the number of heating elements. Two heating elements are a group to form a circuit for heating. The chassis uses ceramic material to achieve uniformity. The linkage shaft and connecting rod in the circuit are electrically connected to the heating element.

[0022] By adopting the above technical solution, the beneficial effects of the present invention are:

[0023] The intelligent temperature-controlled pre-sintering equipment for preparing tungsten-copper alloy utilizes the design of a circulation mechanism and a heating mechanism to realize the circulation of an inert gas flow in a furnace body, concentrates heat at the position of a hoisting mechanism, and realizes targeted heating of a blank. Similarly, by utilizing this design, the temperature of the blank can be flexibly controlled in a targeted manner when cooling is required. The angle of the control plate can be adjusted to change the direction of the gas flow in the furnace body, disperse the heat, and realize flexible and rapid temperature control, thereby solving the problems raised in the background technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a front cross-sectional view of the present invention;

[0025] Figure 2 For the present invention Figure 1 The enlarged view of point A in the middle;

[0026] Figure 3 For the present invention Figure 1 The enlarged view of point B in the middle;

[0027] Figure 4 For the present invention Figure 1 Enlarged view of point C in the middle;

[0028] Figure 5 For the present invention Figure 1 The enlarged view of point D in the middle;

[0029] Figure 6 It is a structural schematic diagram of the control board of the present invention.

[0030] In the figure: 1 furnace body, 2 support rod, 3 inner shell, 4 insulation shell, 5 cover, 6 lifting block, 7 lifting mechanism, 71 lifting plate, 72 mounting hole, 73 placement plate, 74 temperature probe,

[0031] 8 circulation mechanism, 81 circulation chamber, 82 driving motor, 83 rotating shaft, 84 circulation fan blade, 85 circulation air hole, 86 reflux hole, 87 reflux pipe, 88 connecting hole 1, 89 one-way valve 1, 810 connecting hole 2, 811 one-way valve 2,

[0032] 9 heating mechanism, 91 top ring, 92 chassis, 93 center shaft, 94 worm gear, 95 regulating motor, 96 worm, 97 regulating plate, 98 connecting rod, 99 sliding block, 910 sliding groove, 911 regulating gear, 912 annular tooth groove, 913 rack, 914 linkage shaft, 915 contact sheet, 916 bar hole, 917 heating element, 918 circulation hole, 919 shielding plate,

[0033] 10 plug-in hole, 11 water tank, 12 round pipe fitting, 13 air inlet pipe, 14 air outlet pipe, 15 inert gas storage tank, 16 switch valve, 17 cushion block, 18 conical shell, 19 conical nozzle, 20 lifting ring, 21 battery cell. DETAILED DESCRIPTION

[0034] See also Figure 1-6 The present invention provides a technical solution: an intelligent temperature-controlled pre-sintering device for preparing tungsten-copper alloy, comprising a furnace body 1, an inner shell 3 is fixedly connected to the inside of the furnace body 1 through a support rod 2, an inner wall of the inner shell 3 is provided with a heat-insulating shell 4, a cover 5 is clamped at the opening on the top of the furnace body 1, a lifting block 6 is provided on the lower surface of the cover 5, and the lifting block 6 is inserted into the top wall openings of the inner shell 3 and the heat-insulating shell 4, a lifting mechanism 7 is provided on the lower surface of the lifting block 6 and on the inner side of the inner shell 3, a circulation mechanism 8 is provided on the lifting block 6, and a heating mechanism 9 is provided in the inner shell 3;

[0035] In actual operation, a vacuum device should be installed on the furnace body 1 to evacuate the air in the inner shell 3 and then introduce inert gas. This is a prior art and will not be described in detail in this embodiment.

[0036] The hanging mechanism 7 includes a hanging plate 71, a mounting hole 72, a placement plate 73 and a temperature probe 74. The top ends of several hanging plates 71 are fixedly connected to the lower surface of the hanging plate 71 and are arranged in a ring with the axis of the hanging block 6 as a reference. Several mounting holes 72 are opened on the hanging plate 71 at equal distances from top to bottom. The bottom wall of the mounting hole 72 is fixedly connected to the placement plate 73, and a temperature probe 74 is arranged on the inner side of the hanging plate 71; the temperature probe 74 is an external temperature measuring device, which can detect the temperature at the core of the furnace in real time, and feed back to the controller to realize the regulation of the circulation mechanism 8 and the heating mechanism 9 to control the temperature.

[0037] The circulation mechanism 8 includes a circulation chamber 81, a driving motor 82, a rotating shaft 83, a circulation blade 84, a circulation air hole 85, a reflux hole 86, a reflux pipe 87, a connecting hole 88, a one-way valve 89, a connecting hole 810 and a one-way valve 811. The circulation chamber 81 is opened in the middle of the lifting block 6, and the driving motor 82 is fixedly installed in the middle of the upper surface of the cover 5. The output end of the driving motor 82 is fixedly connected to the rotating shaft 83, and the bottom end of the rotating shaft 83 extends into the circulation chamber 81 and is fixedly connected to the circulation blade 84. The circulation blade 84 adopts a ceramic blade to achieve stable operation in a high temperature environment. It extracts air from the reflux hole 86. Flow, sprayed to the circulation air hole 85, the circulation air hole 85 is opened in the middle of the bottom wall of the circulation chamber 81 and is connected to the inner shell 3, the left and right sides of the lifting block 6 are provided with a return hole 86 connected to the circulation chamber 81, the two return holes 86 are fixedly connected with a return pipe 87, the end of the return pipe 87 away from the return hole 86 is plugged into the plug hole 10 at the top of the inner shell 3 and the insulation shell 4, the upper left and upper right of the circulation chamber 81 are respectively provided with a connecting hole 1 88 and a connecting hole 2 810, the openings of the connecting hole 1 88 and the connecting hole 2 810 away from the circulation chamber 81 are both at the top of the cover 5 and are respectively provided with a one-way valve 1 89 and a one-way valve 2 811;

[0038] The heating mechanism 9 includes a top ring 91, a bottom plate 92, a central shaft 93, a worm gear 94, a regulating motor 95, a worm 96, a regulating plate 97, a connecting rod 98, a sliding block 99, a sliding groove 910, a regulating gear 911, an annular tooth groove 912, a rack 913, a linkage shaft 914, a contact piece 915, a strip hole 916 and a heating element 917. The top ring 91 is fixedly connected to the inner top wall of the insulation shell 4, and the bottom plate 92 is arranged on the bottom wall of the insulation shell 4. The top end of the central shaft 93 is fixedly connected to the middle of the lower surface of the bottom plate 92 according to the position of the top ring 91, the bottom end of the central shaft 93 passes through the insulation shell 4 and the inner shell 3 to the furnace body 1 and the inner shell 3, the worm gear 94 is fixedly connected to the position of the central shaft 93 outside the inner shell 3, the regulating motor 95 is fixedly installed on the inner bottom wall of the furnace body 1, and the worm 96 at the output end of the regulating motor 95 is meshed with the worm gear 94, and a plurality of regulating plates 97 are located between the top ring 91 and the bottom plate 92. 2 and are arranged in a ring shape with reference to the axis of the top ring 91. A sliding groove 910 is provided on the lower surface of the top ring 91. A sliding block 99 is slidably connected in the sliding groove 910. The lower surface of the sliding block 99 is connected to the top wall of the regulating plate 97 through a connecting rod 98. An annular tooth groove 912 is provided on the side wall of the sliding groove 910. A rack 913 is provided on the outer side wall of the annular tooth groove 912. A regulating gear 911 is fixedly connected to the position corresponding to the rack 913 on the connecting rod 98 and meshes with the rack 913. A linkage shaft 914 is fixedly connected to the position corresponding to the connecting rod 98 at the bottom of the regulating plate 97. The linkage shaft 914 is movably connected to the upper surface of the chassis 92 through a bearing. A contact piece 915 is provided in the arc groove on the lower surface of the chassis 92, and the linkage shaft 914 contacts the contact piece 915. A strip hole 916 is provided in the middle of the regulating plate 97, and a heating element 917 is fixedly installed between the upper and lower walls of the strip hole 916.

[0039] The heating element 917 is a graphite heating rod. The heating mechanism 9 also includes a circulation hole 918 and a baffle plate 919. Two groups of circulation holes 918 are arranged on the upper and lower sides of the regulating plate 97. The circulation holes 918 are grouped together in two and are symmetrical with the axis of the heating element 917 as a reference. Two groups of baffle plates 919 are arranged on the two side surfaces of the regulating plate 97. The baffle plates 919 are grouped together in two and are fixedly connected to the sides of the strip hole 916 respectively. The baffle plate 919 is an arc-shaped plate and the spacing range between it and the heating element 917 is 5-8cm. The spacing range between the heating element 917 and the side wall of the strip hole 916 is 5-8cm.

[0040] By utilizing the design of the baffle plate 919, during the heating process, the regulating plate 97 is facing the lifting plate 71 and can heat the alloy blank directly. When the temperature needs to be lowered, on the one hand, low-temperature inert gas can be added into the furnace body 1 through the circulation mechanism 8. On the other hand, after the angle of the regulating plate 97 is adjusted, the baffle plate 919 is located between the alloy blank and the heating element 917, which can reduce the heat radiation received by the alloy blank and reduce its heat. After the regulating plate 97 is adjusted, the hot air circulation in the furnace body is changed, and the heat is not concentrated on the placement plate 73.

[0041] There are eight regulating plates 97 , and when adjacent regulating plates 97 are in contact, the cross-sections of the eight regulating plates 97 are octagonal.

[0042] After the control plates 97 form an octagon, the circulation mechanism 8 works, so that the high-temperature inert gas in the furnace body forms a circulation, and the conical nozzle 19 sprays a high-speed airflow. Based on Bernoulli's theorem, the hot air is concentrated at the high-speed airflow, so that the heat is concentrated at the position of the lifting mechanism 7 to heat the alloy blank, thereby improving the heat utilization efficiency. At the same time, this structural design also makes it necessary to cool the alloy blank. After the low-temperature inert gas enters the furnace body 1, the hot air flow is extracted for cooling, which can achieve targeted cooling of the alloy blank and realize fast and flexible temperature control.

[0043] A water tank 11 is provided on the right side of the furnace body 1, and a circular pipe fitting 12 is provided in the water tank 11. The upper and lower ends of the right side of the water tank 11 are respectively provided with a water inlet hole and a water outlet hole. Both ends of the circular pipe fitting 12 are located at the top of the water tank 11 and are fixedly connected with the outlet end of the air inlet pipe 13 and the air inlet end of the air outlet pipe 14 respectively. The air inlet end of the air inlet pipe 13 is connected to a one-way valve 89, and the air outlet end of the air outlet pipe 14 is connected to a one-way valve 811.

[0044] The connection point between the one-way valve 89 and the air inlet pipe 13 is its air outlet end, and the connection point between the one-way valve 811 and the air outlet pipe 14 is its air inlet end. After the sealing cover 5 is hoisted on the furnace body 1, the one-way valve 89 and the one-way valve 811 are connected to the air inlet pipe 13 and the air outlet pipe 14 respectively.

[0045] An inert gas storage tank 15 is provided on the top of the furnace body 1 , and a gas outlet end of the inert gas storage tank 15 is connected to a gas outlet pipe 14 and is provided with a switch valve 16 .

[0046] The inert gas storage tank 15 can replenish the inert gas into the furnace body 1 before processing, and can also partially introduce inert gas as needed during the cooling process.

[0047] The placement plate 73 is bowl-shaped, and four annularly arranged pads 17 are fixedly connected to the inner wall of the placement plate 73 for material placement. The bottoms of the four hanging plates 71 are fixedly connected via a conical shell 18 .

[0048] The hot air flow can enter the placement plate 73 when following the high-speed air flow ejected from the conical nozzle 19. The bowl-shaped design allows the hot air flow to fully contact the embryo, thereby improving the heating uniformity of the embryo and improving the sintering efficiency.

[0049] A conical nozzle 19 is provided at the bottom opening of the circulating air hole 85 , and the tip of the conical shell 18 points to the conical nozzle 19 .

[0050] The edge of the upper surface of the cover 5 is provided with a lifting ring 20 for lifting the cover 5, and the bottom wall of the inner shell 3 is plugged with a battery core 21 and contacts the contact piece 915 for power supply.

[0051] Corresponding connecting gaskets are also provided in the sliding groove 910 for electrical connection of adjacent heating elements 917. The number of battery cells 21 is the same as the number of heating elements 917. Two heating elements 917 are a group that can form a circuit for heating. The chassis 92 uses ceramic material to achieve uniformity. The linkage shaft 914 and the connecting rod 98 in the circuit are electrically connected to the heating element 917.

[0052] When the intelligent temperature-controlled pre-sintering equipment for preparing tungsten-copper alloy is working, the alloy embryo is placed on the cushion block 17, the cover 5 is hoisted into the furnace body 1, the reflux pipe 87 is inserted into the plug hole 10, the air inlet pipe 13 and the air outlet pipe 14 are respectively connected to the one-way valve 1 89 and the one-way valve 2 811, the inner shell 3 is evacuated, and the inert gas is injected into the inner shell 3 through the inert gas storage tank and then closed, and the heating element 917 is powered on to heat it up. When the circulation mechanism 8 is working, the high-speed gas flows downward at the center of the inner shell 3, driving the hot air flow to continuously impact the alloy embryo. The temperature measuring probe 74 is actually The temperature inside the inner shell 3 is monitored. When cooling is required, the priority heating mechanism 9 is activated first, and the regulating motor 95 drives the chassis 92 to rotate so that the angle of the regulating plate 97 changes. The heating element 917 is not directly facing the alloy embryo. The shielding plate 919 blocks and reduces heat radiation. The airflow in the furnace changes, and the heat is no longer concentrated only on the embryo. During this process, the temperature measuring probe 74 measures the temperature and stops when the required temperature is reached. If cooling is required, the one-way valve 1 89 and the one-way valve 2 811 are opened to introduce low-temperature inert gas into the inner shell 3 to reduce the temperature inside the inner shell 3. The combination of the two can realize flexible regulation of the temperature in the furnace.

[0053] Various modifications to these embodiments will be apparent to those skilled in the art. The general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An intelligent temperature-controlled pre-sintering device for preparing tungsten-copper alloy, comprising a furnace body (1), wherein the interior of the furnace body (1) is fixedly connected to an inner shell (3) via a support rod (2), and an insulation shell (4) is provided on the inner wall of the inner shell (3), characterized in that: A cover (5) is clamped at the opening at the top of the furnace body (1); a lifting block (6) is arranged on the lower surface of the cover (5); the lifting block (6) is inserted into the top wall openings of the inner shell (3) and the heat-insulating shell (4); a lifting mechanism (7) is arranged on the lower surface of the lifting block (6) and on the inner side of the inner shell (3); a circulation mechanism (8) is arranged on the lifting block (6); and a heating mechanism (9) is arranged in the inner shell (3); The hanging mechanism (7) comprises a hanging plate (71), a mounting hole (72), a placement plate (73) and a temperature measuring probe (74); the top ends of a plurality of the hanging plates (71) are fixedly connected to the lower surface of the hanging plate (71) and are arranged in a ring shape with the axis of the hanging block (6) as a reference; a plurality of mounting holes (72) are provided on the hanging plate (71) at equal distances from top to bottom; the bottom wall of the mounting hole (72) is fixedly connected to the placement plate (73); and the inner side of the hanging plate (71) is provided with a temperature measuring probe (74); The circulation mechanism (8) comprises a circulation chamber (81), a driving motor (82), a rotating shaft (83), a circulation blade (84), a circulation air hole (85), a return hole (86), a return pipe (87), a connecting hole 1 (88), a check valve 1 (89), a connecting hole 2 (810) and a check valve 2 (811); the circulation chamber (81) is opened in the middle of the hanging block (6); the driving motor (82) is fixedly mounted in the middle of the upper surface of the cover (5); the output end of the driving motor (82) is fixedly connected to the rotating shaft (83); the bottom end of the rotating shaft (83) extends into the circulation chamber (81) and is fixedly connected to the circulation blade (84); the circulation air hole (85) is opened in the circulation chamber (81); The middle part of the bottom wall of the cavity (81) is connected to the inner shell (3), and the left and right sides of the lifting block (6) are both provided with a return hole (86) connected to the circulation cavity (81), and the two return holes (86) are both fixedly connected with a return pipe (87), and the end of the return pipe (87) away from the return hole (86) is plugged into the plug hole (10) at the top of the inner shell (3) and the insulation shell (4), and the upper left and upper right of the circulation cavity (81) are respectively provided with a communication hole 1 (88) and a communication hole 2 (810), and the openings of the communication hole 1 (88) and the communication hole 2 (810) away from the circulation cavity (81) are both located at the top of the cover (5) and are respectively provided with a one-way valve 1 (89) and a one-way valve 2 (811); The heating mechanism (9) comprises a top ring (91), a bottom plate (92), a central shaft (93), a worm gear (94), a regulating motor (95), a worm (96), a regulating plate (97), a connecting rod (98), a sliding block (99), a sliding groove (910), a regulating gear (911), an annular tooth groove (912), a rack (913), a linkage shaft (914), a contact sheet (915), a strip hole (916) and a heating element (917). The top ring (91) is fixedly connected to the inner top wall of the heat-insulating shell (4). The bottom plate (92) The top end of the central shaft (93) is fixedly connected to the middle part of the lower surface of the bottom plate (92), and the bottom end of the central shaft (93) passes through the thermal insulation shell (4) and the inner shell (3) to the furnace body (1) and the inner shell (3). The worm gear (94) is fixedly connected to the position of the central shaft (93) outside the inner shell (3). The regulating motor (95) is fixedly installed on the inner bottom wall of the furnace body (1), and the worm (96) at the output end of the regulating motor (95) is meshed with the worm gear (94). A plurality of regulating plates (97) are arranged at the bottom of the furnace body (1). The top ring (91) and the bottom plate (92) are arranged in a ring shape with the axis of the top ring (91) as a reference. The sliding groove (910) is provided on the lower surface of the top ring (91). A sliding block (99) is slidably connected in the sliding groove (910). The lower surface of the sliding block (99) is connected to the top wall of the regulating plate (97) through a connecting rod (98). An annular tooth groove (912) is provided on the side wall of the sliding groove (910). A rack (913) is installed on the outer side wall of the annular tooth groove (912). The connecting rod (98) is fixedly connected to the position corresponding to the rack (913). A regulating gear (911) is provided and meshes with a rack (913); a linkage shaft (914) is fixedly connected to a position at the bottom of the regulating plate (97) corresponding to the connecting rod (98); the linkage shaft (914) is movably connected to the upper surface of the chassis (92) through a bearing; a contact piece (915) is installed in an arc groove on the lower surface of the chassis (92), and the linkage shaft (914) is in contact with the contact piece (915); a strip hole (916) is opened in the middle of the regulating plate (97); a heating element (917) is fixedly installed between the upper and lower walls of the strip hole (916).

2. The intelligent temperature-controlled pre-sintering equipment for preparing tungsten-copper alloy according to claim 1 is characterized in that: The heating element (917) is a graphite heating rod. The heating mechanism (9) further comprises a circulation hole (918) and a shielding plate (919). Two groups of circulation holes (918) are respectively arranged on the upper and lower sides of the regulating plate (97). Two circulation holes (918) form a group and are symmetrical with respect to the axis of the heating element (917). Two groups of shielding plates (919) are respectively arranged on the two side surfaces of the regulating plate (97). Two shielding plates (919) form a group and are respectively fixedly connected to the side edges of the strip hole (916). The shielding plate (919) is an arc-shaped plate and the spacing between the shielding plate (919) and the heating element (917) is in the range of 5-8 cm. The spacing between the heating element (917) and the side wall of the strip hole (916) is in the range of 5-8 cm.

3. The intelligent temperature-controlled pre-sintering equipment for preparing tungsten-copper alloy according to claim 2 is characterized in that: The number of the regulating plates (97) is eight, and when adjacent regulating plates (97) are in contact, the cross-sections of the eight regulating plates (97) are octagonal.

4. The intelligent temperature-controlled pre-sintering equipment for preparing tungsten-copper alloy according to claim 3 is characterized in that: A water tank (11) is arranged on the right side of the furnace body (1), and a circular pipe fitting (12) is arranged inside the water tank (11). A water inlet hole and a water outlet hole are respectively arranged at the upper and lower ends of the right side of the water tank (11). Both ends of the circular pipe fitting (12) are located at the top of the water tank (11) and are respectively fixedly connected to the outlet end of the air inlet pipe (13) and the air inlet end of the air outlet pipe (14). The air inlet end of the air inlet pipe (13) is connected to a one-way valve (89), and the air outlet end of the air outlet pipe (14) is connected to a two-way valve (811).

5. The intelligent temperature-controlled pre-sintering equipment for preparing tungsten-copper alloy according to claim 4, characterized in that: An inert gas storage tank (15) is provided on the top of the furnace body (1), and a gas outlet end of the inert gas storage tank (15) is connected to a gas outlet pipe (14) and is provided with a switch valve (16).

6. The intelligent temperature-controlled pre-sintering equipment for preparing tungsten-copper alloy according to claim 5, characterized in that: The placement plate (73) is bowl-shaped, and the inner wall of the placement plate (73) is fixedly connected with four annularly arranged pads (17) for material placement, and the bottoms of the four hanging plates (71) are fixedly connected via a conical shell (18).

7. The intelligent temperature-controlled pre-sintering equipment for preparing tungsten-copper alloy according to claim 6, characterized in that: A conical nozzle (19) is provided at the bottom opening of the circulation air hole (85), and the tip of the conical shell (18) points to the conical nozzle (19).

8. The intelligent temperature-controlled pre-sintering equipment for preparing tungsten-copper alloy according to claim 7, characterized in that: The edge of the upper surface of the cover (5) is provided with a lifting ring (20) for lifting the cover (5), and the bottom wall of the inner shell (3) is plugged with a battery core (21) and in contact with a contact sheet (915) for power supply.

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