Hydrogen explosion-proof device

Abstract

The utility model relates to the technical field of magnetic material preparation, in particular to a hydrogen explosion-proof device which comprises a sintering furnace, a roots pump, a mechanical pump, a second connecting pipe, a nitrogen pipe and a storage tank, the roots pump is connected to the sintering furnace, the second connecting pipe is connected between the roots pump and the mechanical pump, the nitrogen pipe communicates with the second connecting pipe, the nitrogen pipe is used for introducing nitrogen into the second connecting pipe, and the storage tank is connected with the storage tank. The storage tank is connected to the mechanical pump, the roots pump is used for transferring gas in the sintering furnace into the second connecting pipe, and the mechanical pump is used for transferring gas in the second connecting pipe into the storage tank. Nitrogen is introduced into the second connecting pipe through the nitrogen pipe to reduce the concentration of hydrogen in the second connecting pipe, so that the concentration of hydrogen in the second connecting pipe and the storage tank is within a safety range, the possibility of device explosion caused by too high hydrogen concentration is reduced, and the overall operation safety of the device is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of magnetic material preparation, and in particular to a hydrogen explosion-proof device. Background Art

[0002] Sintered NdFeB permanent magnet materials are widely used in electronics, electromechanics, communications, instruments, medical and military fields due to their excellent comprehensive magnetic properties. With the development of application needs, the amount of sintered NdFeB magnets is increasing. There is a hydrogen crushing process in the preparation process of sintered NdFeB magnets. The hydrogenation crushing method is to expand the lattice by hydrogen absorption and refine the particle size by dehydrogenation reduction. Hydrogen absorption or dehydrogenation is a reversible chemical reaction process. The physical and chemical reaction will cause changes in its chemical composition and magnetic properties.

[0003] In the prior art, when the sintering furnace extracts hydrogen, hydrogen remains in the entire exhaust device. When the hydrogen concentration in the device is too high, the device is at risk of explosion. Utility Model Content

[0004] In order to dilute the concentration of hydrogen in the device and ensure the safe operation of the device, the present application provides a hydrogen explosion-proof device.

[0005] The hydrogen explosion-proof device provided in this application adopts the following technical solution:

[0006] A hydrogen explosion-proof device comprises a sintering furnace, a Roots pump, a mechanical pump, a second connecting pipe, a nitrogen pipe and a storage tank, wherein the Roots pump is connected to the sintering furnace, the second connecting pipe is connected between the Roots pump and the mechanical pump, the nitrogen pipe is communicated with the second connecting pipe, the nitrogen pipe is used for introducing nitrogen into the second connecting pipe, the storage tank is connected to the mechanical pump, the Roots pump is used for transferring the gas in the sintering furnace to the second connecting pipe, and the mechanical pump transfers the gas in the second connecting pipe to the storage tank.

[0007] By adopting the above technical solution, nitrogen is introduced into the second connecting pipe through the nitrogen pipe to reduce the concentration of hydrogen in the second connecting pipe, so that the concentration of hydrogen in the second connecting pipe and the storage tank is within a safe range, reducing the possibility of explosion of the device due to excessively high hydrogen concentration, thereby ensuring the overall operation safety of the device.

[0008] Preferably, it also includes an electromagnetic three-way valve, the air inlet of the electromagnetic three-way valve is connected to the nitrogen pipe, one air outlet of the electromagnetic three-way valve is connected to the second connecting pipe, and the other air outlet of the electromagnetic three-way valve is connected to the storage tank.

[0009] By adopting the above technical solution, the electromagnetic three-way valve can automatically control the on and off of the two gas outlets according to the electrical signal, thereby improving work efficiency. One gas outlet is connected to the storage tank to reduce the concentration of hydrogen in the storage tank and ensure the safe use of the storage tank.

[0010] Preferably, it also includes a pressure gauge, which is connected to the outside of the storage tank and is used to detect the pressure in the storage tank.

[0011] By adopting the above technical solution, the pressure gauge is connected to the outside of the storage tank, which is convenient for the staff to observe the pressure gauge reading and judge the gas pressure status in the storage tank, thereby reducing the possibility of hydrogen explosion due to excessive pressure.

[0012] Preferably, it also includes a cooling mechanism, which includes a liquid storage tank, a heat dissipation pipe and a cooling box. The liquid storage tank is connected to the upper end of the storage tank. The liquid storage tank is provided with a liquid storage cavity, and the liquid storage cavity is used to store cooling water. One end of the heat dissipation pipe is connected to the liquid storage cavity. The heat dissipation pipe is arranged around the outer periphery of the storage tank, and the other end of the heat dissipation pipe extends into the cooling box.

[0013] By adopting the above technical solution, cooling water is stored in the liquid storage cavity and flows to the cooling box through the heat dissipation pipe, thereby achieving heat dissipation of the storage tank, so that the gas in the storage tank is at a suitable temperature, reducing the possibility of hydrogen explosion.

[0014] Preferably, the cooling mechanism further comprises a pump head and a transmission assembly, the liquid inlet of the pump head is connected to the cooling box through a pipeline, the liquid outlet of the pump head is connected to the liquid storage tank through a pipeline, and the transmission assembly is connected between the Roots pump and the pump head.

[0015] By adopting the above technical solution, the used cooling water is stored in the cooling box for cooling. The Roots pump drives the pump head through the transmission component to transfer the cooling water to the liquid storage tank, automatically replenishing the cooling water in the liquid storage tank and improving work efficiency.

[0016] Preferably, the cooling mechanism also includes an opening and closing component, which includes an opening and closing part, which is rotatably connected to the heat dissipation pipe and covers the liquid outlet of the heat dissipation pipe. The rotation direction of the opening and closing part is perpendicular to the axial direction of the heat dissipation pipe, and the opening and closing part is used to control the opening and closing of the heat dissipation pipe.

[0017] By adopting the above technical solution, the opening and closing of the heat dissipation pipeline is controlled by the opening and closing parts, the contact time between the cooling water and the storage tank is prolonged, and the utilization rate of the cooling water is improved.

[0018] Preferably, the opening and closing assembly also includes a turntable, a butt block, a first reset member, a sliding seat, a second reset member, a gear and an active rack, the turntable is coaxially connected to the input shaft of the pump head, the butt block is slidably connected to the turntable, the sliding direction of the butt block is parallel to the radial direction of the turntable, the first reset member is connected between the butt block and the turntable, the first reset member makes the butt block have a tendency to move away from the outer periphery of the turntable, the sliding seat is slidably connected to the cooling box, the sliding direction of the sliding seat is parallel to the sliding direction of the opening and closing member, the sliding seat is used for the butt block to abut, the second reset member is connected between the sliding seat and the cooling box, the second reset member makes the sliding seat have a tendency to approach the turntable, the gear is connected to the opening and closing member, the axis of the gear coincides with the rotation axis of the opening and closing member, the active rack is slidably connected to the cooling box, the sliding direction of the active rack is parallel to the sliding direction of the sliding seat, the active rack is meshed with the gear, and one end of the sliding seat is connected to the active rack.

[0019] By adopting the above technical scheme, when the pump head pumps water, the turntable rotates, driving the abutment block to rotate. The abutment block slides in the direction away from the center of the turntable under the action of centrifugal force, abuts the sliding seat, and pushes the sliding seat to overcome the elastic force of the second reset member to slide, driving the opening and closing member to slide, so that the heat dissipation pipe is connected with the cooling box, and the cooling water in the heat dissipation pipe is discharged, so that the cooling water with the lowest temperature in the liquid storage tank can enter the heat dissipation pipe. When the pump head stops working, the sliding plate slides in the direction close to the turntable under the action of the second reset member, driving the opening and closing member to slide, so that the opening and closing member covers the water outlet of the heat dissipation pipe, thereby improving the degree of automation of the equipment.

[0020] Preferably, the opening and closing assembly also includes a heat expansion block, a sliding block and a driven rack, the driven rack is slidably connected to the cooling box, the sliding direction of the driven rack is parallel to the sliding direction of the active rack, the driven rack is meshed with the gear, the sliding block is slidably connected to the storage tank, the sliding direction of the sliding block is parallel to the sliding direction of the driven rack, the heat expansion block is connected to the storage tank, one end of the heat expansion block abuts against one end of the sliding block, and the other end of the sliding block abuts against one end of the driven rack.

[0021] By adopting the above technical solution, when the water pump has not been running for a long time, if the temperature of the gas in the storage tank rises, the heat expansion block expands due to the heat, pushing the opening and closing part to slide, so that the heat dissipation pipe opens, the cooling water with a higher temperature in the heat dissipation pipe is discharged, and the cooling water with a lower temperature is introduced to cool the storage tank.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. Introduce nitrogen into the second connecting pipe through the nitrogen pipe to reduce the concentration of hydrogen in the second connecting pipe, so that the concentration of hydrogen in the second connecting pipe and the storage tank is within a safe range, reducing the possibility of explosion of the device due to excessive hydrogen concentration, and ensuring the overall operation safety of the device;

[0024] 2. The pressure gauge is connected to the outside of the storage tank, which is convenient for the staff to observe the pressure gauge reading and judge the gas pressure status in the storage tank, thereby reducing the possibility of hydrogen explosion due to excessive pressure;

[0025] 3. The cooling water is stored in the liquid storage cavity and flows to the cooling box through the heat dissipation pipe to dissipate the heat of the storage tank, so that the gas in the storage tank is at a suitable temperature, reducing the possibility of hydrogen explosion. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of a hydrogen explosion-proof device.

[0027] Figure 2 It is a partial cross-sectional view of the storage tank and cooling mechanism.

[0028] Figure 3 It is a partial cross-sectional view of the hydrogen explosion-proof device.

[0029] Figure 4 yes Figure 1 Enlarged view of point A in the middle.

[0030] Figure 5 yes Figure 3 Enlarged view of point B in the middle.

[0031] Figure 6 It is a partial structural diagram of the hydrogen explosion-proof device.

[0032] Description of reference numerals:

[0033] 1. Sintering furnace; 11. Connecting pipe;

[0034] 2. Roots pump;

[0035] 3. Mechanical pump;

[0036] 4. Storage tank;

[0037] 5. Solenoid three-way valve;

[0038] 61, first connecting pipe; 62, second connecting pipe; 63, nitrogen pipe; 631, main pipe; 632, first branch pipe; 633, second branch pipe; 64, third connecting pipe;

[0039] 7. Pressure gauge;

[0040] 8. Cooling mechanism; 81. Liquid storage tank; 811. First tank body; 8111. Liquid storage cavity; 8112. Liquid filling port; 8113. First liquid outlet; 812. Tank cover; 82. Heat dissipation pipe; 821. First connecting section; 822. Spiral section; 823. Second connecting section; 83. Cooling tank; 831. Second tank body; 8311. Cooling cavity; 8312. Second liquid outlet; 8313. Seat; 8314. Slide; 832. Filter plate; 84. Pump head; 85. Transmission assembly; 851. Driving pulley ; 852, driven pulley; 853, belt body; 86, opening and closing assembly; 861, opening and closing member; 8611, valve core; 8612, rotating rod; 862, rotating disk; 8621, embedded groove; 863, abutment block; 864, first reset member; 865, sliding seat; 8651, embedded block; 8652, first push rod; 866, second reset member; 867, gear; 868, active rack; 869, heat expansion block; 8610, sliding block; 86101, second push rod; 8620, driven rack. DETAILED DESCRIPTION

[0041] The present application is further described in detail below in conjunction with the accompanying drawings.

[0042] Reference Figure 1 The embodiment of the present application discloses a hydrogen explosion-proof device including a sintering furnace 1, a Roots pump 2 and a first connecting pipe 61. A connecting pipe 11 is connected to the upper end of the sintering furnace 1, one end of the first connecting pipe 61 is fixedly connected to the end of the connecting pipe 11 away from the sintering furnace 1, the first connecting pipe 61 is connected to the connecting pipe 11, the other end of the first connecting pipe 61 is fixedly connected to the Roots pump 2, and the first connecting pipe 61 is connected to the air inlet of the Roots pump 2.

[0043] A hydrogen explosion-proof device also includes a second connecting pipe 62, a mechanical pump 3 and a storage tank 4. One end of the second connecting pipe 62 is fixedly connected to the Roots pump 2, and the second connecting pipe 62 is communicated with the gas outlet of the Roots pump 2. The Roots pump 2 is used to transfer the gas in the sintering furnace 1 to the second connecting pipe 62. The other end of the second connecting pipe 62 is fixedly connected to the mechanical pump 3, and the storage tank 4 is fixedly connected to the upper end of the mechanical pump 3. The mechanical pump 3 is used to transfer the gas in the second connecting pipe 62 to the storage tank 4.

[0044] A hydrogen explosion-proof device also includes a nitrogen pipe 63, an electromagnetic three-way valve 5 and a third connecting pipe 64. The nitrogen pipe 63 includes a main pipe 631, a first branch pipe 632 and a second branch pipe 633. The main pipe 631 is located between the sintering furnace 1 and the second pipeline. One end of the first branch pipe 632 is fixedly connected to the outer periphery of the main pipe 631, and the other end of the first branch pipe 632 is fixedly connected to the outer periphery of the sintering furnace 1. The first branch pipe 632 connects the sintering furnace 1 with the main pipe 631. The electromagnetic three-way valve 5 is fixedly connected to the outer periphery of the second connecting pipe 62, an air outlet of the electromagnetic three-way valve 5 is connected to the second connecting hole, one end of the second branch pipe 633 is fixedly connected to the outer periphery of the main pipe 631, and the other end of the second branch pipe 633 is fixedly connected to the electromagnetic three-way valve 5. The second branch pipe 633 connects the main pipe 631 with the air inlet of the electromagnetic three-way valve 5. One end of the third connecting pipe 64 is fixedly connected to the electromagnetic three-way valve 5 , and the other end of the third connecting pipe 64 is fixedly connected to the outer periphery of the storage tank 4 . The third connecting pipe 64 connects another air outlet of the electromagnetic three-way valve 5 with the storage tank 4 .

[0045] Reference Figure 1 and Figure 2 A hydrogen explosion-proof device further includes a pressure gauge 7. The pressure gauge 7 is fixedly connected to the outside of the storage tank 4, one end of the pressure gauge 7 extends into the storage tank 4, and the pressure gauge 7 is used to detect the pressure in the storage tank 4.

[0046] A hydrogen explosion-proof device also includes a cooling mechanism 8. The cooling mechanism 8 includes a liquid storage tank 81 and a heat dissipation pipe 82. The liquid storage tank 81 includes a first box body 811 and a box cover 812. The first box body 811 is fixedly connected to the upper end of the storage tank 4. The first box body 811 is provided with a liquid storage cavity 8111, and the liquid storage cavity 8111 is used to store cooling water. A liquid filling port 8112 is provided at the upper cavity wall of the liquid storage cavity 8111, and the box cover 812 is threadedly connected to the first box body 811 and covers the liquid filling port 8112. A first liquid outlet 8113 is provided on the wall of the liquid storage cavity 8111, and the heat dissipation pipe 82 includes a first connecting section 821, a spiral section 822 and a second connecting section 823. One end of the first connecting section 821 is fixedly connected to the outer periphery of the first box body 811, and the first connecting section 821 is communicated with the first liquid outlet 8113 of the liquid storage tank 81. The other end of the first connecting section 821 is fixedly connected to the upper end of the spiral section 822. The spiral section 822 is wound around the outer periphery of the storage tank 4, and the upper end of the second connecting section 823 is fixedly connected to the lower end of the spiral section 822.

[0047] Reference Figure 1 and Figure 3The cooling mechanism 8 further includes a cooling box 83, which is located on the side of the mechanical pump 3 away from the Roots pump 2. The cooling box 83 includes a second box body 831 and a filter plate 832. A cooling cavity 8311 is provided at the upper end of the second box body 831, and the filter plate 832 is connected to the second box body 831 and covers the opening of the cooling cavity 8311. The second connecting section 823 is arranged vertically, and the lower end of the second connecting section 823 penetrates the filter plate 832 and then extends into the cooling cavity 8311.

[0048] Reference Figure 1 and Figure 4 The cooling mechanism 8 also includes a pump head 84 and a transmission assembly 85. The pump head 84 is located on the side of the cooling box 83 away from the mechanical pump 3. The wall of the cooling cavity 8311 away from the mechanical pump 3 is provided with a second liquid outlet 8312. The liquid inlet of the pump head 84 is connected to the second liquid outlet 8312 of the second box body 831 through a pipeline. The transmission assembly 85 is connected between the Roots pump 2 and the pump head 84. The transmission assembly 85 includes a driving pulley 851, a driven pulley 852 and a belt body 853. The driving pulley 851 is coaxially fixedly connected to the output shaft of the Roots pump 2, the driven pulley 852 is coaxially fixedly connected to the input shaft of the pump head 84, and the belt body 853 is sleeved on the outer periphery of the driving pulley 851 and the driven pulley 852.

[0049] Reference Figure 3 and Figure 5 The cooling mechanism 8 also includes an opening and closing assembly 86. The opening and closing assembly 86 includes an opening and closing member 861. The opening and closing member 861 is rotatably connected to the second connecting section 823, and the rotation axis of the opening and closing member 861 is parallel to the rotation axis of the driven pulley 852. The opening and closing member 861 is used to control the on and off of the second connecting section 823. The opening and closing member 861 includes a valve core 8611 and a rotating rod 8612. The valve core 8611 is rotatably embedded in the second connecting section 823, and the rotation axis of the valve core 8611 is parallel to the axis of the driven pulley 852. One end of the rotating rod 8612 is fixedly connected to the outer periphery of the valve core 8611, and the other end of the rotating rod 8612 passes through the second connecting section 823 and the second box body 831 in sequence and then extends out of the second box body 831. The rotating rod 8612 is rotatably connected to the second box body 831, and the rotation axis of the rotating rod 8612 is the rotation axis of the valve core 8611.

[0050] Reference Figure 6The opening and closing assembly 86 also includes a turntable 862, an abutment block 863 and a first reset member 864. The turntable 862 is coaxially fixedly connected to the input shaft of the pump head 84. The turntable 862 is located on the side of the driven pulley 852 close to the second box body 831. A plurality of embedded grooves 8621 are provided on the outer periphery of the turntable 862. The plurality of embedded grooves 8621 are evenly distributed circumferentially around the axis of the turntable 862. The groove depth direction of the embedded groove 8621 is parallel to the radial direction of the turntable 862. In this embodiment, six embedded grooves 8621 are provided. The number of abutment blocks 863 and the first reset member 864 is the same as the number of embedded grooves 8621 and corresponds one to one. The abutment block 863 is slidably embedded in the embedded groove 8621, and the sliding direction of the abutment block 863 is parallel to the groove depth direction of the embedded groove 8621. The first restoring member 864 is connected between the abutting block 863 and the rotating disk 862, and the first restoring member 864 makes the abutting block 863 have a tendency to be embedded in the embedding groove 8621. In this embodiment, the first restoring member 864 is a spring, one end of the first restoring member 864 is connected to one end of the abutting block 863 close to the bottom of the embedding groove 8621, and the other end of the first restoring member 864 is connected to the bottom of the embedding groove 8621.

[0051] The opening and closing assembly 86 also includes a sliding seat 865 and a second reset member 866. The second box body 831 is connected to a seat body 8313 on one side close to the pump head 84. The sliding seat 865 is slidably connected to the upper end of the seat body 8313. The sliding direction of the sliding seat 865 is perpendicular to the axis of the turntable 862. A slide groove 8314 is provided at the upper end of the seat body 8313. The slide groove 8314 extends along the sliding direction of the sliding seat 865. The lower end of the sliding seat 865 is connected to an insert 8651. The insert 8651 is slidably embedded in the slide groove 8314. The sliding direction of the insert 8651 is parallel to the length direction of the slide groove 8314. In this embodiment, the insert 8651 is a dovetail block. The second reset member 866 is connected between the sliding seat 865 and the seat body 8313. The second reset member 866 makes the sliding seat 865 have a tendency to approach the turntable 862. In this embodiment, the second reset member 866 is a spring, one end of the second reset member 866 is connected to the side of the insert block 8651 away from the rotating disk 862, and the other end of the second reset member 866 is connected to the side wall of the slide groove 8314 away from the rotating disk 862. The side surface of the sliding seat 865 close to the rotating disk 862 is used for abutting against one end of the abutting block 863 away from the bottom of the insert groove 8621.

[0052] Reference Figure 5 and Figure 6The opening and closing assembly 86 further includes a gear 867 and an active rack 868. The gear 867 is coaxially fixedly connected to the end of the rotating rod 8612 away from the valve core 8611, and the active rack 868 is slidably connected to the second box body 831. The sliding direction of the active rack 868 is parallel to the sliding direction of the sliding seat 865. The active rack 868 is located below the gear 867, and the active rack 868 is meshed with the gear 867. The side of the sliding seat 865 close to the second box body 831 is connected to the first push rod 8652, and the other end of the first push rod 8652 abuts against the end of the active rack 868 close to the pump head 84.

[0053] Reference Figure 3 and Figure 6 The opening and closing assembly 86 further includes a heat expansion block 869, a sliding block 8610 and a driven rack 8620. The driven rack 8620 is slidably connected to the second box body 831, and the sliding direction of the driven rack 8620 is parallel to the sliding direction of the active rack 868. The driven rack 8620 is located on the side of the gear 867 away from the active rack 868, and the driven rack 8620 is meshed with the gear 867. One end of the heat expansion block 869 away from the second box body 831 is fixedly connected to the storage tank 4, the sliding block 8610 is slidably connected to the storage tank 4, the sliding direction of the sliding block 8610 is parallel to the sliding direction of the driven rack 8620, and one end of the heat expansion block 869 close to the second box body 831 abuts against a side surface of the sliding block 8610 away from the second box body 831. The end of the sliding block 8610 away from the heat expansion block 869 is connected to the second push rod 86101, and the lower end of the second push rod 86101 abuts against one end of the driven rack 8620 close to the mechanical pump 3.

[0054] The implementation principle of a hydrogen explosion-proof device in the embodiment of the present application is as follows: the electromagnetic three-way valve 5 opens the gas outlet connected to the second connecting pipe 62, and nitrogen is passed into the second connecting pipe 62 to reduce the concentration of hydrogen in the second connecting pipe 62. The Roots pump 2 is connected to the sintering furnace 1 through the first connecting pipe 61, and the Roots pump 2 transfers the gas in the sintering furnace 1 to the second connecting pipe 62, and the mechanical pump 3 transfers the mixed gas in the second connecting pipe 62 to the storage tank 4. The electromagnetic three-way valve 5 opens the gas outlet connected to the storage tank 4, and nitrogen is passed into the storage tank 4 to reduce the concentration of hydrogen in the storage tank 4. The pressure in the storage tank 4 is observed by the pressure gauge 7.

[0055] The Roots pump 2 works, driving the active pulley 851 to rotate, driving the driven pulley 852 to rotate through the belt body 853, and then driving the pump head 84 to work, and delivering the cooling water from the cooling chamber 8311 to the liquid storage chamber 8111. The turntable 862 rotates, driving the abutment block 863 to rotate, and the abutment block 863 slides in a direction away from the bottom of the groove 8621 under the action of centrifugal force, and the abutment block 863 abuts the sliding seat 865, pushing the sliding seat 865 to overcome the elastic force of the second reset member 866 and slide in a direction away from the turntable 862, driving the active rack 868 to slide, driving the gear 867 to rotate, and driving the opening and closing member 861 to rotate, so that the heat dissipation pipe 82 is connected with the cooling chamber 8311, so that the cooling water in the heat dissipation pipe 82 flows into the cooling chamber 8311, and the cooling water in the liquid storage chamber 8111 flows into the heat dissipation pipe 82, so as to realize the cooling of the storage tank 4. The Roots pump 2 stops working, the turntable 862 stops rotating, the abutment block 863 is embedded in the embedding groove 8621 under the action of the first reset member 864, and the sliding seat 865 slides toward the turntable 862 under the action of the second reset member 866, driving the opening and closing member 861 to rotate and cover the liquid outlet of the heat dissipation pipe 82.

[0056] When the temperature in the storage tank 4 is too high, the heat expansion block 869 expands due to the heat, pushing the sliding block 8610 to slide, driving the driven rack 8620 to slide, driving the gear 867 to rotate, and driving the opening and closing member 861 to rotate, so that the heat dissipation pipe 82 is connected to the cooling chamber 8311, allowing the cooling water with a higher temperature in the heat dissipation pipe 82 to flow out, making it easier for the cooling water with a lower temperature in the liquid storage chamber 8111 to enter the heat dissipation pipe 82, thereby cooling the storage tank 4.

[0057] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A hydrogen explosion-proof device, characterized in that: The invention comprises a sintering furnace (1), a Roots pump (2), a mechanical pump (3), a second connecting pipe (62), a nitrogen pipe (63) and a storage tank (4); the Roots pump (2) is connected to the sintering furnace (1); the second connecting pipe (62) is connected between the Roots pump (2) and the mechanical pump (3); the nitrogen pipe (63) is connected to the second connecting pipe (62); the nitrogen pipe (63) is used to introduce nitrogen into the second connecting pipe (62); the storage tank (4) is connected to the mechanical pump (3); the Roots pump (2) is used to transfer the gas in the sintering furnace (1) to the second connecting pipe (62); and the mechanical pump (3) transfers the gas in the second connecting pipe (62) to the storage tank (4).

2. The hydrogen explosion-proof device according to claim 1, characterized in that: It also comprises an electromagnetic three-way valve (5); an air inlet of the electromagnetic three-way valve (5) is connected to a nitrogen pipe (63); an air outlet of the electromagnetic three-way valve (5) is connected to a second connecting pipe (62); and another air outlet of the electromagnetic three-way valve (5) is connected to a storage tank (4).

3. The hydrogen explosion-proof device according to claim 1, characterized in that: It also includes a pressure gauge (7); the pressure gauge (7) is connected to the outside of the storage tank (4); the pressure gauge (7) is used to detect the pressure in the storage tank (4).

4. The hydrogen explosion-proof device according to claim 1, characterized in that: It also comprises a cooling mechanism (8); the cooling mechanism (8) comprises a liquid storage tank (81), a heat dissipation pipe (82) and a cooling box (83); the liquid storage tank (81) is connected to the upper end of the storage tank (4); the liquid storage tank (81) is provided with a liquid storage cavity (8111); the liquid storage cavity (8111) is used to store cooling water; one end of the heat dissipation pipe (82) is connected to the liquid storage cavity (8111); the heat dissipation pipe (82) is arranged around the outer periphery of the storage tank (4); and the other end of the heat dissipation pipe (82) extends into the cooling box (83).

5. The hydrogen explosion-proof device according to claim 4, characterized in that: The cooling mechanism (8) further comprises a pump head (84) and a transmission assembly (85); the liquid inlet of the pump head (84) is connected to the cooling box (83) via a pipeline; the liquid outlet of the pump head (84) is connected to the liquid storage box (81) via a pipeline; and the transmission assembly (85) is connected between the Roots pump (2) and the pump head (84).

6. The hydrogen explosion-proof device according to claim 5, characterized in that: The cooling mechanism (8) further comprises an opening and closing assembly (86); the opening and closing assembly (86) comprises an opening and closing member (861); the opening and closing member (861) is rotatably connected to the heat dissipation pipe (82) and covers the liquid outlet of the heat dissipation pipe (82); the rotation direction of the opening and closing member (861) is perpendicular to the axial direction of the heat dissipation pipe (82); the opening and closing member (861) is used to control the opening and closing of the heat dissipation pipe (82).

7. The hydrogen explosion-proof device according to claim 6, characterized in that: The opening and closing assembly (86) further comprises a rotating disk (862), an abutment block (863), a first reset member (864), a sliding seat (865), a second reset member (866), a gear (867) and an active rack (868); the rotating disk (862) is coaxially connected to the input shaft of the pump head (84); the abutment block (863) is slidably connected to the rotating disk (862); the sliding direction of the abutment block (863) is parallel to the radial direction of the rotating disk (862); the first reset member (864) is connected between the abutment block (863) and the rotating disk (862); the first reset member (864) makes the abutment block (863) have a tendency to move away from the outer periphery of the rotating disk (862); the sliding seat (865) is slidably connected to the cooling box (83); the sliding direction of the sliding seat (865) is parallel to the radial direction of the rotating disk (862); The sliding seat (865) is used for abutting the abutment block (863); the second reset member (866) is connected between the sliding seat (865) and the cooling box (83); the second reset member (866) makes the sliding seat (865) have a tendency to approach the turntable (862); the gear (867) is connected to the opening and closing member (861); the axis of the gear (867) coincides with the rotation axis of the opening and closing member (861); the active rack (868) is slidably connected to the cooling box (83); the sliding direction of the active rack (868) is parallel to the sliding direction of the sliding seat (865); the active rack (868) is meshed with the gear (867); one end of the sliding seat (865) is connected to the active rack (868).

8. The hydrogen explosion-proof device according to claim 7, characterized in that: The opening and closing assembly (86) further comprises a heat expansion block (869), a sliding block (8610) and a driven rack (8620); the driven rack (8620) is slidably connected to the cooling box (83); the sliding direction of the driven rack (8620) is parallel to the sliding direction of the driving rack (868); the driven rack (8620) is meshed with the gear (867); the sliding block (8610) is slidably connected to the storage tank (4); the sliding direction of the sliding block (8610) is parallel to the sliding direction of the driven rack (8620); the heat expansion block (869) is connected to the storage tank (4); one end of the heat expansion block (869) abuts against one end of the sliding block (8610); and the other end of the sliding block (8610) abuts against one end of the driven rack (8620).

Images