A safety pressure relief device for a chemical reaction vessel

Abstract

The application discloses a kind of chemical reaction kettle safety pressure relief device, it is related to the technical field of reaction kettle, including reaction kettle body and the sealing cover being installed at the top of reaction kettle body, the partition is fixed in the sealing cover, and the pressure relief passage is in the partition, and the control chamber is formed at the partition top in sealing cover;Rotary setting has the round plate that is attached to the partition in the control chamber, and the square block is fixed on the round plate, and the pressure relief passage is selectively communicated or staggered in the round plate, and the pressure relief passage extends to the interior of square block, and the lower half of pressure relief passage sidewall is provided with installation groove.The chemical reaction kettle safety pressure relief device, by setting air cylinder, sound-absorbing sleeve, cone seat and first spring and other structures, reach the purpose of unloading buffering, reduce the impact force of high-pressure gas, and utilize wave structure to carry out pressure reduction, noise reduction, while controlling the vortex phenomenon of gas at the corner, improve the use efficiency of chemical reaction kettle safety pressure relief device.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of reaction kettles, in particular to a chemical reaction kettle safety pressure relief device. BACKGROUND

[0002] The general understanding of a reaction kettle is a container for physical or chemical reactions. Through structural design and parameter configuration of the container, functions such as heating, evaporation, cooling, and low-speed mixing are achieved to meet process requirements. Reaction kettles are widely used in petroleum, chemical, rubber, pesticide, dye, pharmaceutical, and food industries. They are used to complete processes such as vulcanization, nitration, hydrogenation, alkylation, polymerization, and condensation. They are essential items for chemical production.

[0003] A reaction kettle is a comprehensive reaction vessel. The reaction kettle structure, function, and configuration accessories are designed according to the reaction conditions. The initial feeding, reaction, and discharge can be completed with a high degree of automation to achieve the pre-set reaction steps. The important parameters such as temperature, pressure, mechanical control (mixing, air blowing, etc.), and reactant / product concentration are strictly regulated. During the reaction, some reactants inside the reaction kettle release a large amount of gas during processing, causing the internal pressure of the reaction kettle to increase rapidly. When the internal pressure is too high, it may cause the reaction kettle to explode, so it is necessary to relieve pressure when the internal pressure of the reaction kettle is too high.

[0004] A patent entitled "Reaction Kettle Safety Pressure Relief Device" (Patent Application No. CN202420024573.7) discloses a reaction kettle safety pressure relief device. When pressure relief is required, the sealed multiple pressure relief pipes are slowly unsealed by rotating the exhaust pipe and sealing plate. The pressure relief process does not cause the sealing cover to be blown out by pressure. The pressure relief operation is simple, reducing the likelihood of accidents and the harm to operators. However, the device has a large impact force on the internal cavity of the sealing plate when high-pressure gas is used in actual use, especially in the initial stage of pressure relief, affecting the service life and producing a large amount of noise, and the use efficiency needs to be improved.

[0005] Therefore, it is necessary to provide a chemical reaction kettle safety pressure relief device to solve the above problems. SUMMARY

[0006] The present application aims to provide a chemical reaction kettle safety pressure relief device to solve the problem of the device in actual use, high-pressure gas causing a large impact force on the internal cavity of the sealing plate, especially in the initial stage of pressure relief, affecting the service life, and producing a large amount of noise, and the use efficiency needs to be improved.

[0007] In order to achieve the above object, the present application provides the following technical scheme: a chemical reaction kettle safety pressure relief device, comprising a reaction kettle body and a sealing cover installed at the top end of the reaction kettle body, a partition is fixed in the sealing cover, the partition is provided with a pressure relief channel, and a control chamber is formed above the partition in the sealing cover;

[0008] A circular plate is rotationally arranged in the control chamber and attached to the partition, a square block is fixed on the circular plate, the circular plate is provided with a pressure reduction channel selectively communicated or staggered with the pressure relief channel, the pressure reduction channel extends to the inside of the square block, and a mounting groove is formed in the lower half of the sidewall of the pressure reduction channel and penetrates through the upper surface of the square block;

[0009] A sliding block is slidably arranged in the pressure reduction channel, a gas cylinder is arranged between the sliding block and the top of the pressure reduction channel, a soundproof sleeve in communication with the gas cylinder is arranged in the mounting groove, and the inner ring surface of the soundproof sleeve is switched between corrugated and smooth;

[0010] A conical seat is rotationally arranged at the bottom end of the sliding block, and a blade is fixed to the bottom of the conical seat;

[0011] A first spring is arranged in the gas cylinder, the top end of the first spring abuts against the top of the gas cylinder, and the bottom end of the first spring abuts against the bottom of the gas cylinder;

[0012] An arc-shaped notch is formed in the end of the square block away from the axis of the circular plate, the arc-shaped notch is located in the upper half of the square block, a slide channel in communication with the pressure reduction channel is formed in the arc-shaped notch, an expansion slot is formed in the side of the sliding block close to the arc-shaped notch, an expansion rod is slidably arranged in the expansion slot, a second spring is arranged in the expansion slot, and after the sliding block slides upward, the expansion rod passes through the slide channel and abuts against the bottom end of the arc-shaped notch.

[0013] Preferably, an arc plate is arranged on the side of the square block and fixedly connected to the inner wall of the control chamber, and the arc plate is in abutting engagement with the expansion rod.

[0014] Preferably, a side plate is fixedly connected to the top end of the sliding block, the side plate is arc-shaped, and the side plate is attached to the inner wall of the pressure reduction channel.

[0015] Preferably, the lower surface of the sliding block is inclined, and the end close to the mounting groove is inclined upward.

[0016] Preferably, a plurality of blades are arranged, and the plurality of blades are uniformly distributed around the axis of the conical seat.

[0017] Preferably, the blade is S-shaped.

[0018] Preferably, the mounting groove is inclined, and the end away from the pressure reduction channel is inclined upward.

[0019] Preferably, the top end of the sealing cover is open, and a rotating sleeve is arranged at the opening, the square block is fixedly connected to the rotating sleeve, and a handle is fixedly installed on the outer wall of the rotating sleeve.

[0020] Technical effects and advantages of the present application:

[0021] 1、The air cylinder, the sound attenuation sleeve, the cone seat and the first spring are arranged, so that the force unloading buffering purpose is achieved, the impact force of high-pressure gas is reduced, the switchable wave-shaped structure is used for pressure reduction and noise reduction, the vortex phenomenon of the gas at the bend is controlled, and the use efficiency of the chemical reaction kettle safety pressure relief device is improved.

[0022] 2、The wave-shaped structure is formed at the inner ring of the sound attenuation sleeve, when the gas passes through, the wave-shaped structure changes the movement track of the gas, and the sound attenuation treatment is completed through the collision effect; meanwhile, the wave-shaped structure can absorb part of the impact energy, so that the impact force of the gas is reduced, and the safe pressure relief is realized.

[0023] 3、The wave-shaped structure is formed in the sound attenuation sleeve, and has the elastic deformation characteristic, compared with directly arranging the hard corrugated pipe structure, the effect of reducing the impact force of the gas and the sound attenuation treatment can be ensured.

[0024] 4、When the gas enters the internal cavity of the sound attenuation sleeve, the expansion of the sound attenuation sleeve also provides a certain elastic supporting force for the sliding block, and cooperates with the first spring, so that the force unloading buffering effect is ensured.

[0025] 5、After the pressure relief is completed, the inner ring surface of the sound attenuation sleeve returns to a smooth state, so that the long-term inflation expansion state is avoided, and the service life is prolonged.

[0026] 6、Through the arrangement of the side plate and the telescopic rod, the sliding block is moved upward by using the gas flow as power, and the installation groove and the pressure reduction channel are always kept in the fully open state during the pressure relief process, so that the pressure relief efficiency is ensured, the gas does not flow randomly, and the wave-shaped structure can be maintained.

[0027] 7、The circular plate is rotated to realize the locking and unlocking of the sliding block, and the operation is convenient.

[0028] 8、Through the arrangement of the cone seat and the blade, the flow of the gas at the bend is more orderly, the mutual collision and rotational motion between the gas molecules are reduced, the strength of the vortex is reduced, the impact of the gas on the sliding block, the inner wall of the pressure reduction channel and other positions is reduced, the impact force of the gas is dispersed, and the noise is reduced.

[0029] 9、The blade is in an S shape, so that the flow of the gas on the surface of the blade is smoother, the separation phenomenon of the gas is reduced, and the generation of the vortex is further reduced; and because the flow of the gas on the surface of the blade is smoother, the disorderly motion of the gas and the generation of the vortex are reduced, and the noise is further reduced. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 Structure diagram of safety pressure relief device of chemical reaction kettle of the present application.

[0031] Figure 2 Structure diagram of reaction kettle body and sealing cover of the present application.

[0032] Figure 3 Structure diagram of round plate and pressure relief channel of the present application.

[0033] Figure 4 Structure diagram of the present application Figure 3 Enlarged structure diagram of A in the present application.

[0034] Figure 5 Structure diagram of square block and round plate of the present application.

[0035] Figure 6 Structure diagram of the present application Figure 5 Enlarged structure diagram of B in the present application.

[0036] Figure 7 Structure diagram of round plate and pressure relief channel of the present application.

[0037] Figure 8 Structure diagram of arc-shaped notch and slide of the present application.

[0038] Figure 9 Structure diagram of cone seat and blade of the present application.

[0039] Figure 10 Structure diagram of sealing cover and round plate of the present application.

[0040] Figure 11 Structure diagram of the present application Figure 10 Enlarged structure diagram of C in the present application.

[0041] Figure 12 Structure diagram of sealing cover and arc plate of the present application.

[0042] Figure 13 Structure diagram of rotating sleeve and connecting rod of the present application.

[0043] In the figure: 1, reaction kettle body; 2, sealing cover; 3, square block; 4, control chamber; 5, pressure relief channel; 6, round plate; 7, partition layer; 8, pressure relief channel; 9, air cylinder; 10, sliding block; 11, mounting groove; 12, soundproof sleeve; 13, conveying pipe; 14, cone seat; 15, first spring; 16, side plate; 17, containing groove; 18, arc-shaped notch; 19, slide; 20, telescopic groove; 21, telescopic rod; 22, second spring; 23, blade; 24, arc plate; 25, rotating sleeve; 26, handle; 27, cover plate; 28, perforated plate; 29, connecting rod. DETAILED DESCRIPTION

[0044] The application provides a chemical reaction kettle safety pressure relief device as shown in Figures 1-13 The chemical reaction kettle safety pressure relief device comprises a reaction kettle body 1, and a sealing cover 2 is threadedly connected to the top end of the reaction kettle body 1. Figure 1 、 Figure 2 、 Figure 3 The three annular portions are sequentially arranged from bottom to top, and the diameters of the three annular portions sequentially decrease, wherein the top end of the annular portion at the topmost position is provided with an opening for discharging gas, and the sealing cover 2 can also be provided in other shapes and adjusted according to specific use conditions.

[0045] In order to realize the pressure relief function, a partition layer 7 is fixed in the sealing cover 2, a pressure relief channel 5 is formed through the partition layer 7, and a filter screen can be arranged in the pressure relief channel 5 to intercept solid floating objects flowing with the gas.

[0046] A control chamber 4 is formed above the partition layer 7 in the sealing cover 2, a circular plate 6 is rotatably arranged in the control chamber 4, the circular plate 6 is attached to the partition layer 7, and a rubber pad or the like structure is arranged between the circular plate 6 and the partition layer 7 to reduce wear and ensure sealing.

[0047] The square block 3 is fixed on the circular plate 6, and when the circular plate 6 rotates, the square block 3 rotates around the axis of the circular plate 6; the top end of the square block 3 is attached to the inner wall of the sealing cover 2 to ensure the stability of the rotation of the circular plate 6 and the square block 3, and a wear-resistant pad or the like structure is arranged at the top end of the square block 3 to reduce wear.

[0048] In actual production, the sealing cover 2 is composed of two parts by seamless welding or the like process; the position of the partition layer 7 and below is the lower part, and the position above the partition layer 7 is the upper part; the lower part is drilled or the like to form the pressure relief channel 5, the circular plate 6, the square block 3 and the like structures are placed on the partition layer 7, and then the two parts are assembled, or other assembly methods (such as welding the partition layer 7 in the sealing cover 2) can be used; drilling, welding and assembly are all common technologies, and will not be described here.

[0049] The pressure relief channel 8 extends to the inside of the square block 3, and the top end of the pressure relief channel 8 does not penetrate the upper surface of the square block 3; the inner diameter of the pressure relief channel 8 is the same as that of the pressure relief channel 5; when the square block 3 is rotated by the circular plate 6, if the pressure relief channel 8 is staggered with the pressure relief channel 5, the lower surface of the circular plate 6 can close the pressure relief channel 5; if the pressure relief channel 8 corresponds to the pressure relief channel 5, the gas can enter the pressure relief channel 8 from the pressure relief channel 5.

[0050] The sealing cover 2, the circular plate 6 and the like are made of high-strength materials such as stainless steel, which can withstand high-pressure gas and ensure stable use.

[0051] In actual use, multiple groups of pressure relief channels 5 and pressure reduction channels 8 can be arranged and uniformly distributed around the axis of the reaction kettle body 1 to ensure the pressure relief efficiency, which can be adjusted according to specific use conditions.

[0052] A mounting groove 11 is formed in the lower half of the side wall of the pressure reduction channel 8, which is located on the side of the pressure reduction channel 8 close to the axis of the circular plate 6. The mounting groove 11 is inclinedly arranged, and the end of the mounting groove 11 away from the pressure reduction channel 8 penetrates through the upper surface of the square block 3 and corresponds to the opening at the top end of the sealing cover 2.

[0053] High-pressure gas can enter the pressure reduction channel 8 from the pressure relief channel 5 and be discharged outwardly from the mounting groove 11.

[0054] Considering that high-pressure gas will bring a large impact force to the pressure reduction channel 8 during pressure relief, especially at the initial stage of pressure relief, the pressure is large, which will affect the service life of the chemical reaction kettle, and a large noise will also be generated during the pressure relief process. To achieve the functions of pressure reduction and noise reduction, a sliding block 10 is arranged inside the pressure reduction channel 8. A rubber pad or the like can be arranged on the outer wall of the sliding block 10 to reduce wear and improve sealing performance.

[0055] A gas cylinder 9 is arranged in the pressure reduction channel 8. The top end of the gas cylinder 9 is fixedly connected to the top end of the pressure reduction channel 8, and the bottom end of the gas cylinder 9 is fixedly connected to the sliding block 10. The gas cylinder 9 can be made of, but is not limited to, high-temperature-resistant elastic rubber material and can be telescopic.

[0056] Limiting grooves or limiting blocks (not shown in the figure) can be arranged between the outer wall of the sliding block 10 and the inner wall of the pressure reduction channel 8 to ensure the stability of the sliding block 10 in upward and downward sliding.

[0057] A first spring 15 is arranged inside the gas cylinder 9. The top end of the first spring 15 abuts against the top of the gas cylinder 9, and the bottom end of the first spring 15 abuts against the bottom of the gas cylinder 9. When the sliding block 10 is not affected by high-pressure gas, the gas cylinder 9 is elastically supported by the first spring 15 and extends to a cylindrical shape. At the same time, the sliding block 10 is located at the bottom end of the pressure reduction channel 8 (corresponding to the circular plate 6). At this time, the mounting groove 11 is located above the sliding block 10 at the joint of the pressure reduction channel 8.

[0058] The first spring 15 can be made of, but is not limited to, stainless steel material and has a long service life.

[0059] A sound-absorbing sleeve 12 is arranged inside the mounting groove 11. The sound-absorbing sleeve 12 can be made of, but is not limited to, high-temperature-resistant elastic rubber material and is corrosion-resistant. The sound-absorbing sleeve 12 has a cavity in the wall body, and the wall thickness of the inner ring of the sound-absorbing sleeve 12 changes alternately between thick and thin. When the cavity inside the sound-absorbing sleeve 12 is inflated and expanded, the thin part deforms more obviously, and the thick part is not easy to deform due to the thick wall body. The wall thickness changes alternately between thick and thin, thereby forming a wavy structure at the inner ring of the sound-absorbing sleeve 12. After the gas is discharged, the inner ring surface of the sound-absorbing sleeve 12 is smooth.

[0060] When the gas passes through, the wave-shaped structure changes the movement track of the gas and completes the sound attenuation process by using the effect of collision; at the same time, the wave-shaped structure can absorb part of the impact energy, thereby reducing the impact force of the gas and achieving safe pressure relief.

[0061] In addition, since the wave-shaped structure is formed by inflating the sound attenuation sleeve 12, it has the characteristics of elastic deformation, and compared with directly arranging a hard corrugated pipe or the like structure, it can ensure the effect of reducing the impact force of the gas and sound attenuation.

[0062] To realize the communication between the air cylinder 9 and the sound attenuation sleeve 12, a pipe laying groove is reserved at the top end of the block 3, one end of the pipe laying groove is in communication with the top end of the pressure relief channel 8, the other end of the pipe laying groove is in communication with the mounting groove 11, and a conveying pipe 13 is arranged in the pipe laying groove, one end of the conveying pipe 13 is in communication with the top end of the air cylinder 9, the other end of the conveying pipe 13 is in communication with the inner cavity of the sound attenuation sleeve 12, and the conveying pipe 13 and the air cylinder 9 and the sound attenuation sleeve 12 are arranged in a detachable structure, which is convenient for replacing the air cylinder 9 and the sound attenuation sleeve 12.

[0063] When pressure relief, the pressure relief channel 8 is in communication with the pressure relief channel 5, the gas enters the pressure relief channel 8 from the pressure relief channel 5, acts on the sliding block 10 from bottom to top, and pushes the sliding block 10 to move upward in the pressure relief channel 8, the first spring 15 is contracted to unload and buffer, thereby reducing the impact force of the high-pressure gas on the block 3 and the like structure, especially in the initial stage of pressure relief.

[0064] At the same time, the air cylinder 9 is compressed, the gas in the air cylinder 9 enters the inner cavity of the sound attenuation sleeve 12 through the conveying pipe 13, so that a wave-shaped structure is formed at the inner ring of the sound attenuation sleeve 12, and the gas then passes through the sound attenuation sleeve 12 to reduce the pressure and noise by using the wave-shaped structure.

[0065] When the gas enters the inner cavity of the sound attenuation sleeve 12, the expansion of the sound attenuation sleeve 12 also provides a certain elastic support force for the sliding block 10, which cooperates with the first spring 15 to ensure the unloading and buffering effect.

[0066] After the pressure relief is completed, the reset elastic force of the first spring 15 makes the sliding block 10 reset downward, the air cylinder 9 returns to the original state, the gas in the inner cavity of the sound attenuation sleeve 12 flows back to the inside of the air cylinder 9 through the conveying pipe 13, and the inner ring surface of the sound attenuation sleeve 12 returns to a smooth state, avoiding long-term inflation and expansion, and prolonging the service life.

[0067] The inner ring surface of the sound attenuation sleeve 12 can be switched between the corrugated shape and the smooth shape, ensuring the use efficiency.

[0068] To realize the effect of flow guiding, the lower surface of the sliding block 10 is inclined, and the end close to the mounting groove 11 is inclined upward, which is convenient for the gas to quickly enter the sound attenuation sleeve 12.

[0069] Considering that the gas pressure will gradually decrease during the pressure relief process, if the gas pressure decreases, the sliding block 10 will slide downward, at this time, there is a case that the sliding block 10 is located in the middle section of the installation groove 11 and the pressure relief channel 8, that is, the gas may enter the position of the pressure relief channel 8 above the sliding block 10, in order to avoid this situation, an arc-shaped notch 18 is arranged at one end of the block 3 away from the axis of the circular plate 6, and the arc-shaped notch 18 is located in the upper half of the block 3; an inclined chute 19 in communication with the pressure relief channel 8 is arranged on the arc-shaped notch 18.

[0070] An extension slot 20 is arranged on one side of the sliding block 10 close to the arc-shaped notch 18, an extension rod 21 is slidably arranged in the extension slot 20, a second spring 22 is arranged in the extension slot 20, one end of the second spring 22 is fixedly connected to the extension rod 21, and the other end of the second spring 22 is fixedly connected to the inner wall of the extension slot 20.

[0071] The elastic support force of the second spring 22 is smaller than the elastic support force of the first spring 15, and a ball or the like structure (not shown in the figure) is arranged at one end of the extension rod 21 away from the second spring 22, so as to ensure the smoothness of movement.

[0072] When the sliding block 10 is located in the lower half of the pressure relief channel 8, the extension rod 21 is retracted into the extension slot 20 and presses the second spring 22 to contract, and one end of the extension rod 21 away from the second spring 22 abuts against the inner wall of the pressure relief channel 8, and after the sliding block 10 slides upward, when the extension rod 21 corresponds to the inclined chute 19, the reset elastic force of the second spring 22 makes the extension rod 21 pass through the inclined chute 19 and abut against the bottom end of the arc-shaped notch 18.

[0073] In order to limit the range of upward sliding of the sliding block 10 and prevent the case that the bottom end of the sliding block 10 is higher than the bottom end of the inclined chute 19 and the gas flows out from the inclined chute 19, a side plate 16 is fixedly connected to the top end of the sliding block 10, the side plate 16 is in an arc shape, the side plate 16 is attached to the inner wall of the pressure relief channel 8, and the side plate 16 is located on the side of the sliding block 10 close to the sound-absorbing sleeve 12, and the top end of the side plate 16 is provided with a containing groove 17 for containing the conveying pipe 13.

[0074] The area of the side plate 16 is appropriate, which can close the joint between the installation groove 11 and the pressure relief channel 8.

[0075] An arc plate 24 is arranged on the side of the block 3 and is fixedly connected to the inner wall of the control chamber 4, and the arc plate 24 abuts against the extension rod 21.

[0076] Specifically, when pressure relief, the sliding block 10 moves upward in the pressure relief channel 8, and when the top end of the side plate 16 abuts against the top end of the pressure relief channel 8, the position of the delivery pipe 13 close to the air cylinder 9 is located in the containing groove 17; at this time, the telescopic rod 21 corresponds to the bottom end of the slide 19, and is affected by the reset elastic force of the second spring 22, the telescopic rod 21 passes through the slide 19 and abuts against the bottom end of the arc-shaped notch 18, at this time, the sliding block 10 will neither move upward nor downward, which ensures the stability of use.

[0077] At the same time, the sliding block 10 separates the upper and lower halves of the pressure relief channel 8, so that the gas cannot enter the position above the sliding block 10, nor flow out from the slide 19.

[0078] After the pressure relief is completed, the square block 3 is rotated by the circular plate 6, and as shown in Figure 11 , the square block 3 is rotated in the clockwise direction, so that the pressure relief channel 8 is staggered with the pressure relief channel 5, at this time, the lower surface of the circular plate 6 closes the pressure relief channel 5; at the same time, the telescopic rod 21 is in contact with the arc plate 24 during rotation, and is pressed by the arc plate 24, so that the telescopic rod 21 is retracted into the telescopic groove 20, and after complete retraction, the telescopic rod 21 is just staggered with the bottom end of the arc-shaped notch 18 and the slide 19, and is affected by the reset elastic force of the first spring 15, at this time, the sliding block 10 can move downward and reset.

[0079] After the sliding block 10 moves downward and resets, the side plate 16 closes the abutment between the mounting groove 11 and the pressure relief channel 8.

[0080] By arranging the side plate 16, the telescopic rod 21 and other structures, the sliding block 10 is moved upward by using the gas flow as power, and at the same time, the abutment between the mounting groove 11 and the pressure relief channel 8 is always kept fully open during the pressure relief process, which ensures the pressure relief efficiency, and at the same time, the gas cannot flow randomly, and the wave-shaped structure can be kept in the state.

[0081] In addition, the rotation of the circular plate 6 realizes the locking and unlocking of the sliding block 10, which is convenient to control.

[0082] Considering that the gas needs to turn and change the flow direction when entering the sound attenuation sleeve 12 from the pressure relief channel 8, vortex and noise are easily generated, in order to alleviate the above-mentioned situation, the taper seat 14 is arranged at the bottom end of the sliding block 10, the bottom of the taper seat 14 is fixed with the blade 23, the blade 23 is arranged obliquely, and the blade 23 is arranged in multiple, and the multiple blades 23 are uniformly distributed around the axis of the taper seat 14.

[0083] When pressure relief, the cone seat 14 is located at the gas elbow, when the gas flows along the pressure relief channel 8 to the cone seat 14, it acts on the blade 23, so that the cone seat 14 rotates, through the guidance of the blade 23 and the rotation of the cone seat 14, the flow of the gas at the elbow is more orderly, the mutual collision and rotational motion between the gas molecules are reduced, the strength of the vortex is reduced, the impact of the gas on the slider 10, the inner wall of the pressure relief channel 8 and other positions is reduced, the gas impact force is dispersed, and the noise is reduced.

[0084] The blade 23 is S-shaped, so that the flow of the gas on the surface of the blade 23 is smoother, the separation phenomenon of the gas is reduced, and the generation of vortex is further reduced; and because the flow of the gas on the surface of the blade 23 is smoother, the disorderly motion of the gas and the generation of vortex are reduced, and the noise is further reduced.

[0085] And the blade 23 can also be provided as a sheet and other shapes, which is adjusted according to specific use conditions.

[0086] The application achieves the purpose of force unloading and buffering by setting the air cylinder 9, the sound-absorbing sleeve 12, the cone seat 14 and the first spring 15, reduces the impact force of high-pressure gas, and uses the switchable wave-shaped structure for pressure reduction and noise reduction, while controlling the vortex phenomenon of the gas at the elbow, thereby improving the use efficiency of the chemical reaction kettle safety pressure relief device.

[0087] The top of the mounting groove 11 is provided with a perforated plate 28, and the gas is subjected to pressure reduction and noise reduction by the wave-shaped structure of the sound-absorbing sleeve 12, and then subjected to pressure reduction and noise reduction by the perforated plate 28 again, and finally discharged from the top opening of the sealing cover 2.

[0088] In order to control the rotation of the circular plate 6, the block 3 and other structures, a rotating sleeve 25 is rotatably arranged at the top opening of the sealing cover 2, a connecting rod 29 is arranged between the rotating sleeve 25 and the block 3, the top end of the connecting rod 29 is fixed on the rotating sleeve 25, and the bottom end of the connecting rod 29 is fixed on the block 3 (refer to Figure 3 、 Figure 13 ), so as to realize the synchronous rotation of the rotating sleeve 25 and the block 3.

[0089] The outer wall of the rotating sleeve 25 is fixedly provided with a handle 26, and the top end of the rotating sleeve 25 is matched with a cover plate 27. The operator can hold the handle 26 to drive the rotating sleeve 25 to rotate, thereby driving the circular plate 6 and the block 3 to rotate, and controlling the pressure relief channel 8 to be staggered or correspondingly communicated with the pressure relief channel 5.

[0090] And the top of the sealing cover 2 is provided with a scale and the like (not shown in the figure), so as to facilitate the operator to accurately control the rotation angle of the circular plate 6 and the block 3, and a latch and the like can also be arranged between the sealing cover 2 and the rotating sleeve 25, so as to position the rotating sleeve 25 after rotation, preventing random rotation.

[0091] After the pressure relief is completed, the operator removes the sealing cover 2 again to ensure safety in use.

[0092] Working principle: when the reactants in the reaction kettle body 1 react, the decompression channel 8 and the pressure relief channel 5 are in a staggered state, at which time the reaction kettle body 1 is in a sealed state.

[0093] After the reaction of the reactants is completed, the cover plate 27 is removed, and the operator drives the rotating sleeve 25 to rotate by holding the handle 26, so that the decompression channel 8 and the pressure relief channel 5 correspondingly communicate, the gas enters the decompression channel 8 from the pressure relief channel 5, acts on the sliding block 10 from bottom to top, and pushes the sliding block 10 to move upward in the decompression channel 8, the first spring 15 is contracted to buffer the force, thereby reducing the impact force of the high-pressure gas on the block 3 and other structures, especially in the initial stage of pressure relief.

[0094] The air cylinder 9 is compressed, and the gas in the air cylinder 9 enters the internal cavity of the sound-absorbing sleeve 12 through the conveying pipe 13, so that a wave-shaped structure is formed at the inner ring of the sound-absorbing sleeve 12, and the gas then passes through the sound-absorbing sleeve 12 to reduce the pressure and noise by using the wave-shaped structure.

[0095] When the gas flows along the decompression channel 8 to the cone seat 14, it acts on the blade 23, causing the cone seat 14 to rotate. Through the guidance of the blade 23 and the rotation of the cone seat 14, the gas flow at the bend is more orderly, reducing the mutual collision and rotational motion between gas molecules, reducing the strength of the vortex, reducing the impact of the gas on the sliding block 10, the inner wall of the decompression channel 8, and other positions, dispersing the impact force of the gas, and reducing noise.

[0096] When the sliding block 10 moves upward in the decompression channel 8, the top end of the side plate 16 abuts against the top end of the decompression channel 8, and the position of the conveying pipe 13 close to the air cylinder 9 is located in the accommodating groove 17; at this time, the extension rod 21 corresponds to the bottom end of the slide 19, and is affected by the restoring force of the second spring 22, the extension rod 21 passes through the slide 19 and abuts against the bottom end of the arc-shaped notch 18, at this time the sliding block 10 neither moves upward nor downward, ensuring the stability of use.

[0097] At the same time, the sliding block 10 separates the upper and lower halves of the decompression channel 8, so that the gas cannot enter the position above the sliding block 10, nor flow out from the slide 19.

[0098] After the pressure relief is completed, the block 3 is rotated by the circular plate 6, as shown in Figure 11 , in the clockwise direction, so that the decompression channel 8 and the pressure relief channel 5 are staggered, at which time the lower surface of the circular plate 6 closes the pressure relief channel 5; at the same time, the extension rod 21 is in contact with the arc plate 24 during rotation, and is extruded by the arc plate 24, so that the extension rod 21 is retracted into the extension slot 20, and after complete retraction, it is just staggered with the arc-shaped notch 18 and the bottom end of the slide 19, and is affected by the restoring force of the first spring 15, at this time the sliding block 10 can move downward to reset.

[0099] The operator removes the closure cap 2 again.

Claims

1. A chemical reaction kettle safety pressure relief device, comprising a reaction kettle body (1) and a sealing cover (2) installed at the top end of the reaction kettle body (1), characterized in that: The sealing cover (2) is internally fixed with a partition layer (7), the partition layer (7) is provided with a pressure relief channel (5), and the sealing cover (2) is internally formed with a control chamber (4) above the partition layer (7); The control chamber (4) is internally rotatably provided with a circular plate (6) attached to the partition layer (7), the circular plate (6) is fixedly provided with a square block (3), the circular plate (6) is provided with a pressure relief channel (8) selectively communicated or staggered with the pressure relief channel (5), the pressure relief channel (8) extends to the inside of the square block (3), and a mounting groove (11) is formed in the lower half of the side wall of the pressure relief channel (8) and penetrates through the upper surface of the square block (3); The inside of the pressure relief channel (8) is slidably provided with a sliding block (10), a gas cylinder (9) is arranged between the sliding block (10) and the top of the pressure relief channel (8), the inside of the mounting groove (11) is mounted with a soundproof sleeve (12) communicated with the gas cylinder (9), and the inner ring surface of the soundproof sleeve (12) is switched between corrugated and smooth; The bottom end of the sliding block (10) is rotatably provided with a taper seat (14), and the bottom of the taper seat (14) is fixedly provided with a blade (23); The inside of the gas cylinder (9) is provided with a first spring (15), the top end of the first spring (15) abuts against the top of the gas cylinder (9), and the bottom end of the first spring (15) abuts against the bottom of the gas cylinder (9); The end of the square block (3) away from the axis of the circular plate (6) is provided with an arc-shaped notch (18), and the arc-shaped notch (18) is located in the upper half of the square block (3), the arc-shaped notch (18) is provided with a sliding channel (19) communicated with the pressure relief channel (8), the side of the sliding block (10) close to the arc-shaped notch (18) is provided with an expansion slot (20), the inside of the expansion slot (20) is slidably provided with an expansion rod (21), the inside of the expansion slot (20) is provided with a second spring (22), and after the sliding block (10) slides upward, the expansion rod (21) penetrates through the sliding channel (19) and abuts against the bottom end of the arc-shaped notch (18).

2. The safety pressure relief device for a chemical reaction vessel according to claim 1, characterized in that: The side of the square block (3) is provided with an arc plate (24), the arc plate (24) is fixedly connected to the inner wall of the control chamber (4), and the arc plate (24) is in abutting cooperation with the expansion rod (21).

3. The safety pressure relief device for a chemical reaction vessel according to claim 1, characterized in that: The top end of the sliding block (10) is fixedly connected with a side plate (16), the side plate (16) is arc-shaped, and the side plate (16) is attached to the inner wall of the pressure relief channel (8).

4. The safety pressure relief device for a chemical reaction vessel according to claim 1, characterized in that: The lower surface of the sliding block (10) is inclined, and the end close to the mounting groove (11) is upwardly inclined.

5. The safety pressure relief device for a chemical reaction vessel according to claim 1, characterized in that: The blade (23) is provided with a plurality of blades (23) uniformly distributed around the axis of the taper seat (14).

6. The safe pressure relief device for a chemical reaction vessel according to claim 1, characterized in that: The blade (23) is S-shaped.

7. The safe pressure relief device for a chemical reaction vessel according to claim 1, characterized in that: The mounting groove (11) is inclined, and the end away from the pressure relief channel (8) is upwardly inclined.

8. The safe pressure relief device of a chemical reaction vessel according to claim 1, characterized in that: The top end of the sealing cover (2) is open, and a rotating sleeve (25) is rotatably arranged at the opening, the square block (3) is fixedly connected to the rotating sleeve (25), and a handle (26) is fixedly mounted on the outer wall of the rotating sleeve (25).

Images