Cyclone dust removal device suitable for phosphorus pentasulfide feeding
By using a combination of an electric three-way ball valve and a pneumatic double gate valve in the cyclone dust collector, an inert gas protective environment is formed, which solves the problem of hydrolysis reaction during the feeding of phosphorus pentasulfide, and achieves safe equipment operation and environmental protection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2026-03-20
AI Technical Summary
In traditional cyclone dust collectors, the insufficient sealing performance of the ash hopper during the feeding of phosphorus pentasulfide leads to the reverse infiltration of humid air from the outside, causing phosphorus pentasulfide to react with moisture to generate corrosive gases, resulting in material loss and environmental pollution.
An electric three-way ball valve is used to regulate the positive pressure inside the cyclone dust collector, inert gas is introduced to isolate the hydrolysis reaction, and a double seal is formed by a pneumatic double gate valve. Combined with an anti-vibration device, the airtightness is ensured to prevent humid air from seeping in.
It effectively inhibits the reaction between phosphorus pentasulfide and moisture, reduces the generation of corrosive gases, lowers the risk of environmental pollution, extends equipment life, and meets the needs of continuous production.
Smart Images
Figure CN224010075U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of diphosphorus pentasulfide production, and particularly relates to a cyclone dust collector suitable for diphosphorus pentasulfide feeding. BACKGROUND
[0002] Diphosphorus pentasulfide can decompose into corrosive and irritating phosphoric acid and hydrogen sulfide gas when it comes into contact with water or humid air. Diphosphorus pentasulfide is a dusty material, and a small amount of the material may escape during feeding and react with humid air to generate dangerous gas.
[0003] When diphosphorus pentasulfide is fed, the escaped dust may harm the working environment and the health of workers. In the prior art, the escaped dust is usually sucked into a cyclone dust collector through a material guide pipe and separated by centrifugal force to remove dust, so that the diphosphorus pentasulfide dust can be collected to avoid waste.
[0004] However, the conventional cyclone dust collector only relies on negative pressure collection and gravity settling to collect diphosphorus pentasulfide. When the collected dust enters a dust hopper, if the dust hopper has insufficient sealing performance (the dust hopper may expand or contract due to temperature changes, the material may age, installation may be deviated, and maintenance may be insufficient), external humid air may penetrate in the reverse direction under the action of negative pressure. This may cause the collected diphosphorus pentasulfide to hydrolyze with moisture in the air to generate phosphoric acid and hydrogen sulfide gas, resulting in not only material loss but also equipment corrosion and environmental pollution. SUMMARY
[0005] Therefore, the utility model provides a cyclone dust collector suitable for diphosphorus pentasulfide feeding. The cyclone dust collector can form a positive pressure in the cyclone dust collector body by adjusting the electric three-way ball valve in cooperation with the main pipe, so that the diphosphorus pentasulfide dust can be easily discharged and recovered, secondary dusting can be inhibited, the diphosphorus pentasulfide can be prevented from hydrolyzing with moisture in the air, the safe operation of the equipment can be ensured, and the risk of environmental pollution can be reduced.
[0006] To solve the above technical problems, the utility model provides a cyclone dust collector suitable for diphosphorus pentasulfide feeding, which comprises a cyclone dust collector body. A material guide pipe is connected to the sidewall of a feeding port of the cyclone dust collector body, so that the gas containing diphosphorus pentasulfide that escapes during the feeding of diphosphorus pentasulfide can enter the barrel of the cyclone dust collector body through the material guide pipe. A main pipe is connected to the end of an exhaust pipe of the cyclone dust collector body through a flange. The main pipe is provided to guide the clean air flow to discharge and form a negative pressure in the cyclone dust collector body. Inert gas is introduced into the cyclone dust collector body through the main pipe when the material is discharged. The end of the exhaust pipe and the end of the main pipe are both arranged at the upper center of the cyclone dust collector body.
[0007] The main pipeline is connected with a three-way reversing valve at one end through a flange, the three-way reversing valve is an electric three-way ball valve, and is used for automatically and quickly switching to a working mode of dust removal, material discharge and inert gas filling.
[0008] The first interface of the electric three-way ball valve is connected with the main pipeline through a flange, the second interface of the electric three-way ball valve is connected with the air pipe through a flange, the air pipe is arranged to introduce inert gas into the main pipeline, one end of the air pipe is connected with a gas outlet of an inert gas storage tank through a flange, and the third interface of the electric three-way ball valve is connected with the exhaust pipe through a flange.
[0009] The exhaust pipe is connected with a one-way valve at the other end through a flange, the one-way valve is arranged to prevent humid air from flowing back into the cyclone dust collector body from the exhaust pipe and reacting with phosphorus pentasulfide.
[0010] The main pipeline is connected with an air extraction pipe, the air extraction pipe is connected with the main pipeline, and the air extraction pipe is connected with an air extraction port of an air induction fan through a flange.
[0011] The air induction fan is connected with a first support through bolts, and the electric three-way ball valve is connected with a second support through bolts, so that the air induction fan and the electric three-way ball valve can be installed on the upper surface of a wall body, the first support and the second support are located on the same plane, and the electric three-way ball valve and the air induction fan are supported on the ground, so that the main pipeline is prevented from being inclined.
[0012] The first support and the second support are provided with shockproof pads, so that bolts on the flanges are prevented from loosening due to vibration of the air induction fan or vibration of the exhaust pipe and the electric three-way ball valve, and the sealing performance of the whole is prevented from being affected.
[0013] The cyclone dust collector body is provided with a discharge valve and a dust hopper at the bottom, the discharge valve is a pneumatic double gate valve, the pneumatic double gate valve comprises an inlet gate and an outlet gate, a sealed chamber is formed between the inlet gate and the outlet gate, an air injection port is arranged on the side wall of the sealed chamber, the air injection port is connected with an air injection pipe through a screw thread, and the other end of the air injection pipe is connected with the air pipe in communication and is connected to the side wall of the air pipe through a screw thread.
[0014] The upper part of the dust hopper is connected with the lower part of the discharge valve through a flange, so that the dust hopper can be quickly disassembled for maintenance and cleaning.
[0015] A sealing element is arranged between the flanges for connecting the dust hopper and the discharge valve, so that humid air is prevented from entering the gap between the flanges, the sealing element is a silica gel sealing ring, and the elastic deformation of the silica gel sealing ring is used to compensate the installation gap of the flange surface.
[0016] The beneficial effects of the above technical scheme of the utility model are as follows:
[0017] 1. Inert gas isolation protection to prevent hydrolysis reaction: During discharge, the inert gas is introduced into the cyclone body through the main pipeline by adjusting the electric three-way ball valve, forming a positive pressure in the cyclone body during the discharge of phosphorus pentasulfide dust, which facilitates the discharge and recovery of phosphorus pentasulfide dust, and also inhibits secondary dust raising. The original air is squeezed out by the inert gas, avoiding the hydrolysis reaction of phosphorus pentasulfide with moisture in the air and reducing the generation of corrosive gases (such as hydrogen sulfide), thereby ensuring the safe operation of the equipment and reducing the risk of environmental pollution.
[0018] 2. Self-adaptive control: An electric three-way ball valve is used as the core control component to quickly switch between dust removal, discharge, and inert gas flushing modes. An automatic controller is used to realize automatic operation, reduce manual intervention, shorten the switching time, and adapt to the continuity requirements of phosphorus pentasulfide production.
[0019] 3. Secondary inert gas isolation protection: Inert gas is injected into the sealed chamber of the pneumatic double gate valve through the gas injection pipe, so that the phosphorus pentasulfide is discharged under the protection of inert gas, ensuring that the material is always in a sealed environment during transfer.
[0020] 4. Dust exposure prevention by double gate valve sealing during discharge: The discharge valve adopts a pneumatic double gate structure, with the inlet gate and outlet gate alternately opening and closing, and inert gas injection to form a double-sealed inert environment. This ensures that the phosphorus pentasulfide dust is always isolated from the air during transfer, preventing dust from escaping and cross-contamination, and reducing material loss.
[0021] 5. Anti-vibration to increase sealing and prolong equipment life: The induced draft fan and the electric three-way ball valve are installed through independent first and second supports, with anti-vibration pads at the bottom to effectively absorb the vibration during equipment operation, preventing the loosening of flange connection bolts. This ensures the sealing of the cyclone body, main pipeline, and hopper, reduces the risk of humid air infiltration due to vibration, and prolongs the equipment maintenance cycle.
[0022] 6. One-way valve to prevent backflow: The diaphragm type one-way valve at the end of the exhaust pipe prevents humid air from flowing back into the dust collector, further ensuring the stability of the internal inert environment and preventing the backflow of humid air into the cyclone body during dust removal, which would cause a hydrolysis reaction with the phosphorus pentasulfide dust. BRIEF DESCRIPTION OF DRAWINGS
[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0024] Figure 2 It is another schematic diagram of the overall structure of the utility model;
[0025] Figure 3 It is a schematic diagram of the local part structure of the utility model.
[0026] In the figure: 101, cyclone dust collector body; 102, main pipeline; 103, electric three-way ball valve; 104, air pipe;
[0027] 201, exhaust pipe; 202, one-way valve;
[0028] 301, air extraction pipe; 302, induced draft fan; 303, first support; 304, second support;
[0029] 401, discharge valve; 402, ash bucket;
[0030] 501, air injection pipe;
[0031] 601, material guide pipe. DETAILED DESCRIPTION
[0032] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model more clear, the following will combine the drawings of the embodiments of the utility model to make the purpose, technical scheme and advantages of the embodiments of the utility model more clear. Figures 1-3 The embodiments described are part of, rather than all, embodiments of the utility model. Based on the described embodiments of the utility model, all other embodiments obtained by those skilled in the art belong to the scope of protection of the utility model.
[0033] A cyclone dust removal device suitable for phosphorus pentasulfide feeding, as shown in the figure: Figure 1 、 2 The cyclone dust collector body 101 is connected with the feeding port side wall through the material guide pipe 601 at the feeding port, so that the gas containing phosphorus pentasulfide escaped during the phosphorus pentasulfide feeding process can enter the cylinder of the cyclone dust collector body 101 through the material guide pipe 601, the end of the exhaust pipe of the cyclone dust collector body 101 is connected with the main pipeline 102 through the flange, the main pipeline 102 is provided for guiding the clean gas flow to be discharged (when the dust-containing phosphorus pentasulfide rotates at high speed, the centrifugal force will throw the dust to the cylinder wall, and the clean gas flow in the middle region is discharged through the main pipeline 102 at the end of the exhaust pipe), and the inert gas is introduced into the cyclone dust collector body 101 through the main pipeline 102 during discharging, the inert gas is introduced to extrude the humid air, so as to avoid the humid air from flowing back into the cyclone dust collector body 101 to hydrolyze with the phosphorus pentasulfide, and the airflow barrier from top to bottom can inhibit the secondary raising of the dust.
[0034] The exhaust pipe of the cyclone dust collector body 101 and the end of the main pipe 102 are arranged at the upper center of the cyclone dust collector body 101, which can directly extract the clean gas flow in the central region, avoid mixing with the dust-containing gas flow in the periphery of the cyclone dust collector body 101, and vertically rise to the top center for discharge, with short path and small resistance, reducing energy loss.
[0035] As shown in Figure 1 , 3 The main pipe 102 is connected to a three-way reversing valve at one end through a flange, and the three-way reversing valve is an electric three-way ball valve 103, which is used for automatic and rapid switching of dust removal, discharge, and inert gas filling modes. The controller is used for control to realize full-automatic operation, reduce manual intervention, shorten process switching time, meet the needs of continuous production, and the electric ball valve includes a first interface, a second interface, and a third interface.
[0036] The first interface of the electric three-way ball valve 103 is connected to one end of the main pipe 102 through a flange, and the second joint of the electric three-way ball valve 103 is connected to the breather pipe 104 through a flange. The breather pipe 104 is arranged to introduce inert gas into the main pipe 102. The inert gas can use nitrogen, which can reduce the cost (can be prepared on a large scale by air separation, and the cost is much lower than other inert gases such as argon and helium), and the nitrogen molecule structure is stable and not easy to react with phosphorus pentasulfide. It can isolate oxygen and humid air.
[0037] One end of the breather pipe 104 is connected to the gas outlet of the inert gas storage tank through a flange. When it is necessary to introduce inert gas into the cyclone dust collector body 101, open the valve (generally use stop valve, ball valve) on the inert gas storage tank. When the inert gas is introduced into the cyclone dust collector body 101, it is used for adjusting or cutting off the gas flow. When the phosphorus pentasulfide dust falls into the ash bucket 402, in order to avoid the outside humid air entering the ash bucket 402 or flowing back into the cyclone dust collector body 101 during discharge, it is necessary to continuously introduce inert gas to isolate air and prevent phosphorus pentasulfide from hydrolysis. Therefore, a liquefied inert gas storage tank can be selected to ensure continuous construction period and high gas storage capacity.
[0038] The third interface of the electric three-way ball valve 103 is connected to the exhaust pipe 201 through a flange, and the exhaust pipe 201 is arranged to discharge clean gas flow during the dust removal process of the cyclone dust collector body 101.
[0039] As shown in Figure 2As shown: the exhaust pipe 201 end through the flange connected with one-way valve 202, one-way valve 202 can use diaphragm type one-way valve 202, fluoroplastic diaphragm on the one-way valve 202 corrosion resistance, dust jam, and can prevent air reflux into the cyclone dust collector body 101, to ensure the safety of phosphorus pentasulfide dust treatment, avoid dust when the humid air from the exhaust pipe 201 reflux into the cyclone dust collector body 101 and phosphorus pentasulfide dust hydrolysis reaction.
[0040] As shown in Figure 1 , 2 : the main pipeline 102 side wall connected with the exhaust pipe 301, the exhaust pipe 301 and the main pipeline 102 communication, the exhaust pipe 301 end through the flange and the exhaust fan 302 with the exhaust port connected, in the dust removal of phosphorus pentasulfide dust open induced draft fan 302, make the induced draft fan 302 through the exhaust when the cyclone dust collector body of the cylinder to form a negative pressure, the dust gas generated by the feeding port will be through the guide pipe 601 into the cyclone dust collector body 101 of the cylinder to carry on the dust removal, and the dust gas in the cyclone flow under the centrifugal action of separation, and capture in the cylinder wall, then through the inert gas into the cyclone dust collector body 101 will capture the phosphorus pentasulfide dust on the cylinder wall discharge.
[0041] As shown in Figure 2 , 3 : the lower part of the induced draft fan 302 through the bolt connected with the first support 303, the lower part of the electric three way ball valve 103 through the bolt connected with the second support 304, the first support 303 and the second support 304 are set to make the induced draft fan 302 and the electric three way ball valve 103 can be fixed on the ground or the wall surface, so that it can avoid displacement in the working process due to vibration, the first support 303 and the second support 304 bottom are located in the same plane, so that the electric three way ball valve 103 and the induced draft fan 302 are supported on the ground, which will not cause the main pipeline 102 to tilt, avoid affecting the rate of the exhaust pipe 201 when exhaust.
[0042] The first support 303 and the second support 304 bottom are provided with shockproof pad, the setting of shockproof pad can avoid the loosening of the bolt on the flange due to the vibration of the induced draft fan 302 or the vibration of the pipeline and the electric ball valve when exhaust, avoid affecting the sealing of the whole, and then can avoid the humid air into the cyclone dust collector body 101 and the hydrolysis reaction of phosphorus pentasulfide dust.
[0043] As shown in Figure 1 , 3As shown: the bottom of the cyclone body 101 is provided with a discharge valve 401 and an ash bucket 402, the discharge valve 401 is set as a pneumatic double gate valve, which is convenient to control and can avoid leakage, isolate humid air, and the pneumatic double gate valve realizes full-automatic control through the controller, the pneumatic double gate valve includes an inlet gate and an outlet gate, the inlet gate (close to the side of the cyclone) is used to cut off the communication between the discharge port of the cyclone body 101 and the ash bucket 402, to prevent the interference of phosphorus pentasulfide dust unloading on the negative pressure extraction process, and the outlet gate (far from the side of the cyclone) controls the opening and closing of the discharge port, and forms secondary sealing with the inlet gate, to ensure that humid air cannot enter from the discharge port of the cyclone body 101 before unloading.
[0044] When the inert gas is introduced into the barrel of the cyclone body 101, the opening of the pneumatic double gate valve and the amount of inert gas introduced can be controlled to control the unloading rate of phosphorus pentasulfide dust, to avoid dust dispersion or gas backflow during unloading.
[0045] A closed chamber is formed between the inlet gate and the outlet gate, a gas injection port is arranged on the side wall of the closed chamber, and the inert gas is injected into the closed chamber through the gas injection port, the gas injection port is connected with a gas injection pipe 501 through a screw, the other end of the gas injection pipe 501 is connected with the air pipe 104, and the air pipe 104 is connected with the side wall of the air pipe 104 through a screw, so that when the inert gas is introduced into the air pipe 104, the inert gas is injected into the closed chamber through the gas injection pipe 501, and the gas injection pipe 501 is arranged as a hose, which is convenient for position adjustment.
[0046] During feeding, the pneumatic double gate valve is controlled to open the inlet gate, and the phosphorus pentasulfide dust enters the closed chamber due to the positive pressure of the inert gas filled in the cyclone body 101 and the gravity of the phosphorus pentasulfide, at the same time, the inert gas is also filled into the closed chamber through the gas injection pipe 501, which ensures that the phosphorus pentasulfide dust does not contact with humid air when the phosphorus pentasulfide dust falls into the closed chamber (the inert gas needs to be filled slowly to avoid blowing up the phosphorus pentasulfide dust, and the diameter of the gas injection pipe 501 used does not need to be too large, which is selected according to the size of the starting double gate valve used).
[0047] After the phosphorus pentasulfide dust falls into the closed chamber (for example, if the amount of phosphorus pentasulfide is small, it will all fall into the closed chamber, and if the amount is large, it can be entered into the closed chamber in batches to further avoid the entry of external air into the cyclone during the discharging process), the inlet gate is closed and the outlet gate is opened, so that the material is discharged under the protection of the inert gas, and the inlet gate and the outlet gate are alternately opened and closed to ensure that the material is always in a closed environment during the transfer process, to avoid the contact of the phosphorus pentasulfide dust with water or oxygen, and to avoid dust dispersion and cross infection.
[0048] As Figure 1 , 3As shown: the upper part of the ash bucket 402 is connected with the lower part of the discharge valve 401 through a flange, facilitating quick disassembly of the ash bucket 402 when maintenance and cleaning are needed, and the ash bucket 402 can be quickly taken off for material collection.
[0049] A sealing element is arranged between the flanges for connecting the ash bucket 402 and the discharge valve 401, so as to avoid the entry of humid air from the gap between the two flanges when the flanges are connected.
[0050] The sealing element is a silica gel sealing ring, which can compensate the installation gap of the flange surface through elastic deformation, and can also absorb the deformation caused by vibration through elastic deformation.
[0051] In use, the feed inlet of the cyclone body 101 is connected with the sidewall of the feed port through the guide pipe 601, and the induced draft fan 302 is started during the feeding of phosphorus pentasulfide, so that the induced draft fan 302 draws the inside of the barrel of the cyclone body 101 into negative pressure through the suction pipe 301 and the main pipe 102, at this time, the escaped phosphorus pentasulfide dust enters the barrel through the feed inlet of the cyclone body 101, at this time, the phosphorus pentasulfide dust is separated from the airflow under the action of centrifugal force and is captured on the barrel wall (at this time, the electric three-way valve is adjusted to connect the main pipe 102 with the exhaust pipe 201).
[0052] After the capture is completed, the electric three-way valve is adjusted to connect the main pipe 102 with the air pipe 104, and the gas injection pipe 501 is connected at the gas injection port, the valve on the inert gas storage tank is opened, and the inert gas enters the barrel and the closed chamber through the air pipe 104 and the gas injection pipe 501 respectively, so that the barrel of the cyclone body 101 forms a positive pressure, at this time, the feed gate is opened, the captured phosphorus pentasulfide falls into the closed chamber due to the addition of inert gas and its own gravity, the feed gate is closed after entering the closed chamber, and the discharge gate is opened to discharge the phosphorus pentasulfide into the ash bucket 402 for collection, and the above-mentioned operation of the electric three-way valve can be repeated multiple times if too much collected phosphorus pentasulfide.
[0053] In addition, it should be noted that, in the description of the present application, unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above-mentioned terms in the present application can be understood according to the specific circumstances.
[0054] The above is the preferred embodiment of the present application, it should be pointed out that, for those skilled in the ordinary in the art, without departing from the principles described in the present application, can be made several improvements and refinements, these improvements and refinements should also be considered as the scope of protection of the present application.
Claims
1. A cyclone dust collector suitable for feeding phosphorus pentasulfide, comprising a cyclone dust collector body (101), characterized in that: The exhaust pipe end of the cyclone dust collector body (101) is provided with a main pipe (102) to guide the clean airflow to be discharged so that a negative pressure is formed inside the cyclone dust collector body (101), and inert gas is introduced into the cyclone dust collector body (101) through the main pipe (102) when the material is discharged. A three-way reversing valve is provided at one end of the main pipeline (102), and a vent pipe (104) is connected to one of the interfaces of the three-way reversing valve for introducing inert gas into the main pipeline (102). One end of the vent pipe (104) is connected to the outlet of the inert gas storage tank.
2. The cyclone dust collector for feeding phosphorus pentasulfide as described in claim 1, characterized in that: The three-way reversing valve is configured as an electric three-way ball valve (103), which includes a first interface, a second interface and a third interface; The main pipe (102) is connected to the first interface of the electric three-way ball valve (103), the vent pipe (104) is connected to the second interface, and the third interface is connected to the exhaust pipe (201). The exhaust pipe (201) is equipped with a one-way valve (202) at the end to prevent humid air from entering when the material is discharged.
3. The cyclone dust collector for feeding phosphorus pentasulfide as described in claim 2, characterized in that: The main pipe (102) is connected to a suction pipe (301) on its side wall. The suction pipe (301) is connected to the main pipe (102). A blower (302) is installed at the end of the suction pipe (301). The lower part of the induced draft fan (302) is provided with a first bracket (303), and the lower part of the electric three-way ball valve (103) is provided with a second bracket (304). The bottoms of the first bracket (303) and the second bracket (304) are located on the same plane.
4. The cyclone dust collector for feeding phosphorus pentasulfide as described in claim 3, characterized in that: The bottom of the first bracket (303) and the second bracket (304) are provided with shock-absorbing pads to prevent vibration from affecting the sealing performance.
5. The cyclone dust collector for feeding phosphorus pentasulfide as described in claim 1, characterized in that: The bottom of the cyclone dust collector body (101) is provided with a discharge valve (401) and a dust hopper (402), characterized in that: the discharge valve (401) is a pneumatic double gate valve, the pneumatic double gate valve includes a feed gate and a discharge gate, and a sealed chamber is formed between the feed gate and the discharge gate; An air injection port is provided on the side wall of the sealed chamber, and an air injection pipe (501) is provided on the air injection port. The other end of the air injection pipe (501) is connected to the ventilation pipe (104).
6. The cyclone dust collector for feeding phosphorus pentasulfide as described in claim 5, characterized in that: The upper part of the ash hopper (402) is connected to the lower part of the unloading valve (401) via a flange, which facilitates quick disassembly and assembly of the ash hopper (402) during maintenance and cleaning.
7. The cyclone dust collector for feeding phosphorus pentasulfide as described in claim 6, characterized in that: A sealing element is provided between the flange used to connect the ash hopper (402) and the unloading valve (401) to prevent humid air from entering through the gap between the flanges.
8. The cyclone dust collector for feeding phosphorus pentasulfide as described in claim 7, characterized in that: The sealing element is a silicone sealing ring, used to compensate for the installation gap of the flange face.