Waste gas filtering device for silica gel production

Abstract

The present invention provides a silica gel production waste gas filtration apparatus, and relates to the technical field of waste gas filtration, the silica gel production waste gas filtration apparatus comprises a filtration cylinder and a centrifugal water supply pump, a water inlet pipe is welded to the center position of a circular side wall of a centrifugal water supply pump shell, a rotary filtration mechanism is arranged on the water inlet pipe, and a circle of metal filtration screen is arranged on the periphery of the rotary filtration mechanism; the rotary filtering mechanism is used for removing blocking impurities on the metal filter screen by utilizing centrifugal force; a first impeller is rotationally arranged in the centrifugal water supply pump shell and is in transmission connection with the rotary filtering mechanism. The internal water level of the filter cartridge is higher than the water inlet pipe but lower than the top opening of the water separation tank, and the height of the water separation tank is twice of the radius of the rotary filter mechanism. The blockage impurities can be prevented from being intercepted and blocked by water and cannot be thrown away from the metal filter screen or are difficult to throw away from the metal filter screen, so that the blockage impurities can be thrown away and cleaned thoroughly without obstacles, and the centrifugal blockage cleaning effect of the rotary filtering mechanism is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of waste gas filtration, and particularly to a waste gas filtration device for silicone production. Background Art

[0002] A waste gas filtration device for silicone production is specifically designed to treat the waste gas generated during the silicone production process to reduce the emission of harmful substances and protect the environment. Such a device usually includes multiple filtration and purification steps to ensure the effective removal of pollutants in the waste gas.

[0003] On the water inlet pipe of the centrifugal water supply pump of the existing spray-type waste gas filtration device, a filtration mechanism is mostly configured. And to facilitate the use of centrifugal force to eject and clean the impurities blocked on the metal filter screen of the filtration mechanism, the filtration mechanism is mostly set in a form that can rotate at high speed. However, most of such rotating filtration mechanisms are completely immersed in water. This causes that when the rotating filtration mechanism rotates at high speed to perform centrifugal blockage cleaning on the metal filter screen, the impurities blocked on the metal filter screen will be intercepted by the resistance of water, resulting in the fact that it is very difficult or impossible for the impurities to be thrown off from the metal filter screen, affecting the blockage cleaning effect of the metal filter screen.

[0004] Such as Figure 10 As shown, although some rotating filtration mechanisms directly expose the metal filter screen at the top part out of the water surface, which can avoid the resistance of water and solve the above problems, but this design form requires the water level to be accurately maintained within a small height range between the water inlet pipe of the centrifugal water supply pump and the top part of the rotating filtration mechanism. The accurate maintenance of the water level requires an automated water level control system with high precision and high procurement cost, which will increase the cost of the filtration device and reduce the cost performance of the filtration device.

[0005] The reason for accurately controlling and maintaining the water level within the above small height range is that the water level needs to be higher than the water inlet pipe to ensure full-load water inlet of the water inlet pipe, and the water level needs to be lower than the top part of the rotating filtration mechanism to ensure that the metal filter screen at the top is exposed out of the water surface to avoid the resistance of water. Summary of the Invention

[0006] In view of this, the present invention provides a waste gas filtration device for silicone production to solve the problems that the filtration device needs to be equipped with an automated water level control system with high precision and high procurement cost, and has a high cost and a low cost performance.

[0007] The technical solution proposed by the present invention is: a waste gas filtration device for silicone production, specifically including: a filter cylinder and a centrifugal water supply pump. The centrifugal water supply pump is fixedly arranged at the inner bottom of the filter cylinder, and water for filtering and treating waste gas is filled at the inner bottom of the filter cylinder.

[0008] A water barrier is fixedly arranged inside the filter cartridge at a position above the centrifugal water supply pump, and the water barrier is a structure with an open top and a closed bottom; a water inlet pipe is welded at the center of a circular side wall of the pump housing of the centrifugal water supply pump, and a rotating filter mechanism is arranged on the water inlet pipe, and a circle of metal filter is arranged on the periphery of the rotating filter mechanism, and the rotating filter mechanism uses centrifugal force to clear the blocked impurities on the metal filter;

[0009] The first impeller is rotatably arranged inside the pump housing of the centrifugal water supply pump, and the first impeller is transmission-connected with the rotary filter mechanism; the internal water level of the filter cartridge is higher than the water inlet pipe but lower than the top opening of the water barrier, and the height of the water barrier is twice the radius of the rotary filter mechanism;

[0010] The outer peripheral top of the rotating filtering mechanism and the metal filter located on this part penetrate the bottom plate of the watertight box and protrude into the watertight box; two sets of pumping and drainage mechanisms driven by the first impeller to suck and drain the water inside the watertight box are symmetrically arranged at the bottom of the watertight box.

[0011] Furthermore, the rotary filtering mechanism includes a disc, a connecting short shaft and a metal filter screen. The disc is arranged at two intervals. A circle of connecting short shafts is welded between the outer edges of the two discs. A circle of water troughs is formed between the connecting short shafts. The metal filter screen corresponds to the water trough one by one and is installed and covered on the water trough:

[0012] The top of the outer periphery of the rotary filtering mechanism is the top of two discs.

[0013] Furthermore, a circular groove is formed through the center of the disc of the centrifugal water supply pump, and the circular groove is rotatably matched with the opening of the first end of the water inlet pipe;

[0014] The central rotating shaft of the first impeller passes through the water inlet pipe and the head end is fixedly connected to the center position of another disc.

[0015] Furthermore, a conical gear ring is fixedly installed at the outer center position of the disk away from the water inlet pipe.

[0016] Furthermore, the pumping mechanism comprises: an L-shaped water suction pipe, a water suction hood and a rotary suction assembly, the two L-shaped water suction pipes in the two sets of pumping mechanisms are symmetrically welded to the bottom plate of the water barrier box, and the head ends of the two L-shaped water suction pipes are welded with water suction hoods with increased diameters;

[0017] The rotary suction assembly includes: a second impeller, a wheel shaft and a bevel gear, the wheel shaft is rotatably installed in the horizontal pipe section of the L-shaped water suction pipe, the wheel shaft passes through the bent part of the L-shaped water suction pipe, one end of the wheel shaft protruding from the L-shaped water suction pipe is fixedly sleeved with a bevel gear, and the other end is fixedly sleeved with a second impeller;

[0018] The second impellers on the two sets of rotary suction components are arranged separately in the two water suction covers, and the two bevel gears on the two sets of rotary suction components are symmetrically meshed with the bevel gear ring for transmission.

[0019] Further, a submersible motor is fixedly suspended at a long side position of the bottom plate of the separation water tank, and the head end of the drive shaft of the submersible motor is fixedly connected to the part of the disc inside the bevel gear ring.

[0020] Further, three water distribution rings are welded at equal intervals up and down on the inner side of the barrel wall of the filter cylinder. A circle of spray nozzles is fixedly installed on the inner ring of the three water distribution rings by means of screwing. The three water distribution rings are located above the separation water tank;

[0021] A water supply pipe fitting is fixedly arranged on the outer side of the barrel wall of the filter cylinder. The water supply pipe fitting is jointly composed of a vertical conduit, three L-shaped elbows welded at equal intervals on the upper half of the vertical conduit, and an L-shaped elbow welded at the bottom end of the vertical conduit. The head end parts of the three upper L-shaped elbows are welded through the barrel wall of the filter cylinder and are respectively welded and communicated with the three water distribution rings. The vertical pipe section of the bottom L-shaped elbow is welded through the barrel wall of the filter cylinder and is connected and conducted with the L-shaped water outlet pipe.

[0022] Further, two vertical support plates are welded at intervals up and down between the barrel wall of the separation water tank and the filter cylinder. The separation water tank is fixed in the filter cylinder through the two vertical support plates.

[0023] Further, a conical air gathering cover is fixedly installed on the top opening of the filter cylinder, and an exhaust pipe is welded at the center position of the top of the conical air gathering cover;

[0024] The bottom of the filter cylinder is in a conical cover structure, and an impurity discharge pipe is welded at the center position of the bottom of the conical cover structure. The lower half of the barrel wall of the filter cylinder is welded with an air inlet pipe and a water replenishing pipe with a valve at intervals up and down.

[0025] A support base is welded downward on the outer periphery of the conical cover structure.

[0026] An exhaust gas filtering device for silicone production provided by the present invention has the following beneficial effects:

[0027] First, the inside of the separation water tank is empty and can separate the water inside the filter cylinder from the metal filter screen at the outer periphery top of the rotary filtering mechanism, so that the metal filter screen at the top protrudes and is exposed in the empty space inside the separation water tank to perform rotary centrifugal cleaning on the blocked impurities thereon. Compared with the prior art in which the rotary filtering mechanism is completely immersed in water, it can avoid the blocked impurities being intercepted and blocked by water and being unable or difficult to be thrown off from the metal filter screen, so that the blocked impurities can be thrown off and cleaned without obstruction and more thoroughly, which helps to further improve the centrifugal clogging removal effect of the rotary filtering mechanism.

[0028] 2. The first impeller is drivingly connected to the rotary filtering mechanism through a central rotating shaft, which enables the first impeller to be driven by the rotational driving force of the rotary filtering mechanism, eliminating the need for an additional driving motor for the centrifugal water supply pump and helping to reduce the cost and energy consumption of the filtering device.

[0029] 3. Since the height of the partition water tank is twice the radius of the rotary filtering mechanism, and the control range of the water level height between the water inlet pipe and the top of the rotary filtering mechanism in the prior art is less than the radius of the rotary filtering mechanism, the control range of the water level height formed between the top opening of the partition water tank and the water inlet pipe in the present invention is at least three times that of the prior art. This effectively expands the control range and accuracy of the water level height in the present invention compared to the prior art, enabling the present invention to use an automated water level control system with a lower price and lower control accuracy to meet the control and maintenance of the water level, helping to further reduce the cost of the filtering device and improve the cost performance of the filtering device.

[0030] 4. Through two second impellers, two rotary suction components can use two L-shaped suction pipes to suck and drain the water entering the partition water tank through the top metal filter screen, ensuring that the inside of the partition water tank is empty and ensuring the normal and effective implementation of the centrifugal clogging cleaning function of the rotary filtering mechanism inside the partition water tank in a waterless state. Through the meshing transmission of the conical gear ring and two conical gears, two rotary suction components can be driven by the rotational driving force of the rotary filtering mechanism, eliminating the need for an additional driving motor for the two rotary suction components and helping to further reduce the cost of the filtering device and improve the energy efficiency ratio of the filtering device.

[0031] 5. The height of the partition water tank in the present invention is set to be twice the radius of the rotary filtering mechanism, which is moderate. This can ensure the effect of blocking and separating water while ensuring the effect of discharging the thrown impurities, and has better practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] 14. To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly introduced below.

[0033] 17. The accompanying drawings in the following description only relate to some embodiments of the present invention and do not limit the present invention.

[0034] Figure 1 21. shows the overall structural schematic diagram of the present invention;

[0035] Figure 2 25. shows the semi-sectional internal structural schematic diagram of the filter cartridge in the present invention;

[0036] Figure 3 29. shows the structural schematic diagram of the water distribution ring and the partition water tank in the present invention;

[0037] Figure 4Shows the schematic structural diagram of the centrifugal water supply pump in the present invention;

[0038] Figure 5 Shows the schematic installation position diagram of the submersible motor and the rotary filtering mechanism in the present invention;

[0039] Figure 6 Shows the schematic semi-sectional internal structure diagram of the partition water tank in the present invention;

[0040] Figure 7 Shows the schematic semi-sectional internal structure diagram of the L-shaped water suction pipe and the water suction hood in the present invention;

[0041] Figure 8 Shows the schematic semi-sectional internal structure diagram of the rotary filtering mechanism and the centrifugal water supply pump in the present invention;

[0042] Figure 9 Shows the schematic structural diagram of the rotary filtering mechanism and the first impeller in the present invention.

[0043] List of reference numerals:

[0044] 1, filter cylinder; 101, exhaust pipe; 102, impurity discharge pipe; 103, intake pipe; 104, make-up water pipe; 105, support base;

[0045] 2, water supply pipe fitting;

[0046] 3, water distribution ring; 301, spray head;

[0047] 4, partition water tank; 401, L-shaped water suction pipe; 402, water suction hood;

[0048] 5, centrifugal water supply pump; 501, intake pipe; 502, L-shaped outlet pipe; 503, first impeller; 5031, central rotating shaft;

[0049] 6, submersible motor;

[0050] 7, rotary suction assembly; 701, second impeller; 702, wheel shaft; 703, bevel gear;

[0051] 8, rotary filtering mechanism; 801, disc; 802, connecting short shaft; 803, metal filter screen; 804, bevel gear ring.

[0052] In order to more clearly illustrate the technical problems to be solved by the present invention, the accompanying drawings of the prior art will be briefly introduced below.

[0053] Figure 10 Shows the schematic installation position diagram of the rotary filtering mechanism in the prior art.

[0054] List of reference numerals:

[0055] 1. Filter cartridge;

[0056] 8. Rotary filtration mechanism; 803. Metal filter screen;

[0057] 5. Centrifugal water supply pump; 501. Water inlet pipe. Specific implementation manner

[0058] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present invention.

[0059] Please refer to Figures 1 to 10 ;

[0060] Example 1:

[0061] The present invention provides an exhaust gas filtration device for silicone production, comprising: a filter cartridge 1 and a centrifugal water supply pump 5. The centrifugal water supply pump 5 is fixedly arranged at the inner bottom of the filter cartridge 1, and water for filtering exhaust gas is filled at the inner bottom of the filter cartridge 1;

[0062] A water separation tank 4 is fixedly arranged above the centrifugal water supply pump 5 inside the filter cartridge 1. The water separation tank 4 has a structure with an open top and a closed bottom; A water inlet pipe 501 is welded at the center position of a circular side wall of the pump casing of the centrifugal water supply pump 5. A rotary filtration mechanism 8 is arranged on the water inlet pipe 501. A metal filter screen 803 is arranged around the outer periphery of the rotary filtration mechanism 8. The rotary filtration mechanism 8 uses centrifugal force to clean the blocked impurities on the metal filter screen 803;

[0063] When the rotary filtration mechanism 8 rotates at a high speed, a large centrifugal force can be generated. This large centrifugal force can continuously throw off and clean the blocked impurities on the metal filter screen 803 during the operation of the filtration device. This can save the trouble of frequently stopping the machine to open the filtration device and manually cleaning the metal filter screen 803 inside the filtration device, helping to reduce the workload of workers, reducing the occupation of the normal operation time of the filtration device, indirectly improving the operation efficiency of exhaust gas filtration. Moreover, the metal filter screen 803 is arranged around the outer periphery of the rotary filtration mechanism 8 perpendicular to the direction of the above centrifugal force, so that the blocked impurities on the metal filter screen 803 are distributed in the throwing direction of the centrifugal force, enabling the full and non-destructive use of the centrifugal force to implement thorough and effective throwing and cleaning, which helps to improve the cleaning effect of the rotary filtration mechanism 8 on the metal filter screen 803;

[0064] Inside the pump housing of the centrifugal water supply pump 5, a first impeller 503 is rotatably arranged, and the first impeller 503 is in driving connection with the rotary filtering mechanism 8; the water level inside the filter cylinder 1 is higher than the water inlet pipe 501 but lower than the top opening of the separation water tank 4, and the height of the separation water tank 4 is twice the radius of the rotary filtering mechanism 8;

[0065] Most of the blocked impurities thrown off from the metal filter screen 803 are directly thrown out from the top opening of the separation water tank 4, and the remaining part is intercepted and accumulated in the separation water tank 4;

[0066] The outer peripheral top of the rotary filtering mechanism 8 and the metal filter screen 803 located on this part penetrate through the bottom plate of the separation water tank 4 and protrude into the separation water tank 4; two sets of pumping and discharging mechanisms are symmetrically arranged at the bottom of the separation water tank 4, which are driven by the first impeller 503 to suck and empty the water entering the inside of the separation water tank 4;

[0067] The inside of the separation water tank 4 is empty and can separate the water inside the filter cylinder 1 from the metal filter screen 803 at the outer peripheral top of the rotary filtering mechanism 8, so that the metal filter screen 803 at the top protrudes and is exposed to the empty space inside the separation water tank 4 to perform rotary centrifugal cleaning on the blocked impurities thereon. Compared with the prior art in which the rotary filtering mechanism 8 is completely immersed in water, it can prevent the blocked impurities from being intercepted and blocked by water and being unable or difficult to be thrown off from the metal filter screen 803, so that the blocked impurities can be thrown off and cleaned without obstacles and more thoroughly, which helps to further improve the centrifugal clogging cleaning effect of the rotary filtering mechanism 8.

[0068] Preferably, the rotary filtering mechanism 8 includes a disc 801, a connecting short shaft 802 and a metal filter screen 803. The discs 801 are arranged at two intervals, and a circle of connecting short shafts 802 is welded between the outer eaves of the two discs 801. A circle of water passing grooves are formed at intervals between the connecting short shafts 802. The metal filter screen 803 corresponds to the water passing grooves one by one and is installed and covered on the water passing grooves; the outer peripheral top of the rotary filtering mechanism 8 is the top of the two discs 801.

[0069] Preferably, a circular groove is formed through the center position of the disc 801 facing the centrifugal water supply pump 5, and the circular groove is in rotational fit with the first opening part of the water inlet pipe 501; the central rotating shaft 5031 of the first impeller 503 penetrates through the water inlet pipe 501 and the first end is fixedly connected with the center position of the other disc 801;

[0070] The first impeller 503 is in driving connection with the rotary filtering mechanism 8 through the central rotating shaft 5031, which enables the first impeller 503 to be driven by the rotational driving force of the rotary filtering mechanism 8, and it is possible to save the additional driving motor configured for the centrifugal water supply pump 5, which helps to reduce the cost and energy consumption of the filtering device;

[0071] In the prior art where the top of the rotary filtering mechanism 8 and the metal filter screen 803 provided on this part protrude directly above the water surface, and centrifugal clog cleaning is performed on the metal filter screen 803 exposed above the water surface by avoiding the interception resistance of water to the clogged impurities on the metal filter screen 803, it is necessary to accurately control and maintain the water level in the filter cylinder 1 within a relatively small height range between the water inlet pipe 501 and the top of the filtering mechanism 8 (for the reason, please refer to the background art and Figure 10 ).

[0072] An automatic water level control system is provided on the filtering device, and the automatic water level control system is used to control the internal water level of the filter cylinder 1; in the present invention, the internal water level of the filter cylinder 1 needs to be higher than the water inlet pipe 501 to ensure full-load water inlet of the water inlet pipe 501, and the internal water level of the filter cylinder 1 needs to be lower than the top opening of the partition water tank 4 to prevent water from pouring into the interior of the partition water tank 4 through the top opening of the partition water tank 4 and affecting the normal and effective implementation of the water-free obstruction centrifugal cleaning function of the rotary filtering mechanism 8 in the internal space of the partition water tank 4. Therefore, it is necessary to control the internal water level of the filter cylinder 1 within a height range higher than the water inlet pipe 501 but lower than the top opening of the partition water tank 4. Since the height of the partition water tank 4 is twice the radius of the rotary filtering mechanism 8, and in the prior art, the control range of the water level height between the water inlet pipe 501a and the top of the filtering mechanism 8a is less than the radius of the rotary filtering mechanism 8. Furthermore, in the present invention, the height control range of the water level formed between the top opening of the partition water tank 4 and the water inlet pipe 501 is at least three times that of the water level height control range in the prior art. This enables the present invention to effectively expand the control range and accuracy of the water level height compared with the prior art, allowing the present invention to use an automatic water level control system with a lower price and lower control accuracy to meet the control and maintenance of the water level, which helps to further reduce the cost of the filtering device and improve the cost performance of the filtering device;

[0073] Theoretically, the higher the partition water tank 4, the larger the water level height control range extended by its enclosure and water isolation effect. However, as the height of the partition water tank 4 increases, its interception effect on the impurities thrown out from the metal filter screen 803 becomes more significant. Furthermore, the higher the partition water tank 4, the more thrown-out impurities it will intercept and accumulate therein, and the more times of cleaning its body will increase. The present invention sets the height of the partition water tank 4 to be twice the radius of the rotary filtering mechanism 8, which is of moderate height, enabling the partition water tank 4 to ensure the enclosure and water isolation effect while ensuring the throwing and discharging effect of the thrown-out impurities, and having better practicability.

[0074] Preferably, a conical gear ring 804 is fixedly installed at the outer center position of the disc 801 away from the water inlet pipe 501.

[0075] Preferably, the pumping and draining mechanism includes an L-shaped water suction pipe 401, a water suction hood 402, and a rotary pumping assembly 7. The two L-shaped water suction pipes 401 in the two sets of pumping and draining mechanisms are symmetrically welded to the bottom plate of the separation water tank 4, and water suction hoods 402 with an increased diameter are welded to the first ends of the two L-shaped water suction pipes 401. The rotary pumping assembly 7 includes a second impeller 701, a wheel shaft 702, and a bevel gear 703. The wheel shaft 702 is rotatably installed in the horizontal pipe section of the L-shaped water suction pipe 401. The wheel shaft 702 penetrates through the bent part of the L-shaped water suction pipe 401. A bevel gear 703 is fixedly sleeved on one end of the wheel shaft 702 protruding from the L-shaped water suction pipe 401, and a second impeller 701 is fixedly sleeved on the other end. The second impellers 701 on the two sets of rotary pumping assemblies 7 are respectively arranged in the two water suction hoods 402, and the two bevel gears 703 on the two sets of rotary pumping assemblies 7 are symmetrically engaged and driven with a bevel gear ring 804.

[0076] Through the two second impellers 701, the two rotary pumping assemblies 7 can use the two L-shaped water suction pipes 401 to pump and drain the water entering the separation water tank 4 through the top metal filter screen 803, so as to ensure that the inside of the separation water tank 4 is empty, and ensure that the centrifugal clogging removal function implemented by the rotary filtering mechanism 8 inside the separation water tank 4 in a waterless state is effectively implemented. Through the meshing drive of the bevel gear ring 804 and the two bevel gears 703, the two rotary pumping assemblies 7 can be driven by the rotary driving force of the rotary filtering mechanism 8, which can save the additional configuration of driving motors for the two rotary pumping assemblies 7, help to further reduce the cost of the filtering device, and improve the energy efficiency ratio of the filtering device.

[0077] It should be noted that: due to the interception effect of the separation water tank 4 on the thrown-out impurities, it is necessary to clean the thrown-out impurities intercepted and accumulated in the separation water tank 4 at regular intervals. When cleaning the impurities, the filter cylinder 1 is replenished with water so that the water submerges the top opening of the separation water tank 4 and enters the separation water tank 4. When the water enters the separation water tank 4, the impurities inside the separation water tank 4 can be flushed and floated up. At this time, along with the rotary pumping of the two rotary pumping assemblies 7, the floated impurities are pumped out of the separation water tank 4 to complete the cleaning. This cleaning operation method does not require the filtering device to be shut down, only needs to replenish the filter cylinder 1 with excessive water, does not occupy the operation time of the filtering device, and can save the trouble of disassembling the filtering device and entering the inside of the filtering device to clean the separation water tank 4 regularly, and the operation is simple and time-saving.

[0078] Preferably, a submersible motor 6 is fixedly suspended at a long side position of the bottom plate of the separation water tank 4, and the first end of the drive shaft of the submersible motor 6 is fixedly connected to the part of the disc 801 located inside the bevel gear ring 804.

[0079] The submersible motor 6 is used to drive the rotary filtering mechanism 8 to rotate at a high speed.

[0080] Preferably, three water distribution rings 3 are welded at equal intervals up and down on the inner side of the barrel wall of the filter cartridge 1. A circle of nozzles 301 is fixedly installed on the inner rings of the three water distribution rings 3 in a threaded manner. The three water distribution rings 3 are located above the separation water tank 4.

[0081] A water supply pipe fitting 2 is fixedly arranged on the outer side of the barrel wall of the filter cartridge 1. The water supply pipe fitting 2 is jointly composed of a vertical conduit, three L-shaped elbows welded at equal intervals on the upper half of the vertical conduit, and an L-shaped elbow welded at the bottom end of the vertical conduit. The first ends of the three upper L-shaped elbows penetrate and are welded to the barrel wall of the filter cartridge 1 and are respectively welded and communicated with the three water distribution rings 3. The vertical pipe section of the bottom L-shaped elbow penetrates and is welded to the barrel wall of the filter cartridge 1 and is connected and conducted with the L-shaped water outlet pipe 502.

[0082] On the basis of Embodiment 1, Embodiment 2:

[0083] Two vertical support plates are welded at intervals up and down between the separation water tank 4 and the barrel wall of the filter cartridge 1. The separation water tank 4 is fixed in the filter cartridge 1 through the two vertical support plates.

[0084] A conical air gathering hood is fixedly installed on the top opening of the filter cartridge 1. An exhaust pipe 101 is welded at the center position of the top of the conical air gathering hood; the bottom of the filter cartridge 1 is in a conical hood structure, and an impurity discharge pipe 102 is welded at the center position of the bottom of the conical hood structure. The lower half of the barrel wall of the filter cartridge 1 is welded with an air inlet pipe 103 and a water replenishing pipe 104 with a solenoid valve at intervals up and down.

[0085] A support base 105 is welded downward on the outer periphery of the conical hood structure.

[0086] The automatic water level control system includes: a water level controller, a water level sensor, and a solenoid valve on the water replenishing pipe 104. The model specifications, installation, wiring methods, and control principles of the water level controller, the water level sensor, and the solenoid valve on the water replenishing pipe 104 are prior art for those in the field of equipment electrification transformation, design, and maintenance, so they will not be elaborated here;

[0087] It should be noted that: when cleaning the separation water tank 4, it is necessary to close the automatic water level control system and manually open the solenoid valve on the water replenishing pipe 104 to overfill the filter cartridge 1 with water.

[0088] Working principle: The water replenishing pipe 104 is connected to an external water supply source, the air inlet pipe 103 is connected to an external waste gas source, and the centrifugal water supply pump 5 pressurizes and conveys the water at the bottom inside the filter cartridge 1 to the three water distribution rings 3 through the water supply pipe fitting 2. The three water distribution rings 3 respectively distribute the water pumped into their interiors to the three circles of nozzles 301, and the water is formed into water mist through the spraying and atomizing effect of the three circles of nozzles 301;

[0089] The waste gas generated during the production process of silica gel enters the filter cartridge 1 through the inlet pipe 103 and climbs upward through the three water distribution rings 3. When the waste gas passes through the three water distribution rings 3, it meets the water mist ejected from the three circles of spray heads 301. The water mist can be sprayed and attached to the particulate impurities in the waste gas. After the particulate impurities adhere to a large number of small water droplets in the water mist, their weight increases, and they fall from the waste gas to the water at the inner bottom of the filter cartridge 1 by virtue of the increased gravity. In this way, the impurities in the waste gas are separated from the waste gas, and the filtration treatment of the waste gas is completed;

[0090] The impurities that fall into the water at the inner bottom of the filter cartridge 1 settle and accumulate at the inner bottom of the filter cartridge 1. The valve on the impurity discharge pipe 102 needs to be opened regularly to discharge the settled and accumulated impurities and dust;

[0091] The water at the inner bottom of the filter cartridge 1 is pressurized and sucked into the pump housing of the centrifugal water supply pump 5 in turn through a circle of metal filter screens 803, the space between the two discs 801, and the inlet pipe 501, and is conveyed to the water supply fitting 2 by the L-shaped outlet pipe 502. The impurities that fall into the water are filtered and intercepted by the circle of metal filter screens 803 outside the rotary filtration mechanism 8.

[0092] In this article, the following points need to be noted:

[0093] 1. The attached drawings of the embodiments of the present invention only relate to the structures involved in the embodiments of the present invention. Other structures can refer to the general design.

[0094] 2. Without conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other to obtain new embodiments.

[0095] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A waste gas filtering device for silica gel production, comprising: A filter cartridge (1) and a centrifugal water supply pump (5), wherein the inner bottom of the filter cartridge (1) is fixedly provided with the centrifugal water supply pump (5), and the inner bottom of the filter cartridge (1) is filled with water for filtering the exhaust gas; It is characterized in that a water barrier (4) is fixedly provided on the inner side of the filter cylinder (1) at a position above the centrifugal water supply pump (5), and the water barrier (4) is a structure with an open top and a closed bottom; a water inlet pipe (501) is welded at the center position of a circular side wall of the pump casing of the centrifugal water supply pump (5), and a rotating filter mechanism (8) is provided on the water inlet pipe (501), and a circle of metal filter screen (803) is provided on the outer periphery of the rotating filter mechanism (8), and the rotating filter mechanism (8) uses centrifugal force to clear the blocked impurities on the metal filter screen (803); The first impeller (503) is rotatably arranged inside the pump casing of the centrifugal water supply pump (5), and the first impeller (503) is transmission-connected to the rotary filter mechanism (8); the internal water level of the filter cartridge (1) is higher than the water inlet pipe (501) but lower than the top opening of the water barrier box (4), and the height of the water barrier box (4) is twice the radius of the rotary filter mechanism (8); The outer peripheral top of the rotating filtering mechanism (8) and the metal filter (803) located on this part penetrate the bottom plate of the watertight box (4) and protrude into the watertight box (4); two sets of pumping and draining mechanisms driven by the first impeller (503) to suck and drain the water inside the watertight box (4) are symmetrically arranged at the bottom of the watertight box (4).

2. The waste gas filtering device for silica gel production according to claim 1, characterized in that: The rotary filtering mechanism (8) comprises a disc (801), a connecting short shaft (802) and a metal filter (803). The disc (801) is arranged at two intervals. A circle of connecting short shafts (802) is welded between the outer edges of the two discs (801). A circle of water troughs is formed between the connecting short shafts (802). The metal filter (803) corresponds to the water troughs one by one and is installed to cover the water troughs. The top of the outer periphery of the rotary filtering mechanism (8) is the top of two discs (801).

3. The waste gas filtering device for silica gel production according to claim 2, characterized in that: A circular groove is formed through the center of the disc (801) facing the centrifugal water supply pump (5), and the circular groove is rotatably matched with the opening portion of the head end of the water inlet pipe (501); The central rotation axis (5031) of the first impeller (503) passes through the water inlet pipe (501) and the head end is fixedly connected to the center position of another disc (801).

4. The waste gas filtering device for silica gel production according to claim 3, characterized in that: A conical gear ring (804) is fixedly mounted at the center position of the outer side of the disc (801) away from the water inlet pipe (501).

5. The waste gas filtering device for silica gel production according to claim 4, characterized in that: The pumping mechanism comprises: an L-shaped water suction pipe (401), a water suction cover (402) and a rotary suction assembly (7); the two L-shaped water suction pipes (401) in the two sets of pumping mechanisms are symmetrically welded to the bottom plate of the water barrier box (4); the head ends of the two L-shaped water suction pipes (401) are both welded with water suction covers (402) with increased diameters; The rotary suction assembly (7) comprises: a second impeller (701), a wheel shaft (702) and a bevel gear (703); the wheel shaft (702) is rotatably mounted in the transverse pipe section of the L-shaped water suction pipe (401); the wheel shaft (702) passes through the bent portion of the L-shaped water suction pipe (401); one end of the wheel shaft (702) protruding from the L-shaped water suction pipe (401) is fixedly sleeved with the bevel gear (703); and the other end is fixedly sleeved with the second impeller (701); The second impellers (701) on the two sets of rotary suction components (7) are arranged in two water absorption covers (402), and the two bevel gears (703) on the two sets of rotary suction components (7) are symmetrically meshed with the bevel gear ring (804) for transmission.

6. The waste gas filtering device for silica gel production according to claim 5, characterized in that: A submersible motor (6) is fixedly mounted on one long side of the bottom plate of the watertight box (4), and the head end of the driving shaft of the submersible motor (6) is fixedly connected to a portion of the disc (801) located inside the conical gear ring (804).

7. The waste gas filtering device for silica gel production according to claim 1, characterized in that: Three water distribution rings (3) are welded on the inner side of the filter cylinder (1) at equal intervals in the upper and lower directions, and a circle of nozzles (301) are fixedly mounted on the inner rings of the three water distribution rings (3) by screwing, and the three water distribution rings (3) are located above the water barrier box (4); A water supply pipe fitting (2) is fixedly arranged on the outer side of the filter cartridge (1) wall. The water supply pipe fitting (2) is composed of a vertical guide tube, three L-shaped bends welded at equal intervals on the upper half of the vertical guide tube, and an L-shaped bend welded to the bottom end of the vertical guide tube. The head ends of the three upper L-shaped bends are welded through the filter cartridge (1) wall and are respectively welded to three water distribution rings (3). The longitudinal pipe section of the lower L-shaped bend is welded through the filter cartridge (1) wall and is connected to the L-shaped water outlet pipe (502).

8. The waste gas filtering device for silica gel production according to claim 1, characterized in that: Two longitudinal support plates are welded at intervals between the water barrier box (4) and the wall of the filter cartridge (1), and the water barrier box (4) is fixed in the filter cartridge (1) via the two longitudinal support plates.

9. The waste gas filtering device for silica gel production according to claim 1, characterized in that: A conical gas collecting hood is fixedly mounted on the top opening of the filter cartridge (1), and an exhaust pipe (101) is welded to the center of the top of the conical gas collecting hood; The bottom of the filter cartridge (1) is a cone cover structure, an impurity discharge pipe (102) is welded at the center of the bottom of the cone cover structure, and an air intake pipe (103) and a water supply pipe (104) with a valve are welded at intervals in the lower half of the filter cartridge (1) wall. A support base (105) is welded downwardly on the outer periphery of the cone cover structure.

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