A hydrogen fluoride washing device

Abstract

The present invention relates to the technical field of chemical equipment, and specifically to a hydrogen fluoride washing device, which includes a washing tower, an air inlet is provided at the bottom of the washing tower, an air outlet is provided at the top of the washing tower, a first washing part, a second washing part and two filter plates spaced apart in the axial direction are inserted in the washing tower, a filler is filled between the two filter plates, and a plurality of first through holes are provided on each filter plate; the first washing part is located between the air inlet and the filter plate located below, the second washing part is located between the air outlet and the filter plate located above, and the first washing part and the second washing part are both configured to spray a spray liquid. When in use, the gas enters from the air inlet, and is first washed by the spray liquid sprayed by the first washing part to remove some solid impurities, and then passes through the first through hole into the filler, and is washed by the spray liquid sprayed by the second washing part, and then discharged from the air outlet, thereby reducing the blockage of the filler and improving the washing efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of chemical equipment, in particular to a hydrogen fluoride washing device. Background Art

[0002] Hydrogen fluoride (HF) is a colorless, toxic gas with a pungent odor and strong hygroscopicity. It can react with a variety of compounds to produce different products, such as water, silicon tetrafluoride or metal fluorides, and is widely used in industry to manufacture fluorocarbons, inorganic fluorides and as a catalyst for organic chemical reactions.

[0003] When hydrogen fluoride is produced by reacting fluorite with sulfuric acid using a rotary reactor, on the one hand, the hydrogen fluoride generated by the reaction needs to enter a washing tower for pretreatment, and on the other hand, the furnace gas discharged from the rotary reactor contains a variety of gases and sulfuric acid mist. In order to prevent it from being discharged into the atmosphere and causing pollution, the furnace gas also needs to be passed into a washing tower for washing. The washing tower commonly used is a packed washing tower. In the related art, for example, Chinese patent CN206082088U discloses a hydrogen fluoride tail gas washing tower, in which packing is arranged, gas is fed from the bottom, and spray liquid is fed from the top, and the two react in the packing area.

[0004] Although the above-mentioned hydrogen fluoride tail gas scrubbing tower can improve the scrubbing effect of hydrogen fluoride to a certain extent, it is found in actual use that during the rising process of the gas in the scrubbing tower, certain particulate impurities will be carried into the packing layer, which can easily cause the packing layer to be blocked and affect the scrubbing efficiency of hydrogen fluoride. Summary of the invention

[0005] Based on this, it is necessary to provide a hydrogen fluoride washing device to address the problem of low efficiency in the current hydrogen fluoride washing process.

[0006] The above purpose is achieved through the following technical solutions:

[0007] A hydrogen fluoride washing device, comprising a washing tower, wherein an air inlet is arranged at the bottom of the washing tower, an air outlet is arranged at the top of the washing tower, a first washing part, a second washing part and two filter plates are installed in the washing tower, the two filter plates are arranged at intervals along the axial direction, a filler is filled between the two filter plates, and each of the filter plates is provided with a plurality of first through holes; the first washing part is located between the air inlet and the filter plate located below, the second washing part is located between the air outlet and the filter plate located above, and the first washing part and the second washing part are both configured to spray a spray liquid.

[0008] Furthermore, the first washing part includes a first liquid inlet pipe and a first spray rack, the first end of the first liquid inlet pipe is inserted into the washing tower, and the second end is located outside the washing tower; the first spray rack is sleeved on the first end, and is configured to receive the shower liquid and spray the shower liquid evenly in the circumferential direction.

[0009] Furthermore, a plurality of liquid outlet holes are circumferentially arranged on the circumferential side wall of the first end; the first spray rack has a base cylinder and a filter ring, the base cylinder is sleeved on the first end, and is coaxially arranged with the washing tower and can rotate on its own, a plurality of liquid outlets are circumferentially arranged on the circumferential side wall of the base cylinder, and the liquid outlets are connected with the liquid outlet holes in a one-to-one correspondence; the filter ring is arranged as a conical structure, and the small end is arranged upward, a plurality of second through holes are arranged on the filter ring, and a plurality of guide plates are circumferentially arranged at the bottom of the filter ring, the guide plates are inclined, and are arranged alternately with the liquid outlets in the circumferential direction.

[0010] Furthermore, the filter ring is configured as a conical structure, with the small end facing upward.

[0011] Furthermore, the hydrogen fluoride washing device also includes a plurality of nozzles, which are arranged on the base cylinder at intervals along the circumferential direction, the liquid inlet end of the nozzle is inserted into the base cylinder and connected to the first liquid inlet pipe, and the liquid outlet end of the nozzle is suspended and faces the filter plate located below.

[0012] Furthermore, the nozzle can swing back and forth around its own liquid inlet end to clean the filter plate located below along the radial direction of the base tube; the hydrogen fluoride washing device also includes a transmission part, which is configured to drive the nozzle to swing back and forth around its own liquid inlet end.

[0013] Furthermore, the transmission part includes a connecting rod and a plurality of transmission bars, one end of the connecting rod is fixed and coaxially arranged on the filter plate located below, and the other end is relatively rotatably arranged on the base cylinder, and a plurality of guide plates are arranged on the connecting rod at intervals along the circumferential direction; the transmission bars and the nozzles are arranged one by one and are obliquely inserted on the base cylinder, and the transmission bars have a tendency to move along their own extension direction and toward one side close to the axis of the base cylinder, and form a transmission fit with the liquid inlet end, and form a stop fit with the guide plate.

[0014] Furthermore, the hydrogen fluoride washing device also includes a regulating part, which is configured to be able to adjust the pressure of the spray liquid sprayed from the nozzle in direct proportion to the distance between the liquid outlet end of the nozzle and the filter plate located below along the spray direction of the nozzle.

[0015] Furthermore, the regulating part includes a partition tube and a plurality of partition plates, the partition tube is coaxial and inserted in the base tube and is connected to the first liquid inlet pipe; the partition plates are inserted in the nozzle one by one and divide the injection channel of the nozzle into a first sub-channel and a second sub-channel, the first sub-channel is connected to the area between the partition tube and the base tube, and the second sub-channel is connected to the partition tube.

[0016] Furthermore, the transmission part also includes a plurality of elastic members, which are arranged one by one with the transmission bars and connected between the transmission bar and the base tube. Under the action of the elastic members, the transmission bar has a tendency to move along its own extension direction and toward the side close to the axis of the base tube.

[0017] The beneficial effects of the present invention are:

[0018] When a hydrogen fluoride washing device provided by the present invention is used, gas is first introduced into the washing tower through the air inlet, the gas is first washed by the shower liquid sprayed by the first washing part to remove some solid impurities, then passes through the first through hole into the filler and is washed by the shower liquid sprayed by the second washing part before being discharged from the air outlet; by arranging that the gas is washed for the first time before entering the filler, it is beneficial to reduce the solid particles carried in the gas, while reducing the blockage of the filler, it is beneficial to reduce the passage time of the gas, so that the washing efficiency can be improved; and by arranging that the gas is discharged from the air outlet after being washed twice, it is beneficial to improve the washing effect.

[0019] Furthermore, by arranging a plurality of second through holes on the filter ring, the gas can be filtered through the second through holes when in use; by arranging the base cylinder to be able to rotate, when in use, the spray liquid can first flow into the interior of the washing tower through the first liquid inlet pipe, and then be sprayed out from the bottom of the filter ring through the liquid outlet hole and the liquid outlet in sequence, and the spray liquid can drive the base cylinder to rotate under the guidance of the guide plate, which can increase the difficulty of the gas passing through the second through holes on the one hand, thereby facilitating the removal of more solid impurities in the gas, and on the other hand, the solid impurities adhering to the filter ring can be thrown off under the action of centrifugal force, thereby ensuring the filtering effect of the filter ring.

[0020] Furthermore, by setting the filter ring to a conical structure with the small end facing upward, the spray liquid can move outward along the bottom conical surface of the filter ring during use to clean the solid impurities adhering to the filter ring.

[0021] Furthermore, by setting a nozzle, when in use, the shower liquid is sprayed through the nozzle. On the one hand, the solid impurities adhered to the lower surface of the filter plate below can be cleaned, thereby ensuring the filtering effect of the filter plate below. On the other hand, the shower liquid sprayed from the nozzle collides with the lower surface of the filter plate below to form droplets, and these droplets will also wash the rising gas, thereby improving the utilization rate of the shower liquid and further improving the washing effect on the gas.

[0022] Furthermore, by arranging the nozzle to swing back and forth around its own liquid inlet end, when in use, the spray liquid sprayed from the nozzle can clean the filter plate located below along the radial direction of the base tube, thereby achieving comprehensive cleaning of the filter plate located below.

[0023] Furthermore, by providing an adjustment portion, the pressure of the shower liquid sprayed from the nozzle can be adjusted in direct proportion to the distance between the liquid outlet end of the nozzle and the filter plate located below along the spray direction of the nozzle during use. When the distance between the liquid outlet end of the nozzle and the filter plate located below is relatively close, the pressure of the shower liquid sprayed from the nozzle is reduced to reduce the waste of the shower liquid. When the distance between the liquid outlet end of the nozzle and the filter plate located below is relatively far, the pressure of the shower liquid sprayed from the nozzle is increased. This allows the shower liquid to clean the far end of the filter plate located below and ensure that the shower liquid has sufficient kinetic energy when it reaches the lower surface of the filter plate located below, thereby ensuring the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the three-dimensional structure of a hydrogen fluoride washing device provided in one embodiment of the present invention;

[0025] Figure 2 A schematic cross-sectional view of a hydrogen fluoride washing device provided in one embodiment of the present invention;

[0026] Figure 3 for Figure 2 A schematic diagram of the partially enlarged structure at center A;

[0027] Figure 4 A schematic diagram of the three-dimensional structure of the first washing part, the nozzle, the transmission part and the adjustment part of the hydrogen fluoride washing device provided in one embodiment of the present invention when they are assembled;

[0028] Figure 5 A schematic diagram of the exploded view of the parts when assembling the first washing part, the nozzle, the transmission part and the adjustment part of the hydrogen fluoride washing device provided in one embodiment of the present invention;

[0029] Figure 6 for Figure 5 A schematic diagram of the partially enlarged structure at B in the middle;

[0030] Figure 7 A schematic diagram of the top view of the structure of the first washing part, the nozzle, the transmission part and the adjustment part of the hydrogen fluoride washing device provided in one embodiment of the present invention when they are assembled;

[0031] Figure 8 for Figure 7 Middle CC section view;

[0032] Fig. 9 A schematic diagram of the three-dimensional structure of a first spray frame of a hydrogen fluoride washing device provided in one embodiment of the present invention;

[0033] Fig.10 A schematic diagram of a partially enlarged cross-section of a first liquid inlet pipe of a hydrogen fluoride washing device provided in one embodiment of the present invention.

[0034] in:

[0035] 1. washing tower; 101. air inlet; 102. air outlet; 11. filter plate; 111. first through hole;

[0036] 2. first washing part; 21. first liquid inlet pipe; 211. liquid outlet; 212. sleeve ring; 22. first spray rack; 221. base tube; 2211. liquid outlet; 2212. mounting groove; 2213. ball joint groove; 2214. hinge groove; 2215. slide groove; 222. filter ring; 2221. second through hole; 223. guide plate;

[0037] 3. Second washing section; 31. Second liquid inlet pipe; 32. Second spray rack;

[0038] 4. Nozzle; 401. First branch channel; 402. Second branch channel; 41. Articulated column;

[0039] 5. Transmission part; 51. Connecting rod; 511. Guide plate; 52. Transmission bar;

[0040] 6. Adjustment unit; 61. Separation tube; 62. Separation plate;

[0041] 7. Liquid pump;

[0042] 8. Exhaust tower; 81. Connecting pipe. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0044] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned herein, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0045] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0046] like Figures 1 to 10 As shown, a hydrogen fluoride washing device provided in an embodiment of the present invention is used for washing hydrogen fluoride or furnace gas, and is configured to include a washing tower 1, an air inlet 101 is provided at the bottom of the washing tower 1, an air outlet 102 is provided at the top of the washing tower 1, a first washing section 2, a second washing section 3 and two filter plates 11 are inserted in the washing tower 1, the two filter plates 11 are arranged at intervals along the axial direction, a filler is filled between the two filter plates 11, and each filter plate 11 is provided with a plurality of first through holes 111; the first washing section 2 is located between the air inlet 101 and the filter plate 11 located below, the second washing section 3 is located between the air outlet 102 and the filter plate 11 located above, and the first washing section 2 and the second washing section 3 are both configured to spray a spray liquid.

[0047] Specifically in this embodiment, Figure 1 and Figure 2As shown, the washing tower 1 is arranged vertically when in use, and the air inlet 101 is opened on the left circumferential side wall of the washing tower 1. An exhaust tower 8 is arranged vertically on the right side of the washing tower 1, and a connecting port is opened on the left circumferential side wall of the bottom of the exhaust tower 8. The exhaust tower 8 is arranged to be connected to the washing tower 1 through a connecting pipe 81 during installation. The connecting pipe 81 is arranged to be an S-shaped structure, and is arranged to be connected to the air outlet 102 at the left end and the connecting port at the right end during installation; the filter plate 11 is arranged to be a disc-shaped structure, and is arranged to be fixedly inserted into the washing tower 1 so as to coincide with the axis of the washing tower 1 during installation.

[0048] In order to provide the first washing part 2 and the second washing part 3 with the spray liquid, the hydrogen fluoride washing device is configured to further include a liquid pump 7, such as Figure 2 As shown, the liquid pump 7 is arranged between the washing tower 1 and the exhaust tower 8, and the liquid extraction end of the liquid pump 7 is a three-way structure, and the first branch end is connected to the storage tank storing the shower liquid through a pipeline, and the second branch end is connected to the bottom of the washing tower 1 through a pipeline, and a solenoid valve is provided at the connection between the second branch end and the pipeline; the liquid discharge end of the liquid pump 7 is set as a three-way structure, and the first branch end is connected to the first washing part 2 through a pipeline to provide shower liquid to the first washing part 2, and the second branch end is connected to the second washing part 3 through a pipeline to provide shower liquid to the second washing part 3.

[0049] Initially, the solenoid valve is in the closed state.

[0050] When in use, the liquid pump 7 is first started, and the spray liquid inside the storage tank is transported to the first washing part 2 and the second washing part 3 through the pipeline under the suction of the liquid pump 7, and then moves vertically from top to bottom.

[0051] Then, gas is introduced into the washing tower 1 through the air inlet 101, and the gas moves in the vertical direction from bottom to top; during the movement of the gas, the gas is first washed with the spray liquid sprayed from the first washing part 2 to remove some solid impurities, and then passes through the first through hole 111 to enter the filler and is washed with the spray liquid sprayed from the second washing part 3, and then is discharged through the air outlet 102, the connecting pipe, the connecting port, and the exhaust tower 8 in sequence; by arranging the first washing of the gas before entering the filler, it is beneficial to reduce the solid particles carried in the gas, and while reducing the blockage of the filler, it is beneficial to reduce the passage time of the gas, thereby improving the washing efficiency; and by arranging the gas to be discharged from the air outlet 102 after being washed twice, it is beneficial to improve the washing effect.

[0052] When the spray liquid at the bottom of the washing tower 1 reaches a certain liquid level, the electromagnetic valve is opened, and the liquid pump 7 simultaneously sucks the spray liquid at the bottom of the washing tower 1, thereby improving the utilization rate of the spray liquid.

[0053] In some embodiments, the first washing section 2 is configured to include a first liquid inlet pipe 21 and a first spray rack 22, the first end of the first liquid inlet pipe 21 is inserted into the washing tower 1, and the second end is located outside the washing tower 1; the first spray rack 22 is sleeved on the first end and is configured to receive the spray liquid and spray the spray liquid evenly in the circumferential direction.

[0054] Specifically in this embodiment, Figure 2 and Figure 3 As shown, the first liquid inlet pipe 21 is arranged as an L-shaped structure and has a horizontal section and a vertical section connected vertically, wherein the horizontal section is arranged horizontally during installation and passes through the right circumferential side wall of the washing tower 1, the right end of the horizontal section is connected to the first branch end of the liquid discharge end of the liquid pump 7, and the vertical section is arranged vertically during installation, and the upper end is suspended, and the lower end is fixedly connected to the left end of the horizontal section; the first spray frame 22 is arranged to be sleeved on the upper end of the vertical section during installation.

[0055] When in use, under the suction of the liquid pump 7 , the spray liquid inside the storage tank first enters the first spray rack 22 through the first liquid inlet pipe 21 , and then is sprayed out through the first spray rack 22 .

[0056] In a further embodiment, a plurality of liquid outlet holes 211 are circumferentially arranged on the circumferential side wall of the first end; the first spray frame 22 has a base barrel 221 and a filter ring 222, the base barrel 221 is sleeved on the first end, and is coaxially arranged with the washing tower 1 and can rotate on its own, a plurality of liquid outlet ports 2211 are circumferentially arranged on the circumferential side wall of the base barrel 221, and the liquid outlet ports 2211 are connected to the liquid outlet holes 211 in a one-to-one correspondence; a plurality of second through holes 2221 are arranged on the filter ring 222, and a plurality of guide plates 223 are circumferentially arranged at the bottom of the filter ring 222, the guide plates 223 are inclined and arranged alternately with the liquid outlet ports 2211 in the circumferential direction.

[0057] Specifically in this embodiment, Fig.10 As shown, in order to facilitate the rotational cooperation between the base cylinder 221 and the first liquid inlet pipe 21, a collar 212 is fixed and coaxially sleeved on the upper outer peripheral wall of the vertical section, and the liquid outlet hole 211 is provided on the upper circumferential side wall of the vertical section and penetrates the circumferential side wall of the collar 212; Figure 3 and Figure 7 As shown, a cylindrical first sink groove is coaxially opened at the bottom of the base cylinder 221, and a first annular groove is coaxially opened on the circumferential side wall of the first sink groove. The first annular groove and the first sink groove together form a cross-shaped structure. The shape of the liquid outlet 2211 is set to be rectangular and penetrates the circumferential side wall of the base cylinder 221 and the circumferential side wall of the first annular groove. The collar 212 is set to be coaxially inserted in the first annular groove when installed; the guide plate 223 is set to be parallel to the axis of the plate surface and the base cylinder 221 when installed. In order to facilitate the inclined setting of the guide plate 223, as shown in FIG. Fig. 9As shown, the end of the guide plate 223 facing the axis of the base cylinder 221 is arranged closer to the corresponding liquid outlet 2211 in the clockwise direction than the end away from the axis of the base cylinder 221 .

[0058] During use, under the suction of the liquid pump 7, the spray liquid inside the storage tank first enters into the base cylinder 221 through the first liquid inlet pipe 21 via the liquid outlet hole 211, and then is discharged from the bottom of the filter ring 222 through the liquid outlet 2211. While washing the gas, the spray liquid synchronously drives the base cylinder 221 to rotate in the counterclockwise direction under the guidance of the guide plate 223. On the one hand, it can increase the difficulty of the gas passing through the second through hole 2221, thereby facilitating the removal of more solid impurities in the gas. On the other hand, under the action of centrifugal force, the solid impurities adhered to the filter ring 222 can be cleaned up, thereby ensuring the filtering effect of the filter ring 222; and when the spray liquid separates from the filter ring 222 and moves downward, the spray liquid can wash the rising gas.

[0059] In a further embodiment, in order to further improve the cleaning effect of the filter ring 222, the filter ring 222 is configured as a conical structure with the small end facing upward.

[0060] When in use, the spray liquid flowing out through the liquid outlet 2211 can move outward along the bottom cone surface of the filter ring 222 , so as to wash away the solid impurities adhering to the filter ring 222 .

[0061] In other embodiments, in order to ensure the filtering effect of the filter plate 11 located below, the hydrogen fluoride washing device is configured to also include a plurality of nozzles 4, and the plurality of nozzles 4 are arranged on the base cylinder 221 at intervals along the circumferential direction, and the liquid inlet end of the nozzle 4 is inserted into the base cylinder 221 and connected to the first liquid inlet pipe 21, and the liquid outlet end of the nozzle 4 is suspended and faces the filter plate 11 located below.

[0062] Specifically in this embodiment, Figure 4 As shown, the nozzle 4 is arranged on the top of the base tube 221 during installation; Figure 5 and Figure 8 As shown, the nozzle 4 is configured as a mallet-shaped hollow structure, and has a round rod-shaped part and a spherical part, wherein the axis of the round rod-shaped part passes through the center of the spherical part, and the liquid inlet end is configured as the spherical part, and the liquid outlet end is configured as the round rod-shaped part; in order to facilitate the installation of the nozzle 4, as shown Figure 6 As shown, a plurality of ball connection grooves 2213 are provided on the top surface of the base tube 221, and the plurality of ball connection grooves 2213 are arranged at intervals along the circumferential direction. When installing, the nozzle 4 is configured such that the spherical portion is inserted into the ball connection groove 2213; in order to facilitate the connection between the nozzle 4 and the first liquid inlet pipe 21, as shown in FIG. Figure 3As shown, a second annular groove is coaxially provided inside the base tube 221, the second annular groove is arranged above the first annular groove, and is connected to the first sink groove, and together with the first sink groove, a T-shaped structure is formed, and a plurality of drainage holes are provided along the circumferential direction at the top of the second annular groove, and the drainage holes and the ball joint groove 2213 are connected and arranged one by one, as shown in FIG. Figure 8 As shown, a liquid inlet is provided on the spherical part at a position opposite to the round rod-shaped part, and the liquid inlet is communicated with the liquid discharge hole.

[0063] Exemplary, such as Figure 7 As shown, taking the case where eight nozzles 4 are provided as an example, the eight nozzles 4 are arranged at equal intervals along the circumferential direction on the top of the base tube 221; accordingly, the number of the ball joint grooves 2213 is eight, and they are arranged at equal intervals along the circumferential direction; the number of the drainage holes is eight, and they are arranged at equal intervals along the circumferential direction.

[0064] During use, under the suction of the liquid pump 7, the spray liquid inside the storage tank enters the washing tower 1 through the first liquid inlet pipe 21, and then is divided into two paths, one of which passes through the liquid outlet 211 and the liquid outlet 2211 in sequence from the bottom of the filter ring 222, and the other passes through the second ring groove and the liquid discharge hole in sequence into the nozzle 4, and is sprayed out from the nozzle 4 to rinse the lower surface of the filter plate 11 located below, thereby ensuring the filtering effect of the filter plate 11 located below. At the same time, the spray liquid sprayed from the nozzle 4 collides with the lower surface of the filter plate 11 located below to form droplets that fall. These droplets will also wash the rising gas, thereby improving the utilization rate of the spray liquid while further improving the washing effect of the gas.

[0065] In a further embodiment, in order to achieve comprehensive cleaning of the filter plate 11 located below, the nozzle 4 is configured to be able to swing back and forth around its own liquid inlet end so as to clean the filter plate 11 located below along the radial direction of the base cylinder 221; the hydrogen fluoride washing device is configured to also include a transmission part 5, and the transmission part 5 is configured to drive the nozzle 4 to swing back and forth around its own liquid inlet end.

[0066] Specifically in this embodiment, in order to realize the swing of the nozzle 4 along the radial direction of the base tube 221, as shown in FIG. Figure 5 As shown, two hinged columns 41 are symmetrically and vertically arranged on the spherical surface of the spherical part of each nozzle 4, and the axis of the hinged column 41 is arranged in the horizontal direction and passes through the center of the spherical part, as shown in FIG. Figure 6 As shown, two hinge grooves 2214 are symmetrically provided on the ball side wall of each ball joint groove 2213, and the axis of the hinge groove 2214 is arranged in the horizontal direction and passes through the ball center of the ball joint groove 2213. The hinge column 41 is arranged to be rotatably inserted in the hinge groove 2214 during installation; in order to avoid interference between the nozzle 4 and the base cylinder 221 when swinging, as shown in FIG. Figure 6As shown, a plurality of mounting grooves 2212 are provided on the top surface of the base tube 221 . The mounting grooves 2212 are arranged in a rectangular structure and are sleeved in a one-to-one correspondence with the ball joint grooves 2213 . The short side midlines of the mounting grooves 2212 pass through the axis of the base tube 221 .

[0067] When in use, under the action of the transmission part 5, the nozzle 4 can swing back and forth around its own liquid inlet end, so that the spray liquid sprayed from the nozzle 4 can clean the filter plate 11 located below along the radial direction of the base tube 221, thereby achieving comprehensive cleaning of the filter plate 11 located below.

[0068] Exemplarily, when the number of the nozzles 4 is eight, the number of the mounting grooves 2212 is eight and they are arranged at equal intervals along the circumferential direction.

[0069] In a further embodiment, the transmission part 5 is configured to include a connecting rod 51 and a plurality of transmission bars 52, one end of the connecting rod 51 is fixed and coaxially arranged on the filter plate 11 located below, and the other end is relatively rotatably arranged on the base cylinder 221, and a plurality of guide plates 511 are arranged on the connecting rod 51 at intervals along the circumferential direction; the transmission bars 52 and the nozzles 4 are arranged one by one, and are obliquely inserted on the base cylinder 221, and the transmission bars 52 have a tendency to move along their own extension direction and to one side close to the axis of the base cylinder 221, and form a transmission fit with the liquid inlet end, and form a stop fit with the guide plate 511.

[0070] Specifically in this embodiment, Figure 3 As shown, the connecting rod 51 is configured as a round rod structure, and when installed, the top end is fixed and coaxially arranged at the bottom of the filter plate 11 located below, and the bottom end can be rotatably and coaxially arranged on the top surface of the base cylinder 221; Figure 7 As shown, the guide plate 511 is configured as a 7-shaped plate structure, and the plate surface of the guide plate 511 is arranged parallel to the axis of the connecting rod 51. When installed, the guide plate 511 is configured so that the plate surface close to the side of the axis of the connecting rod 51 is tangential to the connecting rod 51, and the end away from the side of the axis of the connecting rod 51 is located on the side of the other end close to the side of the axis of the connecting rod 51 along the counterclockwise direction.

[0071] like Figure 7 As shown, the transmission bar 52 is extended in the horizontal direction and is arranged parallel to the long side of the installation groove 2212, and is arranged on one side of the nozzle 4 in the clockwise direction; in order to facilitate the installation of the transmission bar 52, as shown in FIG. Figure 6 As shown, a strip-shaped slide groove 2215 is provided on the top surface of the base cylinder 221, and the slide groove 2215 is arranged parallel to and spaced apart on one side of the installation groove 2212. The transmission bar 52 is arranged to be inserted into the slide groove 2215 during installation, and can slide along the slide groove 2215; in order to facilitate the transmission cooperation between the transmission bar 52 and the liquid inlet end, as shown in FIG. Figure 6As shown, the hinge groove 2214 on the side close to the slide groove 2215 is connected to the slide groove 2215, and the circumferential side wall of the hinge column 41 on the side close to the slide groove 2215 of the spherical part of the nozzle 4 and the bottom end surface of the transmission bar 52 can be set to friction transmission, so that when the transmission bar 52 slides back and forth along the slide groove 2215, it can synchronously drive the nozzle 4 to swing back and forth.

[0072] It can be understood that the circumferential side wall of the hinge column 41 of the spherical part of the nozzle 4 close to the slide groove 2215 and the bottom end surface of the transmission bar 52 can also be set to be engaged with a gear rack, so that when the transmission bar 52 slides back and forth along the slide groove 2215, the nozzle 4 can be driven to swing back and forth synchronously.

[0073] For example, taking the case where there are four guide plates 511, the four guide plates 511 are arranged on the circumferential side wall of the connecting rod 51 at equal intervals along the circumferential direction; taking the case where there are eight transmission bars 52, the eight transmission bars 52 are arranged at equal intervals along the circumferential direction, and accordingly, there are eight slide grooves 2215, which are arranged at equal intervals along the circumferential direction.

[0074] Initially, the transmission bar 52 is located at one end of the slide slot 2215 close to the axis of the base cylinder 221 .

[0075] When in use, the spray liquid sprayed from the liquid outlet 2211 under the guidance of the guide plate 223 can drive the base cylinder 221 to rotate in the counterclockwise direction; during the process of the base cylinder 221 rotating in the counterclockwise direction, when the guide plate 511 and the transmission bar 52 come into contact, as the base cylinder 221 rotates, the transmission bar 52 moves along the slide groove 2215 in the direction away from the axis of the base cylinder 221 to the end of the slide groove 2215 away from the axis of the base cylinder 221 under the push of the guide plate 511, and drives the nozzle 4 to swing around its own liquid inlet end in the direction away from the axis of the base cylinder 221 through the transmission between the hinge column 41. At this time, the spray liquid sprayed from the nozzle 4 The liquid can clean the lower surface of the filter plate 11 located below from the inside to the outside along the radial direction of the filter plate 11 located below; when the guide plate 511 and the transmission bar 52 are out of contact, the transmission bar 52 moves along the slide groove 2215 toward the side close to the axis of the base cylinder 221 to the end of the slide groove 2215 close to the axis of the base cylinder 221, and drives the nozzle 4 to swing around its own liquid inlet end toward the side close to the axis of the base cylinder 221 through the transmission between the hinge column 41. At this time, the spray liquid sprayed from the nozzle 4 can clean the lower surface of the filter plate 11 located below from the outside to the inside along the radial direction of the filter plate 11 located below.

[0076] In a further embodiment, the hydrogen fluoride washing device is configured to further include a regulating unit 6, which is configured to be able to adjust the pressure of the spray liquid sprayed from the nozzle 4 in direct proportion to the distance between the liquid outlet end of the nozzle 4 and the filter plate 11 located below along the spray direction of the nozzle 4.

[0077] When in use, the adjustment part 6 can adjust the pressure of the shower liquid sprayed from the nozzle 4 in direct proportion to the distance between the liquid outlet end of the nozzle 4 and the filter plate 11 located below according to the spray direction of the nozzle 4, so that when the distance between the liquid outlet end of the nozzle 4 and the filter plate 11 located below is relatively close, the pressure of the shower liquid sprayed from the nozzle 4 is reduced to reduce the waste of the shower liquid. When the distance between the liquid outlet end of the nozzle 4 and the filter plate 11 located below is relatively far, the pressure of the shower liquid sprayed from the nozzle 4 is increased, so that the shower liquid can not only clean the far end of the filter plate 11 located below, but also ensure that the shower liquid has sufficient kinetic energy when it reaches the lower surface of the filter plate 11 located below, thereby ensuring the cleaning effect.

[0078] In a further embodiment, the adjusting portion 6 is configured to include a partition tube 61 and a plurality of partition plates 62. The partition tube 61 is coaxial and inserted into the base tube 221 and is connected to the first liquid inlet pipe 21. The partition plates 62 are inserted into the nozzle 4 one by one and divide the injection channel of the nozzle 4 into a first sub-channel 401 and a second sub-channel 402. The first sub-channel 401 is connected to the area between the partition tube 61 and the base tube 221, and the second sub-channel 402 is connected to the partition tube 61.

[0079] Specifically in this embodiment, Figure 8 As shown, the separator tube 61 is arranged to be coaxial at the top and fixedly connected to the top of the second annular groove during installation, and the bottom end is suspended; a third annular groove is coaxially opened inside the base tube 221, the third annular groove is arranged above the second annular groove, and is connected to the separator tube 61; the nozzle 4 is arranged to be spherical at the time of installation and is connected to the second annular groove and the third annular groove at the same time, and the separator plate 62 is arranged to be parallel to the axis of the plate surface and the round rod-shaped part during installation, and the two plate surfaces are symmetrically arranged about the axis of the round rod-shaped part, wherein the first branch channel 401 is connected to the second annular groove, and the second branch channel 402 is connected to the third annular groove.

[0080] When in use, the shower liquid flowing into the washing tower 1 from the first liquid inlet pipe 21 is divided into two large streams under the separation effect of the separation tube 61, one of which flows inside the separation tube 61, and passes through the third annular groove and the second branch channel 402 in turn to flow out from the nozzle 4, and the other large stream flows between the separation tube 61 and the base tube 221, and is divided into two small streams, one of which passes through the liquid outlet hole 211 and the first annular groove in turn to flow out from the liquid outlet 2211, and the other small stream passes through the first trough, the second annular groove, and the first branch channel 401 in turn to flow out from the nozzle 4, and the pressure of the shower liquid flowing in the first branch channel 401 is lower than the pressure of the shower liquid flowing in the second branch channel 402.

[0081] like Figure 8As shown, when the nozzle 4 swings around its own liquid inlet end toward the side close to the axis of the base tube 221, the distance between the liquid outlet end of the nozzle 4 and the filter plate 11 located below gradually decreases; during the rotation of the nozzle 4, the connection ratio between the second sub-channel 402 and the second annular groove gradually increases, so that the proportion of the shower liquid sprayed from the nozzle 4 that comes from the second annular groove gradually increases, and then the pressure of the shower liquid sprayed from the nozzle 4 gradually decreases, thereby reducing the waste of the shower liquid.

[0082] When the nozzle 4 swings around its own liquid inlet end in a direction away from the axis of the base tube 221, the distance between the liquid outlet end of the nozzle 4 and the filter plate 11 located below gradually increases; during the rotation of the nozzle 4, the connection ratio between the second sub-channel 402 and the second annular groove gradually decreases, so that the proportion of the shower liquid sprayed from the nozzle 4 coming from the third annular groove gradually increases, and then the pressure of the shower liquid sprayed from the nozzle 4 gradually increases, so that the shower liquid can not only clean the far end of the filter plate 11 located below, but also ensure that the shower liquid has sufficient kinetic energy when it reaches the lower surface of the filter plate 11 located below, thereby ensuring the cleaning effect.

[0083] In other embodiments, in order to realize that the transmission bar 52 has a tendency to move along its own extension direction and toward one side close to the axis of the base cylinder 221, the transmission part 5 can be configured to also include a plurality of elastic members, and the elastic members and the transmission bar 52 are arranged in a one-to-one correspondence and connected between the transmission bar 52 and the base cylinder 221. Under the action of the elastic members, the transmission bar 52 has a tendency to move along its own extension direction and toward one side close to the axis of the base cylinder 221.

[0084] Specifically in this embodiment, the elastic member can be set as a compression spring. There are multiple compression springs, which are inserted one by one into the slide groove 2215 and connected between the end of the transmission bar 52 away from the axis of the base cylinder 221 and the end of the slide groove 2215 away from the axis of the base cylinder 221. Under the action of the compression spring, the transmission bar 52 has a tendency to move along its own extension direction and toward the side close to the axis of the base cylinder 221.

[0085] It can be understood that the elastic member can also be set as a tension spring. There are multiple tension springs, which are inserted one by one into the slide groove 2215 and connected between the end of the slide groove 2215 close to the axis of the base cylinder 221 and the end of the transmission bar 52 close to the axis of the base cylinder 221. Under the action of the tension spring, the transmission bar 52 has a tendency to move along its own extension direction and toward the side close to the axis of the base cylinder 221.

[0086] In other embodiments, in order to realize that the transmission bar 52 has a tendency to move along its own extension direction and toward the side close to the axis of the base cylinder 221, the transmission part 5 can also be configured to include a plurality of pairs of magnetic blocks whose number is equal to the number of the transmission bars 52, and the two magnetic blocks of the same pair are inserted in the same slide groove 2215, and can be configured so that one of the magnetic blocks is inserted at the end of the transmission bar 52 away from the axis of the base cylinder 221, and the other magnetic block is inserted at the end of the slide groove 2215 away from the axis of the base cylinder 221, and the ends of the two magnetic blocks of the same pair with the same magnetic poles are arranged opposite to each other, and under the action of like repulsion, the transmission bar 52 has a tendency to move along its own extension direction and toward the side close to the axis of the base cylinder 221.

[0087] It can be understood that the two magnetic blocks in the same pair can also be arranged that one of the magnetic blocks is inserted in the end of the transmission bar 52 close to the axis of the base cylinder 221, and the other magnetic block is inserted in the end of the slide groove 2215 close to the axis of the base cylinder 221. The ends with opposite poles of the two magnetic blocks in the same pair are arranged relative to each other. Under the action of opposite poles attraction, the transmission bar 52 has a tendency to move along its own extension direction and toward the side close to the axis of the base cylinder 221.

[0088] In other embodiments, the second washing section 3 is configured to include a second liquid inlet pipe 31 and a second spray rack 32, one end of the second liquid inlet pipe 31 is inserted into the washing tower 1, and the other end is located outside the washing tower 1; the second spray rack 32 is sleeved on one end of the second liquid inlet pipe 31 located inside the washing tower 1, and is configured to receive the spray liquid and spray the spray liquid evenly in the circumferential direction.

[0089] Specifically in this embodiment, Figure 2 As shown, the second liquid inlet pipe 31 is arranged as an L-shaped structure and has a horizontal section and a vertical section vertically connected, wherein the horizontal section of the second liquid inlet pipe 31 is arranged horizontally during installation and passes through the right circumferential side wall of the washing tower 1, the right end of the horizontal section of the second liquid inlet pipe 31 is connected to the second branch end of the liquid discharge end of the liquid pump 7, the vertical section of the second liquid inlet pipe 31 is arranged vertically during installation, and the upper end is connected to the left end of the horizontal section of the second liquid inlet pipe 31, and the lower end is suspended; the second spray frame 32 is arranged to be sleeved on the lower end of the vertical section of the second liquid inlet pipe 31 during installation.

[0090] When in use, under the suction of the liquid pump 7 , the spray liquid inside the storage tank first enters the second spray rack 32 through the second liquid inlet pipe 31 , and then is sprayed out through the second spray rack 32 .

[0091] In a further embodiment, the second spray rack 32 can be configured to have an inverted T-shaped rotating body part, and an inverted T-shaped second groove is coaxially opened on the top end surface of the rotating body part. The second spray rack 32 is configured to be fixedly sleeved on the vertical section of the second liquid inlet pipe 31 through the second groove during installation, and a plurality of hollow mounting tubes are circumferentially evenly spaced on the circumferential side wall of the large end of the rotating body part, the mounting tube is connected to the second groove, and a plurality of spray heads are arranged on the bottom outer wall of each mounting tube, and the plurality of spray heads on the same mounting tube are arranged at equal intervals along the axial direction of the mounting tube, and are all connected to the mounting tube.

[0092] When in use, the spray liquid flowing into the washing tower 1 from the second liquid inlet pipe 31 passes through the second sedimentation tank and the mounting tube in turn and is sprayed out from the spray head, then moves vertically from bottom to top, and then falls on the filter plate 11 located above, and passes through the first through hole 111 into the space between the fillers to wash the rising gas.

[0093] In other embodiments, the filler may be configured as a honeycomb ceramic filler. When in use, the gas washing time can be significantly prolonged and the washing effect can be improved due to the tortuous inner pores and large quantity of the honeycomb ceramic filler.

[0094] In combination with the above embodiments, the use principle and working process of the embodiments of the present invention are as follows:

[0095] First, start the liquid pump 7. The spray liquid in the storage tank is transported to the first liquid inlet pipe 21 and the second liquid inlet pipe 31 through the pipeline under the suction of the liquid pump 7. The spray liquid entering the first liquid inlet pipe 21 is divided into two large streams under the separation effect of the separation pipe 61. One large stream flows inside the separation pipe 61, and passes through the third annular groove and the second branch channel 402 in turn to flow out from the nozzle 4. The other large stream flows between the separation pipe 61 and the base tube 221 and is divided into two small streams. One small stream passes through the liquid outlet hole 211 and the first annular groove in turn to flow out from the liquid outlet 2211, and synchronously drives the base tube 221 to rotate counterclockwise under the guidance of the guide plate 223. The other small stream passes through the first trough, the second annular groove, and the first branch channel 401 in turn to flow out from the nozzle 4. At the same time, gas is filled into the washing tower 1 through the air inlet 101.

[0096] During the process of the base cylinder 221 rotating in the counterclockwise direction, when the guide plate 511 and the transmission bar 52 come into contact, as the base cylinder 221 rotates, the transmission bar 52 moves along the slide groove 2215 in the direction away from the axis of the base cylinder 221 to the end of the slide groove 2215 away from the axis of the base cylinder 221 under the push of the guide plate 511, and drives the nozzle 4 to swing around its own liquid inlet end in the direction away from the axis of the base cylinder 221 through the transmission between the hinge column 41, and the compression spring accumulates force. At this time, the spray liquid sprayed from the nozzle 4 can be sprayed from the inside to the outside along the radial direction of the filter plate 11 located below. The lower surface of the filter plate 11 located below is cleaned; when the guide plate 511 and the transmission bar 52 are out of contact, the compression spring is released and drives the transmission bar 52 to move along the slide groove 2215 to the end of the slide groove 2215 close to the axis of the base cylinder 221, and drives the nozzle 4 to swing around its own liquid inlet end toward the side close to the axis of the base cylinder 221 through the transmission between the hinge column 41. At this time, the spray liquid sprayed from the nozzle 4 can clean the lower surface of the filter plate 11 located below from the outside to the inside along the radial direction of the filter plate 11 located below.

[0097] When the nozzle 4 swings around its own liquid inlet end toward the side close to the axis of the base tube 221, the distance between the liquid outlet end of the nozzle 4 and the filter plate 11 located below gradually decreases; during the rotation of the nozzle 4, the connection ratio between the second sub-channel 402 and the second annular groove gradually increases, so that the proportion of the shower liquid sprayed from the nozzle 4 coming from the second annular groove gradually increases, and the pressure of the shower liquid sprayed from the nozzle 4 gradually decreases, thereby reducing the waste of the shower liquid.

[0098] When the nozzle 4 swings around its own liquid inlet end in a direction away from the axis of the base tube 221, the distance between the liquid outlet end of the nozzle 4 and the filter plate 11 located below gradually increases; during the rotation of the nozzle 4, the connection ratio between the second sub-channel 402 and the second annular groove gradually decreases, so that the proportion of the shower liquid sprayed from the nozzle 4 coming from the third annular groove gradually increases, and the pressure of the shower liquid sprayed from the nozzle 4 gradually increases, so that the shower liquid can not only clean the far end of the filter plate 11 located below, but also ensure that the shower liquid has sufficient kinetic energy when it reaches the lower surface of the filter plate 11 located below, thereby ensuring the cleaning effect.

[0099] The spray liquid entering the second liquid inlet pipe 31 passes through the second trough and the mounting tube in sequence and is sprayed out from the spray head.

[0100] The gas is first washed with the spray liquid sprayed from the first washing section 2 to remove some solid impurities, then passes through the first through hole 111 into the filler and is washed with the spray liquid sprayed from the second washing section 3, and then is discharged through the gas outlet 102, the connecting pipe, the connecting port, and the exhaust tower 8 in sequence.

[0101] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0102] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A hydrogen fluoride washing device, characterized in that: The hydrogen fluoride washing device comprises a washing tower, an air inlet is provided at the bottom of the washing tower, an air outlet is provided at the top of the washing tower, a first washing part, a second washing part and two filter plates are installed in the washing tower, the two filter plates are arranged at intervals along the axial direction, a filler is filled between the two filter plates, and a plurality of first through holes are provided on each of the filter plates; the first washing part is located between the air inlet and the filter plate located below, the second washing part is located between the air outlet and the filter plate located above, the first washing part and the second washing part are both configured to spray a spray liquid, the first washing part comprises a first liquid inlet pipe and a first spray The spray nozzle is provided at the bottom of the filter housing, and the ... A plurality of guide plates are arranged, the guide plates are arranged obliquely and arranged alternately with the liquid outlet along the circumferential direction, the filter ring is arranged as a conical structure, and the small end is arranged upward, the hydrogen fluoride washing device also includes a plurality of nozzles, the plurality of nozzles are arranged on the base cylinder at intervals along the circumferential direction, the liquid inlet end of the nozzle is inserted into the base cylinder and is connected to the first liquid inlet pipe, the liquid outlet end of the nozzle is suspended and faces the filter plate located below, the nozzle can swing back and forth around its own liquid inlet end to clean the filter plate located below along the radial direction of the base cylinder; the hydrogen fluoride washing device also includes a transmission part, the transmission part is configured to drive the nozzle The hydrogen fluoride washing device reciprocates around its own liquid inlet end, and the regulating part is configured to be able to adjust the pressure of the spray liquid sprayed from the nozzle in direct proportion to the distance between the liquid outlet end of the nozzle and the filter plate located below along the spray direction of the nozzle, the regulating part includes a partition tube and a plurality of partition plates, the partition tube is coaxial and inserted in the base tube, and is connected to the first liquid inlet pipe; the partition plates are inserted in the nozzle one by one, and divide the injection channel of the nozzle into a first sub-channel and a second sub-channel, the first sub-channel is connected to the area between the partition tube and the base tube, and the second sub-channel is connected to the partition tube.

2. The hydrogen fluoride washing device according to claim 1, characterized in that: The transmission part includes a connecting rod and a plurality of transmission bars, one end of the connecting rod is fixed and coaxially arranged on the filter plate located below, and the other end is relatively rotatably arranged on the base cylinder, and a plurality of guide plates are arranged on the connecting rod at intervals along the circumferential direction; the transmission bars and the nozzles are arranged one by one and are obliquely inserted on the base cylinder, and the transmission bars have a tendency to move along their own extension direction and toward the side close to the axis of the base cylinder, and form a transmission fit with the liquid inlet end, and form a stop fit with the guide plate.

3. The hydrogen fluoride washing device according to claim 2, characterized in that: The transmission part also includes a plurality of elastic members, which are arranged one by one with the transmission bars and connected between the transmission bars and the base tube. Under the action of the elastic members, the transmission bar has a tendency to move along its own extension direction and toward the side close to the axis of the base tube.

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