Environment-friendly treatment device for PVC mercury-containing wastewater by calcium carbide method

Abstract

The invention relates to the field of mercury-containing wastewater environment-friendly treatment, and discloses a calcium carbide method PVC mercury-containing wastewater environment-friendly treatment device which comprises a rack, an activated carbon adsorption barrel is vertically installed at the left position in the rack, a liquid inlet hopper is arranged at the top of the activated carbon adsorption barrel, and a liquid inlet pipe is arranged at the lower end of the liquid inlet hopper in a communicating mode; the liquid inlet pipe downwards extends into the activated carbon adsorption cylinder, a plurality of groups of inner cavities are longitudinally formed in the activated carbon adsorption cylinder at equal intervals, an activated carbon adsorber is rotationally arranged in the middle of each group of inner cavity, and a curved blocking seat acting on the activated carbon adsorber is arranged on the left side of each inner cavity; and an adsorption chamber is arranged in the activated carbon adsorber. The first servo motor is started, through a series of transmission, the multiple sets of activated carbon adsorbers based on the liquid inlet pipe rotate at a high speed, waste activated carbon particles in the activated carbon adsorbers conduct centrifugal motion and are randomly thrown out from a centrifugal material opening, the automatic discharging effect is achieved, and time and labor are saved.

Description

Technical Field

[0001] The present invention relates to the field of environmental protection treatment of mercury-containing wastewater, and particularly to an environmental protection treatment device for mercury-containing wastewater in calcium carbide method PVC production. Background Technique

[0002] With the increasingly strict environmental protection regulations and the continuous improvement of people's environmental protection awareness, the mercury emission reduction technology in calcium carbide method PVC wastewater has become a hot and difficult point in research. Aiming at the serious loss of mercuric chloride in the production process of calcium carbide method PVC, Chinese scientific research institutions and enterprises have actively carried out the research and application of mercury emission reduction technology. By improving the production process, optimizing the catalyst formula, enhancing the stability of the catalyst, reducing the loss of mercuric chloride, and at the same time strengthening the monitoring and treatment of mercury in wastewater, and adopting technical means such as chemical precipitation, activated carbon filtration, and resin adsorption, the effective removal of mercury in wastewater is achieved. Therefore, a mercury-containing wastewater treatment device will be used in the treatment process.

[0003] The existing mercury-containing wastewater treatment devices have many technical defects when in use. First, when using activated carbon to adsorb and filter wastewater, the activated carbon needs to be replaced regularly. Currently, the conventional method is to manually disassemble the filter for discharging and feeding materials. This is time-consuming and laborious for devices with a multi-stage filtration process, and the work efficiency is low. Second, when using resin to adsorb mercury ions in wastewater, due to the large gaps between resin particles and the weak activity of resin particles, the adsorption strength is insufficient during continuous operation, the saturation time is short, and the adsorption quality is reduced. Third, when using acid solution to elute resin particles, the acid solution only flows or flushes, with a short contact time and a small contact area with resin particles, which easily leads to poor elution effect. Some manufacturers will increase the dosage of acid solution. The prices of both hydrochloric acid and sulfuric acid in the market are relatively expensive, increasing the use cost.

[0004] In summary, considering that the existing facilities cannot meet the working requirements, for this reason, we propose an environmental protection treatment device for mercury-containing wastewater in calcium carbide method PVC. Summary of the Invention

[0005] The main purpose of the present invention is to provide an environmental protection treatment device for mercury-containing wastewater in calcium carbide method PVC, which can effectively solve the problems in the background technique.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is as follows: An environmental protection treatment device for mercury-containing wastewater in calcium carbide method PVC production, comprising a frame. Inside the frame, an activated carbon adsorption cylinder is vertically installed at the left position. At the top of the activated carbon adsorption cylinder, a liquid inlet hopper is provided. The lower end of the liquid inlet hopper is communicated with a liquid inlet pipe, and the liquid inlet pipe extends downward into the interior of the activated carbon adsorption cylinder. Inside the activated carbon adsorption cylinder, a number of groups of inner cavities are longitudinally and equidistantly arranged. The number of the inner cavities is preferably 3 - 4 groups. Adjacent inner cavities are partitioned by a guiding inclined plate, and the guiding inclined plate is riveted to the inner wall of the activated carbon adsorption cylinder.

[0007] As a preferred embodiment of the environmental protection treatment device for mercury-containing wastewater in calcium carbide method PVC production of the present invention, wherein: a discharge port is arranged at the lowest point of the guiding inclined plate, and a discharge pipe communicated with the inner cavity is installed at the bottom of the activated carbon adsorption cylinder.

[0008] As a preferred embodiment of the environmental protection treatment device for mercury-containing wastewater in calcium carbide method PVC production of the present invention, wherein: an activated carbon adsorber is rotatably arranged in the middle of each group of inner cavities. A curved retaining seat acting on the activated carbon adsorber is arranged on the left side of the inner cavity. An adsorption chamber is arranged inside the activated carbon adsorber. An activated carbon carrier is fixedly arranged at the bottom of the adsorption chamber. Activated carbon particles are laid on the upper end of the activated carbon carrier. A centrifugal material inlet communicated with the adsorption chamber is arranged on the side of the activated carbon adsorber. Adjacent activated carbon adsorbers are connected by a diversion pipe. An inner bearing is sleeved at the position where the diversion pipe contacts the guiding inclined plate. The uppermost group of activated carbon adsorbers is connected with the liquid inlet pipe, and the lowermost group of activated carbon adsorbers is connected with the liquid outlet pipe. The liquid outlet pipe penetrates through the lower end face of the activated carbon adsorption cylinder. Positioning bearing seats are arranged at the positions where the liquid inlet pipe and the liquid outlet pipe contact the activated carbon adsorption cylinder respectively.

[0009] As a preferred embodiment of the environmental protection treatment device for mercury-containing wastewater in calcium carbide method PVC production of the present invention, wherein: a large gear is sleeved in the middle of the liquid inlet pipe. A small gear is meshed with one side of the large gear. The small gear is sleeved on the output shaft of a first servo motor, and the first servo motor penetrates through the upper end face of the activated carbon adsorption cylinder.

[0010] As a preferred embodiment of the environmental protection treatment device for mercury-containing wastewater in calcium carbide method PVC production of the present invention, wherein: a number of groups of feeding seats are longitudinally arranged at equal intervals on the left side of the activated carbon adsorption cylinder. The number of the feeding seats is preferably 3 - 4 groups. A strip-shaped material groove is arranged inside each group of feeding seats. An activated carbon feeding hopper is installed at the upper end of each group of feeding seats. The activated carbon feeding hopper is communicated with the strip-shaped material groove. A housing is vertically welded to the left end of the feeding seat.

[0011] As a preferred embodiment of the mercury-containing wastewater environmental protection treatment device for calcium carbide method PVC of the present invention, the following is provided: A long shaft is vertically rotatably arranged inside the outer housing. The upper and lower ends of the long shaft are connected to the shell wall of the outer housing through first bearing seats. The long shaft extends upward and is connected to a second servo motor through a coupling. The second servo motor penetrates through the upper end face of the outer housing. Cams are respectively sleeved on the long shaft corresponding to each feeding seat. The number of cams is preferably 3-4 groups. A pusher that interacts with the cams is arranged inside each feeding seat.

[0012] As a preferred embodiment of the mercury-containing wastewater environmental protection treatment device for calcium carbide method PVC of the present invention, the following is provided: The pusher includes a wheel table, a pulley, a push rod, a positioning partition, a return spring, and a push sealing plate. A pulley is rotatably arranged inside the wheel table. A part of the pulley protrudes from the left end face of the wheel table and contacts the cam surface of the cam. A push rod is horizontally welded to the right end face of the wheel table. A positioning partition through which the push rod passes is riveted in the middle of the strip-shaped material groove. A return spring sleeved outside the push rod is fixed between the wheel table and the positioning partition. The right end of the push rod is connected to a push sealing plate. The push sealing plate moves along the wall inside the strip-shaped material groove and finally passes through the curved retaining seat to block the centrifugal material outlet. A deceleration structure is arranged inside the push rod and extends outside the push sealing plate. The objects of action of the deceleration structure are mercury-containing wastewater and activated carbon particles respectively.

[0013] As a preferred embodiment of the mercury-containing wastewater environmental protection treatment device for calcium carbide method PVC of the present invention, the following is provided: The deceleration structure includes a rotary motor, a rotary roller, an outer-roller bearing, elastic deceleration sheets, and liquid leakage holes. The rotary motor is horizontally installed inside the push rod. The output end of the rotary motor is connected to a rotary roller. The rotary roller is connected to the inside of the push sealing plate by means of an outer-roller bearing. A number of groups of elastic deceleration sheets are evenly welded on the end of the rotary roller protruding from the push sealing plate. The number of groups of elastic deceleration sheets is preferably 2-4 groups. A number of groups of liquid leakage holes are evenly opened on each group of elastic deceleration sheets.

[0014] As a preferred embodiment of the mercury-containing wastewater environmental protection treatment device for calcium carbide method PVC of the present invention, the following is provided: A positioning seat is arranged below the frame. A rotary table is rotatably arranged upward inside the positioning seat. A waste material groove is opened at the middle position of the upper end face of the rotary table. The lower end of the discharge pipe is located directly above the waste material groove. 1-2 groups of storage grooves are opened inside the rotary table. An opening communicating with one end of the storage groove is opened on the upper end face of the rotary table. The opening is located directly below the liquid outlet pipe. A flow collecting cover is arranged outside the opening.

[0015] As a preferred embodiment of the mercury-containing wastewater environmental protection treatment device for calcium carbide method PVC of the present invention, the following is provided: A resin adsorption cylinder is horizontally arranged inside the storage tank. One end of the resin adsorption cylinder close to the opening is connected with a bent joint pipe. A resin adsorption flow channel is opened inside the resin adsorption cylinder. A one-way valve is installed at one end of the resin adsorption flow channel far from the bent joint pipe. A liquid discharge port is opened at the bottom of the resin adsorption cylinder near the one-way valve. A liquid discharge pipe corresponding to the liquid discharge port is installed at the edge position of the rotating table.

[0016] As a preferred embodiment of the mercury-containing wastewater environmental protection treatment device for calcium carbide method PVC of the present invention, the following is provided: Two groups of annular installation grooves are opened on the inner wall of the resin adsorption cylinder. An annular pressing airbag is fixedly installed inside each group of annular installation grooves. A resin adsorption skeleton is installed inside the annular pressing airbag. A number of groups of resin particles are movably arranged inside the resin adsorption skeleton. A number of groups of convex surface telescopic parts acting on the resin adsorption skeleton are evenly distributed on the inner side surface of the annular pressing airbag. The number of the convex surface telescopic parts is preferably 6-8 groups. An air pump and a pressure relief valve are installed on the annular pressing airbag. Both the air pump and the pressure relief valve pass through the upper end surface of the resin adsorption cylinder.

[0017] As a preferred embodiment of the mercury-containing wastewater environmental protection treatment device for calcium carbide method PVC of the present invention, the following is provided: An acid liquid tank is vertically installed at the right position inside the frame. The bottom of the acid liquid tank is communicated with an acid liquid pipe. A first electromagnetic valve is arranged at the upper end of the acid liquid pipe. A water tank is connected to one side of the acid liquid tank. A water supply pipe is installed at the bottom of the water tank extending towards the acid liquid pipe. A second electromagnetic valve is arranged at the upper end of the water supply pipe.

[0018] As a preferred embodiment of the mercury-containing wastewater environmental protection treatment device for calcium carbide method PVC of the present invention, the following is provided: The resin adsorption cylinder is movably arranged inside the storage tank. The cross section of the storage tank is slightly larger than that of the resin adsorption cylinder. The middle part of the resin adsorption cylinder is divided into two parts by a corrugated expansion pipe. The left end of the resin adsorption cylinder is fixed to the tank wall of the storage tank by a number of groups of connecting springs. The number of the connecting springs is preferably 2-4 groups. A slide bar is horizontally welded to the right end of the bent joint pipe. An oscillator driving structure is arranged at the right end of the slide bar.

[0019] As a preferred embodiment of the mercury-containing wastewater environmental protection treatment device for calcium carbide method PVC of the present invention, the oscillator driving structure includes a turntable, an outer limit sleeve, a semi-circular track, a landslide, an arc portion, a rotating rod, and a third servo motor. The outer side of the turntable is riveted to the inner wall of the receiving groove through the outer limit sleeve. A semi-circular track is partially arranged on the left end surface of the turntable. A landslide interacting with the sliding rod is arranged in the semi-circular track. One end of the landslide is provided with an arc portion. A rotating rod is horizontally welded in the middle of the right end surface of the turntable. The rotating rod is connected to the third servo motor through a coupling. The third servo motor is horizontally fixed inside the rotating table.

[0020] As a preferred embodiment of the mercury-containing wastewater environmental protection treatment device for calcium carbide method PVC of the present invention, three groups of support legs are welded to the lower end of the frame.

[0021] The present invention provides a mercury-containing wastewater environmental protection treatment device for calcium carbide method PVC by improvement. Compared with the prior art, it has the following significant improvements and advantages: A deceleration structure is designed. When the rotating motor is started, the rotating roller drives the elastic deceleration piece to make a slow circular motion. On the one hand, the falling mercury-containing wastewater will randomly collide with the elastic deceleration piece at a high-speed impact force, causing the elastic deceleration piece to deform and then reset, and decelerating the mercury-containing wastewater to avoid the wastewater directly impacting the activated carbon layer and reducing the adsorption effect. On the other hand, the elastic deceleration piece is located in the strip-shaped groove to stir the activated carbon particles in the groove to prevent them from blocking at the material outlet, effectively controlling the feeding amount.

[0022] When the first servo motor is started, through a series of transmissions, a plurality of groups of activated carbon adsorbers based on the liquid inlet pipe synchronously make a high-speed rotational motion. The internal waste activated carbon particles make a centrifugal motion and are randomly thrown out from the centrifugal material outlet, achieving the effect of automatic discharging, which is time-saving and labor-saving. Multiple activated carbon adsorbers are refilled simultaneously, significantly improving the refilling efficiency.

[0023] When the air pump is started, the annular pressing airbag is inflated, so that a plurality of groups of convex telescopic parts synchronously expand and extend inward, generating a uniform pressing force on the resin adsorption skeleton (flexible pressing, with a protective effect). On the one hand, it reduces the gap between adjacent resin particles inside the skeleton. On the other hand, it reduces the pore size inside a single group of resin particles, which can increase the adsorption strength and improve the resin adsorption rate. When the pressure relief valve is opened, the gas inside the annular pressing airbag is released, and the pressing force on the resin adsorption skeleton disappears. The resin particles obtain the space to adjust their positions and directions, and their mobility is enhanced. Thus, the resin particles can make full use of their pores, improve the absorption rate, and extend the time to enter the saturated state.

[0024] Start the third servo motor. The rotating rod drives the turntable to rotate one week, so that the sliding rod contacts the landslide, and the extrusion force generated between the two causes the bending joint pipe and the resin adsorption cylinder to move leftward along the storage groove, compressing several groups of connecting springs. When the sliding rod leaves the semi-circular track, the extrusion force disappears. During the rightward return process of the corrugated expansion pipe, the performance of the inertial movement of the flexible metal material is utilized to form multiple non-linear fluctuations, so that the acid solution in the resin adsorption flow channel is fully oscillated, increasing the contact time and contact area with the resin particles, thereby improving the elution effect, saving the amount of acid solution, and having a higher oscillation sensitivity compared with the prior art. Description of the Drawings

[0025] Figure 1 It is a schematic diagram of the overall structure of an environmental protection treatment device for mercury-containing wastewater in calcium carbide method PVC of the present invention in one direction; Figure 2 It is a schematic diagram of the overall structure of an environmental protection treatment device for mercury-containing wastewater in calcium carbide method PVC of the present invention in another direction; Figure 3 It is a schematic diagram of the external structure of the activated carbon adsorption cylinder of the present invention from a top view perspective; Figure 4 It is a schematic diagram of the external structure of the activated carbon adsorption cylinder of the present invention from a bottom view perspective; Figure 5 It is a cross-sectional view of the activated carbon adsorption cylinder of the present invention; Figure 6 It is a connection schematic diagram of the activated carbon adsorber of the present invention; Figure 7 It is a schematic diagram of the transmission structure of the pusher of the present invention; Figure 8 It is a specific structure schematic diagram of the pusher of the present invention; Figure 9 It is a specific structure schematic diagram of the speed reduction structure of the present invention; Figure 10 It is a schematic diagram of the external structure of the rotating table of the present invention; Figure 11 It is a schematic diagram of the external structure of the resin adsorption cylinder of the present invention; Figure 12 It is a cross-sectional view of the resin adsorption cylinder of the present invention; Figure 13 It is a schematic diagram of the structures of the acid solution tank and the water supply tank of the present invention; Figure 14 It is a connection schematic diagram of the resin adsorption cylinder in the second embodiment of the present invention; Figure 15 It is a schematic diagram of the structure of the oscillator drive structure of the present invention in one direction; Figure 16 It is a schematic diagram of the structure of the oscillator drive structure of the present invention in another direction.

[0026] In the figure: 1, frame; 2, activated carbon adsorption cylinder; 3, positioning seat; 4, rotating table; 5, waste slot; 6, opening; 7, current collector cover; 8, storage groove; 10, liquid inlet hopper; 11, liquid inlet pipe; 12, inner cavity; 13, material guiding inclined plate; 14, discharge port; 15, discharge pipe; 16, activated carbon adsorber; 17, adsorption chamber; 18, centrifugal material outlet; 19, curved retaining seat; 20, diversion pipe; 21, inner bearing; 22, liquid outlet pipe; 23, positioning bearing seat; 24, large gear; 25, small gear; 26, first servo motor; 30, feeding seat; 31, activated carbon feeding hopper; 32, outer housing; 33, long shaft; 34, first bearing seat; 35, second servo motor; 36, cam; 40, pusher; 41, wheel table; 42, pulley; 43, push rod; 44, positioning partition; 45, return spring; 46, push material sealing plate; 47, deceleration structure; 471, rotating motor; 472, rotating roller; 473, outer roller bearing; 474, elastic deceleration piece; 475, liquid leakage hole; 50, resin adsorption cylinder; 51, bent joint pipe; 52, resin adsorption flow channel; 53, check valve; 54, liquid discharge port; 55, liquid discharge pipe; 60, annular installation groove; 61, annular pressing air bag; 62, convex surface expansion part; 63, resin adsorption framework; 64, air pump; 65, pressure relief valve; 70, acid liquid tank; 71, acid liquid pipe; 72, clear water tank; 73, water supply pipe; 80, corrugated expansion pipe; 81, connecting spring; 82, sliding rod; 90, oscillator driving structure; 91, turntable; 92, outer limit sleeve; 93, semi-circular track; 94, landslide; 95, arc part; 96, rotating rod; 97, third servo motor. Specific embodiments

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention. Embodiment 1

[0028] As Figures 1-13As shown in the figure, this embodiment provides an environmental protection treatment device for mercury-containing wastewater in calcium carbide method PVC production, which includes a frame 1. Three support legs are welded to the lower end of the frame 1 to play a supporting role. An activated carbon adsorption cylinder 2 is vertically installed at the left position inside the frame 1. A liquid inlet hopper 10 is arranged at the top of the activated carbon adsorption cylinder 2. A liquid inlet pipe 11 is connected to the lower end of the liquid inlet hopper 10. The liquid inlet pipe 11 extends downward into the inside of the activated carbon adsorption cylinder 2. A number of inner cavities 12 are longitudinally and equidistantly arranged inside the activated carbon adsorption cylinder 2. Adjacent inner cavities 12 are separated by a guiding inclined plate 13. The guiding inclined plate 13 is of a slope structure for centralized discharging to one side. The guiding inclined plate 13 is riveted to the inner wall of the activated carbon adsorption cylinder 2. A discharge port 14 is arranged at the lowest point of the guiding inclined plate 13. A discharge pipe 15 connected to the inner cavity 12 is installed at the bottom of the activated carbon adsorption cylinder 2.

[0029] Among them, an activated carbon adsorber 16 is rotatably arranged in the middle of each group of inner cavities 12. A curved retaining seat 19 acting on the activated carbon adsorber 16 is arranged on the left side of the inner cavity 12. The curved retaining seat 19 plays a limiting role. An adsorption chamber 17 is arranged inside the activated carbon adsorber 16. An activated carbon carrier is fixedly arranged at the bottom of the adsorption chamber 17. Activated carbon particles are laid on the upper end of the activated carbon carrier. A centrifugal material port 18 connected to the adsorption chamber 17 is arranged on the side surface of the activated carbon adsorber 16. The height and size of the centrifugal material port 18 are determined according to the actual situation, such as Figure 5 and Figure 6 shown.

[0030] Furthermore, adjacent activated carbon adsorbers 16 are connected by a diversion pipe 20. An inner bearing 21 is sleeved at the position where the diversion pipe 20 contacts the guiding inclined plate 13, such as Figure 5 and Figure 6 shown.

[0031] Among them, the uppermost group of activated carbon adsorbers 16 is connected to the liquid inlet pipe 11, such as Figure 3 and Figure 6 shown.

[0032] Among them, the lowermost group of activated carbon adsorbers 16 is connected to a liquid outlet pipe 22. The liquid outlet pipe 22 penetrates through the lower end surface of the activated carbon adsorption cylinder 2. Positioning bearing seats 23 are arranged at the positions where the liquid inlet pipe 11 and the liquid outlet pipe 22 contact the activated carbon adsorption cylinder 2 respectively. The liquid inlet pipe 11 and the liquid outlet pipe 22 rotate around the positioning bearing seats 23 respectively, such as Figures 4-6 shown.

[0033] In this embodiment, a large gear 24 is sleeved in the middle of the liquid inlet pipe 11. A small gear 25 is meshed on one side of the large gear 24. The small gear 25 is sleeved on the output shaft of a first servo motor 26. The first servo motor 26 penetrates through the upper end surface of the activated carbon adsorption cylinder 2, such as Figure 6 shown.

[0034] Further, a number of groups of feeding seats 30 are longitudinally arranged at equal intervals on the left side surface of the activated carbon adsorption cylinder 2. A strip-shaped material groove is formed inside each group of feeding seats 30. An activated carbon feeding hopper 31 is installed at the upper end of each group of feeding seats 30. The activated carbon feeding hopper 31 is communicated with the strip-shaped material groove. A discharge valve is installed at the bottom of the activated carbon feeding hopper 31. The left end of the feeding seat 30 is vertically welded with an outer shell 32, as Figure 3 and Figure 4 shown.

[0035] Among them, a long shaft 33 is vertically and rotatably arranged inside the outer shell 32. The upper and lower ends of the long shaft 33 are connected to the shell wall of the outer shell 32 through first bearing seats 34. The long shaft 33 extends upward and is connected with a second servo motor 35 through a coupling. The second servo motor 35 penetrates through the upper end surface of the outer shell 32. Cams 36 are respectively sleeved on the long shaft 33 corresponding to the positions of each group of feeding seats 30, as Figure 7 shown.

[0036] Further, a pusher 40 that acts on the cam 36 is arranged inside each group of feeding seats 30, as Figure 7 shown.

[0037] Specifically, the pusher 40 includes a wheel platform 41, a pulley 42, a push rod 43, a positioning partition 44, a return spring 45 and a push material sealing plate 46, as Figure 8 shown.

[0038] In this embodiment, a pulley 42 is rotatably arranged inside the wheel platform 41. A part of the pulley 42 protrudes from the left end surface of the wheel platform 41 and contacts the cam surface of the cam 36. A push rod 43 is horizontally welded to the right end surface of the wheel platform 41. A positioning partition 44 through which the push rod 43 passes is riveted in the middle of the strip-shaped material groove. A return spring 45 sleeved on the outer side of the push rod 43 is fixed between the wheel platform 41 and the positioning partition 44. The return spring 45 is used to maintain the contact force between the cam 36 and the pulley 42.

[0039] In this embodiment, the right end of the push rod 43 is connected with a push material sealing plate 46. The push material sealing plate 46 moves along the wall in the strip-shaped material groove and finally passes through the curved retaining seat 19 to block the centrifugal material outlet 18.

[0040] Among them, a deceleration structure 47 is arranged inside the push rod 43 and extends outside the push material sealing plate 46. The acting objects of the deceleration structure 47 are respectively mercury-containing wastewater and activated carbon particles, as Figure 8 shown.

[0041] Specifically, the deceleration structure 47 includes a rotating motor 471, a rotating roller 472, a roller outer bearing 473, an elastic deceleration piece 474 and a liquid leakage hole 475, as Figure 9 shown.

[0042] In this embodiment, the rotary motor 471 is horizontally installed inside the push rod 43. The output end of the rotary motor 471 is connected to a rotary roller 472. The rotary roller 472 is connected to the inside of the material pushing sealing plate 46 by means of an outer roller bearing 473. A number of groups of elastic deceleration sheets 474 are evenly welded on the end of the rotary roller 472 extending out of the material pushing sealing plate 46, which has the characteristic of deformation and reset. A number of groups of liquid leakage holes 475 are evenly opened on each group of elastic deceleration sheets 474, and the liquid leakage holes 475 play a role in guiding liquid.

[0043] Further, a positioning seat 3 is provided below the frame 1. A rotary table 4 is rotatably arranged upward inside the positioning seat 3. A waste material groove 5 is opened in the middle position of the upper end surface of the rotary table 4. The lower end of the discharge pipe 15 is located directly above the waste material groove 5. One or two groups of storage grooves 8 are opened inside the rotary table 4. An opening 6 communicating with one end of the storage groove 8 is opened on the upper end surface of the rotary table 4. The opening 6 is located directly below the liquid outlet pipe 22. A flow collecting cover 7 is arranged outside the opening 6, and the flow collecting cover 7 plays a role in blocking liquid to prevent overflow during liquid injection, as Figure 1 、 Figure 2 and Figure 10 shown.

[0044] Among them, a resin adsorption cylinder 50 is horizontally arranged inside the storage groove 8. One end of the resin adsorption cylinder 50 close to the opening 6 is connected to a bent joint pipe 51. A resin adsorption flow channel 52 is opened inside the resin adsorption cylinder 50. A one-way valve 53 is installed at one end of the resin adsorption flow channel 52 far from the bent joint pipe 51. A liquid discharge port 54 is opened at the bottom of the resin adsorption cylinder 50 near the one-way valve 53. A liquid discharge pipe 55 corresponding to the liquid discharge port 54 is installed at the edge position of the rotary table 4, as Figure 11 and Figure 12 shown.

[0045] In this embodiment, two groups of annular installation grooves 60 are opened on the inner wall of the resin adsorption cylinder 50. An annular pressing airbag 61 is fixedly installed inside each group of annular installation grooves 60. A resin adsorption framework 63 is installed inside the annular pressing airbag 61. The resin adsorption framework 63 is made of an elastic material, and a number of groups of resin particles are filled inside the resin adsorption framework 63, as Figure 12 shown.

[0046] In this embodiment, a number of groups of convex surface telescopic parts 62 acting on the resin adsorption framework 63 are evenly distributed on the inner side surface of the annular pressing airbag 61. The convex surface telescopic parts 62 are made of rubber material and have the characteristic of deformation and reset. An air pump 64 and a pressure relief valve 65 are installed on the annular pressing airbag 61. Both the air pump 64 and the pressure relief valve 65 pass through the upper end surface of the resin adsorption cylinder 50, as Figure 11 and Figure 12 shown.

[0047] Further, an acid solution tank 70 is vertically installed at the right position inside the frame 1. A bottom of the acid solution tank 70 is communicated with an acid solution pipe 71. A first electromagnetic valve is arranged at an upper end of the acid solution pipe 71, as Figure 2 and 13 shown.

[0048] Further, a water tank 72 is connected to one side of the acid solution tank 70. A water supply pipe 73 extending toward the position of the acid solution pipe 71 is installed at a bottom of the water tank 72. A second electromagnetic valve is arranged at an upper end of the water supply pipe 73. A water pipe is further arranged on the water tank 72 and extends toward the liquid inlet hopper 10, as Figure 2 and 13 shown.

[0049] When in use in this embodiment, the mercury-containing wastewater is continuously introduced into the liquid inlet hopper 10, slowly flows from the liquid inlet hopper 10 into the liquid inlet pipe 11, and is injected into the adsorption chamber 17 of the activated carbon adsorber 16 from the lower end of the liquid inlet pipe 11. At this time, the rotary motor 471 is started, and the rotary roller 472 drives the elastic deceleration piece 474 to perform a slow circular motion. The falling mercury-containing wastewater will randomly collide with the elastic deceleration piece 474 at a relatively high speed impact force, causing the elastic deceleration piece 474 to deform and then reset, and decelerating the mercury-containing wastewater. The decelerated mercury-containing wastewater converges on the activated carbon carrier in the adsorption chamber 17, and the impurities and some mercury-containing compounds in the water are adsorbed by the activated carbon particles.

[0050] Then, the mercury-containing wastewater is introduced into the lower activated carbon adsorber 16 by the diversion pipe 20, and the above operations are repeated for multiple adsorptions. Finally, the mercury-containing wastewater is injected into the opening 6 directly below through the liquid outlet pipe 22, and smoothly enters the resin adsorption channel 52 through the bending joint pipe 51. The mercury-containing wastewater flows horizontally from right to left, and will sequentially pass through two groups of resin adsorption skeletons 63 and come into full contact with several groups of resin particles. The mercury ions therein form chelates with the resin and are adsorbed on the chelating resin particles, thereby realizing the separation of mercury ions and mercury-containing compounds in the wastewater. Then, the treated wastewater is directly collected into the drain pipe 55 through the drain port 54 and exported outwards.

[0051] During the process of wastewater entering the resin adsorption framework 63, start the air pump 64 to inflate the annular pressing airbag 61, causing it to bulge, and synchronously expand and extend several groups of convex surface telescopic parts 62 to generate a uniform squeezing force on the resin adsorption framework 63. On the one hand, it reduces the gap between adjacent resin particles inside the framework, and on the other hand, it reduces the pore size inside a single group of resin particles, which can increase the adsorption strength and improve the resin adsorption rate. Then open the pressure relief valve 65 to release the gas inside the annular pressing airbag 61, and the squeezing force on the resin adsorption framework 63 disappears. The resin adsorption framework 63 resets, and the resin particles obtain space to adjust their positions and directions, so that the resin particles can make full use of their pores, improve the absorption rate, and extend the time to reach the saturated state. This cycle continues.

[0052] When the absorption capacity of the resin particles reaches saturation, drive the rotating table 4 to rotate by the motor structure inside the positioning seat 3, so that the opening 6 moves to directly below the acid liquid pipe 71 through circular motion. Open the first solenoid valve, supply acid liquid through the acid liquid tank 70, inject it into the resin adsorption flow channel 52 through the acid liquid pipe 71, and use the acid liquid flowing through the resin adsorption framework 63 to elute the chelating resin particles inside it, thereby removing the mercury ions on the resin particles and restoring their absorption performance. The mercury-containing acid liquid is exported outward from the drain pipe 55. Then open the second solenoid valve, supply clean water through the clean water tank 72, first flow into the acid liquid pipe 71 through the water supply pipe 73 to clean it, and then the clean water enters the resin adsorption flow channel 52 downward. Use a large amount of clean water flowing through the resin adsorption framework 63 to clean the residual acid liquid inside it, avoiding the residual acid liquid from polluting the wastewater. The acid-containing clean water is exported outward from the drain pipe 55.

[0053] When it is necessary to replace the activated carbon particles in the adsorption chamber 17, first start the second servo motor 35, the long shaft 33 rotates, causing several groups of cams 36 to rotate accordingly, and respectively making the convex parts of the cams 36 in contact with the pulley 42 surfaces of the pusher 40 slowly move away. Under the elastic force of the return spring 45, the push rod 43 drives the push-sealing plate 46 to retract from the centrifugal material outlet 18 into the curved seat 19. At this time, start the first servo motor 26 to drive the small gear 25 to rotate, and through meshing, cause the large gear 24 to rotate, so that several groups of activated carbon adsorbers 16 based on the liquid inlet pipe 11 synchronously perform high-speed rotational motion, causing the waste activated carbon particles inside them to perform centrifugal motion, rise to the middle height of the adsorption chamber 17 and move along the wall, and thus are randomly thrown out from the centrifugal material outlet 18, enter the inner cavity 12, fall onto the guide inclined plate 13 and slide, and fall downward from the discharge port 14, and finally are injected into the waste material tank 5 through the discharge pipe 15 for centralized collection.

[0054] After the waste activated carbon particles are exhausted, the water tank 72 supplies water. The clear water is injected into the liquid inlet hopper 10 from the top water pipe, flows downward to wash each group of activated carbon adsorbers 16, and then the push rod 43 drives the push material sealing plate 46 to retreat from the curved seat 19 to the strip-shaped trough. At this time, some of the activated carbon particles in the activated carbon feeding hopper 31 will be injected downward to the right side of the push material sealing plate 46 in the strip-shaped trough. During the feeding process, the rotating roller 472 drives the elastic deceleration piece 474 to move again to stir the activated carbon particles in the trough to prevent them from blocking at the material outlet. Then, during the movement of the cam 36, the convex part contacts the pulley 42, and the push rod 43 drives the push material sealing plate 46 to move linearly from the strip-shaped trough into the centrifugal material outlet 18, pushing the activated carbon particles in the trough into the corresponding activated carbon adsorber 16 to achieve automatic feeding. Embodiment 2

[0055] Based on Embodiment 1, when eluting the resin particles with acid solution, the acid solution only flows or flushes, with a short contact time and a small contact area with the resin particles, which easily leads to poor elution effect. Further increasing the dosage of the acid solution will increase the usage cost. To solve the above technical problems, we have the following design, as Figures 14-16 shown.

[0056] Specifically, the resin adsorption cylinder 50 is movably arranged in the storage groove 8. The cross-section of the storage groove 8 is slightly larger than that of the resin adsorption cylinder 50. The middle part of the resin adsorption cylinder 50 is divided into two by a corrugated expansion pipe 80. The left end of the resin adsorption cylinder 50 is fixed to the groove wall of the storage groove 8 by several groups of connecting springs 81, as Figure 14 shown.

[0057] Further, a sliding rod 82 is horizontally welded to the right end of the bent joint pipe 51, and an oscillator driving structure 90 is arranged at the right end of the sliding rod 82, as Figure 14 shown.

[0058] Specifically, the oscillator driving structure 90 includes a turntable 91, an outer limit sleeve 92, a semi-circular track 93, a landslide 94, an arc part 95, a rotating rod 96 and a third servo motor 97, as Figure 15 and Figure 16 shown.

[0059] In this embodiment, the outer side of the turntable 91 is riveted to the inner wall of the receiving groove 8 through the outer limiting sleeve 92. The turntable 91 rotates around the outer limiting sleeve 92. A semi-circular track 93 is partially provided on the left end face of the turntable 91. A landslide 94 that interacts with the sliding rod 82 is provided in the semi-circular track 93. An arc portion 95 is provided at one end of the landslide 94. When the sliding rod 82 is not on the semi-circular track 93, it moves freely with non-linear fluctuations. A rotating rod 96 is horizontally welded at the middle position of the right end face of the turntable 91. The rotating rod 96 is connected to the third servo motor 97 through a coupling. The third servo motor 97 is horizontally fixed inside the rotating table 4.

[0060] When this embodiment is in use, the one-way valve 53 is closed, and a large amount of acid solution is injected into the resin adsorption flow channel 52 (more than half of the total volume of the flow channel). At this time, the third servo motor 97 is started, and the rotating rod 96 drives the turntable 91 to rotate one week, so that the sliding rod 82 first enters the semi-circular track 93 and contacts the landslide 94. As the slope rises, the two generate an extrusion force, causing the bending joint pipe 51 and the resin adsorption cylinder 50 to move leftward along the receiving groove 8. While several groups of connecting springs 81 are compressed, the middle corrugated telescopic pipe 80 is also compressed accordingly. When the sliding rod 82 leaves the semi-circular track 93, the extrusion force disappears, and the connecting spring 81 generates a reset force to drive the bending joint pipe 51 and the resin adsorption cylinder 50 to return to the right. During the rightward return process of the corrugated telescopic pipe 80, by utilizing the inertial movement performance of the flexible metal material, multiple non-linear fluctuations are formed (the fluctuation amplitude gradually decreases with the increase of the number of times until it returns to the original state), so that the acid solution in the resin adsorption flow channel 52 is fully oscillated, increasing the contact time and contact area with the resin particles, reducing the stability of the chelate, thereby improving the elution effect. Then, the one-way valve 53 is opened to release the eluent.

[0061] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0062] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An environmentally friendly treatment device for mercury-containing wastewater from PVC produced by the calcium carbide process, comprising a frame (1), characterized in that: An activated carbon adsorption cylinder (2) is vertically installed at the left position inside the frame (1), a liquid inlet hopper (10) is arranged on the top of the activated carbon adsorption cylinder (2), and a liquid inlet pipe (11) is arranged at the lower end of the liquid inlet hopper (10), and a plurality of groups of inner cavities (12) are longitudinally equidistantly provided inside the activated carbon adsorption cylinder (2), and adjacent inner cavities (12) are separated by a material guide inclined plate (13), and a discharge port (14) is arranged at the lowest point of the material guide inclined plate (13), and an activated carbon adsorber (16) is rotatably provided in the middle of each group of inner cavities (12); A curved stopper (19) for acting on the activated carbon adsorber (16) is arranged on the left side of the inner cavity (12); an adsorption chamber (17) is arranged inside the activated carbon adsorber (16); a centrifugal material port (18) communicating with the adsorption chamber (17) is provided on the side of the activated carbon adsorber (16); adjacent activated carbon adsorbers (16) are connected by a flow guide pipe (20); the uppermost group of activated carbon adsorbers (16) is connected to a liquid inlet pipe (11); a large gear (24) is sleeved on the middle of the liquid inlet pipe (11); A plurality of groups of feed seats (30) are longitudinally arranged at equal intervals on the left side of the activated carbon adsorption cylinder (2), and a pusher (40) that interacts with the cam (36) is arranged inside each group of the feed seats (30). The pusher (40) includes a pusher sealing plate (46). The pusher sealing plate (46) moves along the wall in the strip trough and finally passes through the curved stop seat (19) to seal the centrifugal material port (18). A deceleration structure (47) is arranged inside the push rod (43) and extends out of the pusher sealing plate (46).

2. The environmental protection treatment device for mercury-containing wastewater from calcium carbide-processed PVC according to claim 1, characterized in that: The liquid inlet pipe (11) extends downward into the interior of the activated carbon adsorption cylinder (2), the material guide inclined plate (13) is riveted to the inner wall of the activated carbon adsorption cylinder (2), and a discharge pipe (15) connected to the inner cavity (12) is installed at the bottom of the activated carbon adsorption cylinder (2); An activated carbon carrier is fixedly arranged at the bottom of the adsorption chamber (17), and activated carbon particles are laid on the upper end of the activated carbon carrier. An inner bearing (21) is sleeved at the position where the guide pipe (20) contacts the guide inclined plate (13). The lowermost group of the activated carbon adsorber (16) is connected to the liquid outlet pipe (22), and positioning bearing seats (23) are arranged at the positions where the liquid inlet pipe (11) and the liquid outlet pipe (22) contact the activated carbon adsorption cylinder (2).

3. The environmental protection treatment device for mercury-containing wastewater from calcium carbide-processed PVC according to claim 2 is characterized in that: A small gear (25) is meshed with one side of the large gear (24), and the small gear (25) is sleeved on the output shaft of a first servo motor (26), and the first servo motor (26) is arranged to penetrate the upper end surface of the activated carbon adsorption cylinder (2); An acid liquid tank (70) is vertically installed at the right position inside the frame (1); an acid liquid pipe (71) is arranged at the bottom of the acid liquid tank (70); a first solenoid valve is arranged at the upper end of the acid liquid pipe (71); a clean water tank (72) is connected to one side of the acid liquid tank (70); a water supply pipe (73) is installed at the bottom of the clean water tank (72) extending toward the position of the acid liquid pipe (71); and a second solenoid valve is arranged at the upper end of the water supply pipe (73).

4. The environmental protection treatment device for mercury-containing wastewater from calcium carbide-processed PVC according to claim 3 is characterized by: Each group of the feed seats (30) is provided with a strip-shaped material trough inside, and an activated carbon supply hopper (31) is installed at the upper end of each group of the feed seats (30), the activated carbon supply hopper (31) and the strip-shaped material trough are connected, and an outer shell (32) is vertically welded to the left end of the feed seat (30); A long shaft (33) is vertically rotatably arranged inside the outer shell (32), and the long shaft (33) extends upwards and is connected to a second servo motor (35) through a coupling. The second servo motor (35) is arranged to penetrate the upper end surface of the outer shell (32), and a cam (36) is respectively sleeved on the long shaft (33) at a position corresponding to each group of feed seats (30).

5. The environmental protection treatment device for mercury-containing wastewater from PVC produced by the calcium carbide process according to claim 4 is characterized by: The pusher (40) further comprises a wheel platform (41), a pulley (42), a push rod (43), a positioning baffle (44) and a return spring (45); the pulley (42) is rotatably arranged inside the wheel platform (41); a portion of the pulley (42) extends out of the left end face of the wheel platform (41) and contacts the wheel surface of the cam (36); a push rod (43) is horizontally welded to the right end face of the wheel platform (41); a positioning baffle (44) for the push rod (43) to pass through is riveted to the middle of the strip trough; a return spring (45) sleeved on the outside of the push rod (43) is fixed between the wheel platform (41) and the positioning baffle (44); a pusher sealing plate (46) is connected to the right end of the push rod (43); and the deceleration structure (47) acts on the mercury-containing wastewater and the activated carbon particles, respectively.

6. The environmental protection treatment device for mercury-containing wastewater from PVC produced by the calcium carbide process according to claim 5 is characterized by: The deceleration structure (47) comprises a rotating motor (471), a rotating roller (472), a roller outer bearing (473), an elastic deceleration plate (474) and a leakage hole (475); the rotating motor (471) is horizontally installed inside the push rod (43); the output end of the rotating motor (471) is connected to the rotating roller (472); the rotating roller (472) is connected to the inside of the push material sealing plate (46) by means of the roller outer bearing (473); a plurality of groups of elastic deceleration plates (474) are uniformly welded to the end of the rotating roller (472) extending out of the push material sealing plate (46); and each group of the elastic deceleration plates (474) is uniformly provided with a plurality of groups of leakage holes (475).

7. The environmental protection treatment device for mercury-containing wastewater from PVC produced by the calcium carbide process according to claim 6 is characterized by: A positioning seat (3) is arranged below the frame (1), a rotating table (4) is arranged inside the positioning seat (3) and is rotatably arranged upward, a waste trough (5) is provided in the middle of the upper end surface of the rotating table (4), the lower end of the discharge pipe (15) is located directly above the waste trough (5), a receiving groove (8) is provided inside the rotating table (4), an opening (6) connected to one end of the receiving groove (8) is provided on the upper end surface of the rotating table (4), and the opening (6) is located directly below the liquid outlet pipe (22); A resin adsorption cylinder (50) is horizontally arranged inside the storage tank (8); one end of the resin adsorption cylinder (50) close to the opening (6) is connected to a bent joint pipe (51); a resin adsorption flow channel (52) is provided inside the resin adsorption cylinder (50); a one-way valve (53) is installed at one end of the resin adsorption flow channel (52) away from the bent joint pipe (51); a drainage port (54) is provided at the bottom of the resin adsorption cylinder (50) near the one-way valve (53); and a drainage pipe (55) corresponding to the drainage port (54) is installed at the edge of the rotating table (4).

8. The environmental protection treatment device for mercury-containing wastewater from PVC produced by the calcium carbide process according to claim 7 is characterized by: Two groups of annular mounting grooves (60) are provided on the inner wall of the resin adsorption cylinder (50), and an annular compression airbag (61) is fixedly installed inside each group of the annular mounting grooves (60), and a resin adsorption skeleton (63) is installed inside the annular compression airbag (61), and a plurality of groups of resin particles are movably arranged inside the resin adsorption skeleton (63). A plurality of groups of convex telescopic parts (62) acting on the resin adsorption skeleton (63) are evenly distributed on the inner side surface of the annular compression airbag (61), and an air pump (64) and a pressure relief valve (65) are installed on the annular compression airbag (61), and the air pump (64) and the pressure relief valve (65) are both arranged through the upper end surface of the resin adsorption cylinder (50).

9. The environmental protection treatment device for mercury-containing wastewater from PVC produced by the calcium carbide process according to claim 8 is characterized by: The resin adsorption cylinder (50) is movably arranged in the storage groove (8), the cross-section of the storage groove (8) is slightly larger than the cross-section of the resin adsorption cylinder (50), the middle part of the resin adsorption cylinder (50) is divided into two parts by a corrugated telescopic tube (80), the left end of the resin adsorption cylinder (50) is fixed by a plurality of groups of connecting springs (81) and the groove wall of the storage groove (8), the right end of the bent joint tube (51) is horizontally welded with a sliding rod (82), and the right end of the sliding rod (82) is provided with an oscillator driving structure (90).

10. The environmental protection treatment device for mercury-containing wastewater from PVC produced by the calcium carbide process according to claim 9, characterized in that: The oscillator driving structure (90) comprises a turntable (91), an outer limit sleeve (92), a semicircular track (93), a slide (94), an arc portion (95), a rotating rod (96) and a third servo motor (97); the outer side of the turntable (91) is riveted to the inner wall of the storage groove (8) through the outer limit sleeve (92); a semicircular track (93) is partially provided on the left end surface of the turntable (91); a slide (94) that interacts with the slide rod (82) is provided inside the semicircular track (93); an arc portion (95) is provided at one end of the slide (94); a rotating rod (96) is horizontally welded at the middle position of the right end surface of the turntable (91); and the rotating rod (96) is connected to the third servo motor (97) via a coupling.

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