Coal tar deep processing wastewater treatment device

Abstract

The invention relates to the technical field of wastewater treatment, and particularly provides a coal tar deep processing wastewater treatment device which comprises four RO (reverse osmosis) membrane assemblies and two water tanks which are sequentially arranged from top to bottom, two ends of each RO membrane assembly are respectively communicated with the two water tanks, and an opening and closing adjusting mechanism is mounted on each water tank. Through cooperation of the screw rod, the rotating cylinder, the single-abutting plugging group and the multi-stage adjusting group, not only can the ports at the two ends of each RO membrane assembly be independently controlled to be closed, but also the two ends of two or three RO membrane assemblies can be controlled to be closed according to the change of requirements, so that wastewater can be continuously treated; the wastewater treatment efficiency and the operation flexibility of the wastewater treatment device when the RO membrane assemblies are cleaned are improved, when the treatment device is not used, the multi-stage adjusting set can close the two ends of the four RO membrane assemblies at the same time, and the flexibility and the multifunctionality of the whole treatment device adjusted and used according to the coal tar wastewater flow are improved.

Description

Technical Field

[0001] The invention relates to the technical field of wastewater treatment, and specifically proposes a coal tar deep processing wastewater treatment device. Background Art

[0002] RO reverse osmosis is a membrane separation technology that uses the selective permeability of a semipermeable membrane to allow water molecules to pass through the membrane under the action of applied pressure while blocking most soluble solutes (such as salt, organic matter, etc.); for coal tar deep processing wastewater, RO reverse osmosis can effectively reduce the conductivity of the wastewater and reduce the content of harmful substances therein, but before RO reverse osmosis, the coal tar deep processing wastewater usually needs to be pretreated to remove suspended matter, fine particles, grease and other large molecular organic matter that may cause RO membrane blockage, damage or contamination.

[0003] With the continuous operation of the RO reverse osmosis system, various impurities in the pre-treated coal tar deep processing wastewater will gradually deposit on the surface of the RO reverse osmosis membrane to form scale; these scales include inorganic salts (such as calcium, magnesium, iron, etc.), organic matter, microorganisms and their metabolites, etc. If the RO reverse osmosis membrane components are not cleaned in time, it will cause defects such as decreased membrane flux, reduced desalination efficiency, increased operating pressure, and shortened membrane life.

[0004] When cleaning multiple RO reverse osmosis membrane modules, traditional wastewater treatment devices either directly close the total wastewater inlet and total clean water outlet of multiple RO reverse osmosis membrane modules, and then use backwashing equipment to clean multiple RO reverse osmosis membrane modules at the same time, or use a single valve to control the on and off of each RO reverse osmosis membrane module end. The former will result in the RO reverse osmosis membrane module being unable to treat wastewater during the cleaning process, and the wastewater treatment process needs to be carried out intermittently, reducing the efficiency of wastewater treatment and the flexibility of use; the latter is more complicated to operate. When closing two, three or all RO reverse osmosis membrane modules, multiple valves need to be closed. Due to the large number of valves, misoperation is prone to occur, resulting in the wastewater inlet or clean water outlet at both ends of the RO reverse osmosis membrane module being opened during the cleaning process, thereby affecting the cleaning effect of the RO reverse osmosis membrane module. Summary of the invention

[0005] In view of the above problems, an embodiment of the present application provides a coal tar deep processing wastewater treatment device to solve the technical problems in the related art.

[0006] In order to achieve the above-mentioned purpose, the embodiment of the present application provides the following technical solutions: a coal tar deep processing wastewater treatment device, comprising: four RO reverse osmosis membrane modules arranged in sequence from top to bottom, the RO reverse osmosis membrane modules are provided with a backwash drain outlet, a backwash water inlet and a waste liquid outlet; one end of the RO reverse osmosis membrane module is a clean water outlet, and the other end is a waste water inlet, the side wall of the RO reverse osmosis membrane module at one end close to the clean water outlet thereon is provided with a backwash drain outlet, the side wall of the RO reverse osmosis membrane module at one end close to the waste water inlet thereon is provided with a backwash water inlet, and the side wall of the RO reverse osmosis membrane module at one side close to the backwash water inlet is also provided with a waste liquid outlet.

[0007] The coal tar deep processing wastewater treatment device also includes two water tanks. The two ends of the RO reverse osmosis membrane assembly are respectively connected to the two water tanks. An opening and closing regulating mechanism is installed on the water tank. The two opening and closing regulating mechanisms have the same structure and are symmetrically arranged along the axial direction of the RO reverse osmosis membrane assembly.

[0008] The opening and closing adjustment mechanism includes four fixing frames installed between two inner walls of the water tank arranged along the width direction thereof, the four fixing frames are arranged in sequence from top to bottom, a plug rod corresponding to the end of the RO reverse osmosis membrane assembly is slidably connected to the fixing frame, a blocking ball for blocking the end of the RO reverse osmosis membrane assembly is installed at the end of the plug rod, an elastic reset member is installed between the plug rod and the fixing frame, a ball is rollingly connected to the end of the plug rod away from the blocking ball, a screw rod and a rotating cylinder are rotatably connected in the water tank, the rotating cylinder is rotatably sleeved on the screw rod, a limiting guide groove is provided on the side wall of the rotating cylinder, a single-resistance blocking group is installed on the screw rod which moves up and down along the limiting guide groove when the screw rod rotates, and when the single-resistance blocking group moves, it pushes the plug rod in contact with it to drive the corresponding blocking ball to block the corresponding RO reverse osmosis membrane assembly port.

[0009] A multi-stage regulating group is installed on the outer wall of the rotating drum. When the rotating drum rotates, the multi-stage regulating group closes the port of the RO reverse osmosis membrane assembly by pushing the corresponding blocking balls.

[0010] In one possible implementation, the elastic reset member includes a fixed ring fixedly mounted on the insertion rod, a reset spring mounted on the insertion rod is installed between the fixed ring and the fixed frame, and a shrink tube is also installed between the fixed ring and the fixed frame, and the reset spring is located in the shrink tube.

[0011] The water tank is also provided with a latch mechanism for locking the sealing ball that closes the port of the RO reverse osmosis membrane assembly. The latch mechanism comprises a plurality of latch groups and a plurality of sealing covering groups. The sealing covering groups correspond to the latch groups one-to-one, and the corresponding sealing covering groups and latch groups constitute a locking sealing unit. The locking sealing unit corresponds to the sealing ball one-to-one. The latch group is used to insert and lock the sealing ball, and the sealing covering group is used to cover and seal the pressing part between the sealing ball and the port of the RO reverse osmosis membrane assembly. The water tank is also provided with a locking driving group for driving the plurality of latch groups and the plurality of sealing covering groups.

[0012] In one possible implementation, the single-resistance sealing group includes a connecting ring that is slidably connected up and down in a rotating cylinder. The connecting ring is sleeved on the screw and is connected to the screw by threaded cooperation. The outer wall of the connecting ring is equipped with a connecting block that slides along its circumference. The connecting block passes through the limiting guide groove and is equipped with a trapezoidal resistance plate. The upper and lower end surfaces of the trapezoidal resistance plate are both inclined surfaces, and the two inclined surfaces are in an eight-shaped shape with the small mouth end facing the insertion rod.

[0013] In a possible implementation, a sliding block slidably connected to the inner wall of the rotating cylinder is fixedly connected to the upper end of the outer ring wall of the connecting ring, and the connecting block is located below the sliding block.

[0014] In one possible implementation, an observation port is provided on one of the two side walls of the water tank arranged along its width direction, a transparent panel is installed on the observation port, an indicator needle that slides in contact with the transparent panel is installed on the side wall of the trapezoidal abutment plate, and an indicator line that corresponds one-to-one to the axis of the insertion rod is also provided on the side wall of the water tank.

[0015] In one possible implementation, the multi-stage adjustment group includes a secondary closing assembly, a tertiary closing assembly and a full closing assembly installed on the outer wall of the rotating cylinder. The secondary closing assembly, the tertiary closing assembly, the full closing assembly and the limiting guide groove are evenly arranged along the circumference of the rotating cylinder. The secondary closing assembly consists of two arc-shaped wedges; the tertiary closing assembly consists of three arc-shaped wedges, and the full closing assembly consists of four arc-shaped wedges. The arc-shaped wedges in the secondary closing assembly, the tertiary closing assembly and the full closing assembly are aligned with the corresponding plug rods in sequence from top to bottom.

[0016] In one possible implementation, the latch group includes connecting rods symmetrically arranged along the width direction of the water tank, and pressure blocks are installed at the opposite ends of the two connecting rods. The side wall of the sealing ball is provided with an abutment groove, and the side of the pressure block close to the port of the RO reverse osmosis membrane assembly is provided with an inclined surface, and the inner wall of the abutment groove is provided with an inclined surface matching the inclined surface of the pressure block.

[0017] In a possible implementation, the sealing covering group includes mounting strips symmetrically arranged along the width direction of the water tank, and semi-ring clamping plates are installed on opposite surfaces of the two mounting strips, and sealing sheets are installed on the inner ring surfaces of the semi-ring clamping plates.

[0018] In one possible implementation, the locking drive group includes gears that are rotatably connected to the top inner wall and the bottom inner wall of the water tank, and a connecting bar is installed together with a plurality of mounting bars arranged on the same side and from top to bottom and the end of the connecting rod away from the blocking ball. The connecting bar is slidably connected to the water tank, and racks that mesh with the gears are installed on the opposite surfaces of the two connecting bars. The side wall of the water tank is rotatably connected to a locking rotating rod, and the locking rotating rod is connected to one of the connecting bars by threaded cooperation.

[0019] In one possible implementation, after the top of the rotating cylinder rotates and passes through the water tank, gear indicator strips evenly arranged along its circumference are installed. The multiple gear indicator strips correspond one by one to the secondary closing component, the tertiary closing component, the full closing component and the limiting guide groove, and the top of the water tank is also equipped with an alignment line that is aligned parallel to the axis of the insertion rod.

[0020] The above one or more technical solutions in the embodiments of the present invention have at least one of the following beneficial effects: 1. The present invention cooperates with a screw, a rotating cylinder, a single-resistance plugging group and a multi-stage adjustment group, which can not only realize the individual control of the closing of the ports at both ends of each RO reverse osmosis membrane assembly, but also control the closing of both ends of two or three RO reverse osmosis membrane assemblies according to changes in demand, so that wastewater can be continuously treated, the efficiency of wastewater treatment and the operational flexibility of the wastewater treatment device when cleaning the RO reverse osmosis membrane assembly are improved. When the treatment device is not in use, the multi-stage adjustment group can also simultaneously close both ends of four RO reverse osmosis membrane assemblies, thereby improving the convenience of first closing both ends of the RO reverse osmosis membrane assembly and then cleaning it, and improving the flexibility and versatility of the overall treatment device according to the flow adjustment of coal tar wastewater.

[0021] 2. The latch group in the latch mechanism of the present invention presses the sealing ball against the port of the RO reverse osmosis membrane assembly for a second time, and the sealing coating group coats and seals the pressing part between the sealing ball and the port of the RO reverse osmosis membrane assembly, thereby improving the pressing sealing performance between the sealing ball and the port of the RO reverse osmosis membrane assembly and the stability of the sealing position of the sealing ball, thereby preventing the sealing ball from shaking under the impact force of coal tar wastewater, affecting the sealing performance and cleaning effect during cleaning of the RO reverse osmosis membrane assembly.

[0022] 3. In the present invention, the operation of individually controlling the closing of both ends of each RO reverse osmosis membrane assembly and the operation of controlling the closing of both ends of two or more RO reverse osmosis membrane assemblies do not affect each other under the cooperation of the single-resistance plugging group and the rotating drum, thereby improving the convenience of the operation of first double-end plugging and then cleaning the RO reverse osmosis membrane assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0024] Figure 1 It is a schematic diagram of the first overall three-dimensional structure of the present invention.

[0025] Figure 2 It is a second overall three-dimensional structural schematic diagram of the present invention.

[0026] Figure 3 It is a three-dimensional structural schematic diagram of the cooperation between the opening and closing regulating mechanism and the latching mechanism of the present invention.

[0027] Figure 4 It is a three-dimensional structural schematic diagram of the latch mechanism of the present invention.

[0028] Figure 5 It is a three-dimensional structural schematic diagram of the opening and closing regulating mechanism of the present invention.

[0029] Figure 6 It is a structural schematic diagram of the single-resistance plugging group of the present invention.

[0030] Figure 7 It is a top sectional view of the latch assembly and the elastic reset member of the present invention.

[0031] Figure 8 It is a structural schematic diagram of the linkage component 1 and the linkage component 2 of the present invention.

[0032] Reference numerals: 1. RO reverse osmosis membrane assembly; 10. Backwash drain outlet; 11. Backwash water inlet; 12. Waste liquid outlet; 2. Water tank; 20. Observation port; 21. Indicator needle; 22. Indicator line; 3. Opening and closing adjustment mechanism; 30. Fixed frame; 31. Insert rod; 32. Blocking ball; 33. Elastic reset part; 330. Fixed ring; 331. Contraction cylinder; 332. Reset spring; 34. Rotating cylinder; 340. Gear indicator strip; 341. Alignment line; 35. Screw; 36. Limiting guide groove; 37. Single-resistance blocking group; 370, connecting ring; 371, connecting block; 372, trapezoidal abutment plate; 390, sliding block; 38, multi-stage adjustment group; 380, secondary closing assembly; 381, tertiary closing assembly; 382, ​​full closing assembly; 4, latch mechanism; 41, latch group; 410, connecting rod; 411, abutment block; 412, abutment groove; 42, sealing covering group; 420, mounting strip; 421, semi-ring clamping plate; 43, locking drive group; 430, gear; 431, connecting strip; 432, rack; 433, locking rotating rod. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] In order to enable those skilled in the art to better understand the scheme of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0035] See also Figure 1 and Figure 2 A coal tar deep processing wastewater treatment device comprises: four RO reverse osmosis membrane modules 1 arranged in sequence from top to bottom, the RO reverse osmosis membrane modules 1 are provided with a backwashing drain port 10, a backwashing water inlet 11 and a waste liquid discharge port 12; one end of the RO reverse osmosis membrane module 1 is a clean water discharge port, and the other end is a waste water inlet; a side wall of the RO reverse osmosis membrane module 1 close to the clean water discharge port is provided with a backwashing drain port 10, a side wall of the RO reverse osmosis membrane module 1 close to the waste water inlet is provided with a backwashing water inlet 11, and a side wall of the RO reverse osmosis membrane module 1 close to the backwashing water inlet 11 is also provided with a waste liquid discharge port 12.

[0036] See also Figure 1 and Figure 2 The tar deep processing wastewater treatment device also includes two water tanks 2. The two ends of the RO reverse osmosis membrane assembly 1 are respectively connected to the two water tanks 2. An opening and closing regulating mechanism 3 is installed on the water tank 2. The two opening and closing regulating mechanisms 3 have the same structure and are symmetrically arranged along the axial direction of the RO reverse osmosis membrane assembly 1.

[0037] A water inlet pipe is installed on the side wall of the water tank 2 connected to the wastewater inlet of the RO reverse osmosis membrane assembly 1, and the other end of the water inlet pipe is connected to the coal tar wastewater discharge equipment. A drain pipe is installed on the side wall of the water tank 2 connected to the clean water outlet of the RO reverse osmosis membrane assembly 1; valves are installed on the backwash drain outlet 10, the backwash water inlet 11 and the waste liquid outlet 12, and the backwash water inlet 11 is connected to the backwash water pump (the coal tar wastewater discharge equipment, valves, and backwash water pump are all existing equipment and are not shown in the figure).

[0038] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 8The opening and closing regulating mechanism 3 includes four fixing frames 30 installed between two inner walls of the water tank 2 arranged along the width direction thereof. The four fixing frames 30 are arranged in sequence from top to bottom. A plug rod 31 corresponding to the end of the RO reverse osmosis membrane assembly 1 is slidably connected to the fixing frame 30. A blocking ball 32 for blocking the end of the RO reverse osmosis membrane assembly 1 is installed at the end of the plug rod 31. A sealing sleeve (not shown) is provided on the outer wall of the blocking ball 32. An elastic reset member 3 is installed between the plug rod 31 and the fixing frame 30. 3. The end of the plug rod 31 away from the blocking ball 32 is connected with a ball rolling, and the water tank 2 is connected with a screw rod 35 and a rotating cylinder 34 in rotation. The rotating cylinder 34 is rotatably sleeved on the screw rod 35. The side wall of the rotating cylinder 34 is provided with a limited guide groove 36. The screw rod 35 is installed with a single-resistance blocking group 37 that moves up and down along the limited guide groove 36 when it rotates. When the single-resistance blocking group 37 moves, it pushes the plug rod 31 in contact with it to drive the corresponding blocking ball 32 to block the corresponding RO reverse osmosis membrane assembly 1 port. The outer wall of the rotating cylinder 34 is installed with a multi-stage adjustment group 38. When the rotating cylinder 34 rotates, the multi-stage adjustment group 38 closes the RO reverse osmosis membrane assembly 1 port by pushing the corresponding blocking ball 32.

[0039] After the rotating cylinder 34 passes through the water tank 2, a seal is installed between the rotating cylinder 34 and the water tank 2. A seal is also installed between the rotating cylinder 34 and the screw 35 (the seal is an existing part), so as to prevent the water in the water tank 2 from overflowing from the water tank 2 along the rotating cylinder 34 or the screw 35. After the lower ends of the two rotating cylinders 34 pass through the water tank 2, they can be connected by a linkage component 1, so as to rotate synchronously in the opposite direction. Among them, the linkage component 1 includes a rotating shaft 1 rotatably installed at the bottom of one of the water tanks 2. The rotating shaft 1 and the adjacent rotating cylinder 34 are meshed and driven by a reversing gear set 1. The rotating shaft 1 and the other rotating cylinder 34 are connected by a sprocket chain mechanism (such as Figure 8 After the lower ends of the two screw rods 35 penetrate the water tank 2, they can be connected through the linkage assembly 2, so as to rotate synchronously in the opposite direction. The linkage assembly 2 includes a rotating shaft 2 rotatably installed at the bottom of one of the water tanks 2. The rotating shaft 2 and its adjacent screw rod 35 are meshed and driven by a reversing gear set 2. The rotating shaft 2 and the other screw rod 35 are connected through a sprocket chain mechanism. (As shown in FIG. Figure 8 One of the screw rods 35 is controlled by an external driving source 1 (such as manual), and one of the rotating cylinders 34 is controlled by an external driving source 2 (such as manual). An external locking member is installed on the top of the water tank 2 to lock the rotating cylinder 34 and the screw rod 35 respectively after they rotate. The locking member consists of a latch and a protrusion. The protrusion is installed on the upper end of the rotating cylinder 34 and the screw rod 35. The protrusion is fixed to the top of the water tank 2 by a latch (the latch and the protrusion are not shown in the figure), so as to limit and lock the rotating cylinder 34 and the screw rod 35 to prevent them from rotating at will.

[0040] In the initial state, the single-resistance plugging group 37 is located above the uppermost plugging rod 31. During use, when it is necessary to clean the four RO reverse osmosis membrane components 1 arranged from top to bottom in sequence, the external driving source 1 drives the screw 35 to rotate, and the two screws 35 rotate in opposite directions at the same time under the connection action of the linkage component 2 therebetween. During the rotation of the screw 35, the single-resistance plugging group 37 presses the ball at the end of the plugging rod 31 in contact with it, thereby pushing the plugging rod 31 to drive the plugging ball 32 to move toward the port of the RO reverse osmosis membrane component 1. At this time, the elastic reset member 33 contracts until the two plugging balls 32 respectively block the ports at both ends of the RO reverse osmosis membrane component 1, thereby realizing the blocking of the ports at both ends of a single RO reverse osmosis membrane component 1, that is, blocking the clean water outlet and the waste water inlet, which greatly improves the convenience of blocking the two ends of the RO reverse osmosis membrane component 1. After that, the backwashing drain port 10 and the backwashing water inlet 11 on the RO reverse osmosis membrane component 1 are opened to perform backwashing cleaning.

[0041] When the blocked RO reverse osmosis membrane assembly 1 is cleaned, the above steps are repeated to continue cleaning the next RO reverse osmosis membrane assembly 1, thereby realizing the integrated driving operation of blocking the ports of multiple RO reverse osmosis membrane assemblies 1, which greatly improves the convenience and efficiency of first blocking both ends of the RO reverse osmosis membrane assembly 1 and then cleaning it.

[0042] When the amount of coal tar wastewater to be treated is small or multiple RO reverse osmosis membrane components 1 need to be cleaned at one time, the rotating drum 34 can be driven to rotate, so that the rotating drum 34 can drive the multi-stage adjustment group 38 installed on its outer wall to rotate at a corresponding angle, thereby pressing and blocking the ports at both ends of two or three RO reverse osmosis membrane components 1 at one time; and when the treatment device is not in use, the multi-stage adjustment group 38 can also simultaneously close the two ends of four RO reverse osmosis membrane components 1. The cooperation between the multi-stage adjustment group 38 and the single-pressure blocking group 37 improves the convenience of first blocking both ends of the RO reverse osmosis membrane component 1 and then cleaning it, and improves the flexibility and versatility of the overall treatment device according to the flow adjustment of coal tar wastewater.

[0043] See also Figure 3 , Figure 4 and Figure 7 The elastic reset member 33 includes a fixing ring 330 fixedly mounted on the insertion rod 31, a reset spring 332 mounted on the insertion rod 31 is installed between the fixing ring 330 and the fixing frame 30, and a shrinkage tube 331 is also installed between the fixing ring 330 and the fixing frame 30, the reset spring 332 is located in the shrinkage tube 331, and the shrinkage tube 331 covers the reset spring 332 therein to prevent impurities in the wastewater from affecting the shrinkage of the reset spring 332.

[0044] See also Figure 1 , Figure 3 , Figure 4 and Figure 7The water tank 2 is also equipped with a latch mechanism 4 for locking the sealing ball 32 that closes the port of the RO reverse osmosis membrane assembly 1. The latch mechanism 4 includes multiple latch groups 41 and multiple sealing coating groups 42. The sealing coating groups 42 correspond to the latch groups 41 one by one, and the corresponding sealing coating groups 42 and latch groups 41 constitute a locking sealing unit. The locking sealing unit corresponds to the sealing ball 32 one by one. The latch group 41 is used to insert and lock the sealing ball 32. The sealing coating group 42 is used to cover and seal the pressing part between the sealing ball 32 and the port of the RO reverse osmosis membrane assembly 1. The water tank 2 is also equipped with a locking driving group 43 that drives the multiple latch groups 41 and the multiple sealing coating groups 42.

[0045] When both ends of the RO reverse osmosis membrane assembly 1 are blocked, the locking drive group 43 drives the plug-in lock group 41 to move toward the blocking ball 32 until the blocking ball 32 pressed against the port of the RO reverse osmosis membrane assembly 1 and the corresponding plug-in lock group 41 are pressed and plugged, thereby pressing the blocking ball 32 against the port of the RO reverse osmosis membrane assembly 1 for a second time, thereby improving the sealing performance of the blocking ball 32 against the port of the RO reverse osmosis membrane assembly 1 and the stability of the blocking ball 32, preventing the blocking ball 32 from shaking under the impact force of coal tar wastewater and affecting the sealing performance of the RO reverse osmosis membrane assembly 1 during cleaning. At the same time, the locking drive group 43 also drives the sealing coating group 42 to coat and seal the blocking ball 32 pressed against the port of the RO reverse osmosis membrane assembly 1 and the port of the RO reverse osmosis membrane assembly 1, thereby further improving the sealing performance of the RO reverse osmosis membrane assembly 1 during cleaning.

[0046] See also Figure 3 , Figure 5 , Figure 6 and Figure 7 The single-resistance sealing group 37 includes a connecting ring 370 that is slidably connected up and down in the rotating cylinder 34. The connecting ring 370 is sleeved on the screw 35 and is connected to the screw 35 by threaded cooperation. The outer wall of the connecting ring 370 is equipped with a connecting block 371 that slides along its circumference. The connecting block 371 passes through the limiting guide groove 36 and is equipped with a trapezoidal resist plate 372. The upper and lower end surfaces of the trapezoidal resist plate 372 are both inclined surfaces, and the two inclined surfaces are in an eight-shaped shape with the small end facing the insertion rod 31.

[0047] Under the limitation of the limiting guide groove 36, during the rotation of the screw rod 35, the connecting ring 370 and the connecting block 371 are driven to move along the axial direction of the rotating cylinder 34 by means of threaded cooperation, and the connecting ring 370 drives the trapezoidal abutment plate 372 to move. When the inclined surface of the trapezoidal abutment plate 372 contacts the ball at the end of one of the corresponding insertion rods 31, the trapezoidal abutment plate 372 pushes the insertion rod 31 to drive the blocking ball 32 to block the corresponding RO reverse osmosis membrane assembly 1 port, thereby realizing the function of a single abutment blocking group 37 moving downward to intermittently block the ports of the four RO reverse osmosis membrane assemblies 1 in sequence, thereby improving the convenience of performing a single blocking operation on the ports of the four RO reverse osmosis membrane assemblies 1 each time.

[0048] See also Figure 5 and Figure 6 A slider 390 that is slidably connected to the inner wall of the rotating cylinder 34 is fixedly connected to the upper end of the outer ring wall of the connecting ring 370, and the connecting block 371 is located below the slider 390. The connecting block 371 and the slider 390 are staggered up and down, so that when the rotating cylinder 34 rotates, the connecting block 371 can be driven to rotate circumferentially along the connecting ring 370, avoiding mutual obstruction between the slider 390 and the connecting block 371 when the rotating cylinder 34 rotates, which affects the circumferential rotation of the connecting block 371 along the connecting ring 370.

[0049] See also Figure 1 , Figure 2 and Figure 7 An observation port 20 is provided on one of the two side walls of the water tank 2 arranged along its width direction, and a transparent panel is installed on the observation port 20. An indicator needle 21 that slides against the transparent panel is installed on the side wall of the trapezoidal abutment plate 372. The side wall of the water tank 2 is also provided with an indicator line 22 that corresponds one-to-one to the axis of the insertion rod 31.

[0050] The trapezoidal support plate 372 drives the indicator needle 21 to move during the up and down movement. When the indicator needle 21 is aligned with one of the indicator lines 22, it means that the trapezoidal support plate 372 pushes the insertion rod 31 and the blocking ball 32 corresponding to the indicator line 22 to block the corresponding RO reverse osmosis membrane component 1 port, so that the operator can observe and determine that the trapezoidal support plate 372 pushes the insertion rod 31 and the blocking ball 32 to effectively block the single RO reverse osmosis membrane component 1 port.

[0051] See also Figure 3 and Figure 5The multi-stage adjustment group 38 includes a secondary closing component 380, a tertiary closing component 381 and a full closing component 382 installed on the outer wall of the rotating cylinder 34. The secondary closing component 380, the tertiary closing component 381, the full closing component 382 and the limiting guide groove 36 are evenly arranged along the circumference of the rotating cylinder 34. The secondary closing component 380 is composed of two arc-shaped wedge blocks, the tertiary closing component 381 is composed of three arc-shaped wedge blocks, and the full closing component 382 is composed of four arc-shaped wedge blocks. The arc-shaped wedge blocks in the secondary closing component 380, the tertiary closing component 381 and the full closing component 382 are aligned with the corresponding plug rods 31 in sequence from top to bottom.

[0052] When the amount of coal tar wastewater to be treated is small, the rotating drum 34 is driven to rotate, and the rotating drum 34 drives the secondary closing component 380, the tertiary closing component 381 and the full closing component 382 to rotate. When the two arc-shaped wedges in the secondary closing component 380 collide with the two plug rods 31 on the upper side, the two plug rods 31 on the upper side drive the plugging balls 32 connected thereto to plug the two RO reverse osmosis membrane components 1 ports on the upper side; when the three arc-shaped wedges in the tertiary closing component 381 collide with the three plug rods 31 on the upper side, the three plug rods 31 on the upper side drive the plugging balls 32 connected thereto to plug the three RO reverse osmosis membrane components 1 ports on the upper side; through the cooperation of the multi-stage adjustment group 38 and the single-resistance plugging group 37, the functions of plugging a single RO reverse osmosis membrane component 1, plugging two RO reverse osmosis membrane components 1 at the same time, and plugging three RO reverse osmosis membrane components 1 at the same time are realized, which greatly improves the flexibility of the use of the wastewater treatment device. After the two ends of the RO reverse osmosis membrane component 1 are plugged, backwashing treatment can be carried out.

[0053] When the wastewater treatment device is not in use, the rotating drum 34 can drive the full-closing assembly 382 to push the four insertion rods 31 to completely block the ports of the four RO reverse osmosis membrane assemblies 1 .

[0054] See also Figure 3 , Figure 4 and Figure 7 The latch group 41 includes connecting rods 410 symmetrically arranged along the width direction of the water tank 2, and the opposite ends of the two connecting rods 410 are installed with abutment blocks 411. The side walls of the blocking balls 32 corresponding to the positions of the abutment blocks 411 are provided with insertion grooves 412. The side of the abutment block 411 close to the port of the RO reverse osmosis membrane assembly 1 is provided with an inclined surface, and the inner wall of the insertion groove 412 is provided with an inclined surface matching the inclined surface of the abutment block 411.

[0055] See also Figure 3 , Figure 4 and Figure 7The sealing covering group 42 includes mounting strips 420 symmetrically arranged along the width direction of the water tank 2 , and semi-ring clamping plates 421 are installed on the opposite surfaces of the two mounting strips 420 , and a sealing sheet is installed on the inner ring surface of the semi-ring clamping plates 421 .

[0056] See also Figure 1 , Figure 3 , Figure 4 and Figure 7 The locking drive group 43 includes a gear 430 that is rotatably connected to the top inner wall and the bottom inner wall of the water tank 2. A plurality of mounting strips 420 arranged on the same side and from top to bottom and an end of the connecting rod 410 away from the blocking ball 32 are jointly installed with a connecting strip 431. The connecting strip 431 is slidably connected to the water tank 2. Racks 432 that mesh with the gear 430 are installed on the opposite surfaces of the two connecting strips 431. A locking rotating rod 433 is rotatably connected to the side wall of the water tank 2. The locking rotating rod 433 is connected to one of the connecting strips 431 by threaded cooperation.

[0057] The two locking rotating rods 433 rotate and penetrate the water tank 2 and are connected through a sprocket chain transmission (not shown in the figure). During the rotation process, the locking rotating rod 433 drives the connecting strip 431 connected thereto to move horizontally toward the insertion rod 31 through the threaded engagement between the connecting strip 431, and the connecting strips 431 on both sides of the insertion rod 31 move toward the insertion rod 31 at the same time under the meshing transmission action of the gear 430 and the rack 432. The connecting strip 431 drives the pressure block 411 and the semi-ring clamping plate 421 to move toward the blocking ball 32 through the connecting rod 410 and the mounting strip 420 until the pressure block 411 pushes the blocking ball 32. The ball 32 is inserted into the insertion groove 412 aligned with it, so that the sealing ball 32 pressed against the port of the RO reverse osmosis membrane assembly 1 is further pressed against the port of the RO reverse osmosis membrane assembly 1, and at the same time, the corresponding two semi-ring clamping plates 421 will press the sealing ball 32 pressed against the port of the RO reverse osmosis membrane assembly 1 and the port of the RO reverse osmosis membrane assembly 1 to cover and seal, further improving the sealing performance of the RO reverse osmosis membrane assembly 1 during cleaning; wherein, the shape of the pressing surface of the semi-ring clamping plate 421 is adapted to the shape of the pressed position between the sealing ball 32 and the port of the RO reverse osmosis membrane assembly 1 in the pressed state.

[0058] See also Figure 1 , Figure 2 and Figure 5After the top of the rotating cylinder 34 rotates and penetrates the water tank 2, a gear indicator bar 340 evenly arranged along its circumference is installed. The multiple gear indicator bars 340 correspond to the secondary closing component 380, the tertiary closing component 381, the full closing component 382 and the limiting guide groove 36 one by one. The top of the water tank 2 is also equipped with an alignment line 341 that is aligned parallel to the axis of the plug rod 31. Through the coordination of the alignment line 341 and the gear indicator bar 340, the situation when the RO reverse osmosis membrane component 1 is blocked can be intuitively viewed. For example, when the alignment line 341 is adjacent to and aligned with the gear indicator bar 340 corresponding to the secondary closing component 380, it means that at this time, the two arc wedges in the secondary closing component 380 are in conflict with the two plug rods 31 on the upper side, and the blocking balls 32 connected to the two plug rods 31 on the upper side block the two RO reverse osmosis membrane component 1 ports on the upper side.

[0059] See also Figure 1-Figure 8 In specific operation, when the RO reverse osmosis membrane assembly 1 is blocked and cleaned, the external driving source 1 drives the screw 35 to rotate, and the two screws 35 rotate in the opposite direction at the same time under the connection of the linkage assembly 2 therebetween. During the rotation of the screw 35, the single blocking group 37 presses the ball at the end of the plug rod 31 in contact with it, thereby pushing the plug rod 31 to drive the blocking ball 32 to move toward the port of the RO reverse osmosis membrane assembly 1. At this time, the elastic reset member 33 contracts until the two blocking balls 32 block the two end ports of the RO reverse osmosis membrane assembly 1 respectively, thereby blocking the two end ports of the single RO reverse osmosis membrane assembly 1, and then the backwashing drain port 10 and the backwashing water inlet 11 on the RO reverse osmosis membrane assembly 1 are opened, so as to perform backwashing cleaning. When the blocked RO reverse osmosis membrane assembly 1 is cleaned, the above steps are repeated to continue cleaning the next RO reverse osmosis membrane assembly 1.

[0060] When the amount of coal tar wastewater to be treated is small or multiple RO reverse osmosis membrane assemblies 1 need to be cleaned at one time, the rotating drum 34 is driven to rotate, so that the rotating drum 34 drives the multi-stage adjustment group 38 installed on its outer wall to rotate at a corresponding angle, thereby pressing and blocking the ports at both ends of two or three RO reverse osmosis membrane assemblies 1 at one time. When the treatment device is not in use, the multi-stage adjustment group 38 can simultaneously close the two ends of four RO reverse osmosis membrane assemblies 1, and then the four RO reverse osmosis membrane assemblies 1 are backwashed and cleaned at the same time.

[0061] In the description of the present invention, it is necessary to understand that the terms "length", "width", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are 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 on the present invention.

[0062] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0063] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A coal tar deep processing wastewater treatment device, comprising: Four RO reverse osmosis membrane modules (1) are arranged in sequence from top to bottom, and the RO reverse osmosis membrane modules (1) are provided with a backwashing drain outlet (10), a backwashing water inlet (11) and a waste liquid outlet (12), characterized in that: Two water tanks (2), both ends of the RO reverse osmosis membrane assembly (1) are respectively connected to the two water tanks (2), an opening and closing regulating mechanism (3) is installed on the water tank (2), and the two opening and closing regulating mechanisms (3) have the same structure and are symmetrically arranged along the axial direction of the RO reverse osmosis membrane assembly (1); The opening and closing regulating mechanism (3) comprises four fixing frames (30) installed between two inner walls of the water tank (2) arranged along the width direction thereof, the four fixing frames (30) being arranged in sequence from top to bottom, a plugging rod (31) corresponding to the end of the RO reverse osmosis membrane assembly (1) being slidably connected to the fixing frame (30), a blocking ball (32) for blocking the end of the RO reverse osmosis membrane assembly (1) being installed at the end of the plugging rod (31), an elastic reset member (33) being installed between the plugging rod (31) and the fixing frame (30), A screw rod (35) and a rotating cylinder (34) are rotatably connected in the water tank (2). The rotating cylinder (34) is rotatably sleeved on the screw rod (35). A limit guide groove (36) is provided on the side wall of the rotating cylinder (34). A single-resistance plugging group (37) is installed on the screw rod (35) and moves up and down along the limit guide groove (36) when the screw rod (35) rotates. When the single-resistance plugging group (37) moves, it pushes the plugging rod (31) in contact with the plugging group (37) to drive the corresponding plugging ball (32) to plug the corresponding port of the RO reverse osmosis membrane assembly (1). A multi-stage regulating group (38) is installed on the outer wall of the rotating cylinder (34). When the rotating cylinder (34) rotates, the multi-stage regulating group (38) closes the port of the RO reverse osmosis membrane assembly (1) by pushing the corresponding blocking ball (32). The multi-stage regulating group (38) and the single blocking group (37) cooperate to control the number of RO reverse osmosis membrane assemblies (1) that are blocked synchronously at both ends. The water tank (2) is also provided with a latch mechanism (4) for locking the blocking ball (32) after the port is sealed. The latch mechanism (4) is also used to cover and seal the contact point between the blocking ball (32) and the port of the RO reverse osmosis membrane assembly (1).

2. A coal tar deep processing wastewater treatment device according to claim 1, characterized in that: The single-resistance plugging group (37) comprises a connecting ring (370) connected to the rotating cylinder (34) by sliding up and down. The connecting ring (370) is sleeved on the screw rod (35) and connected to the screw rod (35) by means of threaded engagement. The outer wall of the connecting ring (370) is provided with a connecting block (371) that slides along its circumferential direction. The connecting block (371) passes through the limiting guide groove (36) and is provided with a trapezoidal resisting plate (372). Both upper and lower end surfaces of the trapezoidal resisting plate (372) are inclined surfaces, and the two inclined surfaces are in an eight-shaped shape with the small end facing the insertion rod (31).

3. The coal tar deep processing wastewater treatment device according to claim 1, characterized in that: The multi-stage adjustment group (38) comprises a secondary closing component (380), a tertiary closing component (381) and a full closing component (382) installed on the outer wall of the rotating cylinder (34); the secondary closing component (380), the tertiary closing component (381), the full closing component (382) and the limiting guide groove (36) are evenly arranged along the circumference of the rotating cylinder (34); the secondary closing component (380) is composed of two arc-shaped wedge blocks; the tertiary closing component (381) is composed of three arc-shaped wedge blocks; the full closing component (382) is composed of four arc-shaped wedge blocks; the arc-shaped wedge blocks in the secondary closing component (380), the tertiary closing component (381) and the full closing component (382) are all aligned with the corresponding plug rods (31) in sequence from top to bottom.

4. The coal tar deep processing wastewater treatment device according to claim 1, characterized in that: The locking mechanism (4) comprises a plurality of locking groups (41) and a plurality of sealing and covering groups (42); the locking groups (41) are used to insert and lock the blocking balls (32); and the sealing and covering groups (42) are used to cover and seal the contact area between the blocking balls (32) and the ports of the RO reverse osmosis membrane components (1); The latch group (41) comprises connecting rods (410) symmetrically arranged along the width direction of the water tank (2), and opposing ends of the two connecting rods (410) are both provided with pressing blocks (411). The side wall of the blocking ball (32) is provided with an inserting groove (412), and a side of the inserting groove (411) close to the port of the RO reverse osmosis membrane assembly (1) is provided with an inclined surface, and the inner wall of the inserting groove (412) is provided with an inclined surface matching the inclined surface of the inserting groove (411).

5. A coal tar deep processing wastewater treatment device according to claim 4, characterized in that: The sealing covering group (42) corresponds to the latching group (41) one by one, and the corresponding sealing covering group (42) and latching group (41) constitute a locking sealing unit, and the locking sealing unit corresponds to the blocking ball (32) one by one. The sealing covering group (42) includes mounting strips (420) symmetrically arranged along the width direction of the water tank (2), and semi-ring clamping plates (421) are installed on the opposite surfaces of the two mounting strips (420), and the inner ring surface of the semi-ring clamping plate (421) is installed with a sealing sheet.

6. A coal tar deep processing wastewater treatment device according to claim 5, characterized in that: The water tank (2) is also provided with a locking drive group (43) for driving a plurality of latch groups (41) and a plurality of sealing covering groups (42); the locking drive group (43) comprises a gear (430) which is rotatably connected to the top inner wall and the bottom inner wall of the water tank (2); a plurality of mounting bars (420) arranged from top to bottom on the same side and a connecting rod (410) are provided with a connecting bar (431) at one end away from the blocking ball (32); the connecting bar (431) is slidably connected to the water tank (2); racks (432) meshing with the gear (430) are provided on the opposite surfaces of the two connecting bars (431); a locking rotating rod (433) is rotatably connected to the side wall of the water tank (2); the locking rotating rod (433) is connected to one of the connecting bars (431) by threaded engagement.

7. The coal tar deep processing wastewater treatment device according to claim 3, characterized in that: After the top of the rotating cylinder (34) rotates and penetrates the water tank (2), gear indicator strips (340) evenly arranged along its circumference are installed. The plurality of gear indicator strips (340) correspond to the secondary closing component (380), the tertiary closing component (381), the full closing component (382) and the limiting guide groove (36) one by one. The top of the water tank (2) is also installed with an alignment line (341) that is aligned vertically and parallel to the axis of the insertion rod (31).

8. The coal tar deep processing wastewater treatment device according to claim 2, characterized in that: The water tank (2) is provided with an observation port (20) on one of the two sides arranged along the width direction thereof, a transparent panel is installed on the observation port (20), an indicator needle (21) that is slidably abutted against the transparent panel is installed on the side wall of the trapezoidal abutment plate (372), and an indicator line (22) that corresponds one-to-one with the axis of the insertion rod (31) is also provided on the side wall of the water tank (2).

9. The coal tar deep processing wastewater treatment device according to claim 1, characterized in that: The elastic reset member (33) comprises a fixing ring (330) fixedly mounted on the insertion rod (31), a reset spring (332) mounted on the insertion rod (31) is installed between the fixing ring (330) and the fixing frame (30), and a shrinking tube (331) is also installed between the fixing ring (330) and the fixing frame (30), and the reset spring (332) is located in the shrinking tube (331).

10. The coal tar deep processing wastewater treatment device according to claim 2, characterized in that: A slider (390) is fixedly connected to the upper end of the outer ring wall of the connecting ring (370) and is slidably connected to the inner wall of the rotating cylinder (34). The connecting block (371) is located below the slider (390).

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