Zero-pollution production tail water treatment equipment

Abstract

The zero-pollution production tail water treatment equipment comprises a machine base, and a positioning groove is formed in the center of the upper surface of the machine base; an impurity cylinder is arranged right above the machine base; a cylinder opening of the impurity cylinder faces upwards, and the lower end of the impurity cylinder is clamped in the positioning groove; an extension pipe coaxial with the impurity cylinder is arranged above the impurity cylinder, and the half length of the extension pipe is greater than the length of the impurity cylinder; the extension pipe and the impurity cylinder are spliced to form a treatment cylinder; a tube cover covers a tube opening in the upper end of the extension tube; a drain hole communicated with the inner space of the extension pipe is formed in the upper surface of the cylinder cover; a plug matched with the drain hole is screwed in the drain hole; and the edge of a cylinder opening at the upper end of the impurity cylinder extends upwards to form an annular inner pipe. According to the zero-pollution production tail water treatment equipment disclosed by the utility model, impurities filtered from production tail water by the treatment barrel can be quickly cleaned out of the treatment barrel, and the cleaning efficiency of the filter screen can be effectively ensured.

Description

Technical Field

[0001] The utility model relates to production tail water treatment equipment, in particular to zero-pollution production tail water treatment equipment. Background Art

[0002] Zero-pollution production tail water treatment equipment is a kind of equipment used to treat production tail water, which can effectively avoid the direct discharge of production tail water and cause pollution to the environment. When treating production tail water, the production tail water treatment equipment will first filter the impurities in the production tail water through the filter net, and then further purify the impurity-free production tail water. As the filter net continuously intercepts the impurities in the treatment cylinder of the production tail water treatment equipment, a large amount of impurities will accumulate at the bottom of the treatment cylinder. The treatment cylinder of the traditional production tail water treatment equipment is an integrated structure with a deeper depth, so the impurities at the bottom of the treatment cylinder are extremely difficult to clean, and it is extremely difficult to clean it up, which seriously affects the cleaning efficiency and cleaning quality. As the filter net continuously filters the impurities in the production tail water, some impurities will continue to adhere to the filter net, resulting in the continuous accumulation of impurities on the filter net, and finally causing the filter holes on the filter net to be blocked by impurities, affecting the filtering effect of the filter net. The production tail water treatment equipment generally takes in water through the bottom of the treatment cylinder, so the filter net is generally installed in the bottom of the treatment cylinder. When the depth of the treatment cylinder is deep, it is extremely difficult to remove the filter net, which seriously affects the cleaning efficiency of the filter net. Summary of the invention

[0003] The utility model aims to solve the existing technical problem and provide a zero-pollution production tail water treatment device, which can quickly clean out the impurities filtered out of the production tail water by the treatment cylinder from the treatment cylinder and can effectively ensure the cleaning efficiency of the filter screen.

[0004] The technical solution adopted by the utility model to solve the above technical problems is:

[0005] The utility model discloses a zero-pollution production tail water treatment equipment, comprising a machine base, wherein a positioning groove is arranged at the center of the upper surface of the machine base; an impurity barrel is arranged just above the machine base; the barrel mouth of the impurity barrel faces upward, and the lower end of the impurity barrel is stuck in the positioning groove; an extension tube coaxial with the impurity barrel is arranged above the impurity barrel, and half of the length of the extension tube is greater than the length of the impurity barrel; the extension tube and the impurity barrel are assembled to form a treatment barrel; a barrel cover is arranged on the upper end of the extension tube; a drainage hole is arranged on the upper surface of the barrel cover, which is connected with the inner space of the extension tube; the drainage hole is provided with a drainage hole in the drainage hole. A plug matching it is screwed on; an inner tube in a ring shape is extended upward from the edge of the upper end of the impurity barrel; an outer tube is extended downward from the outer edge of the lower end face of the extension tube to be set outside the inner tube, and the lower end face of the outer tube is in contact with the upper end face of the impurity barrel; a limit device matching the impurity barrel is provided on the upper surface of the machine base; a lifting device matching the extension tube is provided on the upper surface of the machine base; a filtering device matching it is provided in the impurity barrel; an extrusion device matching the filtering device is provided on the barrel cover; a water inlet device is provided on the outer wall of the lower end of the impurity barrel.

[0006] The water inlet device includes a water inlet joint arranged on the rear side wall of the lower part of the impurity barrel; a first screw hole is arranged at the center of the rear end face of the water inlet joint; a water inlet hole that is connected to the internal space of the impurity barrel is arranged at the center of the bottom of the first screw hole; a sealing head matching with it is screwed in the first screw hole; a sealing rod matching with the water inlet hole is arranged at the center of the side wall of the sealing head that fits with the bottom of the first screw hole; a card groove is arranged at the center of the side wall of the sealing head away from the bottom of the first screw hole, and the card groove is a regular hexagon.

[0007] The filtering device comprises a lower filter plate and an upper filter plate arranged in the impurity barrel, the lower filter plate is located above the water inlet hole, and the upper filter plate is located above the lower filter plate; the lower filter plate is provided with a plurality of evenly distributed lower filter holes; the upper filter plate is provided with a plurality of evenly distributed upper filter holes; the diameter of the upper filter hole is smaller than the diameter of the lower filter hole; the inner walls on the left and right sides of the impurity barrel are provided with mutually symmetrical limiting grooves, and the notches at the upper ends of the limiting grooves are located on the upper end surface of the inner tube; the left and right sides of the outer wall of the lower filter plate are provided with lower sliders matching the limiting grooves; the left and right sides of the outer wall of the upper filter plate are provided with upper sliders matching the limiting grooves, and the upper surface of the upper slider is coplanar with the upper surface of the upper filter plate; the upper surface of the upper slider is in contact with the lower end surface of the extension tube; the center of the upper surface of the lower filter plate is provided with a second screw hole; the center of the upper filter plate is provided with a through hole coaxial with the second screw hole; a screw is screwed in the second screw hole; the upper end of the screw passes through the through hole upward; the screw is screwed with an upper nut in contact with the upper surface of the upper filter plate and a lower nut in contact with the lower surface of the lower filter plate.

[0008] The extrusion device includes an extrusion cylinder arranged at the center of the upper surface of the cylinder cover; the lower end of the piston rod of the extrusion cylinder passes downward through the cylinder cover and is provided with an extrusion plate matching the extension tube; the extrusion plate is provided with a plurality of water holes corresponding to the positions of the upper filter holes; the outer edge of the lower filter plate is provided with a plurality of guide holes evenly distributed in a circumference; the lower inner wall of the impurity barrel is provided with a plurality of third screw holes coaxial with the guide holes; the lower end of a guide rod is screwed into the third screw hole, and the upper end of the guide rod is upwardly inserted into the guide hole; a spring set outside the guide rod is provided between the lower surface of the lower filter plate and the lower inner wall of the impurity barrel; and a receiving groove matching the upper end of the screw rod is provided at the center of the lower surface of the extrusion plate.

[0009] The limiting device includes a limiting step arranged on the outer wall of the upper end of the impurity barrel, and the limiting step is annular; the impurity barrel is outer-circumferentially provided with a limiting sleeve that fits with the limiting step; the outer wall of the limiting sleeve is provided with a plurality of extension arms that are evenly distributed in a circle; the outer end of the extension arm is provided with a fixing foot that fits with the upper surface of the machine base; the fixing foot and the machine base, and the barrel cover and the upper end of the extension tube are all fixed by screws.

[0010] The lifting device comprises a lifting plate arranged on the outer wall of the extension tube; the lower surface of the machine base is provided with a plurality of lifting cylinders located below the lifting plate, and the upper ends of the piston rods of the lifting cylinders are arranged on the lower surface of the lifting plate.

[0011] The upper end surface of the extension tube is provided with a first annular sealing groove; a first sealing ring matching the first sealing groove is provided in the first sealing groove; the lower end surface of the outer tube is provided with a second annular sealing groove; a second sealing ring matching the second sealing groove is provided in the second sealing groove.

[0012] The beneficial effects of the utility model are:

[0013] Compared with the prior art, the zero-pollution production tail water treatment equipment adopting the structure of the utility model divides the treatment cylinder into an impurity cylinder and an extension pipe. After the impurities in the production tail water are filtered, the impurities are all trapped in the impurity cylinder. When the impurities need to be cleaned, the filtered production tail water can be pumped to the next purification position through the drainage hole, so that only impurities are accumulated in the impurity cylinder. Then the lifting device can be used to move the extension pipe upward, so as to separate the extension pipe from the impurity cylinder. The length of the impurity cylinder is less than half the length of the extension pipe, so the impurity cylinder itself is extremely short. As the upper filter plate and the lower filter plate are taken out through the upper end of the impurity cylinder, the impurities in the impurity cylinder can be easily cleaned, effectively reducing the cleaning difficulty, thereby effectively ensuring the cleaning efficiency and cleaning quality when cleaning the impurities in the impurity cylinder, and at the same time effectively ensuring the cleaning efficiency of the upper filter holes on the upper filter plate and the lower filter holes on the lower filter plate, effectively avoiding the situation where the upper filter holes and the lower filter holes are blocked due to impurity accumulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a cross-sectional view of the zero-pollution production tail water treatment equipment of the utility model;

[0015] Figure 2 yes Figure 1 An enlarged view of part A;

[0016] Figure 3 It is a cross-sectional view of the impurity barrel. DETAILED DESCRIPTION

[0017] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0018] See also Figures 1 to 3 The utility model provides a zero-pollution production tail water treatment equipment, including a machine base 1, a positioning groove 2 is provided at the center of the upper surface of the machine base 1; an impurity barrel 301 is provided just above the machine base 1; the barrel mouth of the impurity barrel 301 faces upward, and the lower end of the impurity barrel 301 is stuck in the positioning groove 2; an extension pipe 302 coaxial with the impurity barrel 301 is provided above the impurity barrel 301, and half of the length of the extension pipe 302 is greater than the length of the impurity barrel 301; the extension pipe 302 and the impurity barrel 301 are assembled to form a treatment barrel 3; the upper end of the extension pipe 302 is covered with a barrel cover 4; the upper surface of the barrel cover 4 is provided with a drainage hole 5 which is connected with the inner space of the extension pipe 302 ; A plug 6 matching it is screwed into the drainage hole 5; an inner tube 7 in a ring shape is extended upward from the edge of the upper end of the impurity barrel 301; an outer tube 8 which is set outside the inner tube 7 is extended downward from the outer edge of the lower end face of the extension tube 302, and the lower end face of the outer tube 8 is in contact with the upper end face of the impurity barrel 301; a limiting device matching the impurity barrel 301 is provided on the upper surface of the machine base 1; a lifting device matching the extension tube 302 is provided on the upper surface of the machine base 1; a filtering device matching it is provided in the impurity barrel 301; an extrusion device matching the filtering device is provided on the barrel cover 4; a water inlet device is provided on the outer wall of the lower end of the impurity barrel 301.

[0019] The water inlet device includes a water inlet joint 9 arranged on the rear side wall of the lower part of the impurity barrel 301; a first screw hole 10 is arranged at the center of the rear end face of the water inlet joint 9; a water inlet hole 11 which is connected with the internal space of the impurity barrel 301 is arranged at the center of the bottom of the first screw hole 10; a sealing head 12 which matches it is screwed in the first screw hole 10; a sealing rod 13 which matches the water inlet hole 11 is arranged at the center of the side wall on which the sealing head 12 fits with the bottom of the first screw hole 10; a card groove 14 is arranged at the center of the side wall on which the sealing head 12 is away from the bottom of the first screw hole 10, and the card groove 14 is a regular hexagon.

[0020] The filtering device comprises a lower filter plate 15 and an upper filter plate 16 arranged in the impurity barrel 301, wherein the lower filter plate 15 is located above the water inlet hole 11, and the upper filter plate 16 is located above the lower filter plate 15; the lower filter plate 15 is provided with a plurality of evenly distributed lower filter holes 17; the upper filter plate 16 is provided with a plurality of evenly distributed upper filter holes 18; the diameter of the upper filter holes 18 is smaller than the diameter of the lower filter holes 17; the inner walls on the left and right sides of the impurity barrel 301 are provided with mutually symmetrical limiting grooves 19, and the upper end notches of the limiting grooves 19 are located on the upper end surface of the inner tube 7; the outer walls of the lower filter plate 15 are provided with lower sliding blocks 2 matching the limiting grooves 19 on the left and right sides. 0; upper sliders 21 matching the limit grooves 19 are provided on the left and right sides of the outer wall of the upper filter plate 16, and the upper surface of the upper slider 21 is coplanar with the upper surface of the upper filter plate 16; the upper surface of the upper slider 21 is in contact with the lower end surface of the extension tube 302; a second screw hole 22 is provided at the center of the upper surface of the lower filter plate 15; a through hole 23 coaxial with the second screw hole 22 is provided at the center of the upper filter plate 16; a screw rod 24 is screwed in the second screw hole 22; the upper end of the screw rod 24 passes through the through hole 23 upwards; an upper nut 25 in contact with the upper surface of the upper filter plate 16 and a lower nut 26 in contact with the lower surface of the lower filter plate 15 are screwed out of the screw 24.

[0021] The extrusion device includes an extrusion cylinder 27 arranged at the center of the upper surface of the cylinder cover 4; the lower end of the piston rod of the extrusion cylinder 27 passes downward through the cylinder cover 4 and is provided with an extrusion plate 28 matching the extension tube 302; the extrusion plate 28 is provided with a plurality of water holes 29 corresponding to the position of the upper filter hole 18; the outer edge of the lower filter plate 15 is provided with a plurality of guide holes 30 evenly distributed in a circumference; the lower inner wall of the impurity barrel 301 is provided with a plurality of third screw holes 31 coaxial with the guide holes 30; the lower end of a guide rod 32 is screwed into the third screw hole 31, and the upper end of the guide rod 32 is upwardly penetrated into the guide hole 30; a spring 33 is provided between the lower surface of the lower filter plate 15 and the lower inner wall of the impurity barrel 301, which is set on the outside of the guide rod 32; the center of the lower surface of the extrusion plate 28 is provided with a receiving groove 34 matching the upper end of the screw rod 24.

[0022] The limiting device includes a limiting step 35 arranged on the outer wall of the upper end of the impurity barrel 301, and the limiting step 35 is annular; the outer shell of the impurity barrel 301 is provided with a limiting sleeve 36 that fits with the limiting step 35; the outer wall of the limiting sleeve 36 is provided with a plurality of extension arms 37 evenly distributed in a circle; the outer end of the extension arm 37 is provided with a fixing foot 38 that fits with the upper surface of the machine base 1; the fixing foot 38 and the machine base 1, and the barrel cover 4 and the upper end of the extension tube 302 are fixed by screws 39.

[0023] The lifting device includes a lifting plate 40 arranged on the outer wall of the extension tube 302; the lower surface of the base 1 is provided with a plurality of lifting cylinders 41 located below the lifting plate 40, and the upper ends of the piston rods of the lifting cylinders 41 are arranged on the lower surface of the lifting plate 40.

[0024] The upper end surface of the extension tube 302 is provided with a first annular sealing groove 42; a first sealing ring 43 matching therewith is disposed in the first sealing groove 42; the lower end surface of the outer tube 8 is provided with a second annular sealing groove 44; a second sealing ring 45 matching therewith is disposed in the second sealing groove 44.

[0025] The method of using the utility model is as follows:

[0026] Before filtering the production tail water, one end of the adapted hexagonal wrench can be inserted into the regular hexagonal slot 14, and then the sealing head 12 can be rotated to screw the sealing head 12 out of the first screw hole 10, and then the sealing rod 13 can be pulled out from the water inlet hole 11 through the sealing head 12, and then the water inlet joint 9 can be used to connect it to the water inlet pipeline. At this time, the production tail water will flow into the impurity barrel 301 through the water inlet hole 11. As the production tail water continues to flow into the impurity barrel 301, the water level of the production tail water will eventually be higher than the position of the lower filter plate 15. At this time, the lower filter plate 15 will filter the impurities in the production tail water through the lower filter hole 17, and the impurities will be trapped in the space below the lower filter plate 15. The production tail water filtered by 17 will continue to flow upward, and then flow through the upper filter hole 18 on the upper filter plate 16. The diameter of the upper filter hole 18 is smaller than the diameter of the lower filter hole 17. Therefore, the upper filter hole 18 can further filter the fine impurities remaining in the production tail water, thereby ensuring that the production tail water above the upper filter plate 16 is an impurity-free water flow, which is convenient for further purification after being led out separately. If the production tail water above the upper filter plate 16 needs to be led out to the outside, the plug 6 can be unscrewed from the drain hole 5, and then the drain pipe can be extended into the extension pipe 302 through the drain hole 5, and then the pumping equipment matching the drain pipe can be used to pump the double-filtered production tail water to the actual required position for the next purification work.

[0027] If the impurities trapped in the impurity barrel 301 need to be processed, the extrusion cylinder 27 can be started first. At this time, the piston rod of the extrusion cylinder 27 will drive the extrusion plate 28 to move downward. When the extrusion plate 28 moves down to a certain extent, the lower surface of the extrusion plate 28 fits with the upper surface of the upper filter plate 16, and the accommodating groove 34 can effectively accommodate the upper end of the screw rod 24 and the upper nut 25, thereby effectively ensuring that the lower surface of the extrusion plate 28 and the upper surface of the upper filter plate 16 can fit closely. As the extrusion plate 28 continues to be pressed downward, the upper filter plate 16 will push the lower filter plate 15 downward through the screw rod 24. At this time, the spring 33 is compressed, and the distance between the upper end surface of the guide rod 32 and the lower surface of the upper filter plate 16 can ensure that the upper filter plate 16 and the lower filter plate 15 can move downward enough. When the upper filter plate 16 and the lower filter plate 15 move downward with the extrusion plate 28, the production tail water originally located below the extrusion plate 28 is transferred to the top of the extrusion plate 28 through the water hole 29. At this time, the drainage pipe extending into the extension pipe 302 through the drainage hole 5 can be further extended into the impurity barrel 301 to pump the water flow in the impurity barrel 301, thereby effectively increasing the proportion of impurities in the impurity barrel 301. When only negligible production tail water is left in the impurity barrel 301, it can be ensured that the production tail water can be maximized. At the same time, it is convenient to clean the impurities in the impurity barrel 301. When the extrusion is completed, the extrusion cylinder 27 will drive the extrusion plate 28 to move up and reset. The upper filter plate 16 and the lower filter plate 15 are both moved up and reset under the action of the spring 33.

[0028] After the required production tail water is pumped away by the drainage pipe, the drainage pipe can be drawn out from the drainage hole 5, and then the plug 6 is screwed into the drainage hole 5, and the sealing head 12 is screwed into the first screw hole 10 again, so that the sealing rod 13 blocks and seals the water inlet 11 again, and then the treatment tube 3 formed by the extension tube 302 and the impurity tube 301 can be separated. At this time, the lifting cylinder 41 can be started, and the piston rod of the lifting cylinder 41 will push the lifting plate 40 upward, so as to realize the upward movement of the extension tube 302. During the upward movement of the extension tube 302, the impurity tube 301 is always restricted in the positioning groove 2 by the limiting device, so as to realize the impurity tube 301 and the extension tube. 302 is separated. At this time, the upper end of the impurity barrel 301 is completely exposed to the outside world. The upper filter plate 16 and the lower filter plate 15 can be directly taken out from the impurity barrel 301 through the upper end of the impurity barrel 301. If it is found that it is inconvenient to take them out, the upper filter plate 16 can be pressed downward first, and then the upper filter plate 16 can be partially popped upward by using the elasticity of the spring 33, so that the upper filter plate 16 and the lower filter plate 15 can be easily taken out from the impurity barrel 301. After the upper filter plate 16 and the lower filter plate 15 are taken out, the upper filter holes 18 on the upper filter plate 16 and the lower filter holes 17 on the lower filter plate 15 can be cleaned, and then the impurities in the impurity barrel 301 can be cleaned.

[0029] In summary, the present invention divides the treatment barrel 3 into an impurity barrel 301 and an extension pipe 302. After the impurities in the production tail water are filtered, the impurities are trapped in the impurity barrel 301. When the impurities need to be cleaned, the filtered production tail water can be pumped to the next purification position through the drainage hole 5, so that only the impurities are accumulated in the impurity barrel 301. Then, the lifting device can be used to move the extension pipe 302 upward, so as to separate the extension pipe 302 from the impurity barrel 301. The length of the impurity barrel 301 is less than the length of the extension pipe 302. The length of the impurity barrel 301 is one of that of the upper filter plate 16 and the lower filter plate 15, so the impurity barrel 301 itself is extremely short. As the upper filter plate 16 and the lower filter plate 15 are taken out through the upper end of the impurity barrel 301, the impurities in the impurity barrel 301 can be easily cleaned, which effectively reduces the difficulty of cleaning, thereby effectively ensuring the cleaning efficiency and cleaning quality when cleaning the impurities in the impurity barrel 301, and at the same time effectively ensuring the cleaning efficiency of the upper filter holes 18 on the upper filter plate 16 and the lower filter holes 17 on the lower filter plate 15, and effectively avoiding the situation where the upper filter holes 18 and the lower filter holes 17 are blocked due to the accumulation of impurities.

[0030] The fixing foot 38 and the machine base 1, and the barrel cover 4 and the upper end of the extension tube 302 are fixed by screws 39. This fixing method facilitates the disassembly and assembly between the fixing foot 38 and the machine base 1, and the disassembly and assembly between the barrel cover 4 and the extension tube 302.

[0031] A first annular sealing groove 42 is provided on the upper end face of the extension tube 302, and a first sealing ring 43 matching therewith is provided in the first sealing groove 42; a second annular sealing groove 44 is provided on the lower end face of the outer tube 8, and a second sealing ring 45 matching therewith is provided in the second sealing groove 44; the existence of the first sealing ring 43 can effectively ensure the sealing between the upper inner wall of the cylinder cover 4 and the upper end face of the extension tube 302; the existence of the second sealing ring 45 can effectively ensure the sealing between the lower end face of the outer tube 8 and the upper end face of the impurity cylinder 301, thereby ensuring the sealing when the impurity cylinder 301 and the extension tube 302 are assembled into the processing cylinder 3.

Claims

1. A zero-pollution production tailwater treatment device, comprising a machine base, characterized in that: A positioning groove is provided at the center of the upper surface of the machine base; an impurity barrel is provided just above the machine base; the barrel mouth of the impurity barrel faces upward, and the lower end of the impurity barrel is stuck in the positioning groove; an extension tube coaxial with the impurity barrel is provided above the impurity barrel, and half of the length of the extension tube is greater than the length of the impurity barrel; the extension tube and the impurity barrel are spliced ​​together to form a processing barrel; a barrel cover is covered with a barrel cover on the upper end of the extension tube; a drainage hole is provided on the upper surface of the barrel cover, which is connected to the internal space of the extension tube; a plug matching it is screwed in the drainage hole; an annular inner tube is extended upward from the edge of the barrel mouth of the upper end of the impurity barrel; an outer tube is extended downward from the outer edge of the lower end face of the extension tube to be set outside the inner tube, and the lower end face of the outer tube is in contact with the upper end face of the impurity barrel; a limiting device matching with the impurity barrel is provided on the upper surface of the machine base; a lifting device matching with the extension tube is provided on the upper surface of the machine base; a filtering device matching with it is provided in the impurity barrel; an extrusion device matching with the filtering device is provided on the barrel cover; a water inlet device is provided on the outer wall of the lower end of the impurity barrel.

2. The zero-pollution production tail water treatment equipment according to claim 1 is characterized by: The water inlet device includes a water inlet joint arranged on the rear side wall of the lower part of the impurity barrel; a first screw hole is arranged at the center of the rear end face of the water inlet joint; a water inlet hole that is connected to the internal space of the impurity barrel is arranged at the center of the bottom of the first screw hole; a sealing head matching with it is screwed in the first screw hole; a sealing rod matching with the water inlet hole is arranged at the center of the side wall of the sealing head that fits with the bottom of the first screw hole; a card groove is arranged at the center of the side wall of the sealing head away from the bottom of the first screw hole, and the card groove is a regular hexagon.

3. A zero-pollution production tail water treatment equipment according to claim 2, characterized in that: The filtering device comprises a lower filter plate and an upper filter plate arranged in the impurity barrel, the lower filter plate is located above the water inlet hole, and the upper filter plate is located above the lower filter plate; the lower filter plate is provided with a plurality of evenly distributed lower filter holes; the upper filter plate is provided with a plurality of evenly distributed upper filter holes; the diameter of the upper filter hole is smaller than the diameter of the lower filter hole; the inner walls on the left and right sides of the impurity barrel are provided with mutually symmetrical limiting grooves, and the notches at the upper ends of the limiting grooves are located on the upper end surface of the inner tube; the left and right sides of the outer wall of the lower filter plate are provided with lower sliders matching the limiting grooves; the left and right sides of the outer wall of the upper filter plate are provided with upper sliders matching the limiting grooves, and the upper surface of the upper slider is coplanar with the upper surface of the upper filter plate; the upper surface of the upper slider is in contact with the lower end surface of the extension tube; the center of the upper surface of the lower filter plate is provided with a second screw hole; the center of the upper filter plate is provided with a through hole coaxial with the second screw hole; a screw is screwed in the second screw hole; the upper end of the screw passes through the through hole upward; the screw is screwed with an upper nut in contact with the upper surface of the upper filter plate and a lower nut in contact with the lower surface of the lower filter plate.

4. The zero-pollution production tail water treatment equipment according to claim 3 is characterized by: The extrusion device includes an extrusion cylinder arranged at the center of the upper surface of the cylinder cover; the lower end of the piston rod of the extrusion cylinder passes downward through the cylinder cover and is provided with an extrusion plate matching the extension tube; the extrusion plate is provided with a plurality of water holes corresponding to the positions of the upper filter holes; the outer edge of the lower filter plate is provided with a plurality of guide holes evenly distributed in a circumference; the lower inner wall of the impurity barrel is provided with a plurality of third screw holes coaxial with the guide holes; the lower end of a guide rod is screwed into the third screw hole, and the upper end of the guide rod is upwardly inserted into the guide hole; a spring set outside the guide rod is provided between the lower surface of the lower filter plate and the lower inner wall of the impurity barrel; and a receiving groove matching the upper end of the screw rod is provided at the center of the lower surface of the extrusion plate.

5. The zero-pollution production tail water treatment equipment according to claim 1 is characterized by: The limiting device includes a limiting step arranged on the outer wall of the upper end of the impurity barrel, and the limiting step is annular; the impurity barrel is outer-circumferentially provided with a limiting sleeve that fits with the limiting step; the outer wall of the limiting sleeve is provided with a plurality of extension arms that are evenly distributed in a circle; the outer end of the extension arm is provided with a fixing foot that fits with the upper surface of the machine base; the fixing foot and the machine base, and the barrel cover and the upper end of the extension tube are all fixed by screws.

6. The zero-pollution production tail water treatment equipment according to claim 1 is characterized by: The lifting device comprises a lifting plate arranged on the outer wall of the extension tube; the lower surface of the machine base is provided with a plurality of lifting cylinders located below the lifting plate, and the upper ends of the piston rods of the lifting cylinders are arranged on the lower surface of the lifting plate.

7. The zero-pollution production tail water treatment equipment according to claim 1 is characterized by: The upper end surface of the extension tube is provided with a first annular sealing groove; a first sealing ring matching the first sealing groove is provided in the first sealing groove; the lower end surface of the outer tube is provided with a second annular sealing groove; a second sealing ring matching the second sealing groove is provided in the second sealing groove.

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