Wastewater treatment equipment and sanitary paper pulp production wastewater treatment method

Abstract

The invention relates to the technical field of wastewater treatment equipment, and discloses wastewater treatment equipment and a sanitary paper pulp production wastewater treatment method.The wastewater treatment equipment comprises a supporting frame, a wastewater treatment tank is installed in the supporting frame, a sewage inlet is formed in the top of the wastewater treatment tank, and a hydraulic telescopic rod is installed at the bottom of the sewage inlet; a sewage filter cartridge is mounted in the wastewater treatment tank, and sewage filter holes are formed in the sewage filter cartridge. When a lower extrusion plate moves downwards to extrude solid pollutants in a separation section of the sewage filter cartridge, a lower connecting rod slides up and down in a connecting sleeve; when more pollutants are accumulated on the pollutant storage plate, the lower extrusion plate moves downwards to drive the pollutant storage mechanism to integrally descend to collect the solid pollutants and then discharge the solid pollutants in a unified manner, so that the influence on the subsequent filtering efficiency of the solid pollutants due to accumulation of the solid pollutants in the sewage filter cartridge is prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of wastewater treatment equipment, and specifically relates to a wastewater treatment equipment and a method for treating wastewater from toilet paper pulp production. Background Art

[0002] During the industrial production process, various wastewaters with different components are often generated. The wastewater generated during the production of toilet paper pulp not only contains various chemical pollutants but also contains some solid pollutants such as residual fiber wood.

[0003] Chinese Patent CN117599487B discloses a wastewater treatment equipment for pulp manufacturing, including a stable base. A stable column, a first positioning frame, and an extension frame are installed on the stable base. A locking bolt is installed on one side of the first positioning frame, and a set of first drainage structures and two sets of second drainage structures are installed on the outer side of the stable column. There are three separation screens, and the filter holes of the three separation screens decrease from top to bottom. The wastewater and the waste paper doped in the wastewater are separated by the three separation screens. The wastewater discharged from the pulp manufacturing equipment enters the inside of the positioning seat through the wastewater connection sleeve, and then the wastewater enters the inside of the separation screen in turn under the drainage of the inclined drainage holes in the positioning seat.

[0004] In the above patent and the prior art, during the wastewater treatment process of toilet paper pulp, it is necessary to first filter the solid pollutants in the toilet paper pulp through a screen. When the traditional treatment equipment filters the solid pollutants in the wastewater, the solid pollutants remain on the screen. After working for a long time, the screen needs to be replaced or cleaned, otherwise it will seriously affect the cleaning efficiency of the solid pollutants in the wastewater. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a wastewater treatment equipment and a method for treating wastewater from toilet paper pulp production.

[0006] A wastewater treatment equipment includes a support frame. A wastewater treatment tank is installed inside the support frame. A sewage inlet is provided at the top of the wastewater treatment tank. A hydraulic telescopic rod is installed at the bottom of the sewage inlet. A sewage filtering cylinder is installed inside the wastewater treatment tank. Sewage filtering holes are opened inside the sewage filtering cylinder. The bottom of the hydraulic telescopic rod is connected to a sewage extrusion mechanism. The bottom of the sewage extrusion mechanism is connected to a pollutant collection mechanism. The bottom of the sewage filtering cylinder is connected to a pollutant discharge port. A sewage outlet is opened at the bottom of the wastewater treatment tank; The sewage filtering cylinder divides the interior of the wastewater treatment tank. The upper part of the sewage filtering cylinder is a conical filtering section, the middle part of the sewage filtering cylinder is a dividing section with a smaller diameter, the lower part of the sewage filtering cylinder is a discharging section, and the sewage filtering holes are opened in the lower half of the upper filtering section and the upper half of the dividing section of the sewage filtering cylinder. Both the sewage squeezing mechanism and the pollutant collection mechanism are located in the dividing section of the sewage filtering cylinder; The hydraulic telescopic rod can drive the sewage squeezing mechanism to move up and down in the filtering section inside the sewage filtering cylinder. When the sewage squeezing mechanism moves up and down, it can squeeze the solid pollutants inside the filtering section of the sewage filtering cylinder. When the solid pollutants inside the filtering section of the sewage filtering cylinder increase, the downward movement of the sewage squeezing mechanism can drive the pollutant collection mechanism to move downward. When the pollutant collection mechanism moves downward, it can discharge the solid pollutants from the discharging section of the sewage filtering cylinder.

[0007] Preferably, the sewage filtering cylinder can divide the interior of the wastewater treatment tank, the sewage squeezing mechanism and the pollutant collection mechanism can divide the interior of the sewage filtering cylinder, and the sewage squeezing mechanism and the pollutant collection mechanism are slidably connected; The sewage squeezing mechanism can move between the filtering section and the dividing section on the sewage filtering cylinder, and the pollutant collection mechanism can move between the dividing section and the discharging section on the sewage filtering cylinder. When the sewage squeezing mechanism moves upward, it can make the solid pollutants enter the interior of the dividing section of the sewage filtering cylinder. When the pollutant collection mechanism moves downward, it can discharge the pollutants inside the dividing section of the sewage filtering cylinder.

[0008] Preferably, the sewage squeezing mechanism includes a lifting connecting rod, the lifting connecting rod is connected to the movable end of the hydraulic telescopic rod, a lower squeezing plate is fixedly connected to the bottom of the lifting connecting rod, lower filtering holes are opened inside the lower squeezing plate, an upper movable plate is slidably installed outside the lifting connecting rod, upper filtering holes are opened inside the upper movable plate, and a lower connecting rod is connected to the bottom of the lower squeezing plate.

[0009] Preferably, the outside of the lower squeezing plate and the outside of the upper movable plate are both in contact with the inside of the dividing section of the sewage filtering cylinder. The lower squeezing plate is connected to the driving end of the hydraulic telescopic rod through the lifting connecting rod, and the diameter of the upper part of the lifting connecting rod is larger than the diameter of the lower part of the lifting connecting rod; When the hydraulic telescopic rod drives the lifting connecting rod to move downward, it can first drive the lower extrusion plate to move downward and drive the upper movable plate to contact the sewage filter cylinder. When the lower extrusion plate moves downward, it can extrude the solid pollutants inside the separated section of the sewage filter cylinder. During the downward movement of the lifting connecting rod, it can continue to drive the upper movable plate to move downward through the thicker upper part. When the upper movable plate continues to move downward, it can enter the separated section of the sewage filter cylinder.

[0010] Preferably, the lower filter holes are arranged on the outer side inside the lower extrusion plate, and the upper filter holes are arranged on the inner side of the upper movable plate. When the top of the lower extrusion plate contacts the bottom of the upper movable plate, liquid pollutants cannot pass through the lower filter holes and the upper filter holes. When the lower extrusion plate and the upper movable plate are separated, liquid pollutants can pass through the inside of the lower filter holes and the upper filter holes; When the lifting connecting rod drives the lower extrusion plate to move upward, it can make the top of the lower extrusion plate contact the bottom of the upper movable plate. During the upward movement of the lower extrusion plate, it can discharge the liquid pollutants inside the separated section of the sewage filter cylinder. When the lifting connecting rod moves upward, it can drive the lower extrusion plate and the upper movable plate to move upward.

[0011] Preferably, the pollutant collection mechanism includes a connecting sleeve and a limiting support plate. The connecting sleeve is slidably installed outside the lower connecting rod. The limiting support plate is installed inside the discharge section of the sewage filter cylinder. A sleeve partition plate is installed inside the connecting sleeve. A connecting spring is connected to the bottom of the sleeve partition plate. The movable end of the connecting spring is connected to a lifting connecting block. The bottom of the lifting connecting block is connected to a lifting cone block. A lifting chute is arranged inside the lifting cone block. A lifting limit block is connected to the bottom of the lifting cone block. A discharge telescopic rod is slidably installed inside the lifting chute. An auxiliary discharge plate is connected to the outside of the discharge telescopic rod. A pollutant storage plate is installed outside the connecting sleeve.

[0012] Preferably, the connecting sleeve is slidably installed inside the separated section of the sewage filter cylinder through the pollutant storage plate, and the outside of the pollutant storage plate fits with the inside of the separated section of the sewage filter cylinder; The pollutant storage plate can seal the bottom of the separated section of the sewage filter cylinder, and the pollutant storage plate can prevent the solid pollutants inside the separated section of the sewage filter cylinder from directly discharging through the discharge end of the sewage filter cylinder.

[0013] Preferably, the connecting sleeve is slidably connected to the bottom of the lower extrusion plate through the lower connecting rod. The inside of the connecting sleeve is divided into upper and lower parts by the sleeve partition plate. The lower connecting rod can move up and down inside the upper half of the connecting sleeve; When the lower extrusion plate moves up and down, it can drive the lower connecting rod to move up and down inside the connecting sleeve. When there is too much solid pollutant accumulated between the lower extrusion plate and the pollutant storage plate, the downward movement of the lower extrusion plate can drive the pollutant storage plate to move downward. When the pollutant storage plate moves downward, it can release the seal on the bottom of the sewage filtration cylinder partition section. When the pollutant storage plate moves downward, it can contact the limit support plate through the lifting limit block. When the lifting limit block contacts the limit support plate and the pollutant storage plate continues to move downward, it can drive the lifting cone block to move upward inside the connecting sleeve.

[0014] Preferably, the outside of the connecting sleeve is of an inclined structure, and one end of the discharge telescopic rod passes through the connecting sleeve and is connected to the auxiliary discharge plate; When the lifting cone block moves upward, it can drive the discharge telescopic rod to move outside the connecting sleeve. When the discharge telescopic rod moves, it can synchronously drive the auxiliary discharge plate to move to copy and discharge the solid pollutants on the pollutant storage plate.

[0015] A method for treating wastewater from toilet paper pulp production uses the above-mentioned wastewater treatment equipment.

[0016] Compared with the prior art, the present invention provides a wastewater treatment equipment and a method for treating wastewater from toilet paper pulp production, which have the following beneficial effects: 1. For this kind of wastewater treatment equipment, when the lower extrusion plate moves downward to extrude the solid pollutants inside the sewage filtration cylinder partition section, the lower connecting rod slides up and down inside the connecting sleeve. And when the lower extrusion plate extrudes the solid pollutants inside the sewage filtration cylinder partition section, the solid pollutants remain on the top of the pollutant storage plate. When there is a large amount of pollutants accumulated on the pollutant storage plate, the downward movement of the lower extrusion plate can drive the whole pollutant storage mechanism to descend to collect the solid pollutants and then discharge them uniformly, thereby preventing the accumulation of solid pollutants inside the sewage filtration cylinder from affecting the subsequent filtration efficiency of the solid pollutants.

[0017] 2. For this kind of wastewater treatment equipment, when working, the flowing sewage flushes the solid pollutants into the sewage filtration cylinder partition section, and the hydraulic telescopic rod can drive the lower extrusion plate to move up and down inside the sewage filtration cylinder partition section during the telescopic process to extrude the solid pollutants inside the sewage filtration cylinder partition section. By extruding the solid pollutants with the lower extrusion plate, the sewage in the solid pollutants can be extruded out to improve the separation efficiency of the solid pollutants in the sewage. Description of the Drawings

[0018] Figure 1 Schematic three-dimensional structure of a wastewater treatment equipment of the present invention Figure 1 ; Figure 2Schematic three - dimensional structure of a wastewater treatment device of the present invention Figure 2 ; Figure 3 Schematic internal structure of a wastewater treatment device of the present invention Figure 1 ; Figure 4 Schematic internal structure of a wastewater treatment device of the present invention Figure 2 ; Figure 5 Schematic internal structure diagram of the sewage filtration cylinder partition section of a wastewater treatment device of the present invention; Figure 6 Schematic three - dimensional structure diagram of the sewage extrusion mechanism of a wastewater treatment device of the present invention; Figure 7 Schematic internal structure of the pollutant collection mechanism of a wastewater treatment device of the present invention Figure 1 ; Figure 8 Schematic internal structure of the pollutant collection mechanism of a wastewater treatment device of the present invention Figure 2 。

[0019] In the figure: 1, support frame; 2, wastewater treatment tank; 3, sewage inlet; 4, hydraulic telescopic rod; 5, sewage filtration cylinder; 6, sewage filtration hole; 7, sewage extrusion mechanism; 71, lifting connecting rod; 72, lower extrusion plate; 73, lower filtration hole; 74, upper movable plate; 75, upper filtration hole; 76, lower connecting rod; 8, pollutant collection mechanism; 81, connecting sleeve; 82, sleeve partition plate; 83, connecting spring; 84, lifting connection block; 85, lifting cone block; 86, lifting chute; 87, lifting limit block; 88, discharging telescopic rod; 89, auxiliary discharging plate; 810, pollutant storage plate; 811, limit support plate; 9, pollutant discharge outlet; 10, sewage outlet. Detailed implementation manners

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with 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. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] As introduced in the background technology, there are deficiencies in the prior art. To solve the above - mentioned technical problems, the present application proposes a wastewater treatment device and a method for treating wastewater from toilet paper pulp production.

[0022] Embodiment 1

[0023] Please refer to Figure 1 -Figure 8 , a wastewater treatment device, comprising a support frame 1. Inside the support frame 1, a wastewater treatment tank 2 is installed. At the top of the wastewater treatment tank 2, a sewage inlet 3 is provided. At the bottom of the sewage inlet 3, a hydraulic telescopic rod 4 is installed. Inside the wastewater treatment tank 2, a sewage filtering cylinder 5 is installed. Inside the sewage filtering cylinder 5, sewage filtering holes 6 are opened. At the bottom of the hydraulic telescopic rod 4, a sewage extrusion mechanism 7 is connected. At the bottom of the sewage extrusion mechanism 7, a pollutant collection mechanism 8 is connected. At the bottom of the sewage filtering cylinder 5, a pollutant discharge port 9 is connected. At the bottom of the wastewater treatment tank 2, a sewage outlet 10 is opened; The sewage filtering cylinder 5 divides the inside of the wastewater treatment tank 2. The upper part of the sewage filtering cylinder 5 is a conical filtering section, the middle part of the sewage filtering cylinder 5 is a partition section with a smaller diameter, and the lower part of the sewage filtering cylinder 5 is a discharging section. The sewage filtering holes 6 are opened in the lower half of the upper filtering section and the upper half of the partition section of the sewage filtering cylinder 5. Both the sewage extrusion mechanism 7 and the pollutant collection mechanism 8 are located in the partition section of the sewage filtering cylinder 5; The hydraulic telescopic rod 4 can drive the sewage extrusion mechanism 7 to move up and down in the filtering section inside the sewage filtering cylinder 5. When the sewage extrusion mechanism 7 moves up and down, it can extrude the solid pollutants inside the filtering section of the sewage filtering cylinder 5. When the solid pollutants inside the filtering section of the sewage filtering cylinder 5 increase, the sewage extrusion mechanism 7 descends and can drive the pollutant collection mechanism 8 to move downward. When the pollutant collection mechanism 8 moves downward, it can discharge the solid pollutants from the discharging section of the sewage filtering cylinder 5, and the discharged pollutants are then discharged from the inside of the wastewater treatment tank 2 through the pollutant discharge port 9.

[0024] When working, external sewage can enter the interior of the wastewater treatment tank 2 from the sewage inlet 3. The sewage that enters the interior of the wastewater treatment tank 2 directly enters the interior of the sewage filter cylinder 5. The sewage filter holes 6 on the sewage filter cylinder 5 can filter the solid pollutants in the sewage, while the liquid pollutants enter the lower half of the wastewater treatment tank 2 through the sewage filter holes 6 and then are discharged from the sewage outlet 10. The solid pollutants in the sewage remain inside the sewage filter cylinder 5. When the hydraulic telescopic rod 4 shortens, it can drive the sewage extrusion mechanism 7 to move upward. When the sewage extrusion mechanism 7 moves upward, the solid pollutants in the sewage enter the internal partition section of the sewage filter cylinder 5. Then, when the hydraulic telescopic rod 4 extends to drive the sewage extrusion mechanism 7 to move downward, the sewage extrusion mechanism 7 can extrude the solid pollutants inside the internal partition section of the sewage filter cylinder 5 when it moves downward. When the sewage extrusion mechanism 7 extrudes the solid pollutants, it can compact the solid pollutants. When the sewage extrusion mechanism 7 moves upward, it can discharge the squeezed wastewater from the sewage filter holes 6. When the solid pollutants accumulate too much inside the internal partition section of the sewage filter cylinder 5, the hydraulic telescopic rod 4 drives the sewage extrusion mechanism 7 to move downward, which can drive the pollutant collection mechanism 8 to move downward synchronously. When the pollutant collection mechanism 8 moves downward, the pollutant collection mechanism 8 can release the seal on the bottom of the internal partition section of the sewage filter cylinder 5. After the pollutant collection mechanism 8 releases the seal on the bottom of the internal partition section of the sewage filter cylinder 5, the solid pollutants inside the internal partition section of the sewage filter cylinder 5 are discharged from the discharge end of the sewage filter cylinder 5, and the discharged pollutants are then discharged from the interior of the wastewater treatment tank 2 through the pollutant discharge outlet 9. During the process of filtering the solid pollutants in the sewage, the conical structure on the upper part of the sewage filter cylinder 5 can collect the solid pollutants into the internal partition section of the sewage filter cylinder 5 and then discharge them uniformly, thereby preventing the accumulation of solid pollutants inside the sewage filter cylinder 5 from affecting the subsequent filtering efficiency of the solid pollutants.

[0025] Embodiment 2

[0026] The difference from the above embodiment is as follows. Please refer to Figure 1 - Figure 8 , the sewage filter cylinder 5 can partition the interior of the wastewater treatment tank 2, the sewage extrusion mechanism 7 and the pollutant collection mechanism 8 can partition the interior of the sewage filter cylinder 5, and the sewage extrusion mechanism 7 and the pollutant collection mechanism 8 are slidably connected; The sewage extrusion mechanism 7 can move between the filtering section and the partition section on the sewage filter cylinder 5, the pollutant collection mechanism 8 can move between the partition section and the discharge section on the sewage filter cylinder 5. When the sewage extrusion mechanism 7 moves upward, it can cause the solid pollutants to enter the internal partition section of the sewage filter cylinder 5. When the pollutant collection mechanism 8 moves downward, it can discharge the pollutants inside the internal partition section of the sewage filter cylinder 5.

[0027] The sewage extrusion mechanism 7 includes a lifting connecting rod 71. The lifting connecting rod 71 is connected to the movable end of the hydraulic telescopic rod 4. A lower extrusion plate 72 is fixedly connected to the bottom of the lifting connecting rod 71. Lower filtering holes 73 are formed inside the lower extrusion plate 72. An upper movable plate 74 is slidably mounted outside the lifting connecting rod 71. Upper filtering holes 75 are formed inside the upper movable plate 74. A lower connecting rod 76 is connected to the bottom of the lower extrusion plate 72 The outside of the lower extrusion plate 72 and the outside of the upper movable plate 74 are both in contact with the inside of the partition section of the sewage filtering cylinder 5. The lower extrusion plate 72 is connected to the driving end of the hydraulic telescopic rod 4 through the lifting connecting rod 71. The upper diameter of the lifting connecting rod 71 is larger than the lower diameter of the lifting connecting rod 71; When the hydraulic telescopic rod 4 drives the lifting connecting rod 71 to move downward, it can first drive the lower extrusion plate 72 to move downward and drive the upper movable plate 74 to contact the sewage filtering cylinder 5. When the lower extrusion plate 72 moves downward, it can extrude the solid pollutants inside the partition section of the sewage filtering cylinder 5. During the downward movement of the lifting connecting rod 71, it can continue to drive the upper movable plate 74 to move downward through the thicker upper part. When the upper movable plate 74 continues to move downward, it can enter the inside of the partition section of the sewage filtering cylinder 5.

[0028] The lower filtering holes 73 are formed on the outer side inside the lower extrusion plate 72, and the upper filtering holes 75 are formed on the inner side of the upper movable plate 74. When the top of the lower extrusion plate 72 contacts the bottom of the upper movable plate 74, liquid pollutants cannot pass through the lower filtering holes 73 and the upper filtering holes 75. When the lower extrusion plate 72 and the upper movable plate 74 are separated, liquid pollutants can pass through the lower filtering holes 73 and the upper filtering holes 75; When the lifting connecting rod 71 drives the lower extrusion plate 72 to move upward, it can make the top of the lower extrusion plate 72 contact the bottom of the upper movable plate 74. When the lower extrusion plate 72 rises, it can discharge the liquid pollutants inside the partition section of the sewage filtering cylinder 5. When the lifting connecting rod 71 moves upward, it can drive the lower extrusion plate 72 and the upper movable plate 74 to move upward.

[0029] When the sewage flowing during work flushes the solid pollutants into the inner part of the partition section of the sewage filter cylinder 5, when the hydraulic telescopic rod 4 extends, it can drive the lifting connecting rod 71 to move downward synchronously. When the lifting connecting rod 71 moves downward, it can first drive the lower pressing plate 72 to move downward. When the lower pressing plate 72 moves downward, it can squeeze the solid pollutants in the inner part of the partition section of the sewage filter cylinder 5. During the process of the lower pressing plate 72 squeezing the solid pollutants, the sewage in the solid pollutants is discharged through the lower filter holes 73. During the downward movement, when the lifting connecting rod 71 continues to move downward, it can drive the upper movable plate 74 to move downward through the thicker upper part. When the upper movable plate 74 moves downward, the upper movable plate 74 can enter the inner part of the partition section of the sewage filter cylinder 5. After the lower pressing plate 72 finishes squeezing the solid pollutants, the hydraulic telescopic rod 4 drives the lifting connecting rod 71 to move upward. When the lifting connecting rod 71 moves upward, it first drives the lower pressing plate 72 to move upward. During the upward movement of the lower pressing plate 72, the lower pressing plate 72 can contact the upper movable plate 74. After the lower pressing plate 72 contacts the upper movable plate 74, the upward movement of the lower pressing plate 72 can drive the upper movable plate 74 to move synchronously. And after the lower pressing plate 72 contacts the upper movable plate 74 and continues to move upward, it can drive the sewage to move upward. During the upward movement of the sewage, it can be discharged through the sewage filter holes 6 inside the sewage filter cylinder 5. When the solid pollutants in the inner part of the partition section of the sewage filter cylinder 5 accumulate too much, the downward movement of the lower pressing plate 72 can drive the pollutant collection mechanism 8 to move downward through the solid pollutants. When the pollutant collection mechanism 8 moves downward, it can discharge the solid pollutants in the inner part of the partition section of the sewage filter cylinder 5. By squeezing the solid pollutants with the lower pressing plate 72, the sewage in the solid pollutants can be squeezed out, improving the separation efficiency of the solid pollutants in the sewage.

[0030] Embodiment III

[0031] The difference from the above embodiment is as follows. Please refer to Figure 1 - Figure 8 The pollutant collection mechanism 8 includes a connecting sleeve 81 and a limit support plate 811. The connecting sleeve 81 is slidably installed outside the lower connecting rod 76. The limit support plate 811 is installed inside the discharge section of the sewage filter cylinder 5. A sleeve partition plate 82 is installed inside the connecting sleeve 81. A connecting spring 83 is connected to the bottom of the sleeve partition plate 82. The movable end of the connecting spring 83 is connected to a lifting connection block 84. A lifting cone block 85 is connected to the bottom of the lifting connection block 84. A lifting chute 86 is formed inside the lifting cone block 85. A lifting limit block 87 is connected to the bottom of the lifting cone block 85. A discharge telescopic rod 88 is slidably installed inside the lifting chute 86. An auxiliary discharge plate 89 is connected to the outside of the discharge telescopic rod 88. A pollutant storage plate 810 is installed outside the connecting sleeve 81.

[0032] The connecting sleeve 81 is slidably installed inside the partition section of the sewage filtering cylinder 5 through the pollutant storage plate 810, and the outside of the pollutant storage plate 810 is in contact with the inside of the partition section of the sewage filtering cylinder 5; The pollutant storage plate 810 can seal the bottom of the partition section of the sewage filtering cylinder 5, and the pollutant storage plate 810 can prevent the solid pollutants inside the partition section of the sewage filtering cylinder 5 from directly discharging through the discharging end of the sewage filtering cylinder 5.

[0033] The connecting sleeve 81 is slidably connected to the bottom of the lower pressing plate 72 through the lower connecting rod 76. The inside of the connecting sleeve 81 is divided into upper and lower parts by the sleeve partition plate 82, and the lower connecting rod 76 can move up and down in the upper half of the connecting sleeve 81; When the lower pressing plate 72 moves up and down, it can drive the lower connecting rod 76 to move up and down inside the connecting sleeve 81. When there is too much accumulation of solid pollutants between the lower pressing plate 72 and the pollutant storage plate 810, the downward movement of the lower pressing plate 72 can drive the pollutant storage plate 810 to move downward. When the pollutant storage plate 810 moves downward, it can release the seal on the bottom of the partition section of the sewage filtering cylinder 5. When the pollutant storage plate 810 moves downward, it can contact the limit support plate 811 through the lifting limit block 87. When the lifting limit block 87 contacts the limit support plate 811, the continuous downward movement of the pollutant storage plate 810 can drive the lifting cone block 85 to move upward inside the connecting sleeve 81.

[0034] The outside of the connecting sleeve 81 is of an inclined structure, and one end of the discharging telescopic rod 88 passes through the connecting sleeve 81 and is connected to the auxiliary discharging plate 89; When the lifting cone block 85 moves upward, it can drive the discharging telescopic rod 88 to move outward from the connecting sleeve 81. When the discharging telescopic rod 88 moves, it can synchronously drive the auxiliary discharging plate 89 to move to copy and discharge the solid pollutants on the pollutant storage plate 810.

[0035] When the lower extrusion plate 72 moves downward to extrude the solid pollutants inside the partition section of the sewage filter cylinder 5, the lower connecting rod 76 slides up and down inside the connecting sleeve 81. And when the lower extrusion plate 72 extrudes the solid pollutants inside the partition section of the sewage filter cylinder 5, the solid pollutants remain on the top of the pollutant storage plate 810. When the lower extrusion plate 72 moves up and down repeatedly to extrude the solid pollutants, the solid pollutants on the top of the pollutant storage plate 810 also gradually accumulate. When the solid pollutants on the top of the pollutant storage plate 810 accumulate too much, the lower extrusion plate 72 moves downward and can drive the pollutant storage plate 810 to move downward through the solid pollutants. When the pollutant storage plate 810 moves downward, it can drive the lifting cone block 85 and the lifting limit block 87 to move downward synchronously through the discharge telescopic rod 88. When the lifting limit block 87 moves downward, the lifting limit block 87 can contact the limit support plate 811. After the lifting limit block 87 contacts the limit support plate 811, the continuous downward movement of the pollutant storage plate 810 can drive the lifting cone block 85 to move upward inside the connecting sleeve 81. When the lifting cone block 85 moves upward inside the connecting sleeve 81, it can drive the discharge telescopic rod 88 to move outside the connecting sleeve 81 through the lifting chute 86. When the discharge telescopic rod 88 moves outside the connecting sleeve 81, it can drive the auxiliary discharge plate 89 to push the solid pollutants on the pollutant storage plate 810, so that the solid pollutants are discharged from the inside of the partition section of the sewage filter cylinder 5. After the solid pollutants inside the partition section of the sewage filter cylinder 5 are discharged, the lower connecting rod 76 moves upward to drive the connecting sleeve 81 to move upward. When the connecting sleeve 81 moves upward, it can drive the pollutant storage plate 810 to move upward to seal the bottom of the partition section of the sewage filter hole 6. The solid pollutants are collected by the pollutant storage plate 810 and then discharged uniformly, so as to prevent the accumulation of solid pollutants inside the sewage filter cylinder 5 from affecting the subsequent filtration efficiency of the solid pollutants.

[0036] Embodiment 4

[0037] A method for treating toilet paper pulp production wastewater uses a wastewater treatment device as in Embodiments 1 to 3, and includes the following steps: First, inject sewage into the inside of the wastewater treatment tank 2 through the sewage inlet 3; The sewage filter holes 6 can filter the solid pollutants in the sewage, and the liquid pollutants enter the lower half of the wastewater treatment tank 2 through the sewage filter holes 6, while the solid pollutants in the sewage remain inside the partition section of the sewage filter cylinder 5; The hydraulic telescopic rod 4 can drive the sewage extrusion mechanism 7 to move up and down to repeatedly extrude the solid pollutants inside the partition section of the sewage filter cylinder 5; When the solid pollutants inside the partition section of the sewage filter cylinder 5 accumulate too much, the downward movement of the sewage extrusion mechanism 7 can drive the pollutant collection mechanism 8 to move downward; When the pollutant collection mechanism 8 moves downward, it can uniformly discharge the solid pollutants inside the partition section of the sewage filter cylinder 5.

[0038] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wastewater treatment device, comprising a support frame, characterized in that: A wastewater treatment tank is installed inside the support frame, a sewage inlet is arranged on the top of the wastewater treatment tank, a hydraulic telescopic rod is installed at the bottom of the sewage inlet, a sewage filter cartridge is installed inside the wastewater treatment tank, a sewage filter hole is opened inside the sewage filter cartridge, a sewage squeezing mechanism is connected to the bottom of the hydraulic telescopic rod, a pollutant collecting mechanism is connected to the bottom of the sewage squeezing mechanism, a pollutant discharge port is connected to the bottom of the sewage filter cartridge, and a sewage outlet is opened at the bottom of the wastewater treatment tank; The sewage filter cartridge divides the interior of the wastewater treatment tank, the upper part of the sewage filter cartridge is a conical filter section, the middle part of the sewage filter cartridge is a partition section with a smaller diameter, the lower part of the sewage filter cartridge is a discharge section, the sewage filter holes are provided in the lower half of the filter section and the upper half of the partition section of the sewage filter cartridge, and the sewage squeezing mechanism and the pollutant collecting mechanism are both located in the partition section on the sewage filter cartridge; The hydraulic telescopic rod can drive the sewage squeezing mechanism to move up and down in the filtering section inside the sewage filter cylinder. When the sewage squeezing mechanism moves up and down, it can squeeze the solid pollutants inside the filtering section of the sewage filter cylinder. When the solid pollutants inside the filtering section of the sewage filter cylinder increase, the sewage squeezing mechanism descends and can drive the pollutant collecting mechanism to move downward. When the pollutant collecting mechanism moves downward, it can discharge the solid pollutants from the discharge section of the sewage filter cylinder.

2. A wastewater treatment equipment according to claim 1, characterized in that: The sewage filter cartridge can separate the interior of the wastewater treatment tank, the sewage squeezing mechanism and the pollutant collecting mechanism can separate the interior of the sewage filter cartridge, and the sewage squeezing mechanism and the pollutant collecting mechanism are slidably connected; The sewage squeezing mechanism can move between the filtering section and the partition section on the sewage filter cartridge, and the pollutant collecting mechanism can move between the partition section and the discharge section on the sewage filter cartridge. When the sewage squeezing mechanism moves upward, solid pollutants can enter the interior of the partition section of the sewage filter cartridge, and when the pollutant collecting mechanism moves downward, pollutants inside the partition section of the sewage filter cartridge can be discharged.

3. A wastewater treatment equipment according to claim 2, characterized in that: The sewage squeezing mechanism includes a lifting connecting rod, which is connected to the movable end of the hydraulic telescopic rod. The bottom of the lifting connecting rod is fixedly connected to a lower squeezing plate, and a lower filtering hole is opened inside the lower squeezing plate. An upper movable plate is slidably installed outside the lifting connecting rod, and an upper filtering hole is opened inside the upper movable plate. The bottom of the lower squeezing plate is connected to the lower connecting rod.

4. A wastewater treatment equipment according to claim 3, characterized in that: The outer part of the lower extrusion plate and the outer part of the upper movable plate are both fitted with the inner part of the separation section of the sewage filter cartridge, and the lower extrusion plate is connected to the driving end of the hydraulic telescopic rod through a lifting connecting rod, and the upper diameter of the lifting connecting rod is larger than the lower diameter of the lifting connecting rod; When the hydraulic telescopic rod drives the lifting connecting rod to move downward, it can first drive the lower extrusion plate to move downward and drive the upper movable plate to contact the sewage filter cylinder. When the lower extrusion plate moves downward, it can squeeze the solid pollutants inside the separation section of the sewage filter cylinder. During the downward movement of the lifting connecting rod, it can continue to drive the upper movable plate to move downward through the thicker upper part. When the upper movable plate continues to move downward, it can enter the interior of the separation section of the sewage filter cylinder.

5. A wastewater treatment equipment according to claim 4, characterized in that: The lower filter holes are arranged on the outer side of the lower squeeze plate, and the upper filter holes are arranged on the inner side of the upper movable plate. When the top of the lower squeeze plate contacts the bottom of the upper movable plate, liquid pollutants cannot pass through the lower filter holes and the upper filter holes. When the lower squeeze plate and the upper movable plate are separated, liquid pollutants can pass through the lower filter holes and the upper filter holes. When the lifting connecting rod drives the lower extrusion plate to move upward, the top of the lower extrusion plate can contact the bottom of the upper movable plate. The lower extrusion plate can discharge liquid pollutants inside the separation section of the sewage filter cylinder during the rising process. When the lifting connecting rod moves upward, it can drive the lower extrusion plate and the upper movable plate to move upward.

6. A wastewater treatment equipment according to claim 5, characterized in that: The pollutant collecting mechanism includes a connecting sleeve and a limiting support plate, the connecting sleeve is slidably installed on the outside of the lower connecting rod, the limiting support plate is installed inside the discharge section of the sewage filter cylinder, a sleeve partition plate is installed inside the connecting sleeve, the bottom of the sleeve partition plate is connected with a connecting spring, the movable end of the connecting spring is connected with a lifting connecting block, the bottom of the lifting connecting block is connected with a lifting cone block, a lifting groove is provided on the inner side of the lifting cone block, a lifting limiting block is connected to the bottom of the lifting cone block, a discharging telescopic rod is slidably installed inside the lifting groove, the outside of the discharging telescopic rod is connected with an auxiliary discharging plate, and a pollutant storage plate is installed outside the connecting sleeve.

7. A wastewater treatment equipment according to claim 6, characterized in that: The connecting sleeve is slidably mounted inside the partition section of the sewage filter cartridge via a pollutant storage plate, and the outside of the pollutant storage plate fits inside the partition section of the sewage filter cartridge; The pollutant storage plate can seal the bottom of the sewage filter cartridge partition section, and the pollutant storage plate can prevent the solid pollutants inside the sewage filter cartridge partition section from being directly discharged through the sewage filter cartridge discharge end.

8. A wastewater treatment equipment according to claim 7, characterized in that: The connecting sleeve is slidably connected to the bottom of the lower extrusion plate through a lower connecting rod, the interior of the connecting sleeve is divided into upper and lower parts by a sleeve partition plate, and the lower connecting rod can move up and down in the upper part of the connecting sleeve; When the lower extrusion plate moves up and down, it can drive the lower connecting rod to move up and down inside the connecting sleeve. When too much solid pollutants are accumulated between the lower extrusion plate and the pollutant storage plate, the lower extrusion plate moves downward, which can drive the pollutant storage plate to move downward. When the pollutant storage plate moves downward, it can release the seal on the bottom of the sewage filter cartridge partition section. When the pollutant storage plate moves downward, it can contact the limit support plate through the lifting limit block. When the lifting limit block contacts the limit support plate, the pollutant storage plate continues to move downward, which can drive the lifting cone block to move upward inside the connecting sleeve.

9. A wastewater treatment equipment according to claim 8, characterized in that: The exterior of the connecting sleeve is an inclined structure, and one end of the discharging telescopic rod passes through the connecting sleeve and is connected to the auxiliary discharging plate; When the lifting cone block moves upward, it can drive the discharge telescopic rod to move toward the outside of the connecting sleeve. When the discharge telescopic rod moves, it can synchronously drive the auxiliary discharge plate to move to copy and discharge the solid pollutants on the pollutant storage plate.

10. A method for treating wastewater from toilet paper pulp production, using a wastewater treatment device as claimed in any one of claims 1 to 9, comprising the following steps; First, the sewage is injected into the interior of the wastewater treatment tank through the sewage inlet; The sewage filter holes can filter solid pollutants in the sewage, while liquid pollutants enter the lower half of the wastewater treatment tank through the sewage filter holes, while solid pollutants in the sewage remain inside the partition section of the sewage filter cylinder; The hydraulic telescopic rod can drive the sewage squeezing mechanism to move up and down to repeatedly squeeze the solid pollutants inside the separation section of the sewage filter cartridge; When too much solid pollutants are accumulated inside the separation section of the sewage filter cartridge, the sewage squeezing mechanism moves downward to drive the pollutant collecting mechanism to move downward; When the pollutant collecting mechanism moves downward, the solid pollutants inside the separation section of the sewage filter cartridge can be discharged uniformly.

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