Papermaking water treatment equipment

Abstract

The invention discloses papermaking water treatment equipment, and relates to the technical field of sewage treatment. The device comprises a tank body, a biological treatment tank is fixedly installed in the tank body, a purification tank is attached to the interior of the tank body, a purification mechanism is arranged in the biological treatment tank, and the purification mechanism comprises an air inlet hole, a pressure control pipe, a second exhaust block, a second reserved hole, a second sliding rod, a second spring, a first fixing plate and a sealing ring. Sewage is discharged into the biological treatment tank through a water inlet pipe II, a heating wire is started, and the biological treatment tank is heated through the heating wire, so that nitrate in water is reduced into ammonia gas and carbon dioxide is generated by denitrifying bacteria in the biological treatment tank, and the air pressure in the biological treatment tank is increased; according to the ammonia gas collecting and purifying device, the problem that ammonia gas generated in the sewage treatment process pollutes the environment is effectively solved, the effect of collecting and purifying the ammonia gas can be achieved, meanwhile, the conversion efficiency of the sewage is improved, and the time required for treatment is shortened.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, and in particular to a papermaking water treatment device. Background Art

[0002] In industries such as papermaking, the papermaking process is accompanied by the generation of sewage, which needs to be treated before it can be discharged. Papermaking sewage treatment is a multi-step process that aims to remove harmful substances in the water and ensure that the wastewater meets discharge standards or can be recycled. By adding coagulants (such as alum or polyaluminium chloride and other chemical agents), the fine suspended matter and colloidal substances in the sewage are aggregated into larger particles to facilitate further sedimentation. This process is called coagulation sedimentation, which effectively removes most of the organic matter and suspended matter in the water. The sewage after chemical treatment enters the biological treatment stage.

[0003] In the actual use of existing sewage treatment equipment, nitrates are reduced to nitrogen (N2) or ammonia (NH3) through the reaction of denitrifying bacteria in an anaerobic environment. Especially under conditions of high pH or high temperature, ammonia nitrogen (NH4 + ) is more easily converted into ammonia (NH3) and released into the gas, but in actual use, denitrifying bacteria will produce carbon dioxide in addition to ammonia during the reaction. After mixing with ammonia, the ammonia will be impure, and high-purity ammonia cannot be effectively collected. The gas still needs to be purified after being discharged from the device. At the same time, during the reaction of denitrifying bacteria, the air pressure inside the reaction tank will gradually increase due to its continuous reaction. If the air pressure is too high, it will cause damage to the reaction tank. Summary of the invention

[0004] The purpose of the present invention is to solve the above problems and provide a papermaking water treatment device.

[0005] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0006] A papermaking water treatment device comprises a tank body, a biological treatment tank is fixedly installed inside the tank body, a purification tank is bonded inside the tank body, a purification mechanism is arranged inside the biological treatment tank, the purification mechanism comprises an air inlet, a pressure control tube, two exhaust blocks, two reserved holes, two slide bars, two springs, one fixed plate and a sealing ring, the pressure control tube is fixedly connected to the biological treatment tank, the pressure control tube is bonded to the purification tank, the fixing plate one is fixedly connected to the pressure control tube, one end of the spring two is fixedly connected to the fixing plate one, the other end of the spring two is fixedly connected to the sliding bar two, the sealing ring is fixedly connected to the pressure control tube, the sealing ring is bonded to the sliding bar two, and the exhaust block two is fixedly connected to the pressure control tube;

[0007] A pressure reducing mechanism is provided inside the tank body, and the pressure reducing mechanism includes a spring, a slide bar, a reserved hole, a connecting pipe, a pressure reducing block, and an exhaust block. One end of the spring is fixedly connected to a fixed plate, and the other end of the spring is fixedly connected to a slide bar. The slide bar is fitted with the inner wall of the pressure controlling tube, the pressure controlling tube is fixedly connected to the pressure reducing block, the slide bar is slidably connected to the inner wall of the pressure controlling tube, the connecting pipe is fixedly connected to the pressure reducing block, the connecting pipe is fixedly connected to the biological treatment tank, the connecting pipe is fitted with the purification tank, and the connecting pipe is fixedly connected to the exhaust block.

[0008] Furthermore, a fixing plate 2 is fixedly connected to the surface of the pressure control tube, a receiving block 2 is fixedly connected to the upper surface of the fixing plate 2, a hinged seat is fixedly installed on the upper surface of the receiving block 2, a latching tooth is rotatably connected inside the hinged seat, two groups of racks are fixedly connected to the lower surface of the purification tank, both groups of racks are latched with the latching teeth, a spring 5 is fixedly connected to the lower surface of the latching tooth, and the spring 5 is fixedly connected to the fixing plate 2.

[0009] Furthermore, an exhaust pipe is fixedly installed on the upper surface of the tank body, a water inlet pipe 1 is fixedly installed on the upper surface of the tank body, a water inlet pipe 2 is fixedly connected to the surface of the tank body, and the water inlet pipe 2 is fixedly connected to the biological treatment tank, a water outlet pipe 1 is fixedly connected to the surface of the tank body, and the water outlet pipe 1 is fixedly connected to the biological treatment tank, and a water outlet pipe 2 is fixedly connected to the surface of the tank body, and the water outlet pipe 2 is fixedly connected to the purification tank.

[0010] Furthermore, a fixed block is fixedly connected to the surface of the tank body, two groups of cover plates are rotatably connected inside the fixed block, and sliders are slidably connected inside the two groups of cover plates. A spring four is fixedly connected to the upper surface of the slider, and a clamping plate is fixedly connected to the upper end of the spring four. The clamping plate is slidably connected to the cover plate, and the clamping plate is clamped to the fixed block. A receiving block one is fixedly connected to one side of the slider, and the receiving block one is fitted with the cover plate.

[0011] Furthermore, connecting pipes are fixedly installed on the surfaces of the biological treatment tank and the purification tank, and sealing plugs are attached to the upper ends of the connecting pipes.

[0012] Furthermore, two groups of clamping blocks are fixedly connected to the upper surface of the sealing plug, a spring three is fixedly connected to the upper surface of the sealing plug, and the upper end of the spring three is fixedly connected to the fixing block.

[0013] Furthermore, a vertical ladder is fixedly installed on the surface of the tank body.

[0014] Furthermore, a limit block is fixedly installed inside the fixing block, two groups of sliding grooves are opened on the surface of the limit block, and the limit block and the sealing plug are located in the same vertical plane.

[0015] Furthermore, a heating wire is fixedly installed on the lower surface of the biological treatment tank.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. The present invention discharges sewage into the interior of the biological treatment tank through the water inlet pipe 2, starts the heating wire, and heats the biological treatment tank through the heating wire, so that the denitrifying bacteria in the biological treatment tank reduce the nitrate in the water into ammonia and generate carbon dioxide, so that the air pressure inside the biological treatment tank increases. As the air pressure inside the biological treatment tank gradually increases, the spring 2 is stretched, so that the slide bar 2 moves vertically upward along the inner wall of the sealing ring, so that the gas inside the biological treatment tank is discharged into the exhaust block 2 through the reserved hole 2. Since the exhaust port of the exhaust block 2 is below the liquid level of the purification tank, the ammonia and carbon dioxide generated in the biological treatment tank are directly in contact with the water inside the purification tank, so that the ammonia is dissolved in the water, and the carbon dioxide is discharged to the outside of the device through the exhaust pipe, which effectively avoids the problem of ammonia generated in the sewage treatment process polluting the environment, can achieve the effect of collecting and purifying ammonia, and at the same time, improves the conversion efficiency of sewage and reduces the time required for treatment.

[0018] 2. The present invention gradually increases the air pressure inside the biological treatment tank through the denitrifying bacteria inside the biological treatment tank. When the air pressure inside the biological treatment tank is too high, the air pressure causes the slide bar to move vertically downward along the inner wall of the pressure control tube, causing the spring to stretch. When the reserved hole enters the interior of the pressure reducing block, the gas inside the pressure controlling tube is discharged into the interior of the pressure reducing block through the reserved hole, and then the gas generated by the reaction is discharged into the interior of the purification tank through the connecting pipe and the exhaust block. The ammonia in the gas is absorbed by the purification tank, which effectively avoids the problem of excessive air pressure inside the tank body, and can achieve the effect of protecting the tank body. At the same time, the safety of the device during use is improved, and the service life of the device is also improved.

[0019] 3. The present invention uses the denitrifying bacteria inside the biological treatment tank to gradually increase the air pressure inside the biological treatment tank, so that the purification tank drives the rack to move vertically upward along the surfaces of the connecting pipe and the pressure control tube, thereby driving the latching tooth to deflect upward with the hinge seat as the center, so that the spring five is stretched. The elastic force of the spring five makes the lower surface of the latching tooth fit with the upper surface of the receiving block two, so that the latching tooth and the rack are engaged, thereby limiting the vertical position of the purification tank. The setting of this structure effectively avoids the problem of excessive air pressure inside the tank body, and can achieve the effect of adjusting the internal volume of the biological treatment tank. At the same time, it improves the versatility of the equipment and reduces the time required for debugging. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 The present invention Figure 1 Look directly at the internal structure diagram;

[0022] Figure 3 The present invention Figure 2 Look at the schematic diagram of the partial structure;

[0023] Figure 4 The present invention Figure 3 The enlarged structural diagram at A in the middle;

[0024] Figure 5 The present invention Figure 3 Schematic diagram of the cross-sectional structure from top view;

[0025] Figure 6 The present invention Figure 5 Right view schematic diagram of the internal structure;

[0026] Figure 7 The present invention Figure 3 Look directly at the schematic diagram of the local structure;

[0027] Figure 8 The present invention Figure 2 Right view schematic diagram of the internal structure;

[0028] Fig. 9 The present invention Figure 8 Schematic diagram of self-locking structure.

[0029] Figure numerals: 1, tank body; 11, water outlet pipe 1; 12, water inlet pipe 1; 13, water inlet pipe 2; 14, exhaust pipe; 15, heating wire; 16, biological treatment tank; 17, purification tank; 18, water outlet pipe 2; 2, fixing block; 21, vertical ladder; 22, connecting pipe; 23, clamping block; 24, limiting block; 25, spring 3; 26, slide; 27, sealing plug; 28, clamping plate; 29, receiving block 1; 210, sliding block; 211, spring 4; 212, cover plate ; 3. Pressure reducing mechanism; 31. Connecting pipe; 32. Pressure reducing block; 33. Exhaust block one; 34. Spring one; 35. Fixed plate one; 36. Slide bar one; 37. Reserved hole one; 4. Purification mechanism; 41. Air inlet hole; 42. Pressure control pipe; 43. Exhaust block two; 44. Reserved hole two; 45. Slide bar two; 46. Sealing ring; 47. Spring two; 5. Fixed plate two; 51. Receiver block two; 52. Rack; 53. Articulated seat; 54. Gear; 55. Spring five. DETAILED DESCRIPTION

[0030] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0031] Embodiment 1, as Figure 1-Figure 9 As shown, a papermaking water treatment equipment comprises a tank body 1, a biological treatment tank 16 is fixedly installed inside the tank body 1, a purification tank 17 is bonded inside the tank body 1, a purification mechanism 4 is arranged inside the biological treatment tank 16, the purification mechanism 4 comprises an air inlet 41, a pressure control tube 42, an exhaust block 43, a reserved hole 44, a slide bar 45, a spring 47, a fixed plate 35 and a sealing ring 46, the pressure control tube 42 is fixedly connected to the biological treatment tank 16, the pressure control tube 42 is bonded to the purification tank 17, the fixed plate 35 is fixedly connected to the pressure control tube 42, one end of the spring 47 is fixedly connected to the fixed plate 35, the other end of the spring 47 is fixedly connected to the slide bar 45, the sealing ring 46 is fixedly connected to the pressure control tube 42, the sealing ring 46 is bonded to the slide bar 45, and the exhaust block 43 is fixedly connected to the pressure control tube 42;

[0032] A pressure reducing mechanism 3 is provided inside the tank body 1, and the pressure reducing mechanism 3 includes a spring 34, a slide bar 36, a reserved hole 37, a connecting pipe 31, a pressure reducing block 32, and an exhaust block 33. One end of the spring 34 is fixedly connected to the fixing plate 35, and the other end of the spring 34 is fixedly connected to the slide bar 36. The slide bar 36 is fitted with the inner wall of the pressure controlling tube 42, the pressure controlling tube 42 is fixedly connected to the pressure reducing block 32, the slide bar 36 is slidably connected to the inner wall of the pressure controlling tube 42, the connecting pipe 31 is fixedly connected to the pressure reducing block 32, the connecting pipe 31 is fixedly connected to the biological treatment tank 16, the connecting pipe 31 is fitted with the purification tank 17, and the connecting pipe 31 is fixedly connected to the exhaust block 33.

[0033] There will be a large amount of nitrate in papermaking wastewater. When denitrifying bacteria are in an oxygen-deficient environment, they will convert nitrate into ammonia, and carbon dioxide will be produced at the same time. A large amount of ammonia discharged into the external environment will cause serious air pollution. When collecting the generated gas, it is necessary to separate carbon dioxide and ammonia, so as to improve the purity of the collected ammonia. In the process of collecting ammonia, the gradually increasing air pressure inside the biological treatment tank 16 causes the slide bar 45 to move vertically upward along the inner wall of the sealing ring 46, so that the spring 47 is stretched, so that the reserved hole 44 is separated from the inner wall of the sealing ring 46, and the gas inside the biological treatment tank 16 is transmitted to the inside of the exhaust block 33 through the reserved hole 44. Since the air outlet of the exhaust block 33 is located below the liquid surface inside the purification tank 17, the ammonia in the gas is fully in contact with the water inside the purification tank 17, so that the ammonia is fully absorbed, and the carbon dioxide is discharged to the outside of the device through the exhaust pipe 14, so as to avoid the pollution of the external air by ammonia, and at the same time, the ammonia is purified during the collection process.

[0034] As the internal air pressure of the biological treatment tank 16 gradually increases, the slide bar 36 moves vertically downward along the inner wall of the pressure control tube 42, causing the spring 34 to stretch. When the internal air pressure of the biological treatment tank 16 is about to reach the safety critical value, the slide bar 36 gradually moves downward to allow the reserved hole 37 to enter the interior of the pressure reducing block 32, so that the gas inside the biological treatment tank 16 is discharged through the reserved hole 1 37 and the reserved hole 2 44, thereby increasing the discharge rate of the gas inside the biological treatment tank 16, thereby quickly reducing the pressure inside the biological treatment tank 16, and then protecting the tank body 1 to avoid damage to the tank body 1 due to excessive pressure, thereby causing an accident.

[0035] Embodiment 2, based on the above embodiment, provides a self-locking structure;

[0036] like Figure 3 , Figure 4 As shown, the surface of the pressure control tube 42 is fixedly connected with a fixing plate 25, the upper surface of the fixing plate 25 is fixedly connected with a receiving block 251, the upper surface of the receiving block 251 is fixedly installed with a hinge seat 53, the internal rotation of the hinge seat 53 is connected with a latch tooth 54, the lower surface of the purification tank 17 is fixedly connected with two groups of racks 52, both groups of racks 52 are latched with the latch teeth 54, the lower surface of the latch teeth 54 is fixedly connected with a spring 55, and the spring 55 is fixedly connected to the fixing plate 25.

[0037] When the air pressure inside the biological treatment tank 16 increases, the pressure causes the purification tank 17 and the rack 52 to gradually move upward along the surfaces of the pressure control tube 42 and the connecting tube 31, thereby driving the latch tooth 54 to deflect with the hinge seat 53 as the center, causing the spring five 55 to stretch, and the elastic force of the spring five 55 causes the latch tooth 54 to return to its original position, so that the latch tooth 54 re-engages with the rack 52, thereby limiting the rack 52 and the purification tank 17, thereby increasing the volume inside the biological treatment tank 16, and then reducing the pressure inside the biological treatment tank 16, thereby improving the versatility of the equipment.

[0038] Embodiment three, as Figure 1 As shown, on the basis of the above embodiment, it also includes that an exhaust pipe 14 is fixedly installed on the upper surface of the tank body 1, an inlet pipe 12 is fixedly installed on the upper surface of the tank body 1, a water inlet pipe 2 13 is fixedly connected to the surface of the tank body 1, the inlet pipe 2 13 is fixedly connected to the biological treatment tank 16, a water outlet pipe 11 is fixedly connected to the surface of the tank body 1, the water outlet pipe 11 is fixedly connected to the biological treatment tank 16, and a water outlet pipe 2 18 is fixedly connected to the surface of the tank body 1, and the water outlet pipe 2 18 is fixedly connected to the purification tank 17.

[0039] The outlet pipe 11 is arranged in the middle of the biological treatment tank 16. After the sewage in the biological treatment tank 16 is completely reacted, the denitrifying bacteria in the biological treatment tank 16 are precipitated to the bottom of the biological treatment tank 16, so that the water after the reaction is completed is separated from the denitrifying bacteria when discharged, thereby avoiding the loss of the denitrifying bacteria.

[0040] Embodiment 4, as Figure 8 , Fig. 9 As shown, on the basis of the above embodiment, it also includes that a fixed block 2 is fixedly connected to the surface of the tank body 1, two groups of cover plates 212 are rotatably connected inside the fixed block 2, and sliders 210 are slidably connected inside the two groups of cover plates 212, and a spring four 211 is fixedly connected to the upper surface of the slider 210, and a clamping plate 28 is fixedly connected to the upper end of the spring four 211, and the clamping plate 28 is slidably connected to the cover plate 212, and the clamping plate 28 is clamped with the fixed block 2, and a receiving block 29 is fixedly connected to one side of the slider 210, and the receiving block 29 is fitted with the cover plate 212.

[0041] Pushing the receiving block 29 downward causes the slider 210 to move vertically downward along the inner wall of the cover plate 212, stretching the spring four 211. The elastic force of the spring four 211 drives the clamping plate 28 to move vertically downward along the inner wall of the cover plate 212, thereby allowing the cover plate 212 to deflect, thereby protecting the connecting pipe 22 inside the fixed block 2.

[0042] Embodiment 5, as Figure 8 As shown, on the basis of the above embodiment, a connecting pipe 22 is fixedly installed on the surface of the biological treatment tank 16 and the purification tank 17, and a sealing plug 27 is attached to the upper end of the connecting pipe 22, so that the liquid inside the biological treatment tank 16 and the purification tank 17 can flow into the inside of the connecting pipe 22 in small amounts, which is convenient for the staff to detect the liquid inside the biological treatment tank 16 and the purification tank 17.

[0043] Embodiment six, as Figure 8 As shown, on the basis of the above embodiment, it also includes that two groups of clamping blocks 23 are fixedly connected to the upper surface of the sealing plug 27, and a spring three 25 is fixedly connected to the upper surface of the sealing plug 27. The upper end of the spring three 25 is fixedly connected to the fixed block 2, and the elastic force of the spring three 25 provides downward pressure on the sealing plug 27 to prevent the sealing plug 27 from detaching due to excessive air pressure in the connecting pipe 22.

[0044] Embodiment seven, as Figure 1 As shown, on the basis of the above embodiment, a vertical ladder 21 is fixedly installed on the surface of the tank body 1, and the vertical ladder 21 is convenient for the staff to maintain and inspect the device.

[0045] Embodiment 8, on the basis of the above embodiment, further includes: a limit block 24 is fixedly installed inside the fixed block 2, two groups of slide grooves 26 are opened on the surface of the limit block 24, the limit block 24 and the sealing plug 27 are located in the same vertical plane, when the liquid inside the connecting tube 22 is detected, the block 23 fixedly connected to the upper surface of the sealing plug 27 is placed on the inner wall of the slide groove 26, so that the sealing plug 27 can be limited, thereby preventing the spring three 25 and the sealing plug 27 from affecting the detection.

[0046] Embodiment 9, based on the above embodiment, further includes that a heating wire 15 is fixedly installed on the lower surface of the biological treatment tank 16, and the biological treatment tank 16 is heated by the heating wire 15, thereby reducing the oxygen content of the sewage inside the biological treatment tank 16, and at the same time increasing the temperature of the sewage inside the biological treatment tank 16, thereby providing an oxygen-deficient and high-temperature environment for the denitrifying bacteria, thereby increasing the reaction rate of the denitrifying bacteria.

[0047] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A papermaking water treatment device, comprising a tank (1), characterized in that: A biological treatment tank (16) is fixedly installed inside the tank body (1), a purification tank (17) is attached to the inside of the tank body (1), a purification mechanism (4) is arranged inside the biological treatment tank (16), and the purification mechanism (4) includes an air inlet (41), a pressure control tube (42), a second exhaust block (43), a second reserved hole (44), a second slide bar (45), a second spring (47), a first fixing plate (35) and a sealing ring (46), and the pressure control tube (42) and the biological treatment tank (17) are fixedly installed inside the tank body (1), and a purification tank (17) is attached to the inside of the biological treatment tank (17), and a purification mechanism (4) is arranged inside the biological treatment tank (17). 6) are fixedly connected, the pressure control tube (42) is fitted with the purification tank (17), the fixing plate 1 (35) is fixedly connected with the pressure control tube (42), one end of the spring 2 (47) is fixedly connected with the fixing plate 1 (35), the other end of the spring 2 (47) is fixedly connected with the slide bar 2 (45), the sealing ring (46) is fixedly connected with the pressure control tube (42), the sealing ring (46) is fitted with the slide bar 2 (45), and the exhaust block 2 (43) is fixedly connected with the pressure control tube (42); A pressure reducing mechanism (3) is arranged inside the tank body (1), and the pressure reducing mechanism (3) comprises a spring (34), a slide bar (36), a reserved hole (37), a connecting pipe (31), a pressure reducing block (32), and an exhaust block (33). One end of the spring (34) is fixedly connected to a fixing plate (35), and the other end of the spring (34) is fixedly connected to a slide bar (36). The slide bar (36) is fitted with the inner wall of a pressure control tube (42), and the pressure control tube (42) is fixedly connected to the pressure reducing block (32). The slide bar (36) is slidably connected to the inner wall of the pressure control tube (42). The connecting pipe (31) is fixedly connected to the pressure reducing block (32), and the connecting pipe (31) is fixedly connected to the biological treatment tank (16). The connecting pipe (31) is fitted with the purification tank (17), and the connecting pipe (31) is fixedly connected to the exhaust block (33).

2. The papermaking water treatment equipment according to claim 1, characterized in that: The surface of the pressure control tube (42) is fixedly connected to a fixing plate 2 (5), the upper surface of the fixing plate 2 (5) is fixedly connected to a receiving block 2 (51), the upper surface of the receiving block 2 (51) is fixedly installed with a hinge seat (53), the interior of the hinge seat (53) is rotatably connected with a latching tooth (54), the lower surface of the purification tank (17) is fixedly connected to two groups of racks (52), both groups of the racks (52) are latched with the latching tooth (54), the lower surface of the latching tooth (54) is fixedly connected to a spring 5 (55), and the spring 5 (55) is fixedly connected to the fixing plate 2 (5).

3. The papermaking water treatment equipment according to claim 1, characterized in that: An exhaust pipe (14) is fixedly mounted on the upper surface of the tank body (1), a water inlet pipe 1 (12) is fixedly mounted on the upper surface of the tank body (1), a water inlet pipe 2 (13) is fixedly connected to the surface of the tank body (1), the water inlet pipe 2 (13) is fixedly connected to the biological treatment tank (16), a water outlet pipe 1 (11) is fixedly connected to the surface of the tank body (1), the water outlet pipe 1 (11) is fixedly connected to the biological treatment tank (16), a water outlet pipe 2 (18) is fixedly connected to the surface of the tank body (1), and the water outlet pipe 2 (18) is fixedly connected to the purification tank (17).

4. The papermaking water treatment equipment according to claim 1, characterized in that: A fixed block (2) is fixedly connected to the surface of the tank body (1), two groups of cover plates (212) are rotatably connected inside the fixed block (2), and sliders (210) are slidably connected inside the two groups of cover plates (212). A spring four (211) is fixedly connected to the upper surface of the slider (210), and a clamping plate (28) is fixedly connected to the upper end of the spring four (211), and the clamping plate (28) is slidably connected to the cover plate (212). The clamping plate (28) is clamped to the fixed block (2), and a receiving block one (29) is fixedly connected to one side of the slider (210), and the receiving block one (29) is fitted with the cover plate (212).

5. The papermaking water treatment equipment according to claim 1, characterized in that: A connecting pipe (22) is fixedly mounted on the surface of the biological treatment tank (16) and the purification tank (17), and a sealing plug (27) is attached to the upper end of the connecting pipe (22).

6. The papermaking water treatment equipment according to claim 5, characterized in that: The upper surface of the sealing plug (27) is fixedly connected to two groups of clamping blocks (23), the upper surface of the sealing plug (27) is fixedly connected to a spring three (25), and the upper end of the spring three (25) is fixedly connected to the fixing block (2).

7. The papermaking water treatment equipment according to claim 1, characterized in that: A vertical ladder (21) is fixedly mounted on the surface of the tank body (1).

8. The papermaking water treatment equipment according to claim 4, characterized in that: A limit block (24) is fixedly installed inside the fixed block (2), two groups of sliding grooves (26) are provided on the surface of the limit block (24), and the limit block (24) and the sealing plug (27) are located on the same vertical plane.

9. The papermaking water treatment equipment according to claim 1, characterized in that: A heating wire (15) is fixedly mounted on the lower surface of the biological treatment tank (16).

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