Sludge dewatering device for environmental protection engineering

Abstract

The utility model discloses a sludge dewatering device for environmental protection engineering, which relates to the field of sludge dewatering devices and comprises a base and a medicament pipe, a flocculation basin is fixed above the base, a transport pipe is mounted on one side of the flocculation basin in a penetrating manner, the other end of the transport pipe is connected with a dewatering box, a sludge basin is mounted on one side of the flocculation basin, and the medicament pipe is connected with the sludge basin. A motor is arranged at the top of the flocculation basin, a rotating rod is installed at the output end of the motor, multiple fan blades are fixed to the outer wall of the rotating rod, and a liquid conveying pipe is movably installed at the end of the agent pipe. According to the utility model, the problem that the contact surface between a coagulation agent and sludge is small is solved; when the agent pipe conveys a coagulation agent, the motor is started, the liquid conveying pipe is driven to rotate through the second belt wheel and the belt, the communicating pipe on the rotating outer wall of the liquid conveying pipe plays a stirring role, so that the contact surfaces of the agent and the sludge are further combined, and compared with the prior art, the agent adding technology after the operation achieves the same flocculation effect; the dosage of the medicament in the scheme is small.

Description

Technical Field

[0001] The utility model relates to the field of sludge dewatering devices, in particular to a sludge dewatering device for environmental protection engineering. Background Art

[0002] Nowadays, people have higher and higher requirements on the environment. The sludge from municipal sewage, food, beverage, chemical, leather, welding materials, papermaking, printing and dyeing, pharmaceutical and other industries needs to be dehydrated. The flowing primary, concentrated or digested sludge is dehydrated and converted into semi-solid or solid mud blocks. After dehydration, the sludge moisture content can be reduced to 55% to 80%, depending on the properties of the sludge and sediment and the efficiency of the dehydration equipment. The machines currently used are mainly divided into plate and frame dehydrators and stacked spiral dehydrators.

[0003] The working process of the stacked spiral dewatering machine is to introduce the sludge into the sewage pool, add polymer coagulant, flocculate the sludge through the flocculation tank, and then introduce it into the dewatering tank for concentration and dehydration, and finally export the lumps after dehydration.

[0004] In the prior art, when adding coagulant, a chemical pipe is used to introduce it into the sludge pool, and then the agitator in the flocculation pool mixes the chemical solution and the sludge to flocculate the sludge. The chemical pipe is directly discharged into the sludge, which will result in a shorter reaction time between the sludge and the chemical, and a smaller contact area between the chemical solution and the sludge, resulting in poor subsequent flocculation effect. In order to achieve a good flocculation effect, a large amount of chemical must be used to soak the sludge, which will cause chemical waste and increase production costs. Utility Model Content

[0005] Based on this, the purpose of the utility model is to provide a sludge dewatering device for environmental protection engineering, so as to solve the technical problem of small contact surface between coagulant and sludge.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sludge dewatering device for environmental protection engineering, comprising a base and a chemical pipe, a flocculation tank is fixed above the base, and a transport pipe is installed through one side of the flocculation tank, the other end of the transport pipe is connected to a dewatering box, and a water inlet is provided on one side of the flocculation tank; a sludge tank is installed on one side of the flocculation tank, and a baffle is provided inside the sludge tank; a motor is provided on the top of the flocculation tank, and a rotating rod is installed at the output end of the motor, and a first pulley is provided on the outer wall of the rotating rod, multiple fan blades are fixed on the outer wall of the rotating rod, and a belt is provided on the outer wall of the first pulley, an infusion tube is movably installed on the end of the chemical tube, and an overflow hole is provided on the outer wall of the infusion tube, and multiple groups of connecting tubes are provided through the outer wall of the infusion tube.

[0007] By adopting the above technical scheme, the problem of small contact surface between coagulant and sludge is solved; when the agent tube transports coagulant, the motor starts, and the infusion tube is driven to rotate through the second pulley and the belt, and when the agent flows into the infusion tube, it will diffuse to the surroundings through the overflow hole and the connecting tube opened in the tube wall, and the connecting tube on the rotating outer wall of the infusion tube plays a stirring role to further combine the contact surface between the agent and the sludge, and then flow into the flocculation tank through the water inlet at the bottom of the sludge tank; compared with the existing technology, the agent addition technology after the above operation achieves the same flocculation effect, and the amount of agent used in this case is less.

[0008] The utility model is further configured that a first chute is provided at the bottom of the flocculation tank, and an oblique angle limiting area is provided in the middle section of the first chute.

[0009] By adopting the above technical solution, when the sprocket drives the chain to do reciprocating motion, the first connecting rod and the chain will form a triangular position relationship, and the oblique angle limiting area set in the slide groove can prevent the first connecting rod from intersecting with the slide groove and failing to move normally.

[0010] The utility model is further configured such that a sprocket is fixed at the bottom of the rotating rod, and a chain is sleeved on the outer side of the sprocket, both ends of the chain are respectively connected to a first connecting rod, and the other end of the first connecting rod is movably connected to a second connecting rod, and one end of the second connecting rod is equipped with a paddle through a rotating shaft.

[0011] By adopting the above technical solution, when the sprocket drives the chain to perform reciprocating motion, the second connecting rod can limit the moving distance of the paddle, thereby preventing the paddle from colliding with the rotating fan blades and causing damage to parts.

[0012] The utility model is further configured that a fixing plate is fixed on one side of the paddle, and the paddle and the fixing plate on the back form an angle of °.

[0013] By adopting the above technical solution, the paddle is a sheet-like plate, and the sludge condensate will flow into the back of the paddle with the water flow, forming sludge accumulation. The fixed plate will push the sludge condensate upward, avoiding the accumulation of sludge condensate on the back of the paddle.

[0014] The utility model is further configured such that the vertical angle of the fan blades on the rotating rod is 15°.

[0015] By adopting the above technical solution, the fan blades have an inclined angle which can reduce the resistance of water flow during the rotation of the fan blades.

[0016] The utility model is further configured such that the end of the medicine tube is respectively connected to two infusion tubes through a three-way tube, the outer walls of the two groups of infusion tubes are sleeved with a second pulley, and the second pulley on the outer wall of one group of infusion tubes is connected to the first pulley through a belt.

[0017] By adopting the above technical solution, when the motor starts, the first pulley will drive one group of infusion tubes to rotate, and at the same time, the other group of infusion tubes will also rotate synchronously driven by the second pulley, thereby playing a stirring role and increasing the contact area between the agent and the sludge.

[0018] The utility model is further configured that an overflow hole is opened at the end of the connecting pipe.

[0019] By adopting the above technical solution, the connecting pipe can also introduce the reagent into the sludge, so that during the rotation process, the diffusion area of ​​the reagent increases, and the contact area between the reagent and the sludge also increases.

[0020] The utility model is further configured such that the diameter of the first belt pulley is greater than the diameter of the second belt pulley.

[0021] By adopting the above technical solution, when the motor starts, the speed of the second pulley will be greater than that of the first pulley, so the contact speed of the reagent and the sludge in the sludge tank is fast. When the sludge enters the flocculation tank, it is stirred normally by the rotating rod, so that the stirring of the reagent and the sludge is more uniform.

[0022] In summary, the utility model mainly has the following beneficial effects:

[0023] 1. The utility model solves the problem of small contact surface between coagulant and sludge by providing a sludge pool, a motor, a reagent pipe, a second pulley, a belt, an infusion pipe, a connecting pipe and an overflow hole; when the reagent pipe conveys the coagulant, the motor starts, and the infusion pipe is driven to rotate through the second pulley and the belt, and when the reagent flows into the infusion pipe, it diffuses to the surroundings through the overflow hole and the connecting pipe opened on the pipe wall, and the connecting pipe on the rotating outer wall of the infusion pipe plays a stirring role to further combine the contact surface between the reagent and the sludge, and then flows into the flocculation tank through the water inlet at the bottom of the sludge pool; compared with the prior art, the reagent adding technology after the above operation achieves the same flocculation effect, and the amount of reagent used in this case is less;

[0024] 2. The utility model solves the problem that the sludge condensate in the flocculation tank will not all enter the dewatering tank, and the flocculation tank needs to be cleaned manually regularly by arranging a paddle, a fixed plate, a flocculation tank, a first connecting rod, a first slide groove, a sprocket, a chain, a motor, a rotating rod and fan blades; when the sludge in the sludge tank enters the flocculation tank, the motor drives the rotating rod to rotate, and the fan blades installed on the rotating rod will stir the sludge, and at the same time the sprocket at the bottom rotates, and the chain moves in the first slide groove at the bottom, driving the first connecting rod and the paddle at the other end of the first connecting rod to start reciprocating motion, so that the sludge condensate at the bottom will not sink in the dead corner at the bottom, and a fixed plate is also fixed on one side of the paddle, and the fixed plate pushes the condensate on the back of the paddle upwards as the paddle reciprocates, avoiding the paddle from causing new accumulation dead corners, reducing the number of manual cleaning times, and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a right side view of the utility model;

[0026] Figure 2 It is a three-dimensional diagram of the utility model;

[0027] Figure 3 It is a left view of the utility model;

[0028] Figure 4 This is a schematic diagram of the connection between the infusion tube and the motor of the utility model;

[0029] Figure 5 This is a bottom structure diagram of the flocculation tank of the utility model;

[0030] Figure 6 This is the internal structure diagram of the flocculation tank of the utility model;

[0031] Figure 7 This is a schematic diagram of the structure of the second embodiment of the present utility model;

[0032] Figure 8 This is a working schematic diagram of the second embodiment of the present utility model.

[0033] In the figure: 1. base; 2. sludge tank; 3. dewatering tank; 4. baffle; 5. paddle; 51. fixed plate; 52. slide plate; 6. transport pipe; 7. flocculation tank; 71. water inlet; 72. first connecting rod; 73. first slide groove; 74. sprocket; 75. chain; 76. slide rod; 77. second connecting rod; 78. second slide groove; 8. motor; 81. rotating rod; 82. fan blade; 83. first pulley; 9. medicine tube; 91. second pulley; 92. belt; 93. infusion tube; 94. connecting pipe; 95. overflow hole. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0035] The following describes an embodiment of the utility model based on its overall structure.

[0036] Embodiment 1

[0037] A sludge dewatering device for environmental protection engineering, such as Figure 1 - Figure 8 As shown, it includes a base 1 and a medicine tube 9.

[0038] Specifically, a flocculation tank 7 is fixed on the top of the base 1, and a transport pipe 6 is installed through one side of the flocculation tank 7, and the other end of the transport pipe 6 is connected to the dewatering box 3, and a water inlet 71 is opened on one side of the flocculation tank 7; a sludge tank 2 is installed on one side of the flocculation tank 7, and a baffle 4 is provided inside the sludge tank 2; the sludge is transported to the sludge tank through the transport pipe 6 at the bottom of the sludge tank 2, and when the sludge spreads over the baffle 4 to the other side of the sludge tank 8, the reagent pipe 9 starts to introduce the coagulant reagent, a motor 8 is provided on the top of the flocculation tank 7, and a rotating rod 81 is installed on the output end of the motor 8, and the outer wall of the rotating rod 81 is provided with a first pulley 83, and the outer wall of the rotating rod 81 is fixed with multiple fan blades 82, the first A belt 92 is sleeved on the outer wall of the pulley 83, and an infusion tube 93 is movably installed on the end of the drug tube 9, and an overflow hole 95 is opened on the outer wall of the infusion tube 93. A plurality of connecting tubes 94 are penetrated through the outer wall of the infusion tube 93. The motor 8 is started, and the motor 8 drives the second pulley 91 below to rotate. The belt 92 on the outer wall of the second pulley 91 drives an infusion tube 93 to rotate, and the other second pulley 91 of the infusion tube 93 and the belt 92 drive another infusion tube 93 to rotate synchronously. The overflow hole 95 on the outer wall of the infusion tube 93 and the connecting tube 94 begin to flow out the drug into the sludge pool 2, and the connecting tube 94 begins to stir the sludge as the infusion tube 93 rotates.

[0039] See also Figure 5 - Figure 6 A first slide groove 73 is provided at the bottom of the flocculation tank 7, and an oblique angle limiting area is provided in the middle section of the first slide groove 73. When the sprocket 74 drives the chain 75 to reciprocate, the first connecting rod 72 and the chain 75 will form a triangular position relationship. The oblique angle limiting area provided in the first slide groove 73 can prevent the first connecting rod 72 from intersecting with the first slide groove 73 and failing to move normally.

[0040] See also Figure 5 - Figure 6 A sprocket 74 is fixed to the bottom of the rotating rod 81, and a chain 75 is sleeved on the outside of the sprocket 74. The two ends of the chain 75 are respectively connected to the first connecting rod 72, and the other end of the first connecting rod 72 is movably connected to the second connecting rod 77. One end of the second connecting rod 77 is installed with a paddle 5 through a rotating shaft. When the sprocket 74 drives the chain 75 to reciprocate, the second connecting rod 77 can limit the moving distance of the paddle 5 to prevent the paddle 5 from colliding with the rotating fan blade 82 and causing damage to parts.

[0041] See also Figure 6 A fixing plate 51 is fixed on one side of the paddle 5, and the paddle 5 and the fixing plate 51 on the back are at an angle of 45°. The paddle 5 is a sheet-like plate, and the sludge condensate will flow into the back of the paddle 5 with the water flow, forming sludge accumulation. The fixing plate 51 will push the sludge condensate upward, thereby preventing the sludge condensate from accumulating on the back of the paddle 5.

[0042] See also Figure 6The vertical angle of the fan blade 82 on the rotating rod 81 is 15°. The inclination angle of the fan blade 82 will reduce the resistance of the water flow during the rotation of the fan blade 82.

[0043] See also Figure 1 - Figure 4 The ends of the reagent tube 9 are respectively connected to two infusion tubes 93 through a three-way tube. The outer walls of the two groups of infusion tubes 93 are sleeved with a second pulley 91. The second pulley 91 on the outer wall of one group of infusion tubes 93 is connected to the first pulley 83 through a belt 92. When the motor is started, the first pulley 83 will drive one group of infusion tubes 93 to rotate, and at the same time, the other group of infusion tubes 93 will also rotate synchronously driven by the second pulley 91, which plays a stirring role and increases the contact area between the reagent and the sludge.

[0044] See also Figure 4 An overflow hole 95 is provided at the end of the connecting pipe 94, and the connecting pipe 94 can also introduce the agent into the sludge. In this way, during the rotation process, the diffusion area of ​​the agent increases, and the contact area between the agent and the sludge also increases.

[0045] See also Figure 4 The diameter of the first pulley 83 is greater than that of the second pulley 91. When the motor 8 is started, the rotation speed of the second pulley 91 will be greater than that of the first pulley 83, so the contact speed of the reagent and the sludge in the sludge pool is fast. When the sludge enters the flocculation tank 7, the rotating rod 81 stirs it normally, so that the mixing of the reagent and the sludge is more uniform.

[0046] Embodiment 2

[0047] A sludge dewatering device for environmental protection engineering, such as Figure 7 - Figure 8 As shown, the technical scheme and parts of this embodiment are basically the same as those of embodiment 1, and the technically identical parts will not be repeated here. The difference is that the sprocket 74 and chain 75 at the bottom of the flocculation tank 7 drive the first connecting rod 72 and the second connecting rod 77 to do reciprocating motion. When the second connecting rod 77 drives a group of slides 52 to slide toward the side of the first slide groove 73, a slide bar 76 is provided on the top of the slide 52. The slide bar 76 moves downward in the second slide groove 78 on the inner wall of the flocculation tank 7, and the slide 52 begins to tilt. At this time, the first connecting rod 72 and the second connecting rod 77 connected to the other end of the chain 75 drive the bottom of another group of slides 52 to slide in the first slide groove 73 toward one end of the first slide groove 73, and the slide bar 76 moves upward, and the slide 52 returns to a vertical state.

[0048] The working principle of the utility model is as follows: the sludge is transported to the sludge pool through the transport pipe 6 at the bottom of the sludge pool 2. When the sludge spreads over the baffle 4 to the other side of the sludge pool, the reagent pipe 9 starts to introduce the coagulant reagent, the motor 8 is started, and the motor 8 drives the second pulley 91 below to rotate. The belt 92 on the outer wall of the second pulley 91 drives an infusion tube 93 to rotate. Another second pulley 91 and the belt 92 of the infusion tube 93 drive another infusion tube 93 to rotate synchronously. The overflow hole 95 on the outer wall of the infusion tube 93 and the connecting tube 94 start to flow out the reagent into the sludge pool 2. The connecting tube 94 starts to stir the sludge as the infusion tube 93 rotates.

[0049] The sludge enters the flocculation tank 7 through the water inlet 71 below the sludge tank 2, and the motor 8 drives the rotating rod 81 and the fan blades 82 on the rotating rod 81 to rotate, and the sprocket 74 at the bottom of the rotating rod 81 also starts to rotate. When the sprocket 74 rotates, it drives the chain 75 to slide in the first slide groove 73. When one end of the chain 75 contacts the sprocket 74, the sprocket 74 continues to rotate, and the sprocket 74 will drive the chain 75 to pass from the other side of the sprocket 74 to achieve reciprocating motion. At the same time, the chain 75 drives the first connecting rod 72 and the second connecting rod 77 to also achieve reciprocating motion. The paddle 5 movably connected at one end of the second connecting rod 77 will flip the sludge condensate at the bottom upwards, and the fixed plate 51 on one side of the paddle 5 will prevent the sludge condensate from accumulating at the bottom of the flocculation tank 7.

[0050] When the flocculated sludge coagulates, it will rotate upward along with the rotating water flow of the fan blades 82 and enter the dewatering tank 3, where it will be concentrated and dehydrated to finally form mud blocks.

[0051] Although an embodiment of the utility model has been shown and described, this specific embodiment is merely an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. A sludge dewatering device for environmental protection engineering, comprising a base (1) and a reagent pipe (9), characterized in that: A flocculation tank (7) is fixed above the base (1), and a transport pipe (6) is installed through one side of the flocculation tank (7), and the other end of the transport pipe (6) is connected to a dewatering box (3), and a water inlet (71) is provided on one side of the flocculation tank (7); a sludge tank (2) is installed on one side of the flocculation tank (7), and a baffle (4) is provided inside the sludge tank (2); a motor (8) is provided on the top of the flocculation tank (7), and a rotating rod (81) is installed at the output end of the motor (8), and the outer wall of the rotating rod (81) is provided with a first pulley (83), and the outer wall of the rotating rod (81) is fixed with multiple blades (82), and the outer wall of the first pulley (83) is provided with a belt (92); an infusion tube (93) is movably installed at the end of the medicine tube (9), and an overflow hole (95) is provided on the outer wall of the infusion tube (93), and multiple groups of connecting tubes (94) are provided through the outer wall of the infusion tube (93).

2. The sludge dewatering device for environmental protection engineering according to claim 1, characterized in that: A first chute (73) is provided at the bottom of the flocculation tank (7), and an oblique angle limiting area is provided in the middle section of the first chute (73).

3. The sludge dewatering device for environmental protection engineering according to claim 1, characterized in that: A sprocket (74) is fixed at the bottom of the rotating rod (81), and a chain (75) is sleeved on the outer side of the sprocket (74), and the two ends of the chain (75) are respectively connected to the first connecting rod (72), and the other end of the first connecting rod (72) is movably connected to the second connecting rod (77), and one end of the second connecting rod (77) is installed with a paddle (5) through a rotating shaft.

4. The sludge dewatering device for environmental protection engineering according to claim 3 is characterized by: A fixing plate (51) is fixed on one side of the plectrum (5), and an angle of 45° is formed between the plectrum (5) and the fixing plate (51) on the back.

5. The sludge dewatering device for environmental protection engineering according to claim 1, characterized in that: The vertical angle of the fan blade (82) on the rotating rod (81) is 15°.

6. The sludge dewatering device for environmental protection engineering according to claim 1, characterized in that: The ends of the medicine tube (9) are respectively connected to two infusion tubes (93) through a three-way pipe, and the outer walls of the two groups of infusion tubes (93) are both sleeved with a second pulley (91), and the second pulley (91) on the outer wall of one group of infusion tubes (93) is connected to the first pulley (83) through a belt (92).

7. The sludge dewatering device for environmental protection engineering according to claim 1, characterized in that: An overflow hole (95) is provided at the end of the connecting pipe (94).

8. The sludge dewatering device for environmental protection engineering according to claim 1, characterized in that: The diameter of the first pulley (83) is greater than the diameter of the second pulley (91).

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