Coagulating precipitation separation device for sewage treatment

Abstract

The utility model relates to a coagulating sedimentation separation device for sewage treatment, which relates to the technical field of sewage treatment and comprises a sedimentation tank, a sludge discharge port is arranged at the bottom of the sedimentation tank, one end of the sedimentation tank is communicated with a coagulating tank, a liquid discharge port is arranged at the other end of the sedimentation tank, and an avoiding groove is arranged on the inner bottom wall of the liquid discharge port. A liquid baffle is arranged in the receding groove and the liquid outlet in a sliding mode, a liquid outlet channel is formed between the top of the liquid baffle and the inner top wall of the liquid outlet, the liquid baffle is used for controlling the opening degree of the liquid outlet channel, a plurality of inclined plates are arranged in the sedimentation tank, a mounting frame is arranged on the inclined plates in a sliding mode, and the mounting frame is arranged in the sedimentation tank in a sliding mode. And the mounting frame is fixedly connected with the liquid baffle. The device has the effect of improving the liquid supernatant discharge efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a coagulation sedimentation separation device for sewage treatment. Background Art

[0002] In sewage treatment, the coagulation sedimentation technology is mainly used to remove particulate impurities in sewage. By adding coagulants and flocculants to water, particles that are difficult to precipitate in water can aggregate with each other to form colloids, and then combine with impurities in the water body to form larger flocs, so as to achieve the sedimentation effect.

[0003] A Chinese patent with the authorization announcement number of CN217479219U in the related technology provides an integrated system for activated coke adsorption coupled with coagulation sedimentation, which includes a mixing tank, a flocculation tank and a sedimentation tank. The mixing tank, the flocculation tank and the sedimentation tank are connected in sequence. The mixing tank is provided with a liquid inlet, and the sedimentation tank is provided with a liquid outlet. A first stirring device and a coagulant dosing device are installed in the mixing tank. A second stirring device, a flocculant dosing device and an activated coke dosing device are installed in the flocculation tank. Inclined plates are installed in the sedimentation tank, and a sludge discharge pump and a sludge reflux pump are installed at the bottom of the sedimentation tank. After sewage enters the mixing tank from the liquid inlet, the coagulant dosing device adds coagulant into the mixing tank, and is stirred and mixed by the first stirring device and undergoes a coagulation reaction in the mixing tank. The liquid after the coagulation reaction enters the flocculation tank. The flocculant dosing device adds flocculant to the flocculation tank, and the activated coke dosing device adds activated coke to the flocculation tank. The liquid after the coagulation reaction and the flocculant are first stirred and mixed by the second stirring device to form flocs, and then react with the activated coke. After that, the floc sludge containing activated coke undergoes solid-liquid separation in the sedimentation tank, the supernatant is discharged from the liquid outlet, and the sludge containing activated coke precipitates to the bottom of the sedimentation tank and is directly discharged through the sludge reflux pump and the sludge discharge pump.

[0004] In the process of implementing this application, the inventor found that there are at least the following problems in this technology: Since the height position of the liquid outlet is fixed, only when the liquid level height of the supernatant is higher than the liquid outlet can the supernatant be discharged from the liquid outlet. When the liquid level height of the supernatant is lower than the liquid outlet, the supernatant stays in the sedimentation tank for a long time, resulting in low discharge efficiency of the supernatant. Summary of the Utility Model

[0005] In order to improve the discharge efficiency of the supernatant, this application provides a coagulation sedimentation separation device for sewage treatment.

[0006] The coagulation sedimentation separation device for sewage treatment provided by this application adopts the following technical solutions:

[0007] A coagulation and sedimentation separation device for sewage treatment comprises a sedimentation tank, wherein a mud discharge port is arranged at the bottom of the sedimentation tank, one end of the sedimentation tank is connected to a coagulation tank, a liquid discharge port is arranged at the other end of the sedimentation tank, a clearance groove is arranged on the bottom wall of the liquid discharge port, a liquid baffle plate is slidably arranged together with the clearance groove and the liquid discharge port, a liquid discharge channel is formed between the top of the liquid baffle plate and the top wall of the liquid discharge port, the liquid baffle plate is used to control the opening of the liquid discharge channel, a plurality of inclined plates are arranged in the sedimentation tank, an installation frame is commonly arranged on the inclined plates, the installation frame is slidably arranged in the sedimentation tank, and the installation frame is fixedly connected to the liquid baffle plate.

[0008] By adopting the above technical scheme, the sewage undergoes coagulation reaction in the coagulation tank, and then the sewage containing flocs enters the sedimentation tank for solid-liquid separation. The solids precipitated to the bottom of the sedimentation tank are discharged from the mud outlet, and the supernatant is filtered through the inclined plate and discharged from the drainage channel. When the liquid level of the supernatant is low, the installation frame and the liquid baffle plate descend synchronously, and when the liquid level of the supernatant is high, the installation frame and the liquid baffle plate descend synchronously, thereby dynamically adjusting the height of the drainage channel according to the liquid level of the supernatant, reducing the situation where the supernatant stays in the sedimentation tank for a long time, and improving the discharge efficiency of the supernatant.

[0009] Preferably, a sealing rubber sleeve is sleeved on the outer wall of the liquid baffle plate, a sealing liquid cavity is provided in the sealing rubber sleeve, the sealing liquid cavity is used to fill a sealing medium, a sealing liquid pipe is connected to the sealing liquid cavity, a sealing liquid valve is provided on the sealing liquid pipe, an upper sealing groove is provided on the inner wall of the drain port, a lower sealing groove is provided on the inner wall of the give way groove, the upper sealing groove and the lower sealing groove are connected to each other, and the inner walls of the upper sealing groove and the lower sealing groove are both in contact with the outer wall of the sealing rubber sleeve.

[0010] By adopting the above technical solution, when the liquid baffle plate moves, a part of the sealing medium in the sealing liquid cavity is discharged through the sealing liquid pipe, thereby reducing the friction between the sealing rubber sleeve and the sedimentation tank, and facilitating the movement of the liquid baffle plate. When the liquid baffle plate is stationary, the sealing medium is injected into the sealing liquid cavity through the sealing liquid pipe, so that the sealing rubber sleeve expands and fills the space between the liquid baffle plate and the sedimentation tank, thereby improving the sealing between the liquid baffle plate and the sedimentation tank.

[0011] Preferably, a plurality of contact wheels are rotatably disposed in the upper sealing groove and the lower sealing groove, and the contact wheels abut against the outer wall of the sealing rubber sleeve.

[0012] By adopting the above technical solution, when the liquid baffle plate moves, the contact wheel rolls relative to the sealing rubber sleeve, thereby reducing the friction between the sealing rubber sleeve and the sedimentation tank, thereby facilitating the movement of the liquid baffle plate.

[0013] Preferably, a connecting shaft is arranged above the sedimentation tank. Winding rollers are fixedly arranged at both ends of the connecting shaft. Driving shafts are fixedly arranged at the mutually remote ends of the winding rollers. Winding seats are rotatably arranged on the driving shafts. The winding seats are fixedly connected with the top of the sedimentation tank. Lifting ropes are wound around the winding rollers. The lifting ropes are connected with the installation frame.

[0014] By adopting the above technical solution, when the winding roller rotates, the winding roller winds and unwinds the lifting rope. When the lifting rope is wound and unwound, the lifting rope drives the installation frame to lift and lower, and the installation frame drives the liquid blocking plate to lift and lower.

[0015] Preferably, a winding motor is fixedly arranged on the winding seat. The output shaft of the winding motor penetrates through the winding seat. The output shaft of the winding motor is fixedly connected with the driving shaft.

[0016] By adopting the above technical solution, the collecting motor drives the driving shaft to rotate. The driving shaft rotates to drive the winding roller to rotate, thereby driving the installation frame and the liquid blocking plate to lift and lower.

[0017] Preferably, the side wall of the installation frame is mutually attached to the inner wall of the sedimentation tank.

[0018] By adopting the above technical solution, during the lifting process of the installation frame, the installation frame moves along the inner wall of the sedimentation tank, reducing the situation of the installation frame shaking.

[0019] Preferably, a detection vertical rod is rotatably arranged on the installation frame. A plurality of detection cross rods are fixedly arranged on the side wall of the detection vertical rod. Pressure sensors are fixedly arranged on the detection cross rods.

[0020] By adopting the above technical solution, when the detection vertical rod rotates, the detection vertical rod drives the detection cross rod to rotate. The detection cross rod rotates to drive the pressure sensor to rotate. When the solid content in the supernatant is relatively high, the pressure value detected by the pressure sensor is relatively high. At this time, the liquid blocking plate rises to reduce the opening degree of the liquid discharge channel. When the solid content in the supernatant is relatively low, the pressure value detected by the pressure sensor is relatively low. At this time, the liquid blocking plate descends to increase the opening degree of the liquid discharge channel, thereby facilitating the rapid discharge of the supernatant from the sedimentation tank.

[0021] Preferably, a detection bracket is fixedly arranged on the installation frame. A detection motor is fixedly arranged on the detection bracket. The output shaft of the detection motor is fixedly connected with the detection vertical rod.

[0022] By adopting the above technical solution, the detection motor starts to drive the detection vertical rod to rotate, thereby facilitating the pressure sensor to detect the consistency of the supernatant.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. The discharge efficiency of the supernatant is improved by setting a sedimentation tank, a mud discharge port, a coagulation tank, a liquid discharge port, a clearance groove, a liquid baffle plate, a liquid discharge channel, an inclined plate and a mounting frame;

[0025] 2. The sealing performance between the liquid baffle plate and the sedimentation tank is improved by providing a sealing rubber sleeve, a sealing liquid cavity, a sealing liquid pipe, a sealing liquid valve, an upper sealing groove and a lower sealing groove;

[0026] 3. The contact wheel is provided to facilitate the movement of the liquid baffle. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a cross-sectional view of a coagulation sedimentation separation device for sewage treatment in an embodiment of the present application.

[0028] Figure 2 It is a cross-sectional view showing the connection relationship between the liquid baffle plate and the sedimentation tank in the embodiment of the present application.

[0029] Figure 3 yes Figure 2 Enlarged view of part A.

[0030] Figure 4 It is a cross-sectional view showing the positional relationship between the upper sealing groove and the lower sealing groove in the embodiment of the present application.

[0031] Figure 5 yes Figure 4 Magnified view of part B.

[0032] Figure 6 It is a cross-sectional view showing the connection relationship between the mounting frame and the winding roller in the embodiment of the present application.

[0033] Figure 7 It is a cross-sectional view showing the connection relationship between the mounting frame and the pressure sensor in the embodiment of the present application.

[0034] Explanation of the accompanying drawings: 1. Sedimentation tank; 11. Mud discharge port; 12. Coagulation tank; 2. Drainage port; 3. Give way groove; 4. Liquid baffle plate; 41. Drainage channel; 5. Mounting frame; 51. Inclined plate; 6. Sealing rubber sleeve; 61. Sealing liquid chamber; 62. Sealing liquid pipe; 63. Sealing liquid valve; 7. Contact wheel; 71. Upper sealing groove; 72. Lower sealing groove; 8. Lifting rope; 81. Winding roller; 82. Connecting shaft; 83. Driving shaft; 84. Winding seat; 85. Winding motor; 9. Pressure sensor; 91. Detection bracket; 92. Detection motor; 93. Detection cross bar; 94. Detection vertical bar. DETAILED DESCRIPTION

[0035] The following is combined with Figures 1-7 This application is described in further detail.

[0036] The present application discloses a coagulation sedimentation separation device for sewage treatment.Figure 1 and Figure 2 , including a sedimentation tank 1, a mud discharge port 11 is provided at the bottom of the sedimentation tank 1, one end of the sedimentation tank 1 is connected to a coagulation tank 12, and a drainage port 2 is provided at the other end of the sedimentation tank 1. A clearance groove 3 is provided on the inner bottom wall of the drainage port 2, and a liquid baffle plate 4 is slidably arranged in the clearance groove 3 and the drainage port 2. A drainage channel 41 is formed between the top of the liquid baffle plate 4 and the inner top wall of the drainage port 2, and the liquid baffle plate 4 is used to control the opening of the drainage channel 41. A plurality of inclined plates 51 are installed in the sedimentation tank 1, and a mounting frame 5 is commonly arranged on the inclined plates 51. The mounting frame 5 is slidably arranged in the sedimentation tank 1, and the mounting frame 5 is fixedly connected to the liquid baffle plate 4. The sewage undergoes a coagulation reaction in the coagulation tank 12, and then the sewage containing flocs enters the sedimentation tank 1 for solid-liquid separation, and the solids precipitated to the bottom of the sedimentation tank 1 are discharged from the mud discharge port 11, and the supernatant is filtered through the inclined plate 51 and discharged from the drainage channel 41. When the liquid level of the supernatant is low, the mounting frame 5 and the liquid baffle 4 are synchronously lowered, and when the liquid level of the supernatant is high, the mounting frame 5 and the liquid baffle 4 are synchronously lowered. Thus, the height of the drainage channel 41 is dynamically adjusted according to the liquid level of the supernatant, so as to reduce the situation where the supernatant stays in the sedimentation tank 1 for a long time and improve the discharge efficiency of the supernatant.

[0037] In order to seal the gap between the liquid baffle plate 4 and the sedimentation tank 1, refer to Figures 1 to 5 , the outer wall of the liquid retaining plate 4 is sleeved with a sealing rubber sleeve 6, and a sealing liquid cavity 61 is provided in the sealing rubber sleeve 6, and the sealing liquid cavity 61 is used to fill the sealing medium. A sealing liquid pipe 62 is connected to the sealing liquid cavity 61, and a sealing liquid valve 63 is installed on the sealing liquid pipe 62. An upper sealing groove 71 is provided on the inner wall of the discharge port 2, and a lower sealing groove 72 is provided on the inner wall of the concession groove 3. The upper sealing groove 71 and the lower sealing groove 72 are connected to each other, and the inner wall of the upper sealing groove 71 and the inner wall of the lower sealing groove 72 are both in contact with the outer wall of the sealing rubber sleeve 6. A plurality of contact wheels 7 are rotatably provided in the upper sealing groove 71 and the lower sealing groove 72, and the contact wheels 7 abut against the outer wall of the sealing rubber sleeve 6. When the liquid retaining plate 4 moves, a part of the sealing medium in the sealing liquid cavity 61 is discharged through the sealing liquid pipe 62, and the contact wheels 7 roll relative to the sealing rubber sleeve 6, thereby reducing the friction between the sealing rubber sleeve 6 and the sedimentation tank 1, and facilitating the movement of the liquid retaining plate 4. When the liquid baffle plate 4 is stationary, a sealing medium is injected into the sealing liquid cavity 61 through the sealing liquid pipe 62 , so that the sealing rubber sleeve 6 expands and fills between the liquid baffle plate 4 and the sedimentation tank 1 , thereby improving the sealing performance between the liquid baffle plate 4 and the sedimentation tank 1 .

[0038] In order to make the mounting frame 5 and the liquid baffle plate 4 rise and fall synchronously, refer to Figure 1 and Figure 6, a connecting shaft 82 is installed above the sedimentation tank 1. Winding rollers 81 are installed at both ends of the connecting shaft 82. Driving shafts 83 are installed at the ends of the winding rollers 81 that are away from each other. Winding seats 84 are rotatably arranged on the driving shafts 83, and the winding seats 84 are fixedly installed on the top of the sedimentation tank 1. A winding motor 85 is installed on the winding seat 84. The output shaft of the winding motor 85 penetrates through the winding seat 84, and the output shaft of the winding motor 85 is welded to the driving shaft 83. A lifting rope 8 is wound around the winding roller 81. The lifting rope 8 is connected to the installation frame 5, and the side wall of the installation frame 5 is in close contact with the inner wall of the sedimentation tank 1. The collecting motor drives the driving shaft 83 to rotate, and the driving shaft 83 drives the winding roller 81 to rotate. When the winding roller 81 rotates, the winding roller 81 winds and unwinds the lifting rope 8. When the lifting rope 8 is wound and unwound, the lifting rope 8 drives the installation frame 5 to rise and fall, and the installation frame 5 drives the liquid baffle 4 to rise and fall.

[0039] To facilitate the rapid discharge of the supernatant from the sedimentation tank 1, referring to Figure 1 and Figure 7 , a detection bracket 91 is installed on the installation frame 5. A detection motor 92 is installed on the detection bracket 91. A detection vertical rod 94 is installed on the output shaft of the detection motor 92. A number of detection cross rods 93 are installed on the side wall of the detection vertical rod 94, and a pressure sensor 9 is installed on the detection cross rod 93. The detection motor 92 starts to drive the detection vertical rod 94 to rotate. The detection vertical rod 94 drives the detection cross rod 93 to rotate, and the detection cross rod 93 drives the pressure sensor 9 to rotate. When the solid content in the supernatant is relatively high, the pressure value detected by the pressure sensor 9 is relatively high. At this time, the liquid baffle 4 rises to reduce the opening degree of the liquid discharge channel 41. When the solid content in the supernatant is relatively low, the pressure value detected by the pressure sensor 9 is relatively low. At this time, the liquid baffle 4 descends to increase the opening degree of the liquid discharge channel 41, so as to facilitate the rapid discharge of the supernatant from the sedimentation tank 1.

[0040] The implementation principle of a coagulation sedimentation separation device for sewage treatment in an embodiment of this application is as follows: Sewage undergoes a coagulation reaction in the coagulation tank 12, and then the sewage containing flocs enters the sedimentation tank 1 for solid-liquid separation. The solids precipitated to the bottom of the sedimentation tank 1 are discharged through the sludge discharge port 11, and the supernatant is filtered through the inclined plate 51 and discharged through the liquid discharge channel 41. When the liquid level height of the supernatant is relatively low, the collecting motor starts to drive the winding roller 81 to rotate. The winding roller 81 rotates to unwind the lifting rope 8, so that the lifting rope 8 drives the installation frame 5 and the liquid baffle 4 to descend synchronously. When the liquid level height of the supernatant is relatively high, the collecting motor starts to drive the winding roller 81 to rotate. The winding roller 81 rotates to wind the lifting rope 8, so that the lifting rope 8 drives the installation frame 5 and the liquid baffle 4 to rise synchronously. During the sewage treatment process, the height of the liquid discharge channel 41 is dynamically adjusted according to the liquid level of the supernatant, reducing the situation that the supernatant stays in the sedimentation tank 1 for a long time and improving the discharge efficiency of the supernatant.

[0041] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A coagulation sedimentation separation device for sewage treatment, comprising a sedimentation tank (1), a mud discharge port (11) being arranged at the bottom of the sedimentation tank (1), one end of the sedimentation tank (1) being connected to a coagulation tank (12), and a liquid discharge port (2) being arranged at the other end of the sedimentation tank (1), characterized in that: The bottom wall of the liquid discharge port (2) is provided with a clearance groove (3); the clearance groove (3) and a liquid baffle plate (4) are slidably arranged in the liquid discharge port (2); a liquid discharge channel (41) is formed between the top of the liquid baffle plate (4) and the top wall of the liquid discharge port (2); the liquid baffle plate (4) is used to control the opening of the liquid discharge channel (41); a plurality of inclined plates (51) are arranged in the sedimentation tank (1); a mounting frame (5) is arranged on the inclined plates (51); the mounting frame (5) is slidably arranged in the sedimentation tank (1); and the mounting frame (5) is fixedly connected to the liquid baffle plate (4).

2. A coagulation sedimentation separation device for sewage treatment according to claim 1, characterized in that: The outer wall of the liquid baffle plate (4) is sleeved with a sealing rubber sleeve (6), a sealing liquid cavity (61) is provided in the sealing rubber sleeve (6), the sealing liquid cavity (61) is used to be filled with a sealing medium, a sealing liquid pipe (62) is provided on the sealing liquid cavity (61), and a sealing liquid valve (63) is provided on the sealing liquid pipe (62), an upper sealing groove (71) is provided on the inner wall of the liquid discharge port (2), and a lower sealing groove (72) is provided on the inner wall of the clearance groove (3), the upper sealing groove (71) and the lower sealing groove (72) are communicated with each other, and the inner wall of the upper sealing groove (71) and the inner wall of the lower sealing groove (72) are both in contact with the outer wall of the sealing rubber sleeve (6).

3. A coagulation sedimentation separation device for sewage treatment according to claim 2, characterized in that: A plurality of contact wheels (7) are rotatably arranged in the upper sealing groove (71) and the lower sealing groove (72), and the contact wheels (7) abut against the outer wall of the sealing rubber sleeve (6).

4. A coagulation sedimentation separation device for sewage treatment according to claim 1, characterized in that: A connecting shaft (82) is arranged above the sedimentation tank (1), and winding rollers (81) are fixedly arranged at both ends of the connecting shaft (82), and a driving shaft (83) is fixedly arranged at one end of the winding rollers (81) away from each other, and a winding seat (84) is rotatably arranged on the driving shaft (83), and the winding seat (84) is fixedly connected to the top of the sedimentation tank (1), and a lifting rope (8) is wound around the winding roller (81), and the lifting rope (8) is connected to the installation frame (5).

5. A coagulation sedimentation separation device for sewage treatment according to claim 4, characterized in that: A winding motor (85) is fixedly arranged on the winding seat (84), and an output shaft of the winding motor (85) passes through the winding seat (84), and the output shaft of the winding motor (85) is fixedly connected to the driving shaft (83).

6. A coagulation sedimentation separation device for sewage treatment according to claim 4, characterized in that: The side wall of the installation frame (5) and the inner wall of the sedimentation tank (1) are in contact with each other.

7. The coagulation sedimentation separation device for sewage treatment according to claim 1, characterized in that: A detection vertical rod (94) is rotatably arranged on the installation frame (5), a plurality of detection horizontal rods (93) are fixedly arranged on the side wall of the detection vertical rod (94), and a pressure sensor (9) is fixedly arranged on the detection horizontal rod (93).

8. A coagulation sedimentation separation device for sewage treatment according to claim 7, characterized in that: A detection bracket (91) is fixedly arranged on the installation frame (5), a detection motor (92) is fixedly arranged on the detection bracket (91), and an output shaft of the detection motor (92) is fixedly connected to a detection vertical rod (94).

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