A sludge mixing device suitable for agricultural sewage buried equipment

Abstract

The utility model discloses a sludge mixing device suitable for underground agricultural sewage treatment equipment, including a ground, a tank body is arranged below the ground, a partition is fixedly connected to the inner wall of the tank body, and the tank body is divided into an anaerobic tank, an anoxic tank, an aerobic tank and a sedimentation tank under the action of the partition, and a mixing mechanism is installed on the surface of the tank body. The utility model provides a sludge mixing device suitable for underground agricultural sewage treatment equipment, which can effectively increase the concentration of residual sludge return, reduce the agitation of sludge in the sedimentation tank caused by gas reflux or pump reflux, thereby causing the effluent to increase. Since most of the rural domestic sewage treatment equipment on the market now adopts the MBBR activated sludge method, the anaerobic tank, anoxic tank and aerobic tank of this type of equipment cannot effectively discharge the sludge at the bottom of the sedimentation due to the presence of fillers, which can effectively solve this problem.

Description

Technical Field

[0001] The utility model belongs to the technical field of agricultural sewage treatment, and particularly relates to a sludge mixing device suitable for agricultural sewage buried equipment. Background Art

[0002] The operation effect of centralized rural domestic sewage treatment will inevitably receive more and more attention. Since most of the rural domestic sewage treatment equipment on the market now adopts the MBBR activated sludge method, the anaerobic tank, anoxic tank, and aerobic tank of this type of equipment cannot effectively discharge the sludge deposited at the bottom due to the presence of fillers.

[0003] Based on the above situation, township sewage treatment plants need to develop a sludge mixing device suitable for agricultural sewage buried equipment to increase the concentration of residual sludge return according to actual conditions. Utility Model Content

[0004] The purpose of the utility model is to address the deficiencies of the prior art and to propose a sludge mixing device suitable for underground agricultural sewage treatment equipment, so as to solve the problem that the prior art mostly adopts the MBBR activated sludge method for rural domestic sewage treatment equipment, resulting in the inability to effectively discharge the sludge deposited at the bottom of the anaerobic tank, anoxic tank and aerobic tank of this type of equipment due to the presence of fillers.

[0005] The technical purpose of this utility model is achieved through the following technical solutions:

[0006] A sludge mixing device suitable for agricultural sewage buried equipment comprises a ground, a tank body is arranged below the ground, a partition is fixedly connected to the inner wall of the tank body, and the tank body is divided into an anaerobic tank, an anoxic tank, an aerobic tank and a sedimentation tank under the action of the partition, a mixing mechanism is installed on the surface of the tank body, a sludge conveying pipe is installed on the surface of the mixing mechanism, and a second solenoid valve is installed on the surface of the right end of the sludge conveying pipe;

[0007] The mixing mechanism includes a negative pressure tank, a sludge collection pipe, a vacuum pump, a negative pressure pipe, a connecting pipe and a solenoid valve. The negative pressure tank is located below the ground. The right end of the sludge conveying pipe is connected to the left side of the negative pressure tank. The left end of the sludge conveying pipe passes through the tank body and the partition and extends to the inner cavity of the anaerobic tank.

[0008] Preferably, the right end of the connecting pipe is connected to the top of the left side of the negative pressure tank, and the two ends of the negative pressure pipe are respectively connected to the right side of the top of the negative pressure tank and the input end of the vacuum pump.

[0009] Preferably, the number of the sludge collection pipes is four, and one end of each pipe is connected to the bottom of the tank body, and the other end of each pipe is connected to the bottom of the connecting pipe. The number of the solenoid valves is five, and they are respectively installed on the surface of the sludge collection pipe close to one end of the connecting pipe and the surface of the negative pressure pipe close to one end of the negative pressure tank.

[0010] Preferably, a control cabinet is installed on the right rear side of the top of the ground, and the tops of the tank body and the negative pressure tank are connected to well pipes. There are five well pipes, and their upper ends extend to the top of the ground and are covered with well covers.

[0011] Preferably, a stirring mechanism is installed on the inner wall of the tank body, and the stirring mechanism includes a motor 1. One side of the motor 1 is fixedly connected to the left side of the tank body by bolts. The rotating shaft of the motor 1 passes through the tank body and is fixedly connected to a cross bar. The cross bar is rotatably embedded in one side of the partition through a sealed bearing, and a stirring paddle is welded on the surface of the cross bar.

[0012] Preferably, a sewage discharge mechanism is installed on the surface of the negative pressure tank, and the sewage discharge mechanism includes a vertical cylinder, which passes through and is fixedly embedded in the rear side of the top of the negative pressure tank, the top of the vertical cylinder extends to the top of the ground and is fixedly connected to motor 2 by bolts, the rotating shaft of motor 2 passes through the vertical cylinder and is fixedly connected to a conveying auger, and the top of the left side of the vertical cylinder is connected to an electromagnetic valve 3.

[0013] Preferably, a cover body is provided on the surface of the motor 1, and the right side of the cover body is fixedly connected to the left side of the tank body by bolts.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model provides a sludge mixing device suitable for underground agricultural sewage equipment. The sludge mixing device suitable for underground agricultural sewage equipment can effectively increase the concentration of residual sludge return, reduce the sludge agitation in the sedimentation tank caused by gas reflux or pump reflux, thereby causing the effluent to increase. Since most of the rural domestic sewage treatment equipment on the market now adopts the MBBR activated sludge method, the anaerobic tank, anoxic tank and aerobic tank of this type of equipment cannot effectively discharge the sludge deposited at the bottom due to the presence of fillers. The sludge mixing device suitable for underground agricultural sewage equipment can effectively solve this problem.

[0016] The sludge mixing device suitable for underground agricultural sewage treatment equipment proposes a new sludge mixing device for underground rural domestic sewage treatment equipment. On the one hand, it makes up for the operating defects of insufficient sludge return and low sludge discharge concentration caused by the miniaturization of A / O and A2 / O process sewage treatment equipment. On the other hand, it also brings new ideas to the existing underground A / O and A2 / O process sewage treatment equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0018] Figure 2 The utility model is a schematic diagram of a cross-sectional three-dimensional structure of an embodiment of the utility model.

[0019] Figure 3 The figure is a partial rear-view stereoscopic structural diagram of an embodiment of the utility model.

[0020] In the above drawings: 1. ground; 2. tank body; 3. partition; 4. anaerobic tank; 5. anoxic tank; 6. aerobic tank; 7. sedimentation tank; 8. blending mechanism; 81. negative pressure tank; 82. sludge collection pipe; 83. vacuum pump; 84. negative pressure pipe; 85. connecting pipe; 86. solenoid valve one; 9. sludge conveying pipe; 10. solenoid valve two; 11. control cabinet; 12. well pipe; 13. well cover; 14. stirring mechanism; 141. motor one; 142. cross bar; 143. stirring paddle; 15. sewage discharge mechanism; 151. vertical cylinder; 152. motor two; 153. conveying auger; 154. solenoid valve three; 16. cover body. DETAILED DESCRIPTION

[0021] 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. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] As a preferred embodiment of the present invention, Figure 1-Figure 3 As shown, this embodiment provides a sludge mixing device suitable for agricultural sewage buried equipment, including a ground 1, a tank body 2 is arranged below the ground 1, a partition 3 is fixedly connected to the inner wall of the tank body 2, and the tank body 2 is divided into an anaerobic tank 4, an anoxic tank 5, an aerobic tank 6 and a sedimentation tank 7 by the partition 3, a mixing mechanism 8 is installed on the surface of the tank body 2, a sludge conveying pipe 9 is installed on the surface of the mixing mechanism 8, and a solenoid valve 10 is installed on the surface of the right end of the sludge conveying pipe 9;

[0023] The mixing mechanism 8 includes a negative pressure tank 81, a sludge collection pipe 82, a vacuum pump 83, a negative pressure pipe 84, a connecting pipe 85 and a solenoid valve 86. The negative pressure tank 81 is located below the ground 1. The right end of the sludge conveying pipe 9 is connected to the left side of the negative pressure tank 81. The left end of the sludge conveying pipe 9 passes through the tank body 2 and the partition 3 and extends to the inner cavity of the anaerobic tank 4.

[0024] When the above embodiment is implemented, the vacuum pump 83 and the electromagnetic valve 86 on the negative pressure pipe 84 are manually opened through the control cabinet 11 to generate the required negative pressure state in the negative pressure tank 81, and the electromagnetic valve 86 corresponding to the functional area of ​​the sewage treatment equipment for sludge discharge is manually opened on the control cabinet 11, and the sludge deposited at the bottom of the functional area is quickly sent into the negative pressure tank 81 through the sludge collection pipe 82, and the corresponding electromagnetic valve 86 is closed. The operation and maintenance personnel take samples through the well pipe 12 of the negative pressure tank 81 to determine the state of the collected sludge. After comprehensively judging the system operation state and the state of the collected sludge, the operation and maintenance personnel choose whether to discharge it back to the biochemical system through the sludge conveying pipe 9 or wait for the sludge to stand in the negative pressure tank 81 (the supernatant after standing can be returned to the anaerobic tank 4 or the regulating tank) to clean the bottom sludge and transport it for disposal.

[0025] In some embodiments, Figure 2 and Figure 3 As shown, the right end of the connecting pipe 85 is connected to the top of the left side of the negative pressure tank 81, and the two ends of the negative pressure pipe 84 are respectively connected to the right side of the top of the negative pressure tank 81 and the input end of the vacuum pump 83.

[0026] In this embodiment, the sludge deposited at the bottom of the functional area is quickly sent into the negative pressure tank 81 through the sludge collection pipe 82.

[0027] In some embodiments, Figure 1 Figure 2 As shown, there are four sludge collection pipes 82, and one end of each is connected to the bottom of the tank body 2, and the other end is connected to the bottom of the connecting pipe 85. There are five solenoid valves 86, and they are respectively installed on the surface of the sludge collection pipe 82 close to one end of the connecting pipe 85 and the surface of the negative pressure pipe 84 close to one end of the negative pressure tank 81.

[0028] In order to ensure that the sludge deposited at the bottom of the functional area is sent to the negative pressure tank 81, when the vacuum pump 83 draws the negative pressure tank 81 to a certain negative pressure, the solenoid valve 86 on the sludge collection pipe 82 is opened, and the sludge at the bottom of the functional area of ​​the sewage treatment equipment connected to the sludge collection pipe 82 will quickly fill the negative pressure tank 81, thereby quickly collecting the sludge at the bottom of each functional area of ​​the sewage treatment equipment.

[0029] In some embodiments, Figure 2 and Figure 3 As shown, a control cabinet 11 is installed on the right rear side of the top of the ground 1, and the tops of the tank body 2 and the negative pressure tank 81 are connected to well pipes 12. There are five well pipes 12, and their upper ends extend to the top of the ground 1 and are covered with well covers 13.

[0030] This embodiment mainly considers the convenience of adding sludge to each functional area and taking out the sludge in the negative pressure tank 81.

[0031] In some embodiments, Figure 1 and Figure 2 As shown, a stirring mechanism 14 is installed on the inner wall of the tank body 2, and the stirring mechanism 14 includes a motor 141. One side of the motor 141 is fixedly connected to the left side of the tank body 2 by bolts. The rotating shaft of the motor 141 passes through the tank body 2 and is fixedly connected to a cross bar 142. The cross bar 142 is rotatably embedded in one side of the partition 3 through a sealed bearing, and a stirring paddle 143 is welded on the surface of the cross bar 142.

[0032] This embodiment mainly considers providing a stirring effect in addition to the sedimentation functional area. The rotation of the motor 141 shaft is controlled to rotate the cross bar 142 and the stirring paddle 143, so that the sludge in the anaerobic tank 4, the anoxic tank 5 and the aerobic tank 6 functional areas is stirred, thereby improving the treatment efficiency of each functional area.

[0033] In some embodiments, Figure 2 and Figure 3 As shown, a sewage discharge mechanism 15 is installed on the surface of the negative pressure tank 81, and the sewage discharge mechanism 15 includes a vertical cylinder 151. The vertical cylinder 151 passes through and is fixedly embedded in the rear side of the top of the negative pressure tank 81. The top of the vertical cylinder 151 extends to the top of the ground 1 and is fixedly connected to a motor 2 152 by bolts. The rotating shaft of the motor 2 152 passes through the vertical cylinder 151 and is fixedly connected to a conveying auger 153. The top of the left side of the vertical cylinder 151 is connected to an electromagnetic valve 3 154.

[0034] This embodiment mainly considers the convenient discharge of the bottom sludge in the negative pressure tank 81, controls the operation of the motor 2 152 and the opening of the solenoid valve 3 154, and the rotation of the rotating shaft of the motor 2 152 drives the rotation of the conveying auger 153 to transport the sludge in the negative pressure tank 81 upward, and then discharges it from the solenoid valve 3 154, which is convenient for cleaning and external disposal.

[0035] In some embodiments, Figure 2 As shown, a cover body 16 is movably sleeved on the surface of the motor 141, and the right side of the cover body 16 is fixedly connected to the left side of the tank body 2 by bolts.

[0036] This embodiment mainly considers protecting the surface of the motor 141 when buried underground, effectively preventing liquid from entering the motor 141 or being corroded and damaged, and improving the service life of the motor 141.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A sludge mixing device suitable for underground agricultural sewage equipment, comprising a ground surface (1), characterized in that: A tank body (2) is arranged below the ground (1), a partition (3) is fixedly connected to the inner wall of the tank body (2), and the tank body (2) is divided into an anaerobic tank (4), an anoxic tank (5), an aerobic tank (6) and a sedimentation tank (7) by the partition of the partition (3), a mixing mechanism (8) is installed on the surface of the tank body (2), a sludge conveying pipe (9) is installed on the surface of the mixing mechanism (8), and a solenoid valve 2 (10) is installed on the surface of the right end of the sludge conveying pipe (9); The mixing mechanism (8) comprises a negative pressure tank (81), a sludge collection pipe (82), a vacuum pump (83), a negative pressure pipe (84), a connecting pipe (85) and a solenoid valve (86); the negative pressure tank (81) is located below the ground (1); the right end of the sludge conveying pipe (9) is connected to the left side of the negative pressure tank (81); the left end of the sludge conveying pipe (9) passes through the tank body (2) and the partition (3) and extends to the inner cavity of the anaerobic tank (4).

2. A sludge mixing device suitable for agricultural sewage buried equipment according to claim 1, characterized in that: The right end of the connecting pipe (85) is in communication with the top of the left side of the negative pressure tank (81), and the two ends of the negative pressure pipe (84) are respectively in communication with the right side of the top of the negative pressure tank (81) and the input end of the vacuum pump (83).

3. The sludge mixing device suitable for agricultural sewage buried equipment according to claim 1 is characterized by: The number of the sludge collection pipes (82) is four, and one end of each pipe is connected to the bottom of the tank body (2), and the other end of each pipe is connected to the bottom of the connecting pipe (85). The number of the solenoid valves (86) is five, and each solenoid valve is installed on a surface of the sludge collection pipe (82) close to one end of the connecting pipe (85) and a surface of the negative pressure pipe (84) close to one end of the negative pressure tank (81), respectively.

4. The sludge mixing device suitable for agricultural sewage buried equipment according to claim 1 is characterized by: A control cabinet (11) is installed on the right rear side of the top of the ground (1), and the tops of the tank body (2) and the negative pressure tank (81) are both connected to well pipes (12). There are five well pipes (12), and their upper ends all extend to the top of the ground (1) and are covered with well covers (13).

5. The sludge mixing device suitable for agricultural sewage buried equipment according to claim 1 is characterized by: The inner wall of the tank body (2) is provided with a stirring mechanism (14), the stirring mechanism (14) comprising a motor 1 (141), one side of the motor 1 (141) being fixedly connected to the left side of the tank body (2) via bolts, the rotating shaft of the motor 1 (141) passing through the tank body (2) and being fixedly connected to a cross bar (142), the cross bar (142) being rotatably embedded in one side of the partition (3) via a sealed bearing, and a stirring paddle (143) being sleeved and welded on the surface of the cross bar (142).

6. The sludge mixing device suitable for agricultural sewage buried equipment according to claim 1, characterized in that: A sewage discharge mechanism (15) is installed on the surface of the negative pressure tank (81), and the sewage discharge mechanism (15) comprises a vertical cylinder (151), the vertical cylinder (151) passes through and is fixedly embedded in the rear side of the top of the negative pressure tank (81), the top of the vertical cylinder (151) extends to the top of the ground (1) and is fixedly connected to a second motor (152) by bolts, the rotating shaft of the second motor (152) passes through the vertical cylinder (151) and is fixedly connected to a conveying auger (153), and a solenoid valve three (154) is installed and connected to the top of the left side of the vertical cylinder (151).

7. The sludge mixing device suitable for agricultural sewage buried equipment according to claim 5, characterized in that: The surface of the motor 1 (141) is movably sleeved with a cover body (16), and the right side of the cover body (16) is fixedly connected to the left side of the tank body (2) via bolts.

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