A sand-water separation device for domestic sewage treatment

Abstract

The invention discloses a sand-water separation device for treating domestic sewage, comprising a sand settling hopper and a control pipe, wherein one side of the sand settling hopper is open, the control pipe is away from the open side of the sand settling hopper, the inner side wall of the sand settling hopper is gradually reduced from the open side thereof, and is connected to the control pipe; an auger is arranged in the control pipe, and two working modes are adopted. In the passive mode, a driving motor works intermittently, and whether the driving motor is started is determined by the amount of sand material deposited at the bottom of the sand settling hopper. In this state, the water flow is stable, the natural deposition of sand material is not disturbed, the deposition speed is fast, the sand content of overflow water is low, and the intermittent operation of the driving motor can also save energy consumption; in the active mode, the driving motor works with high efficiency, can adapt to the situation where the sewage treatment task is large, and at the same time drives the control pipe to slide upward, so as to increase the lifting height of the sand material, and effectively avoid the problem of excessive water content of the sand material simply for increasing the sewage treatment efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of sewage treatment, and specifically relates to a sand-water separation device for domestic sewage treatment. Background Art

[0002] In domestic sewage treatment, sand and water separation is one of the processes. Since the flow rate of sewage is not constant during domestic sewage treatment, the existing sand and water separation device has an auger which will affect the deposition of sand, resulting in a high sand content in the overflow water. When working at high efficiency, simply to improve the efficiency of domestic sewage treatment, the water content of the sand material is high. Summary of the invention

[0003] In order to solve the above problems existing in the prior art, the present invention aims to provide a sand-water separation device for domestic sewage treatment.

[0004] The technical solution adopted by the present invention is:

[0005] A sand-water separation device for domestic sewage treatment comprises a sand settling hopper and a control pipe, wherein one side of the sand settling hopper is open, and the control pipe is away from the open side of the sand settling hopper, and the inner side wall of the sand settling hopper gradually shrinks from the open side and is connected to the control pipe; an auger is arranged in the control pipe, and a drive motor is detachably mounted on one end of the control pipe, and the auger is driven by the drive motor; the control pipe and the sand settling hopper are slidably connected, and a sealing plate is arranged at the end of the control pipe away from the drive motor, and the sealing plate is rotatably connected to the end of the auger away from the drive motor; a rack is fixedly arranged on the outer side wall of the control pipe, and a mounting frame is fixedly arranged on one side of the sand settling hopper, and a control motor is detachably mounted on the mounting frame, and the sand-water separation device comprises a passive mode and an active mode, and the control motor drives the control pipe to slide relative to the sand settling hopper to realize switching between the two modes.

[0006] As a preferred embodiment of the present invention, domestic sewage enters the sand settling hopper from the open side of the sand settling hopper, a mounting sleeve is fixedly provided at one end of the control tube close to the drive motor, and a sand dropout port is fixedly provided on one side of the mounting sleeve.

[0007] As a preferred embodiment of the present invention, the drive motor is fixedly connected to the mounting sleeve, a baffle is fixedly provided in the mounting sleeve, an output shaft of the drive motor passes through the baffle, and the output shaft of the drive motor is fixedly connected to the auger.

[0008] As a preferred embodiment of the present invention, a gear rod is fixedly provided on the output shaft of the control motor, the gear rod is meshed with the rack, a connecting plate is fixedly provided on one side of the sand settling hopper, and one end of the gear rod away from the control motor is rotatably connected to the connecting plate.

[0009] As a preferred embodiment of the present invention, one end of the control tube away from the drive motor is connected to the internal space of the sand settling hopper, and one end of the control tube located in the sand settling hopper is provided with a sand inlet, and the auger at the sand inlet is exposed in the sand settling hopper.

[0010] As a preferred embodiment of the present invention, an extension tube is provided on the side of the sand settling hopper away from the drive motor, the extension tube is fixedly connected to the outer wall of the sand settling hopper, the extension tube is communicated with the control tube, the end of the auger away from the drive motor is located in the extension tube, and a slide groove is provided on one side of the extension tube.

[0011] As a preferred embodiment of the present invention, a contact plate is fixedly provided at one end of the extension tube away from the drive motor, the sealing plate is located in the extension tube, a control spring is provided between the contact plate and the sealing plate, and both ends of the control spring are fixedly connected to the contact plate and the sealing plate respectively.

[0012] As a preferred embodiment of the present invention, the extension tube and the control tube are both in an inclined state, the axes of the extension tube and the control tube coincide, the inner diameter of one end of the control tube close to the extension tube is larger than the outer diameter of the extension tube at the slide groove, and the end of the control tube away from the drive motor is slidably connected to the slide groove.

[0013] As a preferred embodiment of the present invention, the rack rod is in a vertical state, the rack is a helical rack, and the sliding direction of the rack relative to the sand trap is parallel to the axis of the control tube.

[0014] As a preferred embodiment of the present invention, a touch sensor is provided between the contact plate and the sealing plate, the touch sensor is fixedly connected to the sealing plate, the touch sensor is located in the control spring, and the touch sensor, the control motor and the drive motor are respectively communicatively connected.

[0015] The beneficial effects of the present invention are as follows: as a sand-water separation device for domestic sewage treatment, the present invention has two working modes. In the passive mode, the drive motor works intermittently, and whether the drive motor is started is determined by the amount of sand material deposited at the bottom of the sand settling hopper. In this state, the water flow is smooth, the sand material naturally deposits without interference, the deposition speed is fast, the overflow water has a low sand content, and the intermittent operation of the drive motor can also save energy. In the active mode, the drive motor works efficiently and can adapt to the situation where the sewage treatment task volume is large. At the same time, the drive control tube is driven to slide upward, which can increase the lifting height of the sand material and effectively avoid the problem of excessive water content of the sand material simply for increasing the sewage treatment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0017] Figure 1 It is a schematic diagram of the structure of the present invention;

[0018] Figure 2 The present invention Figure 1 A schematic diagram of the front view structure of

[0019] Figure 3 The present invention Figure 1 A schematic cross-sectional structure diagram of ;

[0020] Figure 4 The present invention Figure 1 Schematic diagram of the structure after the extension tube is hidden. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention, that is, the embodiments described are only part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.

[0023] Combine the following Figure 1-4The specific implementation mode of the present invention is described as a sand-water separation device for treating domestic sewage, comprising a sand settling hopper 13 and a control pipe 18, wherein one side of the sand settling hopper 13 is open, and the control pipe 18 is away from the open side of the sand settling hopper 13, and the inner wall of the sand settling hopper 13 gradually narrows from the open side thereof and is connected to the control pipe 18; an auger 14 is arranged in the control pipe 18, and a drive motor 16 is detachably mounted on one end of the control pipe 18, and the auger 14 is driven by the drive motor 16; the control pipe 18 is slidably connected to the sand settling hopper 13, and a sealing plate 27 is arranged on the end of the control pipe 18 away from the drive motor 16, and the sealing plate 27 is rotatably connected to the end of the auger 14 away from the drive motor 16. The control tube 18 and the sand settling bucket 13 are not fixedly connected, but can slide. The present invention has two working modes, a passive mode and an active mode. In the passive mode, the drive motor 16 works intermittently, and whether the drive motor 16 is started is determined by the amount of sand material deposited at the bottom of the sand settling bucket 13. In this state, the water flow is smooth, the sand material naturally deposits without interference, the deposition speed is fast, and the sand content of the overflow water is low. The intermittent operation of the drive motor 16 can also save energy. In the active mode, the drive motor 16 works with high efficiency and can adapt to the situation of large sewage treatment tasks. At the same time, it drives the control tube 18 to slide upward to increase the lifting height of the sand material and avoid excessive water content of the sand material.

[0024] Advantageously, domestic sewage enters the sand hopper 13 from the open side of the sand hopper 13, and a mounting sleeve 15 is fixedly provided at one end of the control tube 18 close to the drive motor 16, and a sand outlet 17 is fixedly provided at one side of the mounting sleeve 15. The mounting sleeve 15 provides a stable working state for the drive motor.

[0025] Advantageously, the drive motor 16 is fixedly connected to the mounting sleeve 15, a baffle 30 is fixedly arranged in the mounting sleeve 15, an output shaft of the drive motor 16 passes through the baffle 30, and the output shaft of the drive motor 16 is fixedly connected to the auger 14. The baffle 30 has a waterproof sealing effect, preventing sewage and sand from entering the drive motor 16.

[0026] Advantageously, a rack 24 is fixedly provided on the outer wall of the control tube 18, a mounting frame 19 is fixedly provided on one side of the sand hopper 13, a control motor 21 is detachably mounted on the mounting frame 19, a gear rod 20 is fixedly provided on the output shaft of the control motor 21, the gear rod 20 is meshed with the gear rod 24, a connecting plate 23 is fixedly provided on one side of the sand hopper 13, and one end of the gear rod 20 away from the control motor 21 is rotatably connected to the connecting plate 23. The sand hopper 13 is supported and fixed by a steel frame, and its open side is horizontal.

[0027] Advantageously, the end of the control tube 18 away from the drive motor 16 is connected to the inner space of the sand settling hopper 13, and the end of the control tube 18 located in the sand settling hopper 13 is provided with a sand inlet 29, and the auger 14 at the sand inlet 29 is exposed in the sand settling hopper 13. The sand inlet 29 is equivalent to a notch opened at one end of the control tube 18, Figure 1 The state shown is the extreme position in the active mode. In this position, the position of the sand dropout port 17 is the highest, the effective diameter of the sand inlet 29 is the largest, and the sand accumulation area is the largest. The position of the control pipe 18 in the active mode is determined by the sewage treatment task volume. The larger the task volume, the higher the height of the control pipe 18 is required; in the passive mode, the position of the control pipe 18 is floating.

[0028] Advantageously, an extension tube 11 is provided on the side of the sand hopper 13 away from the drive motor 16, the extension tube 11 is fixedly connected to the outer wall of the sand hopper 13, the extension tube 11 is connected to the control tube 18, the end of the auger 14 away from the drive motor 16 is located in the extension tube 11, and a chute 22 is provided on one side of the extension tube 11. The chute 22 is matched with the sand inlet 29 of the control tube 18, and the two are tightly slidably connected without water leakage or sand leakage.

[0029] Advantageously, a contact plate 25 is fixedly disposed at one end of the extension tube 11 away from the drive motor 16, the sealing plate 27 is located in the extension tube 11, a control spring 26 is disposed between the contact plate 25 and the sealing plate 27, and both ends of the control spring 26 are respectively fixedly connected to the contact plate 25 and the sealing plate 27. The elastic coefficient of the control spring 26 is relatively large, and when the sand trap 13 is completely filled with clean water, it is not enough to compress the control spring 26 to a fully compressed state.

[0030] Advantageously, the extension tube 11 and the control tube 18 are both in an inclined state, the axes of the extension tube 11 and the control tube 18 coincide, the inner diameter of the end of the control tube 18 close to the extension tube 11 is larger than the outer diameter of the extension tube 11 at the chute 22, and the end of the control tube 18 away from the drive motor 16 is slidably connected to the chute 22. When the auger 14 moves, it moves synchronously with the control tube 18, and when the auger 14 moves, it slides relative to the extension tube 11.

[0031] Advantageously, the rack bar 20 is in a vertical state, the rack bar 24 is a helical rack bar, and the sliding direction of the rack bar 24 relative to the sand trap 13 is parallel to the axis of the control tube 18. The inclination of the rack bar 24 is consistent with that of the control tube 18.

[0032] Advantageously, a touch sensor 28 is provided between the contact plate 25 and the sealing plate 27, the touch sensor 28 is fixedly connected to the sealing plate 27, the touch sensor 28 is located in the control spring 26, and the touch sensor 28, the control motor 21 and the drive motor 16 are respectively connected in communication. In the passive mode, the control motor 21 is not started, and its output shaft is kept not locked, and the touch sensor 28 feeds back a signal to the drive motor 16, thereby controlling the drive motor 16 to work; in the active mode, after the control motor 21 drives the control tube 18 to move to a suitable position, the control motor 21 stops working and its output shaft is locked, the sand bucket 13 and the control tube 18 have a stable working state, the output shaft rotation angle of the control motor 21 reflects the position of the control tube 18, the control motor 21 converts the position of the control tube 18 into an electrical signal and feeds it back to the drive motor 16, and the drive motor 16 selects a suitable power to cooperate with the control motor 21, so that the flow of sewage in and out of the sand bucket 13 is equal.

[0033] Working principle of the present invention:

[0034] When the domestic sewage treatment task is small, the domestic sewage is pumped into the sand settling hopper 13 from the upper open side. The liquid level of the domestic sewage in the conical sand settling hopper 13 gradually increases. The sand in the domestic sewage can settle by itself under the action of gravity, and the upper water flows from the overflow port 12 to the next treatment process.

[0035] In the above process, the domestic sewage will fill the area below the overflow port 12, and the extension pipe 11 and a part of the control pipe 18 will be filled with domestic sewage. The weight of the domestic sewage is not enough to press the control spring 26. In this state, the control pipe 18 will not slide with the sand settling bucket 13.

[0036] When the sand material at the bottom of the sand settling hopper 13 is deposited to a certain extent, the sand material will enter the extension tube 11 and the control tube 18. The weight of the sand is large, which will press the sealing plate 27 and the control spring 26, so that the control spring 26 is compressed;

[0037] Since the output shaft of the control motor 21 is not locked when it is not in operation, the control tube 18 and the auger 14 will move synchronously, causing the sealing plate 27 to slide relative to the inner wall of the extension tube 11, and one end of the sand inlet 29 of the control tube 18 will slide and overlap with the chute 22 of the extension tube 11, but it will not affect the sealing effect of the tube cavity formed by the extension tube 11 and the control tube 18;

[0038] Until the touch sensor 28 contacts the contact plate 25, the touch sensor 28 feeds back a signal to the drive motor 16, the drive motor 16 starts, controls the auger 14 to rotate, and the rotation of the auger 14 gradually lifts the sand material at one end of the extension tube 11. Due to the strong fluidity of water, during the lifting of the sand material, the sewage lifted along with the sand material will gradually flow back along the gap between the auger 14 and the control tube 18. Eventually, most of the sand material will fall at the sand dropout port 17 and be transported after being taken over by supporting transportation equipment such as engineering vehicles.

[0039] After the sand material is lifted, the sand and water are separated, the control spring 26 gradually recovers, the touch sensor 28 feedbacks a signal to stop the drive motor 16, and the water flow inside the sand settling hopper 13 returns to a stable state. In this state, the sand material is naturally deposited and will not be disturbed by the auger 14. The deposition speed is fast and the overflow water has a low sand content.

[0040] When the domestic sewage treatment task is large, the sewage flow rate entering the grit hopper 13 increases, and the sewage flow rate overflowing from the overflow port 12 also increases accordingly. According to the task amount, the control motor 21 is controlled to start in coordination so that the flow rate of sewage entering and leaving the grit hopper 13 is kept constant.

[0041] The control motor 21 is started, the control gear rod 20 rotates, the gear rod 20 drives the rack 24 to move through meshing, the control tube 18 moves upward along with the rack 24, the auger 14, the mounting sleeve 15 and the drive motor 16 also move together, and the speed of the drive motor 16 increases at the same time;

[0042] In this state, the amount of sand material lifted per unit time increases, which will not cause the auger 14 to be blocked. At the same time, the height of the sand material is increased, and the domestic sewage has sufficient time to flow back, which will not cause the water content of the sand material to exceed the standard.

[0043] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A sand-water separation device for domestic sewage treatment, characterized in that: It includes a sand settling bucket and a control pipe, one side of the sand settling bucket is open, the control pipe is away from the open side of the sand settling bucket, the inner side wall of the sand settling bucket gradually shrinks from the open side and is connected to the control pipe; an auger is arranged in the control pipe, a drive motor is detachably mounted on one end of the control pipe, and the auger is driven by the drive motor; the control pipe and the sand settling bucket are slidably connected, a sealing plate is arranged at the end of the control pipe away from the drive motor, and the sealing plate is rotatably connected to the end of the auger away from the drive motor; a rack is fixedly arranged on the outer side wall of the control pipe, a mounting frame is fixedly arranged on one side of the sand settling bucket, and a control motor is detachably mounted on the mounting frame, and the sand-water separation device includes a passive mode and an active mode, and the control motor drives the control pipe to slide relative to the sand settling bucket to realize switching between the two modes; An extension tube is provided on the side of the sand settling hopper away from the driving motor, the extension tube is fixedly connected to the outer wall of the sand settling hopper, the extension tube is communicated with the control tube, the end of the auger away from the driving motor is located in the extension tube, and a slide groove is provided on one side of the extension tube; A contact plate is fixedly provided at one end of the extension tube away from the drive motor, the sealing plate is located in the extension tube, a control spring is provided between the contact plate and the sealing plate, and two ends of the control spring are fixedly connected to the contact plate and the sealing plate respectively; The extension tube and the control tube are both in an inclined state, the axes of the extension tube and the control tube coincide with each other, the inner diameter of one end of the control tube close to the extension tube is larger than the outer diameter of the extension tube at the slide groove, and the end of the control tube away from the drive motor is slidably connected to the slide groove.

2. The sand-water separation device for domestic sewage treatment according to claim 1 is characterized in that: Domestic sewage enters the sand settling hopper from the open side of the sand settling hopper, a mounting sleeve is fixedly provided at one end of the control pipe close to the driving motor, and a sand falling port is fixedly provided at one side of the mounting sleeve.

3. The sand-water separation device for domestic sewage treatment according to claim 2 is characterized in that: The drive motor is fixedly connected to the mounting sleeve, a baffle is fixedly provided in the mounting sleeve, an output shaft of the drive motor passes through the baffle, and the output shaft of the drive motor is fixedly connected to the auger.

4. The sand-water separation device for domestic sewage treatment according to claim 3 is characterized in that: A gear rod is fixedly provided on the output shaft of the control motor, the gear rod is meshed with the rack, a connecting plate is fixedly provided on one side of the sand settling hopper, and one end of the gear rod away from the control motor is rotatably connected to the connecting plate.

5. The sand-water separation device for domestic sewage treatment according to claim 4 is characterized in that: One end of the control tube away from the drive motor is communicated with the inner space of the sand settling hopper, and one end of the control tube located in the sand settling hopper is provided with a sand inlet, and the auger at the sand inlet is exposed in the sand settling hopper.

6. The sand-water separation device for domestic sewage treatment according to claim 4 is characterized in that: The rack rod is in a vertical state, the rack is a helical rack, and the sliding direction of the rack relative to the sand trap is parallel to the axis of the control tube.

7. A sand-water separation device for domestic sewage treatment according to claim 6, characterized in that: A touch sensor is provided between the contact plate and the sealing plate. The touch sensor is fixedly connected to the sealing plate. The touch sensor is located in the control spring. The touch sensor, the control motor and the drive motor are respectively connected in communication.

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