Sand-water separation device in domestic sewage pretreatment process

Abstract

The utility model relates to the technical field of sand-water separation, in particular to a sand-water separation device in a domestic sewage pretreatment process, which comprises a separation box and a separator arranged in the separation box, the separator is arranged at the top in the separation box, the separator comprises the separation box, the separation box is used for separating water from sand, and the separation box is used for separating water from sand. The utility model discloses a sand-gravel separator, which comprises a separating box and a separator, the separating box is arranged in the separating box in a sliding way through a guide rail, one side of the separator is also provided with a through groove for the sand-gravel to pass through, the separating box is arranged in the separating box in a sliding way through the guide rail, and the separator also comprises a driving mechanism for driving the separating box to move in a reciprocating way. Water flows down from the holes of the screen box, and the gravels are discharged from the grooves in the side face of the screen box, so that the situation that the gravels are clamped in the screen box through pushing of a push plate in a traditional device is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of sand-water separation, in particular to a sand-water separation device in the process of pre-treatment of domestic sewage. Background Art

[0002] The main purpose of sand-water separation is to separate sand and gravel from water in sand-containing water bodies to purify water quality, protect water resources, and reduce the burden of subsequent treatment processes. Through sand-water separation, sand and gravel resources in the water can be recovered while increasing the reuse value of water. Sand-water separation requires the use of a sand-water separation device.

[0003] Chinese patent CN113842697B discloses a sand-water separation device for sewage pump station pretreatment, which includes a base, a square frame, a water inlet pipe, an intermittent moving component, etc.; a pair of bases are provided on other supporting equipment, a square frame is connected between the two bases, a pair of rectangular holes are provided at the bottom of the square frame, a circular hole is provided at the bottom of the square frame, a water inlet pipe is connected to the top of the square frame, the water inlet pipe is connected to the square frame, and the intermittent moving component is provided on the square frame.

[0004] In the above structure, the telescopic scraper will scrape off the large particles of sand and gravel on the arc-shaped filter frame, and the movable push plate will push out the small particles of sand and gravel on the fixed isolation frame, thereby effectively filtering the sewage and providing convenience for the subsequent recycling of the separated sand and gravel, achieving the effect of effectively filtering the sewage. However, in the process of pushing the sand and gravel out, the push plate will exert a downward force, which may easily press part of the sand and gravel into the holes in the filter screen, and the sand and gravel may easily get stuck on the filter frame, affecting the stable operation of the sand-water separator. Utility Model Content

[0005] The purpose of the utility model is to provide a sand-water separation device in the process of pretreatment of domestic sewage. By adopting a reciprocating screen box, the screen box separates sand and gravel during movement, and water flows down from the holes of the screen box, and sand and gravel are discharged from the grooves on the side of the screen box, avoiding the traditional device that uses a push plate to push the sand and gravel to get stuck in the screen box.

[0006] In order to solve the problems of the existing technology, the utility model provides a sand-water separation device in the pretreatment process of domestic sewage, including a separation box and a separator arranged in the separation box, the separator is arranged at the top inside the separation box, the separator includes a screen box, the screen box is used to separate water and sand and gravel from each other, and a through groove for sand and gravel to pass through is also provided on one side of the separator. The screen box is slidably arranged in the separation box by a guide rail, and the separator also includes a driving mechanism for driving the screen box to move back and forth.

[0007] Preferably, the driving mechanism includes a second connecting rod and a telescopic driving member, the second connecting rod is installed inside the separation box through an axis, one end of the second connecting rod is connected to the first connecting rod through an axis, one end of the first connecting rod is movably connected to one side of the screen box, the other end of the second connecting rod is connected to the third connecting rod through an axis, one end of the third connecting rod is movably connected to the moving block through the axis, the output end of the telescopic driving member is fixedly connected to the moving block, and the telescopic driving member is fixed on the separation box.

[0008] Preferably, a guide plate is fixed on one side of the separation box near the bottom of the separator, and a plurality of through holes are opened on the guide plate. A discharge plate is connected to the outside of the separation box, and the discharge plate and the guide plate are connected to each other. A cavity for sand and gravel to pass through is formed between the guide plate and the separation box. When the sand and gravel on the screen box falls into the cavity between the guide plate and the separation box, water falls from the through holes on the guide plate, and the sand and gravel fall from the guide plate to the discharge plate, and the sand and gravel fall from the discharge plate and are discharged.

[0009] Preferably, the separation box is further provided with an air supply device for cleaning the screen box, the air supply device blows air onto the screen box, and the air passes through the holes on the screen box to prevent sand and gravel from being stuck in the holes on the screen box.

[0010] Preferably, the air supply device includes a diverter pipe, which is arranged at the bottom of the screen box. There are multiple diverter pipes at the bottom of the screen box. Several nozzles for air jetting are distributed on the diverter pipes. Connecting pipes are connected between the diverter pipes. One end of the connecting pipe passes through the separation box and is connected to a fan. When the fan is started, air is drawn into the diverter pipe, and the air is ejected from the nozzles on the diverter pipe. The gas blows out the sand and gravel through the holes.

[0011] Preferably, a discharger is installed near the bottom of the separation box, which is used to discharge sand and gravel. The discharger includes a connecting tube, one end of which extends to the outside of the separation box, and the connecting tube is provided with a through hole for water to pass through at a position inside the separation box.

[0012] Preferably, a hopper for collecting water and sand and gravel is fixed on the connecting cylinder at the position of the separation box, and a sand and gravel discharge port for discharging sand and gravel is installed on the outside of the separation box on the connecting cylinder. The discharger also includes a rotating drive component, which is fixed on the outside of the separation box. A screw rod is rotatably arranged in the connecting cylinder, and the rotating drive component is used to drive the screw rod to rotate and screw out the sand and gravel.

[0013] Preferably, the top of the separation box is connected to a water inlet pipe for water intake, and the bottom of the separation box is connected to a water outlet pipe for water discharge.

[0014] Compared with the prior art, the beneficial effects of the present invention are: the sand-water separation device in the domestic sewage pretreatment process has a reasonable structure and has the following advantages:

[0015] By providing a screen box, a first connecting rod, a second connecting rod, a third connecting rod, a moving block and a telescopic driving member, the screen box can be reciprocated to separate sand and gravel from water, thereby avoiding sand and gravel being stuck in the screen box. Therefore, when in use, by starting the telescopic driving member, the telescopic driving member causes the moving block to move, the moving block causes the third connecting rod to move, the third connecting rod causes the second connecting rod to move, and then the first connecting rod moves, thereby driving the screen box to move back and forth. The reciprocating movement of the screen box separates sand and gravel from water, avoiding the problem of traditional devices using push plates to push sand and gravel to cause sand and gravel to be stuck in the hole.

[0016] The screen box can be further prevented from being clogged by sand and gravel by providing a fan, a diverter pipe and a connecting pipe. A diverter pipe is installed in the separation box, and a number of nozzles are distributed on the diverter pipe. When the fan is started, the fan makes the air flow, and the air can move upward from the holes on the screen box, thereby preventing sand and gravel from clogging the holes at the bottom of the screen box.

[0017] By providing a guide plate, when the sand and gravel in the screen box falls onto the guide plate, water falls into the separation box through the holes, and the sand and gravel fall from the discharge plate, thus achieving the effect of convenient sand and gravel discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the first three-dimensional structure of a sand-water separation device in the process of pretreatment of domestic sewage.

[0019] Figure 2 The present invention is a schematic diagram of the cross-sectional structure of a sand-water separation device in the process of pretreatment of domestic sewage.

[0020] Figure 3 It is a schematic diagram of the second three-dimensional structure of a sand-water separation device in the process of pretreatment of domestic sewage.

[0021] Figure 4 It is a schematic diagram of the third three-dimensional structure of a sand-water separation device in the process of pretreatment of domestic sewage.

[0022] Figure 5 It is a schematic diagram of the three-dimensional structure of a separator of a sand-water separation device in the process of pretreatment of domestic sewage.

[0023] Figure 6 The present invention is a schematic diagram of the front view structure of a separator of a sand-water separation device in the process of pre-treatment of domestic sewage.

[0024] The numbers in the figure are: 1. separation box; 11. water inlet pipe; 12. water outlet pipe; 13. discharger; 131. connecting cylinder; 132. screw rod; 133. rotating drive member; 134. sand and gravel discharge port; 135. hopper; 14. discharge plate; 15. air supply device; 151. fan; 152. diverter pipe; 153. connecting pipe; 16. separator; 161. screen box; 162. first connecting rod; 163. second connecting rod; 164. third connecting rod; 165. moving block; 166. telescopic drive member; 17. guide plate. DETAILED DESCRIPTION

[0025] In order to further understand the features, technical means, specific objectives and functions achieved by the present invention, the present invention is described in further detail below in conjunction with the accompanying drawings and specific implementation methods.

[0026] Reference Figures 1-6 As shown, the utility model provides: a sand-water separation device in the process of pre-treatment of domestic sewage, comprising a separation box 1 and a separator 16 arranged in the separation box 1, the separator 16 being arranged at the top inside the separation box 1, the separator 16 including a screen box 161, the screen box 161 being used to separate water and sand and gravel from each other, a through slot for sand and gravel to pass through being further provided on one side of the separator 16, the screen box 161 being slidably arranged in the separation box 1 by a guide rail, the separator 16 also including a driving mechanism for driving the screen box 161 to move back and forth, the driving mechanism including There are a second connecting rod 163 and a telescopic driving member 166. The second connecting rod 163 is installed inside the separation box 1 through an axis. One end of the second connecting rod 163 is connected to the first connecting rod 162 through an axis. One end of the first connecting rod 162 is movably connected to one side of the screen box 161. The other end of the second connecting rod 163 is connected to the third connecting rod 164 through an axis. One end of the third connecting rod 164 is movably connected to the moving block 165 through an axis. The output end of the telescopic driving member 166 is fixedly connected to the moving block 165, and the telescopic driving member 166 is fixed on the separation box 1.

[0027] Sewage first enters separation box 1, where the sand and gravel in the sewage mix with water. When the sewage flows through screen box 161, due to the special design of screen box 161 (such as the mesh structure), larger sand and gravel particles are trapped in screen box 161, while water continues to flow through screen box 161. To enhance the screening effect, screen box 161 is designed to have a reciprocating structure. This movement process is completed by the drive mechanism. When the telescopic drive member 166 (such as a cylinder, electric push rod, etc.) is working, it pushes the moving block 165 to move along a fixed track. The movement of the moving block 165 is transmitted to the screen box 161 through the connecting rod mechanism of the third connecting rod 164, the second connecting rod 163 and the first connecting rod 162, causing the screen box 161 to reciprocate within the separation box 1. This movement helps to shake off the sand and gravel adhering to the screen, prevent the screen from clogging, and improve screening efficiency.

[0028] The reciprocating motion of the screen box 161 effectively improves the screening efficiency and reduces the risk of blockage of the screen box 161. The telescopic drive member 166 is used as a power source to realize the automatic reciprocating motion of the screen box 161, thereby reducing the manual operation cost. The reciprocating motion of the screen box 161 helps to automatically clean the screen, thereby reducing the frequency and difficulty of manual cleaning.

[0029] A guide plate 17 is fixed to one side of the separation box 1 near the bottom of the separator 16. The guide plate 17 is provided with a number of through holes. The outside of the separation box 1 is connected to a discharge plate 14. The discharge plate 14 and the guide plate 17 are connected to each other. A cavity for sand and gravel to pass through is formed between the guide plate 17 and the separation box 1. When the sand and gravel on the screen box 161 falls into the cavity between the guide plate 17 and the separation box 1, water falls from the through holes on the guide plate 17, and the sand and gravel fall from the guide plate 17 onto the discharge plate 14, and the sand and gravel fall from the discharge plate 14 and are discharged.

[0030] The sewage enters the separation box 1 and is preliminarily screened by the screen box 161. The water and sand and gravel are separated. The sand and gravel fall from the through groove of the screen box 161 into the cavity between the guide plate 17 and the separation box 1. The water flows out through the through holes on the guide plate 17, while the sand and gravel continue to slide downward along the guide plate 17, slide onto the discharge plate 14, fall, and be discharged.

[0031] The separation box 1 is also equipped with an air supply device 15 for cleaning the screen box 161 . The air supply device 15 blows air onto the screen box 161 . The air passes through the holes on the screen box 161 to prevent sand and gravel from getting stuck in the holes on the screen box 161 .

[0032] The air supply device 15 includes a diverter pipe 152, which is arranged at the bottom of the screen box 161. There are multiple diverter pipes 152 at the bottom of the screen box 161. Several nozzles for air jetting are distributed on the diverter pipe 152. A connecting pipe 153 is connected between the diverter pipes 152. One end of the connecting pipe 153 passes through the separation box 1 and is connected to the fan 151. When the fan 151 is started, air is drawn into the diverter pipe 152, and the air is ejected from the nozzle on the diverter pipe 152. The gas blows out the sand and gravel through the hole.

[0033] When fan 151 is started, it generates negative pressure and draws in outside air. The air is transported to diverter pipe 152 through connecting pipe 153, where it is evenly distributed to each nozzle. Since multiple diverter pipes 152 are provided at the bottom of screen box 161, it is ensured that the entire bottom surface of screen box 161 is adequately cleaned by air jets. The nozzles eject air at a certain speed and pressure, and when the air passes through the holes in screen box 161, it generates a strong impact. This impact helps to blow out or shake off sand and gravel particles stuck in screen box 161, thereby keeping screen box 161 unobstructed. The blown out or shaken off sand and gravel particles will fall onto the guide plate 17 and discharge plate 14 below, and then be collected and discharged according to the previous process.

[0034] The air supply device 15 can regularly clean the screen box 161 to prevent sand and gravel from clogging the screen, thereby improving screening efficiency and effect. By automatically starting and stopping the fan 151, the air supply device 15 can be automatically controlled to reduce manual operation costs.

[0035] A discharger 13 is also installed near the bottom of the separation box 1. The discharger 13 is used to discharge sand and gravel. The discharger 13 includes a connecting tube 131. One end of the connecting tube 131 extends to the outside of the separation box 1. The connecting tube 131 is also provided with a through hole inside the separation box 1 for water to pass through.

[0036] A hopper 135 for collecting water and sand and gravel is also fixed on the connecting tube 131 at the position of the separation box 1, and a sand and gravel discharge port 134 for discharging sand and gravel is also installed on the outside of the separation box 1 on the connecting tube 131. The discharger 13 also includes a rotating drive member 133, and the rotating drive member 133 is fixed to the outside of the separation box 1. A screw rod 132 is rotatably arranged in the connecting tube 131, and the rotating drive member 133 is used to drive the screw rod 132 to rotate and screw out the sand and gravel. The top of the separation box 1 is connected to a water inlet pipe 11 for water intake, and the bottom of the separation box 1 is connected to a water outlet pipe 12 for drainage.

[0037] Smaller sand and gravel flow along with the water through the hopper 135 and into the connecting cylinder 131. The through-holes in the connecting cylinder 131 allow water to pass through and flow into the lower part of the separating box 1, while the sand and gravel remain in the connecting cylinder 131. When a certain amount of sand and gravel accumulates in the connecting cylinder 131, the rotary drive 133 starts and drives the screw 132 to rotate. The rotation of the screw 132 pushes the sand and gravel forward until it is discharged from the sand and gravel discharge port 134.

[0038] Through the rotation of the spiral rod 132, sand and gravel can be efficiently discharged from the connecting cylinder 131, thereby improving the discharge efficiency. The automatic start and stop of the rotating drive member 133 realizes the automatic control of the discharge process and reduces the manual operation cost.

[0039] The above embodiments merely represent one or several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A sand-water separation device for domestic sewage pretreatment, characterized by: The invention comprises a separation box (1) and a separator (16) arranged in the separation box (1), wherein the separator (16) is arranged at the top of the separation box (1), and the separator (16) comprises a screen box (161) for separating water and sand and gravel from each other. A through slot for passing sand and gravel is also provided on one side of the separator (16), and the screen box (161) is slidably arranged in the separation box (1) via a guide rail. The separator (16) further comprises a driving mechanism for driving the screen box (161) to move back and forth.

2. The sand-water separation device for domestic sewage pretreatment according to claim 1, characterized in that: The driving mechanism includes a second connecting rod (163) and a telescopic driving member (166), the second connecting rod (163) is installed inside the separation box (1) through a shaft, one end of the second connecting rod (163) is connected to the first connecting rod (162) through a shaft, one end of the first connecting rod (162) is movably connected to one side of the screen box (161), the other end of the second connecting rod (163) is connected to the third connecting rod (164) through a shaft, one end of the third connecting rod (164) is movably connected to the moving block (165) through a shaft, the output end of the telescopic driving member (166) is fixedly connected to the moving block (165), and the telescopic driving member (166) is fixed on the separation box (1).

3. The sand-water separation device for domestic sewage pretreatment according to claim 1, characterized in that: A guide plate (17) is fixed on one side of the separation box (1) near the bottom of the separator (16), and a plurality of through holes are opened on the guide plate (17). A discharge plate (14) is connected to the outside of the separation box (1), and the discharge plate (14) and the guide plate (17) are connected to each other. A cavity for sand and gravel to pass through is formed between the guide plate (17) and the separation box (1). When sand and gravel on the screen box (161) fall into the cavity between the guide plate (17) and the separation box (1), water falls from the through holes on the guide plate (17), and sand and gravel fall from the guide plate (17) onto the discharge plate (14), and the sand and gravel fall from the discharge plate (14) and are discharged.

4. The sand-water separation device for domestic sewage pretreatment according to claim 1, characterized in that: The separation box (1) is also equipped with an air supply device (15) for cleaning the screen box (161). The air supply device (15) blows air onto the screen box (161). The air passes through the holes on the screen box (161) to prevent sand and gravel from being stuck in the holes on the screen box (161).

5. The sand-water separation device for domestic sewage pretreatment according to claim 4, characterized in that: The air supply device (15) includes a diverter pipe (152), which is arranged at the bottom of the screen box (161). A plurality of diverter pipes (152) are arranged at the bottom of the screen box (161). A plurality of nozzles for air jetting are distributed on the diverter pipe (152). A connecting pipe (153) is connected between the diverter pipes (152). One end of the connecting pipe (153) passes through the separation box (1) and is connected to the fan (151). When the fan (151) is started, air is drawn into the diverter pipe (152), and the air is ejected from the nozzle on the diverter pipe (152). The gas passes through the hole to blow out the sand and gravel.

6. The sand-water separation device for domestic sewage pretreatment according to claim 1, characterized in that: A discharger (13) is also installed near the bottom of the separation box (1). The discharger (13) is used to discharge sand and gravel. The discharger (13) includes a connecting tube (131). One end of the connecting tube (131) extends to the outside of the separation box (1). The connecting tube (131) is also provided with a through hole for water to pass through at a position inside the separation box (1).

7. The sand-water separation device for domestic sewage pretreatment according to claim 6, characterized in that: A hopper (135) for collecting water and sand and gravel is fixed on the connecting cylinder (131) at the position of the separation box (1), and a sand and gravel discharge port (134) for discharging sand and gravel is installed on the connecting cylinder (131) outside the separation box (1). The discharger (13) also includes a rotary drive member (133), the rotary drive member (133) is fixed outside the separation box (1), and a screw rod (132) is rotatably provided in the connecting cylinder (131). The rotary drive member (133) is used to drive the screw rod (132) to rotate and screw out the sand and gravel.

8. The sand-water separation device for domestic sewage pretreatment according to claim 1, characterized in that: The top of the separation box (1) is connected to a water inlet pipe (11) for water intake, and the bottom of the separation box (1) is connected to a water outlet pipe (12) for water discharge.

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