Simple and efficient sewage treatment equipment for mixing plant

Abstract

The utility model discloses simple and efficient mixing plant sewage treatment equipment which comprises a main body, a feeding hole is formed in the upper part of the main body, and a first vibrating screen, a second vibrating screen, a sewage filtering device and a negative pressure generating device are sequentially arranged in the main body from top to bottom; a first motor in transmission connection with the first vibrating screen and a second motor in transmission connection with the second vibrating screen are respectively arranged outside the main body; a gravel outlet connected with the bottom of the first vibrating screen, a sand outlet connected with the bottom of the second vibrating screen, a sludge outlet connected with the bottom of the sewage filtering device and a clear water outlet connected with the bottom of the negative pressure generating device are formed in the side surface outside the main body. The simple and efficient sewage treatment device provided by the technical scheme is simple in structure, low in cost, good in filtering effect and very suitable for being popularized in small and medium-sized stirring stations.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a simple and efficient mixing station sewage treatment device. Background Art

[0002] At present, with the rapid development of urbanization in my country, real estate construction is at its peak. In addition, other infrastructure industries are also in a period of rapid development. As one of the indispensable building materials, the demand for concrete is increasing year by year, and the role of concrete mixing stations is becoming more and more prominent. However, concrete mixing stations will inevitably produce a large amount of sewage during the production process. The main sources of these sewage are: first, the sewage generated by the cleaning process of the mixing equipment during the production process, second, the sewage generated by the cleaning of concrete transport vehicles, and third, the sewage generated by the cleaning of the mixing station site, etc. These sewage contain gravel, sand, cement, additives and other components. If the sewage is not effectively treated and utilized, it will be discharged naturally, which will not only increase the cost of the enterprise, but also cause serious pollution to the environment. With the continuous improvement of people's living standards, my country's efforts to protect the environment have been continuously strengthened. How to do a good job in mixing station sewage treatment and ensure zero discharge of mixing station sewage has also become a top priority for the sustainable development of mixing stations. At present, some mixing stations purchase sewage treatment systems in order to meet environmental protection standards, but this type of sewage treatment system is large in size, not only occupying valuable site space, but more importantly, it is expensive, at least millions of yuan, and the production process operation cost is high, which brings a great economic burden to concrete production companies. How to manufacture a low-cost and efficient mixing station sewage treatment equipment has become an urgent problem that needs to be solved.

[0003] The utility model patent with authorization announcement number CN220715077U discloses a sewage treatment device for environmental protection of a concrete mixing main building. The main technical point is that the motor in the device drives the filter cylinder to roll and screen larger particles of sand and gravel aggregates. The overall device is tilted and can use the gravity of the larger particles of sand and gravel aggregates to quickly roll to the bottom discharge port. In addition, the baffle mechanism arranged inside the filter cylinder can screen the incoming mixed sewage layer by layer multiple times so that water, mud and other substances can be discharged from the filter mesh holes.

[0004] Although the above technical solution has a simple structure and can separate the aggregate containing crushed stone and sand from the sewage, and then filter it through a filter net to achieve the pollution reduction treatment effect, it cannot separate the crushed stone and sand in the aggregate together, and cannot be separated separately, which is not convenient for recycling. In addition, in the process of filtering and purifying sewage, the filter net is easily blocked, resulting in a very low sewage treatment efficiency.

[0005] Therefore, how to design a low-cost mixing station sewage treatment equipment that can separate gravel and sand separately, recycle and efficiently treat sewage has become a technical problem that we urgently need to solve. Utility Model Content

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a simple and efficient mixing station sewage treatment equipment, comprising a main body, a feed inlet is arranged on the upper part of the main body, a first vibrating screen, a second vibrating screen, a sewage filtering device and a negative pressure generating device are arranged inside the main body from top to bottom, a first motor connected to the first vibrating screen and a second motor connected to the second vibrating screen are arranged outside the main body, and a gravel outlet connected to the bottom of the first vibrating screen, a sand outlet connected to the bottom of the second vibrating screen, a sludge outlet connected to the bottom of the sewage filtering device and a clean water outlet connected to the bottom of the negative pressure generating device are arranged on the outer side of the main body.

[0007] Preferably, the mesh size of the first vibrating screen is slightly larger than the diameter of the sand; and the mesh size of the second vibrating screen is slightly smaller than the diameter of the sand.

[0008] Preferably, the sewage filtering device includes a metal support mesh, a filter cloth, a scraper, a first electric telescopic push rod and an automatic sealing mechanism; wherein the metal support mesh is fixed to the inner wall of the main body on all sides, the filter cloth is fixed to the upper surface of the metal support mesh by a rubber strip, the scraper is arranged above the filter cloth and is slidably connected to the inner wall of the main body on both sides, the scraper is fixed to the front end of the first electric telescopic push rod, the other end of the first electric telescopic push rod is fixed to the outer wall of the main body, and the automatic sealing mechanism is embedded in the main body near the front end of the first telescopic rod.

[0009] Preferably, the automatic sealing mechanism includes a sealing plate, a position sensor, a limit groove, a fixed plate, a drive motor, a pull rope and a compression spring; wherein, the sealing plate is embedded in a main body flush with the height of the filter cloth, the position sensor is embedded in the inner wall of the main body above the sealing plate, the limit groove is located in the main body corresponding to the two sides of the sealing plate, the fixed plate is fixedly embedded in the main body below the sealing plate, the outside of the drive motor is fixed to the outer wall of the main body, the output end of the drive motor is located in the main body above the fixed plate, the two ends of the pull rope are respectively fixedly connected to the output end of the drive motor and the lower end of the sealing plate, and the two ends of the compression spring are respectively fixed to the sealing plate and the fixed plate.

[0010] Preferably, the length of the limiting groove is equal to twice the height of the sealing plate.

[0011] Preferably, the negative pressure generating device includes a partition, a second electric telescopic rod and a one-way valve, the partition is fixed at the front end of the second electric telescopic rod, both sides of the partition are sealed with the inner wall of the main body and are slidably connected with the inner wall of the main body, the other end of the second electric telescopic rod is fixed to the outer wall of the main body, and the one-way valve is arranged in the clean water outlet.

[0012] Preferably, a water pressure sensor is arranged at the bottom of the main body.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: 1. By setting the first vibrating screen and the second vibrating screen inside the main body, the gravel and sand can be separated separately, which is convenient for recycling and utilization, and reduces the production cost of the enterprise. 2. The sewage filter device can remove excessive sludge on the filter cloth in time by designing a scraper and an automatic sealing mechanism on the filter cloth, which can reduce the problem of low sewage filtration and purification efficiency caused by sludge blockage and improve the sewage treatment efficiency. 3. By setting a negative pressure generating device, negative pressure can be formed in the main body below the sewage filter device through the movement of the partition, further improving the sewage filtration and purification speed and improving the sewage treatment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a front structural sectional view of the utility model;

[0015] Figure 2 It is a front perspective view of the utility model;

[0016] Figure 3 This is a partial front structural sectional view of the sewage filtering device of the utility model;

[0017] Figure 4 The utility model is a side structural sectional view of an automatic sealing mechanism;

[0018] Figure 5 This is a partial front structural sectional view of the negative pressure generating device of the utility model.

[0019] In the figure: 1 main body, 2 feed inlet, 3 first vibrating screen, 4 second vibrating screen, 5 gravel outlet, 6 sand outlet, 7 sludge outlet, 8 clean water outlet, 9 negative pressure generating device, 10 sewage filtering device, 11 first motor, 12 second motor, 13 water pressure sensor, 91 partition, 92 second electric telescopic rod, 93 one-way valve, 101 metal support net, 102 filter cloth, 103 scraper, 104 first electric telescopic push rod, 105 automatic sealing mechanism, 1051 sealing plate, 1052 position sensor, 1053 limit groove, 1054 fixing plate, 1055 driving motor, 1056 pull rope, 1057 compression spring. DETAILED DESCRIPTION

[0020] 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.

[0021] See also Figure 1-2 The utility model provides a technical solution: a simple and efficient mixing station sewage treatment equipment, including a main body 1, a feed inlet 2 is arranged on the upper part of the main body 1, a first vibrating screen 3, a second vibrating screen 4, a sewage filter 10 and a negative pressure generating device 9 are arranged in order from top to bottom inside the main body 1, a first motor 11 connected to the first vibrating screen 3 and a second motor 12 connected to the second vibrating screen 4 are arranged on the outside of the main body 1, and a crushed stone outlet 5 connected to the bottom of the first vibrating screen 3, a sand outlet 6 connected to the bottom of the second vibrating screen 4, a sludge outlet 7 connected to the bottom of the sewage filter 10 and a clean water outlet 8 connected to the bottom of the negative pressure generating device 9 are arranged on the outer side of the main body 1. Among them, the mesh size of the first vibrating screen 3 is slightly larger than the diameter of the sand, and the mesh size of the second vibrating screen 4 is slightly smaller than the diameter of the sand.

[0022] The sewage generated by the mixing station during the production, transportation, and cleaning of the equipment is poured into the feed port 2. Since the mesh size of the first vibrating screen 3 is slightly larger than the diameter of the sand, the gravel is first isolated separately through the first vibrating screen 3, and is collected and recycled through the gravel outlet 5. The sewage containing sand falls into the second vibrating screen 4; then, since the mesh size of the second vibrating screen 4 is slightly smaller than the diameter of the sand, the sand in the sewage is isolated separately again, and is collected and recycled through the sand outlet 6; the remaining sewage contains only tiny particles such as cement and other additives. These sewage are then filtered by the sewage filter 10, and the tiny particles become sludge, which is discharged through the sludge outlet 7. The filtered clean water enters the negative pressure generating device 9, flows out through the clean water outlet 8 at the bottom, and is also collected and recycled. The negative pressure generating device 9 can generate negative pressure, further improving the filtering and purification efficiency of the sewage filter 10.

[0023] For further information, see Figure 3 The sewage filtering device 10 includes a metal support net 101, a filter cloth 102, a scraper 103, a first electric telescopic push rod 104 and an automatic sealing mechanism 105; wherein the metal support net 101 is fixed to the inner wall of the main body 1 on all sides, the filter cloth 102 is fixed to the upper surface of the metal support net 101 through a rubber strip, the scraper 103 is arranged above the filter cloth 102 and is slidably connected to the inner wall of the main body 1 on both sides, the scraper 103 is fixed to the front end of the first electric telescopic push rod 104, the other end of the first electric telescopic push rod 104 is fixed to the outer wall of the main body 1, and the automatic sealing mechanism 105 is embedded in the main body 1 near the front end of the first telescopic rod 104.

[0024] See also Figure 4The automatic sealing mechanism 105 includes a sealing plate 1051, a position sensor 1052, a limiting groove 1503, a fixing plate 1054, a driving motor 1055, a pull rope 1056 and a compression spring 1057; wherein the sealing plate 1051 is embedded in the main body 1 which is flush with the filter cloth 102 in height, the position sensor 1052 is embedded in the inner wall of the main body 1 above the sealing plate 1051, the limiting groove 1053 is located in the main body 1 corresponding to the two sides of the sealing plate 1051, and plays a role in limiting the descending position of the sealing plate 1052, the fixing plate 1054 is fixedly embedded in the main body 1 below the sealing plate 1051, the outside of the driving motor 1055 is fixed to the outer wall of the main body 1, the output end of the driving motor 1055 is located in the main body 1 above the fixing plate 1054, the two ends of the pull rope 1056 are respectively fixedly connected with the output end of the driving motor 1055 and the lower end of the sealing plate 1051, and the two ends of the compression spring 1057 are respectively fixed on the sealing plate 1051 and the fixing plate 1054.

[0025] When the sewage filtering device 10 filters sewage, at the beginning, when there is less sludge on the filter cloth 102, less sludge can enhance the sewage filtering and purification effect. However, when more sludge is generated on the filter cloth 102, it will inevitably affect the filtering effect. The first electric telescopic push rod 104 starts to work, pushing the scraper plate 103 from one end of the filter cloth 102 to the other end. When the scraper plate 103 moves close to the sealing plate 1051, the position sensor 1052 will feed back to the drive motor 1055, and the drive motor 1055 starts, and the sealing plate 1051 is pulled down by the pull rope 1056 to open the sludge outlet 7, so that the sludge can be discharged smoothly from the sludge outlet 7. At the same time, the compression spring 1057 is compressed, and the drive motor 1055 stops working. Since the length of the limiting groove 1053 is equal to twice the height of the sealing plate 1052, when the driving motor 1055 stops working, the sealing plate 1051 rises back to the original position under the elastic force of the compression spring 1057, and seals the sludge outlet 7 to prevent the sewage from overflowing from the sludge outlet 7 during filtration. Such a technical solution realizes the technical effect that the sewage filtering device 10 automatically removes sludge, which is beneficial to the filtration and purification of sewage.

[0026] See also Figure 5Further, the negative pressure generating device 9 includes a partition 91, a second electric telescopic rod 92 and a one-way valve 93. The partition 91 is fixed at the front end of the second electric telescopic rod 92. Both sides of the partition 91 are sealed with the inner wall of the main body 1 and are slidably connected with the inner wall of the main body 1. The other end of the second electric telescopic rod 92 is fixed to the outer wall of the main body 1. The one-way valve 93 is arranged in the clean water outlet 8. When filtering sewage, the second electric telescopic rod 92 works to push the partition 91 to move on the inner wall of the main body 1 to generate negative pressure, which is more conducive to the filtration and purification of sewage by the sewage filtering device 10. The negative pressure generating principle of the negative pressure generating device 9 is as follows: if the partition 91 moves to the right, the partition 91 will push the clean water on the right side of the partition 91 to be discharged through the right clean water outlet 8. At the same time, since a one-way valve 93 is provided in the left clean water outlet 8, the one-way valve 93 can only allow the clean water at the bottom of the negative pressure generating device 9 to flow out, and cannot allow outside air to enter. Therefore, negative pressure is formed on the left side of the partition 91; similarly, if the partition 91 moves to the left, the clean water on the left side of the partition 91 is discharged through the left clean water outlet 8. At the same time, since a one-way valve 93 is provided in the right clean water outlet 8, negative pressure is formed on the right side of the partition 91.

[0027] For further information, see Figure 1 A water pressure sensor 13 is arranged at the bottom of the main body 1. When there is too much sludge on the filter cloth 102, the partition 91 moves one way, the amount of clean water filtered out from the bottom of the main body 1 will decrease, and the water pressure will decrease. When the water pressure sensor 13 senses that this change is lower than the set value, it will be fed back to the first electric telescopic push rod 104, so that it starts working and pushes the scraper 103 to scrape off the sludge above the filter cloth 102. When the amount of clean water filtered out from the bottom of the main body 1 returns to the normal value, the water pressure sensor 13 will be fed back to the first electric telescopic push rod 104 to stop working. Such a scheme realizes the technical effect of automatically starting the scraper 103 to scrape off the sludge, and can ensure that the scraper 103 will start to work automatically only when there is more sludge on the surface of the filter cloth 102, reducing the working time of the scraper 103, not only increasing the service life of the filter cloth 102, but also more conducive to the filtration and purification of sewage. Of course, when the filter cloth 102 is used to a certain extent, it needs to be replaced. Since the filter cloth 102 is fixed to the metal support net 101 with a rubber strip, it is also very convenient to replace.

[0028] The working process of the scheme described in the utility model is as follows: the sewage from the mixing station is poured into the feed port 2 at the upper end of the main body 1, and then the equipment is started, and the first vibrating screen 3 and the second vibrating screen 4 respectively separate the gravel and sand in the sewage separately, so as to facilitate collection, recycling and reuse; then the sewage with fine particles enters the sewage filtering device 10, and after being filtered by the filter cloth 102, the sludge on the filter cloth 102 is scraped off by the scraper plate 103 and discharged through the sludge discharge port 7, and the filtered clean water enters the negative pressure generating device 9 and is discharged through the clean water discharge port 8.

[0029] In this solution, the first vibrating screen 3 and the second vibrating screen 4 can separate the gravel and sand separately, which is convenient for collection and recycling; the automatic sealing mechanism 105 and the set position sensor 1052 can sense the position of the scraper 103 through the position sensor 1052 to control the opening and closing of the automatic sealing mechanism 105, so as to achieve the technical effect of automatically removing sludge; in the negative pressure generating device 9, the negative pressure is generated by the back and forth movement of the partition 91, which is more conducive to the filtration and purification of sewage; a water pressure sensor 13 is set at the bottom of the main body 1. When there is too much sludge on the filter cloth 102, the amount of clean water filtered out from the bottom of the main body 1 will decrease, and the water pressure will decrease. When the water pressure is lower than the set value, the water pressure sensor 13 will feed back to the first electric telescopic push rod 104, automatically start the working state, push the scraper 103 to scrape off the sludge, until the amount of clean water filtered out reaches the set standard, the water pressure sensor 13 will feed back to the first electric telescopic push rod 104, and stop working.

[0030] In summary, the above technical solution provides a simple and efficient sewage treatment device with a simple structure, occupies little ground space, has low purchase and operation costs, and has good filtering effects, and is very suitable for promotion in small and medium-sized mixing stations.

[0031] It should be noted that the automated controls involved in the present invention, such as the control of the operation and stop of the drive motor 1055 by the position sensor 1052, the control of the operation and stop of the first electric telescopic push rod 104 by the water pressure sensor 13, the operation of the first electric telescopic push rod 104 and the second electric telescopic rod 92, etc., are all existing mature technologies, and their principles, etc., will not be elaborated here.

Claims

1. A simple and efficient mixing station sewage treatment equipment, characterized by: The invention comprises a main body (1), wherein a feed inlet (2) is arranged at the upper part of the main body (1), a first vibrating screen (3), a second vibrating screen (4), a sewage filter device (10) and a negative pressure generating device (9) are arranged in order from top to bottom inside the main body (1), a first motor (11) which is transmission-connected to the first vibrating screen (3) and a second motor (12) which is transmission-connected to the second vibrating screen (4) are arranged outside the main body (1), and a crushed stone outlet (5) which is connected to the bottom of the first vibrating screen (3), a sand outlet (6) which is connected to the bottom of the second vibrating screen (4), a sludge outlet (7) which is connected to the bottom of the sewage filter device (10) and a clean water outlet (8) which is connected to the bottom of the negative pressure generating device (9) are arranged on the outer side of the main body (1).

2. According to claim 1, a simple and efficient mixing station sewage treatment equipment is characterized by: The mesh size of the first vibrating screen (3) is slightly larger than the diameter of the sand; the mesh size of the second vibrating screen (4) is slightly smaller than the diameter of the sand.

3. A simple and efficient mixing station sewage treatment equipment according to claim 1, characterized in that: The sewage filtering device (10) comprises a metal support net (101), a filter cloth (102), a scraper (103), a first electric telescopic push rod (104) and an automatic sealing mechanism (105); wherein the metal support net (101) is fixed to the inner wall of a main body (1) on all sides, the filter cloth (102) is fixed to the upper surface of the metal support net (101) via a rubber strip, the scraper (103) is arranged above the filter cloth (102) and is slidably connected to the inner wall of the main body (1) on both sides, the scraper (103) is fixed to the front end of the first electric telescopic push rod (104), the other end of the first electric telescopic push rod (104) is fixed to the outer wall of the main body (1), and the automatic sealing mechanism (105) is embedded in the main body (1) near the front end of the first electric telescopic push rod (104).

4. A simple and efficient mixing station sewage treatment equipment according to claim 3, characterized in that: The automatic sealing mechanism (105) comprises a sealing plate (1051), a position sensor (1052), a limiting groove (1053), a fixing plate (1054), a driving motor (1055), a pull rope (1056) and a compression spring (1057); wherein the sealing plate (1051) is embedded in a main body (1) at a height level with the filter cloth (102); the position sensor (1052) is embedded in an inner wall of the main body (1) above the sealing plate (1051); and the limiting groove (1053) is located at the sides corresponding to the sides of the sealing plate (1051). In the main body (1), the fixing plate (1054) is fixedly embedded in the main body (1) below the sealing plate (1051), the outside of the driving motor (1055) is fixed to the outer wall of the main body (1), the output end of the driving motor (1055) is located in the main body (1) above the fixing plate (1054), the two ends of the pull rope (1056) are respectively fixedly connected to the output end of the driving motor (1055) and the lower end of the sealing plate (1051), and the two ends of the compression spring (1057) are respectively fixed to the sealing plate (1051) and the fixing plate (1054).

5. A simple and efficient mixing station sewage treatment equipment according to claim 4, characterized in that: The length of the limiting groove (1053) is equal to twice the height of the sealing plate (1051).

6. A simple and efficient mixing station sewage treatment equipment according to claim 1, characterized in that: The negative pressure generating device (9) comprises a partition (91), a second electric telescopic rod (92) and a one-way valve (93); the partition (91) is fixed to the front end of the second electric telescopic rod (92); both sides of the partition (91) are sealed with the inner wall of the main body (1) and are slidably connected with the inner wall of the main body (1); the other end of the second electric telescopic rod (92) is fixed to the outer wall of the main body (1); and the one-way valve (93) is arranged in the clean water outlet (8).

7. The simple and efficient mixing station sewage treatment equipment according to claim 1 is characterized by: A water pressure sensor (13) is arranged at the bottom of the main body (1).

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