Three-stage sedimentation tank for concrete sewage

Abstract

The utility model relates to the technical field of concrete production, and discloses a three-stage sedimentation tank for concrete sewage, which comprises a first sedimentation tank, a second sedimentation tank and a third sedimentation tank which are sequentially arranged, a first water inlet is arranged between the first sedimentation tank and the second sedimentation tank, a second water inlet is arranged between the second sedimentation tank and the third sedimentation tank, and a third water inlet is arranged between the third sedimentation tank and the third sedimentation tank. A chemical feeding pipe is arranged on the second sedimentation tank, a water suction pump is arranged on the third sedimentation tank, a control valve is arranged at the top of the chemical feeding pipe, and a control mechanism used for controlling opening and closing of a bottom pipe opening of the chemical feeding pipe is arranged in the second sedimentation tank; the utility model provides a three-stage sedimentation tank for concrete sewage, which has the effect of improving the working efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete production, in particular to a three-stage sedimentation tank for concrete sewage. Background Art

[0002] A concrete mixing station is a combined device used for centralized mixing of concrete, also known as a concrete prefabrication plant. Due to its high degree of mechanization and automation, its productivity is also high, and it can ensure the quality of concrete and save cement. Concrete mixing stations are generally equipped with sewage sedimentation tanks to facilitate the sedimentation of domestic wastewater or excess sewage after cleaning concrete equipment for reuse.

[0003] After sedimentation, the existing sewage needs to be further treated by adding sewage treatment agents. However, since the sewage sedimentation tank is built underground, workers need to frequently observe the water level in the sedimentation tank to determine the time to add sewage treatment agents, resulting in low work efficiency. Utility Model Content

[0004] The utility model aims to provide a three-stage sedimentation tank for concrete sewage, which has the effect of improving work efficiency.

[0005] The above technical purpose of the utility model is achieved through the following technical scheme: it includes a first sedimentation tank, a second sedimentation tank and a third sedimentation tank which are arranged in sequence, a first water inlet is opened between the first sedimentation tank and the second sedimentation tank, a second water inlet is opened between the second sedimentation tank and the third sedimentation tank, a dosing pipe is arranged on the second sedimentation tank, a water pump is arranged on the third sedimentation tank, a control valve is arranged on the top of the dosing pipe, and a control mechanism for controlling the opening and closing of the bottom pipe mouth of the dosing pipe is arranged in the second sedimentation tank.

[0006] The utility model is further configured as follows: the control mechanism includes a fixed plate vertically arranged in the second sedimentation tank, a discharge port opened on the fixed plate and a movable plate movably fitted to the discharge port, the discharge port is connected to the bottom pipe port of the dosing pipe, first movable racks are symmetrically arranged on both sides of the movable plate, a rotating gear meshing with the first movable rack is rotatably arranged on the fixed plate, a second movable rack meshing with the other side of the rotating gear is vertically slidably arranged on the fixed plate, a floating block is arranged at the bottom end of the second movable rack, a limiting plate is horizontally arranged at the top of the fixed plate, and when the top end of the second movable rack contacts the limiting plate, there is a set distance between the bottom end of the discharge port and the top end of the movable plate.

[0007] The utility model is further configured as follows: a long strip-shaped movable groove is vertically opened on the fixed plate, and a side of the movable plate close to the fixed plate is engaged with the movable groove. When the movable plate abuts against the top of the movable groove, the movable plate movably fits the discharge port.

[0008] The utility model is further configured as follows: the floating block is in a conical shape that is narrow at the top and wide at the bottom.

[0009] The utility model is further configured as follows: a mud pumping pipe is provided at the bottom of the first sedimentation tank, and a mud pump is provided at one end of the mud pumping pipe.

[0010] The utility model is further configured as follows: the top of the first sedimentation tank is open, and a detachable filter screen is arranged on the top of the first sedimentation tank.

[0011] The utility model is further configured as follows: a first limit block is horizontally arranged on the inner wall of the first sedimentation tank, and a second limit block that can abut against the first limit block is arranged on the filter screen.

[0012] The utility model is further configured as follows: the filter screen is funnel-shaped.

[0013] The utility model is further configured as follows: a lifting handle is vertically arranged in the middle of the filter screen.

[0014] The utility model is further configured as follows: the bottom of the first sedimentation tank is funnel-shaped, and the bottom end of the first sedimentation tank is connected to the mud extraction pipe.

[0015] The beneficial effects of the utility model are:

[0016] 1. By setting a dosing pipe, a control mechanism and a control valve, when the liquid level in the second sedimentation tank is low, the control mechanism controls the bottom end of the dosing pipe to be in a closed state, and the worker can open the control valve to add the sewage treatment agent into the dosing pipe in advance. After that, when the liquid level in the second sedimentation tank rises to a certain height, the control mechanism controls the bottom end of the dosing pipe to open, and the sewage treatment agent in the dosing pipe is added to the second sedimentation tank to further treat the sewage in the second sedimentation tank. After that, when the water level in the second sedimentation tank further rises, the water enters the third sedimentation tank through the second water inlet; therefore, the opening and closing of the bottom end of the dosing pipe can be automatically controlled by the control mechanism to realize automatic addition of the sewage treatment agent, and the worker does not need to frequently observe the changes in the liquid level in the second sedimentation tank before adding the sewage treatment agent, thereby achieving the purpose of improving work efficiency.

[0017] 2. By setting a fixed plate, a movable plate and a first movable rack, when the liquid level in the second sedimentation tank is low, the movable plate fits with the discharge port, so that the bottom end of the dosing pipe is in a closed state, and then the rising liquid level in the second sedimentation tank is locked, and the floating block drives the second movable rack to rise, so that the rotating gear rotates, drives the movable plate to move downward, so that the discharge port is opened, and the sewage treatment agent in the dosing pipe enters the second sedimentation tank to further treat the sewage. Then, as the water level continues to rise, the water in the second sedimentation tank enters the third sedimentation tank from the second water inlet; the floating ball moves with the water level to realize the lifting and lowering of the movable plate, and then the opening and closing of the discharge port are realized, so that the sewage treatment agent in the dosing pipe can be automatically dosed, thereby achieving the purpose of improving work efficiency.

[0018] 3. By setting the filter net, the first limit block, etc., after the sewage enters the first sedimentation tank, it is first filtered by the filter net to remove larger particle impurities in the sewage, so as to prevent the large particle impurities from settling at the bottom of the first sedimentation tank, which is inconvenient for suction treatment. At the same time, the filter net is limited by the first limit block and the second limit block, and the filter net can also be directly taken out to process impurities. The structure is simple and practical.

[0019] 4. Through the sludge suction pipe and sludge pump, the sludge settled in the first sedimentation tank can be sucked out in time to avoid excessive sludge accumulation and affect the subsequent sewage treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 This is a structural schematic diagram of an embodiment of a three-stage sedimentation tank for concrete sewage of the utility model;

[0022] Figure 2 It is a partial cross-sectional structural schematic diagram of an embodiment of a three-stage sedimentation tank for concrete sewage of the utility model;

[0023] Figure 3 yes Figure 2 A is an enlarged schematic diagram.

[0024] In the figure, 1, the first sedimentation tank; 2, the second sedimentation tank; 3, the third sedimentation tank; 4, the first water inlet; 5, the second water inlet; 6, the dosing pipe; 7, the water pump; 8, the control valve; 9, the control mechanism; 9a, the fixed plate; 9b, the discharge port; 9c, the movable plate; 10, the first movable rack; 11, the rotating gear; 12, the second movable rack; 13, the floating block; 14, the limit plate; 15, the movable groove; 16, the mud extraction pipe; 17, the mud extraction pump; 18, the filter screen; 19, the first limit block; 20, the second limit block; 21, the lifting handle. DETAILED DESCRIPTION

[0025] The technical solution of the utility model will be described clearly and completely below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of 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.

[0026] The utility model provides a three-stage sedimentation tank for concrete sewage, such as Figures 1 to 3 As shown, it includes a first sedimentation tank 1, a second sedimentation tank 2 and a third sedimentation tank 3 which are arranged in sequence, a first water inlet 4 is opened between the first sedimentation tank 1 and the second sedimentation tank 2, a second water inlet 5 is opened between the second sedimentation tank 2 and the third sedimentation tank 3, a dosing pipe 6 is arranged on the second sedimentation tank 2, a water pump 7 is arranged on the third sedimentation tank 3, a control valve 8 is arranged on the top of the dosing pipe 6, and a control mechanism 9 for controlling the opening and closing of the bottom pipe opening of the dosing pipe 6 is arranged in the second sedimentation tank 2.

[0027] Furthermore, the control mechanism 9 includes a fixed plate 9a vertically arranged in the second sedimentation tank 2, a discharge port 9b opened on the fixed plate 9a, and a movable plate 9c movably fitted to the discharge port 9b, the discharge port 9b is connected to the bottom pipe port of the dosing pipe 6, and the first movable racks 10 are symmetrically arranged on both sides of the movable plate 9c, a rotating gear 11 meshing with the first movable rack 10 is rotatably arranged on the fixed plate 9a, a second movable rack 12 meshing with the other side of the rotating gear 11 is vertically slidably arranged on the fixed plate 9a, a floating block 13 is arranged at the bottom end of the second movable rack 12, and a limiting plate 14 is horizontally arranged at the top of the fixed plate 9a. When the top end of the second movable rack 12 contacts the limiting plate 14, there is a set distance between the bottom end of the discharge port 9b and the top end of the movable plate 9c.

[0028] Furthermore, a long strip of movable groove 15 is vertically opened on the fixed plate 9a, and the movable plate 9c is engaged with the movable groove 15 on one side close to the fixed plate 9a. When the movable plate 9c contacts the top of the movable groove 15, the movable plate 9c is movably fitted to the discharge port 9b.

[0029] Furthermore, the floating block 13 is in a conical shape that is narrow at the top and wide at the bottom.

[0030] Furthermore, a mud pumping pipe 16 is provided at the bottom of the first sedimentation tank 1 , and a mud pump 17 is provided at one end of the mud pumping pipe 16 .

[0031] Furthermore, the top of the first sedimentation tank 1 is open, and a detachable filter screen 18 is provided on the top of the first sedimentation tank 1 .

[0032] Furthermore, a first limit block 19 is horizontally disposed on the inner wall of the first sedimentation tank 1 , and a second limit block 20 that can abut against the first limit block 19 is disposed on the filter screen 18 .

[0033] Furthermore, the filter screen 18 is funnel-shaped.

[0034] Furthermore, a lifting handle 21 is vertically provided in the middle of the filter screen 18 .

[0035] Furthermore, the bottom of the first sedimentation tank 1 is funnel-shaped, and the bottom end of the first sedimentation tank 1 is connected to the mud extraction pipe 16 .

[0036] The sewage first flows into the first sedimentation tank 1. The filter screen 18 in the first sedimentation tank 1 performs preliminary filtration on the sewage, so that larger particulate impurities remain on the filter screen 18. The sewage after preliminary filtration is precipitated in the first sedimentation tank 1, and the sludge is precipitated at the bottom. Then, when the water level rises to a certain height, the water at the top of the first sedimentation tank 1 enters the second sedimentation tank 2. When the liquid level in the second sedimentation tank 2 is lower, the movable plate 9c fits with the discharge port 9b, so that the bottom end of the dosing pipe 6 is in a closed state, and then the rise of the liquid level in the second sedimentation tank 2 is locked. The floating block 13 drives the second movable rack 12 to rise, so that the rotating gear 11 rotates, driving the movable plate 9c to move downward. The discharge port 9b is opened, and the sewage treatment agent in the dosing pipe 6 enters the second sedimentation tank 2 (the worker opens the control valve 8 in advance and adds the sewage treatment agent into the dosing pipe 6), and the sewage is further treated. Then, as the water level continues to rise, the second rack abuts against the limit plate 14, and the float 13 cannot continue to rise. The water in the second sedimentation tank 2 enters the third sedimentation tank 3 from the second water inlet 5. Then, the water pump 7 can be turned on to reuse the water in the third sedimentation tank 3. The floating ball moves with the water level to realize the lifting and lowering of the movable plate 9c, and then the discharge port 9b is opened and closed, so that the sewage treatment agent in the dosing pipe 6 can be automatically dosed, thereby achieving the purpose of improving work efficiency.

[0037] By setting the filter screen 18, the first limit block 19, etc., after the sewage enters the first sedimentation tank 1, it is first filtered by the filter screen 18 to remove larger granular impurities in the sewage, so as to prevent the large granular impurities from being precipitated at the bottom of the first sedimentation tank 1, which is inconvenient for suction treatment. At the same time, the filter screen 18 is limited by the first limit block 19 and the second limit block 20, and the filter screen 18 can also be directly taken out to treat impurities. The structure is simple and practical; by setting the filter screen 18 to a funnel shape, the impurities are enriched in the middle of the filter screen 18, which is convenient for the subsequent removal of the filter screen 18 to treat impurities.

[0038] The sludge precipitated in the first sedimentation tank 1 can be promptly sucked out by the sludge suction pipe 16 and the sludge suction pump 17 to avoid excessive sludge accumulation and affect the subsequent sewage treatment.

[0039] By setting the bottom of the first sedimentation tank 1 to be funnel-shaped, it is beneficial for the precipitated sludge to be enriched in the middle of the sedimentation tank, making it easier for the sludge extraction pipe 16 to extract the sludge.

[0040] By setting the buoy 13 to be a conical shape that is narrow at the top and wide at the bottom, the area of ​​the bottom of the buoy 13 is increased, so that the buoy 13 can be raised and lowered more stably on the water surface.

[0041] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0042] The above description is only a description of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Any changes or modifications made by a person skilled in the art in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A three-stage sedimentation tank for concrete sewage, characterized in that: The invention comprises a first sedimentation tank (1), a second sedimentation tank (2) and a third sedimentation tank (3) which are arranged in sequence, a first water inlet (4) is provided between the first sedimentation tank (1) and the second sedimentation tank (2), a second water inlet (5) is provided between the second sedimentation tank (2) and the third sedimentation tank (3), a dosing pipe (6) is provided on the second sedimentation tank (2), a water pump (7) is provided on the third sedimentation tank (3), a control valve (8) is provided on the top of the dosing pipe (6), and a control mechanism (9) for controlling the opening and closing of the bottom pipe opening of the dosing pipe (6) is provided in the second sedimentation tank (2).

2. A three-stage sedimentation tank for concrete sewage according to claim 1, characterized in that: The control mechanism (9) comprises a fixed plate (9a) vertically arranged in the second sedimentation tank (2), a feed opening (9b) opened on the fixed plate (9a), and a movable plate (9c) movably fitted to the feed opening (9b), wherein the feed opening (9b) is connected to the bottom pipe opening of the dosing pipe (6), first movable racks (10) are symmetrically arranged on both sides of the movable plate (9c), and a rotating gear (10) meshing with the first movable rack (10) is rotatably arranged on the fixed plate (9a). A second movable rack (12) meshing with the other side of the rotating gear (11) is vertically slidably arranged on the fixed plate (9a), a floating block (13) is arranged at the bottom end of the second movable rack (12), and a limiting plate (14) is horizontally arranged at the top end of the fixed plate (9a). When the top end of the second movable rack (12) abuts against the limiting plate (14), a set distance is provided between the bottom end of the discharge port (9b) and the top end of the movable plate (9c).

3. A three-stage sedimentation tank for concrete sewage according to claim 2, characterized in that: The fixed plate (9a) is vertically provided with a long strip-shaped movable groove (15), and the movable plate (9c) is engaged with the movable groove (15) on one side close to the fixed plate (9a). When the movable plate (9c) contacts the top of the movable groove (15), the movable plate (9c) is movably fitted to the discharge port (9b).

4. A three-stage sedimentation tank for concrete sewage according to claim 3, characterized in that: The floating block (13) is in the shape of a cone which is narrow at the top and wide at the bottom.

5. The three-stage sedimentation tank for concrete sewage according to claim 1 is characterized in that: The bottom of the first sedimentation tank (1) is connected to a mud extraction pipe (16), and one end of the mud extraction pipe (16) is provided with a mud extraction pump (17).

6. A three-stage sedimentation tank for concrete sewage according to claim 5, characterized in that: The top of the first sedimentation tank (1) is open, and a detachable filter screen (18) is provided on the top of the first sedimentation tank (1).

7. A three-stage sedimentation tank for concrete sewage according to claim 6, characterized in that: A first limit block (19) is horizontally arranged on the inner wall of the first sedimentation tank (1), and a second limit block (20) capable of abutting against the first limit block (19) is arranged on the filter screen (18).

8. A three-stage sedimentation tank for concrete sewage according to claim 7, characterized in that: The filter screen (18) is funnel-shaped.

9. A three-stage sedimentation tank for concrete sewage according to claim 8, characterized in that: A lifting handle (21) is vertically arranged in the middle of the filter screen (18).

10. A three-stage sedimentation tank for concrete sewage according to claim 9, characterized in that: The bottom of the first sedimentation tank (1) is funnel-shaped, and the bottom end of the first sedimentation tank (1) is connected to the mud extraction pipe (16).

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