Automatic metering and dosing device for sewage treatment

Abstract

The utility model relates to the technical field of sewage treatment, in particular to an automatic metering and dosing device for sewage treatment, which comprises a base frame and a liquid medicine barrel arranged on the base frame, the solid medicine hopper is arranged on the liquid medicine barrel, the solid medicine hopper is divided into an upper part and a lower part, the upper part of the solid medicine hopper is funnel-shaped, the lower part of the solid medicine hopper is circular tube-shaped, and the lower part of the solid medicine hopper extends into the liquid medicine barrel. According to the utility model, the electric push rod is matched with the U-shaped rod and the round sheet I and the round sheet II at the end part of the U-shaped rod, so that the feeding amount of a solid medicament can be accurately controlled, the accurate metering of the chemical medicament in the sewage treatment process is ensured, and the excessive or insufficient metering is avoided, thereby improving the treatment efficiency and reducing the operation cost; the solid medicament directly falls into the liquid in the liquid medicine barrel, and the servo motor drives the uniform mixing frame arranged in the liquid medicine barrel to rotate, so that the liquid in the liquid medicine barrel can be effectively stirred, and the medicament is ensured to be fully dissolved in water.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to an automatic metering and dosing device for sewage treatment. Background Art

[0002] Wastewater treatment refers to the process of removing pollutants from sewage through a series of physical, chemical and biological treatment methods to make it reach the standard for discharge or reuse. This process usually includes primary treatment (screening and sedimentation), secondary treatment (biological treatment, such as activated sludge process and biofilm process), tertiary treatment (deep treatment, such as filtration, disinfection and nutrient removal) and sludge treatment (concentration, dehydration, digestion and disposal). The treated water can be safely discharged into natural water bodies or used for non-drinking purposes such as irrigation and industrial water. The goal of sewage treatment is to protect the environment, avoid water pollution, and recycle resources and energy.

[0003] During the sedimentation process of sewage treatment, flocculants need to be added to accelerate the sedimentation process. Since most flocculants are fixed particles, they need to be mixed with a certain amount of water to prepare a solution. The solution is then put into the sewage for use. Chinese utility model patent CN221191637U discloses an automatic metering dosing device for sewage treatment, including a metering dosing body, a flow meter is fixedly connected to one side of the metering dosing body, a water inlet pipe is fixedly connected to the side of the metering dosing body, and the water inlet pipe is fixedly connected to the side of the metering dosing body. A first metering pump is installed on the tube, and a stirring assembly is fixedly connected to one side of the upper surface of the metering and dosing body; the device is provided with a solid feed pipe, and the solid medicine is metered by the metering screw pump and fed into the solid feed pipe, and at the same time, the breaking motor on the solid feed pipe drives the breaking shaft to rotate to break up the solid medicine; however, the device still has certain shortcomings when in use. After the device completes the breaking up of the solid medicine, the medicine will directly fall onto the surface of the clean water. During subsequent stirring, the medicine may adhere to the top of the device and is difficult to be fully mixed with the clean water. Utility Model Content

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the utility model provides an automatic metering and dosing device for sewage treatment.

[0005] The technical implementation scheme of the utility model is as follows: an automatic metering and dosing device for sewage treatment, comprising a base frame and a medicine liquid barrel arranged on the base frame; further comprising a solid medicine hopper arranged on the medicine liquid barrel, the solid medicine hopper being divided into an upper and a lower part, the upper part of which is arranged in a funnel shape, and the lower part is arranged in a circular tube shape, and the lower part of the solid medicine hopper extends into the interior of the medicine liquid barrel; further comprising an electric push rod arranged on the base frame, the movable end of the electric push rod being fixedly connected to one end of a U-shaped rod, the other end of the U-shaped rod extending into the solid medicine hopper, and a disc I is arranged on the end of the U-shaped rod extending into the solid medicine hopper, the disc I is matched with the circular tubular part of the solid medicine hopper, and a disc II adapted to the disc I is also arranged on the part of the U-shaped rod extending into the solid medicine hopper.

[0006] More preferably, the bottom of the medicine liquid barrel is configured to be conical.

[0007] More preferably, the top and bottom of the medicine liquid barrel are both connected with connecting pipes.

[0008] More preferably, an electric flow meter and a solenoid valve are installed on both of the two connecting pipes, and the electric flow meter and the solenoid valve on the same connecting pipe are directly electrically connected.

[0009] More preferably, a mixing rack is rotatably arranged in the medicine liquid barrel.

[0010] More preferably, a servo motor is installed on the top of the medicine liquid barrel, and the output shaft of the servo motor is fixedly connected to the top end of the rotating shaft of the mixing rack.

[0011] More preferably, a spray pipe is fixedly connected to the top of the medicine liquid barrel via a fixing rod.

[0012] More preferably, a flow guide pipe is provided between the spray pipe and the connecting pipe at the top of the medicine liquid barrel.

[0013] More preferably, the nozzle is arranged in a circular ring shape, and nozzles are provided at equal intervals on the nozzle.

[0014] Compared with the prior art, the utility model has the following advantages: the utility model can accurately control the amount of solid medicine added through the electric push rod in conjunction with the U-shaped rod and the discs I and II at its ends, ensure the accurate metering of chemical agents in the sewage treatment process, avoid overdosage or underdosage, thereby improving treatment efficiency and reducing operating costs, and the lower part of the solid medicine hopper extends into the interior of the medicine liquid barrel, the solid medicine directly falls into the liquid in the medicine liquid barrel, and the mixing rack arranged in the medicine liquid barrel is driven to rotate by the servo motor, which can effectively stir the liquid in the medicine liquid barrel, ensure that the medicine is fully dissolved in the water, and make the subsequent treatment effect better; the setting of the electric flow meter and the solenoid valve realizes automatic metering and control of the medicine liquid, reducing manual intervention; the circular nozzle design and the equally spaced nozzles can flush the inner wall of the medicine liquid barrel when the water flow is sprayed out, ensuring that the solid medicine attached to the inner wall is fully dissolved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0016] Figure 2 It is a schematic diagram of the internal structure of the utility model.

[0017] Figure 3 It is a schematic structural diagram of the U-shaped rod, disc I and disc II of the utility model.

[0018] Figure 4 It is a structural schematic diagram of the connecting pipe, electric flow meter and solenoid valve of the utility model.

[0019] Figure 5 It is a structural schematic diagram of the servo motor and the mixing rack of the utility model.

[0020] Figure 6 It is a partial structural schematic diagram of the utility model.

[0021] Figure 7 The utility model is a schematic structural diagram of the nozzle, the guide tube and the fixing rod.

[0022] The meanings of the reference numerals in the figure are as follows: 1. base frame, 2. medicine liquid barrel, 3. solid medicine hopper, 4. electric push rod, 5. U-shaped rod, 51. disc I, 52. disc II, 6. connecting pipe, 61. electric flow meter, 62. solenoid valve, 7. servo motor, 71. mixing rack, 8. nozzle, 81. guide pipe, 82. fixing rod. DETAILED DESCRIPTION

[0023] 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.

[0024] See also Figure 1-Figure 3 The utility model provides an automatic metering and dosing device for sewage treatment, comprising a base frame 1 and a liquid medicine barrel 2 arranged on the base frame 1. The bottom of the liquid medicine barrel 2 is set in a conical shape. After the flocculant is dissolved, the solution can be better discharged from the conical part of the bottom of the liquid medicine barrel 2; see Figure 2 A solid medicine hopper 3 is arranged on the upper part of the medicine liquid barrel 2. The solid medicine hopper 3 is divided into an upper and lower part. The upper part is arranged in a funnel shape, and the flocculant is placed in the funnel-shaped part. The lower part of the solid medicine hopper 3 is arranged in a circular tube shape, and the circular tube-shaped part extends into the interior of the medicine liquid barrel 2. After sufficient clean water is injected into the medicine liquid barrel 2, the bottom end of the circular tube-shaped part of the solid medicine hopper 3 will extend below the clean water level; an electric push rod 4 is also installed at the front part of the base frame 1, and a U-shaped rod 5 is fixedly arranged at the movable end of the electric push rod 4, see Figure 3 The U-shaped rod 5 is provided with a disc Ⅰ51 and a disc Ⅱ52, the disc Ⅰ51 and the disc Ⅱ52 are of the same size, and both fit the tubular part of the solid medicine hopper 3, the U-shaped rod 5 extends into the inner tubular part of the solid medicine hopper 3, and the disc Ⅰ51 and the disc Ⅱ52 can slide in accordance with the inner wall of the tubular part of the solid medicine hopper 3.

[0025] In the embodiment of the utility model, the flocculant is poured into the solid medicine hopper 3. Initially, the disc II 52 is located at the separation between the upper and lower parts of the solid medicine hopper 3 and prevents the flocculant from falling downward. When enough clean water is injected into the medicine barrel 2, the electric push rod 4 is used to push the U-shaped rod 5 to slide up until the disc I 51 rises to the separation between the upper and lower parts of the solid medicine hopper 3. Then, the electric push rod 4 is used to push the U-shaped rod 5 to reset. During the descent of the U-shaped rod 5, the flocculant will fall onto the disc I 51 until the disc II 52 returns to the separation between the upper and lower parts of the solid medicine hopper 3 again. At this time, the flocculant will be filled between the disc I 51 and the disc II 52. Subsequently, the U-shaped rod 5 is continued to be pushed down until the disc II 52 is located at the lower end of the circular tubular part of the solid medicine hopper 3. The flocculant then falls directly into the clean water, thereby realizing the quantitative use of the flocculant. The flocculant falls directly into the middle of the clean water and is easier to dissolve. After the solution is discharged, the U-shaped rod 5 can be raised again.

[0026] See also Figure 2 and Figure 4In the embodiment of the utility model, the top and bottom of the medicine liquid barrel 2 are connected with a connecting pipe 6, and the two connecting pipes 6 are installed with an electric flow meter 61 and an electromagnetic valve 62, and the electric flow meter 61 on the same connecting pipe 6 is directly electrically connected to the electromagnetic valve 62, and clean water is injected through the connecting pipe 6 at the top of the medicine liquid barrel 2, and the electric flow meter 61 will record the amount of clean water injected into the medicine liquid barrel 2. After reaching a predetermined value, the electric flow meter 61 will trigger the electromagnetic valve 62 to block the connecting pipe 6 at the top of the medicine liquid barrel 2; after the solution is mixed, it is discharged into the sewage pool through the connecting pipe 6 at the bottom of the medicine liquid barrel 2, and the electric flow meter 61 on the bottom connecting pipe 6 can record the amount of flocculant solution discharged into the sewage pool, which can better control the dosage, thereby improving the sewage treatment effect.

[0027] See also Figure 2 and Figure 5 In the embodiment of the utility model, a mixing rack 71 is rotatably arranged in the medicine liquid barrel 2, a servo motor 7 is installed on the top of the medicine liquid barrel 2, and the output shaft of the servo motor 7 is fixedly connected to the top of the rotating shaft of the mixing rack 71. After the flocculant is fed into the clean water, the servo motor 7 can be started to drive the mixing rack 71 to rotate to stir the water flow so that the flocculant is fully dissolved.

[0028] See also Figure 6 and Figure 7 In the embodiment of the utility model, four fixing rods 82 are symmetrically arranged on the top of the medicine liquid barrel 2, and a nozzle 8 arranged in a circular shape is connected between the four fixing rods 82, and nozzles are opened on the nozzle 8 at equal intervals. A guide pipe 81 is arranged between the nozzle 8 and the connecting pipe 6 on the top of the medicine liquid barrel 2. Before the clean water enters the medicine liquid barrel 2 through the connecting pipe 6, it will first flow into the nozzle 8 and spray outward through the nozzle on the nozzle 8, thereby flushing the inner wall of the medicine liquid barrel 2, preventing the flocculant from adhering to the inner wall of the medicine liquid barrel 2, and further ensuring that the flocculant can be fully dissolved in the clean water.

[0029] Although the present disclosure has been shown and described with reference to specific exemplary embodiments of the present disclosure, it should be understood by those skilled in the art that various changes in form and details may be made to the present disclosure without departing from the spirit and scope of the present disclosure as defined by the appended claims and their equivalents. Therefore, the scope of the present disclosure should not be limited to the above-mentioned embodiments, but should be determined not only by the appended claims, but also by the equivalents of the appended claims.

Claims

1. An automatic metering and dosing device for sewage treatment, comprising a base frame (1) and a liquid medicine barrel (2) arranged on the base frame (1); Its characteristics are: It also includes a solid medicine hopper (3) arranged on the medicine liquid barrel (2), the solid medicine hopper (3) is divided into an upper and a lower part, the upper part of which is arranged in a funnel shape and the lower part is arranged in a circular tube shape, and the lower part of the solid medicine hopper (3) extends into the interior of the medicine liquid barrel (2); It also includes an electric push rod (4) arranged on the base frame (1), the movable end of the electric push rod (4) is fixedly connected to one end of a U-shaped rod (5), the other end of the U-shaped rod (5) extends into the solid medicine hopper (3), and a disc I (51) is provided on the end of the U-shaped rod (5) extending into the solid medicine hopper (3), the disc I (51) fits with the circular tubular part of the solid medicine hopper (3), and a disc II (52) adapted to the disc I (51) is also provided on the part of the U-shaped rod (5) extending into the solid medicine hopper (3).

2. The automatic metering and dosing device for sewage treatment according to claim 1 is characterized in that: The bottom of the medicine liquid barrel (2) is configured to be conical.

3. The automatic metering and dosing device for sewage treatment according to claim 2 is characterized in that: The top and bottom of the liquid medicine barrel (2) are both connected to a connecting pipe (6).

4. The automatic metering and dosing device for sewage treatment according to claim 3 is characterized in that: An electric flow meter (61) and an electromagnetic valve (62) are installed on both of the two connecting pipes (6), and the electric flow meter (61) and the electromagnetic valve (62) on the same connecting pipe (6) are directly electrically connected.

5. The automatic metering and dosing device for sewage treatment according to claim 4 is characterized in that: A mixing rack (71) is rotatably arranged in the liquid medicine barrel (2).

6. The automatic metering and dosing device for sewage treatment according to claim 5 is characterized in that: A servo motor (7) is installed on the top of the liquid medicine barrel (2), and the output shaft of the servo motor (7) is fixedly connected to the top end of the rotating shaft of the mixing rack (71).

7. The automatic metering and dosing device for sewage treatment according to claim 6 is characterized in that: The top of the medicine liquid barrel (2) is fixedly connected to a spray pipe (8) via a fixing rod (82).

8. The automatic metering and dosing device for sewage treatment according to claim 7 is characterized in that: A flow guide pipe (81) is provided between the spray pipe (8) and the connecting pipe (6) at the top of the liquid medicine barrel (2).

9. An automatic metering and dosing device for sewage treatment according to claim 8, characterized in that: The nozzle (8) is arranged in a circular ring shape, and nozzles are provided at equal intervals on the nozzle (8).

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