Sewage treatment dosing equipment for sewage tank

Abstract

The utility model belongs to sewage treatment technical field discloses a sewage treatment dosing equipment for sewage pool, including sewage pool still includes: buoyancy drive structure, buoyancy drive structure includes guide rod and float; frame, frame includes the carrier that installs on sewage pool, is installed with support frame on carrier; dosing mechanism, dosing mechanism includes dosing barrel, reagent storage tank, is installed with the link pipe of intercommunication between reagent storage tank and dosing barrel, installs a plurality of sprays on the upper portion outer surface of dosing barrel, the inner chamber sliding installation of dosing barrel has the piston, installs the spring that is in the form of circumferential array arrangement between the inner chamber bottom wall of piston and dosing barrel, the bottom of piston is installed with push rod, and push rod is located above float. The utility model replaces electronic sensor and electric control system through buoyancy mechanical drive, saves high electrical components, reduces the failure frequency caused by sensor contamination, corrosion at the same time, especially suitable for small and medium-sized sewage plant or budget limited scene.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a wastewater treatment dosing device for wastewater ponds. Background Technology

[0002] In the process of industrial and urban wastewater treatment, it is often necessary to add chemical agents, such as flocculants, pH adjusters, and phosphorus removal agents, to wastewater tanks (such as equalization tanks, reaction tanks, sedimentation tanks, etc.) to complete the precipitation, neutralization, or separation of pollutants.

[0003] Currently, most common dosing equipment adopts the "pump + pipeline + electrical control system" model. That is, the signal is transmitted to the PLC or microcontroller controller through detection instruments such as liquid level sensor, flow meter or online water quality analyzer. The controller then controls the start and stop and frequency of the metering pump according to the preset program, so as to accurately add the agent.

[0004] While this mode offers precise control, it suffers from the following problems: 1) High cost: The cost of the electronic control system, sensors, and metering pumps is high, resulting in a large initial investment for those with limited budgets or small to medium-sized wastewater treatment scenarios; 2) Complex maintenance: Sensors are prone to fouling, corrosion and malfunction in harsh wastewater environments, leading to inaccurate measurements. The electrical control system and precision pumps require professional maintenance, increasing operating costs and difficulty. Therefore, we propose a wastewater treatment dosing device for wastewater ponds. Utility Model Content

[0005] In view of the problems of high cost and complex maintenance of existing sewage treatment dosing equipment for sewage ponds, this utility model is proposed.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A wastewater treatment dosing device for a wastewater tank includes a wastewater tank and a buoyancy drive structure, the buoyancy drive structure including a guide rod vertically disposed in the wastewater tank and a float slidably sleeved on the guide rod; The frame includes a support frame mounted on the sewage tank, and a support frame is mounted on the support frame. The dosing mechanism includes a dosing cylinder mounted on the support frame and a reagent storage tank mounted within the support frame. A connecting pipe is installed between the reagent storage tank and the dosing cylinder. Several nozzles are installed on the upper outer surface of the dosing cylinder. A piston is slidably mounted in the inner cavity of the dosing cylinder. Springs arranged in a circumferential array are installed between the piston and the bottom wall of the inner cavity of the dosing cylinder. A push rod is installed at the bottom of the piston, penetrating the dosing cylinder and arranged in a circumferential array, and the push rod is located above the floating object.

[0007] As a technical solution of the sewage treatment dosing equipment for sewage tanks described in this utility model, the floating object is a hollow, sealed metal float or an engineering plastic float.

[0008] As a technical solution of the sewage treatment dosing equipment for sewage tanks according to the present utility model, the support frame is a U-shaped structure with a horizontal part and a vertical part, the horizontal part and the vertical part are integrally formed, the vertical part is installed on the sewage tank, and the dosing cylinder is installed through the horizontal part.

[0009] As a technical solution of the wastewater treatment dosing equipment for a sewage tank according to the present invention, wherein: a connected inlet pipe is installed on the top of the reagent storage tank, and a sealing plug is installed on the top of the inlet pipe.

[0010] As a technical solution of the sewage treatment dosing equipment for sewage tanks described in this utility model, a one-way valve is installed on the connecting pipe, and the flow direction of the one-way valve is from the chemical storage tank to the dosing cylinder.

[0011] As a technical solution of the sewage treatment dosing equipment for sewage tanks described in this utility model, a plurality of nozzles are arranged in an arc-shaped array and symmetrically arranged on both sides of the dosing cylinder.

[0012] As a technical solution of the sewage treatment dosing equipment for sewage tanks described in this utility model, one end of the spring is fixedly installed at the bottom of the piston, and the other end is fixedly installed on the bottom wall of the inner cavity of the dosing cylinder.

[0013] Compared with the prior art, the present invention has at least the following beneficial effects: 1. This utility model replaces electronic sensors and electrical control systems with buoyancy mechanical drive, saving expensive electrical components and reducing the frequency of failures caused by sensor contamination and corrosion. It is especially suitable for small and medium-sized sewage treatment plants or budget-constrained scenarios.

[0014] 2. This utility model, through the mechanical structure design of buoyancy drive, spring reset and one-way valve, is not afraid of sewage corrosion, dirt adhesion and humidity. It can reduce the maintenance frequency. Combined with the symmetrical layout of the nozzle and the cooperation of the sealed storage of the agent, it can further ensure the stability of the dosing and adapt to the complex working conditions of industrial sewage ponds. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is a schematic diagram of the main structure of this utility model.

[0016] Figure 2 This is a side view of the structure of this utility model.

[0017] Figure 3 This is a cross-sectional structural diagram of the present invention.

[0018] Figure 4 For the present utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0019] Explanation of reference numerals in the attached figures: In the diagram: 1. Sewage tank; 201. Guide rod; 202. Floating object; 301. Bearing frame; 302. Support frame; 401. Chemical storage tank; 4011. Inlet pipe; 4012. Sealing plug; 402. Connecting pipe; 403. One-way valve; 404. Dosing cartridge; 405. Nozzle; 406. Piston; 407. Spring; 408. Push rod. Detailed Implementation

[0020] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0021] Reference Figures 1-4 A wastewater treatment dosing device for a wastewater tank is provided. The wastewater treatment dosing device for a wastewater tank includes a wastewater tank 1 and a buoyancy drive structure. The buoyancy drive structure includes a guide rod 201 vertically arranged in the wastewater tank 1 and a float 202 slidably sleeved on the guide rod 201. The frame includes a support frame 301 mounted on the sewage tank 1, and a support frame 302 mounted on the support frame 301. The dosing mechanism includes a dosing cylinder 404 mounted on a support frame 301 and a chemical storage tank 401 mounted within a support frame 302. A connecting pipe 402 connects the chemical storage tank 401 and the dosing cylinder 404. Several connected nozzles 405 are mounted on the upper outer surface of the dosing cylinder 404. A piston 406 is slidably mounted inside the dosing cylinder 404. Springs 407 arranged in a circular array are installed between the piston 406 and the bottom wall of the inner cavity of the dosing cylinder 404. The bottom of the device is equipped with push rods 408 that pass through the dosing cylinder 404 and are arranged in a circular array. The push rods 408 are located above the float 202. In application, the float 202 slides along the guide rod 201 as the water level rises and falls, directly driving the push rods 408 and the piston 406. This eliminates the need for electronic sensors and controllers, reducing the failure rate and maintenance costs. At the same time, the spring 407 automatically rebounds and resets after the piston 406 moves, forming a mechanical circulating dosing system that does not require an external power source, is energy-saving, and adaptable to harsh environments.

[0022] Reference Figures 1-3 The float 202 is a hollow, sealed metal or engineering plastic float. The density of the float 202 is less than that of the sewage. It is made of corrosion-resistant material (such as PP engineering plastic). The buoyancy must be sufficient to push the push rod 408 and the tension spring 407. In application, the hollow, sealed metal / engineering plastic float has both corrosion resistance and long-term buoyancy stability, making it suitable for sewage chemical environments and extending its service life.

[0023] Reference Figure 1 and Figure 2 The support frame 301 is a U-shaped structure with a horizontal part and a vertical part. The horizontal part and the vertical part are integrally formed. The vertical part is installed on the sewage tank 1, and the dosing cylinder 404 is installed through the horizontal part. In application, the U-shaped integrally formed support frame 301 provides high structural stability. The vertical part is fixed to the tank wall, and the horizontal part supports the dosing cylinder 404, ensuring that the equipment can operate reliably under vibration or water flow impact.

[0024] Reference Figure 1 and Figure 2 The top of the medicine storage tank 401 is equipped with a connected medicine inlet pipe 4011, and the top of the medicine inlet pipe 4011 is equipped with a sealing plug 4012. In application, the medicine inlet pipe 4011 with the sealing plug 4012 achieves the sealed filling of medicine, prevents impurities from contaminating the medicine storage tank 401, and ensures the purity of the medicine.

[0025] Reference Figure 3 and Figure 4 A one-way valve 403 is installed on the connecting pipe 402, and the flow direction of the one-way valve 403 is from the chemical storage tank 401 to the dosing cylinder 404. In application, the one-way valve 403 on the connecting pipe 402 ensures that the chemical flows only from the chemical storage tank 401 to the dosing cylinder 404, preventing backflow or sewage backflow and ensuring the accuracy of dosing.

[0026] Reference Figure 3 and Figure 4 Several nozzles 405 are arranged in an arc-shaped array and symmetrically positioned on both sides of the dosing cylinder 404. The nozzle 405 has an orifice diameter of 0.5-2mm, which is adjusted according to the viscosity of the agent to ensure the atomization spraying effect. In application, the arc-shaped symmetrical arrangement of nozzles 405 expands the agent coverage area, optimizes the mixing efficiency of wastewater and agent, and reduces stirring energy consumption.

[0027] Reference Figure 3 and Figure 4 One end of the spring 407 is fixedly installed on the bottom of the piston 406, and the other end is fixedly installed on the bottom wall of the inner cavity of the dosing cylinder 404. The stiffness of the spring 407 is designed according to the requirements of the injection pressure of the agent to ensure that the piston 406 can be quickly reset when the water level drops. In application, both ends of the spring 407 are fixed to the bottom of the piston 406 and the dosing cylinder 404 to ensure that the reset trajectory of the piston 406 is stable, avoid deflection and jamming, and improve mechanical reliability.

[0028] The working principle of this utility model is as follows: Initial state stage: When the water level of sewage tank 1 is low, the floating object 202 is located at the bottom of the guide rod 201, the spring 407 is in a naturally extended state, the piston 406 is located in the lower part of the dosing cylinder 404, the nozzle 405 does not spray out any agent, and the agent storage tank 401 is filled with agent through the inlet pipe 4011 and then sealed with the sealing plug 4012. Dosing triggering stage: When the water level in sewage tank 1 rises, the floating object 202 floats up along the guide rod 201, pushing the push rod 408 to move upward, compressing the spring 407 and driving the piston 406 to move upward. When the piston 406 moves upward, the volume of the dosing cylinder 404 decreases, and the internal agent is pressurized and sprayed into sewage tank 1 through the nozzle 405. During this period, the one-way valve 403 prevents the agent from flowing back to the agent storage tank 401, ensuring that all the pressure is applied to the nozzle 405. Reset and circulation phase: When the water level drops, the floating object 202 falls down, the pressure of the push rod 408 on the piston 406 is released, the spring 407 releases potential energy, and drives the piston 406 to reset to the original position of the dosing cylinder 404. At the same time, when the piston 406 resets, a negative pressure is formed in the dosing cylinder 404, and the agent in the agent storage tank 401 is sucked into the cylinder through the connecting pipe 402 to prepare for the next dosing. Maintenance and operation phase: Regularly open the sealing plug 4012 to add medicine to the medicine storage tank 401. If the nozzle 405 is blocked, it can be disassembled and cleared with clean water or low-pressure airflow. At the same time, check the spring 407 for rust or deformation every quarter and replace it if necessary.

[0029] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A wastewater treatment dosing device for a wastewater tank, comprising a wastewater tank (1), characterized in that: Also includes: A buoyancy-driven structure, comprising a guide rod (201) vertically disposed within the sewage tank (1) and a float (202) slidably sleeved on the guide rod (201). The frame includes a support frame (301) mounted on the sewage tank (1), and a support frame (302) is mounted on the support frame (301). The dosing mechanism includes a dosing cylinder (404) mounted on the support frame (301) and a drug storage tank (401) mounted in the support frame (302). A connecting pipe (402) is installed between the drug storage tank (401) and the dosing cylinder (404). Several nozzles (405) are installed on the upper outer surface of the dosing cylinder (404). A piston (406) is slidably mounted in the inner cavity of the dosing cylinder (404). A spring (407) arranged in a circumferential array is installed between the piston (406) and the bottom wall of the inner cavity of the dosing cylinder (404). A push rod (408) is installed at the bottom of the piston (406) that penetrates the dosing cylinder (404) and is arranged in a circumferential array. The push rod (408) is located above the float (202).

2. The wastewater treatment dosing equipment for a wastewater tank according to claim 1, characterized in that: The floating object (202) is a hollow, sealed metal float or an engineering plastic float.

3. The wastewater treatment dosing equipment for a wastewater tank according to claim 1, characterized in that: The support frame (301) is a U-shaped structure with a horizontal part and a vertical part. The horizontal part and the vertical part are integrally formed. The vertical part is installed on the sewage tank (1). The dosing cylinder (404) is installed through the horizontal part.

4. The wastewater treatment dosing equipment for a wastewater tank according to claim 1, characterized in that: The top of the medicine storage tank (401) is equipped with a connected medicine inlet pipe (4011), and the top of the medicine inlet pipe (4011) is equipped with a sealing plug (4012).

5. The wastewater treatment dosing equipment for a wastewater tank according to claim 1, characterized in that: A one-way valve (403) is installed on the connecting pipe (402), and the flow direction of the one-way valve (403) is from the medicine storage tank (401) to the dosing cylinder (404).

6. The wastewater treatment dosing equipment for a wastewater tank according to claim 1, characterized in that: Several of the nozzles (405) are arranged in an arc-shaped array and symmetrically disposed on both sides of the dosing cylinder (404).

7. The wastewater treatment dosing equipment for a wastewater tank according to claim 1, characterized in that: One end of the spring (407) is fixedly installed at the bottom of the piston (406), and the other end is fixedly installed on the bottom wall of the inner cavity of the dosing cylinder (404).

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