CN-224228804-U - Dosing metering pump for sewage pretreatment device

CN224228804UCN 224228804 UCN224228804 UCN 224228804UCN-224228804-U

Abstract

The utility model discloses a dosing metering device, which belongs to the technical field of sewage treatment devices, and in particular relates to a dosing metering pump for a sewage pretreatment device, comprising a pump body, a driving assembly, a base, a first metering assembly, a second metering assembly and a feeding assembly; the inside of the pump body is in a cavity shape, the pump body is fixedly arranged on the base, the first metering assembly and the second metering assembly are respectively arranged at two ends of the pump body and are connected with the driving assembly, and the feeding assembly is respectively arranged on the first metering assembly and the second metering assembly; according to the utility model, the piston reciprocates in the cylinder body, a fixed volume of liquid is discharged per stroke, and the feeding amount in unit time can be very accurately controlled by accurately controlling the stroke length and/or the stroke frequency, and the metering accuracy is generally within +/-1% and is far higher than that of other types of dosing pumps.

Inventors

DING YEMIN
DING MINGXUAN

Assignees

江苏星晨环保集团有限公司
江苏宜星星晨环境工程有限公司

Dates

Publication Date: 20260512
Application Date: 20250702

Claims (5)

1. A dosing metering pump for a sewage pretreatment device is characterized by comprising a pump body, a driving assembly, a base, a first metering assembly, a second metering assembly and a feeding assembly; The inside of the pump body is in a cavity shape, the pump body is fixedly arranged on the base, the first metering assembly and the second metering assembly are respectively arranged at two ends of the pump body and are connected with the driving assembly, and the feeding assembly is respectively arranged on the first metering assembly and the second metering assembly; The driving assembly comprises a motor, a coupler, a shaft seat and a worm; The first metering assembly comprises a first worm wheel, a first crankshaft, a first cross head, a first piston rod, a first piston, a first connecting shell and a first cylinder body; the second metering assembly comprises a second worm wheel, a second crankshaft, a second crosshead, a second piston rod, a second piston, a second connecting shell and a second cylinder body; The feeding assembly comprises a feeding shell, a valve body, a valve cover and a spring.
2. The dosing metering pump for a sewage pretreatment device according to claim 1, wherein said motor is fixedly mounted on the top of said pump body, said shaft seat is positioned at the bottom of said pump body, one end of said worm is rotatably mounted in said shaft seat by means of a roller bearing, and the other end is connected with the rotating shaft of said motor by means of said coupling.
3. The dosing metering pump for a sewage pretreatment device according to claim 1, wherein one end of the first connecting shell is fixedly connected with one end of the pump body, the other end of the first connecting shell is fixedly connected with one end of the first cylinder body, the first worm wheel is rotatably installed on one side in the pump body through a rotating shaft and meshed with the worm, the first crankshaft is sleeved on the first worm wheel, the end of the first crankshaft is fixedly connected with the first cross head, the first cross head is slidably installed at the joint of the first connecting shell and the pump body, one end of the first piston rod is connected with the first cross head, the first piston rod is connected with the other end of the first piston rod and slidably installed in the first cylinder body, and the first piston rod is connected with one end cover of the first cylinder body through a shaft sleeve.
4. The dosing metering pump for a sewage pretreatment device according to claim 1, wherein one end of the second connecting shell is fixedly connected with the other end of the pump body, the other end of the second connecting shell is fixedly connected with one end of the second cylinder body, the second worm wheel is rotatably mounted on the other side in the pump body through a rotating shaft and meshed with the worm, the second crankshaft is sleeved on the second worm wheel, the end of the second crankshaft is fixedly connected with the second worm wheel, the second worm head is slidably mounted at the joint of the second connecting shell and the pump body, one end of the second piston rod is connected with the second cross head, and the second piston is connected with the other end of the second piston rod and slidably mounted in the second cylinder body.
5. A dosing metering pump for a wastewater pretreatment device as recited in claim 1, wherein said feed assembly is mounted to the top and bottom of said first and second cylinders of said first and second metering assemblies, respectively; The feeding shell of the feeding assembly is fixedly arranged at the top or bottom of the cylinder body and communicated with the inside of the cylinder body, the valve body and the valve cover are positioned in the feeding shell, the valve cover is positioned on the upper portion of the valve body, and the spring is sleeved on the valve body and supports the valve cover.

Description

Dosing metering pump for sewage pretreatment device Technical Field The utility model discloses a dosing metering device, belongs to the technical field of sewage treatment devices, and particularly relates to a dosing metering pump for a sewage pretreatment device. Background The sewage treatment is a process of purifying sewage by physical, chemical or biological technology to enable the sewage to reach the emission or recycling standard, and the sewage treatment has the functions of covering a plurality of dimensions such as environmental protection, resource utilization, health protection, economic development and the like, can remove harmful substances in the sewage, lightens the damage to natural environment and protects and restores the ecology of water bodies. Conventional sewage treatment facilities include dosing devices, and many chemical processes (e.g., neutralization, flocculation, precipitation, disinfection, dephosphorization, nutrient removal, etc.) in sewage treatment require precise control of the dosing amount of the chemicals. Insufficient dosage can lead to the treatment effect not reaching the standard (such as turbid effluent, incomplete disinfection, exceeding phosphorus standard, and the like), excessive dosage not only wastes expensive chemicals and increases the running cost, but also can bring secondary pollution (such as abnormal pH value of the effluent, excessive sludge generation, residual toxic byproducts, and the like), and even interfere with the subsequent biological treatment process. Disclosure of utility model The utility model aims to provide a dosing metering pump for a sewage pretreatment device, which solves the problems. The technical scheme is that the dosing metering pump for the sewage pretreatment device comprises a pump body, a driving component, a base, a first metering component, a second metering component and a feeding component; The inside of the pump body is in a cavity shape, the pump body is fixedly arranged on the base, the first metering assembly and the second metering assembly are respectively arranged at two ends of the pump body and are connected with the driving assembly, and the feeding assembly is respectively arranged on the first metering assembly and the second metering assembly; The driving assembly comprises a motor, a coupler, a shaft seat and a worm; The first metering assembly comprises a first worm wheel, a first crankshaft, a first cross head, a first piston rod, a first piston, a first connecting shell and a first cylinder body; the second metering assembly comprises a second worm wheel, a second crankshaft, a second crosshead, a second piston rod, a second piston, a second connecting shell and a second cylinder body; The feeding assembly comprises a feeding shell, a valve body, a valve cover and a spring. In a further embodiment, the motor is fixedly mounted on the top of the pump body, the shaft seat is positioned at the inner bottom of the pump body, one end of the worm is rotatably mounted in the shaft seat through a roller bearing, and the other end of the worm is connected with the rotating shaft of the motor through the coupler. In a further embodiment, one end of the first connecting shell is fixedly connected with one end of the pump body, the other end of the first connecting shell is fixedly connected with one end of the first cylinder body, the first worm wheel is rotatably installed on one side in the pump body through a rotating shaft and is meshed with the worm, the first crankshaft is sleeved on the first worm wheel, the end of the first crankshaft is fixedly connected with the first cross head, the first cross head is slidably installed at the joint of the first connecting shell and the pump body, one end of the first piston rod is connected with the first cross head, the first piston is connected with the other end of the first piston rod and is slidably installed in the first cylinder body, and the first piston rod is connected with an end cover of the first cylinder body through a shaft sleeve. In a further embodiment, one end of the second connecting shell is fixedly connected with the other end of the pump body, the other end of the second connecting shell is fixedly connected with one end of the second cylinder body, the second worm wheel is rotatably installed on the other side in the pump body through a rotating shaft and meshed with the worm, the second crankshaft is sleeved on the second worm wheel, the end of the second crankshaft is fixedly connected with the second worm wheel, the second crankshaft is slidably installed at the joint of the second connecting shell and the pump body, one end of the second piston rod is connected with the second cross head, and the second piston is connected with the other end of the second piston rod and slidably installed in the second cylinder body. In a further embodiment, the feed assembly is mounted to the top and bottom of the first and second cylinders of the fir