Pipeline dosing and mixing device

Abstract

The utility model provides a pipeline dosing mixing device which relates to the technical field of water treatment dosing equipment and comprises a steel pipe, two connecting flanges are fixedly connected to the outer surfaces of the two ends of the steel pipe, a through hole is formed in the longitudinal center of the steel pipe, the steel pipe is communicated with a short pipe through the through hole, and a dosing pipe is inserted into an opening in the end, away from the steel pipe, of the short pipe. The dosing pipe penetrates through the through hole and is inserted into the steel pipe, and the dosing pipe is sleeved with a sealing assembly; the technical effects that the head loss is reduced, the device can be flexibly arranged at different positions according to the water treatment process characteristics, water plant process pipelines can be synchronously replaced, and the size of an original valve well cannot be increased when the device is installed in the valve well are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment chemical dosing equipment, and particularly relates to a pipeline chemical dosing and mixing device. Background Technique

[0002] Due to the diversity and complexity of its treatment processes, water treatment plants usually need to add various chemicals to ensure that the water quality meets the established treatment goals. These chemicals include, but are not limited to, flocculants, disinfectants, pH regulators, and oxidants, etc., and each chemical is targeted at different pollutants or water quality problems. According to the characteristics and requirements of different processes, multiple chemical dosing points often need to be set up in the plant to ensure that the chemicals can be accurately dosed to the appropriate positions in the treatment process. In addition, water treatment plants also need to consider the dosing amount, dosing frequency, and dosing method of the chemicals to adapt to different water quality conditions and treatment requirements.

[0003] In the prior art, a pipe mixer is usually used for chemical dosing, but there are some inherent limitations in the design and application of this equipment. First of all, due to its large volume and structure, the pipe mixer often causes significant head loss during the fluid flow process, and this loss accumulates with the increase in the number of mixers, resulting in an increase in the energy consumption of the entire system, and thus increasing the operating cost.

[0004] Secondly, it also makes the construction and maintenance processes more complex and expensive. Each pipe mixer requires a separate inspection well, which not only increases the scale of the civil engineering project but may also lead to an extension of the construction period. In addition, the setting of the inspection well needs to consider the layout of underground facilities and the requirements of urban planning, which will further increase the construction difficulty and cost. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a pipeline chemical dosing and mixing device to alleviate the technical problem that the pipe mixer in the prior art causes head loss during the fluid flow process due to its large volume and structure.

[0006] The utility model provides a pipeline chemical dosing and mixing device, including: a steel pipe, two connecting flanges are fixedly connected to the outer surfaces at both ends of the steel pipe, a through hole is opened at the longitudinal center position of the steel pipe, the steel pipe is communicated with a short pipe through the through hole, the open end of the short pipe away from the steel pipe is inserted with a chemical dosing pipe, the chemical dosing pipe passes through the through hole and is inserted into the steel pipe, and a sealing assembly is sleeved on the chemical dosing pipe;

[0007] Further, the sealing assembly includes a first flange, a rubber sheet, a plastic wing plate, and a second flange sleeved on the chemical dosing pipe in sequence from bottom to top, bolts are threadedly connected through bolt holes between the first flange and the second flange, and fillet welding reinforcement is carried out between the first flange and the short pipe;

[0008] Further, the radial length of the through hole is not less than the radius of the short pipe;

[0009] Further, the short pipes and the steel pipes are reinforced by L-shaped angle irons;

[0010] Further, one end of the chemical addition pipe inserted into the steel pipe is an inclined cut, and the inclined cut has an inclined cutting angle of 30° - 35° that can make the water flow form a turbulent flow;

[0011] Further, the height of the inclined cut from the bottom of the steel pipe is one-fourth of the radius of the steel pipe;

[0012] Further, the length of the steel pipe is 1 m;

[0013] Further, anti-corrosion coatings are provided on the inner walls of the steel pipe and the chemical addition pipe;

[0014] Further, an emergency cut-off valve is provided on the side wall of the chemical addition pipe far from the steel pipe;

[0015] Further, a chemical agent monitoring sensor is provided at the end of the steel pipe along the water flow direction.

[0016] Beneficial effects:

[0017] The pipeline chemical addition mixing device of the present utility model includes: a steel pipe, and two connecting flanges are fixedly connected to the outer surfaces of both ends of the steel pipe, which can effectively save the time for on-site welding and fabrication; a through hole is provided at the longitudinal center position of the steel pipe, the steel pipe is communicated with a short pipe through the through hole, one end of the short pipe far from the steel pipe is inserted with a chemical addition pipe, the chemical addition pipe passes through the through hole and is inserted into the steel pipe, the inclined cut of the chemical addition pipe has an inclined cutting angle of 30° - 35° that can make the water flow form a turbulent flow, effectively improving the sufficiency of chemical agent mixing, and a sealing assembly is sleeved on the chemical addition pipe to assist in sealing;

[0018] Compared with the traditional chemical addition mixing device, it reduces the head loss for the entire water treatment process, can be flexibly set at different positions according to the characteristics of the water treatment process, can synchronously replace the process pipeline of the water plant, and will not cause an increase in the size of the original valve well when installed in the valve well. Description of the drawings

[0019] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a schematic structural diagram of the mixing device provided by the embodiment of the present utility model;

[0021] Figure 2 Structural schematic diagram of the steel pipe in the mixing device provided by the embodiment of the present utility model;

[0022] Figure 3 Structural schematic diagram of the plastic wing plate in the mixing device provided by the embodiment of the present utility model;

[0023] Figure 4 Structural schematic diagram of the second flange in the mixing device provided by the embodiment of the present utility model;

[0024] Figure 5 Schematic diagram of the working process of the mixing device provided by the embodiment of the present utility model.

[0025] Icon:

[0026] 100 - Steel pipe; 200 - Connecting flange; 300 - Through hole; 400 - Short pipe; 500 - Chemical adding pipe; 501 - Oblique cut; 600 - Sealing assembly; 601 - First flange; 602 - Rubber sheet; 603 - Plastic wing plate; 604 - Second flange; 605 - Bolt; 700 - Emergency cut-off valve; 800 - Chemical agent monitoring sensor. Specific implementation manners

[0027] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the present utility model to be protected, but merely represents the selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts fall within the protection scope of the present utility model.

[0029] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0030] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is customarily placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, terms such as "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0031] In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging vertically, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0032] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0033] The following further describes the present utility model in detail through specific embodiments in conjunction with the drawings.

[0034] As Figure 1 , Figure 2 shown, this embodiment provides a pipeline chemical dosing and mixing device, including: a steel pipe 100, and two connecting flanges 200 are fixedly connected to the outer surfaces at both ends of the steel pipe 100. By installing the connecting flanges 200 at both ends of the steel pipe 100, it is convenient to achieve rapid connection with other pipelines on site. Bolts and nuts are used to tightly fix the two connecting flanges 200 together to form a sealed pipeline connection. Compared with traditional on-site welding, the use of connecting flanges 200 can significantly save construction time and cost. Traditional welding not only requires professional welding techniques, but also involves the cooling and inspection processes after welding, which increases the complexity and time consumption of the project. While for the connecting flanges 200, only ensuring that the bolts are tightened in place can quickly complete the pipeline installation work.

[0035] In addition, due to design changes or equipment upgrades, it may be necessary to adjust or re-layout the pipeline. Since the disassembly of the connecting flange 200 is relatively easy, when facing these changes, it can be more flexible to respond, reducing the additional workload caused by pipeline renovation.

[0036] A through hole 300 is provided at the longitudinal center position of the steel pipe 100. The steel pipe 100 is connected to a short pipe 400 through the through hole 300. One end opening of the short pipe 400 away from the steel pipe 100 is inserted with a chemical dosing pipe 500, which can avoid using welding or other connection methods that may cause leakage in the pipeline system; it allows the addition of chemicals at one end of the chemical dosing pipe 500, providing flexibility for chemical dosing.

[0037] The chemical dosing pipe 500 passes through the through hole 300 and is inserted into the interior of the steel pipe 100; due to the compact layout of the short pipe 400 and the chemical dosing pipe 500, this design can effectively save space, especially suitable for water treatment processes with limited space. The small structure can reduce the head loss.

[0038] As Figure 3 、 Figure 4 shown, the chemical dosing pipe 500 is sleeved with a sealing assembly 600, ensuring the sealing effect between the chemical dosing pipe 500 and the short pipe 400; the sealing assembly 600 includes a first flange 601, a rubber sheet 602, a plastic wing plate 603, and a second flange 604 sleeved on the chemical dosing pipe 500 in sequence from bottom to top. Bolts 605 connected by threaded holes are used to fasten between the first flange 601 and the second flange 604, and fillet welding reinforcement is carried out between the first flange 601 and the short pipe 400. An efficient sealing effect is achieved under extreme device sizes. A rubber sheet 602 is arranged under the plastic wing plate 603 to increase the fit and reduce the risk of liquid leakage.

[0039] In a preferred embodiment of the present utility model, the radial length of the through hole 300 is not less than the radius of the short pipe 400, because when it is to insert the chemical dosing pipe 500, it will not cause an increase in the size of the original valve well.

[0040] The short pipe 400 and the steel pipe 100 are both reinforced by L-shaped angle irons. The reinforcement effect of the L-shaped angle irons can significantly improve the connection stability between the short pipe 400 and the steel pipe 100. This reinforcement method can prevent loosening or misalignment of the pipeline connection caused by external forces or internal pressure changes. Moreover, during the fluid flow process, the steel pipe 100 may vibrate due to pressure fluctuations or flow rate changes. The use of L-shaped angle irons can effectively reduce this vibration and protect the pipeline connection from damage.

[0041] In a preferred embodiment of the present utility model, one end of the chemical dosing pipe 500 inserted into the steel pipe 100 is an inclined cut 501, and the inclined cut 501 has an inclined cut angle of 30° - 35° that can cause the water flow to form a turbulent flow. It can promote the formation of a turbulent flow when the water flow enters the steel pipe 100, improve the mixing efficiency of the fluid and the added substances in the chemical dosing pipe 500, and ensure more uniform mixing. Moreover, the turbulent flow helps to reduce the deposition of the fluid on the inner wall of the pipe, thereby reducing the difficulty of cleaning. The height of the inclined cut 501 from the bottom of the steel pipe 100 is one-fourth of the radius of the steel pipe 100, which is combined with the above-mentioned inclined cut.

[0042] In a preferred embodiment of the present utility model, the length of the steel pipe is 1 m. With its standardized length of 1 m, it meets the requirements of mass production. This design makes it an ideal substitute for the process pipelines in water treatment plants. Since the length of the steel pipe conforms to the standard 1-meter size, it can seamlessly integrate into the existing pipeline system without any increase or modification to the size of the valve well. Installing it in the valve well will not cause an increase in the size of the original valve well.

[0043] In a preferred embodiment of the present utility model, anti-corrosion coatings are provided on the inner walls of both the steel pipe 100 and the chemical dosing pipe 500. The chemical dosing pipe 500 of this application is made of ABS material, which has excellent corrosion resistance. With the addition of the anti-corrosion layer, it reduces the problem of damage to the pipeline and frequent replacement during the chemical dosing process in the water treatment plant.

[0044] An emergency cut-off valve 700 is provided on a side wall of a section of the chemical dosing pipe 500 far from the steel pipe 100. The emergency cut-off valve 700 is an important safety feature that allows the operator to quickly cut off the connection between the chemical dosing pipe and the system when needed to deal with possible emergencies or perform maintenance work.

[0045] A chemical agent monitoring sensor 800 is provided at the end of the steel pipe 100 along the water flow direction. It is used to monitor and analyze the concentration of the chemical agent flowing through the steel pipe in real time to ensure that the dosage of the chemical agent meets the process requirements. Through precise monitoring, the sensor 800 can provide key data to help the operator adjust the chemical dosage and optimize the water treatment process.

[0046] Based on the above embodiments, the installation process and working process of the pipeline chemical dosing mixing device are as follows: As Figure 5As shown in the figure, first connect the short pipe 400 to the steel pipe 100 through the through hole 300 on the steel pipe 100 and weld them, and then reinforce with L-shaped angle iron; then insert the chemical dosing pipe 500, put the first flange 601 on the chemical dosing pipe 500 and weld it to the short pipe 400 and reinforce with a fillet weld, then successively put on the rubber sheet 602, plastic wing plate 603 and the second flange 604, and then reinforce the two flanges with bolts 605. Then set the emergency cut-off valve 700 and the chemical agent monitoring sensor 800 respectively. Make a quick connection with other on-site pipelines through the two connecting flanges 200 fixedly connected to the outer surfaces of both ends of the steel pipe 100.

[0047] Water flows into the steel pipe 100 from the process water treatment pipeline. At this time, chemicals are added from the top of the chemical dosing pipe 500, and a turbulent flow is formed at the center position of the steel pipe 100 and mixed with the water flow and then flows out; the chemical agent monitoring sensor 800 monitors in real time during the process, and when a problem occurs, the addition of chemicals is cut off in time through the emergency cut-off valve 700.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. Pipeline dosing and mixing device, characterized in that: include: A steel pipe (100), wherein two connecting flanges (200) are fixedly connected to the outer surfaces of both ends of the steel pipe (100), a through hole (300) is opened at the longitudinal center position of the steel pipe (100), the steel pipe (100) is connected to a short pipe (400) through the through hole (300), a dosing pipe (500) is inserted into the opening of one end of the short pipe (400) away from the steel pipe (100), the dosing pipe (500) passes through the through hole (300) and is inserted into the interior of the steel pipe (100), and the dosing pipe (500) is sleeved with a sealing component (600).

2. The pipeline dosing and mixing device according to claim 1, characterized in that: The sealing assembly (600) comprises a first flange (601), a rubber sheet (602), a plastic wing plate (603) and a second flange (604) which are sequentially sleeved on the dosing tube (500) from bottom to top, the first flange (601) and the second flange (604) are fastened by bolts (605) threadedly connected through bolt holes, and the first flange (601) and the short tube (400) are reinforced by a weld corner.

3. The pipeline dosing and mixing device according to claim 1, characterized in that: The radial length of the through hole (300) is not less than the radius of the short tube (400).

4. The pipeline dosing and mixing device according to claim 1, characterized in that: The short tube (400) and the steel tube (100) are reinforced by L-shaped angle irons.

5. The pipeline dosing and mixing device according to claim 1, characterized in that: One end of the dosing tube (500) inserted into the steel tube (100) is formed with an oblique cut (501), and the oblique cut (501) is formed with an oblique cut angle of 30° to 35° which can allow the water flow to form turbulent flow.

6. The pipeline dosing and mixing device according to claim 5, characterized in that: The height of the oblique cut (501) from the bottom of the steel pipe (100) is one quarter of the radius of the steel pipe (100).

7. The pipeline dosing and mixing device according to claim 1, characterized in that: The length of the steel pipe (100) is 1 m.

8. The pipeline dosing and mixing device according to claim 1, characterized in that: The inner walls of the steel pipe (100) and the dosing pipe (500) are both provided with an anti-corrosion coating.

9. The pipeline dosing and mixing device according to claim 1, characterized in that: An emergency shut-off valve (700) is provided on a section of the side wall of the dosing pipe (500) away from the steel pipe (100).

10. The pipeline dosing and mixing device according to claim 1, characterized in that: A medicine monitoring sensor (800) is arranged at the end of the steel pipe (100) along the water flow direction.

Images