阅读说明：本技术 低势能负压加药混合装置及其装配方法 (Low-potential-energy negative-pressure dosing and mixing device and assembling method thereof ) 是由 陈海鹰 檀冰 于 2020-07-30 设计创作，主要内容包括：本发明涉及一种低势能负压加药混合装置及其装配方法,包括用于与进水管相连接的立式粗滤器,所述立式粗滤器的出水管上竖直连接有转子流量计,所述出水管与转子流量计的输出端之间并联有水射负压吸药计量装置,所述转子流量计的输出端还设置有实现药物与原水混合的药物静态混合器。该低势能负压加药混合装置通过负压将药剂吸入,有效节约能耗,提高适用范围；同时装配方法简便。(The invention relates to a low-potential negative-pressure dosing and mixing device and an assembly method thereof, and the device comprises a vertical coarse filter connected with a water inlet pipe, wherein a rotor flow meter is vertically connected to a water outlet pipe of the vertical coarse filter, a water jet negative-pressure dosing and metering device is connected between the water outlet pipe and the output end of the rotor flow meter in parallel, and a drug static mixer for mixing drugs and raw water is further arranged at the output end of the rotor flow meter. The low-potential negative-pressure dosing and mixing device sucks the medicament through negative pressure, so that the energy consumption is effectively saved, and the application range is improved; meanwhile, the assembly method is simple and convenient.)

1. The low-potential negative-pressure dosing and mixing device comprises a vertical coarse filter connected with a water supply pipe, and is characterized in that a rotor flow meter is vertically connected to a water outlet pipe of the vertical coarse filter, a water jet negative-pressure drug suction metering device is connected to the water outlet pipe, the other end of the water jet negative-pressure drug suction metering device is connected with the output end of the rotor flow meter, and a drug static mixer for mixing drugs and raw water is further arranged at the output end of the rotor flow meter.

2. The low-potential negative-pressure medicine-feeding and mixing device as claimed in claim 1, wherein the water-jet negative-pressure medicine-sucking metering device comprises a water-inlet filter which is vertically arranged and the water inlet end of which is connected to the side wall of the water outlet pipe of the vertical coarse filter, the output end of the water-inlet filter is connected with a water-jet negative-pressure generator assembly, and the medicine inlet end of the water-jet negative-pressure generator assembly is connected with a medicine-feeding flow metering device.

3. The low-potential negative-pressure dosing and mixing device as claimed in claim 2, wherein the vertical coarse filter and the water inlet filter respectively comprise a cylinder, a quick-release top plate is arranged at the upper end of the cylinder, a bottom plate is covered at the lower end of the cylinder, a water inlet pipe is arranged on the side wall of the upper part of the cylinder, a water outlet pipe is arranged on the side wall of the lower part of the cylinder, and a filter cartridge is arranged between the water inlet pipe and the water outlet pipe in the cylinder.

4. The low-potential negative-pressure dosing and mixing device as claimed in claim 3, wherein an obliquely upward guide plate is arranged at the water outlet end of the water inlet pipe, and an automatic exhaust valve is connected to a quick-release top plate of the vertical strainer.

5. The low potential energy negative pressure medicine-adding mixing device of claim 2, 3 or 4, wherein the water-jet negative pressure generator component comprises a water jet made of plastic, the water jet is wrapped by a stainless steel shell, an insulating layer is filled between the stainless steel shell and the outer wall of the water jet, and the water outlet end of the water jet is connected with the input end of the medicine static mixer through a copper gate valve.

6. The low potential energy negative pressure dosing and mixing device according to claim 2, 3 or 4, wherein the dosing flow metering device comprises a plate-type flowmeter, a stainless steel shell which exposes a scale surface of the plate-type flowmeter is arranged outside the plate-type flowmeter, a heat insulating material is filled between the stainless steel shell and the plate-type flowmeter, a loose joint check valve which is connected with a dosing water level constant device is connected to a water inlet of the plate-type flowmeter, and a water outlet of the plate-type flowmeter is connected with a dosing end of the water jet negative pressure generator assembly.

7. The low-potential negative-pressure dosing and mixing device as claimed in claim 1, wherein the static mixer comprises a vertical pipe body, a mixing unit assembly for making fluid flow in a positive and negative rotational direction is axially arranged in the pipe body, a dosing pipe radially penetrating the pipe body is arranged at the water inlet end of the pipe body, and an inclined surface facing the water outlet end of the pipe body is arranged at the output end of the dosing pipe extending into the pipe body.

8. The low-potential negative-pressure dosing and mixing device as claimed in claim 7, wherein the mixing unit assembly comprises a plurality of groups of X-shaped unit assemblies formed by cross-fixing two arc-shaped unit pieces which are arranged in front of and behind each other and have outward arc-shaped edges, and two side ends of two adjacent X-shaped unit assemblies are respectively and fixedly connected.

9. The low-potential negative-pressure medicine-feeding mixing device as claimed in claim 1, wherein a water supply pipe of the vertical coarse filter is connected with a water inlet main gate, a pressure testing assembly is installed on the water supply pipe, a gate valve is installed between the output end of the rotameter and the medicine static mixer, and the output end of the gate valve is connected with the output end of the water-jet negative-pressure medicine-sucking metering device.

10. An assembling method applied to the low-potential negative-pressure dosing and mixing device of claim 6 is characterized by comprising the following steps of:

(1) a water inlet main gate is arranged on the water inlet end of the vertical coarse filter, and a pressure testing component is arranged on the water inlet pipe;

(2) a water outlet pipe of the vertical coarse filter is connected with a bent pipe with an upward output end through a quick-release flange, a rotameter is vertically installed at the output end of the bent pipe, and a medicine static mixer is vertically installed at the output end of the rotameter through a gate valve and the quick-release flange;

(3) a water inlet filter is arranged on a branch pipe of the elbow pipe, a water jet negative pressure generator assembly is arranged at the output end of the water inlet filter through a quick-release flange, and a dosing flow metering device is arranged at the dosing end of the water jet negative pressure generator assembly;

(4) and a copper gate valve is arranged at the water outlet end of the water jet negative pressure generator assembly, and the output end of the copper gate valve is connected with the side wall of the output end of the gate valve.

Technical Field

The invention relates to a low-potential negative-pressure dosing and mixing device and an assembly method thereof.

Background

The raw water needs to be subjected to the working procedures of adding a flocculating agent, mixing, flocculation reaction, precipitation, filtration, disinfection and the like in the purification process. In addition, electric dosing is usually adopted in the process of adding the flocculating agent, and for mountain areas, the difficulty in wire pulling, installation and the like of electric wires is high, and the cost is high. Because raw water is required to be coarsely filtered before adding a medicament, large-particle impurities are coarsely filtered, but the conventional device for coarsely filtering raw water is complex in structure and not beneficial to cleaning and installation of filter elements and the like.

In the process of adding the flocculating agent, the adding amount of the medicament needs to be measured so as to control the adding amount of the medicament. The existing metering method for the medicament generally adopts an organic plate glass type flowmeter. Because the organic plate glass type flowmeter is a glass product, the temperature difference between day and night is large in some mountainous areas or northern areas, and the temperature is low, especially in winter. The organic plate glass type flowmeter is easy to freeze and break, so that the flowmeter cannot work normally.

Simultaneously current charge device that is used for the medicament to add to mix can't let medicament and water intensive mixing usually, appears the powder easily and does not fully dissolve, mixes the poor condition of effect, is unfavorable for in the follow-up procedure impurity in the raw water and medicament to take place flocculation reaction.

Disclosure of Invention

The invention aims to provide a low-potential negative-pressure dosing and mixing device and an assembly method thereof, wherein the low-potential negative-pressure dosing and mixing device sucks a medicament through negative pressure, so that the energy consumption is effectively saved, and the application range is widened; meanwhile, the assembly method is simple and convenient.

The technical scheme of the invention is as follows: the utility model provides a low potential energy negative pressure adds medicine mixing arrangement, is including being used for the vertical strainer that is connected with the delivery pipe, vertical rotameter that is connected with on the outlet pipe of vertical strainer, be connected with the water that the other end is connected with rotameter's output on the outlet pipe and penetrate negative pressure and inhale medicine metering device, rotameter's output still is provided with the medicine static mixer that realizes medicine and raw water and mix.

Further, the water jet negative pressure medicine suction metering device comprises a water inlet filter which is vertically arranged and is connected with the water inlet end on the side wall of the water outlet pipe of the vertical coarse filter, the output end of the water inlet filter is connected with a water jet negative pressure generator assembly, and the medicine inlet end of the water jet negative pressure generator assembly is connected with a medicine feeding flow metering device.

Further, vertical strainer and water filter include a barrel respectively, the upper end of barrel is provided with the quick detach roof, and the lower extreme closing cap of barrel has the bottom plate, is provided with the inlet tube on the upper portion lateral wall of barrel, and the lower part lateral wall of barrel is provided with the outlet pipe, lies in to be provided with between inlet tube and the outlet pipe in the barrel and strains a section of thick bamboo.

Furthermore, the water outlet end of the water inlet pipe is provided with an oblique upward guide plate, and an automatic exhaust valve is connected to a quick-release top plate of the vertical type coarse filter.

Furthermore, the water jet negative pressure generator component comprises a water jet device made of plastics, a stainless steel shell is wrapped outside the water jet device, a heat insulation layer is filled between the stainless steel shell and the outer wall of the water jet device, and the water outlet end of the water jet device is connected with the input end of the medicine static mixer through a copper gate valve.

Further, add medicine flow metering device includes plate flowmeter, plate flowmeter is provided with the stainless steel shell that makes plate flowmeter's scale surface expose outward, is located to be filled between stainless steel shell and the plate flowmeter and has the insulation material, be connected with the loose joint type check valve that is used for being connected with the invariable ware of medicine water level on plate flowmeter's the water inlet, plate flowmeter's delivery port and the end of intaking that water jetted negative pressure generator subassembly are connected.

Further, medicine static mixer includes a vertical body, be provided with along the axial in the body and be used for making the fluid form the mixing unit subassembly that just, the backspin flows, the tip of intaking of body is provided with the pencil that adds that radially penetrates the body, the pencil stretches into the output in the body and is provided with the inclined plane towards body water outlet end.

Furthermore, the mixing unit assembly comprises a plurality of groups of X-shaped unit assemblies formed by cross-fixing two arc-shaped unit pieces which are arranged in front and at back and have outward arc-shaped edges, and two side ends of two vertically adjacent X-shaped unit assemblies are respectively and fixedly connected.

Furthermore, a water inlet main gate is connected to a water supply pipe of the vertical type coarse filter, a pressure testing assembly is installed on the water supply pipe, a gate valve is installed between the output end of the rotor flow meter and the medicine static mixer, and the output end of the gate valve is connected with the output end of the water jet negative pressure medicine suction metering device.

An assembling method of a low-potential negative-pressure dosing and mixing device comprises the following steps:

(1) a water inlet main gate is arranged on the water inlet end of the vertical coarse filter, and a pressure testing component is arranged on the water inlet pipe;

(2) a water outlet pipe of the vertical coarse filter is connected with a bent pipe with an upward output end through a quick-release flange, a rotameter is vertically installed at the output end of the bent pipe, and a medicine static mixer is vertically installed at the output end of the rotameter through a gate valve and the quick-release flange;

(3) a water inlet filter is arranged on a branch pipe of the elbow pipe, a water jet negative pressure generator assembly is arranged at the output end of the water inlet filter through a quick-release flange, and a dosing flow metering device is arranged at the dosing end of the water jet negative pressure generator assembly;

(4) and a copper gate valve is arranged at the water outlet end of the water jet negative pressure generator assembly, and the output end of the copper gate valve is connected with the side wall of the output end of the gate valve.

Compared with the prior art, the invention has the following advantages:

1. this low potential energy negative pressure adds medicine mixing arrangement is compact structure not only, and the negative pressure that produces through the water dart inhales the medicament moreover, need not to insert electric charge device such as power in addition, effectively practices thrift the energy consumption, improves the scope that whole device is applicable.

2. The coarse filter of the device has simple and compact structure, is favorable for blocking and filtering large-particle impurities such as leaves, grass roots, sand and stones and the like of input raw water, improves the purity of the output raw water, and prevents the input raw water from influencing a dosing device; and through the quick-release top plate, the filter cartridge is convenient to clean after being dirty.

3. The coarse filter is matched with an automatic exhaust valve to exhaust air in raw water, so that the water inflow is stable and the automatic back flushing of the filter is ensured to be normal.

4. The medicine flow metering device that adds in the device not only can prevent that the back valve from preventing the medicament from flowing back, improves plate flowmeter's use application temperature through increasing insulation material and stainless steel shell to plate flowmeter moreover, reduces plate flowmeter and takes place cracked probability because of the condition that low temperature freezes, improves life.

5. The water ejector of the device is provided with the heat preservation layer and the stainless steel shell, the service temperature range of the water ejector is improved, the water ejector is prevented from being broken at the subzero temperature, the service life of the water ejector is prolonged, and the probability of damage of the water ejector is reduced.

6. The medicine static mixer of the device can make different fluids rotate positively and negatively in three-dimensional space to form flow, and the different fluids are dispersed and mixed with each other; has the characteristics of good mixing effect, non-uniform coefficient GX-2 less than or equal to 1 percent in the mixing process, difficult blockage and the like.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a left side view of FIG. 1 of the present invention;

FIG. 3 is a schematic view of the vertical strainer or water inlet filter of the present invention;

FIG. 4 is a top view of FIG. 3 of the present invention;

FIG. 5 is a view of the invention from the K-direction of FIG. 3;

FIG. 6 is another schematic view of the vertical strainer or water inlet filter of the present invention;

FIG. 7 is a top view of FIG. 6 in accordance with the present invention;

FIG. 8 is a schematic structural view of a water jet negative pressure generator assembly of the present invention;

FIG. 9 is a schematic structural view of the dosing flow metering device of the present invention;

FIG. 10 is a side view of the medicated flow metering device of the present invention;

FIG. 11 is a top view of the medicated flow metering device of the present invention;

FIG. 12 is a cross-sectional view of a plate flowmeter of the present invention;

FIG. 13 is a schematic structural view of a static mixer for pharmaceuticals of the present invention;

FIG. 14 is a partial schematic view of the hybrid unit assembly of the present invention;

FIG. 15 is a schematic diagram of an arcuate die of the present invention;

in the figure: 100-vertical coarse filter 110-cylinder 111-bottom plate 120-quick-release top plate 121-quick-release flange 122-automatic exhaust valve 123-vent hole 130-water inlet pipe 131-branch pipe 132-mounting hole 140-filter cylinder 141-annular flange 142-cushion block 150-water outlet pipe 160-pressure test component 170-water inlet general gate 180-quick-release flange 190-elbow 200-rotameter 210-gate valve 300-drug static mixer 310-pipe body 311-flange 320-mixing unit component 321-X type unit component 322-arc unit piece 323-notch 324-included angle 330-drug feeding pipe 331-inclined plane 400-water inlet filter 500-water jet negative pressure generator component 510-water jet 511- The device comprises a water inlet end 512, a water outlet end 513, a drug adding port 514, an axial reinforcing rib 520, a stainless steel shell 530, a heat insulation layer 540, a copper gate valve 600, a drug adding flow metering device 610, a plate-type flow meter 611, a stainless steel shell 612, a heat insulation material 613, a mounting hole 620, a loose joint check valve 630 and a liquid outlet pipe.

Detailed Description

In order to make the aforementioned features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below, but the present invention is not limited thereto.

Refer to fig. 1 to 15

The utility model provides a low potential energy negative pressure adds medicine mixing arrangement, is including being used for the vertical strainer 100 that is connected with the delivery pipe, the quick detach is connected with the vertical rotameter 200 that sets up on the outlet pipe of vertical strainer, gate valve 210 is installed to rotameter's output, be connected with the water jet negative pressure that the other end is connected with gate valve 210's output on the outlet pipe 150 of vertical strainer and inhale medicine metering device to inhale the medicament and supply with the gate valve output. The output end of the gate valve is connected with a medicine static mixer 300 which realizes the mixing of the medicine and the raw water in a quick-release way, so that the medicine input by the water jet negative pressure medicine suction metering device is mixed with the raw water.

In this embodiment, in order to realize the suction of medicament, water jets negative pressure and inhales medicine metering device and includes that vertical setting and the end of intaking connects the filter 400 that intakes on vertical strainer outlet pipe lateral wall, the output of filter that intakes is connected with the water that vertical setting and jets negative pressure generator subassembly 500, the end of intaking that water jetted negative pressure generator subassembly is connected with and adds medicine flow metering device 600 to inhale the medicament through the negative pressure that water jetted negative pressure generator subassembly produced, and measure inspiratory medicament through adding medicine flow metering device.

In this embodiment, in order to filter out the large granule impurity separation such as the leaf, grass root, gravel and sand of the pair of input to former aquatic, vertical strainer 100 includes a barrel 110, quick detach roof 120 is installed through quick detach flange 121 in the upper end of barrel to realize the quick detach of roof, and will strain a section of thick bamboo through quick detach roof and take out and wash, overcome current strainer or water inlet filter and be unfavorable for straining a abluent defect. The lower end of the cylinder is covered with a bottom plate 111, the upper part of the cylinder is provided with a water inlet pipe 130 connected with a water supply pipe, the lower side wall of the cylinder is provided with a water outlet port connected with a water outlet pipe 150, and a filter cartridge 140 is arranged between the water inlet pipe and the water outlet pipe in the cylinder.

In this embodiment, the water outlet end of the water inlet pipe is provided with an upward inclined guide plate 133 so as to guide raw water to the upper part of the cylinder in an upward flowing manner, so that the raw water flows downward from the upper part of the cylinder, thereby facilitating the steam water to better discharge air in the raw water.

In this embodiment, the middle part of the quick-release top plate of the vertical type coarse filter is provided with a vent hole 123, and the vent hole is connected with an automatic exhaust valve 122 through a connecting pipe, so as to exhaust air in raw water in the cylinder, stabilize the inflow rate and ensure the automatic back flushing of the filter to be normal. When the coarse filter is used, water enters the cylinder body through the water inlet pipe, is coarsely filtered through the filter cylinder and is discharged through the water outlet pipe; when air exists in the cylinder, the air is discharged through the automatic exhaust valve, and the condition that the air cannot be filtered is avoided.

In this embodiment, the end of the water inlet pipe of the vertical strainer is provided with a flange and is connected with a water inlet main gate 170 so as to control the on-off of the raw water. The inlet pipe is provided with a mounting hole 132 and a pressure test assembly 160 for detecting the pressure of raw water.

In this embodiment, the side wall of the inlet pipe of the vertical strainer is provided with a branch pipe 131 having an external thread so as to supply other equipment or perform backwashing. In order to realize the connection with the pipeline, the end heads of the water outlet pipes are respectively provided with flange plates and are connected with a bent pipe 190 connected with the rotameter through a quick-release flange 180, and the water inlet filter is connected with the input end of the bent pipe.

In this embodiment, in order to mount the filter cartridge and prevent the filter cartridge from deviating, an annular flange 141 matched with the inner diameter of the cylinder body is arranged at the upper end of the filter cartridge of the vertical type coarse filter, and the lower end of the filter cartridge is supported on the bottom plate through a cushion block 142; or 3 supporting bars 143 are circumferentially installed on the annular flange of the filter cylinder at intervals, the upper ends of the supporting bars are welded with the quick-release top plate, a filter screen 144 is arranged on the circumferential surface of the filter cylinder, and the holes of the filter screen are 3 mm.

In this embodiment, in order to filter the raw water after vertical strainer again, prevent that water from shooting negative pressure generator subassembly and taking place to block up, water inlet filter's structure is the same with vertical filter (refer to fig. 3-7), including a barrel, the quick detach roof is installed through the quick detach flange in the upper end of barrel to realize the quick detach of quick detach roof, and take out a section of thick bamboo through the quick detach roof and wash, overcome current strainer or water inlet filter and be unfavorable for straining a abluent defect. The lower end of the cylinder is covered with a bottom plate, the upper part of the cylinder is provided with a water inlet pipe connected with a water supply pipe, the lower side wall of the cylinder is provided with a water outlet port connected with a water outlet pipe, and a filter cylinder is arranged between the water inlet pipe and the water outlet pipe in the cylinder so as to filter raw water again through the filter cylinder, thereby preventing water from shooting a negative pressure generator component to block and overcoming the defect that the existing strainer is not beneficial to cleaning the filter cylinder.

In this embodiment, the water outlet pipe of the water inlet filter is connected with the water jet negative pressure generator assembly through the quick-release flange and the bent pipe. The water outlet end of the water inlet pipe is provided with an oblique upward guide plate so as to guide raw water to flow upwards into the upper part of the cylinder body, so that the raw water flows downwards from the upper part of the cylinder body, and steam and water are facilitated to better discharge air in the raw water.

In this embodiment, for further exhaust air, the middle part of the quick detach roof of water filter is provided with the air vent, the air vent is connected with air relief valve through the takeover to with the air escape in the former aquatic of barrel, make the flow of intaking stable and guarantee that the automatic back flush of filter is normal.

In the embodiment, in order to realize the installation of the filter cylinder and prevent the filter cylinder from deviating, the upper end of the filter cylinder of the water inlet filter is provided with an annular flange matched with the inner diameter of the cylinder body, and the lower end of the filter cylinder is supported on the bottom plate through the cushion block; or 3 supporting bars are installed on the annular flange of the filter cylinder at intervals along the circumferential direction, the upper ends of the supporting bars are welded with the quick-release top plate, a filter screen is arranged on the circumferential surface of the filter cylinder, and the holes of the filter screen are 3 mm.

In this embodiment, the negative pressure generator assembly comprises a water ejector 510 made of plastic. In order to prolong the service life and prevent rusting, the water injector is wrapped by a stainless steel shell 520. An insulating layer 530 is filled between the stainless steel shell and the outer wall of the water ejector, so that the temperature application range of the water ejector is improved by matching the stainless steel shell and the insulating layer. The water outlet end of the water injector is connected with the input end of the medicine static mixer through a copper gate valve 540 so as to control the on-off of the medicine.

In this embodiment, in order to better install the water ejector, the two ends of the stainless steel shell are respectively provided with through holes for the water inlet end 511 and the water outlet end 512 of the water ejector to penetrate out, and the side wall of the stainless steel shell is provided with an installation hole for the medicine adding port 513 of the water ejector to penetrate out.

In this embodiment, in order to improve the strength of the water ejector, the outer wall of the water ejector is provided with axial reinforcing ribs 514 at intervals along the circumferential direction.

Raw water enters the water ejector through the water inlet end, and the medicament/medicinal powder is sucked into the water ejector through the negative pressure generated at the medicament port to be mixed with the raw water and then is output through the water outlet end. Because most of the existing water ejectors for sucking medicaments under negative pressure are made of plastic products, when the water ejectors made of plastic are used at low temperature, particularly in areas with large day-night temperature difference, the water ejectors are easy to break after water in the water ejectors is frozen, and the water ejectors cannot work normally. The water jet negative pressure generator assembly effectively overcomes the condition, and improves the low-temperature application range of the water jet device.

In this embodiment, in order to meter the input drug, the dosing flow meter device includes a plate-type flow meter 610, which is an organic plate glass-type flow meter. The plate flowmeter is externally provided with a stainless steel shell 611 which exposes the scale surface of the plate flowmeter, thereby preventing the shell from rusting and prolonging the service life. And the thermal insulation material 612 is filled between the stainless steel shell and the plate-type flowmeter so as to improve the temperature use range of the plate-type flowmeter and reduce the fracture probability of the plate-type flowmeter. The upper and lower parts of the stainless steel shell are respectively provided with a mounting hole 613 corresponding to the water inlet and the water outlet of the plate-type flowmeter. The water inlet of the plate-type flowmeter is connected with a loose joint check valve 620 connected with a dosing water level constant device through an elbow pipe, so that the backflow of the medicament is prevented.

In this embodiment, plate flowmeter's delivery port is connected with drain pipe 630 through the adapter, the drain pipe is the PVC pipe, the drain pipe is connected with the medicine feed end of water-jet negative pressure generator subassembly.

In this embodiment, in order to fully mix the medicament with the raw water, the static mixer includes a vertical pipe 310, and flanges 311 are respectively disposed at two ends of the pipe so as to be connected to other pipes. The mixing unit assembly 320 used for enabling fluid to form positive and negative rotational flow is arranged in the pipe body along the axial direction, a dosing pipe 330 radially penetrating the pipe body is arranged at the water inlet end of the pipe body, and external threads connected with a copper gate valve are arranged at the input end of the dosing pipe.

In this embodiment, for better completion medicament input, reduce the impact to the body lateral wall, the output that the dosing pipe stretched into in the body is provided with the inclined plane 331 towards the body play water end.

In this embodiment, the mixing unit assembly includes a plurality of groups of X-shaped unit assemblies 321, each of the X-shaped unit assemblies is formed by two oblique arc-shaped unit pieces 322 which are arranged in front and behind each other and have arc-shaped sides facing outward, and the upper and lower ends of the two adjacent left and right X-shaped unit assemblies are fixedly connected to form a plurality of X-shaped unit assemblies which are continuously and fixedly connected to each other, so that different fluids can flow in a forward and backward rotation manner in a three-dimensional space formed by the mixing unit assemblies and are respectively dispersed and mixed with each other. See fig. 14.

In this embodiment, notches 323 for fitting are formed in the middle of the chord length edges of the arc-shaped unit pieces, and the notches of the front and rear arc-shaped unit pieces are fitted and welded, so that the front and rear arc-shaped unit pieces are welded to form an included angle 324 of 90 degrees.

When the medicine static mixer is used, raw water is input from the input end of the pipe body, and the medicine is introduced into the pipe body through the medicine adding pipe and flows with the raw water in a forward and reverse rotation mode in a three-dimensional space formed by the mixing unit assembly, and the medicine and the raw water are dispersed and mixed with each other, so that the medicine and the raw water are mixed more uniformly, and the mixing effect is improved.

An assembling method of a low-potential negative-pressure dosing and mixing device comprises the following steps:

(1) a water inlet main gate is arranged on the water inlet end of the vertical coarse filter, and a pressure testing component is arranged on the water inlet pipe;

(2) a water outlet pipe of the vertical coarse filter is connected with a bent pipe with an upward output end through a quick-release flange, a rotameter is vertically installed at the output end of the bent pipe, and a medicine static mixer is vertically installed at the output end of the rotameter through a gate valve and the quick-release flange;

(3) a water inlet filter is arranged on a branch pipe of the elbow pipe, a water jet negative pressure generator assembly is arranged at the output end of the water inlet filter through a quick-release flange, and a dosing flow metering device is arranged at the dosing end of the water jet negative pressure generator assembly;

(4) and a copper gate valve is arranged at the water outlet end of the water jet negative pressure generator assembly, and the output end of the copper gate valve is connected with the side wall of the output end of the gate valve.

It will be apparent to those skilled in the art that the above embodiments are merely preferred embodiments of the present invention, and it is not necessary to create any inventive effort in designing different types of low potential negative pressure medicated mixing devices, and all equivalent changes, modifications, substitutions and alterations made herein without departing from the spirit and scope of the present invention are to be considered as within the scope of the appended claims.