CN107456882B - Urea solution metering pump gas-liquid mixing device - Google Patents

Urea solution metering pump gas-liquid mixing device Download PDF

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Publication number
CN107456882B
CN107456882B CN201710826802.1A CN201710826802A CN107456882B CN 107456882 B CN107456882 B CN 107456882B CN 201710826802 A CN201710826802 A CN 201710826802A CN 107456882 B CN107456882 B CN 107456882B
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China
Prior art keywords
liquid
gas
inlet
air
way valve
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CN201710826802.1A
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CN107456882A (en
Inventor
温任林
易军
温伟威
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Wuxi Weifu Lida Catalytic Converter Co Ltd
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Wuxi Weifu Lida Catalytic Converter Co Ltd
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Priority to CN201710826802.1A priority Critical patent/CN107456882B/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING
    • B01F3/00Mixing, e.g. dispersing, emulsifying, according to the phases to be mixed
    • B01F3/04Mixing, e.g. dispersing, emulsifying, according to the phases to be mixed gases or vapours with liquids
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING
    • B01F15/00Accessories for mixers ; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F15/02Feed or discharge mechanisms
    • B01F15/0201Feed mechanisms
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING
    • B01F15/00Accessories for mixers ; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F15/02Feed or discharge mechanisms
    • B01F15/0201Feed mechanisms
    • B01F15/0227Feed mechanisms characterized by the means for feeding the components to the mixer
    • B01F15/026Feed mechanisms characterized by the means for feeding the components to the mixer using valves, gates, orifices, openings
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING
    • B01F15/00Accessories for mixers ; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F15/02Feed or discharge mechanisms
    • B01F15/0266Discharge mechanism
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING
    • B01F15/00Accessories for mixers ; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F15/02Feed or discharge mechanisms
    • B01F15/0266Discharge mechanism
    • B01F15/0274Discharge mechanism characterized by the means for discharging the components from the mixer
    • B01F15/0292Discharge mechanism characterized by the means for discharging the components from the mixer using valves, gates, orifices, openings
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING
    • B01F5/00Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F5/06Mixers in which the components are pressed together through slits, orifices, or screens; Static mixers; Mixers of the fractal type
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING
    • B01F2215/00Auxiliary or complementary information in relation with mixing
    • B01F2215/0001Field of application of the mixing device
    • B01F2215/0036Mixing chemical components in general, chemical components in order to improve chemical treatment, reactions, independently from the specific application

Abstract

The invention relates to a gas-liquid mixing device of a urea solution metering pump, which comprises a gas-liquid mixing inlet module and a gas-liquid mixing outlet module, wherein the gas-liquid mixing inlet module is connected with the gas-liquid mixing outlet module through a fastener; the gas-liquid mixing outlet module is provided with a gas channel, a liquid channel, a gas-liquid mixing cavity and a gas-liquid mixing joint; through the matching of the structures, the liquid and the gas are uniformly mixed and atomized to form gas-liquid mixed gas. The invention has simple structure and effectively prevents urea mixed gas and urea solution from forming urea crystals near the valve rod of the one-way valve.

Description

Urea solution metering pump gas-liquid mixing device
Technical Field
The invention relates to a mixing device, in particular to a gas-liquid mixing device of a urea solution metering pump.
Background
A urea solution metering pump gas-liquid mixing device atomizes urea solution by a method of blowing the urea solution by air with certain pressure and forms urea mixed gas. The structure and the process of the gas-liquid mixture are simple, and the cost is low. However, after the gas and the liquid are mixed by the mixing structure, the gas channel through which the mixed gas flows is tortuous, the pore sizes are different, and circulation resistance is formed.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the background technology and provide the gas-liquid mixing device of the urea solution metering pump, which has the advantages of simple and reasonable structure, uniform gas-liquid mixing, convenient assembly and low cost, and can effectively prevent the valve rod from being blocked and blocking the gas channel due to the formation of urea crystals near the valve rod of the one-way valve.
The gas-liquid mixing device of the urea solution metering pump mainly adopts the design idea that a urea gas-liquid mixing structure is far away from the air inlet one-way valve, and when air with certain pressure sweeps the urea solution in the mixing cavity, the urea solution is atomized to form uniform urea mixed gas. And meanwhile, urea mixed gas and urea solution are effectively prevented, and urea crystals and gas channels are blocked near the valve rod of the one-way valve.
According to the technical scheme provided by the invention, the scheme is further improved,
the utility model provides a urea solution measuring pump gas-liquid mixing device which characterized by: the gas-liquid mixing device comprises a gas-liquid mixing inlet module and a gas-liquid mixing outlet module, wherein the gas-liquid mixing inlet module is connected with the gas-liquid mixing outlet module through a fastening piece;
the gas-liquid mixing inlet module is internally provided with a gas inlet one-way valve groove, a liquid inlet one-way valve groove and a gas-liquid sealing groove;
an air inlet one-way valve is arranged in the air inlet one-way valve groove; a liquid inlet check valve is arranged in the liquid inlet check valve groove;
the lower end surface of the gas-liquid mixing inlet module is provided with an air inlet hole and a liquid inlet hole, and the air inlet hole is communicated with the air inlet one-way valve groove; the liquid inlet hole is connected with the liquid inlet one-way valve groove; the gas-liquid sealing groove is positioned at the periphery of the gas inlet one-way valve groove and the liquid inlet one-way valve groove and in the gap between the gas inlet one-way valve groove and the liquid inlet one-way valve groove, and the gas-liquid sealing ring is arranged in the gas-liquid sealing groove;
an air cavity, a liquid cavity, a gas-liquid mixing tank, a gas channel and a liquid channel are formed in the gas-liquid mixing outlet module;
the air cavity is arranged on the lower end face of the gas-liquid mixing outlet module at the position corresponding to the air inlet one-way valve groove and comprises an air cavity groove, an air wall notch, an air channel groove and an air outlet hole;
the middle part of the air cavity is provided with an air wall, both sides of the air wall are distributed with an air channel groove and an air cavity groove, the outside of one end of the air wall is provided with an air outlet, the outside of the other end of the air wall is provided with an air wall gap, and the air outlet is communicated with the vertically arranged air channel;
a liquid cavity groove is formed in the liquid cavity, the liquid cavity groove is arranged on the lower end face of the gas-liquid mixing outlet module at the position corresponding to the liquid inlet one-way valve groove, a liquid outlet hole is formed in the end part of the liquid cavity, and the liquid outlet hole is communicated with a liquid channel which is obliquely arranged;
a gas-liquid partition plate is arranged between the gas cavity groove and the liquid cavity groove and is positioned on the lower end surface of the gas-liquid mixing outlet module;
the gas channel and the liquid channel are communicated to one end of the gas-liquid mixing tank, and the other end of the gas-liquid mixing tank is connected with the joint tank;
a gas-liquid mixing cavity is arranged in the gas-liquid mixing groove, one end of the gas-liquid mixing cavity is connected with the gas channel and the liquid channel, and the other end of the gas-liquid mixing cavity is connected with a gas-liquid mixing joint arranged in the joint groove.
The gas-liquid mixing joint is further improved, a gas-liquid channel is arranged in the gas-liquid mixing joint, and an inlet of the channel is a trumpet-shaped opening.
The air inlet one-way valve comprises an air inlet one-way valve body, a one-way valve body gas passage is formed in the center of the valve body, an air inlet one-way valve rod is arranged in the valve body gas passage, and the valve body and the air inlet one-way valve rod are sealed by arranging a sealing ring;
a spring and a spring seat are sleeved outside the air inlet check valve rod, one end of the spring abuts against the valve body, and the other end of the spring abuts against the spring seat arranged at the lower end of the air inlet check valve rod;
the air inlet check valve rod, the spring and the spring seat are fixed on the valve body through an air inlet snap spring arranged at the bottom end of the spring seat.
The liquid inlet check valve comprises a liquid inlet check valve body, a check valve body liquid channel is formed in the center of the liquid inlet check valve body, a liquid inlet check valve rod is arranged in the valve body liquid channel, and the valve body and the liquid inlet check valve rod are sealed through a sealing ring;
a spring and a spring seat are sleeved outside the liquid inlet one-way valve rod, one end of the spring abuts against the valve body, and the other end of the spring abuts against the spring seat arranged at the lower end of the liquid inlet one-way valve rod;
the liquid inlet check valve rod, the spring and the spring seat are fixed on the valve body through a liquid inlet snap spring arranged at the bottom end of the spring seat.
The further improvement to the above scheme is that the bottom of the gas-liquid mixing joint is connected with the gas-liquid mixing outlet module through threads.
The further improvement to the scheme is that the air inlet check valve and the liquid inlet check valve are both made of stainless steel materials.
The invention has the following advantages:
the urea solution metering pump gas-liquid mixing device is simple and reasonable in structure, uniform in gas-liquid atomization and mixing, convenient to assemble and low in cost, can effectively prevent urea mixed gas and urea solution from forming urea crystals near a one-way valve rod to cause the valve rod to be clamped and block a gas channel, and is an innovation of the existing gas-liquid mixing device. And meanwhile, urea mixed gas and urea solution are effectively prevented, and urea crystals and air passages are blocked near a one-way valve rod.
Drawings
FIG. 1 is a schematic sectional view of an assembled gas-liquid mixing apparatus.
Fig. 2 is a schematic front view of a gas-liquid mixing inlet module.
Fig. 3 is a schematic view of fig. 2 from direction a-a.
Fig. 4 is a schematic front view of the gas-liquid mixing outlet module.
Fig. 5 is a schematic view of fig. 4 from direction B-B.
Fig. 6 is a schematic view of fig. 5 in direction C.
Fig. 7 is a schematic sectional front view of the gas-liquid mixing joint.
Fig. 8 is a front view of the intake check valve.
Fig. 9 is a schematic view from direction D-D of fig. 8.
Fig. 10 is a schematic view of fig. 9 in direction E.
Fig. 11 is a schematic front sectional view of the liquid inlet check valve.
Fig. 12 is a schematic view of fig. 11 in the direction F.
FIG. 13 is a schematic front view of a gas-liquid mixing inlet module assembly.
FIG. 14 is a schematic view taken along the line J-J of FIG. 13.
FIG. 15 is a schematic sectional front view of the gas-liquid mixing outlet module assembly;
shown in the figure: a gas-liquid mixing inlet module 1, a gas inlet check valve groove 1.1, a liquid inlet check valve groove 1.2, a gas-liquid sealing groove 1.3, a gas inlet hole 1.4, a gas inlet hole 1.5, a gas-liquid mixing outlet module 2, a gas-liquid mixing groove 2.1, a gas outlet hole 2.2, a liquid outlet hole 2.3, a gas-liquid partition plate 2.4, a gas cavity groove 2.5, a gas wall 2.6, a gas wall gap 2.7, a gas passage groove 2.8, a liquid cavity groove 2.9, a gas inlet check valve 3, a gas inlet check valve rod 3.1, a gas inlet check valve body 3.2, a gas inlet spring 3.3, a gas inlet spring seat 3.4, a gas inlet sealing ring 3.5, a gas inlet snap spring 3.6, a gas passage 3.7, a liquid inlet check valve 4, a liquid inlet check valve rod 4.1, a liquid inlet check valve body 4.2, a liquid inlet spring seat 4.4, a liquid inlet snap spring seat 4.5, a liquid inlet snap spring 4.6, a liquid inlet snap spring 4.7, a gas-liquid mixing joint 6.1, a gas-liquid inlet check valve cavity, a, screw 11, liquid channel 12, joint groove 13.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1-15: a gas-liquid mixing device of a urea solution metering pump comprises a gas-liquid mixing inlet module and a gas-liquid mixing outlet module, wherein the gas-liquid mixing inlet module is connected with the gas-liquid mixing outlet module through a fastening piece; the fasteners in this application all adopt screw 11 to realize fixed connection.
An air inlet one-way valve groove 1.1, a liquid inlet one-way valve groove 1.2 and an air-liquid sealing groove 1.3 are formed in the air-liquid mixing inlet module;
an air inlet one-way valve 3 is arranged in the air inlet one-way valve groove; a liquid inlet check valve 4 is arranged in the liquid inlet check valve groove;
the lower end face of the gas-liquid mixing inlet module is provided with an air inlet 1.4 and a liquid inlet 1.5, and the air inlet 1.4 is communicated with an air inlet one-way valve groove 1.1; the liquid inlet hole is connected with a liquid inlet one-way valve groove 1.2; the gas-liquid mixing inlet module is characterized in that a gas-liquid sealing groove 1.3 is formed in the upper end face of the gas-liquid mixing inlet module, is positioned around the gas inlet one-way valve groove and the liquid inlet one-way valve groove and in a gap between the gas inlet one-way valve groove and the liquid inlet one-way valve groove, and a gas-liquid sealing ring 5 is arranged in the gas-liquid sealing groove 1.;
an air cavity 7, a liquid cavity 9, a gas-liquid mixing tank 2.1, a gas channel 8 and a liquid channel 12 are formed in the gas-liquid mixing outlet module;
the air cavity 7 is arranged on the lower end face of the gas-liquid mixing outlet module at the position corresponding to the air inlet one-way valve groove 1.1, and the air cavity 7 comprises an air cavity groove, an air wall notch, an air channel groove and an air outlet hole 2.2;
the middle part of the air cavity is provided with an air wall 2.6, the two sides of the air wall 2.6 are distributed with an air channel groove 2.8 and an air cavity groove 2.5, the outside of one end of the air wall is provided with an air outlet 2.2, the outside of the other end of the air wall is provided with an air wall gap 2.7, and the air outlet 2.2 is communicated with the vertically arranged air channel; the air wall is of an arc-shaped structure, and the air in the air cavity passes through the arc-shaped structure of the air wall and then enters the air outlet hole.
A liquid cavity groove 2.9 is formed in the liquid cavity, the liquid cavity groove is arranged on the lower end face of the gas-liquid mixing outlet module at the position corresponding to the liquid inlet one-way valve groove, a liquid outlet hole 2.3 is formed in the end part of the liquid cavity, and the liquid outlet hole 2.3 is communicated with a liquid channel 12 which is obliquely arranged;
a gas-liquid partition plate 2.4 is also arranged between the gas cavity groove and the liquid cavity groove and is positioned on the lower end surface of the gas-liquid mixing outlet module;
the gas channel and the liquid channel are communicated to one end of the gas-liquid mixing tank, and the other end of the gas-liquid mixing tank is connected with the joint tank;
a gas-liquid mixing cavity is arranged in the gas-liquid mixing groove, one end of the gas-liquid mixing cavity is connected with the gas channel and the liquid channel, and the other end of the gas-liquid mixing cavity is connected with a gas-liquid mixing joint 6 arranged in the joint groove.
The air wall is of an arc-shaped structure, and the air in the air cavity passes through the arc-shaped structure of the air wall and then enters the air outlet hole. The setting of gas wall is in order to lengthen the distance between gas-liquid mixing tank and the check valve that admits air, keeps apart venthole 2.2 and the check valve that admits air simultaneously, prevents that urea gas mixture and the urea liquid drop in the gas-liquid mixing tank from scurrying to the check valve that admits air, forms the urea crystallization around the check valve that admits air, the card valve rod of dying.
The gas-liquid mixing joint is further improved, the gas-liquid mixing joint comprises a gas-liquid channel 6.2, and an inlet 6.1 of the channel is a trumpet-shaped opening. The arrangement of the horn-shaped opening enlarges the gas-liquid mixing cavity 10, which is beneficial to the full mixing and flowing of gas and liquid.
The scheme is further improved, the air inlet one-way valve comprises an air inlet one-way valve body, a one-way valve body air passage 3.7 is formed in the center of the valve body, an air inlet one-way valve rod 3.1 is arranged in the valve body air passage, and the valve body and the air inlet one-way valve rod are sealed through a sealing ring 3.5; the sealing ring is arranged to close or open the air passage from the air inlet 1.4 to the air cavity groove 2.5.
A spring 3.3 and a spring seat 3.4 are sleeved outside the air inlet check valve rod, one end of the spring is abutted against the valve body, and the other end of the spring is abutted against the spring seat arranged at the lower end of the air inlet check valve rod; under the action of the pre-compression spring force, the air inlet one-way valve rod drives the air inlet sealing ring 3.5 to seal the air channel 3.7, and the communication of the air channel between the air inlet hole 1.4 and the air cavity groove 2.5 is blocked. When the air inlet pressure is larger than the pre-compression spring force, the air jacks up the air inlet one-way valve rod, and the air inlet hole 1.4 is communicated with the air channel between the air cavity grooves 2.5.
The air inlet check valve rod, the spring and the spring seat are fixed on the valve body through an air inlet snap spring 3.6 arranged at the bottom end of the spring seat.
The liquid inlet one-way valve is further improved by comprising a liquid inlet one-way valve body 4.2, a one-way valve body liquid channel 4.7 is formed in the center of the liquid inlet one-way valve body, a liquid inlet one-way valve rod 4.1 is arranged in the valve body liquid channel, and the valve body and the liquid inlet one-way valve rod are sealed by arranging a sealing ring 4.5;
a spring 4.3 and a spring seat 4.4 are sleeved outside the liquid inlet check valve rod, one end of the spring abuts against the valve body, and the other end of the spring abuts against the spring seat 4.4 arranged at the lower end of the liquid inlet check valve rod;
the liquid inlet check valve rod, the spring and the spring seat are fixed on the valve body through a liquid inlet snap spring 4.6 arranged at the bottom end of the spring seat.
The further improvement to the above scheme is that the bottom of the gas-liquid mixing joint is connected with the gas-liquid mixing outlet module through threads.
The further improvement to the scheme is that the air inlet check valve and the liquid inlet check valve are both made of stainless steel materials. The adoption of stainless steel can avoid the corrosivity of urea solution and prevent the corrosion of the check valve.
The air inlet check valve and the liquid inlet check valve fix the air inlet check valve rod, the liquid inlet check valve rod, the sealing ring, the spring and the spring seat on the air inlet check valve body and the liquid inlet check valve body respectively through the valve snap springs. Under the action of spring force, the check valve sealing rings on the air inlet check valve rod and the liquid inlet check valve rod respectively seal the gas channel and the liquid channel of the check valve body, and the gas channel and the liquid channel are closed. When the air inlet check valve spring seat and the liquid inlet check valve spring seat are under the thrust action, the check valve spring seat pushes the air inlet check valve rod and the liquid inlet check valve rod to move, and the air passage and the liquid passage of the air inlet check valve body and the liquid passage of the liquid inlet check valve body are respectively opened.
The specific implementation mode is as follows:
when the air inlet one-way valve rod is opened, the air inlet hole, the air cavity, the air channel and the air outlet hole of the air-liquid mixing inlet module are communicated with the air-liquid channel of the air-liquid mixing cavity and the air-liquid mixing joint. When the air inlet one-way valve rod is closed, the passage from the air inlet hole to the air-liquid mixing cavity is blocked.
When the liquid inlet one-way valve rod is opened, the liquid inlet hole, the liquid cavity and the liquid outlet hole of the gas-liquid mixing inlet module are communicated with the gas-liquid channel of the gas-liquid mixing cavity and the gas-liquid mixing joint. When the liquid inlet one-way valve rod is closed, the passage from the liquid inlet hole to the gas-liquid mixing cavity is blocked.
The structure of the urea solution metering pump gas-liquid mixing device realizes that liquid and gas are uniformly mixed and atomized to form gas-liquid mixed gas. Namely: when the one-way valve rod of air inlet and the one-way valve rod of feed liquor all opened, the gas that gets into from the inlet port flows through the venthole export, and the liquid that gets into from the feed liquor hole flows through going out liquid hole export, and air and urea solution meet, air sweep urea solution, mix the atomizing and form gas-liquid mixture in gas-liquid mixture intracavity to the gas-liquid passageway through gas-liquid mixture connects flows. When the air inlet one-way valve rod and the liquid inlet one-way valve rod are closed, the urea solution and the air are blocked from entering the gas-liquid mixing cavity, and meanwhile, the gas-liquid mixed gas is prevented from flowing back to the air inlet one-way valve.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.

Claims (6)

1. The utility model provides a urea solution measuring pump gas-liquid mixing device which characterized by: the gas-liquid mixing device comprises a gas-liquid mixing inlet module (1) and a gas-liquid mixing outlet module (2), wherein the gas-liquid mixing inlet module is connected with the gas-liquid mixing outlet module through a fastener;
an air inlet one-way valve groove (1.1), a liquid inlet one-way valve groove (1.2) and an air-liquid sealing groove (1.3) are formed in the air-liquid mixing inlet module;
an air inlet one-way valve (3) is arranged in the air inlet one-way valve groove (1.1); a liquid inlet check valve (4) is arranged in the liquid inlet check valve groove (1.2);
the lower end face of the gas-liquid mixing inlet module (1) is provided with a gas inlet hole (1.4) and a liquid inlet hole (1.5), and the gas inlet hole (1.4) is communicated with a gas inlet one-way valve groove (1.1); the liquid inlet hole (1.5) is connected with the liquid inlet one-way valve groove (1.2); the gas-liquid sealing groove (1.3) is positioned on the upper end surface of the gas-liquid mixing inlet module, around the gas inlet one-way valve groove (1.1) and the liquid inlet one-way valve groove (1.2) and in the gap between the gas inlet one-way valve groove and the liquid inlet one-way valve groove, and the gas-liquid sealing ring (5) is arranged in the gas-liquid sealing groove (1.3);
an air cavity (7), a liquid cavity (9), a gas-liquid mixing tank (2.1), a gas channel (8) and a liquid channel (12) are formed in the gas-liquid mixing outlet module;
the air cavity (7) is arranged on the lower end face of the gas-liquid mixing outlet module at the position corresponding to the air inlet one-way valve groove (1.1), and the air cavity (7) comprises an air cavity groove (2.5), an air wall (2.6), an air wall notch (2.7), an air channel groove (2.8) and an air outlet hole (2.2);
the middle part of the air cavity is provided with an air wall (2.6), both sides of the air wall (2.6) are distributed with an air channel groove (2.8) and an air cavity groove (2.5), the outside of one end of the air wall is provided with an air outlet (2.2), the outside of the other end of the air wall is provided with an air wall gap (2.7), and the air outlet (2.2) is communicated with the vertically arranged air channel (8);
the air outlet hole (2.2) and the air inlet one-way valve (3) are arranged at two sides of the air wall (2.6);
a liquid cavity groove (2.9) is formed in the liquid cavity, the liquid cavity groove (2.9) is arranged on the lower end face of the gas-liquid mixing outlet module (2) at the position corresponding to the liquid inlet one-way valve groove, a liquid outlet hole (2.3) is formed in the end part of the liquid cavity, and the liquid outlet hole (2.3) is communicated with a liquid channel (12) which is obliquely arranged;
a gas-liquid partition plate (2.4) is also arranged between the gas cavity and the liquid cavity, and the gas-liquid partition plate (2.4) is positioned on the lower end surface of the gas-liquid mixing outlet module;
the gas channel and the liquid channel are communicated to one end of a gas-liquid mixing tank (2.1), and the other end of the gas-liquid mixing tank (2.1) is connected with a joint tank (13);
a gas-liquid mixing cavity (10) is arranged in the gas-liquid mixing groove (2.1), one end of the gas-liquid mixing cavity (10) is connected with the gas channel and the liquid channel, and the other end of the gas-liquid mixing cavity is connected with a gas-liquid mixing joint (6) arranged in the joint groove (13).
2. A urea solution metering pump gas-liquid mixing device as set forth in claim 1, characterized in that:
the gas-liquid mixing joint (6) comprises a gas-liquid channel (6.2), and an inlet (6.1) of the channel is a horn-shaped opening.
3. A urea solution metering pump gas-liquid mixing device according to claim 1 or 2, characterized in that:
the air inlet one-way valve comprises an air inlet one-way valve body, a one-way valve body air passage is formed in the center of the air inlet one-way valve body, an air inlet one-way valve rod is arranged in the one-way valve body air passage, and sealing is realized between the air inlet one-way valve body and the air inlet one-way valve rod through a sealing ring;
a spring and a spring seat are sleeved outside the air inlet check valve rod, one end of the spring abuts against the valve body, and the other end of the spring abuts against the spring seat arranged at the lower end of the air inlet check valve rod;
the air inlet check valve rod, the spring and the spring seat are fixed on the valve body through an air inlet snap spring arranged at the bottom end of the spring seat.
4. A urea solution metering pump gas-liquid mixing device as set forth in claim 1, characterized in that:
the liquid inlet one-way valve comprises a liquid inlet one-way valve body, a one-way valve body liquid channel is formed in the center of the liquid inlet one-way valve body, a liquid inlet one-way valve rod is arranged in the one-way valve body liquid channel, and sealing is achieved between the liquid inlet one-way valve body and the liquid inlet one-way valve rod through a sealing ring;
a spring and a spring seat are sleeved outside the liquid inlet one-way valve rod, one end of the spring abuts against the valve body, and the other end of the spring abuts against the spring seat arranged at the lower end of the liquid inlet one-way valve rod;
the liquid inlet check valve rod, the spring and the spring seat are fixed on the valve body through a liquid inlet snap spring arranged at the bottom end of the spring seat.
5. A urea solution metering pump gas-liquid mixing device as set forth in claim 1, characterized in that: the bottom of the gas-liquid mixing joint is connected with a gas-liquid mixing outlet module through threads.
6. A urea solution metering pump gas-liquid mixing device as set forth in claim 1, characterized in that: the air inlet check valve and the liquid inlet check valve are both made of stainless steel materials.
CN201710826802.1A 2017-09-14 2017-09-14 Urea solution metering pump gas-liquid mixing device Active CN107456882B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710826802.1A CN107456882B (en) 2017-09-14 2017-09-14 Urea solution metering pump gas-liquid mixing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710826802.1A CN107456882B (en) 2017-09-14 2017-09-14 Urea solution metering pump gas-liquid mixing device

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CN107456882A CN107456882A (en) 2017-12-12
CN107456882B true CN107456882B (en) 2021-01-08

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