Water pressure adaptive atomization device

Abstract

This utility model discloses a water pressure adaptive atomizing device, relating to the field of metallurgical flue gas treatment technology. The water pressure adaptive atomizing device includes: a stepped piston tube assembly with a water inlet, a piston assembly, and a stepped tube. A stepped piston chamber is formed within the stepped tube, with the inner diameter of the chamber decreasing sequentially along the water flow direction. The piston assembly is slidably connected to the stepped tube and includes a combined spring, a piston element, and a conical valve core, with the conical valve core forming a sealing pair with the stepped tube; and an atomizing assembly including a venturi tube, a vortex chamber, and an atomizing plate with atomizing holes. This utility model, through the linkage of the stepped piston chamber with decreasing inner diameter, the combined spring, and the conical valve core, allows the conical valve core to dynamically adjust its opening according to water pressure changes, achieving stable water flow under different water pressure conditions. Uniform atomization is then achieved through the venturi tube, the vortex chamber, and the atomizing plate.

Description

Technical Field

[0001] This utility model relates to the field of metallurgical flue gas treatment technology, and in particular to a water pressure adaptive atomizing device. Background Technology

[0002] Currently, with the increasing demand for sophisticated atomization devices in fields such as industrial dust control and dust suppression of industrial equipment, the importance of atomization devices with higher adaptability and precision is becoming increasingly prominent. In industrial scenarios, high-pressure atomization technology is needed to suppress fine particulate matter emissions such as PM2.5. Existing technologies mainly rely on atomization structures with fixed orifice diameters, electronic pressure regulation systems, or traditional mechanical mechanisms.

[0003] However, existing atomizing devices still have many shortcomings. Fixed-aperture structures result in uneven particle size distribution when water pressure fluctuates, leading to decreased dust removal efficiency. Electronic control systems rely on sensors and controllers, which are costly and susceptible to high-temperature and high-dust environments. Traditional mechanical control mechanisms (such as spring valves) have slow response times and cannot achieve real-time matching of pressure and flow, resulting in material waste or increased energy consumption. Furthermore, existing devices have poor adaptability to water quality, lack self-cleaning functions, and are prone to impurity accumulation and clogging of the atomizing orifices during long-term operation.

[0004] Therefore, there is a need for an atomizing device that can adapt to varying water pressure and diverse water quality environments. Summary of the Invention

[0005] The main purpose of this invention is to provide a water pressure adaptive atomizing device, which aims to solve the problem that existing atomizing devices have poor ability to adapt to changes in water pressure and water quality.

[0006] To achieve the above objectives, the water pressure adaptive atomizing device proposed in this utility model includes:

[0007] A stepped piston tube assembly is provided, with an inlet at one end. The stepped piston tube assembly also includes a piston assembly and a stepped tube. A stepped piston cavity is formed inside the stepped tube, and the inner diameter of the stepped piston cavity decreases sequentially along the water flow direction. The piston assembly is slidably connected to the stepped tube and passes through the stepped piston cavity. The piston assembly includes a combined spring, a piston element, and a conical valve core. One end of the combined spring is located inside the stepped piston tube assembly at the end away from the inlet, and the other end of the combined spring is connected to the piston element. The conical valve core is connected to the combined spring through the piston element, and the conical valve core and the stepped tube form a sealing pair.

[0008] An atomizing assembly includes a Venturi tube, a vortex chamber, and an atomizing plate. The Venturi tube is connected to the stepped tube. The vortex chamber has an inlet and an outlet. The inlet is connected to the Venturi tube, and the outlet is connected to the atomizing plate. An atomizing cavity is provided along the axis inside the atomizing plate. The atomizing cavity is connected to the Venturi tube through the vortex chamber. The atomizing plate has atomizing holes.

[0009] Preferably, the stepped pipe is configured as a low-pressure section, a medium-pressure section, and a high-pressure section, which are connected sequentially along the water flow direction. The diameter ratio of the low-pressure section, the medium-pressure section, and the high-pressure section is 4:3:2, and the axial length ratio of the low-pressure section, the medium-pressure section, and the high-pressure section is 1:1.5:2.

[0010] Preferably, the piston component includes a piston rod and a piston plate, the piston rod is connected to the combined spring, the piston plate is connected to the piston rod, the piston plate is slidably connected to the inner wall of the stepped tube, and the conical valve core is fixedly disposed on the side of the piston plate away from the combined spring.

[0011] Preferably, the combined spring includes an outer spring and an inner spring, with the outer spring sleeved on the inner spring. The pre-compression of the outer spring is 2-4 mm, and the stiffness of the outer spring is 50-40 N / mm. The pre-compression of the inner spring is 5-8 mm, and the stiffness of the inner spring is 20-15 N / mm.

[0012] Preferably, the taper angle of the conical valve core is 30~45°, and the length of the conical surface of the conical valve core is 15~18mm.

[0013] Preferably, the surface of the conical valve core is provided with a spiral guide groove, the depth of which is 0.2~0.4mm and the spiral angle is 45°~60°.

[0014] Preferably, the swirl chamber further includes a spiral guide vane, which is disposed inside the swirl chamber around the axial direction of the swirl chamber, and the spiral angle of the spiral guide vane is 60°.

[0015] Preferably, the Venturi tube further includes an elastic ring, and the Venturi tube has a throat section with a diameter of 0.5~2mm. The elastic ring is axially fixed to the throat section of the Venturi tube.

[0016] This invention utilizes a stepped piston chamber with decreasing inner diameter, combined with a spring and a conical valve core, to dynamically adjust the opening of the conical valve core according to water pressure changes. This enables stable water flow under different water pressure conditions, avoiding the problems of coarsening of atomized particles due to excessive pressure or interruption of atomization due to excessively low water pressure. The uniform and stable water flow achieves initial atomization by shearing the liquid through a venturi tube, further breaks down the droplets through a vortex chamber, and finally achieves uniform atomization by controlling the atomization orifice diameter through an atomizing plate. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a cross-sectional structural schematic diagram of a water pressure adaptive atomizing device according to an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of a water pressure adaptive atomizing device according to an embodiment of the present invention;

[0020] Figure 3 for Figure 1 A magnified structural diagram of point A in the middle.

[0021] Explanation of icon numbers:

[0022] label name label name 1000 Water pressure adaptive atomizing device 100 Stepped piston tube assembly 110 Inlet 120 Piston assembly 121 Combined springs 121A outer spring 121B inner spring 122 Piston components 122A Piston rod 122B Piston plate 122C Limiting boss 123 Conical valve core 123A Spiral guide channel 130 Step tube 131 low-pressure section 132 medium pressure section 133 High-voltage section 200 Atomizing components 210 Venturi tube 211 elastic ring 220 cyclone chamber 221 Spiral guide vane 230 Atomizing plate 231 Atomizing hole

[0023] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] It should be noted that all directional indicators in this embodiment are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicator will also change accordingly.

[0026] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0027] In existing technologies, atomizing devices are difficult to cope with usage scenarios where water pressure and water quality are prone to change, and existing technologies have low self-cleaning capabilities and high maintenance costs.

[0028] Based on this, such as Figures 1-3 As shown, this utility model proposes a water pressure adaptive atomizing device 1000, including: a stepped piston tube assembly 100, one end of which is provided with a water inlet 110; the stepped piston tube assembly 100 also includes a piston assembly 120 and a stepped tube 130; the piston assembly 120 passes through the stepped tube 130, and a stepped piston cavity is formed inside the stepped tube 130; the inner diameter of the stepped piston cavity decreases sequentially along the water flow direction; the piston assembly 120 includes a combined spring 121, a piston element 122, and a conical valve core 123; one end of the combined spring 121... The combined spring 121 is connected to the inner wall of the stepped tube 130, and the other end of the combined spring 121 is connected to the piston 122. The conical valve core 123 is fixedly installed on the piston 122 on the side away from the combined spring 121. The conical valve core 123 and the stepped tube 130 form a sealing pair. The atomizing assembly 200 includes a venturi tube 210, a swirl chamber 220, and an atomizing plate 230. The venturi tube 210 is connected to the stepped tube 130, and the atomizing plate 230 is connected to the venturi tube 210 through the swirl chamber 220. The atomizing plate 230 has an atomizing hole 231.

[0029] In this embodiment, the inlet 110 of the water pressure adaptive atomizing device 1000 is connected to an external water source. The external water source is divided into low pressure (water pressure P < 0.2 MPa), medium pressure (water pressure P = 0.2~0.5 MPa), and high pressure (water pressure P > 0.5 MPa) according to different water pressure states. Under different water pressure states, the water flow pushes the conical valve core 123, so that the sealing pair formed by the conical valve core 123 and the stepped piston chamber in the stepped tube 130 can always remain stable. During the movement, the conical valve core 123 compresses the combined spring 121 to realize the water flow for different water pressures, realizes rapid response to water pressure fluctuations, and generates gradient force through area difference to realize overpressure protection and ensure that external water sources with different water pressures can complete uniform atomization. After passing through the stepped piston tube assembly 100, the water flows into the venturi tube 210. The venturi tube 210 accelerates the water flow to form a high-speed jet to shear the water flow. By increasing the water flow velocity, the water flow is initially atomized. The other end of the venturi tube 210 is connected to the vortex chamber 220. The vortex chamber 220 further breaks up the droplets through eddies and makes the droplets more evenly distributed. Finally, the atomized droplets are discharged through multiple atomization holes 231 on the atomizing plate 230.

[0030] In detail, in this embodiment, the inner wall of the venturi tube 210 is made of zirconia ceramic material with a surface roughness Ra≤0.8μm. The atomizing holes 231 on the atomizing plate 230 are arranged in a honeycomb array. The outlet of the atomizing hole 231 is provided with a chamfer with a chamfer angle of 45°, so as to achieve an atomized particle size CV value <15% and a self-cleaning effect.

[0031] In one embodiment, the stepped pipe 130 is configured as a low-pressure section 131, a medium-pressure section 132, and a high-pressure section 133, which are connected sequentially along the water flow direction. The diameter ratio of the low-pressure section 131, the medium-pressure section 132, and the high-pressure section 133 is 4:3:2, and the axial length ratio of the low-pressure section 131, the medium-pressure section 132, and the high-pressure section 133 is 1:1.5:2.

[0032] In this embodiment, the low-pressure section 131 has a length of 20mm and an inner diameter of 20mm; the medium-pressure section 132 has a length of 30mm and an inner diameter of 15mm; the high-pressure section 133 has a length of 40mm and an inner diameter of 10mm; the low-pressure section 131 is connected to the inlet 110, and the external water flows through the inlet 110 into the stepped pipe 130 and then flows through the low-pressure section 131, the medium-pressure section 132, and the high-pressure section 133 in sequence. When low-pressure water flows into the stepped pipe 130, an annular gap is formed between the maximum end of the conical valve core 123 and the inner wall of the low-pressure section 131, ensuring that the water can pass through at a large flow rate and avoiding flow interruption. When medium-pressure water flows into the stepped pipe 130, an annular gap is formed between the conical valve core 123 and the inner wall of the medium-pressure section 132, which is smaller than the gap in the low-pressure section 131, to achieve precise flow regulation and prevent the atomized particles from coarsening due to excessive water pressure and flow velocity. When high-pressure water flows into the stepped pipe 130, a tiny gap is formed between the conical valve core 123 and the inner wall of the high-pressure section 133, creating a throttling effect, further avoiding the problem of coarsening of atomized particles. This ensures that the water pressure adaptive atomizing device 1000 can still achieve a uniform and stable atomization effect even when facing scenarios with changing water pressure.

[0033] In one embodiment, the piston component 122 includes a piston rod 122A and a piston plate 122B. The piston rod 122A is connected to the combined spring 121, the piston plate 122B is connected to the piston rod 122A, and the piston plate 122B is slidably connected to the inner wall of the stepped tube 130. The conical valve core 123 is fixedly disposed on the piston plate 122B on the side away from the combined spring 121.

[0034] In this embodiment, a limiting boss 122C is provided on the piston plate 122B near the combined spring 121. The limiting boss 122C is arranged circumferentially around the piston rod 122A. The limiting boss 122C has a concentric annular boss. The limiting boss 122C is fixedly connected to the combined spring 121 through the boss. The conical valve core 123 is arranged on the piston plate 122B away from the limiting boss 122C. The combined spring 121 is sleeved on the piston rod 122A. When the water pressure of the external water source is too high, the water flow pushes the conical valve core 123, and the piston plate 122B and the piston rod 122A compress the combined spring 121. When the water pressure of the external water source decreases, the spring resistance of the combined spring 121 is greater than the water pressure, pushing the piston rod 122A to move in the opposite direction, driving the conical valve core 123 to move outward.

[0035] In one embodiment, the combined spring 121 includes an outer spring 121A and an inner spring 121B, with the outer spring 121A sleeved on the inner spring 121B. The pre-compression of the outer spring 121A is 2~4mm, and the stiffness of the outer spring 121A is 50~40N / mm. The pre-compression of the inner spring 121B is 5~8mm, and the stiffness of the inner spring 121B is 20~15N / mm.

[0036] In this embodiment, the pre-compression of the outer spring 121A is 2mm, the stiffness of the outer spring 121A is 50N / mm, the pre-compression of the inner spring 121B is 5mm, and the stiffness of the inner spring 121B is 20N / mm. When the water pressure is low, the inner spring 121B contracts alone (the outer spring 121A remains stationary due to its large pre-compression), causing the conical valve core 123 to be in the low-pressure section 131 of the stepped pipe 130, with the conical valve core 123 at its maximum opening, providing a stable supply of low-pressure water. When the water pressure is medium, the outer spring 121A participates in the compression, and the conical valve core 123 slides to the medium-pressure section 132, reducing its opening and shearing the medium-pressure water flow while maintaining the stability of the conical valve core 123. When the water pressure is high, the outer spring 121A and the inner spring 121B compress simultaneously, ensuring that the conical valve core 123 achieves nonlinear displacement suppression through the superposition of the stiffness of the outer spring 121A and the inner spring 121B, preventing the conical valve core 123 from dislodging when the water pressure is too high.

[0037] In one embodiment, the taper angle of the conical valve core 123 is 30~45°, and the length of the conical surface of the conical valve core 123 is 15~18mm.

[0038] In this embodiment, the conical valve core 123 is a single cone machined as a whole, with a taper angle of 35° and a cone surface length of 15mm. The axis of the cone is on the same straight line as the axis of the piston rod 122A, so as to realize the accurate sensing of water flow pressure and accurately transmit the pressure to the outer spring 121A and the inner spring 121B.

[0039] In one embodiment, the surface of the conical valve core 123 is provided with a spiral guide groove 123A, the depth of the spiral guide groove 123A is 0.2~0.4mm, and the spiral angle is 45°~60°.

[0040] In this embodiment, the depth of the spiral guide groove 123A is 0.2mm, the spiral angle is 45°, and there are three spiral guide grooves 123A. The three spiral guide grooves 123A guide the water flow to form a spiral shearing effect and reduce turbulence noise.

[0041] In one embodiment, the swirl chamber 220 further includes a spiral guide vane 221, which is disposed inside the swirl chamber 220 around the axial direction of the swirl chamber 220, and the spiral angle of the spiral guide vane 221 is 60°.

[0042] In this embodiment, the spiral guide vane 221 forces the water flow to form a forced vortex, preventing large-diameter droplets from migrating towards the vortex chamber 220 and causing secondary breakup, while small-diameter droplets are concentrated in the vortex core for stable output. The gaps in the spiral guide vane 221 can also create a boundary layer shear effect, reducing the turbulence intensity.

[0043] In one embodiment, the Venturi tube 210 further includes an elastic ring 211. The Venturi tube 210 has a throat section with a diameter of 0.5~2mm. The elastic ring 211 is fixedly disposed on the throat section of the Venturi tube 210 around the axial direction of the Venturi tube 210.

[0044] In this embodiment, the elastic ring 211 is made of silicone rubber and is interference-fitted with the throat section of the Venturi tube 210. The elastic ring 211 receives radial contraction force. When the water flow is under low pressure, the elastic ring 211 maintains its initial shape. When the water flow is under medium or high pressure, the water pressure is greater than the elastic resistance of the rubber, and the elastic ring 211 contracts, reducing the inner diameter of the throat section of the Venturi tube 210, increasing the flow rate, and enhancing the atomization effect.

[0045] This invention utilizes a stepped piston chamber with decreasing inner diameter, combined with a spring and a conical valve core, to dynamically adjust the opening of the conical valve core according to water pressure changes. This enables stable water delivery under low, medium, and high water pressure conditions. It also avoids the problems of coarsening of atomized particles due to excessive pressure or interruption of atomization due to excessively low water pressure. The uniform and stable water flow achieves initial atomization by shearing the liquid through a venturi tube, further breaks down the droplets through a vortex chamber, and finally achieves uniform atomization by controlling the atomization orifice diameter through an atomizing plate.

[0046] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the concept of the present utility model and using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present utility model.

Claims

1. A water pressure adaptive atomizing device, characterized in that, include: A stepped piston tube assembly is provided, with an inlet at one end. The stepped piston tube assembly also includes a piston assembly and a stepped tube. A stepped piston cavity is formed inside the stepped tube, and the inner diameter of the stepped piston cavity decreases sequentially along the water flow direction. The piston assembly is slidably connected to the stepped tube and passes through the stepped piston cavity. The piston assembly includes a combined spring, a piston element, and a conical valve core. One end of the combined spring is located inside the stepped piston tube assembly at the end away from the inlet, and the other end of the combined spring is connected to the piston element. The conical valve core is connected to the combined spring through the piston element, and the conical valve core and the stepped tube form a sealing pair. An atomizing assembly includes a Venturi tube, a vortex chamber, and an atomizing plate. The Venturi tube is connected to the stepped tube. The vortex chamber has an inlet and an outlet. The inlet is connected to the Venturi tube, and the outlet is connected to the atomizing plate. An atomizing cavity is provided along the axis inside the atomizing plate. The atomizing cavity is connected to the Venturi tube through the vortex chamber. The atomizing plate has atomizing holes.

2. The water pressure adaptive atomizing device as described in claim 1, characterized in that, The stepped pipe is configured as a low-pressure section, a medium-pressure section, and a high-pressure section, which are connected sequentially along the water flow direction. The diameter ratio of the low-pressure section, the medium-pressure section, and the high-pressure section is 4:3:2, and the axial length ratio of the low-pressure section, the medium-pressure section, and the high-pressure section is 1:1.5:

2.

3. The water pressure adaptive atomizing device as described in claim 2, characterized in that, The piston assembly includes a piston rod and a piston plate. The piston rod is connected to the combined spring, the piston plate is connected to the piston rod, and the piston plate is slidably connected to the inner wall of the stepped tube. The conical valve core is fixedly disposed on the piston plate on the side away from the combined spring.

4. The water pressure adaptive atomizing device as described in claim 3, characterized in that, The combined spring includes an outer spring and an inner spring, with the outer spring sleeved on top of the inner spring. The pre-compression of the outer spring is 2-4 mm, and the stiffness of the outer spring is 50-40 N / mm. The pre-compression of the inner spring is 5-8 mm, and the stiffness of the inner spring is 20-15 N / mm.

5. The water pressure adaptive atomizing device as described in claim 4, characterized in that, The taper angle of the conical valve core is 30~45°, and the length of the conical surface of the conical valve core is 15~18mm.

6. The water pressure adaptive atomizing device as described in claim 5, characterized in that, The surface of the conical valve core is provided with a spiral guide groove, the depth of which is 0.2~0.4mm and the spiral angle is 45°~60°.

7. The water pressure adaptive atomizing device as described in claim 1, characterized in that, The swirl chamber further includes a spiral guide vane, which is disposed inside the swirl chamber around the axial direction of the swirl chamber, and the spiral angle of the spiral guide vane is 60°.

8. The water pressure adaptive atomizing device as described in claim 1, characterized in that, The Venturi tube also includes an elastic ring. The Venturi tube has a throat section with a diameter of 0.5~2mm. The elastic ring is axially fixed to the throat section of the Venturi tube.

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