An acid preparation apparatus

Abstract

This utility model relates to the field of acid preparation technology, specifically disclosing an acid preparation device. The acid preparation device includes a tube body and a spiral baffle. The spiral baffle is disposed in the inner cavity of the tube body and extends spirally around the axis of the tube body. The spiral baffle and the inner wall of the tube body form a spiral channel. The tube body is provided with at least two feed channels at the bottom of the spiral channel and a discharge channel at the top of the spiral channel. The medium entering through the at least two feed channels is mixed through the spiral channel and flows out through the discharge channel. The feed is driven by the pressure of the fluid medium itself or gravity. The spiral channel formed by the spiral baffle forces mixing, eliminating the need for a circulation pump to provide additional power, reducing power consumption and pump wear. The spiral channel forces the inflowing medium to move along the spiral path, generating strong shear force and turbulence, forming fluid disturbance. The geometric constraint of the spiral channel causes the fluid to be divided and recombined multiple times, reducing local concentration unevenness.

Description

Technical Field

[0001] This utility model relates to the field of acid preparation technology, and in particular to an acid preparation device. Background Technology

[0002] In related technologies, acid preparation typically involves mixing concentrated hydrochloric acid and water in a tank and continuously circulating the mixture using a pump to maintain a stable concentration. However, this method relies on a circulating pump, resulting in high energy consumption. The continuous operation of the pump not only increases energy consumption but also increases maintenance costs due to the pump body's prolonged contact with corrosive media, making it prone to damage. Furthermore, the mixing uniformity is insufficient; relying solely on the fluid disturbance of the circulating pump makes it difficult to achieve rapid and thorough mixing, especially under low flow rate or high viscosity conditions, which can easily lead to localized concentration inconsistencies and affect the preparation accuracy. Utility Model Content

[0003] The purpose of this invention is to provide an acid preparation device to solve the problems in related technologies where acid preparation requires continuous operation of a circulating pump, resulting in high energy consumption and uneven mixing.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] This utility model provides an acid preparation device, the acid preparation device comprising:

[0006] tube body;

[0007] A spiral baffle is disposed in the inner cavity of the tube body and extends spirally around the axis of the tube body. The spiral baffle and the inner wall of the tube body form a spiral channel. The tube body is provided with at least two feed channels at the bottom of the spiral channel and a discharge channel at the top of the spiral channel. The medium entering through the at least two feed channels is mixed through the spiral channel and flows out through the discharge channel.

[0008] In one embodiment, the spiral baffle is detachably connected to the tube body.

[0009] In one embodiment, the inner wall of the tube is provided with a threaded groove, and the spiral baffle is threadedly connected to the inner wall of the tube.

[0010] In one embodiment, a heat exchange channel may be provided on the outer wall of the tube and / or inside the tube wall, the heat exchange channel being used to introduce a heat exchange medium, the tube being made of a thermally conductive material, and the heat exchange medium in the heat exchange channel being able to exchange heat with the medium inside the tube.

[0011] In one embodiment, the spiral baffle includes at least two spiral segments arranged along its own axial direction, and any two adjacent spiral segments are detachably connected.

[0012] In one embodiment, the pipe body includes at least two pipe segments arranged along its own axial direction, and any two adjacent pipe segments are detachably connected. The number of spiral segments is the same as that of the pipe segments and their positions are correspondingly arranged.

[0013] In one embodiment, at least a portion of at least two of the spiral segments are rotatable about and move along the axis of the tube body to adjust the relative angle and relative spacing between adjacent spiral segments.

[0014] In one embodiment, a portion of at least two of the spiral segments is a forward spiral, and the other portion of the spiral segments is a reverse spiral.

[0015] In one embodiment, the spiral baffle is provided with a plurality of turbulence protrusions, which are externally disposed on the surface of the spiral baffle.

[0016] In one embodiment, at least two of the feed channels include a first feed channel and a second feed channel. The first feed channel is used for water intake and is arranged along the axis of the pipe body. The flow area of ​​the first feed channel is equal to or greater than the flow area of ​​the pipe body. The second feed channel is used for acid intake and is arranged on the circumferential side of the pipe body. The flow area of ​​the second feed channel is smaller than the flow area of ​​the pipe body.

[0017] The beneficial effects of this utility model are as follows:

[0018] This invention provides an acid preparation device. The device features at least two feed channels at the bottom of a spiral channel, allowing the introduction of the media to be mixed. Feeding is driven by the fluid's own pressure or gravity, and forced mixing occurs through the spiral channel formed by spiral baffles. This eliminates the need for a circulating pump, reducing power consumption and pump wear. The spiral channel forces the media flowing into the at least two feed channels to move along a spiral path, generating strong shear force and turbulence, creating fluid disturbance. The geometric constraints of the spiral channel cause the fluid to be divided and recombined multiple times, reducing localized concentration unevenness. Furthermore, the media flows from the bottom to the top of the spiral channel, gradually overflowing only after filling the bottom section. This design is particularly suitable for low-flow or high-viscosity applications. Uniform mixing can be achieved in a single pass through the spiral channel, eliminating the need for repeated reflux by a circulating pump and improving preparation efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the acid preparation device in an embodiment of the present invention;

[0020] Figure 2This is a schematic diagram showing the location of the heat exchange channel in an embodiment of this utility model.

[0021] In the picture:

[0022] 1. Pipe body; 11. First feed channel; 12. Second feed channel; 13. Discharge channel; 14. Heat exchange flow channel;

[0023] 2. Spiral baffle; 21. Spiral channel. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0025] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0027] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0028] like Figures 1 to 2As shown, this utility model embodiment provides an acid preparation device, which includes a tube body 1 and a spiral baffle 2. The spiral baffle 2 is disposed in the inner cavity of the tube body 1 and extends spirally around the axis of the tube body 1. The spiral baffle 2 and the inner wall of the tube body 1 form a spiral channel 21. The tube body 1 is provided with at least two feed channels at the bottom of the spiral channel 21 and a discharge channel 13 at the top of the spiral channel 21. The medium entering through the at least two feed channels is mixed through the spiral channel 21 and flows out through the discharge channel 13.

[0029] With this configuration, this embodiment provides at least two feed channels at the bottom of the spiral channel 21 for introducing media to be mixed, such as acid and water, respectively. The feed is driven by the pressure of the fluid medium itself or gravity, and forced mixing is achieved through the spiral channel 21 formed by the spiral baffles 2. No additional power is required from the circulating pump, reducing power consumption and pump wear. The spiral channel 21 forces the media flowing into the at least two feed channels to move along the spiral path, generating strong shear force and turbulence, forming fluid disturbance. The geometric constraint of the spiral channel 21 causes the fluid to be divided and recombined multiple times, reducing local concentration unevenness. The medium flows from the bottom to the top of the spiral channel 21, and only gradually overflows after filling the bottom section of the spiral channel 21. This is especially suitable for low flow or high viscosity conditions. Uniform mixing can be completed in a single pass through the spiral channel 21 without the need for repeated reflux by the circulating pump, improving preparation efficiency and solving the problems of continuous operation of the circulating pump, high energy consumption, and uneven mixing in acid preparation in related technologies.

[0030] Optionally, the spiral baffle 2 can be a single integral spiral baffle, or the spiral baffle 2 can be a combination of multiple separate spiral baffles, wherein the multiple separate spiral baffles can be arranged in a spiral shape around the axis of the tube body 1.

[0031] Optionally, the acid preparation device can be used to prepare acid solutions such as dilute hydrochloric acid or dilute sulfuric acid. The appropriate medium can be introduced into each feed channel according to the preparation requirements. For example, when preparing dilute hydrochloric acid, at least one of the two feed channels can be filled with water, and the other with concentrated acid. Of course, in other applications, the acid preparation device can also be used to prepare dilute alkali solutions. Again, the appropriate medium can be introduced into each feed channel according to the preparation requirements; for example, at least one of the two feed channels can be filled with water, and the other with concentrated alkali.

[0032] like Figures 1 to 2As shown, in some embodiments, the spiral baffle 2 is detachably connected to the tube body 1, which facilitates the quick and thorough cleaning of the surface of the spiral baffle 2 and the inner wall of the tube body 1 after the spiral baffle 2 is disassembled from the tube body 1, avoiding blockage or contamination, reducing cleaning dead corners and media residue on the surface of the spiral baffle 2. Furthermore, the spiral baffle 2 can be replaced with different pitches or angles according to formulation needs to adapt to media of different viscosities or concentrations.

[0033] Optionally, the spiral baffle 2 can be detachably connected to the pipe body 1 through one or more combinations of threaded connection, flange connection, snap-fit ​​and slot connection, and magnetic fixation, making disassembly and connection convenient.

[0034] In some embodiments, the inner wall of the pipe body 1 is provided with a threaded groove, and the spiral baffle 2 is threadedly connected to the inner wall of the pipe body 1. With this configuration, the threaded groove is machined on the inner wall of the pipe body 1. The thread depth and pitch of the threaded groove can be machined according to the outer diameter and pitch of the spiral baffle 2, and the two can be made close to the same, which facilitates the smooth screwing of the spiral baffle 2 into the threaded groove. This can improve the fitting accuracy between the spiral baffle 2 and the pipe body 1. Moreover, the outer peripheral edge of the spiral baffle 2 fits with the pipe body 1 through the threaded groove, which can reduce the medium from bypassing the spiral baffle 2 from the outer periphery of the spiral baffle 2, so that the medium flows along a preset spiral path instead of a straight line, which can help ensure the uniformity of the medium mixing by the spiral baffle 2.

[0035] like Figures 1 to 2 As shown, in some embodiments, a heat exchange channel 14 may be provided on the outer wall and / or inside the wall of the tube body 1. The heat exchange channel 14 is used to introduce a heat exchange medium. The tube body 1 is made of a thermally conductive material. The heat exchange medium in the heat exchange channel 14 can exchange heat with the medium inside the tube body 1. A cooling medium can be introduced into the heat exchange channel 14 to cool down the medium inside the tube body 1, which is suitable for the preparation of sulfuric acid. A heating medium can also be introduced into the heat exchange channel 14 to heat or keep the medium inside the tube body 1 warm, which can be selected according to the usage requirements. In this embodiment, by setting the heat exchange channel 14, it is convenient to adjust the temperature of the medium inside the tube body 1 and reduce the situation where the tube body 1 is excessively high or low temperature due to the reaction of the medium.

[0036] In some embodiments, the spiral baffle 2 includes at least two spiral segments arranged along its own axial direction, and any two adjacent spiral segments are detachably connected. The connection method can be, but is not limited to, bolt connection, snap-fit, plug-in or magnetic connection, making disassembly and assembly convenient. By designing the spiral baffle 2 as having at least two detachably connected spiral segments, this embodiment allows the spiral baffle 2 to be lengthened or shortened according to the mixing degree required during the preparation process, simply by adjusting the number of connected spiral segments.

[0037] In some embodiments, the tube body 1 includes at least two tube segments arranged along its own axial direction. Any two adjacent tube segments are detachably connected, and the connection method can be, but is not limited to, bolt connection, snap-fit, plug-in connection, or magnetic connection, making disassembly and assembly convenient. The number of spiral segments and tube segments are the same and their positions correspond. By designing the tube body 1 as at least two detachably connected tube segments, this embodiment allows the tube body 1 to be lengthened or shortened according to the length of the spiral baffle 2. Only the number of connected tube segments needs to be adjusted, making the acid preparation device more portable overall.

[0038] In some embodiments, at least a portion of at least two helical segments are rotatable about the axis of the tube body 1 and move along the axis of the tube body 1 to adjust the relative angle and relative spacing between adjacent helical segments so as to form a transition region between two adjacent helical segments, and the two adjacent helical segments have staggered angles to facilitate the formation of enhanced turbulence in the transition region and improve the mixing uniformity.

[0039] Optionally, the helical segment can be threadedly connected to the pipe body 1 via a threaded groove. By rotating the helical segment, it can rotate and move along the axis of the pipe body 1. Alternatively, when the helical segment is connected to the pipe body 1 in other ways, the helical segment can be connected to the pipe body 1 via a threaded rod at the central axis position, and the helical segment can move along the thread of the threaded rod. Alternatively, the threaded segment can be engaged with the pipe body 1 via a locking pin. When the position of the helical segment needs to be adjusted, simply pull out the locking pin, and the threaded segment can rotate or move freely. Multiple slots for locking pins can be provided on the threaded segment and / or the pipe body 1. After adjustment, the threaded segment and the pipe body 1 can be re-locked by the locking pin.

[0040] In some embodiments, at least one portion of the at least two helical segments is a forward helix, and the other portion is a reverse helix. In this configuration, the forward and reverse threads are relative; the thread segment can be right-handed or left-handed as forward, as long as the at least two helical segments can be configured with different directions of rotation. This allows the reverse helical segment to force the fluid to generate a reverse vortex, colliding with the flow of the forward helical segment to form a high-intensity shear zone, improving mixing uniformity. The combination of forward and reverse helices can disrupt unidirectional laminar flow, preventing slippage of low-viscosity fluids. Furthermore, the forward helical segment can propel the fluid, while the reverse helical segment can locally pressurize it, resulting in a lower overall pressure loss compared to a single-direction helical segment and improved mixing uniformity.

[0041] In some embodiments, the spiral baffle 2 is provided with multiple turbulence protrusions. These protrusions protrude outward from the surface of the spiral baffle 2, meaning that regular or irregularly distributed protrusions are provided on the flow-facing side or both sides of the spiral baffle 2. This generates secondary eddies in the main flow, adding microscopic disturbances to the macroscopic spiral mixing of the fluid, further improving the mixing uniformity. The turbulence protrusions can also disrupt the low-velocity laminar flow near the wall, allowing high-viscosity fluids to undergo full-section mixing. The turbulence protrusions force the fluid medium to continuously change its flow path, resulting in more complete breakage of droplets or bubbles in the medium. This also increases the effective contact area between the spiral baffle 2 and the medium, enhancing the mixing effect.

[0042] In some embodiments, the first feed channel 11 is used for water inlet. The first feed channel 11 is arranged along the axis of the pipe body 1, and the flow area of ​​the first feed channel 11 is equal to or greater than the flow area of ​​the pipe body 1. This ensures that the water flow is dominant, reduces water flow resistance, and forms a high-speed core flow. The second feed channel 12 is used for acid inlet. The second feed channel 12 is arranged on the circumferential side of the pipe body 1, that is, the second feed channel 12 can be inclined at a certain angle against the water flow direction. The flow area of ​​the second feed channel 12 is smaller than the flow area of ​​the pipe body 1. After the acid is injected into the periphery of the water flow through the second feed channel 12, it is sheared and dispersed by the water flow, which can effectively shorten the mixing time, prevent acid concentration, and reduce corrosion and heat release risk points.

[0043] In some other embodiments, the acid preparation device may also include a concentration detection element and at least two flow control valves. The concentration detection element is used to detect the acid concentration at the discharge channel 13, such as an acid-base sensor or a conductivity sensor. The number of flow control valves is the same as that of the feed channels and their positions are correspondingly set. The flow control valves can be used to increase or decrease the medium flow rate at the corresponding feed channel. Based on the actual acid concentration at the discharge channel 13 detected by the concentration detection element and the preset target acid concentration, the opening of the corresponding flow control valve can be adjusted by the user manually or by setting the controller to automatically adjust, thereby adjusting the feed ratio of water and acid, so that the mixed liquid flowing out of the discharge channel 13 meets the target acid concentration standard and maintains a stable concentration.

[0044] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An acid dispensing device, characterized by, The acid preparation device includes: tube body; A spiral baffle is disposed in the inner cavity of the tube body and extends spirally around the axis of the tube body. The spiral baffle and the inner wall of the tube body form a spiral channel. The tube body is provided with at least two feed channels at the bottom of the spiral channel and a discharge channel at the top of the spiral channel. The medium entering through the at least two feed channels is mixed through the spiral channel and flows out through the discharge channel.

2. The acid dispensing apparatus of claim 1, wherein The spiral baffle is detachably connected to the tube body.

3. The acid dispensing device of claim 2, wherein, The inner wall of the tube is provided with a threaded groove, and the spiral baffle is threadedly connected to the inner wall of the tube.

4. The acid dispensing apparatus of claim 1, wherein, A heat exchange channel may be provided on the outer wall of the tube and / or inside the tube wall. The heat exchange channel is used to introduce a heat exchange medium. The tube is made of a thermally conductive material. The heat exchange medium in the heat exchange channel can exchange heat with the medium inside the tube.

5. The acid dispensing apparatus of claim 1, wherein, The spiral baffle includes at least two spiral segments arranged along its own axial direction, and any two adjacent spiral segments are detachably connected.

6. The acid preparation apparatus according to claim 5, characterized in that, The pipe body includes at least two pipe segments arranged along its own axial direction, and any two adjacent pipe segments are detachably connected. The number of spiral segments is the same as that of the pipe segments and their positions are corresponding.

7. The acid dispensing device of claim 6, wherein, At least a portion of at least two of the spiral segments are rotatable about and move along the axis of the tube body to adjust the relative angle and relative spacing between adjacent spiral segments.

8. The acid dispensing device of claim 6, wherein, At least one portion of the two spiral segments is a forward spiral, and the other portion is a reverse spiral.

9. The acid dispensing apparatus of claim 1, wherein, The spiral baffle is provided with multiple turbulence protrusions, which are externally protruding from the surface of the spiral baffle.

10. The acid dispensing apparatus of claim 1, wherein, The at least two feed channels include a first feed channel and a second feed channel. The first feed channel is used for water inlet and is arranged along the axis of the pipe body. The flow area of ​​the first feed channel is equal to or greater than the flow area of ​​the pipe body. The second feed channel is used for acid inlet and is arranged on the circumferential side of the pipe body. The flow area of ​​the second feed channel is smaller than the flow area of ​​the pipe body.

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