A fixed-clearance conical cavity device

Abstract

The present invention discloses a fixed-gap conical cavity device, which comprises a valve body and a valve core with an inner cavity, a feed channel and a discharge channel. The valve core includes an upper core body and a lower core body. The upper core body includes a main body section and a mating section. The lower core body has a frustum-shaped cavity with a gradually decreasing inner diameter from top to bottom and a fluid channel. A flow channel is formed at the upper end of the main body section, and a homogeneous cavity is formed between the main body section, the inner wall of the inner cavity and the lower core body. The mating section is frustum-shaped and has a plurality of fitting portions protruding from its surface at circumferential intervals. The mating section is inserted into the frustum-shaped cavity, and the fitting portions are in close contact with the inner wall of the frustum-shaped cavity, forming a plurality of independent cavity gaps therebetween. From top to bottom, the feed channel, the flow channel, the homogeneous cavity, the cavity gap, the fluid channel and the discharge channel are sequentially connected. The structure of the present invention is simple, the processing cost is low, the processing efficiency is high, and the processing effect is good. It is suitable for use on a high-pressure homogenizer for the dispersion and crushing of difficult-to-disperse materials, etc.

Description

Technical Field

[0001] The invention relates to the technical field of high-pressure homogenization, and in particular to a fixed-gap conical cavity device. Background Art

[0002] At present, the high-pressure homogenizer is also called "high-pressure fluid nano-homogenizer". It uses the crankshaft connecting rod structure as the power and forms a plunger pump with the high-pressure module to continuously transport the sample to the homogenizing valve. Due to the special structure of the homogenizing valve, three effects will be produced: cavitation effect, explosion effect, and shear effect, thereby achieving the effects of emulsification, homogenization, and dispersion.

[0003] At the same time, with the application of high-pressure homogenizers in the crushing and exfoliation of graphene, there are two common types: T-type interactive chamber high-pressure homogenizer and Y-type interactive chamber high-pressure homogenizer.

[0004] like Figure 1 As shown, a T-type interactive cavity high-pressure homogenizer includes a fixed sleeve 1′, a steel ring 2′, a floating block 3′ and a spring 4′, wherein a fluid channel is formed inside the fixed sleeve 1′, and the floating block 3′ closes the discharge port of the fluid channel under the elastic resistance of the spring 4′. When the high-pressure fluid material enters from the feed port of the fluid channel and overcomes the elastic force, the floating block 3′ moves and a gap is generated between the fixed sleeve 1′. At this time, the fluid channel and the internal channel of the steel ring 2′ are connected to form a T-type interactive cavity. Therefore, the fluid material will be ejected radially along the gap and hit the steel ring 2′, thereby crushing and peeling the material. Although the T-type interactive cavity high-pressure homogenizer has a large output (up to 2000 liters / hour) and the preparation of the interactive cavity is relatively easy, it is also the main type currently used in China, but its use pressure should not be too large (generally less than 100MPa), otherwise the steel ring will be quickly punctured and impurities will be generated. Therefore, its crushing effect is limited by pressure.

[0005] like Figure 2As shown, the Y-type interactive cavity type high-pressure homogenizer includes a body forming a fluid channel, wherein the fluid channel includes a feed channel a′, a discharge channel b′, and a diversion channel c′ located on the same center line, wherein the diversion channel c′ connects the feed channel a′ and the discharge channel b′ respectively, and forms a Y-type interactive cavity, and two streams of high-pressure fluid materials collide at a certain angle (this angle can be equal to zero) through the micropores at high speed, thereby crushing the materials. Because the materials collide with each other, it can withstand greater pressure. At the same time, the diameter of the micropores of the Y-type interactive cavity is very small, generally 0.1mm, and the maximum is 0.4mm, so it is also called a microjet, and its output is relatively low. At present, the largest output of microjet in the world is about 500 liters / hour. In this way, the Y-type interactive cavity type high-pressure homogenizer not only has a low output, but also uses core parts with high hardness and high processing precision, and the production cost is also very high (generally, the price of a Y-type high-pressure homogenizer with the same output equipment is several times higher than that of a T-type high-pressure homogenizer).

[0006] In addition, in the above-mentioned T-type interactive chamber high-pressure homogenizer and Y-type interactive chamber high-pressure homogenizer, no pre-treatment of the fluid is involved. For example, the homogenization and sufficient mixing of the fluid make the particle distribution in the fluid relatively uniform. In this way, if the fluid collides directly, the collision force generated between the particles will be different due to the uneven distribution of the particles in the fluid, thus greatly affecting the crushing and peeling effect of the particles. Summary of the invention

[0007] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide an improved cavity device suitable for a high-pressure homogenizer. The cavity device homogenizes the fluid and then performs high-pressure collisions between multiple streams of fluid, which not only greatly increases the fluid micro-jet flow rate and homogenization effect, but also has a simple structure and can withstand greater pressure. At the same time, its processing requirements and production costs are relatively low.

[0008] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows:

[0009] A constant-gap conical cavity device, comprising a valve body and a valve core, wherein the valve body is provided with an inner cavity, a feed channel for fluid to enter the inner cavity, and a discharge channel for fluid to be discharged, the valve core comprises an upper core body and a lower core body arranged in the inner cavity, the cavity device further comprises a pressing member for tightly fitting the upper core body with the lower core body, the upper core body comprises a main body section extending in the up-down direction and a matching section located below the main body section, wherein a flow channel extending from the center to the periphery is formed at the upper end portion of the main body section, and a homogeneous cavity is formed between the periphery of the main body section, the inner wall of the inner cavity, and the lower core body; the matching section is a truncated cone shape that gradually tapers from top to bottom, and a plurality of protruding portions on its surface are distributed at intervals in the circumferential direction of the matching section. The fitting parts extend from the upper end of the fitting section to the lower end of the fitting section; the lower core body has a conical cavity located at the upper part thereof and the inner diameter of which gradually decreases from top to bottom, and a fluid channel located below the conical cavity; the fitting section of the upper core body is inserted into the conical cavity, and the fitting part on the fitting section is tightly fitted with the inner wall of the conical cavity, so that a plurality of independent cavity gaps extending obliquely in the up-and-down directions are formed between the inner wall of the conical cavity and the fitting section; from top to bottom, the feed channel, the flow channel, the homogenizing cavity, the cavity gap, the fluid channel and the discharge channel are connected in sequence, and a plurality of fluids ejected through the lower end openings of the plurality of cavity gaps collide with each other at the upper end center of the fluid channel.

[0010] According to a further embodiment of the present invention, the center lines of the main body section, the matching section, and the frustum-shaped cavity coincide with each other, and the plurality of cavity gaps are evenly spaced around the center line coincident with the main body section, the matching section, and the frustum-shaped cavity. Therefore, the fluid ejected from the cavity gap can collide more evenly at the center of the upper end of the fluid channel.

[0011] In some embodiments of the present invention, at the cavity gap, the vertical distance between the outer surface of the matching segment and the inner wall of the frustum-shaped cavity is equal, wherein the optimal vertical distance δ between the outer surface of the matching segment and the inner wall of the frustum-shaped cavity is 0.02-0.1 mm. Under the limitation of this vertical distance, the fluid in the homogenous cavity can be pressurized and ejected, and the pressure of multiple fluids ejected can be kept the same, so as to optimally implement the center collision.

[0012] Furthermore, the cone angle β formed by the frustum-shaped cavity of the present invention is not particularly limited, and can be, for example, 80° to 180°. In order to further improve the processing effects of emulsification, homogenization, and dispersion of fluid particles, the cone angle β formed by the frustum-shaped cavity is preferably 85° to 150°. Specifically, the cone angle β formed by the frustum-shaped cavity can be 88° to 92° (right angle), 95° to 105°, or 110° to 150°. In the processing experiment of the graphene-containing slurry, it has been confirmed that when the cone angle formed by the frustum-shaped cavity is 88° to 110°, it has a better processing effect than other angles.

[0013] According to a further embodiment of the present invention, the number of the abutting parts is 2, 3, 4, 5 or 6, but considering the stability of the contact and the output of the fluid micro jet, in general, the number of the abutting parts is 3, and the 3 abutting parts are evenly spaced and distributed along the circumference of the matching section, wherein each abutting part gradually narrows from top to bottom. In other words, the more the number of abutting parts, the more the number of strands the fluid is divided into, and the setting of the abutting parts gradually narrowing from top to bottom can increase the instantaneous power of the fluid ejection, so that it collides under a higher pressure.

[0014] In some embodiments of the present invention, there are 1, 2, 3, 4, 5 or 6 flow channels. When there are multiple flow channels, the multiple flow channels are evenly distributed in the circumferential direction of the main body section. In this way, the fluid can be evenly dispersed from the middle to the surroundings, thereby increasing the homogenization and mixing effect of the fluid in the homogenization cavity, making the particle distribution in the fluid relatively more uniform.

[0015] The treatment effect of the device can be further optimized by optimizing the design of one or more of the aperture, height, and the formed taper. In some specific and preferred embodiments of the present invention, the outer diameter of the main body section is greater than or equal to the outer diameter of the upper end of the mating section. The outer diameter of the lower end of the mating section is less than or equal to the inner diameter of the bottom of the frustum-shaped cavity. In some other embodiments, the outer diameter of the upper end of the mating section is more than 2 times the outer diameter of the lower end of the mating section, preferably more than 3 times. In some specific embodiments, the outer diameter of the upper end of the mating section is 2 to 6 times the outer diameter of the lower end of the mating section. The height of the mating section is less than the height of the frustum-shaped cavity.

[0016] According to a further embodiment of the present invention, the valve body further comprises a bottom plug and a gasket installed at the lower part of the inner cavity, the bottom plug and the gasket cooperate to abut against the lower part of the lower core body, and the upper part of the lower core body seals against the inner wall of the inner cavity, wherein the holes inside the bottom plug and the gasket are connected to the fluid channel and constitute a discharge channel. Here, the arrangement of the gasket and the bottom plug makes it very convenient to assemble the core body of the valve core. In some specific embodiments, the bottom plug is detachably connected to the lower part of the inner cavity by threaded cooperation.

[0017] Furthermore, in order to increase the sealing performance between the lower core and the inner cavity, a lower core may be used whose upper outer contour is a truncated cone with an outer diameter gradually increasing from top to bottom, and a conical surface is formed on the inner cavity to closely match the outer surface of the upper portion of the lower core. Specifically, the cone angle γ of the conical surface may be 50° to 120°.

[0018] According to a further embodiment of the present invention, the fluid channel includes a cylindrical direct current channel extending vertically downward from the bottom of the frustum-shaped cavity, and a conical expansion channel extending downward from the bottom of the direct current channel and with a gradually increasing aperture, the conical expansion channel is connected to one end of the discharge channel, wherein the fluid ejected from the gap of the cavity collides at the center of the cylindrical direct current channel.

[0019] In some specific embodiments, the cone angle θ formed by the conical expansion channel is 50°~120°; and the aperture of the straight flow channel is 0.2~2 mm.

[0020] According to a further embodiment of the present invention, the valve body forms an installation cavity above the inner cavity, and the pressure piece includes a compression spring whose upper and lower ends respectively abut against the top of the installation cavity and the upper end of the main body section; the feed channel also includes a feed connector installed above the installation cavity, and the feed connector is connected to the flow channel on the main body section through the installation cavity.

[0021] In addition, the center lines of the feed channel, the installation cavity, the flow channel, the homogenizing cavity, the frustum-shaped cavity, the fluid channel, and the discharge channel are arranged to coincide with each other, so that the cavitation effect, the explosion effect, and the shearing effect produced by the fluid can achieve the best emulsification, homogenization, and dispersion effects. Due to the implementation of the above technical solutions, the present invention has the following advantages compared with the prior art:

[0022] The structure of the existing cavity device cannot simultaneously meet the requirements of high pressure, high fluid microjet output, uniform distribution of particles in the fluid, reduced processing requirements, and reduced costs. The present invention cleverly solves various shortcomings of the existing structure by overall designing the structure of the cavity device. With this device, after the fluid enters the cavity device, it first passes through the flow channel to be diverted from the center along the radial direction to the circumference, so that the fluid is fully mixed and homogenized in the homogenization cavity, and then is diverted, guided, and pressurized through multiple cavity gaps with a fixed spacing, and collides at high pressure at the center of the fluid channel along the extension direction of the cavity gap, and then is discharged from the discharge channel after dispersion. Compared with the existing structure, on the one hand, it can not only meet the high-pressure collision of the fluid with uniform particle distribution, but also effectively increase the fluid microjet flow rate, and also greatly improve the particle crushing and stripping efficiency and effect in the fluid; on the other hand, there is no frontal impact between the fluid and the valve core and the valve body, which meets the requirements of high-pressure working conditions while reducing the requirements of core components. Since the requirements of core components are reduced, the material cost, processing cost and use cost can be significantly reduced; thirdly, the structure of the present invention is simple, and there is no need to set a valve stem and its corresponding control valve stem mechanism, which helps to further reduce costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic cross-sectional view of the structure of a T-shaped interactive chamber high-pressure homogenizer in the background technology;

[0024] Figure 2 It is a schematic cross-sectional view of the structure of a Y-shaped interactive chamber high-pressure homogenizer in the background technology;

[0025] Figure 3 It is a schematic cross-sectional view of the structure of the chamber device in a specific embodiment of the present invention;

[0026] Figure 4 for Figure 3 A magnified schematic diagram of the local structure (the arrow indicates the direction of fluid flow);

[0027] Figure 5 for Figure 4 A magnified schematic diagram of the local structure;

[0028] Figure 6 for Figure 3 A half-section enlarged schematic diagram of the middle and upper core;

[0029] Figure 7 for Figure 3 An enlarged schematic diagram of the top view of the middle and upper core;

[0030] Figure 8 for Figure 3 An enlarged schematic diagram of the upper middle core viewed from above;

[0031] Fig. 9 for Figure 3 A half-section enlarged schematic diagram of the middle and lower core;

[0032] Wherein: 1. valve body; 10. inner cavity; 10a. installation cavity; 11. feed channel; 12. discharge channel; 13. bottom plug; 14. gasket; 15. feed connector;

[0033] 2. Valve core; 20. Upper core body; 200. Main body section; 201. Fitting section; b. Fitting portion; 21. Lower core body; 210. Cone-shaped cavity; 211. Fluid channel; c. Direct flow channel; d. Conical expansion channel; 3. Pressure piece; s. Flow channel; t. Homogenizing cavity; X. Cavity gap; 1′, fixed sleeve; 2′, steel ring; 3′, floating block; 4′, spring; a′, inlet channel; b′, outlet channel; c′, diversion channel. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0035] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0037] In the present invention, unless otherwise clearly defined and specified, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In the invention, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0039] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0040] like Figures 3 to 9As shown, this embodiment provides a fixed-gap conical cavity device that is particularly suitable for, but not limited to, a high-pressure homogenizer. The cavity device mainly includes a valve body 1, a valve core 2, and a pressure piece 3, wherein the valve body 1 is provided with an inner cavity 10, a mounting cavity 10a, a feed channel 11 for fluid to enter the inner cavity 10, and a discharge channel 12 for fluid to be discharged, the inner cavity 10 is located in the middle of the valve body 1, the valve core 2 is installed therein, the mounting cavity 10a is located above the inner cavity 10, and the pressure piece 3 is installed in the mounting cavity 10a.

[0041] Specifically, the valve core 2 includes an upper core body 20 and a lower core body 21, wherein the upper core body 20 includes a main body section 200 extending in the up-down direction and a mating section 201 located below the main body section 200; the lower core body 21 has a frustum-shaped cavity 210 located at its upper part and with an inner diameter gradually decreasing from top to bottom, and a fluid channel 211 located below the frustum-shaped cavity 210, and the fluid channel 211 includes a cylindrical direct current channel c extending vertically downward from the bottom of the frustum-shaped cavity 210, and a conical expansion channel d extending downward from the bottom of the direct current channel c and with an aperture gradually increasing.

[0042] In this example, the main section 200 of the upper core body 20 is cylindrical, and a flow channel s extending from the center to the periphery is formed at the upper end, wherein there are four flow channels s and they are distributed in a "cross shape". At the same time, a homogeneous cavity t is formed between the periphery of the main section 200, the inner wall of the inner cavity 10, and the frustum-shaped cavity 210 of the lower core body 21; the mating section 201 of the upper core body 20 is a frustum-shaped cone that tapers gradually from top to bottom, and the mating section 201 has three fitting portions b protruding from its surface distributed at circumferential intervals, and each fitting portion b extends from the upper end of the mating section 201 to the lower end of the mating section 201, and each fitting portion b gradually narrows from top to bottom. The mating section 201 of the upper core body 20 is inserted into the conical cavity 210 of the lower core body 21, and the fitting portion b on the mating section 201 fits tightly with the inner wall of the conical cavity 210, so that three independent cavity gaps X extending obliquely in the up and down directions are formed between the inner wall of the conical cavity 210 and the mating section 201.

[0043] Furthermore, the center lines of the main section 200, the mating section 201, and the frustum-shaped cavity 210 coincide, and the three cavity gaps X are evenly spaced around the center line of the frustum-shaped cavity 210, wherein at each cavity gap X, the vertical distance between the outer surface of the mating section 201 and the inner wall of the frustum-shaped cavity 210 is equal, and the vertical distance δ can specifically be, for example, 0.05 mm.

[0044] Furthermore, the top of the upper part of the lower core body 21 without forming a frustum-shaped cavity 210 is flat, and the upper outer contour is in the shape of a frustum with an outer diameter gradually increasing from top to bottom. The inner cavity 10 has a conical surface (the cone angle γ is about 60° or other angles) that is tightly matched with the outer surface of the upper part of the lower core body 21. At the same time, a bottom plug 13 and a gasket 14 are also installed in the lower part of the inner cavity 10. The bottom plug 13 and the gasket 14 abut against the bottom of the lower core body 21, so that the lower core body 21 is tightly pressed against the conical surface of the inner cavity 10 from the upper frustum seal.

[0045] In this example, the bottom plug 13 is detachably installed at the lower part of the inner cavity 10 by means of threads, and the bottom plug 13 and the gasket 14 are both provided with a central through hole extending along their height direction, and the central through hole is the discharge channel 12, and the central through hole is connected to the upper conical expansion channel d.

[0046] Further, the pressing member 3 is a compression spring whose upper and lower ends respectively contact the top of the installation cavity 10a and the upper end of the main body section 200. That is, in this example, under the elastic force of the compression spring, the upper core 20 is tightly pressed against the lower core 21, and the two are tightly matched.

[0047] Furthermore, the feed channel 11 includes a feed connector 15 installed above the installation cavity 10a, wherein a feed through hole extending up and down is formed inside the feed connector 15, and the feed through hole is connected with the installation cavity 10a and further connected with the flow channel s on the main section 200 through the installation cavity 10a. From top to bottom, the center lines of the feed connector 15, the installation cavity 10a, the flow channel s, the homogenizing cavity t, the frustum-shaped cavity 210, the fluid channel 211 and the discharge channel 12 coincide with each other.

[0048] As can be seen from the above, with this device, after the fluid enters the cavity device through the feed connector 15, it first passes through the flow channel s to be diverted radially from the center to the surroundings, so that the fluid is fully mixed and homogenized in the homogenization chamber t, and then passes through the three cavity gaps X with a fixed spacing for diversion, guidance, and pressurization, and collides at high pressure at the center of the direct current channel c along the extension direction of the cavity gap X, and then is discharged from the discharge channel 12 after dispersion. Compared with the existing structure, on the one hand, it can not only meet the high-pressure collision of the fluid with uniform particle distribution, but also effectively increase the fluid micro-jet flow rate, and also greatly improve the particle crushing and stripping efficiency and effect in the fluid; on the other hand, there is no frontal impact between the fluid and the valve core and the valve body, which meets the requirements of high-pressure working conditions while reducing the requirements of core components. Since the requirements of core components are reduced, the material cost, processing cost and use cost can be significantly reduced; thirdly, the structure is simple and there is no need to set a valve stem and its corresponding control valve stem mechanism, which helps to further reduce costs.

[0049] Recombination Figures 6 to 9As shown, in a specific example, the outer diameter D of the main body section 200 is equal to the outer diameter D1 of the upper end of the matching section 201, the outer diameter D2 of the lower end of the matching section 201 is smaller than the inner diameter D3 of the bottom of the frustum-shaped cavity 201, wherein D1 is approximately 3.5 times of D2, and the height H1 of the matching section 201 is smaller than the height H2 of the frustum-shaped cavity 210. The aperture Q of the direct flow channel c is equal to the inner diameter D3 of the bottom of the frustum-shaped cavity 201 and is approximately 1 mm, and the cone angle θ formed by the conical expansion channel d is approximately 60°.

[0050] Furthermore, the cone angle β formed by the frustum-shaped cavity 210, the cone angle β formed by the mating section 201, and the cone angle β formed by the three fitting parts b are the same, and the cone angle β will affect the processing effect of the cavity device, and is usually set to a right angle or an obtuse angle. Specifically, the cone angle β can be about 90°, 100°, 110°, 120°, 120°, 140°, 150°, 160°, 170°, etc., wherein when the cone angle β is about 90° or 100°, the effects of crushing and dispersing the material particles are significantly better than other angles. The above describes the typical structure of the cavity device according to the present invention. Accordingly, the improvement of the high-pressure homogenizer of the present invention lies in the structure of the cavity device, and does not involve the improvement of other parts. Therefore, other parts can be implemented with reference to the prior art, and will not be described in detail here.

[0051] The chamber device and the high-pressure homogenizer thereof of the present invention are suitable for homogenizing, dispersing, crushing and other processing of various materials, and are particularly suitable for dispersing, crushing or peeling difficult-to-disperse materials such as graphene.

[0052] Furthermore, the difficult-to-disperse materials include, for example, various common nanomaterials that are difficult to disperse and some materials that are difficult to homogenize or finely pulverize regardless of whether they are nano-sized or not, such as graphene.

[0053] Furthermore, in some specific embodiments, a fluid containing difficult-to-disperse materials is continuously introduced into the cavity device at a pressure of 150-400 MPa by a high-pressure pump for treatment, and the treatment under high pressure can obtain excellent treatment effects.

[0054] Furthermore, in the fluid containing the difficult-to-disperse material, the solid content of the difficult-to-disperse material is not particularly limited and can generally be 2-15%.

[0055] According to the present invention, after one treatment is completed, the material can be introduced into the cavity device for treatment again to further improve the treatment effect. There is no limit to the specific number of treatments, which can be 2 or 3 times.

[0056] In addition, the treatment method has a treatment capacity of 50 to 3000 liters per hour, which can achieve an ideal treatment effect.

[0057] The above detailed description of the present invention is intended to enable persons familiar with the art to understand the contents of the present invention and implement them. It does not limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A constant-gap conical cavity device, comprising a valve body (1) and a valve core (2), wherein the valve body (1) is provided with an inner cavity (10), a feed channel (11) for fluid to enter the inner cavity (10), and a discharge channel (12) for fluid to be discharged. Features: The valve core (2) comprises an upper core body (20) and a lower core body (21) arranged in the inner cavity (10), and the cavity device further comprises a pressing member (3) for tightly fitting the upper core body (20) and the lower core body (21), wherein the upper core body (20) comprises a main body section (200) extending in the up-down direction and a fitting section (201) located below the main body section (200), wherein a flow channel (s) extending from the center to the periphery is formed at the upper end of the main body section (200), and a homogeneous cavity (t) is formed between the periphery of the main body section (200), the inner wall of the inner cavity (10), and the lower core body (21); the fitting section (201) is in the shape of a truncated cone that gradually tapers from top to bottom, and a plurality of fitting portions (b) protruding from the surface of the fitting section (201) are distributed at intervals in the circumferential direction, and each fitting portion (b) extends from the upper end of the fitting section (201) to the inner wall of the fitting section (201). The lower core (21) has a cone-shaped cavity (210) located at its upper part and having an inner diameter that gradually decreases from top to bottom, and a fluid channel (211) located below the cone-shaped cavity (210); the matching section (201) of the upper core (20) is inserted into the cone-shaped cavity (210), and the fitting section (b) on the matching section (201) is tightly fitted with the inner wall of the cone-shaped cavity (210), so that a plurality of independent cavity gaps (X) extending obliquely in the vertical direction are formed between the inner wall of the cone-shaped cavity (210) and the matching section (201); from top to bottom, the feed channel (11), the flow channel (s), the homogenizing cavity (t), the cavity gap (X), the fluid channel (211) and the discharge channel (12) are connected in sequence, and a plurality of fluids ejected through the lower end openings of the plurality of cavity gaps (X) collide with each other at the center of the upper end of the fluid channel (211).

2. The fixed-gap tapered cavity device according to claim 1, Features: The center lines of the main body section (200), the matching section (201), and the frustum-shaped cavity (210) coincide with each other, and a plurality of the cavity gaps (X) are evenly spaced around the center line of the frustum-shaped cavity (210).

3. The fixed-gap tapered cavity device according to claim 1, Features: At the cavity gap (X), the vertical distance (δ) between the outer surface of the matching section and the inner wall of the frustum-shaped cavity (210) is equal.

4. The fixed-gap tapered cavity device according to claim 1, Features: At the cavity gap (X), a vertical distance (δ) between the outer surface of the matching section and the inner wall of the frustum-shaped cavity (210) is 0.02-0.1 mm.

5. The fixed-gap tapered cavity device according to claim 1, Features: The cone angle (β) formed by the frustum-shaped cavity (210) is 80° to 180°.

6. The fixed-gap tapered cavity device according to claim 1, Features: The number of the laminating parts (b) is 2, 3, 4 or more.

7. The fixed-gap tapered cavity device according to claim 1, Features: The plurality of fitting portions (b) are evenly distributed along the circumference of the fitting section (201).

8. The fixed-gap tapered cavity device according to claim 1, Features: The fitting portion (b) gradually narrows from top to bottom.

9. The fixed-gap tapered cavity device according to claim 1, Features: The flow channel (s) may be 1, 2, 3, 4 or more in number. When there are multiple flow channels (s), the multiple flow channels (s) are evenly distributed in the circumferential direction of the main body section (200).

10. The fixed-gap tapered cavity device according to any one of claims 1 to 9, Features: The outer diameter (D) of the main body section (200) is greater than or equal to the outer diameter (D1) of the upper end of the matching section (201), and the outer diameter (D2) of the lower end of the matching section (201) is less than or equal to the inner diameter (D3) of the bottom of the frustum-shaped cavity (210).

11. The fixed-gap tapered cavity device according to any one of claims 1 to 9, Features: The outer diameter (D1) of the upper end of the matching section (201) is more than twice the outer diameter (D2) of the lower end of the matching section (201).

12. The fixed-gap tapered cavity device according to any one of claims 1 to 9, Features: The height (H1) of the matching section (201) is smaller than the height (H2) of the frustum-shaped cavity (210).

13. The fixed-gap tapered cavity device according to claim 1, Features: The valve body (1) further comprises a bottom plug (13) and a gasket (14) installed at the lower part of the inner cavity (10), wherein the bottom plug (13) and the gasket (14) cooperate to abut against the lower part of the lower core body (21), and the upper part of the lower core body (21) seals against the inner wall of the inner cavity (10), wherein the hole inside the bottom plug (13) and the gasket (14) is the discharge channel (12), and the hole is connected to the fluid channel (211).

14. The fixed-gap tapered cavity device according to claim 1 or 13, Features: The fluid channel (211) comprises a cylindrical direct flow channel (c) extending vertically downward from the bottom of the frustum-shaped cavity (210), and a conical expansion channel (d) extending downward from the bottom of the direct flow channel (c) and having a gradually increasing aperture, wherein the conical expansion channel (d) is connected to one end of the discharge channel (12), wherein the fluid ejected from the cavity gap (X) collides at the center of the cylindrical direct flow channel (c).

15. The fixed-gap tapered cavity device according to claim 14, Features: The cone angle (θ) formed by the conical expansion channel (d) is 50° to 120°.

16. The fixed-gap tapered cavity device according to claim 14, Features: The aperture of the direct current channel (c) is 0.2-2 mm.

17. The fixed-gap tapered cavity device according to claim 1, Features: The valve body (1) forms an installation cavity (10a) above the inner cavity (10); the pressing member (3) comprises a compression spring whose upper and lower ends respectively abut against the top of the installation cavity (10a) and the upper end of the main body section (200); the feed channel (11) comprises a feed connector (15) installed above the installation cavity (10a); the feed connector (15) is connected to the flow channel (s) on the main body section (200) through the installation cavity (10a).

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