Adjustable high pressure homogenization valve and high pressure homogenizer thereof

Abstract

The application discloses an adjustable high-pressure homogenization valve and a high-pressure homogenizer thereof. The valve seat is provided with a flow guide channel communicated with a homogenization pump set. The valve core is movably arranged at the outlet of the flow guide channel and has a gap for shearing materials between the valve core and the outlet. The valve core is connected with a driving mechanism for driving the valve core away from or close to the outlet. The materials passing through the flow guide channel and the outlet of the flow guide channel impact on the valve core. When passing through the gap, the materials form comprehensive effects such as pressure loss, expansion, explosion, shearing and high-speed impact. The material particles in the liquid are broken into small sizes. According to the requirements of different emulsification degrees and dispersion degrees of the materials, the driving mechanism adjusts the valve core away from or close to the outlet, so that the adaptability of the whole device during use is ensured. The outlet and the valve core are in a concave-convex structure in a nested mode. The concave-convex structure has a plurality of steps which are matched. The materials form multiple impacts between the steps, so that the sufficiency of the material particle breaking is ensured.

Description

Technical Field

[0001] This invention relates to the field of emulsification equipment technology, and in particular to an adjustable high-pressure homogenizing valve and its high-pressure homogenizer. Background Technology

[0002] Wood-based panels are highly absorbent and have poor water resistance. When soaked in water, they swell, leading to warping, mold growth, and other problems. To avoid these issues, manufacturers typically add waterproofing materials during the production process. Currently, the most commonly used waterproofing material in the wood-based panel industry is paraffin wax emulsion. Paraffin wax is a mixture of solid higher alkanes, a non-polar material, insoluble in water, and has low surface energy, making it a good hydrophobic and waterproof material. Paraffin wax emulsion is an oil-in-water emulsion produced by heating paraffin wax, emulsifiers, and water under specific equipment and process conditions. Paraffin wax emulsion waterproofing agents have the advantages of convenient application, easy dispersion, and low dosage. However, the emulsification equipment currently used in the industry requires a high proportion of emulsifier when emulsifying paraffin wax. Because the emulsifier has strong hydrophilicity, it changes the hydrophobic properties of paraffin wax to a certain extent, resulting in technical defects such as extremely fast instantaneous water absorption of the board and large thickness expansion rate after immersion in water for 2 hours. Therefore, there is an urgent need for an emulsification equipment specifically for dispersing paraffin wax to reduce the amount of paraffin wax emulsifier or dispersant used and improve emulsification efficiency and effect. The current emulsification machines have relatively small shear force, resulting in long working time, low work efficiency, and waste of manpower and resources.

[0003] Patent document CN110848405A discloses a homogenizing valve for a high-pressure homogenizer, comprising: a valve seat, a material channel disposed within the valve seat, the inner surface of the outlet end of the material channel being a first conical surface that is smaller at the front and larger at the back, and a stepped surface disposed on the outer circumference of the valve seat at the outlet end of the material channel; an impact ring disposed on the stepped surface of the valve seat; and a valve core disposed on the rear end face of the valve seat, the front end face of the valve core contacting the rear end face of the valve seat with the contact surface between the two located within the impact ring, and the periphery of the front end face of the valve core forming a second conical surface that is smaller at the front and larger at the back. Firstly, by only using the material channel outlet end and the conical surface on the valve core, it cannot create a strong crushing effect on the material particles. Secondly, the crushing gap between the valve seat and the valve core cannot be adjusted adaptively, resulting in a limited range of material crushing. Summary of the Invention

[0004] The purpose of this invention is to provide an adjustable high-pressure homogenizing valve and its high-pressure homogenizer to solve the problems existing in the prior art. By setting a concave-convex structure in combination with a multi-stage stepped structure, the material is subjected to multiple and sufficient impacts between the multi-stage stepped structures to ensure the crushing effect. Furthermore, the drive mechanism can adjust the width of the gap between the valve core and the outlet according to different material properties, so that the material meets the corresponding particle size and distribution requirements, which greatly improves the homogenization production efficiency.

[0005] To achieve the above objectives, the present invention provides the following solution: The present invention provides an adjustable high-pressure homogenizing valve, comprising a valve body having a homogenizing cavity, a valve seat and a valve core fixed in the homogenizing cavity, the valve seat having a flow channel communicating with the homogenizing pump group, the valve core being movably disposed at the outlet of the flow channel, and having a gap for shearing materials between the valve core and the outlet, the valve core being connected to a driving mechanism for driving it away from or towards the outlet, and the outlet and the valve core having a nested concave-convex structure, the concave-convex structure having a multi-stage step that is adapted to each other.

[0006] Preferably, the outer periphery of the slit is surrounded by an impact ring for impacting the material.

[0007] Preferably, the corners of the multi-step structure are inclined, and the inclined surface at the outlet is parallel to the inclined surface of the valve core.

[0008] Preferably, the outlet is generally recessed, and the valve core has a convex structure on the side near the outlet that matches the recessed structure.

[0009] Preferably, the top of the protruding structure is a spherical structure facing the outlet of the flow channel.

[0010] Preferably, the valve core and the homogenizing cavity are in a matching cylindrical structure, and the outer wall of the valve core is threadedly connected to the inner wall of the homogenizing cavity.

[0011] Preferably, the driving mechanism is a handwheel mechanism that is connected to the valve core in a transmission manner.

[0012] Preferably, a planetary gear assembly for increasing the transmission ratio is provided between the handwheel mechanism and the valve core.

[0013] A high-pressure homogenizer is also provided, including a booster pump set disposed outside the homogenization chamber, wherein the booster pump set is connected to the inlet of the material tank and the flow channel, and a high-pressure sealing valve gasket is provided between the booster pump set and the inlet.

[0014] Preferably, it also includes a discharge channel connected to the gap, and the discharge channel is connected to a pressure gauge for monitoring the discharge pressure.

[0015] The present invention achieves the following technical effects compared to the prior art:

[0016] First, the valve seat has a flow channel connected to the homogenizing pump unit. The valve core is movably positioned at the outlet of the flow channel, and there is a gap between it and the outlet for shearing the material. The valve core is connected to a drive mechanism that moves it away from or closer to the outlet. After the material passes through the flow channel and its outlet, it impacts the valve core. When passing through the gap, it forms a combination of effects such as pressure loss, expansion, explosion, shearing, and high-speed impact, which breaks the material particles in the liquid into very small sizes, thereby establishing an ideal emulsion or dispersion. According to the different emulsification and dispersion requirements of the material, the drive mechanism adjusts the valve core to move away from or closer to the outlet to form a corresponding degree of crushing effect, ensuring the adaptability of the entire device during use. Moreover, the outlet and the valve core have a nested concave-convex structure with multiple steps that are adapted between them. With the corresponding gap adjustment, the material forms multiple impacts between the multiple steps, ensuring sufficient crushing of material particles and improving the uniformity of the emulsion.

[0017] Secondly, the outer periphery of the gap is surrounded by an impact ring for impacting the material. By setting the impact ring, the material impacts the impact ring as it rushes out of the gap, which further ensures the fullness of material crushing and improves the uniformity of the emulsion.

[0018] Third, the bends of the multi-step structure are sloping, and the sloping surface at the outlet is parallel to the sloping surface of the valve core. By setting the sloping surface structure, on the one hand, the material can be broken at the sloping surface during the impact process, and on the other hand, the sloping surface makes the material flow more smoothly and improves the emulsification efficiency of the material.

[0019] Fourth, the top of the protruding structure is a spherical structure facing the outlet of the guide channel, which can not only expand the impact surface and increase the impact range on the material, but also improve the smoothness of the impact on the material, so that the material can quickly enter the corresponding gap. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Among them, 1-valve core, 2-valve seat, 3-impact ring, 4-homogeneous cavity, 5-sealing ring, 6-discharge channel, 7-multi-stage steps, 8-spherical structure, and 9-guide channel. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] The purpose of this invention is to provide an adjustable high-pressure homogenizing valve and its high-pressure homogenizer to solve the problems existing in the prior art. By setting a concave-convex structure in combination with a multi-stage stepped structure, the material is subjected to multiple and sufficient impacts between the multi-stage stepped structures to ensure the crushing effect. Furthermore, the drive mechanism can adjust the width of the gap between the valve core and the outlet according to different material properties, so that the material meets the corresponding particle size and distribution requirements, which greatly improves the homogenization production efficiency.

[0025] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] Please refer to Figure 1 This embodiment provides an adjustable high-pressure homogenizing valve, including a valve body with a homogenizing chamber 4, a valve seat 2 fixed in the homogenizing chamber 4, and a valve core 1. Preferably, the valve body, valve seat 2, and valve core 1 are all made of corrosion-resistant alloy material to improve the service life of the entire device. The valve seat 2 has a flow channel 9 connected to the homogenizing pump group. The valve core 1 is movably disposed at the outlet of the flow channel 9, and there is a gap between it and the outlet for shearing materials. The valve core 1 is connected to a drive mechanism that drives it away from or towards the outlet. After the material passes through the flow channel 9 and its outlet, it impacts the valve core 1. When passing through the gap, it causes pressure loss and expansion. The combined effects of explosion, shearing, and high-speed impact break the material particles in the liquid into very small sizes, thereby creating an ideal emulsion or dispersion. Depending on the required degree of emulsification and dispersion of the material, the drive mechanism adjusts the valve core 1 to be closer to or further away from the outlet to achieve the corresponding degree of crushing effect, ensuring the adaptability of the entire device during use. The outlet and valve core 1 have a nested concave-convex structure with matching multi-stage steps 7 between the concave-convex structures. With the corresponding gap adjustment, the material forms multiple impacts between the multi-stage steps 7, ensuring sufficient crushing of the material particles and improving the uniformity of the emulsion.

[0027] The outer periphery of the gap is surrounded by an impact ring 3 for impacting the material. Preferably, the impact ring 3 is also made of a corrosion-resistant alloy material. By setting the impact ring 3, the material impacts the impact ring 3 as it rushes out of the gap, which further ensures the fullness of material crushing and improves the uniformity of the emulsion. The impact ring 3 can be fixed on the inner wall of the homogenization chamber 4 or on the valve seat 2. The axial length of the impact ring 3 is greater than the width of the maximum gap to ensure that the material flowing out of the gap can effectively impact the impact ring 3.

[0028] Furthermore, the corners of the multi-stage steps 7 are sloped, and the slope at the outlet is parallel to the slope of the valve core 1. By setting the sloped structure, on the one hand, the material can be broken at the slope during the impact process, and on the other hand, the sloped setting makes the material flow more smoothly and improves the emulsification efficiency of the material.

[0029] Preferably, the outlet is concave in shape, and the valve core 1 has a convex structure on the side near the outlet that matches the concave structure. Multiple steps 7 are respectively set on the inner wall of the concave structure and the outer wall of the convex structure. After the material flows out of the concave structure, it flows along both sides and toward the valve core 1, constantly impacting between the two multiple steps 7, and then flows out of the gap. This improves the smoothness of the material flow into the gap through the guide channel 9, and avoids the outlet protruding and the valve core 1 concave, which would cause the material to flow back and affect the homogenization efficiency of the material.

[0030] As a preferred embodiment of the present invention, the top of the protruding structure is a spherical structure 8 facing the outlet of the guide channel 9, which can not only expand the impact surface and increase the impact range on the material, but also improve the smoothness of the impact on the material, so that the material can quickly enter the corresponding gap.

[0031] Preferably, to simplify the moving mechanism of the valve core 1, the valve core 1 and the homogenizing cavity 4 are fitted with a cylindrical structure. The outer wall of the valve core 1 is threadedly connected to the inner wall of the homogenizing cavity 4. When the valve core 1 needs to be adjusted, it is rotated within the homogenizing cavity 4, thereby adjusting the gap width between the valve core 1 and the outlet of the guide channel 9. It should be noted that since the valve core 1 is cylindrical, its multi-stage steps 7 are also uniformly annular, and the outlet of the guide channel 9 is adapted to the multi-stage steps 7 on the valve core 1. In this way, during the rotation of the valve core 1, a uniform gap can be formed with the outlet, ensuring the homogenization effect on the material. Preferably, the valve core 1 includes a threaded section and a sealing section. The threaded structure is provided on the threaded section, so that the threaded section is threadedly connected to the homogenizing cavity 4. The surface of the sealing section is smooth, and a sealing ring 5 is fixed inside the homogenizing cavity 4. The smooth structure is slidably inserted into the sealing ring 5.

[0032] To simplify the drive mechanism, the drive mechanism is a handwheel mechanism that is connected to the valve core 1. This allows for manual adjustment according to the required particle size of the material. Preferably, the handwheel mechanism is equipped with corresponding scale markings to clearly indicate the adjustment position.

[0033] Preferably, a planetary gear assembly is provided between the handwheel mechanism and the valve core 1 to increase the transmission ratio, thereby widening the adjustment range of the handwheel mechanism. For example, after turning the handwheel two times, the valve core 1 moves one millimeter to ensure the accuracy of the gap adjustment.

[0034] Furthermore, a high-pressure homogenizer is also provided, including a booster pump set located outside the homogenization chamber 4. The pump set is connected to the inlet of the material tank and the guide channel 9. The pressure of the material entering the homogenization chamber 4 is adjusted by increasing the pump set to adapt to the degree of homogenization of the material. A high-pressure sealing valve gasket is provided between the pump set and the inlet to ensure the sealing of the material flow.

[0035] It also includes a discharge channel 6 connected to the gap, and the discharge channel 6 is connected to a pressure gauge for monitoring the discharge pressure to prevent blockage or gap adjustment failure.

[0036] Any adaptive changes made according to actual needs are within the scope of protection of this invention.

[0037] It should be noted that, for those skilled in the art, it is obvious that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0038] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. An adjustable high-pressure homogenizing valve, characterized in that, The device includes a valve body with a homogenizing chamber, a valve seat and a valve core fixed in the homogenizing chamber. The valve seat has a flow channel connected to the homogenizing pump unit. The valve core is movably disposed at the outlet of the flow channel and has a gap between it and the outlet for shearing materials. The valve core is connected to a drive mechanism that drives it away from or towards the outlet. The outlet and the valve core have a nested concave-convex structure with multiple steps that are adapted to each other. The outlet has a recessed structure, and the valve core has a convex structure on the side near the outlet that matches the recessed structure. The top of the protruding structure is a spherical structure facing the outlet of the flow channel; the top of the protruding structure extends into the outlet of the flow channel and has a gap between it and the inner peripheral wall of the flow channel; the corners of the multi-step structure are inclined structures, and the inclined surface at the outlet is parallel to the inclined surface of the valve core; after the material passes through the flow channel and its outlet, it impacts the valve core, and when it passes through the gap, it causes pressure loss, expansion, explosion, shearing and impact, which breaks the material particles; The outer periphery of the slit is surrounded by an impact ring for impacting the material. The impact ring is fixed to the valve seat. The axial length of the impact ring is greater than the width of the maximum slit, so as to ensure that the material flowing out of the slit can effectively impact the impact ring.

2. The adjustable high-pressure homogenizing valve according to claim 1, characterized in that, The valve core and the homogenizing cavity are in a matching cylindrical structure, and the outer wall of the valve core is threadedly connected to the inner wall of the homogenizing cavity.

3. The adjustable high-pressure homogenizing valve according to claim 2, characterized in that, The driving mechanism is a handwheel mechanism that is connected to the valve core for transmission.

4. The adjustable high-pressure homogenizing valve according to claim 3, characterized in that, A planetary gear assembly for increasing the transmission ratio is provided between the handwheel mechanism and the valve core.

5. A high-pressure homogenizer employing the adjustable high-pressure homogenizing valve as described in any one of claims 1 to 4, characterized in that, It includes a booster pump set located outside the homogenization chamber, the booster pump set being connected to the material tank and the inlet of the flow channel, and a high-pressure sealing valve gasket being provided between the booster pump set and the inlet.

6. The high-pressure homogenizer according to claim 5, characterized in that, It also includes a discharge channel connected to the gap, and the discharge channel is connected to a pressure gauge for monitoring the discharge pressure.

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