A homogenizer device with interchangeable homogenizing valve group and a homogenizer control strategy

Abstract

The present invention discloses a homogenizer device with an interchangeable homogenizing valve group and a homogenizer control strategy, which belongs to the field of homogenizer devices. The homogenizer device includes a pump body assembly, a homogenizing valve mechanism and a crankshaft transmission mechanism. The pump body assembly is provided with a plunger cavity, a feed channel, a first discharge channel and a valve body cavity that are interconnected. The homogenizing valve mechanism is replaceably installed in the valve body cavity. The homogenizing valve mechanism can be a first homogenizing valve mechanism or a second homogenizing valve mechanism. The first homogenizing valve mechanism includes a first homogenizing channel, and the flow gap size of the first homogenizing channel is fixedly set. The second homogenizing valve mechanism includes a second homogenizing channel, and the flow gap size of the second homogenizing channel can be adjusted. The crankshaft transmission mechanism includes a driving source, a crankshaft, a connecting rod and a plunger connected in a transmission manner. The driving source drives the plunger to reciprocate in the plunger cavity through the crankshaft and the connecting rod. The present invention can be applicable to the production of various materials and can reduce the procurement cost of the homogenizer device.

Description

Technical Field

[0001] The present invention relates to the technical field of homogenizer equipment, and in particular to a homogenizer equipment with an interchangeable homogenizing valve group and a homogenizer control strategy. Background Art

[0002] Homogenizers are mainly used in the biological, pharmaceutical, food, chemical and other industries for cell crushing, beverages, fine chemicals, preparation of liposomes, fat emulsions, nanosuspensions, microemulsions, lipid microspheres, emulsions, dairy products, large infusions, dyes and other processing. Under the reciprocating motion of the plunger pump, the homogenizer sucks the fluid material into the high-pressure chamber, and then pressurizes the material and conveys it to the homogenizing valve group with a small gap. When the fluid passes through the small gap, the flow is blocked and high pressure is formed, causing various substances in the fluid to produce strong shear, impact, cavitation blasting, turbulence and other effects, so that the fluid material after passing through the homogenizing valve group is ultra-fine and evenly dispersed. Homogenizers include high-pressure homogenizers and micro-jet homogenizers. High-pressure homogenizers are mostly driven by motors to drive crankshafts and connecting rods, connected to high-pressure plunger pumps for reciprocating motion, and output materials to homogenizing valve groups. The homogenizing valve groups include valve seats, valve cores, impact rings, etc. The high-pressure push rod structure abuts against the valve core, and the flow gap between the valve seat and the valve core is adjusted (adjustable gap type) to allow the fluid material to pass through the adjustable gap to control the homogenization pressure of the material. Micro-jet homogenizers mostly use hydraulic pump stations as power sources to drive hydraulic cylinders, connected to high-pressure plunger pumps for reciprocating motion, so that the fluid material passes through the homogenizing valve core (fixed gap type) with a fixed aperture size and a fixed number of channels, and then adjust the output pressure of the hydraulic pump station, so that the material can be dispersed, emulsified, and form nanoparticles under high-pressure flow.

[0003] The existing high-pressure homogenizer and micro-jet homogenizer are both separate equipment. The existing high-pressure homogenizer has low investment cost, large production capacity, high efficiency, and can reach a flow rate of tens of thousands of liters per hour. Due to the use of an adjustable gap homogenizing valve group, the pressure stability is slightly poor; while the micro-jet homogenizer uses a hydraulic pump to control the pressure, combined with a homogenizing valve core with a fixed number of channels and a flow gap, the consistency effect of the material after homogenization is better than that of the high-pressure homogenizer with an adjustable gap; but the reciprocating speed of the hydraulic cylinder is slow and the output is low, so it is only suitable for application scenarios that require high pressure. At the same time, the cost of the hydraulic pump station and the oil cylinder is high, and pollutants such as oil vapor are generated, which have a certain impact on the environment. Therefore, users need to choose different homogenizing equipment according to different material types, different production environments, different homogenizing pressures, different production capacity requirements, etc., so that users sometimes need to purchase two types of equipment to meet the experimental or production needs of their products, which requires large fixed asset investment, occupies a lot of space, and is not energy-saving. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a homogenizer device with an interchangeable homogenizing valve group and a homogenizer control strategy, wherein a pump body assembly can be compatible with a fixed gap homogenizing valve group and an adjustable gap homogenizing valve group, with strong interchangeability and low cost.

[0005] A homogenizer device with an interchangeable homogenizing valve group according to an embodiment of the present invention comprises:

[0006] A pump body assembly, wherein the pump body assembly is provided with a plunger cavity, a feed channel, a first discharge channel and a valve body cavity which are interconnected, the feed channel is used for feeding, the first discharge channel is used for discharging, and one end of the valve body cavity is open;

[0007] A crankshaft transmission mechanism, comprising a driving source, a crankshaft, a connecting rod and a plunger connected in sequence, one end of the plunger extends into the plunger cavity, the driving source drives the plunger to reciprocate in the plunger cavity through the crankshaft and the connecting rod, the driving source has a constant torque output function and the torque and speed are independently and continuously adjustable, the driving source comprises a first servo motor or a permanent magnet synchronous motor, the plunger cavity, the crankshaft, the connecting rod and the plunger are arranged in a one-to-one correspondence, and at least one plunger cavity is arranged;

[0008] A homogenizing valve mechanism is replaceably installed in the valve body cavity. There are at least two types of homogenizing valve mechanisms, one of which is a first homogenizing valve mechanism, and the other is a second homogenizing valve mechanism. The first homogenizing valve mechanism includes a first homogenizing channel for homogenizing materials, and the flow gap size of the first homogenizing channel is fixed. The second homogenizing valve mechanism includes a second homogenizing channel for homogenizing materials, and the flow gap size of the second homogenizing channel is adjustable.

[0009] A homogenizer device with an interchangeable homogenizing valve group according to an embodiment of the present invention has at least the following beneficial effects:

[0010] One end of the homogenizing valve mechanism is installed in the valve body cavity. The material enters along the feed channel. The driving source drives the plunger to reciprocate in the plunger cavity through the crankshaft and the connecting rod, thereby increasing the pressure in the plunger cavity, so that the material is pushed into the first homogenizing channel or the second homogenizing channel. The material is homogenized through the first homogenizing channel or the second homogenizing channel, and then discharged through the first discharge channel. A pump body assembly can be compatible with a fixed gap homogenizing valve group and an adjustable gap homogenizing valve group. It has strong interchangeability and low cost. It can be applied to the production of a variety of materials and can reduce the procurement cost of homogenizer equipment.

[0011] Conventional homogenizers are generally ordinary motors with simple speed control methods. They can only adjust the speed but not the output torque, and cannot achieve precise control of the homogenization pressure. The driving source of this embodiment refers to a machine with a constant torque output function, and the torque and speed are independently and continuously adjustable. It can not only meet the highest production speed and efficiency, but also accurately control the homogenization pressure by adjusting the output torque of the driving source such as a servo motor. In addition, servo motors are more efficient and more energy-saving and emission-reducing than ordinary motors.

[0012] Whether it is an adjustable gap homogenizing valve (second homogenizing valve mechanism) or a fixed gap homogenizing valve (first homogenizing valve mechanism), the pressure can be adjusted by adjusting the output torque of the driving source. It has the advantages of low cost and high production capacity of the high-pressure homogenizer, and is compatible with the high efficiency and high quality of the fixed channel homogenizing valve of the micro-jet homogenizer, realizing the complementary advantages of the two devices. One device can solve the problems of two devices.

[0013] According to some embodiments of the present invention, the first homogenizing valve mechanism includes a first valve body, a first valve core, and a second valve core. When the first homogenizing valve mechanism is installed in the valve body cavity, one end of the first valve body is detachably connected to the valve body cavity. The first valve body is provided with a receiving cavity communicating with the valve body cavity and a second discharge channel. One end of the second discharge channel is communicated with the receiving cavity, and the other end of the second discharge channel penetrates to the other end of the first valve body or the side wall of the first valve body. When the second discharge channel penetrates to the side wall of the first valve body, the second discharge channel is connected to the first discharge channel.

[0014] The first valve core and the second valve core are installed in the accommodating chamber, the first valve core is provided with a first flow channel and a second flow channel for feeding or discharging, the second valve core is provided with a third flow channel and a fourth flow channel for discharging or feeding, the first homogenizing channel is provided on the second valve core, and the first homogenizing channel connects the first flow channel, the second flow channel, the third flow channel and the fourth flow channel.

[0015] According to some embodiments of the present invention, the first homogenizing channel includes a confluence groove, a first diverter groove, a second diverter groove, a first connecting groove, a second connecting groove, a first microchannel and a second microchannel, the two ends of the confluence groove are respectively connected to the third flow channel and the fourth flow channel, the first microchannel and the second microchannel are respectively connected on the two side walls of the confluence groove, one side wall of the first diverter groove is connected to the end of the first microchannel away from the confluence groove, one side wall of the second diverter groove is connected to the end of the second microchannel away from the confluence groove, the first connecting groove is connected to the side of the first diverter groove away from the first microchannel, the first connecting groove is connected to the first flow channel, the second connecting groove is connected to the side of the second diverter groove away from the second microchannel, and the second connecting groove is connected to the second flow channel.

[0016] According to some embodiments of the present invention, the first valve core and the second valve core are operable to switch to a Y-type collision homogenization state or a Z-type direct collision homogenization state. When the first valve core and the second valve core are in the Y-type collision homogenization state, the first valve core is close to the bottom wall of the valve body cavity relative to the second valve core, the first flow channel and the second flow channel are used for material inflow, the third flow channel and the fourth flow channel are used for material outflow, the first microchannel and the second microchannel are arranged opposite to each other, and the corresponding parts of the first microchannel and the second microchannel connected to the confluence groove form a collision zone;

[0017] When the first valve core and the second valve core are in a Z-type direct collision homogenization state, the second valve core is close to the bottom wall of the valve body cavity relative to the first valve core, the third flow channel and the fourth flow channel are used for material inflow, the first flow channel and the second flow channel are used for material outflow, the other side wall of the first diverter groove is arranged close to the first microchannel, the other side wall of the first diverter groove forms a first collision wall, the other side wall of the second diverter groove is arranged close to the second microchannel, and the other side wall of the second diverter groove forms a second collision wall;

[0018] The width and depth of the first microchannel and the second microchannel are consistent, and the width and depth of the first microchannel range from 0.01 mm to 0.3 mm. The distance from the first microchannel to the first impact wall is consistent with the distance from the second microchannel to the second impact wall, and the distance from the first microchannel to the first impact wall ranges from 0.01 mm to 2 mm. In this case, 0.25 mm is preferred.

[0019] According to some embodiments of the present invention, the first homogenizing valve mechanism also includes an encapsulation shell, which is wrapped and connected to the outside of the first valve core and the second valve core, and the encapsulation shell is installed in the accommodating cavity. The encapsulation shell is provided with a fifth flow channel connecting the first flow channel and the second flow channel, and the encapsulation shell is provided with a sixth flow channel connecting the third flow channel and the fourth flow channel.

[0020] According to some embodiments of the present invention, the second homogenizing valve mechanism includes a second valve body, a third valve core, a push rod, a homogenizing valve seat and a gap reading control component. When the second homogenizing valve mechanism is installed in the valve body cavity, one end of the second valve body is detachably connected to the valve body cavity, and the second valve body is provided with an adjusting channel connected to the valve body cavity. The homogenizing valve seat is installed in the adjusting channel at one end close to the valve body cavity, the third valve core is slidably connected in the adjusting channel, one end of the push rod is slidably connected in the adjusting channel, one end of the push rod is fixedly connected or abutted with the third valve core, and the gap reading control component is connected to the other end of the push rod. The flow gap between the homogenizing valve seat and the third valve core forms the first homogenizing channel, and the gap reading control component is used to realize the reading and control of the flow gap value between the homogenizing valve seat and the third valve core.

[0021] According to some embodiments of the present invention, the gap reading control assembly includes a manual reading control assembly or a rotary reading control assembly or a direct-push reading control assembly;

[0022] The manual reading control assembly includes a screw, a handwheel and a first displacement sensor, the surface of the screw is provided with an external thread, the adjusting channel is provided with an internal thread, the external thread is threadedly connected with the internal thread, the screw is provided with a through hole, the push rod is passed through the through hole, the push rod is provided with an annular groove, the screw is provided with a pin, the pin extends into the annular groove, the handwheel is connected to the end of the screw exposed from the adjusting channel, the handwheel is used to drive the screw to rotate so as to drive the push rod to move, and the first displacement sensor is used to measure and read the displacement of the third valve core relative to the homogenizing valve seat;

[0023] Or, the gap reading control assembly includes a rotary reading control assembly, the rotary reading control assembly includes a pressurizing propulsion assembly and a second servo motor, the pressurizing propulsion assembly is connected to the ejector rod, the second servo motor is connected to the pressurizing propulsion assembly, and the second servo motor is used to drive the ejector rod to move through the pressurizing propulsion assembly;

[0024] Or, the gap reading control component includes a direct-push reading control component, the direct-push reading control component includes a second displacement sensor and a driver, the driver includes one of a pneumatic cylinder, a hydraulic cylinder, an electromagnetic cylinder and an electric cylinder, the output end of the driver is connected to the other end of the push rod, the driver is used to drive the push rod to move, and the second displacement sensor is used to directly or indirectly measure and read the displacement of the third valve core relative to the homogeneous valve seat.

[0025] According to some embodiments of the present invention, the pump body assembly includes a pump casing and a diverter block, the plunger cavity corresponds one-to-one to the feed channel and is connected and fixed on the pump casing, the pump casing and the diverter block are connected by a pipeline, a plurality of valve body cavities are arranged on the diverter block, and a plurality of homogenizing valve mechanisms are correspondingly arranged to meet production requirements of larger flow rates.

[0026] According to some embodiments of the present invention, a one-way valve is provided in the feed channel, and the one-way valve includes a spring, a ball, a one-way valve seat, a locking member and a sealing ring. The locking member is used to lock the one-way valve seat in the feed channel. A valve hole is provided on the one-way valve seat along the thickness direction of the one-way valve seat. The spring pushes the ball to block the valve hole. A sealing ring is sandwiched between the locking member and the one-way valve seat. The one-way valve seat is cylindrical. The one-way valve seat is provided with spherical or conical valve seat grooves on both end faces along the axial direction of the one-way valve seat. The one-way valve seat is provided with a valve hole connecting the two valve seat grooves. The one-way valve seat can be used in a reverse direction. The spring pushes the ball to block any valve seat groove at both ends of the one-way valve seat. Compared with the traditional conical single-sided valve seat, the cylindrical one-way valve seat can be used on both sides, which saves maintenance costs and improves material utilization.

[0027] According to a homogenizer control strategy of an embodiment of the present invention, when the first homogenizer valve mechanism is installed in the valve body cavity, the homogenization pressure is precisely controlled by adjusting the output torque of the driving source. Through the constant torque output function of the driving source, combined with the crankshaft, connecting rod, plunger, and the first homogenizer valve mechanism, the function of replacing the high-cost and high-pollution hydraulic pump station-type micro-jet homogenization equipment with a low-cost crankshaft homogenizer is realized. When the second homogenizer valve mechanism is installed in the valve body cavity, the flow gap size of the second homogenizer channel is first precisely adjusted, and then the homogenization pressure is precisely controlled by adjusting the output torque of the driving source; the problem of the traditional homogenizer that only controls the abstract pressure value but cannot read or precisely control the homogenization gap is changed.

[0028] A homogenizer control strategy according to an embodiment of the present invention has at least the following beneficial effects:

[0029] One end of the homogenizing valve mechanism is installed in the valve body cavity. The material enters along the feed channel. The driving source drives the plunger to reciprocate in the plunger cavity through the crankshaft and the connecting rod, thereby increasing the pressure in the plunger cavity, so that the material is pushed into the first homogenizing channel or the second homogenizing channel. The material is homogenized through the first homogenizing channel or the second homogenizing channel, and then discharged through the first discharge channel. A pump body assembly can be compatible with a fixed gap homogenizing valve group and an adjustable gap homogenizing valve group. It has strong interchangeability and low cost. It can be applied to the production of a variety of materials and can reduce the procurement cost of homogenizer equipment.

[0030] Conventional homogenizers are generally ordinary motors with simple speed control methods. They can only adjust the speed, but cannot output constant torque and adjust the output torque, and cannot achieve precise control of the homogenization pressure. The driving source of this embodiment refers to a motor with a constant torque output function, and the torque and speed are independently and continuously adjustable. It can not only meet the highest production speed and efficiency, but also accurately control the homogenization pressure by adjusting the output torque of the driving source such as a servo motor. Combined with the size of the material particles before homogenization and the required target size, the gap of the homogenization valve group is accurately adjusted, and the homogenization production of various fluid materials can be achieved in a more scientific and intelligent way. The servo motor is more efficient and more energy-saving and emission-reducing than ordinary motors. The driving source includes a servo motor or a permanent magnet synchronous motor with a constant torque output function.

[0031] Whether it is an adjustable gap homogenizing valve (second homogenizing valve mechanism) or a fixed gap homogenizing valve (first homogenizing valve mechanism), the pressure can be adjusted by adjusting the output torque of the driving source. It has the advantages of low cost and high production capacity of the high-pressure homogenizer, and is compatible with the high efficiency and high quality of the fixed channel homogenizing valve of the micro-jet homogenizer, realizing the complementary advantages of the two devices. One device can solve the homogenization function problems of the two devices.

[0032] Additional aspects and advantages of the invention will be set forth in part in the description which follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0034] Figure 1 A schematic diagram of a homogenizer device with a first interchangeable homogenizing valve group according to an embodiment of the present invention;

[0035] Figure 2 for Figure 1 A magnified view of middle;

[0036] Figure 3 A cross-sectional view of a pump housing of a homogenizer device with a first interchangeable homogenizing valve assembly according to an embodiment of the present invention;

[0037] Figure 4A cross-sectional view of a first homogenizing valve mechanism of a homogenizer device with a first interchangeable homogenizing valve group according to an embodiment of the present invention;

[0038] Figure 5 A cross-sectional view of a first valve body of a homogenizer device of a first interchangeable homogenizing valve group according to an embodiment of the present invention;

[0039] Figure 6 A cross-sectional view of another first valve body of a homogenizer device of the first interchangeable homogenizing valve assembly according to an embodiment of the present invention;

[0040] Figure 7 It is a structural schematic diagram of a packaging shell, a first valve core and a second valve core of a homogenizer device of a first interchangeable homogenizing valve group according to an embodiment of the present invention;

[0041] Figure 8 A top view of a first valve core of a homogenizer device of a first interchangeable homogenizing valve assembly according to an embodiment of the present invention;

[0042] Fig. 9 This is a schematic structural diagram of a second valve core of a homogenizer device of a first interchangeable homogenizing valve group according to an embodiment of the present invention;

[0043] Fig.10 A schematic diagram of a homogenizer device with a second interchangeable homogenizing valve group according to an embodiment of the present invention;

[0044] Fig.11 A cross-sectional view of a second homogenizing valve mechanism of a homogenizer device with a second interchangeable homogenizing valve group according to an embodiment of the present invention;

[0045] Fig.12 A cross-sectional view of a second valve body of a homogenizer device of a second interchangeable homogenizing valve assembly according to an embodiment of the present invention;

[0046] Fig.13 A schematic diagram of a second homogenizing valve mechanism of a homogenizer device with a third interchangeable homogenizing valve group according to an embodiment of the present invention;

[0047] Fig.14 A schematic diagram of a second homogenizing valve mechanism of a homogenizer device with a fourth interchangeable homogenizing valve group according to an embodiment of the present invention;

[0048] Fig.15 This is a schematic structural diagram of a second interchangeable homogenizing valve assembly according to an embodiment of the present invention when the third valve core and the push rod are fixedly connected;

[0049] Fig.16 It is a cross-sectional view of a diverter block of a homogenizer device of a first interchangeable homogenizing valve group according to an embodiment of the present invention.

[0050] Figure Number:

[0051] 100, pump body assembly; 110, plunger cavity; 120, feed channel; 130, first discharge channel; 140, valve body cavity; 150, pump housing; 151, diverter block; 160, one-way valve; 161, spring; 162, ball; 163, one-way valve seat; 1631, valve seat groove; 1632, valve hole; 164, locking piece; 165, sealing ring; 170, pressure sensor;

[0052] 200, first homogenizing valve mechanism; 210, first valve body; 211, accommodating chamber; 212, second discharge channel; 220, first valve core; 221, first flow channel; 222, second flow channel; 230, second valve core; 231, third flow channel; 232, fourth flow channel; 233, confluence groove; 2331, collision zone; 234, first diverter groove; 2341, first collision wall; 235, second diverter groove; 2351, second collision wall; 236, first microchannel; 237, second microchannel; 238, first connecting groove; 239, second connecting groove; 240, encapsulation shell; 241, fifth flow channel; 242, sixth flow channel;

[0053] 300, second homogenizing valve mechanism; 310, second valve body; 311, regulating channel; 320, third valve core; 321, push rod; 330, homogenizing valve seat; 340, gap reading control assembly; 341, screw; 342, hand wheel; 343, first displacement sensor; 344, pressurizing propulsion assembly; 345, second servo motor; 346, second displacement sensor; 347, driver;

[0054] 400, crankshaft transmission mechanism; 410, driving source; 420, crankshaft; 430, connecting rod; 440, plunger. DETAILED DESCRIPTION

[0055] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0056] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0057] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] See also Figure 1 , Figure 3 and Fig.10 A homogenizer device with an interchangeable homogenizing valve group according to an embodiment of the present invention comprises a pump assembly 100 and a homogenizing valve mechanism, wherein the pump assembly 100 comprises a pump housing 150, and the homogenizing valve mechanism is detachably connected to the pump housing 150, and the homogenizing valve mechanism is used to homogenize materials. The pump housing 150 is provided with a plunger cavity 110, a feed channel 120, a first discharge channel 130 and a valve body cavity 140 which are interconnected, the plunger cavity 110 penetrates to the bottom wall of the valve body cavity 140, the feed channel 120 penetrates to the side wall of the plunger cavity 110, and the first discharge channel 130 penetrates to the side wall of the valve body cavity 140. The pump assembly 100 is also provided with a pressure sensing cavity, which is connected to the plunger cavity 110, and a pressure sensor 170 is arranged in the pressure sensing cavity. The plunger cavity 110 is used for the plunger 440 to extend into, and the plunger 440 moves in the plunger cavity 110 to pressurize the plunger cavity 110. The feed channel 120 is used for material to enter, the first discharge channel 130 is used for material to discharge, and one end of the valve body cavity 140 is open.

[0059] The homogenizing valve mechanism is replaceably installed in the valve body cavity 140, and the homogenizing valve mechanism is installed in the valve body cavity 140. There are at least two types of homogenizing valve mechanisms, one of which is a first homogenizing valve mechanism 200, and the other is a second homogenizing valve mechanism 300. The first homogenizing valve mechanism 200 includes a first homogenizing channel for homogenizing materials, and the flow gap size of the first homogenizing channel is fixed. The second homogenizing valve mechanism 300 includes a second homogenizing channel for homogenizing materials, and the flow gap size of the second homogenizing channel is adjustable.

[0060] When the first homogenizing valve mechanism 200 is initially installed in the valve body cavity 140 and needs to be replaced with the second homogenizing valve mechanism 300, it is only necessary to remove the first homogenizing valve mechanism 200 from the valve body cavity 140 and then install the second homogenizing valve mechanism 300 in the valve body cavity 140. When the second homogenizing valve mechanism 300 is initially installed in the valve body cavity 140 and needs to be replaced with the first homogenizing valve mechanism 200, it is only necessary to remove the second homogenizing valve mechanism 300 from the valve body cavity 140 and then install the first homogenizing valve mechanism 200 in the valve body cavity 140.

[0061] The crankshaft transmission mechanism 400 includes a driving source 410, a crankshaft 420, a connecting rod 430 and a plunger 440 which are sequentially connected in transmission. One end of the plunger 440 extends into the plunger cavity 110. The driving source 410 drives the plunger 440 to reciprocate in the plunger cavity 110 through the crankshaft 420 and the connecting rod 430. The driving source 410 has a constant torque output function and the torque and speed are independently and continuously adjustable. The driving source 410 includes a first servo motor or a permanent magnet synchronous motor.

[0062] The plunger chamber 110, the crankshaft 420, the connecting rod 430 and the plunger 440 are arranged in a one-to-one correspondence, and at least one plunger chamber 110 is arranged. According to the size of the production capacity, the crankshaft 420, the connecting rod 430, the plunger 440 and the plunger chamber 110 can be arranged in parallel in multiple groups to realize the linkage work of multiple plungers, so that the flow rate and the production capacity are increased in the same proportion.

[0063] One end of the homogenizing valve mechanism is installed in the valve body cavity 140, and the material enters along the feed channel 120. The driving source 410 drives the plunger 440 to reciprocate in the plunger cavity 110 through the crankshaft 420 and the connecting rod 430, thereby increasing the pressure of the plunger cavity 110, so that the material is pushed into the first homogenizing channel or the second homogenizing channel. The material is homogenized through the first homogenizing channel or the second homogenizing channel, and then discharged through the first discharge channel 130. A pump body assembly 100 can be compatible with a fixed gap homogenizing valve group and an adjustable gap homogenizing valve group, with strong interchangeability and low cost. It can be applied to the production of a variety of materials and can reduce the procurement cost of homogenizer equipment.

[0064] Conventional homogenizers are generally ordinary motors with simple speed control methods. They can only adjust the speed but not the output torque, and cannot achieve precise control of the homogenization pressure. The driving source 410 of this embodiment refers to a device with a constant torque output function, and the torque and speed are independently and continuously adjustable. It can not only meet the highest production speed and efficiency, but also accurately control the homogenization pressure by adjusting the output torque of the driving source 410, such as a servo motor. In addition, servo motors are more efficient, energy-saving and emission-reducing than ordinary motors.

[0065] Whether it is an adjustable gap homogenizing valve (the second homogenizing valve mechanism 300) or a fixed gap homogenizing valve (the first homogenizing valve mechanism 200), the pressure can be adjusted by adjusting the output torque of the driving source 410. It has the advantages of low cost and high production capacity of the high-pressure homogenizer, and is compatible with the high efficiency and high quality of the fixed channel homogenizing valve of the microfluidic homogenizer, realizing the complementary advantages of the two devices. One device can solve the problems of two devices.

[0066] In some embodiments, see Figure 1 , Figure 4 and Figure 5 The first homogenizing valve mechanism 200 includes a first valve body 210, a first valve core 220 and a second valve core 230. When the first homogenizing valve mechanism 200 is installed in the valve body cavity 140, one end of the first valve body 210 is detachably connected to the valve body cavity 140. Figure 5 The first valve body 210 is provided with a communicating accommodation cavity 211 and a second discharge channel 212. The accommodation cavity 211 is connected to the valve body cavity 140. Figure 5 and Figure 6 , one end of the second discharge channel 212 is connected to the accommodating chamber 211, and the other end of the second discharge channel 212 penetrates to the other end of the first valve body 210 or the side wall of the first valve body 210. When the other end of the second discharge channel 212 penetrates to the side wall of the first valve body 210, the second discharge channel 212 is connected to the first discharge channel 130. When the other end of the second discharge channel 212 penetrates to the other end of the first valve body 210, the first discharge channel 130 may not be provided.

[0067] The first valve core 220 and the second valve core 230 are installed in the accommodating chamber 211. Figure 8 The first valve core 220 is provided with a first flow channel 221 and a second flow channel 222 for feeding or discharging materials. Fig. 9 A third flow channel 231 and a fourth flow channel 232 for discharging or feeding are arranged on the second valve core 230 at intervals. The first homogenizing channel is arranged on the second valve core 230, and the first homogenizing channel connects the first flow channel 221, the second flow channel 222, the third flow channel 231 and the fourth flow channel 232.

[0068] In some embodiments, see Fig. 9 The first homogenizing channel includes a confluence groove 233, a first diverter groove 234, a second diverter groove 235, a first connecting groove 238, a second connecting groove 239, a first microchannel 236, and a second microchannel 237. The two ends of the confluence groove 233 are respectively connected to the third flow channel 231 and the fourth flow channel 232, the first microchannel 236 and the second microchannel 237 are respectively connected to the two side walls of the confluence groove 233, one side wall of the first diverter groove 234 is connected to the end of the first microchannel 236 away from the confluence groove 233, one side wall of the second diverter groove 235 is connected to the end of the second microchannel 237 away from the confluence groove 233, the first connecting groove 238 is connected to the side of the first diverter groove 234 away from the first microchannel 236, and the first connecting groove 238 is connected to the first flow channel 221. The second connecting groove 239 is connected to the side of the second diverter groove 235 away from the second microchannel 237, and the second connecting groove 239 is connected to the second flow channel 222.

[0069] When the material flows through the first microchannel 236 and the second microchannel 237, the flow gap is reduced, and the speed of the material flow increases sharply, which can reach supersonic speed (such as 500m / s), forming a high-speed microjet, which has a strong shear and impact effect on the material, thereby achieving homogenization of the material.

[0070] The cross-sections of the first connecting groove 238 and the first diverter groove 234 are in an Ω shape, and the cross-sections of the second connecting groove 239 and the second diverter groove 235 are in an Ω shape. The first connecting groove 238 and the second connecting groove 239 are provided to facilitate the first diverter groove 234 and the second diverter groove 235 to be connected to the first flow channel 221 and the second flow channel 222 respectively, while ensuring that the two inner walls of the first diverter groove 234 and the second diverter groove 235 are close to each other; further, it can ensure that the first collision wall is close to the first microchannel 236, and the second collision wall is close to the second microchannel 237, and ensure that when the first valve core 220 and the second valve core 230 are in a Z-type direct collision homogenization state, the first valve core 220 and the second valve core 230 can perform Z-type direct collision homogenization on the material.

[0071] In some embodiments, see Figure 4 , Figure 8 and Fig. 9 The first valve core 220 and the second valve core 230 can be operably switched to a Y-type collision homogenization state or a Z-type direct collision homogenization state (the installation direction is changed according to the different physical properties of the material).

[0072] When the first valve core 220 and the second valve core 230 are in the Y-shaped collision homogenization state, the first valve core 220 is closer to the bottom wall of the valve body cavity 140 relative to the second valve core 230; the first flow channel 221 and the second flow channel 222 are used for material inflow, and the third flow channel 231 and the fourth flow channel 232 are used for material outflow. The first microchannel 236 and the second microchannel 237 are arranged opposite to each other, and the corresponding first microchannel 236 and the second microchannel 237 communicate with the confluence groove 233 to form a collision area 2331. The material liquid flows in from the first flow channel 221 and the second flow channel 222 respectively, and then passes through the first microchannel 236 and the second microchannel 237 for acceleration (the speed of the material liquid flow increases sharply and can reach supersonic speed, forming high-speed microjets, which are subjected to shearing tens of millions of times per second in the first microchannel 236 and the second microchannel 237). Finally, they collide in the collision area 2331 of the confluence groove 233, and experience a bullet-like explosion during the collision, resulting in an instantaneous pressure drop and cavitation effect, producing a strong physical effect.

[0073] When the first valve core 220 and the second valve core 230 are in a Z-type direct collision homogenization state (the first valve core 220 and the second valve core 230 are taken out of the accommodating chamber 211, and the positions of the first valve core 220 and the second valve core 230 are swapped and then installed into the accommodating chamber 211.), the second valve core 230 is close to the bottom wall of the valve body cavity 140 relative to the first valve core 220, the third flow channel 231 and the fourth flow channel 232 are used for material inflow, and the first flow channel 221 and the second flow channel 222 are used for material outflow. The other side wall of the first diverter groove 234 is arranged close to the first microchannel 236, and the other side wall of the first diverter groove 234 forms a first collision wall 2341, and the other side wall of the second diverter groove 235 is arranged close to the second microchannel 237, and the other side wall of the second diverter groove 235 forms a second collision wall 2351.

[0074] The first microchannel 236 and the second microchannel 237 can be provided with one or more. When the first microchannel 236 and the second microchannel 237 are provided with multiple, the multiple first microchannels 236 and the multiple second microchannels 237 are provided in pairs one by one. The width and depth of the multiple first microchannels 236 are consistent, and the width and depth of the multiple second microchannels 237 are consistent. The width and depth of the first microchannel 236 and the second microchannel 237 are consistent, and the width and depth size range of the first microchannel 236 is 0.01mm-0.3mm. The distance from the first microchannel 236 to the first impact wall 2341 is consistent with the distance from the second microchannel 237 to the second impact wall 2351, and the distance from the first microchannel 236 to the first impact wall 2341 ranges from 0.01mm-2mm. 0.25mm is preferred in this case.

[0075] The material liquid flows in from the third flow channel 231 and the fourth flow channel 232 respectively, and then passes through the first microchannel 236 and the second microchannel 237 for acceleration (the speed of the material liquid flow increases sharply and can reach supersonic speed, forming high-speed microjets. These microjets undergo shearing tens of millions of times per second in the first microchannel 236 and the second microchannel 237), and then impacts the first impact wall 2341 and the second impact wall 2351 respectively, generating an instantaneous pressure drop and cavitation effect, generating an instantaneous pressure drop and cavitation effect, and generating a strong physical effect.

[0076] In some embodiments, see Figure 7 , the first homogenizing valve mechanism 200 further includes a packaging shell 240, which is wrapped and connected to the outside of the first valve core 220 and the second valve core 230, and the packaging shell 240 is installed in the accommodating chamber 211. The packaging shell 240 is provided with a fifth flow channel 241 connecting the first flow channel 221 and the second flow channel 222, and the packaging shell 240 is provided with a sixth flow channel 242 connecting the third flow channel 231 and the fourth flow channel 232. When the first valve core 220 and the second valve core 230 are in a Y-shaped collision homogenization state, the fifth flow channel 241 faces the outside of the first homogenizing valve mechanism 200, and the material flows in from the fifth flow channel 241, and flows out from the sixth flow channel 242 after being homogenized by the first valve core 220 and the second valve core 230. When the first valve core 220 and the second valve core 230 are in the Z-type direct collision homogenization state, the sixth flow channel 242 faces the outside of the first homogenizing valve mechanism 200, and the material flows in from the sixth flow channel 242, and flows out from the fifth flow channel 241 after being homogenized by the first valve core 220 and the second valve core 230.

[0077] The first valve core 220 and the second valve core 230 are encapsulated in a packaging shell 240 (a metal cavity connected end to end) to form an independent homogenizing valve core assembly with a fixed channel gap. The entire homogenizing valve core assembly is then installed in the accommodating cavity 211 to facilitate the switching of the first valve core 220 and the second valve core 230 between a Y-type collision homogenizing state or a Z-type direct collision homogenizing state.

[0078] In some embodiments, see Fig.10 , Fig.11 and Fig.12When the second homogenizing valve mechanism 300 is installed in the valve body cavity 140, the second homogenizing valve mechanism 300 includes a second valve body 310, a third valve core 320, a push rod 321, a homogenizing valve seat 330 and a gap reading control assembly 340. One end of the second valve body 310 is detachably connected to the valve body cavity 140, and the second valve body 310 is provided with an adjusting channel 311 connected to the valve body cavity 140. The homogenizing valve seat 330 is installed in the adjusting channel 311 near one end of the valve body cavity 140, and the third valve core 320 is slidably connected in the adjusting channel 311. One end of the push rod 321 is slidably connected in the adjusting channel 311, and a sealing ring is sleeved on the push rod 321, and the outer ring of the sealing ring abuts against the adjusting channel 311. See Fig.14 and Fig.15 One end of the push rod 321 is fixedly connected or abutted with the third valve core 320 (the push rod 321 can be separately provided with the third valve core 320, or can be integrally provided), and the gap reading control component 340 is connected to the other end of the push rod 321. The flow gap between the homogenizing valve seat 330 and the third valve core 320 forms a first homogenizing channel, and the gap reading control component 340 is used to realize the reading and control of the flow gap value between the homogenizing valve seat 330 and the third valve core 320.

[0079] A valve seat hole is provided on the homogenizing valve seat 330 , and the valve seat hole is connected to the valve body cavity 140 . The third valve core 320 abuts against one end of the valve seat hole. When the equipment is working, the material is pushed into the valve seat hole and then flows out along the gap between the homogenizing valve seat 330 and the third valve core 320 .

[0080] The material liquid flows along the bottom wall of the valve body cavity 140 to the first homogenization channel for homogenization. The gap reading control component 340 can adjust the gap size between the homogenization valve seat 330 and the third valve core 320, and then adjust the gap size of the first homogenization channel and the size of the homogenization pressure. The control range of the flow gap value is 0.001mm-5mm.

[0081] In some embodiments, see Fig.10 and Fig.11, the gap reading control component 340 can be a manual reading control component, which includes a screw 341, a hand wheel 342 and a first displacement sensor 343. The first displacement sensor 343 has a displacement data conversion function. The first displacement sensor 343 can be a contact or non-contact sensor. The non-contact detection method includes photoelectric detection, electromagnetic detection, resistance, capacitance detection, etc. The first displacement sensor 343 includes one of a photoelectric sensor, an inductive sensor, an electromagnetic induction sensor and a resistive sensor. The surface of the screw 341 is provided with an external thread, and the adjusting channel 311 is provided with an internal thread. The external thread and the internal thread are threadedly connected. A through hole is provided on the screw 341, and the push rod 321 is penetrated by the through hole. The push rod 321 is provided with an annular groove. The screw 341 is provided with a pin, and the pin extends into the annular groove. The handwheel 342 is connected to one end of the screw 341 that is exposed from the adjustment channel 311. The handwheel 342 is used to drive the screw 341 to rotate to drive the push rod 321 to move. The first displacement sensor 343 measures and reads the displacement of the push rod 321 relative to the homogenizing valve seat 330, and then measures and reads the displacement of the third valve core 320 relative to the homogenizing valve seat 330.

[0082] The first displacement sensor 343 may be installed in a contact manner or in a non-contact manner.

[0083] The hand wheel 342 is turned to drive the screw rod 341 to rotate, so that the screw rod 341 moves forward and backward in the adjustment channel 311. The pin on the screw rod 341 rotates in the annular groove, and the pin pushes the side wall of the annular groove, thereby driving the push rod 321 to move forward and backward in the adjustment channel 311 to adjust the gap between the homogenizing valve seat 330 and the third valve core 320. The first displacement sensor 343 can directly or indirectly measure and read the displacement of the push rod 321. At the initial position, the push rod 321 pushes the third valve core 320 against the homogenizing valve seat 330, and the initial flow gap between the third valve core 320 and the homogenizing valve seat 330 is 0, so that the displacement of the push rod 321 relative to the homogenizing valve seat 330 is equal to the initial flow gap between the third valve core 320 and the homogenizing valve seat 330.

[0084] In some embodiments, see Fig.10 and Fig.13 The gap reading control component 340 can also be a rotary reading control component, which includes a pressurizing and pushing component 344 and a second servo motor 345. The pressurizing and pushing component 344 is connected to the ejector rod 321, and the second servo motor 345 is connected to the pressurizing and pushing component 344. The second servo motor 345 is used to drive the ejector rod 321 to move through the pressurizing and pushing component 344. By reading the rotational movement of the encoder of the second servo motor 345, the displacement of the ejector rod 321 can be controlled.

[0085] The pressurized propulsion assembly 344 may include a screw module, and the second servo motor 345 may achieve precise control (by reading the rotary encoder data of the servo motor controller) to control the specific forward or backward dimensions of the screw module, thereby achieving precise adjustment of the forward and backward movement of the push rod 321, and achieving precise controllable clearance between the homogenizing valve seat 330 and the third valve core 320.

[0086] In the initial position, the push rod 321 pushes the third valve core 320 against the homogenizing valve seat 330, and the initial flow gap between the third valve core 320 and the homogenizing valve seat 330 is 0, so that the displacement of the push rod 321 relative to the homogenizing valve seat 330 is equal to the initial flow gap between the third valve core 320 and the homogenizing valve seat 330.

[0087] A displacement sensor may also be provided in the rotary reading control assembly, and the displacement of the reading push rod 321 relative to the homogenizing valve seat 330 is measured by the displacement sensor.

[0088] In some embodiments, see Fig.10 and Fig.14 , the gap reading control component 340 can also be a direct push reading control component, which includes a second displacement sensor 346 and a driver 347. The second displacement sensor 346 has a displacement data conversion function. The second displacement sensor 346 can be a contact or non-contact sensor. The non-contact detection method includes photoelectric detection, electromagnetic detection, resistance, capacitance detection, etc. The second displacement sensor 346 includes one of a photoelectric sensor, an inductive sensor, an electromagnetic induction sensor, and a resistive sensor. The driving method of the driver 347 includes air pressure drive, hydraulic drive, electromagnetic drive, and motor drive cylinder, etc. The driver 347 can be one of a pneumatic cylinder, a hydraulic cylinder, an electromagnetic cylinder, and an electric cylinder. The output end of the driver 347 is connected to the other end of the push rod 321. The driver 347 is used to drive the push rod 321 to move. The second displacement sensor 346 measures and reads the displacement of the push rod 321 relative to the homogenizing valve seat 330, and then measures and reads the displacement of the third valve core 320 relative to the homogenizing valve seat 330.

[0089] The second displacement sensor 346 may be installed in a contact manner or in a non-contact manner.

[0090] The driver 347 drives the push rod 321 to move along the axial direction of the push rod 321 , and the second displacement sensor 346 accurately feeds back the displacement of the push rod 321 relative to the homogenizing valve seat 330 .

[0091] In the initial position, the push rod 321 pushes the third valve core 320 against the homogenizing valve seat 330, and the initial flow gap between the third valve core 320 and the homogenizing valve seat 330 is 0, so that the displacement of the push rod 321 relative to the homogenizing valve seat 330 is equal to the initial flow gap between the third valve core 320 and the homogenizing valve seat 330.

[0092] Combined with the initial particle size of the material before homogenization (generally <0.5mm) and the target particle size to be achieved after homogenization (generally <0.05mm), conventional homogenizers read the homogenization pressure value by adjusting the unknown gap to achieve an unscientific fuzzy homogenization process. In fact, the size of the homogenization pressure value is related to many factors, such as: the particle size of the material, the viscosity of the material, the temperature of the material, the diameter of the pipeline, the diameter of the outlet of the homogenization valve, the thickness of the homogenization valve edge, the flow rate and flow velocity of the material, etc. The present invention accurately controls the gap and then combines it with accurate motor pressure control to achieve dual control of pressure value and gap value. Compared with the conventional pure pressure control homogenization method, it can realize intelligent and digital production operation more accurately and efficiently. The homogenization valve gap (the gap between the homogenization valve seat 330 and the third valve core 320) is generally controlled in the range of 0.001mm to 5mm.

[0093] In some embodiments, see Figure 1 and Fig.16 The pump body assembly 100 includes a pump housing 150 and a diverter block 151. The plunger cavity 110 corresponds to the feed channel 120 one by one and is connected and fixed on the pump housing 150. The pump housing 150 and the diverter block 151 are connected by a pipeline. A plurality of valve body cavities 140 are provided on the diverter block 151, and a plurality of homogenizing valve mechanisms are correspondingly provided. The symmetrical design of the plurality of valve body cavities 140 ensures that the flow velocity and flow rate of each channel are consistent. By providing the diverter block 151 and installing a plurality of homogenizing valve mechanisms on the diverter block 151, the homogenization efficiency of the material can be improved, and the production demand for a larger flow rate can be met.

[0094] In some embodiments, see Figure 1 and Figure 2 A one-way valve 160 is provided in the feed channel 120, and the one-way valve 160 includes a spring 161, a ball 162, a one-way valve seat 163, a locking member 164 and a sealing ring 165. The locking member 164 is used to lock the one-way valve seat 163 in the feed channel 120, and a sealing ring 165 is sandwiched between the locking member 164 and the one-way valve seat 163. The sealing ring 165 can not only ensure the seal between the locking member 164 and the one-way valve seat 163, but also clamp the one-way valve seat 163 on the locking member 164. During the installation process, the one-way valve seat 163 is first inserted into the bottom hole of the locking member 164, and then the locking member 164 is fixed in the feed channel 120. The sealing ring 165 can ensure that the one-way valve seat 163 does not fall during the installation process.

[0095] The one-way valve seat 163 is cylindrical, and both end faces of the one-way valve seat 163 are provided with valve seat grooves 1631 with spherical or conical surfaces. A valve hole 1632 connecting the two valve seat grooves 1631 is provided in the one-way valve seat 163. The one-way valve seat 163 can be used in reverse direction, and the spring 161 pushes the ball 162 to block any valve seat groove 1631 at both ends of the one-way valve seat 163.

[0096] The one-way valve seat 163 is symmetrically arranged so that the one-way valve seat 163 can be used upside down. When the lower end of the one-way valve seat 163 is worn and affects normal use, the one-way valve seat 163 can be used upside down to increase the service life of the one-way valve seat 163. Compared with the traditional conical single-sided valve seat, the cylindrical one-way valve seat can be used on both sides, which saves maintenance costs and improves material utilization.

[0097] According to a homogenizer control strategy of an embodiment of the present invention, when the first homogenizing valve mechanism 200 is installed in the valve body cavity 140, the first homogenizing valve mechanism 200 includes a first homogenizing channel for homogenizing materials, and the flow gap size of the first homogenizing channel is fixedly set. By adjusting the output torque or speed of the driving source 410, combined with the flow gap of the fixedly set first homogenizing channel, the particle size of the material, the particle size of the material, and the viscosity of the fluid, the homogenizing pressure can be accurately controlled. By adjusting the output torque of the driving source 410, the output torque of the crankshaft 420 can be directly adjusted, and then the magnitude of the force applied by the plunger 440 to the material in the plunger cavity 110 can be adjusted, so as to accurately control the homogenizing pressure of the material in the first homogenizing valve mechanism 200. Through the constant torque output function of the driving source 410, combined with the crankshaft 420, the connecting rod 430, the plunger 440, and the first homogenizing valve mechanism 200, the function of replacing the high-cost and high-pollution hydraulic pump station-type micro-jet homogenizing equipment with a low-cost crankshaft homogenizer is realized.

[0098] Conventional homogenizers are generally ordinary motors with simple speed control methods. They can only adjust the speed, but cannot maintain constant output torque and adjust the output torque. They cannot achieve precise control of the homogenization pressure (the determining factor is not only the speed of the motor, but also the particle size of the material, the granularity, the viscosity of the fluid, and the homogenization flow gap of the valve body). The driving source 410 of this embodiment refers to a device with a constant torque output function, and the torque and speed are independently and continuously adjustable. It can not only meet the highest production speed and efficiency, but also accurately control the homogenization pressure by adjusting the output torque of the driving source 410, such as a servo motor. In addition, the servo motor is more efficient and energy-saving and emission-reducing than ordinary motors.

[0099] The speed and torque of the driving source 410 are independently and continuously adjustable, and the speed of the driving source 410 determines the production capacity of the equipment. When the equipment is in full-load production, the speed of the driving source 410 reaches the fastest, and the torque of the driving source 410 is independently and continuously adjustable. Under the premise that the speed of the driving source 410 is at the maximum, the output torque of the driving source 410 is adjusted to minimize energy consumption and control the homogenization pressure, which can not only ensure production efficiency and quality, but also save energy and cost.

[0100] When the second homogenizing valve mechanism 300 is installed in the valve body cavity 140, the flow gap size of the second homogenizing channel is first accurately adjusted, and then the homogenizing pressure is accurately controlled by adjusting the output torque or speed of the driving source 410 in combination with the particle size, particle size, and viscosity of the fluid; by adjusting the output torque of the driving source 410, the output torque of the crankshaft 420 can be directly adjusted, and then the force applied by the plunger 440 to the material in the plunger cavity 110 can be adjusted, so as to accurately control the homogenizing pressure of the material in the second homogenizing valve mechanism 300. This changes the problem of traditional homogenizers that only control abstract pressure values ​​but cannot read or accurately control the homogenizing gap.

[0101] The precise adjustment of the flow gap size of the second homogenizing channel is mainly determined by related parameters, which include:

[0102] 1. Material particle size, viscosity, solid content and temperature.

[0103] 2. The speed, output torque or power of the driving source 410.

[0104] 3. The diameter of the flow hole of the homogenizing valve seat 330, the taper of the flow hole, the flow rate of the material, and the lip width of the gap control position between the homogenizing valve seat 330 and the third valve core 320.

[0105] The gap reading control component 340 can combine the initial particle size of the material before homogenization, the output torque of the driving source 410, the material viscosity, the fluid temperature, the outlet end aperture of the homogenizing valve seat 330, and the target particle size to be achieved after homogenization, and accurately control the gap size between the homogenizing valve seat 330 and the third valve core 320 within the range of 0.001mm to 2mm.

[0106] Combined with the viscosity of the material, the initial particle size of the material before homogenization (generally <0.5mm), and the target particle size to be achieved after homogenization (generally <0.05mm), conventional homogenizers read the homogenization pressure value by adjusting the unknown gap to achieve an unscientific fuzzy homogenization process. In fact, the size of the homogenization pressure value is related to many factors, such as: the particle size of the material, the viscosity of the material, the temperature of the material, the diameter of the pipeline, the diameter of the outlet of the homogenization valve, the thickness of the homogenization valve edge, the flow rate and flow rate of the material, etc. The present invention accurately calculates the gap and then combines it with accurate motor pressure control to achieve dual control of pressure value and gap value. Accurately calculating the gap and then combining it with accurate motor pressure control can achieve intelligent and digital production operations more accurately and efficiently than the conventional pure pressure control homogenization method. The homogenization valve gap (the gap between the homogenization valve seat 330 and the third valve core 320) is generally controlled in the range of 0.001mm to 5mm.

[0107] One end of the homogenizing valve mechanism is installed in the valve body cavity 140, and the material enters along the feed channel 120. The driving source 410 drives the plunger 440 to reciprocate in the plunger cavity 110 through the crankshaft 420 and the connecting rod 430, thereby increasing the pressure of the plunger cavity 110, so that the material is pushed into the first homogenizing channel or the second homogenizing channel. The material is homogenized through the first homogenizing channel or the second homogenizing channel, and then discharged through the first discharge channel 130. A pump body assembly 100 can be compatible with a fixed gap homogenizing valve group and an adjustable gap homogenizing valve group, with strong interchangeability and low cost. It can be applied to the production of a variety of materials and can reduce the procurement cost of homogenizer equipment.

[0108] Conventional homogenizers are generally ordinary motors with simple speed control methods. They can only adjust the speed, but cannot output constant torque and adjust the output torque. They cannot achieve precise control of homogenization pressure (the determining factor is not only the speed of the motor, but also the particle size of the material, the particle size of the material, the viscosity of the fluid, and the homogenization flow clearance of the valve body). The driving source 410 of this embodiment refers to a device with a constant torque output function, and the torque and speed are independently and continuously adjustable. It can not only meet the highest production speed and efficiency, but also accurately control the homogenization pressure by adjusting the output torque of the driving source 410, such as a servo motor. The servo motor is more efficient and more energy-saving and emission-reducing than ordinary motors. Combined with the size of the material particles before homogenization and the required target size, the gap of the homogenization valve group can be accurately adjusted to achieve more scientific and intelligent homogenization production of various fluid materials.

[0109] The speed and torque of the driving source 410 are independently and continuously adjustable, and the speed of the driving source 410 determines the production capacity of the equipment. When the equipment is in full-load production, the speed of the driving source 410 reaches the fastest, and the torque of the driving source 410 is independently and continuously adjustable. Under the premise that the speed of the driving source 410 is at the maximum, the output torque of the driving source 410 is adjusted to minimize energy consumption and control the homogenization pressure, which can not only ensure production efficiency and quality, but also save energy and cost.

[0110] Whether it is an adjustable gap homogenizing valve (the second homogenizing valve mechanism 300) or a fixed gap homogenizing valve (the first homogenizing valve mechanism 200), the pressure can be adjusted by adjusting the output torque of the driving source 410. It has the advantages of low cost and high production capacity of the high-pressure homogenizer, and is compatible with the high efficiency and high quality of the fixed channel homogenizing valve of the microfluidic homogenizer, realizing the complementary advantages of the two devices. One device can solve the homogenization function problems of the two devices.

[0111] The constant pressure output of the fixed gap homogeneous valve group is controlled by the constant torque output of the servo motor or permanent magnet synchronous motor.

[0112] There are many ways to adjust the torque of the servo motor, which can be achieved mainly in the following ways:

[0113] 1. Parameter adjustment.

[0114] Internal torque limit value setting: Servo motors can usually set internal torque limit values ​​in their control systems. This value is usually expressed as a percentage of the rated torque and is used to limit the maximum output torque of the motor. By adjusting this parameter, the torque output range of the motor can be directly controlled.

[0115] Use professional software or debugger: Servo motor parameter adjustment often requires the use of professional software or debugger. These tools allow users to accurately set various motor parameters, including torque limit values. Through the software interface, users can easily modify parameters and observe the motor's response in real time.

[0116] 2. Switch the operation mode.

[0117] Servo motors have multiple operating modes, including speed mode, position mode, and torque mode. By switching between different operating modes, the working mode inside the motor can be changed, thereby achieving torque adjustment.

[0118] Torque mode: In torque mode, the user can set a fixed torque value, and the motor will output a torque corresponding to the value. When the load is less than the set torque, the motor will rotate at the maximum speed; when the load reaches or exceeds the set torque, the motor will slow down or stop rotating. This mode is suitable for application scenarios with strict torque requirements.

[0119] Speed ​​mode and position mode: Although speed mode and position mode do not directly use torque as the output target, the torque output can be indirectly affected by adjusting the speed and position parameters of the motor. For example, in speed mode, reducing the motor speed can reduce the torque output; in position mode, the torque can also be adjusted by accurately controlling the rotation angle and speed of the motor.

[0120] 3. External control.

[0121] In addition to adjusting the torque by adjusting internal parameters and switching the operation mode, the servo motor torque can also be adjusted by external control signals.

[0122] Analog control: Some servo motors support torque control through external analog signals (such as voltage or current signals). Users can adjust the size of the analog signal as needed to change the torque output of the motor. This control method is usually used in application scenarios that require real-time torque adjustment.

[0123] Communication control: Modern servo motors usually have a communication interface, allowing users to send control instructions through a communication protocol. By sending a control instruction containing a torque setpoint to the servo drive, the motor torque can be remotely adjusted. This control method is flexible and scalable, and is suitable for application scenarios that require complex control and remote monitoring.

[0124] There are mainly the following methods for adjusting torque of permanent magnet synchronous motor:

[0125] 1. Current control.

[0126] Principle: The torque of the motor can be changed by adjusting the current of the motor. Increasing the current of the motor can increase the torque, while reducing the current of the motor can reduce the torque.

[0127] Implementation: This method can be achieved by adjusting the output current of the motor controller. The controller adjusts the current output to the motor according to the set torque target value, thereby achieving precise control of the torque.

[0128] 2. Magnetic flux regulation.

[0129] Principle: The torque of the motor is adjusted by changing the magnetic flux in the permanent magnet. Increasing the magnetic flux increases the torque, while decreasing the magnetic flux decreases the torque.

[0130] Implementation: This method can be achieved by changing the flux regulation parameters in the motor controller. However, it should be noted that the permanent magnet flux of a permanent magnet synchronous motor is usually constant, so in practical applications, flux regulation may be more indirectly achieved by controlling other parameters of the motor (such as current).

[0131] 3. Control strategy.

[0132] Vector control: Vector control is a high-precision motor control strategy that achieves precise control of the motor by decoupling the motor's rotor space vector and decomposing it into direct-axis (d-axis) and quadrature-axis (q-axis) components. In a permanent magnet synchronous motor, the torque can be adjusted by controlling the current components of the d-axis and q-axis. For example, under id=0 control, the direct-axis current is zero, and the electromagnetic torque is only controlled by the quadrature-axis current. This method is simple in structure and easy to implement.

[0133] Direct Torque Control (DTC): Direct torque control is a direct torque control technology based on the motor state space model. It directly calculates the motor torque by measuring the motor flux and armature current, and uses a hysteresis comparator to achieve direct control of the torque. The DTC control method has the characteristics of fast response speed and high control accuracy, and is suitable for fields with high requirements for precision control of permanent magnet synchronous motors.

[0134] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0135] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A homogenizer device with an interchangeable homogenizing valve group, characterized in that: include: A pump body assembly, wherein the pump body assembly is provided with a plunger cavity, a material inlet channel, a first material outlet channel and a valve body cavity which are interconnected, and one end of the valve body cavity is open; A crankshaft transmission mechanism, comprising a driving source, a crankshaft, a connecting rod and a plunger connected in sequence, one end of the plunger extends into the plunger cavity, the driving source drives the plunger to reciprocate in the plunger cavity through the crankshaft and the connecting rod, the driving source has a constant torque output function and the torque and speed are independently and continuously adjustable, the driving source comprises a first servo motor or a permanent magnet synchronous motor, the plunger cavity, the crankshaft, the connecting rod and the plunger are arranged in a one-to-one correspondence, and at least one plunger cavity is arranged; A homogenizing valve mechanism is replaceably installed in the valve body cavity. There are at least two types of homogenizing valve mechanisms, one of which is a first homogenizing valve mechanism, and the other is a second homogenizing valve mechanism. The first homogenizing valve mechanism includes a first homogenizing channel for homogenizing materials, and the flow gap size of the first homogenizing channel is fixed. The second homogenizing valve mechanism includes a second homogenizing channel for homogenizing materials, and the flow gap size of the second homogenizing channel is adjustable.

2. A homogenizer device with an interchangeable homogenizing valve group according to claim 1, characterized in that: The first homogenizing valve mechanism comprises a first valve body, a first valve core and a second valve core. When the first homogenizing valve mechanism is installed in the valve body cavity, one end of the first valve body is detachably connected to the valve body cavity. The first valve body is provided with a receiving cavity communicating with the valve body cavity and a second discharge channel. One end of the second discharge channel is communicated with the receiving cavity, and the other end of the second discharge channel penetrates to the other end of the first valve body or the side wall of the first valve body. When the second discharge channel penetrates to the side wall of the first valve body, the second discharge channel is connected with the first discharge channel. The first valve core and the second valve core are installed in the accommodating cavity, the first valve core is provided with a first flow channel and a second flow channel at intervals, the second valve core is provided with a third flow channel and a fourth flow channel at intervals, the first homogenizing channel is provided on the second valve core, and the first homogenizing channel connects the first flow channel, the second flow channel, the third flow channel and the fourth flow channel.

3. A homogenizer device with an interchangeable homogenizing valve group according to claim 2, characterized in that: The first homogenizing channel includes a confluence groove, a first diverter groove, a second diverter groove, a first connecting groove, a second connecting groove, a first microchannel and a second microchannel. The two ends of the confluence groove are respectively connected to the third flow channel and the fourth flow channel, the first microchannel and the second microchannel are respectively connected on the two side walls of the confluence groove, one side wall of the first diverter groove is connected to the end of the first microchannel away from the confluence groove, one side wall of the second diverter groove is connected to the end of the second microchannel away from the confluence groove, the first connecting groove is connected to the side of the first diverter groove away from the first microchannel, the first connecting groove is connected to the first flow channel, the second connecting groove is connected to the side of the second diverter groove away from the second microchannel, and the second connecting groove is connected to the second flow channel.

4. A homogenizer device with an interchangeable homogenizing valve group according to claim 3, characterized in that: The first valve core and the second valve core are operable to switch to a Y-type collision homogenization state or a Z-type direct collision homogenization state. When the first valve core and the second valve core are in the Y-type collision homogenization state, the first flow channel and the second flow channel are used for material inflow, the third flow channel and the fourth flow channel are used for material outflow, the first microchannel and the second microchannel are arranged opposite to each other, and the corresponding first microchannel and the second microchannel are connected to the confluence groove to form a collision zone; When the first valve core and the second valve core are in a Z-type direct collision homogenization state, the third flow channel and the fourth flow channel are used for material inflow, the first flow channel and the second flow channel are used for material outflow, the other side wall of the first diverter groove is arranged close to the first microchannel, the other side wall of the first diverter groove forms a first collision wall, the other side wall of the second diverter groove is arranged close to the second microchannel, and the other side wall of the second diverter groove forms a second collision wall; The width and depth of the first microchannel and the second microchannel are consistent, and the width and depth of the first microchannel range from 0.01mm to 0.3mm. The distance from the first microchannel to the first impact wall is consistent with the distance from the second microchannel to the second impact wall, and the distance from the first microchannel to the first impact wall ranges from 0.01mm to 2mm.

5. The homogenizer device with interchangeable homogenizing valve group according to claim 2, characterized in that: The first homogenizing valve mechanism also includes an encapsulation shell, which is wrapped and connected to the outside of the first valve core and the second valve core, and the encapsulation shell is installed in the accommodating cavity. The encapsulation shell is provided with a fifth flow channel connecting the first flow channel and the second flow channel, and the encapsulation shell is provided with a sixth flow channel connecting the third flow channel and the fourth flow channel.

6. The homogenizer device with interchangeable homogenizing valve group according to claim 1, characterized in that: The second homogenizing valve mechanism includes a second valve body, a third valve core, a push rod, a homogenizing valve seat and a gap reading control component. When the second homogenizing valve mechanism is installed in the valve body cavity, one end of the second valve body is detachably connected to the valve body cavity, and the second valve body is provided with an adjusting channel connected to the valve body cavity. The homogenizing valve seat is installed in the adjusting channel at one end close to the valve body cavity, the third valve core is slidably connected in the adjusting channel, one end of the push rod is slidably connected in the adjusting channel, one end of the push rod is fixedly connected or abutted with the third valve core, and the gap reading control component is connected to the other end of the push rod. The flow gap between the homogenizing valve seat and the third valve core forms the first homogenizing channel, and the gap reading control component is used to realize the reading and control of the flow gap value between the homogenizing valve seat and the third valve core.

7. A homogenizer device with an interchangeable homogenizing valve group according to claim 6, characterized in that: The gap reading control assembly includes a manual reading control assembly, which includes a screw, a handwheel and a first displacement sensor, the surface of the screw is provided with an external thread, the adjusting channel is provided with an internal thread, the external thread is threadedly connected with the internal thread, a through hole is provided on the screw, the push rod is passed through the through hole, an annular groove is provided on the push rod, a pin is provided on the screw, and the pin extends into the annular groove, the handwheel is connected to the end of the screw exposed from the adjusting channel, the handwheel is used to drive the screw to rotate so as to drive the push rod to move, and the first displacement sensor is used to measure and read the displacement of the third valve core relative to the homogenizing valve seat; Or, the gap reading control assembly includes a rotary reading control assembly, the rotary reading control assembly includes a pressurizing propulsion assembly and a second servo motor, the pressurizing propulsion assembly is connected to the ejector rod, the second servo motor is connected to the pressurizing propulsion assembly, and the second servo motor is used to drive the ejector rod to move through the pressurizing propulsion assembly; Alternatively, the gap reading control component includes a direct-push reading control component, which includes a second displacement sensor and a driver, wherein the output end of the driver is connected to the other end of the push rod, the driver is used to drive the push rod to move, and the second displacement sensor is used to measure and read the displacement of the third valve core relative to the homogeneous valve seat.

8. The homogenizer device with interchangeable homogenizing valve group according to claim 1, characterized in that: The pump body assembly includes a pump casing and a diverter block. The plunger cavity corresponds to the feed channel one by one and is connected and fixed on the pump casing. The pump casing and the diverter block are connected by a pipeline. A plurality of valve body cavities are arranged on the diverter block, and a plurality of homogenizing valve mechanisms are correspondingly arranged.

9. The homogenizer device with interchangeable homogenizing valve group according to claim 1, characterized in that: A one-way valve is arranged in the feed channel, and the one-way valve comprises a spring, a ball, a one-way valve seat, a locking piece and a sealing ring. The locking piece is used to lock the one-way valve seat in the feed channel, and a sealing ring is clamped between the locking piece and the one-way valve seat. The one-way valve seat is cylindrical, and valve seat grooves with spherical or conical surfaces are arranged on both end surfaces of the one-way valve seat along the axial direction of the one-way valve seat. A valve hole connecting the two valve seat grooves is arranged in the one-way valve seat, and the one-way valve seat can be used in reverse direction. The spring pushes the ball to seal any valve seat groove at both ends of the one-way valve seat.

10. A homogenizer control strategy applied to a homogenizer device with an interchangeable homogenizing valve group as claimed in claim 1, characterized in that: When the first homogenizing valve mechanism is installed in the valve body cavity, the homogenizing pressure is controlled by adjusting the output torque of the driving source; when the second homogenizing valve mechanism is installed in the valve body cavity, the flow gap size of the second homogenizing channel is first adjusted, and then the homogenizing pressure is controlled by adjusting the output torque of the driving source.

Images